Microwave window device, microwave equipment, waveguide flange and sealing ring

Abstract

The invention relates to a microwave window device, microwave equipment, a waveguide flange and a sealing ring, the microwave window device comprises a connecting part, at least one part of a first end face of the connecting part is used for being connected with an external component, and the connecting part is provided with a first groove part. The microwave window device is provided with a connecting part, and at least one part of the first end surface of the connecting part is connected with the external member, so that the microwave window device is connected with the external member. In addition, a first groove part can be arranged on the connecting part. During subsequent heating, the external component is heated to expand outwards, and the side wall structure at the edge of the first groove part deforms, so that the connecting cross section (such as a welding seam, such as an argon arc welding edge of the microwave window device) between the external component and the microwave window device can also have the same thermal expansion amount; the risk of failure or damage of a connection interface between the outer member and the microwave window device, such as the risk of cracking of a weld seam due to expansion of the outer member, is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum microwave devices, and in particular to a microwave window device, microwave equipment, a waveguide flange and a sealing ring. Background Art

[0002] Ceramic windows (such as ceramic microwave output / input windows) are essential components of various microwave devices. They serve as the "window" through which microwave energy passes from the device's internal resonant cavity to the outside world, or vice versa. In relevant structures, ceramic windows consist of a ceramic window body (such as a ceramic sheet) and a copper waveguide to which the ceramic window is mounted. The ceramic window is connected to the copper waveguide via argon arc welding. A qualified ceramic window must meet two requirements: first, after being welded to the copper mounting hardware, it must maintain a good vacuum seal within the microwave device cavity even after undergoing a high-temperature bake at 600°C; second, no sparking or ceramic cracking should occur when power passes through the ceramic window.

[0003] The current conventional welding method involves brazing a copper sealing ring to a ceramic window. This is primarily due to the relatively soft copper sealing ring, which reduces the effect of thermal expansion on the copper argon arc weld edge of the ceramic window. However, this method also presents challenges. For example, the coefficients of expansion of copper and ceramic differ. To prevent ceramic cracking, additional thermal design and component assistance are required during brazing to limit the localized expansion of the copper sealing ring. This is difficult both in terms of design size and practical operation, and the welding process is also difficult, resulting in a low success rate and reduced stability of the ceramic window. Summary of the Invention

[0004] Based on this, it is necessary to provide a microwave window device, microwave equipment, waveguide flange and sealing ring to address the problems of design size, actual operation, welding difficulty, success rate and stability of the microwave window device.

[0005] In one embodiment, the present application provides a microwave window device, comprising:

[0006] The connecting portion has at least a portion of a first end surface thereof used for connecting to an external component, and a first groove portion is provided on the connecting portion.

[0007] In one embodiment, the microwave window device further includes a sealing ring connected to the connecting portion.

[0008] In one embodiment, the sealing ring encloses a receiving cavity, and the window component is disposed in the receiving cavity.

[0009] In one embodiment, the microwave window device further includes an annular member, and the connecting portion is disposed between the annular member and the sealing ring.

[0010] In one embodiment, the connecting portion further includes a second end surface, which is located on the opposite side of the first end surface along the axial direction of the sealing ring, and the opening of the first groove portion is provided on the first end surface and / or the second end surface.

[0011] In one embodiment, at least a portion of the sealing ring is made of Kovar alloy.

[0012] In one embodiment, the sealing ring and the connecting portion are integrally formed.

[0013] In one embodiment, the first groove portion is an empty groove.

[0014] In one embodiment, the external component comprises a waveguide flange.

[0015] The present application also provides a microwave device, comprising a waveguide flange and any one of the microwave window devices described above, wherein the waveguide flange and the microwave window device are connected via a connecting portion.

[0016] The present application also provides a waveguide flange, wherein at least a portion of a third end surface of the waveguide flange is used for connection with an external component, and a second groove portion is provided on the third end surface.

[0017] In one embodiment, the present application provides a microwave window device, comprising:

[0018] a sealing ring, at least a portion of which is made of Kovar alloy, and the sealing ring encloses the accommodating cavity;

[0019] A window component is arranged in the accommodating cavity.

[0020] The present application also provides a microwave device, comprising a waveguide flange and the above-mentioned microwave window device, wherein the waveguide flange and the microwave window device are connected.

[0021] The present application also provides a sealing ring, wherein at least a portion of an end surface of the sealing ring is used to be connected to an external component, and a groove portion is provided on the end surface of the sealing ring connected to the external component.

[0022] The microwave window device described above is provided with a connecting portion, wherein at least a portion of a first end surface of the connecting portion is connected to an external component, thereby connecting the microwave window device to the external component. Furthermore, a first groove portion may be provided on the connecting portion. When subsequently heated, the external component expands outward due to the heat. The sidewall structure at the edge of the first groove portion deforms, ensuring that the interface between the external component and the microwave window device (e.g., the weld seam, such as the argon arc weld edge of the microwave window device) also experiences the same amount of thermal expansion. This reduces the risk of failure or damage to the interface between the external component and the microwave window device, such as cracking of the weld seam due to the expansion of the external component. Furthermore, the space within the first groove portion allows the sidewall of the first groove portion to deform to a certain extent without affecting or minimally affecting the sidewall opposite to the first groove portion. Thus, at least a portion of the deformation occurring near the inner side of the connecting portion (e.g., near the sealing ring) is not transmitted to the outer side of the connecting portion (e.g., near the sealing ring). Consequently, stress on the interface between the external component and the microwave window device is reduced, thereby reducing the risk of failure or damage to the interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A partial cross-sectional view of the microwave device provided in Example 1 of the present application.

[0024] Figure 2 A partial cross-sectional view of the microwave device provided in Example 2 of the present application.

[0025] Figure 3 A partial cross-sectional view of the microwave device provided in Example 3 of the present application.

[0026] Figure 4 A partial cross-sectional view of the microwave device provided in Example 4 of the present application.

[0027] Figure 5 A partial cross-sectional view of the microwave device provided in Example 5 of the present application.

[0028] In the picture:

[0029] 100. Microwave window device;

[0030] 200, waveguide flange; 210, third end face;

[0031] 300, window components;

[0032] 400, sealing ring; 410, accommodating cavity;

[0033] 500, connecting portion; 510, first end surface; 520, second end surface; 530, first connecting portion; 531, mounting groove; 540, second connecting portion;

[0034] 600, first groove portion;

[0035] 700, ring-shaped parts;

[0036] 800. Second groove portion. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0043] At present, the conventional welding method is to use copper sealing rings and braze them to ceramic sheets. The main purpose is that the copper sealing ring is relatively soft, which reduces the impact on the thermal expansion of the copper argon arc welding edge of the ceramic window. However, this method also brings difficulties. For example, the expansion coefficients of copper and ceramics are different. In order to avoid ceramic cracking, additional thermal design and component assistance are required during brazing to limit the local expansion of the copper sealing ring. This is difficult in terms of design size and actual operation, and the welding difficulty is also high, the success rate is low, and the stability of the ceramic window is also low. In addition, when other fixed connection methods such as bonding, riveting, and bolting are used to connect the sealing ring and the ceramic sheet, there is also a risk of ceramic cracking due to heat.

[0044] The present application provides a microwave window device 100, such as Figure 1 As shown, the microwave window device 100 includes a sealing ring 400 and a window member 300. The window member 300 can be disposed within the sealing ring 400. For example, the sealing ring 400 encloses a receiving cavity 410, and the window member 300 is disposed within the receiving cavity 410. At least a portion of the sealing ring 400 can be made of Kovar alloy.

[0045] In the microwave window device 100 of the present application, at least a portion of the sealing ring 400 can be made of Kovar alloy. In one embodiment, the thermal expansion coefficient of the sealing ring 400 made of Kovar alloy is similar to that of the window member 300 made of ceramic or similar materials. In other words, the sealing ring 400 and the window member 300 expand and contract to similar degrees. During the subsequent heating process of the microwave device, the sealing ring 400 and the window member 300 are melt-sealed at high temperature. As the temperature rises, the sealing ring 400 and the window member 300 expand synchronously. During the cooling process, the sealing ring 400 and the window member 300 contract synchronously, avoiding cracks or gaps in the seal caused by the difference in thermal expansion coefficients, thereby forming a good airtight seal. This ensures that the internal vacuum of the device using the microwave window device 100 can be maintained during long-term use, thereby ensuring normal function of the device.

[0046] In other embodiments, at least a portion of the sealing ring 400 is made of Invar alloy, so that the thermal expansion coefficient of the sealing ring 400 is close to the thermal expansion coefficient of the window member 300 .

[0047] In some embodiments, as Figure 1 As shown, the microwave window device 100 includes a connecting portion 500, to which a sealing ring 400 can be connected. At least a portion of a first end surface 510 of the connecting portion 500 is configured to connect to an external component. The connection of the sealing ring 400 to the connecting portion 500 establishes a connection between the window component 300 and the connecting portion 500. At least a portion of the first end surface 510 of the connecting portion 500 is configured to connect to an external component. This connection further defines the relative position between the window component 300 and the external component (e.g., the waveguide flange 200, a rectangular waveguide, etc.).

[0048] The present application also provides a microwave window device 100, such as Figures 2 to 5 As shown, the microwave window device 100 includes a connecting portion 500 , at least a portion of a first end surface 510 of the connecting portion 500 is used to connect with an external component, and a first groove portion 600 is provided on the connecting portion 500 .

[0049] The microwave window device 100 is provided with a connecting portion 500, wherein at least a portion of a first end surface 510 of the connecting portion 500 is connected to an external component, thereby connecting the microwave window device 100 to the external component. Furthermore, a first groove 600 may be provided on the connecting portion 500. When subsequently heated, the external component expands outward due to the heat, and the sidewall structure at the edge of the first groove 600 deforms to ensure that the connection interface between the external component and the microwave window device 100 (e.g., the weld, such as the argon arc weld edge of the microwave window device 100) also has the same thermal expansion. This reduces the risk of failure or damage to the connection interface between the external component and the microwave window device 100, such as the risk of cracking of the weld due to the expansion of the external component.

[0050] Furthermore, the space within the first groove portion 600 allows the sidewall of the first groove portion 600 to deform to a certain extent without affecting, or only minimally affecting, the sidewall opposite to the first groove portion 600. Thus, at least a portion of the deformation occurring near the inner side of the connecting portion 500 (e.g., near the sealing ring 400) is not transmitted to the outer side of the connecting portion 500 (e.g., near the sealing ring 400). Consequently, the stress applied to the interface between the external component and the microwave window device 100 can be reduced, thereby reducing the risk of failure or damage to the interface.

[0051] In one embodiment, the first groove portion 600 is hollow. For example, no components (e.g., connectors, fasteners, such as pins or screws) are positioned or accommodated within the first groove portion 600. By providing the first groove portion 600 as a hollow groove, stress or strain (e.g., stress or strain caused by thermal expansion) generated on one side of the first groove portion 600 (e.g., the side near the annular member 700 or the side near the sealing ring 400) along the radial direction (e.g., perpendicular to the axis A) of the microwave window device 100 at or near the interface between the connecting portion 500 and the external component is minimized from affecting the other side (e.g., the side near the sealing ring 400 or the side near the annular member 700). By leaving the first groove portion 600 hollow and without any components positioned or accommodated, any components within the first groove portion 600 are prevented from abutting against the groove wall of the first groove portion 600, thereby affecting deformation of the first groove portion 600 and thereby reducing the first groove portion 600's ability to absorb stress or deformation.

[0052] In a specific embodiment, the first groove portion 600 is a groove filled with a buffer material, for example, the first groove portion 600 can be filled with foamed aluminum, rubber, etc.

[0053] In one embodiment, Figures 1 to 5As shown, the external component may include a waveguide flange 200. When connected to the microwave window device 100, the waveguide flange 200 forms a key component of the microwave device. For example, the waveguide flange 200 and the microwave window device 100 may be connected to form an energy coupling structure, a directional coupler, or a segmented structure coupler. However, this is not limiting and the external component may also include other components, such as a rectangular waveguide, and the specific choice can be made based on actual needs.

[0054] In one embodiment, Figures 1 to 5 As shown, the microwave window device 100 further includes a sealing ring 400. The sealing ring 400 can be connected to the connecting portion 500. By providing the sealing ring 400, the window component 300 is disposed within the sealing ring 400, and the sealing ring 400 is connected to the connecting portion 500, thereby achieving a connection between the window component 300 and the connecting portion 500. At least a portion of the first end surface 510 of the connecting portion 500 is used to connect to an external component. This connection further defines the relative position between the window component 300 and the external component (e.g., the waveguide flange 200, a rectangular waveguide, etc.).

[0055] The window member 300 can be made of or include materials such as ceramics and glass. The material of the window member 300 can be arbitrarily selected based on actual needs. The window member 300 can be in the form of a sheet, block, or film, without limitation. As an example, if the window member 300 is a ceramic sheet, the microwave window device 100 can be referred to as a ceramic window device.

[0056] In one embodiment, the sealing ring 400 is fixedly connected to the connecting portion 500 , and the sealing ring 400 and the connecting portion 500 can be connected by any method such as integral molding, bonding, welding, riveting, and bolt connection.

[0057] In one embodiment, the sealing ring 400 and the connecting portion 500 are integrally formed. As an example of integral forming, the sealing ring 400 and the connecting portion 500 can be formed into an integral structure by injection molding, additive manufacturing, cutting, or press working. Integral forming eliminates the welding interface, avoids vacuum leaks caused by weld defects, and avoids stress concentration problems caused by inconsistent material expansion. Furthermore, integral forming eliminates the complex steps of welding and calibration in traditional processes, eliminating the need for additional thermal design and components to assist in limiting expansion.

[0058] In one specific embodiment, the connection portion 500 may be part of the sealing ring 400. Specifically, the connection portion 500 and the sealing ring 400 are the same component, physically belonging to different functional areas of the same component (e.g., the outer periphery of the sealing ring 400 extends to connect to the waveguide flange 200). There are no welded or riveted connection interfaces, thus completely preventing cracking or leakage caused by interfacial stress. Furthermore, the connection portion 500 and the sealing ring 400 are the same component, and the thermal expansion coefficients of the materials used are consistent, further minimizing the relative deformation of the sealing ring 400 and the connection portion 500.

[0059] In some embodiments, the sealing ring 400 and the connecting portion 500 are not fixedly connected, and can be connected in any manner such as overlapping, clamping, or abutting.

[0060] In this embodiment, if Figures 1 to 5 As shown, the window component 300 is disposed in the sealing ring 400 , and the connecting portion 500 is sleeved on the sealing ring 400 and connected to the sealing ring 400 , thereby fixing the relative positions of the sealing ring 400 and the connecting portion 500 .

[0061] In one embodiment, Figures 1 to 5 As shown, the sealing ring 400 can enclose a receiving cavity 410. The window member 300 can be disposed in the receiving cavity 410. The window member 300 can be connected to the cavity wall of the receiving cavity 410. The window member 300 can be disposed in the receiving cavity 410 of the sealing ring 400 and connected to the cavity wall of the receiving cavity 410, thereby achieving the connection between the window member 300 and the sealing ring 400.

[0062] It should be noted that the window member 300 and the cavity wall of the accommodating cavity 410 are connected in a fixed or non-fixed manner, wherein fixed connection methods include integral molding, bonding, welding, riveting, bolt connection, etc. Non-fixed connection methods include overlapping, clamping, abutting, etc.

[0063] In one embodiment, at least a portion of the sealing ring 400 is made of Kovar alloy. When at least a portion of the sealing ring 400 is made of Kovar alloy, the thermal expansion coefficient of the sealing ring 400 is similar to that of the window member 300. In other words, the sealing ring 400 and the window member 300 expand and contract at similar levels. During the subsequent heating process of the microwave device, the sealing ring 400 and the window member 300 are melt-sealed at high temperature. As the temperature rises, the sealing ring 400 and the window member 300 expand synchronously. During the cooling process, the sealing ring 400 and the window member 300 contract synchronously, avoiding cracks or gaps in the seal caused by the difference in thermal expansion coefficients, thereby forming a good airtight seal. This ensures that the internal vacuum of the device using the microwave window device 100 can be maintained during long-term use, thereby ensuring normal function of the device.

[0064] In one embodiment, at least a portion of the sealing ring 400 is made of Invar alloy. At least a portion of the sealing ring 400 is made of Invar alloy, so that the thermal expansion coefficient of the sealing ring 400 is close to the thermal expansion coefficient of the window member 300.

[0065] However, the sealing ring 400 is not limited to the above examples, and may also be made of various other materials according to actual needs, which is not limited here.

[0066] In the microwave window device 100 of the present application, at least a portion of the sealing ring 400 can be made of materials such as Kovar alloy and Invar alloy. By installing the window component 300 in the accommodating cavity 410 of the sealing ring 400, there is no need to use additional thermal design and auxiliary components to limit the local expansion of the sealing ring 400 during connection (such as welding). The sealing ring 400 and the window component 300 expand or contract the microwave window device synchronously. In addition, a first groove portion 600 is provided on the connecting portion 500. When the external component is subsequently heated, the external component expands outward due to the heat, and the side wall structure at the edge of the first groove portion 600 will deform itself to ensure that the connection interface between the external component and the microwave window device 100 (for example, a weld, such as the argon arc weld edge of the microwave window device 100) can also have the same thermal expansion amount, thereby reducing the risk of cracking of the connection interface between the external component and the microwave window device 100 due to the expansion of the external component and / or the microwave window device 100 itself, and further reducing the influence of the expansion coefficient of the sealing ring 400 on the connection interface between the external component and the microwave window device 100.

[0067] In a specific embodiment, the window member 300 and the sealing ring 400 can be arranged concentrically. The outer peripheral surface of the window member 300 can be connected to the inner cavity wall surface of the accommodating cavity 410, for example, by welding or bonding.

[0068] Furthermore, if Figure 1 As shown, the connecting portion 500 includes a first connecting portion 530 and a second connecting portion 540 arranged and connected along a first direction, one end of the first connecting portion 530 facing away from the second connecting portion 540 is connected to the sealing ring 400, and the other end of the second connecting portion 540 facing away from the first connecting portion 530 is connected to the waveguide flange 200.

[0069] In this embodiment, the first connection portion 530 and the second connection portion 540 are integrally formed. In other embodiments, the first connection portion 530 and the second connection portion 540 are connected by a connection structure, such as a pin, a screw, etc.

[0070] In a specific embodiment, if Figure 1As shown, a mounting groove 531 is provided at one end of the first connecting portion 530 facing away from the second connecting portion 540. The sealing ring 400 partially extends into the mounting groove 531 and is connected to the groove wall of the mounting groove 531. By providing the mounting groove 531 on the first connecting portion 530 and partially extending the sealing ring 400 into the mounting groove 531, the relative position of the connecting portion 500 and the sealing ring 400 is defined. The sealing ring 400 is connected to the groove wall of the mounting groove 531, thereby achieving the connection between the sealing ring 400 and the connecting portion 500.

[0071] In a specific embodiment, if Figure 1 and Figure 2 As shown, the connecting portion 500 has a first end surface 510 and a second end surface 520 arranged axially along the sealing ring 400. The first end surface 510 is used to mate with the external component (waveguide flange 200), and the second end surface 520 is located on the side of the first end surface 510 axially closer to the window member 300. The mounting groove 531 extends axially from the second end surface 520 toward the side closer to the first end surface 510.

[0072] The second end face 520 is located on the side of the first end face 510 close to the window component 300 in the axial direction, that is, Figure 1 and Figure 2 From the perspective of , the second end surface 520 is arranged below the first end surface 510.

[0073] In one embodiment, Figure 1 As shown, the microwave window device 100 further includes an annular member 700, and the connecting portion 500 is disposed between the annular member 700 and the sealing ring 400. By disposing the annular member 700, the annular member 700 and the sealing ring 400 are utilized to restrict movement of the connecting portion 500 along the first direction.

[0074] In a specific embodiment, if Figure 1 and Figure 2 As shown, the annular member 700 is sleeved on the connecting portion 500. The axial dimension of the first connecting portion 530 is greater than the axial dimension of the second connecting portion 540, so that a step surface is formed at the junction of the outer circumference of the first connecting portion 530 and the outer circumference of the second connecting portion 540, and the annular member 700 is fitted on the step surface. By limiting the axial dimensions of the first connecting portion 530 and the second connecting portion 540, a step surface is formed at the junction of the outer circumference of the first connecting portion 530 and the outer circumference of the second connecting portion 540. The annular member 700 is sleeved on the step surface, defining the relative position of the annular member 700 and the connecting portion 500. Moreover, the inner circumference of the annular member 700 is connected to the step surface, thereby achieving the connection between the annular member 700 and the connecting portion 500.

[0075] like Figure 1 and Figure 2As shown, a step surface is formed at the connection between the first connecting portion 530 and the second connecting portion 540 , and the annular member 700 is sleeved on the step surface, that is, the first connecting portion 530 is clamped by the annular member 700 and the sealing ring 400 .

[0076] In a specific embodiment, the annular member 700 and the connecting portion 500 are connected by welding.

[0077] Furthermore, the connecting portion 500 further includes a second end surface 520, which is located on the opposite side of the first end surface 510 along the axial direction of the sealing ring 400. The opening of the first groove portion 600 is provided on the first end surface 510 and / or the second end surface 520. There are three ways to provide the first groove portion 600 on the first end surface 510 and / or the second end surface 520 of the connecting portion 500: the first groove portion 600 is provided on the first end surface 510, the second is provided on the second end surface 520, and the third is provided on both the first end surface 510 and the second end surface 520.

[0078] It is understandable that the location of the first groove portion 600 is set according to actual operation needs, for example, Figure 2 and Figure 4 In the embodiment shown, a first groove portion 600 is provided on the first end surface 510. Figure 3 In the illustrated embodiment, a first groove portion 600 is provided on both the first end surface 510 and the second end surface 520 .

[0079] like Figures 2 to 5 As shown, the connecting portion 500 includes a first connecting portion 530 and a second connecting portion 540, and the first groove portion 600 is provided on the first connecting portion 530 and / or the second connecting portion 540. When providing the first groove portion 600, it can be selected to be provided on the first connecting portion 530 of the connecting portion 500, or on the second connecting portion 540, or on both the first connecting portion 530 and the second connecting portion 540.

[0080] It should be noted that setting the first groove portion 600 on the first connecting portion 530, that is, setting the first groove portion 600 on the end face area corresponding to the first connecting portion 530, includes a variety of setting situations. For example, the first groove portion 600 can be set on the first end face 510 area corresponding to the first connecting portion 530, or the first groove portion 600 can be set on the second end face 520 area corresponding to the first connecting portion 530, or the first groove portion 600 can be set on both the first end face 510 area and the second end face 520 area corresponding to the first connecting portion 530.

[0081] Setting the first groove portion 600 on the second connecting portion 540, that is, setting the first groove portion 600 on the end face area corresponding to the second connecting portion 540, includes a variety of setting situations. For example, you can choose to set the first groove portion 600 on the first end face 510 area corresponding to the second connecting portion 540, or you can choose to set the first groove portion 600 on the second end face 520 area corresponding to the second connecting portion 540, or you can set the first groove portion 600 on both the first end face 510 area and the second end face 520 area corresponding to the second connecting portion 540.

[0082] In a specific embodiment, Figure 2 Schematic diagram of the structure in which a first groove portion 600 is provided on the first end surface 510 region corresponding to the first connection portion 530 .

[0083] In a specific embodiment, Figure 3 It is a structural schematic diagram of providing a first groove portion 600 on both the first end surface 510 region and the second end surface 520 region corresponding to the first connecting portion 530 , and providing a first groove portion 600 on the first end surface 510 region corresponding to the second connecting portion 540 .

[0084] In a specific embodiment, Figure 4 Schematic diagram of the structure in which a first groove portion 600 is provided on the area of ​​the first end surface 510 corresponding to the second connecting portion 540 .

[0085] Furthermore, if Figures 2 to 5 As shown, the first groove portion 600 is provided between the outer circumferential surface of the sealing ring 400 and the outer circumferential surface of the connecting portion 500. By providing a mounting groove 531 on the first connecting portion 530 of the connecting portion 500, a portion of the sealing ring 400 extends into the mounting groove 531. The first groove portion 600 is provided in the area between the outer circumferential surface of the sealing ring 400 and the outer circumferential surface of the connecting portion 500, thereby reducing the risk of cracking in the weld between the waveguide flange 200 and the microwave window device 100 due to expansion of the waveguide flange 200.

[0086] In a specific embodiment, Figure 3 Schematic diagram of a structure in which a first groove portion 600 is provided between the annular member 700 and the sealing ring 400 , and between the outer circumferential surface of the annular member 700 and the outer circumferential surface of the second connecting portion 540 .

[0087] In a specific embodiment, Figure 4 Schematic diagram of a structure in which a first groove portion 600 is provided between the outer circumferential surface of the annular member 700 and the outer circumferential surface of the second connecting portion 540 .

[0088] In one embodiment, the depth direction of the first groove portion 600 is parallel to the axial direction.

[0089] In one embodiment, the first groove portion 600 is annular, and the axial direction of the first groove portion 600 is parallel to the axial direction of the sealing ring 400. The first groove portion 600 is configured in an annular shape to more evenly distribute the force on the first end surface 510 and / or the second end surface 520, thereby preventing deformation of the first end surface 510 and / or the second end surface 520 of the connecting portion 500 due to uneven force.

[0090] In this embodiment, the cross-section of the first groove portion 600 taken along a plane perpendicular to the axis A of the microwave window device 100 is a circular ring. In other embodiments, the first groove portion 600 can be configured in any shape. For example, the first groove portion 600 can be a curved ring coaxial with the axis A of the microwave window device 100, that is, the groove wall of the first groove portion 600 is a wavy surface. The cross-section of the first groove portion 600 taken along the plane containing the axis A of the microwave window device 100 can be rectangular, but is not limited to this. It can also be trapezoidal, U-shaped, triangular, etc.

[0091] In a specific embodiment, if Figure 3 As shown, a plurality of first groove portions 600 may be provided, and the plurality of first groove portions 600 are spaced apart along a first direction, the first direction being perpendicular to the axial direction of the sealing ring 400. A plurality of first groove portions 600 are provided, and at least some of the plurality of first groove portions 600 are capable of deformation. Thus, for example, the risk of cracking of the weld between the waveguide flange 200 and the microwave window device 100 due to the expansion of the waveguide flange 200 can be reduced. Furthermore, arranging the plurality of first groove portions 600 at intervals along the first direction, i.e., the plurality of first groove portions 600 are coaxially arranged, can adjust the stress distribution of the connecting portion 500. When the connecting portion 500 is subjected to external force, the plurality of first groove portions 600 can guide the stress distribution along a specific path, thereby avoiding stress concentration in a local area.

[0092] It should be noted that, as mentioned above, in a specific embodiment, a first groove portion 600 can be provided on both the first end face 510 and the second end face 520. When multiple first groove portions 600 are provided, the first groove portions 600 on the first end face 510 and the second end face 520 can be coaxially arranged and staggered with each other in the first direction.

[0093] The present application also provides a microwave device, such as Figures 1 to 5As shown, the microwave window device 100 includes a waveguide flange 200 and the microwave window device 100 described above. The waveguide flange 200 and the microwave window device 100 can be connected (for example, via a connection portion 500). The waveguide flange 200 and the window member 300 can be arranged axially along the sealing ring 400. A portion of the first end surface 510 of the connection portion 500 can be connected to the waveguide flange 200, thereby achieving a connection between the waveguide flange 200 and the microwave window device 100. As an example, the microwave device can be or include an electric vacuum device, such as a klystron, a magnetron, a traveling wave tube, a backward wave tube, a gyrotron, a virtual cathode oscillator, or a combination thereof.

[0094] The present application also provides a waveguide flange 200, such as Figure 5 As shown, at least a portion of the third end surface 210 of the waveguide flange 200 is used to connect to an external component (e.g., the microwave window device 100 described above, or other components of a microwave apparatus), and a second groove portion 800 is provided on the third end surface 210 of the waveguide flange 200. The second groove portion 800 is provided on the third end surface 210 of the waveguide flange 200, i.e., the end surface of the waveguide flange 200 axially adjacent to the connecting portion 500. When the waveguide flange 200 expands due to heat, the thin-walled structure at the edge of the second groove portion 800 on the waveguide flange 200 deforms, ensuring that the interface between the waveguide flange 200 and the microwave window device 100 (e.g., the weld, such as the argon arc weld edge of the microwave window device 100) also experiences the same thermal expansion. This reduces the risk of failure or damage to the interface between the waveguide flange 200 and the microwave window device 100, such as the risk of cracking in the weld due to the expansion of the waveguide flange 200.

[0095] In a specific embodiment, the second groove portion 800 extends from the third end surface 210 along the axial direction toward a side away from the connecting portion 500 .

[0096] In one specific embodiment, the second groove portion 800 is hollow. For example, no components (e.g., connectors, fasteners, such as pins or screws) are placed or accommodated within the second groove portion 800. By leaving the second groove portion 800 hollow, stress or strain (e.g., stress or strain caused by thermal expansion) generated along the radial direction of the waveguide flange 200 (e.g., a direction perpendicular to the axis A) on one side of the second groove portion 800 (e.g., a side near the outer edge of the waveguide flange 200 or a side near the central axis of the waveguide flange 200) at or near the interface between the waveguide flange 200 and the external component is minimized from affecting the other side (e.g., a side near the central axis of the waveguide flange 200 or a side near the outer edge of the waveguide flange 200). By leaving the second groove portion 800 hollow and without any components placed or accommodated, any components within the second groove portion 800 are prevented from abutting against the groove wall of the second groove portion 800, thereby affecting deformation of the second groove portion 800 and, consequently, impairing the second groove portion 800's ability to absorb stress or deformation.

[0097] In a specific embodiment, the second groove portion 800 is a groove filled with a buffer material. For example, the second groove portion 800 can be filled with foamed aluminum, rubber, etc.

[0098] In one embodiment, the second groove portion 800 is annular.

[0099] The shape, function and other details of the second groove portion 800 may be similar to those of the first groove portion 600 and will not be described in detail here.

[0100] In summary, if Figure 5 As shown, in order to reduce the risk of cracking of the microwave window device 100, a first groove portion 600 can be provided on the connecting portion 500, and a second groove portion 800 can be provided on the end surface of the waveguide flange 200 close to the connecting portion 500 along the axial direction.

[0101] In one embodiment, one of the connection portion 500 and the waveguide flange 200 is provided with a limit member, and the other is provided with a limit slot, into which the limit member can extend. By providing the limit member and the limit slot, when installing the waveguide flange 200 and the microwave window device 100, the connection portion 500 and the waveguide flange 200 are first aligned, so that the limit member extends into the limit slot to define the relative position of the connection portion 500 and the waveguide flange 200. The connection portion 500 and the waveguide flange 200 are then connected using a connection method (e.g., bonding, welding, etc.).

[0102] In a specific embodiment, a limiting member is provided on the connecting portion 500 , and a limiting groove is provided on the waveguide flange 200 .

[0103] In a specific embodiment, a limiting groove is provided on the connecting portion 500 , and a limiting member is provided on the waveguide flange 200 .

[0104] It is understandable that the locations of the limiting members and limiting grooves are selected according to actual operational requirements.

[0105] The present application also provides a sealing ring 400, at least a portion of the end surface of which is intended for connection to an external component. A groove (e.g., the third groove described below) is provided on the end surface of the sealing ring 400 that connects to the external component. The groove provided on the end surface of the sealing ring 400 absorbs thermal stress when the external component expands due to heat through elastic deformation of the groove's sidewalls. For example, when the external component expands due to high temperatures, the thin-walled structure at the edge of the groove adaptively deforms, aligning the thermal expansion of the connection interface (e.g., the weld) with that of the external component, thereby preventing weld cracking due to stress concentration.

[0106] In a specific embodiment, the external component is a waveguide flange 200 , and a third groove portion is provided on the end surface of the sealing ring 400 connected to the waveguide flange 200 . The third groove portion can undergo adaptive deformation to avoid weld cracking due to stress concentration.

[0107] In one specific embodiment, the third groove is empty. No components are placed or accommodated within the third groove. By leaving the third groove empty and without any components, any components within the third groove are prevented from abutting against the groove wall, thereby affecting deformation of the third groove and thus reducing the third groove's ability to absorb stress or deformation. In one specific embodiment, the third groove is filled with a buffer material. For example, the third groove can be filled with foamed aluminum, rubber, or the like.

[0108] In one embodiment, the third groove portion is annular.

[0109] The shape, function and other details of the third groove portion may be similar to those of the second groove portion 800 or the first groove portion 600 and will not be described in detail here.

[0110] By utilizing the first groove portion 600 (or the third groove portion) and / or the second groove portion 800, stress or strain (e.g., caused by thermal expansion) transmitted in a radial direction (e.g., a direction perpendicular to the axis A and radiating outward from the axis A) of the microwave window device 100 and / or the waveguide flange 200 can be absorbed by the first groove portion 600 (or the third groove portion) and / or the second groove portion 800.

[0111] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A microwave window device (100), characterized in that: include: A connecting portion (500), wherein at least a portion of a first end surface (510) of the connecting portion (500) is used for connecting to an external component, and a first groove portion (600) is provided on the connecting portion (500).

2. The microwave window device (100) according to claim 1, characterized in that It further comprises a sealing ring (400), wherein the sealing ring (400) is connected to the connecting portion (500).

3. The microwave window device (100) according to claim 2, characterized in that The sealing ring (400) encloses a receiving cavity (410), and the window component (300) is arranged in the receiving cavity (410).

4. The microwave window device (100) according to claim 2, characterized in that It also includes an annular member (700), and the connecting portion (500) is arranged between the annular member (700) and the sealing ring (400).

5. The microwave window device (100) according to claim 2, characterized in that The connecting portion (500) further includes a second end surface (520), which is located on the opposite side of the first end surface (510) along the axial direction of the sealing ring (400), and the opening of the first groove portion (600) is provided on the first end surface (510) and / or the second end surface (520).

6. The microwave window device (100) according to claim 2, characterized in that At least a portion of the sealing ring (400) is made of Kovar alloy.

7. The microwave window device (100) according to claim 2, characterized in that The sealing ring (400) and the connecting portion (500) are integrally formed.

8. The microwave window device (100) according to claim 1, characterized in that The first groove portion (600) is an empty groove.

9. The microwave window device (100) according to claim 1, characterized in that The external component includes a waveguide flange (200).

10. A microwave device, characterized in that: The invention comprises a waveguide flange (200) and the microwave window device (100) according to any one of claims 1 to 9, wherein the waveguide flange (200) and the microwave window device (100) are connected via a connecting portion (500).

11. A waveguide flange (200), characterized in that: At least a portion of the third end surface (210) of the waveguide flange (200) is used for connection with an external component, and a second groove portion (800) is provided on the third end surface (210).

12. A sealing ring (400), characterized in that: At least a portion of the end surface of the sealing ring (400) is used for connection with an external component, and a groove portion is provided on the end surface of the sealing ring (400) connected to the external component.

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