WO2011066817A2 - Vakuumpumpe - Google Patents
Vakuumpumpe Download PDFInfo
- Publication number
- WO2011066817A2 WO2011066817A2 PCT/DE2010/001341 DE2010001341W WO2011066817A2 WO 2011066817 A2 WO2011066817 A2 WO 2011066817A2 DE 2010001341 W DE2010001341 W DE 2010001341W WO 2011066817 A2 WO2011066817 A2 WO 2011066817A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vacuum pump
- pressure
- suction
- pump according
- valve
- 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
-
- 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
- F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
- F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/105—Three-way check or safety valves with two or more closure members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
Definitions
- the invention relates to a vacuum pump with a suction valve, via which a working medium, such as air, can be sucked into a working space of the vacuum pump.
- the suction valve is designed for example as a check valve, which can only be flowed through in one direction.
- the object of the invention is to avoid an undesired overpressure in a working space of a vacuum pump with a suction valve, via which a working medium, such as air, can be sucked into the working space of the vacuum pump.
- the object is in a vacuum pump with a suction valve, via which a working medium, such as air, is sucked into a working space of the vacuum pump, wherein the suction valve is combined with a pressure relief valve, which allows the reduction of an overpressure in the working space, achieved in that Pressure limiting valve comprises a slide having a pressure acting surface, which is acted upon by the working space pressure.
- the pressure acting surface preferably has substantially the shape of a circular disk. Due to operational reasons and / or incorrect operation, pressure peaks may occur in the working space of the vacuum pump which lead to damage of the vacuum pump. Due to the pressure relief valve according to the invention, which is preferably designed as a safety valve, the pressure peaks can be safely broken down in a simple manner.
- a preferred embodiment of the vacuum pump is characterized in that the pressure limiting valve is arranged together with the suction valve in a suction nozzle of the vacuum pump.
- the suction nozzle which is also referred to as inlet nozzle, can be designed as a separate component or integrated into the vacuum pump.
- the pressure relief valve and the suction valve can be pre-assembled in the suction nozzle.
- a further preferred embodiment of the vacuum pump is characterized in that at least one suction through hole is provided in the pressure acting surface, which is closable by a Saugventil ecology.
- the pressure acting surface is preferably connected via the Saug screengangsloch with a suction chamber in the vacuum pump in combination.
- a plurality of through holes are provided in the pressure acting surface, which are closable by the Saugventilomics.
- the suction valve body is made of plastic and / or has the shape of a screen which is attached to the slide of the pressure relief valve.
- the screen may, for example, have a central pin with a thickening at the end. The pin then extends, for example, through a central through hole in the pressure acting surface. The thickening at the end of the pin serves to hold the pin to the slider.
- a further preferred embodiment of the vacuum pump is characterized in that the slide is arranged by a spring in a closed position in which a pressure reduction opening is closed.
- the slider for example, against a stop, be biased in its closed position.
- a further preferred embodiment of the vacuum pump is characterized in that the slide against the spring force of the spring is movable into an open position in which the pressure reduction opening communicates with the working space.
- the slide moves in response to the force acting on the pressure acting surface or the Saugventil stresses pressure from its closed position to the open position to allow a pressure reduction in the working space. If the pressure in the working space is reduced, then the slider moves back to its closed position due to the spring force.
- a further preferred embodiment of the vacuum pump is characterized in that the pressure reduction opening is provided in one or the suction nozzle.
- the pressure relief opening is preferably in a pressure reduction channel, which is provided in the housing of the vacuum pump.
- a further preferred embodiment of the vacuum pump is characterized in that the slide is guided in a reciprocating manner to and fro the suction nozzle.
- sealing elements such as O-rings, can be arranged between the slide and the suction nozzle.
- a further preferred embodiment of the vacuum pump is characterized in that the suction nozzle has a first axial portion with a connection diameter which is smaller than a valve diameter of a second axial portion of the suction nozzle.
- the first axial section is used, for example, for connecting a suction line to the suction nozzle.
- the second axial section preferably serves for receiving the pressure limiting valve and the suction valve.
- the two axial sections are integrally connected to one another, preferably by a shoulder.
- a further preferred embodiment of the vacuum pump is characterized in that the slide is designed as a piston valve with a circular cylindrical jacket-shaped guide body.
- the guide body is guided back and forth in the second axial portion of the suction nozzle.
- the outer diameter of the guide body is, with a corresponding guide clearance, adapted to the inner diameter of the second axial portion of the suction nozzle.
- a further preferred embodiment of the vacuum pump is characterized in that the spool is open at one end and closed at the other end by a cover on which the pressure-acting surface is formed.
- the lid preferably has substantially the shape of a circular disk and is preferably integrally connected to the guide body.
- the Saug tellgangsloch is provided, which is closed by the Saugventilanalysis.
- the SaugventilAvem is preferably attached to the lid.
- a further preferred embodiment of the vacuum pump is characterized in that the vacuum pump is designed as a vane pump with a rotor having at least one wing, which divides the working space in the housing into a suction chamber and a pressure chamber.
- the structure and function of a vane pump are known.
- the housing can be made in one or more parts.
- the formation of suction and pressure chamber in the working space depends on the direction of rotation of the rotor.
- a negative pressure prevails in the suction chamber.
- an overpressure may occur in the suction chamber, which is automatically degraded by the combined with the suction valve pressure relief valve according to an essential aspect of the invention.
- a further preferred embodiment of the vacuum pump is characterized in that the suction nozzle are designed with the suction valve and the pressure relief valve as a unit which can be mounted in or on a housing of the vacuum pump.
- the assembly according to the invention can be used in a simple manner in conventional vacuum pumps by the conventional suction with the suction valve is replaced by a suction nozzle according to the invention with a channel to the discharge side of the pump.
- Figure 1 is a vacuum pump in the open state without a lid in the
- Figure 2 shows a detail of Figure 1 with an inventive
- FIG 3 shows the same section as in Figure 2 with the Druckbegren
- a vacuum pump 1 is shown in the open state without a lid in front view.
- the vacuum pump 1 comprises a housing 2 with a housing pot 4 and a lid. Outside of the housing pot 4, an inlet nozzle 6 is provided, via which a working medium, such as air, is sucked into a working space 8 in the interior of the housing 2 when the vacuum pump 1 is driven.
- a working medium such as air
- the working space 8 is limited in the radial direction by a circulation contour 10, which is also referred to as a stroke contour.
- a circulation contour 10 which is also referred to as a stroke contour.
- the working space 8 is bounded by the bottom of the housing pot 4 and the lid.
- a wing 12 is driven by a rotor 14.
- the wing 12 is guided in a wing receiving slot of the rotor 14 within the circulation contour 10 slidably.
- At the ends of the wing 12 caps are attached to the the circulation contour 10 abut.
- the rotor 14 hugs with its outer contour in a Schmiegespalt 16 to the circulation contour 10th
- the suction chamber 18 is also referred to as a suction chamber.
- the pressure chamber 20 is also referred to as a pressure chamber.
- the suction chamber 18 communicates with the inlet port 6 of the vacuum pump 1 in connection.
- the working fluid, in particular air sucked into the suction chamber 18 and mixed with lubricant, in particular with oil, to form an air-lubricant mixture and pressurized in the pressure chamber 20.
- the working space 8 in the interior of the vacuum pump 1 is connected via an outlet opening 21 to the surroundings of the vacuum pump 1, in particular to a crankcase of an internal combustion engine of the motor vehicle.
- the outlet opening 21 connects the pressure space 20 with the surroundings of the vacuum pump 1.
- FIGS. 2 and 3 a detail of a housing 42 of the vacuum pump 1 from FIG. 1 with a suction nozzle 46 is shown in longitudinal section, which is also referred to as an inlet nozzle.
- the suction port 46 is connected via a connecting channel 49 with a working space 48 of the vacuum pump in conjunction, which is designated in Figure 1 with 8.
- the connecting channel 49 widens to a receiving opening 50, in which the suction nozzle 46 is partially arranged. From the receiving opening 50, a pressure reduction channel 52 goes off, which is in communication with a pressure relief space, for example, the environment.
- the suction nozzle 46 includes a first axial portion 54, which serves to connect a suction line to the suction nozzle 46.
- the first axial portion 54 has the shape of a straight circular cylinder jacket, which has a smaller diameter than a second axial portion 55 which is integrally connected by a shoulder 56 with the first axial portion 54.
- the suction nozzle 46 is pressed with the second axial portion 55 in the receiving opening 50, clipped or otherwise attached thereto.
- the suction nozzle 46 can also be screwed into the receiving opening 50 with the second axial portion 55, if corresponding threads are provided on the two components.
- a pressure relief valve 58 and a suction valve 60 are combined.
- this combination enables a suction valve function, in which the suction nozzle 46 can be flowed through from the first axial section 54 to the working chamber 48 in order to draw a working medium, such as air, into the working space 48.
- the pressure relief valve 58 allows the reduction of an overpressure in the working space 48 via the pressure reduction channel 52 in the pressure relief space or the environment.
- the pressure limiting valve 58 comprises a slide 62, which is designed as a piston slide.
- the slider 62 is guided with a guide body 63 movable back and forth in the second axial portion 55 of the suction nozzle 46.
- the guide body 63 has substantially the shape of a straight circular cylinder jacket and is open at one end and closed at the other end by a cover 67.
- a pressure acting surface 64 is formed on the side facing the working space 48, which is acted upon by the pressure from the working chamber 48.
- the lid 67 has, within the pressure acting surface 64, two suction through holes 65, 66 which are covered by a suction valve body 68.
- the Saugventil ecology 68 has the shape of a screen and is preferably made of plastic, for example of an elastomeric plastic or rubber. From the screen of Saugventil stressess 68 goes out a central pin which extends through a central through hole in the cover 67 and is fixed by a thickening at the free end of the pin to the cover 67.
- the Saugventil ecology 68 closes the two Saug tellgangslöcher 65, 66, so that an outflow of working fluid from the working space 48 and an associated negative pressure reduction is prevented in the brake booster.
- the Saugventil analyses 68 lifts from the Saug tellgangslöchern 65, 66 and releases a connection between the first axial portion 54 of the suction nozzle 46 and the working space 48 so that working fluid, such as Air, from a connected load, such as a brake booster, is sucked through the suction nozzle 46 into the working space 48.
- the spool 62 is biased by a pressure biased spring 70 against a stop ring
- the stop ring 71 which is fixed in the second axial section 55 of the suction nozzle 46, for example by a press fit.
- the stop ring 71 includes a plurality of through holes 73, 74, which allow the passage of working fluid in both directions.
- the slide 62 is in its open position, in which the pressure reduction opening 72 and the pressure reduction channel 52 are released from the guide body 63 of the slide 62.
- Arrows 75 to 79 in FIG. 3 indicate the working medium flowing out of the working space 48.
- the slide 62 which can be moved back and forth in the suction port 46, also serves to increase the volume or to increase the volume in the working space 48. This makes it possible to pick up an oil peak occurring during operation of the vacuum pump.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010004643T DE112010004643A5 (de) | 2009-12-04 | 2010-11-15 | Vakuumpumpe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009057099 | 2009-12-04 | ||
DE102009057099.3 | 2009-12-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011066817A2 true WO2011066817A2 (de) | 2011-06-09 |
WO2011066817A3 WO2011066817A3 (de) | 2013-02-21 |
Family
ID=44115348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2010/001341 WO2011066817A2 (de) | 2009-12-04 | 2010-11-15 | Vakuumpumpe |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112010004643A5 (de) |
WO (1) | WO2011066817A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109098971A (zh) * | 2017-06-21 | 2018-12-28 | 阿特拉斯·科普柯空气动力股份有限公司 | 入口阀及配备有入口阀的压缩机和压缩机元件 |
WO2022248252A1 (en) * | 2021-05-27 | 2022-12-01 | Atlas Copco Airpower, Naamloze Vennootschap | Element for compressing a gas and method for controlling such element |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4711224A (en) * | 1986-09-02 | 1987-12-08 | General Motors Corporation | Check valve in auxiliary vacuum system |
EP0449768B1 (de) * | 1990-03-30 | 1994-11-23 | Press Controls AG Rümlang | Schnellentlüftungsventil |
DE102005031422C5 (de) * | 2005-07-04 | 2012-09-27 | Hans Sasserath & Co. Kg | Systemtrenner |
WO2008009251A1 (de) * | 2006-07-21 | 2008-01-24 | Ixetic Hückeswagen Gmbh | Vakuumpumpe |
GB2447627B (en) * | 2007-03-20 | 2011-05-25 | Ford Global Tech Llc | A check valve for a vacuum pump |
-
2010
- 2010-11-15 DE DE112010004643T patent/DE112010004643A5/de not_active Withdrawn
- 2010-11-15 WO PCT/DE2010/001341 patent/WO2011066817A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109098971A (zh) * | 2017-06-21 | 2018-12-28 | 阿特拉斯·科普柯空气动力股份有限公司 | 入口阀及配备有入口阀的压缩机和压缩机元件 |
WO2022248252A1 (en) * | 2021-05-27 | 2022-12-01 | Atlas Copco Airpower, Naamloze Vennootschap | Element for compressing a gas and method for controlling such element |
BE1029442B1 (nl) * | 2021-05-27 | 2023-01-09 | Atlas Copco Airpower Nv | Element voor het samenpersen van een gas en werkwijze voor het regelen van dergelijk element |
Also Published As
Publication number | Publication date |
---|---|
DE112010004643A5 (de) | 2012-10-31 |
WO2011066817A3 (de) | 2013-02-21 |
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