JPS6488057A - Control device for electric water heater - Google Patents

Control device for electric water heater

Info

Publication number
JPS6488057A
JPS6488057A JP24335587A JP24335587A JPS6488057A JP S6488057 A JPS6488057 A JP S6488057A JP 24335587 A JP24335587 A JP 24335587A JP 24335587 A JP24335587 A JP 24335587A JP S6488057 A JPS6488057 A JP S6488057A
Authority
JP
Japan
Prior art keywords
hot water
energization
decreased
low
voltage
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
JP24335587A
Other languages
Japanese (ja)
Inventor
Seiji Oshio
Toshihiro Horiuchi
Makoto Okada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP24335587A priority Critical patent/JPS6488057A/en
Publication of JPS6488057A publication Critical patent/JPS6488057A/en
Pending legal-status Critical Current

Links

Landscapes

  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

PURPOSE:To prevent temperature within a hot water tank from being excessively lowered by a method wherein a signal from a hot water temperature sensor is compared with a boiling temperature set signal and a differential value of an energization of an electric heater is decreased when the boiling temperature set is low. CONSTITUTION:When a hot water temperature sensor 3a detects that temperature within a hot water tank is low, an output from a comparator 13 shows an 'L' voltage, transistors 18a and 15 are turned ON, a feed-back resistor 14 is inserted in parallel with a reference resistor 25. A differential value until the reference voltage is decreased and energization for an electric heater 2a is stopped is generated. A transistor 21a is also turned ON to drive a coil 22a, energization of a heater 2a is started and when a hot water temperature sensor 3a detects its boiling temperature, output from the comparator 13 shows 'H' voltage, a feed-back resistor 14 is turned off, the reference voltage becomes high and then energization of the heater 2a is terminated. When a set boiling temperature is low, the reference voltage is low, so that even if the feed-back resistor 14 is connected in parallel, the voltage is less decreased and the differential value is decreased.
JP24335587A 1987-09-28 1987-09-28 Control device for electric water heater Pending JPS6488057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24335587A JPS6488057A (en) 1987-09-28 1987-09-28 Control device for electric water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24335587A JPS6488057A (en) 1987-09-28 1987-09-28 Control device for electric water heater

Publications (1)

Publication Number Publication Date
JPS6488057A true JPS6488057A (en) 1989-04-03

Family

ID=17102603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24335587A Pending JPS6488057A (en) 1987-09-28 1987-09-28 Control device for electric water heater

Country Status (1)

Country Link
JP (1) JPS6488057A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900262A (en) * 2014-03-03 2014-07-02 杨喜山 Electric contact power on and off device of electric heating water circulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900262A (en) * 2014-03-03 2014-07-02 杨喜山 Electric contact power on and off device of electric heating water circulator

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