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Method of protection circuit and electric pressure cooker and protection pressure switch

A pressure switch and protection circuit technology, applied in the field of protection circuit and electric pressure cooker, pressure switch protection, can solve the problems of accelerating contact oxidation, affecting the service life of electric pressure cooker, shortening the service life of pressure switch, etc.

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AI Technical Summary

Problems solved by technology

However, due to the strong current passing through the pressure switch, the sudden disconnection of the pressure switch will cause arcing between its two contacts, thereby accelerating the oxidation of the contacts, shortening the service life of the pressure switch, and further affecting the life of the electric pressure cooker. service life

Method used

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  • Method of protection circuit and electric pressure cooker and protection pressure switch
  • Method of protection circuit and electric pressure cooker and protection pressure switch
  • Method of protection circuit and electric pressure cooker and protection pressure switch

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Embodiment Construction

[0037] In order to understand the characteristics and technical content of the present invention in more detail, the implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the present invention.

[0038] figure 1 A schematic structural diagram of a protection circuit provided by an embodiment of the present invention. The protection circuit in this example is applied to an electric pressure cooker, such as figure 1 As shown, the protection circuit mainly includes: a pressure switch 20 connected to the power supply 10 , an electric heating plate 30 connected to the pressure switch 20 , and an electric heating plate 30 connected to the electric heating plate 30 and used to heat the electric heating plate 30 The heating module 40; the protection circuit also includes:

[0039] The switch protection module 50 is connected in...

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Abstract

The embodiment of the invention discloses a method of a protection circuit and an electric pressure cooker and a protection pressure switch; wherein the protection circuit comprises a pressure switchconnected with a power supply, an electric hot tray connected with the pressure switch and a heating module connected with the electric hot tray and used for heating the electric hot tray; the protection circuit further comprises a switch protection module, the switch protection module is connected in parallel with the pressure switch, and used for absorbing the energy flowing through the pressureswitch when the connected state of the pressure switch is changed to the off-state. According to the method, the arcing phenomenon generated by the oversize pressure between the two contactors of thepressure switch can be avoided, and the service life of the pressure switch is prolonged.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a method for protecting a circuit, an electric pressure cooker, and a pressure switch. Background technique [0002] The service life of electrical products with strong electric pressure switches, such as electric pressure cookers, is often affected by the service life of the pressure switch. If there is a problem with the pressure switch, it may cause safety hazards. At present, the working principle of the electric pressure cooker is: when the electric pressure cooker starts cooking, the relay starts to pull in, and the pressure switch is turned on. At this time, the electric heating plate is energized and heated; Apply downward pressure to the pressure switch, and the pressure switch changes to the OFF state. However, due to the strong current passing through the pressure switch, the sudden disconnection of the pressure switch will cause arcing between its two c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J27/08A47J36/24A47J27/09
CPCA47J27/08A47J27/09A47J36/2483
Inventor 叶镇宝
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