JPS6419262A - Control circuit for heat recovery type chilled water apparatus - Google Patents

Control circuit for heat recovery type chilled water apparatus

Info

Publication number
JPS6419262A
JPS6419262A JP17098287A JP17098287A JPS6419262A JP S6419262 A JPS6419262 A JP S6419262A JP 17098287 A JP17098287 A JP 17098287A JP 17098287 A JP17098287 A JP 17098287A JP S6419262 A JPS6419262 A JP S6419262A
Authority
JP
Japan
Prior art keywords
mode
timer
heat recovery
cold
hot 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
JP17098287A
Other languages
Japanese (ja)
Other versions
JP2590111B2 (en
Inventor
Masaru Kaneko
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 JP62170982A priority Critical patent/JP2590111B2/en
Publication of JPS6419262A publication Critical patent/JPS6419262A/en
Application granted granted Critical
Publication of JP2590111B2 publication Critical patent/JP2590111B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

PURPOSE: To suppress variation in mode within the set time of a same mode holding timer even if the cold/hot water temperature is varied by providing a timer for holding the operating time of the same operation mode in parallel with an auxiliary relay in an operation mode circuit. CONSTITUTION: When a load varies violently to cause a significant temperature fluctuation of cold/hot water temperature, transition is made violently among cooling, heat recovery and heating. Any one of auxiliary relays 7-9 is excited for each operating mode, and since timers 28-30 are provided in parallel with the relays 7-9 to form a circuit for self-holding any one of the relays 7-9 for the set time of a timer, operation mode is not switched for the set time of the timer even if the relay 10 or 11 is excited or not excited due to fluctuation of cold/hot water temperature. Consequently, deficiency of lubricant due to frequency mode switching can be prevented.
JP62170982A 1987-07-10 1987-07-10 Control circuit of heat recovery type cold / hot water system Expired - Lifetime JP2590111B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62170982A JP2590111B2 (en) 1987-07-10 1987-07-10 Control circuit of heat recovery type cold / hot water system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62170982A JP2590111B2 (en) 1987-07-10 1987-07-10 Control circuit of heat recovery type cold / hot water system

Publications (2)

Publication Number Publication Date
JPS6419262A true JPS6419262A (en) 1989-01-23
JP2590111B2 JP2590111B2 (en) 1997-03-12

Family

ID=15914936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62170982A Expired - Lifetime JP2590111B2 (en) 1987-07-10 1987-07-10 Control circuit of heat recovery type cold / hot water system

Country Status (1)

Country Link
JP (1) JP2590111B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0339868A (en) * 1989-07-07 1991-02-20 Hitachi Ltd Control circuit of heat recovery type cold/hot water device
JPH04105744U (en) * 1991-02-20 1992-09-11 岩崎通信機株式会社 Switch lever installation structure
US7011004B2 (en) 2001-07-06 2006-03-14 Honda Giken Kogyo Kabushiki Kaisha Trimming apparatus and method for fuel cell membrane/electrode coupling and transporting apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55163669U (en) * 1979-05-14 1980-11-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55163669U (en) * 1979-05-14 1980-11-25

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0339868A (en) * 1989-07-07 1991-02-20 Hitachi Ltd Control circuit of heat recovery type cold/hot water device
JPH04105744U (en) * 1991-02-20 1992-09-11 岩崎通信機株式会社 Switch lever installation structure
US7011004B2 (en) 2001-07-06 2006-03-14 Honda Giken Kogyo Kabushiki Kaisha Trimming apparatus and method for fuel cell membrane/electrode coupling and transporting apparatus

Also Published As

Publication number Publication date
JP2590111B2 (en) 1997-03-12

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