Cover plate, control box and compressor

Abstract

This utility model relates to the field of compressor technology, specifically disclosing a cover plate, a control box, and a compressor. The cover plate includes a cover body and a light-transmitting plate. One of the light-transmitting plate and the cover body is provided with a groove, and the other is provided with a protrusion. Both the groove and the protrusion are annular and arranged around the opening. When the protrusion and the groove are in the insertion state, the gap between at least two insertion mating surfaces of the protrusion and the corresponding insertion mating surfaces of the groove is filled with a connecting layer. The connecting layer is used to seal the gap between at least two insertion mating surfaces of the protrusion and the corresponding insertion mating surfaces of the groove, which can effectively extend the liquid penetration path, strengthen the structural strength of the connection position between the light-transmitting plate and the cover body, reduce the damage to the connecting layer caused by the shear force formed at the connection due to the warping deformation of the cover body or the light-transmitting plate, and improve the sealing stability of the connecting layer.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a cover plate, a control box and a compressor. Background Technology

[0002] With the widespread application of compressors equipped with Enhanced Vapor Injection (EVI) technology, the reliability of their accompanying control boxes has become increasingly prominent. The core of the control box is the circuit board containing the control logic. This circuit board requires a dedicated control box for effective protection. The control box typically uses a combination of an opaque plastic cover and body, meeting IP54 protection requirements. However, when the circuit board integrates a parameter display screen, the opaque cover can obstruct equipment debugging and observation.

[0003] See Figure 1-4 In related technologies, the cover of the control box adopts a solution of setting an opening on the cover body 1' and adding a light-transmitting plate 2'. The circuit board 4' is placed in the inner cavity of the control box. The surface of the flat light-transmitting plate 2' and the inner wall of the cover body 1' can be connected by a connecting layer 33'. However, the injection-molded cover is prone to warping and deformation after demolding, resulting in uneven joint surface with the light-transmitting plate 2'. The connection position between the two is prone to cracks under deformation stress, which can lead to poor connection and water leakage. Utility Model Content

[0004] The purpose of this utility model is to provide a cover plate, a control box, and a compressor to solve the problem of water leakage caused by poor connection between the light-transmitting plate and the cover body in related technologies.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model provides a cover plate, including a cover body with an opening and a light-transmitting plate disposed at the opening. One of the light-transmitting plate and the cover body is provided with a groove, and the other is provided with a protrusion. Both the groove and the protrusion are annular and surround the opening. The protrusion is inserted into the groove. On the same cross-section, the protrusion includes at least two non-coplanar insertion-fitting surfaces, and the groove includes at least two non-coplanar insertion-fitting surfaces. When the protrusion and the groove are inserted, a connecting layer is filled in the gap between the at least two insertion-fitting surfaces of the protrusion and the corresponding insertion-fitting surfaces of the groove. The connecting layer is used to close the gap between the at least two insertion-fitting surfaces of the protrusion and the corresponding insertion-fitting surfaces of the groove.

[0007] In one embodiment, the protrusion has a convex top and two side portions located on both sides of the convex top. A molten element is disposed at the convex top of the protrusion. There is a gap between the convex top and the side portions of the protrusion and the groove. The connecting layer is a molten layer formed by filling the gap between the convex top and the side portions of the protrusion and the groove after the molten element is melted and liquefied.

[0008] In one embodiment, the two sides of the protrusion are symmetrically arranged about the convex top of the protrusion, and the distance between the two sides of the protrusion gradually decreases from the bottom of the protrusion to the convex top of the protrusion.

[0009] In one embodiment, the inner end face of the cover body is in contact with and attached to the outer end face of the light-transmitting plate, and the groove and the protrusion are provided at the contact position between the cover body and the light-transmitting plate.

[0010] In one embodiment, the light-transmitting plate is inserted into the cover body through the opening, the protrusion is inserted into the groove, and the insertion direction of the protrusion and the groove is approximately consistent with the insertion direction of the light-transmitting plate and the cover body.

[0011] In one embodiment, the inner wall of the cover body is provided with a recessed groove at the opening position, the circumferential wall surface of the light-transmitting plate is provided with an annular flange, the annular flange is inserted into the recessed groove, the groove is provided on the bottom of the recessed groove, and the protrusion is provided on the side wall of the annular flange facing the bottom of the recessed groove.

[0012] In one embodiment, the light-transmitting plate is inserted into the circumferential wall of the opening, and there is a gap between the circumferential wall of the opening and the inner wall of the opening to form a drainage gap, and the drainage gap extends to the outer wall of the light-transmitting plate.

[0013] In one embodiment, the light-transmitting plate has a top wall and a bottom wall disposed opposite to each other, the drainage gap at the top wall of the light-transmitting plate gradually decreases in height from the inside to the outside of the cover body, and the drainage gap at the bottom wall of the light-transmitting plate gradually decreases in height from the inside to the outside of the cover body.

[0014] Secondly, this utility model provides a control box, including a box body and a cover plate as described in any of the above embodiments. The cover plate is connected to the box body and surrounds a receiving cavity for placing a circuit board.

[0015] Thirdly, this utility model provides a compressor, including the cover plate or the control box in any of the above-mentioned solutions.

[0016] The beneficial effects of this utility model are as follows:

[0017] The cover plate, control box, and compressor provided by this utility model are connected and fitted by a protrusion and a groove between the cover body and the light-transmitting plate. A connecting layer is provided to seal the gap between at least two interlocking surfaces of the protrusion and the corresponding interlocking surfaces of the groove. When the light-transmitting plate is connected to the cover body, the protrusion extends into the groove and the connecting layer is set between the surface of the protrusion and the wall of the groove, which can form a connecting layer with an overall curved cross-sectional profile. The liquid needs to bypass the surface of the protrusion and the groove, which can effectively extend the liquid's penetration path and increase the difficulty of the liquid penetrating the entire sealing interface. Even if there are microscopic defects in the connecting layer, the liquid is unlikely to form a penetrating leakage channel, thus improving the sealing performance of the connecting layer at the connection between the cover body and the light-transmitting plate. Furthermore, compared to the mating of two planes, the protrusion extends into the groove to form an intervening connection, which can disperse stress in multiple directions. Even if the cover body or light-transmitting plate warps slightly as a whole, the protrusion can connect to the groove through a certain degree of deformation or slight deflection, which strengthens the structural strength of the connection between the light-transmitting plate and the cover body. It reduces the damage to the connection layer at the connection between the light-transmitting plate and the cover body caused by the shear force formed at the connection due to the warping deformation of the cover body or light-transmitting plate, and improves the sealing stability of the connection layer. This enables the box and other components using the cover to achieve the IP54 protection level more reliably and stably. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the control box structure in related technologies;

[0019] Figure 2 This is a cross-sectional view of the cover body and the light-transmitting plate in the relevant technology;

[0020] Figure 3 for Figure 2 Enlarged view of view A in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of a light-transmitting plate in related technologies;

[0022] Figure 5 This is a cross-sectional view of the connection position between the cover body and the light-transmitting plate in an embodiment of this utility model;

[0023] Figure 6 for Figure 5 A magnified view of view B in the middle;

[0024] Figure 7 This is a partial cross-sectional view of the cover body in an embodiment of this utility model;

[0025] Figure 8 This is a partial cross-sectional view of the light-transmitting plate in an embodiment of this utility model.

[0026] In the picture:

[0027] 1' Cover body; 2' Light-transmitting panel; 3' Connecting layer; 4' Circuit board;

[0028] 1. Cover body; 11. Opening; 12. Settlement tank;

[0029] 2. Light-transmitting panel; 21. Annular flange;

[0030] 31. Groove; 32. Protrusion; 33. Connecting layer; 331. Molded part; 34. Drainage gap. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] like Figures 5 to 8As shown, an embodiment of the first aspect of this utility model provides a cover plate, which includes a cover body 1 with an opening 11 and a light-transmitting plate 2 disposed at the opening 11. One of the light-transmitting plate 2 and the cover body 1 is provided with a groove 31, and the other is provided with a protrusion 32. Both the groove 31 and the protrusion 32 are annular and arranged around the opening 11. The protrusion 32 is inserted into the groove 31. On the same cross-section, the protrusion 32 includes at least two non-coplanar insertion mating surfaces, and the groove 31 includes at least two non-coplanar insertion mating surfaces. When the protrusion 32 and the groove 31 are inserted, the gap between the at least two insertion mating surfaces of the protrusion 32 and the corresponding insertion mating surfaces of the groove 31 is filled with a connecting layer 33. The connecting layer 33 is used to close the gap between the at least two insertion mating surfaces of the protrusion 32 and the corresponding insertion mating surfaces of the groove 31.

[0036] With this configuration, when the light-transmitting plate 2 is connected to the cover body 1, the protrusion 32 extends into the groove 31 and the connecting layer 33 is positioned between at least two interlocking surfaces of the protrusion 32 and the corresponding interlocking surfaces of the groove 31. This allows the connecting layer 33 to form at least two non-coplanar connecting segments. The overall cross-sectional profile of the connecting layer 33 is curved, requiring the liquid to travel around the surfaces of the protrusion 32 and the groove 31. This effectively extends the liquid's penetration path and increases the difficulty for the liquid to penetrate the entire sealing interface. Even if there are microscopic defects in the connecting layer 33, the liquid is unlikely to form a penetrating leakage channel, thus improving the sealing performance of the connecting layer 33 at the connection between the cover body 1 and the light-transmitting plate 2. Furthermore, compared to the mating of two planes, the protrusion 32 extends into the groove 31 to form an intervening connection, which can disperse stress in multiple directions. Even if the cover body 1 or the light-transmitting plate 2 warps slightly as a whole, the protrusion 32 can connect to the groove 31 through a certain degree of deformation or slight deflection, which strengthens the structural strength of the connection position between the light-transmitting plate 2 and the cover body 1. This can effectively reduce the situation where the cover body 1 warps and deforms after injection molding and the connection between it and the light-transmitting plate 2 is poor. It also reduces the processing accuracy requirements of the cover body 1 and reduces the damage to the connection layer 33 at the connection position of the light-transmitting plate 2 and the cover body 1 caused by the shear force formed at the connection point due to the warping and deformation of the cover body 1 or the light-transmitting plate 2. This improves the sealing stability of the connection layer 33 and enables components such as the control box using the cover to achieve the IP54 protection level more reliably and stably. It also solves the problem of water leakage caused by poor connection between the light-transmitting plate and the cover body in related technologies.

[0037] In this embodiment, at least two mating surfaces of the protrusion 32 have gaps between them and the groove 31. These at least two mating surfaces can be either two adjacent mating surfaces on the cross-section of the protrusion 32 or non-adjacent mating surfaces. This allows for the sealing of the gaps between the at least two mating surfaces of the protrusion 32 and the corresponding mating surfaces of the groove 31, extending the liquid's penetration path, forming a labyrinth seal, and improving the structural strength of the connection between the two. Except for the gaps, the mating surfaces of the groove 31 and the protrusion 32 can fit together to ensure a tight seal. The cross-sectional profile of the protrusion 32 is a multi-inflection curve or a multi-inflection broken line, with inflection points at the intersection of corresponding line segments on the cross-section of any two adjacent surfaces. Similarly, the cross-sectional profile of the groove 31 is a multi-inflection curve or a multi-inflection broken line, with inflection points at the intersection of corresponding line segments on the cross-section of any two adjacent surfaces.

[0038] The connecting layer 33 includes at least two non-coplanar connecting segments. The at least two connecting segments of the connecting layer 33 can be formed on adjacent mating surfaces of the protrusion 32, and the at least two connecting segments are continuous. Alternatively, the at least two connecting segments of the connecting layer 33 can be formed on non-adjacent mating surfaces of the protrusion 32, in which case the at least two connecting segments are discontinuous.

[0039] Optionally, the protrusion 32 can be provided on the light-transmitting plate 2, and the groove 31 can be provided on the cover body 1, reducing the thickness requirement of the light-transmitting plate 2. The groove 31 can be made into a deep groove. The light-transmitting plate 2 can be, but is not limited to, a glass plate or a light-transmitting acrylic plate.

[0040] Optionally, the protrusion 32 can be provided on the cover body 1, and the groove 31 can be provided on the light-transmitting plate 2, which is convenient for processing.

[0041] Optionally, the connecting layer 33 may be, but is not limited to, a molten layer or an adhesive layer, as long as it can connect and seal the protrusion 32 and the groove 31.

[0042] like Figures 5 to 8As shown, in some embodiments, the protrusion 32 has a convex top and two side portions located on both sides of the convex top. The convex top and the two side portions on both sides of the convex top are the mating surfaces of the protrusion 32. A molten element 331 is provided at the convex top position of the protrusion 32. There is a gap between the convex top and side portions of the protrusion 32 and the wall surface of the groove 31 to facilitate the flow space for the molten element 331 after melting and liquefaction. The connecting layer 33 is a molten layer formed between the convex top and side portions of the protrusion 32 and the wall surface of the groove 31 after the molten element 331 melts and liquefies. With this configuration, the molten element 331 is located at the convex top position of the protrusion 32. After melting and liquefaction, the molten element 331 can extend from the convex top to the side portions and other wall surfaces, which facilitates the formation of a molten layer with an overall curved cross-sectional profile. It also provides more sufficient filling between the protrusion 32 and the groove 31, reducing the overflow of the molten element 331 material after melting and liquefaction.

[0043] Optionally, the molten layer is disposed on the top of the protrusion 32 and on the side of either side of the protrusion 32, that is, the molten layer can form an "L" shaped bend structure in cross-section. Compared with the connection of two planes, the molten layer can effectively extend the penetration path of the liquid.

[0044] Optionally, the molten layer is disposed on the top of the protrusion 32 and on both sides of the protrusion 32, that is, the molten layer can form a U-shaped bending structure in cross-section, which can further extend the penetration path of the liquid. Moreover, the molten layer wraps around the top and sides of the protrusion 32, which can increase the connection area and structural strength between the protrusion 32 and the groove 31, and improve the connection stability.

[0045] In some other embodiments, the molten layer is disposed on two sides of the protrusion 32, that is, the molten layer can be segmented to form a multi-point seal, which facilitates expanding the coverage of the molten layer on the entire surface of the protrusion 32.

[0046] In some embodiments, the molten layer is a welded molten layer, and the surface of the protrusion 32 and the wall of the groove 31 are welded together by the molten layer. That is, the molten layer can be processed by welding methods such as ultrasonic welding or laser welding. The heat-affected zone is small, the precision is high, the speed is fast, and the requirements for the cross-sectional dimensions of the protrusion 32 and the groove 31 are reduced, making the processing convenient.

[0047] like Figures 5 to 8As shown, in some embodiments, the two sides of the protrusion 32 are symmetrically arranged about the top of the protrusion 32, and the distance between the two sides of the protrusion 32 gradually decreases from the bottom of the protrusion 32 to the top of the protrusion 32. This facilitates the molten material 331 to flow more evenly to the two sides of the protrusion 32 after melting and liquefaction. The sides of the protrusion 32 are inclined flow guiding slopes, which facilitates the flow of the molten liquid from the top of the protrusion 32 to the sides. Furthermore, after the molten layer solidifies, it reduces the stress concentration at the transition position between the top and sides of the protrusion 32, thereby improving the sealing stability of the molten layer.

[0048] Optionally, the cross-sectional shape of the protrusion 32 may be, but is not limited to, an isosceles trapezoid, a triangle, or a semicircle, which can be selected according to processing and usage requirements.

[0049] In some embodiments, the inner end face of the cover body 1 is in contact with the outer end face of the light-transmitting plate 2. A groove 31 and a protrusion 32 are provided at the contact position between the cover body 1 and the light-transmitting plate 2, so that the insertion direction of the protrusion 32 and the groove 31 is close to the installation direction of the light-transmitting plate 2 and the cover body 1, reducing positional interference, facilitating installation and processing, and allowing for a large area to be laid, thus reducing the requirement for the thickness of the light-transmitting plate 2.

[0050] The user is positioned outside the cover and observes the inside of the cover through the light-transmitting plate 2 at the opening 11. In this embodiment, the inner and outer end faces of the cover body 1 and the light-transmitting plate 2 can be distinguished based on their distance from the user's eye level. The distance between the inner end face of the cover body 1 and the user's eye level is greater than the distance between the outer end face of the cover body 1 and the user's eye level, making the inner end face of the cover body 1 the end face furthest from the user's eye level. Similarly, the distance between the inner end face of the light-transmitting plate 2 and the user's eye level is greater than the distance between the outer end face of the light-transmitting plate 2 and the user's eye level, making the outer end face of the light-transmitting plate 2 the end face closest to the user's eye level.

[0051] like Figures 5 to 8 As shown, in some embodiments, the light-transmitting plate 2 is inserted into the cover body 1 through the opening 11, and the protrusion 32 is inserted into the groove 31. The insertion direction of the protrusion 32 and the groove 31 is close to the insertion direction of the light-transmitting plate 2 and the cover body 1. That is, the insertion direction of the protrusion 32 and the groove 31 is consistent with the insertion direction of the light-transmitting plate 2 and the cover body 1, or there may be a slight deviation. When the light-transmitting plate 2 is inserted into the cover body 1, it facilitates the smooth connection of the protrusion 32 and the groove 31, reduces positional interference, and maintains the structural strength of the mating part of the protrusion 32 and the groove 31.

[0052] In some other embodiments, the light-transmitting plate 2 is inserted into the cover body 1 through the opening 11. The circumferential wall surface of the light-transmitting plate 2 surrounding the opening 11 is in contact with the inner wall of the cover body 1. The protrusion 32 and the groove 31 can also be set at the position where the circumferential wall surface of the light-transmitting plate 2 is in contact with the inner wall of the cover body 1. That is, the insertion direction of the protrusion 32 and the groove 31 can also intersect with the insertion direction of the light-transmitting plate 2 and the cover body 1. For example, the insertion direction of the protrusion 32 and the groove 31 can be perpendicular to the insertion direction of the light-transmitting plate 2 and the cover body 1. In this case, in order to reduce positional interference, the protrusion 32 can be designed as an elastic material so that the protrusion 32 can be inserted into the groove 31.

[0053] In some embodiments, the inner wall of the cover body 1 is provided with a recessed groove 12 at the opening 11, and the circumferential wall of the light-transmitting plate 2 is provided with an annular flange 21 at a position corresponding to the recessed groove 12. The annular flange 21 is annular along the circumference of the light-transmitting plate 2 and is inserted into the recessed groove 12. A groove 31 is provided on the bottom of the recessed groove 12, and a protrusion 32 is provided on the side wall of the annular flange 21 facing the bottom of the recessed groove 12. That is, the insertion direction of the annular flange 21 into the recessed groove 12 is the same as the insertion direction of the protrusion 32 into the groove 31. When the light-transmitting plate 2 is connected to the cover body 1, the annular flange 21 can be inserted into the recessed groove 12, and the outer circumferential surface of the annular flange 21 can abut against the groove wall of the recessed groove 12. This can position the connection between the protrusion 32 and the groove 31 and facilitate the dispersion of the connection stress at the protrusion 32 and the groove 31, thereby improving the sealing stability of the connection layer 33.

[0054] In some embodiments, the circumferential wall surface of the light-transmitting plate 2 inserted into the opening 11 has a gap with the inner wall of the opening 11 to form a drainage gap 34, and the drainage gap 34 extends to the outer wall of the light-transmitting plate 2. In this embodiment, by setting the drainage gap 34, liquid at the mating position between the circumferential wall surface of the light-transmitting plate 2 and the inner wall of the opening 11 can be drained, reducing the accumulation of rainwater and other liquids between the light-transmitting plate 2 and the inner wall of the opening 11. Moreover, the gap between the circumferential wall surface of the light-transmitting plate 2 inserted into the opening 11 and the inner wall of the opening 11 can buffer the thermal deformation between the circumferential wall surface of the light-transmitting plate 2 and the inner wall of the opening 11.

[0055] The light-transmitting plate 2 has a top wall and a bottom wall that are arranged opposite to each other. The drainage gap 34 at the top wall of the light-transmitting plate 2 gradually decreases in height from the inside to the outside of the cover body 1. That is, the height of the top wall of the light-transmitting plate 2 and the inner wall of the opening 11 corresponding to the top wall of the cover body 1 and the top wall of the light-transmitting plate 2 both gradually decrease from the inside to the outside of the cover body 1. This allows the drainage gap 34 at the top wall of the light-transmitting plate 2 to form a downward inclined flow path, which makes it easier to drain the internal liquid in the gap between the at least two interlocking surfaces of the protrusion 32 and the corresponding interlocking surfaces of the groove 31. Similarly, the drainage gap 34 at the bottom wall of the light-transmitting plate 2 can also gradually decrease in height from the inside to the outside of the cover body 1, so that the height of the bottom wall of the light-transmitting plate 2 and the inner wall of the opening 11 corresponding to the bottom wall of the cover body 1 and the light-transmitting plate 2 can both gradually decrease from the inside to the outside of the cover body 1. This allows the drainage gap 34 at the bottom wall of the light-transmitting plate 2 to form a downwardly inclined flow path, which makes it easier to drain the internal liquid from the gap between the at least two interlocking surfaces of the protrusion 32 and the corresponding interlocking surfaces of the groove 31.

[0056] It should be noted that the height of the top wall of the light-transmitting plate 2 and the inner wall of the opening 11 corresponding to the top wall of the cover body 1 can decrease at the same or different rates from the inside to the outside of the cover body 1, as long as the drainage gap 34 at the top wall of the light-transmitting plate 2 has a certain outward tilt. Similarly, the height of the bottom wall of the light-transmitting plate 2 and the inner wall of the opening 11 corresponding to the bottom wall of the cover body 1 can decrease at the same or different rates from the inside to the outside of the cover body 1, as long as the drainage gap 34 at the bottom has a certain outward tilt.

[0057] like Figure 1 and Figures 5 to 8 As shown, an embodiment of the second aspect of this utility model provides a control box, including a box body and a cover plate as described in any of the above embodiments. The cover plate is connected to the box body and forms a receiving cavity. The receiving cavity is used to place a circuit board, that is, the circuit board is placed inside the control box. The circuit board inside the control box can be observed through the light-transmitting plate 2, for example, to observe the parameters of the display screen on the circuit board. Moreover, the cover body 1 and the light-transmitting plate 2 are engaged by setting a protrusion 32 and a groove 31, and the gap between at least two insertion mating surfaces of the protrusion 32 and the corresponding insertion mating surfaces of the groove 31 is closed by a connecting layer 33. This can effectively extend the liquid penetration path and strengthen the structural strength of the connection position between the light-transmitting plate 2 and the cover body 1, thereby improving the sealing level and sealing stability of the control box for the circuit board.

[0058] Since the compressor of this utility model embodiment includes the control box described above, it has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0059] A third aspect of this utility model provides a compressor, including the cover plate of any of the above embodiments or the control box of the above embodiments. That is, by using the control box, the compressor can reduce the penetration and damage of external moisture and other liquids to the control box, reduce short circuits, and improve the stability of the compressor's electrical control system. In addition to being used on the control box, the cover plate can also be used on other components of the compressor, such as the compressor's oil circuit management module or intake / exhaust regulation module, and can be installed according to usage requirements to improve the overall waterproof performance of the compressor.

[0060] Since the compressor of this utility model embodiment includes the aforementioned cover plate or control box, it has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cover panel comprising a cover body (1) having an opening (11) and a light-transmitting plate (2) provided at the opening (11), characterized in that, One of the light-transmitting plate (2) and the cover body (1) is provided with a groove (31), and the other is provided with a protrusion (32). Both the groove (31) and the protrusion (32) are annular and surround the opening (11). The protrusion (32) is inserted into the groove (31). On the same cross-section, the protrusion (32) includes at least two non-coplanar insertion mating surfaces, and the groove (31) includes at least two non-coplanar insertion mating surfaces. When the protrusion (32) and the groove (31) are inserted, the gap between the at least two insertion mating surfaces of the protrusion (32) and the corresponding insertion mating surfaces of the groove (31) is filled with a connecting layer (33). The connecting layer (33) is used to seal the gap between the at least two insertion mating surfaces of the protrusion (32) and the corresponding insertion mating surfaces of the groove (31).

2. The cover sheet of claim 1, wherein The protrusion (32) has a convex top and two side portions located on both sides of the convex top. A molten element (331) is provided at the convex top position of the protrusion (32). There is a gap between the convex top and side portions of the protrusion (32) and the groove (31). The connecting layer (33) is a molten layer formed by filling the gap between the convex top and side portions of the protrusion (32) and the groove (31) after the molten element (331) is melted and liquefied.

3. The cover sheet of claim 2, wherein, The two sides of the protrusion (32) are symmetrically arranged about the top of the protrusion (32), and the distance between the two sides of the protrusion (32) gradually decreases from the bottom of the protrusion (32) to the top of the protrusion (32).

4. The cover plate according to claim 1, characterized in that, The inner end face of the cover body (1) is in contact with the outer end face of the light-transmitting plate (2), and the groove (31) and the protrusion (32) are provided at the contact position between the cover body (1) and the light-transmitting plate (2).

5. The cover plate according to any one of claims 1-4, characterized in that, The light-transmitting plate (2) is inserted into the cover body (1) through the opening (11), the protrusion (32) is inserted into the groove (31), and the insertion direction of the protrusion (32) and the groove (31) is close to the insertion direction of the light-transmitting plate (2) and the cover body (1).

6. The cover plate according to claim 5, characterized in that, The inner wall of the cover body (1) is provided with a recessed groove (12) at the opening (11) position. The circumferential wall of the light-transmitting plate (2) is provided with an annular flange (21). The annular flange (21) is inserted into the recessed groove (12). The groove (31) is provided on the bottom of the recessed groove (12). The protrusion (32) is provided on the side wall of the annular flange (21) facing the bottom of the recessed groove (12).

7. The cover plate according to claim 5, characterized in that, The light-transmitting plate (2) is inserted into the circumferential wall surface of the opening (11) and there is a gap between the circumferential wall surface and the inner wall of the opening (11) to form a drainage gap (34), and the drainage gap (34) extends to the outer wall of the light-transmitting plate (2).

8. The cover plate according to claim 7, characterized in that, The light-transmitting plate (2) has a top wall and a bottom wall arranged opposite to each other. The drainage gap (34) at the top wall of the light-transmitting plate (2) gradually decreases in height from the inside to the outside of the cover body (1). The drainage gap (34) at the bottom wall of the light-transmitting plate (2) gradually decreases in height from the inside to the outside of the cover body (1).

9. A control box, characterized in that, The device includes a housing and a cover plate as described in any one of claims 1-8, wherein the cover plate is connected to the housing and surrounds a receiving cavity for placing a circuit board.

10. A compressor, characterized in that, Includes the cover plate as described in any one of claims 1-8 or the control box as described in claim 9.

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