JPS5744787A - Method for controlling number of rotary displacement type compressor in operation - Google Patents

Method for controlling number of rotary displacement type compressor in operation

Info

Publication number
JPS5744787A
JPS5744787A JP11546380A JP11546380A JPS5744787A JP S5744787 A JPS5744787 A JP S5744787A JP 11546380 A JP11546380 A JP 11546380A JP 11546380 A JP11546380 A JP 11546380A JP S5744787 A JPS5744787 A JP S5744787A
Authority
JP
Japan
Prior art keywords
compressor
compressors
volume
marginal
compressed gas
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
JP11546380A
Other languages
Japanese (ja)
Other versions
JPS627399B2 (en
Inventor
Masao Sawada
Shiro Hirose
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP11546380A priority Critical patent/JPS5744787A/en
Publication of JPS5744787A publication Critical patent/JPS5744787A/en
Publication of JPS627399B2 publication Critical patent/JPS627399B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To save energy by a method wherein the number of the compressors counterbalanced to the consumed amount of compressed gas are put in operation.
CONSTITUTION: An unloader for the compressor is functioned to decrease the discharge volume from the compressor with the lowering of the suction pressure of the compressor C by throttling a suction throttle valve V. At first, all the unloaders of the compressors in operation out of a plurality of the compressors are functioned and as well as all the suction pressures of the compressors in operation are measured to be compared with the respective suction pressures at the rated operation of each of the compressors C and to calculate the respectiv marginal volumes Ai. When the overall marginal volume A, which integrates all the marginal volumes Ai of the compressors C in operation, exceeds the rated discharge volume of one compressor C, one compressor in operation is brought to stop. Or, when the marginal volume A decreases, one compressor is additonally brought to start in order to produce the compressed gas counterbalancing to the cosumed amount of compressed gas. An automatic start and stop discriminator circuit is provided to realize the method mentioned above by monitoring the overall marginal volume A and comparing the monitored volume A with the set upper limit value AH and the set lower limit value AL.
COPYRIGHT: (C)1982,JPO&Japio
JP11546380A 1980-08-20 1980-08-20 Method for controlling number of rotary displacement type compressor in operation Granted JPS5744787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11546380A JPS5744787A (en) 1980-08-20 1980-08-20 Method for controlling number of rotary displacement type compressor in operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11546380A JPS5744787A (en) 1980-08-20 1980-08-20 Method for controlling number of rotary displacement type compressor in operation

Publications (2)

Publication Number Publication Date
JPS5744787A true JPS5744787A (en) 1982-03-13
JPS627399B2 JPS627399B2 (en) 1987-02-17

Family

ID=14663157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11546380A Granted JPS5744787A (en) 1980-08-20 1980-08-20 Method for controlling number of rotary displacement type compressor in operation

Country Status (1)

Country Link
JP (1) JPS5744787A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1014042A5 (en) * 2000-09-20 2003-03-04 Hitachi Ltd SCREW COMPRESSOR SYSTEM AND ITS OPERATING METHOD.
JP2012516987A (en) * 2009-02-02 2012-07-26 オプティマム・エナジー，エルエルシー Arrangement of variable speed compressors in a cooled liquid cooling system for improved energy efficiency
JP2013164025A (en) * 2012-02-10 2013-08-22 Miura Co Ltd System for controlling number of compressors
JP2014074395A (en) * 2012-10-05 2014-04-24 Haruo Orihashi Compressor operation control device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4910003A (en) * 1972-05-23 1974-01-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4910003A (en) * 1972-05-23 1974-01-29

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1014042A5 (en) * 2000-09-20 2003-03-04 Hitachi Ltd SCREW COMPRESSOR SYSTEM AND ITS OPERATING METHOD.
US6599094B2 (en) * 2000-09-20 2003-07-29 Hitachi, Ltd. Screw compressor system and operating method thereof
CN1306169C (en) * 2000-09-20 2007-03-21 株式会社日立制作所 Screw compressor and its running method
JP2012516987A (en) * 2009-02-02 2012-07-26 オプティマム・エナジー，エルエルシー Arrangement of variable speed compressors in a cooled liquid cooling system for improved energy efficiency
JP2013164025A (en) * 2012-02-10 2013-08-22 Miura Co Ltd System for controlling number of compressors
JP2014074395A (en) * 2012-10-05 2014-04-24 Haruo Orihashi Compressor operation control device

Also Published As

Publication number Publication date
JPS627399B2 (en) 1987-02-17

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