Electric control cover plate, compressor and air conditioner

Abstract

The utility model discloses an electric control cover plate, compressor and air conditioner relates to air conditioner technical field, said electric control cover plate includes the damping layer and acoustic black hole plate that are laminated, the surface of acoustic black hole plate back to the damping layer is provided with acoustic black hole structure. According to the technical scheme, the noise of the compressor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to an electronically controlled cover plate, a compressor, and an air conditioner. Background Technology

[0002] In modern automotive air conditioning systems, the compressor plays a crucial role. As consumers increasingly demand greater comfort and quietness in their vehicles, reducing compressor noise levels has become a pressing issue for automakers and parts suppliers.

[0003] The noise of a compressor mainly comes from two sources: the operating noise of the internal mechanical components and the electromagnetic noise generated by the electronic control unit. In particular, the circuit board inside the electronic control box generates electromagnetic interference during operation, which causes the electronic control cover to vibrate. This vibration not only travels through the air but also excites the cover itself to resonate, thus radiating unpleasant noise into the surrounding environment.

[0004] In traditional compressor designs, although some vibration isolation measures are taken for the electronic control cover, the effect is limited. Utility Model Content

[0005] The main purpose of this utility model is to provide an electronically controlled cover plate, a compressor, and an air conditioner, with the aim of reducing compressor noise.

[0006] To achieve the above objectives, this utility model provides an electrically controlled cover plate, which includes a damping layer and an acoustic black hole plate stacked together, wherein the surface of the acoustic black hole plate facing away from the damping layer is provided with an acoustic black hole structure.

[0007] In one embodiment, the depth of the acoustic black hole structure gradually decreases from the middle to both ends and satisfies the curve H(x) = h0 + Ax m H(x) is the thickness of the acoustic black hole plate at position x, h0 is the minimum thickness of the acoustic black hole plate, A is the curve coefficient and A≠0, x is the distance from any position of the acoustic black hole structure to the center line of the acoustic black hole structure, x satisfies 0≤x≤r1, r1 is half the width of the central cross section of the acoustic black hole structure, and m is the power exponent and m≥2.

[0008] In one embodiment, h0 ≥ 0.5 mm; and / or, the thickness of the damping layer is h2, the maximum thickness of the acoustic black hole plate is h1, and h2 ≤ h1 / 2.

[0009] In one embodiment, the center-to-center distance between any two adjacent acoustic black hole structures is d, where d > 2*r1.

[0010] In one embodiment, the acoustic black hole plate includes a first sub-plate and a second sub-plate spaced apart, the damping layer is disposed between the first sub-plate and the second sub-plate, and the acoustic black hole structure is provided on the surface of the first sub-plate and the second sub-plate facing away from the damping layer.

[0011] In one embodiment, the electronic control cover plate further includes mounting holes that penetrate the first sub-plate, the second sub-plate, and the damping layer and are spaced apart from the acoustic black hole structure.

[0012] In one embodiment, the acoustic black hole structures on the first sub-board and the second sub-board are arranged symmetrically with respect to the damping layer; or, the acoustic black hole structures on the first sub-board and the second sub-board are arranged with their centers offset.

[0013] In one embodiment, the outer contour of the acoustic black hole structure is circular or rectangular.

[0014] In one embodiment, the acoustic black hole plate and the damping layer are shape-fitted.

[0015] In one embodiment, the acoustic black hole plate is a metal plate, and / or the damping layer is made of rubber.

[0016] To achieve the above objectives, this utility model provides a compressor, which includes an electrical control box with an opening and an electrical control cover plate disposed in the opening, wherein the electrical control cover plate is the electrical control cover plate described above.

[0017] To achieve the above objectives, this utility model provides an air conditioner that includes the compressor described above.

[0018] The technical solution of this application, through the layered damping layer and acoustic black hole plate, can, on the one hand, improve the overall damping coefficient of the electronic control cover, more effectively converting mechanical vibration energy into heat energy for dissipation, reducing the vibration amplitude of the electronic control cover, and thus significantly reducing secondary noise caused by structural vibration. On the other hand, it can create an acoustic black hole effect, guiding sound waves into and reflecting them multiple times inside, ultimately converting sound wave energy into heat energy, achieving the purpose of noise reduction. It is understood that this application, through the layered structure of the damping layer and acoustic black hole plate, effectively reduces vibration and noise, improves the quietness performance of the air conditioning compressor, and is particularly suitable for vehicle air conditioning compressors requiring a high degree of quietness. It can significantly improve the noise control performance of the vehicle air conditioning system during operation, providing a quieter and more comfortable environment for drivers and passengers. Moreover, the acoustic black hole structure in this application is set on the surface of the acoustic black hole plate facing away from the damping layer. On the one hand, it can improve the thickness uniformity of the damping layer and reduce the adverse effect on the overall structural stiffness. On the other hand, it can facilitate processing, reduce the risk of air bubbles being generated during the layering process of the damping layer and the acoustic black hole structure, reduce the adverse effect on the damping coefficient of the damping layer, and further improve the vibration reduction and noise reduction effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the electrically controlled cover plate of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the acoustic black hole plate in an embodiment of the electrically controlled cover plate of this utility model;

[0022] Figure 3 This is a schematic diagram of the acoustic black hole plate in an embodiment of the electrically controlled cover plate of this utility model;

[0023] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure;

[0024] Figure 5 This is another structural schematic diagram of the acoustic black hole plate in the embodiment of the electrically controlled cover plate of this utility model;

[0025] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure;

[0026] Figure 7 This is another structural schematic diagram of the acoustic black hole plate in the embodiment of the electrically controlled cover plate of this utility model;

[0027] Figure 8 This is a schematic diagram of the acoustic black hole plate in the embodiment of the electrically controlled cover plate of this utility model. Figure 1 ;

[0028] Figure 9 This is a schematic diagram of the acoustic black hole plate in the embodiment of the electrically controlled cover plate of this utility model. Figure 2 ;

[0029] Figure 10 This is another structural schematic diagram of an embodiment of the electrically controlled cover plate of this utility model;

[0030] Figure 11 This is another structural schematic diagram of an embodiment of the electrically controlled cover plate of this utility model.

[0031] Explanation of icon numbers:

[0032] 10. Damping layer; 20. Acoustic black hole plate; 21. Acoustic black hole structure; 22. First sub-plate; 23. Second sub-plate; 30. Mounting hole;

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of the present utility model.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, in the embodiments of this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the embodiments of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0038] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by the embodiments of this utility model.

[0039] The noise of a compressor mainly comes from two sources: the operating noise of the internal mechanical components and the electromagnetic noise generated by the electronic control unit. In particular, the circuit board inside the electronic control box generates electromagnetic interference during operation, which causes the electronic control cover to vibrate. This vibration not only travels through the air but also excites the cover itself to resonate, thus radiating unpleasant noise into the surrounding environment.

[0040] In view of this, the present invention provides an electronically controlled cover plate, a compressor, and an air conditioner. Through the layered structure of a damping layer and an acoustic black hole plate, vibration and noise are effectively reduced, improving the quietness performance of the air conditioner compressor. Furthermore, the acoustic black hole structure in this application is disposed on the surface of the acoustic black hole plate facing away from the damping layer. This improves the uniformity of the damping layer thickness, reducing its adverse impact on the overall structural stiffness. It also facilitates processing, reducing the risk of air bubbles forming during the layering process of the damping layer and the acoustic black hole, mitigating the adverse effect on the damping coefficient of the damping layer, and further improving the vibration reduction and noise reduction effect.

[0041] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0042] like Figures 1 to 8As shown in the figure, this utility model embodiment proposes an electrically controlled cover plate, which includes a damping layer 10 and an acoustic black hole plate 20 stacked together. It is understood that the electrically controlled cover plate includes at least the damping layer 10 and the acoustic black hole plate 20, which are stacked together. An acoustic black hole structure 21 is provided on the surface of the acoustic black hole plate 20 facing away from the damping layer 10. Through the acoustic black hole structure 21, the thickness of the acoustic black hole plate 20 is reduced according to a predetermined power function relationship, thus forming the acoustic black hole structure 21 effect and achieving attenuation of vibration during transmission, thereby reducing the vibration or noise of the electrically controlled cover plate. In one embodiment, the acoustic black hole structure 21 is disposed in the middle or at the edge of the acoustic black hole plate 20, which is not limited here.

[0043] In the technical solution adopted in this embodiment, the layered damping layer 10 and acoustic black hole plate 20 can, on the one hand, improve the overall damping coefficient of the electronic control cover, more effectively converting mechanical vibration energy into heat energy for dissipation, reducing the vibration amplitude of the electronic control cover, and thus significantly reducing secondary noise caused by structural vibration. On the other hand, an acoustic black hole effect can be formed, which can guide sound waves into the cover and reflect them multiple times, ultimately converting sound wave energy into heat energy, thereby achieving noise reduction. It is understood that this application, through the layered structure of damping layer 10 and acoustic black hole plate 20, effectively reduces vibration and noise, improves the quietness performance of the air conditioning compressor, and is particularly suitable for vehicle air conditioning compressors that require a high degree of quietness. It can significantly improve the noise control performance of the vehicle air conditioning system during operation, providing a quieter and more comfortable environment for drivers and passengers. Furthermore, the acoustic black hole structure 21 in this application is disposed on the surface of the acoustic black hole plate 20 facing away from the damping layer 10. On the one hand, this can improve the thickness uniformity of the damping layer 10 and reduce the adverse effects on the overall structural stiffness. On the other hand, it can facilitate processing, reduce the risk of air bubbles being generated during the layering process of the damping layer 10 and the acoustic black hole structure 21, mitigate the adverse effects on the damping coefficient of the damping layer 10, and further improve the vibration reduction and noise reduction effect. It is understandable that if the acoustic black hole structure 21 is disposed on the surface of the acoustic black hole plate 20 facing the damping layer 10, air bubbles are easily generated when the damping layer 10 is injection molded. Part of the damping layer 10 will also extend into the acoustic black hole structure 21. This can easily lead to uneven thickness of the damping layer 10, reduce the overall structural stiffness and the damping coefficient of the damping layer 10, and thus adversely affect the vibration reduction and noise reduction effect of the electronic control cover plate. In this embodiment, by placing the acoustic black hole structure 21 on the surface of the acoustic black hole plate 20 facing away from the damping layer 10, it is possible to facilitate processing while reducing the adverse effects on vibration reduction and noise reduction.

[0044] In one embodiment of this utility model, reference is made to Figure 2The depth of the acoustic black hole structure 21 gradually decreases from the middle to both ends and satisfies the curve H(x)=h0+Ax m H(x) is the thickness of the acoustic black hole plate 20 at position x, h0 is the minimum thickness of the acoustic black hole plate 20, A is the curve coefficient and A≠0, x is the distance from any position of the acoustic black hole structure 21 to the center line of the acoustic black hole structure 21, x satisfies 0≤x≤r1, r1 is half the width of the acoustic black hole structure 21 along the center section of the acoustic black hole plate 20, and m is the power exponent and m≥2. It is understandable that, using the coordinates of the power-law curve H as a reference, and taking the lowest point of the acoustic black hole structure 21 (i.e., the position of minimum thickness of the acoustic black hole plate 20) as the origin of the coordinate system, with the origin located on the center line of the acoustic black hole structure 21, the distance from any position on the acoustic black hole structure 21 to its center line is x. In other words, in the corresponding region of the acoustic black hole structure 21, the thickness of the acoustic black hole plate 20 and the distance from any position on the acoustic black hole structure 21 to its center line satisfy a power-law function relationship. It can be understood that by adopting the aforementioned power-law thickness distribution pattern, the acoustic black hole plate 20 forms a thin-walled structure in the region corresponding to the acoustic black hole; the closer to the center line of the acoustic black hole structure 21, the smaller the thickness, and the thinner the structure. The acoustic black hole effect is achieved by changing the structural impedance. The wave velocity of the flexural wave decreases as the thickness of the acoustic black hole plate 20 decreases, which has a significant vibration absorption effect on the structural vibration formed by the flexural wave and can suppress the noise generated by the vibration, thereby achieving the effect of vibration reduction and noise reduction.

[0045] In one embodiment of this utility model, h0 ≥ 0.5 mm. In practical applications, the overall structural strength of the electronically controlled cover plate needs to be considered. The deeper the acoustic black hole structure 21, the thinner the acoustic black hole plate 20 at the corresponding position. To ensure the electronically controlled cover plate has a predetermined structural stiffness, the minimum thickness of the acoustic black hole plate 20 is 0.5 mm; and / or, the thickness of the damping layer 10 is h2, the maximum thickness of the acoustic black hole plate 20 is h1, and h2 ≤ h1 / 2. It can be understood that, with the overall thickness of the electronically controlled cover plate remaining constant, the thicker the damping layer 10 and the thinner the acoustic black hole plate 20, the weaker the overall structural stiffness. Therefore, in this embodiment, h2 ≤ h1 / 2, limiting the maximum thickness of the damping layer 10 to reduce the adverse effects of excessive damping layer 10 thickness on the overall structural stiffness.

[0046] In one embodiment of this utility model, reference is made to Figure 2 , Figure 3 as well as Figure 9 The center-to-center distance between any two adjacent acoustic black hole structures 21 is d, where d > 2*r1. This allows any two adjacent acoustic black hole structures 21 to be staggered, preventing interference between them.

[0047] In one embodiment of this utility model, reference is made to Figure 10 and Figure 11 The acoustic black hole plate 20 includes a first sub-plate 22 and a second sub-plate 23 spaced apart. A damping layer 10 is disposed between the first sub-plate 22 and the second sub-plate 23. The acoustic black hole structure 21 is provided on the surfaces of the first sub-plate 22 and the second sub-plate 23 facing away from the damping layer 10. It can be understood that the electronic control cover plate in this embodiment has a three-layer structure, with the damping layer 10 in the middle and an acoustic black hole effect layer on each of the opposite sides of the damping layer 10. That is, the acoustic black hole plate 20 includes a first sub-plate 22 and a second sub-plate 23 spaced apart, with the damping layer 10 between the first sub-plate 22 and the second sub-plate 23. The acoustic black hole structure 21 is provided on the surfaces of the first sub-plate 22 and the second sub-plate 23 facing away from the damping layer 10. In this way, the acoustic black hole effect can achieve vibration reduction and noise reduction both before and after the damping layer 10, further reducing the vibration or noise of the compressor.

[0048] In one embodiment of this utility model, reference is made to Figure 9 The electrical control cover also includes mounting holes 30, which penetrate the first sub-plate 22, the second sub-plate 23, and the damping layer 10, and are spaced apart from the acoustic black hole structure 21. The mounting holes 30 allow for easy installation of the electrical control cover onto the electrical control box. Furthermore, the spaced arrangement of the mounting holes 30 and the acoustic black hole structure 21 improves the tightening effect of the bolts. Optionally, the electrical control cover is fixed to the electrical control box by bolts. That is, the electrical control box has threaded holes, and the bolts pass through the mounting holes 30 and are threaded into the threaded holes. The mounting holes 30 can be threaded holes or plain holes (i.e., holes without threads), and are not limited here.

[0049] In one embodiment of this utility model, the acoustic black hole structure 21 on the first sub-plate 22 and the acoustic black hole structure 21 on the second sub-plate 23 are arranged symmetrically with respect to the damping layer 10, as shown in the figure. Figure 10 This can further improve the convenience of processing; or, the acoustic black hole structure 21 on the first sub-board 22 and the acoustic black hole structure 21 on the second sub-board 23 are staggered in center, referring to... Figure 11 In this way, the acoustic black hole effect areas on the first sub-plate 22 and the second sub-plate 23 will partially overlap, which can better absorb vibration or noise.

[0050] In one embodiment of this utility model, the outer contour of the acoustic black hole structure 21 is circular or rectangular. It is understood that the outer contour of the acoustic black hole structure 21 refers to the overall contour of the acoustic black hole structure 21 on the surface of the acoustic black hole plate 20 facing away from the damping layer 10, viewed from the side opposite to the damping layer 10. In practical applications, the outer contour can be circular, as shown in the reference... Figure 3 , Figure 5 as well as Figure 7 It can also be a rectangle, see reference. Figure 8 and Figure 9 No restrictions are imposed here.

[0051] In one embodiment of this invention, the acoustic black hole plate 20 and the damping layer 10 are shape-fitted. This allows the damping layer 10 to completely cover the acoustic black hole plate 20, preventing it from being exposed.

[0052] In one embodiment of this utility model, the acoustic black hole plate 20 is a metal plate. This provides the necessary structural rigidity for the entire electrical control cover, enhancing its resistance to external impacts and vibrations. Furthermore, the metal plate itself has good thermal conductivity, which helps convert sound wave energy into heat energy, further improving the noise reduction effect of the acoustic black hole plate 20. Simultaneously, the flatness and stability of the metal plate help maintain the overall shape of the electrical control cover, preventing deformation caused by long-term vibration. And / or, the damping layer 10 is made of rubber. Rubber has high damping characteristics, effectively absorbing and attenuating vibrations generated by the circuit board and other components inside the electrical control box, reducing the transmission of vibrations to the electrical control cover and the radiation of noise. In addition, the elasticity and softness of the rubber material can fill and cover minor unevenness on the surface of the metal plate, further improving the sound wave absorption efficiency of the acoustic black hole plate 20.

[0053] To achieve the above objectives, this utility model provides a compressor, which includes an electrical control box with an opening and an electrical control cover plate disposed in the opening. The electrical control cover plate is the one described above. Specifically, the specific structure of the electrical control cover plate refers to the above embodiments. Since this compressor adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0054] To achieve the above objectives, this utility model provides an air conditioner comprising the compressor described above. Specifically, the compressor's structure is as described in the above embodiments. Since this air conditioner employs all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. In one embodiment, the air conditioner can be a regular household air conditioner. Of course, in other embodiments, the air conditioner can also be a vehicle air conditioner.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model embodiments. Any equivalent structural transformations made under the technical concept of the present utility model using the description and drawings of the present utility model embodiments, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model embodiments.

Claims

1. An electrically controlled cover plate, characterized by, The electric control cover plate comprises a damping layer and an acoustic black hole plate arranged in a stack, and the surface of the acoustic black hole plate away from the damping layer is provided with an acoustic black hole structure; The depth of the acoustic black hole structure gradually decreases from the middle to both ends and satisfies the curve H. , For acoustic black hole plates in The thickness of the location, The minimum thickness of the acoustic black hole plate. The curve coefficients are A≠0. The distance from any point on the acoustic black hole structure to the centerline of the acoustic black hole structure is given. Satisfy 0≤ ≤r1, where r1 is half the width of the central cross-section of the acoustic black hole structure, and m is a power exponent and m≥2.

2. The electrically controlled cover plate of claim 1, wherein, ≥ 0.5 mm; and / or, the thickness of the damping layer is h2, the maximum thickness of the acoustic black hole panel is hi, h2≤ hi / 2.

3. The electrically controlled cover plate of claim 1, wherein, The center-to-center spacing of any two adjacent acoustic black hole structures is d, d > 2 r1.

4. The electrically controlled cover plate of claim 1, wherein, The acoustic black hole plate comprises a first sub-plate and a second sub-plate arranged at intervals, and the damping layer is arranged between the first sub-plate and the second sub-plate, and the surface of the first sub-plate and the second sub-plate away from the damping layer is provided with the acoustic black hole structure.

5. The electrically controlled cover plate of claim 4, wherein, The electric control cover plate further comprises a mounting hole, and the mounting hole penetrates through the first sub-plate, the second sub-plate and the damping layer and is arranged at intervals with the acoustic black hole structure.

6. The electrically controlled cover plate of claim 4, wherein The acoustic black hole structure on the first sub-plate and the acoustic black hole structure on the second sub-plate are arranged in a symmetrical state about the damping layer; or, the centers of the acoustic black hole structure on the first sub-plate and the acoustic black hole structure on the second sub-plate are arranged staggered.

7. The electrically controlled cover plate of claim 1, wherein The acoustic black hole structure has a circular or rectangular outer contour.

8. The electrically controlled cover plate of claim 1, wherein, The acoustic black hole plate and the damping layer are adapted in shape.

9. The electrically controlled cover plate according to any one of claims 1 to 8, wherein The acoustic black hole plate is a metal plate, and / or the material of the damping layer is a rubber material.

10. A compressor characterized by, The compressor comprises an electric control box with an opening and an electric control cover plate arranged at the opening, and the electric control cover plate is the electric control cover plate as claimed in any one of claims 1 to 9.

11. An air conditioner characterized by comprising: The air conditioner comprises the compressor as claimed in claim 10.

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