High-reliability microwave equipment

Abstract

The utility model relates to the technical field of microwave equipment, and discloses high-reliability microwave equipment which comprises a special-shaped microwave resonant cavity, a circular slotted waveguide is arranged at the top of the inner side of the special-shaped microwave resonant cavity, and a protective cover is fixedly connected to the top of the inner side of the special-shaped microwave resonant cavity. A circular transition waveguide is arranged at the top of the outer wall of the special-shaped microwave resonant cavity, and an octahedral straight waveguide is arranged at the top of the outer wall of the circular transition waveguide. According to the microwave unfreezing device, by changing the structure and the energy feedback mode of the microwave action cavity, on the premise that the microwave energy feedback uniformity and the penetration depth are guaranteed, the problem that the microwave energy feedback structure at the bottom of most existing microwave equipment is prone to pollution or water inflow in the microwave unfreezing process or when the cavity is cleaned, and consequently the energy feedback structure is sparking is solved; the practicability of the equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave equipment, in particular to a high-reliability microwave equipment. Background Art

[0002] The existing high-power microwave system feeding structures mainly include rectangular waveguide, horn antenna, rotating waveguide, rectangular waveguide slit antenna, etc. In practical applications, each has its own advantages and disadvantages. For example, in the field of microwave thawing, the use of rectangular waveguide, horn antenna and other feeding structures will result in poor uniformity of microwave energy distribution in the material area; while the use of rotating waveguide, rectangular waveguide slit antenna and other feeding structures, although the microwave uniformity is better, is limited by the microwave feeding direction.

[0003] In the commonly used industrial microwave frequency band, in order for microwaves to penetrate the material to be thawed, energy must be fed from the top and bottom at the same time. In this way, during the microwave thawing process or when the cavity is cleaned, the microwave energy feeding structure at the bottom is easily contaminated or water infiltrated, causing the energy feeding structure to ignite, thus affecting the normal operation of the equipment. This requires changing the energy feeding form to solve the problem of energy feeding port contamination while ensuring uniformity. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a high-reliability microwave device, aiming to improve the problem that the microwave energy feeding structure at the bottom of most of the existing microwave devices is easily contaminated or infiltrated with water during the microwave thawing process or cavity cleaning, thereby causing the energy feeding structure to ignite.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-reliability microwave device, comprising a special-shaped microwave resonant cavity, a circular crack waveguide is arranged on the inner top of the special-shaped microwave resonant cavity, a protective cover is fixedly connected to the inner top of the special-shaped microwave resonant cavity, a circular transition waveguide is arranged on the outer wall top of the special-shaped microwave resonant cavity, and an octahedral straight waveguide is arranged on the outer wall top of the circular transition waveguide.

[0006] Furthermore, a plurality of reflecting surfaces are provided inside the special-shaped microwave resonant cavity.

[0007] Furthermore, the bottom of the circular slot waveguide is closed, and the side of the circular slot waveguide is provided with a plurality of inclined long strip slot openings.

[0008] Furthermore, the elongated crack opening and the axis may form different angles including 15°, 30°, 45°, 60°, and 75°.

[0009] Furthermore, two adjusting blocks are arranged inside the circular transition waveguide, and the adjusting blocks may correspond to the center points of the long strip crack openings.

[0010] Furthermore, the shape, size and position of the mixing block can efficiently convert the circular waveguide microwave TE11 mode distribution into the TE21 mode distribution.

[0011] Furthermore, the octahedral straight waveguide connects the circular slot waveguide and the rectangular waveguide.

[0012] Furthermore, the circular slot waveguide and the circular transition waveguide may be made of a variety of materials such as aluminum, aluminum alloy, and stainless steel.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, firstly, by changing the microwave action cavity structure and the energy feeding mode, the microwave energy feeding uniformity and penetration depth are ensured, so as to prevent the bottom microwave energy feeding structure from being contaminated. This solves the problem that the bottom microwave energy feeding structure of most existing microwave equipment is easily contaminated or water-infiltrated during the microwave thawing process or cavity cleaning, thereby causing the energy feeding structure to ignite. This improves the practicability of the equipment and extends the service life of the equipment.

[0015] 2. In the utility model, different angles including 15°, 30°, 45°, 60° and 75° can be formed by the long strip slit opening and the axis, so that the circular waveguide slit antenna can efficiently radiate microwave energy to the outside and the radiated microwave field is distributed in a rotational manner with phase changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a high-reliability microwave device proposed by the utility model;

[0017] Figure 2 This is a top view of the three-dimensional structure of a high-reliability microwave device proposed by the utility model;

[0018] Figure 3 This is a side view of the three-dimensional structure of a high-reliability microwave device proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a circular crack waveguide portion of a high-reliability microwave device proposed by the utility model;

[0020] Figure 5 The utility model provides a schematic diagram of the structure of a deployment block of a high-reliability microwave device.

[0021] Legend:

[0022] 1. Special-shaped microwave resonant cavity; 2. Circular slit waveguide; 3. Protective cover; 4. Circular transition waveguide; 5. Octahedral straight waveguide; 6. Long strip slit opening; 7. Distributing block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 4 The utility model provides an embodiment: a high-reliability microwave device, comprising a special-shaped microwave resonant cavity 1, a circular crack waveguide 2 is arranged on the inner top of the special-shaped microwave resonant cavity 1, a protective cover 3 is fixedly connected to the inner top of the special-shaped microwave resonant cavity 1, a circular transition waveguide 4 is arranged on the outer wall top of the special-shaped microwave resonant cavity 1, and an octahedral straight waveguide 5 is arranged on the outer wall top of the circular transition waveguide 4;

[0025] Specifically, the microwave first passes through the rectangular waveguide and then through the octahedral straight waveguide 5 for waveguide conversion. This conversion process can convert the microwave signal from the TE10 mode distribution of the rectangular waveguide to the TE11 mode distribution of the circular waveguide. This conversion can improve the efficiency and uniformity of microwave signal transmission. Then the microwave passes through the circular transition waveguide 4, in which two adjustment blocks 7 are arranged. The function of these adjustment blocks 7 is to convert the microwave distribution from the TE11 mode of the circular waveguide to the TE21 mode distribution. This mode conversion helps to further optimize the distribution and control of the microwave signal. The microwave is further transmitted to the antenna of the circular slit waveguide 2. The bottom of the circular slit waveguide 2 is closed, and a plurality of inclined long strip slit openings 6 are evenly distributed on its side. These slit openings cause microwaves to radiate out, and the distribution is rotationally changed with the change of phase. This rotationally changed distribution is conducive to improving the uniformity of microwave radiation. The microwaves radiated laterally enter the special-shaped microwave action cavity. The special-shaped microwave action cavity is designed with multiple reflecting surfaces, which can distribute the microwave energy radiated laterally from the antenna of the top circular slit waveguide 2 more evenly above, to the side and below the material. Through such a design, problems such as other uneven energy feeding methods and the feed port being susceptible to contamination can be solved.

[0026] Reference Figure 2-Figure 5, a plurality of reflecting surfaces are provided inside the special-shaped microwave resonant cavity 1; the bottom of the circular slit waveguide 2 is closed, and a plurality of inclined long strip slit openings 6 are provided on the side of the circular slit waveguide 2; the long strip slit openings 6 can form different angles including 15°, 30°, 45°, 60°, and 75° with the axis; two adjustment blocks 7 are provided inside the circular transition waveguide 4, and the adjustment blocks 7 can correspond to the center points of the long strip slit openings 6; the shape, size, and position of the adjustment blocks 7 can efficiently convert the TE11 mode distribution of the circular waveguide microwave into the TE21 mode distribution; the octahedral straight waveguide 5 connects the circular slit waveguide 2 and the rectangular waveguide; the materials of the circular slit waveguide 2 and the circular transition waveguide 4 can be aluminum, aluminum alloy, stainless steel, and other materials;

[0027] Specifically, the bottom closure of the device helps prevent the leakage of microwave energy, while improving the stability and efficiency of the device. The presence of the inclined long strip slit opening 6 allows microwaves to enter or leave the device at different angles, which helps to optimize the directivity and efficiency of microwave transmission. The adjustment blocks 7 set inside the circular transition waveguide 4 play a key role. They can not only correspond to the center point of the inclined long strip slit opening 6, but also effectively convert the microwave TE11 mode distribution into the TE21 mode distribution. This mode conversion can improve the transmission characteristics and power transfer efficiency of microwave signals. The octahedral straight waveguide 5 connects the circular slit waveguide 2 and the rectangular waveguide, which may be used to convert microwave signals from the circular waveguide to the rectangular waveguide, or to match and transmit between waveguides. The circular slit waveguide 2 and the circular transition waveguide 4 can be made of a variety of materials such as aluminum, aluminum alloy, and stainless steel. These materials usually have good electrical conductivity, corrosion resistance, and mechanical strength, and are suitable for the manufacturing and application environment of microwave devices.

[0028] Working principle: microwaves pass through rectangular waveguides and first pass through octahedral straight waveguides 5 to convert waveguides. The microwave TE10 mode distribution in the rectangular waveguide is converted into the TE11 mode distribution in the circular waveguide. Then, the microwaves pass through the circular transition waveguide 4 to convert the waveguide. Two adjustment blocks 7 are arranged inside the circular waveguide 4 to convert the microwave distribution from the TE11 mode distribution in the circular waveguide to the TE21 mode distribution. Then, the microwaves are transmitted to the antenna of the circular slit waveguide 2. The bottom of the circular slit waveguide 2 is closed, and a plurality of inclined long strip slit openings 6 are evenly distributed on the side of the cylinder. The microwaves radiate outward through these long strip slit openings 6 on the side, and the radiated microwave field is distributed in a rotational manner with the phase change, which is beneficial to improve the uniformity of microwave radiation. The microwaves radiated laterally enter the special-shaped microwave action cavity. The special-shaped microwave action cavity is designed with multiple reflecting surfaces, which can distribute the microwave energy radiated laterally from the antenna of the top circular slit waveguide 2 more evenly above, to the side and below the material, and act on the material, thereby solving the problems of uneven feeding methods and easy contamination of the feeding port.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-reliability microwave device, comprising a special-shaped microwave resonant cavity (1), characterized in that: A circular slit waveguide (2) is arranged on the inner top of the special-shaped microwave resonant cavity (1), a protective cover (3) is fixedly connected to the inner top of the special-shaped microwave resonant cavity (1), a circular transition waveguide (4) is arranged on the outer wall top of the special-shaped microwave resonant cavity (1), and an octahedral straight waveguide (5) is arranged on the outer wall top of the circular transition waveguide (4).

2. A high-reliability microwave device according to claim 1, characterized in that: A plurality of reflecting surfaces are provided inside the special-shaped microwave resonant cavity (1).

3. A high-reliability microwave device according to claim 1, characterized in that: The bottom of the circular slit waveguide (2) is closed, and the side surface of the circular slit waveguide (2) is provided with a plurality of inclined long strip slit openings (6).

4. A high-reliability microwave device according to claim 3, characterized in that: The long strip-shaped crack opening (6) can form different angles with the axis, including 15°, 30°, 45°, 60°, and 75°.

5. The high-reliability microwave device according to claim 1, characterized in that: Two adjustment blocks (7) are arranged inside the circular transition waveguide (4), and the adjustment blocks (7) can correspond to the center points of the long strip crack openings (6).

6. A high-reliability microwave device according to claim 5, characterized in that: The shape, size and position of the mixing block (7) can efficiently convert the circular waveguide microwave TE11 mode distribution into the TE21 mode distribution.

7. The high-reliability microwave device according to claim 1, characterized in that: The octahedral straight waveguide (5) connects the circular slot waveguide (2) and the rectangular waveguide.

8. The high-reliability microwave device according to claim 1, characterized in that: The circular slit waveguide (2) and the circular transition waveguide (4) may be made of either an aluminum alloy or stainless steel.

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