EP4112940A4 - Screw compressor and freezer - Google Patents

Screw compressor and freezer Download PDF

Info

Publication number
EP4112940A4
EP4112940A4 EP20922379.1A EP20922379A EP4112940A4 EP 4112940 A4 EP4112940 A4 EP 4112940A4 EP 20922379 A EP20922379 A EP 20922379A EP 4112940 A4 EP4112940 A4 EP 4112940A4
Authority
EP
European Patent Office
Prior art keywords
freezer
screw compressor
compressor
screw
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.)
Pending
Application number
EP20922379.1A
Other languages
German (de)
French (fr)
Other versions
EP4112940A1 (en
Inventor
Takeshi Ito
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
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP4112940A1 publication Critical patent/EP4112940A1/en
Publication of EP4112940A4 publication Critical patent/EP4112940A4/en
Pending legal-status Critical Current

Links

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
    • F04C18/48—Rotary-piston pumps with non-parallel axes of movement of co-operating members
    • F04C18/50—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees
    • F04C18/52—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/045—Heating; Cooling; Heat insulation of the electric motor in 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
    • F04C2240/30—Casings or housings
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP20922379.1A 2020-02-27 2020-02-27 Screw compressor and freezer Pending EP4112940A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/008051 WO2021171489A1 (en) 2020-02-27 2020-02-27 Screw compressor and freezer

Publications (2)

Publication Number Publication Date
EP4112940A1 EP4112940A1 (en) 2023-01-04
EP4112940A4 true EP4112940A4 (en) 2023-04-26

Family

ID=77491094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20922379.1A Pending EP4112940A4 (en) 2020-02-27 2020-02-27 Screw compressor and freezer

Country Status (2)

Country Link
EP (1) EP4112940A4 (en)
WO (1) WO2021171489A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903497A (en) * 1987-09-04 1990-02-27 Bernard Zimmern Methods and devices for cooling a motor of a refrigerating machine with liquid and economizer gas
DE102012102346A1 (en) * 2012-03-20 2013-09-26 Bitzer Kühlmaschinenbau Gmbh Refrigerant compressor
JP2015001220A (en) * 2013-06-18 2015-01-05 ダイキン工業株式会社 Screw compressor
EP2873858A1 (en) * 2012-05-18 2015-05-20 Valeo Japan Co., Ltd. Electric compressor
JP2017053280A (en) * 2015-09-10 2017-03-16 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド Screw compressor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141115U (en) * 1974-09-24 1976-03-26
JP3950304B2 (en) * 2000-06-23 2007-08-01 株式会社神戸製鋼所 Screw compressor for refrigeration equipment
JP2008057875A (en) * 2006-08-31 2008-03-13 Mitsubishi Electric Corp Refrigerating cycle device
JP6373034B2 (en) * 2014-03-31 2018-08-15 三菱電機株式会社 refrigerator
JP7075721B2 (en) 2017-04-10 2022-05-26 日立ジョンソンコントロールズ空調株式会社 Screw compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903497A (en) * 1987-09-04 1990-02-27 Bernard Zimmern Methods and devices for cooling a motor of a refrigerating machine with liquid and economizer gas
DE102012102346A1 (en) * 2012-03-20 2013-09-26 Bitzer Kühlmaschinenbau Gmbh Refrigerant compressor
EP2873858A1 (en) * 2012-05-18 2015-05-20 Valeo Japan Co., Ltd. Electric compressor
JP2015001220A (en) * 2013-06-18 2015-01-05 ダイキン工業株式会社 Screw compressor
JP2017053280A (en) * 2015-09-10 2017-03-16 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド Screw compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021171489A1 *

Also Published As

Publication number Publication date
EP4112940A1 (en) 2023-01-04
WO2021171489A1 (en) 2021-09-02

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