EP2149708A2 - Compresseur à spirales avec connections de by-pass entrainé par un moteur synchrone à aimants permanents alimenté par le secteur. - Google Patents

Compresseur à spirales avec connections de by-pass entrainé par un moteur synchrone à aimants permanents alimenté par le secteur. Download PDF

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Publication number
EP2149708A2
EP2149708A2 EP09251430A EP09251430A EP2149708A2 EP 2149708 A2 EP2149708 A2 EP 2149708A2 EP 09251430 A EP09251430 A EP 09251430A EP 09251430 A EP09251430 A EP 09251430A EP 2149708 A2 EP2149708 A2 EP 2149708A2
Authority
EP
European Patent Office
Prior art keywords
scroll compressor
scroll
permanent magnet
capacity
scroll member
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.)
Withdrawn
Application number
EP09251430A
Other languages
German (de)
English (en)
Other versions
EP2149708A3 (fr
Inventor
Gergory W. Hahn
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.)
Danfoss Scroll Technologies LLC
Original Assignee
Scroll Technologies LLC
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 Scroll Technologies LLC filed Critical Scroll Technologies LLC
Publication of EP2149708A2 publication Critical patent/EP2149708A2/fr
Publication of EP2149708A3 publication Critical patent/EP2149708A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04C18/0215—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 where only one member is moving
    • 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
    • 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
    • F04C29/0085—Prime movers
    • 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
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels

Definitions

  • This application relates to a scroll compressor having a line fed permanent magnet synchronous type motor, which has a relatively constant power curve as a load changes, and wherein the scroll compressor is provided with a function to reduce capacity.
  • Scroll compressors are becoming widely utilized in refrigerant compression applications.
  • a pair of scroll elements each have a base and a generally spiral wrap extending from the base. The wraps interfit to define compression chambers.
  • An electric motor drives a shaft, and the shaft drives one of the two scroll members to rotate relative to the other through a non-rotation coupling.
  • An induction motor has been utilized.
  • An induction motor has a peak efficiency at a certain load torque, above as well as below which the efficiency decreases.
  • the value of reducing the capacity, which is to save energy, is somewhat lost due to the reduced efficiency.
  • a scroll compressor having some way of reducing capacity is provided with a line fed permanent magnet synchronous type motor.
  • the permanent magnet motor has a higher peak efficiency, and a flatter efficiency versus torque curve compared to the prior art induction motor.
  • a scroll compressor 20 is illustrated in Figure 1 .
  • a motor stator 22 causes a motor rotor 23 to rotate.
  • a shaft 24 is driven to rotate.
  • Shaft 24 causes an orbiting scroll 26 to orbit relative to a non-orbiting scroll 28, as known.
  • the components as described at this point are housed within a shell 30.
  • a suction port 32 receives a suction refrigerant from a refrigerant cycle, and delivers that refrigerant to compression chambers between the orbiting scroll 26 and non-orbiting scroll 28.
  • a discharge tube 34 delivers a compressed refrigerant downstream into the refrigerant cycle.
  • Bypass ports 36 communicate with the compression chambers, and may return a partially or fully compressed refrigerant to the suction pressure, such as suction tube 32.
  • a bypass line 38 incorporates a valve 40 to selectively communicate this refrigerant back to the suction port.
  • any other way of communicating partially or fully compressed refrigerant back to the suction pressure may be utilized with this invention.
  • other ways of modulating the capacity of the compressor would come within the scope of this invention.
  • scroll compressors are known wherein a biasing force is provided behind one of the two scroll compressors. Pulse width modulation techniques may be utilized to lower that biasing force under certain conditions such that the scroll members can come away from each other and reduce the capacity.
  • the scroll compressor includes a tap 100 extending through the orbiting scroll member 26 into a back pressure chamber 102. As known, this creates a biasing force holding the orbiting scroll member 26 in contact with the non-orbiting scroll member 28.
  • the drive between the shaft 24 and the scroll compressor 26 is through a slider block arrangement 110.
  • Such arrangements allow for radial movement of the orbiting scroll 26.
  • Both the axial compliance and the radial compliance allow the reduction of capacity by allowing the wraps of the scroll members to move out of contact with each other. Techniques for providing this reduction in capacity are known. It is the use of a particular motor with such an ability to reduce capacity which is inventive here.
  • This invention relates to the use of a permanent magnet synchronous motor for any scroll compressor having the ability to reduce its capacity.
  • Such motors have a high peak efficiency, and a flatter efficiency versus torque curve.
  • the motor 22/23 will still operate more efficiently than the prior art which utilize an induction motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP09251430A 2008-07-31 2009-05-28 Compresseur à spirales avec connections de by-pass entrainé par un moteur synchrone à aimants permanents alimenté par le secteur. Withdrawn EP2149708A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/183,149 US20100028182A1 (en) 2008-07-31 2008-07-31 Line fed permanent magnet synchronous type motor for scroll compressor with bypass ports

Publications (2)

Publication Number Publication Date
EP2149708A2 true EP2149708A2 (fr) 2010-02-03
EP2149708A3 EP2149708A3 (fr) 2011-06-29

Family

ID=41301344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09251430A Withdrawn EP2149708A3 (fr) 2008-07-31 2009-05-28 Compresseur à spirales avec connections de by-pass entrainé par un moteur synchrone à aimants permanents alimenté par le secteur.

Country Status (5)

Country Link
US (1) US20100028182A1 (fr)
EP (1) EP2149708A3 (fr)
JP (1) JP2010038154A (fr)
KR (1) KR20100014104A (fr)
CN (1) CN101639066A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2622224A4 (fr) * 2010-09-30 2018-01-10 Emerson Climate Technologies, Inc. Compresseur à capacité variable pourvu d'un moteur à aimant permanent sans balai à courant de démarrage en ligne

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8579614B2 (en) * 2011-02-04 2013-11-12 Danfoss Scroll Technologies Llc Scroll compressor with three discharge valves, and discharge pressure tap to back pressure chamber
KR101747175B1 (ko) * 2016-02-24 2017-06-14 엘지전자 주식회사 스크롤 압축기
KR101800261B1 (ko) 2016-05-25 2017-11-22 엘지전자 주식회사 스크롤 압축기
KR101839886B1 (ko) 2016-05-30 2018-03-19 엘지전자 주식회사 스크롤 압축기

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020001532A1 (en) * 2000-06-30 2002-01-03 Chang Yong Il Radial compliance scroll compressor
US20050019176A1 (en) * 2003-07-26 2005-01-27 Lg Electronics Inc. Variable capacity scroll compressor
JP2005117771A (ja) * 2003-10-07 2005-04-28 Hitachi Ltd 永久磁石式同期電動機及びこれを用いた圧縮機
US20060051227A1 (en) * 2004-09-07 2006-03-09 Guang-Der Tarng Axial compliance mechanism of scroll compressor
US20070145851A1 (en) * 2005-12-28 2007-06-28 Satoshi Kikuchi Permanent magnet synchronous motor and compressor using the same
US20070284961A1 (en) * 2006-06-09 2007-12-13 Akeshi Takahashi Permanent Magnet Synchronous Motor, Rotor of the Same, and Compressor Using the Same
JP2007330060A (ja) * 2006-06-09 2007-12-20 Hitachi Appliances Inc 永久磁石電動機，永久磁石同期電動機の回転子及びそれを用いた圧縮機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100434077B1 (ko) * 2002-05-01 2004-06-04 엘지전자 주식회사 스크롤 압축기의 진공 방지 장치
CN1698251B (zh) * 2003-07-09 2010-11-03 松下电器产业株式会社 同步感应电动机及使用该电动机的电动封闭式压缩机
JP2006183499A (ja) * 2004-12-27 2006-07-13 Hitachi Ltd 容積形圧縮機
US7431576B2 (en) * 2005-11-30 2008-10-07 Scroll Technologies Ductile cast iron scroll compressor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020001532A1 (en) * 2000-06-30 2002-01-03 Chang Yong Il Radial compliance scroll compressor
US20050019176A1 (en) * 2003-07-26 2005-01-27 Lg Electronics Inc. Variable capacity scroll compressor
JP2005117771A (ja) * 2003-10-07 2005-04-28 Hitachi Ltd 永久磁石式同期電動機及びこれを用いた圧縮機
US20060051227A1 (en) * 2004-09-07 2006-03-09 Guang-Der Tarng Axial compliance mechanism of scroll compressor
US20070145851A1 (en) * 2005-12-28 2007-06-28 Satoshi Kikuchi Permanent magnet synchronous motor and compressor using the same
US20070284961A1 (en) * 2006-06-09 2007-12-13 Akeshi Takahashi Permanent Magnet Synchronous Motor, Rotor of the Same, and Compressor Using the Same
JP2007330060A (ja) * 2006-06-09 2007-12-20 Hitachi Appliances Inc 永久磁石電動機，永久磁石同期電動機の回転子及びそれを用いた圧縮機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2622224A4 (fr) * 2010-09-30 2018-01-10 Emerson Climate Technologies, Inc. Compresseur à capacité variable pourvu d'un moteur à aimant permanent sans balai à courant de démarrage en ligne

Also Published As

Publication number Publication date
CN101639066A (zh) 2010-02-03
KR20100014104A (ko) 2010-02-10
JP2010038154A (ja) 2010-02-18
US20100028182A1 (en) 2010-02-04
EP2149708A3 (fr) 2011-06-29

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