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JPS575123A - Controller for cooling water of turbo-refrigerator - Google Patents
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JPS575123A - Controller for cooling water of turbo-refrigerator - Google Patents

Controller for cooling water of turbo-refrigerator

Info

Publication number
JPS575123A
JPS575123A JP7901680A JP7901680A JPS575123A JP S575123 A JPS575123 A JP S575123A JP 7901680 A JP7901680 A JP 7901680A JP 7901680 A JP7901680 A JP 7901680A JP S575123 A JPS575123 A JP S575123A
Authority
JP
Japan
Prior art keywords
control
condenser
vane
turbo
cooling water
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
JP7901680A
Other languages
Japanese (ja)
Other versions
JPS6342175B2 (en
Inventor
Michio Kumaki
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 JP7901680A priority Critical patent/JPS575123A/en
Publication of JPS575123A publication Critical patent/JPS575123A/en
Publication of JPS6342175B2 publication Critical patent/JPS6342175B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

PURPOSE:To increase the width of a capacity control range through operation at the outside of a surging region, by varying condensing pressure to control pressure, which corresponds to a surging limit, by the indication of a control motor for driving vanes. CONSTITUTION:When water is fed to a condenser 3 and a turbo-compressor 1 is put in operation, a refrigerant circulates through the condenser 3, an expansion valve 11, an evaporator 12, and the turbo-compressor 1 as a refrigerating cycle, and thus the water is fed to the evaporator 12 to obtain cooling water. When the quantity of the suction of the compressor 1 is varied by varying a load, the opening extent of a vane 7 is varied by detecting the temperature of the cooling water, and the limit switch of a control motor 6 for driving the vane, when the opening extent of the vane reaches a set value, operates to send an indication of variation in condenser control pressure to a controller 4 for cascade control. Consequently, the control pressure of the condenser 3 is varied in three steps corresponding to the opening degree of the vane, and the control range of refrigerating capacity is increased without entering a surging region.
JP7901680A 1980-06-13 1980-06-13 Controller for cooling water of turbo-refrigerator Granted JPS575123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7901680A JPS575123A (en) 1980-06-13 1980-06-13 Controller for cooling water of turbo-refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7901680A JPS575123A (en) 1980-06-13 1980-06-13 Controller for cooling water of turbo-refrigerator

Publications (2)

Publication Number Publication Date
JPS575123A true JPS575123A (en) 1982-01-11
JPS6342175B2 JPS6342175B2 (en) 1988-08-22

Family

ID=13678141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7901680A Granted JPS575123A (en) 1980-06-13 1980-06-13 Controller for cooling water of turbo-refrigerator

Country Status (1)

Country Link
JP (1) JPS575123A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161646A (en) * 1983-03-07 1984-09-12 株式会社日立製作所 Method and device for controlling capacity of turbo-refrigerator
JPS633938A (en) * 1986-06-02 1988-01-08 アクチーボラゲット　アカールント　ウント　ラウジング Manufacture through which waste material of coated profile material is not generated and device thereof
CN110579674A (en) * 2019-10-14 2019-12-17 珠海格力电器股份有限公司 Fault detection circuit with simplified structure, fault judgment method and equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02112441A (en) * 1988-10-17 1990-04-25 Toyota Autom Loom Works Ltd Weft inserting method in three-dimensional loom

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS568426A (en) * 1979-07-04 1981-01-28 Nippon Oil Co Ltd Thermosetting resin composition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS568426A (en) * 1979-07-04 1981-01-28 Nippon Oil Co Ltd Thermosetting resin composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161646A (en) * 1983-03-07 1984-09-12 株式会社日立製作所 Method and device for controlling capacity of turbo-refrigerator
JPS633938A (en) * 1986-06-02 1988-01-08 アクチーボラゲット　アカールント　ウント　ラウジング Manufacture through which waste material of coated profile material is not generated and device thereof
CN110579674A (en) * 2019-10-14 2019-12-17 珠海格力电器股份有限公司 Fault detection circuit with simplified structure, fault judgment method and equipment

Also Published As

Publication number Publication date
JPS6342175B2 (en) 1988-08-22

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