JPS54160984A - Controller of cold and warm water unit - Google Patents

Controller of cold and warm water unit

Info

Publication number
JPS54160984A
JPS54160984A JP6880078A JP6880078A JPS54160984A JP S54160984 A JPS54160984 A JP S54160984A JP 6880078 A JP6880078 A JP 6880078A JP 6880078 A JP6880078 A JP 6880078A JP S54160984 A JPS54160984 A JP S54160984A
Authority
JP
Japan
Prior art keywords
water
water temperature
unit
possessed
temperature
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
JP6880078A
Other languages
Japanese (ja)
Inventor
Akiyoshi Taga
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 JP6880078A priority Critical patent/JPS54160984A/en
Publication of JPS54160984A publication Critical patent/JPS54160984A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To control the width of the variation of water temperature in small value by the quantity of water possessed, which can be ensured in response to the conditions of a locations where a unit is installed, by mounting a temperature detecting means into a water piping system.
CONSTITUTION: A sensor 25 for detecting water temperature is mounted to a water piping 24, and the output signals of the sensor 25 input the temperature of water possessed to a micro-computer 8 through an AD converter 23. Auxiliary relays 26, 27 are connected to the output side of a keyboard 8. When electricity is conducted to the auxiliary relay 26, a condition that water temperature reaches a set point is brought, and an electromagnetic contactor for Number One compressor is de-energized. When water temperature reaches the next set point, electricity is conducted to the auxiliary relay 27, and Number Two compressore also stops. Thus, the control of water temperature suitable for the quantity of water possessed, which is decided according to the conditions of execution, can automatically be controlled, the width of the variation of the water temperature of a unit can be lessened and the operation of the unit can be caontrolled efficiently and stably.
COPYRIGHT: (C)1979,JPO&Japio
JP6880078A 1978-06-09 1978-06-09 Controller of cold and warm water unit Pending JPS54160984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6880078A JPS54160984A (en) 1978-06-09 1978-06-09 Controller of cold and warm water unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6880078A JPS54160984A (en) 1978-06-09 1978-06-09 Controller of cold and warm water unit

Publications (1)

Publication Number Publication Date
JPS54160984A true JPS54160984A (en) 1979-12-20

Family

ID=13384150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6880078A Pending JPS54160984A (en) 1978-06-09 1978-06-09 Controller of cold and warm water unit

Country Status (1)

Country Link
JP (1) JPS54160984A (en)

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