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Microwave sterilization system based on 433 MHz solid microwave sources and technology

A technology of microwave sterilization and microwave source, applied in the field of microwave sterilization system and technological process, can solve the problems of large volume of microwave source, small penetration depth, few microwave sources, etc., so as to improve heating uniformity, ensure continuity and frequency stability high degree of effect

Pending Publication Date: 2019-06-18
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the traditional 915MHz and 2450MHz microwave sterilization equipment has the problem of small penetration depth due to the short wavelength; and because the microwave source of the traditional magnetron is large in volume, the microwave source of 433MHz is not used in practical applications. also less

Method used

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  • Microwave sterilization system based on 433 MHz solid microwave sources and technology
  • Microwave sterilization system based on 433 MHz solid microwave sources and technology
  • Microwave sterilization system based on 433 MHz solid microwave sources and technology

Examples

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Effect test

Embodiment 1

[0059] Such as figure 1 As shown, a microwave sterilization system based on a 433MHz solid-state microwave source includes a decompression feeding chamber 1, a preheating chamber 2, several groups of microwave processing modules 3, an incubator 4, a cooling chamber 5 and a decompression outlet chamber connected in sequence. Material chamber 6; the microwave processing system is composed of multiple microwave processing modules 3, which can be designed to make the heat type of each heating chamber different, and the food to be sterilized can minimize the temperature difference between cold and hot spots through multiple heating chambers; Chamber 1, preheating chamber 2, microwave processing module 3, incubator 4, cooling chamber 5 and decompression discharge chamber 6 are all equipped with independent conveyor-type guide rails, which are connected to their respective motors, and the gap between the guide rails is less than The length of the loading frame is sufficient for the ...

Embodiment 2

[0071] Such as Figure 8 As shown, the decompression feed chamber 1 and the decompression discharge chamber 6 are in a lying cylindrical shape, and the feed front door 11, the feed rear door 12, the discharge front door 61, and the discharge rear door 62 are circular doors. The cylindrical box has better pressure resistance.

[0072] A microwave sterilization process based on a 433MHz solid-state microwave source, comprising the following steps:

[0073] (1) The decompression feeding chamber releases the pressure through the valve, opens the front door of the feeding, places the material on the loading rack, and fixes the chain of the loading rack and the guide rail; The material chamber is pressurized; open the rear door of the material feeding, open the high-pressure cylinder, and push the material rack onto the guide rail of the preheating chamber;

[0074] (2) Set the preheating temperature of the preheating chamber to ≤50°C to preheat the materials;

[0075] (3) Turn o...

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Abstract

The invention relates to the technical field of microwave sterilization, in particular to a microwave sterilization system based on 433 MHz solid microwave sources and a technological process. The system comprises a reduced-pressure feed chamber, a preheating chamber, a plurality of microwave treatment modules, a heat insulation box, a cooling chamber and a reduced-pressure discharge chamber whichare connected in sequence; each microwave treatment module comprises a heating cavity, a microwave heating assembly is arranged at each of the upper and lower ends of the heating cavity and comprisesa microwave source at the end part, the microwave source is connected with a horn mouth through a waveguide tube, and the lower end of the horn mouth is connected with the heating cavity through a microwave window; the microwave sources are the 433 MHz solid microwave sources. The solid microwave sources with frequency being 433 MHz are taken as the main acting part of the microwave sterilizationsystem, not only is larger penetration depth of 433 MHz microwaves utilized sufficiently, but also the occupied area is reduced, length of the waveguide tubes is reduced, controllability and stability of the system are improved, and a foundation is laid for wide application of the microwave sterilization system based on the 433 MHz solid microwave sources.

Description

technical field [0001] The invention relates to the technical field of microwave sterilization, in particular to a microwave sterilization system based on a 433MHz solid-state microwave source and a process flow. Background technique [0002] With the acceleration of the pace of modern life, the sales of traditional canned food are declining and the growth is sluggish. Takeaway food occupies a huge market because of its high freshness, good palatability and high quality. Although takeaway food is of high quality, it has a short shelf life and is difficult to store; canned food has the advantages of long shelf life and safety. How to combine the advantages of the two to improve product quality while increasing the shelf life is a problem that needs to be solved urgently. [0003] The food processed by microwave heating technology has good quality and long shelf life, but there are also problems such as uniformity and repeatability. The frequencies of most microwave heating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/01
Inventor 薛长湖薛倩倩姜晓明李兆杰常耀光薛勇徐杰王玉明唐庆娟王静凤樊艳
Owner OCEAN UNIV OF CHINA