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Microwave oven having metal sub-wavelength structure

A sub-wavelength structure and microwave oven technology, which is applied in microwave heating, household appliances, household stoves/stoves, etc., can solve problems such as conflicts, achieve uniform spatial distribution, and improve uniformity

Inactive Publication Date: 2010-06-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The experimental results are in conflict with classical theoretical results

Method used

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  • Microwave oven having metal sub-wavelength structure
  • Microwave oven having metal sub-wavelength structure
  • Microwave oven having metal sub-wavelength structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Microwave ovens designed according to the subwavelength structure are designed and manufactured using the following steps:

[0034] step 1:

[0035] Simulate metal subwavelength structures to determine periodic structures and structure dimensions on dielectric plates. The material properties such as the size of the metal subwavelength structure, the loss of the metal and the dielectric plate need to be considered in the simulation. Adjust the simulation parameters so that the microwave energy can pass through the metal sub-wavelength structure on the dielectric plate with low loss, without affecting the microwave use and absorption of the load, and at the same time obtain a relatively uniform microwave field distribution.

[0036] Step 2:

[0037] According to the simulation result of step 1, the metal subwavelength structure is fabricated on the dielectric plate by using the optimized structure parameters. Metal subwavelength structures can be fabricated by methods ...

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Abstract

A microwave oven having metal sub-wavelength structure belongs to the technical field of microwave heating and relates to the electromagnetics of metal sub-wavelength structure, comprising a microwaveoven cavity, a magnetron, a wave guide, and a microwave output window; and further comprising a dielectric plate having a metal sub-wavelength structure and fixed on the wall of the microwave oven cavity in front of the microwave output window through a support. The microwave energy from the magnetron passes through the metal sub-wavelength structure on the dielectric plate and radiates in the microwave oven cavity via the microwave output window; metal surface electronics and the microwave energy can be coupled by the metal sub-wavelength structure to effectively improve the uniformity of microwave energy distribution. The invention not only can effectively improve the uniformity of microwave field distribution in the microwave oven cavity, but can effectively improve the energy transmission efficiency and reduce the cost of the microwave oven by increasing the space utilization of the microwave oven cavity on the basis of safety.

Description

technical field [0001] The invention belongs to the technical field of microwave heating, relates to metal subwavelength structure electromagnetism, and particularly relates to a microwave oven. Background technique [0002] Microwave ovens are household appliances that use electromagnetic energy in the microwave frequency band to heat food and beverages in a cavity. The principle of heating food in a microwave oven is to convert electrical energy into microwave energy through a magnetron and transmit it to the furnace cavity, and a certain microwave field is established in the furnace cavity. When the food is in the microwave field, the food will absorb the microwave energy and make the food The inside and outside are heated at the same time. The microwave oven is mainly composed of a magnetron, a waveguide, a microwave energy output window, a microwave oven cavity, a furnace door and supporting circuits. For the basic structure of the microwave oven, see figure 1 . The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C7/02H05B6/64
Inventor 吴喆曾葆青黎晓云张兆镗
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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