EP0124114A2 - Verdichter mit ineinandergreifenden Spiralelementen - Google Patents

Verdichter mit ineinandergreifenden Spiralelementen Download PDF

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Publication number
EP0124114A2
EP0124114A2 EP84104786A EP84104786A EP0124114A2 EP 0124114 A2 EP0124114 A2 EP 0124114A2 EP 84104786 A EP84104786 A EP 84104786A EP 84104786 A EP84104786 A EP 84104786A EP 0124114 A2 EP0124114 A2 EP 0124114A2
Authority
EP
European Patent Office
Prior art keywords
compressor
tip seal
scroll
pressure side
scrolls
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
EP84104786A
Other languages
English (en)
French (fr)
Other versions
EP0124114B1 (de
EP0124114A3 (en
Inventor
Etsuo C/O Mitsubishi Denki K.K. Morishita
Tsutomu C/O Mitsubishi Denki K.K. Inaba
Toshiyuki C/O Mitsubishi Denki K.K. Nakamura
Tadashi C/O Mitsubishi Denki K.K. Kimura
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
Priority claimed from JP7671883A external-priority patent/JPS59201989A/ja
Priority claimed from JP7671683A external-priority patent/JPS59201987A/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP0124114A2 publication Critical patent/EP0124114A2/de
Publication of EP0124114A3 publication Critical patent/EP0124114A3/en
Application granted granted Critical
Publication of EP0124114B1 publication Critical patent/EP0124114B1/de
Expired 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid

Definitions

  • the present invention relates to a scroll-type compressor.
  • Figs. lA to 1D illustrate the operating principles of a scroll-type compressor.
  • a stationary scroll 1 having the shape of a spiral extending a predetermined distance in the lengthwise direction, is stationarily mounted.
  • the term "spiral" as used herein refers to an involute of a circle, an arc of a circle, or the like.
  • An orbiting scroll 2, which may be the complement in configuration of the scroll 1, is interleaved with the stationary scroll 1.
  • the scroll 2 is made to orbit with respect to the stationary scroll 1, that is, to move in a circle without changing its angular orientation relative to the stationary scroll 1, by a suitable drive mechanism (not shown). Relative positions of the scrolls 1 and 2 at 0°, 90°, 180° and 270° of the 360° cycle of the orbiting scroll 2 are shown in Figs. lA to 1D, respectively.
  • a plurality of compression chambers 4 are formed between the scrolls 1 and 2. Each of the compression chambers is moved inwardly with the- volume - thereof being continuously reduced when the orbiting scroll 2 orbits with respect to the stationary scroll 1. The contents of the innermost compression chamber, which is at the highest pressure, is discharged through a discharge port 3.
  • the distance between the center e of the stationary scroll 1 and an innermost fixed point ⁇ ' on the orbiting scroll 2, that is, the crank radius of the orbiting scroll 2, is maintained constant during the orbital movement thereof, and can be represented by: where P is the distance between adjacent surfaces of the scrolls (which corresponds to the pitch thereof) and t is the thickness of the scrolls.
  • U.S. Patent 3,994,636 discloses the use of a tip seal element at the edge of the spiral arm of each scroll. Such a seal element is illustrated schematically in Figs. 2 and 3.
  • Fig. 2 which illustrates the relationship of the tip seal element 6 to the scrolls, here, the orbiting scroll
  • the tip seal element 6 is disposed in a tip seal groove 5 formed in the top edge of the scroll.
  • the tip seal element 6, which is prepared by curling a rectangular rod of a rigid abrasion-resistant material, functions to seal the axial gap between end plate 11 of the stationary scroll 1 and the edge of the orbiting scroll 2 and the axial gap between the end plate 12 of the orbiting scroll 2 and the edge of the stationary scroll 1.
  • Backup springs 7 function to push the - tip seal elements 6 against the end plates to seal the scrolls thereagainst.
  • the backup springs 7 are necessary to provide sufficient sealing by the tip seal elements 6.
  • the use of such springs is cumbersome, they are difficult to assemble, and relatively deep grooves must be formed in the ends of the scrolls to receive such springs. Further, since leakage of pressurized fluid from the high pressure side ray still occur through the walls of the grooves to the low pressure side, the secondary sealing effect is insufficient.
  • An object of the present invention is to provide a scroll-type compressor which does not suffer the disadvantages inherent to the conventional scroll-type compressor having solid tip seal elements.
  • a scroll-tpye compressor comprising a stationary scroll having one end attached to a first end plate; and orbiting scroll interleaved with said stationary scroll and having one end attached to a second end plate, each of said scrolls having formed in an end surface thereof opposite said one ends a tip seal groove extending along the scroll.
  • edge portions of the scrolls of the scroll-type compressor tip seal elements are provided which are made of an elastic material and which are capable of being inflated by a pressure on the high pressure side of the compression chamber of the compressor to seal the axial gaps between the stationary scroll and the orbiting scroll.
  • the tip seal element invention may take the form of either an elastic hollow tube having one end closed and which is fitted in the tip seal groove, or a resilient strip covering the groove except for an innermost end thereof, with the open end of the hollow tube or the open end of the groove being in fluid communication with the high pressure side of the compression chamber so that it is inflated by the pressure of the high pressure side.
  • a tip seal element 9 of a first embodiment of the invention takes the form of a hollow tube having a center hole 15.
  • the cross section of the tip seal element 9 is circular as shown in Fig. 4B.
  • the tip seal element 9 is formed by curling a straight hollow tube as shown in Fig. 4C so that it can be received in the tip seal grooves 5 formed in the edge of the scrolls 1 and 2.
  • Tip seal elements 9 are fitted in the tip seal grooves 5 with the open ends 13 thereof at the innermost ends of the tip seal grooves 5 such that the open ends 13 communicate with the high pressure side of the compression chamber formed between the scroll 1 and 2.
  • Fig. 5 shows in cross section tip seal elements 9 fitted in the respective tip seal grooves 5.
  • each tipo seal element 9 Since the open end 13 of each tipo seal element 9 communicates with the high pressure side of the compression chamber when the compressor is in operation, the interior 15 of the tip seal element 9 is at a higher pressure than the exterior thereof, and hence the tip seal element 9 is inflated to seal the axial gap between the edge of the scrolls and the adjacent end plates as shown in Fig. 6. The higher the pressure in the discharge chamber the larger will be the sealing effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP84104786A 1983-04-29 1984-04-27 Verdichter mit ineinandergreifenden Spiralelementen Expired EP0124114B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP76718/83 1983-04-29
JP7671883A JPS59201989A (ja) 1983-04-29 1983-04-29 スクロ−ル圧縮機
JP76716/83 1983-04-29
JP7671683A JPS59201987A (ja) 1983-04-29 1983-04-29 スクロ−ル圧縮機

Publications (3)

Publication Number Publication Date
EP0124114A2 true EP0124114A2 (de) 1984-11-07
EP0124114A3 EP0124114A3 (en) 1985-01-09
EP0124114B1 EP0124114B1 (de) 1988-08-10

Family

ID=26417853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104786A Expired EP0124114B1 (de) 1983-04-29 1984-04-27 Verdichter mit ineinandergreifenden Spiralelementen

Country Status (3)

Country Link
EP (1) EP0124114B1 (de)
KR (1) KR860001681Y1 (de)
DE (1) DE3473318D1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298315A1 (de) * 1987-07-10 1989-01-11 BBC Brown Boveri AG Rotationskolben-Verdrängungsarbeitsmaschine
EP0437165A2 (de) * 1990-01-08 1991-07-17 Carrier Corporation Spitzendichtung für Spiralverdichter
CN1056215C (zh) * 1995-10-26 2000-09-06 倪诗茂 容积式涡旋流体压缩装置的分段式前端密封装置
US6695597B2 (en) * 2000-03-06 2004-02-24 Anest Iwata Corporation Scroll fluid machine
EP1701039A1 (de) * 2003-11-28 2006-09-13 Daikin Industries, Ltd. Strömungsmaschine der spiralbauart
WO2016161488A3 (en) * 2015-04-09 2016-11-17 Atlas Copco Airpower, Naamloze Vennootschap Scroll type apparatus, method for manufacturing such a scroll type apparatus and seal for such a scroll type apparatus
BE1023333B1 (nl) * 2015-04-09 2017-02-07 Atlas Copco Airpower, N.V. Apparaat van het spiraaltype en werkwijze voor de productie van zulk apparaat en afdichting voor zulk apparaat
US9701365B2 (en) 2007-12-28 2017-07-11 Shimano Inc. Bicycle shift operating device
CN106989020A (zh) * 2017-06-08 2017-07-28 中国石油大学(华东) 一种无油润滑涡旋真空泵
WO2017144869A1 (en) * 2016-02-26 2017-08-31 Edwards Limited Scroll pump tip sealing
CN109386463A (zh) * 2018-12-06 2019-02-26 珠海格力节能环保制冷技术研究中心有限公司 压缩机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052169A (de) * 1900-01-01
GB135834A (en) * 1918-11-23 1920-07-15 Hugo Lars Reinhold Swartling Improvement in Tightening Means for Rotary Compressors, Hydraulic Generators and Motors, and the like.
GB908116A (en) * 1957-11-09 1962-10-17 Bird Instr Ltd Improvements in or relating to rotary pumps and motors
US3994636A (en) * 1975-03-24 1976-11-30 Arthur D. Little, Inc. Axial compliance means with radial sealing for scroll-type apparatus
US4043714A (en) * 1976-05-24 1977-08-23 Curtiss-Wright Corporation Seal grid assembly for rotary piston mechanism
US4082484A (en) * 1977-01-24 1978-04-04 Arthur D. Little, Inc. Scroll-type apparatus with fixed throw crank drive mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052169A (de) * 1900-01-01
GB135834A (en) * 1918-11-23 1920-07-15 Hugo Lars Reinhold Swartling Improvement in Tightening Means for Rotary Compressors, Hydraulic Generators and Motors, and the like.
GB908116A (en) * 1957-11-09 1962-10-17 Bird Instr Ltd Improvements in or relating to rotary pumps and motors
US3994636A (en) * 1975-03-24 1976-11-30 Arthur D. Little, Inc. Axial compliance means with radial sealing for scroll-type apparatus
US4043714A (en) * 1976-05-24 1977-08-23 Curtiss-Wright Corporation Seal grid assembly for rotary piston mechanism
US4082484A (en) * 1977-01-24 1978-04-04 Arthur D. Little, Inc. Scroll-type apparatus with fixed throw crank drive mechanism
US4082484B1 (de) * 1977-01-24 1983-06-21

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298315A1 (de) * 1987-07-10 1989-01-11 BBC Brown Boveri AG Rotationskolben-Verdrängungsarbeitsmaschine
US4883413A (en) * 1987-07-10 1989-11-28 Bbc Brown Boveri Ag Rotary spiral piston displacement machine having a silicon rubber biased seal
CH673135A5 (de) * 1987-07-10 1990-02-15 Bbc Brown Boveri & Cie
EP0437165A2 (de) * 1990-01-08 1991-07-17 Carrier Corporation Spitzendichtung für Spiralverdichter
EP0437165A3 (en) * 1990-01-08 1992-03-04 Carrier Corporation Tip seal for scroll compressor
CN1056215C (zh) * 1995-10-26 2000-09-06 倪诗茂 容积式涡旋流体压缩装置的分段式前端密封装置
US6695597B2 (en) * 2000-03-06 2004-02-24 Anest Iwata Corporation Scroll fluid machine
EP1701039A4 (de) * 2003-11-28 2008-01-23 Daikin Ind Ltd Strömungsmaschine der spiralbauart
EP1701039A1 (de) * 2003-11-28 2006-09-13 Daikin Industries, Ltd. Strömungsmaschine der spiralbauart
US7364418B2 (en) 2003-11-28 2008-04-29 Daikin Industries, Ltd. Scroll fluid machine having an adjustment member with a deformable element
CN100430602C (zh) * 2003-11-28 2008-11-05 大金工业株式会社 涡旋流体机械
US9701365B2 (en) 2007-12-28 2017-07-11 Shimano Inc. Bicycle shift operating device
WO2016161488A3 (en) * 2015-04-09 2016-11-17 Atlas Copco Airpower, Naamloze Vennootschap Scroll type apparatus, method for manufacturing such a scroll type apparatus and seal for such a scroll type apparatus
BE1023333B1 (nl) * 2015-04-09 2017-02-07 Atlas Copco Airpower, N.V. Apparaat van het spiraaltype en werkwijze voor de productie van zulk apparaat en afdichting voor zulk apparaat
WO2017144869A1 (en) * 2016-02-26 2017-08-31 Edwards Limited Scroll pump tip sealing
CN106989020A (zh) * 2017-06-08 2017-07-28 中国石油大学(华东) 一种无油润滑涡旋真空泵
CN106989020B (zh) * 2017-06-08 2019-06-11 中国石油大学(华东) 一种无油润滑涡旋真空泵
CN109386463A (zh) * 2018-12-06 2019-02-26 珠海格力节能环保制冷技术研究中心有限公司 压缩机

Also Published As

Publication number Publication date
KR860001681Y1 (en) 1986-07-25
EP0124114B1 (de) 1988-08-10
EP0124114A3 (en) 1985-01-09
DE3473318D1 (en) 1988-09-15

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