JPS54149954A - Induction heating device - Google Patents
Induction heating deviceInfo
- 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
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
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)
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 |
-
1978
- 1978-05-16 JP JP5923478A patent/JPS54149954A/en active Pending
Cited By (7)
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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