CN200953667Y - Electromagnetic oven with automatic high voltage and frequency controlled power tube - Google Patents
Electromagnetic oven with automatic high voltage and frequency controlled power tube Download PDFInfo
- Publication number
- CN200953667Y CN200953667Y CN 200620007052 CN200620007052U CN200953667Y CN 200953667 Y CN200953667 Y CN 200953667Y CN 200620007052 CN200620007052 CN 200620007052 CN 200620007052 U CN200620007052 U CN 200620007052U CN 200953667 Y CN200953667 Y CN 200953667Y
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- high voltage
- resistance
- electromagnetic oven
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Abstract
The utility model discloses a circuit structure for induction cooker capable of automatically controlling high voltage and frequency of power tube, which arranges an automatic high voltage control device on an internal power tube circuit in the induction cooker in parallel. Wherein, the automatic high voltage control device is composed of a high voltage control chipset, a resistor, a condenser and a rectifying diode. An automatic frequency control device is connected with a collector circuit of the power tube in parallel. The automatic frequency control device is consisted of a resistor, a condenser and a rectifying diode. As kitchenware is lifted up less than 30mm towards the induction cooker surface, the automatic high voltage control device inputs the high voltage signals to high voltage control chipset after DC processing. Thus, the chipset inputs pulse width signals to a pulse width control circuit after processing. In addition, frequency signals firstly flow through the resistor, condenser and rectifying diode circuit of the automatic frequency control device and then enter into a frequency control circuit. Variable pulse width signals and variable frequency signals are transmitted to the power tube through a drive circuit to ensure power tube stability. The utility model can effectively prevent burning power tube and failure, maintain normal operation of the induction cooker and ensure more safety and reliability of induction cooker.
Description
Technical field
The utility model relates to electromagnetic oven, particularly a kind of electromagnetic oven with automatic power controlling pipe high pressure and frequency.
Background technology
In the market in the circuit of Liu Tong electromagnetic oven inside not to the power tube high pressure protector, during use, when cooker is lifted away from electromagnetic oven when surface, the voltage of power tube can raise suddenly in the circuit of electromagnetic oven inside, burns out power tube easily.The means that general electromagnetic oven is taked to shut down protect the element of the circuit of electromagnetic oven inside not to be damaged.The shortcoming of the circuit of the means protection electromagnetic oven inside of taking to shut down is the operate as normal that influences electromagnetic oven.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at above-mentioned electromagnetic oven; develop a kind of electromagnetic oven with automatic power controlling pipe high pressure and frequency; when cooker is lifted away from the electromagnetic oven surface in certain distance; automatically the voltage of power controlling and frequency input; prevent to burn out power tube and shutdown effectively; keep the operate as normal of electromagnetic oven, make the electromagnetic oven safety and reliability.
The purpose of this utility model is achieved in that
The high-pressure installation of control automatically in parallel on the circuit of power tube in the circuit of electromagnetic oven inside, control high-pressure installation automatically and form by control high pressure chip, resistance, electric capacity, rectifier diode.The circuit connecting mode of control high pressure chip, resistance, electric capacity, rectifier diode is: the collector electrode of power tube is connected with resistance, the other end of resistance is connected with rectifier diode, the other end of rectifier diode is connected with resistance, electric capacity, and then the input with control high pressure chip is connected.The output of control high pressure chip is connected with resistance, follows with the input of the former operating circuit of electromagnetic oven to be connected.While is control frequency device automatically in parallel on the collector circuit of power tube, and the control frequency device is made up of resistance, electric capacity and rectifier diode automatically.Automatically control frequency device circuit connected mode is: the collector electrode of power tube is connected with resistance, the other end of resistance is connected with electric capacity, then be connected with two rectifier diodes, the other end of rectifier diode is connected with electric capacity, then is connected with the input of the former operating circuit of electromagnetic oven.
The operation principle of the utility model circuit is: AC power enters the coil normal operation of the operating circuit control electromagnetic oven of electromagnetic oven through over commutation from ac power switch.When cooker is lifted away from the electromagnetic oven surface in 30 millimeters distances, the coil voltage of electromagnetic oven raises, frequency reduces.Automatic control high-pressure installation in parallel on the circuit of power tube is handled the input chip to high-voltage signal through direct current, and chip is the pulse width signal input control pulsewidth circuit after handling; While is control frequency device automatically in parallel on the circuit of power tube, and frequency signal enters the control frequency circuit through resistance, electric capacity and diode circuit.Through promoting circuit, the ingoing power pipe makes the power tube steady operation the signal of variable impulse width, variable frequency for control pulsewidth circuit and control frequency circuit.
Owing to adopt the utility model, when cooker leaves the electromagnetic oven surface in 30 millimeters distances, the voltage of power controlling and frequency input automatically can effectively prevent to burn out power tube and shutdown, and the operate as normal of electromagnetic oven makes electromagnetic oven safer.
Description of drawings
Fig. 1 is the utility model circuit diagram.
Embodiment
In conjunction with Fig. 1 and embodiment, further describe structure of the present utility model.
Embodiment:
AC power enters coil 2 normal operations of the operating circuit control electromagnetic oven of electromagnetic oven through over commutation from ac power switch 1, the high-pressure installation 9 of control automatically in parallel on the circuit of power tube 3 in the circuit of electromagnetic oven inside, control high-pressure installation 9 automatically and form by control high pressure chip 5, resistance, electric capacity, rectifier diode.The circuit connecting mode of control high pressure chip 5, resistance, electric capacity, rectifier diode is: the collector electrode of power tube 3 is connected with resistance, the other end of resistance is connected with rectifier diode, the other end of rectifier diode is connected with resistance, electric capacity, and then the input with control high pressure chip 5 is connected.The output of control high pressure chip 5 is connected with resistance, follows with the input of the former operating circuit 7 of electromagnetic oven to be connected.While is control frequency device 10 automatically in parallel on the collector circuit of power tube 3, and control frequency device 10 is made up of resistance, electric capacity and rectifier diode automatically.Automatically control frequency device 10 circuit connecting modes are: the collector electrode of power tube 3 is connected with resistance, the other end of resistance is connected with electric capacity, then be connected with two rectifier diodes, the other end of rectifier diode is connected with electric capacity, then is connected with the input of the former operating circuit 8 of electromagnetic oven.When cooker leaves the electromagnetic oven surface in certain distance, coil 2 voltages of electromagnetic oven raise, frequency reduces.Automatically control high-pressure installation 9 in parallel is handled input chip 5 to high-voltage signal through direct current on the circuit of power tube 3, and chip 5 is the pulse width signal input control pulsewidth circuit 7 after handling; While is control frequency device 10 automatically in parallel on the circuit of power tube 3, and frequency signal enters control frequency circuit 8 through resistance, electric capacity and diode circuit.Control pulsewidth circuit 7 and control frequency circuit 8 signal process variable impulse width, variable frequency circuit 6, promotion circuit 4, ingoing power pipe 3, the coil 2 that makes power tube 3 control electromagnetic ovens normally moves, steady operation.
Claims (1)
1, electromagnetic oven with automatic power controlling pipe high pressure and frequency, by coil (2), power tube (3), control frequency circuit (8), control pulsewidth circuit (7), variable frequency circuit (6), promoting circuit (4) forms, it is characterized in that: the high-pressure installation (9) of control automatically in parallel on the circuit of power tube (3), automatically control high-pressure installation (9) is by control high pressure chip (5), resistance, electric capacity, rectifier diode is formed, control high pressure chip (5), resistance, electric capacity, the circuit connecting mode of rectifier diode is: the collector electrode of power tube (3) is connected with resistance, the other end of resistance is connected with rectifier diode, the other end of rectifier diode and resistance, electric capacity connects, then the input with control high pressure chip (5) is connected, the output of control high pressure chip (5) is connected with resistance, then be connected with the input of the former operating circuit (7) of electromagnetic oven, automatically control frequency device (10) in parallel on the collector circuit of power tube (3), automatically control frequency device (10) is by resistance, electric capacity and rectifier diode are formed, automatically control frequency device (10) circuit connecting mode is: the collector electrode of power tube (3) is connected with resistance, the other end of resistance is connected with electric capacity, then be connected with two rectifier diodes, the other end of rectifier diode is connected with electric capacity, then is connected with the input of the former operating circuit (8) of electromagnetic oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007052 CN200953667Y (en) | 2006-03-13 | 2006-03-13 | Electromagnetic oven with automatic high voltage and frequency controlled power tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007052 CN200953667Y (en) | 2006-03-13 | 2006-03-13 | Electromagnetic oven with automatic high voltage and frequency controlled power tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200953667Y true CN200953667Y (en) | 2007-09-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620007052 Expired - Fee Related CN200953667Y (en) | 2006-03-13 | 2006-03-13 | Electromagnetic oven with automatic high voltage and frequency controlled power tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200953667Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010066103A1 (en) * | 2008-12-12 | 2010-06-17 | 深圳市鑫汇科科技有限公司 | Method and circuit for detecting intensity of igbt recoil high voltage in electromagnetic stove |
| CN101754507B (en) * | 2008-12-12 | 2012-05-09 | 深圳市鑫汇科科技有限公司 | induction cooker circuit based on SoC chip |
| CN102984837A (en) * | 2012-12-10 | 2013-03-20 | 广东澳得科技股份有限公司 | Energy-saving multifrequency electromagnetic induction heating device |
| CN109442502A (en) * | 2018-10-11 | 2019-03-08 | 珠海格力电器股份有限公司 | Electromagnetic heating device power adjusting system, electromagnetic heating device and adjusting method |
-
2006
- 2006-03-13 CN CN 200620007052 patent/CN200953667Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010066103A1 (en) * | 2008-12-12 | 2010-06-17 | 深圳市鑫汇科科技有限公司 | Method and circuit for detecting intensity of igbt recoil high voltage in electromagnetic stove |
| CN101754507B (en) * | 2008-12-12 | 2012-05-09 | 深圳市鑫汇科科技有限公司 | induction cooker circuit based on SoC chip |
| CN102984837A (en) * | 2012-12-10 | 2013-03-20 | 广东澳得科技股份有限公司 | Energy-saving multifrequency electromagnetic induction heating device |
| CN102984837B (en) * | 2012-12-10 | 2014-07-30 | 广东澳得科技股份有限公司 | Energy-saving multifrequency electromagnetic induction heating device |
| CN109442502A (en) * | 2018-10-11 | 2019-03-08 | 珠海格力电器股份有限公司 | Electromagnetic heating device power adjusting system, electromagnetic heating device and adjusting method |
| CN109442502B (en) * | 2018-10-11 | 2020-02-04 | 珠海格力电器股份有限公司 | Electromagnetic heating device power adjusting system, electromagnetic heating device and adjusting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Guangdong town of Changping city of Dongguan province zip lined Kok village along a Road Hexi No. 69-70 Dongguan Hui Kitchen Digital Technology Co. Ltd., 560523 Patentee after: Deng Zhixiong Address before: Guangdong province Dongguan City Huangjiang Avenue Long Road No. 8 Dongguan Hui star kitchen Digital Technology Co., zip code: 523768 Patentee before: Deng Zhixiong |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20130313 |