EP2464871A2 - Vacuum pump - Google Patents
Vacuum pumpInfo
- Publication number
- EP2464871A2 EP2464871A2 EP10732368A EP10732368A EP2464871A2 EP 2464871 A2 EP2464871 A2 EP 2464871A2 EP 10732368 A EP10732368 A EP 10732368A EP 10732368 A EP10732368 A EP 10732368A EP 2464871 A2 EP2464871 A2 EP 2464871A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum pump
- bore
- pump according
- end portion
- nipple
- 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.)
- Granted
Links
- 210000002445 nipple Anatomy 0.000 claims abstract description 33
- 239000000314 lubricant Substances 0.000 claims abstract 2
- 239000011324 bead Substances 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 description 7
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- 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
-
- 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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
-
- 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
- F04C2240/00—Components
- F04C2240/60—Shafts
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
Definitions
- the invention relates to a vacuum pump with a cup-shaped
- Housing a rotatably mounted eccentrically in the housing rotor and a cup-shaped housing closing housing cover, wherein the rotor has a rotor shaft which passes through the pot-shaped housing and through which the rotor is driven.
- Vacuum pumps with such a structure are known. They usually have an existing metal housing, in which a rotor is rotatably mounted on its rotor shaft and in which the
- the pump chamber is sealed to the atmosphere by pressurized oil lubrication.
- the rotor shaft is rotated, for example, by the engine of a motor vehicle, in particular by its camshaft.
- the supply of the vacuum pump with lubricating oil via the rotor shaft, which is provided for this purpose with an axial bore.
- the drive In order to allow the lubricating oil to be introduced into the rotor shaft, the drive must be connected to the shaft by a suitable means
- Rotor shaft and in particular to be connected to the bore.
- the invention is therefore based on the object, a vacuum pump
- connection nipple sits.
- This nipple is the connecting link between the rotor shaft and drive, or external lubricating oil supply.
- the connection nipple is designed so that it is a plug connection.
- nipple made of plastic, in particular of an elastomer or a flexible thermoplastic.
- the free end portion of the bore of a in the Diameter narrowing stepped bore formed and in particular, the free end portion of the bore has an inner circumferential groove.
- connection nipple at its engaging in the free end portion of the bore proximal side at least one circumferential bead. If the connection nipple is inserted into the free end portion of the bore, then the circumferential bead engages in the inner circumferential groove.
- Connection nipple is thus held securely.
- a peripheral bead In order to use the connection nipple easily in the free end portion of the hole, a peripheral bead has a semi-circular and a peripheral bead has a trapezoidal cross-section.
- the semicircular in cross-section circumferential bead serves to seal the connection nipple in the bore and the trapezoidal in cross-section codessswulst is axially arranged outside, wherein the cross-section decreases radially outward.
- This peripheral bead is configured substantially frusto-conical and advantageously engages behind a step of the stepped bore.
- connection nipple In order to ensure a defined system of the connection nipple on the end face of the end portion of the bore, the connection nipple on a circumferential stop collar. In addition, a fluid-tight storage in the line of the lubricating oil supply is made possible by the fact that the connection nipple has a circumferential bead at its end section which is distal to the rotor shaft.
- connection nipple in the rotor shaft
- the bore is a blind hole and at the bottom of the bore a transverse bore is provided.
- Figure 1 shows a longitudinal section through a vacuum pump with indicated drive
- Figure 2 is an enlarged view of the section II according to Figure 1;
- FIG. 3 shows a side view of the connection nipple
- Figure 4 shows a longitudinal section IV - IV through the nipple according to
- FIG. 1 shows a longitudinal section through a total of 10
- Housing cover 14 is closed.
- a rotor 16 is rotatably mounted, the rotor shaft 18, the bottom 20 of the housing 12 passes through.
- FIG. 2 shows the detail Il in enlarged scale and it can be clearly seen that the rotor shaft 18 has an axial bore 28.
- This bore 28 serves to supply lubricating oil, which is distributed via a transverse bore 30 in the housing 12.
- the bore 28 has an end portion 32 which is designed in a stepped manner. From the inside to the outside, a first inner circumferential groove 34 is followed by a first step 36, a second inner circumferential groove 38, a second step 40 and a frusto-conical widening end 42. In this end section sits the proximal end section 44 of a connection nipple 46 which is shown in FIGS. 3 and 4 is shown enlarged.
- the distal end portion 48 is inserted in a bore 50 through which lubricating oil is supplied.
- connection nipple 46 has approximately at its center a stop collar 52, which comes into abutment with inserted into the rotor shaft 18 nipple 46 at the end face 22. In this position of the
- Connecting nipple 46 engages a first circumferential bead 54 in the first Circumferential groove 34 and behind the first stage 36, whereby the connection nipple 46 is held in the bore 28.
- On the proximal end portion 44 is still a second circumferential bead 56 which engages in the second circumferential groove 38.
- the second circumferential groove 38 has a larger radius than the semi-circular in cross-section second peripheral bead 56, so that a substantially linear and thus fluid-tight system is achieved.
- the cross section of the first circumferential bead 54 is trapezoidal, which facilitates insertion of the connecting nipple 46 into the bore 28. The easy insertion is also by the frusto-conical widening end 42 of the bore 28.
- the second circumferential bead 56 may also abut a cylindrical portion of the bore 28.
- the distal end portion 48 of the nipple 46 has a third peripheral bead 58 which abuts the inner peripheral surface of the bore 50 and here provides for a fluid-tight connection. It can also be seen from FIGS. 3 and 4 that the diameter of the proximal end section 44 is smaller than the diameter of the distal end section 48.
- connection errors are e.g. one
- Axial offset 60 and / or an angular error 62 can be up to 1 mm and the angular error 62 up to 0.5 °.
- Another advantage of the connecting nipple 48 according to the invention is the
- Sealing elements such as O-rings or the like, since this sealing function is taken over by the bulge beads 54, 56 and 58.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009038132.5A DE102009038132B4 (en) | 2009-08-12 | 2009-08-12 | vacuum pump |
PCT/EP2010/060133 WO2011018294A2 (en) | 2009-08-12 | 2010-07-14 | Vacuum pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2464871A2 true EP2464871A2 (en) | 2012-06-20 |
EP2464871B1 EP2464871B1 (en) | 2014-05-21 |
Family
ID=43448363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10732368.5A Active EP2464871B1 (en) | 2009-08-12 | 2010-07-14 | Vacuum pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US8794942B2 (en) |
EP (1) | EP2464871B1 (en) |
CN (1) | CN102472279A (en) |
DE (1) | DE102009038132B4 (en) |
WO (1) | WO2011018294A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018102393A1 (en) | 2018-02-02 | 2019-08-08 | J.D. Neuhaus Holding Gmbh & Co. Kg | vane motor |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0199984B1 (en) | 1985-03-29 | 1989-11-15 | B a r m a g AG | Rotary vane vacuum pump |
US4635972A (en) * | 1985-05-13 | 1987-01-13 | R. W. Lyall & Company, Inc. | Plastic pipe coupling apparatus and method of using same |
DE8908863U1 (en) * | 1989-07-21 | 1989-09-21 | Pierburg GmbH, 4040 Neuss | Vane pump |
DE9410508U1 (en) * | 1994-06-01 | 1994-08-25 | Rattay, Hans, 46569 Hünxe | Hose connector |
US6106030A (en) * | 1998-02-23 | 2000-08-22 | Ford Motor Co. | Tubular coupling |
JP2004028323A (en) | 2002-05-01 | 2004-01-29 | Hidesaburo Ishii | Joint main body device for pipe joint, and joint annular member to be used for joint main body device |
JP2004092504A (en) | 2002-08-30 | 2004-03-25 | Toyoda Mach Works Ltd | Vane type vacuum pump |
JP2004263690A (en) | 2003-02-13 | 2004-09-24 | Aisan Ind Co Ltd | Vane type vacuum pump |
JP4733356B2 (en) * | 2004-03-10 | 2011-07-27 | トヨタ自動車株式会社 | Vane pump for gas and operation method thereof |
FR2886696B1 (en) | 2005-06-03 | 2007-08-31 | Renault Sas | DEVICE FOR COUPLING A VACUUM PUMP WITH A CAMSHAFT COMPRISING LUBRICANT FLUID FEED MEANS |
GB0607198D0 (en) * | 2006-04-10 | 2006-05-17 | Wabco Automotive Uk Ltd | Improved vacuum pump |
DE102007010729B3 (en) | 2007-01-04 | 2008-04-24 | Joma-Polytec Kunststofftechnik Gmbh | Vacuum pump for use in engine of motor vehicle, has sealing body flexibly designed and fixed at air discharge opening at front and rear ends of opening in rotation direction of rotor, where body lies permanently at opening |
-
2009
- 2009-08-12 DE DE102009038132.5A patent/DE102009038132B4/en active Active
-
2010
- 2010-07-14 CN CN2010800357396A patent/CN102472279A/en active Pending
- 2010-07-14 WO PCT/EP2010/060133 patent/WO2011018294A2/en active Application Filing
- 2010-07-14 US US13/389,939 patent/US8794942B2/en active Active
- 2010-07-14 EP EP10732368.5A patent/EP2464871B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011018294A2 * |
Also Published As
Publication number | Publication date |
---|---|
US20120141313A1 (en) | 2012-06-07 |
DE102009038132B4 (en) | 2015-12-24 |
DE102009038132A1 (en) | 2011-02-17 |
WO2011018294A3 (en) | 2012-02-23 |
US8794942B2 (en) | 2014-08-05 |
WO2011018294A2 (en) | 2011-02-17 |
EP2464871B1 (en) | 2014-05-21 |
CN102472279A (en) | 2012-05-23 |
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