ПЛАНЕТАРНАЯ РОТОРНАЯ ОБЪЕМНАЯ МАШИНА

Изобретение относится к объемным машинам, а именно к вакуумным насосам, компрессорам. Машина содержит ротор 1, выполненный в виде некруглого колеса с внешними зубьями, статор 2, выполненный в виде некруглого колеса с внутренними зубьями, взаимодействующие со статором 2 и ротором 1 круглые плавающие сателлиты 3, неподвижные торцовые стенки 4 и 5, а также систему каналов подвода и отвода 7 и 12 рабочей среды. Центроиды ротора 1 и статора 2 имеют одинаковое число участков верхнего выстоя сателлитов 3, являющихся окружностями максимального радиуса, столько же участков нижнего выстоя сателлитов 3, являющихся окружностями минимального радиуса, и расположенные между ними переходные участки, обеспечивающие плавный переход от максимального радиуса к минимальному. Угловая протяженность каждого переходного участка центроид задана определенным интервалом. Угловая протяженность каждого участка минимального радиуса равна угловой протяженности каждого участка максимального радиуса и задана определенным соотношением. Средняя центробежная сила инерции, действующая на сателлит 3, зависит определенным образом от максимальной силы давления среды на сателлит 3. Изобретение направлено на повышение степени сжатия рабочей среды. 5 з.п. ф-лы, 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 746 939 C1 (51) МПК F01C 1/14 (2006.01) F04C 18/14 (2006.01) F04C 25/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F01C 1/14 (2020.08); F04C 18/14 (2020.08); F04C 25/02 (2020.08) (21)(22) Заявка: 2020106688, 13.02.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Волков Глеб Юрьевич (RU), Фадюшин Денис Вячеславович (RU) Дата регистрации: 22.04.2021 (45) Опубликовано: 22.04.2021 Бюл. № 12 2 7 4 6 9 3 9 R U (54) ПЛАНЕТАРНАЯ РОТОРНАЯ ОБЪЕМНАЯ МАШИНА (57) Реферат: Изобретение относится к объемным машинам, расположенные между ними переходные участки, а именно к вакуумным насосам, компрессорам. обеспечивающие плавный ...

Zahnradpumpe mit mindestens zwei in Eingriff stehenden flüssigkeitsgedichteten Zahnrädern

УСТРОЙСТВО КОМПРЕССОРА ИЛИ ВАКУУМНОГО НАСОСА, СИСТЕМА ВОЗВРАТА ЖИДКОСТИ ДЛЯ ТАКОГО УСТРОЙСТВА КОМПРЕССОРА ИЛИ ВАКУУМНОГО НАСОСА И СПОСОБ СЛИВА ЖИДКОСТИ ИЗ РЕДУКТОРА ТАКОГО УСТРОЙСТВА КОМПРЕССОРА ИЛИ ВАКУУМНОГО НАСОСА

Изобретение относится к устройству компрессора или вакуумного насоса с системой возврата жидкости, содержащей основной корпус с множеством впусков и выпусков, при этом один из впусков находится в соединении по текучей среде с редуктором. Устройство компрессора или вакуумного насоса с впрыском жидкости с элементом (2) компрессора или вакуумного насоса с впрыском жидкости, которое содержит систему (7) возврата жидкости, двигатель (4) для приведения в действие элемента (2) компрессора или вакуумного насоса, редуктор (3), предусмотренный между двигателем (4) и элементом (2) компрессора или вакуумного насоса с впрыском жидкости, и резервуар (5) сепаратора жидкости в соединении по текучей среде с выпуском (6) элемента (2) компрессора или вакуумного насоса с впрыском жидкости. Система (7) возврата жидкости содержит основной корпус (8) с камерой, в которой первый поток (11) сжатого газа из резервуара (5) сепаратора жидкости и второй поток (15) текучей среды из редуктора (3) смешиваются вместе для ...

Compression refrigeration machine having a spindle compressor

The invention relates to a spindle compressors without operating fluid in the working chamber, comprising a 2-tooth spindle rotor (2) and a 3-tooth spindle rotor (3) in a surrounding compressor housing (8) and having preferably non-parallel axes of rotation of the two spindle rotors, in particular for use in compression refrigeration machines. According to the invention, in order to improve the efficiency while providing flexible power adaptation, a multi-stage spindle compressor (1) whose compressor housing (8) and whose spindle rotors (2 and 3) are cooled by means of a partial-flow branch-off (25) of liquid refrigerant (39) from the main refrigerant circuit (24) is used as a refrigerant compressor, wherein the compressor housing (8) is cooled in a controlled manner by means of refrigerant evaporation (9), the refrigerant vapor subsequently being fed to the inlet (10), and, for power adaptation, there are, in addition to the inlet feed (11), also post-inlet feeds (12) into the working ...

MULTISTAGE PUMP BODY AND MULTISTAGE GAS PUMP

A multistage pump body comprises a first pumping chamber (20) and a second pumping chamber (21). A connecting duct (26a) puts an outlet (27) of the first pumping chamber (20) into communication with an inlet (28) of the second pumping chamber (21). A leaktight conduit (40) is provided for the circulation of a cooling liquid. The connecting duct (26a) is a lateral duct of the multistage pump body. A heat-conducting wall (33) partially delimits the connecting duct (26a) and has an external surface (34) on the outside. At least one portion of the connecting duct (26a) passes between this external surface (34) of the heat-conducting wall (33) and the leaktight conduit (40).

Gears ventilator working like compressed-air engine

Rotary device

OIL-INJECTED VACUUM PUMP ELEMENT

Oil-injected vacuum pump element, whereby two cooperating helical rotors (3) are rotatably provided in a housing (2), whereby this housing (2) comprises an inlet port (8) and an outlet end face (6) with an outlet port (9), whereby compression chambers (11a, lib) are formed between the helical rotors (3) and the housing (2), characterised in that the vacuum pump element (1) is provided with a connection that extends from a first compression chamber (11a) to a second smaller compression chamber (lib) at the outlet end face (6), whereby this first compression chamber (11a) is at a lower pressure than the second compression chamber (lib) and whereby this second compression chamber (lib) can make connection with the outlet port (9) upon rotation of the helical rotors (3), whereby the connection is such that a flow from the second compression chamber (lib) to the first compression chamber (11a) is possible, whereby the connection is not directly connected to the outlet port (9).

THERMODYNAMIC SYSTEMS INCLUDING GEAR TYPE MACHINES FOR COMPRESSION OR EXPANSION OF GASES AND VAPORS

... 2105296 9215774 PCTABS00016 Actual thermodynamic processes occuring in a system such as a heat pump or refrigeration plant are made to approach theoretical ideal processes, e.g. an isothermal (T0), by use of a multistage gear machine (1) as compressor and/or expander in the system, and conditioning, such as cooling, the system working fluid between sucessive stages in the machine. The individual stages of the gear machine each consists of a pair of meshing gears (I-IV), preferably cylindrical spur gears of equal diameter and diminishing width from stage to stage.

OIL-INJECTED VACUUM PUMP ELEMENT

Oil-injected vacuum pump element, whereby two cooperating helical rotors (3) are rotatably provided in a housing (2), whereby this housing (2) comprises an inlet port (8) and an outlet end face (6) with an outlet port (9), whereby compression chambers (11a, lib) are formed between the helical rotors (3) and the housing (2), characterised in that the vacuum pump element (1) is provided with a connection that extends from a first compression chamber (11a) to a second smaller compression chamber (lib) at the outlet end face (6), whereby this first compression chamber (11a) is at a lower pressure than the second compression chamber (lib) and whereby this second compression chamber (lib) can make connection with the outlet port (9) upon rotation of the helical rotors (3), whereby the connection is such that a flow from the second compression chamber (lib) to the first compression chamber (11a) is possible, whereby the connection is not directly connected to the outlet port (9).

ROTOR ASSEMBLIES HAVING RADIAL DEFORMATION CONTROL MEMBERS

The disclosure provides a gear pump rotor assembly that includes a rotor body, a rotor head having a plurality of gear teeth and being connected to the rotor body, at least one connector extending between the rotor body and the rotor head, at least one radial deformation control member that extends into at least one gear tooth of the rotor head and reduces the radial deformation of the rotor head relative to the rotor body when a change in temperature causes radial deformation of the rotor body and rotor head. 1. A gear pump rotor assembly comprising:a rotor body;a rotor head having a plurality of gear teeth and being connected to the rotor body;at least one connector extending between the rotor body and the rotor head;at least one radial deformation control member that extends into at least one gear tooth of the rotor head, wherein the at least one radial deformation control member reduces the radial deformation of the rotor head relative to the rotor body when a change in temperature causes radial deformation of the rotor body and rotor head.2. The gear pump rotor assembly of wherein the at least one radial deformation control member also is one of the at least one connectors extending between the rotor body and the rotor head.3. The gear pump rotor assembly of wherein the at least one connector extends forward from the rotor body and is received by the rotor head.4. The gear pump rotor assembly of wherein the at least one connector is received within at least one cavity in a forward end of the rotor body.5. The gear pump rotor assembly of wherein the at least one connector is integrally formed with the rotor body.6. The gear pump rotor assembly of wherein the at least one connector extends rearward from the rotor head and is received by the rotor body.7. The gear pump rotor assembly of wherein the at least one connector is received within at least one cavity in a rearward end of the rotor head.8. The gear pump rotor assembly of wherein the at least one connector ...

OIL-INJECTED VACUUM PUMP ELEMENT

Oil-injected vacuum pump element, whereby two cooperating helical rotors (3) are rotatably provided in a housing (2), whereby this housing (2) comprises an inlet port (8) and an outlet end face (6) with an outlet port (9), whereby compression chambers (11a, lib) are formed between the helical rotors (3) and the housing (2), characterised in that the vacuum pump element (1) is provided with a connection that extends from a first compression chamber (11a) to a second smaller compression chamber (lib) at the outlet end face (6), whereby this first compression chamber (11a) is at a lower pressure than the second compression chamber (lib) and whereby this second compression chamber (lib) can make connection with the outlet port (9) upon rotation of the helical rotors (3), whereby the connection is such that a flow from the second compression chamber (lib) to the first compression chamber (11a) is possible, whereby the connection is not directly connected to the outlet port (9).

Oil-injected vacuum pump element

An oil-injected vacuum pump element, where two mating helical rotors are rotatably provided in a housing, where this housing includes an inlet port and an outlet end face with an outlet port, where compression chambers are formed between the helical rotors and the housing. The vacuum pump element is provided with a connection that extends from a first compression chamber to a second smaller compression chamber at the outlet end face, where this first compression chamber is at a lower pressure than the second compression chamber and where this second compression chamber can make connection with the outlet port upon rotation of the helical rotors, where the connection is such that a flow from the second compression chamber to the first compression chamber is possible, where the connection is not directly connected to the outlet port.

Pneumatic or oil gear motor or pump

... 1,000,999. Gear pumps and motors. G. DUSTERLOH FABRIK FUR BERGWERKSBEDARF G.m.b.H. May 31, 1963 [June 9, 1962], No. 21874/63. Heading F1F. To reduce noise in a pneumatic or hydraulic gear pump or motor having intermeshing gears 3, 4, Fig. 2, supported by bearing members 2, the walls of the bearing members facing the gears are formed with pairs of milled grooves 5 and 6, 7 and 8 where the gears intermesh. Such grooves being connected to the inlet of the pump or motor. The width of a pair of grooves is equal to the height of a tooth, the lengths of the grooves in a direction parallel to the tangent to the pitch circles of the gears at the point of contact is equal to twice the pitch of the gear teeth and as shown in Fig. 3, the grooves increase in depth from their ends towards mid-length.

Gear Pump

In a gear pump, a gear chamber is defined in a housing hole of a housing. A pair of gears is housed in the gear chamber. The gears are rotatably supported at support holes of a pair of side plates via support shafts. As viewed in an axial direction of the support shafts during rotation of the gears, addendum circles of the gears displaced under a differential pressure between a low-pressure chamber and a high-pressure chamber form first contact points with respect to an inner peripheral surface that defines a housing hole. As viewed in the axial direction of the support shafts during rotation of the gears, the first contact points are covered with the side plates displaced under the differential pressure. 1. A gear pump comprising:a housing having a housing hole;a pair of side plates disposed in the housing hole so as to face each other such that a gear chamber is defined between the side plates, each of the side plates having a pair of support holes; anda pair of gears disposed in the gear chamber so as to be meshed with each other, the gears being rotatably supported by the side plates via support shafts inserted into the support holes, whereinwhen the gear pump is viewed in an axial direction of each of the support shafts during rotation of the gears, a low-pressure chamber and a high-pressure chamber that is higher in pressure than the low-pressure chamber are defined inside the gear chamber, with a meshing position interposed between the low-pressure chamber and the high-pressure chamber, the meshing position being a position at which the gears are meshed with each other,an addendum circle of each of the gears that are displaced under a differential pressure between the low-pressure chamber and the high-pressure chamber forms a first contact point with respect to an inner peripheral surface that defines the housing hole in which the gears are housed, andthe first contact point is covered with the side plates that are displaced under the differential pressure.2. ...

Dry-type claw type vacuum pump

Compressed-air gears engine

CLAW PUMP

提供一种爪泵，即使在作为真空泵而在真空度高的范围中使用的情况下也能够防止泵室过热并能够进一步提高泵效率。具备由缸体部(10a)、一端壁部(10b)及另一端壁部(10c)形成的泵室(10)、两个旋转轴(20A、20B)、以压缩吸入的气体并能够排出的方式形成有钩形的爪部的两个转子(30A、30B)、在一端壁部(10b)与另一端壁部(10c)中的至少某一部位且在面向泵室(10)内压缩气体的部位的位置上开口而设置的排气侧开口部(50)，该排气侧开口部(50)通过在气体的压缩比最大化的前级与泵室(10)的外部连通的前级通气口(51)、以包括气体的压缩比相比于上述前级最大化的阶段而向泵室(10)的外部进行排气的方式连通的后级排气口(52)而设置。

GEAR PUMP WITH END PLATES OR BEARINGS HAVING SPIRAL GROOVES

A gear pump includes a housing, at least one gear set and a plurality of end plates. The gear set may be positioned between the end plates so that side surfaces of the gears face corresponding side surfaces of the end plates. The side surfaces of the end plates may have a plurality of spiral grooves positioned directly adjacent the side surface of the gears. The plurality of spiral grooves may have a logarithmic shape. Thus arranged, when the gears rotate, fluid in the pump is forced along the lengths of the spiral grooves, creating a local high pressure region that forces fluid between the side surfaces of the gears and the end plates, minimizing or eliminating contact therebetween. In some embodiments the plurality of spiral grooves may be positioned on bearing surfaces of the pump instead of end plates. 1. A gear pump , comprising:a housing;a drive gear and a driven gear, the drive gear and the drive gear each having gear side surfaces; andfirst and second end plates having plate side surfaces, the plate side surfaces each including a plurality of spiral grooves disposed opposite the gear side surfaces.2. The gear pump of claim 1 , wherein the first and second end plates each has a central opening for receiving a drive shaft and a first opening for receiving an arbor claim 1 , the drive gear coupled to the drive shaft and the driven gear engaged with the drive gear to rotate the driven gear about the arbor claim 1 , wherein the plurality of spiral grooves includes a first groove region positioned adjacent the central opening and a second groove region positioned adjacent the first opening.3. The gear pump of claim 2 , wherein the plurality of spiral grooves of the first groove region have first ends positioned a first distance from the central opening claim 2 , thereby forming a circumferential dam around the central opening.4. The gear pump of claim 2 , wherein the plurality of spiral grooves of the second groove region have first ends positioned a first ...

Multistage pump body and multistage gas pump

A multistage pump body comprises a first pumping chamber (20) and a second pumping chamber (21). A connecting duct (26a) puts an outlet (27) of the first pumping chamber (20) into communication with an inlet (28) of the second pumping chamber (21). A leaktight conduit (40) is provided for the circulation of a cooling liquid. The connecting duct (26a) is a lateral duct of the multistage pump body. A heat-conducting wall (33) partially delimits the connecting duct (26a) and has an external surface (34) on the outside. At least one portion of the connecting duct (26a) passes between this external surface (34) of the heat-conducting wall (33) and the leaktight conduit (40).

Compressor of gas fluids

Gear pump à with at least two toothed wheels gearing one with the other and with sealing ensured by a liquid

THERMODYNAMIC SYSTEMS INCLUDING GEAR TYPE MACHINES FOR COMPRESSION OR EXPANSION OF GASES AND VAPORS

Actual thermodynamic processes occuring in a system such as a heat pump or refrigeration plant are made to approach theoretical ideal processes, e.g. an isothermal (T0), by use of a multistage gear machine (1) as compressor and/or expander in the system, and conditioning, such as cooling, the system working fluid between sucessive stages in the machine. The individual stages of the gear machine each consists of a pair of meshing gears (I-IV), preferably cylindrical spur gears of equal diameter and diminishing width from stage to stage.

Compressor

EGR PUMP SYSTEM AND CONTROL METHOD OF EGR PUMP

A method of operating an exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit lined to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target (step SI), wherein when the motor speed is within the predetermined target then; determining if a motor torque is within a predetermined target (step S) wherein when the motor torque is within the predetermined target then; determining if a motor temperature is within a predetermined target (step S) wherein when the motor temperature is within the predetermined target then; maintaining operation of the exhaust gas recirculation pump. 1. A method of operating exhaust gas recirculation pump for an internal combustion engine comprising:providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine;providing an EGR control unit linked to the EGR pump assembly;providing sensors linked to the EGR control unit;{'b': '1', 'determining if a motor speed is within a predetermined target in step S wherein when motor speed=predetermined target then;'}{'b': '2', 'determining if a motor torque is within a predetermined target in step S wherein when motor torque=predetermined target then;'}{'b': '3', 'determining if a motor temperature is within a predetermined target in step S wherein when motor temperature=predetermined target then;'}maintaining operation of the exhaust gas recirculation pump.214. The method of operating exhaust gas recirculation pump of wherein the step of determining the motor speed S includes determining that the motor speed is not equal to the predetermined target and then including the step S of determining whether a motor ...

Pump

Vacuum screw pump with male 12 and female 14 rotors the male rotors lobes 16 which interlock with the grooves 18 on the female rotor, the lobes and grooves have symmetrical cross sections, with each helix extending through at least 360 degrees about their respective centres of rotation, where the male rotor has a plural number of n lobes balanced about a male centre of rotation A1, where n is at least 2 and the female rotor has n+1 grooves balanced about a female centre of rotation A2. The screw pump may be a dry Quimby mechanism, where the lobe curvature is equal to the curvature of the stator and may extend through approximately 20 degrees around the centre of rotation. A separate apparatus is also claimed where the male rotor has a plural number of n lobes, where n is at least 3 and the female rotor has n-1 grooves, a Lysholm mechanism.

진공 펌프

... (과제) 펌프 로터의 동기 어긋남이 발생한 경우라도 펌프 로터끼리가 접촉하는 것을 억제할 수 있는 간소한 구조의 진공 펌프를 실현한다. (해결 수단) 진공 펌프(1000)는, 대향하여 배치된 한 쌍의 펌프 주축(310, 410)과, 상기 한 쌍의 펌프 주축(310, 410)에 설치된 한 쌍의 펌프 로터(312, 412)와, 상기 한 쌍의 펌프 주축(310, 410)에 설치되고, 자석의 이자극을 대향시켜 직접 자기 커플링을 형성하는 한 쌍의 모터 로터(110, 210)와, 상기 한 쌍의 펌프 주축(310, 410)에 설치되고, 상기 한 쌍의 펌프 로터(312, 412)의 동기를 취하기 위한 한 쌍의 기어(380, 480)를 구비한다.

Gear pump drive gear stationary bearing

One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film location annularly between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad location on the stationary journal bearing adjacent the fluid film location. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 31.0° and a maximum trailing edge angular location on the stationary journal bearing of 43.0°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.

Gear pump with end plates or bearings having spiral grooves

A gear pump includes a housing, at least one gear set and a plurality of end plates. The gear set may be positioned between the end plates so that side surfaces of the gears face corresponding side surfaces of the end plates. The side surfaces of the end plates may have a plurality of spiral grooves positioned directly adjacent the side surface of the gears. The plurality of spiral grooves may have a logarithmic shape. Thus arranged, when the gears rotate, fluid in the pump is forced along the lengths of the spiral grooves, creating a local high pressure region that forces fluid between the side surfaces of the gears and the end plates, minimizing or eliminating contact therebetween. In some embodiments the plurality of spiral grooves may be positioned on bearing surfaces of the pump instead of end plates.

Hydraulic driving installation

Pressluftanlage, bei welcher der Auspuff des Pressluftwerkzeuges in einen durch den Presslufterzeuger dauernd unter Unterdruck gehaltenen Raum geleitet wird

Compressor or expander

THERMODYNAMIC SYSTEMS INCLUDING GEAR TYPE MACHINES FOR COMPRESSION OR EXPANSION OF GASES AND VAPORS

Pump

Rotary device

Roots blower rotor end face sealing structure

ROTARY PUMP WITH ADJUSTABLE GAP FROM ROTOR BY USING LIFTING CYLINDER

The purpose of the present invention is to provide a rotary pump with an adjustable gap from a rotor by using a lifting cylinder. The present invention is developed by demand for development of the rotary pump having a new structure instantly correcting an interval between a rotor and a casing in a site without replacing the rotary pump to prevent unavoidable abrasion of the rotor to continuously perform a work. The present invention can control the interval from the rotor by using a lifting cylinder easily controlling the interval between the rotor and the casing without opening the casing. COPYRIGHT KIPO 2016 ...

EGR PUMP SYSTEM AND CONTROL METHOD OF EGR PUMP

A method of operating exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit linked to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target in step S 1 wherein when motor speed=predetermined target then; determining if a motor torque is within a predetermined target in step S 2 wherein when motor torque=predetermined target then; determining if a motor temperature is within a predetermined target in step S 3 wherein when motor temperature=predetermined target then; and maintaining operation of the exhaust gas recirculation pump.

Umlaufverdichter oder Pumpe bzw. Motor vom Schraubenraedertyp

THREE COUPLES TYPE IMPROVED MODEL IRREGULARITY ARC ROTOR PUMP

The present invention relates to a positive displacement rotation type (by operation of timing gear) pump and, specifically, to a three couples type improved model irregularity arc rotor pump. When a hard foreign substance (t) rotates while being inserted between a protrusion unit (D) of a rotor and a pump inner wall (N) in an existing three coupled type irregularity arc rotor pump (Fig. 23), the foreign substance is tightly inserted between the pump inner wall and the protrusion unit of the rotor by performing a role of a wedge. Therefore, a rotation force of the rotor is remarkably reduced, and a corresponding part is rapidly worn out. Also, a life of a device is reduced. To solve a problem of the present invention, the three coupled type improved model irregularity arc rotor pump is manufactured by using a main shaft rotor (1) and a driven shaft rotor (1′) in which the shape of a plane is formed to be symmetric to that of the main shaft rotor. The main shaft rotor (1) has a mixing protrusion ...

Een compressor- en/of vacuümpompinrichting, een vloeistofterugvoersysteem voor zulke compressor- en/of vacuümpompinrichting en een werkwijze voor het afvoeren van vloeistof uit een tandwielkast van een dergelijke compressor- en/of vacuümpompinrichting

Helical blade type compressor with thrust loss compensation

A piston is eccentrically arranged in a cylinder along its axial direction and can be rotated relative to the cylinder. Part of the piston is in contact with the cylinder's inner surface. First and second helical grooves are formed in the piston's outer surface and separated at its central portion, the pitches of the grooves being gradually increased from both end portions to the center portion of the piston. First and second blades are inserted in first and second grooves so as to be moved in and out of the grooves with the outer edges of the blades contacting the inner surface. The blades partition a space between the cylinder and the piston into a plurality of operation chambers with volumes corresponding to the gradual pitch increases.

Pump i.e. rotary vane pump, for conveying e.g. fluid, has housing body and/or feeding body comprising region, which is provided for contact with fluid, formed with carbon fiber reinforced silicon carbide material

The pump (10) has a pump housing body (20) comprising a feed chamber (21), and a feeding body (30) movably controlled in the feed chamber for feeding fluid (F) from an inlet (22) to an outlet (23) for the feed chamber. A region, which is provided for contact with the fluid, of the housing body and/or the feeding body is formed with a carbon fiber reinforced silicon carbide material. An outer wall region of the housing body surrounds an inner wall region of the housing body, and a carrier body (31) is rotatable around a rotation axis.

Thermodynamic systems including gear type machines for compression or expansion of gases and vapors

GAS COMPRESSOR

A gas compressor includes a compression mechanism, a separator tank that introduces lubricating oil to be supplied to the compression mechanism and a mixed fluid of a working fluid and the lubricating oil discharged from the compression mechanism and separates the lubricating oil, an oil cooler that cools the lubricating oil from the separator tank, an oil circulation path that supplies the cooled lubricating oil to the compression mechanism, and a motor that drives the compression mechanism and is isolated from the oil circulation path. Further, the gas compressor includes a suction temperature sensor that detects a suction temperature of the working fluid, a discharge pressure sensor that detects a discharge pressure of the compressed working fluid, a rotation speed sensor that detects a rotation speed of the motor, and a lubricating oil state estimation unit that estimates a temperature of the lubricating oil based on the detected suction temperature, discharge pressure, and rotation speed of the motor, in which the lubricating oil state estimation unit estimates a deterioration state of the lubricating oil based on the estimated temperature of the lubricating oil.

Druckluftzahnradmotor

쌍원통 펌프

본 발명은 한 쌍의 크랭크형 제1 및 제2 편심축을 회전시킴에 있어 타원 편심기어가 아닌 보통의 클리어런스(clearance)를 가지는 정원의 기어인 크기와 편심량이 동일한 복수 개의 편심기어에 의해 동력전달이 이루어지도록 함에 따라 소음과 진동을 최소화하면서 펌핑(pumping) 시 축간거리를 일정하게 유지할 수 있도록 함은 물론 동력전달구조를 콤팩트(compact)하게 구축할 수 있도록 쌍원통 펌프의 제1,2 편심축을 구동시키는 동력전달계는 제1,2 편심축의 각 회전축부에 장착되는 각각의 편심기어 및 상기 각각의 편심기어 사이에 개재되는 적어도 두 개 이상의 보조 편심기어를 포함하되, 상기 각각의 편심기어 및 보조 편심기어는 동일선상에 맞물려 배치되고 동일 크기와 동일 편심량을 가지는 정원의 편심기어인 것을 포함하는 쌍원통 펌프를 제공한다. 그에 따라 구동에 따른 소음을 저감시키는 효과는 물론 펌핑 효율성을 향상시키는 효과와 함께 전체적인 부피를 줄일 수 있을 뿐만 아니라 제조원가도 절감할 수 있는 효과도 가진다.

Spindelverdichter

Die Erfindung bezieht sich auf trockenverdichtende 2-Wellen-Rotations-Verdrängermaschinen zur Förderung und Verdichtung von Gasen für Anwendungen im Vakuum und im Überdruck. Um Wirkungsgrad und Kompressionsvermögen zu verbessern, wird erfindungsgemäß vorgeschlagen, dass das gegensinnig von einer äußeren Synchronisation drehwinkeltreu angetriebene Rotorpaar aus einem 2-zähnigen Spindelrotor (2) und einem 3-zähnigen Spindelrotor (3) besteht mit vielfacher Umschlingung, wobei die Spindelrotore mit hoher Drehzahl betrieben werden und beide Spindelrotore mehrere Kreisbogen-Abschnitte und zykloidenförmige Profilflanken aufweisen, die beim 2-zähnigen Spindelrotor (2) vorwiegend oberhalb seines Wälzkreises (6) sowie konvex und beim 3-zähnigen Spindelrotor (3) vorwiegend unterhalb seines Wälzkreises (7) und konkav sind, wobei das Arbeitskammer-Volumen zwischen Einlass (18) und Auslass (19) abnimmt, indem am Rotorpaar die Spindelsteigung m(z) vom Einlass (18) zum Auslass (19) abnimmt und/oder die ...

SPINDLE COMPRESSOR

A spindle rotor pair of a spindle compressor has a two-toothed spindle rotor and a three-toothed spindle rotor meshing the other without contact. The wrap angle related to the two-toothed spindle rotor is at least 800 angular degrees. A range of at least 30 m/sec is achieved as the mean circumferential speed of the rotor head. In the transverse section, both spindle rotors have arc sectors and cycloid profile contour flanks. In the case of the two-toothed spindle rotor, they are primarily above its gear-tooth pitch circle and of convex design, however, in the case of the three-toothed spindle rotor, they are below its ear-tooth pitch circle and of concave, i.e., hollow, design. Preferably, the transverse sections of each spindle rotor are symmetrical in a way that in each transverse section, the centre of gravity of the profile surfaces comes to lie on the respective rotor pivot point.

Zahnradpumpe

Magnetically controlled valve and pump devices and methods of using the same

Disclosed herein are embodiments of magnetically controlled valve and pump systems that can be used to control and facilitate fluid flow in fluidic devices. Various types of magnetically controlled valves and pumps are described as well as methods of magnetically-controlling such valves and pumps.

Kompressionsanlage

Kompressionsanlage. dadurch gekennzeichnet, dass zwei endlose Förderbänder, 1, (2) und (2a) Luft, (7)(7)(7), in einen geschlossenen Behälter, (1)(1a)(1b), und 2 (14) bringen.

Anti-staggering three-impeller shaft and mated gear

Three-axis modular dry vacuum pump

... 本发明公开了种三轴模块化干式真空泵，包括泵体，泵体内设置有多级泵腔，每级泵腔的侧设置有抽吸端口，每级泵腔的另侧设置有排出端口，相邻前级泵腔的排出端口与相邻后级泵腔的抽吸端口连通；每级泵腔内均设置有中泵轴、第侧泵轴和第二侧泵轴三根平行的泵轴，相邻前级泵腔的各泵轴与相邻后级泵腔的各泵轴对应连接，三根泵轴同速转动且中泵轴与第侧泵轴和第二侧泵轴转动的方向相反；每级泵腔内均设置有成对转子，奇数级泵腔的成对转子分别连接在中间的泵轴和第侧泵轴上，偶数级泵腔的成对转子分别连接在中间的泵轴和第二侧泵轴上。本发明气体流通从前级真空腔到后级真空腔实现顺流，没有折弯，彻底解决了气体不连续的死角。 ...

Combustion engine with feedback gear/rotary pump input

A combustion engine includes a combustion chamber without pistons, wherein combusted and expanded air exiting the combustion chamber flows into a first displacement pump, such as a gear pump or radial vane pump. The displacement pump dnves the load, and, in addition, another smaller second displacement pump, which pressurizes fresh air and introduces same, via a feedback loop, into the combustion chamber. Gas or other burnable fuels are introduced in the combustion chamber, so that continuous fuel burning will occur, after being ignited. The ratio of bigger to the larger pump to the smaller pump is influenced by the percentage of expansion of the air in the combustion chamber. Additional embodiments could include sppng loaded adjustable baffles within the chamber, meandenng walls and protrusions in the feedback loop, and heating the air prior to entry into the feedback loop.

Thermodynamic systems including gear type machines for compression or expansion of gases and vapors

Actual thermodynamic processes occurring in a system such as a heat pump or refrigeration plant are made to approach theoretical ideal processes, e.g. an isothermal (To), by use of a multistage gear machine as compressor and/or expander in the system, and conditioning, such as cooling, the system working fluid between successive stages in the machine. The individual stages of the gear machine each include a pair of meshing gears, preferably cylindrical spur gears of equal diameter and diminishing width from stage-to-stage.

STRUCTURE OF ROTOR CONNECTION OF MULTI-AXIAL MULTI-STAGE ROOTS PUMP

A structure of rotor connection of multi-axial multi-stage roots pump comprises a rotor body, a rotor shaft is arranged on one end face of the rotor body, a sub-shaft cavity is opened in the rotor shaft, and the locating keyways are symmetrically opened on both sides inside the sub-shaft cavity; a sub-shaft is arranged on the other end face of the rotor body, the sub-shafts and the sub-shaft cavities of two adjacent rotor bodies are matched, locating keyways are symmetrically opened on both sides of the sub-shaft, and the keyways are installed and fixed through sub-rotor shaft keys in the locating keyways. The invention overcomes the disadvantages of the prior art, and the first-stage rotor body is limited and fixed by the bearing, while the second-stage rotor body is only radially limited by the bearing in the first-stage rotor body. The rotor shaft on the other side is also fixed and limited by the bearing, so the thermal expansion displacement and thermal stress of the second-stage rotor body are completely independent during operation. The thermal expansion displacement of the first-stage rotor body does not affect the second-stage rotor body, and it can also synchronously drive the second-stage rotor body.

Combustion engine with feedback gear/rotary pump input

SCREW COMPRESSOR INTEGRATED WITH SYNCHRONOUS MOTOR

The present invention relates to a screw compressor and, more specifically, to a screw compressor integrated with a synchronous motor with a simplified structure by not having a coupling and a bearing. The screw compressor comprises: an air end including two gate rotors and a main screw rotating the gate rotor and having a rotation shaft extended; and a synchronous motor comprising a rotor having a shaft hole which the rotation shaft passes through, a stator installed in the outside of the rotor and rotating the rotor by generating magnetism, and a stator coil magnetizing the stator by supplied power by being installed in the stator. The rotation shaft is connected to the shaft hole of the rotor by directly passing through the shaft hole so that a rotation force of the rotor is directly transmitted to the rotation shaft. COPYRIGHT KIPO 2016 ...

SCREW COMPRESSOR

A screw compressor includes a screw rotor, a rotor casing accommodating the screw rotor, and an internal-volume-ratio-adjusting valve capable of changing internal volume ratio. The internal-volume-ratio-adjusting valve includes a valve body movable along an axial direction of the screw rotor and defining a gas-discharge position, and a cylinder containing at least one pressurizing chamber with a cylinder rod and a piston. The cylinder rod is coupled to the valve body and disposed along the axial direction. The piston is fixed inside the pressurizing chamber to the cylinder rod and divides the pressurizing chamber into two pressurizing spaces along the axial direction. The screw compressor further includes a first communication passage connecting one of the two pressurizing spaces with the discharge gas passage, and a second communication passage connecting the other with a just-before-discharge tooth space immediately before a tooth space that communicates with the discharge port. 1. A screw compressor comprising:a screw rotor including a pair of a male rotor and a female rotor;a rotor casing accommodating the screw rotor, the rotor casing having a suction gas passage and a suction port through which a gas is sucked and a discharge port and a discharge gas passage through which the gas is discharged; andan internal-volume-ratio adjusting valve capable of changing an internal volume ratio, a valve body disposed inside the rotor casing, the valve body being movable along an axial direction of the screw rotor and defining a discharge position at which the gas is discharged from tooth spaces formed between the screw rotor and the rotor casing to the discharge port; and', 'a cylinder containing at least one pressurizing chamber and having a cylinder rod and a piston, the cylinder rod being coupled to the valve body and being disposed along the axial direction of the screw rotor, the piston being fixed inside the or each pressurizing chamber to the cylinder rod and ...

Spindelverdichter

Die Erfindung beschreibt einen Spindelverdichter als im Arbeitsraum ohne Betriebsfluid arbeitende 2-Wellen-Rotations-Verdrängermaschine zur Förderung und Verdichtung gasförmiger Fördermedien für Anwendungen im Vakuum und für Anwendungen im Überdruck mit einem gegensinnig von einer äußeren, also außerhalb vom Verdichter-Arbeitsraum gelegenen Synchronisation drehwinkeltreu angetriebenen Spindelrotorpaar in einem umgebenden Verdichtergehäuse mit einem Einlass und einem Auslass für das Fördermedium. Die beiden Spindelrotore werden mit unterschiedlicher Zähnezahl ausgeführt, wobei dieses Spindelrotorpaar aus einem 2-zähnigen Spindelrotor und einem verzahnungsmäßig berührungsfrei eingreifenden 3-zähnigen Spindelrotor besteht mit einem Umschlingungswinkel bezogen auf den 2-zähnigen Spindelrotor von mindestens 800 Winkelgrad, wobei die Spindelrotore mit hoher Drehzahl derart betrieben werden, dass als mittlere Rotorkopf-Umfangsgeschwindigkeit ein Bereich von mindestens 30 m/sec erreicht wird, dass ...

Gear pump

A gear pump includes a pair of gears that meshes with each other, two rotational shafts inserted into the respective gears that rotate together with gears, a pair of side plates arranged adjacent to both side surfaces of the gears, each having two through-holes forming bearings of the two shafts, a seal block that abuts against the pair of side plates and covers a part of the pair of gears, a pump assembly having the gears, the two shafts, the pair of side plates, and the seal block, and a case having a recess to accommodate the pump assembly. A line passing through an arc center of a cylindrical surface inscribed in the facing surface of the case, and parallel to the two shafts, forms a rotating axis. When the pump assembly rotates about the rotating axis, one of the of side plates contacts the inner wall of the case.

VACUUM PUMP

The present invention aims to realize a vacuum pump having a simple structure which can suppress contact between pump rotors even when synchronization between the pump rotors is lost. A vacuum pump (1000) includes: a pair of pump main shafts (310, 410) disposed to face each other; a pair of pump rotors (312, 412) provided on the pair of pump main shafts (310, 410); a pair of motor rotors (110, 210) provided on the pair of pump main shafts (310, 410) and directly forming magnetic coupling by having different magnetic poles of magnets facing each other; and a pair of gears (380, 480) provided on the pair of pump main shafts (310, 410) and serving to synchronize the pair of pump rotors (312, 412). COPYRIGHT KIPO 2016 ...

Zahnradverdichter

MALE AND FEMALE GEAR PUMP

According to the present invention, the present invention has two gears having a pumping function are meshed with each other at a predetermined distance from each other, and rotational power is constantly transmitted from one end of the two pumping gear shafts separated with a tooth of a pumping gear so that the two pumping gears connected to the same shaft rotates accurately while allowing to be pumped, thereby making it possible to reduce friction between teeth of two gears and to secure a space for pumping more flow amount into a space in which teeth of the gears occupied, so that the present invention has an effect of increasing energy efficiency by reducing friction loss while achieving a higher discharge volume effect per rotation than a conventional gear pump. COPYRIGHT KIPO 2017 ...

Combustion engine with feedback gear/rotary pump input

A combustion engine, which is highly efficient, noiseless and lightweight, includes a combustion chamber without pistons. The combusted and expanded air exiting the combustion chamber flows into a displacement pump, such as a gear pump or radial vane pump. The displacement pump drives the load, and, in addition, another smaller displacement pump, which pressurizes fresh air and introduces same, via a feedback loop, into the combustion chamber. Gas or other burnable fuels are introduced in the combustion chamber, so that a continuous fuel burning will occur, after being ignited. The ratio of bigger to the smaller pump is influenced by the percentage of expansion of the air in the combustion chamber. Additional features could be implemented for optimization of performance of the combustion chamber, such as: spring loaded adjustable baffles within the chamber to create desired compression, meandering walls and protrusions in the feedback loop, and heating the air in the smaller pump prior ...

Zahnradluftpumpe fuer Kraftfahrzeuge

진공 펌프 장치

열전도에 의한 펌프 케이싱의 온도 저하를 방지하고, 로터실의 내부를 높은 온도로 유지할 수 있는 진공 펌프 장치를 제공한다. 펌프 케이싱(2)과 모터 하우징(14) 사이에 배치된 사이드 커버(10A)는, 로터실(1)의 단부면을 형성하는 내측벽부(31)와, 내측벽부(31)보다 외측에 위치하는 외측벽부(32)와, 내측벽부(31)와 외측벽부(32) 사이에 위치하는 잘록부(33)를 갖는다. 내측벽부(31), 외측벽부(32) 및 잘록부(33)는 일체 성형물이며, 잘록부(33)는, 내측벽부(31) 및 외측벽부(32)의 단면적보다 작은 단면적을 갖는다.

기어 펌프

... 서로 맞물리는 한 쌍의 기어(4, 5)와, 회전 가능하게 지지되고, 한 쌍의 기어에 삽입되며, 한 쌍의 기어와 함께 회전하는 2개의 축(2, 3)과, 한 쌍의 기어의 양 측면에 인접해서 배치되고, 2개의 축의 베어링이 되는 2개의 관통 구멍을 갖는 한 쌍의 측판(7, 7')과, 한 쌍의 측판과 맞닿고, 한 쌍의 기어의 원주 방향의 일부를 덮는 시일 블록(8)과, 한 쌍의 기어, 2개의 축, 한 쌍의 측판, 및 시일 블록을 구비하는 펌프 조립체(10)와, 펌프 조립체를 수용하는 오목부(12a)를 갖고, 오목부를 형성하는 내벽에 시일 블록과 대향하는 대향면(12b)을 갖는 케이스(12)를 구비하는 기어 펌프(1)로서, 펌프 조립체(10)는, 케이스의 대향면(12b)에 내접하는 원통면의 원호 중심을 통과하며, 2개의 축(2, 3)에 평행한 직선을 회전축으로 하고, 회전축의 둘레에서 회전 가능하게 구속(拘束)되며, 회전축의 둘레에서 회전하면, 한 쌍의 측판의 한쪽이 케이스(12)의 내벽과 접촉한다.

MAGNETICALLY CONTROLLED VALVE AND PUMP DEVICES AND METHODS OF USING THE SAME

Disclosed herein are embodiments of magnetically controlled valve and pump systems that can be used to control and facilitate fluid flow in fluidic devices. Various types of magnetically controlled valves and pumps are described as well as methods of magnetically-controlling such valves and pumps. 1. A device , comprising:an actuating magnet;a magnet substrate comprising a well configured to house the actuating magnet and comprising a first surface and a second surface; anda fluid channel substrate with a first surface and a second surface wherein the first surface of the fluid channel is coupled directly or indirectly to the first surface of the magnet substrate, wherein the fluid channel substrate comprises a fluidic channel, a well fluidly coupled to the fluidic channel, or a combination thereof.2. The device of claim 1 , further comprising a flexible membrane component positioned between the first surface of the magnet substrate and the first surface of the fluid channel substrate.3. The device of claim 1 , wherein the device comprises a plurality of actuating magnets housed in a plurality of wells fabricated in the magnet substrate.4. The device of claim 1 , further comprising one or more spacer substrates coupled to the second surface of the fluid channel substrate or coupled to the second surface of the magnet substrate.5. The device of claim 1 , wherein the fluidic channel is a discontinuous fluidic channel.6. The device of claim 5 , wherein the discontinuous fluidic channel comprises an elevation configured to block fluid flow through the fluidic channel.7. The device of claim 1 , wherein the device comprises a plurality of magnet substrates wherein each magnet substrate comprises a valve actuating magnet claim 1 , a pump actuating magnet claim 1 , or a combination thereof.8. The device of claim 1 , wherein the magnet substrate comprises a plurality of wells configured in a linear or circular array and each well comprises an actuating magnet.9. The device ...

Luftverdichter mit ineinandergreifenden Zaehnen zur Bildung der Arbeitsraeume

COMBUSTION ENGINE WITH FEEDBACK GEAR/ROTARY PUMP INPUT

A combustion engine includes a combustion chamber without pistons, wherein combusted and expanded air exiting the combustion chamber flows into a first displacement pump, such as a gear pump or radial vane pump. The displacement pump dnves the load, and, in addition, another smaller second displacement pump, which pressurizes fresh air and introduces same, via a feedback loop, into the combustion chamber. Gas or other burnable fuels are introduced in the combustion chamber, so that continuous fuel burning will occur, after being ignited. The ratio of bigger to the larger pump to the smaller pump is influenced by the percentage of expansion of the air in the combustion chamber. Additional embodiments could include spπng loaded adjustable baffles within the chamber, meandenng walls and protrusions in the feedback loop, and heating the air prior to entry into the feedback loop.

TRANSMISSION STRUCTURE OF MOTOR CONNECTION OF ROOTS PUMP

A transmission structure of motor connection of roots pump comprises a shaft sleeve, a motor shaft cavity is opened inside the shaft sleeve, and the inner circle of the motor shaft cavity is concentrically meshed with the excircle of the motor shaft; a fixed bolt mounting cavity is opened on the outer surface of the shaft sleeve, a bolt through-hole is opened in the fixed bolt mounting cavity, the shaft sleeve is fixedly connected with the gear seat through a hexagon bolt, and the gear seat and the shaft sleeve rotate synchronously at the same shaft center; a gear is fixedly connected with the gear seat with a bolt, the gear seat is fixed to the pump shaft through a first keyway under the fitting between the first keyway and a first shaft key, and the pump shaft and the motor shaft are coaxially arranged at the center. The utility model overcomes the disadvantages of the prior art, which is convenient to install without wearing parts, not affected by temperature, pressure and external dust; and the structure is simple with compound seal and oil protection function; and when a motor with a motor shaft is selected, only the diameter and keyway of the motor shaft cavity of the part are required to fit the new motor.

COMBUSTION ENGINE WITH FEEDBACK GEAR/ROTARY PUMP INPUT

フィードバッグギアまたは回転ポンプを備える燃焼エンジン

... 燃焼エンジンは、ピストンを有さない燃焼室を含み、燃焼し、膨張した空気は燃焼室を出て、ギアポンプまたはラジアルベーンポンプのような第1の置換ポンプに流入する。置換ポンプは負荷を駆動し、他の小さい第2の置換ポンプは、外気を圧縮し、フィードバックループを介して燃焼室内に外気を送り込む。ガソリン又は他の燃料は燃焼室内に導入され、初期点火の後に燃焼し続ける。小さい方のポンプに対する大きい方のポンプの比率は、燃焼室内の空気の膨張比率に影響を受ける。追加の実施形態は、燃焼室内にバッファの負荷を調節するバネを含むことができる。 ...

Vorrichtung mit einer Zahnradpumpe zur audiologischen Tympanometrie

Vorrichtung zur audiologischen Tympanometrie, umfassend: ein Tympanometergerät (100), das eine integrierte Druckpumpe (110) aufweist, und eine über einen Druckschlauch (210) mit der Druckpumpe (110) verbindbare Ohrsonde (300), mit der im äußeren Gehörgang (410) eines Ohrs (400) definierte Drücke aufgebaut werden können, dadurch gekennzeichnet, dass es sich bei der Druckpumpe (110) um eine Zahnradpumpe handelt.

스핀들 콤프레서를 갖는 압축 냉동기

... 본 발명은 특히 압축 냉동기에 사용을 위해 주변 콤프레서 하우징(8)에서 2-치형 스핀들 로터(2) 및 3-치형 스핀들 로터(3)를 가지며 또한 바람직하게는 2개의 스핀들 로터를 갖는 작동 공간 내에 작동 유체가 없는 스핀들 콤프레서에 관한 것이다. 본 발명에 따르면, 유연한 파워 조정을 제공하면서 효율도를 향상시키기 위해, 다단 스핀들 콤프레서(1)를 냉매 콤프레서로서 사용하고, 그의 콤프레서 하우징(8) 및 스핀들 로터들(2 및 3)을 냉매 주 유동 회로(24)로부터 액체 냉매(39)의 부분 유동 분기(25)를 통해 냉각하고, 상기 콤프레서 하우징(8)이, 냉매 증기가 입구(10)로 연속적으로 공급되면서, 냉매 증발(9)에 의해 제어된 방식으로 냉각되고, 또한 파워 조정을 위해, 주입구(11)에 부가하여 작업 공간으로의 사후 주입구들(post-inlet feeds)(12)과 출구 공간(13)으로부터의 배출구(14)에 부가하여 사전 배출구들(pre-outlet discharges)(15)이 있으며, 그들 각각은 자신의 조정 장치를 구비하는 것을 제안한다.

Klauenpumpe

Als Vakuumpumpe wird eine Klauenpumpe bereitgestellt, die eine Überhitzung der Pumpenkammer verhindern und die Pumpeneffizienz erheblich verbessern kann, selbst wenn sie in einem Bereich mit hohem Vakuumgrad verwendet wird. Eine Pumpenkammer 10, die durch einen Zylinderabschnitt 10 a, einen Stirnwandabschnitt 10 b an einer Seite und einen Stirnwandabschnitt 10 c an der anderen Seite gebildet wird, zwei Rotationswellen 20 A und 20 B und zwei Rotoren 30 A und 30 B, die als Klauen in Hakenform gebildet sind, um das angesaugte Gas verdichten und ablassen zu können, wobei mindestens einer von Stirnwandabschnitt 10 b der einen Seite und Stirnwandabschnitt 10 c derjenige ist, der sich an einer Position in der Pumpenkammer 10 befindet, die dem Abschnitt zugewandt ist, an dem das Gas verdichtet wird, und es ist eine abluftseitige Öffnung 50 angeordnet, die zum Öffnen angeordnet ist, wobei die abluftseitige Öffnung 50 mit der vorderen Lüftungsöffnung 51 der Außenseite der Pumpenkammer 10 im vorderen ...

MULTISTAGE PUMP HOUSING AND MULTISTAGE GAS PUMP

Compression refrigeration machine having a spindle compressor

THERMODYNAMIC SYSTEMS INCLUDING GEAR TYPE MACHINES FOR COMPRESSION OR EXPANSION OF GASES AND VAPORS

Actual thermodynamic processes occuring in a system such as a heat pump or refrigeration plant are made to approach theoretical ideal processes, e.g. an isothermal (T0), by use of a multistage gear machine (1) as compressor and/or expander in the system, and conditioning, such as cooling, the system working fluid between sucessive stages in the machine. The individual stages of the gear machine each consists of a pair of meshing gears (I-IV), preferably cylindrical spur gears of equal diameter and diminishing width from stage to stage.

Triaxial modularized dry type vacuum pump

The invention discloses a triaxial modularized dry type vacuum pump. The triaxial modularized dry type vacuum pump comprises a pump body, wherein a multistage pump cavity is arranged in the pump body; a suction end opening is formed in one side of the pump cavity at each stage; an exhaust end opening is formed in the other side of the pump cavity at each stage; the exhaust end opening of the adjacent front-stage pump cavity communicates with the suction end opening of the adjacent rear-stage pump cavity; a middle pump shaft, a first side pump shaft and a second side pump shaft which are parallel are arranged in the pump cavity at each stage; each pump shaft of the adjacent front-stage pump cavity is in one-to-one correspondence with each pump shaft of the adjacent rear-stage pump cavity; the three pump shafts of the pump cavity at each stage rotate at the same speed, and the first side pump shaft and the second side pump shaft are reverse in rotation direction; paired rotors are arranged ...

FLUID END FOR A HIGH PRESSURE PUMP AND METHODS FOR APPLYING A WEAR-RESISTANT SUBSTANCE TO SAID END

Métodos para mejorar la resistencia a la erosión, corrosión, desgaste por uso y fatiga en bombas de alta presión. Un método incluye proveer un extremo de fluido que comprende un cuerpo que define una cámara de presión en comunicación de fluido con un orificio de émbolo que tiene un émbolo alternativo dispuesto en el mismo, una cavidad de válvula de aspiración definida en el cuerpo y que tiene un conjunto de válvula de entrada dispuesto en la misma que incluye una válvula de aspiración y un asiento de válvula de aspiración y una cavidad de válvula de descarga definida en el cuerpo y que tiene un conjunto de válvula de descarga dispuesto en la misma que incluye una válvula de descarga y un asiento de válvula de descarga y aplicar una sustancia resistente al desgaste en forma directa sobre una superficie de al menos uno de la cámara de presión, el émbolo, la cavidad de válvula de aspiración, la válvula de aspiración, el asiento de válvula de aspiración, la válvula de descarga y el asiento ...

Gear pump

OIL-INJECTED VACUUM PUMP ELEMENT

ROTARY STEAM ENGINE

MULTISTAGE PUMP BODY AND MULTISTAGE GAS PUMP

A multistage pump body comprises a first pumping chamber (20) and a second pumping chamber (21). A connecting duct (26a) puts an outlet (27) of the first pumping chamber (20) into communication with an inlet (28) of the second pumping chamber (21). A leak-tight conduit (40) is provided for the circulation of a cooling liquid. The connecting duct (26a) is a lateral duct of the multistage pump body. A heat-conducting wall (33) partially delimits the connecting duct (26a) and has an external surface (34) on the outside. At least a portion of the connecting duct (26a) passes between this external surface (34) of the heat-conducting wall (33) and the leak-tight conduit (40).

Oil-injected ones vacuum pump element

VOLUMETRIC GEAR MACHINE WITH HELICAL TEETH

Driving Structure of Three-Axis Multi-Stage Roots Pump

A driving structure of a three-axis multi-stage Roots pump comprises a pump body, wherein a gear end cover is mounted at one side of the pump body, an air outlet end moving bearing air sealing unit is mounted on the other side of the pump body, and the bearing end cover is mounted on the pump at the side of the pump body; a driving axis, a first driven axis and a second driven axis are further provided inside the pump body, and the driving axis is connected with the first driven axis and the second driven axis through the gear, respectively; and both ends of the driving axis, the first driven axis and the second driven axis are movably connected to an air inlet end gear mechanical seal driving unit and an air outlet end moving bearing air sealing unit, respectively. The present invention overcomes the deficiencies of the prior art, a fixed bearing limiting unit not only plays a radial supporting role, strengthens the rigidity of an independent axis, but also reduces the diameter of the ...

Oil-injected ones vacuum pump element

Sistema termodinâmico em ciclo fechado

Een compressor- en/of vacuümpompinrichting, een vloeistofterugvoersysteem voor zulke compressor- en/of vacuümpompinrichting en een werkwijze voor het afvoeren van vloeistof uit een tandwielkast van een dergelijke compressor- en/of vacuümpompinrichting

Liquid-Cooled Type Compressor

The present invention effectively cools air in a compression process at a high stage when an oil is supplied at the same pressure at a low stage and the high stage. Provided is a liquid-cooled type compressor including: a liquid-cooled type compressor body; at least one first nozzle; and at least one second nozzle, the at least one first nozzle and the at least one second nozzle each having a plurality of injection ports per nozzle and supplying a refrigerant through the injection ports into an inside of the compressor body, the second nozzle having the injection ports each having a diameter larger than a diameter of each of the injection ports of the first nozzle.

Combustion engine with feedback gear/rotary pump input

A combustion engine, which is highly efficient, noiseless and lightweight, includes a combustion chamber without pistons. The combusted and expanded air exiting the combustion chamber flows into a displacement pump, such as a gear pump or radial vane pump. The displacement pump drives the load, and, in addition, another smaller displacement pump, which pressurizes fresh air and introduces same, via a feedback loop, into the combustion chamber. Gas or other burnable fuels are introduced in the combustion chamber, so that a continuous fuel burning will occur, after being ignited. The ratio of bigger to the smaller pump is influenced by the percentage of expansion of the air in the combustion chamber. Additional features could be implemented for optimization of performance of the combustion chamber, such as: spring loaded adjustable baffles within the chamber to create desired compression, meandering walls and protrusions in the feedback loop, and heating the air in the smaller pump prior ...

GEAR PUMP DRIVE GEAR STATIONARY BEARING

One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film location annularly between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad location on the stationary journal bearing adjacent the fluid film location. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 31.0° and a maximum trailing edge angular location on the stationary journal bearing of 43.0°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad. 1. A gear pump comprising:a drive gear;a gear shaft passing through the drive gear;a stationary journal bearing;a fluid film location annularly between a surface of the stationary journal bearing and a surface of the gear shaft;a hybrid pad location on the stationary journal bearing adjacent to the fluid film location with a minimum leading edge angular location on the stationary journal bearing of 31.0° and a maximum trailing edge angular location on the stationary journal bearing of 43.0°; anda porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.2. The gear pump of claim 1 , wherein the hybrid pad is axially spaced approximately 0.30 inch (0.76 cm) from a face of the drive gear claim 1 , and wherein the hybrid pad has an axial length of approximately 0.675 inch (1.71 cm).3. The gear pump of claim 1 , wherein the fluid film supports a radial load of up to approximately 532 lbf/in(3668 kPa) at or near the hybrid pad.4. The gear pump of claim 3 , wherein the radial load is at an angular location of approximately 47.4°.5. The gear pump of claim 1 , wherein a maximum diametral clearance between the surface of the stationary journal bearing and the surface of the gear shaft is approximately 0.0039 inch (0.00991 cm).6. ...

EGR PUMP SYSTEM AND CONTROL METHOD OF EGR PUMP

Exhaust gas recirculation pump () for an internal combustion engine that includes an electric motor () disposed within a housing (). A Roots device () is coupled to the electric motor () and includes a housing () defining an internal volume () in which rotors () are disposed and are connected to the electric motor (). The electric motor housing () includes a coolant path () formed therein which extends from a coolant inlet () to a coolant outlet (), both coupled to an engine coolant circulation system. The housing includes an oil path () formed therein. The oil path includes an oil inlet () extending to at least one oil outlet (). The oil inlet and outlet are coupled to an engine oil circulation system wherein the oil path () lubricates bearings () and a transmission assembly () of the exhaust gas recirculation pump (). 1. An exhaust gas recirculation pump for an internal combustion engine comprising:an electric motor assembly including an electric motor disposed within an electric motor housing;a roots device coupled to the electric motor, the roots device including a housing defining an internal volume;rotors disposed in the internal volume and connected to the electric motor;wherein the electric motor housing includes a coolant path formed therein, the coolant path including a coolant inlet extending to a coolant outlet, said coolant inlet and outlet coupled to an engine coolant circulation system.2. The exhaust gas recirculation pump of wherein the electric motor housing includes an end plate attached thereon claim 1 , the end plate including end plate inner and outer surfaces.3. The exhaust gas recirculation pump of wherein the end plate includes a coolant inlet slot formed therein extending between the end plate inner and outer surfaces claim 2 , the coolant inlet slot linked to the coolant inlet.4. The exhaust gas recirculation pump of wherein the end plate includes a coolant labyrinth formed on the end plate outer surface claim 2 , the labyrinth extending ...

COMPRESSION REFRIGERATION MACHINE HAVING A SPINDLE COMPRESSOR

The invention relates to a spindle compressor without operating fluid in the working space with a 2-tooth spindle rotor and a 3-tooth spindle rotor in a surrounding compressor housing-and preferably non-parallel rotation axes of the two spindle rotors, in particular for use in compression refrigeration machines. In order to improve the degree of efficiency while providing flexible power adjustment, it is proposed according to the invention that a multi-stage spindle compressor be used as a refrigerant compressor, whose compressor housing and whose spindle rotors are cooled via a partial-flow branch-off of liquid refrigerant from the refrigerant main flow circuit, wherein the compressor housing is cooled in a controlled manner by means of refrigerant evaporation, with the refrigerant vapor being subsequently fed to the inlet, and that, for power adjustment, there are also post-inlet feeds into the working space in addition to the inlet feed, and also pre-outlet discharges in addition to the outlet discharge from the outlet space, each with their own regulating device. 111-. (canceled)12. A compression refrigeration machine comprising a refrigerant main flow circuit , refrigerant located in the refrigerant main flow circuit , and a spindle compressor for conveying and compressing gaseous delivery media , the spindle compressor having a working space and being configured as a 2-shaft rotation compressor machine which operates without operating fluid in the working space and having a 2-tooth spindle rotor , a 3-tooth spindle rotor and a compressor housing which surrounds the spindle rotors and has an inlet space and an outlet collecting space ,wherein the spindle compressor is a multi-stage spindle compressor, the refrigerant main flow circuit has a partial-flow branch-off, and the compressor housing and the spindle rotors are cooled via the partial-flow branch-off with liquid refrigerant from the refrigerant main flow circuit.13. The compression refrigeration machine ...

GEAR PUMP

A gear pump has a pump body, a pump cylinder connected with the pump body, a driving gear and a driven gear meshed with each other and disposed in the pump cylinder, and a motor driving the driving gear through a driving shaft. The pump cylinder is located between the pump body and the motor. The driving gear is mounted to or integrally formed with the driving shaft. A first bearing and a second bearing are disposed on respectively sides of the driving gear, one end of driving shaft is received in the first bearing, and the other end of the driving shaft extends through the second bearing and into the motor and forms a shaft of the motor. 1. A gear pump comprising:a pump body;a pump cylinder connected with the pump body;a driving gear and a driven gear meshed with each other and disposed in the pump cylinder;a motor driving the driving gear; anda driving shaft, the driving gear being mounted to or integrally formed with the driving shaft and rotatably supported by a first bearing and a second bearing respectively disposed on opposite sides of the driving gear,wherein the pump cylinder is disposed between the pump body and the motor, one end of driving shaft is received in the first bearing, and the other end of the driving shaft extends through the second bearing and into the motor to form a shaft of the motor.2. The gear pump of claim 1 , wherein the pump body has a driving shaft hole claim 1 , the first bearing is received in the driving shaft hole claim 1 , a washer made of wear-resistant and/or high temperature resistant material is disposed between the pump body and an end surface of the driving gear claim 1 , the washer defines a through hole claim 1 , and the driving shaft passes through the through hole of the washer.3. The gear pump of claim 1 , wherein the pump cylinder forms a first shaft hole claim 1 , the second bearing is received in the first shaft hole claim 1 , a washer made of wear-resistant and/or high temperature resistant material is disposed ...

SPINDLE COMPRESSOR

A spindle rotor pair of a spindle compressor has a two-toothed spindle rotor and a three-toothed spindle rotor meshing the other without contact. The wrap angle related to the two-toothed spindle rotor is at least 800 angular degrees. A range of at least 30 m/sec is achieved as the mean circumferential speed of the rotor head. In the transverse section, both spindle rotors have arc sectors and cycloid profile contour flanks. In the case of the two-toothed spindle rotor, they are primarily above its gear-tooth pitch circle and of convex design, however, in the case of the three-toothed spindle rotor, they are below its ear-tooth pitch circle and of concave, i.e., hollow, design. Preferably, the transverse sections of each spindle rotor are symmetrical in a way that in each transverse section, the centre of gravity of the profile surfaces comes to lie on the respective rotor pivot point. 123-. (canceled)24. A spindle compressor operating in a working chamber without operating fluid medium as a two-shaft rotary displacement machine to convey and compress gaseous media for vacuum pressure and positive pressure applications , the spindle compressor comprises a spindle rotor pair driven true to the rotational angle and counter-rotating with an external synchronization arrangement outside the compressor's working chamber in a surrounding compressor housing with an inlet and a discharge outlet for the conveying medium , wherein the two spindle rotors are designed with a different number of teeth: one two-toothed spindle rotor and one three-toothed spindle rotor meshing the other without contact , with a wrap angle related to the two-toothed spindle rotor of at least 800 angular degrees , whereby the spindle rotors rotate at high speed such that a range of at least 30 msec is reached as the rotor head's mean circumferential speed , that both spindle rotors in the transverse section are provided with arc sectors and with cycloid profile contour flanks which in the two-toothed ...

COMPRESSOR WITH A CLOSED LOOP WATER COOLING SYSTEM

The present disclosure provides a compressor system having at least one fluid compressor for compressing a working fluid. A lubrication supply system is operable for supplying lubrication fluid to the compressor. A closed loop cooling system using R718 refrigerant is provided to cool the working fluid. The closed loop cooling system includes a refrigerant compressor for compressing the refrigerant, a condenser operable for receiving compressed refrigerant gas and removing heat to form liquid refrigerant, and an expansion device for expanding and cooling the liquid refrigerant into a cooled gaseous refrigerant. 1. A compressor system comprising:at least one fluid compressor for compressing a working fluid;a lubrication supply system operable for supplying lubrication fluid to the compressor; a refrigerant compressor for compressing a refrigerant;', 'a condenser operable for receiving compressed refrigerant gas and removing heat to form a liquid refrigerant;', 'an expansion device for expanding and cooling the liquid refrigerant into a cooled gaseous refrigerant;', 'a heat exchanger in fluid communication with the refrigerant; and', 'wherein the refrigerant is R718 (water)., 'a closed loop cooling system comprising2. The compressor system of claim 1 , wherein the closed loop cooling system is defined by a hermetically sealed refrigerant flowpath such that R718 refrigerant is not removed or replaced in the flowpath during system operation.3. The compressor system of claim 1 , wherein the heat exchanger is in fluid communication with lubrication fluid.4. The compressor system of claim 1 , wherein the heat exchanger is in fluid communication with the working fluid.5. The compressor system of further comprising:a plurality of heat exchangers in fluid communication with the refrigerant.6. The compressor system of further comprising:at least one bypass conduit for bypassing at least one of the plurality of heat exchangers.7. The compressor system of further comprising:at ...

Gear Pump

A gear pump () includes a pair of gears () that meshes with each other, two shafts () that are rotationally supported, inserted into the pair of respective gears, and rotate together with the pair of gears, a pair of side plates (′) that is arranged adjacent to both side surfaces of the pair of gears, and each have two through-holes forming bearings of the two shafts, a seal block () that abuts against the pair of side plates, and covers a part of the pair of gears in a circumferential direction, a pump assembly () having the pair of gears, the two shafts, the pair of side plates, and the seal block, and a case () having a recess () in which the pump assembly is accommodated, and having a facing surface () that faces the seal block on an inner wall forming the recess, in which the pump assembly () has a line passing through an arc center of a cylindrical surface which is inscribed in the facing surface () of the case, and is parallel to two shafts () as a rotating axis, and is hold to be rotatable about the rotating axis, and when the pump assembly rotates about the rotating axis, one of the pair of side plates comes in contact with the inner wall of the case (). 1. A gear pump , comprising:a pair of gears that meshes with each other;two shafts that are rotationally supported, inserted into the pair of respective gears, and rotate together with the pair of gears;a pair of side plates that is arranged adjacent to both side surfaces of the pair of gears, and each have two through-holes forming bearings of the two shafts;a seal block that abuts against the pair of side plates, and covers a part of the pair of gears in a circumferential direction;a pump assembly having the pair of gears, the two shafts, the pair of side plates, and the seal block; anda case having a recess in which the pump assembly is accommodated, and having a facing surface that faces the seal block on an inner wall forming the recess,wherein the pump assembly has a line passing through an arc center ...

Positive displacement gear machine with helical teeth

一种与工作流体相互作用的容积式齿轮机，包括：‑第一齿轮(3)，具有螺旋齿并包括第一齿(31)，该第一齿进而包括彼此相对的第一和第二齿面(311、312)；‑第二齿轮(4)，具有螺旋齿并具有两个相对的齿面，所述第一和第二齿轮(3，4)在啮合区域(2)中能操作地连接；所述第一齿轮与所述第二齿轮的螺旋齿在顶端被截断。在所述啮合区域(2)的一部分处，所述第一齿面和所述第二齿面(311、312)与所述第二齿轮(4)同时接触。

Air compressor or Air expender

본 발명은 공기 압축기 또는 공기 팽창기 에 관한 것이다. 본 발명에서는 케이싱(10)이 외관과 골격을 형성하고, 상기 케이싱(10)의 내부에 설치된 로터(22,24)가 서로 반대방향으로 회전하면서 상기 케이싱(10)에 형성된 흡입구(14)를 통해 유입된 공기를 압축하고 팽창시킨다. 그리고, 상기 흡입구(14)에는 가이드베인(140)이 구비되는데, 상기 가이드베인(140)에는 상기 흡입구(14)의 외측을 향하고 곡면을 이루는 가이드면(142)과, 상기 로터(22,24)에 대응되도록 요입되는 요입부(144)가 형성된다. 이와 같은 본 발명에 의하면 흡입구(14)를 통한 공기의 흐름이 가이드베인(140)에 의해 원활하게 이루어질 수 있어 공기 압축기 또는 공기 팽창기 의 효율이 높아지는 이점이 있다. The present invention relates to an air compressor or an air expander . In the present invention, the casing 10 forms an appearance and a skeleton, and the rotors 22 and 24 installed inside the casing 10 rotate in opposite directions to each other through the inlet 14 formed in the casing 10. Compress and expand the incoming air. In addition, the suction port 14 is provided with a guide vane 140, and the guide vane 140 has a guide surface 142 which forms a curved surface toward the outside of the suction port 14 and the rotors 22 and 24. Concave concave portion 144 is formed so as to correspond to. According to the present invention as described above, the flow of air through the intake port 14 can be made smoothly by the guide vane 140, which has the advantage of increasing the efficiency of the air compressor or the air expander . 에어사이클, 공기 압축기, 공기 팽창기, 가이드베인 Air Cycle, Air Compressor, Air Inflator, Guide Vane

Micro-bubble generation pump

본 발명은 미세기포 발생 펌프에 관한 것으로, 그 목적은 종래의 대형으로 이루어진 미세기포 발생장치를 소형으로 형성하여 가정용 욕조 등에 사용할 수 있도록 하는 미세기포 발생 펌프를 제공함에 있다. 이는 액체흡입구와 공기흡입구를 통해 유입되는 물과 공기를 가압하여 토출구로 토출시키도록 하는 가압펌프와, 상기 가압펌프와 일체로 형성되고, 상기 토출구에서 분사된 기액혼합액이 일정한 압력을 유지하면서 충진되며, 상기 기액혼합액을 미세기포 발생수단이 형성된 미세기포 출구로 토출시켜 미세기포를 형성하도록 하는 가압실을 포함하는 것이다. 가압펌프, 기액혼합액, 미세기포, 가압실

Single-tooth air compressor for fuel cell and design method of rotor of single-tooth air compressor

本发明公开了一种用于燃料电池的单齿空压机及其转子的设计方法，该单齿空压机由主动轴(1)、从动轴(2)、第一级左齿轮单齿转子(9)、第一级右齿轮单齿转子(10)、第二级左齿轮单齿转子(13)和第二级右齿轮单齿转子(14)组成。所提出的齿轮单齿转子的端面型线的各段曲线光滑连接。在啮合过程中，一对单齿转子的端面型线能够实现逐点连续啮合。采用连接线、齿顶圆弧和齿底圆弧代替了常用的节圆圆弧，既满足在工作过程中，两个齿轮单齿转子和气缸之间所形成的封闭容积逐渐减小，具有内压缩过程，又提高了密封性能，能够有效减小工质通过间隙从高压侧工作腔泄漏至低压侧工作腔，显著的提高了单齿空压机的容积效率。

Two-vane rotor assembly of roots vacuum pump

本发明提供了一种罗茨真空泵的二叶式转子组件，属于真空泵技术领域。它解决了现有罗茨真空泵获得的压缩比较低等技术问题。本罗茨真空泵的二叶式转子组件包括两个端面型线相同的转子，转子的端面型线由相同的四段型线段组成，相邻型线段镜像设置，相邻型线段之间均平滑过渡，每个型线段均为平滑的曲线，每个型线段均由依次连接的齿顶圆弧段、外圆弧段、共轭曲线段和齿根圆弧段组成，齿顶圆弧段和齿根圆弧段均为圆弧线，齿顶圆弧段的圆心和齿根圆弧段的圆心重合，齿顶圆弧段对应的圆心角和齿根圆弧段对应的圆心角相同均为α。本发明具有使得罗茨真空泵获得较高的压缩比的优点。

Double-tooth rotor compressor rotor profile, double-tooth rotor and compressor

本发明公开了一种双齿转子压缩机转子型线及双齿转子和压缩机，阴转子型线的基本啮合曲线包括依次连接的摆线ab、齿底圆弧bc、线段cd、销齿圆弧de和齿顶圆弧ef；阳转子型线的基本啮合曲线包括依次连接的摆线AB、齿顶圆弧BC、直线共轭曲线段CD、销齿圆弧DE和齿底圆弧EF。本发明双齿转子压缩机转子型线采用销齿圆弧、直线和直线共轭曲线作为齿顶圆弧和齿底圆弧的连接线，转子的曲线构成简单，便于双齿转子压缩机的参数设计；阴、阳转子的齿顶处均具有一段齿顶圆弧，因而齿顶与气缸之间为线接触密封，大大降低了压缩机的内泄漏量。阳转子型线上存在较长的齿底圆弧EF，使得压缩机在排气过程中，实际的排气通流面积更大。

Volumetric gear machine with helical teeth

A volumetric gear machine interacting with a working fluid comprising: - a first toothed wheel (3) with helical teeth comprising a first tooth (31) in turn comprising a first and a second flank (311, 312) opposite each other; - a second toothed wheel (4) with helical teeth having two opposite flanks, the first and the second wheel (3, 4) being operatively coupled in a meshing area (2). At a portion of the meshing area (2), the first and the second flank (311, 312) being in simultaneous contact with the second wheel (4).

Egr pump system and control method of egr pump

Exhaust gas recirculation pump (30) for an internal combustion engine that includes an electric motor (32) disposed within a housing (36). A Roots device (38) is coupled to the electric motor (32) and includes a housing (40) defining an internal volume (42) in which rotors (44) are disposed and are connected to the electric motor (32). The electric motor housing (36) includes a coolant path (48) formed therein which extends from a coolant inlet (58) to a coolant outlet (78), both coupled to an engine coolant circulation system. The housing includes an oil path (108) formed therein. The oil path includes an oil inlet (110) extending to at least one oil outlet (112). The oil inlet and outlet are coupled to an engine oil circulation system wherein the oil path (108) lubricates bearings (100) and a transmission assembly (46) of the exhaust gas recirculation pump (30).

Fluid machinery

Oil spout vacuum pump element

喷油真空泵元件，其中，两个配合的螺旋转子(3)可旋转地设置在外壳(2)中，外壳(2)包括入口端口(8)和具有出口端口(9)的出口端面(6)，压缩腔室(11a，1ib)在螺旋转子(3)与外壳(2)之间形成，其特征在于，真空泵元件(1)具有在出口端面(6)处自第一压缩腔室(11a)延伸至较小的第二压缩腔室(1ib)的连接部；第一压缩腔室(11a)处在比第二压缩腔室(1ib)低的压力下；第二压缩腔室(1ib)随螺旋转子(3)转动能与出口端口(9)连接；连接部应使得能自第二压缩腔室(1ib)流动至第一压缩腔室(11a)；连接部不直接连接至出口端口(9)。

Helical blade type compressor

내용 없음. No content.

Oil spout vacuum pump element

喷油真空泵元件，其中，两个配合的螺旋转子(3)可旋转地设置在外壳(2)中，外壳(2)包括入口端口(8)和具有出口端口(9)的出口端面(6)，压缩腔室(11a，1ib)在螺旋转子(3)与外壳(2)之间形成，其特征在于，真空泵元件(1)具有在出口端面(6)处自第一压缩腔室(11a)延伸至较小的第二压缩腔室(1ib)的连接部；第一压缩腔室(11a)处在比第二压缩腔室(1ib)低的压力下；第二压缩腔室(1ib)随螺旋转子(3)转动能与出口端口(9)连接；连接部应使得能自第二压缩腔室(1ib)流动至第一压缩腔室(11a)；连接部不直接连接至出口端口(9)。

Screw compressor

A screw compressor according to some embodiments includes a screw rotor, a rotor casing accommodating the screw rotor, and an internal-volume-ratio-adjusting valve capable of changing internal volume ratio. The internal-volume-ratio-adjusting valve includes a valve body movable along an axial direction of the screw rotor and defining a gas-discharge position, and a cylinder containing at least one pressurizing chamber with a cylinder rod and a piston. The cylinder rod is coupled to the valve body and disposed along the axial direction. The piston is fixed inside the pressurizing chamber to the cylinder rod and divides the pressurizing chamber into two pressurizing spaces along the axial direction. The screw compressor further includes a first communication passage connecting one of the two pressurizing spaces with the discharge gas passage, and a second communication passage connecting the other with a just-before-discharge tooth space immediately before a tooth space that communicates with the discharge port.

Air compressor, air expender and oil cooling system using this

본 발명은 공기 압축기, 공기 팽창기 및 이를 이용한 오일냉각시스템에 관한 것이다. 본 발명은 케이싱(110) 내부에서 서로 반대방향으로 회전하면서 공기의 압축과 팽창을 수행하는 제1 및 제2로터(122,124)를 포함하여 구성된다. 그리고, 제1 및 제2로터(122,124)는 구동축(120)과 종동축(120')에 각각 연결되고 상기 구동축(120)과 종동축(120')은 케이싱(110)에 설치되는 기어박스(119) 내부의 구동기어(121) 및 종동기어(121')가 맞물림에 따라 상대회전된다. 이때, 상기 기어박스(119)에는 외부와 연통되는 오일유입구(151)와 오일토출구(161)가 구비되어 기어챔버(119') 내부의 오일은 상기 오일유입구(151)와 오일토출구(161)를 통해 기어박스(119) 내외부로 순환된다. 이와 같은 본 발명에 의하면, 공기 압축기, 공기 팽창기의 기어박스(119) 내부에서 기어(121,124) 사이의 윤활역할을 하는 오일이 기어박스(119)의 내외부로 순환되면서 냉각될 수 있어, 상기 기어박스(119) 및 이를 구비한 공기 압축기, 공기 팽창기가 냉각되고, 결과적으로 공기 압축기, 공기 팽창기의 작동효율이 향상되는 이점이 있다. The present invention relates to an air compressor, an air expander and an oil cooling system using the same. The present invention comprises first and second rotors (122, 124) for compressing and expanding air while rotating in opposite directions in a casing (110). The first and second rotors 122 and 124 are connected to the drive shaft 120 and the driven shaft 120 'respectively and the drive shaft 120 and the driven shaft 120' The driving gear 121 and the driven gear 121 'in the main body 119 are rotated relative to each other. At this time, the gear box 119 is provided with an oil inlet 151 and an oil outlet 161 communicating with the outside, so that oil in the gear chamber 119 'flows through the oil inlet 151 and the oil outlet 161 And is circulated inside and outside the gear box 119 through the gear box 119. According to the present invention as described above, the oil that functions as a lubricant between the gears 121 and 124 in the gear box 119 of the air compressor and the air expander can be cooled while being circulated to the inside and the outside of the gear box 119, The air compressor and the air expander having the air compressor 119 and the air compressor are cooled, and as a result, the operating efficiency of the air compressor and the air expander is improved. 공기 압축기, 공기 팽창기, 기어박스, 오일냉각 Air compressor, air expander, gear ...

Structure for feeding oil of gear compressor

본 발명은 기어 압축기의 오일 공급구조에 관한 것으로, 본 발명은 저면에 오일이 채워진 밀폐 용기와, 실린더와, 상기 실린더의 내부에 회전 가능하게 삽입되는 외측 기어와, 상기 외측 기어의 내부에 삽입되어 그 외측 기어와 함께 접촉되어 다수개의 압축 공간을 형성하는 내측 기어와, 상기 실린더의 양측면에 각각 결합되어 상기 압축 공간들을 밀폐시키는 상부 베어링 및 하부 베어링과, 상기 상,하부 베어링에 삽입되어 상기 내측 기어와 결합되는 회전축을 포함하여 구성된 기어 압축기에 있어서, 상기 밀폐 용기 저면의 오일이 상기 회전축을 통해 상기 내측 기어와 그 내측기어와 상대 운동하는 베어링사이에 공급되게 안내하는 오일 유로가 구비된다. 이로 인하여, 상기 회전축의 회전력을 전달받아 회전하는 내측 기어와 그 내측 기어와 상대 운동하는 부품들사이에 오일을 원활하게 공급할 뿐만 아니라 회전축을 지지하는 베어링에 오일을 원활하게 공급할 수 있도록 한 것이다. The present invention relates to an oil supply structure of a gear compressor, and the present invention relates to a sealed container filled with oil on a bottom surface, a cylinder, an outer gear rotatably inserted into the cylinder, and inserted into the outer gear. An inner gear in contact with the outer gear to form a plurality of compression spaces, an upper bearing and a lower bearing coupled to both sides of the cylinder to seal the compression spaces, and inserted into the upper and lower bearings and the inner gear inserted therein. In a gear compressor including a rotary shaft coupled to the oil compressor, an oil flow path for guiding oil of the bottom surface of the sealed container is supplied between the inner gear and the inner gear and a bearing moving relative to the inner shaft through the rotary shaft. Because of this, it is possible to smoothly supply oil to the bearing supporting the rotating shaft as well as to smoothly supply the oil between the inner gear that rotates by receiving the rotational force of the rotary shaft and the parts moving relative to the inner gear.

Three-shaft modularized dry vacuum pump

本发明公开了一种三轴模块化干式真空泵，包括泵体，泵体内设置有多级泵腔，每级泵腔的一侧设置有抽吸端口，每级泵腔的另一侧设置有排出端口，相邻前级泵腔的排出端口与相邻后级泵腔的抽吸端口连通；每级泵腔内均设置有中泵轴、第一侧泵轴和第二侧泵轴三根平行的泵轴，相邻前级泵腔的各泵轴与相邻后级泵腔的各泵轴一一对应连接，三根泵轴同速转动且中泵轴与第一侧泵轴和第二侧泵轴转动的方向相反；每级泵腔内均设置有成对转子，奇数级泵腔的成对转子分别连接在中间的泵轴和第一侧泵轴上，偶数级泵腔的成对转子分别连接在中间的泵轴和第二侧泵轴上。本发明气体流通从前级真空腔到后级真空腔实现顺流，没有折弯，彻底解决了气体不连续的死角。

Gear pump

Spindle compressor

Compresor de husillo como máquina de desplazamiento rotativo de 2 ejes que opera sin fluido en la zona de trabajo para la alimentación y compresión de los medios de alimentación gaseiformes para aplicaciones en vacío y para aplicaciones en sobrepresión con un par de rotor de husillo que se conduce en sentido opuesto de forma precisa al ángulo de rotación por medios de sincronización externa, es decir, medios situados fuera de la zona de trabajo del compresor en un cárter del compresor (1) circundante con una entrada (18) y una salida (19) para el medio de alimentación caracterizado por el hecho de que ambos rotores de husillo están configurados con un número de dientes diferente, donde este par de rotor de husillo consta de un rotor de husillo de 2-dientes (2) y un rotor de husillo (3) de 3-dientes que engrana sin hacer contacto en relación al engranaje con un ángulo de estrechamiento con respecto al rotor de husillo 2-dientes de al menos 800 grados de ángulo, donde el rotor de husillo opera con un número de revoluciones alto de tal manera, que como velocidad periférica de cabezal de rotor intermedia se consigue un rango de al menos 30 m/s, que ambos rotores de husillo en la sección de transversal presentan secciones de arco circular (36.K y 36.F, así como 37.K y 37.F) y flancos de contorno de perfil en forma de cicloide (38 y 39), que están configurados en el rotor de husillo de 2-15 dientes (2) sobre todo por encima de su círculo de rodamiento dentado (6) y convexos, y en el rotor de husillo de 3-dientes (3) están configurados sobre todo debajo de su círculo de rodamiento dentado (7) y cóncavo, por lo tanto, hueco y que los cortes de frente de cada rotor de husillo están configurados de forma preferiblemente simétrica, de modo que en cada sección de frente el centroide de la superficie del perfil se encuentra en cada punto de giro de rotor respectivo (M.2 o M.3). Screw compressor as a 2-axis rotary displacement machine operating without fluid in the working area ...

Hydrogen circulation pump for hydrogen fuel cell system

A hydrogen circulation pump for a hydrogen fuel cell system comprises a motor (1), a pump body (2), and a magnetic connection structure (3). The motor (1) has a driving end (11). The pump body (2) has a first camshaft (213). The magnetic connection structure (3) comprises a first magnetic member (31), a magnetically permeable isolation member (32), and a second magnetic member (33). The first magnetic member (31) is connected to the first camshaft (213). The second magnetic member (33) is connected to the driving end (11) of the motor. The second magnetic member (33) is opposite the first magnetic member (31). The magnetically permeable isolation member (32) is connected to the pump body (2) in a sealed manner, and is used to isolate the first magnetic member (31) and the second magnetic member (33). During assembly of the circulation pump of the invention, a sealing ring can be effectively prevented from being scratched or damaged, avoiding hydrogen leakage caused by a damaged sealing member resulting from friction between a rotating transmission shaft and the sealing member, thereby effectively improving sealing performance with respect to hydrogen, and resulting in high safety.

Screw compressor integrated with synchronous motor

본 발명은 스크류 압축기에 관한 것으로서, 상세하게는 커플링과 베어링이 없어 구조가 단순화된 동기모터 일체형 스크류 압축기에 관한 것으로서, 두 개의 게이트로터, 상기 게이트로터를 회전시키고 회전축이 연장 설치된 메인스크류를 포함하는 에어엔드; 상기 회전축이 관통하는 축공이 형성된 회전자와, 상기 회전자의 외부에 설치되어 자력을 발생시켜 상기 회전자를 회전시키는 고정자와, 상기 고정자에 설치되어 공급된 전원에 의해 상기 고정자를 자화시키는 고정자코일로 이루어진 동기모터로 이루어지되, 상기 회전축을 회전자의 축공에 직접 관통시켜 결합하여 회전자의 회전력이 회전축에 직접 전달되게 한 것을 특징으로 한다.

Gear pump

　互いに噛み合う一対のギヤ（４、５）と、回転可能に支持され、一対のギヤに挿入され、一対のギヤと共に回転する２つの軸（２、３）と、一対のギヤの両側面に隣接して配置され、２つの軸の軸受となる２つの貫通穴を有する一対の側板（７、７'）と、一対の側板と当接し、一対のギヤの円周方向の一部を覆うシールブロック（８）と、一対のギヤ、２つの軸、一対の側板、及びシールブロックを備えるポンプ組立体（１０）と、ポンプ組立体を収容する凹部（１２ａ）を有し、凹部を形成する内壁にシールブロックと対向する対向面（１２ｂ）を有するケース（１２）とを備えるギヤポンプ（１）であって、ポンプ組立体（１０）は、ケースの対向面（１２ｂ）に内接する円筒面の円弧中心を通り２つの軸（２、３）に平行な直線を回転軸とし、回転軸の回りに回転可能に拘束され、回転軸の回りに回転すると、一対の側板の一方がケース（１２）の内壁と接触する。

一种冷却系统流程增压装备

本发明公开了一种冷却系统流程增压装备，包括冷却液盖板、前盖板泵、箱体盖板泵、齿轮箱泵组成增压设备壳体，增压设备壳体内部横向贯穿有泵轴；所述前盖板泵与箱体盖板泵之间、齿轮箱泵右端与前盖板泵之间分别形成的各自腔室内均配合有转子，箱体盖板泵右侧壁面与齿轮箱泵左侧内腔壁面上均固定有大齿轮，大齿轮上下均啮合有行星齿轮；所述泵轴中部啮合有托架体，托架体两端通过轴承盖托架固定有行星齿轮，泵轴上左右对称套装有内套筒轴，内套筒轴外固定有外套筒轴，内套筒轴、外套筒轴外部两端分别配合有转子、连杆执行器，连杆执行器一端通过连杆盖固定有连杆，连杆另一端通过连杆盖固定有行星齿轮。本发明适用于冷却系统中的流程增压。

一种冷却系统流程增压泵及增压方法

本发明公开了一种冷却系统流程增压泵，包括泵壳、横向架设于泵壳内的主轴、配合于主轴中部的偏心差速机构、置设于泵壳的转子腔内的转子，偏心差速机构通过外套筒连接靠内的转子、内套筒连接靠外的转子。本发明还公开了基于一种冷却系统流程增压泵的增压方法，包括以下步骤：步骤一：泵壳上的进排气孔通过管路接入冷却系统中，主轴外接增压电机；步骤二：所述主轴外接的增压电机动作，流程增压泵的主轴转动，带动泵壳内部的偏心差速机构运动；步骤三：内部的偏心差速机构将旋转运动输出为两个运动规律不同的转子；步骤四：两个转子的活塞的相对位置改变，活塞在转子腔室发生空间大小的改变，实现增压。本发明适用于冷却系统中的流程增压。

一种冷却系统流程增压泵及增压方法

本发明公开了一种冷却系统流程增压泵，包括泵壳、横向架设于泵壳内的主轴、配合于主轴中部的偏心差速机构、置设于泵壳的转子腔内的转子，偏心差速机构通过外套筒连接靠内的转子、内套筒连接靠外的转子。本发明还公开了基于一种冷却系统流程增压泵的增压方法，包括以下步骤：步骤一：泵壳上的进排气孔通过管路接入冷却系统中，主轴外接增压电机；步骤二：所述主轴外接的增压电机动作，流程增压泵的主轴转动，带动泵壳内部的偏心差速机构运动；步骤三：内部的偏心差速机构将旋转运动输出为两个运动规律不同的转子；步骤四：两个转子的活塞的相对位置改变，活塞在转子腔室发生空间大小的改变，实现增压。本发明适用于冷却系统中的流程增压。

ルーツポンプ

【課題】異物の噛み込みによる損傷を低減させつつ、ポンプ性能の低下を抑制できるルーツポンプを提供すること。【解決手段】ロータ２２の先端部２２ａは、一対のロータ周面２３と、凹設周面２４と、を有する。一対のロータ周面２３の各々は、ロータ室周面２７に対して第１の径方向クリアランスＣＬ１にて対向する。一対のロータ周面２３の各々は、ロータ２２の回転方向Ｒにおいて各々所定の幅を有する。凹設周面２４は、回転方向Ｒにおいて一対のロータ周面２３の間に凹設されている。凹設周面２４は、ロータ室周面２７に対して第１の径方向クリアランスＣＬ１よりも大きな第２の径方向クリアランスＣＬ２にて対向する。凹設周面２４は、ロータ２２の回転時にロータ室２５内の異物Ｄを捕獲する。回転方向Ｒにおいてロータ室周面２７が凹設周面２４と対向する幅Ｗ２は、ロータ室周面２７がロータ周面２３と対向する一対の所定の幅Ｗ１の和よりも広い。【選択図】図３

다단 펌프 본체 및 다단 가스 펌프

다단 펌프 본체는 제1 펌핑 챔버(20) 및 제2 펌핑 챔버(21)를 포함한다. 연결 덕트(26a)는 제1 펌핑 챔버(20)의 유출부(27)를 제2 펌핑 챔버(21)의 유입부(28)와 소통되게 한다. 누설 방지 도관(40)은 냉각 액체의 순환을 위해 제공된다. 연결 덕트(26a)는 다단 펌프 본체의 측방향 덕트이다. 열 전도 벽(33)은 연결 덕트(26a)를 부분적으로 한정하고 외측상에 외부 표면(34)을 가진다. 연결 덕트(26a)의 적어도 일 부분은 열 전도 벽(33)의 외부 표면(34)과 누설 방지 도관(40) 사이에서 통과된다.

Korpus pompy wielostopniowej i wielostopniowa pompa gazowa

나선형 톱니를 갖는 체적 기어 기계

작동 유체와 상호 작용하는 체적 기어 기계로, - 서로 대향하는 제1 및 제2 플랭크(311, 312)를 포함하는 제1 톱니(31)를 포함하는 나선형 톱니를 갖는 제1 톱니 휠(3); - 2개의 대향하는 플랭크를 구비한 나선형 톱니를 갖는 제2 톱니 휠(4)을 포함하며, 제1 및 제2 휠(3, 4)는 맞물림 영역(2)에서 작동 가능하게 연결된다. 맞물림 영역(2)의 일부에서, 제1 및 제2 플랭크(311, 312)는 제2 휠(4)과 동시에 접촉한다.

Screw Compressor and Screw Rotor

In a screw compressor, a lobe profile of cross-sections perpendicular to the axial direction in a female rotor that rotates about a second rotation center changes in the axial direction. One lobe of the lobe profile of the female rotor includes: a first contour line defining a leading flank on a rotation direction side of the female rotor with a lobe bottom as a boundary point; a second contour line defining a trailing flank on an opposite side of the rotation direction; and a third contour line defining a lobe tip having both endpoints at which the female has the maximum radius. In the lobe profile of the female rotor, when a first angle, a second angle, and a third angle are respectively defined as an angle formed by two line segments linking a second rotation center as a vertex and both ends of the first contour line, an angle formed by two line segments linking the second rotation center and both ends of the second contour line, and an angle formed by two line segments linking the second rotation center and both ends of the third contour line, the third angle is greater on the delivery side in the axial direction, and the first angle is smaller on the delivery side in the axial direction.

一种空压机结构

本发明提供一种应用于空压机技术领域的空压机结构，所述的空压机结构的连接板（13）一端与电机（1）连接，连接板（13）另一端与空压机（7）连接，主动齿轮（4）与从动齿轮（10）啮合，主动转子（8）、从动转子（9）与空压机壳体组成气腔，电机（1）、连接板（13）、轴承板（11）以及连接盘（3）、主动齿轮（4）、从动齿轮（10）、轴承板轴承（5）组成油腔，本发明所述的空压机结构，一方面能够阻挡飞溅油滴，另一方面能够有效阻挡油腔内的油气直达泄压孔，并增加油气在油腔内的行程，确保到达泄压孔处的油气极少，再经过泄压孔处的透气阀分离油气，减少油腔内润滑油的泄漏，无需频繁补加润滑油，保障性能和寿命。

一种空压机结构

本发明提供一种应用于空压机技术领域的空压机结构，所述的空压机结构的连接板(13)一端与电机(1)连接，连接板(13)另一端与空压机(7)连接，主动齿轮(4)与从动齿轮(10)啮合，主动转子(8)、从动转子(9)与空压机壳体组成气腔，电机(1)、连接板(13)、轴承板(11)以及内部旋转件连接盘(3)、主动齿轮(4)、从动齿轮(10)、轴承板轴承(5)组成油腔，本发明所述的空压机结构，一方面能够阻挡飞溅油滴，另一方面能够有效阻挡油腔内的油气直达泄压孔，并增加油气在油腔内的行程，确保到达泄压孔处的油气极少，再经过泄压孔处的透气阀分离油气，减少油腔内润滑油的泄漏，无需频繁补加润滑油，保障性能和寿命。

多段ポンプ本体、及びアプリケーションを含む多段ポンプ

一种罗茨鼓风机风叶的制造方法及罗茨鼓风机及曝气增氧装置

本发明涉及一种罗茨鼓风机风叶的制造方法及罗茨鼓风机及曝气增氧装置，风叶薄片是按照罗茨鼓风机风叶断面的形状尺寸制作冲裁模，冲裁模冲裁风叶薄片并冲出轴孔与定位孔；把冲裁的风叶薄片叠装，风叶薄片的两端各有一片风叶厚片夹持中部的风叶薄片；风叶薄片的定位孔与风叶厚片相对的各定位孔分别装有连接杆，连接杆两端与风叶厚片焊接在一起成为风叶；风叶轴孔配上轴加工成带轴风叶，带轴风叶安装在壳体内，动力带动带轴风叶，两带轴风叶由同步齿轮传动同步旋转。本发明由模具冲裁叠装后焊接而成的风叶制造方法使产品制造方便，产品牢固，一致性好，便于组合成不同长度的风叶。本发明还公开了曝气增氧装置及微孔管的制造装置。

一种罗茨真空泵

本发明公开了一种罗茨真空泵，属于罗茨真空泵技术领域，包括外壳，所述外壳内设有第一冷却槽和第二冷却槽，所述外壳上设有进水口和出水口，所述进水口与第一冷却槽相连接，所述出水口与第二冷却槽相连接，所述第一冷却槽和第二冷却槽之间设有转接腔，所述外壳底部设有检修口，所述检修口与转接腔数量相同，且检修口与转接腔相连通，所述检修口上设有检修盖；通过第一冷却槽和第二冷却槽的设置，可以对罗茨真空泵进行降温，避免温度过高导致金属部件受热膨胀，发生金属碰擦，从而出现咬死、抱死现象，出现罗茨真空泵运行故障的问题，同时避免因为过高的温度导致罗茨泵内的轴承使用寿命下降。

组合式油封结构及空压机

本发明提供一种组合式油封结构及空压机，组合式油封结构包括设置在旋转轴上的主油封，旋转轴穿设在壳体的壳体通孔中，壳体通孔与位于壳体内部的油腔相通，组合式油封结构还包括套设于旋转轴外的挡油环和设置在旋转轴上的环形甩油凸起，环形甩油凸起、挡油环、及主油封沿旋转轴的轴向且沿背离油腔方向依次分布。当油腔中的润滑油等沿旋转轴向壳体外部渗漏时，环形甩油凸起会阻挡住润滑油，且环形甩油凸起会将润滑油甩向壳体的壁上，使得润滑油再回流至油腔中；而部分润滑油在进入挡油环处时，也会被挡油环阻挡住，这样在环形甩油凸起及挡油环的作用下，能大量减少进入主油封处的润滑油，从而保证本组合式油封结构的密封性能更好。

一种轴向串列式罗茨真空泵模组

本发明提供一种轴向串列式罗茨真空泵模组，包括一驱动电机，包括一左侧电机主轴；以及至少一罗茨真空泵组，各罗茨真空泵组包括至少一罗茨真空泵，且所有罗茨真空泵组的罗茨真空泵的总数量大于等于两个；其中各罗茨真空泵包括一传动轴，所有的罗茨真空泵的驱动轴与该驱动电机形成串接的型态，使得该驱动电机可同步带动所有的罗茨真空泵的传动轴一起转动。本发明中可将所有罗茨真空泵的吸气口并接到一吸气管道，且所有罗茨真空泵的排气口并接到一排气管道，使所有罗茨真空泵可同步进行吸气、抽真空及排气的作业。或者也可将所有罗茨真空泵的吸气口及排气口形成串接，以使流体可依序通过各个罗茨真空泵而进行多级的抽真空作业。

一种防错位的二叶轮轴及配套齿轮

一种防错位的二叶轮轴及配套齿轮，属于风机零部件制造技术领域，由二叶轮轴、齿轮配合设置构成，齿轮的中心设棱柱形通孔，二叶轮轴包括两只圆筒形的叶轮和一根叶轮轴，两只该叶轮围绕该叶轮轴对称且固定设置，叶轮轴上设固定齿轮的棱柱形台肩位，齿轮的棱柱形通孔套设在该棱柱形台肩位上，能够有效防止齿轮与叶轮轴之间打滑错位情况的发生。

Spindelverdichter

Spindelverdichter als im Arbeitsraum ohne Betriebsfluid arbeitende 2-Wellen-Rotations-Verdrängermaschine zur Förderung und Verdichtung gasförmiger Fördermedien für Anwendungen im Vakuum und für Anwendungen im Überdruck mit einem gegensinnig von einer äußeren, also außerhalb vom Verdichter-Arbeitsraum gelegenen Synchronisation drehwinkeltreu angetriebenen Spindelrotorpaar in einem umgebenden Verdichtergehäuse (1) mit einem Einlass (18) und einem Auslass (19) für das Fördermedium dadurch gekennzeichnet, dass die beiden Spindelrotore mit unterschiedlicher Zähnezahl ausgeführt werden, wobei dieses Spindelrotorpaar aus einem 2-zähnigen Spindelrotor (2) und einem verzahnungsmäßig berührungsfrei eingreifenden 3-zähnigen Spindelrotor (3) besteht mit einem Umschlingungswinkel bezogen auf den 2-zähnigen Spindelrotor von mindestens 800 Winkelgrad, wobei die Spindelrotore mit hoher Drehzahl derart betrieben werden, dass als mittlere Rotorkopf-Umfangsgeschwindigkeit ein Bereich von mindestens 30 m/sec erreicht wird, dass beide Spindelrotore im Stirnschnitt Kreisbogen-Abschnitte (36.K und 36.F, sowie 37.K und 37.F) und zykloidenförmige Profilkonturflanken (38 und 39) aufweisen, die bei dem 2-zähnigen Spindelrotor (2) vorwiegend oberhalb seines Verzahnungs-Wälzkreises (6) und konvex gestaltet sind und beim 3-zähnigen Spindelrotor (3) vorwiegend unterhalb seines Verzahnungs-Wälzkreises (7) und konkav, also hohl, ausgeführt sind, und dass die Stirnschnitte jedes Spindelrotors vorzugsweise symmetrisch gestaltet sind, so dass in jedem Stirnschnitt der Profil-Flächenschwerpunkt auf den jeweiligen Rotor-Drehpunkt (M.2 bzw. M.3) zu liegen kommt.

동기모터 일체형 스크류 압축기

본 발명은 스크류 압축기에 관한 것으로서, 상세하게는 커플링과 베어링이 없어 구조가 단순화된 동기모터 일체형 스크류 압축기에 관한 것으로서, 두 개의 게이트로터, 상기 게이트로터를 회전시키고 회전축이 연장 설치된 메인스크류를 포함하는 에어엔드; 상기 회전축이 관통하는 축공이 형성된 회전자와, 상기 회전자의 외부에 설치되어 자력을 발생시켜 상기 회전자를 회전시키는 고정자와, 상기 고정자에 설치되어 공급된 전원에 의해 상기 고정자를 자화시키는 고정자코일로 이루어진 동기모터로 이루어지되, 상기 회전축을 회전자의 축공에 직접 관통시켜 결합하여 회전자의 회전력이 회전축에 직접 전달되게 한 것을 특징으로 한다.

気体圧縮機

【課題】気体圧縮機内を循環している油の余寿命を安価な手段で知る。【解決手段】気体圧縮機は、圧縮機構部と、圧縮機構部に供給される潤滑油と、圧縮機構部から吐出される作動流体と潤滑油との混合流体を導入して潤滑油を分離するセパレータタンクと、セパレータタンクからの潤滑油を冷却するオイルクーラと、冷却された潤滑油を圧縮機構部に供給する油循環路と、圧縮機構部を駆動すると共に油循環路からは隔離されているモータと、を備える。また、作動流体の吸込温度を検出する吸込温度センサと、圧縮された作動流体の吐出圧力を検出する吐出圧力センサと、モータの回転速度を検出する回転速度センサと、検出された吸込温度、吐出圧力及びモータの回転速度に基づいて、潤滑油の温度を推定する潤滑油状態推定部と、を備え、潤滑油状態推定部は、推定された潤滑油の温度に基づいて潤滑油の劣化状態を推定する。【選択図】図１

螺杆压缩机和螺杆转子

在本发明的螺杆压缩机中，绕第二旋转中心(A2)旋转的阴转子(3)的与轴向垂直的截面的齿形在轴向上存在变化。阴转子(3)的齿形的1个齿包括：以齿底(75s、75d)为边界点，规定阴转子(3)的旋转方向侧的前进面的第一轮廓线(71s、71d)；规定与旋转方向相反的方向一侧的后进面的第二轮廓线(72d、72d)；规定两个端点是最大半径的齿顶部的第三轮廓线(73s、73d)。将以第二旋转中心(A2)为顶点来连结第二旋转中心(A2)与第一轮廓线(71s、71d)的两端的2个线段所成的角、连结第二旋转中心(A2)与第二轮廓线(72d、72d)的两端的2个线段所成的角、连结第二旋转中心(A2)与第三轮廓线(73s、73d)的两端的2个线段所成的角分别定义为第一角度(φLs、φLd)、第二角度(φTs、φTd)、第三角度(φSs、φSd)，在阴转子(3)的齿形中，第三角度(φSs、φSd)在轴向的排出侧较大且第一角度(φLs、φLd)在轴向的排出侧较小。

클로펌프

본 발명은, 진공펌프로서 진공도가 높은 범위에서 사용되는 경우이더라도, 펌프실이 과열되는 것을 방지할 수 있어 펌프효율을 현격하게 향상시킬 수 있는 클로펌프를 제공한다. 실린더부(10a), 일방의 단벽부(10b) 및 타방의 단벽부(10c)로 형성된 펌프실(10)과, 2개의 회전축(20A, 20B)과, 흡입한 기체를 압축하여 배기할 수 있도록 갈고리 모양의 클로부가 형성된 2개의 로터(30A, 30B)와, 일방의 단벽부(10b)와 타방의 단벽부(10c) 중 적어도 어느 하나의 부위로서 펌프실(10) 내에 있어서의 기체가 압축되는 부위와 면하는 위치에 개구되어 형성된 배기측 개구부(50)를 구비하고, 그 배기측 개구부(50)가, 기체의 압축비가 최대화되기 전단에서 펌프실(10)의 외부와 통하는 전단 통기구(51)와, 상기 전단보다 기체의 압축비가 최대화되는 단계를 포함하여 펌프실(10)의 외부와 통하여 배기하도록 하는 후단 배기구(52)에 의하여 형성되어 있다.

一种抗式降噪罗茨鼓风机进气口

本发明涉及罗茨鼓风机技术领域，特别涉及一种抗式降噪罗茨鼓风机进气口，包括底座、叶轮、机壳，所述的机壳内顶部的螺旋进气口连接扩压腔体，所述的扩压腔体的顶部连接圆形气道，所述的扩压腔体内围成扩压腔，所述的扩压腔体从螺旋进气口到圆形气道是逐渐收缩的圆形腔体。本发明的有益效果是：通过在圆形气道和螺旋进气口之间根据抗式消音的原理增加一处扩压腔体，气流从圆形气道进入扩压腔体，经过流道面积的突扩，流速降低，使声波衰减，从而使气体的噪声进一步降低。

一种垂直布局的单螺杆压缩机

本申请涉及压缩机领域，尤其是涉及一种垂直布局的单螺杆压缩机，包括机壳、第一电机、驱动螺杆以及星轮，所述机壳呈竖直设置，所述机壳中固定有分隔板，所述分隔板将所述机壳的内腔划分呈安装腔以及位于安装腔上方的压缩腔，所述第一电机固定在安装腔内，所述驱动螺杆与星轮均转动连接在压缩腔内并相互啮合，所述机壳上还开设有与压缩腔连通的单向进气口与单向出气口，所述驱动螺杆与第一电机的转轴同轴设置，由于整个机壳处于竖直状态，相比于横向放置，在保障正常压缩气体功能的作用下，节省了横向的安装面积。

Transmission structure of motor connection of roots pump

A transmission structure of motor connection of roots pump comprises a shaft sleeve, a motor shaft cavity is opened inside the shaft sleeve, and the inner circle of the motor shaft cavity is concentrically meshed with the excircle of the motor shaft; a fixed bolt mounting cavity is opened on the outer surface of the shaft sleeve, a bolt through-hole is opened in the fixed bolt mounting cavity, the shaft sleeve is fixedly connected with the gear seat through a hexagon bolt, and the gear seat and the shaft sleeve rotate synchronously at the same shaft center; a gear is fixedly connected with the gear seat with a bolt, the gear seat is fixed to the pump shaft through a first keyway under the fitting between the first keyway and a first shaft key, and the pump shaft and the motor shaft are coaxially arranged at the center. The utility model overcomes the disadvantages of the prior art, which is convenient to install without wearing parts, not affected by temperature, pressure and external dust; and the structure is simple with compound seal and oil protection function; and when a motor with a motor shaft is selected, only the diameter and keyway of the motor shaft cavity of the part are required to fit the new motor.

Roots pump

A roots pump includes a housing, a rotor chamber, a pair of rotary shafts, and a pair of rotors. The rotor chamber includes a rotor chamber peripheral surface facing a pair of distal end portions of each of the rotors. Each of the pair of the distal end portions includes: a pair of rotor peripheral surfaces facing the rotor chamber peripheral surface with a first radial clearance; and a distal end peripheral surface that is formed between the pair of the rotor peripheral surfaces in the rotational direction and faces the rotor chamber peripheral surface with a second radial clearance greater than the first radial clearance. A width of the rotor chamber peripheral surface facing the distal end peripheral surface in the rotational direction is greater than a sum of a pair of predetermined widths of the rotor chamber peripheral surface facing the pair of the rotor peripheral surfaces.

Wälzkolbenpumpe

Eine Wälzkolbenpumpe (10) hat ein Gehäuse (11), einen Rotorraum (25), ein Paar von Drehwellen (16) und ein Paar von Rotoren (22). Der Rotorraum (25) weist eine Rotorraumumfangsfläche (27) auf, die einem Paar von distalen Endabschnitten (22a) der jeweiligen Rotoren (22) gegenübersteht. Jeder des Paars der distalen Endabschnitte (22a) hat ein Paar von Rotorumfangsflächen (23), die der Rotorraumumfangsfläche (27) mit einem ersten Radialspalt (CL1) gegenübersteht, und eine distale Stirnumfangsfläche (24), die in der Drehrichtung (R) zwischen dem Paar der Rotorumfangsflächen (23) gebildet ist und der Rotorraumumfangsfläche (27) mit einem zweiten Radialspalt (CL2), der größer als der erste Radialspalt (CL1) ist. Eine Breite (W2) der Rotorraumumfangsfläche (27), die der distalen Stirnumfangsfläche (24) gegenübersteht, in der Drehrichtung (R) ist größer als eine Summe eines Paars von vorgegebenen Breiten (W1) der Rotorraumumfangsfläche (27), die dem Paar der Rotorumfangsflächen (23) gegenübersteht.

罗茨泵

本发明提供能够减少由于异物的咬入而导致的损伤并且能够抑制泵性能的降低的罗茨泵。转子(22)的顶端部(22a)具有一对转子周面(23)和顶端部周面(24)。一对转子周面各自经由第1径向间隙(CL1)与转子室周面(27)对向。一对转子周面各自在转子的旋转方向(R)上分别具有预定的宽度。顶端部周面在旋转方向上设置在一对转子周面之间。顶端部周面经由比第1径向间隙大的第2径向间隙(CL2)与转子室周面对向。顶端部周面在转子旋转时捕获转子室(25)内的异物(D)。在旋转方向上，转子室周面与顶端部周面对向的宽度(W2)比转子室周面与转子周面对向的一对预定的宽度(W1)之和宽。

Roots pump containing rotors that capture and discharge a foreign substance

A roots pump includes a housing, a rotor chamber, a pair of rotary shafts, and a pair of rotors. The rotor chamber includes a rotor chamber peripheral surface facing a pair of distal end portions of each of the rotors. Each of the pair of the distal end portions includes: a pair of rotor peripheral surfaces facing the rotor chamber peripheral surface with a first radial clearance; and a distal end peripheral surface that is formed between the pair of the rotor peripheral surfaces in the rotational direction and faces the rotor chamber peripheral surface with a second radial clearance greater than the first radial clearance. A width of the rotor chamber peripheral surface facing the distal end peripheral surface in the rotational direction is greater than a sum of a pair of predetermined widths of the rotor chamber peripheral surface facing the pair of the rotor peripheral surfaces.

Cuerpo de bomba multietapa y bomba de gas multietapa

Un cuerpo de bomba multietapa comprende una primera cámara de bombeo (20) y una segunda cámara de bombeo (21). Un conducto de conexión (26a) pone en comunicación una salida (27) de la primera cámara de bombeo (20) con una entrada (28) de la segunda cámara de bombeo (21). Se proporciona un conducto estanco (40) para la circulación de un líquido refrigerante. El conducto de conexión (26a) es un conducto lateral del cuerpo de bomba multietapa. Una pared conductora de calor (33) delimita parcialmente el conducto de conexión (26a) y tiene una superficie exterior (34) en el exterior. Al menos una porción del conducto de conexión (26a) pasa entre esta superficie externa (34) de la pared termoconductora (33) y el conducto estanco (40). (Traducción automática con Google Translate, sin valor legal)

Vacuum pump apparatus

A vacuum pump apparatus capable of preventing a decrease in temperature of a pump casing due to heat transfer, and capable of maintaining a high temperature in a rotor chamber is disclosed. A side cover is provided between a pump casing and a motor housing. The side cover includes an inner wall portion forming an end surface of the rotor chamber, an outer wall portion located outwardly of the inner wall portion, and a narrow portion located between the inner wall portion and the outer wall portion. The inner wall portion, the outer wall portion, and the narrow portion are an integrally-formed structure, and the narrow portion has a cross-sectional area smaller than cross-sectional areas of the inner wall portion and the outer wall portion.

健身器材用双向内循环自动补偿液压齿轮油泵系统

本发明涉及一种健身器材用双向内循环自动补偿液压齿轮油泵系统，包括泵前盖和泵后盖，泵前盖和泵后盖之间设有齿轮泵壳，泵前盖中插有主轴，主轴连接传动齿轮轴，传动齿轮轴的一端通过轴承套有泵连接块，传动齿轮轴上套有前泵体和后泵体，传动齿轮轴与从动齿轮轴连接，从动齿轮轴置于泵连接块与泵后盖之间，从动齿轮轴中设有一通孔，泵后盖上开有一进油口，通孔与进油口相通。通过在双向液压齿轮油泵内部增加两个相向的单向阀的结构，使得进油口只能向油泵内部流动，而油泵内部不能向进油口流动，高压区油不会流向油壶处，防止油路中油的流失，油量依旧处于平衡的状态。

Structure of rotor connection of multi-axial multi-stage roots pump

A structure of rotor connection of multi-axial multi-stage roots pump comprises a rotor body, a rotor shaft is arranged on one end face of the rotor body, a sub-shaft cavity is opened in the rotor shaft, and the locating keyways are symmetrically opened on both sides inside the sub-shaft cavity; a sub-shaft is arranged on the other end face of the rotor body, the sub-shafts and the sub-shaft cavities of two adjacent rotor bodies are matched, locating keyways are symmetrically opened on both sides of the sub-shaft, and the keyways are installed and fixed through sub-rotor shaft keys in the locating keyways. The invention overcomes the disadvantages of the prior art, and the first-stage rotor body is limited and fixed by the bearing, while the second-stage rotor body is only radially limited by the bearing in the first-stage rotor body. The rotor shaft on the other side is also fixed and limited by the bearing, so the thermal expansion displacement and thermal stress of the second-stage rotor body are completely independent during operation. The thermal expansion displacement of the first-stage rotor body does not affect the second-stage rotor body, and it can also synchronously drive the second-stage rotor body.

一种同型多爪转子

本发明涉及一种同型多爪转子，属于真空泵设备技术领域。所述的转子型线包括八段曲线组成，按逆时针方向依次为：AB段、BG段、GC段、CD段、DE段、EH段、HF段和FA段；BGC段为曲率单调递增变化的曲线，CD段为曲率单调递增或恒曲率曲线；DE段与A点共耦，AFHE段与BGCD段共耦，BGCD段与AFHE段中心对称。本发明的转子是流线型转子，每爪只有爪头一个内凹，外形配合吸抽气气流的流动向，与气口配合合理。转子的受力均衡，曲率合理，抗冲击性强。

爪泵

提供一种爪泵，即使在作为真空泵而在真空度高的范围中使用的情况下也能够防止泵室过热并能够进一步提高泵效率。具备由缸体部(10a)、一端壁部(10b)及另一端壁部(10c)形成的泵室(10)、两个旋转轴(20A、20B)、以压缩吸入的气体并能够排出的方式形成有钩形的爪部的两个转子(30A、30B)、在一端壁部与另一端壁部中的至少某一部位且在面向泵室内压缩气体的部位的位置上开口而设置的排气侧开口部(50)，该排气侧开口部通过在气体的压缩比最大化的前级与泵室的外部连通的前级通气口(51)、以包括气体的压缩比相比于上述前级最大化的阶段而向泵室的外部进行排气的方式连通的后级排气口(52)而设置。

Způsob provádění kompresního cyklu a zubový nebo šroubový kompresor k provádění tohoto způsobu

V kompresním cyklu v zubovém nebo šroubovém kompresoru se stlačování plynu v pracovním prostoru provádí polytropicky s kompresním poměrem, který se mění podle tlaku plynu ve výtlačném prostoru nebo je v první části provozního rozsahu kompresoru stálý nebo nastavitelný a v další části provozního rozsahu kompresoru se mění podle tlaku plynu ve výtlačném prostoru. Zubový nebo šroubový kompresor obsahuje cestu pro vytlačování stlačeného plynu z pracovního prostoru, která je od pracovního prostoru oddělena nejméně jedním výtlačným ventilem.

一种用于罗茨风机的聚酰亚胺涂层配方及罗茨风机与涂覆工艺

一种用于罗茨风机的聚酰亚胺复合涂层配方及罗茨风机与涂覆工艺，通过在主动叶轮与从动叶轮的表面以及机壳的内壁上涂覆有聚酰亚胺涂层，实现两个叶轮之间的间隙以及叶轮与壳体之间的间隙降低到0‑0.05mm，大大提升了风机效率。该涂层具有耐磨、低摩擦系数、耐腐蚀、耐高温等特点，且涂层与涂层之间的接触是软性的而且摩擦力很小，不会导致金属叶轮骨架因为碰撞而变形或受到外部氧化腐蚀。

EGR pump system and control method of EGR pump

A method of operating exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit linked to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target in step S1 wherein when motor speed=predetermined target then; determining if a motor torque is within a predetermined target in step S2 wherein when motor torque=predetermined target then; determining if a motor temperature is within a predetermined target in step S3 wherein when motor temperature=predetermined target then; and maintaining operation of the exhaust gas recirculation pump.

一种垂直布局的单螺杆压缩机

本申请涉及压缩机领域，尤其是涉及一种垂直布局的单螺杆压缩机，包括机壳、第一电机、驱动螺杆以及星轮，所述机壳呈竖直设置，所述机壳中固定有分隔板，所述分隔板将所述机壳的内腔划分呈安装腔以及位于安装腔上方的压缩腔，所述第一电机固定在安装腔内，所述驱动螺杆与星轮均转动连接在压缩腔内并相互啮合，所述机壳上还开设有与压缩腔连通的单向进气口与单向出气口，所述驱动螺杆与第一电机的转轴同轴设置，由于整个机壳处于竖直状态，相比于横向放置，在保障正常压缩气体功能的作用下，节省了横向的安装面积。

一种地面离心式采油泵

本发明公开了一种地面离心式采油泵，通过真空泵对采油泵内的空气进行真空处理，从而保证泵壳和管内没有多余的空气，该采油泵在、采油之前进行真空处理，可以避免采油过程中气缚现象的发生，解决了以往采油泵采油前必须使泵壳和吸水管内充满液体，并使液体发生离心运动，被甩向挡块外缘后才能进行采油工作的技术问题；通过在支撑座上安装置物槽,并放置第一防护板、第二防护板、第三防护板和第四防护板，对支撑座上的采油设备起到防护和隔离的作用；通过第一固定卡块和第二固定卡块的配合使用，将第二压盖通过第二固定卡块在第一固定卡块内进行左右移动并卡合在支撑座上，提高了第二固定卡块的固定安装效率，方便进行设备的安装和拆卸。

Screw compressor and screw rotor

In a screw compressor, a lobe of a lobe profile of a female rotor includes: a first contour line defining a leading flank; a second contour line defining a trailing flank; and a third contour line defining a lobe tip having both endpoints at which the female has the maximum radius. In the lobe profile, when a first angle formed by two line segments linking a second rotation center as a vertex and both ends of the first contour line, a second angle formed by two line segments linking the second rotation center and both ends of the second contour line, and a third angle formed by two line segments linking the second rotation center and both ends of the third contour line, the third angle is greater on the delivery side in the axial direction, and the first angle is smaller on the delivery side in the axial direction.

健身器材用双向内循环自动补偿液压齿轮油泵系统

本发明涉及一种健身器材用双向内循环自动补偿液压齿轮油泵系统，包括泵前盖和泵后盖，泵前盖和泵后盖之间设有齿轮泵壳，泵前盖中插有主轴，主轴连接传动齿轮轴，传动齿轮轴的一端通过轴承套有泵连接块，传动齿轮轴上套有前泵体和后泵体，传动齿轮轴与从动齿轮轴连接，从动齿轮轴置于泵连接块与泵后盖之间，从动齿轮轴中设有一通孔，泵后盖上开有一进油口，通孔与进油口相通。通过在双向液压齿轮油泵内部增加两个相向的单向阀的结构，使得进油口只能向油泵内部流动，而油泵内部不能向进油口流动，高压区油不会流向油壶处，防止油路中油的流失，油量依旧处于平衡的状态。

真空泵装置

提供一种真空泵装置，其能够防止由热传导造成的泵壳体的温度降低，将转子室的内部维持在高温度。配置在泵壳体(2)与电机壳(14)之间的侧罩(10A)具有形成转子室(1)的端面的内侧壁部(31)、与内侧壁部(31)相比位于外侧的外侧壁部(32)、和位于内侧壁部(31)与外侧壁部(32)之间的缩颈部(33)。内侧壁部(31)、外侧壁部(32)以及缩颈部(33)为一体成形物，缩颈部(33)具有比内侧壁部(31)以及外侧壁部(32)的截面面积小的截面面积。

Vacuum pump apparatus

A vacuum pump apparatus capable of preventing a decrease in temperature of a pump casing due to heat transfer, and capable of maintaining a high temperature in a rotor chamber is disclosed. A side cover is provided between a pump casing and a motor housing. The side cover includes an inner wall portion forming an end surface of the rotor chamber, an outer wall portion located outwardly of the inner wall portion, and a narrow portion located between the inner wall portion and the outer wall portion. The inner wall portion, the outer wall portion, and the narrow portion are an integrally-formed structure, and the narrow portion has a cross-sectional area smaller than cross-sectional areas of the inner wall portion and the outer wall portion.

Kompresor

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一种三轴多级罗茨泵的驱动结构

一种三轴多级罗茨泵的驱动结构，包括泵体，齿轮端盖安装在泵体的侧面，泵体的另一侧安装有排气端移动轴承气封单元，轴承端盖安装在泵体的侧面；泵体内部还设置有主动轴、第一从动轴和第二从动轴，主动轴通过齿轮分别与第一从动轴和第二从动轴传动连接；主动轴、第一从动轴和第二从动轴的两端分别活动连接在进气端齿轮机械密封驱动单元和排气端移动轴承气封单元内。本发明克服了现有技术的不足，通过固定轴承限位单元不仅起到径向的支撑作用，加强了独立轴的刚性，可以减小轴的直径，同时在轴向形变过程中，向两轴端均匀进行，避免单一方向形变，减少了近一半的位移量。同时还提高了系统的密封效率。

Oil box device of a roots vacuum pump with a crossed cooling water tube set

An oil box device of a roots vacuum pump with a crossed cooling water tube set includes an oil box; two root vacuum pump transfer gears placed within the oil box; each gear being axially connected to a respective one of shafts of rotors of a roots vacuum pump; one shaft of the rotors being driven by another one shaft of the rotors; a multiple channel crossed cooling water tube set enclosing the two roots vacuum pump gears; two distal ends of the water tube set being crossed over one another; two water boxes installed at two ends of the water tube set; after assembly, the water tube set enclosing the two gears and two ends of the water tube set being crossed over each other at a lateral side of the two gears; and two joints being installed at a bottom side of the rear cover.

Twin-shaft rotary engine

This engine is provided with two drive shafts carrying rotors provided with lobes and with two smaller shafts carrying rotors provided with lobes for forcing air into the combustion chamber. The combustion chamber is provided with an injector which sprays in fuel supplied by a pump, as well as a nozzle which supplies fresh air under difficult starting conditions and a glow plug which ignites the fuel in the chamber. The shafts are supported in bearings on the outer side of the engine housing. Each drive shaft is provided with a gear mounted on the outer side of the engine housing. The gears are of sufficient size to engage with each other and serve to ensure that the shafts rotate at identical speeds. The air intake shafts are provided with similar gears. A toothed wheel is mounted on one drive shaft aid on one air intake shaft. These toothed wheels are encircled by a chain which drives the air intake shaft from the drive shaft. Special- fuel and Water can be added in the combustion chamber to take away some of the CO 2 .