EP1911975A1 - Compresseur électrique scellé - Google Patents

Compresseur électrique scellé Download PDF

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Publication number
EP1911975A1
EP1911975A1 EP07019353A EP07019353A EP1911975A1 EP 1911975 A1 EP1911975 A1 EP 1911975A1 EP 07019353 A EP07019353 A EP 07019353A EP 07019353 A EP07019353 A EP 07019353A EP 1911975 A1 EP1911975 A1 EP 1911975A1
Authority
EP
European Patent Office
Prior art keywords
lubricant
drive shaft
compressor
refrigerant
reservoir chamber
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
EP07019353A
Other languages
German (de)
English (en)
Other versions
EP1911975B1 (fr
Inventor
Akiyoshi Higashiyama
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
Application filed by Sanden Corp filed Critical Sanden Corp
Publication of EP1911975A1 publication Critical patent/EP1911975A1/fr
Application granted granted Critical
Publication of EP1911975B1 publication Critical patent/EP1911975B1/fr
Expired - Fee Related legal-status Critical Current
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
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • 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
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1027—CO2
    • 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
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1072—Oxygen (O2)
    • 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

  • the refrigerant is taken into the sealed housing and then drawn into the compression unit, and the refrigerant is mixed with the lubricant.
  • the lubricant is utilized not only to prevent the above-mentioned seizure, but also to create a seal between the sliding contact surfaces within the compression unit.
  • a sealed electric compressor disclosed in Japanese Unexamined Patent Publication No. Hei 10-47269 includes a return pipe for collecting the lubricant supplied to the sliding contact surfaces, bearings, etc. and returning the lubricant to the reservoir chamber.
  • the above-mentioned return pipe extends outside the electric motor within the sealed housing, so that the sealed housing has an increased size, which results in an increased weight of the sealed housing, and therefore of the compressor as a whole.
  • the return path can be provided to include a seal ring fitted into the support member, under the lower bearing, to surround the outer cylindrical face of the drive shaft and prevent the lubricant from flowing down, and a discharge hole formed in the support member to be located above the seal ring and have an inner open end facing the outer cylindrical face of the drive shaft and an outer open end located at the outer cylindrical face of the support member.
  • a seal ring and discharge hole reliably stops the lubricant flowing down the outer cylindrical face of the drive shaft toward the rotor.
  • the rotation of the counter weight 10 and the rotor 7 does not cause a strong rotating flow of the refrigerant, around the lower part of the main support 14.
  • the phenomenon that the lubricant discharged from the main support 14 is caused to fly off by the rotating flow of the refrigerant is reduced, and the lubricant is directed toward the stator 8 satisfactorily.
  • the lubricant directed to the stator 8 then flows down through spaces within the stator 8, specifically, spaces between the armature windings 9 within the stator 8, onto the sub-support 18. As shown in FIG. 1, a plurality of discharge holes 19 are formed in the sub-support 18, so that the lubricant falling on the sub-support 18 returns to the reservoir chamber 23 through the discharge holes 19, without staying on the sub-support 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP20070019353 2006-10-04 2007-10-02 Compresseur électrique scellé Expired - Fee Related EP1911975B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006272851A JP2008088930A (ja) 2006-10-04 2006-10-04 密閉型圧縮機

Publications (2)

Publication Number Publication Date
EP1911975A1 true EP1911975A1 (fr) 2008-04-16
EP1911975B1 EP1911975B1 (fr) 2009-07-22

Family

ID=38963096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070019353 Expired - Fee Related EP1911975B1 (fr) 2006-10-04 2007-10-02 Compresseur électrique scellé

Country Status (3)

Country Link
EP (1) EP1911975B1 (fr)
JP (1) JP2008088930A (fr)
DE (1) DE602007001653D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010131061A1 (fr) * 2009-05-12 2010-11-18 JENSEN, Söby, Stefan Compresseur hermétiquement fermé et procédés associés
CN104870816A (zh) * 2012-12-20 2015-08-26 三菱电机株式会社 密闭式旋转压缩机
WO2017106030A1 (fr) * 2015-12-15 2017-06-22 Bitzer Kuehlmaschinenbau Gmbh Retour d'huile avec tube non circulaire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762471A (en) * 1984-11-06 1988-08-09 Kabushiki Kaisha Toshiba Rotary compressor for refrigerant
JPH0610864A (ja) * 1992-06-30 1994-01-21 Mitsubishi Electric Corp スクロール圧縮機
JPH1047269A (ja) * 1996-08-01 1998-02-17 Mitsubishi Electric Corp スクロール圧縮機
EP0924430A1 (fr) * 1997-12-18 1999-06-23 Mitsubishi Heavy Industries, Ltd. Compresseur à spirales hermétiques
US6386840B1 (en) * 2000-02-04 2002-05-14 Scroll Technologies Oil return for reduced height scroll compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762471A (en) * 1984-11-06 1988-08-09 Kabushiki Kaisha Toshiba Rotary compressor for refrigerant
JPH0610864A (ja) * 1992-06-30 1994-01-21 Mitsubishi Electric Corp スクロール圧縮機
JPH1047269A (ja) * 1996-08-01 1998-02-17 Mitsubishi Electric Corp スクロール圧縮機
EP0924430A1 (fr) * 1997-12-18 1999-06-23 Mitsubishi Heavy Industries, Ltd. Compresseur à spirales hermétiques
US6386840B1 (en) * 2000-02-04 2002-05-14 Scroll Technologies Oil return for reduced height scroll compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010131061A1 (fr) * 2009-05-12 2010-11-18 JENSEN, Söby, Stefan Compresseur hermétiquement fermé et procédés associés
CN104870816A (zh) * 2012-12-20 2015-08-26 三菱电机株式会社 密闭式旋转压缩机
WO2017106030A1 (fr) * 2015-12-15 2017-06-22 Bitzer Kuehlmaschinenbau Gmbh Retour d'huile avec tube non circulaire
US10132317B2 (en) 2015-12-15 2018-11-20 Bitzer Kuehlmaschinenbau Gmbh Oil return with non-circular tube

Also Published As

Publication number Publication date
DE602007001653D1 (de) 2009-09-03
EP1911975B1 (fr) 2009-07-22
JP2008088930A (ja) 2008-04-17

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