JPS56114019A - Temperature controlling circuit - Google Patents

Temperature controlling circuit

Info

Publication number
JPS56114019A
JPS56114019A JP1681580A JP1681580A JPS56114019A JP S56114019 A JPS56114019 A JP S56114019A JP 1681580 A JP1681580 A JP 1681580A JP 1681580 A JP1681580 A JP 1681580A JP S56114019 A JPS56114019 A JP S56114019A
Authority
JP
Japan
Prior art keywords
temperature
heat
timer
resistance element
sensitive resistance
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
JP1681580A
Other languages
Japanese (ja)
Other versions
JPH0245204B2 (en
Inventor
Akihisa Nakano
Atsushi Teraguchi
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 JP1681580A priority Critical patent/JPS56114019A/en
Publication of JPS56114019A publication Critical patent/JPS56114019A/en
Publication of JPH0245204B2 publication Critical patent/JPH0245204B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Cookers (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE:To realize an automatic shift to the heat insulation state, by combining a timer and a heat-sensitive resistance element and then lowering the sensing temperature of the heat-sensitive resistance element after a prescribed set time. CONSTITUTION:The temperature of the cooking pot heated by the heater 3 is detected by the bridge circuit 18 using the heat-sensitive resistance element 23 for one side. When the temperature reaches the set level, the timer 9 is started by the output of the transistor TR17. At the same time, the thyristor 15 is controlled via the gate circuit 16 to keep the temperature of the heater 3 at a constant level. Then a resistance is connected in parallel to the element 23 when the timer set time elapses, and thus the sensing temperature lowers to be controlled thereafter by the heat insulating temperature. The switches 11 and 33 are provided to vary the resistance value of the circuit 18 to set the heat insulating temperature at a constant level for a high- and low-temperature cooking. In such way, an automatic shift is secured to the heat insulation state.
JP1681580A 1980-02-13 1980-02-13 Temperature controlling circuit Granted JPS56114019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1681580A JPS56114019A (en) 1980-02-13 1980-02-13 Temperature controlling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1681580A JPS56114019A (en) 1980-02-13 1980-02-13 Temperature controlling circuit

Publications (2)

Publication Number Publication Date
JPS56114019A true JPS56114019A (en) 1981-09-08
JPH0245204B2 JPH0245204B2 (en) 1990-10-08

Family

ID=11926660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1681580A Granted JPS56114019A (en) 1980-02-13 1980-02-13 Temperature controlling circuit

Country Status (1)

Country Link
JP (1) JPS56114019A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181121A (en) * 1982-03-19 1983-10-22 Tohoku Metal Ind Ltd Temperature controlling circuit provided with timer
JPS6047019U (en) * 1983-09-05 1985-04-02 株式会社日立ホームテック Room temperature control device
JPS6088525A (en) * 1983-10-20 1985-05-18 三菱電機株式会社 Rice cooker
JPH02104314A (en) * 1988-10-14 1990-04-17 Matsushita Electric Ind Co Ltd Electric kettle
JPH02144019A (en) * 1988-11-25 1990-06-01 Matsushita Electric Ind Co Ltd Electric water boiler
FR2786081A1 (en) * 1998-11-20 2000-05-26 Andre Guex Self-heating food tray for use e.g. in schools or hospitals has heater to raise temperature of food and then maintain it at set level

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128499U (en) * 1978-03-13 1978-10-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128499U (en) * 1978-03-13 1978-10-12

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181121A (en) * 1982-03-19 1983-10-22 Tohoku Metal Ind Ltd Temperature controlling circuit provided with timer
JPS6047019U (en) * 1983-09-05 1985-04-02 株式会社日立ホームテック Room temperature control device
JPS6088525A (en) * 1983-10-20 1985-05-18 三菱電機株式会社 Rice cooker
JPH02104314A (en) * 1988-10-14 1990-04-17 Matsushita Electric Ind Co Ltd Electric kettle
JPH02144019A (en) * 1988-11-25 1990-06-01 Matsushita Electric Ind Co Ltd Electric water boiler
FR2786081A1 (en) * 1998-11-20 2000-05-26 Andre Guex Self-heating food tray for use e.g. in schools or hospitals has heater to raise temperature of food and then maintain it at set level

Also Published As

Publication number Publication date
JPH0245204B2 (en) 1990-10-08

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