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Cooking device having function of over-current protection

A technology for cooking equipment and overcurrent protection, which is applied to home appliances, kitchen utensils, cooking utensils, etc., can solve the problems of IGBT damage, current detection through IGBT, etc., and achieve the effect of preventing damage

Active Publication Date: 2016-03-30
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In cooking equipment using half-bridge topology or full-bridge topology, the high-power switching element IGBT (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor) is usually used to construct the half-bridge topology or full-bridge topology. During use, if the current flowing through the IGBT If the current is too large, the IGBT will be damaged due to overcurrent
However, the current flowing through the IGBT is not detected in the cooking equipment of the related art

Method used

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  • Cooking device having function of over-current protection

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Embodiment Construction

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0022] A cooking device with an overcurrent protection function according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0023] figure 1 is a schematic block diagram of a cooking device with an overcurrent protection function according to an embodiment of the present invention. Such as figure 1 As shown, the cooking device includes: an electromagnetic energy conversion circuit 20 , a drive circuit 30 , a current sampling circuit 40 , an overcurrent protection cir...

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Abstract

The invention discloses a cooking device having the function of over-current protection. The cooking device includes: an electromagnetic energy conversion circuit which is provided with an electromagnetic coil and a power switch unit; a drive circuit which is connected to an input end of the electromagnetic energy conversion circuit and is used for driving on-off of the power switch unit; a current sampling circuit which is used for acquiring the current of the electromagnetic coil; an over-current protection circuit which is connected to the current sampling circuit and generates a trigger signal when the current of the electromagnetic coil is greater than a preset current value; and a controller which is connected to the drive circuit and the over-current protection circuit and closes a control signal being output to the drive circuit after receiving the trigger signal. The cooking device can perform real-time monitoring on the current of the electromagnetic coil through the current sampling circuit, and can timely stop output of a drive signal in the drive circuit during over-current, so that the power switch unit such as an IGBT, can be protected, and damage to the power switch unit such as an IGBT, due to over-current, can be prevented.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a cooking device with an overcurrent protection function. Background technique [0002] In cooking equipment using half-bridge topology or full-bridge topology, the high-power switching element IGBT (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor) is usually used to construct the half-bridge topology or full-bridge topology. During use, if the current flowing through the IGBT If the current is too large, the IGBT will be damaged due to overcurrent. However, the current flowing through the IGBT is not detected in the related art cooking equipment. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. [0004] Therefore, the object of the present invention is to propose a cooking device with an overcurrent protection function capable of p...

Claims

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Application Information

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IPC IPC(8): H05B6/12H05B6/06H05B6/04A47J36/24A47J27/00
Inventor 曾露添
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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