JPS5781181A - Pressure tank type water supply system - Google Patents

Pressure tank type water supply system

Info

Publication number
JPS5781181A
JPS5781181A JP15590080A JP15590080A JPS5781181A JP S5781181 A JPS5781181 A JP S5781181A JP 15590080 A JP15590080 A JP 15590080A JP 15590080 A JP15590080 A JP 15590080A JP S5781181 A JPS5781181 A JP S5781181A
Authority
JP
Japan
Prior art keywords
pump
pressure
timer
pressure tank
switch
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
JP15590080A
Other languages
Japanese (ja)
Other versions
JPH0156280B2 (en
Inventor
Koichi Sato
Yasuhiro Mita
Hideo Zenitani
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 JP15590080A priority Critical patent/JPS5781181A/en
Publication of JPS5781181A publication Critical patent/JPS5781181A/en
Publication of JPH0156280B2 publication Critical patent/JPH0156280B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To save the power required to drive a pump, by connecting a pressure switch to a pressure tank, and providing a timer to be energized when the pump stops and a switch adapted to operate the pump for a time period after each closure of the pressure switch until the lapse of the preset time interval of the timer.
CONSTITUTION: A pressure switch 5, which is closed by the first pressure and opened by the second pressure being higher than the first pressure, is connected to a pressure tank. Such devices are also provided as a timer T to be energized when a pump stops and a switch M adapted to operate the pump for a time period after closure of the pressure switch 5 until the lapse of the preset time interval of the timer T, if the preset time interval has not lapsed. Thereby, the frequency of starting the pump can be limited low even if the pressure tank 1 is relative small and if the pump is stopping longer than the lapse of the preset time interval of the timer T, the pump is not driven continuously, so that the power required to drive the pump can be saved.
COPYRIGHT: (C)1982,JPO&Japio
JP15590080A 1980-11-07 1980-11-07 Pressure tank type water supply system Granted JPS5781181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15590080A JPS5781181A (en) 1980-11-07 1980-11-07 Pressure tank type water supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15590080A JPS5781181A (en) 1980-11-07 1980-11-07 Pressure tank type water supply system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP25690890A Division JPH03206390A (en) 1990-09-28 1990-09-28 Pressure tank type water feed device

Publications (2)

Publication Number Publication Date
JPS5781181A true JPS5781181A (en) 1982-05-21
JPH0156280B2 JPH0156280B2 (en) 1989-11-29

Family

ID=15615960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15590080A Granted JPS5781181A (en) 1980-11-07 1980-11-07 Pressure tank type water supply system

Country Status (1)

Country Link
JP (1) JPS5781181A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59110897A (en) * 1982-12-17 1984-06-26 Hitachi Ltd Water feed apparatus having pressure tank
JPS6079196A (en) * 1983-10-05 1985-05-04 Matsushita Electric Ind Co Ltd Automatic water feeding apparatus
JPS60173391A (en) * 1984-02-17 1985-09-06 Shibaura Eng Works Co Ltd Controller for pump
JPS60192896A (en) * 1984-03-13 1985-10-01 Shibaura Eng Works Co Ltd Control unit for pump
JPS62121892A (en) * 1985-11-20 1987-06-03 Sanyo Electric Co Ltd Automatic pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59110897A (en) * 1982-12-17 1984-06-26 Hitachi Ltd Water feed apparatus having pressure tank
JPS6079196A (en) * 1983-10-05 1985-05-04 Matsushita Electric Ind Co Ltd Automatic water feeding apparatus
JPH042800B2 (en) * 1983-10-05 1992-01-20
JPS60173391A (en) * 1984-02-17 1985-09-06 Shibaura Eng Works Co Ltd Controller for pump
JPS60192896A (en) * 1984-03-13 1985-10-01 Shibaura Eng Works Co Ltd Control unit for pump
JPS62121892A (en) * 1985-11-20 1987-06-03 Sanyo Electric Co Ltd Automatic pump

Also Published As

Publication number Publication date
JPH0156280B2 (en) 1989-11-29

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