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Microwave heating film device and system

A technology of microwave heating and thin film, which is applied in the direction of microwave heating to achieve the effects of avoiding leakage, improving heating efficiency and good heating effect

Active Publication Date: 2022-02-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, there are currently some situations where it is difficult to use microwaves to heat materials. These situations include heating lossy dielectric films attached to metal surfaces

Method used

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  • Microwave heating film device and system
  • Microwave heating film device and system
  • Microwave heating film device and system

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Experimental program
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Embodiment 1

[0034] Such as Figure 1-4 As shown, a microwave heating film device, the heating device includes a rectangular waveguide 1 and a compression ridge 2, the compression ridge 2 is arranged in the cavity 4 of the rectangular waveguide 1, and a dielectric plate 15 is arranged on the compression ridge 2 , the dielectric plate 15 is a dielectric plate with a high dielectric constant. In the present embodiment, the dielectric constant of the dielectric plate 15 is greater than 3.6. In the present embodiment, the dielectric plate 15 is a cuboid structure, preferably 99% Corundum, the compressed ridge 2 is separated from the film to be heated to form a gap 17, the electromagnetic wave passes through the gap 17 after being compressed by the compressed ridge 2, and heats the lossy dielectric film attached to the metal surface; The rectangular waveguide 1 is provided with an anti-leakage device, so as to prevent the electromagnetic waves at the gap 17 from leaking to the outside, and the ...

Embodiment 2

[0043] Considering the low energy utilization rate of the ridge waveguide heating film, multiple heating chambers can be set in a heating device to make full use of microwave energy. A film heating system, such as Figure 5 As shown, a plurality of film heating devices according to the above-mentioned embodiment are provided. In order to uniformly heat the film, generally an even number of parallel film heating devices are provided, and several rectangular waveguides 1 are connected end to end through 90° turning waveguides 21 to form an "S" shape. The heating system of the structure, several said compression ridges 2 are arranged in the same row so that the films to be heated pass through the compression ridges 2 one by one, that is, the moving direction of the film to be heated is perpendicular to the film heating device, and the films are heated from several films one by one. The heating system includes a microwave inlet 3 and a microwave receiving end 22.

[0044] The micr...

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Abstract

The invention relates to a microwave heating film device and system, the microwave heating film device comprises a rectangular waveguide and a compression ridge, the compression ridge is arranged in a cavity of the rectangular waveguide, a dielectric plate is arranged on the compression ridge, the compression ridge and a to-be-heated film are separated to form a gap, and electromagnetic waves pass through the gap after being compressed by the compression ridge; the rectangular waveguide is provided with an anti-leakage device, and the anti-leakage device absorbs / blocks leakage of electromagnetic waves in the cavity; and a ventilation structure is arranged in the rectangular waveguide, and hot air and moisture in the cavity are brought out of the cavity through the ventilation structure. The objective of the invention is to change the original electric field distribution in the waveguide through the dielectric plate arranged on the T-shaped ridge waveguide, and achieve the heating of a lossy dielectric film attached to the metal surface through microwaves.

Description

technical field [0001] The invention belongs to the technical field of microwave heating, and in particular relates to a microwave heating film device and system. Background technique [0002] With the development of science and technology, microwave energy, as a new type of high-efficiency clean energy, has been widely used in food processing, chemical industry, medicine and other fields. Compared with traditional heating methods, microwave heating has the characteristics of high efficiency and energy saving, selective heating, clean and pollution-free, etc. [0003] However, there are currently some situations where it is difficult to use microwaves to heat materials. These situations include heating lossy dielectric films attached to metal surfaces. Because of the boundary conditions of the electromagnetic field, the tangential electric field on the metal surface is theoretically zero, so the corresponding thin film attached to the metal will not be heated. In research ...

Claims

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Application Information

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IPC IPC(8): H05B6/64H05B6/76
CPCH05B6/64H05B6/76
Inventor 朱铧丞杨阳
Owner SICHUAN UNIV
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