JPS5525752A - Controller for number of pumps - Google Patents

Controller for number of pumps

Info

Publication number
JPS5525752A
JPS5525752A JP9865578A JP9865578A JPS5525752A JP S5525752 A JPS5525752 A JP S5525752A JP 9865578 A JP9865578 A JP 9865578A JP 9865578 A JP9865578 A JP 9865578A JP S5525752 A JPS5525752 A JP S5525752A
Authority
JP
Japan
Prior art keywords
pumps
cool
valves
warm water
over
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
JP9865578A
Other languages
Japanese (ja)
Inventor
Toshiaki Ogawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9865578A priority Critical patent/JPS5525752A/en
Publication of JPS5525752A publication Critical patent/JPS5525752A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE: To enable a control of the most suitable number of pumps, by changing discharge of cool and warm water as occasion demands according to a local condition, and by simultaneously determining a change-over of a cool and warm water valve and a control of the number of pumps.
CONSTITUTION: Cool water flown from a cool water forward header CFH is sucked into pumps P1 to P3 through valves CFB1 to CFB3, and cool water being discharged flows to a cool water piping passage CFP through valves B1 to B3 and also flows to a warm water piping passage WFP through valves B4 to B6. A controller CONT for the number of pumps inputs operating condition signals of signal air conditioners AC1, AC2 and pumps P1 to P3 and changing-over condition signals of valves CB1, CB2, BB1 to BB2, B1 to B6 which are detected by a cool water discharge detector CDFT and a warm water discharge detector WDET. According to the input, the optional number of the pumps P1 to P3, which should start or stop running, are controlled, and cool-warm water change-over signals of the pumps P1 to P3 (signals for changing-over to CFB1 or WFB1) are outputed.
COPYRIGHT: (C)1980,JPO&Japio
JP9865578A 1978-08-15 1978-08-15 Controller for number of pumps Pending JPS5525752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9865578A JPS5525752A (en) 1978-08-15 1978-08-15 Controller for number of pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9865578A JPS5525752A (en) 1978-08-15 1978-08-15 Controller for number of pumps

Publications (1)

Publication Number Publication Date
JPS5525752A true JPS5525752A (en) 1980-02-23

Family

ID=14225515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9865578A Pending JPS5525752A (en) 1978-08-15 1978-08-15 Controller for number of pumps

Country Status (1)

Country Link
JP (1) JPS5525752A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0519839U (en) * 1991-03-04 1993-03-12 東邦瓦斯株式会社 Simultaneous cooling and heating air conditioning system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0519839U (en) * 1991-03-04 1993-03-12 東邦瓦斯株式会社 Simultaneous cooling and heating air conditioning system

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