JPS56124698A - Volume controller for compressor - Google Patents

Volume controller for compressor

Info

Publication number
JPS56124698A
JPS56124698A JP2657580A JP2657580A JPS56124698A JP S56124698 A JPS56124698 A JP S56124698A JP 2657580 A JP2657580 A JP 2657580A JP 2657580 A JP2657580 A JP 2657580A JP S56124698 A JPS56124698 A JP S56124698A
Authority
JP
Japan
Prior art keywords
pressure
compressor
air
oil separator
unload
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
JP2657580A
Other languages
Japanese (ja)
Other versions
JPS6357634B2 (en
Inventor
Akira Suzuki
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2657580A priority Critical patent/JPS56124698A/en
Publication of JPS56124698A publication Critical patent/JPS56124698A/en
Publication of JPS6357634B2 publication Critical patent/JPS6357634B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Applications Or Details Of Rotary Compressors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To reduce shaft power remarkably in unload running by a method wherein the air in an oil seprator is discharged to the intended pressure and the pressure ratio of a compressor is made smaller than conventional one.
CONSTITUTION: When a compressor 1 is in unload running, the air in the oil separator 5 is discharged from a pipe 21 to an inlet port 9i through a pipe 25. Thus, the air in the oil separator 5 keeps the set-up pressure (e.g. 4kg/cm2) of a pressure regulating valve 20. In this way, since the air in the oil separator 5 is released down to the intended pressure in unload running, the pressure ratio of the compressor 1 (the value given by the pressure in the discharge passage divided by the pressure in the suction passage) becomes smaller than conventionally and as a result the shaft in unload running can be reduced remarkably.
COPYRIGHT: (C)1981,JPO&Japio
JP2657580A 1980-03-05 1980-03-05 Volume controller for compressor Granted JPS56124698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2657580A JPS56124698A (en) 1980-03-05 1980-03-05 Volume controller for compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2657580A JPS56124698A (en) 1980-03-05 1980-03-05 Volume controller for compressor

Publications (2)

Publication Number Publication Date
JPS56124698A true JPS56124698A (en) 1981-09-30
JPS6357634B2 JPS6357634B2 (en) 1988-11-11

Family

ID=12197343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2657580A Granted JPS56124698A (en) 1980-03-05 1980-03-05 Volume controller for compressor

Country Status (1)

Country Link
JP (1) JPS56124698A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0571481A (en) * 1991-09-10 1993-03-23 Hitachi Ltd Capacity control method and device for screw compressor
AT401551B (en) * 1994-03-30 1996-10-25 Hoerbiger Ventilwerke Ag DEVICE FOR REDUCING THE PRESSURE OF A COMPRESSOR
JP2001355576A (en) * 2000-06-15 2001-12-26 Hokuetsu Kogyo Co Ltd Capacity control method and device for compressor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112008U (en) * 1974-07-15 1976-01-29

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112008B2 (en) * 1972-04-19 1976-04-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112008U (en) * 1974-07-15 1976-01-29

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0571481A (en) * 1991-09-10 1993-03-23 Hitachi Ltd Capacity control method and device for screw compressor
AT401551B (en) * 1994-03-30 1996-10-25 Hoerbiger Ventilwerke Ag DEVICE FOR REDUCING THE PRESSURE OF A COMPRESSOR
JP2001355576A (en) * 2000-06-15 2001-12-26 Hokuetsu Kogyo Co Ltd Capacity control method and device for compressor
JP4603129B2 (en) * 2000-06-15 2010-12-22 北越工業株式会社 Compressor capacity control method and capacity control apparatus

Also Published As

Publication number Publication date
JPS6357634B2 (en) 1988-11-11

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