Semiconductor Microwave Oven Mode Conversion Structure
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Solution Overview
Problem
Existing semiconductor microwave ovens require a specific microwave mode (TE10) for heating, which is different from the mode (TE11) produced by semiconductor power sources, necessitating a conversion mechanism to effectively utilize semiconductor microwave technology in microwave ovens.
Innovation Solution
A microwave feeding structure that includes a semiconductor power source, a microwave feeding assembly, and a rectangular wave guide, which converts the TE11 mode output by the semiconductor power source into the TE10 mode adaptive for microwave heating, comprising components like antennas, ceramic rings, and fixing rings to facilitate efficient microwave transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a semiconductor power source is used to generate microwave, then the microwave oven can be lightweight and cost-effective, but the microwave mode (TE11) does not match the required mode (TE10) for heating
Solution Approach 1:
A mode conversion assembly is introduced as an intermediary component between the semiconductor power source and the heating chamber. This assembly includes a rectangular waveguide and a mode converter that transforms the TE11 mode microwave from the semiconductor source into TE10 mode microwave suitable for heating, thereby enabling compatibility without changing the lightweight semiconductor source itself
2Adaptability or versatility
If a mode conversion assembly is added to convert TE11 to TE10 mode, then microwave mode compatibility is achieved, but the structure becomes more complex
Solution Approach 1:
The mode conversion assembly is integrated with the existing waveguide structure of the microwave oven. The rectangular waveguide serves dual purposes: transmitting microwave energy from the semiconductor source and housing the mode conversion mechanism, thereby combining multiple functions into a unified structure that reduces overall complexity
3Reliability
If traditional magnetron and transformer are used, then reliable microwave generation is achieved, but the device becomes heavy and complex
Solution Approach 1:
The invention extracts and removes the heavy and complex components (magnetron and transformer) from the traditional microwave generation system, retaining only the essential semiconductor power source that can generate microwave directly, thereby simplifying the overall system while maintaining reliability through the semiconductor technology
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables high-efficiency, cost-effective, and lightweight semiconductor microwave ovens with a wide application range by converting TE11 mode to TE10 mode, enhancing heating efficiency and maintaining a simple structure.
Implementation Method 1
A frequency band of the semiconductor microwave technology applied in the communication field is different from that applied in microwave heating field. The microwave output by a semiconductor power source has a mode of TE11 and an impedance of 50Ω, and a microwave mode adaptive to microwave heating is TE10.
Implementation Method 2
a microwave feeding assembly connected between the semiconductor power source and the chamber body, and configured to feed the microwave generated by the semiconductor power source into the chamber body and to convert a first microwave mode output by the semiconductor power source into a second microwave mode adaptive to microwave heating
Implementation Method 3
A microwave generated by a magnetron tube 11′ is fed into a chamber body 13′ of a microwave oven via a rectangular wave guide 12′, so as to heat food in the chamber body 13′.
Data Source
AI summary
A semiconductor microwave oven and a microwave feeding structure thereof are provided. The microwave feeding structure of the semiconductor microwave oven includes: a chamber body having a door; a semiconductor power source configured to generate a microwave; and a microwave feeding assembly connected between the semiconductor power source and the chamber body, and configured to feed the microwave generated by the semiconductor power source into the chamber body and to convert a first microwave mode output by the semiconductor power source into a second microwave mode adaptive to microwave heating.