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Power output circuit and method of a microwave oven

A technology for power output and microwave ovens, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve problems such as easy damage and low output power of microwave ovens, and achieve the effect of improving output power

Active Publication Date: 2018-09-11
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a power output circuit and method of a microwave oven to solve the problems of low output power of the microwave oven and easy damage of multiple microwave sources working in one cavity

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  • Power output circuit and method of a microwave oven
  • Power output circuit and method of a microwave oven
  • Power output circuit and method of a microwave oven

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Embodiment Construction

[0068] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0069]figure 1 It is a schematic diagram of a power output circuit of a microwave oven provided by an embodiment of the present invention.

[0070] refer to figure 1 , The power output circuit includes a multi-stage amplifier, a circulator, a directional coupler, a reflected power absorbing circuit, a reflected power detecting circuit, an output power detecting circuit and a temperature detecting circuit.

[0071] The output end of the multistage amplifier is connected with the input end of the circulator, the output end of the circulator is connected with the input end of the directional coupler, the isolation end of the circulator is connected with the reflected power absorption circuit, and the output end of the ...

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Abstract

The invention relates to a circuit and a method for power output of a microwave oven. The circuit comprises a multiple-stage amplifier, a circulator, and a directional coupler. The multiple-stage amplifier is used to amplify an external frequency signal to obtain a first amplified frequency signal, and the first amplified frequency signal is output to the circulator. The circulator is used to send the forward power signal of the first amplified frequency signal to the directional coupler. The directional coupler is used to couple the forward power signal of the first amplified frequency signal, to obtain a first power signal and a second power signal, and send the first power signal to an external interface circuit. The circuit can improve output power of a microwave source and make power emitted by multi-path microwave source in a same microwave oven cavity not damaged.

Description

technical field [0001] The invention relates to semiconductor microwave technology, in particular to a power output circuit and method of a microwave oven. Background technique [0002] With the development of semiconductor microwave ovens, increasing the power of microwave ovens is the key to increasing the heating speed of microwave ovens. Generally, methods for increasing the power of a microwave oven include: increasing the output power of a single microwave source and increasing the number of microwave sources. For semiconductor solid-state microwave sources, due to the technical bottleneck of semiconductor amplifier tubes, the maximum power of microwave ovens can only reach 200W. Increase the number of microwave sources, because the cavity space in the microwave oven is small, when each microwave source is working, the emission power of one of the microwave sources will be absorbed by the other microwave source, resulting in damage to the other microwave source. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/66
CPCG05F1/66
Inventor 刘建伟刘民勇王轩张斐娜孙宁栾春
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD