Microwave heating device

A microwave heating device and microwave technology, applied in the direction of microwave heating, furnace heating elements, etc., can solve the problems of uneven distribution of microwave electric field, influence on power output, damage, etc., and meet the requirements of microwave hygiene, uniformity, and safety sexual effect

CN103813498AActive Publication Date: 2014-05-21上海明光电子科技有限公司
6 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-05-21

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a microwave heating device, wherein heating and drying of the microwave heating device are performed through industrial microwaves. According to the novel microwave heating device, intercoupling of a plurality of magnetrons is avoided due to the novel microwave power transmission and energy feedback mode and accordingly the output power and efficiency of the magnetrons is improved, the service life and the reliability of the magnetrons are improved, and accordingly the production is improved, the maintenance cost of the device is reduced, and energy resources are greatly saved. The microwave heating device comprises a rotatable metal outer cylinder and a metal inner cylinder which is provided with a microwave power radiation source; a coaxial annular chamber is formed in the metal outer cylinder; a supporting tube is arranged in the annular chamber; the supporting tube is provided with at least one microwave gap antenna group; the microwave gap antenna group is formed by a plurality of microwave gap antennas which are uniformly arranged surrounding the angular direction of the supporting tube; a waveguide exciter is connected with the microwave gap antennas through a waveguide flange plate; the microwave magnetrons are inserted into the waveguide exciter.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the technical field of microwave energy application, in particular to a microwave heating device using industrial microwave heating and drying, especially suitable for high-yield material drying treatment and production, such as rice, wheat, corn and other food crops And dehydration, drying, insecticide, processing and other links of economic crops such as tea and tobacco. Background technique

[0002] In the application of industrial microwave heating technology, box-type multi-cavity microwave heating methods are usually used, such as discontinuous production methods similar to household microwave ovens, which require intermittent heating and processing furnace by furnace, and the other is tunnel-type continuous production. In the operation mode, the material enters the tunnel heating furnace or heating kiln evenly on the conveyor belt. Under the action of microwave power, the material absorbs microwave power while wa...

Examples

Embodiment Construction

[0028] As a preferred embodiment of the present invention, such as figure 1 As shown, it includes a rotatable metal outer cylinder 2 and a metal inner cylinder provided with a microwave power radiation source 1. A coaxial annular cavity 3 is formed in the outer cylinder 2, and a support tube 4 is provided in the annular cavity 3. In the support tube 4 is equipped with a microwave slot antenna group 5, and the outside of the microwave slot group 5 is provided with a hollow dust-proof sleeve 6 made of a low-loss microwave medium, and the outside of the hollow dust-proof sleeve 6 is provided with a medium spiral fin 7. The screw pitch is 30cm, and the inner wall of the outer cylinder 2 is inlaid with a medium bracket 8 with a height of 40cm and a thickness of 10mm. The hollow dust-proof sleeve 6, the medium spiral fin 7 and the medium bracket 8 are all made of low-loss microwave dielectric materials, such as polytetrafluoroethylene or polypropylene, etc., which ensure good penetr...