JPS56135782A - Apparatus for controlling exhausting pressure and flowing quantity in screw compressor - Google Patents

Apparatus for controlling exhausting pressure and flowing quantity in screw compressor

Info

Publication number
JPS56135782A
JPS56135782A JP3745980A JP3745980A JPS56135782A JP S56135782 A JPS56135782 A JP S56135782A JP 3745980 A JP3745980 A JP 3745980A JP 3745980 A JP3745980 A JP 3745980A JP S56135782 A JPS56135782 A JP S56135782A
Authority
JP
Japan
Prior art keywords
function part
intake
regulating valve
control
opening degree
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
JP3745980A
Other languages
Japanese (ja)
Inventor
Yozo Hibino
Hajime Arai
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 JP3745980A priority Critical patent/JPS56135782A/en
Publication of JPS56135782A publication Critical patent/JPS56135782A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce power consumption and simplify a structure by properly changing intake throttling control with an intake regulating valve and ON and OFF control with the intake regulating valve and a discharging valve based on the amount of air used.
CONSTITUTION: In the case opening degree of the intake regulating valve 4 is judged to be larger than a specified opening degree by the third function part at first, the intake throttling control is carried out by the first function part (a). When the opening degree of the valve 4 reaches the specified opening degree, the first function part (a) is switched to the second function part (b) by the third function part (c), and the ON and OFF control is carried out by the second function part (b). Under this condition, if the fully opened time of the intake regulating valve 4 is judged to be shorter than the specified time by the third function part, the ON and OFF control is carried out by the second function part. When the fully opened time of the intake regulating valve 4 becomes longer that the specified time, the second function part (b) is switched to the first function part (a) by the thrird function part (c), and the intake throttling control is carried out by the first function part (a). By repeating the above mentioned sequence, the power consumption can be reduced at all times.
COPYRIGHT: (C)1981,JPO&Japio
JP3745980A 1980-03-26 1980-03-26 Apparatus for controlling exhausting pressure and flowing quantity in screw compressor Pending JPS56135782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3745980A JPS56135782A (en) 1980-03-26 1980-03-26 Apparatus for controlling exhausting pressure and flowing quantity in screw compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3745980A JPS56135782A (en) 1980-03-26 1980-03-26 Apparatus for controlling exhausting pressure and flowing quantity in screw compressor

Publications (1)

Publication Number Publication Date
JPS56135782A true JPS56135782A (en) 1981-10-23

Family

ID=12498102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3745980A Pending JPS56135782A (en) 1980-03-26 1980-03-26 Apparatus for controlling exhausting pressure and flowing quantity in screw compressor

Country Status (1)

Country Link
JP (1) JPS56135782A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008185036A (en) * 2008-03-24 2008-08-14 Kobe Steel Ltd Method of diagnosing degree of energy saving for compressor system
JP2013164024A (en) * 2012-02-10 2013-08-22 Miura Co Ltd System for controlling number of compressors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008185036A (en) * 2008-03-24 2008-08-14 Kobe Steel Ltd Method of diagnosing degree of energy saving for compressor system
JP2013164024A (en) * 2012-02-10 2013-08-22 Miura Co Ltd System for controlling number of compressors

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