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Quasi-resonance electromagnetic heating circuit

A technology of heating circuit and electromagnetic heating device, which is applied in the direction of induction heating and induction heating control, etc., which can solve the problems of potential safety hazards, high requirements on the performance of the heating circuit of water heaters, and easy generation of scale.

Inactive Publication Date: 2009-05-13
张军才 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The common heating method in the prior art is often that the heating body itself is charged, which has certain safety hazards in the process of use, and for the heating of water, it is easy to generate scale over time, which will affect the heating effect and cause safety problems. ; In order to ensure the stable operation and safety performance of the water heater, the water heater has very high requirements on the performance of the heating circuit itself

Method used

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  • Quasi-resonance electromagnetic heating circuit
  • Quasi-resonance electromagnetic heating circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 As shown, a quasi-resonant electromagnetic heating circuit includes a quasi-resonant electromagnetic heating device and a group of IGBT module IGBTs. The quasi-resonant electromagnetic heating device includes an insulating cavity, a magnetic metal heating element, a high-frequency electromagnetic coil L and a A capacitor C connected in parallel with the high-frequency electromagnetic coil L, the high-frequency electromagnetic coil L is arranged outside the insulating cavity, the magnetic metal heating element is arranged in the inner cavity of the insulating cavity, and one end of the high-frequency electromagnetic coil L is connected to a DC Power supply VCC, the other end of the high-frequency electromagnetic coil L is connected to the IGBT collector of the IGBT module, the IGBT emitter of the IGBT module is grounded, the IGBT base of the IGBT module is connected to one end of the discharge resistor R2, and the other end of the discharge resistor R2 G...

Embodiment 2

[0015] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 lies in: a quasi-resonant electromagnetic heating circuit, which includes a quasi-resonant electromagnetic heating device and two sets of IGBT modules IGBT1 and IGBT2.

[0016] With respect to the above embodiment, the other end of the buffer resistor R1 is further connected to the cathode of a reference voltage stabilizing diode, and the anode of the reference voltage stabilizing diode is grounded.

[0017] It should be noted that this circuit can be used in any electromagnetic heating device or equipment.

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Abstract

The present invention provides a quasi-resonant electromagnetic heating circuit which comprising quasi-resonant electromagnetic heating apparatus and at least one set of IGBT module, wherein the quasi-resonant electromagnetic heating apparatus includes a insulation cavity, magnetic metal heater, high frequency electromagnetic coil and capacitance connected in parallel to high frequency electromagnetic coil. High frequency electromagnetic coil is set outside of insulation cavity; magnetic metal heater is set inside insulation cavity; one end of high frequency electromagnetic coil is connected to DC power, and the other end is connected to the IGBT module collector, IGBT module grounded emitter; one end of discharge resistance is connected to IGBT module base and the other end connected to ground; one end of snubber resistance is connected to IGBT module base and the other end connected to controlling signal. The quasi-resonant electromagnetic heating circuit combines IGBT module with electromagnetic heating apparatus skillfully with reasonable circuit structure, simple principle, strong practicality, safety and reliability, and stable operation.

Description

technical field [0001] The invention relates to a heating circuit, in particular to a quasi-resonance electromagnetic heating circuit. Background technique [0002] The common heating method in the prior art is often that the heating body itself is charged, which has certain safety hazards in the process of use, and for the heating of water, it is easy to generate scale over time, which will affect the heating effect and cause safety problems. ; In order to ensure the stable operation and safety performance of the water heater, the water heater has very high requirements on the performance of the heating circuit itself. [0003] In order to solve the above problems, people have been looking for an ideal technical solution. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies of the prior art, thereby providing a quasi-resonant electromagnetic heating circuit with strong practicability, safety, reliability and stable opera...

Claims

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Application Information

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IPC IPC(8): H05B6/02H05B6/06
Inventor 张军才杨建昌
Owner 张军才
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