EP2626510A1 - Pompe à vide pour agrégat auxiliaire de véhicule automobile - Google Patents

Pompe à vide pour agrégat auxiliaire de véhicule automobile Download PDF

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Publication number
EP2626510A1
EP2626510A1 EP12155185.7A EP12155185A EP2626510A1 EP 2626510 A1 EP2626510 A1 EP 2626510A1 EP 12155185 A EP12155185 A EP 12155185A EP 2626510 A1 EP2626510 A1 EP 2626510A1
Authority
EP
European Patent Office
Prior art keywords
pump
rotor
vacuum pump
vehicle auxiliary
integral body
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
Application number
EP12155185.7A
Other languages
German (de)
English (en)
Other versions
EP2626510B1 (fr
Inventor
Sebastian Cramer
Daniel Müller
Nabil Salim AL-HASAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Priority to EP12155185.7A priority Critical patent/EP2626510B1/fr
Publication of EP2626510A1 publication Critical patent/EP2626510A1/fr
Application granted granted Critical
Publication of EP2626510B1 publication Critical patent/EP2626510B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F04C2220/12—Dry running
    • 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
    • F04C2230/40—Heat treatment
    • F04C2230/41—Hardening; Annealing
    • 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
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/92—Surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Definitions

  • the invention relates to a motor vehicle auxiliary unit vacuum pump, which is designed as an electric motor driven and dry running vane pump.
  • auxiliary unit vacuum pumps are used in motor vehicles to supply other units, such as a brake booster, with a negative pressure of, for example, 100 millibar absolute and lower and / or an overpressure.
  • electric motor driven vacuum pumps are used, which are generally designed as vane pumps with at least three rotor vanes.
  • the typical construction of an automotive auxiliary power unit vacuum pump is known.
  • the motor rotor is in a housing pot, which is closed proximally by a bearing plate, which has a radial bearing for supporting the rotor shaft.
  • On the motor side facing away from the bearing plate connects to a separate first thrust washer of the pump housing, which forms a pump housing together with a second thrust washer and a circular cam ring, which defines or encloses a pump chamber.
  • the pump rotor is arranged, whose rotor body has a plurality of rotor blades mounted displaceably therein.
  • the assembly of the vacuum pump is complex because it consists of many parts and the housing pot, the bearing plate and the cam must be aligned axially exactly together.
  • the object of the invention is to simplify the assembly of a motor vehicle auxiliary unit vacuum pump, which is designed as an electric motor driven and dry running vane pump.
  • the lifting ring is made of aluminum and hardened over its entire surface.
  • Aluminum components are very light with high stability, and by hardening also sufficiently protected against wear by the softer rotor blade head.
  • the aluminum lifting ring is anodized over the entire surface, and provided in this way with a so-called hardcoat smooth coating.
  • Such a hard anodized layer is sufficiently hard, so that a high wear resistance of the cam ring is ensured.
  • the bearing plate, the axially proximal thrust washer, which adjoins the bearing plate, and the lifting ring are formed by a single integral integral body.
  • the integral body has the endshield function, thus shuts off the motor housing pot at its axial-proximal end, and forms or holds a radial bearing for the rotor shaft.
  • the radial bearing can be a plain bearing or a rolling bearing.
  • the end shield and the adjacent thrust washer may be formed by a single disk body, one side of which forms the end shield and the other side forms the adjacent thrust washer. Adjacent to the thrust washer of the cam ring, which forms the peripheral wall of the pump chamber of the pump section.
  • the one-piece design of the integral body the heat transfer between the electric motor section and the pump section is significantly improved. This improves the cooling of the warmer of the two sections.
  • the integral body is preferably a die-cast aluminum body.
  • Die-cast aluminum body can have complex shapes, are sufficiently stable, heat-resistant, corrosion-resistant, have a relatively good thermal conductivity, have a low weight and are sufficiently inexpensive to produce in large quantities.
  • the integral body is hardened over its entire surface, and in the case of an aluminum body, the integral body is preferably anodized over the whole area, and in this way provided with a so-called hardcoat smooth coating.
  • a hard anodizing layer is sufficiently hard, so that it grants a high wear resistance especially of the cam ring.
  • the integral body has at least one radial mounting nose with a plug-in opening for inserting a mounting screw.
  • the integral body has a further additional function, which causes only small additional costs because of the integration into a single component.
  • the integral body has a pump chamber inlet opening and / or outlet opening.
  • the integral body may possibly combine other functions.
  • a motor vehicle auxiliary unit vacuum pump 10 is shown, which is designed as an electric motor driven and dry running vane pump.
  • the vacuum pump 10 is used in a motor vehicle, which is driven for example by an internal combustion engine, as an auxiliary unit for providing a negative pressure of 100 millibar absolute or less.
  • the vacuum pump 10 is operated at a constant rated speed of about 3000 rpm, but may be basically be operated at a variable speed.
  • the vacuum pump 10 is functionally and longitudinally divided into an electric motor section 12 and a pump section 14.
  • a rotatably mounted rotor shaft 18 is provided on the rotationally fixed motor rotor 17 is fixed, which may be formed, for example, permanently magnetically excited.
  • a fixed motor stator 19 is provided with a plurality of stator coils.
  • the motor housing is essentially formed by a housing pot 16 having at its axial-distal end a bearing recess 15 for a radial-axial bearing 13, which may be formed, for example, as a rolling bearing.
  • the electric motor section 12 is closed at the proximal end by a bearing plate 22, which carries a radial bearing 25 for supporting the rotor shaft 18.
  • the radial bearing 25 is designed as a rolling bearing, but may in principle be designed as a plain bearing.
  • the bearing plate 22 is formed by a plane lying in a transverse plane disk body 27, which is part of a one-piece integral body 20.
  • the pump section 14 is formed by the rotor shaft 18, on which a floating bearing rotor 30 is rotatably attached, the pump housing 29 and a cover plate 50.
  • the pump rotor 30 has a rotor body 32 with at least three slidably mounted on the rotor body 32 rotor blades 34 whose Rotor blade heads are made of graphite and the several pump cells separate from each other.
  • the rotor body 32 is fixed against rotation and to some extent axially displaceable on the rotor shaft 18, so that the pump rotor 30 can always assume a frictionless axial position between the two thrust washers 24,40.
  • the pump housing 29 is axially by an axially proximal thrust washer 24, with respect to the pump rotor 30 of the axial-proximal thrust washer 24 opposite axial-distal thrust washer 40 and a cam ring 26 is formed.
  • the inner diameter of the pump housing 29 is for example about 50 mm, wherein the axial length is for example about 33 mm.
  • a pump chamber inlet opening 42 and two pump chamber outlets 44, 46 provided with corresponding check valves are provided in the axial-distal thrust washer 40.
  • the end disc 50 which is distally immediately adjacent to the axial-distal thrust washer 40, has a pump inlet port 52 fluidly connected to the pump chamber inlet port 42 and a pump outlet port 54 fluidly connected to the two pump chamber ports 44, 46 ,
  • the one-piece integral body 20 has the disk body 27 with the bearing plate 22 and the axially proximal thrust washer 24 and the cam ring 26.
  • the integral body 20 is a one-piece aluminum die-cast part, which is provided over its entire surface with a so-called smooth-hardcoat coating which has been produced by anodizing the integral body 20.
  • the vacuum pump 10 can be mounted in a simple manner in or on the relevant motor vehicle.
  • the pump chamber inlet and or outlet are also integrated into the integral body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP12155185.7A 2012-02-13 2012-02-13 Pompe à vide pour agrégat auxiliaire de véhicule automobile Active EP2626510B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12155185.7A EP2626510B1 (fr) 2012-02-13 2012-02-13 Pompe à vide pour agrégat auxiliaire de véhicule automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12155185.7A EP2626510B1 (fr) 2012-02-13 2012-02-13 Pompe à vide pour agrégat auxiliaire de véhicule automobile

Publications (2)

Publication Number Publication Date
EP2626510A1 true EP2626510A1 (fr) 2013-08-14
EP2626510B1 EP2626510B1 (fr) 2017-11-15

Family

ID=45655653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12155185.7A Active EP2626510B1 (fr) 2012-02-13 2012-02-13 Pompe à vide pour agrégat auxiliaire de véhicule automobile

Country Status (1)

Country Link
EP (1) EP2626510B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105485009A (zh) * 2015-12-30 2016-04-13 吉林东光奥威汽车制动系统有限公司 一种汽车制动系统用电动真空泵
DE102016112555A1 (de) 2016-07-08 2018-01-11 Pierburg Pump Technology Gmbh Kfz-Hilfsaggregat-Vakuumpumpe
US11286929B2 (en) * 2018-03-06 2022-03-29 Schwäbische Hüttenwerke Automotive GmbH Vacuum pump sealing element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514966A (en) * 1978-07-18 1980-02-01 Nippon Denso Co Ltd Eccentric rotary pump
US5149257A (en) * 1989-03-29 1992-09-22 Diesel Kiki Co., Ltd. Compressor with a cylinder having improved seizure resistance and improved wear resistance, and method of manufacturing the cylinder
DE19936644A1 (de) 1999-08-04 2001-02-15 Hella Kg Hueck & Co Elektrische Luftpumpe für Kraftfahrzeuge
DE102006058980A1 (de) * 2006-12-14 2008-06-19 Hella Kgaa Hueck & Co. Flügelzellenpumpe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514966A (en) * 1978-07-18 1980-02-01 Nippon Denso Co Ltd Eccentric rotary pump
US5149257A (en) * 1989-03-29 1992-09-22 Diesel Kiki Co., Ltd. Compressor with a cylinder having improved seizure resistance and improved wear resistance, and method of manufacturing the cylinder
DE19936644A1 (de) 1999-08-04 2001-02-15 Hella Kg Hueck & Co Elektrische Luftpumpe für Kraftfahrzeuge
DE102006058980A1 (de) * 2006-12-14 2008-06-19 Hella Kgaa Hueck & Co. Flügelzellenpumpe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105485009A (zh) * 2015-12-30 2016-04-13 吉林东光奥威汽车制动系统有限公司 一种汽车制动系统用电动真空泵
CN105485009B (zh) * 2015-12-30 2017-09-22 吉林东光奥威汽车制动系统有限公司 一种汽车制动系统用电动真空泵
DE102016112555A1 (de) 2016-07-08 2018-01-11 Pierburg Pump Technology Gmbh Kfz-Hilfsaggregat-Vakuumpumpe
WO2018007052A1 (fr) 2016-07-08 2018-01-11 Pierburg Pump Technology Gmbh Pompe à vide de groupe auxiliaire de véhicule automobile dotée d'un élément bride d'un seul tenant
CN109415938A (zh) * 2016-07-08 2019-03-01 皮尔伯格泵技术有限公司 带有一体式法兰元件的机动车辅助装置真空泵
US11078912B2 (en) 2016-07-08 2021-08-03 Pierburg Pump Technology Gmbh Automotive auxiliary assembly vacuum pump having a single-piece flange element
DE102016112555B4 (de) 2016-07-08 2021-11-25 Pierburg Pump Technology Gmbh Kfz-Hilfsaggregat-Vakuumpumpe
EP3482047B1 (fr) * 2016-07-08 2022-12-21 Pierburg Pump Technology GmbH Pompe à vide de groupe auxiliaire de véhicule automobile dotée d'un élément bride d'un seul tenant
US11286929B2 (en) * 2018-03-06 2022-03-29 Schwäbische Hüttenwerke Automotive GmbH Vacuum pump sealing element

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