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Microwave device for heating columnar object

A technology of microwave devices and objects, applied in microwave heating and other directions, can solve the problems of ineffective energy radiation and antenna mismatch, and achieve the effect of ensuring safety and uniform heating

Pending Publication Date: 2018-11-06
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the required antenna size and confined space are reduced to within a microwave operating wavelength, the antenna will suffer from serious mismatch and the energy cannot be effectively radiated into the closed cavity

Method used

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  • Microwave device for heating columnar object
  • Microwave device for heating columnar object
  • Microwave device for heating columnar object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as figure 1 As shown in the expanded schematic diagram of the overall structure of a microwave device for heating a columnar object, it includes a needle-type printed antenna 1 , a coaxial feed 2 , a base 3 , a base fixing member 4 , and a shielding cavity 5 . It is characterized in that: the needle-type printed antenna 1 is fixed on the base 3, and is fed by the coaxial power feed 2, and the base fixing member 4 fixes the needle-type printed antenna 1 and the base 3 in the base fixing member 4, and the to-be-heated The cylindrical object 6 is inserted and fixed along the wedge point of the needle-type printed antenna, and the shielding cavity 5 is covered on the module composed of the needle-type printed antenna 1 , the base 3 , the fixing member 4 and the cylindrical object 6 .

[0018] Further, the needle-type printed antenna 1 is composed of N (N≥3) U-shaped branches, and the width and the distance between the lines of each two branches are determined by the ty...

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PUM

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Abstract

The invention discloses a microwave device for heating a columnar object. The microwave device comprises a needle-type printing antenna, a coaxial feeder, a base, a base fixing piece and a shielding cavity; the needle-type printing antenna can be fixed on the base by the base and the fixing piece; meanwhile, the needle-type printing antenna is inserted into the center of a to-be-heated columnar object to carry out heating; leakage of an electromagnetic wave is reduced by the metal shielding cavity; and a through hole on the shielding cavity is used for carrying out temperature detection and odor release after heating. The invention relates to application of microwave heating to the industry. The microwave device has the advantage of having excellent effects of high conversion efficiency, heating uniformity, portability, safety and the like.

Description

technical field [0001] The invention belongs to the field of microwave energy application and relates to a microwave device for heating columnar objects. Background technique [0002] Microwave heating is a relatively common application in the field of microwave energy applications. Due to its high heating efficiency and high uniformity, it has been widely used in food heating, medicinal material drying, tea stir-frying, road deicing, etc. . Only in these applications, microwave energy is more radiated into open space or larger airtight metal containers through large-scale antennas such as waveguide horns and metal dipoles. When the required antenna size and confined space are reduced to within a microwave working wavelength, serious mismatch of the antenna will occur so that the energy cannot be effectively radiated into the sealed cavity. How to develop a small and compact microwave heating device for special objects to be heated, so as to ensure that microwave energy ca...

Claims

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Application Information

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IPC IPC(8): H05B6/64
CPCH05B6/64
Inventor 林先其贾小翠刘东屹于家伟刘士林李晨楠王豹王旭
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA