Entspanner-Verdichter als Ersatz eines Drosselventils einer zwei-phasigen Strömung

Drehkolbenverdichter mit doppelwandig ausgefuehrten Verdichterfluegeln

Improvements in rotary blowers or compressors

... 770,113. Rotary compressors. VENEDIGER H. J. March 2, 1955 [March 15, 1954], No 6102/55. Class 110 (2). A pump of the outwardly-sliding radial or substantially radial vane type comprises two pumping units which are arranged in a common casing about parallel axes and are drivingly interconnected for rotation in opposite directions relative to one another by means of a gear on the driven shaft of one unit engaging a gear on the driving-shaft of the other. The rotors 6, 61 are made of aluminium-silicon alloy and are journalled in cast-iron or steel liners 5, 51 which are cast or shrunk in the stator 1, each rotor consisting of four segments screwed to a flanged shaft 11, 12. The shafts are interconnected by gear-wheels 13, 14 and the shaft 111 or 12 drives a lubricating pump 15. Each rotor contains two one-piece, H-shaped nickelsteel vanes 16, 17. The liners 5, 51 have circular or oval air inlet and outlet passages 19, 20 respectively, see Fig. 1 (not shown), the stator being provided ...

Rotary compressors

... 656,826. Rotary compressors. RONNOCO EXPORT DEVELOPMENT CO., Ltd. Jan. 12, 1949, No. 858. [Class 110(ii)] [Also inGroup XXIV] A sliding-vane compressor has a rotor 8 with a transverse pin 10 in a slot 12, free to move axially between end walls 13,16 and rockable on a spherical driving end of a shaft 7. The ingoing air passes through a filter 19 and channel 20 leading to an inlet 14 and is discharged through a port 15, duct 26 and filter 28 where entrained oil is separated out, the cleaned air being forced out to a line 29. Oil is supplied to channel 20 by suction through a duct 21 from a wick 22 immersed in an oil well 23. Some air is trapped by the vanes 9 beyond the delivery port 15 and used to force oil between the rotor ends and the end walls 13, 16 and also past the vanes into their slots. For rotor balancing purposes a recess 17, in the wall 16, matches the shape of the exhaust port which it faces. A second inlet port 141, connected to the channel 20, ensures that lubricant ...

Sliding vane pump

The pump rotor 4 is eccentrically mounted within a cylindrical housing 1 and has a plurality of radially extending slots 12a, 12b, 12c each accommodating a slidable vane 11a, 11b, 11c which moves under centrifugal force when the rotor 4 rotates, towards the circumferential inner srface of the housing 1. Pins 13 in the vanes 11a, 11b, 11c engage slots (15a), 15b in the axial end walls of the housing to prevent the tips of the vanes from making sliding contact with the facing circumferential inner surface of the housing and thereby reducing wear. Various forms and arrangements of the vane pins and housing slots and also various vane and guide constructions are disclosed.

Supplying lubricant to a lubricant sealed pump

Rotary Compressor

A rotary compressor includes: a compressor body including an airtight container that has a refrigerant intake opening and a refrigerant discharge opening, a refrigerant compression unit that has a cylinder and a rotary piston housed in the cylinder and that is provided in the airtight container, and an electric motor that drives the rotary piston and is provided in the airtight container; and an accumulator configured to separate a refrigerant suctioned into the refrigerant intake opening into gas and liquid. The accumulator and the refrigerant intake opening are connected via a refrigerant intake pipe, a suction opening of the refrigerant intake pipe is arranged to be opened to the inside of the accumulator, an injection pipe for pouring the refrigerant into the rotary compressor is inserted into the accumulator from above, and a discharge opening of the injection pipe is drawn to face the suction opening of the refrigerant intake pipe in a refrigerant gas space of the accumulator. ic ...

PUMPING SYSTEM FOR GENERATING A VACUUM AND METHOD FOR PUMPING BY MEANS OF THIS PUMPING SYSTEM

Système de pompage pour générer un vide (SP), comprenant une pompe à vide principale qui est une pompe à ergots (3) ayant une aspiration d'entrée des gaz (2) reliée à une enceinte à vide (1) et un refoulement de sortie des gaz (4) donnant dans un conduit (5) d'évacuation des gaz vers une sortie d'échappement des gaz (8) hors du système de pompage. Le système de pompage comprend un clapet anti-retour (6) positionné entre le refoulement de sortie des gaz (4) et la sortie d'échappement des gaz (8), et une pompe à vide auxiliaire (7) raccordée en parallèle du clapet anti-retour. La pompe à vide principale (3) est mise en marche afin de pomper les gaz contenus dans l'enceinte à vide (1) et de refouler ces gaz par son refoulement de sortie des gaz (4), simultanément la pompe à vide auxiliaire (7) est mise en marche et continue de pomper tout le temps que la pompe à vide principale (3) pompe les gaz contenus dans l'enceinte à vide (1) et/ou tout le temps que la pompe à vide principale (3) maintient ...

Lagerung des Läufers von Vielzellenkraftmaschinen und Rotationskompressoren, die mit grossem Wärmegefälle arbeiten.

Drehkolbenmaschine.

Rotationskompressor mit Schiebern.

Drehkolben-Vakuumpumpe

Drehkolben-Vakuumpumpe

Einrichtung zur Abdichtung des Verdichtungsraumes von Drehkolbenmaschinen zur Förderung und Verdichtung von Luft und andern Gasen.

Pumpe

Rotationspumpe

Drehkolbenverdichter

Ubersetzungsgetriebe in einer Rotationskolbenvakuumpumpe

Vakuumdrehschieberpumpe

Rotationskolbenvakuumpumpe

Rotationskolbenvakuumpumpe

Rotationskolbenvakuumpumpe

Saturated steam compressor

Die Erfindung ist im unabhängigen Anspruch 1 definiert und beschreibt einen Dampfkompressor (1), bestehend aus einem wasserdichten Mantelrohr einer Mittelfrequenz-Induktionsheizung (2), einem Wärmetauscher-Unterboden (5), und aus einem Flanschanschluss (4) zum Auslass eines Umlaufkolbens zur Erzeugung von Nassdampfdruck (3), integriert in der Gehäusewand des Dampfkompressors (1), wie in der einzigen Figur dargestellt als Aggregat elektrisch vorgeheizt. Der Dampfkompressor (1) wird mit der Mittelfrequenz-Induktionsheizung (2) über den Nassdampfdruck (3) auf einen Betriebsdruck von bis zu 200 bar und auf eine Betriebstemperatur von 380°C vorgeheizt. Das ohne Flammerhitzung vorgeheizte Aggregat definiert die Aggregatzustandsänderung adiabatisch im thermoisolierten Dampfkompressor (1), bei konstanter, isobarer Wärmespeicherkapazität von 380°C reversibel im Clausius-Rankine-Prozess.

Wet steam compressor e.g. for transmission, has waterproof jacket pipe for mid-frequency induction heater with heat exchanger provided under base and flange connects to discharge opening of rotating piston

The steam compressor (1) has a waterproof jacket pipe for a mid-frequency induction heater (2). A heat exchanger is provided under a base (5) and a flange connects (4) to a discharge opening of a rotating piston for supplying generated steam pressure (3) and integrated in a housing of the steam compressor. The waterproof jacket pipe is an integrated component of the inner wall steam compressor.

Compressing apparatus of air also which can be used as suction and force pump

Improvements in the rotary apparatuses of aspiration and compression

Method of pumping in a system of vacuum pumps and system of vacuum pumps

The present invention relates to a pumping method in a pumping system (SP, SPP) comprising: a main lubricated rotary vane vacuum pump (3) with a gas inlet port (2) connected to a vacuum chamber (1) and a gas outlet port (4) leading into a conduit (5) before coming out into the gas outlet (8) of the pumping system (SP, SPP), a non-return valve (6) positioned in the conduit (5) between the gas outlet port (4) and the gas outlet (8), and an auxiliary lubricated rotary vane vacuum pump (7) connected in parallel to the non-return valve (6). According to this method, the main lubricated rotary vane vacuum pump (3) is activated in order to pump the gases contained in the vacuum chamber (1) through the gas outlet port (4), simultaneously the auxiliary lubricated rotary vane vacuum pump (7) is activated and continues to operate all the while that the main lubricated rotary vane vacuum pump (3) pumps the gases contained in the vacuum chamber (1) and/or all the while that the main lubricated rotary ...

Fluid machine for vehicle

A fluid machine for a vehicle includes a rotary shaft, an electric motor having a coil, a drive circuit, and a housing having therein a motor chamber and a circuit chamber. The housing includes a partitioning wall partitioning between the motor chamber and the circuit chamber and a peripheral wall extending from the partitioning wall. The partitioning wall and the peripheral wall form the circuit chamber. The drive circuit includes a circuit board having a surface and an electronic component mounted on the surface of the circuit board. A connecting terminal is disposed extending through the partitioning wall and electrically connecting the coil with the drive circuit. A mounting lug is formed extending from the peripheral wall so as to mount the housing to the vehicle. The electronic component, the connecting terminals and the mounting lug are disposed in this order in the radial direction of the rotary shaft.

Orbiting rotary compressor

An orbiting rotary-type compressor (10) including an orbiting cylindrical piston assembly (28), sealing members, cylinder housing (26), Oldham ring assembly (72) and motor for permitting orbital movement of the piston. Sealing is achieved by vanes (110, 118, 156, 168) sliding within slots in the cylinder housing which are sealingly biased toward orbiting piston member by means of springs. An axial compliance and a radial compliance mechanism (92) promotes proper sealing. ...

СПОСОБ РАБОТЫ РОТОРНО-ЛОПАСТНОЙ МАШИНЫ (ВАРИАНТЫ) И РОТОРНО-ЛОПАСТНАЯ МАШИНА

Группа изобретений относится к области машиностроения. Способ работы роторно-лопастной машины заключается в преобразовании энергии рабочего тела в энергию механического вращения вала и/или придания дополнительной энергии потоку рабочего тела. Используют более чем один контур движения потока, по крайней мере, один из которых образован полостью, ограниченной внутренней поверхностью корпуса 1, ротором 2 и лопастями 3, а другой - внутренней поверхностью ротора 2 и лопастями 3, с возможностью вывода потока из каждого контура для промежуточного преобразования потока и возврата потока для дальнейшего преобразования. Изобретение направлено на повышение эффективности использования единицы энергии потока. 3 н. и 7 з.п. ф-лы, 11 ил.

ВАКУУМНЫЙ НАСОС С ФИЛЬТРУЮЩИМ ЭЛЕМЕНТОМ

СПОСОБ ОТКАЧИВАНИЯ В СИСТЕМЕ ВАКУУМНЫХ НАСОСОВ И СИСТЕМА ВАКУУМНЫХ НАСОСОВ

Entspanner-Verdichter als Ersatz eines Drosselventils einer zwei-phasigen Strömung

FLUEGELZELLENPUMPE

The pump rotor 4 is eccentrically mounted within a cylindrical housing 1 and has a plurality of radially extending slots 12a, 12b, 12c each accommodating a slidable vane 11a, 11b, 11c which moves under centrifugal force when the rotor 4 rotates, towards the circumferential inner srface of the housing 1. Pins 13 in the vanes 11a, 11b, 11c engage slots (15a), 15b in the axial end walls of the housing to prevent the tips of the vanes from making sliding contact with the facing circumferential inner surface of the housing and thereby reducing wear. Various forms and arrangements of the vane pins and housing slots and also various vane and guide constructions are disclosed. ...

Sliding vane pump

A vane pump comprising an intake port for sucking air into the pump, the intake port being extended axially with respect to a housing having an approximately cylindrical shape, and an outlet port for discharging air, the outlet port being extended from the peripheral wall of the housing toward the outer periphery, so as to make a flow of air smooth.

Orbiting rotary compressor

Vacuum pump with filtering element

The invention relates to a vacuum pump (1) including a housing (2) in which a first input opening (21) and a second output opening (22) are arranged so as to enable an air flow (F), and inside of which a filtering element (3) is removably mounted, wherein at least one opening in said housing (2), selected from among said first input opening (21) and second output opening (22), is arranged on an exhaust cover (4) that is both removable from said housing (2) but rigidly connected to said filtering element (3), and wherein the connection between the housing (2) and the exhaust cover (4) is not sealed. The invention also relates to a corresponding cartridge (30) for a vacuum pump (1), wherein an exhaust cover (4) is built into said closure cap (32) of the filtering element (3), the connection between the housing (2) and the exhaust cover (4) not being sealed.

Method of pumping in a system of vacuum pumps and system of vacuum pumps

Method of pumping and pumping system (SP, SPP) comprising: a lubricated-vanes main vacuum pump (3) with a gas inlet orifice (2) connected to a vacuum chamber (1) and a gas outlet orifice (4) opening into a pipe (5) before opening into the gas outlet (8) of the pumping system (SP, SPP), a non-return valve (6) positioned in the pipe (5) between the gas outlet orifice (4) and the gas outlet (8), and a lubricated-vanes auxiliary vacuum pump (7) connected in parallel with the non-return valve (6). The lubricated-vanes main vacuum pump (3) is set into operation in order to pump the gasses contained in the vacuum chamber (1) through the gas outlet orifice (4); simultaneously, a lubricated-vanes auxiliary vacuum pump (7) is set in operation and continues to be in operation for all of the time that the lubricated-vanes main vacuum pump (3) is pumping the gasses contained in the vacuum chamber (1) and/or for all of the time that the lubricated-vanes main vacuum pump (3) is maintaining a defined pressure ...

METHOD OF PUMPING IN A SYSTEM OF VACUUM PUMPS AND SYSTEM OF VACUUM PUMPS

Abstract The present invention relates to a pumping method in a pumping system (SP, SPP) comprising: a main lubricated rotary vane vacuum pump (3) with a gas inlet port (2) connected to a vacuum chamber (1) and a gas outlet 5 port (4) leading into a conduit (5) before coming out into the gas outlet (8) of the pumping system (SP, SPP), a non-return valve (6) positioned in the conduit (5) between the gas outlet port (4) and the gas outlet (8), and an auxiliary lubricated rotary vane vacuum pump (7) connected in parallel to the non-return valve (6). According to this method, the main lubricated rotary vane vacuum 10 pump (3) is activated in order to pump the gases contained in the vacuum chamber (1) through the gas outlet port (4), simultaneously the auxiliary lubricated rotary vane vacuum pump (7) is activated and continues to operate all the while that the main lubricated rotary vane vacuum pump (3) pumps the gases contained in the vacuum chamber (1) and/or all the while that the main 15 ...

Air rotary pump

ROTARY COMPRESSOR HAS PALLETS

Le compresseur rotatif (1) à palettes comprend un corps (2) définissant une première cavité (3) logeant un premier rotor (22), supportant trois palettes (28) équiréparties angulairement, coulissant dans des fentes radiales (27) du premier rotor (22) et ayant une extrémité externe (29) en contact avec une surface interne (30) de la première cavité (3) et une extrémité interne (32) en contact avec un deuxième rotor (33), déplaçable par rapport au premier rotor (22) et formant avec ce dernier une deuxième cavité (34) dans la première cavité (3), les palettes (28) définissant, entre le premier rotor (22) et le corps (2), une pluralité de premières chambres de travail à volumes variables et, entre le premier roter (22) et le deuxième rotor (33), une pluralité de deuxièmes chambres de travail (35), à volumes variables.

Oil pump

Multiple stage orbiting ring rotary compressor

СПОСОБ ОТКАЧИВАНИЯ В СИСТЕМЕ ВАКУУМНЫХ НАСОСОВ И СИСТЕМА ВАКУУМНЫХ НАСОСОВ

Группа изобретений относится к способу откачивания в системе вакуумных насосов и системе вакуумных насосов. Способ откачивания в системе вакуумных насосов содержит главный смазываемый пластинчато-роторный вакуумный насос (3) с впускным патрубком (2) для газов, соединенным с вакуумной камерой (1), и выпускным патрубком (4) для газов, ведущим в трубу (5) перед поступлением газа на выпуск (8) для газов системы вакуумных насосов, обратный клапан (6), расположенный в трубе (5) между патрубком (4) и выпуском (8), и вспомогательный смазываемый пластинчато-роторный вакуумный насос (7), подсоединенный параллельно клапану (6). Активируют насос (3) для откачивания газов, содержащихся в камере (1), через патрубок (4), одновременно активируют насос (7) и обеспечивают непрерывную работу насоса (7) все то время, пока насос (3) откачивает газы, содержащиеся в камере (1), и/или все то время, пока насос (3) поддерживает определенное давление в камере (1). Группа изобретений направлена на обеспечение снижения ...

Improvements in air and gas compressors

... 292,158. Hayart, L. June 17, 1927, [Convention date]. Oscillating - cylinder pumps.-The piston 2 is actuated bv an eccentric 4 rolling in the in. terior of an elongated cavity in the piston body, and the cylinder oscillates about a spindle 6, within an outer casing 7. Air enters the casing 7 by openings 9 and passes into the cylinder through ports 10 controlled by the piston. Compressed air is discharged through the valve 11 and chamber 12 to a conduit bored in the spindle 6. The driving shaft 3 carries flywheels. The outer casing, cylinder and piston are cooled by water circulation.

Improvements in rotary piston compressors

... 382,214. Rotary compressors. TEVES, A., 23, Gustavsburgstrasse, Frankfort-on- Main, Germany. April 19, 1932, No. 11226. Convention date, May 11, 1931. [Class 110 (ii).] The casing o f a rotary compressor is built up of two end bearing plates a, b, and intermediate rings c<1>, c<2>, d, with parallel machined faces. Bolts e secure the parts of the casing together. Parallel sided pistons f<1>, f<2> operate between the plates a, b and the centre plate d. Delivery valves k<1>, k<2> deliver into a common channel l. Both inlet and outlet valves and a non-return inlet valve are all located in the endplates a, b, and are accessible from outside the pump. The capacity of the pump may be varied by using pistons and rings of greater or less widths.

Electric motor, rotor, compressor, and refrigereation air conditioning device

Improvements in or relating to rotary air or gas compressors

... 797,730. Rotary pumps. SOUTHERN, J., FRANKLIN, A. C., and WORTHINGTONSIMPSON, Ltd. Aug. 15, 1956 [Aug. 15, 1955], No. 23404/55. Class 110 (2). In a multi-stage rotary gas compressor of the outwardly-sliding vane type having means for supplying lubricating, cooling or sealing oil to the working chambers, at least the high-pressure stage 2 is surrounded by a casing 10 and is provided with means, such as relief valves 21, for discharging excess oil to said casing. Oil is fed to each stage through passages, such as 24, 25, from the casing 10, the circuit incorporating a strainer and a cooler (not shown). The compressor is provided with an air inlet filter and silencer 53, inlet and outlet conduits 13-19 and a liquid separator 33 having float-actuated valve means 37, 38 for controlling the recirculation of the liquid. Valve means, responsive to the discharge pressure of the compressor, are provided to relieve the pressure in the casing, the said pressure being relieved when the compressor is ...

Rotor electric motor, compressor, and refrigerator/air-conditioner

A ROTARY-PISTON VACUUM PUMP

... 1,203,458. Rotary-piston vacuum pumps. LEYBOLD HERAEUS VERWALTUNG G.m.b.H. Oct.3, 1967 [Oct.26, 1966], No.44930/67. Heading F1F. In a rotary-piston vacuum pump having an eccentrically rotatable hypotrochoidal piston, as shown substantially elliptical, within a casing having the form of the appropriate envelope curve, each piston end-face 12, Fig.2, is provided with a central recess 16 completely filled with oil supplied through piston ducts (not shown) and formed around its periphery with internal teeth 14 which mesh with teeth on a stationary pinion 18 so that the piston rolls around the envelope curve at half the speed of the drive-shaft. To reduce piston weight and facilitate manufacture, the piston may be formed with cavities 20 covered by end-plates 22 which may be flush or slightly set back with respect to the piston end-faces when set back the recesses so formed are also filled with oil. The piston cavities are sealed so that gas cannot be entrained from the delivery to the suction ...

PUMPS

Improvements in or relating to Rotary Compression.

... 13,825. Lake, H. W., [Branch, H. A.]. June 7. Movable-abutment type; cooling parts.-In a rotary blower of the outwardly-sliding abutment type, all parts are water-cooled, and water is sprayed into the compression chamber during compression. The piston consists of a central body 8 secured to or formed in one with the shaft 7 and having two eccentric piston flanges 9, 10 working in annular chambers. Horseshoe shaped abutments 19, 20 are provided so that compression chambers of crescent shape are formed both inside and outside the pistons 9, 10. Stops 43 prevent excessive endlong movement of the abutments. The casing and piston 8 with its flanges 9, 10 have suitable passages, and the abutments 19, 20 and their shoes 17, 18 have suitable grooves in their faces, so that cooling-water may be circulated to every part, including the packing-rings 15. This water is forced under pressure from a water-separator 35 arranged in the discharge main 34, through a pipe 36 and a port 44 into the casing, ...

Mechanism for the sealing of the compression chamber of rotary piston compressors.

Blade type pump

METHOD OF PUMPING IN A SYSTEM OF VACUUM PUMPS AND SYSTEM OF VACUUM PUMPS

Méthode de pompage et système de pompage (SP, SPP) comprenant : une pompe à vide principale à palettes lubrifiées (3) avec un orifice d'entrée des gaz (2) relié à une enceinte à vide (1) et un orifice de sortie des gaz (4) donnant dans un conduit (5) avant de déboucher dans la sortie des gaz (8) du système de pompage (SP, SPP), un clapet anti-retour (6) positionné dans le conduit (5) entre l'orifice de sortie des gaz (4) et la sortie des gaz (8), et une pompe à vide auxiliaire à palettes lubrifiées (7) branchée en parallèle au clapet anti-retour (6). La pompe à vide principale à palettes lubrifiées (3) est mise en marche afin de pomper les gaz contenus dans l'enceinte à vide (1) par l'orifice de sortie des gaz (4), de manière simultanée, une pompe à vide auxiliaire à palettes lubrifiées (7) est mise en marche, et continue d'être en fonctionnement tout le temps que la pompe à vide principale à palettes lubrifiées (3) pompe les gaz contenus dans l'enceinte à vide (1) et/ou tout le temps que ...

ORBITING ROTARY COMPRESSOR

An orbiting rotary-type compressor including an orbiting cylindrical piston member, sealing members, cylinder housing, Oldham ring assembly and motor for permitting orbital movement. Sealing is achieved sliding vanes within slots in the cylinder housing which are sealingly biased toward orbiting piston member by means of springs. An axial compliance and a radial compliance mechanism promotes proper sealing.

ROTARY COMPRESSOR HAS PALLETS

A Rotary Vacuum Pump

Machine with mobile piston in a excentré rotor

Transmission gear for rotary piston vacuum pump

Blowing, compressing ventilator or vacuum pump of the rotary type

Improvements with the rotary pallet compressors

Compressor with registers on two floors

Rotary pallet booster

Refrigeration apparatus

Disclosed is a first stator defining an internal cavity and a second stator within the cavity of the first stator. A cylindrical rotor is disposed within the cavity. The rotor defines a first chamber within the cavity between it and the inner walls of the first stator and a second chamber within the cavity between the rotor and the outer walls of the second stator. The rotor carries vanes radially slidable in slots spaced circumferentially about the rotor. The inner and outer walls of the first and second stators respectively are spaced one from the other such that the linear distance therebetween along any extended radius of the rotor is substantially equal to the radial length of vanes whereby the outer and inner edges of the vanes are in continuous engagement along the inner and outer walls of the respective first and second stators upon rotation of the rotor. An inlet and an outlet are provided each of the first and second chambers. Air flowing into the second chamber is compressed ...

Single-phase induction motor, hermetic compressor, and refrigeration cycle device

The single-phase induction motor includes a stator fixed in a cylindrical frame by shrink-fitting or press-fitting, a main winding wire and an auxiliary winding wire provided on the stator, and a rotor provided on an inner circumferential side of the stator, in which an arc-shaped arc portion and a linear cutout portion are formed on an outer circumference of the stator, the arc portion is arranged on the outer circumference of the stator in a direction of the main winding wire magnetic pole with respect to the center of the stator, and a relief portion for reducing a contact area between the arc portion and an inner circumferential surface of the frame is formed on the arc portion.

Air compressor

СПОСОБ РАБОТЫ РОТОРНО-ЛОПАСТНОЙ МАШИНЫ (ВАРИАНТЫ) И РОТОРНО-ЛОПАСТНАЯ МАШИНА

... 1. Способ работы роторно-лопастной машины, заключающийся в преобразовании энергии рабочего тела в энергию механического вращения вала и/или придания дополнительной энергии потоку рабочего тела, отличающийся тем, что используют более чем один контур движения потока с возможностью вывода потока из каждого контура для промежуточного преобразования потока и возврата потока для дальнейшего преобразования.2. Способ по п. 1, отличающийся тем, что обеспечивают регулируемое последовательное или параллельное протекание гидравлических и/или тепловых, и/или механических, и/или физико-химических, и/или импульсно-волновых процессов в контурах роторно-лопастной машины.3. Способ работы роторно-лопастной машины, заключающийся в преобразовании энергии рабочего тела в энергию механического вращения вала и/или придания дополнительной энергии потоку рабочего тела, отличающийся тем, что используют не менее одного контура, содержащего охлаждающее тело, и воздействуют на протекание тепловых процессов другого контура ...

UMLAUFPUMPE

Supplying lubricant to a lubricant sealed pump

A method and an apparatus to provide a continuous lubricant supply to a lubricant-sealed pump 1 includes a lubricant-gas receiver for exhaust fluid that contains lubricant from the pump, and the receiver can separate and distribute the separated lubricant. The receiver can be a distributor 5 with an associated separator 10, and the pump receives separated lubricant via at least two lubricant sources E and F (D’ and D’’ Fig. 2). A reservoir 3 collects separated lubricant via at least one reservoir supply line ‘B’ and ‘H’ and delivers the lubricant to the pump oil supply line via a delivery line D. An isolation valve selectively isolates one of the two lubricant sources to the pump while the other of the two lubricant sources is in fluid communication. The reservoir may include further separation apparatus 4 and may be within a casing 2. The arrangement allows for lubricant change while the pump is running and facilitates a duty-and-standby/main-and-bypass lubrication system for ease of servicing ...

Rotor, electric motor, compressor, and refrigerator/air-conditioner

The rotor (3) is equipped with: a rotor core (4); and magnets (5) inserted in magnet insertion holes (6) formed on the rotor core (4). The magnet insertion holes (6) extend parallel to a rotational axis (C) of the rotor core (4), and are formed into an ark-like shape with the center part curved toward the rotational axis (C) when viewed along the rotational axis (C). The ark-like shape of the magnet insertion hole (6) is formed so as to have a first arc surface (61) and a second arc surface (62) having the same center as the first arc surface (61) and a larger diameter than the first arc surface (61). The second arc surface (62) has two protrusion parts (7) protruding toward the first arc surface (61). The magnet (5) is inserted between the two protrusion parts (7) and placed in contact with the two protrusion parts (7).

Vane pump

A Rotary Vacuum Pump

... 1,197,163. Rotary positive-displacement pumps. LEYBOLD-HERAEUS-VERWALTUNG G. m.b.H. Jan. 9, 1969 [Jan. 9, 1968], No. 1487/69. Heading F1F. In a rotary positive - displacement vacuumpump a rotor 7 revolves in a planetary manner and a seal 9 includes a rockable contact-element 4 of crescent-shaped profile. A spring-loaded strip carries the element 4 in a part-cylindrical concavity. The rotor has a hypotrochoidal profile where envelope curve matches the profile of the casing.

ROTARY FLUID TRANSFER APPARATUS AND ASSOCIATED METHODS

A fluid transfer device (10, 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) and corresponding method of transferring fluid. The device (10, 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) comprises an inner member (46, 146, 246, 346, 446, 546, 646, 746, 846, 946, 1046, 1146) with a central axis (28, 128, 228, 328, 428, 528, 728, 728, 828, 928, 1028, 1128) and comprising an outer surface (48, 148, 248, 348, 448, 548, 748, 748, 848, 948, 1048, 1148); and an outer member (42, 142, 242, 342, 442, 542, 742, 742, 842, 942, 1042, 1142) coaxially arranged with the inner member (46, 146, 246, 346, 446, 546, 646, 746, 846, 946, 1046, 1146) and comprising an inner surface (44, 144, 244, 344, 444, 544, 744, 744, 844, 944, 1044, 1144) radially spaced from the outer surface of the inner member (46, 146, 246, 346, 446, 546, 646, 746, 846, 946, 1046, 1146) to define a space between the inner (46, 146, 246, 346, 446, 546, 646, 746, 846, 946, 1046, 1146) and outer members (42, 142, 242 ...

ROTARY PUMPS

Compressor of rotary air

Rotary piston pump

Vacuum pump with rotating impeller

Improvements with the rotary compressors

Improvements with the rotary compressors of air with pallets

Dry vane pump functioning

Improvements with the rotary compressors

Vacuum pump with rotating impeller

Improvements with the rotary machines compressing or slackening a compressible fluid

Coated sliding material

In order to prevent the cracking of a coating of sliding material, in which an electroless Ni-B plating coating layer is formed on the surface of aluminum alloy, an electroless Ni-P plating coating layer is provided on the aluminum alloy.

OIL SEALING OF ROTARY PISTON VACUUM PUMP

ВАКУУМНЫЙ НАСОС И ПАТРОН ДЛЯ ВАКУУМНОГО НАСОСА

Группа изобретений относится к области вакуумных насосов. Вакуумный насос содержит корпус, в котором размещены первое входное отверстие и второе выходное отверстие (22) для обеспечения прохождения воздушного потока. Внутри корпуса разъемно установлен фильтрующий элемент. По меньшей мере одно отверстие корпуса, выбранное из первого входного отверстия и второго выходного отверстия (22), расположено на выпускной крышке (4). Крышка (4) выполнена съемной относительно корпуса, но за одно целое с фильтрующим элементом. Соединение между корпусом и выпускной крышкой (4) не является герметичным. Группа изобретений направлена на обеспечение простого и практичного монтажа и демонтажа фильтрующих элементов в корпусе насоса. 4 н. и 26 з.п. ф-лы, 5 ил.

Maschine mit sichelfoermigem Arbeitsraum und exzenterfoermig bewegtem Kolben

Rotationspumpe mit Kunststoffverbundstruktur

Rotationspumpe, vorzugsweise Flügelpumpe, umfassend: (a) ein Gehäuse (1) mit einem Einlass (3) und einem Auslass (4) für ein Fluid und einer mit dem Einlass und dem Auslass verbundenen Förderkammer (2), (b) einen in der Förderkammer (2) um eine Drehachse (R10) drehbaren Förderrotor (10) mit einer in Bezug auf die Drehachse (R10) zentralen Rotorstruktur (11), (c) und eine den Förderrotor (10) umgebende Stellstruktur (20), die mit dem Förderrotor (10) Förderzellen (9) bildet, um das Fluid vom Einlass (3) zum Auslass (4) zu fördern, und relativ zum Förderrotor (10) vorzugsweise quer zur Drehachse (R10) hin und her beweglich ist, um ein spezifisches Fördervolumen der Rotationspumpe verstellen zu können, (d) wobei wenigstens eine der Strukturen (11, 20), nämlich die Stellstruktur (20) und/oder die Rotorstruktur (11), eine Werkstoffverbundstruktur ist und einen Formbereich (15; 25) aus Kunststoff und einen mit dem Formbereich (15; 25) fest verbundenen Funktionsbereich (16; 26) aus einem Funktionswerkstoff ...

Improvements in sliding vane rotary machines

... 960,080. Rotary vane machines. P. BARTOLINI-SALIMBENI. Feb 1, 1962 [Feb. 6, 1961], No. 3802/62. Heading F1F. A rotary sliding vane machine, e.g., a compressor, comprises a cylindrical casing 4, Fig. 1, closed at its ends by end plates 5, 6 and eccentrically mounting a rotor 10 formed with a driven shaft 10a and having an axial bore 10b. The casing is flanked by members 2, 3 having chambers 11, 13 in which fans or impellers 12, 14 fixed to the rotor rotate to accelerate the flow of fluid to the variable volume rotor chambers. Fluid admitted to the device from a lateral inlet passage 1 is passed to the rotor chambers in part by the fan 12 and an arcuate port 15, Fig. 5, and in part through the bore 10b, ports 10c, 10d the fan 14 and arcuate ports 16. The fan 14 may include an auxiliary fan 14a for cooling and lubricating. The vanes 22 are slidably mounted in non-radial grooves 21 and preferably fitted in pairs with a plate 23, Fig. 8 therebetween. Each vane is made in two portions 22a, 22b ...

Improvements in or relating to rotary compressors

... 617,042. Rotary compressors. HERZMARK, N. Sept. 27, 1946, No. 28866. [Class 110 (ii)] The rotor 10, having outwardly-sliding vanes 11, is provided with sealing pistons 15, rotating in end recesses 16, lubricating oil being fed into the working chamber 12 passing into grooves 17 and outwards through ports 20. Three axially-spaced ports 18 admit the oil. Cooling air passes through ducts 22, which may be finned, in the rotor aided by helical vanes 25 in the end pistons. Spiders 26 carry the shaft bearings 27; at one end the spider is integral with a bracket 29 which may be bolted to an engine casing. Each vane has a shoe 32 with a bevelled toe 33. To relieve rubbing pressure of a vane tip on the casing bore springs 40 press inwards on a bar 42 secured to the inner end of a vane. The springs exert the maximum force on a vane when it is in its most extended position. Leaf springs 37 bear on the casing bore between the delivery 35 and two inlet ports 19. Keys 44, set at 90 degrees apart, secure ...

Improvements in rotary air compressors

... 670,793. Rotary compressors. PEERLESS & ERICSSON, Ltd., and STOCKHOLM, K. May 30, 1950, [June 2, 1949], No. 14788/49. Class 110(ii) A sliding-vane compressor has an eccentric liner 2, around the rotor 3, and inlet and outlet grooves 8, 9, leading to inlet and outlet ports 12, 14, 11, 13 in the liner. The ports 14, 13 lie in the plane of the inlet and outlet pipes 6, 7 and additional ports are provided along the length of the liner.

Rotating machine and rotors for use therein

Rotary air compressor or water pump

... 349,125. Rotary pumps and compressors. LUMB, W., St. Ives, Hatch Lane, Harmondsworth, Middlesex. Feb. 18, 1930, No. 5476. [Class 110 (ii).] Packing drums ; discharge and suction pipes and passages for pumps ; cooling parts.-At the junction of the end faces of the rotor 2 and cylinder 3 a packing ring 10 is forced against these surfaces by the pressure of the delivery fluid which enters receiver chambers 6 formed between each end of the rotor and the side covers of the cylinder. The packing ring is concave to engage the co-operating rotor and cylinder surfaces and is held in position by springs 12 and interposed rollers 11. The rotor is of channel form with a cam piston co-operating with a fluid-pressed sliding or rocking abutment to provide the working space and is made hollow with a baffle 8 inside so that cooling fluid can be circulated therethrough. The pumped fluid passes from the outlet port of the working chamber to the inlet ports 13 of the receiver chambers 6 and is delivered through ...

Центробежный лопастной насос и впускной обратный клапан для насоса

1. Центробежный лопастной насос, который содержит корпус с воздушной камерой внутри, входное отверстие, проходящее до воздушной камеры, и обратный клапан, соединенный с входным отверстием и содержащий ограничитель, спиральную пружину, которая закреплена на первой стороне ограничителя и установлена с возможностью смещать вторую сторону ограничителя в сторону седла клапана, а также пористый элемент, расположенный между спиральной пружиной и воздушной камерой и выполненный с возможностью предотвращать прохождение обратного потока жидкости.2. Центробежный лопастной насос по п. 1, в котором обратный клапан установлен между входным отверстием и воздуховодом, проходящим к усилителю тормозов транспортного средства, а обратный поток жидкости включает в себя масло, находящееся в воздушной камере и проходящее в обратном направлении относительно направления воздушного потока, входящего во впускное отверстие.3. Центробежный лопастной насос по п. 1, в котором пористый элемент включает в себя металлическую пену, выполненную с возможностью пропускать воздушный поток к воздушной камере и предотвращать прохождение обратного потока жидкости к ограничителю.4. Центробежный лопастной насос по п. 1, который также включает в себя канал, расположенный перпендикулярно входному отверстию, образуя Г-образную форму, причем пористый элемент со спиральной пружиной расположены внутри указанного канала с возможностью удерживать ограничитель на расстоянии от входного отверстия.5. Центробежный лопастной насос по п. 4, в котором канал включает в себя седло клапана, выступающее внутрь в направлении центральной оси канала и примыкающее РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F04D 29/24 (13) 151 786 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014117283/06, 29.04.2014 (24) Дата начала отсчета срока действия патента: 29.04.2014 (72) Автор(ы): МОЕТАКЕФ Мохаммад Али (US) (73) Патентообладатель(и): Форд Глобал ...

Rotary vane compressor

A rotary vane compressor includes a cylinder chamber having an ellipsoidal inner wall shape, a rotor rotatably provided in the cylinder chamber, a vane held in the rotor so as to contact with an inner wall surface of the cylinder chamber along with a rotation of the rotor, a vane slot provided on the rotor and offset on a reverse rotational side of the rotor from a radial line passing over a rotational center of the rotor, and a controller for controlling a rotation of the rotor. The controller reversely rotates the rotor for a predetermined time upon activating the compressor. According to the compressor, chattering can be prevented by surely protruding the vane from the vane slot without providing extra parts. In addition, the vane can be produced with easy working processes at low cost.

Unified variable displacement oil pump and vacuum pump

A unified variable displacement pump having a housing which includes a fluid pump and a vacuum pump. A portion of the housing is part of the fluid pump, and a portion of the housing is part of the vacuum pump. A shaft extends through the fluid pump and the vacuum pump. A vacuum pump rotor is formed as part of the shaft, and a vane pump rotor is mounted to the shaft such that when the shaft rotates, the vacuum pump rotor and the vane pump rotor rotate, causing the fluid pump to pump fluid and the vacuum pump to generate a vacuum. The vacuum pump and fluid pump are combined into a single component driven by a single shaft.

Air compression method and apparatus

In a traditional hybrid air engine it is complicated to adjust valve timing to compensate for different engine operating modes. Provided is an air compression method and apparatus. The air compression method can be carried out in a single stage with a plurality of air tanks ( 61, 63 ) coupled to a compressor ( 51 ). The compressor ( 51 ) may be a cylinder Air is added to the compressor ( 51 ) at atmospheric pressure. Pressurized air is then added to the compressor ( 51 ) from a low pressure air tank ( 61 ). The compressor ( 51 ) compresses the air and transfers a portion of it to a high pressure air tank ( 63 ). The remaining portion of the compressed air is transferred to the low pressure air tank ( 61 ) for use in the next compression cycle A cam shaft ( 27 ) having a two stroke cam ( 93 ) and a four stroke cam ( 95 ) for each intake valve ( 59 ) and exhaust valve ( 55, 57 ) is provided to control valve timing during different operating modes.

Vane pump apparatus and method

The invention relates to a vane pump, comprising an electric drive unit having an electric motor and a motor shaft, a pump chamber, attached on the electric drive unit, a rotor having a plurality of blades, said rotor being arranged concentrically to the motor shaft within the pump chamber, wherein the motor shaft is engaged with the rotor by way of a tappet which is connected torsionally rigid with the motor shaft and the tappet comprises at least one tappet peg, which is engaged in a rotor recess that corresponds to the tappet peg, wherein the at least one rotor recess has an oval shape and the tappet peg is contoured in such a way that two first slightly curved contoured sections each form one contact area with one oblong planar section each of the rotor recess.

Symmetrical vane pump apparatus and method

The invention relates to a vane cell pump ( 1 ) comprising an electrical drive unit with an electric motor and a motor shaft ( 6 ), a pump chamber ( 2 ) that connects to the electrical drive unit and has a pump ring ( 3 ), and also a rotor ( 4 ) that is arranged concentric to the motor shaft ( 6 ) within the pump chamber ( 2 ) and is in active connection with the motor shaft ( 6 ), wherein the rotor ( 4 ) has a number of guide slots ( 40 ) that extend inward from the outer circumference of the rotor and in each of which a vane ( 5 ) is arranged in a moveable manner with two vane ends ( 50, 51 ) opposite each other. The vane ends ( 50, 51 ) of each vane ( 5 ) have a mirror-symmetric design relative to the transverse center plane of the vane.

ROTARY VANE PUMPS WITH ASYMMETRICAL CHAMBER CAVITIES

Rotary vane pumps include casings having asymmetrical cavities that accommodate a rotor. For a single pump chamber, one portion of the rotor abuts or nearly abuts the inner wall of the cavity at a single location while one portion of the rotor and the inner wall are not in contact with each other thereby defining a pump chamber. For a dual pump chamber embodiment, two diametrically opposed portions of the rotor abut or nearly abut the inner wall of the cavity while two portions of the rotor and inner wall are not in contact with each other thereby defining the two pump chambers. The two pump chambers are disposed on opposite sides of the minor axis of the cavity. The cavities of each pump are skewed so each pump chamber is larger in volume at the inlet end than at the outlet end. 1. A rotary vane pump comprising:a casing comprising an asymmetrical cavity having a continuous inner wall, the cavity having a minor axis and a major axis;a rotor disposed within the cavity for rotation within the cavity, during a rotation, two diametrically opposed portions of the rotor abut or nearly abut the inner wall of the cavity at or near the minor axis of the cavity while two portions of the rotor and inner wall are not in contact with each other thereby defining two pump chambers disposed on opposite sides of the minor axis;each pump chamber comprising an inlet end and an outlet end, the inlet ends disposed in different pump chambers on opposite sides of the minor axis and on opposite sides of the major axis, the outlet ends disposed in different pump chambers on opposite sides of the minor axis and on opposite sides of the major axis;each pump chamber being larger in volume between the inlet end and major axis than between the major axis and the outlet end.2. The pump of wherein the rotor comprises a plurality of slots ranging from 3 to 12 with each slot accommodating a vane.3. The pump of wherein the rotor comprises about 8 slots and about 8 vanes.4. The pump of wherein an ...

Process for manufacturing casing, and vacuum pump

Damage of a rotor and a side plate are suppressed with a simple construction to prevent reduction in durability of a vacuum pump. A casing manufacturing method comprises a step (step S 2 ) of disposing a cylinder liner forming a cylinder chamber in a mold, and casting a casing main body integrally with the cylinder liner by using molten metal, and a step (step S 3 ) of processing an intercommunication hole and an exhaust hole so that the intercommunication hole and the exhaust hole penetrate through both the cylinder liner and the casing main body together and intercommunicate with the cylinder chamber.

Vane compressor

In a vane compressor, a transmission pin is accommodated in a communication hole that provides communication between a first vane slot and a second vane slot. The transmission pin includes a loose-fit portion that is loosely inserted in a recessed portion formed in a bottom surface of each of first and second vanes, a shaft portion, and a flange portion formed between the loose-fit portion and the shaft portion and in contact with the bottom surface. A coil spring is disposed in the communication hole to urge the first vane and the second vane in opposite directions away from each other via the flange portion. The coil spring is disposed around the shaft portion and supported by the flange portion so as to urge and support the transmission pin.

MOTOR VEHICLE VACUUM PUMP HAVING A SWITCHABLE CLUTCH

A motor vehicle vacuum pump includes a pump rotor, a coupling element, and a clutch arrangement. The clutch arrangement locks or releases the coupling element to/from the pump rotor so that the coupling element rotates together with or is released from the pump rotor. The clutch arrangement comprises a bolt holder connected to the pump rotor or to the coupling element to rotate therewith, an axially displaceable guide body, and a catch body connected to the coupling element or to the pump rotor to rotate therewith. The bolt holder comprises a bolt guide and a bolt body displaceable therein. The guide body is assigned to the bolt holder and comprises a guiding surface inclined with respect to an axial plane. The bolt body is forced radially into a locking position via the guiding surface. The catch body has a catch depression wherewith the bolt body engages in the locking position. 112-. (canceled)13. A mechanical motor vehicle vacuum pump comprising:a pump rotor;a coupling element configured to be mechanically driven by an internal combustion engine; and a bolt holder connected to the pump rotor or to the coupling element so as to rotate therewith, the bolt holder comprising at least one radial bolt guide and a bolt body which is configured to be displaceable in the at least one radial bolt guide,', 'a guide body configured to be axially displaceable, the guide body comprising a guiding surface which is inclined with respect to an axial plane, the guide body being assigned to the bolt holder, the bolt body being forced radially into a locking position via the guiding surface, and', 'a catch body connected to the coupling element or to the pump rotor so as to rotate therewith, the catch body having at least one rotational catch depression which is configured to have the bolt body engage therewith in the locking position., 'a clutch arrangement which is switchable and positively locking, the clutch arrangement being configured to lock the coupling element to the pump ...

Motor vehicle assembly arrangement with an internal combustion engine and a switchable vacuum pump

An arrangement of motor vehicle units includes a vacuum pump, a power brake unit, a pump which pumps a hydraulic fluid with a control pressure, and a control valve. The vacuum pump comprises a pump rotor, a coupling element, a control connection, a coupling arrangement switchable by the control connection to lock/unlock the coupling element with the pump rotor, and a suction connection. The power brake unit comprises a negative pressure chamber connected with the suction connection. The control valve, when unlocked, switches the control pressure of the hydraulic fluid through to the control connection to unlock. The control valve comprises an actuator acted on by a pressure of the negative pressure chamber which switches the control pressure through to the control connection if the pressure in the negative pressure chamber is greater than a threshold pressure so that the switchable control valve is switched into its unlocked state.

VANE PUMPS

A vane pump includes a liner defining a cammed inner surface, a rotor rotatably disposed within the liner that has a plurality of vane slots, and a plurality of vanes slidably disposed within vane slots of the rotor and configured to extend away from the rotor and contact the cammed inner surface of the liner. The plurality of vanes include at least one sentinel vane that is configured to allow detection of wear on the sentinel vane. 1. A vane pump , comprising:a liner defining a cammed inner surface;a rotor rotatably disposed within the liner and including a plurality of vane slots; anda plurality of vanes slidably disposed within vane slots of the rotor and configured to extend away from the rotor and contact the cammed inner surface of the liner, wherein the plurality of vanes include at least one sentinel vane that is configured to allow detection of wear on the sentinel vane.2. The vane pump of claim 1 , wherein the sentinel vane includes a base portion that is larger than the vane slot of the rotor such that after the sentinel vane wears a predetermined amount claim 1 , the base portion prevents the sentinel vane from extending further from the rotor such that a gap separates a sentinel vane tip and a portion of the cammed inner surface.3. The vane pump of claim 2 , wherein the portion of the cammed inner surface where the gap is created includes a constant radius section.4. The vane pump of claim 2 , wherein the at least one sentinel vane includes a plurality of symmetrically located sentinel vanes.5. The vane pump of claim 4 , wherein the plurality of symmetrically located sentinel vanes includes two sentinel vanes spaced 180 degrees circumferentially from each other.6. The vane pump of claim 4 , wherein the plurality of symmetrically located sentinel vanes are spaced circumferentially apart 360/N degrees claim 4 , wherein N is the total number of sentinel vanes.7. The vane pump of claim 2 , further comprising a vibration sensor operatively connected to the ...

MOTOR VEHICLE VACUUM PUMP

A motor vehicle vacuum pump includes a pumping chamber in which a pump rotor rotates to compress a gas, an outlet chamber into which the gas exits, a separation wall which includes a valve opening and a valve seat arranged on an outlet side of the separation wall around the valve opening. The separation wall separates the pumping chamber from the outlet chamber. An outlet valve is formed as a non-return valve in the separation wall. The outlet valve is formed by the valve opening in the separation wall and includes a valve body with a closing body. The outlet valve has the gas exit therethrough from the pumping chamber into the outlet chamber. A corresponding part of the closing body is supported on the valve seat when the closing body is in a closed position. The valve seat and/or the corresponding part of the closing body includes microgrooves. 110-. (canceled)11. A motor vehicle vacuum pump comprising:a pump rotor;a pumping chamber in which the pump rotor is arranged to rotate so as to provide a compressed gas;an outlet chamber into which the compressed gas exits from the pumping chamber;a separation wall comprising a valve opening and a valve seat arranged on an outlet side of the separation wall around the valve opening, the separation wall being configured to separate the pumping chamber from the outlet chamber;an outlet valve formed as a non-return valve in the separation wall, the outlet valve being formed by the valve opening in the separation wall and comprising a valve body which comprises a closing body, the outlet valve being configured to have the compressed gas exit from the pumping chamber into the outlet chamber therethrough,wherein,a corresponding part of the closing body is supported on the valve seat when the closing body is in a closed position, andat least one of the valve seat and the corresponding part of the closing body comprises microgrooves oriented in a lateral direction.12. The motor vehicle vacuum pump as recited in claim 11 , wherein ...

Rotary vane pump for generating a vacuum

A rotary vane pump for generating a vacuum, having an electric drive with a motor stator and a motor rotor, wherein the motor stator and the motor rotor radially encompass the pump housing. The motor stator is non-rotatably disposed around or on the pump housing. The motor rotor is disposed on the side of the motor stator facing away from the pump housing, such that an overall housing is provided that accommodates the electric drive and the pump housing, and the overall housing has a housing floor and a housing shell, wherein the housing floor, together with the pump housing delimits the pump chamber.

VANE ROTARY COMPRESSOR

A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots. A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber. 1. A vane rotary compressor , comprising:a cylinder;a main bearing and a sub bearing coupled to the cylinder to form a compression space together with the cylinder, wherein at least one of the main bearing and the sub bearing includes a back pressure pocket formed on a surface facing the cylinder;a rotation shaft radially supported by the main bearing and the sub bearing;a roller coupled to the rotation shaft and rotatably supported within the cylinder between the main bearing and the sub bearing, the roller being configured such that an outer circumferential surface of one side of the roller is positioned in close proximity with an inner circumferential surface of the cylinder at a contact point, the roller including a plurality of vane slots formed along a circumferential direction of the roller, with each of the vane slots including one end opened toward the outer circumferential surface of the roller, and a back pressure chamber formed at the opposite end of the vane slot and in fluid communication with the back pressure pocket during at least a portion of a full rotation of the roller;a plurality of vanes slidably ...

PUMPING ASSEMBLY, COMPRESSOR AND AIR CONDITIONING EQUIPMENT

The present disclosure provides a pumping assembly, a compressor and air conditioning equipment. The pumping assembly includes a first structural body, a rolling bearing assembly, a second structural body, a third structural body and a main shaft passing through the first structural body, the rolling bearing assembly, the second structural body and the third structural body. The pumping assembly includes: a first lubricating oil path passing through a second structural part, the sliding sheet backpressure cavity, a third structural part, a second structural part and a rolling body of the rolling bearing assembly; a second lubricating oil path passing through the sliding sheet backpressure cavity and a first pressure relieving groove of the first structural body; and a third lubricating oil path passing through the sliding sheet backpressure cavity, the first structural part and the rolling body of the rolling bearing assembly. 1. A pumping assembly , comprising a first structural body , a rolling bearing assembly , a second structural body , a third structural body and a main shaft , wherein the main shaft sequentially passes through the first structural body , the rolling bearing assembly , the second structural body and the third structural body , and the pumping assembly comprising a plurality of lubricating oil paths , wherein the plurality of lubricating oil paths at least comprises:a first lubricating oil path passing through the second structural body, a sliding sheet backpressure cavity of a rotor structure of the main shaft, the third structural body, the second structural body and a rolling body of the rolling bearing assembly;a second lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft and a first structural body pressure relieving groove of the first structural body; anda third lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft ...

VANE FOR A VANE CELL PUMP AND VANE CELL PUMP

A vane for a vane cell vacuum pump. The vane can be rotated about an axis of rotation by a rotor in a pump chamber and guided in the longitudinal direction in the rotor, with an upper side and a lower side to abut against the bottom and the ceiling of the pump chamber, with a rear side opposite a front side to limit the pressure chambers, with at least one face to slidably abut against an inside wall of the pump chamber on the casing side. The vane comprises a base body of a first plastic material and a vane end molded of a second plastic material to the base body forming the face. The base body comprises a mounting section around which the vane end is formed. The mounting section comprises at least one recess transverse to the front side and/or the rear side. 1106010666466. A vane () for a vane cell pump ()—in particular , for a vacuum pump—wherein the vane () can be rotated about an axis of rotation by a rotor () in a pump chamber () and guided in the longitudinal direction in the rotor () ,{'b': 12', '14', '64, 'with an upper side () and a lower side to abut against the bottom and the ceiling of the pump chamber (),'}{'b': 16', '18', '16, 'with a front side () and a rear side () opposite the front side () to limit the pressure chambers,'}{'b': 20', '68', '64, 'with at least one face () to slidably abut against an inside wall () of the pump chamber () on the casing side,'}{'b': 10', '22', '24', '22', '20, 'wherein the vane () comprises a base body () made of a first plastic material and a vane end () that is molded to the base body (), forms the face (), and consists of a second plastic material, and'}{'b': 22', '26', '24, 'wherein the base body () comprises a mounting section () around which the vane end () is formed,'}{'b': 26', '36', '38', '40', '42', '16', '18, 'wherein the mounting section () comprises at least one recess (, , , ) that runs in a direction transverse to the front side and/or the rear side (, ).'}210363826. The vane () according to claim 1 , ...

PLASTIC ROTOR FOR A VACUUM PUMP

A rotor for a vane cell pump—in particular, for a vacuum pump—with a base body that is made of plastic and can be driven by rotation, and that rotates about an axis of rotation during operation, wherein the base body comprises a guiding section for slidably receiving a pump vane and wherein the base body is flanked in the direction of the axis of rotation by a first bearing surface and a second bearing surface, wherein the second bearing surface comprises bearing sections that are at a distance from one another and that lie on a circular path that is arranged concentrically to the axis of rotation. 1101214121612142426265014. A rotor () for a vane cell pump—in particular , for a vacuum pump—with a base body () that is made of plastic and can be driven by rotation , and that rotates about an axis of rotation () during operation , wherein the base body () comprises a guiding section () for slidably receiving a pump vane and wherein the base body () is flanked in the direction of the axis of rotation () by a first bearing surface () and a second bearing surface () , wherein the second bearing surface () comprises bearing sections () that are at a distance from one another and that lie on a circular path that is arranged concentrically to the axis of rotation ().2101264662614. The rotor () according to claim 1 , wherein the base body () comprises recesses ( claim 1 , ) that start from the second bearing surface () and extend along the axis of rotation ().310265450. The rotor () according to claim 1 , wherein the second bearing surface () comprises two circular arc sections () that are radially opposite each other and that each comprise a bearing section () radially at the outside.4102654606250. The rotor () according to claim 3 , wherein the second bearing surface () comprises between the circular arc sections () at least one—preferably claim 3 , two—bar sections ( claim 3 , ) that comprise a bearing section () at their free end.51026. The rotor () according to claim 1 , ...

ELECTRIC MOTOR VEHICLE VACUUM PUMP ARRANGEMENT

An electric vehicle vacuum pump assembly includes a combination, a separate acoustic barrier casing configured to encase the combination in each of a radially-spaced relationship and an axially-spaced relationship, and an annular gastight attenuation assembly radially arranged between the separate acoustic barrier casing on a first side and the combination on a second side. The combination comprises a pump unit and a drive motor comprising a rotor space, a stator space, a ventilation inlet, and a ventilation outlet. The rotor space comprises a motor rotor, and the stator space comprises a motor stator. The separate acoustic barrier casing comprises an intake connection and a discharge connection. The ventilation inlet and the ventilation outlet of the drive motor are configured to provide a forced ventilation past the annular gastight attenuation assembly and through at least one of the rotor space and the stator space. 112-. (canceled)13. An electric vehicle vacuum pump assembly comprising:a combination comprising:a pump unit, anda drive motor comprising a rotor space, a stator space, a ventilation inlet, and a ventilation outlet, the rotor space comprising a motor rotor, and the stator space comprising a motor stator;a separate acoustic barrier casing configured to encase the combination in each of a radially-spaced relationship and an axially-spaced relationship, the separate acoustic barrier casing comprising an intake connection and a discharge connection; andan annular gastight attenuation assembly radially arranged between the separate acoustic barrier casing on a first side and the combination on a second side,wherein, the ventilation inlet and the ventilation outlet of the drive motor are configured to provide a forced ventilation past the annular gastight attenuation assembly and through at least one of the rotor space and the stator space.14. The pump assembly as recited in claim 13 , wherein the pump unit is a rotary pump unit arranged coaxially with ...

CYLINDER-ROTATION-TYPE COMPRESSOR

A primary groove, into which a primary vane is slidably fitted, and a primary rotor-side suction passage, which conducts refrigerant of a shaft-side suction passage of a shaft to a primary compression chamber, are formed at a primary rotor. The primary groove is shaped into a form that extends from an inner peripheral side toward an outer peripheral side and extends toward a rear side with respect to a rotational direction, and the primary rotor-side suction passage is shaped into a form that extends from the inner peripheral side toward the outer peripheral side and extends and tilts toward a front side with respect to the rotational direction. A fluid outlet of the primary rotor-side suction passage opens at a location that is immediately after the primary groove on the rear side of the primary groove with respect to the rotational direction. 1. A cylinder-rotation-type compressor comprising:a cylinder that is shaped into a cylindrical tubular form and is rotatable about a central axis;a rotor that is shaped into a cylindrical tubular form and is placed in an inside of the cylinder, wherein the rotor is rotatable about an eccentric axis, which is eccentric to the central axis of the cylinder;a shaft that rotatably supports the rotor; anda vane that is shaped into a plate form and is slidably inserted into a groove formed in the rotor, while the vane partitions a compression chamber that is formed between an outer peripheral surface of the rotor and an inner peripheral surface of the cylinder, wherein:the cylinder and the rotor are synchronously rotatable;when the rotor is rotated, the vane is displaced such that an outer-peripheral-side end portion of the vane contacts the inner peripheral surface of the cylinder;a shaft-side suction passage, which conducts compression-subject fluid received from an outside, is formed in an inside of the shaft;a rotor-side suction passage, which conducts the compression-subject fluid outputted from the shaft-side suction passage ...

Twin vane rotary vacuum pump

Vacuum pump ( 1 ), comprising a housing ( 2 ) having an inlet ( 4 ) and an outlet ( 6 ) and defining a chamber ( 8 ) within the housing ( 2 ), a rotor ( 10 ) for rotational movement about a rotational axis (AR) within the chamber ( 8 ), and at least a first and a second vane ( 22, 24 ) received in respective first and seconds slots ( 16, 18 ) formed in the rotor ( 10 ). The first and second slots ( 16, 18 ) are substantially parallel to each other, and a length (L V ) of each vane ( 22, 24 ) is larger than a length (L S ) of the respective slot. Production method of such a vacuum pump.

Compressor and Exhaust Structure Thereof

Disclosed are a compressor and exhaust structure thereof. The exhaust structure includes a cylinder, an upper flange and a lower flange respectively provided on an upper side and a lower side of the cylinder, and a main shaft having a sliding vane mounting portion. The sliding vane mounting portion of the main shaft is provided with at least two sliding vanes. A rotary plate is provided between the sliding vane mounting portion and at least one of the upper flange and the lower flange; the rotary plate is fixedly connected with the main shaft, and provided with exhaust openings and exhaust valves configured to control opening/closing of respective exhaust openings. The exhaust structure of the compressor is capable of avoiding a problem that a valve plate is prone to fatigue damages, while also increasing the operating frequency and a maximum refrigerating capacity of the compressor.

CONCENTRIC VANE COMPRESSOR

A positive displacement device includes a first cylinder, a second cylinder disposed within the first cylinder, and a third cylinder disposed around the first cylinder. An interior surface of the first cylinder and an exterior surface of the second cylinder define an inner cavity. An exterior surface of the first cylinder and an interior surface of the third cylinder define an outer cavity. A partition between the interior surface of the first cylinder and the exterior surface of the second cylinder divides the inner cavity into inner regions, and another partition between the exterior surface of the first cylinder and the interior surface of the third cylinder divides the outer cavity into outer regions. The second cylinder and the third cylinder orbit with respect to the first cylinder to create alternating regions of high pressure and low pressure in the inner regions and the outer regions. 1. A positive displacement device comprising:a first cylinder having a wall with an interior surface and an exterior surface;a vane slidably extending through the wall of the first cylinder, the vane having a first tip and a second tip;a second cylinder disposed within the first cylinder, the second cylinder having an exterior surface, the interior surface of the first cylinder and the exterior surface of the second cylinder defining an inner cavity therebetween, the vane moveable with respect to the second cylinder and in sealing contact between the interior surface of the first cylinder and the exterior surface of the second cylinder to divide the inner cavity into a first inner region and a second inner region, the first tip of the vane in contact with the exterior surface of the second cylinder;a third cylinder disposed around the first cylinder, the third cylinder having an interior surface, the exterior surface of the first cylinder and the interior surface of the third cylinder defining an outer cavity therebetween, the vane moveable with respect to the third cylinder ...

Pump with non-tensioned electrical connection

A pump having an electric motor, wherein the electric motor is fitted to the pump with a flange and has an electrical contact at the end face of the electric motor. The electric motor is covered with a guiding cover which has a groove which extends from the electrical contacts as far as an outlet opening for laying cables. The groove makes at least one radial direction change and a peripheral edge of the guiding cover seals the electric motor with respect to a flange cover of the pump with sealing of the outlet opening.

VACUUM PUMP WITH AN OIL MANAGEMENT SYSTEM

A vacuum pump system includes an air-cooled, O-ring sealed vacuum pump and an oil management system with an LED illuminated clear tank for observation of the oil condition as well as a large oil inlet and outlet for rapid and safe oil changes while the pump is operating. The oil management system is also configured to prevent oil from the sump from being drawn into an evacuated AC/R system when the pump is stopped and the intake ports are not sealed from the high vacuum AC/R system. The oil management system includes a preferential vacuum relief system that allows air instead of the oil from the sump to be drawn back into the evacuated lines. 1. A method of changing the oil in a vacuum pump system comprising the steps of: a vacuum pump with a spring biased oil bottle support platform with a raised and lowered positions and an empty oil bottle having an opening and a removable cap to open and close the opening;', 'an oil management system with an oil reservoir having a cover and a sump with oil, the sump having a drain port with a drain valve, the drain valve having an open and a closed position, the oil management system is optionally enclosed by a closeable oil management door;', 'an oil change reservoir in fluid communication with the oil management system and the vacuum pump, the oil change reservoir sized to contain sufficient oil to support vacuum pump operations while the oil management system is drained and refilled;', 'removing the cap from opening of the empty oil bottle;', 'opening the oil management door;', 'inclining the oil bottle support platform against the bias spring into the lowered position;', 'inserting the empty oil bottle between the support platform and the drain port;', 'raising the oil bottle support platform to the raised position to engage the opening of the empty oil bottle with the drain port;', 'rotating the drain valve to the open position to allow the oil in the sump to drain into the oil bottle;', 'rotating the drain valve into the ...

VANE COMPRESSOR

A rotor of a vane compressor includes vanes that reciprocates in vane slots, coil springs that urge the vanes, and guide members each having a press-in end pressed into the vane and an accommodated end and inserted into the coil spring. When an outer diameter of the guide member is a, an inner diameter of the coil spring is b1, an outer diameter thereof is b2, and an inner diameter an accommodation hole for the coil spring is c, (b1−a)<(c−b2) is satisfied. A diameter of an end (a first contact portion) of the coil spring on a side of the accommodated end is larger than a diameter of another end (a second contact portion) thereof on a side of the press-in end. According to the compressor, contacts between the accommodation hole and the guide member can be prevented without high accuracy forming of the accommodation hole. 1. A vane compressor comprising:a cylinder block in which a cylinder chamber having an oval inner wall on an inner surface thereof is formed; anda rotor rotatably provided in the cylinder chamber, wherein a rotor main body that rotates in the cylinder chamber,', 'a plurality of vanes whose base ends are supported by a plurality of vane slots formed in the rotor main body and that are provided so as to be able to protrude from the rotor main body,', 'coil springs disposed between bottoms of the vane slots and the vanes to urge the vanes toward the oval inner wall, and', 'guide members each of which has a press-in end that is pressed into a bottom of one of the vane and the vane slot and an accommodated end that is to be accommodated in an escape hole provided on a bottom of another of the vane and the vane slot, and is inserted into the coil spring to prevent the coil spring from bending,, 'the rotor includes'}when an outer diameter of the guide member is denoted by a, an inner diameter of the coil spring is denoted by b1, an outer diameter of the coil spring is denoted by b2, and an inner diameter or an inner width of an accommodation portion for the ...

VANE COMPRESSOR

A vane compressor includes a housing having therein a suction chamber, a discharge chamber having a cover, and a rotor chamber, a rotor having therein a plurality of vane slots, and a plurality of vanes. The housing includes a partition that has a first surface forming the other surface of the rotor chamber and a second surface and separates the rotor chamber from the discharge chamber. An intermediate pressure chamber having a pressure that is lower than the discharge chamber and higher than the suction chamber is formed between the partition and the cover. A part of the second surface and a part of a covering surface of the discharge chamber cover are spaced away from each other by the intermediate pressure chamber. The intermediate pressure chamber is disposed so as to overlap at least a part of the other surface of the rotor chamber. 1. A vane compressor comprising:a housing having therein a suction chamber, a discharge chamber, and a rotor chamber;a rotor that is disposed in the rotor chamber so as to be rotatable about an axis of rotation and has therein a plurality of vane slots;a plurality of vanes that is provided in the respective vane slots so as to be slidable in and out of the vane slots; anda plurality of compression chambers formed by one surface of the rotor chamber, an inner peripheral surface of the rotor chamber, the other surface of the rotor chamber, an outer peripheral surface of the rotor, and the vanes, whereinthe housing includes a partition that separates the rotor chamber from the discharge chamber,the partition has a first surface forming the other surface of the rotor chamber and a second surface that is located opposite to the first surface in the direction of the axis of rotation,the discharge chamber has therein a cover that is fixed to the partition and has a covering surface facing the second surface,an intermediate pressure chamber is formed between the partition and the cover, the intermediate pressure chamber spacing a part of ...

CYLINDER-ROTATION-TYPE COMPRESSOR

A cylinder-rotation-type compressor includes a discharge valve that is disposed in a cylinder and configured by a reed valve, a valve body portion that closes a discharge hole provided in the cylinder, and a support portion that couples the valve body portion with a fixing portion fixed to the cylinder. A shape of the valve body portion and a shape of the support portion are substantially symmetrical with respect to a line segment extending in a radial direction of a rotating axis. The valve body portion is disposed on a radially outer side of a connection portion of the fixing portion and the support portion. 1. A cylinder-rotation-type compressor comprising:a rotatable cylinder that includes a cylindrical member which extends in an axial direction of a rotating axis, and a closing member which closes an end of the cylindrical member in the axial direction;a columnar member which is housed inside the cylinder and extends in the axial direction of the rotating axis of the cylinder; anda partition member which is slidably fitted into a groove portion provided in one of the cylinder and the columnar member, and partitions a compression chamber provided between the cylinder and the columnar member, whereinthe closing member includes a discharge hole through which a fluid compressed in the compression chamber flows out of the compression chamber,the cylinder-rotation-type compressor further comprising a discharge valve that limits backward flow of the fluid into the compression chamber through the discharge hole,the discharge valve is a plate-shaped member, and includes a valve body portion that closes the discharge hole, a fixing portion that is fixed to the cylinder, and a support portion that couples the valve body portion with the fixing portion,a shape of the valve body portion and a shape of the support portion are substantially symmetrical with respect to a line segment extending in a radial direction of the rotating axis when viewed from the axial direction of ...

ELECTRIC MOTOR-DRIVEN MOTOR-VEHICLE VACUUM PUMP, AND DRIVE SHAFT FOR A MOTOR-VEHICLE VACUUM PUMP

The invention relates to an electric motor-driven motor-vehicle vacuum pump (), having a drive shaft () which has, in particular, two bearings and extends with a shaft stub () in a rotor () which is connected fixedly to the shaft stub so as to rotate with it. In the rotor, the shaft stub has a centring region () which serves to centre the rotor, without guiding the rotor in the axial direction. 1. An electric motor-driven motor-vehicle vacuum pump , having a drive shaft , which has , in particular two bearings and which extends with a shaft stub into a rotor , which is rotationally fixed to the shaft stub , characterized in that the shaft stub in the rotor comprises a centering area , which serves for centering the rotor without guiding the rotor in an axial direction.2. The electric motor-driven motor-vehicle vacuum pump as claimed in claim 1 , characterized in that the shaft stub in the centering area is spherically formed.3. The electric motor-driven motor-vehicle vacuum pump as claimed in claim 1 , characterized in that the shaft stub in the centering area is arranged with a centering diameter affording virtually no play in a rotor opening.4. The electric motor-driven motor-vehicle vacuum pump as claimed in claim 3 , characterized in that the centering diameter of the shaft stub claim 3 , in relation to an extent of the rotor in an axial direction claim 3 , is arranged substantially centrally in the rotor.5. The electric motor-driven motor-vehicle vacuum pump as claimed in claim 1 , characterized in that the motor-vehicle vacuum pump is designed as a dry-running pump.6. The electric motor-driven motor-vehicle vacuum pump as claimed in claim 1 , characterized in that the motor-vehicle vacuum pump is designed as a vane pump having at least one vane.7. The electric motor-driven motor-vehicle vacuum pump as claimed in claim 1 , characterized in that the rotor opening is designed as a through-hole.8. The electric motor-driven motor-vehicle vacuum pump as claimed in ...

GAS COMPRESSOR

A gas compressor is configured such that a suction-side area that is in sliding contact with the inner circumferential surface of a cylinder chamber when a compression chamber is in the suction stroke has a larger radius of curvature than that of a compression-side area that is in sliding contact with the inner circumferential surface of the cylinder chamber when the compression chamber is in the compression stroke. 1. A gas compressor comprising:a cylinder block in a cylindrical shape, having a cylinder chamber where to compress refrigerant;a rotor rotatably provided in the cylinder chamber, the rotor having an outer circumferential surface facing an inner circumferential surface of the cylinder chamber and a plurality of vane slots opening on the outer circumferential surface with intervals in a rotational direction of the rotor; anda plurality of vanes housed in the respective vane slots and biased in a direction of protruding from the outer circumferential surface, distal end surfaces of the vanes sliding on the inner circumferential surface along with rotation of the rotor, the vanes partitioning a space between the outer circumferential surface and the inner circumferential surface into a plurality of compression chambers in which the refrigerant is sucked and compressed, whereinthe distal end surface of each of the vanes has a suction-side area that is in sliding contact with the inner circumferential surface when the compression chamber separated by the vane having the distal end surface is in a suction stroke, and a compression-side area that is in sliding contact with the inner circumferential surface when the compression chamber separated by the vane having the distal end surface is in a compression stroke,the suction-side area and the compression-side area have smaller radii of curvature than that of the inner circumferential surface, andthe suction-side area has a larger radius of curvature than that of the compression-side area.2. The gas compressor ...

VACUUM PUMP WITH AN OIL MANAGEMENT SYSTEM

A vacuum pump system includes an air-cooled, O-ring sealed vacuum pump and an oil management system with an LED illuminated clear tank for observation of the oil condition as well as a large oil inlet and outlet for rapid and safe oil changes while the pump is operating. The oil management system is also configured to prevent oil from the sump from being drawn into an evacuated AC/R system when the pump is stopped and the intake ports are not sealed from the high vacuum AC/R system. The oil management system includes a preferential vacuum relief system that allows air instead of the oil from the sump to be drawn back into the evacuated lines. 1. A vacuum pump system comprising:a vacuum pump having a volute and at least one bearing wherein the gas input to the vacuum pump is configured to be above the drive shaft when the vacuum pump system is configured to operate;an oil management system in fluid communication with the vacuum pump, the oil management system having a primary oil reservoir with a first volume and an oil change reservoir with a second volume, wherein the primary oil reservoir and the oil change reservoir are in fluid communication with an oil pump, and wherein the first volume is larger than the second volume; andwherein the second volume is smaller than the vacuum pump volute.2. The vacuum pump system of where the oil management system further comprises:an oil pump discharge port in the oil change reservoir operably connected to the oil pump; andwherein the oil change reservoir is configured to allow oil in the oil change reservoir to overflow the volume of the oil change reservoir and flow into the primary oil reservoir and the oil pump is adapted to circulate oil from the primary oil reservoir to the oil change reservoir.3. The vacuum pump system of where the oil management system further comprises:an oil flow path from the oil change reservoir to the at least one bearing in the vacuum pump.4. The vacuum pump system of wherein the oil change ...

Rotary Injection Valve Systems and Apparatus and Methods for Operating the Same

Implementations described herein comprise fluid rotary injection valve systems and apparatus configured to selectively allow a working fluid to pass from one chamber into another where the fluid flow occurs at predetermined times and flow rates. Such fluid rotary injection valve systems can be useful in connection with rotational equipment and particularly for high speed rotational equipment operating with differential internal and external process pressures. 1. An apparatus comprising:a housing having a valve bore defined therein,a rotary injection valve comprising a valve barrel rotatably received therein the valve bore and a valve barrel longitudinal axis, wherein the rotary injection valve further comprises a guide pin located parallel to but in a non-concentric location with respect to the valve barrel longitudinal axis, anda guide cam defining a guide cam slot that is configured to selectively engage and apply a lateral force to the guide pin to cause the valve barrel to selectively rotate about the valve barrel longitudinal axis.2. The apparatus of claim 1 , wherein the rotary injection valve barrel further comprises at least two openings defined therein.3. The apparatus of claim 2 , wherein the rotary injection valve further comprises a first working chamber and a second working chamber claim 2 , and wherein the at least two openings are configured to allow fluid communication between the first working chamber to the second working chamber.4. The apparatus of claim 3 , wherein the at least two openings further comprises at least one inlet passage and at least one outlet passage.5. The apparatus of claim 4 , wherein claim 4 , upon rotation of the valve barrel relative to the valve bore claim 4 , at least one path configured for fluid communication is defined by the at least one inlet passage and the at least one outlet passage.6. The apparatus of claim 5 , wherein the at least one path comprises a plurality of paths that are selectively configured to allow ...

MOTOR VEHICLE VACUUM PUMP HAVING AN ADHESIVE

The invention relates to a motor vehicle vacuum pump having a pump housing surface, on which a noise absorption cap is mounted, said cap defining a noise damping volume. 1. A motor vehicle vacuum pump having a pump housing surface on which a noise absorption cap is mounted , the noise absorption cap defining a noise damping volume , wherein a double-sided adhesive connector is arranged between the pump housing surface and the noise absorption cap , the adhesive connector performing both a sealing function and a fastening function in addition to a noise decoupling function.2. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is formed integrally from a viscoelastic material.3. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is produced from an acrylate.4. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is of annular design.5. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is of almost circular design.6. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector has surfaces for adhesively bonding additional fastening lugs of the pump cover and of the noise absorption cap .7. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is embodied and arranged in such a way that the noise absorption cap is acoustically decoupled from the pump housing cover.8. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector claim 1 , the noise absorption cap and the pump housing surface differ in hardness claim 1 , with the result that the noise absorption cap is vibrationally decoupled from the pump housing cover. This application is a U.S. National Stage of International Application No. PCT/EP2015/053577, filed Feb. 20, 2015 and which claims priority to German ...

Rotating cylinder type compressor

A rotating cylinder type compressor includes: a cylinder having a cylindrical shape and rotating about a central axis; a first rotor and a second rotor each having a cylindrical shape and rotating about an eccentric axis eccentric to the central axis of the cylinder; a shaft; a first vane; and a second vane. The first vane is slidably fitted to a first groove portion defined in the first rotor to define a first compression chamber. The second vane is slidably fitted to a second groove portion defined in the second rotor to define a second compression chamber. The first rotor and the second rotor are arranged in an extending direction of the central axis of the cylinder.

PUMPING METHOD IN A SYSTEM FOR PUMPING AND SYSTEM OF VACUUM PUMPS

The present invention relates to a pumping method in a pumping system (SP, SPP) comprising: a primary lubricated rotary vane vacuum pump () with a gas inlet port () connected to a vacuum chamber () and a gas outlet port () leading into a conduit () before coming out into the gas outlet () of the pumping system (SP, SPP), a non-return valve () positioned in the conduit () between the gas outlet port () and the gas outlet (), and an ejector () connected in parallel to the non-return valve (). According to this method, the primary lubricated rotary vane vacuum pump () is set into action in order to pump the gases contained in the vacuum chamber () through the gas outlet port (). Simultaneously the ejector () is fed with working fluid, and the ejector () continues to be fed with working fluid all the while that the primary lubricated rotary vane vacuum pump () pumps the gases contained in the vacuum chamber () and/or all the while that the primary lubricated rotary vane vacuum pump () maintains a defined pressure in the vacuum chamber (). The present invention also relates to a pumping system (SP, SPP) able to be used to implement this method. 1. Pumping method in a pumping system (SP , SPP) comprising:{'b': 3', '2', '1', '4', '5', '8, 'a primary lubricated rotary vane vacuum pump () with a gas inlet port () connected to a vacuum chamber () and a gas outlet port () leading into a conduit () before coming out into the gas outlet () of the pumping system (SP, SPP),'}{'b': 6', '5', '4', '8, 'a non-return valve () positioned in the conduit () between the gas outlet port () and the gas outlet (), and'}{'b': 7', '6, 'an ejector () connected in parallel to the non-return valve (),'}the method being characterized in that{'b': 3', '1', '4, 'the primary lubricated rotary vane vacuum pump () is set into action in order to pump the gases contained in the vacuum chamber () through the gas outlet port ();'}{'b': '7', 'simultaneously the ejector () is fed with working fluid; and'}{'b ...

VACUUM PUMP

A mechanical automotive vacuum pump includes a housing with a housing cylindrical bearing surface. A pumping chamber is arranged in the housing. A pump rotor which includes a rotor body having a rotor body bearing section and a chamber section is rotatably supported by the housing. A radial vane slit is arranged at the chamber section. A rotor body cylindrical bearing surface is arranged at the rotor body bearing section. The rotor body bearing section includes a circular lubrication ring groove. A radially shiftable pump vane is supported in the radial vane slit. A friction bearing is defined by the rotor body cylindrical bearing surface and the housing cylindrical bearing surface. The housing cylindrical bearing surface includes a lubrication inlet opening which lies in a same transversal plane as and opposite to the circular lubrication ring groove. The lubrication inlet opening is directly connected to a lubricant pump connector. 111-. (canceled)12. A mechanical automotive vacuum pump comprising:a housing comprising a housing cylindrical bearing surface;a pumping chamber arranged in the housing; wherein,', 'a radial vane slit is arranged at the chamber section,', 'a rotor body cylindrical bearing surface is arranged at the rotor body bearing section, and', 'the rotor body bearing section comprises a circular lubrication ring groove;, 'a pump rotor configured to be rotatably supported by the housing, the pump rotor comprising a rotor body which comprises a rotor body bearing section and a chamber section,'}a pump vane configured to be radially shiftable, the pump vane being supported in the radial vane slit;a friction bearing defined by the rotor body cylindrical bearing surface and the housing cylindrical bearing surface; anda lubricant pump connector,wherein,the housing cylindrical bearing surface comprises a lubrication inlet opening which is arranged to lie in a same transversal plane as and opposite to the circular lubrication ring groove, andthe lubrication ...

ROTARY DEVICE INCLUDING A COUNTERBALANCED SEAL ASSEMBLY

A rotary device is provided. The rotary device includes a housing having a cylindrical inner surface and a rotor assembly mounted for rotation in the housing. The rotor assembly includes a rotor, at least one rocker pivotally coupled to the rotor, and a counterbalanced seal assembly. The rotor includes a central portion and a plurality of arms extending radially outward from the central portion. Each arm has a distal end disposed for sliding engagement with the inner surface. Pivoting of the rocker causes the rotor to rotate. The counterbalanced seal assembly is disposed at the distal end of at least of one of the arms, and includes a seal and a counterweight mechanism. The counterweight mechanism is configured to control a contact pressure exerted by the seal on the inner surface resulting from rotation of the rotor. 1. A rotary device comprising:a housing having a cylindrical inner surface; a rotor comprising a central portion and a plurality of arms extending radially outward from said central portion, each arm having a distal end disposed for sliding engagement with said inner surface;', 'at least one rocker pivotally coupled to said rotor for pivoting between a first position spaced from said inner surface of said housing and a second position adjacent said inner surface of said housing, wherein pivoting of said rocker causes said rotor to rotate; and', 'a counterbalanced seal assembly disposed at the distal end of at least of one of said arms, said counterbalanced seal assembly comprising a seal and a counterweight mechanism configured to control a contact pressure exerted by said seal on said inner surface resulting from rotation of said rotor., 'a rotor assembly mounted for rotation in said housing, said rotor assembly comprising2. A rotary device in accordance with claim 1 , wherein said counterweight mechanism includes a counterweight and a lever extending away from said counterweight claim 1 , said lever engaging said seal to control radial displacement ...

ROTARY DEVICE INCLUDING A COUNTERBALANCED SEAL ASSEMBLY

A rotary device is provided. The rotary device includes a housing having an inner surface and a rotor assembly mounted for rotation in the housing about an axis defining an axial direction of the rotary device. The rotor assembly includes a rotor and a seal assembly. The rotor includes a central portion and a plurality of arms extending radially outward from the central portion. Each arm has a distal end disposed for sliding engagement with the inner surface, and at least one of the arms has a channel defined therein. The seal assembly is disposed within the channel, and includes a seal, a base defining a seal channel configured to receive the seal, and a counterweight mechanism pivotally coupled to the base. The counterweight mechanism is configured to control a contact pressure exerted by the seal on the inner surface resulting from rotation of the rotor. 1. A rotary device comprising:a housing having an inner surface; and a rotor comprising a central portion and a plurality of arms extending radially outward from said central portion, each arm having a distal end disposed for sliding engagement with said inner surface, at least one of said arms having a channel defined therein; and', a seal;', 'a base defining a seal channel configured to receive said seal; and', 'a counterweight mechanism pivotally coupled to said base, said counterweight mechanism configured to control a contact pressure exerted by said seal on said inner surface resulting from rotation of said rotor., 'a seal assembly disposed within the channel, said seal assembly comprising], 'a rotor assembly mounted for rotation in said housing about an axis defining an axial direction of said rotary device, said rotor assembly comprising2. A rotary device in accordance with claim 1 , wherein said seal assembly is configured to slide in the axial direction within the channel defined in said at least one arm.3. A rotary device in accordance with claim 1 , wherein said seal is configured to slide ...

Rotor Assembly for Rotary Compressor

Implementations of the present invention comprise a rotor assembly for use in a rotary compressor. The rotor assembly includes a shaft, a pair of end plates, an input shaft, and a rotor. The rotor can be positioned between the pair of endplates. At least two of these components can be machined or formed as an integral unit, to increase the geometrical precision and integrity of the rotor assembly. For example, the rotor and input shaft can be formed integrally; alternatively, one of the endplates and the input shaft can be formed integrally. A pair of liners can be provided and positioned between the endplates and the rotor to increase sliding and/or sealing performance against other components of the rotary compressor, such as a gate positioned in a bore of the rotor. 1. A rotor assembly comprising:a shaft;a first end plate and a second endplate; anda rotor; andan input shaft,wherein the rotor and the input shaft are machined as an integral unit; andwherein the rotor is positioned between the first and second end plates.2. The rotor assembly of claim 1 , wherein the first end plate and the input shaft are machined as an integral unit.3. The rotor assembly of claim 1 , further comprising a first liner positioned between the first end plate and the rotor4. The rotor assembly of claim 3 , wherein the liner is a first liner and further comprising a second liner positioned between the second end plate and the rotor.5. The rotor assembly of claim 3 , wherein the liner comprises a ceramic disk.6. The rotor assembly of claim 3 , wherein the liner is formed from PTFE.7. A rotor assembly comprising:a shaft;a first end plate and a second endplate; anda rotor; andan input shaft,wherein the first end plate and the input shaft are machined as an integral unit; andwherein the rotor is positioned between the first and second end plates.8. The rotor assembly of claim 7 , wherein the rotor and the input shaft are machined as an integral unit.9. The rotor assembly of claim 7 , ...

GAS COMPRESSOR

A gas compressor which can be efficiently reduced an oscillation (damping) generated in a housing even if the oscillation generated in a cylinder is directly propagated to the housing during operating, is provided. Each of ribs (and ) extending from each of fitting units to the vicinity of a position where an outer surface of a rear side block () of a compressing mechanism unit () received in the housing () are fitted (pressingly fitted) to an inner surface of the housing, are integral formed on the outer surface of the housing (). 1. A gas compressor , comprising:a substantially cylindrical housing which has an opening at a first end thereof and is closed at a second end;a front head which covers an end face of the opening of the housing;a compressing mechanism unit which is fixed in the front head at a first end, is received in the housing excluding a portion of the first end, and exhausts a compressed high pressure medium to an exterior by rotating a rotating axis due to a driving force from a driving source;a fitting unit which is formed on an outer surface at the end face of the opening of the housing and is fixed to an external structure member; andat least one rib,wherein an outer surface of a second end of the compressing mechanism unit is fixed to be pressingly fitted to an inner surface of the housing, and the at least one rib which extends from the fitting unit to a position where the second end of the compressing mechanism unit on the outer surface of the housing is pressingly fitted to the inner surface of the housing, is integral formed with the outer surface of the housing.2. The gas compressor according to claim 1 , wherein one of the ribs which have even number of the ribs is arranged to face the other of them.3. The gas compressor according to claim 1 , wherein the rotating axis is retained so as to be rotatable along a longitudinal direction of the housing in the center portion of the compressing mechanism unit claim 1 ,the fitting unit is formed ...

VACUUM PUMP AND SYSTEM OF A VACUUM PUMP AND AN ENGINE

A vacuum pump suitable for mounting to an engine includes a casing, a cavity in the casing having with an inlet and an outlet, a moveable member arranged for rotation inside the cavity, wherein the movable member is movable to draw fluid into the cavity through the inlet and out of the cavity through the outlet so as to induce a reduction in pressure at the inlet, an oil supply conduit for supplying oil from a reservoir to the cavity, and a check valve having a check valve body arranged in the oil supply conduit. The check valve meters the oil flow to the cavity dependent on an oil pressure so that on exceeding an upper oil pressure threshold the supply of oil to the cavity is stopped by means of the check valve. 1. A vacuum pump suitable for mounting to an engine , comprising:a casing;a cavity in the casing having with an inlet and an outlet; anda moveable member arranged for rotation inside the cavity wherein the movable member is movable to draw fluid into the cavity through the inlet and out of the cavity through the outlet so as to induce a reduction in pressure at the inlet;an oil supply conduit for supplying oil from a reservoir to the cavity; anda check valve having a check valve body arranged in the oil supply conduit,wherein the check valve meters the oil flow to the cavity dependent on an oil pressure so that on exceeding an upper oil pressure threshold the supply of oil to the cavity is stopped by means of the check valve.2. The vacuum pump as claimed in claim 1 , wherein the check valve meters the oil flow to the cavity dependent on the oil pressure so that on falling below a lower oil pressure threshold the oil flow is stopped by means of the check valve.3. The vacuum pump as claimed in claim 1 , wherein the check valve body is movable between a first closed position claim 1 , an open position claim 1 , and a second closed position claim 1 , andwherein the check valve body is located in the first closed position when the oil pressure is lower than a ...

VACUUM PUMP OF LIGHTWEIGHT CONSTRUCTION

A vacuum pump having a housing composed of light metal, in which a rotor composed of light metal is rotatably mounted. The rotor driving at least one vane, wherein the rotor is composed of light metal and has at least three different diameters along the axis of rotation thereof. 1. A vacuum pump having a housing composed of light metal , in which a rotor composed of light metal is rotatably mounted , said rotor driving at least one vane , wherein the rotor is composed of light metal and has at least three different diameters along the axis of rotation thereof.2. The vacuum pump according to claim 1 , wherein the rotor has a step which divides a bearing region from a sealing region.3. The vacuum pump according to claim 2 , wherein the step has an axial bearing surface and a radial and an axial sealing surface.4. The vacuum pump according to claim 1 , wherein the rotor has a reinforcing collar.5. The vacuum pump according to claim 1 , wherein the housing contains a sintered bushing as a bearing for the rotor.6. The vacuum pump according to claim 5 , wherein the sintered bushing has a cylindrical radial sintered bearing and a collar as an axial sintered bearing.7. The vacuum pump according to claim 6 , wherein the sintered bushing is a deep-drawn part or a turned part. This application claims the benefit and priority of German Application No. DE102015216104.8 filed Aug. 24, 2015. The entire disclosure of the above application is incorporated herein by reference.The invention relates to a vacuum pump of lightweight construction having aluminium components.This section provides background information related to the present disclosure which is not necessarily prior art.A vacuum pump having a drivable rotor, by means of which at least one vane in a housing can be made to rotate, is known from international publication WO 01/48381 A2. The rotor and/or the vane consist/s of aluminium or of an aluminium alloy. The rotor is produced by machining and by forming without ...

Vane pump

A vane pump including a housing having a peripheral wall portion, a bottom wall portion, and a pump chamber; a rotor disposed in the pump chamber to be rotatable; a vane disposed to be slidable in the radial direction with respect to the rotor and partitioning the pump chamber into working chambers; and a reed valve that opens and closes a discharge hole of the bottom wall portion. A pressure relief groove is disposed in a portion of the bottom wall portion corresponding to the discharge section with a clearance secured between the peripheral wall portion and the pressure relief groove. When the vane overlaps the pressure relief groove, a pair of the working chambers on both sides of the vane in the rotational direction communicates with each other via the pressure relief groove.

VANE PUMP

A vane pump includes: a casing forming a pump chamber therein; a rotor arranged inside the casing to rotate eccentrically with respect to the casing; and a plurality of vanes configured to rotate with the rotor and slide on an inner side surface of the casing. At least one of Formula (1): I≤(b/a)×k and Formula (2): I≤(c/a)×j is satisfied, where “a” represents a height of the pump chamber, “b” represents a height of the rotor, “c” represents a height of the vane in a rotation axis direction of the rotor, and where “I” represents a linear expansion coefficient of the casing in the rotation axis direction, “k” represents a linear expansion coefficient of the rotor in the rotation axis direction, and “j” represents a linear expansion coefficient of the vane in the rotation axis direction. 1. A vane pump comprising:a casing forming a pump chamber therein;a rotor arranged inside the casing to rotate eccentrically with respect to the casing; anda plurality of vanes configured to rotate with the rotor and slide on an inner side surface of the casing, whereinat least one of Formulas (1) and (2) is satisfied,Formula (1): I≤(b/a)×k, andFormula (2): I≤(c/a)×j,wherein “a” represents a height of the pump chamber in a rotation axis direction of the rotor,wherein “b” represents a height of the rotor in the rotation axis direction,wherein “c” represents a height of the vane in the rotation axis direction,wherein “I” represents a linear expansion coefficient of the casing in the rotation axis direction,wherein “k” represents a linear expansion coefficient of the rotor in the rotation axis direction, andwherein “j” represents a linear expansion coefficient of the vane in the rotation axis direction.2. The vane pump according to claim 1 , further satisfying at least one of Formulas (3) and (4) claim 1 ,Formula (3): I≥0.9×(b/a)×k, andFormula (4): I≥0.9×(c/a)×j.3. A vane pump comprising:a casing forming a pump chamber therein;a rotor arranged inside the casing to rotate eccentrically ...

COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

A compressor for use in a refrigerant circuit using a refrigerating machine oil being free of phosphoric ester and a refrigerant mixture inclusive of 1,1,2-trifluoroetylene includes a rolling piston and a vane in contact with the rolling piston in a slidable manner. The rolling piston and the vane are formed of a base metal, the base metal being steel, and the base metal is exposed at a contact portion between the rolling piston and the vane 1. A compressor for use in a refrigerant circuit using a refrigerating machine oil being free of phosphoric ester and a refrigerant mixture inclusive of 1 ,1 ,2-trifluoroetylene , the compressor comprising:a first member formed of a base metal, the base metal being steel, the first member including a first contact portion; anda second member including a second contact portion being in contact with the first contact portion of the first member in a slidable manner, whereinthe base metal of the first member is exposed at the first contact portion.2. The compressor of claim 1 , further comprising:a cylinder including a compression chamber;a rolling piston rotating in the compression chamber; anda vane separating the compression chamber into two spaces, the vane having an edge being in contact with an outer peripheral surface of the rolling piston,wherein at least one of the rolling piston and the vane is the first member.3. A refrigeration cycle apparatus comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a refrigerant circuit including the compressor of ;'}a refrigerant mixture inclusive of 1,1,2-trifluoroethylene and used in the refrigerant circuit; anda refrigerating machine oil being free of phosphoric ester and used in the refrigerant circuit.4. The refrigeration cycle apparatus of claim 3 , wherein no anti-wear agent is added to the refrigerating machine oil.5. The refrigeration cycle apparatus of claim 3 , wherein the refrigerating machine oil has a saturated water content of 1000 wt ppm or more.6. The ...

Displacement pump

To provide a displacement pump that can be assembled while properly maintaining side clearances. The displacement pump (100, 101, 102, 103, 104, 105) of the present invention for sucking and discharging a fluid such as gasoline vapor by changing pressure in a space constituted by an outer peripheral surface of a rotor (1) and an inner wall surface of a casing (2), comprising a side clearance adjusting member (4), rotating with respect to the pump main body (6), for moving a shaft (3) integrally formed with the rotor (1) in an axial direction of the shaft (3).

EMBEDDED PERMANENT MAGNET-TYPE ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATION/AIR-CONDITIONING DEVICE

Provided is an interior permanent magnet motor, including: a rotor including a plurality of permanent magnets; and a stator. The rotor further includes a rotor core. The rotor core has a plurality of magnet insertion holes. A plurality of slits are formed in a region of the rotor core, which is located on a radially outer side of the magnet insertion holes. At least two of the slits are formed so that a core region sandwiched between the two slits has a portion increased toward the radially outer side. 1. An interior permanent magnet motor , comprising:a rotor comprising a plurality of permanent magnets; anda stator,wherein the rotor further comprises a rotor core,wherein the rotor core has a plurality of magnet insertion holes,wherein a plurality of slits are formed in a region of the rotor core, which is located on a radially outer side of the magnet insertion holes, andwherein at least two of the slits are formed so that a core region sandwiched between the two slits has a portion increased toward the radially outer side.2. An interior permanent magnet motor according to claim 1 ,wherein the plurality of slits comprise first portions, respectively,wherein each of the first portions is spaced away from a corresponding magnetic pole center line, and is located in the slit at a position close to the magnetic pole center line and a rotor outer peripheral surface, andwherein a distance from the magnetic pole center line to the each of the first portions becomes larger as approaching from a radially inner side to the radially outer side.3. An interior permanent magnet motor according to claim 1 ,wherein an outermost end of the each of the slits is located on an outer side of a width center line of the each of the slits.4. An interior permanent magnet motor according to claim 1 ,wherein each of the permanent magnets is curved into an arc shape, andwherein the each of the permanent magnets is arranged so that a convex portion side of the arc shape is located on a center ...

Prime Mover Assemblies and Methods

Prime movers are provided that can include: a pair of cylindrical members about a center rod, a fixed member about the center rod between the pair of cylindrical members; wherein the pair of cylindrical members rotate with the center rod in relation to the fixed member; a housing extending between the cylindrical members; and a plurality of chambers between the opposing bases of the cylindrical members and the fixed member. Methods for rotating members in relation to a fixed member are also provided. The methods can include rotating a pair of cylindrical members in relation to a fixed member about a center rod along a shared axis within a housing extending between the pair of cylindrical members.

Negative Pressure Pump and Cylinder Head Cover

A negative pressure pump has: a housing; a rotating shaft having a shaft portion, and a supporting portion ; a vane that is supported at the supporting portion so as to freely move reciprocally in a direction orthogonal to the rotating shaft, and that rotates integrally with the rotating shaft, and whose end portions slide on an inner wall surface, and that sections an interior of the housing into plural spaces; an intake portion that is formed in the housing; a discharging portion that is formed further toward a vane rotating direction downstream side than the intake portion; and a concave portion that is formed in a bottom surface between the discharging portion and a curved surface in a vane rotating direction, and that communicates with a circular hole, and guides the lubricant, that is moved by the vane, to the circular hole.

OIL-LUBRICATED ROTARY VANE VACUUM PUMP

An oil-lubricated rotary vane vacuum pump includes a rotary vane unit, having a rotary vane chamber and a rotary vane rotor, and an oil separator device having an air/oil separating unit that has a filter element with a plug-in ring that can be plug-connected on a housing side. The plug-in ring is designed for radial sealing and axial displaceability in a housing receptacle. The filter element has a moulding for bayonet mounting, which faces the end associated with the outer wall. A mounting wall of the housing, extending at a distance from the outer wall of the housing, is designed to interact with the moulding of the filter element and to form the bayonet mounting. A separate cover closes a mounting opening associated with the filter element in the outer wall of the housing. The cover form-fittingly interacts with the filter element to secure the filter element against rotation. 110-. (canceled)11. An oil-lubricated rotary vane vacuum pump comprising:a rotary vane unit having a rotary vane chamber and a rotary vane rotor,an oil separator device having a housing and being configured for separating gas and oil, by an air/oil separating element,wherein the air/oil separating element has a filter element which has a plug-in ring at an end that can be plug-connected on a housing side to the rotary vane unit, which plug-in ring is designed for radial sealing and axial displaceability in an associated housing receptacle, and the filter element has a moulding for bayonet mounting, which moulding faces an end associated with an outer wall of the housing,wherein a mounting wall of the housing, extending at a distance from the outer wall of the housing, is designed to interact with the moulding of the filter element and to form the bayonet mounting,wherein a separate cover is provided, which permits a mounting opening, associated with the filter element, in the outer wall of the housing to be closed, and wherein the cover form-fittingly interacts with the filter element to ...

VANE PUMPS

A rotor for a pump includes a rotor body, an undervane cavity defined in the rotor body configured to accept an underside of a vane, an outer surface on a periphery of the rotor body for defining overvane cavities within a liner as a function of an inner cammed surface of the liner, and a pressure balance aperture defined in the rotor body fluidly connecting the undervane cavity to at least one of the outer surface. 1. A pump , comprising:a liner, wherein the liner includes an inner cammed surface;a rotor disposed within the liner and configured to rotate therein, the rotor including an undervane cavity and an outer surface for defining overvane cavities within the liner as a function of the inner cammed surface, wherein the rotor includes a pressure balance aperture defined therein fluidly connecting the undervane cavity to the outer surface; anda plurality of vanes disposed in the rotor and in contact with the cammed surface within the liner, a follower portion of the vanes extending from the rotor radially outwardly and an underside of the vanes extending at least partially into the undervane cavity, wherein the vanes circumferentially define cavities of differing sizes therebetween within the liner in conjunction with the inner cammed surface of the liner and the outer surface of the rotor.2. The pump of claim 1 , further including a plurality of pressure balance apertures defined in the rotor in communication with the undervane cavity.3. The pump of claim 1 , further including a plurality of vanes and undervane cavities.4. The pump of claim 3 , further including a plurality of pressure balance apertures defined in the rotor for each undervane cavity.5. The pump of claim 1 , wherein the outer surface includes an axially asymmetric shape.6. The pump of claim 1 , wherein the outer surface includes a smooth shape.7. A rotor for a pump claim 1 , comprising:a rotor body;an undervane cavity defined in the rotor body configured to accept an underside of a vane;an outer ...

Electric compressor

An electric compressor includes an inverter housing accommodating an inverter, a compressor housing accommodating a compression mechanism and an electric motor, and a seal member having an annular shape and interposed between an end surface of a peripheral wall of the compressor housing and an end surface of the inverter housing. The compressor housing has the peripheral wall in which the inverter is disposed. The seal member is retained to the inverter housing by a retaining structure which is disposed inside the peripheral wall of the compressor housing. The retaining structure includes a first projection and a second projection. The first projection is formed on the seal member and projects radially inward. The second projection is formed on the inverter housing. The first projection is located between the second projection and the end surface of the inverter housing so as to restrict movement of the seal member in a direction.

In-vehicle motor-driven compressor

An in-vehicle motor-driven compressor includes a common mode choke coil. The common mode choke coil includes an annular core having a through-hole, a first winding and a second winding wound around the core, and a coated conductive wire. The second winding is opposed to the first winding while being spaced apart from the first winding. The coated conductive wire is wound around the core so as to surround the first winding, the second winding, and the core. The coated conductive wire has sections that are opposed to each other with the through-hole in between. An electric wire of the coated conductive wire is wound multiple turns around the core so as to at least partly overlap with the first and second windings. Both ends of the electric wire are electrically connected to each other. The core includes an exposed section that is not covered with the coated conductive wire.

Compressor Having Oil-Level Sensing System

A compressor may include a shell containing a motor, a compression mechanism and a lubricant sump. The compressor may also include first and second temperature sensors, and a control module. The first temperature sensor may be at least partially disposed within the lubricant sump and may measure a first temperature of a lubricant at a first position. The second temperature sensor may be at least partially disposed within the lubricant sump and may measure a second temperature of the lubricant at a second position that is vertically higher than the first position. The control module is in communication with the first and second temperature sensors. The control module may determine a first difference between the first temperature and the second temperature. The control module may determine whether a liquid level of the lubricant in the lubricant sump is below a predetermined level based on the first difference. 1. A compressor comprising:a shell including a motor, a compression mechanism and a lubricant sump;a first temperature sensor at least partially disposed within said lubricant sump and configured to measure a first temperature of a lubricant at a first position;a second temperature sensor at least partially disposed within said lubricant sump and configured to measure a second temperature of said lubricant at a second position that is vertically higher than said first position; anda control module in communication with said first and second temperature sensors, said control module configured to determine a first difference between the first temperature and the second temperature, said control module configured to determine whether a liquid level of said lubricant in said lubricant sump is below a predetermined level based on said first difference.2. The compressor of claim 1 , wherein a vertical height of said second position is equal to a vertical height of said predetermined level.3. The compressor of claim 1 , wherein said predetermined level equals a ...

VACUUM PUMP

In the vane pump comprising the housing, the vane, and the cap, the sliding surface of the cap is configured as arc shape in the view from the rotational axis direction and the width toward the sliding direction of the cap is configured to be smaller than the width at the sliding angle field which is virtual area for contacting the inner surface of the pump room among the circumference including the arc shape of the sliding surface of the cap and to be bigger than the width at the high loading area where the load added to the sliding surface which is bigger than the predetermined value among the sliding angle field. 1. A vacuum pump comprising ,a housing which has a pump room inward,a vane which is disposed in the pump room and rotated by a rotor and divides the pump room to workspaces, anda cap in which a sliding surface slid on inner surface of the pump room is configured and which is attached at the tip of the vane,wherein the sliding surface of the cap is configured as arc shape in the view from the rotational axis direction, andwherein the width toward the sliding direction of the cap is configured to be smaller than the width at the sliding angle field which is virtual area for contacting the inner surface of the pump room among the circumference including the arc shape of the sliding surface of the cap and configured to be bigger than the width at the high loading area where the load added to the sliding surface which is bigger than the predetermined value among the sliding angle field.2. The vacuum pump according to claim 1 ,wherein the width of the vane is configured to be equal to the width toward the sliding direction of the cap. The present invention relates to a vacuum pump attached to an engine body.Conventionally, a vane type vacuum pump which is used as a vacuum pump for a car is known (Patent Literature 1). The conventional vacuum pump is configured to provide lubrication oil to a sliding part of a rotor which rotates in pump room of the housing and ...

DEVICE FOR DAMPING PRESSURE FLUCTUATIONS

A device (DV) for damping pressure fluctuations in a pressure medium (DM) comprises the following features. It has a base body (GK) in which an intake chamber (AK) is provided, which has an intake-chamber opening (OA) which is located at a first side (S) of the base body. A first expansion chamber (EK) is furthermore provided in the base body, which has a first expansion-chamber opening (OE), which is likewise located at the first side of the base body. A partition wall (T) separates the intake chamber from the first expansion chamber. A cover element (AD) for positioning on a contact surface (AF) of the first side of the base body is furthermore provided in order to close the intake chamber and the first expansion chamber to the outside. Finally, an overflow channel is provided, in particular in the partition wall between the intake chamber and the first expansion chamber, so that pressure fluctuations in the pressure medium are damped during the through-flow from the intake chamber through the first overflow channel into the first expansion chamber. 1. A device for damping pressure fluctuations in a pressure medium , comprising:a base body, anda cover positioned on a contact surface of a first side of the base body;the base body and the cover defining an intake chamber,a boundary of the intake chamber sized and configured to be struck by a pressure medium flow, the boundary comprising an impact surface having a predetermined structure sized and configured to deflect the pressure medium flow.2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. The device as claimed in claim 1 , further comprising a filter element configured to filter out particles from the pressure medium claim 1 , wherein the filter element is disposed in the intake chamber.7. The device as claimed in claim 1 , wherein the contact surface of the first side lies in a plane claim 1 , and wherein the cover has a planar portion which can be brought into contact with the contact surface.8. The device ...

HERMETIC COMPRESSOR

A hermetic compressor is provided that may include a vane that is inserted into a roller, rotates with the roller, and is pushed out toward an inner circumference of a cylinder by rotation of the roller to divide the compression chamber into a plurality of spaces. The vane may include a body having a sealing surface that contacts the inner circumference of the cylinder and inserted into the roller; and a guide that extends from an axial end of the body in a direction crossing a direction the vane slides out, and that is slidably inserted into a guide groove formed on at least one of the first bearing or the second bearing to restrain the vane from sliding out of the roller toward the inner circumference of the cylinder. 1. A hermetic compressor , comprising:a cylinder, an inner circumference of which is elliptical and forms a compression chamber;a first bearing and a second bearing provided on both sides of the cylinder and forming a compression chamber together with the cylinder;a roller that is attached to a rotary shaft supported by the first and second bearings, eccentric to the inner circumference of the cylinder, and varies a volume of the compression chamber while rotating; and a vane body inserted into the roller and having a sealing surface that contacts the inner circumference of the cylinder; and', 'a guide that extends from an axial end of the vane body in a direction crossing a direction in which the vane slides out of the roller, wherein the guide is slidably inserted into a guide groove formed on at least one of the first bearing or the second bearing to restrain the vane from sliding out of the roller toward the inner circumference of the cylinder, wherein the guide includes a first guide portion and a second guide portion which extend to either side, respectively, with respect to the vane body, and wherein a circumferential length of the second guide portion is longer than a circumferential length of the first guide portion with respect to a ...

LUBRICANT RECEPTACLE

A lubricant receptacle for a vacuum pump is provided. The lubricant receptacle comprises a lubricant reservoir, a lubricant separator and an exhaust. A first gas connection is provided between a gas outlet of the lubricant reservoir and a gas inlet of the lubricant separator. For connecting a gas inlet of the lubricant reservoir with the vacuum pump, a second gas connection is provided, while a first lubricant connection is provided for connecting a lubricant outlet of the lubricant reservoir with the vacuum pump. Further, another lubricant connection is provided between a lubricant outlet of the lubricant separator and the lubricant outlet of the lubricant reservoir and/or an additional lubricant connection for connecting the lubricant outlet of the lubricant separator with the vacuum pump is provided. At least one of the gas connections and one of the lubricant connections is selectively coupleable. Furthermore, a vacuum pump system having such a lubricant receptacle and a vacuum pump is provided. 1. Lubricant receptacle for a lubricant-sealed vacuum pump comprising a lubricant reservoir having a gas inlet , a gas outlet , a lubricant outlet , as well as a lubricant inlet;a lubricant separator having a gas inlet, a gas outlet and a lubricant outlet;an exhaust connected in a gas-carrying manner with the gas outlet of the lubricant separator;a first gas connection between the gas outlet of the lubricant reservoir and the gas inlet of the lubricant separator;a second gas connection for connecting the gas inlet of the lubricant reservoir with the vacuum pump;a first lubricant connection for connection of the lubricant outlet of the lubricant reservoir with the vacuum pump;as well asa further lubricant connection between the lubricant outlet of the lubricant separator and the lubricant inlet of the lubricant reservoir and/or an additional lubricant connection for the connection of the lubricant outlet of the lubricant separator with the vacuum pump;wherein at least one ...

AUTOMOTIVE VACUUM PUMP

A vacuum pump for pumping a gas includes a pump housing which defines a pump cavity, a shiftable vane, a pump rotor body, a separate axial rotor retaining arrangement, and a radial friction bearing. The pump housing includes a closed housing wall. The pump rotor body includes a vane slit which supports the shiftable vane to define rotating pumping chambers, an axial low-pressure end which is axially supported by the closed housing wall so that a gas pressure inside the pumping chambers is present at the low-pressure end, and an axial high-pressure end. The pump housing is fluidically open at the axial high-pressure end so that atmospheric pressure is present. The axial rotor retaining arrangement includes a retaining sheet body arranged in a transversal plane which axially in part blocks the axial high-pressure end. The radial friction bearing is arranged axially between the vane slit and the axial high-pressure end. 111-. (canceled)12. An automotive vacuum pump for pumping a gas , the automotive vacuum pump comprising:a pump housing configured to define a pump cavity, the pump housing comprising a closed housing wall;a shiftable vane; at least one vane slit which is configured to support the shiftable vane so as to define at least two rotating pumping chambers,', 'an axial low-pressure end which is axially supported by the closed housing wall so that a gas pressure inside the at least two rotating pumping chambers is present at the low-pressure end of the pump rotor body, and', 'an axial high-pressure end,', 'the pump housing being configured to be fluidically open at the axial high-pressure end so that atmospheric pressure is present at the axial high-pressure end;, 'a pump rotor body comprising,'}a separate axial rotor retaining arrangement comprising a separate retaining sheet body which is arranged in a transversal plane and which is configured to axially block at least partially the axial high-pressure end of the pump rotor body; anda radial friction bearing ...

VANE PUMP AND FUEL VAPOR LEAKAGE DETECTION DEVICE USING THE SAME

A first plate portion covers one opening of a pump chamber of a tubular portion, and a second plate portion covers the other opening of the pump chamber along a center axis of the tubular portion. A hole forming portion is equipped to an outside of the tubular portion to form a connection hole. A length of the hole forming portion along the center axis is less than or equal to a length of the tubular portion along the center axis. A first imaginary line connects a center of an outer opening of the connection hole with a point on the center axis. The first imaginary line intersects perpendicularly with the center axis. A length of the connection hole in a direction perpendicular to both the first imaginary line and the center axis is greater than a length of the connection hole along the center axis. 1. A vane pump comprising:a pump chamber;a housing having one communication hole, an other communication hole, which is different from the one communication hole, and a first connection hole, the one communication hole configured to communicate with the pump chamber, the other communication hole configured to communicate with the pump chamber, the first connection hole communicating an outside of the housing with one of the one communication hole and the other communication hole;a rotor rotational in the pump chamber, the rotor including a plurality of vanes configured to slide on an inner wall of the housing, the inner wall forming the pump chamber; anda motor configured to rotate the rotor, whereinthe housing includes a tubular portion, a first plate portion, a second plate portion, and a first connection hole forming portion,the first plate portion covers one opening of the pump chamber in a direction of a center axis of the tubular portion,the second plate portion covers an other opening of the pump chamber in the direction of the center axis,the first connection hole forming portion is equipped to a radially outside of the tubular portion to form the first ...

ROTOR, PERMANENT-MAGNET-EMBEDDED MOTOR, AND COMPRESSOR

An end of each of slits of a rotor on a magnet insertion hole side has a triangular shape. A slit inner-side line of each of the slits includes an apex and a pair of side ends. An interval between each of the pair of side ends and the magnet insertion hole is larger than an interval between the apex and the magnet insertion hole, and an interval between the apex and the magnet insertion hole is larger than a plate thickness of each of steel plates forming a rotor core. 1. A rotor , comprising:a rotor core;anda plurality of permanent magnets,wherein the rotor core is formed by laminating a plurality of steel plates,wherein the rotor core has a plurality of magnet insertion holes,wherein at least one slit is formed between an outer peripheral surface of the core and an outer-side line of at least one of the magnet insertion holes,wherein an end of the slit on the magnet insertion hole side has a triangular shape as viewed in a plane having a rotation center line as a normal, andwherein the triangular shape projects toward the magnet insertion hole side.2. A rotor according to claim 1 , wherein the end of the slit on the magnet insertion hole side has an isosceles triangular shape.3. A rotor according to claim 1 , wherein the plurality of permanent magnets and the plurality of magnet insertion holes are each formed into an arc shape that is convex toward a center side of the rotor.4. An interior permanent magnet motor claim 1 , comprising:a stator; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the rotor of , which is rotatably arranged so as to be opposed to the stator.'}5. A compressor claim 1 , comprising claim 1 , in an airtight container:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the interior permanent magnet motor of ; and'}a compression element.6. A rotor according to claim 1 , an apex of the triangular shape;', 'two sides of the triangular shape, which form the apex; and', 'a pair of side ends being ends opposite to the apex of the two respective ...

INTEGRATED PRESSURE PLATE AND PORT PLATE FOR PUMP

An integrated pressure plate and port plate, and method of forming same, for a pump includes a housing having a pumping chamber formed therein. The housing includes first and second metal pressure plate portions that form at least a portion of the pumping chamber wherein at least one of the first and second pressure plate portions has a hard coating formed of a different material than a remainder of the housing metal on a surface thereof where integrated ports are formed on surface(s) of the pressure plate portion(s). Surface irregularities relieve stresses and promote adhesion of the coating (e.g., tungsten carbide) to the underlying metal (aluminum alloy). 1. A pump assembly comprising:a housing having a pumping chamber formed therein, the housing including first and second metal pressure plate portions that form at least a portion of the pumping chamber wherein at least one of the first and second pressure plate portions has a hard coating formed of a different material than a remainder of the housing metal on a surface thereof where integrated ports are formed in surfaces of the pressure plate portions; anda rotor received in the pumping chamber for rotation relative to the housing.2. The pump assembly of wherein the each of the first and second pressure plate portions includes the hard coating that forms at least a portion of the pumping chamber.3. The pump assembly of wherein the coating is tungsten carbide.4. The pump assembly of wherein the first and second pressure plate portions include preselected surface irregularities to relieve stresses and promote adhesion of the tungsten carbide coating to the underlying metal.5. The pump assembly of wherein the housing is an aluminum or aluminum alloy.6. The pump assembly of wherein the coating is tungsten carbide and in which integrated port plate features are formed.7. The pump assembly of wherein the metal of the first and second pressure plate portions includes preselected surface irregularities to relieve ...

Vacuuming device and vacuum apparatus

A vacuuming device comprises a main body, a rotary shaft, a vacuum pump rotor, a motor stator and a motor rotor. An air inlet, an air outlet, an oil storage chamber and a motor chamber are disposed in the main body. The oil storage chamber communicates with the air outlet. The rotary shaft is rotationally connected to the main body. The vacuum pump rotor is fixedly mounted to the rotary shaft and cooperatively forms a stator cavity of the vacuum pump with the inner-wall of the main body. The air inlet and the oil storage chamber communicate with the stator cavity of the vacuum pump respectively. The vacuuming device reduces the cost of manufacturing, optimizes the spatial structure and downsizes the device.

VANE PUMP

A vane pump including: a housing having a pump chamber; a rotor having a cylindrical peripheral wall portion accommodated in the pump chamber and having a pair of vane holding grooves facing each other in a diameter direction, and an oil chamber defined inside the peripheral wall portion to store lubricating oil; and a vane that is held in the pair of vane holding grooves and moves across the oil chamber in the diameter direction, is provided. At least one of an inner surface of the housing and an end face of the peripheral wall portion, which together with the inner surface defines a sliding interface, has an oil groove for the lubricating oil. 15-. (canceled)6. A vane pump comprising:a housing having a pump chamber;a rotor having a cylindrical peripheral wall portion accommodated in the pump chamber and having a pair of vane holding grooves facing each other in a diameter direction, and an oil chamber defined inside the peripheral wall portion to store lubricating oil; anda vane that is held in the pair of vane holding grooves and moves across the oil chamber in the diameter direction,wherein at least one of an inner surface of the housing or an end face of the peripheral wall portion, which together with the inner surface of the housing defines a sliding interface, has an oil groove for the lubricating oil, andwherein the oil groove extends only in a circumferential direction.7. The vane pump according to claim 6 , whereinthe oil groove is formed along an entire circumference.8. The vane pump according to claim 6 , whereina plurality of the oil grooves are formed concentrically on the end face of the peripheral wall portion, anda radially innermost oil groove of the oil grooves is formed along an inner peripheral edge of the end face of the peripheral wall portion.9. The vane pump according to claim 7 , whereina plurality of the oil grooves are formed concentrically on the end face of the peripheral wall portion, anda radially innermost oil groove of the oil ...

Electric motor and compressor having the same

An electric motor is provided. The electric motor includes a hollow-shaped stator configured to have a teeth part protruding on an inner surface thereof, and a rotor configured to be inserted into the hollow-shaped rotor, and including an outer surface facing the teeth part, and a plurality of poles therein. The rotor includes a bridge part disposed between poles and has a front rotor groove and a back rotor groove that are each dented at a front and a back of the bridge part with respect to a rotating direction of the rotor.

FLUID COMPRESSOR

The present invention relates to a fluid compressor comprising: a driving module comprising a driving motor embedded in a motor case; and a compression module comprising a rotor, which is rotatably driven by a driving motor and which has a plurality of variable blades radially provided along the outer peripheral surface thereof, a rotor housing for encompassing the rotor, and a cover of the rotor, for closing the rotor housing, wherein the compression modules are stacked and airtight to block contact between fluid passing through the compression module and air outside the compression module, so that the fluid flowing into any one compression module sequentially passes through the remaining compression modules. The rotary shafts provided in each center of the rotors are connected a shaft coupler. The present invention simultaneously achieves a high-efficiency compression ratio and reduces noise caused by the excessive velocity of any compression module. 1. A fluid compressor comprising:a driving module comprising a driving motor and a motor case in which the driving motor is embedded; anda compression module comprising a rotor, which is rotatably driven by means of the driving motor and which has a plurality of variable blades radially provided along the outer peripheral surface thereof, a rotor housing for encompassing the rotor, and a cover of the rotor, for closing the rotor housing,wherein the compression modules are assembled in a form in which two or more compression modules are stacked, the respective compression modules airtightly come in close contact with each other so as to block contact between a fluid passing through the compression module and air outside the compression module, so that the fluid flowing into any one compression module sequentially passes through the remaining compression modules, all the compression modules are driven by means of one driving motor, and rotary shafts provided in each center of the rotors inside the respective compression ...

VACUUMING DEVICE AND VACUUM APPARATUS

A vacuuming device comprises a main body, a rotary shaft, a vacuum pump rotor, a motor stator and a motor rotor. An air inlet, an air outlet, an oil storage chamber and a motor chamber are disposed in the main body. The oil storage chamber communicates with the air outlet. The rotary shaft is rotationally connected to the main body. The vacuum pump rotor is fixedly mounted to the rotary shaft and cooperatively forms a stator cavity of the vacuum pump with the inner-wall of the main body. The air inlet and the oil storage chamber communicate with the stator cavity of the vacuum pump respectively. The vacuuming device reduces the cost of manufacturing, optimizes the spatial structure and downsizes the device. 1. A vacuuming device , comprising a main body , a rotary shaft , a vacuum pump rotor , a motor stator and a motor rotor , wherein the main body is provided with an air inlet , an air outlet , an oil storage chamber and a motor chamber; said oil storage chamber communicates with said air outlet , and said rotary shaft is rotationally located in said main body; said vacuum pump rotor is fixedly mounted to said rotary shaft and cooperatively forms a stator cavity of a vacuum pump with an inner wall of said main body; wherein said air inlet and said oil storage chamber communicate with said stator cavity of the vacuum pump respectively; both said motor stator and said motor rotor are arranged in said motor chamber , and said motor stator is fixedly connected to said main body , and said motor rotor is fixedly connected to said rotary shaft;wherein said main body is provided with an oil and air outlet passage, and one end of said oil and air outlet passage is corresponding to said vacuum pump rotor, the other end of the oil and air outlet passage is communicating with said motor chamber;wherein several annular silicon steel sheets are arranged between said motor stator and said motor rotor, and the end of said oil and air outlet passage away from said vacuum ...

ROTOR AND ROTARY FLUID MACHINE

First closing member and second closing member close opening portions at both ends of cylindrical member in an axial direction. Base is housed in a space formed by cylindrical member, first closing member, and second closing member, and rotates around an axis in the same direction as the axial direction of cylindrical member. Resin layers are formed on thrust surfaces of base. Groove C is a plurality of concentric circular grooves or a spiral groove formed on each resin layer, and the center of circles of the circular grooves or the center of a spiral of the spiral groove is different from the rotation center of base. 1. A rotor comprising:a base housed in a space formed by a cylindrical member and a closing member that closes an opening portion at each of both ends of the cylindrical member in an axial direction, the base rotating around an axis in the same direction as the axial direction;a resin layer formed on a thrust surface of the base; anda plurality of concentric circular grooves or a spiral groove formed on the resin layer, the center of circles of the circular grooves or the center of a spiral of the spiral groove being different from a rotation center of the base.2. The rotor according to claim 1 , whereinan amount of eccentricity of the center of the circles of the circular grooves or an amount of eccentricity of the center of the spiral of the spiral groove relative to the rotation center of the base is greater than or equal to a groove pitch.3. A rotary fluid machine comprising:a cylindrical member;a closing member that closes opening portions at both ends of the cylindrical member in an axial direction; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the rotor according to .'}4. A rotary fluid machine comprising:a cylindrical member;a closing member that closes opening portions at both ends of the cylindrical member in an axial direction; and{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'the rotor according to .'} This application is a U.S. ...

COMPRESSOR SHELL ASSEMBLY

A compressor may include a compression mechanism and a shell assembly. The shell assembly may include first and second snap rings, a body, and first and second caps cooperating with the body to enclose the compression mechanism therein. The body may include first and second ends and an inner surface extending between both ends. The first cap may be received within the first end and may include a first side wall having a first groove. The second cap may be received within the second end and may include a second side wall having a second groove. The first snap ring may be disposed within the first groove and may engage the first end to restrict removal of the first cap from the body. The second snap ring may be disposed within the second groove and may engage the second end to restrict removal of the second cap from the body. 1. A compressor comprising:a compression mechanism; anda shell assembly housing said compression mechanism and including a body, an end cap, and a snap ring, said end cap at least partially received into said body, said snap ring engaging said body and restricting removal of said end cap from said body.2. The compressor of claim 1 , wherein said body includes an inner surface disposed between a first and second end of said body and having an annular groove disposed near said first end claim 1 , said snap ring partially received in said groove.3. The compressor of claim 2 , wherein said snap ring is resiliently movable between an uncompressed condition in which said snap ring has a first diameter and a compressed condition in which said snap ring has a second diameter that is smaller than said first diameter.4. The compressor of claim 2 , wherein said inner surface of said body includes a ledge disposed near said first end claim 2 , said end cap includes a radially outwardly extending flange claim 2 , said flange engaging said ledge claim 2 , and wherein said ledge restricts movement of said end cap relative to said body in a first axial direction ...

ROTARY COMPRESSOR ARRANGEMENT

Rotary compressor arrangement () comprising a body () centered at a shaft axis (X) and a cylindrical piston () eccentrically arranged with respect to the body () such that a chamber is created between them, the arrangement () further comprising a satellite element () arranged at an offset axis (Y) and orbiting around the shaft axis (X) such that the orbiting of the satellite element () entrains in rotation around the shaft axis (X) the cylindrical piston () over the body (), the relative distance between the axis (X, Y) being such that a contact between the body () and the cylindrical piston () within the chamber is ensured during rotation of the cylindrical piston (). 1. Rotary compressor arrangement comprising a body centered at a shaft axis and a cylindrical piston eccentrically arranged with respect to the body such that a chamber is created between them , the arrangement comprising a satellite element arranged at an offset axis and orbiting around the shaft axis such that the orbiting of the satellite element entrains in rotation around the shaft axis the cylindrical piston over the body , the relative distance between the axis being such that a contact between the body and the cylindrical piston within the chamber is ensured during rotation of the cylindrical piston.2. Rotary compressor arrangement according to comprising at least one sealing piston slidable within the body during rotation of the cylindrical piston in such a way that it contacts the inner wall of the cylindrical piston.3. Rotary compressor arrangement according to comprising a tensioning device exerting pressure over the at least one sealing piston so that it contacts the inner wall of the cylindrical piston as it rotates around the body.4. Rotary compressor arrangement according to wherein the at least one sealing piston creates at least one compression chamber whose volume is decreased by rotation of the cylindrical piston so that a compressible fluid is compressed before being discharged.5. ...

Vaccum pump

A vacuum pump, e.g. a rotary vane vacuum pump, generates a vacuum, in a suction device, with an air intake device and an air exhaust device, as well as a motor for driving the vacuum pump. The air exhaust device is provided with a discharge valve. The exhaust air is downstream of the discharge valve divided into two partial flows that are respectively associated with a pipe section. 12910121013131718: A vacuum pump () , e.g. a rotary vane vacuum pump , for generating a vacuum , e.g. in a suction device , with an air intake device () and an air exhaust device () , as well as a motor () for driving the vacuum pump () , wherein the air exhaust device () is provided with a discharge valve () , wherein the exhaust air is downstream of the discharge valve () divided into two partial flows that are respectively associated with a pipe section ( , ).221311121718121213171812: A vacuum pump () according to claim 1 , wherein the discharge valve () is arranged above the motor () and the vacuum pump () relative to a normal operating state of the combination of motor () and vacuum pump () claim 1 , and wherein a pipe section ( claim 1 , ) claim 1 , which conveys the exhaust air from the region above the motor () and the vacuum pump () into a region underneath the motor () and the vacuum pump () claim 1 , is connected to the discharge valve () claim 1 , wherein the pipe section ( claim 1 , ) is partially or completely arranged within the outside contour of the motor () and/or the vacuum pump () relative to a cross section perpendicular to a longitudinal axis (x) of the motor and/or pump shaft.321718293029303132: The vacuum pump () according to claim 1 , wherein a pipe section ( claim 1 , ) for a partial flow features a discharge opening ( claim 1 , ) into the surroundings claim 1 , and wherein the discharge opening ( claim 1 , ) into the surroundings is provided with an (additional) discharge valve ( claim 1 , ).421817188: The vacuum pump () according to claim 1 , wherein the motor ...

VANE PUMP

A vane pump is provided with: a pump housing having an accommodating concave portion; and a pump cartridge accommodated in the accommodating concave portion, wherein the pump cartridge has: a rotor; a plurality of vanes received in a plurality of slits formed in the rotor; a cam ring formed with a cam face on an inner circumference of the cam ring; and a first side plate provided at the opposite side from a bottom surface of the accommodating concave portion such that the cam ring is located therebetween, the first side plate has a first projected portion projected radially outward, and the pump cartridge is anchored to the pump housing via the first projected portion. 1. A vane pump configured to discharge working fluid by being rotationally driven by a driving source , comprising:a pump housing having an accommodating concave portion; anda pump cartridge accommodated in the accommodating concave portion, wherein a rotor to which a rotational driving force from the driving source is transmitted;', 'a plurality of vanes freely slidably received in a plurality of slits, the slits being formed in the rotor in a radiating pattern;', 'a cam ring formed with a cam face on an inner circumference of the cam ring, the cam face being configured such that tip ends of the plurality of vanes slide on the cam face as the rotor is rotated; and', 'a first side plate provided on an opposite side from a bottom surface of the accommodating concave portion such that the cam ring is located therebetween,, 'the pump cartridge hasthe first side plate has a first projected portion projected radially outward, andthe pump cartridge is anchored to the pump housing via the first projected portion.2. The vane pump according to claim 1 , further comprisingan annular member fitted into an annular groove, the annular groove being formed in an inner circumferential surface of the accommodating concave portion, whereinthe annular member comes into contact with the first projected portion at an ...

Method of Pumping in a System of Vacuum Pumps and System of Vacuum Pumps

The present invention relates to a pumping method in a pumping system (SP, SPP) comprising: a main lubricated rotary vane vacuum pump () with a gas inlet port () connected to a vacuum chamber () and a gas outlet port () leading into a conduit () before coming out into the gas outlet () of the pumping system (SP, SPP), a non-return valve () positioned in the conduit () between the gas outlet port () and the gas outlet (), and an auxiliary lubricated rotary vane vacuum pump () connected in parallel to the non-return valve (). According to this method, the main lubricated rotary vane vacuum pump () is activated in order to pump the gases contained in the vacuum chamber () through the gas outlet port (), simultaneously the auxiliary lubricated rotary vane vacuum pump () is activated and continues to operate all the while that the main lubricated rotary vane vacuum pump () pumps the gases contained in the vacuum chamber () and/or all the while that the main lubricated rotary vane vacuum pump () maintains a defined pressure in the vacuum chamber (). The present invention also relates to a pumping system (SP, SPP) able to be used to implement this method. 1. Pumping method in a system of vacuum pumps comprising:a main lubricated rotary vane vacuum pump with a gas inlet port connected to a vacuum chamber and a gas outlet port leading into a conduit before coming out into the gas outlet of the system of vacuum pumps,a non-return valve positioned in the conduit between the gas outlet port and the gas outlet, andan auxiliary lubricated rotary vane vacuum pump connected in parallel to the non-return valve,the method being characterized in thatthe main lubricated rotary vane vacuum pump is activated in order to pump the gases contained in the vacuum chamber through the gas outlet port;simultaneously the auxiliary lubricated rotary vane vacuum pump is activated; andthe auxiliary lubricated rotary vane vacuum pump continues to operate all the while that the main lubricated rotary ...

Pump device with a vacuum pump and a lubrication pump

A pump device having a drive shaft which has a drive section that can be coupled with a drive system. The pump device includes a vacuum pump that can be driven by the drive shaft. The vacuum pump includes a rotor and at least one blade that can be moved in radial direction in the rotor and that divides pressure chambers. The pump device also includes a lubrication pump that can be driven by the drive shaft. The vacuum pump is arranged between the drive section and the lubrication pump. A locking device is provided between the rotor and the lubrication pump in which, when activated, the at least one blade remains in a radially internal position when the rotor is rotating.

Housing for a rotary vane pump

A housing for a rotary vane pump includes a suction flange and a discharge flange having a multi-angular cross-section with at least two sides extending parallel to each other, cooling ribs provided on an outer surface of the housing, with the number of cooling ribs in the region with a high internal pressure being greater than a number of cooling ribs in the region with a low internal pressure, inlet and outlet, with the inlet cross-section being greater than the outlet cross-section, and connection elements provided on the housing and each having two installation surfaces connected by a connection surface.

HYDRAULIC VANE-TYPE MACHINE

The invention specifies a hydraulic vane-type machine () having a stator () and having a rotor () which has multiple vanes (), each of which vanes is radially displaceable in a guide () in the rotor (), bears against an inner circumference () of the stator (), and, together with the rotor (), the stator () and in each case one side wall () at each axial end of the rotor (), delimits working chambers whose volumes vary in the event of a rotation of the rotor () relative to the stator (). It is sought to obtain a certain degree of freedom for the design of the inner circumference. For this purpose, it is provided that each vane () has, on its radially inner side, an abutment surface () which bears radially at the outside against a cam disk (). 1. A hydraulic vane-type machine having a stator and having a rotor which has multiple vanes , each of which vanes is radially displaceable in a guide in the rotor , bears against an inner circumference of the stator , and , together with the rotor , the stator and in each case one side wall at each axial end of the rotor , delimits working chambers whose volumes vary in the event of a rotation of the rotor relative to the stator , wherein each vane has , on its radially inner side , an abutment surface which bears radially at the outside against a cam disk.2. The vane-type machine according to claim 1 , wherein the abutment surface is formed on at least one axial end of the vanes.3. The vane-type machine according to claim 2 , wherein the abutment surface is formed in a recess on the axial end of the vane.4. The vane-type machine according to claim 3 , wherein the vanes protrude axially beyond the rotor.5. The vane-type machine according to claim 3 , wherein the recess has a radial extent which is greater than a maximum stroke of the vane.6. The vane-type machine according to claim 3 , wherein the recess has an axial extent which corresponds to an axial thickness of the cam disc.7. The vane-type machine according to claim 5 , ...

COMPRESSOR

A compressor includes a rotary shaft, a front rotor including a front rotor surface, an intermediate wall portion including a first wall surface opposed to the front rotor surface in an axial direction, and a vane that is inserted into a vane groove formed in the intermediate wall portion and is moved in the axial direction with rotation of the front rotor. The vane includes a first vane end that is an end in the axial direction and contacts the front rotor surface. The first vane end is curved so as to be convex toward the front rotor surface and extends in the direction perpendicular to the axial direction. The front rotor surface includes a front curving surface curved in the axial direction so as to be displaced in the axial direction in accordance with its angular position. 1. The compressor according to claim 10 , wherein a concave surface curved in the axial direction so as to be concave toward the wall surface, and', 'a convex surface curved in the axial direction so as to be convex toward the wall surface,, 'the curving surface includes'}the concave surface includes a concave surface radially inner end and a concave surface radially outer end as opposite ends in the radial direction,in the concave surface, a radius of curvature of the concave surface radially inner end in the axial direction is smaller than a radius of curvature of the concave surface radially outer end,the convex surface includes a convex surface radially inner end and a convex surface radially outer end as opposite ends in the radial direction, andin the convex surface, a radius of curvature of the convex surface radially inner end in the axial direction is smaller than a radius of curvature of the convex surface radially outer end.2. The compressor according to claim 1 , whereinthe vane includes a tabular shape having a thickness in a direction perpendicular to both the axial direction and the longitudinal direction of the vane end, andthe thickness of the vane is set such that the vane ...

FLUID WORKING SYSTEMS

A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system. 121-. (canceled)22. A fluid working system for a working fluid including a positive displacement machine ,said positive displacement machine comprising:at least one working chamber and, at least two, fluid port means allowing working fluid to flow into and out of said working chamber,displacement means within, or defined by, said working chamber to displace, or be actuated by, working fluid from one fluid port means to another,wherein the fluid working system has associated therewith a compliance volume smoothing pressure fluctuations of said working fluid within said fluid working system.23. The fluid working system for a working fluid including a positive displacement machine as claimed in wherein said fluid port means comprises valves operable to be individually opened and closed at a selected rate.24. The fluid working system for a working fluid including a positive displacement machine as claimed in wherein the compliance volume is housed within the working chamber.25. The fluid working system for a working fluid including a positive displacement machine as claimed in wherein the compliance volume is housed within the displacement means.26. The fluid working system for a working fluid ...

ON-VEHICLE ELECTRONIC DEVICE AND MOTOR-DRIVEN COMPRESSOR

An inverter includes a bus bar as a wiring and a ferrite core that covers the bus bar to absorb electromagnetic noise from the bus bar. The bus bar and ferrite core are integrated by mold forming using a resin material in a state of exposing a part of the ferrite core. 1. An on-vehicle electronic device comprising:wiring; anda ferrite core that covers the wiring to absorb electromagnetic noise from the wiring, whereinthe ferrite core and the wiring are integrated by mold forming using a resin material in a state of exposing a part of the ferrite core.2. The on-vehicle electronic device according to claim 1 , whereinthe resin material has an outer resin portion that covers the ferrite core from outside, andat least one opening portion to expose the ferrite core is formed in the outer resin portion.3. The on-vehicle electronic device according to claim 2 , whereinthe outer resin portion has two base portions and a plurality of pillar-shaped coupling portions that couple the two base portions, andthe two base portions are arranged opposite to each other in an extending direction of a part covered with the ferrite core of the wiring.4. The on-vehicle electronic device according to claim 1 , whereinthe on-vehicle electronic device is an inverter that controls an electric motor provided in a motor-driven compressor mounted on a vehicle.5. The on-vehicle electronic device according to claim 1 , comprising:a substrate mounted with an electronic component; anda case in which the substrate is housed, whereinthe resin material is attached to an inner surface of the case together with the ferrite core, andthe ferrite core is separated from the substrate.6. A motor-driven compressor comprising:a compressing unit that compresses and discharges a refrigerant;an electric motor that drives the compressing unit; andan inverter that controls the electric motor,the inverter comprising:a substrate on which an electronic component is mounted;a case in which the substrate is housed;wiring ...

Vane Cell Machine having a Pressure Piece which Delimits Two Pressure Chambers

A vane cell machine includes a housing, rotor, curved ring, spring, and pressure piece. The rotor is configured to rotate about a rotation axis and includes a plurality of plate-like wings that are radially displaceable. The curved ring surrounds the rotor and delimits a movement path of the wings. Each pair of adjacent plate-like wings delimits a corresponding operating chamber. The housing surrounds and enables displacement of the curved ring. The spring is positioned between the curved ring and the housing, is pretensioned, and is configured to load the curved ring. The pressure piece is positioned between the spring and the curved ring, and sealingly abuts the housing and the curved ring so as to delimit a first and second pressure chamber from each other. The housing and the curved ring further delimit the first and second pressure chambers. 1. A vane cell machine comprising:a rotor that is configured to rotate about a rotation axis;a plurality of plate-like wings received in the rotor so as to be displaceable radially relative to the rotation axis, each pair of adjacent plate-like wings defining a corresponding operating chamber;a curved ring that surrounds the rotor, and that delimits a movement path of the plate-like wings in an outward direction relative to the rotation axis;a housing that surrounds the curved ring, and that enables displacement of the curved ring transversely relative to the rotation axis;a first spring that is positioned between the curved ring and the housing, that is pretensioned, and that is configured to exert a first spring force that loads the curved ring transversely relative to the rotation axis; anda pressure piece that is positioned between the first spring and the curved ring, and that sealingly abuts the housing and the curved ring to delimit a first pressure chamber and a second pressure chamber from each other;wherein the housing and the curved ring further delimit the first pressure chamber and the second pressure chamber.2 ...

HEAT CYCLE SYSTEM

To provide a heat cycle system with high durability, which employs a working fluid for heat cycle containing trifluoroethylene having a low global warming potential. 1. A heat cycle system , which has a circulation path in which a working fluid for heat cycle containing trifluoroethylene is circulated from a compressor via a condenser , an expansion valve and an evaporator to the compressor ,wherein a conductor wire provided in the circulation path is covered with a heat resistant material having a heat resistance of at least 300° C.2. The heat cycle system according to claim 1 , wherein the heat resistant material is a heat resistant material containing at least one material selected from the group consisting of mica claim 1 , asbestos claim 1 , alumina claim 1 , silica glass claim 1 , a polyimide resin claim 1 , a polyetherimide resin and a polyamide imide resin.3. The heat cycle system according to claim 1 , wherein the heat resistant material is a heat resistant material containing at least one material selected from the group consisting of mica claim 1 , asbestos claim 1 , alumina and silica glass.4. The heat cycle system according to claim 2 , wherein the heat resistant material is a heat resistant material comprising a material selected from the group consisting of mica claim 2 , asbestos claim 2 , alumina and silica glass claim 2 , and a material selected from the group consisting of a polyimide resin claim 2 , a polyetherimide resin and a polyamide imide resin claim 2 , in combination.5. The heat cycle system according to claim 1 , wherein the outer periphery of the conductor wire covered with the heat resistant material is further protected with a silicone resin.6. The heat cycle system according to claim 1 , wherein the conductor wire connects a driving means of the compressor and a power supply terminal capable of supplying an electric power from an external power source claim 1 , provided on the outer shell of the compressor.7. The heat cycle system ...

GAS COMPRESSOR

A compressor body () which is formed such that a compression chamber (A) dr ivied by a rotor (), a cylinder (), side blocks () and vanes () performs only one cycle of intake, compression and discharge in a period of one rotation of the rotor (), and a housing () which covers the compressor body () are included, and an outline shape of a cross-section of an inner circumferential surface () of the cylinder () is formed such that in the period of the one rotation of the rotor (), (i) a region in which a capacity of the compression chamber A rapidly increases, (ii) a region in which the capacity of the compression chamber A rapidly reduces, (iii) a region in which a capacity reduction rate of the compression chamber A is smaller than a capacity reduction rate of the region (ii), and (iv) a region in which the capacity reduction rate of the compression chamber A is larger than a capacity reduction rate of the region (iii) are consecutively provided in order. 1. A gas compressor , comprising:a compressor body; anda housing which covers the compressor body, the compressor body, including:a rotor which has an approximately cylindrical shape, and rotates around a shaft;a cylinder which has an inner circumferential surface having an outline shape surrounding the rotor from an outside of an outer circumferential surface of the rotor, and in which a discharge part is formed;a plurality of plate-like vanes which are provided to receive a back pressure from vane grooves formed in the rotor and freely protrude outward from the rotor; andtwo side blocks which are provided on both end surface sides of the rotor and the cylinder, wherein the compressor body is formed such that a plurality of compression chambers divided by the rotor, the cylinder, the side blocks and the vanes are formed inside, and each compression chamber performs only one cycle of intake, compression and discharge through the discharge part of gas in a period of one rotation of the rotor, and an outline shape of a ...

MOTOR-DRIVEN COMPRESSOR

A motor-driven compressor includes: a compression mechanism; an electric motor that drives the compression mechanism; a driver circuit unit disposed at a position to be cooled by refrigerant drawn by the compression mechanism; a temperature detection unit that detects a temperature of the driver circuit unit; and a motor control device disposed in the driver circuit unit to control the motor. The motor control device stores a predetermined drive pattern corresponding to a temperature characteristic of the driver circuit unit after starting the motor. When the temperature detected by the temperature detection unit at a time of starting the motor is higher than or equal to a predetermined temperature, the motor control device performs a limit drive control according to the predetermined drive pattern regardless of a drive state command to the motor. 1. A motor-driven compressor comprising:a compression mechanism that draws and compresses refrigerant of a refrigeration cycle;an electric motor that drives the compression mechanism;a driver circuit unit disposed at a position to be cooled by refrigerant drawn by the compression mechanism, the driver circuit unit supplying a power to the motor for driving the motor;a temperature detection unit that detects a temperature of the driver circuit unit or a relevant temperature of the temperature; anda motor control device disposed in the driver circuit unit to control a drive state of the motor based on a drive state command of the motor output from a refrigeration cycle control device that controls the refrigeration cycle, whereinthe motor control device stores a predetermined drive pattern corresponding to a temperature characteristic of the driver circuit unit after starting the motor, andwhen the temperature detected by the temperature detection unit at a time of starting the motor is higher than or equal to a predetermined temperature, the motor control device performs a limit drive control according to the predetermined ...

OIL-LUBRICATED SLIDE VANE ROTARY VACUUM PUMP WITH OIL SEPARATING AND RECONDITIONING DEVICE

An oil-lubricated slide vane rotary vacuum pump with a slide vane unit, and with an oil separating and reconditioning device, wherein oil and gas are separated by separating devices, possibly complemented by oil coolers and/or oil pumps. One or more monitoring and/or servicing devices are provided, and the oil separating and reconditioning device is installed in an oil separating and reconditioning housing. Side walls extend transversely to a plane of rotation of a slide vane rotor, and define a longitudinal extent of the oil separating and reconditioning housing. The one or more monitoring and/or servicing devices are arranged only in one or more cover parts which are attached to one or both end walls of the oil separating and reconditioning housing. The oil separating and reconditioning housing is formed with the side walls, the bottom wall and the top wall without being configured for a monitoring and/or servicing device. 129-. (canceled)30125633373131415161718191415613132122. An oil-lubricated slide vane rotary vacuum pump () with a rotary slide vane aggregate () , comprised of a rotary slide vane chamber () and a rotary slide vane rotor () , and with an oil separating and reconditioning device () , wherein oil and gas are separated in the oil separating and reconditioning device () by means of devices , wherein one or more monitoring and/or servicing devices () are provided for the mentioned devices , and the oil separating and reconditioning device () is accommodated in an oil separating and reconditioning housing () , with side walls ( , ) , a floor wall () , a ceiling wall () and end walls ( , ) , wherein the side walls ( , ) extend transverse to a rotational plane of the rotary slide vane rotor () , and define a longitudinal extension of the oil separating and reconditioning housing () , wherein , in terms of its longitudinal extension , the oil separating and reconditioning housing () consists of an extruded profile , in particular an aluminum extruded ...

CORD MANAGEMENT SYSTEM FOR A PORTABLE AIR COMPRESSOR

A portable air compressor including an air tank configured to store compressed air. The portable air compressor further includes a compressor unit coupled to the air tank including compressor components for compressing air, and a housing having a base disposed generally between the compressor components and the air tank. The base has a concave recess extending at least partially around a circumference of the compressor unit. The portable air compressor further includes a power cord for supplying power to the compressor components. The power cord is receiveable around the circumference of the compressor unit in the recess for storage. 1. A portable air compressor comprising:an air tank configured to store compressed air; compressor components for compressing air, and', 'a housing having a base disposed generally between the compressor components and the air tank, the base having a concave recess extending at least partially around a circumference of the compressor unit; and, 'a compressor unit coupled to the air tank including'}a power cord for supplying power to the compressor components, the power cord receiveable around the circumference of the compressor unit in the recess for storage.2. The portable air compressor of claim 1 , wherein the base includes a plurality of feet.3. The portable air compressor of claim 2 , wherein the plurality of feet are spaced generally around a circumference of the compressor unit claim 2 , and wherein the recess is formed collectively in the plurality of feet generally around the circumference.4. The portable air compressor of claim 2 , wherein the base is continuously circumferential claim 2 , and wherein the recess extends around the circumference of the compressor unit.5. The portable air compressor of claim 1 , wherein the base is formed from a flexible or elastic material.6. The portable air compressor of claim 1 , wherein the air tank includes a curved tank surface claim 1 , and wherein the base includes a contact surface ...

Turbocharger generating vacuum negative pressure, vacuum negative pressure supply type brake system using the same, and control method thereof

A turbocharger generating a vacuum negative pressure may include a compressor which receives, through a turbocharger shaft, a rotational force of a turbine which rotates based on exhaust gas from an engine and turbo-charges an intake which is supplied to the engine, and a motorless vacuum pump coupled to the turbine through a center housing which is coupled to the compressor and is configured to be rotated by the turbocharger shaft, thus generating a vacuum negative pressure.

Motor-driven compressor

Provided is a motor-driven compressor capable of realizing reduction in manufacturing costs. A compression mechanism of the motor-driven compressor according to the present invention includes a rotor rotatable by a rotation shaft and provided with a plurality of vane grooves, a plurality of vanes disposed advanceably and retractably in the respective vane grooves, a cup member formed into a bottomed cylindrical shape and enclosing the rotor, and a side plate closing an opening of the cup member The contour of the compressor is formed by a first housing and a second housing, and a suction pressure region in the first housing is hermetically closed from outside at a position where the first housing and the second housing are joined together.

Vane motor

Disclosed is a vane motor including: a casing including a casing including an inlet port and an outlet port, through which a pressurized fluid comes in or out; a rotor being installed in the casing, turning around a rotational shaft by the pressurized fluid and including a rotor body which has a substantially cylindrical shape and an axis coinciding with an axis of the rotational shaft and a plurality of vanes which is installed in grooves formed on an outer circumferential surface of the rotor body and has a portion protruding from the groove and the portion having a length varied in accordance with a rotational phase, and an inner liner of a cylindrical shape which is installed in the casing and receives the rotor therein, in which a distal end of the vane comes into contact with an inner wall surface of the inner liner while the pressurized fluid is retained therein until the pressurized fluid flowing through the inlet port of the casing is discharged from the outlet port of the casing, and an imaginary rotational axis of the inner liner is spaced apart from a rotational axis of the rotational shaft in a parallel state, but is able to rotate together with the rotor when the rotor turns.According to the present invention, when the rotor turns, the distal ends of the vanes contact against the inner wall surface of the casing, so that the inner wall surface of the casing and the vanes are worn out, to increase a frequency of replacement and repair and since the energy consumed by the abrasion is decreased and is used to generate the rotational force, the energy converting efficiency of the vane motor is improved.

VANE-TYPE COMPRESSOR

A vane-type compressor is provided. The vane-type compressor may include a cylindrical cylinder having opposite open ends along an axial direction, an inner circumferential surface of the cylinder being eccentric from an outer circumferential surface of the cylinder, a main bearing and a sub bearing, respectively, positioned at the open ends of the cylinder, a rotor coupled to a shaft supported by the main bearing and the sub bearing and installed eccentric from the inner circumferential surface of the cylinder, and a plurality of vanes coupled to the rotor to rotate along with the rotor, the plurality of vanes dividing the inner circumferential surface of the cylinder into a plurality of spaces including a suction chamber and a compression chamber when the rotor rotates. An elastic member may be installed at a point at which a minimum gap is maintained between the inner circumferential surface of the cylinder and the rotor so that a portion of the elastic member protrudes inward of the inner circumferential surface of the cylinder. An end of a discharge dimple formed in the inner circumferential surface of the cylinder extends up to the point. 1. A vane-type compressor , comprising:a cylinder having open ends along an axial direction, an inner circumferential surface of the cylinder being eccentric from an outer circumferential surface of the cylinder;a main bearing positioned at a first end of the cylinder and a sub bearing positioned at a second end of the cylinder;a rotor coupled to a shaft supported by the main bearing and the sub bearing and installed eccentric from the inner circumferential surface of the cylinder; anda plurality of vanes coupled to the rotor to rotate along with the rotor, the plurality of vanes dividing the inner circumferential surface of the cylinder into a plurality of chambers including a suction chamber and a compression chamber when the rotor rotates, wherein an elastic member is installed at a point at which a minimum gap is ...

VANE PUMP AND LEAKAGE DETECTING DEVICE USING THE SAME

The vane pump has a pump chamber, in which a first inner plate and a second inner plate are movably accommodated at each of axial ends of a rotor. In a case that an electric motor is arranged at a lower side of the vane pump, the first inner plate is moved in a direction to the second inner plate by a force of gravity, so that the first inner plate is brought into contact with a first axial end of the rotor. As a result, an upper side axial open end of each pumping room, which is respectively defined by multiple vanes, is closed by the first inner plate. An amount of air leaking from one of the pumping rooms to the other pumping rooms can be reduced. 1. A vane pump comprising:a pump housing having a pump chamber;a rotor rotatably accommodated in the pump housing and having a shaft-fixing hole extending in an axial direction of the rotor and multiple vane grooves, each of which extends in a radial-inward direction of the rotor;multiple vanes, each of which is movably accommodated in the respective vane groove so that each vane is movable in a radial direction of the rotor and in the axial direction of the rotor, each of the vanes being slidable on an inner surface of the housing which forms the pump chamber;an electric motor having a shaft inserted into the shaft-fixing hole and rotating the rotor;a first inner plate movably accommodated in the pump chamber between a first axial-end wall of the housing and the rotor as well as the vanes, so that the first inner plate is movable in the axial direction of the rotor in a first space formed between the first axial-end wall and the rotor as well as the vanes, the first space being formed in the pump chamber on an axial side opposite to the electric motor in the axial direction of the rotor; anda second inner plate movably accommodated in the pump chamber between a second axial-end wall of the housing and the rotor as well as the vanes, so that the second inner plate is movable in the axial direction of the rotor in a ...

ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE HAVING SAME

A rotary compressor () and a refrigeration cycle device () having same are provided. The rotary compressor comprises: a liquid reservoir (), a first direction control assembly (), and a compression mechanism. The compression mechanism comprises two cylinders and two gas injection holes, in which a sliding vane of one cylinder is pressed against an outer circumferential wall of a piston in the cylinder and a gas injection hole is used for injecting a refrigerant to the cylinder, while the sliding vane of the other cylinder is optionally in contact with or separate from the piston in the cylinder, the other gas injection hole is used for unidirectionally injecting the refrigerant into the cylinder; a first valve port () of the first direction control assembly () is connected to the gas suction port of the other cylinder, a second valve port () thereof is connected to liquid reservoir (), a third valve port () thereof is in communication with the exhaust hole, and the second valve port () and the third port () are optionally in communication with the first valve port (). 1. A rotary compressor comprising:a liquid reservoir;a housing disposed outside the liquid reservoir, in which an exhaust port is formed;a compression mechanism disposed within the housing, comprisinga cylinder assembly comprising two cylinders provided with compression chambers, and a partition plate arranged between the two cylinders, in each of which a sliding vane groove, an air suction hole and an exhaust hole are formed,a main bearing and an auxiliary bearing, disposed at both axial ends of the cylinder assembly respectively,two pistons, each being disposed inside the corresponding compression chamber and capable of rolling along an inner wall of the compression chamber, andtwo sliding vanes, each being movably disposed inside the corresponding sliding vane groove, a head portion of the sliding vane of one of the two cylinders abutting against an outer circumferential wall of the corresponding ...

AUTOMOTIVE VACUUM PUMP

An automotive vacuum pump includes a housing arrangement which encloses a pumping chamber and which rotatably supports a pump rotor having a rotor body with a bearing section and a vane section. The vane section of the rotor body has a vane slit. A slidable pump vane is supported in the vane slit. The slidable pump vane separates the pumping chamber into a plurality of rotating pumping compartments. The housing arrangement has a pumping chamber gas inlet opening and a pumping chamber gas outlet opening. The rotor body further has a separate oil outlet opening which is open to the pumping chamber 18-. (canceled)9. An automotive vacuum pump comprising:a housing arrangement configured to enclose a pumping chamber and to rotatably support a pump rotor comprising a rotor body which comprises a bearing section and a vane section,wherein,the vane section of the rotor body comprises a vane slit,a slidable pump vane is supported in the vane slit, the slidable pump vane being configured to separate the pumping chamber into a plurality of rotating pumping compartments,the housing arrangement comprises a pumping chamber gas inlet opening and a pumping chamber gas outlet opening, andthe rotor body further comprises a separate oil outlet opening which is open to the pumping chamber.10. The automotive vacuum pump as recited in claim 9 , wherein claim 9 ,the rotor body further comprises a longitudinal cylindrical vane section, andthe separate oil outlet opening is arranged in the longitudinal cylindrical vane section of the rotor body.11. The automotive vacuum pump as recited in claim 9 , wherein claim 9 ,the pumping chamber is covered by two front end walls which are each arranged to lie in a radial plane, andthe separate oil outlet opening is arranged adjacent to one of the two front end walls.12. The automotive vacuum pump as recited in claim 9 , wherein claim 9 ,the separate oil outlet opening is arranged in a lagging third or in a lagging fourth of a respective rotating ...

HIGH VOLUME VACUUM PUMP FOR CONTINUOUS OPERATION

In at least one embodiment the present invention provides a vacuum pump assembly having a vacuum pump body defining a cylindrical internal pump chamber housing a rotary vane rotatable about an axis radially removed from the centre of the cylindrical internal pump chamber, an inlet, at least one outlet, a rotary power source abutting the vacuum pump body and having a proximal surface fluidly communicating with the internal pump chamber by way of the at least one outlet; the rotary power source having a rotating shaft operably connected to the rotary vane, and an electronics housing positioned adjacent the vacuum pump body such that as the rotary vane is rotated a first abbreviated crescent shaped working space is defined in communication with the inlet and as the rotary vane continues to rotate a second abbreviated crescent shaped working space is defined in communication with the at least one outlet. 1. A vacuum pump assembly comprising:a) A vacuum pump body, the vacuum pump body defining a cylindrical internal pump chamber having a first circular wall and an opposed second circular wall separated by an axial width and an internal circumferential surface;b) A rotary vane having a cylindrical hub having an axial width and a plurality of outwardly projecting slots, each of the plurality of outwardly projecting slots slidably receiving a corresponding one of a plurality of vanes, each of the plurality of vanes having a distal leading edge having substantially the same width as the axial width of the internal pump chamber and the axial width of the rotary vane, the rotary vane rotatable about a rotation axis radially removed from the centre of the cylindrical internal pump chamber;c) An inlet in fluid communication with the cylindrical internal pump chamber;d) At least one outlet in fluid communication with the cylindrical internal pump chamber;e) A rotary power source abutting the vacuum pump body and fluidly communicating with the cylindrical internal pump chamber of ...

VANE ROTARY COMPRESSOR

A vane rotary compressor has a cylinder. A main bearing and a sub bearing are coupled to the cylinder forming a compression space. The main and sub bearing each have a back pressure pocket on a surface facing the cylinder. The main bearing and the sub bearing radially support a rotation shaft. A roller coupled to the shaft is disposed within the compression space. The roller has circumferentially spaced vane slots, each vane slot extending from an open end on an outer circumferential surface of the roller to a back pressure chamber disposed within the roller at an opposite end of each vane slot. A plurality of vanes slide within the vane slots and divide the compression space into compression chambers. At least one of the back pressure chambers in the vane slots fluidly communicates with at least one of the back pressure pockets in the main and sub bearings. 1. A vane rotary compressor , comprising:a cylinder;a main bearing and a sub bearing coupled to the cylinder, the main bearing and the sub bearing forming a compression space together with the cylinder, the main bearing including a main bearing back pressure pocket and the sub bearing including a sub bearing back pressure pocket;a rotation shaft radially supported by the main bearing and the sub bearing;a roller including a plurality of vane slots spaced apart from each other along a circumferential direction, each vane slot including one end open toward an outer circumferential surface of the roller, and a back pressure chamber disposed adjacent an opposite end of the vane slot, the back pressure chamber being configured to communicate with at least one of the main bearing back pressure pocket or the sub bearing back pressure pocket; anda plurality of vanes slidably inserted into the vane slots, the vanes being configured to protrude in a direction toward an inner circumferential surface of the cylinder, the vanes being arranged so as to divide the compression space into a plurality of compression chambers, ...

Rotational pump and fuel vapor leakage detection device having the same

A pump casing has two external communication holes communicating with an outside. A partition member partitioning an interior of the pump casing into a first space and a second space. The first space communicates with the two external communication holes. The partition member have two internal communication holes communicating the first space with the second space. A first rotor member is rotatably accommodated in the first space. A second rotor member is rotatably accommodated in the second space. A torque switching unit is configured to switch between transmission of a running torque selectively to the first rotor member and transmission of the running torque to both the first rotor member and the second rotor member.

VANE ROTARY COMPRESSOR

A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber. 1. A vane rotary compressor , comprising:a cylinder;a main bearing and a sub bearing coupled to the cylinder to form a compression space together with the cylinder, wherein at least one of the main bearing and the sub bearing includes a back pressure pocket formed on a surface facing the cylinder;a rotation shaft radially supported by the main bearing and the sub bearing;a roller coupled to the rotation shaft and rotatably supported within the cylinder between the main bearing and the sub bearing, the roller being configured such that an outer circumferential surface of one side of the roller is positioned in close proximity with an inner circumferential surface of the cylinder at a contact point, the roller including a plurality of vane slots formed along a circumferential direction of the roller, with each of the vane slots including one end opened toward the outer circumferential surface of the roller, and a back pressure chamber formed at the opposite end of the vane slot and in fluid communication with the back pressure pocket during at least a portion of a full rotation of the roller; anda plurality of vanes slidably ...

Inertia vacuum assisted self-priming pump

An inertia vacuum assisted self-priming pump, characterized by comprising a centrifugal pump and a rotary vacuum pump, wherein a pedestal is fixed above a frame of the centrifugal pump, a rotary vacuum pump is mounted above the pedestal and covered by an enclosure; The centrifugal pump consists of an eccentric reducer, a suction cover, a volute, an impeller, a casing cover, a shaft, an adaptor, a frame and a discharge check valve.

VANE PUMP

A vane cell pump with a rotor () rotatably mounted in an adjustable stroke ring () and driven by a drive shaft () and with several vanes () is proposed, which vanes are mounted in a radially displaceable manner in radially running slots () of the rotor () and are subjected to rear vane chamber pressure. In accordance with the invention, it is provided that at least one forced guide element is allocated to one vane () for the radial movement of the vane () in such a manner that the forced guide element is integrated into the rotor () and/or into the drive shaft () without any effect on installation space. 131241234432. Vane cell pump with a rotor () rotatably mounted in an adjustable stroke ring () and driven by a drive shaft () , and with several vanes () , which are mounted in a radially displaceable manner in radially running slots () of the rotor () and are subjected to rear vane chamber pressure , characterized in that at least one forced guide element is allocated to one vane () for the radial movement of the vane () in such a manner that the forced guide element is integrated into the rotor () and/or into the drive shaft () without any effect on installation space.212- (canceled) The present invention relates to a vane cell pump in accordance with the type more specifically described in the preamble of claim .Mechanical vane cell pumps with adjustable stroke rings are, for example, sufficiently known. With such vane cell pumps, a pressurization of the rear vane chamber is provided, in order to, in ongoing operation, subject the respective vanes to rear vane chamber pressure in such a manner that they are moved radially outwards. However, upon the start of the vane cell pump, the pump pressure initially must be built up, such that no rear vane chamber pressure is initially present. In addition, at low ambient temperatures, the problem arises that, due to the friction conditions, the vanes do not independently extend into the joining gap, and thus no pumping ...

ROTARY PUMP WITH A COMPACT SETTING STRUCTURE FOR ADJUSTING THE DELIVERY VOLUME

A rotary pump exhibiting an adjustable specific delivery volume, the rotary pump including a housing featuring a delivery chamber for a fluid feed; a delivery rotor in the delivery chamber; a setting structure which surrounds the delivery rotor, a spring exerting a spring force which acts on the setting structure in a first setting direction; a setting pressure chamber for applying a setting pressure of a setting fluid, which acts counter to the spring force in a second setting direction, to the setting structure; and a housing abutment, wherein the setting structure includes: a recess on a circumference; and a counter abutment for the housing abutment in the recess. 1. A rotary pump exhibiting an adjustable specific delivery volume said rotary pump comprising:(a) a housing featuring a delivery chamber into which an inlet and an outlet for a fluid feed;(b) a delivery rotor which can be rotated about a rotational axis in the delivery chamber;(c) a setting structure which surrounds the delivery rotor and forms delivery cells with the delivery rotor, in order to deliver the fluid from the inlet to the outlet, and which can be rotationally moved, in order to perform a setting movement, which adjusts the specific delivery volume of the rotary pump, relative to the delivery rotor in a first setting direction and in a second setting direction counter to the first setting direction;(d) a spring device which is supported in a spring counter bearing of the setting structure, in order to exert a spring force which acts on the setting structure in the first setting direction;(e) a setting pressure chamber for applying a setting pressure of a setting fluid, which acts counter to the spring force, to the setting structure;(f) and a housing abutment which cannot be moved relative to the housing and which limits a movement of the setting structure in at least one of the setting directions by an abutting contact with the setting structure,{'b': '8', '(g) wherein the setting ...

Pressure intensifier, arrangement in an aircraft or spacecraft comprising a device driveable by a driving pressure difference, aircraft or spacecraft, and method

A pressure intensifier, arrangement in an aircraft or spacecraft including a device driveable by a driving pressure difference, aircraft or spacecraft, and method. A pressure intensifier has a motor part with motor-part-side fluid inlet and motor-part-side fluid outlet and a pump part with pump-part-side fluid inlet and pump-part-side fluid outlet. The pressure intensifier, as a positive-displacement machine with at least one rotatable rotor, is driveable by a motor-part-side fluid flow from the motor-part-side fluid inlet to the motor-part-side fluid outlet for conveying pump-part-side fluid flow from the pump-part-side fluid inlet to the pump-part-side fluid outlet. An arrangement in an aircraft or spacecraft includes a device driveable by a driving pressure difference and includes a vacuum booster. An aircraft or spacecraft has a pressure intensifier of the type and/or an arrangement of the type, and a method is disclosed for operating a device in an aircraft or spacecraft.