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Microwave mode exciting and stirring heating method and heating device thereof

A mode excitation and stirring heating technology, which is applied in the field of microwave mode excitation stirring heating and microwave heating devices, can solve the problems of impossibility, inconvenient rotation or stirring, etc., to improve efficiency, increase the number of electric field modes, and improve uniformity Effect

Inactive Publication Date: 2014-07-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these measures, although the effect of rotating and stirring the heated material is better, in some microwave industrial heating processes, it is not convenient or even impossible to rotate or stir the heated material.

Method used

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  • Microwave mode exciting and stirring heating method and heating device thereof
  • Microwave mode exciting and stirring heating method and heating device thereof
  • Microwave mode exciting and stirring heating method and heating device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The structure of the microwave heating device in this example is as follows: figure 1 As shown, it includes a heating cavity, N energy feed ports, N microwave sources and a control system. The microwave energy generated by each microwave source is connected to the corresponding energy feeding port through the waveguide, and the energy is fed to the heating cavity through the energy feeding port. In this example, the control system adopts a computer control system, which is used to control the energy feeding of the heating chamber. In this example, the computer control system divides N energy feed ports into M groups, and feeds energy to the heating chamber in turn, where N and M are positive integers, N≥2, M≥2.

[0032] In this example, N energy feed ports of the microwave heating device are connected to N different microwave sources, and the computer control system can conveniently control the operation of each microwave source, thereby changing the energy feed mode. ...

Embodiment 2

[0036] figure 2 A schematic diagram of the distribution of the heating cavity and the energy feeding port of the microwave heating device of this example is shown. In this example, the heating chamber 10 is a cube, and the energy feeding port 11, the energy feeding port 12, the energy feeding port 13, and the energy feeding port 14 are respectively distributed on the four sides of the heating chamber 10, and the energy feeding port 11 is distributed on the left side of the heating chamber 10. Near the upper edge, the energy feeding ports 13 are distributed on the right side of the heating chamber close to the lower edge, the energy feeding ports 12 are distributed on the back of the heating chamber 10 near the upper edge, and the energy feeding ports 14 are distributed on the front of the heating chamber 10 near the lower edge. The energy feeding mode of the heating chamber 10 in this example can have at least the following types:

[0037] 1. The 4 energy feed ports are divi...

Embodiment 3

[0043] In this example, the heating cavity 10 is spherical, and the energy feeding ports are evenly distributed in the radial direction of the heating cavity 10, image 3 It is a schematic diagram of the distribution of the heating chamber and the energy feeding port of the heating device in this example, and a section of the heating chamber 10 is shown in the figure. This kind of heating cavity can also produce uniform heating effect by controlling the energy feeding of the energy feeding port.

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Abstract

The invention relates to the microwave heating technology, and discloses a microwave mode exciting and stirring heating method and a heating device thereof. According to the technical scheme of the microwave mode exciting and stirring heating method, N energy feedback ports are divided into M sets and feed back energy to a heating cavity in turn. The microwave mode exciting and stirring heating device comprises the heating cavity, the N energy feedback ports, a microwave source and a control system. The microwave source is connected with the energy feedback ports, and feeds back the energy to the heating cavity through the energy feedback ports. The control system is used for controlling the feedback energy of the heating cavity. The N energy feedback ports are divided into the M sets and feed back the energy to the heating cavity in turn, wherein N and M are positive integers, N is larger than or equal to 2, and M is larger than or equal to 2. According to the microwave mode exciting and stirring heating method and the heating device thereof, by switching the energy feedback ports feeding back the energy to the heating cavity, the microwave excitation modes in the heating cavity are changed, the different microwave excitation modes can excite different electric field modes in the heating cavity, namely, the number of the electric field modes in the heating cavity is increased, and the uniformity of electric field distribution and the heating uniformity are improved. The microwave mode exciting and stirring heating method and the heating device thereof are suitable for industrial heating application of microwaves.

Description

technical field [0001] The invention relates to microwave heating technology, in particular to a microwave mode excitation stirring heating method and a microwave heating device using the method. Background technique [0002] In recent years, microwave energy, as a clean and green energy, has been widely used in various fields. The main application of microwave energy in industry is for heating, such as various microwave heating devices and drying equipment. However, due to the volatility of microwave itself, it is impossible to achieve complete and uniform heating, which leads to the inevitable local overheating and even thermal runaway in the process of heating materials by microwaves, which seriously restricts the use of microwaves in the process of heating materials. Large-scale application in industry. [0003] A microwave heating device usually includes a heating cavity, an energy feed port, a microwave source and its control system, etc. The microwave source transmi...

Claims

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Application Information

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IPC IPC(8): H05B6/74
Inventor 黄卡玛杨阳陈倩陈星刘长军郭庆功闫丽萍赵翔杨晓庆
Owner SICHUAN UNIV
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