Clamping ring with air duct and magnetron

Abstract

The utility model discloses a clamping ring with an air duct and a magnetron, and relates to the technical field of vacuum electronic devices.The clamping ring with the air duct comprises a clamping ring body, an electrical annular face making contact with a to-be-clamped workpiece is arranged in the clamping ring body, clamping connection structures are arranged at the two ends of the clamping ring body, and an electrical connection structure is arranged on one side of the clamping ring body; an annular flange extending downwards is arranged on the bottom face of the clamping ring body. A ventilation cavity is defined by the inner side face of the annular flange. The diameter of the inner side surface of the annular flange is greater than that of the electrical annular surface; an air inlet structure is arranged on the peripheral surface of the annular flange; the air inlet structure is provided with an air duct communicating the ventilation cavity with the outside. The clamping ring can carry out air cooling heat dissipation on the insulating ceramic while meeting the electrical connection requirement, the phenomenon that the filament loop insulating ceramic is damaged due to the high temperature of the filament is effectively relieved or eliminated, and therefore the overall performance of the magnetron is improved, and the service life of the magnetron is prolonged.

Description

Technical Field

[0001] This application relates to the field of vacuum electronic device technology, and in particular to a clamping ring and magnetron with an air duct. Background Technology

[0002] A magnetron is a vacuum electronic device used to generate microwave energy and has important applications in microwave ovens, radar, industrial heating and other fields.

[0003] The magnetron filament clamp is a crucial component of the magnetron, used to secure the filament post and provide auxiliary electrical connections, such as... Figure 1 As shown, after the current magnetron filament clamp (100) is installed on the magnetron, there is only an electrical connection structure (200). When the magnetron is working, the filament temperature is very high. At the same time, through heat conduction and heat radiation, the surface of the filament circuit insulation ceramic will have a very high temperature, which can easily cause the filament circuit insulation ceramic to crack and be damaged, thus reducing the life of the magnetron.

[0004] Therefore, there is an urgent need to provide a solution to address the above problems. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a clamping ring and magnetron with an air duct, which can alleviate or eliminate the damage to the insulating ceramic of the filament circuit caused by high filament temperature, thereby improving the overall performance and lifespan of the magnetron.

[0006] To achieve the above technical objectives, this application provides a clamping ring with an air duct, including a clamping ring body, wherein the clamping ring body has an electrical annular surface that contacts the workpiece to be clamped, the two ends of the clamping ring body are provided with clamping connection structures, and one side of the clamping ring body is provided with an electrical connection structure;

[0007] The bottom surface of the clamping ring body is provided with a downwardly extending annular flange;

[0008] The inner surface of the annular flange forms a ventilation cavity;

[0009] The diameter of the inner side of the annular flange is larger than the diameter of the electrical annular surface;

[0010] The outer peripheral surface of the annular flange is provided with an air inlet structure;

[0011] The air intake structure is provided with an air duct connecting the ventilation cavity to the outside.

[0012] Furthermore, the outer peripheral surface of the annular flange is flush with the outer peripheral surface of the clamping ring body.

[0013] Furthermore, the annular flange is integrally formed or welded to the clamping ring body.

[0014] Furthermore, the air intake structure is an air intake duct;

[0015] A connecting hole is provided on the outer peripheral surface of the annular flange;

[0016] The air inlet pipe is connected to the connecting hole for conduction;

[0017] The pipes inside the air inlet pipe form the air duct.

[0018] Furthermore, the air intake structure is integrally formed or welded to the annular flange.

[0019] Furthermore, the clamping connection structure is a protrusion structure, and each of them is provided with a through hole that penetrates itself.

[0020] Furthermore, the clamping connection structure is integrally formed or welded to the clamping ring body.

[0021] Furthermore, the electrical connection structure is a bump structure with at least two wiring screw holes;

[0022] At least two of the aforementioned wiring screw holes are spaced apart.

[0023] Furthermore, the electrical connection structure is integrally formed or welded to the clamping ring body.

[0024] This application also discloses a magnetron, including a magnetron body, a filament post, a filament circuit insulating ceramic, and the aforementioned clamping ring with an air duct;

[0025] The filament post is fixed to the top of the magnetron body via the filament circuit insulating ceramic;

[0026] The clamping ring body with the air duct is fitted onto the filament post;

[0027] The connecting structure of the clamping ring body is provided with a fastening component for pressing the two connecting structures together so that the electrical annular surface of the clamping ring body is in close contact with the outer peripheral surface of the filament column.

[0028] As can be seen from the above technical solutions, the clamping ring with air duct designed in this application not only meets the electrical connection requirements, but also adds a ventilation cavity and an air intake structure connecting the ventilation cavity to the external air cooler. The cold air is blown into the ventilation cavity from the air duct of the air intake structure, and then blown downwards to the insulating ceramic to cool the insulating ceramic. This effectively alleviates or eliminates the damage to the insulating ceramic of the filament circuit caused by the high temperature of the filament, thereby improving the overall performance and life of the magnetron. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of an existing magnetron filament clamping ring;

[0031] Figure 2 A first perspective view of a clamping ring with an air duct provided in this application;

[0032] Figure 3 A second perspective view of a clamping ring with an air duct provided in this application;

[0033] Figure 4 This is a front view with a partial cross-section of a magnetron provided in this application;

[0034] Figure 2-4 In the middle: 1. Clamping ring body; 11. Electrical annular surface; 2. Air inlet structure; 21. Air duct; 3. Clamping connection structure; 31. Through hole; 4. Electrical connection structure; 41. Wiring screw hole; 5. Annular flange; 51. Connecting hole; 6. Magnetron body; 61. Filament post; 62. Filament circuit insulating ceramic. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0036] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0038] This application discloses a clamp with an air duct.

[0039] Please see Figure 2 as well as Figure 4 An embodiment of a clamp with an air duct provided in this application includes:

[0040] The clamping ring body 1 has an electrical annular surface 11 inside for contacting the workpiece to be clamped. Clamping connection structures 3 are provided at both ends of the clamping ring body 1, and an electrical connection structure 4 is provided on one side of the clamping ring body 1. The clamping ring body 1 can be made of copper to give it good electrical and thermal conductivity; no specific material is limited.

[0041] The key design feature of this application is that the bottom surface of the clamping ring body 1 is provided with a downwardly extending annular flange 5, the end of which is flush with the end of the clamping ring body 1 (the annular flange 5 and the clamping ring body 1 are made of the same material).

[0042] The inner surface of the annular flange 5 forms a ventilation cavity.

[0043] The diameter of the inner side of the annular flange 5 is larger than the diameter of the electrical annular surface 11. This design creates a stepped structure between the bottom surface of the clamping ring body 1 and the inner side of the annular flange 5, ensuring that there is a sufficient flow gap between the inner side of the annular flange 5 and the workpiece to be clamped (filament post 61) so that the input cold air can be delivered downward to the filament circuit insulating ceramic 62.

[0044] The outer circumferential surface of the annular flange 5 is provided with an air inlet structure 2, and the air inlet structure 2 is provided with an air duct 21 that connects the ventilation cavity to the outside (connected to the air cooler).

[0045] The clamping ring with air duct designed in this application not only meets the electrical connection requirements, but also adds a ventilation cavity and an air inlet structure 2 that connects the ventilation cavity to an external air cooler. Cold air is blown into the ventilation cavity from the air duct 21 of the air inlet structure 2, and then blown downwards to the insulating ceramic to cool the insulating ceramic. This effectively alleviates or eliminates the damage to the insulating ceramic 62 of the filament circuit caused by high filament temperature, thereby improving the overall performance and lifespan of the magnetron.

[0046] The above is an embodiment of a clamping ring with an air duct provided in this application. The following is an embodiment of a clamping ring with an air duct provided in this application. Please refer to the following for details. Figures 2 to 4 .

[0047] Based on the solution of Embodiment 1 above:

[0048] Furthermore, such as Figure 2 as well as Figure 3 As shown, the outer peripheral surface of the annular flange 5 is flush with the outer peripheral surface of the clamping ring body 1; the flush outer peripheral surface makes the stress distribution of the clamping ring more uniform when it is under force, avoiding stress concentration points caused by the flange not being flush with the outer peripheral surface of the body.

[0049] Furthermore, the annular flange 5 is integrally formed or welded to the clamping ring body 1. The preferred design is integral forming, as this method ensures a tight and secure connection between the annular flange 5 and the clamping ring body 1. Compared to other detachable or loosely connected methods, this significantly enhances the overall mechanical strength of the structure. Simultaneously, the stable connection structure helps maintain the overall electrical performance stability of the clamping ring.

[0050] Furthermore, such as Figure 2 as well as Figure 3 As shown, for the design of air inlet structure 2, it can be designed as an air inlet pipe, which is convenient for connecting to an external air cooler.

[0051] A connecting hole 51 is provided on the outer peripheral surface of the annular flange 5. The air inlet pipe is connected to the connecting hole 51 and the pipe inside the air inlet pipe forms an air duct 21.

[0052] Furthermore, the air intake structure 2 and the annular flange 5 are integrally formed or welded together. Preferably, they are integrally formed, as this method of integral forming or welding ensures a tight and secure connection between the air intake structure 2 and the annular flange 5.

[0053] Furthermore, the clamping connection structure 3 is a protrusion structure, and each of them is provided with a through hole 31. The through hole 31 is designed to facilitate the connection of the locking components, so as to press the two clamping connection structures 3 together, thereby realizing that the electrical annular surface 11 and the outer peripheral surface of the filament post 61 are tightly attached together, ensuring good conductive contact.

[0054] Furthermore, the clamping connection structure 3 is integrally formed or welded to the clamping ring body 1. An integrally formed design is preferred, as this method of integral forming or welding ensures a tight and secure connection between the clamping connection structure 3 and the clamping ring body 1.

[0055] Furthermore, the electrical connection structure 4 is also a protrusion structure, which has at least two wiring screw holes 41, and the at least two wiring screw holes 41 are spaced apart.

[0056] The conductive leads of the external electrical components are fixed to the electrical connection structure 4 through the wiring screw hole 41 with screws to connect to the clamp body 1 and form a complete circuit.

[0057] Furthermore, the electrical connection structure 4 is integrally formed or welded to the clamping ring body 1. An integrally formed design is preferred, as this method of integral forming or welding ensures a tight and secure connection between the electrical connection structure 4 and the clamping ring body 1.

[0058] like Figure 4 As shown, this application also discloses a magnetron, including a magnetron body 6, a filament post 61, a filament circuit insulating ceramic 62, and a clamping ring with an air duct.

[0059] The filament post 61 is fixed to the top of the magnetron body 6 via the filament circuit insulating ceramic 62.

[0060] The clamping ring body 1 with the air duct is fitted onto the filament post 61; the connecting structure of the clamping ring body 1 is provided with a fastening component for pressing the two connecting structures together so that the electrical annular surface 11 of the clamping ring body 1 is in close contact with the outer peripheral surface of the filament post 61.

[0061] The foregoing has provided a detailed description of a clamping ring with an air duct and a magnetron provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A clamping ring with an air duct, comprising a clamping ring body (1), wherein the clamping ring body (1) is provided with an electrical annular surface (11) for contacting the workpiece to be clamped, and clamping connection structures (3) are provided at both ends of the clamping ring body (1), and an electrical connection structure (4) is provided on one side of the clamping ring body (1). Its features are, The bottom surface of the clamping ring body (1) is provided with a downwardly extending annular flange (5). The inner surface of the annular flange (5) forms a ventilation cavity; The diameter of the inner side of the annular flange (5) is larger than the diameter of the electrical annular surface (11); The outer peripheral surface of the annular flange (5) is provided with an air inlet structure (2); The air intake structure (2) is provided with an air duct (21) connecting the ventilation cavity to the outside.

2. The clamping ring with an air duct according to claim 1, characterized in that, The outer peripheral surface of the annular flange (5) is flush with the outer peripheral surface of the clamping ring body (1).

3. The clamping ring with an air duct according to claim 1, characterized in that, The annular flange (5) is integrally formed or welded to the clamping ring body (1).

4. The clamping ring with an air duct according to claim 1, characterized in that, The air intake structure (2) is an air intake pipe; The annular flange (5) has a connecting hole (51) on its outer peripheral surface. The air inlet pipe is connected to the connecting hole (51); The pipes inside the air inlet pipe form the air duct (21).

5. The clamping ring with an air duct according to claim 4, characterized in that, The air intake structure (2) is integrally formed or welded to the annular flange (5).

6. The clamping ring with an air duct according to claim 1, characterized in that, The clamping connection structure (3) is a protrusion structure, and each of them has a through hole (31) that penetrates itself.

7. The clamping ring with an air duct according to claim 6, characterized in that, The clamping connection structure (3) is integrally formed or welded to the clamping ring body (1).

8. The clamping ring with an air duct according to claim 1, characterized in that, The electrical connection structure (4) is a protrusion structure with at least two wiring screw holes (41). At least two of the aforementioned wiring screw holes (41) are spaced apart.

9. The clamping ring with an air duct according to claim 1, characterized in that, The electrical connection structure (4) is integrally formed or welded to the clamp body (1).

10. A magnetron, characterized in that, It includes a magnetron body (6), a filament post (61), a filament circuit insulating ceramic (62), and a clamping ring with an air duct as described in any one of claims 1 to 9; The filament post (61) is fixed to the top of the magnetron body (6) by the filament circuit insulating ceramic (62); The clamp body (1) with the air duct is fitted onto the filament post (61); The clamping ring body (1) is provided with a fastening component on the connecting structure for pressing the two connecting structures together so that the electrical annular surface (11) of the clamping ring body (1) is in close contact with the outer peripheral surface of the filament post (61).

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