US3834846A - Rotor supporting arrangement for a compressor - Google Patents

Rotor supporting arrangement for a compressor Download PDF

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Publication number
US3834846A
US3834846A US00359560A US35956073A US3834846A US 3834846 A US3834846 A US 3834846A US 00359560 A US00359560 A US 00359560A US 35956073 A US35956073 A US 35956073A US 3834846 A US3834846 A US 3834846A
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US
United States
Prior art keywords
pintle
side wall
rotor
arrangement
wall means
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.)
Expired - Lifetime
Application number
US00359560A
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English (en)
Inventor
E Linder
G Adalbert
J Hess
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
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Publication of US3834846A publication Critical patent/US3834846A/en
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
    • 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
    • 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

Definitions

  • a stationary pintle projects from one side of a housing into a housing cavity, and has two axially spaced bearing supporting a rotor which has a pot-shaped portion including an endless wall surrounding the pintle and closed by a bottom part to which a drive shaft portion of the rotor is secured.
  • the bearings are either provided between the endless wall and the outer surface of the pintle, or between the drive shaft portion and the inner surface of a tubular pintle.
  • the center of gravity of the rotor is located between the bearings.
  • the present invention relates to an improvement in compressors, particularly a compressor of the type in which vanes are slidable in substantial radial slots of a rotor and have outer ends engaging an endless cam surface so that expanding and contracting intervane soac'es are formed.
  • The.U.S. Pat. No. 2,046,873 discloses a machine of this type in which the rotor is supported on a pintle on one side of its housing so that a comparatively long bearing is required for the rotor. causing large size of the machine.
  • the machine of the prior art which operates satisfactorily as a pump when low sealing requirements are made, but cannot be used as a compressor without great disadvantages. In a vane compressor, the tolerances between the rotor and the inner surface of the housing must be exactly observed, and during operation of the compressor, the adjusted play must not change, since otherwise the efficiency of the compressor is unduly reduced.
  • the machine of the prior art is of the one flow type which causes a one-sided load on the bearings.
  • Another object of the invention is to support the rotor of a compressor on two axially spaced bearings on a supporting pintle or trunnion which is located only on one side of the rotor and housing.
  • the rotor of the compressor is mounted on two bearings on a pintle which at least partly projects into an inner housing cavity, and which supports by the two bearings, a potshaped rotor portion whose endless wall surrounds the pintle, and whose bottom part is secured to, or integral with, a drive shaft portion of the rotor which projects on one side of the rotor out of the housing.
  • the arrangement of the invention has the advantage that the rotor is mounted on a pintle on one side of the housing, but is supported on two axially spaced bearings. Due to the one-sided support, easy adjustability of the gap between the rotor and the inner endless housing surface is obtained, and on the other hand, the bearing support is capable of withstanding even very high loads.
  • FIG. 1 is an axial sectional view illustrating a first embodiment of the invention
  • FIG. 2 is a cross sectional view of the embodiment of FIG. 1;
  • FIG. 3 is an axial sectional view of a second embodiment.
  • a vane compressor has a housing with five parts.
  • An annular central housing part 1 forms together with two. side walls 2 and 4 an inner cavity.
  • the side walls 2 and 4 are covered by outer covers 3 and 5 which are held together by threaded bolts 28 and nuts 30.
  • the annular central housing wall 1 is double-walled and includes an outer wall 6a and an inner wall 6 connected by ribs 6b in such a manner that chambers are formed between the inner wall 6 and the outer wall 6a.
  • the inner endless wall 6 has an inner endless cam ming surface 60 of elipsoid shape which is the outer boundary of the housing cavity 7..
  • a rotor t8 isarranged in cavity 7, and has a diameter which, with small play, has a length corresponding to the length of the small axis of the elipsoid inner camming surface 6c.
  • two crescent working spaces are'formed which are divided into suction chambers 7a and pressure chambers 7b by radial vanes 11 mounted in radial slots formed by inner ribs 10 of the rotor 8. As best seen in FIG.
  • rotor 8 has a potshaped portion including an endless wall 8a and a bottom 12.
  • the rotor has a drive shaft portion 13 which is secured to the bottom part 12 of the pot-shaped portion 8.
  • the endless wall 8a surrounds a tubular pintle 14 mounted on side wall 2 and having a portion projecting into the cavity 7, and an axially outer portion projecting into the space between the cover 3 and side wall 2.
  • the drive shaft portion 13 of the rotor passes through the inner bore of tubular pintle 1.4, and is supported in two axially spaced bearings 15 and 16 mounted in the inner bore of pintle 14 at the ends of the pintle.
  • the radial outer ends of the vanes 11 slidingly engage the inner elipsoid camming surface 6c and divide the crescent-shaped spaces between the rotor and the camming surface 60, into expanding suction chambers 7a and pressure chambers 7b.
  • the region of the suction chambers is connected by openings 17 in the inner wall 6 with suction chambers 18 formed between the inner wall6 and the outer wall 6a of the central housing portion 1.
  • the pressure chambers 7b communicate with pressure chambers 21 between housing walls I and 6 through outlets 19.
  • Check valve means 20 including springs 32 and abutment members '33 close the outlet 19, but are opened by pressurefluid entering the chamber 21 through outlets l9.
  • Part-cylindrical springs 34 urge a base plate 35 of the check valve means 31 against the outside of the inner wall 6.
  • the check valve arrangement is not an object of the present invention.
  • the side wall 4 and the cover wall 5 close the inner cavity within the endless wall 6.
  • the cover 5 forms an annular channel 22 which interconnects the pressure chambers 21 in the central housing part 1 with the outlet 23.
  • An annular channel 25 between the cover 3 and the side wall 2 connects the suction chambers 18 with the inlet 26.
  • a bore in cover 3 through which the drive shaft portion 13 of rotor 8 passes, is sealed by an axial sealing means 27.
  • the rotor 8 Due to the construction of the compressor permitting two flows of the fluid, the rotor 8 is completely relieved of fluid pressure, so that the rotor can be mounted on the one-sided pintle 14.
  • the one-sided support of the rotor permits easy adjustment of the play between the outer surface of the rotor and the inner surface 60 of planar wall 6.
  • the pivot pin 24, secured to the central housing portion 1, supports the pintle 14 for angular adjusting movement with rotor 8 relative to the inner surface 6c. It is particularly advantageous for the load on bearings 15 and 16 if the center of gravity of the rotor is located between the bearings 15 and 16 and preferably if a vertical line from the center of gravity passes through the axis of the rotor shaft 13 and of the bearings 15 and 16.
  • FIG. 1 permits the mounting of the rotor 8, and more particularly of its drive shaft portion 13, on two axially spaced bearings 15 and 16 supported on the side wall 2 by pintle 16, without requiring one of the bearings to be located outside of the other side wall 4.
  • FIG. 3 shows another embodiment of the invention whose general construction is similar to the construction of the embodiment of FIGS. 1 and 2, but the rotor is differently constructed.
  • the housing consists of five parts, a central housing portion 41, two side walls 42 and 44, and two covers 43 and 45.
  • a pintle 54 is supported on the side wall 42 projecting into the cavity 7 formed by the inner endless camming surface 47.
  • the free end of the pintle 54 is spaced from the side wall 42, and the rotor 48 has a pot-shaped portion with an endless wall 48 surrounding pintle 54 and the bottom part 48b located adjacent side wall 42.
  • the bottom part 48b is integral with the drive shaft portion 53 which is mounted in the cover wall 43, sealed by sealing means 67.
  • the endless wall of the potshaped rotor portion 48 surrounds the pintle 54,and
  • the embodiment of FIG. 3 has the advantage that the drive shaft portion 53 isshort.
  • the drive shaft portion 13, which passes through the interior of the pot-shaped rotor portion, is much longer so that resonance oscillations are possible which are avoided by the embodiment of FIG. 3.
  • the bottom part 12 or 48b of the pot-shaped rotor portion is located between the free end of pintle 14 or 54 and the respective side wall 4 or 44.
  • the arrangement of the present invention comprises housing means including first and second side wall means 2, 3, 4, 5 or 42, 43, 44, 45 and forming a cavity 7; a stationary supporting pintle 14 or 54 secured at one end to one of said side wall means and projecting therefrom into said cavity, the other end of said pintle being spaced from the respective other side wall means; rotor means 8 or 48 having an axis and located in said cavity 7, said rotor means including a pot-shaped portion having an endless wall or 48c surrounding said pintle 14 or 54, and a bottom part 12 or 48a located between said other end of said pintle and said other side wall means, said rotor means 8 or 48 further including a drive shaft portion 13 or 53 projecting from said bottom part 12 or 48a through said first side wall means 2, 3 or 42, 43 out of said cavity; and two bearings 15, 16 or 55, 56 located spaced along the length of said pintle 14 or 54 and supporting said rotor means on said pintle for rotation about said axis.
  • Rotor supporting arrangement for a compressor comprising housing means including first and second side wall means, and forming a cavity; a stationary supporting pintle projecting from one of said side wall means into said cavity and having a free end spaced from the respective other side wall means; rotor means having an axis, and located in said cavity, said rotor means including a pot-shaped portion having an endless wall surrounding said pintle, and a bottom part located between said free end of said pintle and said other side wall means, said rotor means further including a drive shaft portion projecting from said bottom part through said first side wall means out of said cavity; and two bearings mounted on said pintle spaced from each other and supporting said drive shaft on said pintle for rotation about said axis.
  • said one side wall means include an outer cover, and a planar end wall bounding one axial end of said cavity and supporting said pintle.
  • said housing means includes a central annular housing part on which said first and second side wall means abut, and a pivot pin secured to said annular central housing part and mounting said end wall for angular adjustment with said pintle.
  • said one side wall means is said first side wall means and said other side wall means is said second side wall means; wherein said pintle is tubular and has an inner cylindrical bore; wherein said bearings are mounted in said cylindrical bore; and wherein said drive shaft portion is located in said cylindrical bore supported on said bearings and passes through said endless wall of said pot-shaped part, said drive shaft portion being secured to said bottom part so that said pot-shaped portion of said rotor means is supported by said drive shaft portion on said tubular pintle.
  • tubular pintle includes a tubular portion projecting axially outward from said first side wall means; and wherein one of said bearing is located in said tubular portion.
  • said one side wall means is said second side wall means; wherein said bottom part is located adjacent said first side wall means; wherein said drive shaft portion is secured to the outside of said bottom part and projects out of said cavity through said first side wall means;.and wherein said bearings are located between the outer surface of said pintle and the inner surface of said endless wall of said pot-shaped portion of said rotor means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US00359560A 1972-05-12 1973-05-11 Rotor supporting arrangement for a compressor Expired - Lifetime US3834846A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2223087A DE2223087C2 (de) 1972-05-12 1972-05-12 Flügelzellenverdichter

Publications (1)

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US3834846A true US3834846A (en) 1974-09-10

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US00359560A Expired - Lifetime US3834846A (en) 1972-05-12 1973-05-11 Rotor supporting arrangement for a compressor

Country Status (4)

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US (1) US3834846A (zh)
JP (1) JPS5736433B2 (zh)
DE (1) DE2223087C2 (zh)
IT (1) IT972608B (zh)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265603A (en) * 1978-04-28 1981-05-05 Diesel Kiki Co., Ltd. Refrigerant compressor for air conditioning of vehicles
US4395203A (en) * 1980-03-29 1983-07-26 Diesel Kiki Co., Ltd. Vane compressor having a discharge rate control
US4494917A (en) * 1980-09-12 1985-01-22 Seiko Seiki Kabushiki Kaisha Bearing structure for an air compressor
US4505653A (en) * 1983-05-27 1985-03-19 Borg-Warner Corporation Capacity control for rotary vane compressor
US4545747A (en) * 1982-12-17 1985-10-08 Hitachi, Ltd. Scroll-type compressor
US4711620A (en) * 1984-05-28 1987-12-08 Hitachi, Ltd. Moving vane type compressor
US4755115A (en) * 1984-11-21 1988-07-05 Atsugi Motor Parts Company, Limited Shaft seal assembly for compressor
US5201878A (en) * 1990-10-11 1993-04-13 Toyoda Koki Kabushiki Kaisha Vane pump with pressure chambers at the outlet to reduce noise
US5496160A (en) * 1995-07-03 1996-03-05 Tecumseh Products Company Scroll compressor having a suction check valve
US5642991A (en) * 1996-03-11 1997-07-01 Procon Products Sliding vane pump with plastic housing
US5924856A (en) * 1995-12-08 1999-07-20 Zexel Corporation Vane compressor having a movable pressure plate and a unitary front head and cam ring
US6050796A (en) * 1998-05-18 2000-04-18 General Motors Corporation Vane pump
US6095777A (en) * 1997-07-22 2000-08-01 Matsushita Electric Industrial Co., Ltd. Hermetic compressor having an inlet port and/or an outlet port with a sealed connecting member
US6227816B1 (en) * 1998-06-24 2001-05-08 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Hydraulic delivery device
EP1365153A1 (en) * 2002-05-24 2003-11-26 Seiko Instruments Inc. Gas compressor
US6666670B1 (en) 2003-05-22 2003-12-23 Visteon Global Technologies, Inc. Power steering pump
US20090104049A1 (en) * 2007-10-18 2009-04-23 Jie Jang Sliding Vane Pump
CN101709700B (zh) * 2009-11-12 2012-02-01 浙江万安科技股份有限公司 一种汽车用湿式旋片电动真空泵
US20120034125A1 (en) * 2009-04-21 2012-02-09 Slw Automotive Inc. Vane pump with improved rotor and vane extension ring

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53130511A (en) * 1977-04-19 1978-11-14 Matsushita Electric Ind Co Ltd Refrigerant compressor
JPS5735652Y2 (zh) * 1978-11-27 1982-08-06
JPS55139285U (zh) * 1979-03-24 1980-10-04
JPS57392A (en) * 1980-05-31 1982-01-05 Diesel Kiki Co Ltd Vane type compressor
JPS6316879Y2 (zh) * 1980-06-09 1988-05-13
JPS575984U (zh) * 1980-06-10 1982-01-12
JPS575985U (zh) * 1980-06-10 1982-01-12
JPS6346709Y2 (zh) * 1980-06-10 1988-12-02
DE3119230C2 (de) * 1981-05-14 1985-02-28 Volkswagenwerk Ag, 3180 Wolfsburg Motorgetriebene Flügelzellen-Pumpe
DE19927247B4 (de) * 1998-06-24 2014-07-17 Ixetic Bad Homburg Gmbh Hydraulische Fördereinrichtung und Verfahren zur Montage einer hydraulischen Fördereinrichtung

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US2046873A (en) * 1934-11-28 1936-07-07 Harry A Garrison Rotary pump
US2702509A (en) * 1951-04-06 1955-02-22 Air Equipment Rotary pump
US2857150A (en) * 1953-06-19 1958-10-21 Shell Dev Centrifugal pump for control systems and method of establishing a fluid pressure
US2861517A (en) * 1952-07-26 1958-11-25 American Brake Shoe Co Vane pump
US3276388A (en) * 1964-12-07 1966-10-04 Schimkat Gerhard Franz Rotary piston pump
US3728046A (en) * 1971-10-06 1973-04-17 Trw Inc Power steering pump

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US3079864A (en) * 1963-03-05 Pressure intensifier
DE971505C (de) * 1953-10-27 1959-02-05 Svenska Rotor Maskiner Ab Drehkolbenmaschine zur Kompression oder Expansion von Gasen
US2902943A (en) * 1955-10-05 1959-09-08 Superior Industries Rotary low pressure gas pump and method of operating the same
US2984186A (en) * 1957-07-11 1961-05-16 Thompson Ramo Wooldridge Inc Multiple pump unit
DE1163679B (de) * 1959-05-14 1964-02-20 Teves Kg Alfred Hydrostatische Drehkolbenmaschine
FR1289301A (fr) * 1961-05-17 1962-03-30 Dewandre Co Ltd C Exhausteur, ventilateur soufflant ou compresseur à rotor excentré utilisable notamment dans les systèmes de freinage des véhicules automobiles
US3286913A (en) * 1964-07-13 1966-11-22 Randolph Mfg Co Rotary pump
US3346176A (en) * 1965-10-11 1967-10-10 Gen Motors Corp Rotary mechanism including abradable lubricating and sealing means
DE1955900U (de) * 1965-12-18 1967-02-16 Giuseppe Scalmana Hydraulischer fluegelzellenmotor.
US3434655A (en) * 1967-10-23 1969-03-25 Worthington Corp Rotary compressor
DE1922630A1 (de) * 1969-05-03 1970-11-05 Karl Widenmann Armaturenfabrik OElmengenanzeiger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046873A (en) * 1934-11-28 1936-07-07 Harry A Garrison Rotary pump
US2702509A (en) * 1951-04-06 1955-02-22 Air Equipment Rotary pump
US2861517A (en) * 1952-07-26 1958-11-25 American Brake Shoe Co Vane pump
US2857150A (en) * 1953-06-19 1958-10-21 Shell Dev Centrifugal pump for control systems and method of establishing a fluid pressure
US3276388A (en) * 1964-12-07 1966-10-04 Schimkat Gerhard Franz Rotary piston pump
US3728046A (en) * 1971-10-06 1973-04-17 Trw Inc Power steering pump

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265603A (en) * 1978-04-28 1981-05-05 Diesel Kiki Co., Ltd. Refrigerant compressor for air conditioning of vehicles
US4395203A (en) * 1980-03-29 1983-07-26 Diesel Kiki Co., Ltd. Vane compressor having a discharge rate control
US4494917A (en) * 1980-09-12 1985-01-22 Seiko Seiki Kabushiki Kaisha Bearing structure for an air compressor
US4545747A (en) * 1982-12-17 1985-10-08 Hitachi, Ltd. Scroll-type compressor
US4505653A (en) * 1983-05-27 1985-03-19 Borg-Warner Corporation Capacity control for rotary vane compressor
US4711620A (en) * 1984-05-28 1987-12-08 Hitachi, Ltd. Moving vane type compressor
US4755115A (en) * 1984-11-21 1988-07-05 Atsugi Motor Parts Company, Limited Shaft seal assembly for compressor
US5201878A (en) * 1990-10-11 1993-04-13 Toyoda Koki Kabushiki Kaisha Vane pump with pressure chambers at the outlet to reduce noise
US5496160A (en) * 1995-07-03 1996-03-05 Tecumseh Products Company Scroll compressor having a suction check valve
US5924856A (en) * 1995-12-08 1999-07-20 Zexel Corporation Vane compressor having a movable pressure plate and a unitary front head and cam ring
US5642991A (en) * 1996-03-11 1997-07-01 Procon Products Sliding vane pump with plastic housing
US6095777A (en) * 1997-07-22 2000-08-01 Matsushita Electric Industrial Co., Ltd. Hermetic compressor having an inlet port and/or an outlet port with a sealed connecting member
US6050796A (en) * 1998-05-18 2000-04-18 General Motors Corporation Vane pump
US6227816B1 (en) * 1998-06-24 2001-05-08 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Hydraulic delivery device
GB2340889B (en) * 1998-06-24 2003-04-23 Luk Fahrzeug Hydraulik Hydraulic delivery service
EP1365153A1 (en) * 2002-05-24 2003-11-26 Seiko Instruments Inc. Gas compressor
US6935854B2 (en) 2002-05-24 2005-08-30 Calsonic Compressors Manufacturing Inc. Gas compressor
CN100385121C (zh) * 2002-05-24 2008-04-30 康奈可压缩机株式会社 气体压缩机
US6666670B1 (en) 2003-05-22 2003-12-23 Visteon Global Technologies, Inc. Power steering pump
US20090104049A1 (en) * 2007-10-18 2009-04-23 Jie Jang Sliding Vane Pump
US8419384B2 (en) * 2007-10-18 2013-04-16 Standex International Corporation Sliding vane pump
US20120034125A1 (en) * 2009-04-21 2012-02-09 Slw Automotive Inc. Vane pump with improved rotor and vane extension ring
US8672658B2 (en) * 2009-04-21 2014-03-18 Slw Automotive Inc. Vane pump with improved rotor and vane extension ring
CN101709700B (zh) * 2009-11-12 2012-02-01 浙江万安科技股份有限公司 一种汽车用湿式旋片电动真空泵

Also Published As

Publication number Publication date
JPS5736433B2 (zh) 1982-08-04
DE2223087A1 (de) 1973-12-13
DE2223087C2 (de) 1985-06-05
JPS4949206A (zh) 1974-05-13
IT972608B (it) 1974-05-31

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