JPS5443344A - Induction heating apparatus - Google Patents
Induction heating apparatusInfo
- Publication number
- JPS5443344A JPS5443344A JP11015677A JP11015677A JPS5443344A JP S5443344 A JPS5443344 A JP S5443344A JP 11015677 A JP11015677 A JP 11015677A JP 11015677 A JP11015677 A JP 11015677A JP S5443344 A JPS5443344 A JP S5443344A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- circuit
- heating coil
- detecting
- resonance
- 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
Landscapes
- Cookers (AREA)
Abstract
PURPOSE:To improve the safety by means of a no-load detector adapted to shut off the power supply to the heating coil by accurately detecting whether the load to the heating coil is zero or close to the zero. CONSTITUTION:This induction heating apparatus is equipped with a heating coil 1, a switching circuit 2 for feeding power to the coil, a detecting coil 3 for detecting resonance frequency F in a resonance circuit including the heating coil, a switching control ciruit 4 and frequency difference measuring circuit 5. The ferquency difference measuring circuit is composed of a comparator 6, a refrence signal generating circuit 7 and an output meter 8 so as to determine a deviation between a detected frequency by the detecting coil based on a resonance frequency of the resonance circuit when a given maximum load is connected to the heating coil 1. When the deviation exceeds a fixed value, the circuit 4 shuts off the power supply to the coil 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11015677A JPS5443344A (en) | 1977-09-13 | 1977-09-13 | Induction heating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11015677A JPS5443344A (en) | 1977-09-13 | 1977-09-13 | Induction heating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5443344A true JPS5443344A (en) | 1979-04-05 |
Family
ID=14528462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11015677A Pending JPS5443344A (en) | 1977-09-13 | 1977-09-13 | Induction heating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5443344A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569987A (en) * | 1979-07-02 | 1981-01-31 | Tokyo Shibaura Electric Co | Induction heating cooking device |
| JPS58140977U (en) * | 1982-03-15 | 1983-09-22 | 三菱電機株式会社 | Hoisting machine for elevator |
| JPS61230289A (en) * | 1985-04-05 | 1986-10-14 | 株式会社東芝 | Induction heating cooker |
| US4736082A (en) * | 1987-04-07 | 1988-04-05 | Kabushiki Kaisha Toshiba | Electromagnetic induction heating apparatus capable of preventing undesirable states of cooking utensils or vessels |
| CN110811312A (en) * | 2018-08-07 | 2020-02-21 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance and control device and control method thereof |
-
1977
- 1977-09-13 JP JP11015677A patent/JPS5443344A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569987A (en) * | 1979-07-02 | 1981-01-31 | Tokyo Shibaura Electric Co | Induction heating cooking device |
| JPS58140977U (en) * | 1982-03-15 | 1983-09-22 | 三菱電機株式会社 | Hoisting machine for elevator |
| JPS6312145Y2 (en) * | 1982-03-15 | 1988-04-07 | ||
| JPS61230289A (en) * | 1985-04-05 | 1986-10-14 | 株式会社東芝 | Induction heating cooker |
| JPH0475633B2 (en) * | 1985-04-05 | 1992-12-01 | Tokyo Shibaura Electric Co | |
| US4736082A (en) * | 1987-04-07 | 1988-04-05 | Kabushiki Kaisha Toshiba | Electromagnetic induction heating apparatus capable of preventing undesirable states of cooking utensils or vessels |
| CN110811312A (en) * | 2018-08-07 | 2020-02-21 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance and control device and control method thereof |
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