CN109416043B - Vacuum pump for motor vehicle - Google Patents
Vacuum pump for motor vehicle Download PDFInfo
- Publication number
- CN109416043B CN109416043B CN201680087398.4A CN201680087398A CN109416043B CN 109416043 B CN109416043 B CN 109416043B CN 201680087398 A CN201680087398 A CN 201680087398A CN 109416043 B CN109416043 B CN 109416043B
- Authority
- CN
- China
- Prior art keywords
- pump
- lubricant
- filter element
- pump rotor
- motor vehicle
- 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.)
- Active
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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
- 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
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
-
- 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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and 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
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Abstract
The invention relates to a motor vehicle vacuum pump (2), wherein a lubricant supply assembly (30) is used for lubricating a pump chamber (23) and/or a pump rotor plain bearing assembly (28) and/or a coupling element (34), wherein the lubricant supply assembly (30) has at least one stationary lubricant supply duct (46) in a pump housing (10), through which duct lubricant can be pumped from a lubricant inlet opening (36) of the pump housing (10) through a supply duct in the direction of the pump chamber (23) and/or the pump rotor plain bearing assembly (28) and/or the coupling element (34) in the direction of a lubricant outlet opening (48). Wherein a sealing element (45) is arranged in the region of the lubricant inlet opening (36), wherein a filter element (40) is arranged at the lubricant inlet opening (36), wherein the sealing element (45) and the filter element (40) form a combined sealing/filter element (38).
Description
Technical Field
The invention relates to a vacuum pump for a motor vehicle, comprising a pump housing which encloses a pump chamber, wherein a pump rotor having at least one movably mounted pump rotor blade is rotatably mounted in the pump chamber by means of a pump rotor bearing arrangement, said pump rotor being directly or indirectly connected to a drive shaft by means of a coupling unit, said coupling unit being rotatably fixed to the pump rotor, wherein a lubricant supply assembly serves for lubricating the pump chamber and/or the pump rotor bearing arrangement and/or the coupling unit, wherein the lubricant supply assembly has at least one stationary lubricant supply duct in the pump housing, through which duct lubricant can be pumped from a lubricant inlet opening of the pump housing through the supply duct in the direction of a lubricant outlet opening along the pump chamber and/or the pump rotor bearing arrangement and/or the coupling unit. Wherein a sealing element is arranged in the region of the lubricant inlet opening and a filter element is arranged in the region of the lubricant inlet opening.
Background
From WO2013/024117a2, for example, a mechanical motor vehicle vacuum pump is known, which comprises a lubricant supply assembly, wherein a liquid lubricant is conveyed through a stationary lubricant supply conduit in a pump housing via a lubricant outlet opening into a lubricant duct which extends axially on a hollow cylindrical surface of the pump housing, thereby ensuring a sliding mounting of the pump rotor.
Here again, the lubricant supply assembly ensures that the running surface of at least one rotor blade in the pump housing is lubricated. For this purpose, a lubricant pump is provided outside the vacuum pump, which pumps lubricant to the lubricant inlet opening. The vacuum pump is rotationally fixedly connected to a crankshaft or drive shaft of the internal combustion engine by means of a plug-in coupling assembly. The plug-in coupling assembly consists of plug-in coupling elements which are configured complementarily to one another and which comprise one or more pawls which engage in corresponding recesses of a corresponding further plug-in coupling element.
In order to protect the lubricant supply assembly from contamination, a filter is provided in the region of the lubricant inlet opening. Further, a sealing element is provided to prevent undesired leakage of lubricant to the outside of the lubricant supply assembly. This arrangement is complex and sensitive to dynamic stresses associated with the seal.
Disclosure of Invention
The object of the present invention is to provide a vacuum pump for motor vehicles, the lubricant supply device of which is simple in construction and contributes to avoiding the above-mentioned drawbacks.
According to the invention, this object is achieved by a sealing element and a filter element configured as a combined sealing/filter element, so that the function of the lubricant supply assembly is ensured in a particularly simple and cost-effective manner. Here, according to the application, the pump chamber, the pump rotor bearing arrangement and/or the coupling element may be lubricated. The pump may be a mechanical vacuum pump or an electric vacuum pump.
Preferably, the sealing element is arranged on an edge piece of the filter element. Thus, conventional filter elements may be used to form a combined sealing/filtering element. A filter element is understood here to mean a single-part or multi-part filter element.
Alternatively, the combined seal/filter element may be of a single piece type. In this case, it is particularly advantageous if the sealing element is injection-molded onto the filter element.
It is particularly advantageous if the filter element comprises a filter nozzle for restricting the flow.
As a particularly advantageous embodiment, the outer surface of the pump rotor is mounted on a hollow-cylindrical surface of the pump housing, wherein the lubricant supply assembly is configured such that the lubricant outlet opening is at least temporarily in fluid connection with a lubricant duct extending axially on the hollow-cylindrical surface. Of course, the lubricant supply assembly may be configured differently therefrom. In particular, further ducts and openings may be provided.
As a particularly advantageous embodiment, the lubricant duct opens into the pump chamber so that lubricant can be delivered to the pump chamber. Thus, lubrication of the running surface is ensured in a simple manner. It is advantageous here if the lubricant duct opens out towards the lubricant duct.
Drawings
Exemplary embodiments of the invention are described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 shows a longitudinal section through a vacuum pump for a motor vehicle according to the invention
FIG. 2 shows an enlarged view of the combined sealing/filtering element of the vacuum pump of the motor vehicle of FIG. 1
Detailed Description
Fig. 1 schematically shows a vacuum pump assembly, which is composed of a motor vehicle vacuum pump 2, an internal combustion engine 4 and a lubricant pump 6 connected to the internal combustion engine 4. Here, the vacuum pump 2 is mechanically rotatably coupled to a crankshaft or drive shaft of the internal combustion engine 4 by means of a plug-in coupling assembly 8. However, it is also possible to configure it as an electric vacuum pump. Such an electric vacuum pump can also be connected directly to the drive shaft without a coupling assembly in between. For example, the vacuum pump 2 is used to provide an actuating vacuum for various accessory elements of a motor vehicle, such as a pneumatic brake booster. The lubricant pump 6 delivers liquid lubricant for the lubricant supply of the internal combustion engine 4 and the lubricant supply of the vacuum pump 2.
The vacuum pump 2 is a so-called vane pump, and includes a pump housing 10, and the pump housing 10 is mainly composed of a housing main body 12 and a housing cover 14. In the pump housing 10, a pump rotor 16 is arranged, which pump rotor 16 is rotatable about a longitudinal axis and has movably mounted pump rotor blades 18. In order to create a vacuum which can be used by the consumer, the two ends of the eccentrically mounted pump rotor blades 18 are guided through the running surface 20 of the housing body 12, so that the air which is sucked in through the inlet manifold 22 is compressed in the pump chamber 23 and discharged through the outlet manifold which is not shown in the figure, the pump chamber 23 being surrounded by the pump housing 10 and divided into two parts by the pump rotor 16.
The pump rotor 16 has a pump rotor outer surface 24 which, together with a hollow cylindrical surface 26 of the pump housing 10, forms a slide bearing assembly 28. To ensure lubricant supply to the plain bearing assembly 28 and the running surface 20 of the housing body 12, a lubricant supply assembly 30 is provided in fluid communication with the lubricant pump 6.
The pump housing 10 includes a flange surface 32 that is provided on a suitable portion of the internal combustion engine. For connection to a drive shaft, not shown, a coupling element 34 of the coupling arrangement 8 is provided, which is coupled in a rotationally fixed manner to the pump rotor 16 in a known manner.
To ensure a tight seal and dust-proof of the lubricant supply assembly, which is also subjected to high dynamic pressures, a lubricant inlet opening 36 is arranged on the flange surface 32, in which opening a combined sealing/filter element 38 is press-fitted. As shown particularly in fig. 2, in the present exemplary embodiment, the combined sealing/filter element 38 is composed of a filter element 40, which in the present exemplary embodiment mainly comprises a filter nozzle 41 for restricting the flow, a rim element 42 and a stuck-on filter disk 44. An annular seal 45 is placed on the edge element 42. Alternatively, the combined seal/filter element 38 may be in a single piece. The single-piece construction generally refers to a single-piece construction of the edge piece 42 and the seal 45 of the filter element 40, wherein the seal 45 is injection molded onto the filter element 40. However, the filter disc 44 may also be integrated by die casting.
In this way, lubricant is pumped by the lubricant pump 6 through the inlet opening 36 with the combined sealing/filter element 38 into the lubricant supply conduit 46 of the adjoining lubricant supply assembly 30, the process being illustrated by the solid lines. The lubricant supply conduit 46 has a lubricant outlet opening 48 that is at least temporarily in fluid communication with a lubricant conduit 50 that extends axially at the hollow cylindrical surface 26 by rotation of the pump rotor 16. In this manner, the sliding bearing assembly 28 is sufficiently supplied with the lubricant.
As the lubricant duct 50 opens out and opens towards the pump chamber 23, lubricant is supplied into the pump chamber 23 and lubricates the running surface 20 in a known manner and returns to the lubricant pump 6 via an outlet opening, not shown, which is indicated by a dashed line.
If desired, the coupling element 34 may be integral with the lubricant supply assembly. In the case of so-called dry vacuum pumps, it is possible, for example, to lubricate only the pump rotor bearing assembly.
Claims (3)
1. A motor vehicle vacuum pump (2) comprising a pump housing (10) enclosing a pump chamber (23), wherein a pump rotor (16) having at least one movably mounted pump rotor blade (18) is rotatably mounted in the pump chamber (23) by means of a pump rotor plain bearing assembly (28), the pump rotor (16) being directly or indirectly connected with a drive shaft by means of a coupling element (34), the coupling element (34) being rotatably fixed to the pump rotor (16), wherein a lubricant supply assembly (30) is provided for lubricating the pump chamber (23) and/or the pump rotor plain bearing assembly (28) and/or the coupling element (34), wherein the lubricant supply assembly (30) has at least one stationary lubricant supply duct (46) in the pump housing (10) through which lubricant can pass from a lubricant inlet opening (36) of the pump housing (10), pumping in the direction of the pump chamber (23) and/or the pump rotor plain bearing assembly (28) and/or the coupling element (34) in the direction of a lubricant outlet opening (48), wherein a seal (45) is provided in the region of the lubricant inlet opening (36), wherein a filter element (40) is provided in the region of the lubricant inlet opening (36),
it is characterized in that
The seal (45) and the filter element (40) forming a combined seal/filter element (38);
the combined sealing/filtering element (38) is formed in one piece;
the filter element comprises a filter nozzle for limiting the flow, an edge element and a filter disc clamped on the edge element;
the sealing member being disposed on the edge member, the filter element edge member being of one-piece construction with the sealing member; and is
The seal is injection molded onto the edge piece.
2. Motor vehicle vacuum pump (2) according to claim 1, characterized in that the pump rotor outer surface (24) is mounted on a hollow cylindrical surface (26) of the pump housing (10), wherein the lubricant supply assembly (30) is configured such that the lubricant outlet opening (48) is at least temporarily in fluid connection with a lubricant duct (50) extending axially on the hollow cylindrical surface (26).
3. The motor vehicle vacuum pump (2) according to claim 2, characterized in that the lubricant duct (50) is open towards the pump chamber (23) so that lubricant can be delivered to the pump chamber (23).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2016/066731 WO2018010793A1 (en) | 2016-07-14 | 2016-07-14 | Motor vehicle vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109416043A CN109416043A (en) | 2019-03-01 |
| CN109416043B true CN109416043B (en) | 2020-11-24 |
Family
ID=56411641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680087398.4A Active CN109416043B (en) | 2016-07-14 | 2016-07-14 | Vacuum pump for motor vehicle |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20190226483A1 (en) |
| EP (1) | EP3485167A1 (en) |
| CN (1) | CN109416043B (en) |
| WO (1) | WO2018010793A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017126750A1 (en) * | 2017-11-14 | 2019-05-16 | Schwäbische Hüttenwerke Automotive GmbH | pumping device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771624A (en) * | 1971-10-20 | 1973-11-13 | Analysts Inc | Contaminant collection means for recirculating fluid system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100605377B1 (en) * | 2004-07-06 | 2006-08-02 | 발레오전장시스템스코리아 주식회사 | Pump rotor of vaccum pump for vehicle |
| WO2010043202A2 (en) * | 2008-10-15 | 2010-04-22 | Ixetic Hückeswagen Gmbh | Vacuum pump |
| CN201463278U (en) * | 2009-06-26 | 2010-05-12 | 陈和 | Sealing filtration device arranged outside wall-mounted gas-fired boiler |
| EP2559903A1 (en) * | 2011-08-17 | 2013-02-20 | Wabco Automotive UK Limited | Improved vacuum pump |
| CN104386050B (en) * | 2014-11-10 | 2017-09-01 | 昌通科技有限公司 | Brake valve core screen pack |
| EP3032105B1 (en) * | 2014-12-12 | 2021-05-19 | Pierburg Pump Technology GmbH | Mechanical motor vehicle vacuum pump |
| CN204610269U (en) * | 2015-03-06 | 2015-09-02 | 浙江安露清洗机有限公司 | A kind of transparent water inflow filter |
-
2016
- 2016-07-14 WO PCT/EP2016/066731 patent/WO2018010793A1/en unknown
- 2016-07-14 CN CN201680087398.4A patent/CN109416043B/en active Active
- 2016-07-14 EP EP16738786.9A patent/EP3485167A1/en active Pending
- 2016-07-14 US US16/317,031 patent/US20190226483A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771624A (en) * | 1971-10-20 | 1973-11-13 | Analysts Inc | Contaminant collection means for recirculating fluid system |
Also Published As
| Publication number | Publication date |
|---|---|
| US20190226483A1 (en) | 2019-07-25 |
| EP3485167A1 (en) | 2019-05-22 |
| WO2018010793A1 (en) | 2018-01-18 |
| CN109416043A (en) | 2019-03-01 |
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| GR01 | Patent grant |