DE202009010890U1 - vacuum pump - Google Patents
vacuum pump Download PDFInfo
- Publication number
- DE202009010890U1 DE202009010890U1 DE202009010890U DE202009010890U DE202009010890U1 DE 202009010890 U1 DE202009010890 U1 DE 202009010890U1 DE 202009010890 U DE202009010890 U DE 202009010890U DE 202009010890 U DE202009010890 U DE 202009010890U DE 202009010890 U1 DE202009010890 U1 DE 202009010890U1
- Authority
- DE
- Germany
- Prior art keywords
- housing
- rotor
- seal
- vacuum pump
- rotor shaft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C27/009—Shaft sealings specially adapted for pumps
Abstract
Vakuumpumpe (10) mit einem topfförmigen Gehäuse (12), einem exzentrisch im Gehäuse (12) drehbar gelagerten Rotor (18), wenigstens einem im oder am Rotor (18) gelagerten Flügel, und einem das topfförmige Gehäuse (12) verschließenden Gehäusedeckel, wobei der Rotor (18) eine Rotorwelle (22) aufweist, die das topfförmige Gehäuse (12) durchgreift und über die der Rotor (18) angetrieben wird, dadurch gekennzeichnet, dass die Rotorwelle (22) mittels einer Dichtung (34) im Gehäuse (12) abgedichtet ist.Vacuum pump (10) with a cup-shaped housing (12), a rotor (18) rotatably mounted eccentrically in the housing (12), at least one wing mounted in or on the rotor (18), and a housing cover closing the cup-shaped housing (12) the rotor (18) has a rotor shaft (22) which passes through the cup-shaped housing (12) and via which the rotor (18) is driven, characterized in that the rotor shaft (22) is secured in the housing (12) by means of a seal (34) ) is sealed.
Description
Die Erfindung betrifft eine Vakuumpumpe mit einem topfförmigen Gehäuse, einem exzentrisch im Gehäuse drehbar gelagerten Rotor, wenigstens einem im oder am Rotor gelagerten Flügel, und einem das topfförmige Gehäuse verschließenden Gehäusedeckel, wobei der Rotor eine Rotorwelle aufweist, die das topfförmige Gehäuse durchgreift und über die der Rotor angetrieben wird.The The invention relates to a vacuum pump with a cup-shaped housing, a eccentric in the housing rotatably mounted rotor, at least one mounted in or on the rotor Wing, and one the cup-shaped one casing occlusive Cover, wherein the rotor has a rotor shaft which passes through the cup-shaped housing and over which the rotor is driven.
Vakuumpumpen mit einem derartigen Aufbau sind bekannt. Sie weisen in der Regel ein aus Metall bestehendes Gehäuse auf, in welchem ein Rotor über seine Rotorwelle drehbar gelagert ist und in welchem die Arbeitsräume gebildet werden. Die Abdichtung des Pumpenraums zur Atmosphäre erfolgt durch Druckölschmierung. Die Rotorwelle wird zum Beispiel vom Motor eines Kraftfahrzeugs, insbesondere von dessen Nockenwelle, in Drehung versetzt. Bei niedrigen Wellendrehzahlen wird das Lager durch die intermittierende Schmierung bei Unterdruck im Pumpenraum nicht ausreichend mit Öl versorgt. Das Öl fließt durch den Druckunterschied in den Pumpenraum und die Wellendrehzahl ist zu gering um eine ausreichende Schmierung des Lagers zu erhalten. Durch die Mischreibung kommt es zu einem erhöhtem Drehmoment.vacuum pumps with such a structure are known. They usually point a metal housing in which a rotor over its rotor shaft is rotatably mounted and in which the working spaces formed become. The sealing of the pump room to the atmosphere is carried out by Pressure oil lubrication. The rotor shaft is for example the engine of a motor vehicle, in particular of the camshaft, set in rotation. At low Shaft speeds, the bearing by the intermittent lubrication insufficiently supplied with oil at negative pressure in the pump room. The oil flows by the pressure difference in the pump chamber and the shaft speed is too low to obtain sufficient lubrication of the bearing. The mixed friction causes an increased torque.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vakuumpumpe bereit zu stellen, bei der das Drehmoment in diesem Zustand. d. h. bei niedrigen Drehzahlen, verringert ist.Of the The invention is therefore based on the object, a vacuum pump ready to put at which the torque in this state. d. H. at low speeds, is reduced.
Diese Aufgabe wird mit einer Vakuumpumpe der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass die Rotorwelle mittels einer Dichtung im Gehäuse abgedichtet ist.These The object is achieved by a vacuum pump of the type mentioned in the present invention solved, that the rotor shaft sealed by a seal in the housing is.
Durch die insbesondere radiale Abdichtung wird der Lagerspalt nach außen zur Atmosphäre abgedichtet und dadurch ist das Lager ausreichend mit Öl zur Schmierung versorgt und reduziert im evakuierten Zustand das Drehmoment besonders bei Leerlaufdrehzahl des Motors. Die erfindungsgemäße Lösung kann bei Vakuumpumpen vor allem mit einer intermittierenden Schmierung eingesetzt werden.By the particular radial seal is the bearing gap to the outside to the atmosphere sealed and thus the bearing is sufficient with oil for lubrication supplies and reduces the torque especially in the evacuated state at idling speed of the engine. The solution according to the invention can For vacuum pumps especially with an intermittent lubrication be used.
Zur optimalen Anordnung der Dichtung und zum Erhalt einer ausreichenden Dichtfläche weist das Gehäuse zur Aufnahme der Rotorwelle einen Gehäuseansatz auf.to optimal arrangement of the seal and to obtain a sufficient sealing surface shows the case for receiving the rotor shaft on a housing approach.
Dabei sieht ein Ausführungsbeispiel vor, dass die die Rotorwelle aufnehmende Antriebsöffnung im Gehäuseansatz die Dichtfläche für die Dichtung bildet. Dabei sitzt die Dichtung auf der Rotorwelle. Insbesondere weist die Rotorwelle zur Aufnahme der Dichtung eine Umfangsnut auf.there sees an embodiment before, that the rotor shaft receiving drive opening in housing extension the sealing surface for the Seal forms. The seal sits on the rotor shaft. Especially has the rotor shaft for receiving the seal on a circumferential groove.
Bei bevorzugten Ausführungsbeispielen ist die Dichtung eine Radialdichtung, insbesondere ein O-Ring, ein radialer Formdichtring, ein Wellendichtring oder eine Labyrinthdichtung.at preferred embodiments the seal is a radial seal, in particular an O-ring, a radial form sealing ring, a shaft seal or a labyrinth seal.
Im Falle einer Labyrinthdichtung ist die Antriebsöffnung im Bereich ihres freien Endes eine Stufenbohrung und verjüngt sich.in the In the case of a labyrinth seal, the drive opening is in the area of its free Finally a stepped bore and tapers.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung besonders bevorzugte Ausführungsbeispiele im Einzelnen beschrieben sind. Dabei können die in der Zeichnung dargestellten sowie in der Beschreibung und in den Ansprüchen erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further Advantages, features and details of the invention will become apparent the dependent claims as well as the following description, with reference to FIG the drawing particularly preferred embodiments in detail are described. It can those shown in the drawing and in the description and in the claims mentioned Features individually for themselves or be essential to the invention in any combination.
In der Zeichnung zeigen:In show the drawing:
In
der
Die
Rotorwelle
Die
Claims (7)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009010890U DE202009010890U1 (en) | 2009-08-10 | 2009-08-10 | vacuum pump |
PCT/EP2010/060132 WO2011018293A2 (en) | 2009-08-10 | 2010-07-14 | Vacuum pump |
EP10739533A EP2464869A2 (en) | 2009-08-10 | 2010-07-14 | Vacuum pump |
US13/389,992 US20120141314A1 (en) | 2009-08-10 | 2010-07-14 | Vacuum pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009010890U DE202009010890U1 (en) | 2009-08-10 | 2009-08-10 | vacuum pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202009010890U1 true DE202009010890U1 (en) | 2009-12-03 |
Family
ID=41397128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202009010890U Expired - Lifetime DE202009010890U1 (en) | 2009-08-10 | 2009-08-10 | vacuum pump |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120141314A1 (en) |
EP (1) | EP2464869A2 (en) |
DE (1) | DE202009010890U1 (en) |
WO (1) | WO2011018293A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3536961A3 (en) * | 2018-03-06 | 2019-12-04 | Schwäbische Hüttenwerke Automotive GmbH | Sealing element vacuum pump |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH379044A (en) * | 1960-03-31 | 1964-06-30 | Acc Emanuel Di G E R Emanuel & | Rotary compressor with sliding blades |
JPH0726624B2 (en) * | 1989-08-10 | 1995-03-29 | 三菱電機株式会社 | Oil rotary vacuum pump shaft seal device |
JPH07293467A (en) * | 1994-04-28 | 1995-11-07 | Hitachi Ltd | Vane-type vacuum pump |
JP3699858B2 (en) * | 1999-04-26 | 2005-09-28 | 株式会社フジユニバンス | Hydraulic power transmission coupling |
US6325602B1 (en) * | 1999-09-23 | 2001-12-04 | John J. Rademacher | Automotive vacuum pump |
AT9290U1 (en) * | 2006-05-10 | 2007-07-15 | Magna Powertrain Ag & Co Kg | GEARBOX WITH COAXIAL LUBRICANT PUMP |
-
2009
- 2009-08-10 DE DE202009010890U patent/DE202009010890U1/en not_active Expired - Lifetime
-
2010
- 2010-07-14 WO PCT/EP2010/060132 patent/WO2011018293A2/en active Application Filing
- 2010-07-14 US US13/389,992 patent/US20120141314A1/en not_active Abandoned
- 2010-07-14 EP EP10739533A patent/EP2464869A2/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3536961A3 (en) * | 2018-03-06 | 2019-12-04 | Schwäbische Hüttenwerke Automotive GmbH | Sealing element vacuum pump |
Also Published As
Publication number | Publication date |
---|---|
EP2464869A2 (en) | 2012-06-20 |
WO2011018293A3 (en) | 2011-12-15 |
WO2011018293A2 (en) | 2011-02-17 |
US20120141314A1 (en) | 2012-06-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20100107 |
|
R081 | Change of applicant/patentee |
Owner name: JOMA-POLYTEC GMBH, DE Free format text: FORMER OWNER: JOMA-POLYTEC KUNSTSTOFFTECHNIK GMBH, 72411 BODELSHAUSEN, DE Effective date: 20100503 |
|
R163 | Identified publications notified |
Effective date: 20100812 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20130301 |