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Uniform radiation microwave heating method and device

A microwave heating device and microwave heating technology, applied in microwave heating, electric heating fuel, lighting and heating equipment, etc., can solve the problems of uneven microwave radiation, large defects, unevenness, etc., to improve reliability and service life, Easy maintenance and good effect

Inactive Publication Date: 2006-08-30
TSANN KUEN CHINA ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The reason for the above-mentioned uneven microwave radiation is mainly that the microwave directly enters the heating cavity through a waveguide port, and mainly diverges in one direction; although it is tried to make up for it by a turntable or a mode stirrer to make it reach a uniform state, the defect is very large
However, the recent technical solution to solve the problem of inhomogeneity is to install a rotating antenna at the bottom of the heating chamber and feed microwaves through the side waveguide port. Due to the defects of the above-mentioned rotating antenna and the direct feeding of microwaves through a waveguide port, there still exist.
Therefore, how to overcome the above defects, develop a new microwave heating method and device, and fundamentally improve the inhomogeneity of the microwave field distribution in the heating chamber of the microwave heating device is not only a problem that microwave oven manufacturers are committed to solving, but also a problem that has long puzzled other microwave ovens. Can apply to the problem that the product manufacturer is trying to solve

Method used

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Embodiment 1

[0045] An embodiment of the uniform radiation microwave heating device of the present invention is a microwave oven, its structure please refer to FIG. 2 . The microwave oven includes a heating cavity 1 , a magnetron 2 , a waveguide impedance converter 3 , a waveguide port 4 , a storage tray 5 and a coupling cavity 6 .

[0046] A magnetron 2 and an impedance transformer 3 are installed on the outside of the right vertical wall of the heating chamber 1 . The bottom surface of the heating chamber 1 is a sealing disc 101 made of ceramics or heat-resistant glass, and the gap around the sealing disc 101 is filled with silica gel 102 . Place the holding tray 5 above the sealing tray 101. The coupling cavity 6 is installed below the sealing disc 101 . The top wall of the heating chamber 1 is provided with a cylindrical converging reflective surface 103 . Of course, the top wall of the heating chamber 1 can also be made as a plane reflective surface.

[0047] The magnetron 2 is co...

Embodiment 2

[0053] The second embodiment of the microwave heating device with uniform radiation of the present invention is specially designed for the multi-functional model that combines drying, disinfection cabinet and microwave oven into one. Its structure see Figure 7 . This uniform radiation microwave heating device has a heating cavity 1, a magnetron 2, a waveguide impedance converter 3, two waveguide ports 410, 420, a storage tray 5 and two coupling cavities 610, 620; The top and bottom surfaces of the cavity 1 respectively have a combined form of an upper coupling cavity 610 and a lower coupling cavity 620 . The microwave energy generated by the magnetron 2 is respectively fed into two different coupling cavities 610 and 620 through the two waveguide ports 410 and 420 connected to the waveguide impedance converter 3; Multiple beams of uniform microwaves form multiple beams of uniform microwave radiation in two directions up and down in the heating chamber 1 .

[0054] A magnet...

Embodiment 3

[0061] The third embodiment of the uniform radiation microwave heating device of the present invention is an improved design for the previous embodiment, and its structure please refer to Figure 8 . This uniform radiation microwave heating device has a heating chamber 1, a magnetron 2, a waveguide impedance converter 3, two waveguide ports 410, 420, a storage tray 5 and three coupling cavities 610, 620, 630; The top surface, the bottom surface and the left side of the heating chamber 1 are composed of an upper coupling cavity 610 , a lower coupling cavity 620 and a left coupling cavity 630 respectively. Please compare Figure 7 with Figure 8 The difference between this embodiment and the previous embodiment is: the left side of the upper coupling cavity 610 is provided with a third curved waveguide 333, and the third curved waveguide 333 is connected to the left coupling cavity 630; the left coupling cavity 630 is located on the left side of the heating cavity 1 side. Th...

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Abstract

This invention relates to a heating method with uniform radiated microwaves and a device, in which, said method includes: a microwave device generates microwaves transmitted by a waveguide impedance converter and output to a corresponding couple cavity from the waveguide port to be reflected and scattered to output multiple microwave beams to the heating cavity uniformly from multiple couple holes on a sidewall of the couple cavity and these microwave beams enter into the heating cavity to radiate on the heated object, which greatly improves the un-uniform distribution of microwave energies in the heating cavity.

Description

technical field [0001] The present invention relates to a microwave heating method and a microwave heating device using the method, in particular to a method for converting microwaves generated by microwave source devices into A microwave heating method and device for uniformly heating food or other articles by injecting multiple beams of microwaves uniformly into a heating cavity. technical background [0002] Existing microwave heating device (see Fig. 1) comprises heating cavity 1 ', microwave source device 2 ', waveguide impedance converter 3 ', waveguide mouth 4 '; The microwave that microwave source device 2 ' produces passes through waveguide impedance converter 3 ' The transmission is output from the waveguide port 4' to the heating chamber 1'; the object to be heated in the heating chamber 1' is irradiated by microwaves, and its molecules are excited to vibrate to generate heat and be heated. [0003] Because most of the existing microwave heating devices only have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/80H05B6/64F24C7/02
Inventor 史海如邬友权林清兴
Owner TSANN KUEN CHINA ENTERPRISE
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