An excitation structure and microwave oven

By incorporating a portion of the waveguide horn antenna within the surface wave generating cavity, and combining it with the surface wave generating components, the problems of microwave oven space occupancy and uneven heating are solved, thereby increasing the microwave oven's usable volume ratio and improving heating uniformity.

CN121310329BActive Publication Date: 2026-07-21GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD
Filing Date
2024-07-09
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The waveguide horn antenna of a microwave oven is relatively large, which takes up space inside the microwave oven, resulting in a reduced usable volume ratio and making it difficult to solve the problem of uneven heating.

Method used

An excitation structure is adopted, in which part of the waveguide horn antenna is housed in the surface wave generating cavity. The microwave transmission channel is connected to the surface wave generating cavity through a communication port, and the surface wave generating component is used to generate uniform surface waves for heating.

Benefits of technology

While maintaining the same external shape of the microwave oven, the size of the cooking cavity has been increased, improving the usable volume ratio and enhancing the uniformity of heating.

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Abstract

The embodiment of the present application provides a kind of excitation structure and microwave oven, excitation structure includes waveguide horn antenna and surface wave generating component, waveguide horn antenna has microwave transmission channel, surface wave generating component has surface wave generating cavity, the surface wave generating component is open along the circumferential side, to make the side of the surface wave generating cavity form the communication port that communicates with outside, the microwave transmission channel is communicated with the surface wave generating cavity by the communication port, and part of the area of the waveguide horn antenna is located outside the surface wave generating cavity, another part of the area of the waveguide horn antenna is located in the surface wave generating cavity.The excitation structure of the embodiment of the present application can improve the use volume rate.
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