ОПОРА РОТОРА ТУРБОКОМПРЕССОРА

Опора предназначена для ротора турбокомпрессора турбореактивных и промышленных двигателей. Опора ротора турбокомпрессора включает ротор, подшипник качения, внутренняя обойма которого размещена на валу ротора, статор и установленное в статоре опорное кольцо с наружной обоймой подшипника и телами качения внутри. Статор и опорное кольцо содержат торцевые фланцы, расположенные по одну из сторон от подшипника, в которых равномерно по окружности размещен ряд радиально направленных стержней, жестко скрепленных со статором и соединенных с возможностью скольжения с торцевым фланцем опорного кольца, при этом торцевые фланцы статора и опорного кольца выполнены контактирующими между собой с возможностью скольжения в поперечном направлении относительно оси ротора, а наибольшее расстояние от поверхностей скольжения стержней, обращенных к подшипнику, до тел качения подшипника равно радиусу тел качения. Изобретение позволяет повысить КПД, ресурс и надежность турбокомпрессора за счет снижения вибраций ротора ...

ЦЕНТРОБЕЖНЫЙ КОМПРЕССОРНЫЙ АГРЕГАТ

... 1. Центробежный компрессорный агрегат, содержащий компрессор, включающий установленный в корпусе на подшипниках вал с лопатками, установленные на валу газодинамические уплотнения и привод, связанный посредством соединительного элемента с валом компрессора, отличающийся тем, что привод расположен вне корпуса, одно из газодинамических уплотнений расположено между подшипником и соединительным элементом, при этом агрегат снабжен каналами подвода газа к подшипникам, а на роторной части подшипников установлены крыльчатки. ! 2. Агрегат по п.1, отличающийся тем, что каналы подвода газа к подшипникам соединены с, по меньшей мере, одним всасывающим патрубком. ! 3. Агрегат по п.1, отличающийся тем, что на каждом канале подвода газа установлен фильтр-сепаратор. ! 4. Агрегат по п.1, отличающийся тем, что соединительный элемент выполнен в виде сухой муфты.

Ротор турбокомпрессора

Изобретение относится к компрессоростроению и может быть использовано в турбокомпрессорах. Целью изобретения является повышение надежности и ремонтопригодности. Ротор турбокомпрессора содержит размещенные в корпусе вал 2, опорный и опорно-упорный подшипниковые узлы. Между корпусом опорно-упорного подшипникового узла и корпусом ротора установлена пластина. Внутренние втулки подшипниковых узлов снабжены буртами с отверстиями, расположенными со стороны, противоположной торцу вала. В валу выполнены отверстия, соосные отверстиям в буртах. Фиксирующий элемент выполнен в виде штифтов, установленных в отверстиях вала и буртов внутренних втулок. 1 ил.

LAGERHALTERUNG FUER LUEFTERTROMMELN

Vakuumpumpe

Gebläsegehäuseteil mit Lageraufnahme sowie Gebläse

Gebläsegehäuseteil (1) mit einer Einlassöffnung (2) zur Ansaugung von Gebläseluft und einer in der Einlassöffnung (2) gehaltenen Lageraufnahme (3) zur Lagerung eines Gebläsemotors, wobei die Lageraufnahme (3) eine zu einer Gebläsemotorseite offene Lagerbuchse (4) aufweist, die ausgebildet ist, zumindest ein Motorwellenlager (19) des Gebläsemotors aufzunehmen.

A cooling device for bearings

... 716,434. Shafts. AKTIEBOLAGET SVENSKA FLAKTFABRIKEN. Oct. 17, 1951 [Oct. 30 1950], No. 24260/51. Class 80 (2) [Also in Groups XXVI and XXXIV] A centrifugal fan for blowing hot gases has an impeller mounted at 27 on a solid shaft portion, to which solid portion is welded a tube having radial holes 33 and supporting the impeller by bearings positioned at 37, 38. Fan blades 32 mounted on radial rods 31 draw cooling air over the bearings and through the shaft and holes 33, and the. other end of the tube is packed with material such as rubbed asbestos to minimize heat conduction. Specification 607,800 is referred to.

Ducted fan gas turbine engine

CENTRIFUGAL COMPRESSORS

Bearing cage retainer

Disclosed is a bearing cage retainer 11 for a vacuum pump comprising a rolling element rotor bearing 1 with an outer race 5, inner race 2, and a plurality of rolling elements 6 within a rotatable bearing cage 7. The retainer is configured to engage the cage only when in a failure configuration. In one aspect the failure configuration is characterised by an axial displacement of the cage relative to the outer race, in another aspect by an audible signal and/or a change in vibration. The retainer may maintain a circumferential separation of the rolling elements in the failure configuration. The bearing cage retainer may be located; on a bearing retaining nut 12, between a felt pot and pump body, as part of a lubrication cartridge, as part of a lubrication stack, or as part of an oil delivery nut. Also disclosed is a turbomolecular pump with the abovementioned retainer, as well as a method of manufacturing a turbomolecular pump by installing an abovementioned retainer.

Ducted fan gas turbine engine

VACUUM PUMP

... 1479669 Bearings MASCHINENFABRIK AUGSBURG-NURNBERG AG 28 June 1974 [21 July 1973] 28949/74 Heading F2A [Also in Division F1] In a vacuum pump, e.g. a turbomolecular pump, having a rotor 1, Fig. 1, for withdrawing fluid from an inlet chamber 21 and discharging it through outlets 18, the rotor is supported within the pump housing solely by magnetic force without mechanical contact between the rotary and stationary parts. The embodiment shown includes radial and axial magnetic bearings, the radial bearings comprising three or four circumferentially-spaced U-shaped laminated cores 4 and associated windings 13 and an annular laminated core 7, whereas the axial bearings comprise laminated cores 8 and windings 16. In order to maintain the rotor in its central position, inductive or capacitive pickups or field sensors may be provided to measure the gaps 23, 24 and cause the magnetic force to be adjusted accordingly. The cores 8 and windings 16 may be eliminated, the opposed surfaces of the cores ...

LAGERZENTRIER-UND ABSORPTION SYSTEM FOR A VACCUM PUMP WITH MAGNETIC BEARINGS

CAMP CARRIER FOR A LÜFTERGEHÄUSE AND PROCEDURE FOR ITS PRODUCTION

BLOWER FOR ROLLING LARGE MASSES OF GAS OVER, IN PARTICULAR FOR HIGH-POWER LASERS.

TURBO COMPRESSOR WITH AIR-COOLED CAMP.

FAN MOTOR BEARING ASSEMBLY

PORTABLE VENTILATING APPLIANCE

FURNACE FAN ASSEMBLY

COMPLIANT ABRASION RESISTANT BEARINGS FOR A SUBMERSIBLE WELL PUMP

An electrical submersible pump assembly includes a centrifugal pump having impellers and diffusers. A thrust runner is coupled to a motor shaft for rotation along with the impellers. The runner receives thrust from at least one of the impellers and transfers the thrust to a bushing non rotatably mounted in one of the diffusers. The bushing has a thrust transferring end adjacent a thrust receiving shoulder in the diffuser. The bushing is axially movable in the receptacle. An annular spring located between the thrust receiving shoulder in the receptacle and the thrust transferring end of the bushing urges the bushing away from the thrust receiving shoulder.

COOLING MEANS FOR THE MOTOR OF A TURBOCOMPRESSOR

The turbocompressor (1) comprises an outwardly gas-tight housing (6) within which an electric motor (2) and also a multistage radial turbocompressor (3) are arranged on a common shaft (13) wherein, for the journalling of the shaft (13), electromagnetic radial bearings (5) are arranged spaced apart in the direction of its extent and wherein a gas seal (19) surrounding the shaft (13) is arranged between the electric motor (2) and the radial turbocompressor (3) in order to seal off the electric motor (2) with respect to the radial turbocompressor (3), wherein the electric motor (2) has an inner space (9b, 9c) which is connected in fluid conducting manner to an outlet opening (6h; 21) which passes through the housing.

Kreiselverdichter, insbesondere für Kälteanlagen.

Verfahren zur serienmässigen Herstellung von Wellenlagerungen für fliegend gelagerte Ventilatoren und gemäss diesem Verfahren hergestellte Wellenlagerung

Rauchgasventilator.

Presse für das Aufleimen von Furnieren oder Kunststoffprofilen auf Kanten von Verleimgut

DECOLLATOR FOR THE SEPARATION FROM PARTICLES FROM GASEOUS OR LIQUID MEDIA.

TURBO COMPRESSOR.

Turbomachine.

Drive unit with low RPM drive shaft and high RPM driven shaft

Each blank of the assembly is provided with heat resistant glue to provide for the bonding of the foldable sections of the blank together. The blanks may be used for one way mailing or may be provided with a business reply region for two way mailing. An in-line postcard imaging system is used to image, separate, fold and seal the postcards in a single continuous manner.

Bearing supporting and vibration reduction structure suitable for molecular pump

Connecting structure for gas compressor volute and bearing body of turbocharger

Dynamic pressure bearing and manufacturing method thereof

Integrated fan bearing structure

Bearing installation fixed knot construct and compressor

Booster with two footstep bearing structures

Fan bearing

Harvester fan

A turbocharger thrust bearing self-adaptive correction

Leak protection oil D formula centrifugal fan bearing frame

Air supply fan

Interior pressure balanced type prevents revealing bearing seal structure

Double-impeller fan based on coaxial

Rotary machine

Centrifugal compressor

Refrigerant lubricating type compressor and air conditioner

Oscillating mechanism and have its fan

Engine centrifugal impeller clearance adjusting mechanism and matching method

Centrifugal compressor

Ceramic bearing

Centrifugal fan

The invention provides a centrifugal fan which comprises a fan shell, an impeller and an electric drive assembly, an air cavity is formed in the fan shell, and an air inlet is formed in the outer wall of the fan shell; the impeller is rotationally arranged in the air cavity corresponding to the air inlet; the electric drive assembly comprises an axial magnetic flux motor, a bearing transmission part and a cooling fan capable of working independently, the axial magnetic flux motor is connected with the impeller through the bearing transmission part, and the cooling fan is arranged on the side, opposite to the bearing transmission part, of the axial magnetic flux motor. The axial magnetic flux motor is adopted as a main power source, and the cooling fan capable of independently working is arranged at the tail end of the axial magnetic flux motor, so that the technical problems of large equipment size, heavy weight and high energy consumption caused by the fact that a centrifugal fan is driven ...

TURBOJET ENGINE WITH OPTIMIZED BEARING ARCHITECTURE FOR THE SUPPORT OF A LOW-PRESSURE SHAFT

REVOLVING MACHINE HAS MAGNETIC AXIAL THRUST INTEGRATING A GENERATOR DECOURANT

ASSEMBLY OF the TUBES OF PRESSURIZATION Of an INTERNAL ENCLOSURE IN a TURBOSHAFT ENGINE

METHOD FOR MAKING A WORK PIECE WITH A SURFACE COATING OF LUBRICANT, WORK PIECE WITH ONE SUCH COATING AND TURBOMACHINE

TURBOSHAFT ENGINE HAS SYSTEM OF MAINTENANCE IN POSITION LONG LIFE

BEARING SEAL MEANS FOR AN ELECTRICALLY DRIVEN FAN

VACUUM PUMP

WHEREIN THE ROLLING SUPPORT TURBINE ENGINE

Un support de roulement pour un rotor d'un moteur à turbine d'aéronef comprend une liaison cassable conçue pour permettre d'arrêter le moteur de manière sûre en dépit de l'introduction d'un balourd excessif au niveau de l'étage de la soufflante.

압축기

... 압축기는 프레임, 로터 조립체, 및 히트싱크 조립체를 포함한다. 로터 조립체는 임펠러, 베어링 조립체 및 로터 코어가 고정되는 샤프트를 포함한다. 베어링 조립체는 한 쌍의 베어링을 포함하고, 히트싱크 조립체는 하나 이상의 히트싱크가 고정되는 슬리브를 포함한다. 다음에 슬리브는 베어링에 고정되고, 히트싱크는 프레임에 고정된다.

고속 베어링 장치

... 본 발명은 고속 베어링 장치에 관한 것으로써, 개시된 발명은 고속 회전체의 고속 회전축에 가해지는 부하를 지지해주기 위한 고속 베어링 장치에 있어서, 상기 고속 회전축의 외측둘레를 따라 설치되어 상기 고속 회전축을 방사형으로 지지해주며, 상기 고속 회전축의 회전에 따라 상기 고속 회전축의 외주면에 외륜이 접촉되어 함께 회전되고, 상기 고속 회전축 외경과 상기 외륜 외경의 지름비는 1:4.5 이상의 지름비를 갖는 복수의 지지 베어링과, 중심부의 전후로 상기 고속 회전축이 관통 설치되고, 내부에는 상기 지지 베어링이 각각 수용되면서 상기 지지 베어링의 내륜 중심에 고정되는 지지축이 구비된 하우징을 포함하여 구성됨을 특징으로 한다.

MAGNETIC BEARING TYPE VACUUM PUMP

CYLINDRICAL ROLLER BEARING FOR TURBO REFRIGERATOR

Provided is a cylindrical roller bearing for a turbo refrigerator, in which a silicon-containing DLC coating film is formed on the surface of an inner ring raceway and the concentration of silicon at the outermost surface of the DLC coating film is 1-17 atom %. By using this silicon-containing DLC coating film, it is possible to prevent, over a long period of time, damage caused by skidding.

BLOWER AND AIR CONDITIONER

A blower (13) is equipped with: an outer-rotor type motor (49) having a stator (43), a rotor (45), and a non-rotating shaft (80); a centrifugal or diagonal flow impeller (51) affixed to the rotor (45); and a bearing part (60) that supports the impeller (51) or the rotor (45) such that the impeller (51) is capable of rotation around the non-rotating shaft (80). The non-rotating shaft (80) has an outside shaft part (86) located farther outside than the stator (43) in the axial direction. The bearing part (60) is interposed between the outside shaft part (86) and the impeller (51) or the rotor (45). The center of gravity (51G) of the impeller (51) is located within the range (60S) of the bearing part (60).

ELECTRIC FAN AND ELECTRIC VACUUM CLEANER EQUIPPED WITH SAME

An electric fan (1) equipped with a rotor assembly (6) and a housing (20) accommodating the rotor assembly (6) and having a suction opening (20a) and an exhaust opening (20b). The rotor assembly (6) is equipped with: a shaft (11); an impeller (8) that is attached to the shaft (11) and that rotates, thereby generating negative pressure at the suction opening; a rotor core (10) attached to the shaft (11); and a pair of bearings (9) the inner circumferential side of which is attached to the outer circumference of the shaft (11) and the outer circumferential side of which is fastened to the housing (20). The pair of bearings (9) are arranged between the impeller (8) and the rotor core (10). The housing (20) is equipped with a frame (5) wherein a bearing holding part (13), which holds the outer circumferential surfaces of the pair of bearings (9) in contact, and a stator holding part (14), which holds a stator (7) driving the rotor core (10), are integrally formed.

RADIAL TURBO-BLOWER

The invention relates to a radial turbo-blower that comprises a stator (35) that is housed in a stator housing (10) and a rotor (13) that rotates within a pump housing (11). Said rotor (13) comprises a cavity (13) with a bearing system (26) that is received by a protruding bearing pin (25). The pump chamber (12) is separated from the stator chamber (22) by a thin partition (21), thereby maintaining in the stator chamber (22) an atmospheric pressure. The blower consists of few components and has a short length. It is substantially maintenance-free and the rotor area is protected from being contaminated by oil.

Electric fan and especially a fan of the flat type

The fan rotor has an axial passage for a stationary shaft, one end of which is secured to the housing. The other end is covered by a plug for sealing-off the axial passage near the impeller hub. An external cover-plate of heat-conducting material is placed over the plug and applied in good thermal contact with the annular end portion of the rotor which is associated with the impeller.

Crossflow fan supporting device for an air conditioner

An air conditioner includes a housing body in which are disposed a heat exchanger, a fan for circulating air across the heat exchanger, and a motor connected to one end of the fan for rotating the fan about an axis. Integrally formed on an opposite end of the fan is a bearing housing in which a bearing is disposed. The bearing has a center hole aligned with the axis. A bracket affixed to the housing includes a shaft which extends toward the fan and extends through the center hole of the bearing to rotatably support the fan.

CENTRIFUGAL BLOWER ASSEMBLY

A pair of spaced apart axially slidable stub shafts upon which a rotor is supportingly mounted, and a removable segment of the spiral shaped surface of a centrifugal blower housing are provided for servicing and facilitating installation and removal of the rotor from the blower structure.

TURBO BLOWER FOR LASER AND LASER OSCILLATION DEVICE EMPLOYING THE TURBO BLOWER

PCT No. PCT/JP90/01227 Sec. 371 Date May 22, 1991 Sec. 102(e) Date May 22, 1991 PCT Filed Sep. 21, 1990 PCT Pub. No. WO91/05384 PCT Pub. Date Apr. 18, 1991.A turbo blower is used in combination with a gas laser oscillation device for machining, e.g., cutting off, workpieces. The turbo blower comprises a shaft (2) having an impeller (1) on one end thereof, a pair of bearings (5, 6) on which the shaft (2) is supported, and a motor (3, 4) for rotating the shaft. Heat radiating fins (11) are mounted on the shaft (2) for radiating the heat which is generated by a rotor (3) of the motor, thus preventing the heat from being transmitted to the bearings (5, 6). The heat radiating fins are forcibly cooled by a portion of a laser gas for thereby greatly increasing the heat radiation efficiency. The service life of the grease in the bearings and the bearings themselves is increased, thus reducing an expenditure of labor for grease replenishment and bearing replacement. The bearings are also increased ...

High-speed rotor assembly for an overhung centrifugal compressor

The invention provides a high-speed rotor assembly for an overhung centrifugal compressor comprising a housing, a rotor component, an oil film damper and an impeller, which is adapted for connecting to a power output mechanism, wherein the rotor component is arranged inside the housing, and the oil film damper is disposed between the impeller and the rotor component, and the impeller is coupled to the rotor component. The rotor component further comprises a sleeve, a first bearing, a second bearing, a transmission shaft, a plurality of resilient elements and a spacer, wherein an end of the sleeve is connected to one of the circular rib by a screw while another end thereof is handing freely, and a oil film damper is disposed between the sleeve and another circular rib. Moreover, the first bearing and the second bearing are respectively arranged at the two side of the sleeve, and the spacer is arranged between the two bearings with the two end thereof respectively abutted against the inner ...

METHOD OF ASSEMBLING A SET OF IMPELLERS THROUGH TIE RODS IMPELLER AND TURBOMACHINE

A set of impellers that are axially adjacent to each other and that have respective axial through holes are assembled. At least a first and a second axial tie rods are used. At least one connection element being axially adjacent to two impellers respectively at its two sides and having an axial through hole is provided. The connection element is used for securing, at one side of its axial through hole, an end of the first axial tie rod and, at the other side of its axial through hole, an end of the second axial tie rod. Typically, the connection element is one of the impellers of the set.

Split turbocharger bearing assembly

A turbocharger bearing assembly of a split turbocharger for an engine is disclosed in which key rotational parts are rotatably supported by a pair of spaced apart bearings located in a bore of a tubular bearing housing forming part of a bearing assembly. The rotational parts of the turbocharger bearing assembly are balanced as a unit before the turbocharger bearing assembly is assembled to a cylinder block of the engine by insertion into a bore formed in the cylinder block.

Metal bearing liner and axial flow fan motor provided with the same

A metal bearing liner is formed by deep drawing press process sequentially subjecting a progressive sheet material (roll material) to a plurality of press processes. This makes it possible to form a metal bearing liner by a press work instead of a cutting work that has been conventionally employed while maintaining a requisite accuracy such as roundness and cylindricality thereby remarkably reducing the manufacturing cost of the metal bearing line thereby.

Motor-Driven Fan With Trapped Adhesive for Minimizing Vibration

HVLP (High Velocity Low Pressure) motor-driven fans and other types of fans, blowers and vacuums take advantage of different thermal and mechanical properties of dissimilar materials used in the motor-driven fans. The dissimilar materials include aluminum for a stacked arrangement of fan wheels and spacers, steel for a shaft that supports the fan wheels and spacers, and a polymeric adhesive. In some examples, the polymeric adhesive is trapped between the aluminum and steels parts. Compared to steel and aluminum, the adhesive has a relatively high coefficient of thermal expansion but relatively low strength such that thermal expansion of the adhesive exerts additional clamping pressure during startup and during high temperature operation. The additional clamping pressure reduces vibration and eliminates other causes of fan or motor failure.

MOTOR AND A HANDHELD DEVICE HAVING A MOTOR

A handheld device comprising a motor for generating an airflow through the device, the motor including: a frame for supporting a rotor assembly and a stator assembly, the frame including an inner wall and an outer wall and a plurality of diffuser vanes extending between the inner wall and outer wall; a rotor assembly including a shaft, a magnet, a bearing assembly and an impeller; and a stator assembly including a bobbin, a stator core and a winding wound around the bobbin; the frame being formed of zinc and the impeller being formed of aluminium.

OSCILLATING STRUCTURE WITH TWO SIDES FIXED AND MIDDLE CAPABLE OF MAKING RECIPROCATING ROTATION

The disclosure relates to an oscillating structure with two sides fixed and a middle capable of making reciprocating rotation, which belongs to the technical field of fans. The oscillating structure comprises a hardware support, a right plastic support, a driving mechanism, a left plastic support, a driven mechanism and a rotary swinging mechanism. According to the disclosure, through the cooperation of the driving mechanism and the driven mechanism with the rotary swinging mechanism, and under the driving of the driving mechanism and with the cooperation of the driven mechanism, the rotary swinging mechanism achieves the effect of horizontal or vertical placement or oscillating at any angle of 360 degrees, thus being more practical.

BEARING CONDITION MONITORING DEVICE, TURBOCHARGER, AND BEARING CONDITION MONITORING METHOD

A bearing condition monitoring device is a bearing condition monitoring device for monitoring a condition of a thrust bearing for holding a rotational shaft in a thrust direction. The bearing condition monitoring device includes a first temperature sensor for measuring a temperature of the thrust bearing, and an arithmetic device for counting a frequency at which an evaluation index of a thrust load on the basis of a measurement value by the first temperature sensor exceeds an allowable value, and for outputting an abnormality in the condition of the thrust bearing if the counted frequency exceeds a threshold. The arithmetic device may count, as the frequency, only a case where a state in which the thrust load exceeds an upper limit load continues for not less than a predetermined time.

Magnetic bearing device and pump device with the magnetic bearing device mounted thereto

A magnetic bearing device is provided which is capable of reducing vibration, as well as electric andmagnetic noise, generated from a pump device while making it possible to control the position of a rotor at high speed and high power. Also provided is a pump device having the magnetic bearing device mounted thereto. Switching is made between a high voltage mode in which an electromagnet coil 151 is supplied with electric power from a high voltage power source 171 and a low voltage mode in which the electromagnet coil 151 is supplied with electric power from a low voltage power source 271. The switching is made based on whether or not a current change speed diL/dt is below a reference current change speed diLs/dt. When the current change speed diL/dt is equal to or larger than the reference current change speed diLs/dt, the device is switched to the high voltage mode. When the current change speed diL/dt is less than the reference current change speed diLs/dt, the device is switched to ...

CENTRIFUGAL PUMP ASSEMBLIES HAVING AN AXIAL FLUX ELECTRIC MOTOR AND METHODS OF ASSEMBLY THEREOF

TURBOMACHINE, IN PARTICULAR A COMPRESSOR DEVICE

Partition for sealing the rear section of a radial compressor

Die Zwischenwand (40) zur Abdichtung des Rückraums des Verdichterrades (71) eines Radialverdichters bezüglich eines von einem Lagergehäuse (30) umschlossenen Lagerraums weist einen umlaufenden, rotationssymmetrisch geformten Befestigungsflansch (41) auf, welcher zur Befestigung der Zwischenwand an dem benachbarten Lagergehäuse vorgesehen ist und welcher eine plane Kontaktfläche zur Auflage auf einer Kontaktfläche des Lagergehäuses aufweist. Dabei sind in den Befestigungsflansch mehrere Bohrungen (42, 43) auf einer virtuellen Kreislinie eingelassen, wobei die Bohrungen mindestens einen Sperrluftkanal (42) sowie mehrere, in Umfangsrichtung auf der virtuellen Kreislinie verteilt angeordnete Bohrungen (43) zur Aufnahme von Befestigungsmitteln (50) umfassen. Die Zwischenwand ist erfindungsgemäss als eine rotationssymmetrische Scheibe ausgebildet, welche in der Herstellung durch das Bearbeitungsverfahren Drehen und ohne weitere Fräsbearbeitung in ihre endgültige Form gebracht werden kann. Für ...

Fan Motor and microwave oven having the same

A fan motor (20) having a simple construction and a microwave oven equipped with the fan motor (20). The fan motor (20) includes a stator (21), a rotor (25), a rotating shaft (26) extending from both ends of the rotor (25), a support unit (27) mounted to a front of the stator (21), and a bearing (32) inserted in a through hole (28) of the support unit (27). The bearing (32) forwardly extends from the support unit (27), and is set into a boss mounted to a rear of the support unit (27). A stopper (35) in front of the bearing (32) fits over an insert groove formed at an outer surface of the rotating shaft (26), and is stopped by a front end of the bearing (32), preventing the rotating shaft (26) from being rearwardly removed from the stator (21). A blowing fan (12) mounted to a front end of the rotating shaft (26) cools electrical devices and ventilates a cooking cavity (3) of the microwave oven.

A THRUST BEARING DEVICE, PARTICULARLY FOR TAKING UP OSCILLATING ROTATIONAL MOVEMENTS

A thrust bearing device, particularly for taking up oscillating rotational movements, for example for use as a blade suspension bearing in an axial flow fan, in which two coaxial thrust bearings which are coupled in series with respect to their loading forces are individually restricted by means of a blocking device to be allowed to turn in one or the other direction of revolution only, so that each roller (3, 4) in each of the two bearings at each rotational movement will be displaced to local engagement against a new point of contact one each of the races (1, 10; 11, 2) in question. The blocking device is constructed to allow stepless relative rotational movement between mutually immovable races (10, 11) in each of the two bearings and one or the other of two relatively movable races (1, 2) belonging to each of the two bearings. The blocking device may be constituted by a spring coupling comprising two helical springs (13, 14), each of which is arranged for exerting spring action on race ...

Turbomolecular pump and bearing assembly therefor

A single ended turbomolecular vacuum pump operable in the free moleclar flow pressure range having an improved bearing assembly between the motor rotor and the pump rotor discs is disclosed. The improved bearing assembly which is of the "plain" or "sleeve" liquid lubricated type has a relatively high ratio of journal diameter to bearing axial length. The improved bearing assembly is characterized by improved heat transmission capabilities, high tolerance for misalignment and long life.

SEALED MAGNETIC BEARINGS FOR CIRCULATION FAN

TURBOMACHINE ARRANGEMENT

Strömungsmaschinenanordnung (10), mit mindestens einer ein- oder mehrstufigen Kompressorsektion (11) zur Druckerhöhung eines Arbeitsmediums, wobei die jeweilige Kompressorsektion (11) eine Kompressorwelle (13) aufweist, mit einer elektrischen Maschine (16), die eine Welle (17) aufweist, wobei die jeweilige Kompressorwelle (13) koaxial zu der Welle (17) der elektrischen Maschine verläuft, wobei die jeweilige Kompressorwelle (13) mit der Welle (17) der elektrischen Maschine gekoppelt ist, wobei die elektrische Maschine (16) und die jeweilige Kompressorsektion (11) in einem gemeinsamen, hermetisch dichten, ein- oder mehrteiligen Gehäuse (18) angeordnet und über Lager (19) im Gehäuse gelagert sind, derart, dass die jeweilige Kompressorsektion (11), die elektrische Maschine (16) und die Lager (19) allesamt von dem Arbeitsmedium umspült sind, mit einer Zuführleitung (14), über die der Strömungsmaschinenanordnung unverdichtetes Arbeitsmedium zuführbar ist, mit einer Abführleitung (15), über die ...

ELECTRIC BLOWER

PURPOSE: To control the direction of resin flow in a molding process by providing a thick boss for forming gate outside the bearing housing made integrally with and end bracket on the opposite side of a fan, and connecting the boss with the bearing housing with a thin rib. CONSTITUTION: The both ends of the shaft 18 of a rotor 15, constituting a motor 11 together with a stator 14, are supported rotatably by ball bearings 16 and 17, and a fan 19 is fixed to the projected portion of a shaft 18 projected through an end bracket 12. The bearing 17 on the fan side is fixed to the bearing housing 12b of the end bracket 12 by means of press-fitting, etc., and the bearing 16 on the opposite side of the fan is loosely held by the bearing housing 13a of the end bracket 13, and a pre-pressure is given to the bearing 16 by means of an wave washer 21. A thick boss 23 for forming gate is provided outside the bearing housing 13a, and the boss 23 and the housing 13a are connected to each other with a thin ...

ТУРБОКОМПРЕССОР, ПРИВОДИМЫЙ В ДЕЙСТВИЕ ОТРАБОТАВШИМИ ГАЗАМИ

Турбокомпрессор (10, 10′), приводимый в действие отработавшими газами, для двигателя внутреннего сгорания содержит датчик (32) частоты вращения и элемент (30, 30′, 40, 40′, 40″) в виде втулки для осевой фиксации по меньшей мере одного подшипника (24, 26) вала (22) турбокомпрессора. Элемент (30, 30′, 40, 40′, 40″) в виде втулки на периферийной поверхности (46, 46′, 46″) содержит по меньшей мере одно сквозное отверстие (48, 48′, 48″), через которое датчик частоты вращения проходит через элемент (30, 30′, 40, 40′, 40″) в виде втулки. По меньшей мере одно сквозное отверстие (48, 48′, 48″), по меньшей мере, в своей части имеет по существу коническую форму в радиальном направлении элемента (30, 30′, 40, 40′, 40″) в виде втулки. Достигается упрощение сборочно-монтажных работ за счёт корректировки углового положения втулки непосредственно при установке датчика за счёт конической формы отверстия. 4 з.п. ф-лы, 5 ил.

UNDUCTED FAN FOR TURBINE ENGINE

An unducted fan of variable-pitch blades including roots engaged from outside in respective radial housings of an annular rotor element and guided to turn about their respective axes by pairs of rolling bearings, one of which is carried by an annular segment of a cylindrical skirt mounted in a groove of the annular body and by a locknut screwed onto the cylindrical skit. The bearing is covered externally by a ring including outer dog-clutch teeth co-operating with inner dog-clutch teeth of the housing to hold the ring axially in the housing. A blocking mechanism is engaged between the teeth of the housing and the teeth of the ring preventing the ring from turning and preventing the ring from being withdrawn axially from the housing. 111-. (canceled)12. An unducted fan for a turbine engine , comprising:fan blades mounted to turn about their respective axes in radial housings of an annular rotor element, each blade including a root with a cylindrical body engaged from outside in a radial housing and guided to turn about its axis in the housing by first and second rolling bearings,wherein the first bearing is carried by an annular rim of the radial inner end of the housing,the second bearing is carried by an annular segment of a cylindrical skirt mounted in a groove of the cylindrical body and by a locknut screwed onto the cylindrical skirt of the segment and forming a spacer bearing against the first bearing, the second bearing being covered on the outside by a ring surrounding the cylindrical body of the blade root and including outer dog-clutch teeth co-operating with inner dog-clutch teeth of the housing to retain the ring axially in the housing, andblocking means are engaged between the dog-clutch teeth of the housing and between the dog-clutch teeth of the ring to prevent the ring from turning and being extracted axially from the housing.13. A fan according to claim 12 , further comprising an annular cover surrounding the blade root screwed onto the outer end of ...

FOIL BEARING SUPPORTED MOTOR-DRIVEN BLOWER

A high-speed blower designed to move and circulate dry process gas includes an axial or mixed-flow compressor driven by a brushless permanent magnet synchronous motor utilizing a remotely mounted variable frequency drive. The blower uses foil gas bearings which enable high-speed, low-power loss, and oil-free operation. The blower comprises an outer blower housing and an inner blower housing defining an annular cavity therebetween. A cooling flow of process gas may be leaked through the inner blower housing to cool the internal operational components of the blower, including the motor and the bearings, and to capture heat therefrom, which can be added to the process gas flow moving through the blower. Diffuser vanes and flow-straightening vanes are provided on the outer surface of the inner blower housing to improve the fluid dynamics of the process gas flow through the blower and heat transfer from the inner blower housing. 1. A blower for moving dry process gas , comprising:an outer blower housing having an inlet and an outlet;a flow compressor mounted within the outer blower housing at the inlet end thereof for rotation about an axis, whereby rotation of the flow compressor generates a dry process gas flow through the outer blower housing between the inlet and the outlet; andan inner blower housing mounted within the outer blower housing adjacent to the flow compressor, said inner blower housing defining an internal passage between an inlet and an outlet thereof and including therein a motor, a rotating assembly operatively associated with the motor for rotating the rotating assembly about an axis, at least two journal bearing assemblies and at least one thrust bearing assembly;wherein an annular cavity is defined between the outer blower housing and the inner blower housing, said inner blower housing includes a plurality of three-dimensional diffuser vanes mounted to the outer surface thereof and projecting into the annular cavity for redirecting the dry process ...

MID-SPAN GAS BEARING

A centrifugal compressor includes a rotor assembly with a shaft and a plurality of impellers, bearings located at ends of the shaft and configured to support the rotor assembly, a sealing mechanism disposed between the rotor assembly and the bearings, and a gas bearing disposed between the plurality of impellers for supporting the shaft and receiving a working gas from an impeller downstream from a location of the gas bearing. 1. A centrifugal compressor ,. comprising:a rotor assembly including a shaft and a plurality of impellers;a pair of bearings located at ends of the shaft and configured to support the rotor assembly;a sealing mechanism disposed between the rotor assembly and the bearings; anda first gas bearing disposed between the plurality of impellers and configured to support the shaft, the first gas bearing receiving a working gas from an impeller located downstream from a location of the first gas bearing.2. The centrifugal compressor of claim 1 , wherein the first gas bearing is located at a point that is half way between the plurality of impellers in the compressor.3. The centrifugal compressor of claim 1 , wherein the first gas bearing is located at a point beyond a half way between the plurality of impellers in the centrifugal compressor.4. The centrifugal compressor of claim 1 , wherein the working gas is one of carbon dioxide claim 1 , hydrogen sulfide claim 1 , butane claim 1 , methane claim 1 , ethane claim 1 , propane claim 1 , liquefied natural gas claim 1 , or a combination thereof5. The centrifugal compressor of claim 1 , wherein the pair of bearings are oil bearings.6. The centrifugal compressor of claim 5 , wherein an operating surface speed of the first gas bearing is higher than an operating surface speed of the oil bearings.7. The centrifugal compressor of claim 6 , wherein the operating surface speed of the first gas bearing is at least twice the operating surface speed of the oil bearings.8. The centrifugal compressor of claim 1 , ...

TURBOCHARGER, NOTABLY FOR A COMBUSTION ENGINE

Turbocharger comprising a shaft, a housing, a turbine wheel and a compressor wheel mounted onto the shaft, at least one rolling bearing located between the shaft and the housing and comprising an inner ring, an outer ring and at least one row of rolling elements between raceways provided on the rings. 1. A turbocharger comprising:a shaft,a housing,a turbine wheel, anda compressor wheel mounted onto the shaft, and an inner ring, an outer ring, and at least one row of rolling elements between raceways provided on the rings, and wherein', 'the turbocharger further provides at least one intermediate sleeve radially located between the shaft and the inner ring of the rolling bearing., 'at least one rolling bearing located between the shaft and the housing and having2. The turbocharger according to claim 1 , wherein the intermediate sleeve includes at least one end axially extending further than a radial lateral surface of the inner ring of the rolling bearing.3. The turbocharger according to claim 2 , wherein the at least one end of the intermediate sleeve includes at least one positioning means adapted to cooperate with an external tool.4. The turbocharger according to claim 3 , wherein the positioning means includes at least one annular groove.5. The turbocharger according to claim 3 , wherein the positioning means provides at least one threaded portion.6. The turbocharger according to claim 3 , wherein the positioning means includes at least one radial hole or opening.7. The turbocharger according to claim 3 , wherein the positioning means provides at least one radial through-hole or through-opening claim 3 , made through the thickness of the intermediate sleeve.8. The turbocharger according to claim 1 , wherein the intermediate sleeve includes at least one axial slot provided axially on all the axial length of the intermediate sleeve.9. The turbocharger according to claim 1 , wherein the intermediate sleeve has a stepped bore adapted to cooperate with a stepped outer ...

BEARING APPARATUS AND BLOWER FAN

A bearing apparatus includes a bearing portion; a shaft; an upper thrust portion; a rotor cylindrical portion extending downward from an outer edge portion, and arranged radially outward of the bearing portion; and an annular seal cover fixed to an outer circumferential surface. A seal portion having a surface of lubricating oil defined therein is defined in a seal gap defined between an inner circumferential surface of the rotor cylindrical portion and an outer circumferential surface of the bearing portion. The seal cover includes a fixing portion fixed to the outer circumferential surface of the rotor cylindrical portion; and an inner flange portion extending radially inward from the fixing portion below a lower end portion of the rotor cylindrical portion, and having an inner circumferential portion arranged opposite to the outer circumferential surface of the bearing portion to define a vertical gap together with the outer circumferential surface. 1. A bearing apparatus comprising:a bearing portion arranged substantially in a shape of a cylinder with a bottom;a shaft inserted in the bearing portion, and arranged to rotate about a central axis relative to the bearing portion;an upper thrust portion arranged to extend radially outward from an upper end portion of the shaft;a rotor cylindrical portion arranged to extend downward from an outer edge portion of the upper thrust portion, and arranged radially outward of the bearing portion; andan annular seal cover fixed to an outer circumferential surface of the rotor cylindrical portion; whereinan inner circumferential surface of the rotor cylindrical portion and an outer circumferential surface of the bearing portion are arranged to together define a seal gap therebetween, the seal gap including a seal portion having a surface of a lubricating oil defined therein;an inner circumferential surface of the bearing portion and an outer circumferential surface of the shaft are arranged to together define a radial gap ...

Hermetic compressor

A hermetic compressor includes: a crank shaft rotated by using an axial direction as a rotational axis; a stator rotating the crank shaft; a first bearing penetrated by the crank shaft and rotatably coupled to one side of the crank shaft based on the stator to support one side of the crank shaft when the crank shaft is rotated; a support part having one side provided at the stator and the other side disposed to be adjacent to the other side of the crank shaft, based on the stator; and a second bearing coupled to the other side of the support part and supporting the other side of the crank shaft.

TURBOCHARGER AND METHOD OF MANUFACTURING FLOATING BUSH

A turbocharger and a method of manufacturing a floating bush with which noise can be reduced, and the rotation speed can be increased. In a turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner, at two axially separated positions via floating bushes, by an inner circumferential surface disposed so as to surround the rotating shaft in a bearing housing, an inner circumferential surface of each of the floating bushes has a non-circular shape in which the curvature of the cross-sectional shape varies in the circumferential direction. 1. A turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner , at two axially separated positions via floating bushes , by a support portion disposed so as to surround the rotating shaft in a housing ,wherein an inner circumferential surface of each of the floating bushes has a non-circular shape in which a curvature of a cross-section varies in a circumferential direction.2. The turbocharger according to claim 1 , wherein an outer circumferential surface of each of the floating bushes has a non-circular shape in which a curvature of a cross-section varies in a circumferential direction.3. The turbocharger according to claim 1 , wherein an inner circumferential surface of the support portion has a non-circular shape in which a curvature of a cross-section varies in a circumferential direction.4. A turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner claim 1 , at two axially separated positions via floating bushes claim 1 , by a support portion disposed so as to surround the rotating shaft in a housing claim 1 ,wherein an inner circumferential surface of the support portion has a non-circular shape in which a ...

THRUST BEARING STRUCTURE AND SUPERCHARGER EQUIPPED WITH SAID THRUST BEARING STRUCTURE

A thrust bearing structure is equipped with a thrust collar having a collar pad, and a thrust bearing having a bearing pad at a position corresponding to the collar pad on a surface facing the thrust collar. The bearing pad has a tapered section, and a land section continuously formed on the outer edge of the tapered section. Assuming that oil droplets are supplied between the bearing pad and the collar pad, and assuming that the rotation speed of a rotor shaft is constant, the tapered section would have a sloping surface formed in such a manner that a wall thickness gradually becomes thicker toward the downstream side along the trajectory of given oil droplets based on the centrifugal forces acting on the droplets due to the rotation of the rotor shaft. 1. A thrust bearing structure configured to bear a thrust load in an axial direction acting on a rotor shaft , comprising:a thrust collar fixed to the rotatable rotor shaft; anda thrust bearing facing the thrust collar, whereinthe thrust collar includes a collar pad on a surface thereof facing the thrust bearing,the thrust bearing includes a bearing pad on a surface thereof facing the thrust collar at a position corresponding to the collar pad,any one pad of the collar pad and the bearing pad includes a tapered section, and a land section formed continuously with an outer edge of the tapered section,given an oil droplet between the bearing pad and the collar pad, the tapered section includes a sloping surface formed in such a manner that a wall thickness of the tapered section gradually becomes thicker along a trajectory of the oil droplet toward a downstream side thereof, the trajectory determined based on a centrifugal force generated by rotation of the rotor shaft and applied to the oil droplet, andthe land section has a flat surface which is orthogonal to a shaft center of the rotor shaft.2. The thrust bearing structure according to claim 1 , wherein the any one pad is formed into an annular shape.3. The thrust ...

BEARING UNIT FOR A TURBOCHARGER

A bearing unit for a turbocharger, including a bearing housing extending in an axial direction and also including a bearing cartridge arranged within the bearing housing, wherein between the outer circumference of the bearing cartridge and the bearing housing there is formed an intermediate space with an oil film, and wherein the bearing housing has a supply bore formed for the supply of oil to the oil film. The bearing cartridge includes a rolling bearing, the outer cartridge ring of which is mounted in a freely rotatable manner in the oil film. A bearing unit for a turbocharger, the bearing cartridge of which includes a rolling bearing, the bearing outer ring of which is mounted in a freely rotatable manner in the oil film. By means of bearing units of such design, it is possible to ensure the secure mounting of a shaft even without a separate twist prevention device. 110-. (canceled)11: A bearing unit for a turbocharger , comprising:a bearing housing extending in an axial direction; anda bearing cartridge arranged inside the bearing housing, an interspace with an oil film being formed between the outer circumference of the bearing cartridge and the bearing housing, the bearing cartridge having an outer cartridge ringthe bearing housing having a supply hole for oil supply of the oil film, the bearing cartridge including an anti-friction bearing, the outer cartridge ring being supported in the oil film in a freely rotatable manner.12: The bearing unit as recited in wherein the supply hole in the bearing housing communicates with a groove surrounding the bearing cartridge in a circumferential direction.13: The bearing unit as recited in wherein the outer cartridge ring comprises a multiplicity of drainage holes for drainage of oil.14: The bearing unit as recited in wherein the outer cartridge ring is a two part structure including two ring parts axially spaced apart.15: The bearing unit as recited in further including at least one lock for axial locking of the outer ...

FAN COMPRISING NANO-BEARING

A fan including: a fan frame, a casing, fan blades, a magnetic piece, silicon steel sheets, a coil, a circuit board, a nano-bearing, and a rotational shaft of a motor. The fan frame is disposed at a bottom of the fan. The casing is disposed above the fan frame. The fan blades encircle the casing and are staggered with respect to one another. The magnetic piece is in a ring shape and is attached to an inner wall of the casing. The silicon steel sheets are stacked together, and disposed in a circle inside the magnetic piece. The coil is wound on the silicon steel sheets. The nano-bearing is disposed in a center of the silicon steel sheets. The rotational shaft of the motor is disposed inside the nano-bearing. The circuit board is connected to the coil wound on the silicon steel sheets. 2. The fan of claim 1 , wherein the nano-bearing comprises an outer ring and an inner ring;the inner ring comprises: an upper ring-shaped structure, a lower ring-shaped structure, and an accommodating chamber;the upper ring-shaped structure and the lower ring-shaped structure are discontinuously arranged;the accommodating chamber is disposed in a middle part of the inner ring between the upper ring-shaped structure and the lower ring-shaped structure;an oil storing cotton is disposed inside the accommodating chamber; andthe outer ring and the inner ring are made of nano-materials.3. The fan of claim 1 , wherein the nano-bearing is made of a nano-ceramic material claim 1 , a nano-silicon carbide material claim 1 , a nano-zirconia material claim 1 , or a nano-silicon nitride.4. The fan of claim 2 , wherein the nano-bearing is made of a nano-ceramic material claim 2 , a nano-silicon carbide material claim 2 , a nano-zirconia material claim 2 , or a nano-silicon nitride.5. The fan of claim 1 , wherein nano-wear resistant layers are attached to an inner wall of the outer ring and/or an outer wall of the inner ring.6. The fan of claim 2 , wherein nano-wear resistant layers are attached to an ...

BEARING MECHANISM, MOTOR, AND BLOWER FAN

In a bearing mechanism according to a preferred embodiment of the present invention, a seal portion in which a surface of a lubricating oil is located is defined in a seal gap defined between an outer circumferential surface of a first tubular portion and an inner circumferential surface of a second tubular portion. The first tubular portion includes, in an area where the outer circumferential surface of the first tubular portion is in contact with the lubricating oil, a maximum outside diameter portion at which the outside diameter of the first tubular portion is greatest, an annular shoulder portion including a surface facing toward the surface of the lubricating oil and at which the outside diameter is smaller than at the maximum outside diameter portion, and an inclined portion at which the outside diameter gradually decreases from the annular shoulder portion toward the surface of the lubricating oil. 1. A bearing mechanism comprising:a first component portion including a first tubular portion centered on a central axis extending in a vertical direction;a second component portion including a second tubular portion centered on the central axis, and arranged to be rotatable relative to the first component portion, an inner circumferential surface of the second tubular portion being arranged radially opposite an outer circumferential surface of the first tubular portion; anda lubricating oil; whereinone of the first and second component portions includes a shaft centered on the central axis, while the other of the first and second component portions includes a sleeve in which the shaft is inserted;the lubricating oil is arranged to continuously exist between a portion including the sleeve and a portion including the shaft;a radial dynamic pressure bearing portion is defined between the shaft and the sleeve, or a thrust dynamic pressure bearing portion is defined in a thrust gap between an upper surface of the sleeve and a member opposed to the upper surface of the ...

Vacuum pump

A vacuum pump has a working space, a bearing space, a dividing wall arranged between the working space and the bearing space and at least one rotor shaft which extends through the dividing wall and which forms a gap with the dividing wall and having a blocking device for blocking between the working space and the bearing space. The blocking device is formed by a Siegbahn pump stage which is configured for providing a pump action passing through the gap between the working space and the bearing space. 1121416121412141816201622121420. A vacuum pump , comprising a working space () , a bearing space () , a dividing wall () arranged between the working space () and the bearing space () , a blocking device for blocking between the working space () and the bearing space () and at least one rotor shaft () , the rotor shaft extending through the dividing wall () and forming a gap () with the dividing wall () , wherein the blocking device is formed by a Siegbahn pump stage () , the Siegbahn pump stage being configured to provide a pump action between the working space () and the bearing space () , with the pumping action passing through the gap ().2. The vacuum pump in accordance with claim 1 , wherein the pump is one of a turbomolecular pump and a side-channel pump.322142012. The vacuum pump in accordance with claim 1 , wherein the Siegbahn pump stage () is configured to provide a pump action from the bearing space () via the gap () into the working space ().42224262426283022. The vacuum pump in accordance with claim 1 , wherein the Siegbahn pump stage () comprises a stator member () and a rotor member () claim 1 , wherein the stator member () and the rotor member () each form one of two mutually oppositely disposed surfaces ( claim 1 , ) acting as pumps of the Siegbahn pump stage ().52830. The vacuum pump in accordance with claim 4 , wherein one surface () acting as a pump is formed by a structured surface and the other surface () acting as a pump is formed by a planar ...

BLOCKING DEVICE OF A FAN

A blocking device () for a fan that blocks a direction of rotation of a rotor (), via which a wheel of the fan can be driven. The blocking device has a bearing tube (), a rotor shaft () and a freewheel sleeve (). The freewheel sleeve () is accommodated in the bearing tube () and is connected to the rotor shaft (), which extends through the freewheel sleeve (), for conjoint rotation. The freewheel sleeve () blocks rotation of the rotor shaft () at least in relation to the bearing tube () in the direction of rotation of the rotor. 115.-. (canceled)16. A blocking device for a fan that blocks a direction of rotation of a rotor , via which a fan wheel of the fan can be driven , comprising:a bearing tube, a rotor shaft and a freewheel sleeve;the freewheel sleeve is accommodated in the bearing tube; the freewheel sleeve is connected to the rotor shaft, that extends through the freewheel sleeve, for conjoint rotation;the freewheel sleeve blocks rotation of the rotor shaft at least in relation to the bearing tube in one direction of rotation of the rotor.17. The blocking device according to claim 16 , further comprising a bushing where the freewheel sleeve is fixed for conjoint rotation therewith claim 16 , the bushing limits rotation of the freewheel sleeve in relation to the bearing tube.18. The blocking device according to wherein the bushing forms a contact surface in the axial direction and the bearing tube forms an abutment surface facing each other claim 17 , and the contact surface of the bushing abuts against the abutment surface of the bearing tube.19. The blocking device according to claim 16 , wherein the rotor shaft is supported on the bearing tube by at least one bearing.20. The blocking device according to claim 19 , wherein a spring is positioned between the bearing and the bushing claim 19 , which push the bearing and the bushing apart in the axial direction.21. The blocking device according to claim 20 , wherein the bearing is fixed in the axial direction ...

PRELOAD FORCE TOOL

The invention relates to a bearing preload force gauge for indicating the bearing preload force on a turbomolecular pump rotor bearing. The gauge comprises a housing, an indicator for indicating the bearing preload force, and actuator coupled to an impeller engagement surface by a member configured to provide a resilient bias between the actuator and the impeller engagement surface. The invention also relates to a bearing preload tool and methods for measuring the bearing preload force on a turbomolecular pump. 1. A bearing preload force gauge for indicating the bearing preload force on a turbomolecular pump rotor bearing , the gauge comprising a housing , an indicator for indicating the bearing preload force , and actuator coupled to an impeller engagement surface with a member configured to provide a resilient bias between the actuator and the impeller engagement surface.2. The gauge according to claim 1 , wherein claim 1 , in use claim 1 , the bearing preload force is indicated by coupling the impeller engagement surface with a pump impeller and moving the actuator relative to the engagement surface against the action of the resilient bias member to overcome the bearing preload force.3. The gauge according to wherein the actuator claim 1 , the resilient bias member claim 1 , and an impeller location member comprising the impeller engagement surface are movable in a reciprocating motion relative to the housing.4. The gauge according to wherein when the bearing preload force is overcome the indicator provides an indication as to whether the bearing preload force is within or outside a predetermined preferred range.5. The gauge according to wherein when the bearing preload force is overcome the indicator provides a first indication if the bearing preload force is within the predetermined preferred range.6. The gauge according to wherein when the bearing preload force is overcome the indicator provides a second indication if the bearing preload force is outside the ...

SYSTEM FOR A COMBINED TURBINE AND BEARING CASE FOR A TURBOCHARGER

Various systems are provided for a single turbocharger case housing each of turbine of a turbocharger and a bearing of the turbocharger. In one example, an apparatus for an engine includes an integrated, monolithic turbocharger case that houses each of a turbine and a bearing of a turbocharger and a nozzle ring integrated into the turbocharger case between the turbine and the bearing. In further examples of the system, portions of the turbocharger case are formed of a lattice structure. 1. An apparatus for an engine , comprising:an integrated, monolithic turbocharger case that houses each of a turbine of a turbocharger and a bearing of the turbocharger, the turbocharger case having a thickness and one or more regions of the turbocharger case within the thickness defining a lattice structure; anda nozzle ring integrated into the turbocharger case and located between the turbine and the bearing.2. The apparatus of claim 1 , wherein the turbocharger case is a three-dimensional (3D) printed structure without any joints or seams claim 1 , the turbocharger case abutting a compressor case that houses a compressor of the turbocharger.3. The apparatus of claim 2 , wherein the turbocharger case is adapted to receive a shaft that couples the turbine to the compressor claim 2 , and the bearing is positioned adjacent to the shaft.4. The apparatus of claim 3 , wherein the turbocharger case has an inner surface that defines a cooling core claim 3 , and thereby to facilitate a cooling fluid flowing through the cooling core to cool an interface between the turbine and the bearing.5. The apparatus of claim 4 , wherein the cooling core is defined at least in part by a hollow passage and includes an inlet tube claim 4 , an outlet tube claim 4 , and a curved or helical portion that approximately encircles at least a portion of the shaft.6. The apparatus of claim 5 , wherein the curved or helical portion of the cooling core includes at least one coil claim 5 , wherein the at least one ...

FAN AND BEARING THEREOF

A bearing structure includes a non-metallic column-shaped main body having a through hole, an inner wall surrounding the through hole and an outer wall surrounding the inner wall. The outer wall has at least two protruding blocks extending outward and at least one groove, wherein the groove is arranged between the two neighboring protruding blocks. A fan includes a housing a stator winding, a bearing structure and a rotation piece. The housing has a base and an accommodating space. The stator winding is disposed in the accommodating space and surrounding the base. The bearing structure is disposed in the base. The rotation piece is disposed in the accommodating space, and has a rotation case, an axial shaft connected to the rotation case and a plurality of blades each connected to the rotation case. 1. A bearing structure comprising:a non-metallic column-shaped main body, having a through hole, an inner wall surrounding the through hole and an outer wall surrounding the inner wall, wherein the outer wall has at least two protruding blocks extending outward and at least one groove, and the grove is arranged between the two neighboring protruding blocks.2. The bearing structure according to claim 1 , wherein each of the two ends of each one of the protruding blocks has a first slanted guiding face.3. The bearing structure according to claim 1 , wherein each of the two sides of each one of the protruding blocks has a second slanted guiding face.4. A bearing structure comprisinga non-metallic column-shaped main body, having a through hole, an inner wall surround the through hole and an outer wall surrounding the inner wall, wherein one end of the outer wall proximal to the through hole has at least two first protruding blocks extending outward, and at least one first groove, and the other end of the outer wall proximal to the through hole has at least two second protruding blocks extending outward, and at least one second groove, the first groove is arranged between the ...

BLOWER

The blower comprises: a stator being provided in a case; a radial bearing being provided in the case; a rotor shaft being provided in the case and supported by the stator and the radial bearing; a rotor being integrated with the rotor shaft; and an impeller being integrated with the rotor shaft, the impeller sucking a fluid into the case from an axial direction and sending the same in the circumferential direction of the impeller. The impeller is attached to the rotor shaft to make a blade forming surface of the impeller face the rotor in the axial direction. A shaft end of the rotor shaft, which is located on the opposite side of the impeller, is supported by a thrust receiving member. 1. A blower ,comprising:a case;a stator being provided in the case;a radial bearing being provided in the case;a rotor shaft being provided in the case and supported by the stator and the radial bearing;a rotor being integrated with the rotor shaft; andan impeller being integrated with the rotor shaft, the rotating impeller sucking a fluid into the case from an axial direction and sending the same in the circumferential direction of the impeller,wherein the impeller is attached to the rotor shaft to make a blade forming surface of the impeller face the rotor in the axial direction, anda shaft end of the rotor shaft, which is located on the opposite side of the impeller, is supported by a thrust receiving member.2. The blower according to claim 1 ,wherein the fluid is sucked into the case from the motor side and sent in the circumferential direction of the rotating impeller.3. The blower according to claim 1 ,wherein the radial bearing does not support the rotor shaft in the thrust direction.4. The blower according to claim 1 ,wherein the radial bearing is a slide bearing. This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. P2012-232632, filed on Oct. 22 2012, and the entire contents of which are incorporated herein by ...

DYNAMIC PRESSURE BEARING APPARATUS AND FAN

A dynamic pressure bearing apparatus includes a bearing portion; a shaft; a substantially annular bushing; a radial dynamic pressure bearing portion; and a seal gap. A minute horizontal gap extending radially is defined between an upper surface of the bearing portion and a lower surface of the bushing. The seal gap is arranged to be in communication with an exterior space through the horizontal gap. 1. A dynamic pressure bearing apparatus comprising:a bearing portion;a shaft inserted in the bearing portion, and arranged to rotate about a central axis relative to the bearing portion, an outer circumferential surface of the shaft including an attachment surface to which an impeller is to be attached directly or through one or more members;a radial dynamic pressure bearing portion defined by an inner circumferential surface of the bearing portion, the outer circumferential surface of the shaft, and a portion of a lubricating oil which exists in a radial gap defined between the inner circumferential surface of the bearing portion and the outer circumferential surface of the shaft, and arranged to generate a fluid dynamic pressure in the portion of the lubricating oil;a seal gap defined by the inner circumferential surface of the bearing portion and the outer circumferential surface of the shaft on an upper side of the radial dynamic pressure bearing portion, the seal gap including a seal portion having a surface of the lubricating oil defined therein; andan annular member arranged in an annular shape, and fixed to an upper portion of the bearing portion; whereina minute vertical gap extending in an axial direction is defined between the outer circumferential surface of the shaft and an inner circumferential surface of the annular member;a minimum radial width of the vertical gap is arranged to be smaller than a maximum radial width of an opening of the seal gap; andthe seal gap is arranged to be in communication with an exterior space through the vertical gap.2. The ...

HEAT DISSIPATION MODULE

A heat dissipation module is provided, including a frame, a base, and a fan. The frame has a depressed portion at an inner edge thereof. The base is connected to the frame and has a bottom surface. The fan is movably disposed on the base and has a plurality of blades. The end of an upper edge of the blades has a first height with respect to the bottom surface. The depressed portion has a second height with respect to the bottom surface, wherein the first height is less than the second height. 1. A heat dissipation module , comprising:a frame, having an outward expansion portion at an inner edge of the frame and adjacent to an air inlet of the heat dissipation module, wherein the outward expansion portion forms a depressed structure and has a curved surface or a sloping surface at the inner edge;a base, connected to the frame and having a bottom surface; anda fan, movably disposed on the base and rotatable with respect to the frame, wherein the fan has a plurality of blades, the end of an upper edge of each of the blades has a first height with respect to the bottom surface, and the outward expansion portion has a second height with respect to the bottom surface, wherein the first height is less than the second height.2. The heat dissipation module as claimed in claim 1 , wherein the end of the upper edge of each of the blades forms a curved structure.3. The heat dissipation module as claimed in claim 1 , wherein the upper edges of the blades are parallel to the bottom surface.4. The heat dissipation module as claimed in claim 1 , wherein the frame has a plurality of stationary vanes disposed on an air outlet of the frame and connected to the base claim 1 , a first angle is formed between the upper edges of the stationary vanes and the bottom surface claim 1 , and a second angle is formed between the lower edges of the stationary vanes and the bottom surface claim 1 , wherein the first angle and the second angle are acute angles.5. The heat dissipation module as ...

Turbocharger Air Bearing

An air bearing assembly includes a split bearing with a first portion and a second portion configured to join and form a female tapered section with distal ends of a larger diameter than a joining central portion. A shaft with a male section including distal ends of a larger diameter than a central portion mates with the female tapered section formed by the joined split bearing. In order to provide adequate lubrication, support, and cooling, one or more an passages in the split bearing fluidly communicates a supply of pressurized air to the shaft. The air pressure provides a cushion of air for the shaft to float on during operation. 1. A turbocharger bearing assembly comprising: a first half portion;', 'a second half portion; and', 'a hollow female taper section formed by joining the first and second portions;, 'a cylindrical split bearing, comprisinga tapered shaft having a central portion accommodated within the hollow female taper section such that the cylindrical split bearing is located on the central portion of the tapered shaft; and whereinan air inlet delivers and maintains a compressed air at a predetermined pressure such that the tapered shaft rides on an air cushion when in operation.2. The turbocharger bearing assembly of claim 1 , wherein a pair of distal ends of the cylindrical split bearing have a diameter greater than that of a central portion of the cylindrical split bearing.3. The turbocharger bearing assembly of claim 1 , wherein a pair of distal ends of the tapered section of the tapered shaft have a greater diameter than the central portion.4. The turbocharger bearing assembly of claim 1 , wherein the cylindrical split bearing contains at least one air passage configured to fluidly communicate pressurized air from the first portion of the split bearing to the second portion of the split bearing.5. The turbocharger bearing assembly of claim 4 , wherein the at least one air passage surrounds the tapered section of the tapered shaft.6. The ...

DEBRIS RESISTANT THRUST BEARING ASSEMBLY FOR HIGH SPEED HYDRAULIC CENTRIFUGAL TURBINES AND PUMPS

A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided. 141-. (canceled)42. A method of manufacturing a rotating assembly configured for use in turbines and pumps , the method comprising:arranging a disk in a recess of a shroud; andsecuring the disk in the shroud with a radial force between the shroud and the disk caused by thermal compression of the disk by the shroud.43. The manufacturing method of claim 42 , comprising claim 42 , before the arranging operation claim 42 , heating the shroud to a temperature exceeding 150 degrees Celsius.44. The manufacturing method of claim 43 , wherein the disk is not heated prior to arranging the disk in the recess.45. The manufacturing method of claim 43 , wherein:the disk is heated prior to arranging the disk in the recess; andthe radial force is generated by a thermal expansion differential between the shroud and the disk.46. The manufacturing method of claim 45 , wherein the thermal compression is reversible by heating the combination of the disk and the shroud.47. The manufacturing method of claim 42 , comprising:before the arranging operation, cooling the disk;wherein the thermal compression is accomplished by allowing the assembly to warm to room temperature.48. A bearing assembly configured for use in turbines and pumps ...

BEARING STRUCTURE AND ELECTRIC COMPRESSOR

A bearing structure of the present disclosure includes a rotation shaft, a bearing that is attached in a housing to support the rotation shaft with respect to the housing and includes an inner race through which the rotation shaft is inserted and an outer race which includes an annular groove portion formed on an outer peripheral surface facing an inner wall surface of the housing, and an O-ring which is disposed on the groove portion of the outer race of the bearing, protrudes outward in a radial direction in relation to the outer peripheral surface, and comes into contact with the inner wall surface of the housing. A clearance is formed between the inner wall surface of the housing and the outer peripheral surface of the bearing. The clearance is larger than a radial displacement amount of the O-ring. 13.-. (canceled)4. A bearing structure for supporting a rotation shaft of a rotation body accommodated in a housing with respect to the housing , comprising:the rotation shaft;a bearing that is attached in the housing to support the rotation shaft with respect to the housing and includes an inner race through which the rotation shaft is inserted and an outer race which includes an annular groove portion formed on an outer peripheral surface facing an inner wall surface of the housing; andan O-ring which is disposed on the groove portion of the outer race of the bearing, protrudes outward in a radial direction in relation to the outer peripheral surface, and comes into contact with the inner wall surface of the housing,wherein a clearance is formed between the inner wall surface of the housing and the outer peripheral surface of the bearing and the clearance is larger than a radial displacement amount of the O-ring.5. The bearing structure according to claim 4 ,wherein the inner wall surface of the housing, the bearing, and the O-ring are configured such that a frictional force between the inner wall surface of the housing and the O-ring becomes larger than a ...

RADIAL COMPRESSOR HAVING IRIS DIAPHRAGM MECHANISM

A radial compressor having a specially designed iris diaphragm mechanism is described. This mechanism includes only a single (main) blade that is driven directly by an actuating element, while the other blades are driven by the respective preceding blade via the movement of the main blade. This results in a particularly simple embodiment of the iris diaphragm mechanism. A blade for an iris diaphragm mechanism of this type and a charging device having a radial compressor of this type are furthermore described. 1. A radial compressor for a charging device of an internal combustion engine , comprising:a compressor arranged in a compressor housing,a fresh air feed duct for guiding a fresh air mass flow to the compressor wheel, andan iris diaphragm mechanism, which is arranged upstream of the compressor wheel in the fresh air feed duct and has a multiplicity of blades for opening and closing an iris orifice in order to variably set a flow cross section for the fresh air mass flow,wherein the multiplicity of the blades has a main blade which is actuated for adjustment by an actuating element, and blades guided for adjustment by the main blade, andwherein all the blades are rotatably mounted on the compressor housing or on some other fixed component and all the blades have a guide slot in which a guide element of the respectively adjacent blade engages for adjustment of the following blade.2. The radial compressor as claimed in claim 1 , wherein the main blade has a main aperture claim 1 , with which an actuating pin that acts linearly or in a rotary manner interacts as the actuating element.3. The radial compressor as claimed in claim 1 , wherein the guide element is a journal that engages in the guide slot of the following blade and is movable therein.4. The radial compressor as claimed in claim 1 , wherein all the blades have a bearing journal rotatably mounted on the compressor housing or on some other fixed component.5. The radial compressor as claimed in claim 1 , ...

MOTOR BEARING ARRANGEMENT FOR A MOTOR, IN PARTICULAR OF A FAN OF A VEHICLE AIR-CONDITIONING UNIT

A motor bearing arrangement for a motor () of a fan () of a vehicle air-conditioning unit has a frame (), a support () which partially overlaps the frame () at least in a connecting region, and multiple damping elements () which are provided between the frame () and the support () in the connecting region, wherein the support () is held on the frame () by means of the damping elements (). 1. A motor bearing arrangement for a fan motor of a vehicle air-conditioning unit , comprising:a frame, having a support which partially overlaps the frame at least in a connecting region; andmultiple damping elements which are provided between the frame and the support in the connecting region, wherein the support is held on the frame by the damping elements.2. The motor bearing arrangement according to claim 1 , wherein the support is of cylindrical design claim 1 , wherein the frame surrounds the circumference of the cross section of the support and the damping elements the circumference of the support spaced apart from one another in are arranged along so as to be the circumferential direction.3. The motor bearing arrangement according to claim 1 , characterized in that the support is of substantially circular cylindrical form.4. The motor bearing arrangement according to claim 1 , wherein the damping elements are arranged point-symmetrically claim 1 , about an axis through or about the common centre of gravity.5. The motor hearing arrangement according to claim 4 , wherein a motor with a motor shaft is arranged on the support claim 4 , wherein the motor shaft runs through the common centre of gravity of the damping elements claim 4 , and constitutes the axis of symmetry of the damping elements.6. The motor bearing arrangement according to claim 1 , wherein projections extend outward from the support and flange sections extend inward from the frame claim 1 , which flange sections overlap the projections in an axial direction claim 1 , wherein the damping elements are provided ...

TURBOCHARGER

There is provided a turbocharger which can reduce whirl vibration. 1. A turbocharger comprising:a shaft connecting a turbine and a compressor;a bearing housing having a bearing portion turnably supporting the shaft; anda sliding bearing interposed between the shaft and the bearing portion,wherein the sliding bearing is disposed to be directly opposed to each of the shaft and the bearing portion,wherein the bearing portion is formed of an aluminum-based material,wherein the shaft is formed of a steel material, andwherein the sliding bearing is formed of a copper-based material.2. The turbocharger according to claim 1 ,wherein the bearing housing is divided into a turbine-side housing disposed at a turbine side and a compressor-side housing disposed at a compressor side,wherein the turbine-side housing is formed of stainless steel, andwherein the bearing portion is formed in the compressor-side housing.3. The turbocharger according to claim 2 , further comprisinga metal gasket interposed between the turbine-side housing and the compressor-side housing. The present invention relates to a technique of a turbocharger provided in an internal combustion engine.Conventionally, there has been publicly known a technique of a turbocharger provided in an internal combustion engine. Such a technique of a turbocharger is disclosed, for example, in Japanese Patent Application Laid-Open No. H9-310620.The turbocharger rotatably supports a shaft, by a bearing housing, connecting a turbine driven by exhaust gas and a compressor for compressing intake air. Further, the turbocharger includes a sliding bearing interposed between the bearing housing and the shaft, and is configured such that the shaft is rotated smoothly.However, in the case where the sliding bearing is used in a portion rotating at high speed like the shaft of the turbocharger, since clearances between the bearing housing and the sliding bearing and between the sliding bearing and the shaft are narrow, whirl vibration ...

ROTATING DEVICE

A rotating device includes a retained assembly including a spherical retained member with a spherical encircled face, and an encircling member that includes an annular end face which encircles the spherical retained member and which extends outwardly in a radial direction, a retainer assembly including a retainer member which includes an encircling face encircling the encircled face and which retains thereinside a part of the spherical retained member, and a facing member that faces the encircling member in an axial direction, the retainer assembly supporting the retained assembly in a freely and relatively rotatable manner, and forming a fluid dynamic bearing mechanism, and a thrust dynamic pressure generating groove formed in at least either one of a surface of the encircling member and a surface of the facing member, which surfaces face with each other in the axial direction. 1. A rotating device comprising:a retained assembly including a spherical retained member with a spherical encircled face, and a first encircling member that includes an annular end face which encircles the spherical retained member and which extends outwardly in a radial direction;a retainer assembly including a retainer member which includes an encircling face encircling the encircled face and which retains thereinside a part of the spherical retained member, and a facing member that faces the first encircling member in an axial direction, the retainer assembly supporting the retained assembly in a freely and relatively rotatable manner, and forming a fluid dynamic bearing mechanism; anda first thrust dynamic pressure generating groove formed in at least either one of a surface of the first encircling member and a surface of the facing member, which surfaces face with each other in the axial direction.2. The rotating device according to claim 1 , wherein the spherical retained member includes apart overlapping an area of the first encircling member in the axial direction.3. The rotating ...

MOTOR COOLING SYSTEM MANIFOLD

A cooling system for a motor-compressor and a method for cooling the motor-compressor are provided. The cooling system may include a discharge assembly having a hub portion disposed radially outward of a rotary shaft of the motor-compressor. A plurality of arms may be fluidly coupled with and may extend generally tangential from the hub portion of the discharge assembly. The hub portion may define an annular volume fluidly coupled with the plurality of arms. The cooling system may also include a blower impeller disposed in the annular volume and coupled with the rotary shaft. The blower impeller may be configured to rotate with the rotary shaft and draw a cooling fluid into the discharge assembly. 1. A cooling system for a motor-compressor , comprising:a discharge assembly comprising a hub portion disposed radially outward of a rotary shaft of the motor-compressor and a plurality of arms fluidly coupled with and extending generally tangential from the hub portion, the hub portion defining an annular volume fluidly coupled with the plurality of arms; anda blower impeller disposed in the annular volume and coupled with the rotary shaft, the blower impeller configured to rotate with the rotary shaft and draw a cooling fluid into the discharge assembly.2. The cooling system of wherein the discharge assembly further comprises a discharge housing and a cover plate coupled with one another claim 1 , the cover plate and the discharge housing at least partially defining the annular volume.3. The cooling system of claim 1 , wherein the discharge assembly further comprises a diffuser portion disposed between the blower impeller and the plurality of arms claim 1 , the diffuser portion configured to receive the cooling fluid from the blower impeller and direct the cooling fluid to the plurality of arms.4. The cooling system of claim 1 , further comprising:a return line fluidly coupled with an inlet of the discharge assembly and configured to direct the cooling fluid thereto; ...

ROTARY MACHINE AIR DEFLECTOR

A rotary machine includes a shaft extending through the rotary machine; a bearing positioned around the shaft; and an air deflector mounted on the shaft between the bearing and the shaft, wherein the air deflector has a first cylindrical body portion that is connected to a second cylindrical body portion with a ramp portion. A method for cooling a bearing positioned around a rotating shaft includes providing air to a cavity that surrounds a rotating shaft; deflecting the air towards an inner surface of a bearing that is positioned radially outward of the rotating shaft, wherein the air is deflected with an air deflector that is mounted on the rotating shaft; and flowing the air between an outer surface of the air deflector and the inner surface of the bearing. 1. A rotary machine comprising:a shaft extending through the rotary machine;a bearing positioned around the shaft;an air deflector mounted on the shaft between an inner surface of the bearing and the shaft, wherein the air deflector has a first cylindrical body portion that is connected to a second cylindrical body portion with a ramp portion, and wherein an inner surface of the first cylindrical body portion abuts an outer surface of the shaft; anda cavity around the shaft defined by a housing and the bearing, wherein the air deflector is positioned in the cavity so that cooling air flowing through the cavity will flow between an outer surface of the air deflector and the inner surface of the bearing to cool the bearing.2. The rotary machine of claim 1 , and further comprising at least one of the following:a fan section with a fan blade mounted on the shaft;a compressor section with a compressor nozzle mounted on the shaft; ora turbine section with a turbine nozzle mounted on the shaft.3. The rotary machine of claim 1 , wherein the bearing comprises a foil bearing.4. The rotary machine of claim 3 , wherein the foil bearing comprises:a bearing sleeve forming an outer surface of the foil bearing;a bearing ...

MOUNTING STRUCTURE AND COOLING FAN

A mounting structure for mounting a first member and a second member on each other forming a device such as a cooling fan or the like. The mounting structure is equipped with a rubber joining member provided between the first member and the second member, having a curing property and joining the first member and the second member, and a first metal member provided on the first member on a side opposite to the joining member and having an elastic force restricting the relative movement of the first member to the second member. 1. A mounting structure for mounting a first member and a second member on each other , comprising:a rubber joining member provided between the first member and the second member, having a curing property, and joining the first member and the second member; anda first metal member provided on the first member on a side opposite to the joining member and having an elastic force to restrict relative movement of the first member with respect to the second member.2. The mounting structure according to claim 1 , wherein:the second member is provided with a support member supporting the first metal member; andthe first metal member is fitted in a groove formed on the support member.3. The mounting structure according to claim 1 , further comprising:a second metal member provided on the second member on a side opposite to the joining member and having an elastic force to restrict relative movement of the second member with respect to the first member.4. The mounting structure according to claim 3 , wherein:the second member is provided with a first support member supporting the first metal member;the first member is provided with a second support member supporting the second metal member;the first metal member is fitted in a groove formed on the first support member; andthe second metal member fitted in a groove formed on the second support member.5. The mounting structure according to claim 3 , further comprising:a penetrating member penetrating ...

SYSTEM AND METHOD FOR SIDESTREAM MIXING

Systems and methods are provided for sidestream mixing. The system may include a first junction formed from a plurality of conduits. The plurality of conduits may include a first conduit fluidly coupled to a compressor, the first conduit forming a first conduit diameter and configured to flow therethrough a first process fluid stream of a plurality of process fluid streams. The plurality of conduits may also include a second conduit fluidly coupled to the first conduit and the compressor, and configured to flow therethrough a second process fluid stream of the plurality of process fluid streams. The first junction may be disposed a first distance at least three times the first conduit diameter upstream of the compressor, such that the first process fluid stream and the second process fluid stream are mixed and form a first combined process fluid stream prior to being fed into and pressurized in the compressor. 1. A system for mixing and pressurizing a plurality of process fluid streams , comprising:at least one driver comprising a drive shaft, the at least one driver configured to provide the drive shaft with rotational energy;at least one compressor comprising a rotary shaft, the rotary shaft being operatively coupled to the drive shaft and configured such that the rotational energy from the drive shaft is transmitted to the rotary shaft; and a first conduit fluidly coupled to the at least one compressor, the first conduit forming a first conduit diameter and configured to flow therethrough a first process fluid stream of the plurality of process fluid streams; and', 'a second conduit fluidly coupled to the first conduit and the at least one compressor, the second conduit configured to flow therethrough a second process fluid stream of the plurality of process fluid streams,, 'a first junction formed from a first plurality of conduits comprisingwherein the first junction is disposed a first distance at least three times the first conduit diameter upstream of the at ...

Centrifugal fan frame body structure

A centrifugal fan frame body structure includes a lower case body and a cover body. The lower case body has a bottom section and an outer wall section. The outer wall section is formed with a wind outlet. The cover body and the lower case body are correspondingly mated with each other to form a space. In the space, the lower case body and the cover body define therebetween a first height. The lower case body and the cover body define therebetween a second height at the wind outlet. The second height is larger than the first height. The height of the wind outlet is enlarged, whereby the wind outlet will not be blocked by the cooperative heat dissipation component (module) so that the flow field efficiency is enhanced and the noise is lowered.

BEARING HOUSING

A number of variations may include a product that may be usable with a turbocharger system and may include a housing that may define a lubrication bore. A bearing assembly may be positioned in the housing. A shaft may extend through, and may be supported by, the bearing assembly. A turbine wheel may be connected to the shaft. An end cap may be connected between the housing and the turbine wheel. The end cap may define a cooling chamber. A spray head may provide an opening between the lubrication bore and the cooling chamber. 1. A product usable with a turbocharger system comprising a housing defining a lubrication bore , a bearing assembly positioned in the housing , a shaft extending in an axial direction through and supported by the bearing assembly , a turbine wheel connected to the shaft , an end cap disposed between the housing and the turbine wheel , the end cap defining a cooling chamber as an annular depression in the end cap , and a spray head providing an opening between the lubrication bore and the cooling chamber the end cap having a radial wall that extends radially outward relative to the shaft , the spray head formed as a cylindrical projection extending in the axial direction from the radial wall within the annular depression and the cylindrical projection extending from the end cap completely across the cooling chamber and engaging the housing around the lubrication bore.2. The product according to wherein the end cap includes an inner wall extending in the axial direction along the shaft and an outer wall extending in the axial direction to a projecting flange that engages the housing claim 1 , wherein the radial wall extends from the inner wall to the outer wall claim 1 , and the end cap includes an integral heat shield extending from the outer wall opposite the flange and extending in a radial direction toward the shaft to a terminal end that forms an opening through which the inner wall extends.3. The product according to wherein the lubrication ...

COOLING FAN HAVING BENT BEARING HOUSING FOR RETAINING LUBRICANT

A cooling fan includes a stator, a base supporting the stator, and a rotor positioned to rotate with respect to the stator. The base includes a bearing housing and a central hole defined in the bearing housing. The rotor includes a hub and a shaft extending from the hub. An end of the shaft is fixed in the hub, and another end of the shaft is extending in the central hole defined in the bearing housing. The bearing housing includes a main cylindrical portion and a protruding portion bent radially inward from a top end of the main portion, and the protruding portion thus serves as a lubricant retaining portion of the bearing housing. 1. A cooling fan comprising:a stator;a rotor positioned to rotate with respect to the stator, the rotor comprising a hub and a shaft extending from the hub, an end of the shaft being fixed in the hub; anda base supporting the stator, the base comprising a bearing housing and a central hole defined in the bearing housing, another end of the shaft extending in the central hole of the bearing housing, wherein the bearing housing comprises a main cylindrical portion and a protruding portion bent radially inward from a top end of the main portion, and the protruding portion thus serves as a lubricant retaining portion of the bearing housing.2. The cooling fan of claim 1 , wherein the lubricant retaining portion is annular claim 1 , and defines a through hole in the center thereof.3. The cooling fan of claim 1 , wherein the shaft defines an annular slot in a circumferential wall thereof claim 1 , at a position near a top end of the shaft close to the hub.4. The cooling fan of claim 3 , wherein the slot is located in the central hole claim 3 , and is completely below the lubricant retaining portion.5. The cooling fan of claim 3 , wherein the lubricant retaining portion extends into the slot.6. The cooling fan of claim 3 , wherein an upper surface of the lubricant retaining portion is near and spaced from the hub claim 3 , to define a gap ...

TURBOCHARGER WITH JOURNAL BEARING

A turbocharger assembly can include a housing with a through bore and an axial face disposed in the through bore; a locating plate with a keyed opening attached to the housing; and a journal bearing disposed in the through bore where the journal bearing includes a keyed compressor end and an enlarged outer portion defined between two axial faces by an outer diameter and an axial length where the axial face disposed in the through bore of the housing, the locating plate, and the two axial faces of the journal bearing axially locate the journal bearing in the through bore and where the keyed opening of the locating plate and the keyed compressor end of the journal bearing azimuthally locate the journal bearing in the through bore. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed. 1. A turbocharger assembly comprising:a housing that comprises a through bore extending from a compressor side to a turbine side of the housing and an axial face disposed in the through bore between a through bore surface at a first diameter and a through bore surface at a second diameter;a locating plate attached to the compressor side of the housing wherein the locating plate comprises a keyed opening; anda journal bearing disposed in the through bore of the housing wherein the journal bearing comprises a keyed compressor end and an enlarged outer portion defined between two axial faces by an outer diameter and an axial length wherein an axial length between the keyed compressor end and a turbine end of the journal bearing exceeds the axial length of the enlarged outer portion,wherein the axial face disposed in the through bore of the housing, the locating plate, and the two axial faces of the journal bearing axially locate the journal bearing in the through bore of the housing, andwherein the keyed opening of the locating plate and the keyed compressor end of the journal bearing azimuthally locate the journal bearing in the through bore of the ...

TURBOCHARGER

A turbocharger, has a turbine for expanding a first medium and a compressor for compressing a second medium. The turbine includes a turbine housing and a turbine rotor. The compressor includes a compressor housing and a compressor rotor coupled to the turbine rotor via a shaft. A bearing housing is arranged between the compressor and turbine housings in which the shaft is mounted. The turbine and bearing housings are connected via a fastening device mounted on a flange of the turbine housing with a first section and a second section that covers a flange of the bearing housing at least in sections. The fastening device is contoured curved on a surface of the second section facing the flange of the bearing housing. 1. A turbocharger , comprising:a shaft a turbine housing; and', 'a turbine rotor;, 'a turbine configured to expand a first medium, comprising a compressor housing; and', 'a compressor rotor coupled to the turbine rotor via the shaft;, 'a compressor configured to compress a second medium utilizing energy extracted in the turbine during an expansion of the first medium, comprisinga bearing housing arranged between and connected to the turbine housing and the compressor housing, and in which the shaft is mounted; anda fastening device with a first section and a second section the fastening device configured to connect the turbine housing and the bearing housing such that the fastening device is mounted on a flange of the turbine housing with the first section and the second section covers a flange of the bearing housing at least in sections,wherein the fastening device is contoured curved on a surface of the second section facing the flange of the bearing housing.2. The turbocharger according to claim 1 , wherein a curvature radius of the curved surface of the second section of the fastening device facing the flange of the bearing housing corresponds to between 5 times and 20 times an axial thickness of the fastening device in a region of at least one of the ...

ELECTRIC BLOWER AND ELECTRIC VACUUM CLEANER EQUIPPED WITH SAME

An electric blower includes: a rotor assembly; and a housing accommodating the rotor assembly, and having an intake port and a discharge port. The rotor assembly includes: a shaft; an impeller mounted on the shaft, and generating a negative pressure at the intake port by rotation; a rotor core mounted on the shaft; and a pair of bearings having an inner peripheral side mounted on an outer periphery of the shaft, and having an outer peripheral side fixedly mounted on the housing. The pair of bearings are arranged between the impeller and the rotor core. The housing includes a frame formed of an integral body of a bearing holding portion and a stator holding portion, the bearing holding portion holding the pair of bearings in a state where outer peripheral surfaces of the bearings are in contact with the bearing holding portion, and the stator holding portion holding a stator which drives the rotor core. 1. An electric blower comprising:a rotor assembly; anda housing accommodating the rotor assembly, and having an intake port and a discharge port, whereinthe rotor assembly includes:a shaft;an impeller mounted on the shaft, and generating a negative pressure at the intake port by rotation;a rotor core mounted on the shaft; anda pair of bearings having an inner peripheral side mounted on an outer periphery of the shaft, and having an outer peripheral side fixedly mounted on the housing,the pair of bearings are arranged between the impeller and the rotor core,the housing includes a frame formed of an integral body of a bearing holding portion and a stator holding portion, the bearing holding portion holding the pair of bearings in a state where outer peripheral surfaces of the bearings are in contact with the bearing holding portion, and the stator holding portion holding a stator which drives the rotor core, andthe bearing holding portion projects in an axial direction of the bearing holding portion toward the stator holding portion side.2. (canceled)3. The electric ...

COOLING APPARATUS

A cooling apparatus includes an impeller, a motor, a base portion, and a motor circuit board. The impeller includes a plurality of blades and a blade support portion. Of the plurality of blades, at least one pair of circumferentially adjacent blades are arranged to have a channel defined therebetween, the channel extending from axially upper edges to axially lower edges of the blades, and being arranged to be open toward the upper surface of the base portion. The base portion includes a heat source contact portion with which a heat source is to be in contact. At least one of the blades includes a blade edge opposed portion having an axially lower edge arranged opposite to the upper surface of the base portion. An outermost edge portion of the motor circuit board is arranged radially inward of a radially inner end portion of the blade edge opposed portion. 1. A cooling apparatus comprising:an impeller arranged to rotate about a central axis extending in a vertical direction, and including a plurality of blades arranged in a circumferential direction and a blade support portion arranged to support the plurality of blades;a motor arranged to rotate the impeller;a base portion arranged to support the motor; anda motor circuit board arranged on an upper surface of the base portion to supply a drive current to coils of the motor; whereinof the plurality of blades, at least one pair of circumferentially adjacent blades are arranged to have a channel defined therebetween, the channel extending from axially upper edges to axially lower edges of the blades, and being arranged to be open toward the upper surface of the base portion;the base portion includes, in a lower surface thereof, a heat source contact portion with which a heat source is to be in contact;at least one of the blades includes a blade edge opposed portion having an axially lower edge arranged opposite to the upper surface of the base portion; andan outermost edge portion of the motor circuit board is arranged ...

FLEXURE PIVOT TILTING PAD JOURNAL BEARING ASSEMBLY

A flexure pivot tilting pad () (FPTP) journal bearing () is used to support a rotating assembly of a turbocharger (). The FPTP journal bearing () includes a cylindrical outer ring () and flexure pivot tilting pads () disposed within the outer ring (). The flexure pivot tilting pads () are formed separately from the outer ring () and secured thereto during assembly. 13032132. A journal bearing ( , , ) comprising{'b': 60', '160, 'claim-text': [{'b': '61', 'a first end (),'}, {'b': '62', 'a second end (),'}, {'b': 63', '61', '62, 'a longitudinal axis () that extends through the first end () and the second end (),'}, {'b': '66', 'a radially outward-facing bearing surface (), and'}, {'b': 68', '66', '68', '72', '172, 'an inner surface () opposed to the radially outward-facing bearing surface (), the inner surface () including an axially extending groove (, ), and'}], 'a cylindrical outer ring (, ) that includes'}{'b': 80', '180, 'claim-text': [{'b': 81', '82, 'a bearing member () that is elongated in a circumferential direction and provides a radially inward facing bearing surface (),'}, {'b': 90', '190, 'an anchor portion (, ), and'}, {'b': 88', '81', '90', '190', '90', '190', '72', '172', '80', '180', '60', '160', '81', '88', '68', '60', '160, 'a web () that connects the bearing member () to the anchor portion (, ), wherein the anchor portion (, ) is disposed in the groove (, ) in such a way that the flexure pivot tilting pad (, ) is secured to the outer ring (, ), and the bearing member () is pivotable about the web () relative to the inner surface () of the outer ring (, ).'}], 'a flexure pivot tilting pad (, ) that includes'}230329072. The journal bearing ( claim 1 , ) of claim 1 , wherein the anchor portion () is press fit within the groove ().33032726162. The journal bearing ( claim 1 , ) of claim 1 , wherein the groove () is blind relative to the outer ring first end () and the outer ring second end ().430329072. The journal bearing ( claim 1 , ) of claim 1 , ...

COMPRESSOR IMPELLERS

An impeller includes a hub having a direction of rotation, a plurality of impeller blades extending from the hub, each blade having a downstream end, an upstream end, a leading surface facing the direction of rotation of the hub, and a trailing surface facing opposite to the direction of rotation of the hub. The impeller further includes a secondary flow reducer extending towards the downstream end and the upstream end of the at least one of the plurality of impeller blades, the secondary flow reducer defining first and second surfaces intersecting one of the leading surface and the trailing surface of the at least one of the plurality of impeller blades as well as a third surface between the first and second surfaces. 1. An impeller comprising:a hub having a direction of rotation;a plurality of impeller blades extending from said hub, each said blade having a downstream end, an upstream end, a leading surface facing said direction of rotation of said hub, and a trailing surface facing opposite to said direction of rotation of said hub; anda secondary flow reducer extending towards said downstream end and said upstream end of said at least one of said plurality of impeller blades, said secondary flow reducer defining a first surface and a second surface intersecting one of said leading surface and said trailing surface of said at least one of said plurality of impeller blades and a third surface between said first and second surfaces.2. The impeller of claim 1 , further comprising at least one of the plurality of impeller blades with at least one secondary flow reducer on said leading surface and said trailing surface claim 1 , the flow reducer being designed following an ideal streamline.3. The impeller of claim 2 , wherein said ideal streamline is substantially parallel to lines associated with the endwalls of the at least one of the impeller blades.4. The impeller of claim 1 , wherein said first surface and said second surface intersect said trailing surface of ...

Groove-type dynamic pressure gas radial bearing

A groove-type dynamic pressure gas radial bearing, comprises a bearing outer sleeve and a bearing inner sleeve, the outer circumferential face and the two end faces of the bearing inner sleeve are respectively provided with regular groove-type patterns, and the groove-type pattern in one end face is in mirror symmetry with the groove-type pattern in the other end face, and the axial contour lines of the groove-type patterns in the outer circumferential face and the radial contour lines of the groove-type patterns in the left and right end faces are in one-to-one correspondence and are connected with each other. The groove-type dynamic pressure gas radial bearing provided by the invention can achieve a load capacity of 1-3 kg and a limit rotating speed of 200,000 rpm to 450,000 rpm, it can realize the application of groove-type dynamic pressure gas radial bearings in ultra high-speed areas. 1. A groove-type dynamic pressure gas radial bearing , comprises a bearing outer sleeve and a bearing inner sleeve , the outer circumferential face and the two end faces of the bearing inner sleeve are respectively provided with regular groove-type patterns , and the groove-type pattern in one end face is in mirror symmetry with the groove-type pattern in the other end face , and the axial contour lines of the groove-type patterns in the outer circumferential face and the radial contour lines of the groove-type patterns in the left and right end faces are in one-to-one correspondence and are connected with each other.2. The groove-type dynamic pressure gas radial bearing according to claim 1 , the axial high-position lines of the groove-type patterns in the outer circumferential face of the bearing inner sleeve correspond to the radial high-position lines of the groove-type patterns in the left and right end faces claim 1 , and are connected with each other in front of the circumferential chamfer in the end face; and the axial middle-position lines of the groove-type patterns in ...

VACUUM PUMP

A vibration control mechanism is interposed between a ball bearing and a support section of a base The vibration control mechanism is provided with a plurality of laminated sliding members and an elastic body The vibration control mechanism is provided with the plurality of sliding members and therefore has a plurality of sliding surfaces. As a result, it is possible to enhance a vibration control effect. 1. A vacuum pump whose rotor including an exhaust function section is supported by a ball bearing and is rotated at high speed by a motor to perform evacuation comprising:a shaft provided in the rotor;a ball bearing attached to the shaft;a support member arranged above the ball bearing in an axial direction of the shaft; anda vibration control mechanism interposed between the support member and the ball bearing, whereinthe vibration control mechanism includes:an elastic body interposed between the support member and the ball bearing, anda plurality of laminated sliding members interposed between the elastic body and the ball bearing.2. The vacuum pump according to claim 1 , wherein the sliding members include at least two kinds of sliding members surfaces of which are formed of different materials.3. The vacuum pump according to claim 2 , wherein at least a surface of one of the two kinds of sliding members is formed of a metal material and at least a surface of the other sliding member is formed of a polymer material.4. The vacuum pump according to claim 3 , wherein one of the sliding members is formed of sintered metal powder and the sintered metal powder is impregnated with lubrication oil.5. The vacuum pump according to claim 3 , wherein the polymer material is any one of fluororesin claim 3 , polyimide claim 3 , PEEK claim 3 , and phenol resin.6. The vacuum pump according to claim 3 , wherein the polymer material is impregnated with lubrication oil.7. The vacuum pump according to claim 3 , wherein a plurality of sliding members at least surfaces of which are ...

GAS-DYNAMIC AIR BEARING

A gas-dynamic air bearing for radially mounting a shaft may include a plurality of bearing segments arranged in a recess of a housing. The bearing segments may radially enclose the shaft. Each bearing segment may be held with play on the housing via a respective bolt arranged radially to a predetermined bearing axis. Each bearing segment may include an associated stop spring device supported between the housing and the bearing segments. The respective stop spring device may be resilient to stroke movements of the bearing segment effective radially outwardly relative to the bearing axis. The respective bolts may be adjustably screwed to the housing. The bolts may have an end on a segment side that delimits a spring travel of the stop spring device radially inwardly towards the bearing axis and may position the respective bearing segment. 1. A gas-dynamic air bearing for radially mounting a shaft , comprising: a plurality of bearing segments arranged in a recess of a housing , which jointly radially enclose the shaft , wherein each bearing segment is held with play on the housing via a respective bolt is arranged radially to a predetermined bearing axis , and wherein each bearing segment includes an associated stop spring device supported between the housing and the bearing segments , the respective stop spring device resilient to stroke movements of the bearing segment effective radially outwardly relative to the bearing axis , wherein the respective bolts are adjustably screwed to the housing , wherein an end of the bolt on a segment side delimits a spring travel of the stop spring device radially inwardly and positions the respective bearing segment with play in at least one of a circumferential direction and a direction of the bearing axis.2. The air bearing according to claim 1 , wherein the bearing segments between a circumference of the shaft and the respective stop spring device have a predetermined play in a radial direction with respect to the bearing axis ...

RADIAL BLOWER

A radial blower, in particular for a cooling machine, comprising a housing in which a shaft is rotationally mounted, which receives at least one impeller wheel of a compressor at one end, which is secured to the housing, comprising at least one radial bearing and at least one axial bearing via which the shaft is rotationally mounted in the housing, and comprising a motor driven by a rotor and a stator and provided between the first and the second radial bearing, wherein at least one channel having a pressure connection for a pressure medium to be supplied is provided in the housing, which channel feeds into a rotor space formed between the shaft and the housing and extending from the impeller wheel to the radial bearing or axial bearing, which is provided next to the impeller wheel. 1. A radial blower , in particular for a cooling machine , comprising:a housing), in which a shaft is rotatably mounted, which, on one end, receives at least one impeller of a compressor which is fixed on the housing,at least one radial bearing and having at least one axial gas bearing by means of which the shaft is rotatably mounted in the housing, andan engine driven by a rotor and stator), which is provided between the first and the second radial bearing, andwherein in the housing, at least one channel is provided with a pressure port for a pressure medium to be supplied, which opens out into a rotor chamber, which is formed between the shaft and the housing, and extends from the impeller to the radial bearing or axial gas bearing, which is provided adjacently to the impeller.2. The radial blower according to claim 1 , wherein the axial gas bearing is positioned between a radial bearing allocated to the engine and the impeller.3. The radial blower according claim 1 , wherein the channel provided between the impeller) and the axial gas bearing in the housing leads into the rotor chamber in the housing and a gas chamber of the compressor claim 1 , wherein the rotor chamber is connected ...

FAN FRAME BODY WITH BYPASS STRUCTURE AND FAN THEREOF

A fan frame body with bypass structure and a fan thereof. The fan includes a first fan, a second fan and a bypass structure. The second fan has a second frame body correspondingly serially connected with a first frame body of the first fan, whereby a first flow way of the first frame body communicates with a second flow way of the second frame body. The bypass structure is disposed in the first flow way or the second flow way. The bypass structure defines a bypass flow way on a circumference of the first flow way or the second flow way. By means of the bypass structure, without increasing the size of the fan and without increasing the consumed power of the fan, the air volume of the fan can be enhanced. 1. A fan frame body with bypass structure , comprising:a first frame body having a first flow way, one side of the first flow way being formed with a first opening, while the other side of the first flow way being formed with a second opening;a second frame body correspondingly serially connected with the first frame body, the second frame body having a second flow way, one side of the second flow way being formed with a third opening, while the other side of the second flow way being formed with a fourth opening, the third opening being aligned with the second opening, whereby the first flow way communicates with the second flow way; anda bypass structure disposed in the first flow way or the second flow way, the bypass structure defining a bypass flow way on a circumference of the first flow way or the second flow way.2. The fan frame body with bypass structure as claimed in claim 1 , wherein a first base seat and multiple first connection members are disposed at the second opening claim 1 , the first base seat being connected to the first frame body via the first connection members claim 1 , the bypass structure being formed on the first connection members claim 1 , the bypass structure and the first frame body and the first connection members together defining ...

MIDSPAN ACTIVE MAGNETIC BEARING

A compression system may include a compressor having first and second sides separated by a division wall, first and second shafts, and first and second radial bearings. The first and second shafts may be axially connected to each other at respective first ends via a rotor portion of an intermediate radial bearing. The rotor portion may include a plurality of laminations stacked between first and second plates fastened to each other. The first radial bearing may be disposed on a first side of the intermediate radial bearing and may be proximate a second end of the first shaft. The first radial bearing may be configured to support the first shaft. The second radial bearing may be disposed on a second side of the intermediate radial bearing and may be proximate a second end of the second shaft. The second radial bearing may be configured to support the second shaft. 1. A compression system , comprising:a housing;a compressor within the housing, the compressor having a first side and a second side separated by a division wall;a first shaft and a second shaft disposed within the compressor, each of the first shaft and the second shaft having a first end and a second end, and the first shaft and the second shaft being axially connected to each other at the respective first ends and being configured to rotate together;a first radial bearing disposed proximate the second end of the first shaft and configured to support the first shaft;a second radial bearing disposed proximate the second end of the second shaft and configured to support the second shaft; andan intermediate radial bearing disposed at or adjacent the division wall, the intermediate radial bearing being disposed between the first radial bearing and the second radial bearing and proximate the connected first ends of the first shaft and the second shaft.2. The compression system of claim 1 , wherein the division wall surrounds the intermediate radial bearing claim 1 , and the intermediate radial bearing ...

FAN STRUCTURE

A fan structure includes a base, a circuit board, a coil assembly, a fan blade and a bearing assembly. The circuit board is arranged on the base and includes an electronic component disposed thereon. The coil assembly is arranged on the base and electrically connected to the circuit board; the electronic component is arranged at an area outside of another area directly underneath the coil assembly. The internal of the fan blade includes a magnet; a bearing assembly is provided for the fan blade pivotally attached to the base therewith; the magnet is disposed at an external of the coil assembly. Therefore, the electronic component would not occupy the space in the axial direction of the motor in order to reduce the height of the fan blade without affecting air intake; the electronic component is visible from the outer appearance such that the repair of the circuit is facilitated. 1. A fan structure comprising:a basea circuit board arranged on the base and having an electronic component disposed thereon;a coil assembly arranged on the base and electrically connected to the circuit board; the electronic component arranged at an area outside of another area directly underneath the coil assembly;a fan blade having a magnet arranged at an internal thereof; anda bearing assembly provided to allow the fan blade to be pivotally attached to the base therewith; the magnet disposed at an external of the coil assembly.2. The fan structure according to claim 1 , wherein the circuit board is divided into a first portion and a second portion; the first portion is arranged directly underneath the coil assembly; one end of the second portion is connected to an edge of the first portion and another end thereof extends out of the base; the electronic component is disposed on the second portion outside of the base.3. The fan structure according to claim 1 , wherein the circuit board is divided into a first portion and a second portion; the first portion is arranged underneath the coil ...

FAN CASE BUSHING

A bushing including a body portion including a cylinder portion having a bore there through configured to receive a bolt; a flange portion orthogonal and integral to the cylinder portion, the flange portion configured to abut a load bearing surface of a flange; a lip portion orthogonal to and integral to the flange portion proximate the cylinder portion, wherein the lip portion redistributes a flange load. 1. A bushing comprising:a body portion including a cylinder portion having a bore there through configured to receive a bolt;a flange portion orthogonal and integral to said cylinder portion, said flange portion configured to abut a load bearing surface of a flange;a lip portion orthogonal to and integral to said flange portion proximate said cylinder portion, wherein said lip portion redistributes a flange load.2. The bushing according to claim 1 , wherein said bore is configured to align with a centerline of a flange bolt hole.3. The bushing according to claim 2 , wherein said cylinder portion is configured to insert into said flange bolt hole.4. The bushing according to claim 2 , wherein the flange portion comprises a bushing inner face and a bushing outer face opposite thereof claim 2 , said bushing inner face being configured to abut a flange load bearing surface and said outer face configured to abut at least one of a washer claim 2 , and a nut.5. The bushing according to claim 1 , wherein said lip portion comprises a curvilinear shape that matches a fillet formed on said flange.6. The bushing according to claim 1 , wherein said lip portion abuts a portion of said load bearing surface proximate a fillet region of said flange.7. The bushing according to claim 1 , wherein said lip portion further comprises an inner radius and an outer radius opposite said inner radius claim 1 , wherein said outer radius is configured to match a radius of a fillet of said flange.8. A casing flange coupling assembly comprising:a first casing comprising a first flange, said first ...

BEARING BUSHING AND CORRESPONDING CHARGER DEVICE

A bearing bushing for a charging device may include an inner jacket surface including at least two radial depressions. A respective lowest point of the at least two radial depressions may be disposed on a circle having a radius R1. A plurality of plateau surfaces may be disposed circumferentially between the at least two radial depressions and may be offset radially towards an inside of the bearing bushing. The plateau surfaces may be curved and may have a constant radius R2. A ratio between the radius R1 and the radius R2 may correspond to the relationship: R1/R2=1.001 to 1.015. 1. A bearing bushing for a charging device , comprising:an inner jacket surface including at least two radial depressions;the at least two radial depressions having a respective lowest point disposed on a circle defining a first radius R1;a plurality of plateau surfaces disposed circumferentially between the at least two radial depressions, the plurality of plateau surfaces arranged offset radially to an inside and define a curved structure having a second radius R2, wherein the second radius R2 is constant; andwherein a ratio between the first radius R1 and the second radius R2 applies corresponds to the following relationship: R1/R2=1.001 to 1.015.2. The bearing bushing according to claim 1 , wherein the at least two radial depressions are structured to be rounded and identical to one another.3. The bearing bushing according to claim 1 , wherein the at least two radial depressions include three depressions arranged on a circumference of the inner jacket surface and are offset from one another by 120°.4. The bearing bushing according to claim 1 , the at least two radial depressions are distributed evenly across a circumference of the inner jacket surface.5. The bearing bushing according to claim 1 , further comprising a number of oil holes corresponding to a number of the at least two radial depressions claim 1 , wherein each one of the number of oil holes has a radial axis.6. The bearing ...

FAN STRUCTURE

A fan structure includes a fan impeller, a fan seat and a hollow shaft rod. The fan impeller has a circumferential section and a top section. The circumferential section has multiple fan blades. The fan seat has a bearing cup. A light-emitting unit and a photoconductive component are received in the bearing cup. The hollow shaft rod has a first end, a second end and a through hole. The through hole axially passes through the hollow shaft rod between the first and second ends. A first end of the hollow shaft rod is inserted in the top section of the fan impeller. A second end of the hollow shaft rod is inserted in the bearing cup of the fan seat and assembled with the photoconductive component. The fan structure improves the shortcoming of the conventional light-emitting fan that the light can be hardly fully projected. 1. A fan structure comprising:a fan impeller having a circumferential section and a top section, the circumferential section having multiple fan blades;a fan seat having a bearing cup, a light-emitting unit and a photoconductive component being received in the bearing cup; anda hollow shaft rod having a first end, a second end and a through hole, the through hole axially passing through the hollow shaft rod between the first and second ends, a first end of the hollow shaft rod being inserted in the top section of the fan impeller, a second end of the hollow shaft rod being inserted in the bearing cup of the fan seat and assembled with the photoconductive component.2. The fan structure as claimed in claim 1 , wherein the photoconductive component is a lens or a photoconductive strip.3. The fan structure as claimed in claim 1 , wherein the light-emitting unit is a bulb or a light-emitting diode LED.4. The fan structure as claimed in claim 1 , wherein one end of the photoconductive component is inserted in the through hole of the hollow shaft rod.5. The fan structure as claimed in claim 1 , wherein one face of the photoconductive component is mated with ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor () that includes: an auxiliary bearing () which supports a shaft (), which is supported by a magnetic bearing (), when the shaft () is displaced from a reference position; and a stopper () that is provided only for a first auxiliary bearing () among the first auxiliary bearing () and a second auxiliary bearing (), that is fixed to the shaft (), and that restricts a movement of the shaft () in both directions in an axial direction by the stopper () being brought into contact with the first auxiliary bearing (). 1. A centrifugal compressor that includes: a shaft that is rotatably supported by a magnetic bearing; an impeller that is fixed to the shaft; and an auxiliary bearing that supports the shaft when the shaft is displaced from a reference position , the centrifugal compressor comprising:a first auxiliary bearing, as the auxiliary bearing, which is arranged on a side of a first end of the shaft;a second auxiliary bearing, as the auxiliary bearing, which is arranged on a side of a second end of the shaft; anda stopper that is provided only for the first auxiliary bearing among the first auxiliary bearing and the second auxiliary bearing, that is fixed to the shaft, and that restricts a movement of the shaft in both directions in an axial direction of the shaft by the stopper being brought into contact with the first auxiliary bearing.2. The centrifugal compressor according to claim 1 ,wherein the magnetic bearing has an axial magnetic bearing that restricts a movement of the shaft in the axial direction of the shaft, the axial magnetic bearing being arranged at a position closer to the first auxiliary bearing than the second auxiliary bearing in the axial direction of the shaft.3. The centrifugal compressor according to claim 1 , wherein:the impeller has: a low-pressure impeller; and a high-pressure impeller that further compresses gas compressed by the low-pressure impeller; andthe high-pressure impeller is fixed to the first end of the ...

DYNAMIC PRESSURE BEARING APPARATUS AND FAN

A dynamic pressure bearing apparatus includes a bearing portion, a shaft, a radial dynamic pressure bearing portion, and a seal gap. An annular member arranged in an annular shape, fixed to the shaft axially between the seal portion and the attachment surface, and arranged to extend radially outward beyond an opening of the seal gap. A minute horizontal gap extending radially is defined between an upper surface of the bearing portion and a lower surface of the annular member. The seal gap is arranged to be in communication with an exterior space through the horizontal gap. 1. A dynamic pressure bearing apparatus comprising:a bearing portion;a shaft inserted in the bearing portion, andarranged to rotate about a central axis relative to the bearing portion, an outer circumferential surface of the shaft including an attachment surface to which an impeller is to be attached directly or through one or more members;a radial dynamic pressure bearing portion defined by an inner circumferential surface of the bearing portion, the outer circumferential surface of the shaft, and a portion of a lubricating oil which exists in a radial gap defined between the inner circumferential surface of the bearing portion and the outer circumferential surface of the shaft, and arranged to generate a fluid dynamic pressure in the portion of the lubricating oil;a seal gap defined by the inner circumferential surface of the bearing portion and the outer circumferential surface of the shaft on an upper side of the radial dynamic pressure bearing portion, the seal gap including a seal portion having a surface of the lubricating oil defined therein; andan annular member arranged in an annular shape, fixed to the shaft axially between the seal portion and the attachment surface, and arranged to extend radially outward beyond an opening of the seal gap; whereina minute horizontal gap extending radially is defined between an upper surface of the bearing portion and a lower surface of the annular ...

ADJUSTING MECHANISM FOR CENTRIFUGAL COMPRESSORS

An adjusting mechanism, adaptive to a main body of a centrifugal compressor, comprises a diffuser channel width adjusting assembly and a gas bypass assembly. The diffuser channel width adjusting assembly comprises a width adjusting annular plate and a first valve stem. The width adjusting annular plate is movably disposed in a diffuser channel of the main body. The first valve stem is connected to the width adjusting annular plate, and configured for driving the width adjusting annular plate to move to adjust the width of the diffuser channel. The gas bypass assembly comprises a gas bypass valve and a second valve stem. The gas bypass valve is movably disposed in a gas bypass passage of the main body. The second valve stem is connected to the gas bypass valve, and configured for driving the gas bypass valve to move to adjust the opening of the gas bypass port. 1. An adjusting mechanism adaptive to a main body of a centrifugal compressor , the adjusting mechanism comprising: a width adjusting annular plate configured for being movably disposed in a diffuser channel of the main body; and', 'a first valve stem connected to the width adjusting annular plate, the first valve stem configured for driving the width adjusting annular plate to move so as to adjust the width of the diffuser channel; and, 'a diffuser channel width adjusting assembly, comprising a gas bypass valve configured for being movably disposed in a gas bypass passage of the main body; and', 'a second valve stem connected to the gas bypass valve, the second valve stem configured for driving the gas bypass valve to move so as to adjust the opening of a gas bypass port., 'a gas bypass assembly, comprising2. The adjusting mechanism according to claim 1 , further comprising a drive shaft claim 1 , the diffuser channel width adjusting assembly further comprising a first box cam claim 1 , the first box cam disposed on the drive shaft and having a first cam groove claim 1 , a distance between a part of the first ...

FASTENING ASSEMBLY

A fastening assembly having a component flange (), in particular of a turbomachine, having at least one bore () in which a sleeve () is placed that extends through a bolt () which has a head () that is axially secured between a rim () of the bore and a component flange-mounted axial limit stop (). 1. A fastening assembly comprising:a component flange having at least one bore;a sleeve placed in the bore;a bolt extending through the sleeve, the bolt having a head axially secured between a rim of the bore and a component flange-mounted axial limit stop.2. The fastening assembly as recited in wherein the axial limit stop is joined to the component flange in a manner that does not permit non-destructive detachment claim 1 , or is integrally formed therewith claim 1 , or claim 1 , together with a bore-side flange wall defines a groove claim 1 , the head engaging radially in the groove.3. The fastening assembly as recited in wherein an axial width of the groove is smaller than an axial distance between the head and an end face of the bolt facing away from the head.4. The fastening assembly as recited in wherein claim 1 , in at least one rotational position of the bolt claim 1 , an outer contour of the head at least partially covers an outer contour of the axial limit stop.5. The fastening assembly as recited in wherein claim 4 , in every rotational position of the bolt claim 4 , the outer contour of the head at least partially covers the outer contour of the axial limit stop; or in at least one other rotational position of the bolt claim 4 , does not cover outer contour of the axial limit stop.6. The fastening assembly as recited in wherein an end portion of the bolt facing away from the head is joined by frictional engagement claim 1 , in a form-locking manner or in a material-to-material bond to a mating holder.7. The fastening assembly as recited in wherein an end portion of the bolt facing away from the head is bolted to a mating holder.8. The fastening assembly as ...

THRUST BEARINGS FOR CENTRIFUGAL PUMPS

A bearing assembly for a centrifugal pump is configured to accommodate both forward and reverse axial thrust, and to be lubricated by process fluid. A pump incorporating a dual acting bearing assembly that is lubricated by process fluid and that is located between the final two impeller stages of the pump. A desalination system comprises a pump with an inlet for receiving seawater at a first end, an outlet for discharging high pressure seawater at a second end, one or more impellers coupled to a rotatable shaft between the first end and the second end for increasing a pressure of the seawater, and a bearing assembly lubricated by the seawater for absorbing axial thrust in both directions along the shaft. 1. A bearing assembly for a pump having a casing with an inlet port at a first end of the casing for receiving low pressure process fluid and a discharge port at a second end of the casing for discharging high pressure process fluid , a rotatable shaft moveable in an axial direction with respect to the casing , and a plurality of impellers coupled to rotate with the shaft , the bearing assembly comprising:a thrust collar coupled to rotate with the shaft; a plurality of flow ports arranged around a radial periphery of the central cavity, each of the flow ports providing fluid communication between the first side of the bearing housing and the second side of the bearing housing; and,', 'a plurality of first side lubrication ports and second side lubrication ports each having an associated flow port, each first side lubrication port extending from the associated flow port toward central cavity from the first side and each second side lubrication port extending from the associated flow port toward the central cavity from the second side;, 'a bearing housing between adjacent impellers of the pump, the bearing housing having a first side towards the first end of the casing and a second side toward the second end of the pump casing and defining a central cavity for ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor that reduces pressure loss of fluid blown out from an impeller to improve efficiency is provided. The centrifugal compressor includes: a rotary shaft rotatably supported by a casing ; an impeller provided on the rotary shaft for blowing out fluid sucked from a suction port in a radial direction of the rotary shaft ; a return channel for reversing the fluid blown out from the impeller toward an axis line L of the rotary shaft ; and a discharge port positioned on the axis line L of the rotary shaft for discharging the fluid having passed through the return channel in a direction along the axis line L. 1. A centrifugal compressor comprising:a rotary shaft rotatably supported by a casing;an impeller provided on the rotary shaft for blowing out fluid sucked from a suction port in a radial direction of the rotary shaft;a return channel for reversing the fluid blown out from the impeller toward the rotary shaft; anda discharge port positioned on an axis line of the rotary shaft for discharging the fluid having passed through the return channel in a direction along the axis line; anda bearing for pivotally supporting the rotary shaft,wherein the impeller is provided on a shaft end closer to the discharge port than the bearing.2. (canceled)3. The centrifugal compressor according to claim 1 , wherein the suction port is provided in a direction orthogonal to an axial direction of the rotary shaft.4. The centrifugal compressor according to claim 1 , wherein the return channel includes a return vane on an outlet side of the return channel.5. The centrifugal compressor according to claim 1 , wherein the impeller is provided singularly to perform single-stage compression.6. The centrifugal compressor according to claim 3 , wherein the return channel includes a return vane on an outlet side of the return channel.7. The centrifugal compressor according to claim 3 , wherein the impeller is provided singularly to perform single-stage compression.8. The ...

DIRECT DRIVE-TYPE TURBO BLOWER COOLING STRUCTURE

The present invention relates to a direct drive-type turbo blower cooling structure, and more particularly, to a direct drive-type turbo blower which includes a plurality of holes for cooling a stator along an outer diameter of a motor casing and a plurality of holes for cooling a coil part, a bearing housing, and a rotor to enhance cooling efficiency through the plurality of holes during operation of a cooling fan, thereby providing thermal balance. 1{'b': '100', 'a cylindrical motor casing ();'}{'b': 200', '250, 'a stator () embedded in the motor casing and including a rotor () therein;'}{'b': 300', '310, 'a core ring () formed on one side of the stator and having a cooling air passage hole () through which air passes;'}{'b': '400', 'a left back plate () having a hole through which one side of the rotor passes;'}{'b': '500', 'a left cap () having one surface coupled with the left back plate and including a seal formed to prevent a generated fluid from being leaked by coupling the other side to a scroll volute;'}{'b': '600', 'a right back plate () formed between the motor casing and a cooling fan;'}{'b': '700', 'a bearing housing () disposed at both sides of the rotor and having a bearing for rotatably supporting the rotor;'}{'b': '800', 'an impeller () formed on one surface of the left cap;'}{'b': '900', 'a scroll volute () covering one side of the impeller, guiding flowing generated from the impeller, and converting kinetic energy of the fluid into position energy;'}{'b': '1000', 'a scroll shroud () coupled to one side of the scroll volute so as to surround the impeller and generating hydraulic pressure by making the air flow smoothly when the impeller rotates at a high speed;'}{'b': 1100', '1150, 'a nozzle () as a suction port through which the air flows coupled to one side of the scroll shroud and having a port part () for measuring a flow rate which flows mounted on one side;'}{'b': '1200', 'a cooling fan () coupled to one side of the right back plate;'}{'b': ...

AIR COMPRESSOR

Disclosed herein is an air compressor. The air compressor may include: a compressor unit including a front housing having a front inlet and a compressor blower, and a compressor impeller configured to transfer the air drawn through the front inlet toward the compressor blower; a motor unit including a motor housing coupled with the front housing, a stator disposed along an inner circumferential surface of the motor housing, and a rotor disposed to pass through the stator and coupled with the compressor impeller by a rotating shaft; a turbine unit including a rear housing coupled with the motor housing, a turbine impeller coupled with the rotating shaft, and a turbine blower formed in the rear housing and configured to exhaust air that has passed through the turbine impeller to the outside; and an air cooling unit coupled with the compressor blower to cool the stator and the rotating shaft. 1. An air compressor comprising:a compressor unit comprising: a front housing including a front inlet through which air is drawn, and a compressor blower configured to compress drawn air; and a compressor impeller disposed between the front inlet and the compressor blower and configured to transfer the air drawn through the front inlet toward the compressor blower;a motor unit comprising a motor housing coupled with the front housing, a stator disposed along an inner circumferential surface of the motor housing, and a rotor disposed to pass through a central portion of the stator and coupled with the compressor impeller by a rotating shaft;a turbine unit comprising a rear housing coupled with the motor housing, a turbine impeller coupled with the rotating shaft, and a turbine blower formed in the rear housing and configured to exhaust air that has passed through the turbine impeller to an outside; andan air cooling unit coupled with the compressor blower to receive compressed air from the compressor blower and cool the stator and the rotating shaft.2. The air compressor of claim 1 ...

TWO-WHEEL AIR CYCLE MACHINE

A two-wheel air cycle machine includes a tie rod defining an axis, a turbine mounted on the tie rod, and a compressor mounted on the tie rod and having a rotor portion and a disk portion with at least one aperture. The air cycle machine further includes a compressor inlet fluidly connecting the compressor and an inlet air source, at least one thrust bearing disposed between the turbine and the compressor, and a compressor end shaft coaxial with the tie rod and abutting the compressor disk portion. The compressor end shaft includes a radially-extending seal disk portion and an axially-extending shaft portion having at least one shaft aperture. The at least one disk aperture and the at least one shaft aperture are fluidly connected by a compressor disk cavity defined by a gap between the tie rod and the compressor disk portion. The at least one disk aperture, the compressor disk cavity, and the at least one shaft aperture at least partially define a compressor inlet flow path. 1. A two-wheel air cycle machine comprising:a tie rod defining an axis;a turbine mounted on the tie rod;a compressor mounted on the tie rod, the compressor comprising a rotor portion and a disk portion having at least one disk aperture;a compressor inlet fluidly connecting the compressor and an inlet air source;at least one thrust bearing disposed between the turbine and the compressor; anda compressor end shaft coaxial with the tie rod and abutting the compressor disk portion, the compressor end shaft comprising a radially-extending seal disk portion and an axially-extending shaft portion, the axially extending shaft portion having at least one shaft aperture;wherein the at least one disk aperture and the at least one shaft aperture are fluidly connected by a compressor disk cavity defined by a gap between the tie rod and the compressor disk portion; andwherein the at least one disk aperture, the compressor disk cavity, and the at least one shaft aperture at least partially define a compressor ...

SPEED SENSOR INSERT WITH BEARING SPACER INDEXING FOR A TURBOCHARGER

Modern turbochargers use speed sensors to determine the shaft speed during operation. In order to replace a speed sensor in a turbocharger with journal bearings separated by a spacer, the tip of the speed sensor must be withdrawn from a window in the spacer and replaced through the same window. If the spacer turns while the sensor is removed, then the window will be out of alignment with the axis of the sensor and the sensor cannot be re-inserted through the window. An insert is provided for preventing rotation of the window in the spacer while the sensor is withdrawn. The insert also prevents wear to the speed sensor from the fluctuating contact forces transmitted from the shaft to the bearing spacer and subsequently to the speed sensor. Accordingly, the durability of the speed sensor is improved, the rate of failure and need for sensor replacement, is reduced. 1. A turbocharger bearing housing , includinga bearing bore,two journal bearings located in the bearing bore,a tubular bearing spacer having first and second axial ends for spacing apart said journal bearings, and having at least one radial opening,a mounting bore,a generally tubular insert mounted in the mounting bore and extending into the opening in the opening of the bearing spacer, anda rotational speed sensor mounted to the tubular insert via threaded fitting or friction fit.2. The turbocharger as in claim 1 , wherein the generally tubular insert is mounted in the mounting bore by a screw fit claim 1 , a friction fit claim 1 , a pressed fit or by bonding claim 1 , staking claim 1 , or welding.3. The turbocharger as in claim 1 , wherein the tubular insert and speed sensor are provided with indexing features for setting the depth of penetration of the speed sensor.4. The turbocharger as in claim 1 , wherein the insert has internal threading and external threading.5. The turbocharger as in claim 1 , wherein the bearing housing has an outer surface claim 1 , the tubular insert includes a segment projecting ...

Fan Having An External Rotor Motor And Cooling Duct For Cooling The Motor Electronics And Motor Drive Components

A fan has an external rotor motor with a motor section and an electronics section. The motor section and the electronics section are arranged axially adjacent to each other along the axis of rotation. The fan, when operated as intended, generates, via the fan wheel, a pressure difference between its suction side, which is preferably associated with the rotor, and its pressure side, which is preferably associated with the motor electronics. A continuous cooling duct runs within the external rotor motor from a pressure-side inflow opening, at least along sections of the rotor, to a suction-side outflow opening. An exclusively passive cooling air flow through the cooling duct can be generated in operation by the pressure difference generated by the fan wheel. 1. A fan having an external rotor motor comprising:a rotor rotating about an axis of rotation in a motor section and configured to receive a fan wheel in an outwardly enclosing manner;motor electronics are arranged in an electronic section and housed in an electronics housing, the motor section and the electronics section are arranged axially or radially adjacent to each other along the axis of rotation;the fan generates a pressure difference (Δp) between its suction side and its pressure side by the fan wheel;a continuous cooling duct runs inside the external rotor motor from a flow opening at the electronics housing along the motor electronics and at least along sections of the rotor to a flow opening in the motor section and an exclusively passive cooling air flow through the cooling duct can be generated in operation due to the pressure difference (Δp) generated by the fan wheel to cool both the electronics section and the motor section.2. The fan according to claim 1 , wherein the flow opening at the electronics housing defines a pressure-side inflow opening and the flow opening in the motor section defines a suction-side outflow opening.3. The fan according to claim 2 , wherein multiple cooling fins are ...

VIBRATION DAMPER STRUCTURE AND SERIES FAN THEREOF

A vibration damper structure and a series fan thereof. The vibration damper structure includes a first support body, a second support body and an elastic member. The first support body has a first upper end and a first lower end. The second support body has a second upper end and a second lower end. The elastic member is disposed between the first and second support bodies. The elastic member has a first support end in contact with the first lower end and a second support end in contact with the second lower end. The vibration damper structure is applied to the series fan to greatly reduce the vibration of the series fan in operation. 1. A vibration damper structure applied to a series fan , the series fan comprising a first fan having at least one first bearing and a second fan having at least one second bearing and a serial connection face between the first and second fans , the vibration damper structure comprising:a first support body having a first upper end and a first lower end, the first upper end supporting the first bearing;a second support body having a second upper end and a second lower end, the second upper end supporting the second bearing; andan elastic member disposed between the first and second support bodies to cross over the serial connection face, the elastic member having a first support end in contact with the first lower end and a second support end in contact with the second lower end.2. The vibration damper structure as claimed in claim 1 , wherein the first lower end is formed with a first protrusion section and the second lower end is formed with a second protrusion section claim 1 , the first support end being positioned in the first protrusion section claim 1 , the second support end being positioned in the second protrusion section.3. The vibration damper structure as claimed in claim 1 , wherein a support tubular member is disposed between the first and second support bodies claim 1 , the support tubular member having a first open ...

PORTABLE BLOWER

A battery mounting portion projects convexly into an air passage. Outer surfaces of a bottom surface section and side surface sections of the battery mounting portion form part of an inner surface of the air passage. The battery mounting portion holds a battery pack at an attitude that a center of gravity of the battery pack is as close to a handle portion as possible. Specifically, the battery mounting portion holds the battery pack in such a manner that the greatest surface of the battery pack having a substantially cubic shape faces the handle portion. The battery mounting portion holds the battery pack in such a manner that a longitudinal direction of the battery pack faces the air passage. 1. A portable blower comprising:a battery mounting portion configured to removably mount a battery thereon,characterized in that the battery mounting portion projects convexly into an air passage.2. The portable blower according to claim 1 , wherein:the battery mounting portion is provided in a main body housing and is located behind a handle portion, andthe battery mounting portion projects convexly into an air inlet.3. The portable blower according to claim 2 , wherein the battery mounting portion is configured to hold the battery at an attitude that a center of gravity of the battery is as close to the handle portion as possible.4. The portable blower according to claim 1 , wherein outer surfaces of a bottom surface section and side surface sections of the battery mounting portion form part of an inner surface of the air passage.5. The portable blower according to claim 1 , further comprising a fan having a moving blade claim 1 ,wherein a bearing portion of the motor and the moving blade of the fan overlap with each other in axial-direction positions thereof.6. The portable blower according to claim 1 , further comprising:a fan configured to generate an air current in the air passage at a position behind the motor;an air current arranging cone provided in front of the ...

MULTI-PIECE IMPELLER

An impeller includes a shell having a plurality of blades. The shell may also define a cavity. The impeller may further include a backplate that engages at least a portion of the shell. The backplate can include a post which can be coupled to the impeller through a fastener such as a threaded nut. The backplate can be thereafter clamped to the impeller shell. Seals can be provided in the impeller, such as in the backplate. The backplate and impeller shell can be piloted onto each other. In some forms splines can be used to secure the backplate to the impeller shell. 120-. (canceled)21. A turbomachinery impeller assembly of a gas turbine engine , the assembly comprising:an impeller shell having a first side and a second side, the impeller shell including a number of blades extending from the first side and having aerodynamic shape for changing a pressure of a working fluid flowing through the gas turbine engine, the impeller shell defining a cavity on the second side;a backplate arranged to engage at least a portion of the second side of the impeller shell and secured with the impeller shell for rotation therewith to change the pressure of the working fluid; anda shaft assembly including a shaft secured with the backplate and a bearing for supporting the shaft, wherein the bearing is arranged at least partially within the cavity.22. The turbomachinery impeller assembly of claim 21 , wherein the shaft is attached to the backplate to rotate together with the impeller shell and the backplate.23. The turbomachinery impeller assembly of claim 21 , wherein the impeller shell includes a stiffening ring formed on the second end inhibiting deformation of the impeller shell claim 21 , the stiffening ring at least partially defining the cavity.24. The turbomachinery impeller assembly of claim 22 , wherein the bearing is positioned to have at least a portion arranged radially within the stiffening ring.25. The turbomachinery impeller assembly of claim 24 , further comprising a ...

TURBOCHARGER WITH A HYBRID JOURNAL BEARING SYSTEM

A turbocharger for an internal combustion engine includes a bearing housing defining a bearing bore and a hybrid journal bearing system disposed within the bore. The hybrid journal bearing system includes first and second journal bearings. The first journal bearing is a semi-floating bearing and the second journal bearing is a full-floating bearing. The turbocharger also includes a shaft having a first end and a second end, wherein the shaft is supported by the journal bearing system for rotation about an axis within the bore. The turbocharger also includes a turbine wheel fixed to the shaft proximate to the first end and configured to be rotated about the axis by post-combustion gases emitted by the engine. Additionally, the turbocharger includes a compressor wheel fixed to the shaft proximate to the second end and configured to pressurize an airflow being received from the ambient for delivery to the engine. 1. An internal combustion engine comprising:an engine block defining a cylinder with a combustion chamber configured to receive an air-fuel mixture for combustion therein and configured to exhaust post-combustion gases therefrom; and a bearing housing defining a bearing bore;', 'a hybrid journal bearing system disposed within the bore and having a first journal bearing and a second journal bearing;', 'a shaft having a first end and a second end, the shaft being supported by the journal bearing system for rotation about an axis within the bore;', 'a turbine wheel fixed to the shaft proximate to the first end and configured to be rotated about the axis by the post-combustion gases; and', 'a compressor wheel fixed to the shaft proximate to the second end and configured to pressurize an airflow being received from the ambient for delivery to the cylinder;', 'wherein the first journal bearing is a semi-floating bearing and the second journal bearing is a full-floating bearing., 'a turbocharger including2. The engine of claim 1 , wherein the first journal bearing is ...

FAN MOTOR

A fan motor includes a stationary portion, a rotary portion, and an impeller. The rotary portion is configured to rotate about a center axis with respect to the stationary portion through a bearing mechanism. The impeller is configured to rotate together with the rotary portion. The stationary portion includes an armature including a coil positioned around the center axis, a metal base plate arranged below the armature, and a circuit board located above or below the base plate and provided with a lead wire electrically connected to the outside. The base plate and the lead wire are isolated from each other by a protection member. By installing the protection member between the metal base plate and the lead wire, the lead wire is prevented from making direct contact with the inner peripheral edge of the metal base plate. 1. A fan motor , comprising:a stationary portion;a rotary portion; andan impeller; whereinthe rotary portion is configured to rotate about a center axis with respect to the stationary portion through a bearing mechanism;the impeller is configured to rotate together with the rotary portion;the stationary portion includes an armature including a coil positioned around the center axis, a metal base plate arranged below the armature, and a circuit board located above or below the base plate and provided with a lead wire electrically connected to the outside; andthe base plate and the lead wire are isolated from each other by a protection member.2. The fan motor of claim 1 , wherein the protection member is made of a resin.3. The fan motor of claim 2 , wherein the base plate includes an opening extending therethrough along the center axis claim 2 , the lead wire is positioned near the opening claim 2 , and the protection member is insert molded to encapsulate and cover a portion of the opening.4. The fan motor of claim 3 , wherein the lead wire is led out from above or below the opening.5. The fan motor of claim 3 , wherein the stationary portion further ...

CENTRIFUGAL PUMP

The present invention relates to a novel bearing arrangement for a centrifugal pump. The bearing arrangement comprises a thrust bearing () arranged closer to the end (′) of the shaft () carrying the rotor (), the thrust bearing () being selectable between a four-point contact ball bearing for heavy-duty applications and a single row contact ball bearing for light-duty applications. 142424244424246424242484852525052425042425240544244505042505050ii. A centrifugal pump having a shaft () with a first end (′) and a second end (″) , a rotor () coupled to the first end (′) of the shaft () , an electric motor () for driving the shaft () arranged at the second end (″) of the shaft () , a bearing housing () supporting the shaft () by means of a first bearing assembly () and a second bearing assembly () , the bearing assemblies ( , ) carrying axial and radial loads subjected to the shaft () , the first bearing assembly () being closer to the first end (′) of the shaft () than the second bearing assembly () , the centrifugal pump () being further provided with a sealing means () positioned around the shaft () and between the rotor () and the first bearing assembly () , the first bearing assembly () being a thrust bearing carrying axial loads subjected to the shaft () , wherein the thrust bearing () is a four-point contact ball bearing having a split inner ring ( , ) in applications where high load-carrying capacity is required , and a single row contact ball bearing in applications where low load-carrying capacity is required , whereby in both load conditions;OR{'b': 48', '50', '50', '50, 'i': i', 'i, 'sub': 1', '2, 'wherein the same bearing housing () is used with the thrust bearing () being a four-point contact ball bearing having a split inner ring (, ) in applications where high load-carrying capacity is required, and with a single row contact ball bearing in applications where low load-carrying capacity is required; and'}OR{'b': 50', '50', '50, 'i': i', 'i, 'sub': 1', '2, ...

AIR BLOWER AND CLEANER

An air blower includes a motor including a shaft, an impeller fixed to the shaft, and a motor housing disposed radially outwardly of the motor. The impeller includes an impeller base that extends radially outwardly at an axially lower position. The impeller base includes a boss section fixed to the shaft. The motor housing includes an upper surface cylindrical section that extends axially upward from a radially inner end of the motor housing upper surface. At least a portion of a radially inner surface of the upper surface cylindrical section is radially opposed to a radially outer surface of the shaft or the boss section, and an axially upper end of the upper surface cylindrical section is disposed over an axially lower end of the impeller base and over an upper end of a bearing. 1. An air blower comprising:a motor including a shaft disposed along a central axis extending vertically;an impeller that is disposed over the motor and fixed to the shaft; anda motor housing that is disposed outwardly of the motor in a radial direction;the motor including a bearing that supports the shaft rotatably with respect to the motor housing; an impeller base that extends outwardly in the radial direction at a lower position in an axial direction; and', 'a plurality of blades disposed on an upper surface of the impeller base;, 'the impeller including a boss section fixed to the shaft; and', 'a lower surface recess on an outer side of the boss section in the radial direction, the lower surface recess being included in a lower surface of the impeller base and recessed upwardly in the axial direction;, 'the impeller base including a motor housing upper surface that is disposed under the impeller base, and opposed to the lower surface of the impeller base in the axial direction; and', 'an upper surface cylindrical section in a cylindrical shape, the upper surface cylindrical section extending upward in the axial direction from an inner end of the motor housing upper surface in the ...

FAN NOISE REDUCTION USING AN ADAPTIVE HELMHOLTZ CHAMBER

A fan assembly includes a fan having an outlet side, a fan duct positioned at the fan outlet side, and a hollow cylindrical chamber positioned within the fan duct, wherein the chamber has two closed ends, a cylindrical side wall, and an inlet port. The dimensions of the chamber are determined to suppress one or more noise frequencies emitted by the fan. In one example, one or more dimensions of a chamber disposed in an outlet duct of an axial fan is automatically adjusted to suppress a noise frequency that is a function of a rotational speed of the axial fan. 1. An apparatus , comprising:a fan having an outlet side;a fan duct positioned at the fan outlet side; anda hollow cylindrical chamber positioned within the fan duct, wherein the chamber has two closed ends, a cylindrical side wall, and an inlet port.2. The apparatus of claim 1 , wherein the inlet port is formed in the cylindrical side wall adjacent to a distal end of the chamber.3. The apparatus of claim 1 , wherein the inlet port of the chamber is formed by a series of open slots or an open ring.4. The apparatus of claim 1 , wherein one or more dimension of the chamber is varied in response to a change in fan rotational speed.5. The apparatus of claim 4 , wherein the one or more dimension of the chamber is varied to an extent that is predetermined to cause suppression of a rotational speed-dependent noise frequency.6. The apparatus of claim 5 , wherein the inlet port has a width that is varied in response to a change in fan rotational speed.7. The apparatus of claim 1 , wherein the fan is a variable speed fan.8. The apparatus of claim 1 , wherein the fan is an axial fan having a fan hub claim 1 , and wherein the cylindrical chamber is axially aligned with the fan hub.9. The apparatus of claim 8 , wherein the cylindrical chamber has an outer diameter matching a diameter of the fan hub.10. The apparatus of claim 8 , further comprising:a metal pickup formed at a proximal end of the chamber; andone or more ...

EXHAUST GAS TURBOCHARGER

The invention relates to an exhaust gas turbocharger with a manifold-flow casing, in particular a dual-flow casing () and a turbine wheel () which is rotatably arranged within said manifold-flow casing, onto which an exhaust gas flow () may be led via at least one of several flow channels (), and an outlet opening () following said one flow channel () and covering an angle of 180° max. about an axis of rotation () of the turbine wheel (), so that a shaft () is rotating which is arranged coaxially and non-rotationally relative to the turbine wheel (), which is supported in a shaft bearing (). 1473414161826788018264434383442. An exhaust gas turbocharger with a manifold-flow casing , in particular a dual-flow casing () and a turbine wheel () which is rotatably arranged within said manifold-flow casing , onto which an exhaust gas flow (; ) may be led via at least one of several flow channels ( , ) , and an outlet opening ( and , respectively) following said one flow channel ( , ) and covering an angle of 180° maximum about an axis of rotation () of the turbine wheel () , so that a shaft () is rotating which is arranged coaxially and non-rotationally relative to the turbine wheel () , which is supported in a shaft bearing () ,characterized in that{'b': 42', '70', '72', '74', '76', '18', '26', '18', '26, 'the shaft bearing () is a multi-surface radial plain bearing with a number of the bearing surfaces (, , , ) which is either equal to the number of the flow channels (, ) or an integer multiple of the number of the flow channels (, ).'}2. The exhaust gas turbocharger according to claim 1 ,{'b': 70', '72', '74', '76', '46, 'characterized in that the bearing surfaces (, , , ) are formed consistent with respect to the shape and a distance to the bearing center axis ().'}3. The exhaust gas turbocharger according to claim 1 ,characterized in that{'b': 70', '72', '74', '76', '46', '28', '70', '72', '74', '76', '38', '70', '72', '74', '76, 'the bearing surfaces (, , , ) of the ...

Compressor with vibration sensor

A bearing support (26) for a compressor (10) includes an annular body. The annular body includes a circle opening (28) that is configured to receive a bearing (21) and a shaft (20). A tapered portion (30) is tapered away from the circular opening. The tapered portion (30) includes a passage (32). A vibration sensor (34) is situated in the passage. A compressor and a method of sensing vibration adjacent a bearing in a compressor are also disclosed.

Method for Operating a Fluid Conveying Device of a Motor Vehicle Comprising at Least One Aerodynamic Bearing

A method is provided for operating a fluid conveying device of a motor vehicle having at least one aerodynamic bearing. The method reduces the rotational speed of the aerodynamic bearing to a rest speed, wherein the rest speed is below a lifting speed, in which case the bearing builds up an air film for bearing free of mixed friction, and wherein the rest speed is above a lowering speed, in which case the bearing has reduced the air film such that mixed friction occurs. The fluid conveying device is operated at the rest speed. 1. A method for operating a fluid conveying device of a motor vehicle having at least one aerodynamic bearing , the method comprising the acts of: the rest speed lies below a lifting speed, at which the bearing forms an air film for mounting free from mixed friction, and', 'the rest speed lies above a lowering speed at which the bearing has reduced the air film in such a manner that mixed friction occurs; and', 'operating the bearing of the fluid conveying device at the rest speed., 'reducing a rotational speed of the aerodynamic bearing to a rest speed, wherein'}2. The method according to claim 1 , whereinthe fluid conveying device is not stopped and the bearing is operated at least at the rest speed when the motor vehicle is operating.3. The method according to claim 2 , whereinthe fluid conveying device is not stopped and the bearing is operated at least at the rest speed when the motor vehicle continues to move.4. The method according to claim 1 , wherein the fluid conveying device is not stopped and the bearing is operated at least at the rest speed when the motor vehicle continues to move.5. The method according to claim 3 , whereinthe fluid conveying device is not stopped and the bearing is operated at least at the rest speed when the motor vehicle continues to move at a maximum speed of 70 km/h.6. The method according to claim 5 , wherein the maximum speed is 50 km/h.7. The method according to claim 5 , wherein the maximum speed is 30 ...

Turbo Compressor

To provide a turbo compressor rotatable at high speed that is capable of being downsized, and of being suppressed in performance deterioration at low speed rotation. A turbo compressor includes a housing, a rotating shaft, a motor, a compressor mechanism, and a support section. The support section includes at least three rollers on the rotating shaft, roller shaft portions on the rollers, and a roller bearing portion for supporting the roller shaft portions. The rollers and the rotating shaft respectively have a drive transmission portion for drive transmission from the rotating shaft to each of the rollers, and the drive transmission portion of the rollers has a diameter larger than a diameter of the drive transmission portion of the rotating shaft.

GAS TURBINE ENGINE AND AIRCRAFT WITH A GAS TURBINE ENGINE

A gas turbine engine includes coaxially arranged shafts mounted in a bearing chamber. An interior of the bearing chamber is sealed via sealing units which can be loaded with blocking air on sides facing away from the interior. The pressure of the blocking air is in each case greater than the pressure in the bearing chamber. An intermediate shaft sealing unit is provided radially between the shafts, and can be loaded with the blocking air on both sides in the axial direction, and seals a region between the shafts, adjoining the bearing chamber, from a further region between the shafts. Regions carrying blocking air, in which different pressure levels prevail during operation, are connected together for immediate pressure balance via openings on the side of the intermediate shaft sealing unit facing the sealing units, and on the side of the intermediate shaft unit facing away from the sealing units. 1. A gas turbine engine with at least two coaxially arranged shafts ,which are mounted rotatably via bearings,which are arranged in at least one bearing chamber,wherein an interior of the bearing chamber is sealed via sealing units,the sealing units can be loaded with blocking air on their sides facing away from the interior of the bearing chamber, andthe pressure of the blocking for sealing the bearing chamber in operation of the gas turbine engine is in each case greater than the pressure in the interior of the bearing chamber,wherein at least one intermediate shaft sealing unit is provided radially between the shafts,which can be loaded with the blocking air of the bearing chamber on both sides in the axial direction, andwhich seals a region between the shafts, adjoining the bearing chamber, from a further region between the shafts,wherein regions carrying blocking air and in which different pressure levels prevail during operation of the gas turbine engine, are connected together for pressure balance on the side of the intermediate shaft sealing unit facing the sealing ...

SEAL DEVICE AND ROTARY MACHINE

Provided is a seal device configured to prevent leakage of a fluid on an outer circumferential surface of a rotary shaft in a direction along an axis of the rotary shaft. The seal device includes an annular main body section disposed in a circumferential direction of the rotary shaft, and a plurality of at least two kinds of holes formed in an inner circumferential surface of the main body section opening and facing to the outer circumferential surface of the rotary shaft, and having different depths. 1. A seal device configured to prevent leakage of a fluid on an outer circumferential surface of a rotary shaft in a direction along an axis of the rotary shaft ,the seal device comprising an annular main body section disposed on the outer circumferential surface of the rotary shaft in the circumferential direction of the axis,wherein a plurality of at least two kinds of holes having different depths are formed in the inner circumferential surface of the main body section and are opening and facing to the outer circumferential surface of the rotary shaft.2. The seal device according to claim 1 , wherein the main body section has different stiffness that varies in at least two radial directions of the axis that differ by 90 degrees.3. The seal device according to claim 2 , wherein the main body section is formed such that a depth of the hole in one of the two radial directions is larger than a depth of the hole in the other of the two radial directions.4. The seal device according to claim 3 , wherein the plurality of holes are formed in one direction perpendicular to the axis.5. The seal device according to claim 4 , wherein terminations of the plurality of holes are almost equally distant from the axis in the circumferential direction.6. The seal device according to claim 1 , wherein the main body section is formed to be divisible in the one direction.7. The seal device according to claim 1 , wherein the main body section is formed of a porous body claim 1 , and pores ...

CENTRIFUGAL BLOWING FAN

A centrifugal blowing fan comprises a back yoke made from metal, having a substantially bottomed cylindrical portion around a rotating shaft of a motor, an inner surface attached with a magnet of the motor mounted thereon and a flange portion disposed around a periphery of an opening of the cylindrical portion; and a cylindrical impeller made from resin, having a plurality of blades circumferentially arranged, an annular collar portion joined with first ends of the plurality of blades and a doughnut-shaped disk portion joined with second ends of the plurality of blades, wherein the disk portion has at least one fitting, and the flange portion has at least one fitted space receiving the at least one fitting so as to concentrically and fixedly connect the impeller and the back yoke. 1. A centrifugal blowing fan comprising:a rotating shaft;a back yoke rotated integrally with the shaft, the back yoke having a cylindrical portion and a flange portion disposed around a periphery of an opening of the cylindrical portion;a magnet attached with an inner surface of the cylindrical portion of the back yoke, andan impeller having a plurality of blades circumferentially arranged, and a portion joined with one-side ends of the plurality of blades,wherein, in a radial direction, the flange portion extends below the impeller,wherein the impeller has at least one fitting on an underside of the impeller, and the flange portion of the back yoke has at least one fitted space receiving the at least one fitting so as to connect the impeller and the back yoke in a state where the impeller and the flange portion of the back yoke are joined, andwherein the at least one fitting is inserted through the at least one fitted space from a front surface side of the flange portion and protruded from a back surface side of the flange portion.2. The centrifugal blowing fan according to claim 1 , wherein a size of the fitting which is protruded from the back surface side of the flange portion is ...

ROTOR ASSEMBLY FOR A TURBOMACHINE

A rotor assembly having a first component and a second component. The second component is secured within a bore of the first component by a first adhesive and a second adhesive. The first adhesive forms an annular seal between the first component and the second component, and the second adhesive extends from the first adhesive and has a lower viscosity than that of the first adhesive. 1. (canceled)2. A rotor assembly comprising a first component having a bore , and a second component secured within the bore by a first adhesive and a second adhesive , wherein the first adhesive forms an annular seal between the first component and the second component , the second adhesive extends from the first adhesive and has a lower viscosity than that of the first adhesive , and the second adhesive of the lower viscosity extends axially along a longer length of the bore than the first adhesive of the higher viscosity.3. The rotor assembly of claim 2 , wherein the bore has a first end and a second end claim 2 , the first adhesive is located at a position adjacent the first end claim 2 , and the second adhesive extends from the first adhesive to a position adjacent the second end.4. The rotor assembly of claim 2 , wherein the bore is tapered and the first adhesive is located along a portion of the bore having a smaller diameter than that along which the second adhesive is located.5. The rotor assembly of claim 2 , wherein the bore has one or more axial grooves and the second adhesive is located in the grooves.6. The rotor assembly of claim 5 , wherein the bore has a first end and a second end claim 5 , the grooves extend from the second end and terminate prior to the first end claim 5 , and the first adhesive is located at a position adjacent the first end.7. The rotor assembly of claim 2 , wherein the second adhesive extends axially along a longer length than that of the first adhesive.8. The rotor assembly of claim 2 , wherein the first component is one of a shroud and an ...

INTEGRATED CROSSFLOW BLOWER MOTOR APPARATUS AND SYSTEM

Some embodiments of an apparatus and system are described for a crossflow blower motor. An apparatus may comprise one or more motors operative to control a crossflow blower. The one or more motors may comprise one or more stator assemblies having a stator coil and a bent stator. The one or more motors may be configured to control a crossflow blower arranged to generate a flow of air in a direction substantially perpendicular to an axis of rotation of the crossflow blower. Other embodiments are described. 130-. (canceled)31. An apparatus , comprising:a crossflow blower arranged to generate incoming and exhaust flows of air on a X-Y plane that is substantially perpendicular to an axis of rotation of the crossflow blower; andone or more motors operative to control the crossflow blower, the one or more motors comprising one or more stator assemblies having a stator coil and a stator having two or more portions, wherein one or more portions of the stator extend on a plane different than the X-Y plane and the stator coil is arranged to encircle the one or more portions of the stator that extends on a plane different than the X-Y plane such that the one or more portions of the stator that extends on a plane different than the X-Y plane is arranged inside a portion of the stator coil.32. The apparatus of claim 31 , wherein the stator comprises two or more portions of conductive material that are coupled together and wherein the stator coil is arranged around the one or more portions of the stator that extend on a plane different than the X-Y plane.33. The apparatus of claim 31 , wherein the one or more portions of the stator that extend on a plane different than the X-Y plane are configured to extend on an angle away from the X-Y plane in a direction of the axis of rotation of the crossflow blower.34. The apparatus of claim 31 , comprising:a housing;an impeller having one or more impeller blades;one or more bearings to couple the impeller to the housing; andone or more ...

MOTOR

The present embodiment comprises: a rotary shaft; a rotor mounted on the rotary shaft; a stator for encompassing the outer circumference of the rotor; an impeller mounted on the rotary shaft so as to be spaced from the rotor; a bearing housing having a through-hole through which the rotary shaft passes; a rolling bearing disposed in the bearing housing and coupled to the rotary shaft; and a gas bearing disposed in the bearing housing so as to be spaced from the rolling bearing in an axial direction, and facing the outer circumference of the rotary shaft. 1. A motor comprising:a rotary shaft;a rotor mounted on the rotary shaft;a stator configured to surround an outer circumference of the rotor;an impeller mounted on the rotary shaft so as to be spaced apart from the rotor;a bearing housing having a through-hole through which the rotary shaft passes;a rolling bearing disposed in the bearing housing and coupled to the rotary shaft; anda gas bearing disposed in the bearing housing so as to be spaced apart from the rolling bearing in an axial direction, the gas bearing facing an outer circumference of the rotary shaft.2. The motor according to claim 1 , wherein the rotary shaft comprises:an impeller coupling portion to which the impeller is coupled;a rotor coupling portion to which the rotor is coupled; anda supporter supported by the rolling bearing and the gas bearing,wherein the supporter is disposed between the impeller coupling portion and the rotary coupling portion in the axial direction.3. The motor according to claim 1 , wherein the rotor claim 1 , the impeller claim 1 , the rolling bearing claim 1 , and the gas bearing are sequentially disposed in order of the rotor claim 1 , the rolling bearing claim 1 , the gas bearing claim 1 , and the impeller.4. The motor according to claim 3 , wherein the rolling bearing is closer to the rotor of the rotor and the impeller.5. The motor according to claim 3 , wherein the gas bearing is closer to the impeller of the rotor ...

COMPRESSOR

A compressor that includes a frame, a rotor assembly, and a heat sink assembly. The rotor assembly includes a bearing assembly to which the heat sink assembly is secured. The compressor is configured such that, during use, air is drawn through the interior of the frame. The heat sink assembly then extends radially from the bearing assembly into the air path through the frame such that the air flows over the heat sink assembly. 1. A compressor comprising a frame , a rotor assembly , and a heat sink assembly , wherein the rotor assembly comprises a bearing assembly to which the heat sink assembly is secured , the compressor is configured such that during use air is drawn through the interior of the frame , the heat sink assembly comprises a heat sink that is generally disc shaped , the heat sink extends radially from the bearing assembly into the air path through the frame , and air flows radially over the surface of the heat sink.2. The compressor of claim 1 , wherein the rotor assembly comprises an impeller claim 1 , the heat sink is located beneath the impeller claim 1 , and the air flows over the heat sink in a radially inward direction.3. The compressor of claim 2 , wherein the heat sink projects into the underside of the impeller.4. The compressor of claim 1 , wherein the heat sink assembly comprises a sleeve claim 1 , the heat sink is secured to the sleeve at one end claim 1 , and a further heat sink is secured to the sleeve at an opposite end claim 1 , the sleeve is secured to the bearing assembly claim 1 , the further heat sink comprises a plurality of legs that extend radially from the sleeve claim 1 , and air flows axially between adjacent legs. This application is a continuation of U.S. patent application Ser. No. 14/268,804, filed May 2, 2014, which claims the priority of United Kingdom Application No. 1308092.4, filed May 3, 2013, the entire contents of each of which are incorporated herein by reference.The present invention relates to a compressor. ...

CENTRIFUGAL COMPRESSOR HAVING A BEARING ASSEMBLY

Embodiments of the present disclosure are directed towards an annular bearing retainer ring comprising a first axial surface, wherein the first axial surface is planar, and a second axial surface, wherein the second axial surface is non-planar. 1. A compressor , comprising:a gear box comprising a retaining bore; and a rotor;', 'a bearing disposed about the rotor and configured to reduce friction acting on the rotor, wherein the bearing is disposed within the retaining bore of the gear box; and', a first axial surface, wherein the first axial surface is planar; and', 'a second axial surface opposite the first axial surface, wherein the second axial surface is non-planar., 'a bearing retainer disposed about the rotor and within the retaining bore of the gear box, wherein the bearing retainer comprises], 'a rotor assembly, comprising2. The compressor of claim 1 , wherein the first axial surface abuts the retaining bore and the second axial surface abuts the bearing when the bearing retainer is in a first position claim 1 , and the first axial surface abuts the bearing and the second axial surface abuts the retaining bore when the bearing retainer is in a second position.3. The compressor of claim 2 , wherein the bearing has a first axial position within the gear box when the bearing retainer is in the first position claim 2 , the bearing has a second axial position within the gear box when the bearing retainer is in the second position claim 2 , and the first and second axial positions are different.4. The compressor of claim 1 , wherein the second axial surface comprises an inner radial surface and an outer radial surface claim 1 , wherein the inner radial surface and the outer radial surface are axially offset from one another.5. The compressor of claim 4 , wherein a first thickness between the inner radial surface and the first axial surface is less than a second thickness between the outer radial surface and the first axial surface.6. The compressor of claim 1 , ...

THRUST PLATE ASSEMBLY

An aspect is a thrust plate assembly for an air cycle machine. The thrust plate assembly includes an annular body defined by an outer rim and a main bore. The annular body includes a nozzle side and a thrust bearing side. The nozzle side includes a nozzle region proximate the outer rim and a turbine rotor region proximate the main bore, where the outer rim has an outer diameter. The thrust plate assembly also includes a main bore seal installed in the main bore. The main bore seal has an inner diameter, where a ratio of the outer diameter of the outer rim to the inner diameter of the main bore seal is between 3.94 and 3.96. 1. A thrust plate assembly for an air cycle machine , comprising:an annular body defined by an outer rim and a main bore, the annular body comprising a nozzle side and a thrust bearing side, the nozzle side comprising a nozzle region proximate the outer rim and a turbine rotor region proximate the main bore, the outer rim having an outer diameter; anda main bore seal installed in the main bore, the main bore seal having an inner diameter, wherein a ratio of the outer diameter of the outer rim to the inner diameter of the main bore seal is between 3.94 and 3.96.2. The thrust plate assembly of claim 1 , wherein an axial thickness of the nozzle region is greater than an axial thickness of the turbine rotor region.3. The thrust plate assembly of claim 2 , wherein a ratio of the inner diameter of the main bore seal to the axial thickness of the turbine rotor region is between 5.63 and 5.85.4. The thrust plate assembly of claim 2 , wherein a ratio of the outer diameter of the outer rim to the axial thickness of the turbine rotor region is between 22.24 and 23.06.5. The thrust plate assembly of claim 1 , wherein the outer rim comprises a lip defining a transition between the outer rim and the nozzle region claim 1 , the lip having an inner lip diameter claim 1 , and a ratio of the inner lip diameter to the inner diameter of the main bore seal is between ...

MOTOR, AND MOTOR CONTROL SYSTEM

This invention prevents seizure of a dynamic pressure gas bearing caused upon swinging contact between a motor shaft and a sleeve and an increase in contact friction torque. It also detects rotation of auxiliary bearings. A motor includes auxiliary bearings in series with a dynamic pressure gas bearing, and a non-contact detent torque generation mechanism parallel to the auxiliary bearings suppresses rotation of the auxiliary bearings. Where Ta denotes rotation-time viscous friction torque of the dynamic pressure gas bearing, Tka denotes contact friction torque possibly causing damage to the dynamic pressure gas bearing, Tb denotes rotation friction torque of the auxiliary bearings, and Tddenotes maximum torque generated when rotation of the auxiliary bearings is suppressed by the non-contact detent torque generation mechanism, (Ta+Tka)>(Tb+Td)>(Ta), and the rotation detecting means detects the rotation of the auxiliary bearings.

SLIM FAN AND OIL BEARING STRUCTURE OF FAN

An oil bearing structure of a fan includes a shaft seat, a rotating shaft, and an oil bearing. The shaft seat includes a boss. A middle portion of the boss defines a slot. One end of the rotating shaft is inserted into the slot. Another end of the rotating shaft is a free end. The oil bearing is sleeved on an outer periphery of the rotating shaft. An axis of the rotating shaft and an axis of the oil bearing are perpendicular to the shaft seat. An effective length of the oil bearing and the rotating shaft is 50%-70% of a length of the fan. 1. An oil bearing structure of a fan , the oil bearing structure comprising:a shaft seat comprising a boss, a middle portion of the boss defining a slot;a rotating shaft, one end of the rotating shaft inserted into the slot, and another end of the rotating shaft being a free end; andan oil bearing sleeved on an outer periphery of the rotating shaft; wherein:an axis of the rotating shaft and an axis of the oil bearing are perpendicular to the shaft seat;an effective length of the oil bearing and the rotating shaft is 50%-70% of a length of the fan.2. The oil bearing structure of claim 1 , wherein:an oil film is located between a contact surface of the rotating shaft and the oil bearing.3. The oil bearing structure of claim 1 , wherein:a gap between the oil bearing and the boss is 0.15-0.25 mm.4. The oil bearing structure of claim 1 , further comprising a base claim 1 , wherein:an end of the oil bearing facing the boss is provided with a support portion covering an outer periphery of the boss;the support portion fixes the oil bearing on the boss; andthe base is located at an end of the oil bearing facing away from the shaft seat for fixing a position of the oil bearing.5. The oil bearing structure of claim 4 , wherein:a fixing ring is arranged on the base surrounding an outer periphery of the oil bearing;one end of the fixing ring is fixed on the base, and another end of the fixing ring comprises a limiting ring extending toward the ...

Turbocharger and Method

A turbocharger includes a turbine, a compressor, and a bearing housing forming a bearing bore. A bearing arrangement is disposed between a shaft interconnecting the turbine and compressor wheels, and the bearing housing. The bearing arrangement includes first and second bearings formed between an outer bearing race element disposed within the bearing bore an inner bearing race element disposed within the outer bearing race element and between the outer bearing race element and the shaft. The inner bearing race element includes a flared portion extending radially outwardly to provide torsional and bending rigidity to the shaft. 1. A turbocharger , comprising:a turbine that includes a turbine wheel;a compressor that includes a compressor wheel;a bearing housing disposed and connected between the turbine and the compressor, the bearing housing forming a bearing bore therethrough;a shaft rotatably disposed within the bearing housing and extending into the turbine and the compressor, wherein the turbine wheel is connected to one end of the shaft and wherein the compressor wheel is connected to an opposite end of the shaft such that the turbine wheel is rotatably disposed in the turbine and the compressor wheel is rotatably disposed in the compressor;a bearing arrangement disposed between the shaft and the bearing housing, the bearing arrangement including first and second bearings, each of the first and second bearings formed by a respective first and second plurality of roller elements engaged between a respective first and second inner race and a respective first and second outer race;an outer bearing race element disposed within the bearing bore and forming the respective first and second outer races; andan inner bearing race element disposed within the outer bearing race element and between the outer bearing race element and the shaft, the inner bearing race element forming the respective first and second inner races such that the respective first inner race is ...

Turbocharger and Method

A turbocharger includes a turbine, a compressor, and a bearing housing forming a bearing bore. A bearing arrangement is disposed between a shaft interconnecting the turbine and compressor wheels, and the bearing housing. The bearing arrangement includes first and second bearings formed within an outer bearing race element having an outer wall that engages a bearing bore along four bearing surfaces that are disposed in pairs around two oil feed galleys formed in the outer wall, the outer wall further forming peripherally extending oil drainage grooves disposed such that oil provided from the oil feed galleys that passes through some of the bearing surfaces drains through the peripherally extending oil drainage grooves. 1. A turbocharger , comprising:a turbine that includes a turbine wheel;a compressor that includes a compressor wheel;a bearing housing disposed and connected between the turbine and the compressor, the bearing housing forming a bearing bore and first and second oil feed passages;a shaft rotatably disposed within the bearing housing and extending into the turbine and the compressor, wherein the turbine wheel is connected to one end of the shaft and wherein the compressor wheel is connected to an opposite end of the shaft such that the turbine wheel is rotatably disposed in the turbine and the compressor wheel is rotatably disposed in the compressor;a bearing arrangement disposed between the shaft and the bearing housing, the bearing arrangement including first and second roller bearings, each of the first and second bearings formed between an outer bearing race element disposed in the bearing bore, and an inner bearing race element disposed in the outer bearing race element;wherein the outer bearing race element has a hollow cylindrical shape that forms an outer wall that engages the bearing bore along first, second, third and fourth cylindrical bearing surfaces, the outer wall having a first end disposed adjacent the first bearing surface and a second ...

Turbocharger and Method

A turbocharger includes a turbine, a compressor, and a bearing housing forming a bearing bore. A bearing arrangement is disposed between a shaft interconnecting the turbine and compressor wheels, and the bearing housing. The bearing arrangement engages the bearing housing along first, second, third and further squeeze film diameters (SFDs) such that the first SFD is different than the third SFD, the first SFD is equal to the second SFD, and the third SFD is equal to the fourth SFD. 1. A turbocharger , comprising:a turbine that includes a turbine wheel;a compressor that includes a compressor wheel;a bearing housing disposed and connected between the turbine and the compressor, the bearing housing forming a bearing bore having and first and second oil feed passages;a shaft rotatably disposed within the bearing housing and extending into the turbine and the compressor, wherein the turbine wheel is connected to one end of the shaft and wherein the compressor wheel is connected to an opposite end of the shaft such that the turbine wheel is rotatably disposed in the turbine and the compressor wheel is rotatably disposed in the compressor;a bearing arrangement disposed between the shaft and the bearing housing, the bearing arrangement including an outer bearing race element disposed in the bearing bore, wherein the outer bearing race element has a hollow cylindrical shape that engages the bearing bore along first, second, third and fourth cylindrical bearing surfaces, outer bearing race element having a first end disposed adjacent the first bearing surface and a second end disposed adjacent the fourth bearing surface;wherein close to the first end, the outer bearing race element forms a first oil feed galley that at least partially overlaps with the first oil feed passage and is disposed between the first and second bearing surfaces in an axial direction along the bearing bore; andwherein close to the second end, the outer bearing race element forms a second oil feed ...

MOVEABLE INLET GUIDE VANES

An inlet guide vane assembly for a compressor is provided. The inlet guide vane assembly may include a hub configured to be disposed in an inlet of the compressor, and an inlet guide vane extending from the hub. The inlet guide vane may include a stationary section configured to be coupled with the inlet and a mobile section disposed adjacent the stationary section. The mobile section may include a rod configured to extend through an opening formed in the inlet. The inlet guide vane assembly may also include at least one biasing member disposed about the rod and configured to exert a biasing force on the mobile section to urge the mobile section radially outward. 1. An inlet guide vane assembly for a compressor , comprising:a hub configured to be disposed in an inlet of the compressor; a stationary section configured to be coupled with the inlet; and', 'a mobile section disposed adjacent the stationary section and comprising, 'an inlet guide vane extending from the hub and comprisinga rod configured to extend through an opening formed in the inlet; andat least one biasing member disposed about the rod and configured to exert a biasing force on the mobile section to urge the mobile section radially outward.2. The inlet guide vane assembly of claim 1 , wherein the mobile section is configured to rotate about an axis of the rod to vary one or more fluid properties of a process fluid flowing through the inlet of the compressor.3. The inlet guide vane assembly of claim 2 , further comprising at least one bearing disposed about the rod and configured to facilitate the rotation of the mobile section about the axis.4. The inlet guide vane assembly of claim 3 , wherein the at least one bearing is a flanged bearing claim 3 , and the biasing member is further disposed between the flanged bearing and a rotatable member coupled with the rod.5. The inlet guide vane assembly of claim 3 , further comprising a spacer disposed adjacent the at least one biasing member and configured ...

Centrifugal Pump

The pump, which is for implantation into a human heart, has a flow path through a housing (), a rotatable pump member () within the housing for causing fluid to flow along the flow path, the pump member being rotatably coupled to the housing about an upstream bearing () and a downstream bearing (). The downstream bearing comprises a bearing member () on the pump member and a complementary bearing formation () on the housing, The pump has a mechanical adjuster () for fine adjustment of the position of the bearing formation () along an axis (A) of the pump member; the mecahnical adjuster being preferably one or more screws () for adjustable movement of a boss () along the axis (A), the adjustable movement being permitted by flexure of a plate member () integral with the boss. 114-. (canceled)15. A centrifugal pump comprising:a) a housing comprising a fluid inlet, a fluid outlet, a flow path which extends between the fluid inlet and the fluid outlet, and a plate member forming part of the housing;b) a rotatable pump member including an impeller configured to rotate about an axis of the pump member, the impeller being within the housing and configured to cause fluid to flow along said flow path from said fluid inlet to said fluid outlet;c) an upstream bearing for coupling the pump member to the housing;d) a downstream bearing comprising a bearing member on the pump member and a bearing formation on the housing, said bearing formation being complementary to said bearing member; ande) a mechanical adjuster for fine adjustment of the position of said bearing formation along the axis of the pump member, said mechanical adjuster being configured to flex the plate member and move the bearing member along the axis of the pump member.16. A pump according to claim 15 , wherein the bearing formation is provided in a boss integral with the plate member.17. A pump according to claim 16 , wherein the boss has an outer circumferential surface and the bearing member has an inner ...

TURBOCHARGER BEARING HOUSING OIL GROOVE

A turbocharger for an internal combustion engine includes a bearing housing and a bearing bore defined by the bearing housing. The bearing bore has an annular bearing groove configured to receive a fluid. A journal bearing is disposed within the bore such that the annular bearing groove encircles the journal bearing and feeds the fluid thereto. The turbocharger also includes a rotating assembly having a shaft with a turbine wheel and a compressor wheel. The shaft has a longitudinal axis and is supported by the journal bearing for rotation within the bore about the axis. The annular bearing groove is characterized by a trapezoidal shape in a cross-sectional view of the bearing bore taken along and through the longitudinal axis. The trapezoidal shape is configured to generate Taylor vortices in the fluid for capturing debris carried by the fluid and keeping the debris from being fed to the journal bearing. 1. An internal combustion engine comprising:an engine block defining a combustion chamber configured to receive an air-fuel mixture for combustion therein and configured to exhaust post-combustion gasses therefrom; and a bearing housing;', 'a bearing bore defined by the bearing housing and having an annular bearing groove configured to receive a fluid;', 'a journal bearing disposed within the bearing bore such that the annular bearing groove encircles the journal bearing and feeds the fluid thereto; and', 'a rotating assembly having a shaft with a turbine wheel configured to be driven by the post-combustion gasses and a compressor wheel configured to pressurize the airflow for delivery to the combustion chamber;', the shaft has a longitudinal axis and is supported by the journal bearing for rotation within the bearing bore about the longitudinal axis;', 'the annular bearing groove is characterized by a trapezoidal shape in a cross-sectional view of the bearing bore taken along and through the longitudinal axis; and', 'the trapezoidal shape is configured to generate ...

BEARING MECHANISM AND BLOWER FAN

A sleeve housing of a bearing mechanism according to a preferred embodiment of the present invention includes a cylindrical portion arranged to cover outer circumferences of a sleeve and a plate portion, and a bottom portion arranged to close a lower portion of the cylindrical portion. The bottom portion includes a plurality of projecting portions arranged in a circumferential direction in an upper surface of the bottom portion. Each projecting portion is arranged to project upward to be in contact with a lower surface of the sleeve. Each of the projecting portions and the plate portion are arranged radially opposite each other. At least a portion of an adhesive is arranged to exist between an outer circumferential surface of the sleeve and an inner circumferential surface of the cylindrical portion. 1. A bearing mechanism comprising:a shaft arranged to have a central axis extending in a vertical direction as a center thereof;a sleeve in which the shaft is inserted;a plate portion in a shape of a disk, arranged to extend radially outward from a lower end of the shaft, arranged opposite to a lower surface of the sleeve, and arranged to have a diameter smaller than that of the lower surface of the sleeve;a sleeve housing inside which the sleeve and the plate portion are arranged;an adhesive arranged to adhere the sleeve and the sleeve housing to each other; anda lubricating oil; wherein a cylindrical portion arranged to cover outer circumferences of the sleeve and the plate portion; and', 'a bottom portion arranged to close a lower portion of the cylindrical portion;, 'the sleeve housing includesthe bottom portion includes a plurality of projecting portions arranged in a circumferential direction in an upper surface of the bottom portion, each projecting portion being arranged to project upward to be in contact with the lower surface of the sleeve;each of the projecting portions and the plate portion are arranged radially opposite each other;at least a portion of the ...

SWIRL INDUCING BEARING HOUSING SPACER AND CORE

A turbocharger () having a bearing housing () between a turbine housing and a compressor housing with a shaped core () forming an internal oil drain cavity () adjacent to a spacer () shaped to induce swirling for oil defoaming. A depression () in an internal core wall of the bearing housing () forms the oil drain cavity () with each end () of the depression () corresponding to a distal end () of the spacer (). The spacer () is preferably substantially tubular with a row of oil-flow apertures () aligned on each outer span () of a recessed center portion () to induce swirling. 110. A turbocharger () comprising:{'b': 14', '16', '18', '20', '24, 'a bearing housing () with a core () having a depression () forming an oil drain cavity () adjacent to a spacer () shaped to induce swirling for oil defoaming.'}2101814282422183024. The turbocharger () of wherein the depression () is U-shaped in the bearing housing () adjacent to a center portion () of the spacer () claim 1 , and each end () of the depression () corresponds to distal ends () of the spacer ().31024283024323428. The turbocharger () of wherein the spacer () is substantially tubular with the center portion () being inwardly recessed having a smaller diameter than a diameter of the distal ends () of the substantially tubular spacer () and a row of oil-flow apertures () aligned on each outer span () of the inwardly recessed center portion ().41032. The turbocharger () of wherein each row of oil-flow apertures () includes at least eight apertures.51030241628. The turbocharger () of wherein the distal ends () of the substantially tubular spacer () are cylindrical and aligned with corresponding round wall portions of the core () so that oil flows toward the inwardly recessed center portion ().610202616. The turbocharger () of wherein the oil drain cavity () is above an oil drain () as part of the core () for return of oil to an engine crankcase.710. A turbocharger () comprising:{'b': 14', '16', '18', '14', '20', '24, 'a ...

VACUUM SUCTION UNIT

A vacuum suction unit is provided. The vacuum suction unit includes a cover, an impeller, a motor, a guide device which includes a guide body and a guide vane, a flow guide which is disposed below the guide device and guides the air guided by the guide device toward the stator, and a motor housing which accommodates the motor and includes an air outlet. Here, a guide surface at least a part of which has a diameter reduced as getting downward is formed at a bottom surface of the flow guide, the guide vane includes a first guide vane which is provided on a side of the guide body and guides the air ejected from the impeller, and an inlet angle of the first guide vane is within a range from 10 to 25 degrees. 1. A vacuum suction unit comprising:a cover including an air inlet;an impeller for moving air which flows in through the air inlet;a motor including a stator and a shaft which is connected to the impeller and rotates with respect to the stator;a guide device including a guide body disposed below the impeller and a guide vane provided at the guide body to guide air ejected from an outlet of the impeller;a flow guide disposed below the guide device and guides the air guided by the guide device toward the stator; anda motor housing accommodating the motor and comprises an air outlet,wherein a guide surface at least a part of which has a diameter reduced as getting downward is formed at a bottom surface of the flow guide,wherein the guide vane comprises a first guide vane which is provided on a side of the guide body and guides the air ejected from the impeller, andwherein an inlet angle of the first guide vane is within a range from 10 to 25 degrees.2. The vacuum suction unit of claim 1 , wherein the guide vane further comprises a second guide vane which is provided at a bottom surface of the guide body claim 1 , is connected to the first guide vane claim 1 , and guides the air guided by the first guide vane.3. The vacuum suction unit of claim 1 , wherein the guide ...

Compression Apparatus

Provided is a compression apparatus that can appropriately cool a motor even in a high-temperature operation environment. A rotating shaft, a main compressor attached to the rotating shaft, and which compresses ambient gases and to emit a compressed gas, a motor attached to an upstream side of the main compressor on the rotating shaft, and which drives the main compressor, a turbine provided at the upstream side of the main compressor, and which expands a part of the ambient gas to generate a low-temperature gas to be used to cool the motor, and a sub compressor provided at the upstream side of the main compressor and at a downstream side of the turbine, and which compresses the low-temperature gas used to cool the motor to pressure equal to the ambient gas, wherein the main compressor generates the compressed gas by mixing and compressing the low-temperature gas compressed by the sub compressor and a part of the remaining ambient gas. 1. A compression apparatus comprising:a first rotating shaft;a first compressor attached to the first rotating shaft, and adapted to compress an ambient gas to emit a high-pressure compressed gas;a first motor attached to an upstream side of the first compressor on the first rotating shaft, and adapted to drive the compressor; andexpansion means provided at an upstream side of the compressor, and adapted to expand a part of the ambient gas to generate a low-temperature gas to be used to cool the first motor.2. The compression apparatus according to claim 1 , further comprising:a second compressor provided at the upstream side of the first compressor and at a downstream side of the expansion means, and adapted to compress the low-temperature gas used to cool the first motor to a pressure equal to the ambient gas, whereinthe first compressor mixes and compresses the low-temperature gas compressed by the second compressor, and a part of the remaining ambient gas to generate the compressed gas.3. The compression apparatus according to ...

COMPACT SQUEEZE FILM DAMPER BEARING

A bearing assembly for a rotary machine is disclosed herein. The bearing assembly includes a bearing housing, a squeeze film cylinder, a damper spring, and a journal bearing. The squeeze film cylinder is located within the bearing housing. The damper spring includes a first portion, a second portion, and a spring portion. The first portion is located proximal the first end. The second portion is located proximal the second end. The spring portion extends axially between the first portion and the second portion and is located within the bearing housing. 1. A bearing assembly for a rotary machine , the bearing assembly comprising: a first end, and', 'a second end opposite the first end;, 'a housing body, the housing body being a solid of revolution with a hollow interior, the housing body including'}, 'a bearing housing including'}a squeeze film cylinder located within the bearing housing, the squeeze film cylinder including a squeeze film cylindrical portion extending from proximal the first end towards the second end, the squeeze film cylindrical portion including a hollow cylinder shape; a first portion proximal the first end,', 'a second portion proximal the second end, and', 'a spring portion extending axially between the first portion and the second portion, the spring portion being located completely within the bearing housing; and, 'a damper spring including'}a journal bearing located within the bearing housing.2. The bearing assembly of claim 1 , wherein: an oil supply annulus formed in the housing body at the hollow interior, and', 'one or more oil supply passages extending outward from the oil supply annulus and through the housing body; and, 'the bearing housing also includes'}the squeeze film cylindrical portion extends at least to the oil supply annulus, and the bearing housing and the squeeze film cylindrical portion form a squeeze film annulus there between extending from the oil supply annulus toward the first end.3. The bearing assembly of claim 2 , ...

Load-Relieving Device

An arrangement for compensating the axial thrust of a fluid-flow machine is provided. A load-relieving element is non-rotatably connected to a shaft. A flow-restrict gap is formed by the load-relieving element and a counter-element secured to a housing of the fluid-flow machine. The counter-element is provided with a device for maintaining the distance between the load-relieving element and the counter-element. The device includes at least one force-generating element that generates a force that acts in opposition to the axial thrust in order to avoid component contact. 110-. (canceled)11. An arrangement for compensating the axial thrust of a fluid-flow machine , comprising:a rotatable shaft;a casing configured to receive the shaft;a load-relieving element configured for conjoint rotation with the shaft within the casing;a counter-element configured to be non-rotatably fixed to the casing, the counter element and the load-relieving element being arranged to cooperate to form a radial flow-restrictor gap therebetween; anda distance-maintaining element configured to prevent the radial flow restrictor gap between the counter element and the load-relieving element being closed, the distance-maintaining element including at least one force-generating element configured to generate a force opposed to an axial thrust created during rotation of the shaft within the casing.12. The arrangement as claimed in claim 11 , whereinthe distance-maintaining element includes an axially movable element movable along a longitudinal axis of the shaft.13. The arrangement as claimed in claim 12 , whereinthe at least one force-generating element is arranged between the counter-element and the axially movable element.14. The arrangement as claimed in claim 13 , whereina sliding bearing element is arranged on the axially movable element.15. The arrangement as claimed in claim 14 , whereinthe counter-element includes a guide for the axially movable element.16. The arrangement as claimed in ...

VACUUM PUMP

A vacuum pump comprises a rotor shaft, which bears one or more rotor elements. The rotor shaft is driven by an electrical driver. A stator is arranged between the rotor elements. The rotor shaft is supported by bearings. The highly heat-generating components such as the driver and the stator are connected to a second housing part in particular by means of a support member. Heat-sensitive components such as the bearing are supported by means of a separate first housing part. The two housing parts can be kept at different temperatures, for example by means of separate cooling devices. Thus, the operating temperature of the in particular pressure-side bearing can be reduced, and therefore the service life can be extended. 2. The vacuum pump of claim 1 , wherein said second housing part is connected with the driver in a thermally conductive manner.3. The vacuum pump of claim 2 , wherein the second housing part is connected with the driver via a support member.4. The vacuum pump of claim 3 , wherein the support member is connected at least with a stator in particular of a Holweck stage claim 3 , a Siegbahn stage claim 3 , a Gaede stage or a side-channel compressor.5. The vacuum pump of claim 1 , wherein the second housing part is connected with the support member and/or the driver and/or the stator in a thermally well conductive manner.6. The vacuum pump of claim 1 , wherein the first housing part is connected with one of the bearings.7. The vacuum pump of claim 1 , wherein the first housing part is connected with a controller that generates particularly little heat.8. The vacuum pump of claim 1 , wherein the first housing part and the second housing part are connected via a connection of low thermal conductivity.9. The vacuum pump of claim 1 , wherein the first housing part and the second housing part are thermally decoupled from each other.10. The vacuum pump of claim 1 , wherein the first housing part and the second housing part are connected with a separate cooler ...

ROTARY MACHINE WITH GAS BEARINGS

A rotary machine for an aeronautical device includes a thrust generator. The rotary machine additionally includes a rotary component rotatable with the thrust generator. Moreover, the rotary machine of the present disclosure includes a plurality of gas bearings, with the plurality of gas bearings substantially completely supporting the rotary component of the rotary machine. 1. A rotary machine for an aeronautical device , the rotary machine comprising:a thrust generator;a rotary component rotatable with the thrust generator; anda plurality of gas bearings, the plurality of gas bearings substantially completely supporting the rotary component.2. The rotary machine of claim 1 , wherein the rotary machine comprises a turbomachine claim 1 , wherein the thrust generator comprises a compressor section and a turbine section of the turbomachine claim 1 , and wherein the compressor section comprises a compressor claim 1 , and wherein the turbine section comprises a turbine.3. The rotary machine of claim 2 , wherein the rotary component comprises a spool attached to and rotatable with the compressor and the turbine claim 2 , and wherein the plurality of gas bearings substantially completely support the spool.4. The rotary machine of claim 3 , wherein the compressor comprises a first stage of compressor rotor blades and a second stage of compressor rotor blades claim 3 , wherein the first and second stages of compressor rotor blades are attached through a connector claim 3 , wherein the plurality of gas bearings comprises a gas bearing directly supporting the spool and a gas bearing directly supporting the connector.5. The rotary machine of claim 4 , wherein the gas bearing directly supporting the connector is in airflow communication with claim 4 , and is configured to receive a flow of working gas from claim 4 , the compressor section at a location downstream of the second stage of compressor rotor blades.6. The rotary machine of claim 3 , wherein the turbine comprises two ...

CENTER BUSHING TO BALANCE AXIAL FORCES IN MULTI-STAGE PUMPS

A multi-stage pump featuring different stages configured to pump a fluid from a pump suction and to a pump discharge; and a center bushing configured between the different stages, having a center bushing side configured with pockets to balance axial forces between the different stages of the multistage pump. The pockets are configured as curved rib pockets, extruded circle or circular pockets, or full length rib pockets. 1. A multi-stage pump comprising:a pump having different stages configured to pump a fluid from a pump suction and to a pump discharge; anda center bushing configured between the different stages, having a center bushing side configured with pockets to balance axial forces between the different stages of the multistage pump.2. A multi-stage pump according to claim 1 , wherein the pockets are configured as radially-formed rib pockets.3. A multi-stage pump according to claim 2 , wherein the center bushing side comprises a center bushing surface having an inner wall claim 2 , an outer wall and a plurality of radial walls all extending from the center bushing surface claim 2 , each radially-formed rib pocket having a combination of an inner wall portion claim 2 , a corresponding outer wall portion and adjacent radial walls connecting the inner wall portion and the corresponding outer wall portion.4. A multi-stage pump according to claim 3 , wherein the inner wall includes claim 3 , or forms part of claim 3 , an inner circular wall extending around the inner edge of the center bushing.5. A multi-stage pump according to claim 4 , wherein the outer wall includes claim 4 , or forms part of claim 4 , an outer circular wall extending around the outer edge of the center bushing.6. A multi-stage pump according to claim 3 , wherein the outer wall includes claim 3 , or takes the form of claim 3 , an outer circular wall extending around the outer edge of the center bushing.7. A multi-stage pump according to claim 1 , wherein the pockets are configured as curved ...

Ventilation Assembly

A ventilation assembly for a vehicle has a stationary load-bearing structure, including an outer frame and an inner annular support element connected to the frame by means of a plurality of spokes. The support element has a cylindrical outer skirt. An electric motor has an inner stator fixed to the annular support element and an outer rotor which extends around the stator. A fan fixed to the rotor, has a hollow hub from which a plurality of blades extend. The hub extends around the rotor and has a front wall and an annular, side wall which surrounds the motor. The side wall of the hub of the fan partially penetrates inside the skirt of the annular support element in the axial direction. 1. Ventilation assembly , for a heat exchanger of a motor vehicle , comprising:a stationary load-bearing structure, including an outer frame and an inner support element connected to the frame by means of a plurality of spokes, the support element having a skirt;an electric motor, including an inner stator fixed to the annular support element of the load-bearing structure and an outer rotor which extends around the stator; anda fan, fixed to the rotor of the motor and having a hollow hub from which a plurality of blades extend; the hub and having a front wall and a side wall which extends around the rotor of the motor,wherein the skirt of the support element and the side wall of the hub partially penetrate one inside the other in the axial direction.2. The ventilation assembly of claim 1 , wherein the side wall of the hub of the fan extends radially inside the skirt of the support element of the stationary load-bearing structure.3. The ventilation assembly of claim 1 , wherein the side wall of the hub of the fan and the skirt of the support element have respective wall extensions made of molded plastic.4. The ventilation assembly of claim 1 , wherein the electric motor is a brushless motor.5. The ventilation assembly of claim 1 , wherein the inner support element is annular and the ...

MULTI-SEGMENT TURBOCHARGER BEARING HOUSING AND METHODS THEREFOR

A turbocharger () including a rotating assembly () having a compressor wheel () and a turbine wheel () mounted on opposite ends of a shaft (). A bearing housing () supports the rotating assembly () and comprises at least two segments (). Each segment () has an opening large enough to radially receive the rotating assembly (). The bearing housing segments () are fastened () together and a flexible seal may be provided between the segments. The bearing housing () may house rolling element bearings () or journal bearings (), for example. The bearing housing () is split axially () into an upper segment () and a lower segment (). Alternatively, the bearing housing () is split axially () into a left segment and a right segment. The turbocharger () may further comprise an electric motor stator () disposed in the bearing housing (). The bearing housing () may also include a defined passageway () extending around the stator () and configured to receive a cooling liquid. 1102202302. A turbocharger ( , , ) , comprising:{'b': 114', '214', '314', '120', '220', '320', '110', '210', '310', '112', '212', '312, 'a rotating assembly (, , ) including a compressor wheel (, , ) and a turbine wheel (, , ) disposed on opposite ends of a shaft (, , ); and'}{'b': 160', '260', '360', '114', '214', '314', '189', '190', '289', '290', '389', '390', '175', '114', '214', '314, 'a bearing housing (, , ) configured to support the rotating assembly (, , ) comprising at least two segments (, ; , ; , ), wherein each segment has an opening () sized to receive the rotating assembly (, , ).'}2102202302160260360101201301189289389190290390. The turbocharger ( claim 1 , claim 1 , ) of claim 1 , wherein the bearing housing ( claim 1 , claim 1 , ) is split axially ( claim 1 , claim 1 , ) into an upper segment ( claim 1 , claim 1 , ) and a lower segment ( claim 1 , claim 1 , ).3102202302160260360101201301. The turbocharger ( claim 1 , claim 1 , ) of claim 1 , wherein the bearing housing ( claim 1 , claim 1 , ) ...