Microwave heating device, and controlling method thereof

Abstract

A microwave heating device and control method therefor, the microwave heating device comprising: a heating chamber (1), a microwave source (2) used to generate microwaves, a controller (6), a plurality of waveguide ports (3) located on the heating chamber (1), a plurality of radio frequency switches (4) and a plurality of radio frequency output ports (5) corresponding to the plurality of radio frequency switches (4). The plurality of radio frequency output ports (5) are respectively and correspondingly connected to the plurality of waveguide ports (3), and the plurality of radio frequency switches (4) are connected to the microwave source (2). The controller (6) controls the plurality of radio frequency switches (4) so that in each time period at least one of the radio frequency output ports (5) within the plurality of radio frequency output ports (5) outputs microwaves. The plurality of waveguide ports (3) in the present microwave heating device share a microwave source (2), and controlling is performed by the plurality of radio frequency switches (4). The present device has a simple structure, and outputting microwaves by switching different radio frequency output ports (5) increases the heating uniformity of the microwave heating device.

Description

Technical field [0001] The invention relates to the technical field of household appliances, in particular to a microwave heating device and a control method of the microwave heating device. Background technique [0002] There are many types of existing microwave ovens, such as turntable microwave ovens, flat-plate microwave ovens and so on. A common microwave oven includes a shell and a microwave generator provided with a heating chamber and an electrical room. Among them, there is a microwave launching port in the heating chamber; the microwave generator is located in the shell, communicates with the microwave launching port, and usually contains a microwave source and a waveguide box. [0003] The turntable microwave oven also includes a glass turntable structure. The food to be heated is placed on the turntable and rotates together with the turntable to achieve uniform heating. The flat-plate microwave oven also includes a microwave oven stirrer. The microwave stirrer is insta...

AI Technical Summary

Problems solved by technology

[0003] The turntable microwave oven also includes a glass turntable structure. The food to be heated is placed on the turntable and rotates with the turntable to achieve uniform heating; while the flat-panel microwave oven also includes a microwave stirrer. The microwave stirrer is located in the heating chamber and rotated by a motor. It is used to stir microwaves to facilitate the uniform distribution of microwaves, but the stirrer and motor are large in size, high in power consumption, and poor in heating uniformity

In related technologies, the uniformity of microwave distribution is usually achieved by changing the shape of the microwave stirrer, the shape of the microwave launch port, or the shape of the waveguide box, but this improvement is costly and ineffective

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