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Electromagnetic oven hardware protection circuit

A technology for hardware protection and induction cooker, which is applied in emergency protection circuit devices, protection against overvoltage, electrical components, etc., can solve the problems of low safety and stability of induction cooker, and achieve strong stability and safety Good results

Active Publication Date: 2010-10-06
ZHEJIANG SUPOR ELECTRICAL APPLIANCES MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of low safety and low stability of the existing induction cooker, the present invention provides a hardware protection circuit for the induction cooker with strong stability and good safety.

Method used

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] refer to Figure 1 ~ Figure 3 , a hardware protection circuit for an electromagnetic oven, comprising a power failure protection subcircuit, the power failure protection subcircuit comprising a power failure comparator, the power failure comparator comprising a comparison voltage terminal, a reference voltage terminal and an output terminal, The external power supply of the induction cooker is connected to the comparison voltage terminal of the power-down comparator through the first resistor R406, the voltage comparison terminal of the power-down comparator is grounded through the second resistor R407, and the output terminal of the power-down comparator is connected to the power supply of the induction cooker Switch trigger circuit B.

[0020] The trigger circuit B converts the flip signal output by the comparator into a high-low level control signal to contr...

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Abstract

This invention relates to a hardware protection circuit of an induction cooker including a break protection sub-circuit containing a break comparator with a comparison voltage end, a primary voltage end and an output end, the outer supply of an induction cooker is connected with the comparison voltage end of the break comparator via resistor R406 and the voltage comparison end of the comparator is connected to the earth via resistor R407 and the output of the comparator is connected with trigger circuit B of the supply switch of the induction cooker.

Description

technical field [0001] The invention relates to an auxiliary equipment for an electromagnetic oven, in particular to a hardware protection circuit. Background technique [0002] Induction cooker is now a popular kitchen appliance. The induction cooker is mainly composed of resonant capacitors, IGBTs, and coil disks. However, it is impossible to manufacture an induction cooker with stable performance only by relying on these large components. If there is no protection of the peripheral circuit, or the protection function of the peripheral circuit fails to protect in time, the induction cooker is very easy to break down, blow up, and even a fire accident may occur during work. The length of service life and the safety performance are all subjected to severe tests; the safety and stability of the existing induction cooker need to be improved. Contents of the invention [0003] In order to overcome the disadvantages of low safety and low stability of the existing induction co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/24H02H3/20H02H3/06H02H5/04H05B6/02
Inventor 蔡才德赵礼荣黄理水
Owner ZHEJIANG SUPOR ELECTRICAL APPLIANCES MFG CO LTD