CN203104842U - A Microwave Feeding Mechanism Used Under Vacuum - Google Patents

Abstract

The utility model provides a microwave feed mechanism used under a vacuum condition. The microwave feed mechanism comprises microwave coaxial feed, a cylindrical microwave radiation window with resonance and a microwave radiation horn. A microwave of a microwave tube feeds in the mechanism through the microwave coaxial feed, enters the atmospheric surface of the cylindrical microwave radiation window with resonance, passes through the radiation window, enters a vacuum area, and acts with materials in the vacuum area under the guidance of the microwave radiation horn. When microwave feed is carried out, the microwave field strength of either the atmospheric surface or the vacuum surface of the radiation window is lower than a microwave breakdown threshold, so as to avoid the influence of microwave breakdown on microwave feed; the cylindrical microwave radiation window with resonance realizes microwave isolation between the microwave tube and an adjacent microwave tube, so that mutual interference is avoided, and microwave feed of a number of microwave tubes can be carried out at the same time to process the materials.

Description

A Microwave Feeding Mechanism Used Under Vacuum

technical field

The utility model relates to a microwave feed-in mechanism, in particular to a microwave feed-in mechanism used under vacuum. the

Background technique

In the industrial application of microwave, vacuum and microwave feeding problems of multiple microwave tubes are involved in many cases. Vacuum involves the processing quality of microwave materials, such as microwave drying of pollen and other biological products under vacuum conditions, because the vaporization temperature of water in pollen and other biological products under vacuum conditions is very low, even close to 0 °C , so that the material can be dried at low temperature, which greatly keeps the nutritional value of biological products such as pollen unchanged. In the industrial processing of microwaves, the microwaves of a single microwave tube are difficult to meet the processing requirements. It is necessary to feed microwaves into multiple microwave tubes at the same time to process materials, but the microwaves emitted by multiple microwave tubes are likely to interfere with each other and affect work efficiency. the

Utility model content

In order to overcome the microwave vacuum feed-in problem in the microwave industry, the utility model provides a microwave feed-in mechanism used in vacuum, which can solve the microwave vacuum feed-in problem of single or multiple microwave tubes

The utility model adopts the following technical scheme: a microwave feed-in mechanism used under vacuum, including a microwave coaxial feed-in, a cylindrical microwave radiation window with resonance, and a microwave radiation horn. The microwave of the microwave tube passes through the microwave coaxial Feed into the feed-in mechanism, enter the atmospheric surface with resonant cylindrical microwave radiation window, then pass through the radiation window, enter the vacuum area, and interact with the materials in the vacuum area under the guidance of the microwave radiation horn.

In the above technical solution, the resonant cylindrical microwave radiation window is made of polytetrafluoroethylene material, so as to realize the isolation between the atmospheric surface and the vacuum surface. the

In the above technical solution, when the microwaves are fed in, the microwave field strengths on the atmospheric and vacuum surfaces of the radiation window are both lower than the microwave breakdown threshold, so as to avoid the influence of the microwave breakdown on the microwave feed-in. the

In the above technical solution, multiple microwave tubes can simultaneously feed microwaves. the

As can be seen from the structural features of the utility model, the utility model has the advantages that: due to the combined use of the resonant cylindrical microwave radiation window and the microwave radiation horn at the same time, when microwaves are fed in, no matter whether the radiation window is on the atmospheric surface or the microwave on the vacuum surface The field strength is lower than the microwave breakdown threshold, which avoids the influence of microwave breakdown on microwave feed-in; the radiation window is made of polytetrafluoroethylene material, which can easily realize the isolation between vacuum and atmosphere in terms of material strength and structure; The radiation horn cooperates with the cylindrical microwave radiation window to realize the microwave isolation of the microwave tube from adjacent microwave tubes and avoid mutual interference, so that multiple microwave tubes can simultaneously feed microwaves to process materials. the

Description of drawings

The utility model will be described by way of embodiment and with reference to the accompanying drawings, wherein:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the implementation schematic diagram of the utility model;

Among them, 1 is the microwave radiation horn, 2 is the microwave coaxial feed, and 3 is the cylindrical microwave radiation window with resonance. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further. the

As shown in Figure 1, it is a schematic structural diagram of the microwave feeding mechanism, including microwave coaxial feeding, a cylindrical microwave radiation window with resonance, and a microwave radiation horn. The microwave of the microwave tube is fed through the microwave coaxial feeding The mechanism enters the atmospheric surface with the resonant cylindrical microwave radiation window, then passes through the radiation window and enters the vacuum area, and interacts with the materials in the vacuum area under the guidance of the microwave radiation horn. the

As shown in Figure 2, it is a schematic diagram of the implementation of the utility model. In actual production, the processing of some specific materials is generally carried out in a vacuum, and microwave treatment is used. Therefore, multiple microwave feed-in mechanisms are required to emit microwaves to the vacuum chamber together. . In order to avoid the mutual influence of different microwave feed-in mechanisms feeding microwaves, in this utility model, polytetrafluoroethylene is selected as the material of the resonant cylindrical microwave radiation window, and it is easy to realize vacuum and structure in terms of material strength and structure. The atmosphere is isolated, and the microwave radiation horn cooperates with the cylindrical microwave radiation window to realize the microwave isolation of the microwave tube from adjacent microwave tubes and avoid mutual interference. the

The microwave feed-in mechanism of the utility model is suitable for single or multiple civilian microwave magnetrons (microwave frequency 2450MHz) to feed microwaves into the vacuum action area. Microwaves are fed in from the upper end of the vacuum action area, and the vacuum action area is horizontal The length or width should be greater than 20cm (1.6 times the wavelength of microwave radiation), and the height of the vacuum action zone should be greater than 30cm. Microwave radiation in such a vacuum action area can satisfy the microwave action of materials with a thickness of 5cm-10cm at the lower end of the vacuum action area. At the same time, when microwaves are fed in, the microwave field strength of the radiation window, regardless of the atmospheric surface or the vacuum surface, is lower than the microwave breakdown threshold, which avoids the impact of microwave breakdown on microwave feed-in. the

All features disclosed in this specification, except mutually exclusive features, can be combined in any way.

Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features. the

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models. the

Claims (4)

1. the microwave feed-in mechanism that uses under the vacuum, it is characterized in that: the cylinder microwave radiation window (3), the microwave radiation loudspeaker (1) that include microwave coaxial feed-in (2), band resonance, the microwave of microwave tube is by described microwave coaxial feed-in (2) feed-in structure, enter the atmosphere face of band resonance cylinder microwave radiation window (3), pass rediation aperture then, enter the region of no pressure, under the guiding of microwave radiation loudspeaker (1) with the material effect of region of no pressure.

2. the microwave feed-in mechanism that uses under a kind of vacuum according to claim 1 is characterized in that the cylinder microwave radiation window (3) of described band resonance adopts polytetrafluoroethylmaterial material, realizes the isolation of atmosphere face and suction surface.

3. the microwave feed-in mechanism that uses under a kind of vacuum according to claim 2, when it is characterized in that described microwave feed-in, the microwave field density of rediation aperture atmosphere face and suction surface all is lower than the microwave breakdown threshold, avoids microwave to puncture influence to the microwave feed-in.

4. the microwave feed-in mechanism that uses under a kind of vacuum according to claim 3 is characterized in that a plurality of microwave tubes feed-in simultaneously microwave.

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