EP0283045A2 - Compresseur à volutes - Google Patents

Compresseur à volutes Download PDF

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Publication number
EP0283045A2
EP0283045A2 EP88104390A EP88104390A EP0283045A2 EP 0283045 A2 EP0283045 A2 EP 0283045A2 EP 88104390 A EP88104390 A EP 88104390A EP 88104390 A EP88104390 A EP 88104390A EP 0283045 A2 EP0283045 A2 EP 0283045A2
Authority
EP
European Patent Office
Prior art keywords
block
center block
shell
type compressor
scroll
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
EP88104390A
Other languages
German (de)
English (en)
Other versions
EP0283045B1 (fr
EP0283045A3 (en
Inventor
Shigemi Shimizu
Kazuto Kikuchi
Kiyoshi Terauchi
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.)
Sanden Corp
Original Assignee
Sanden 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
Priority claimed from JP62067354A external-priority patent/JPS63235682A/ja
Priority claimed from JP62067355A external-priority patent/JPS63235683A/ja
Application filed by Sanden Corp filed Critical Sanden Corp
Publication of EP0283045A2 publication Critical patent/EP0283045A2/fr
Publication of EP0283045A3 publication Critical patent/EP0283045A3/en
Application granted granted Critical
Publication of EP0283045B1 publication Critical patent/EP0283045B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • 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
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft

Definitions

  • This invention relates to a scroll type compressor and more particularly, to a motor driven scroll compressor having the compres­sion and drive mechanisms within a hermetically sealed container.
  • Scroll type fluid displacement apparatus are well known in the prior art.
  • U.S. Patent No. 801,182 issued to Creux dis­closes such an apparatus which includes two scrolls, each having a circular end plate and a spiroidal or involute spiral element.
  • the scrolls are maintained angularly and radially offset so that both spiral elements interfit to form a plurality of line contacts between their spiral curved surfaces to thereby seal off and define at least one pair of fluid pockets.
  • the relative orbital motion of the two scrolls shifts the line contacts along the spiral curved surfaces and, as a result, the volume of the fluid pockets increases or decreases, dependent on the direction of the orbital motion.
  • a scroll type fluid displacement apparatus may be used to compress, expand or pump fluids.
  • U.S. Patent No. 4,560,330 discloses such a hermetic type scroll compressor which includes a fixed scroll, orbiting scroll, rotation preventing device and driving mechanism in one sealed container.
  • the essentially insepa­rable container is sealed by welding or other means so that leakage of refrigerant gas from the container is completely prevented.
  • hermetic type scroll compressor prevents leakage of refrigerant gas from the container, this hermetic type scroll compressor can hardly be disassembled and reassembled for inspection, and repair or exchange of parts.
  • a hermetic type scroll compressor includes first and second cup shaped casings and a center block therebetween.
  • a fixed scroll is fixedly disposed in the first cup shaped casing and has a circular end plate from which a first wrap extends.
  • An orbiting scroll has a circular end plate from which a second wrap extends. The first and second wraps interfit at an angular and radial offset to form a plurality of line contacts to define at least one pair of sealed off fluid pockets.
  • a rotation pre­venting device is disposed between the orbiting scroll and the center block which is connected to the first and second cup shaped casings.
  • a driving mechanism having a motor driven drive shaft is disposed in the second cup shaped casing and operatively connects to the orbiting scroll to effect the orbital motion of the orbiting scroll by rotation of a drive shaft while rotation of the orbiting scroll is prevented by a rotation preventing device.
  • the fluid pockets shift along the spiral curved surfaces of the wraps which change the volume of the fluid pockets.
  • the first housing having the first cup shaped casing, fixed scroll, orbiting scroll and rotation preventing device is built on the center block.
  • the second housing having the drive shaft, motor and second cup shaped casing is also built on the center block.
  • the first cup shaped casing and the second cup shaped casing are releasably and hermetically secured to each other through the center block.
  • Figure 1 depicts a hermetic type scroll refrigerant compressor 1 in accordance with a first embodiment of the present invention.
  • Compressor 1 includes first cup shaped casing 10, second cup shaped casing 20 and center block 20 which is attached to first cup shaped casing 10 and second cup shaped casing 20. Opening or bore 31 is formed in the center of center block 30 for receiving drive shaft 11. Radial projection 301 is formed in the inner peripheral surface of opening 31.
  • Drive shaft 11 is rotatably supported in opening 31 by bearing 33.
  • Bearing 33 firmly fits in opening 31.
  • Outer ring 33a of bearing 33 is stopped at a rear end surface of radial projection 301.
  • Nut 34 is screwed on drive shaft 11 and faces one end surface of inner ring 33b of bearing 33.
  • Flange 111 located at one end of drive shaft 11 faces the other end surface of inner ring 33b and bearing 33. Axial motion of drive shaft 11 is thereby prevented by flange 111 and nut 34. Rotor 40a of motor 40 surrounds drive shaft 11. Rotor 40a may be firmly inserted over drive shaft 11.
  • Fixed scroll 50 includes circular end plate 51 and wrap or spiral elements 52 affixed to or extending from one end surface of end plate 51.
  • Fixed scroll 50 is fixed within the inner chamber of first cup shaped casing 10 by screws 11 screwed into end plate 51 from outside of first cup shaped casing 10.
  • Seal ring 11b is located between an inner surface of screw flange 11a and the outer end surface of first cup shaped casing 10 to seal the connection therebetween.
  • Circular end plate 51 of fixed scroll 50 partitions the inner chamber of first cup shaped casing 10 into two chambers, such as front chamber 18 and rear chamber 19.
  • Orbiting scroll 60 is disposed at the rear end side of center block 30 through later mentioned rotation preventing/thrust bearing device 45.
  • Orbiting scroll 60 includes circular end plate 61 and wrap or spiral element 62 affixed to or extending from one end surface of circular end plate 61.
  • Annular projection 16 is formed opposite the surface of circular end plate 61 from which spiral element 62 extends.
  • Bearing 16d is disposed within the inner peripheral wall of the annular projection 16.
  • Bushing 115 is attached to one end of drive shaft 11 at a radial offset through pin member 115b. Bushing 115 is inserted into annular projection 18 of orbiting scroll 60. Orbiting scroll 60 is rotatably sup­ported by bushing 118 through bearing 16d placed on the outer periph­eral surface of bushing 115.
  • Rotating preventing/thrust bearing device 45 is placed between the rear end surface of center block 30 and the end surface of circu­lar end plate 61.
  • Rotation preventing/thrust bearing device 48 includes fixed ring 451 attached on the axial end surface of annular projection 302 which is formed in the rear end surface of center block 30, orbiting ring 452 attached on the end surface of circular end plate 61, and a plurality of bearing elements, such as balls 453, placed between pockets 451a, 452a formed by rings 451, 452.
  • the rotation of orbiting scroll 60 during orbital motion is prevented by the interaction of balls 453 with rings 451, 452.
  • the axial thrust load from orbiting scroll 60 is supported on center block 30 through balls 453. While orbiting scroll 60 orbits, the rotation of orbiting scroll 60 is prevented by rotation preventing/thrust bearing device 45.
  • spiral element 62 of orbiting scroll 60 interfits spiral element 52 of fixed scroll 50 at an annular offset of 180° and at a predetermined radial offset.
  • Spiral elements 62 and 52 define at least one pair of sealed off fluid pockets between their interfitting surfaces.
  • Radial projection 303 formed in the outer peripheral surface of center block 30 is fixed to the axial end surface of first cup shaped casing 10 by screws 12.
  • Seal ring 12a is disposed within circumferen­tial groove 12b of annular projection 302 to form a seal between the inner wall of first cup shaped casing 10 and the outer peripheral sur­face of annular projection 302.
  • stator 40b is held firmly between center block 30 and rear bearing unit 70.
  • the inner peripheral surface of stator 40b and the outer peripheral surface of rotor 40a face each other.
  • Rear bearing unit 70 and motor 40 are covered by second cup shaped casing 20.
  • Flange 21a formed at opening end 21 of second cup shaped casing 20 is fixed to radial projection 303 of center block 30 by screws 14.
  • Seal ring 14a is disposed within a circular groove 14b of flange 21a to form a seal between the front end surface of radial pro­jection 303 and an axial end surface of flange 21a.
  • Terminals 412a are connected to an external electrical source (not shown) through a switch (also not shown).
  • Hermetic seal base 412 is insulated from terminals 412a and fixed to projection 413 which is formed on side surface of second cup shaped casing 20 by screws 414. Seal ring 414a is disposed within a circular groove 414b of projection 413 to form a seal between the rear end surface of hermetic seal base 412 and the axial end surface of projection 413.
  • the refrigerant gas in the front chamber is taken into the sealed fluid pockets between the fixed scroll and orbiting scroll, then moves toward the center of the spiral wraps during the orbital motion of the orbiting scroll with a resultant volume reduction and compression, and is discharged to rear chamber 19 as through hole 56 and one-way valve 56c. Discharged gas in the rear chamber then flows to an external fluid circuit (not shown) through outlet port 10c.
  • hermetic type scroll refrigerant com­pressor 1 is shown in accordance with another embodiment of the present invention.
  • the same construction is accorded like numerals as that shown in Figure 1.
  • the description of that constructions is substantially omitted to simplify the description herein.
  • Orbiting scroll 60 interfits fixed scroll 50.
  • Annular projection 16 is formed opposite the surface of circular end plate 61 from which spiral element 62 is extended.
  • Bearing 16d is disposed within the inner peripheral wall of the annular projection 16.
  • a first center block 310 having central opening or bore 311 is disposed adjacent to rotation preventing/thrust bearing device 45.
  • the first center block 310 is releasably and hermetically secured fixed to an axial end sur­face of first cup shaped casing 10 by screws 12.
  • Seal ring 12a is dis­posed within a circumferential groove 12b of annular projection 312 formed at the rear end surface of the center block 310 to form a seal between the inner wall of the first cup shaped casing 10 and the outer peripheral surface of annular projection 312.
  • a first housing 100 includes the first center block 310 and the first cup shaped casing 10 having fixed scroll 50, orbiting scroll 60 and rotation preventing/thrust bearing device 45 therein.
  • Compression mechanism section 110 comprises a first center block 310 and the construction to the right thereof as shown in Figure 2.
  • Second center block 320 rotatably supports drive shaft 11 in center block central opening or bore 321 through bearing 33.
  • One end of drive shaft 11 is rotatably supported by rear bearing unit 70 through bearing 71.
  • Stator 40b of motor 40 is held between the sec­ond center block 320 and rear bearing unit 70.
  • Rear bearing unit 70 is releasably secured to the second center block 320 by screws 13.
  • driving mechanism section 120 is to the left of first center block 310 as shown in Figure 2.
  • the second center block 320 is positioned firmly within second cup shaped casing 20 and against ridge 323 formed in the inner wall of the second cup shaped casing 20.
  • a second housing 200 includes the driving mechanism section 120 and the second cup shaped casing 20.
  • Bushing 115 is attached to one end of drive shaft 11 at a radial offset through pin member 115b.
  • first housing 100 and the second housing 200 are fitted together so that bushing 115 is inserted into annular projection 16 of circular end plate 61.
  • Drive shaft 11 is attached to orbiting scroll at a radial offset.
  • Flange 21a formed at opening end 21 of second cup shaped casing 20 is releasably and hermetically secured to radial pro­jection 313 of first center block 310 by screws 14 and seal ring 14a.
  • Seal ring 14a is disposed within a circular groove 14b of flange 21a to form a seal between the front end surface of radial projection 313 and the axial end surface of flange 21a.
  • Annular projection 322 and the recess defined by projection 312 form an alignment mechanism for aligning drive shaft 11 with the orbiting scroll when first housing 100 and second housing 200 engage first center block 310.
  • hermetically sealed compressor housing 400 is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP88104390A 1987-03-20 1988-03-18 Compresseur à volutes Expired - Lifetime EP0283045B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP67355/87 1987-03-20
JP62067354A JPS63235682A (ja) 1987-03-20 1987-03-20 スクロ−ル型流体装置
JP67354/87 1987-03-20
JP62067355A JPS63235683A (ja) 1987-03-20 1987-03-20 スクロ−ル型流体装置

Publications (3)

Publication Number Publication Date
EP0283045A2 true EP0283045A2 (fr) 1988-09-21
EP0283045A3 EP0283045A3 (en) 1989-06-14
EP0283045B1 EP0283045B1 (fr) 1991-07-24

Family

ID=26408551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104390A Expired - Lifetime EP0283045B1 (fr) 1987-03-20 1988-03-18 Compresseur à volutes

Country Status (6)

Country Link
EP (1) EP0283045B1 (fr)
KR (1) KR960014085B1 (fr)
CN (1) CN1011811B (fr)
AU (1) AU607745B2 (fr)
CA (1) CA1305688C (fr)
DE (1) DE3863799D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324645A2 (fr) * 1988-01-14 1989-07-19 Sanden Corporation Compresseur à volutes hermétique
EP0538804A1 (fr) * 1991-10-24 1993-04-28 Sanden Corporation Procédé d'assemblage d'un moteur-compresseur à fluide
EP0538892A1 (fr) * 1991-10-24 1993-04-28 Sanden Corporation Moteur-compresseur à fluide
CN1071416C (zh) * 1994-11-17 2001-09-19 三菱重工业株式会社 涡旋式压缩机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6350111B1 (en) * 2000-08-15 2002-02-26 Copeland Corporation Scroll machine with ported orbiting scroll member
JP5592838B2 (ja) 2011-06-13 2014-09-17 サンデン株式会社 流体機械
CN102330679B (zh) * 2011-09-16 2013-08-14 大连三洋压缩机有限公司 一种可拆卸式涡旋压缩机
WO2014155546A1 (fr) * 2013-03-27 2014-10-02 日立アプライアンス株式会社 Compresseur à spirales
US11656003B2 (en) 2019-03-11 2023-05-23 Emerson Climate Technologies, Inc. Climate-control system having valve assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331878A (en) * 1939-05-25 1943-10-19 Wentworth And Hull Vane pump
US3311293A (en) * 1965-08-06 1967-03-28 Gast Mfg Corp Integral vacuum pump and air compressor
US4065279A (en) * 1976-09-13 1977-12-27 Arthur D. Little, Inc. Scroll-type apparatus with hydrodynamic thrust bearing
FR2559847A1 (fr) * 1984-02-21 1985-08-23 Trane Co Machine a volutes pour comprimer un fluide

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314796A (en) * 1978-09-04 1982-02-09 Sankyo Electric Company Limited Scroll-type compressor with thrust bearing lubricating and bypass means
JPS55109793A (en) * 1979-02-17 1980-08-23 Sanden Corp Displacement type fluid compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331878A (en) * 1939-05-25 1943-10-19 Wentworth And Hull Vane pump
US3311293A (en) * 1965-08-06 1967-03-28 Gast Mfg Corp Integral vacuum pump and air compressor
US4065279A (en) * 1976-09-13 1977-12-27 Arthur D. Little, Inc. Scroll-type apparatus with hydrodynamic thrust bearing
FR2559847A1 (fr) * 1984-02-21 1985-08-23 Trane Co Machine a volutes pour comprimer un fluide

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324645A2 (fr) * 1988-01-14 1989-07-19 Sanden Corporation Compresseur à volutes hermétique
EP0324645A3 (en) * 1988-01-14 1990-03-28 Sanden Corporation Hermetic scroll type compressor
EP0538804A1 (fr) * 1991-10-24 1993-04-28 Sanden Corporation Procédé d'assemblage d'un moteur-compresseur à fluide
EP0538892A1 (fr) * 1991-10-24 1993-04-28 Sanden Corporation Moteur-compresseur à fluide
CN1071416C (zh) * 1994-11-17 2001-09-19 三菱重工业株式会社 涡旋式压缩机

Also Published As

Publication number Publication date
KR880011473A (ko) 1988-10-28
CN1011811B (zh) 1991-02-27
CN88102057A (zh) 1988-10-05
CA1305688C (fr) 1992-07-28
EP0283045B1 (fr) 1991-07-24
AU1325888A (en) 1988-09-22
EP0283045A3 (en) 1989-06-14
DE3863799D1 (de) 1991-08-29
KR960014085B1 (ko) 1996-10-12
AU607745B2 (en) 1991-03-14

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