JPS5744787A - Method for controlling number of rotary displacement type compressor in operation - Google Patents
Method for controlling number of rotary displacement type compressor in operationInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910003A (en) * | 1972-05-23 | 1974-01-29 |
-
1980
- 1980-08-20 JP JP11546380A patent/JPS5744787A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910003A (en) * | 1972-05-23 | 1974-01-29 |
Cited By (6)
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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