WO2007054163A1 - Vacuum pump - Google Patents

Vacuum pump Download PDF

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Publication number
WO2007054163A1
WO2007054163A1 PCT/EP2006/009503 EP2006009503W WO2007054163A1 WO 2007054163 A1 WO2007054163 A1 WO 2007054163A1 EP 2006009503 W EP2006009503 W EP 2006009503W WO 2007054163 A1 WO2007054163 A1 WO 2007054163A1
Authority
WO
WIPO (PCT)
Prior art keywords
wing
vacuum pump
rotor
sliding shoes
housing
Prior art date
Application number
PCT/EP2006/009503
Other languages
German (de)
French (fr)
Inventor
Willi Schneider
Original Assignee
Joma-Hydromechanic Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Joma-Hydromechanic Gmbh filed Critical Joma-Hydromechanic Gmbh
Priority to EP06792329A priority Critical patent/EP1851436A1/en
Publication of WO2007054163A1 publication Critical patent/WO2007054163A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/06—Polyamides, e.g. NYLON
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/10—Polyimides, e.g. Aurum

Definitions

  • the invention relates to a vacuum pump with a wing, a pump housing and a rotor rotatably mounted therein, wherein the wing is slidably mounted in the rotor and the wing tips are provided with sliding shoes which protrude on both sides of the rotor radially and on the
  • Inner circumferential surface of the pump housing abut, whereby the wing defines a suction chamber and a pressure chamber.
  • a vacuum pump which has a pump housing in which a rotor is arranged.
  • This rotor supports a wing, which rests against the inner peripheral side of the housing.
  • the wing is constructed in two parts, so that it can take different lengths. This ensures that the wing always rests against the inner peripheral surface and divides the pump chamber into a pressure chamber and a suction chamber.
  • the wing tips are provided with inserts, which consist of a hard material.
  • inserts consist of a hard material.
  • the invention has for its object to provide a vacuum pump in which the wear is minimal or the pump is repairable.
  • the sliding blocks are made of a polyamide.
  • the housing of the vacuum pump is made of steel, which has the advantage that the housing can absorb high forces and yet is easy to work.
  • the shoes are made of a polyamide, which is hard enough, but still not wear the inner peripheral surface of the pump housing or negligible. In case of wear, only the sliding shoe or the shoes must be replaced. A constant length allows a simple design of the wing and allows its easy production.
  • the polyamide is a polyamide 11, a polyamide 12, a polyamide 6, a polyamide 66, en PACM-12 or a PA 6-3-T with high temperature resistance.
  • PA 610 and PA612 have a very high dimensional stability.
  • a further embodiment provides that the polyamide is crosslinked, in particular radiation crosslinked. This improves the properties in terms of hardness and resistance to solvents. Crosslinking by vulcanization with sulfur, by means of peroxides or metal oxides is likewise possible and improves the desired properties.
  • the sliding shoes have a hardness which is lower than that of the inner peripheral surface. As a result, occur, if at all, the wear on the shoe and not on the pump room. It must therefore be replaced if necessary, only the shoe.
  • the material of the sliding block contains a filler, in particular the sliding block is fiber-reinforced.
  • the filler may contain glass fiber, carbon fiber, metal, graphite or Kevlar.
  • the drawing shows a perspective view of an embodiment of a vacuum pump designated by the reference numeral 10, in which the housing 12 is shown without housing cover.
  • the housing 12 has a suction port 14, which opens into an interior 16.
  • this interior 16 is a generally designated 18 rotor in which a wing 20 is mounted orthogonal to the axis of rotation 22 slidably.
  • the wing 20 has a constant length, which on the inner diameter of the housing 12th
  • the rotor 18 passes through the housing 12, in particular a bottom 26 of the interior 18, and protrudes with a non-illustrated portion on the back of the housing 12, over which it is rotated (by means of a drive, not shown) in rotation.
  • the inner space 16 is delimited by a substantially circular cylindrical inner peripheral surface 32 against which the tips 34 of the wing 20 rest, which subdivide the inner space into a suction space 54 and a pressure space 56, since the outer peripheral surface 44 of the rotor 18 bears permanently against the inner circumferential surface 32.
  • the wing tips 34 is formed by a shoe 58, which is plugged onto the free end of the wing 20 and a flattened side 30 and a rounded side 36 has.
  • the flattened side 30 is located on the pressure side, which means that the wing 20 shown in FIG. 1 rotates in the direction of the clockwise direction.

Abstract

The invention relates to a vacuum pump comprising a vane, a pump housing, and a rotor which is rotatably mounted in the housing. The vane is displaceably mounted in the rotor, and the vane tips are provided with sliding shoes that radially protrude out of the rotor on both sides and lie on the inner peripheral surface of the pump housing, the vane defining a suction chamber and a pressure chamber. The sliding shoes consist of a polyamide.

Description

Titel : VakuumpumpeTitle: Vacuum pump
BesehreibungBesehreibung
Die Erfindung betrifft eine Vakuumpumpe mit einem Flügel, einem Pumpengehäuse und einem darin drehbar gelagerten Rotor, wobei der Flügel verschieblich im Rotor gelagert ist und die Flügelspitzen mit Gleitschuhen versehen sind, die beidseitig aus dem Rotor radial herausragen und an derThe invention relates to a vacuum pump with a wing, a pump housing and a rotor rotatably mounted therein, wherein the wing is slidably mounted in the rotor and the wing tips are provided with sliding shoes which protrude on both sides of the rotor radially and on the
Innenumfangsflache des Pumpengehäuses anliegen, wodurch der Flügel einen Saugraum und einen Druckraum definiert.Inner circumferential surface of the pump housing abut, whereby the wing defines a suction chamber and a pressure chamber.
Aus der EP-A-I 471 255 ist eine Vakuumpumpe bekannt, welche ein Pumpengehäuse aufweist, in welchem ein Rotor angeordnet ist. Dieser Rotor lagert einen Flügel, welcher an der Innenumfangsseite des Gehäuses anliegt. Der Flügel ist zweiteilig aufgebaut, sodass er unterschiedliche Längen annehmen kann. Dadurch ist gewährleistet, dass der Flügel stets an der Innenumfangsflache anliegt und den Pumpenraum in einen Druckraum und in einen Saugraum aufteilt. Außerdem sind die Flügelspitzen mit Einlagen versehen, welche aus einem harten Material bestehen. Es hat sich jedoch gezeigt, dass es zu zuweilen einem hohen Verschleiß am Flügel und an der Innenumfangsflache kommt. In der Regel kann eine derartige Pumpe nicht repariert werden.From EP-A-I 471 255 a vacuum pump is known, which has a pump housing in which a rotor is arranged. This rotor supports a wing, which rests against the inner peripheral side of the housing. The wing is constructed in two parts, so that it can take different lengths. This ensures that the wing always rests against the inner peripheral surface and divides the pump chamber into a pressure chamber and a suction chamber. In addition, the wing tips are provided with inserts, which consist of a hard material. However, it has been shown that there is sometimes a high wear on the wing and on the inner peripheral surface. As a rule, such a pump can not be repaired.
Der Erfindung liegt die Aufgabe zugrunde, eine Vakuumpumpe bereitzustellen, bei welcher der Verschleiß minimal ist oder die Pumpe reparierbar ist.The invention has for its object to provide a vacuum pump in which the wear is minimal or the pump is repairable.
Diese Aufgabe wird mit einer Vakuumpumpe der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass die Gleitschuhe aus einem Polyamid bestehen. Bei einem bevorzugten Ausführungsbeispiel der Erfindung wird das Gehäuse der Vakuumpumpe aus Stahl hergestellt, was den Vorteil hat, dass das Gehäuse hohe Kräfte aufnehmen kann und dennoch einfach bearbeitbar ist. Die Gleitschuhe bestehen aus einem Polyamid, welches hart genug ist, aber dennoch die Innenumfangsflache des Pumpengehäuses nicht oder vernachlässigbar abnützt. Im Verschleißfalle muss lediglich der Gleitschuh oder müssen die Gleitschuhe ausgetauscht werden. Eine konstante Länge ermöglicht eine einfache Ausgestaltung des Flügels und erlaubt dessen einfache Herstellung .This object is achieved with a vacuum pump of the type mentioned according to the invention that the sliding blocks are made of a polyamide. In a preferred embodiment of the invention, the housing of the vacuum pump is made of steel, which has the advantage that the housing can absorb high forces and yet is easy to work. The shoes are made of a polyamide, which is hard enough, but still not wear the inner peripheral surface of the pump housing or negligible. In case of wear, only the sliding shoe or the shoes must be replaced. A constant length allows a simple design of the wing and allows its easy production.
Vorteilhaft ist das Polyamid ein Polyamid 11, ein Polyamid 12, ein Polyamid 6, ein Polyamid 66, en PACM-12 oder ein PA 6-3-T mit hoher Temperaturfestigkeit. PA 610 und PA612 besitzen eine sehr hohe Maßkonstanz.Advantageously, the polyamide is a polyamide 11, a polyamide 12, a polyamide 6, a polyamide 66, en PACM-12 or a PA 6-3-T with high temperature resistance. PA 610 and PA612 have a very high dimensional stability.
Eine Weiterbildung sieht vor, dass das Polyamid vernetzt, insbesondere strahlenvernetzt ist. Hierdurch werden die Eigenschaften hinsichtlich Härte und Beständigkeit gegen Lösemitteln verbessert. Eine Vernetzung durch Vulkanisation mit Schwefel, mittels Peroxiden oder Metalloxiden ist ebenfalls möglich und verbessert die gewünschten Eigenschaften.A further embodiment provides that the polyamide is crosslinked, in particular radiation crosslinked. This improves the properties in terms of hardness and resistance to solvents. Crosslinking by vulcanization with sulfur, by means of peroxides or metal oxides is likewise possible and improves the desired properties.
Mit Vorzug weisen die Gleitschuhe eine Härte auf, die geringer ist als die der Innenumfangsflache . Dadurch treten, wenn überhaupt, die Verschleißerscheinungen am Gleitschuh und nicht am Pumpenraum auf. Es muss also bei Bedarf lediglich der Gleitschuh ausgetauscht werden.With preference the sliding shoes have a hardness which is lower than that of the inner peripheral surface. As a result, occur, if at all, the wear on the shoe and not on the pump room. It must therefore be replaced if necessary, only the shoe.
Um die Elastizität des Gleitschuhs zu erhöhen, enthält das Material des Gleitschuhs einen Füllstoff, insbesondere ist der Gleitschuh faserverstärkt. Dabei kann der Füllstoff Glasfaser, Kohlefaser, Metall, Graphit oder Kevlar enthalten. Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein besonders bevorzugtes Ausführungsbeispiel im Einzelnen beschrieben ist. Dabei können die in der Zeichnung dargestellten und in der Beschreibung sowie in den Ansprüchen erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.In order to increase the elasticity of the sliding block, the material of the sliding block contains a filler, in particular the sliding block is fiber-reinforced. The filler may contain glass fiber, carbon fiber, metal, graphite or Kevlar. Further advantages, features and details of the invention will become apparent from the subclaims and the following description in which, with reference to the drawing, a particularly preferred embodiment is described in detail. The features shown in the drawing and mentioned in the description and in the claims may each be essential to the invention individually or in any combination.
Die Zeichnung zeigt eine perspektivische Ansicht eines Ausführungsbeispiels einer mit dem Bezugszeichen 10 bezeichneten Vakuumpumpe, bei welcher das Gehäuse 12 ohne Gehäusedeckel dargestellt ist. Das Gehäuse 12 besitzt einen Sauganschluss 14, der in einen Innenraum 16 ausmündet. In diesem Innenraum 16 befindet sich ein insgesamt mit 18 bezeichneter Rotor, in welchem ein Flügel 20 orthogonal zur Drehachse 22 verschieblich gelagert ist. Der Flügel 20 besitzt eine konstante Länge, die auf den Innendurchmesser des Gehäuses 12 The drawing shows a perspective view of an embodiment of a vacuum pump designated by the reference numeral 10, in which the housing 12 is shown without housing cover. The housing 12 has a suction port 14, which opens into an interior 16. In this interior 16 is a generally designated 18 rotor in which a wing 20 is mounted orthogonal to the axis of rotation 22 slidably. The wing 20 has a constant length, which on the inner diameter of the housing 12th
abgestimmt ist. Der Rotor 18 durchgreift das Gehäuse 12, insbesondere einen Boden 26 des Innenraums 18, und ragt mit einem nicht dargestellten Abschnitt auf der Rückseite aus dem Gehäuse 12 heraus, über welchen er (mittels eines nicht dargestellten Antriebs) in Drehung versetzt wird. Der Innenraum 16 ist von einer im Wesentlichen kreiszylindrischen Innenumfangsflache 32 begrenzt, an welcher die Spitzen 34 des Flügels 20 anliegen, die den Innenraum in einen Saugraum 54 und einen Druckraum 56 unterteilen, da die Außenumfangsflache 44 des Rotors 18 permanent an der Innenumfangsflache 32 anliegt .is tuned. The rotor 18 passes through the housing 12, in particular a bottom 26 of the interior 18, and protrudes with a non-illustrated portion on the back of the housing 12, over which it is rotated (by means of a drive, not shown) in rotation. The inner space 16 is delimited by a substantially circular cylindrical inner peripheral surface 32 against which the tips 34 of the wing 20 rest, which subdivide the inner space into a suction space 54 and a pressure space 56, since the outer peripheral surface 44 of the rotor 18 bears permanently against the inner circumferential surface 32.
Sowohl zur Gewichtsreduzierung als auch zur Herstellung konstanter Wanddicken und ggfs. um den Flügel 20 in Längsrichtung geringfügig elastisch zu machen, weist dieser beim ersten Ausführungsbeispiel gemäß Figur 2 dreieckförmige Durchbrüche 24 auf, die den Flügel 20 in Querrichtung durchsetzen. Beim zweiten Ausführungsbeispiel gemäß Figur 3 weist der Flügel 20 im Querschnitt längliche Durchbrüche 28 auf.Both in order to reduce weight and to produce constant wall thicknesses and possibly. To make the wing 20 in the longitudinal direction slightly elastic, this has in the first embodiment shown in Figure 2 triangular openings 24 which pass through the wing 20 in the transverse direction. In the second embodiment according to FIG. 3, the wing 20 has elongated openings 28 in cross-section.
Außerdem ist erkennbar, dass die Flügelspitzen 34 von einem Gleitschuh 58 gebildet wird, der auf das freie Ende des Flügels 20 aufgesteckt ist und eine abgeflachte Seite 30 und eine abgerundete Seite 36 aufweist. Die abgeflachte Seite 30 befindet sich auf der Druckseite was bedeutet, dass der in der Figur 1 dargestellte Flügel 20 entgegen der Richtung des Uhrzeigersinns dreht. In addition, it can be seen that the wing tips 34 is formed by a shoe 58, which is plugged onto the free end of the wing 20 and a flattened side 30 and a rounded side 36 has. The flattened side 30 is located on the pressure side, which means that the wing 20 shown in FIG. 1 rotates in the direction of the clockwise direction.

Claims

Patentansprüche claims
1. Vakuumpumpe mit einem Flügel (20), einem Pumpengehäuse1. Vacuum pump with a wing (20), a pump housing
(12) und einem darin drehbar gelagerten Rotor (18), wobei der Flügel (20) verschieblich im Rotor (18) gelagert ist und die Flügelspitzen (34) mit Gleitschuhen(12) and a rotatably mounted therein rotor (18), wherein the wing (20) is displaceably mounted in the rotor (18) and the wing tips (34) with sliding shoes
(58) versehen sind, die beidseitig aus dem Rotor (18) radial herausragen und an der Innenumfangsflache (32) des Pumpengehäuses (12) anliegen, wodurch der Flügel(58) are provided which protrude radially from both sides of the rotor (18) and abut against the inner peripheral surface (32) of the pump housing (12), whereby the wing
(18) einen Saugraum (54) und einen Druckraum (56) definiert, dadurch gekennzeichnet, dass die Gleitschuhe(18) defines a suction chamber (54) and a pressure chamber (56), characterized in that the sliding shoes
(58) aus einem Polyamid bestehen.(58) consist of a polyamide.
2. Vakuumpumpe nach Anspruch 1, dadurch gekennzeichnet, dass das Polyamid vernetzt, insbesondere strahlenvernetzt ist.2. Vacuum pump according to claim 1, characterized in that the polyamide is crosslinked, in particular radiation crosslinked.
3. Vakuumpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Gleitschuhe (58) eine Härte besitzen, die geringer ist als die der3. Vacuum pump according to claim 1 or 2, characterized in that the sliding shoes (58) have a hardness which is lower than that of
Innenumfangsflache (32).Inner peripheral surface (32).
4. Vakuumpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Material der Gleitschuhe (58) einen Füllstoff enthält, insbesondere faserverstärkt ist.4. Vacuum pump according to one of the preceding claims, characterized in that the material of the sliding shoes (58) contains a filler, in particular fiber-reinforced.
5. Vakuumpumpe nach Anspruch 4, dadurch gekennzeichnet, dass der Füllstoff Glasfaser, Kohlefaser, Metall, Graphit oder Kevlar ist.5. Vacuum pump according to claim 4, characterized in that the filler is glass fiber, carbon fiber, metal, graphite or Kevlar.
6. Vakuumpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Flügel (20) eine konstante Länge aufweist. 6. Vacuum pump according to one of the preceding claims, characterized in that the wing (20) has a constant length.
PCT/EP2006/009503 2005-11-14 2006-09-30 Vacuum pump WO2007054163A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06792329A EP1851436A1 (en) 2005-11-14 2006-09-30 Vacuum pump

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202005020664.4 2005-11-14
DE202005020664 2005-11-14
DE102006012889A DE102006012889A1 (en) 2005-11-14 2006-03-13 vacuum pump
DE102006012889.3 2006-03-13

Publications (1)

Publication Number Publication Date
WO2007054163A1 true WO2007054163A1 (en) 2007-05-18

Family

ID=37499700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/009503 WO2007054163A1 (en) 2005-11-14 2006-09-30 Vacuum pump

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EP (1) EP1851436A1 (en)
DE (1) DE102006012889A1 (en)
WO (1) WO2007054163A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008019440A1 (en) * 2008-04-17 2009-10-22 FRÖTEK Kunststofftechnik GmbH Wing of a vane pump or vane compressor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514237A (en) * 1968-07-25 1970-05-26 Ingersoll Rand Co Fluid motion device
GB1324443A (en) * 1970-11-23 1973-07-25 British Oxygen Co Ltd Rotary pumps
JPS5543236A (en) * 1978-09-18 1980-03-27 Sanyo Electric Co Ltd Sliding vane apparatus of rotary type compressor
JPH04265402A (en) * 1991-02-20 1992-09-21 Nittetsu Choko Kk Pneumatic motor and blade thereof
US5226400A (en) * 1992-10-08 1993-07-13 Microfuels, Inc. Device for conversion of liquid fuel into fuel vapor and microscopic liquid droplets
JPH0925885A (en) * 1995-07-07 1997-01-28 Calsonic Corp Rotary compressor and vane for rotary compressor
WO2002025113A1 (en) * 2000-09-21 2002-03-28 Robert Bosch Gmbh Plastic vane for a vane-cell vacuum pump
EP1471255A1 (en) * 2003-04-24 2004-10-27 Joma-Hydromechanic GmbH Vane pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514237A (en) * 1968-07-25 1970-05-26 Ingersoll Rand Co Fluid motion device
GB1324443A (en) * 1970-11-23 1973-07-25 British Oxygen Co Ltd Rotary pumps
JPS5543236A (en) * 1978-09-18 1980-03-27 Sanyo Electric Co Ltd Sliding vane apparatus of rotary type compressor
JPH04265402A (en) * 1991-02-20 1992-09-21 Nittetsu Choko Kk Pneumatic motor and blade thereof
US5226400A (en) * 1992-10-08 1993-07-13 Microfuels, Inc. Device for conversion of liquid fuel into fuel vapor and microscopic liquid droplets
JPH0925885A (en) * 1995-07-07 1997-01-28 Calsonic Corp Rotary compressor and vane for rotary compressor
WO2002025113A1 (en) * 2000-09-21 2002-03-28 Robert Bosch Gmbh Plastic vane for a vane-cell vacuum pump
EP1471255A1 (en) * 2003-04-24 2004-10-27 Joma-Hydromechanic GmbH Vane pump

Also Published As

Publication number Publication date
EP1851436A1 (en) 2007-11-07
DE102006012889A1 (en) 2007-05-16

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