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JPS57143187A - Power reduction method of screw compressor at no load - Google Patents

Power reduction method of screw compressor at no load

Info

Publication number
JPS57143187A
JPS57143187A JP2618081A JP2618081A JPS57143187A JP S57143187 A JPS57143187 A JP S57143187A JP 2618081 A JP2618081 A JP 2618081A JP 2618081 A JP2618081 A JP 2618081A JP S57143187 A JPS57143187 A JP S57143187A
Authority
JP
Japan
Prior art keywords
compressor
secondary side
load
pressure
vacuum
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
JP2618081A
Other languages
Japanese (ja)
Inventor
Shizuo Gomi
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP2618081A priority Critical patent/JPS57143187A/en
Publication of JPS57143187A publication Critical patent/JPS57143187A/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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary-Type Compressors (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To reduce power of a compressor at its no load operation, by preventing a suction side vacuum in the compressor and early decreasing its delivery side pressure, that is, by feeding air in an oil separator tank to the secondary side of a suction valve when the screw compressor is operated at no load. CONSTITUTION:Pressure in a delivery pipe 6 rises at no load operation of a compressor, and is detected by a pressure switch 10 to operate a three-way solenoid valve 11, then the primary side 16 of a suction valve 3 is shut off from its secondary side 17, thus the secondary side of the suction valve 3 tends to be a vacuum. At this time, because an automatic relief valve 13 is opened by compressed air from the three-way solenoid valve 11, compressed air in an oil separator tank 5 passes through a pipe 15 and is fed to the secondary side 17 of the suction valve 3. As a result, the secondary side 17 is prevented from generating a vacuum, simultaneously delivery side pressure of the compressor 1 can be also decreased, in this way, power can be early and surely reduced for the compressor 1 at its no load operation.
JP2618081A 1981-02-26 1981-02-26 Power reduction method of screw compressor at no load Pending JPS57143187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2618081A JPS57143187A (en) 1981-02-26 1981-02-26 Power reduction method of screw compressor at no load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2618081A JPS57143187A (en) 1981-02-26 1981-02-26 Power reduction method of screw compressor at no load

Publications (1)

Publication Number Publication Date
JPS57143187A true JPS57143187A (en) 1982-09-04

Family

ID=12186321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2618081A Pending JPS57143187A (en) 1981-02-26 1981-02-26 Power reduction method of screw compressor at no load

Country Status (1)

Country Link
JP (1) JPS57143187A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355260A2 (en) * 1988-08-19 1990-02-28 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Screw type vacuum pump
US7255543B2 (en) 2004-06-08 2007-08-14 Sanden Corporation Scroll compressor and air-conditioning system for vehicle using the scroll compressor
US7281912B2 (en) * 2004-09-28 2007-10-16 Sanden Corporation Compressor having a safety device being built in at least one of the screw plugs of the oil-separator
US7314355B2 (en) 2004-05-27 2008-01-01 Sanden Corporation Compressor including deviated separation chamber
US7438536B2 (en) 2003-12-10 2008-10-21 Sanden Corproation Compressors including a plurality of oil storage chambers which are in fluid communication with each other
US7736136B2 (en) 2003-12-10 2010-06-15 Sanden Corporation Compressor including separation tube engagement mechanism
JP2018013099A (en) * 2016-07-21 2018-01-25 三井精機工業株式会社 compressor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021712B1 (en) * 1963-10-14 1975-07-24
JPS513407B1 (en) * 1970-12-23 1976-02-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021712B1 (en) * 1963-10-14 1975-07-24
JPS513407B1 (en) * 1970-12-23 1976-02-03

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355260A2 (en) * 1988-08-19 1990-02-28 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Screw type vacuum pump
US7438536B2 (en) 2003-12-10 2008-10-21 Sanden Corproation Compressors including a plurality of oil storage chambers which are in fluid communication with each other
US7736136B2 (en) 2003-12-10 2010-06-15 Sanden Corporation Compressor including separation tube engagement mechanism
US7314355B2 (en) 2004-05-27 2008-01-01 Sanden Corporation Compressor including deviated separation chamber
US7255543B2 (en) 2004-06-08 2007-08-14 Sanden Corporation Scroll compressor and air-conditioning system for vehicle using the scroll compressor
US7281912B2 (en) * 2004-09-28 2007-10-16 Sanden Corporation Compressor having a safety device being built in at least one of the screw plugs of the oil-separator
JP2018013099A (en) * 2016-07-21 2018-01-25 三井精機工業株式会社 compressor

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