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WO2000036303A1 - Pompe a vide a ailettes pour automobiles - Google Patents

Pompe a vide a ailettes pour automobiles Download PDF

Info

Publication number
WO2000036303A1
WO2000036303A1 PCT/JP1998/005642 JP9805642W WO0036303A1 WO 2000036303 A1 WO2000036303 A1 WO 2000036303A1 JP 9805642 W JP9805642 W JP 9805642W WO 0036303 A1 WO0036303 A1 WO 0036303A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
vacuum pump
rotor
housing
vane
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.)
Ceased
Application number
PCT/JP1998/005642
Other languages
English (en)
Japanese (ja)
Inventor
Shigeru Onoue
Tsuyoshi Yano
Tomoki Takahashi
Takashi Kinoshita
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to DE69839159T priority Critical patent/DE69839159T2/de
Priority to KR10-2000-7008554A priority patent/KR100385683B1/ko
Priority to EP98959196A priority patent/EP1055823B1/fr
Priority to PCT/JP1998/005642 priority patent/WO2000036303A1/fr
Priority to TW087120879A priority patent/TW414837B/zh
Publication of WO2000036303A1 publication Critical patent/WO2000036303A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • 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
    • 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
    • F01C21/08—Rotary pistons
    • 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
    • F04C18/3442—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 the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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
    • F04C29/0078—Fixing rotors on shafts, e.g. by clamping together hub and shaft

Definitions

  • the present invention relates to an improvement of a vane type vacuum pump for an automobile.
  • FIG. 9 is a side sectional view showing an example of the conventional automobile vane vacuum pump.
  • FIG. 10 is a sectional view of the conventional automobile vane vacuum pump shown in FIG. It is sectional drawing which shows the spline connection of.
  • the conventional vane-type vacuum pump for automobiles has a suction port 1 and a discharge port 2 and a cylindrical housing 4 and a bracket 5 connected to each other by bolts 3. And form a closed space.
  • the bracket 5 rotatably supports a shaft 7 by a pairing 8.
  • the shaft 7 is provided with a mouth 9 that is eccentrically housed in the housing 4 and can be rotated in the housing 4.
  • the mouth 9 is located in a radially extending vane groove 10 as shown in Fig.
  • a vane 11 is provided which rotates with the rotor 9 while sliding on the inner peripheral surface of the housing 4 at the outer edge thereof, and the fluid is sucked from the suction port 1 by the rotation of the mouth 9. Discharge pressure feed from outlet 2.
  • the shaft 7 is provided with a coupling 13 so that a rotational force can be input from the vehicle side.
  • the shaft 7 is also provided with a spline 14 so that torque can be transmitted in correspondence with the spline 15 of the mouth 9.
  • a rotational force is transmitted to the shaft 7 from the coupling 13
  • the rotor 9 rotates eccentrically in the housing 4, and the rotor 9 rotates in accordance with the eccentric rotation.
  • the vane 11 rotates from the rotor 9 while sliding on the inner peripheral surface of the housing 4 in an attempt to protrude radially outward due to centrifugal force, sucking fluid from the inlet 1 and sending pressure from the outlet 2 I do.
  • shaft 7 and mouth 9 are connected by splines 14 and 15 to form a spline connection.
  • splines 14 and 15 have high processing costs and high product prices.
  • the spline joints of splines 14 and 15 are lubricated with oil, but abnormal wear may occur due to the oil properties.
  • the spline connection is a loose connection, so it is difficult to obtain accuracy.
  • since spline coupling requires strength against the torque of the spline it is necessary to use a material with high strength.
  • iron-based sintered products have been used for the rotor 9, and steel has been used for the shaft 7. As a result, the product could not be reduced in weight.
  • the mouth 9 and the housing 4 are made of materials having different coefficients of thermal expansion, so that it is necessary to make a large gap between the mouth 9 and the housing to absorb the difference in thermal expansion.
  • the present invention has been made to solve the above-described problems, and its object is to reduce the processing cost by reducing the weight without causing abnormal wear between shafts, and to reduce the machining cost. It is to provide a pump. Disclosure of the invention
  • a cylindrical housing having an inlet and an outlet, a rotatable housing eccentrically housed in the housing, and a rotatable drive of the port.
  • a pump that has a shaft that rotates and a vane that slides on the inner peripheral surface of the housing as the rotor rotates, and that pumps fluid from the suction port to the outlet.
  • a vane type vacuum pump for an automobile wherein the shaft and the rotor are integrally fixed.
  • the shaft may be integrally formed by insert molding at the time of forming the mouth, the mouth may be formed by aluminum die casting, and the shaft may be integrally formed by plastic molding. In the evening, it may be formed by baking after molding with aluminum powder.
  • the protrusions or grooves on the outer periphery of the shaft may be formed integrally during cold forging of the shaft, and the protrusions or grooves on the outer periphery of the shaft may be formed integrally during production of the shaft by firing.
  • the protrusion of the shaft is fixed by welding an iron-based sheet metal molding to the outer periphery of the shaft.
  • the housing and the mouth may be formed of the same material.
  • FIG. 1 is a side sectional view showing one embodiment of a vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line AA of FIG.
  • FIG. 3 is a side view showing a second embodiment of the shaft of the vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 4 is a cross-sectional view taken along the line BB of FIG.
  • FIG. 5 is a side view showing a third embodiment of the vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 6 is a sectional view taken along the line C-C in FIG.
  • FIG. 7 is a side view showing a fourth embodiment of the shaft of the vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 8 is a cross-sectional view taken along the line DD in FIG.
  • FIG. 9 is a side sectional view of a conventional vane vacuum pump for a vehicle.
  • FIG. 10 is a cross-sectional view showing the spline connection between the shaft and the shaft of the conventional vane vacuum pump for a vehicle shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a side sectional view showing one embodiment of a vehicle vane vacuum pump according to the present invention
  • FIG. 2 is a sectional view taken along line A--A in FIG. The joint is shown.
  • the automotive vane vacuum pump of the present invention has the same structure as the automotive vane vacuum pump shown in FIGS. 9 and 10, and has an inlet 1 and an outlet 2. And A sealed space is formed by the cylindrical housing 4 and the bracket 5 connected to each other by bolts 3.
  • the bracket 5 rotatably supports the shaft 21 by a bearing 8.
  • the shaft 21 is provided with a rotatable member 24 eccentrically housed in the housing 4 and rotatable in the housing 4.
  • the mouth 24 is disposed in a radially provided vane groove 10, and the centrifugal force causes the vane groove 10 to project radially outward from the vane groove 10 as the rotor 24 rotates.
  • a vane 11 is provided on the peripheral surface that rotates together with the mouth 24 while sliding on its outer edge. The rotation of the rotor 24 sucks fluid from the inlet 1 and discharges it from the outlet 2. Pump.
  • the shaft 21 is provided with a coupling 13 so that a rotational force can be input from the vehicle side.
  • the shaft 21 is not provided with the splines 14 and 15 as shown in FIGS. 9 and 10, but with a shaft portion corresponding to the entire axial length of the housing 4 of the shaft body 22.
  • Two fin-like projections 23 extending in the radial direction and protruding in the radial direction are provided at radially opposite positions, and are fitted to the mouth 24 in correspondence with the two fin-like projections 23.
  • Two matching axial grooves 25 are provided, so that torque can be transmitted through these fin-shaped protrusions 23 and the axial grooves 25.
  • the number of the fin-like projections 23 may be one or more, as long as sufficient torque transmission and easiness of manufacture are ensured, and the axial length may be arbitrarily set.
  • the fin-like projections 23 shown in FIGS. 1 and 2 can be formed integrally with the shaft body 22 at the time of cold forging of the shaft 21, and when the shaft 21 is a sintered material, It can be formed, or it can be formed by fixing an iron-based sheet metal to the round shaft body 22 by welding.
  • the sheet metal molded product for example, it is preferable to use a molded product in which one end is flat and the other end is formed into a curved portion bent along the surface of the shaft body 22.
  • the mouth 24 is formed and integrally attached to such a shaft 21 by integral construction or integral molding. Due to such a configuration, the gap of the spline connection conventionally used is eliminated, and there is no gap between the shaft body 22 of the shaft 21 and the shaft 24.
  • the shaft can be integrally formed with the insert ⁇ during the construction of Rho-Yu.
  • the mouth may be integrally formed by aluminum die casting or plastic molding, or may be formed by molding with aluminum powder and firing.
  • FIG. 3 shows a second embodiment of another shaft 26 which can be used in the automotive vane vacuum pump of the present invention
  • FIG. 4 shows a cross section taken along line BB of FIG.
  • This shaft 26 differs from the shaft 21 shown in FIGS. 1 and 2 in that the number of the fin-like projections 23 is three, but the other structure is the same.
  • the shaft 26 can be integrally formed with the shaft body 22 and the fin-like projections 23 by cold forging or sintering.
  • FIG. 5 is a side view showing a third embodiment of the vane type vacuum pump for a vehicle according to the present invention
  • FIG. 6 is a cross-sectional view taken along the line CC of FIG.
  • the shaft 28 includes a shaft main body 29 and two fin-shaped protrusions 30 extending radially outward from the shaft main body 29.
  • the fin-shaped projection 30 is formed by two sheet metal molded products 3 1.
  • the semi-cylindrical portion 3 2 of the sheet metal molded product 3 1 is joined to the shaft body 29 by welding 27.
  • Two fin portions 33 extending in opposite directions in the radial direction of the shaft main body 29 from both ends of the two extend in a superposed manner.
  • the number of the fin-shaped protrusions 30 is arbitrary.
  • FIG. 7 is a side view showing a fourth embodiment of a shaft of the vane type vacuum pump for a vehicle according to the present invention
  • FIG. 8 is a cross-sectional view taken along line DD of FIG.
  • the shaft 34 has an axially extending groove 36 formed on the surface of the shaft body 35 of A ⁇ , and a projection 37 provided therebetween.
  • Such a shaft 34 can be manufactured by cutting, cold forging or sintering. Industrial applicability
  • a cylindrical housing having an inlet and an outlet, and a port eccentrically housed in the housing — this port,
  • a pump that has a shaft that rotates and drives the shaft overnight, and a vane that rotates by sliding against the inner peripheral surface of the housing with the rotation of the mouth, and that pumps fluid from the suction port to the discharge port.
  • Protrusions or grooves are provided on the outer periphery of the shaft, and the shaft and the mouth are integrally fixed, so that the weight can be reduced, abnormal wear of the spline fitting part does not occur, and the processing cost is low.
  • a vane vacuum pump for automobiles is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Pompe à vide à ailettes pour automobiles capable de limiter le poids de ces dernières, d'empêcher l'apparition d'une usure anormale entre les arbres et de diminuer fortement les coûts de fabrication. Cette pompe possède un carter cylindrique comportant des orifices d'aspiration et de décharge, un rotor placé excentrique dans le carter, un arbre servant à entraîner le rotor et des ailettes mises en rotation simultanément à leur contact glissant avec une surface périphérique intérieure du carter sous l'effet de la rotation du rotor, un liquide étant envoyé sous pression depuis l'orifice d'aspiration jusqu'à l'orifice de décharge. Cette pompe est caractérisée par le fait que des saillies ou des évidements sont situés sur ou dans une partie périphérique extérieure de l'arbre, de manière à créer une combinaison fixe de l'arbre et du rotor afin d'obtenir un ensemble solidaire par moulage par insertion, le rotor pouvant être fabriqué par moulage sous pression d'aluminium, moulage de plastique ou cuisson de métal, les saillies ou les évidements situés sur ou dans la partie périphérique extérieure de l'arbre étant fabriqués solidaires de l'arbre pendant le forgeage à froid de l'arbre ou pendant sa fabrication à chaud, ou bien se présentant sous forme de pièces moulées en tôle métallique, fixées à la partie périphérique de l'arbre par soudure, cette pompe à vide permettant au carter et au rotor d'être constitués par le même type de matériau.
PCT/JP1998/005642 1998-12-14 1998-12-14 Pompe a vide a ailettes pour automobiles Ceased WO2000036303A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE69839159T DE69839159T2 (de) 1998-12-14 1998-12-14 Flügelzellen vakuumpumpe für automobile
KR10-2000-7008554A KR100385683B1 (ko) 1998-12-14 1998-12-14 자동차용 베인식 진공펌프
EP98959196A EP1055823B1 (fr) 1998-12-14 1998-12-14 Pompe a vide a ailettes pour automobiles
PCT/JP1998/005642 WO2000036303A1 (fr) 1998-12-14 1998-12-14 Pompe a vide a ailettes pour automobiles
TW087120879A TW414837B (en) 1998-12-14 1998-12-15 Vane type vacuum pump for automobile use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/005642 WO2000036303A1 (fr) 1998-12-14 1998-12-14 Pompe a vide a ailettes pour automobiles

Publications (1)

Publication Number Publication Date
WO2000036303A1 true WO2000036303A1 (fr) 2000-06-22

Family

ID=14209603

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/005642 Ceased WO2000036303A1 (fr) 1998-12-14 1998-12-14 Pompe a vide a ailettes pour automobiles

Country Status (5)

Country Link
EP (1) EP1055823B1 (fr)
KR (1) KR100385683B1 (fr)
DE (1) DE69839159T2 (fr)
TW (1) TW414837B (fr)
WO (1) WO2000036303A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193396A3 (fr) * 2000-10-02 2003-07-30 Mitsubishi Denki Kabushiki Kaisha Pompe à vide à ailettes pour automobiles

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001048381A2 (fr) * 1999-12-23 2001-07-05 Luk Automobiltechnik Gmbh & Co. Kg Pompe a vide
FR2833048B1 (fr) 2001-11-30 2004-01-16 Rene Snyders Machine volumetrique rotative fonctionnant sans frottement dans le volume de travail et supportant des pressions et des temperatures elevees
DE102004034925B3 (de) * 2004-07-09 2006-02-16 Joma-Hydromechanic Gmbh Einflügelvakuumpumpe
DE102004064029B4 (de) * 2004-07-09 2008-04-10 Joma-Hydromechanic Gmbh Einflügelvakuumpumpe
GB2473824B (en) * 2009-09-23 2015-12-23 Edwards Ltd Preventing pump parts joining by corrosion
DE102014107735B4 (de) * 2014-06-02 2018-04-19 Schwäbische Hüttenwerke Automotive GmbH Flügel mit axialer Abdichtung
CN105626533B (zh) * 2015-12-25 2017-12-15 常州市武进广宇花辊机械有限公司 旋片式真空泵
ES3000811T3 (en) * 2018-04-06 2025-03-03 Entecnia Consulting S L U Rotary pump
EP3636944B1 (fr) * 2018-10-09 2023-06-28 Vitesco Technologies GmbH Rotor
KR102522994B1 (ko) * 2021-10-28 2023-04-19 엘지전자 주식회사 로터리 압축기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55135229A (en) * 1979-04-11 1980-10-21 Yunikura:Kk Fixing method of rotor to drive shaft
JPH08326673A (ja) * 1995-06-05 1996-12-10 Aisan Ind Co Ltd ベーンポンプ
JPH0951958A (ja) * 1995-08-14 1997-02-25 Nippon Kikai Kogyo Kk 消防ポンプ呼水用の真空ポンプ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55135229A (en) * 1979-04-11 1980-10-21 Yunikura:Kk Fixing method of rotor to drive shaft
JPH08326673A (ja) * 1995-06-05 1996-12-10 Aisan Ind Co Ltd ベーンポンプ
JPH0951958A (ja) * 1995-08-14 1997-02-25 Nippon Kikai Kogyo Kk 消防ポンプ呼水用の真空ポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1055823A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193396A3 (fr) * 2000-10-02 2003-07-30 Mitsubishi Denki Kabushiki Kaisha Pompe à vide à ailettes pour automobiles

Also Published As

Publication number Publication date
EP1055823A4 (fr) 2004-05-12
KR100385683B1 (ko) 2003-05-27
EP1055823B1 (fr) 2008-02-20
DE69839159T2 (de) 2009-02-26
KR20010040678A (ko) 2001-05-15
DE69839159D1 (de) 2008-04-03
TW414837B (en) 2000-12-11
EP1055823A1 (fr) 2000-11-29

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