WO2010145634A2 - Vakuumpumpe - Google Patents
Vakuumpumpe Download PDFInfo
- Publication number
- WO2010145634A2 WO2010145634A2 PCT/DE2010/000622 DE2010000622W WO2010145634A2 WO 2010145634 A2 WO2010145634 A2 WO 2010145634A2 DE 2010000622 W DE2010000622 W DE 2010000622W WO 2010145634 A2 WO2010145634 A2 WO 2010145634A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vacuum pump
- pressure
- lubricant
- valve
- housing
- Prior art date
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
- 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
- F04C29/021—Control systems for the circulation of the lubricant
-
- 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
- F04C29/028—Means for improving or restricting lubricant flow
-
- 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
- F04C2240/30—Casings or housings
Definitions
- the invention relates to a vacuum pump with a pump housing, which comprises a lubricant supply channel for supplying lubricant, which serves in the vacuum pump for cooling, lubricating bearings and / or sealing of gaps.
- the vacuum pump can be designed as a vane pump, as it is known from international publication WO 2004/074687 A2.
- Vacuum pumps are used in motor vehicles, for example, to generate a vacuum in a designed as SaugluftverEntr brake booster.
- As the lubricant and sealant for the vacuum pump engine oil supplied by a lubrication system of the automobile may be used.
- the object of the invention is to reduce the power consumption during operation of a vacuum pump with a pump housing, which comprises a lubricant supply channel for supplying lubricant, which serves in the vacuum pump for cooling, lubricating bearings and / or sealing of gaps.
- a vacuum pump with a pump housing which comprises a lubricant supply channel for supplying lubricant, which serves in the vacuum pump for cooling, lubricating bearings and / or sealing gaps, in that the vacuum pump, a pressure regulating valve for in the lubricant supply prevailing lubricant inlet pressure includes.
- the lubricant inlet pressure or oil inlet pressure in the lubricant supply channel may vary with the speed of the motor vehicle engine, for example when using lubricant pumps driven by an automotive engine.
- the vacuum pump according to the invention is decoupled by the pressure control valve from the optionally speed-dependent oil inlet pressure in the lubricant supply. As a result, the lubricant throughput of the vacuum pump can be reduced in operation over its entire speed range.
- the lubricant is preferably a lubricant and sealant.
- a preferred embodiment of the vacuum pump is characterized in that the pressure regulating valve is designed or adjusted so that a minimum required supply of the vacuum pump is ensured with lubricant during operation.
- the Pressure control valve is preferably used to reduce occurring during operation pressure peaks of the oil inlet pressure in the lubricant supply.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure regulating valve is designed as a pressure reducing valve, which maintains an internal pump pressure at a constant pressure level, which is smaller than the maximum lubricant inlet pressure of the vacuum pump.
- the pressure reducing valve comprises, for example, a valve piston which cooperates with a spring device. In the pressure reducing valve pressure forces are compared with spring forces to regulate the internal pump pressure.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure regulating valve is designed as a pressure limiting valve which limits an internal pump pressure of the vacuum pump.
- the internal pump pressure of the vacuum pump can be reduced with the pressure limiting valve compared to conventional vacuum pumps. As a result, the drive torque and thus the power consumption of the vacuum pump over the entire speed range can be reduced.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure limiting valve upstream of an inlet throttle.
- the inlet throttle is preferably arranged in the lubricant supply channel or upstream of this. The inlet throttle ensures that only the pressure in the lubricant supply channel is limited or reduced with the pressure limiting valve, and not the pressure in the entire lubrication system.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure limiting valve comprises an outlet throttle. Over the outlet throttle excess lubricant in the environment of the vacuum pump, preferably in an oil sump, dissipated.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure limiting valve comprises a closing body, which is biased by a closing spring in its closed position. About the size of the biasing force of the closing spring, the control pressure of the pressure relief valve can be adjusted.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure relief valve is arranged in a flow channel, which in the Lubricant supply channel opens. Excess lubricant can be removed via the drainage channel, for example into the oil sump of a motor vehicle.
- the drainage channel is, just like the lubricant inlet channel, designed, for example, as a bore in the pump housing.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure limiting valve comprises a valve housing with a housing body having an inlet opening.
- the inlet opening is closed by the closing body, which in turn is biased by the closing spring in its closed position.
- the closing body lifts off from the inlet opening in order to release it. Over the open inlet opening, an overpressure in the lubricant supply channel can be reduced.
- valve housing comprises a closure screw which fixes the housing body in the pump housing and has a drain opening.
- the housing body and the plug limit a valve space in which the closing spring is arranged.
- the outlet throttle is preferably provided in the screw plug.
- the drain opening of the closure screw is preferably arranged above an oil sump of the motor vehicle.
- a further preferred embodiment of the vacuum pump is characterized in that the vacuum pump is designed as a positive displacement pump with at least one displacement body.
- the vacuum pump preferably comprises a rotor, via which the displacement body is set in motion.
- the vacuum pump may be designed, for example, as a blocking-wing pump.
- a further preferred embodiment of the vacuum pump is characterized in that the vacuum pump is designed as a vane pump with at least one vane and a rotor.
- the rotor preferably comprises a bearing section, with which the rotor is rotatably mounted in the pump housing.
- the supplied via the lubricant inlet channel lubricant is initially used to lubricate the bearing section of the rotor.
- the lubricant enters a working space of the vacuum pump, where it seals during operation occurring gap between the wing and the pump housing.
- Figure 1 shows a part of a vacuum pump with a pressure control valve according to the invention in longitudinal section
- FIG. 2 is an enlarged view of the detail with the pressure control valve
- FIG. 1 A first figure.
- FIG. 1 shows a longitudinal section of a vacuum pump 1 with a pump housing 2.
- the pump housing 2 comprises a pump housing pot 3, which is closed by a cover 4.
- a rotor 5 is rotatably received.
- the rotor 5 comprises a rotor bearing section 6, with which the rotor 5 is rotatably mounted in the housing pot 3.
- the rotor 5 comprises a wing receiving slot 7, through which a wing 8 is guided within a circulation contour 10 in the pump housing 2.
- the rotor 5 is drivingly connected to a drive shaft (not shown) for transmitting torque by means of a coupling device 12.
- the pump housing 2 bounded in its interior a working space 14 which is divided into a suction chamber and into a pressure chamber.
- the suction chamber communicates with an inlet port of the vacuum pump 1 in connection, via which a working medium, in particular air, is sucked into the suction chamber.
- the sucked or sucked air is compressed in the vacuum pump 1 and discharged through the rotating blade 8 via the pressure space.
- a Schmierstoffzu Switzerlandkanal or lubricant inlet channel 15 of the vacuum pump 1 lubricant, in particular oil, is supplied.
- the Schmierstoffzu 1500 is designed as a bore with a longitudinal axis 16 and opens into an annular groove 18 which surrounds the rotor bearing portion 6 of the rotor 5.
- the lubricant is preferably provided by a lubrication system of a motor vehicle which serves to supply all lubricating oil to be lubricated and cooled points of an automotive engine.
- the lubricant is sucked in, for example with the aid of a lubricant pump, from an oil pan or an oil sump and enters a main lubrication channel, which for example runs in an engine block parallel to the crankshaft.
- the lubricant pump is driven for example by a camshaft or distributor shaft or by a crankshaft of the motor vehicle engine.
- a pressure regulating valve 20 is provided in the pump housing 2 of the vacuum pump 1, via which an overpressure or a pressure peak in the lubricant supply channel 15 can be reduced.
- the pressure regulating valve 20 is preferably designed as a pressure limiting valve, via which excess lubricant can be removed from the lubricant supply channel 15.
- the discharged lubricant is preferably recycled back into the oil sump.
- the pressure control valve 20 is preceded by an inlet throttle 19, which is indicated in Figure 1 only by a symbol on the longitudinal axis 16 of the lubricant supply channel 15.
- the inlet throttle 19 ensures that the pressure control valve 20 unfolds its control action only in the lubricant supply channel 15 and not in the entire lubrication system of the motor vehicle.
- the inlet throttle 19 is preferably provided in the lubricant supply channel 15, for example in the form of a cross-sectional constriction.
- FIG. 2 shows that the pressure regulating valve 20 designed as a pressure limiting valve is provided in a discharge channel 22 which opens into the lubricant supply channel 15.
- the pressure regulating valve 20 comprises a valve housing 24 with a housing body 25, which is arranged with the interposition of a seal 26 in the outlet channel 22, that a part of the housing body 25 projects into the lubricant supply channel 15.
- the housing body 25 comprises an inlet opening 27, passes through the lubricant from the Schmierstoffzu Switzerlandkanal 15 in a valve chamber 28 in the interior of the valve housing 24.
- the inlet opening 27 is closed by a closing body 30, which is biased by a closing spring 32 in its closed position shown in Figure 2.
- the closing spring 32 is designed as a helical compression spring and clamped between the closing body 30 and a locking screw 36.
- the closure screw 36 includes an external thread with which the closure screw 36 is screwed into the drainage channel 22 of the pump housing 2.
- the housing body 25 is fixed in the drainage channel 22 with the aid of the locking screw 36.
- the housing body 25 may also be attached to the locking screw 36.
- the closure screw 36 further comprises a central drainage sel 34 and a drain opening 35 which connects the valve chamber 28 with the surroundings of the vacuum pump 1.
- a lubricant discharge line can be connected to the discharge opening 35, via which the discharged lubricant is fed to a lubricant reservoir.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010002597T DE112010002597A5 (de) | 2009-06-17 | 2010-06-02 | Öldruckregelventil für eine vakuumpumpe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009025137 | 2009-06-17 | ||
DE102009025137.5 | 2009-06-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010145634A2 true WO2010145634A2 (de) | 2010-12-23 |
WO2010145634A3 WO2010145634A3 (de) | 2011-09-15 |
Family
ID=43356803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2010/000622 WO2010145634A2 (de) | 2009-06-17 | 2010-06-02 | Vakuumpumpe |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112010002597A5 (de) |
WO (1) | WO2010145634A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013084100A1 (en) * | 2011-12-05 | 2013-06-13 | Vhit S.P.A. | System, pump and method of vacuum generation for applications to motor vehicles |
EP2952742A1 (de) * | 2014-06-05 | 2015-12-09 | WABCO Europe BVBA | Vakuumpumpe und System aus einer Vakuumpumpe und einem Motor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004074687A2 (de) | 2003-02-20 | 2004-09-02 | Luk Automobiltechnik Gmbh & Co. Kg | Vakuumpumpe mit einem kunststoffflügel |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB832264A (en) * | 1957-05-06 | 1960-04-06 | N G N Electrical Ltd | Improvements in or relating to vacuum pumping apparatus |
FR1513227A (fr) * | 1966-01-03 | 1968-02-16 | Dispositif d'alimentation en huile sous pression d'une pompe mécanique à vide, étanche à l'arrêt de la pompe | |
DE3325261A1 (de) * | 1983-07-13 | 1985-01-24 | Robert Bosch Gmbh, 7000 Stuttgart | Vakuumpumpe |
JPS62291488A (ja) * | 1986-06-11 | 1987-12-18 | Toshiba Corp | 油回転真空ポンプ |
DE4208194A1 (de) * | 1992-03-14 | 1993-09-16 | Leybold Ag | Verfahren zum betrieb einer oelgedichteten vakuumpumpe sowie fuer die durchfuehrung dieses verfahrens geeignete vakuumpumpe |
US7186099B2 (en) * | 2005-01-28 | 2007-03-06 | Emerson Climate Technologies, Inc. | Inclined scroll machine having a special oil sump |
DE102006016241A1 (de) * | 2006-03-31 | 2007-10-04 | Joma-Hydromechanic Gmbh | Rotorpumpe |
DE102007043594B4 (de) * | 2007-09-13 | 2009-11-26 | Handtmann Systemtechnik Gmbh & Co. Kg | Spiralverdichter mit Doppelspirale |
-
2010
- 2010-06-02 DE DE112010002597T patent/DE112010002597A5/de not_active Withdrawn
- 2010-06-02 WO PCT/DE2010/000622 patent/WO2010145634A2/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004074687A2 (de) | 2003-02-20 | 2004-09-02 | Luk Automobiltechnik Gmbh & Co. Kg | Vakuumpumpe mit einem kunststoffflügel |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013084100A1 (en) * | 2011-12-05 | 2013-06-13 | Vhit S.P.A. | System, pump and method of vacuum generation for applications to motor vehicles |
US9739269B2 (en) | 2011-12-05 | 2017-08-22 | Vhit S.P.A. | System, pump and method of vacuum generation for applications to motor vehicles |
EP2952742A1 (de) * | 2014-06-05 | 2015-12-09 | WABCO Europe BVBA | Vakuumpumpe und System aus einer Vakuumpumpe und einem Motor |
WO2015185177A1 (en) * | 2014-06-05 | 2015-12-10 | Wabco Europe Bvba | Vacuum pump and system of a vacuum pump and an engine |
US10480465B2 (en) | 2014-06-05 | 2019-11-19 | Wabco Europe Bvba | Vacuum pump and system of a vacuum pump and an engine |
Also Published As
Publication number | Publication date |
---|---|
DE112010002597A5 (de) | 2012-10-11 |
WO2010145634A3 (de) | 2011-09-15 |
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