JPS54149954A - Induction heating device - Google Patents

Induction heating device

Info

Publication number
JPS54149954A
JPS54149954A JP5923478A JP5923478A JPS54149954A JP S54149954 A JPS54149954 A JP S54149954A JP 5923478 A JP5923478 A JP 5923478A JP 5923478 A JP5923478 A JP 5923478A JP S54149954 A JPS54149954 A JP S54149954A
Authority
JP
Japan
Prior art keywords
top plate
sensing
heat
resistant film
low potential
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
JP5923478A
Other languages
Japanese (ja)
Inventor
Yoshinosuke Nagata
Kazuyoshi Tsukamoto
Takao Nakatsuka
Kazufumi Ushijima
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP5923478A priority Critical patent/JPS54149954A/en
Publication of JPS54149954A publication Critical patent/JPS54149954A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable a top plate to detect occurrence of electrostatic shield and crack by forming an rear side of the top plate a wide-sensing resistant film.
CONSTITUTION: A negative characteristic heat-sensing film 5 is joined onto almost entire surface of rear side of a top plate 4 consisting of reinforcing ceramic and arranged in the vicinity of the top of a heating coil 3, and one end of this is connected to low potential side of a power source circuit 8 and the other side is connected to a contact 9 of a resistant R2 and a capacitor C2. In this mechanism, AC electrostatic induction voltage goes to low potential terminal and potential of the heat-sensing resistant film 5 is always kept at low potential level, and at the same time, if a crack should occur on the top plate 4 because of shock, etc., during heating operation, the heat-sensing resistant film 5 is disconnected, base current of a transistor Tr3 stops travelling, collector potential turns into low level reversing an output of a NAND gate 10 to high voltage level, stopping operation of a switching transistor Tr1 through conduction and non-conduction of the transistors Tr4 and Tr2, and therefore, the heating operation is stopped.
COPYRIGHT: (C)1979,JPO&Japio
JP5923478A 1978-05-16 1978-05-16 Induction heating device Pending JPS54149954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5923478A JPS54149954A (en) 1978-05-16 1978-05-16 Induction heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5923478A JPS54149954A (en) 1978-05-16 1978-05-16 Induction heating device

Publications (1)

Publication Number Publication Date
JPS54149954A true JPS54149954A (en) 1979-11-24

Family

ID=13107481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5923478A Pending JPS54149954A (en) 1978-05-16 1978-05-16 Induction heating device

Country Status (1)

Country Link
JP (1) JPS54149954A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963995U (en) * 1982-10-22 1984-04-27 三洋電機株式会社 electromagnetic induction cooker
WO2003079728A1 (en) * 2002-03-19 2003-09-25 Matsushita Electric Industrial Co., Ltd. Induction heating device
US10386403B2 (en) 2016-01-29 2019-08-20 Abb Schweiz Ag Failure tolerant capacitor device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963995U (en) * 1982-10-22 1984-04-27 三洋電機株式会社 electromagnetic induction cooker
WO2003079728A1 (en) * 2002-03-19 2003-09-25 Matsushita Electric Industrial Co., Ltd. Induction heating device
EP1492386A1 (en) * 2002-03-19 2004-12-29 Matsushita Electric Industrial Co., Ltd. Induction heating device
US7009159B2 (en) 2002-03-19 2006-03-07 Matsushita Electric Industrial Co., Ltd. Induction heating apparatus having electrostatic shielding member
US7173224B2 (en) 2002-03-19 2007-02-06 Matsushita Electric Industrial Co., Ltd. Induction heating apparatus having electrostatic shielding member
EP1492386A4 (en) * 2002-03-19 2008-12-03 Panasonic Corp Induction heating device
US10386403B2 (en) 2016-01-29 2019-08-20 Abb Schweiz Ag Failure tolerant capacitor device

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