Electric control component and air conditioner with same

Abstract

The utility model discloses an electric control part and an air conditioner with the same, the electric control part comprises an electric control box and a circuit board, the circuit board is arranged in the electric control box, and the circuit board comprises a substrate and a first heating device arranged on the substrate; wherein the electric control box comprises an inner shell and an outer shell, a through hole corresponding to the first heating device is formed in the inner shell, the outer shell covers the inner shell and is provided with a heat transfer part corresponding to the through hole, and the heat transfer part penetrates through the through hole and is in heat conduction fit with the first heating device. According to the electric control component provided by the utility model, the heat dissipation efficiency of the first heating device in the electric control box can be improved, the electric control component can adapt to heat dissipation of the first heating device with smaller thickness, and the thin design of the electric control component is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an electric control component and an air conditioner having the same. Background Art

[0002] Some electric control boxes in the related art are designed in a sealed form in order to isolate the circuit board inside from the external combustible refrigerant, resulting in difficult heat dissipation of the heating module inside. Especially when the heating module integrates more functions, the heat dissipation difficulty is greater. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model provides an electric control component and an air conditioner having the same, which is beneficial to improving the heat dissipation efficiency of the first heating device in the electric control box, and can adapt to the heat dissipation of the first heating device with a smaller thickness, which is beneficial to the thin design of the electric control component.

[0004] In a first aspect, an embodiment of the present application provides an electric control component, including: an electric control box; a circuit board, the circuit board is arranged in the electric control box and includes a substrate and a first heating device arranged on the substrate; wherein, the electric control box includes an inner shell and an outer shell, a perforation corresponding to the first heating device is formed on the inner shell, the outer shell covers the inner shell, and has a heat transfer part corresponding to the perforation, and the heat transfer part penetrates through the perforation to be in heat conduction cooperation with the first heating device.

[0005] In the above technical solution, it is beneficial to improve the heat dissipation efficiency of the first heating device in the electric control box, and can adapt to the heat dissipation of the first heating device with a smaller thickness, which is beneficial to the thin design of the electric control component.

[0006] In some embodiments of the present application, the outer shell is a metal part, and the inner shell is an insulating part.

[0007] In some embodiments of the present application, the wall thickness of the heat transfer part is greater than or equal to the wall thickness of the rest of the outer shell; and / or, the heat transfer part is formed by stamping the outer shell so that the heat transfer part is constructed as a convex structure protruding towards the circuit board.

[0008] In some embodiments of the present application, one side surface of the heat transfer part facing the first heating device is a heat conduction surface, the heat transfer part is in heat conduction cooperation with the first heating device through the heat conduction surface, and taking the plane perpendicular to the thickness direction of the substrate as the projection surface, the orthographic projection of the outer contour of the first heating device on the projection surface is within the outer contour range of the orthographic projection of the heat conduction surface on the projection surface.

[0009] In some embodiments of the present application, one side surface of the heat transfer part facing the first heating device is a heat-conducting surface. The heat transfer part is in heat-conducting cooperation with the first heating device through the heat-conducting surface. The side wall of the heat transfer part is configured as a guiding surface, and the inner wall of the outer shell is connected to the heat-conducting surface through the guiding surface. The guiding surface is used to guide the heat transfer part to extend into the through hole.

[0010] In some embodiments of the present application, one side of the inner shell facing the substrate has a convex ring. The convex ring is arranged around the through hole, and at least part of the heat transfer part penetrates through the convex ring.

[0011] In some embodiments of the present application, at least part of the first heating device extends into the convex ring.

[0012] In some embodiments of the present application, the electronic control component further includes: a heat-conducting member, which is arranged between the heat transfer part and the first heating device.

[0013] In some embodiments of the present application, the electronic control component further includes: a sealing member, which is arranged between the inner shell and the outer shell and surrounds the heat transfer part.

[0014] In some embodiments of the present application, the sealing member includes a first sealing ring, a connecting ring, and a second sealing ring that are arranged at intervals along the direction from the inner shell to the outer shell. The inner ring of the first sealing ring is connected to the inner ring of the second sealing ring through the connecting ring, so as to form an annular groove that opens in a direction away from the connecting ring between the first sealing ring, the second sealing ring, and the connecting ring. The first sealing ring is in sealing cooperation with the inner shell, and the second sealing ring is in sealing cooperation with the outer shell.

[0015] In some embodiments of the present application, the first heating device includes a controller and / or a driving chip, and the controller is electrically connected to the driving chip.

[0016] In some embodiments of the present application, the electronic control box includes a first box cover and a second box cover. The first box cover and the second box cover are covered with each other along the thickness direction of the substrate. The first heating device is arranged on one side of the substrate facing the first box cover. Among them, at least one front component is arranged on one side of the substrate facing the second box cover, and the height of the front component is greater than the height of the first heating device. At least one back component is also arranged on one side of the substrate facing the first box cover, and the height of the back component is less than the height of the highest device among the front components.

[0017] In some embodiments of the present application, the electronic control box is a closed box body.

[0018] Second aspect, embodiments of the present application provide an air conditioner, including an electronic control component according to the above first aspect embodiments of the present utility model.

[0019] In the above technical solution, by adopting the above electronic control component, the performance of the air conditioner can be improved.

[0020] In some embodiments of the present application, the electronic control component is disposed in the indoor unit of the air conditioner. A driving module for driving the fan of the indoor unit is provided on the circuit board, and the driving module constitutes the first heating device.

[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is an exploded schematic view of an electronic control component provided by some embodiments of the present application;

[0024] Figure 2 is Figure 1 an enlarged view of part A shown in

[0025] Figure 3 is Figure 1 an enlarged view of part B shown in

[0026] Figure 4 is a circuit topology diagram of the first heating device provided by some embodiments of the present application.

[0027] REFERENCE SIGNS:

[0028] Electronic control component 100,

[0029] Electronic control box 1, inner shell 11, perforation 111, convex ring 112, outer shell 12, heat transfer part 121, heat conducting surface 1211, guiding surface 1212, first box cover 1A, second box cover 1B,

[0030] Circuit board 2, substrate 21, first heating device 22, controller 221, driving chip 222, inverter circuit 223, heat conducting member 3, sealing member 4, first sealing ring 41, second sealing ring 42, connecting ring 43, annular groove 44. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the applicability of other processes and / or the use of other materials.

[0033] Next, referring to the accompanying drawings, an electric control component 100 according to an embodiment of the present utility model will be described.

[0034] As Figure 1 shown, the electric control component 100 according to an embodiment of the present utility model includes an electric control box 1 and a circuit board 2. The circuit board 2 is disposed inside the electric control box 1. The circuit board 2 includes a substrate 21 (for example, carrying components and electrical connection relationships) and a first heating device 22 disposed on the substrate 21. Among them, the electric control box 1 includes an inner shell 11 and an outer shell 12. A through hole 111 corresponding to the first heating device 22 is formed on the inner shell 11. The outer shell 12 covers the outside of the inner shell 11, and the outer shell 12 has a heat transfer portion 121 corresponding to the through hole 111. The heat transfer portion 121 passes through the through hole 111 and is in thermal conduction cooperation with the first heating device 22.

[0035] Thus, by arranging the heat transfer portion 121 to pass through the through hole 111 and be in thermal conduction cooperation with the first heating device 22, the outer shell 12 can exchange heat with the first heating device 22 through the heat transfer portion 121. That is, the heat generated by the first heating device 22 can be transferred out through the outer shell 12, which is beneficial to reducing the heat of the first heating device 22. In this way, without adding additional components, the heat dissipation problem of the first heating device 22 inside the electric control box 1 can be improved to achieve effective heat dissipation of the first heating device 22. It can be seen that by simply designing the outer shell 12 and the inner shell 11, the heat of the first heating device 22 is transferred outside the electric control box 1 through the outer shell 12, and the structure of the electric control component 100 is simple and easy to implement, which can reduce costs.

[0036] Among them, by forming a perforation 111 in the inner shell 11, the outer shell 12 having a heat transfer part 121 corresponding to the perforation 111, and the heat transfer part 121 being inserted through the perforation 111 to be in thermal conduction cooperation with the first heating device 22, the distance between the outer shell 12 and the first heating device 22 can be effectively shortened, the thermal conductivity between the outer shell 12 and the first heating device 22 can be increased, the heat transfer efficiency between the outer shell 12 and the first heating device 22 can be improved, and thus the heat dissipation performance of the electronic control component 100 for the first heating device 22 can be improved.

[0037] It can be understood that the outer shell 12 is located outside the inner shell 11. The electronic control component 100 forms a corresponding perforation 111 in the inner shell 11 so that the outer shell 12 can be in thermal conduction cooperation with the first heating device 22 through the heat transfer part 121, so as to enable the first heating device 22 to transfer heat to the outer shell 12, that is, the electronic control component 100 realizes the heat dissipation of the first heating device 22 through the outer shell 12, and the outer shell 12 is in contact with the external environment, which is beneficial to improving the heat dissipation effect of the electronic control component 100.

[0038] In the related art, the thickness of some first heating devices is relatively large, which will increase the volume of the electronic control component. In the embodiment of the present application, by inserting the heat transfer part 121 through the perforation 111 to be in thermal conduction cooperation with the first heating device 22, the electronic control component 100 with a relatively small thickness of the first heating device 22 can be effectively adapted, such as the electronic control component 100 with the thickness of the first heating device 22 less than or equal to 3 mm, which is beneficial to realizing the thin-type design of the electronic control component 100 and can solve the heat dissipation problem of the first heating device 22 of the thin-type electronic control component 100.

[0039] Exemplarily, the thickness of the heat transfer part 121 is greater than or equal to the thickness of the remaining part of the outer shell 12 (such as the thickness of the surrounding part structure of the heat transfer part 121), which is beneficial to improving the heat conduction ability of the heat transfer part 121 and can improve the heat transfer efficiency between the heat transfer part 121 and the first heating device 22.

[0040] Exemplarily, the outer shell 12 covers the outside of the inner shell 11, which can be understood as at least part of the outer shell 12 covering the outside of the inner shell 11, that is, the outer shell 12 can cover part of the surface of the inner shell 11, or the outer shell 12 can cover the entire surface of the inner shell 11, that is, the outer shell 12 wraps the inner shell 11.

[0041] Exemplarily, when the heat transfer part 121 is inserted through the perforation 111 to be in thermal conduction cooperation with the first heating device 22, the heat transfer part 121 is in direct or indirect contact with the first heating device 22 to achieve thermal conduction cooperation.

[0042] For example, in combination with Figure 1, the electronic control component 100 includes an electronic control box 1 and a circuit board 2. The electronic control box 1 includes a first box cover 1A and a second box cover 1B. The first box cover 1A and the second box cover 1B are mutually covered along the thickness direction of the substrate 21 to define an installation cavity. The circuit board 2 is fixedly arranged in the installation cavity. The circuit board 2 includes a substrate 21 and a first heating device 22. The first heating device 22 is arranged on one side of the substrate 21 facing the first box cover 1A. Among them, the first box cover 1A and the second box cover 1B respectively include an inner shell 11 and an outer shell 12. A through hole 111 corresponding to the first heating device 22 is formed on the inner shell 11 of the first box cover 1A. The outer shell 12 of the first box cover 1A has a heat transfer part 121 corresponding to the through hole 111. The heat transfer part 121 passes through the through hole 111 and is in heat conduction cooperation with the first heating device 22. Thus, through the heat transfer part 121 of the outer shell 12, heat transfer between the outer shell 12 and the first heating device 22 can be realized, so as to diffuse the heat generated by the first heating device 22 to the external environment through the outer shell 12, thereby solving the internal heat dissipation problem of the electronic control component 100.

[0043] In the above technical solution, by arranging the heat transfer part 121 to penetrate through the through hole 111 and be in heat conduction cooperation with the first heating device 22, the outer shell 12 can exchange heat with the first heating device 22 through the heat transfer part 121, that is, the heat generated by the first heating device 22 can be transferred out through the outer shell 12, which is beneficial to reducing the heat of the first heating device 22. Thus, on the premise of not increasing the original components, the heat dissipation problem of the first heating device 22 in the electronic control box 1 can be solved to realize the heat dissipation of the first heating device 22. Secondly, the distance between the outer shell 12 and the first heating device 22 can be effectively shortened, which can adapt to the heat dissipation of the first heating device 22 with a smaller thickness and is beneficial to the thin-type design of the electronic control component 2. Therefore, by simply designing the outer shell 12 and the inner shell 11, the heat of the first heating device 22 can be transferred to the outside of the electronic control box 1 through the outer shell 12, and the structure of the electronic control component 100 is simple and easy to implement, which can reduce the cost.

[0044] In some technologies, since the electronic control box (such as the indoor R290 electronic control box) adopts a closed structure, that is, the electronic control box is a closed box body, and the fan first heating device is arranged in the electronic control box, the heat dissipation of the fan first heating device is relatively poor. Especially for the models with a larger fan power, the heat dissipation problem is more prominent. And when the fan first heating device is built into the motor of the fan (instead of being arranged in the electronic control box), there are also bottlenecks in terms of cost and control technology, etc.

[0045] Specifically, the first heat generating device of the fan is arranged inside the electric control box. In order to balance the heat dissipation and safety regulations requirements of the first heat generating device of the fan, on the one hand, the first heat generating device of the fan needs to be in contact with the electric control box to ensure heat dissipation performance. On the other hand, the distance between the pins connecting the first heat generating device of the fan to the substrate and the electric control box needs to be sufficient to avoid creepage and meet the safety regulations requirements. In this way, in the related art, a solution of increasing the overall height of the first heat generating device of the fan is adopted, so that the first heat generating device of the fan has an appropriate thickness to be in contact with the electric control box for heat conduction, and the first heat generating device of the fan can support the relative pins farther away from the electric control box to meet the safety regulations requirements. However, since the overall height of the first heat generating device of the fan is relatively high, the first heat generating device of the fan generates more heat and it is more difficult to dissipate heat.

[0046] Compared with the related art, in the embodiments of the present application, the heat transfer portion 121 protrudes towards the first heat generating device 22, which can shorten the distance between the heat transfer portion 121 and the first heat generating device 22, but can ensure that the distance between the remaining part of the housing 12 and the pins of the first heat generating device 22 is relatively large, so as to improve the heat dissipation performance while meeting the requirements of safety regulations. That is, through the heat transfer portion 121 passing through the through hole 111 to conduct heat with the first heat generating device, the first heat generating device 22 does not need to increase its thickness, that is, the first heat generating device 22 can also conduct heat with the housing 12 at a relatively small thickness, which is beneficial to reducing the heat generation of the first heat generating device 22 and realizing a thin design.

[0047] In some embodiments of the present application, the housing 12 is a metal part and the inner housing 11 is an insulating part. Thus, the inner housing 11 can ensure the safety of the circuit board 2 and guarantee the electrical insulation between the circuit board 2 and the housing 12. The housing 12 being a metal part (such as an aluminum alloy part, a galvanized part) can improve the impact resistance of the housing 12, which is beneficial to improving the safety of the circuit board 2. At the same time, the metal part has a good heat dissipation effect, which can improve the heat dissipation effect of the housing 12 on the first heat generating device 22.

[0048] Exemplarily, the housing 12 is a fireproof sheet metal of the electric control component 100. While improving the safety of the electric control component 100, the housing 12 can effectively dissipate heat from the first heat generating device 22.

[0049] Exemplarily, the inner housing 11 can be an insulating and fireproof part, which can realize the safety insulation and fire prevention functions of the electric control component 100.

[0050] In some embodiments of the present application, when the housing 12 is a metal part, the wall thickness of the heat transfer portion 121 is greater than or equal to the wall thickness of the remaining part of the housing 12. In this way, the heat dissipation effect can be optimized.

[0051] In some embodiments of the present application, the housing 12 is stamped to form a heat transfer portion 121, so that the heat transfer portion 121 is configured as a convex structure protruding in the direction of the circuit board 2. Thus, the heat transfer portion 121 can be formed by stamping the housing 12, which is convenient for simplifying the processing difficulty of the heat transfer portion 121, can reduce the production cost of the housing 12, and can improve the processing accuracy of the heat transfer portion 121.

[0052] Exemplarily, the housing 12 is a stamping part. For example, the housing 12 is formed by stamping a sheet metal part, and the housing 12 is stamped to form a heat transfer portion 121, so that the heat transfer portion 121 is configured as a convex structure protruding in the direction of the circuit board 2. This is beneficial to reducing the cost and processing difficulty of the housing 12.

[0053] However, the present application is not limited thereto. For example, in other embodiments of the present application, the housing 12 may not be stamped. For example, when the wall thickness of the heat transfer portion 121 is greater than the wall thickness of the remaining part of the housing 12, the thicker area of the housing 12 may also be used as the protruding heat transfer portion 121.

[0054] In addition, regardless of whether the wall thickness of the heat transfer portion 121 is greater than or equal to the wall thickness of the remaining part of the housing 12, the heat transfer portion 121 can be formed by stamping.

[0055] In some embodiments of the present application, in combination with Figure 1 and Figure 2 , one side surface of the heat transfer portion 121 facing the first heat generating device 22 is a heat conducting surface 1211. The heat transfer portion 121 is in heat conducting cooperation with the first heat generating device 22 through the heat conducting surface 1211. Taking the plane perpendicular to the thickness direction of the substrate 21 as the projection plane, the orthographic projection of the outer contour of the first heat generating device 22 on the projection plane is located within the outer contour of the orthographic projection of the heat conducting surface 1211 on the projection plane. Thus, the heat conducting surface 1211 has sufficient contact area to contact the first heat generating device 22, which can improve the heat transfer efficiency between the heat transfer portion 121 and the first heat generating device 22, and is beneficial to improving the heat dissipation effect of the housing 12 on the first heat generating device 22.

[0056] Of course, the present application is not limited thereto. For example, in other embodiments of the present application, it may also be set that most of the orthographic projection of the outer contour of the first heat generating device 22 on the projection plane is located within the outer contour of the orthographic projection of the heat conducting surface 1211 on the projection plane.

[0057] In some embodiments of the present application, in combination with Figure 1 and Figure 2The surface of the heat transfer portion 121 facing the first heating element 22 is a heat-conducting surface 1211, and the heat transfer portion 121 cooperates with the first heating element 22 for heat conduction through the heat-conducting surface 1211. The side wall of the heat transfer portion 121 is constructed as a guide surface 1212, and the inner wall of the shell 12 is connected to the heat-conducting surface 1211 through the guide surface 1212. The guide surface 1212 is used to guide the heat transfer portion 121 to extend into the through hole 111.

[0058] For example, combined with Figure 1 and Figure 2 The heat transfer portion 121 is formed as a boss structure, and the surface of the heat transfer portion 121 facing the first heating element 22 is a heat conducting surface 1211. The side wall of the heat transfer portion 121 is constructed as a guide surface 1212. The guide surface 1212 is arranged around the heat conducting surface 1211 and is connected to the heat conducting surface 1211. The guide surface 1212 is inclined relative to the heat conducting surface 1211. For example, the guide surface 1212 is an inclined surface, so that the guide surface 1212 can cooperate with the hole wall of the through hole 111 to guide the heat exchange portion to pass through the through hole 111, so as to ensure that the heat exchange surface and the first heating element 22 are accurately positioned for thermal conduction.

[0059] Exemplarily, the shape of the heat transfer portion 121 is not limited. For example, the heat transfer portion 121 may be a truncated cone structure with inclined side walls, a square cone structure with inclined side walls (the cross section of the square cone is a polygon), etc.

[0060] In the above technical solution, a guide surface 1212 is provided to guide the heat transfer part 121 to pass through the through hole 111, so that the guide surface 1212 can cooperate with the hole wall of the through hole 111 to guide the heat exchange part to pass through the through hole 111, so as to ensure that the heat exchange surface and the first heating element 22 are accurately positioned for thermal coordination.

[0061] In some embodiments of the present application, Figure 1 and Figure 3 The inner shell 11 has a convex ring 112 on one side facing the substrate 21. The convex ring 112 is arranged around the through hole 111, and at least part of the heat transfer part 121 is passed through the convex ring 112. Therefore, the convex ring 112 can increase the matching length between the heat transfer part 121 and the hole wall of the through hole 111, that is, the convex ring 112 can increase the sealing length between the heat transfer part 121 and the through hole 111, so that the sealing between the heat transfer part 121 and the inner shell 11 can be improved by providing the convex ring 112, and to a certain extent, it can prevent external flammable gases from entering the electric control box 1, which is beneficial to improving the electrical safety of the electric control box 1.

[0062] In some embodiments of the present application, at least a part of the first heating device 22 extends into the convex ring 112. Thus, the convex ring 112 can be in a limiting fit with the first heating device 22, so that the convex ring 112 has a certain positioning function, which can improve the accuracy of the corresponding position between the first heating device 22 and the through hole 111, and thus can improve the accuracy of the cooperation between the heat transfer part 121 and the first heating device 22.

[0063] Wherein, at least a part of the heat transfer part 121 penetrates through the convex ring 112, and at least a part of the first heating device 22 extends into the convex ring 112. Thus, the convex ring 112 can play a certain limiting role on the heat transfer part 121 and the first heating device 22 to limit the heat conduction cooperation between the heat transfer part 121 and the first heating device 22 within the convex ring 112, which can improve the cooperation stability between the heat transfer part 121 and the first heating device 22 and is beneficial to improving the heat conduction effect between the housing 12 and the first heating device 22.

[0064] In some embodiments of the present application, in combination Figure 1 , the electronic control component 100 further includes a heat conducting member 3, and the heat conducting member 3 is disposed between the heat transfer part 121 and the first heating device 22. Thus, the heat conducting member 3 can improve the heat transfer efficiency between the heat transfer part 121 and the first heating device 22 and enhance the heat transfer effect between the heat transfer part 121 and the first heating device 22.

[0065] Exemplarily, the heat conducting member 3 is an insulating heat conducting member, the housing 12 is a metal member, and while improving the heat transfer efficiency between the heat transfer part 121 and the first heating device 22, the heat conducting member 3 can achieve insulation between the first heating device 22 and the heat transfer part 121 (housing 12), thereby improving the electrical safety of the electronic control component 100.

[0066] Exemplarily, the heat conducting member 3 can be a heat conducting gasket or heat conducting silicone grease, etc.

[0067] Exemplarily, the heat conducting member 3, a part of the heat transfer part 121, and a part of the first heating device 22 are disposed within the convex ring 112, and the convex ring 112 can ensure stable and reliable cooperation between the heat conducting member 3, the heat transfer part 121, and the first heating device 22, which is beneficial to improving the stability and reliability of the heat conduction cooperation between the heat transfer part 121 and the first heating device 22. However, the present application is not limited thereto. For example, in other embodiments, the heat conducting member 3 can also be supported on the convex ring 112 without being embedded in the convex ring 112.

[0068] Exemplarily, taking the plane perpendicular to the thickness direction of the substrate 21 as the projection plane, the orthographic projection of the outer contour of the first heating device 22 on the projection plane is within the outer contour range of the orthographic projection of the heat conducting member 3 on the projection plane, so as to facilitate the heat conducting member 3 to have sufficient contact area with the first heating device 22 and improve the heat transfer efficiency between the heat conducting member 3 and the first heating device 22.

[0069] Wherein, in the direction parallel to the projection plane, the shortest distance between the outer contour of the first heating device 22 and the outer contour of the heat conducting member 3 is greater than or equal to 3 mm, so as to have a proper electrical distance between the first heating device 22 and the heat transfer portion 121 (the housing 12), and the electrical safety between the electric control components 100 can be improved.

[0070] In some embodiments of the present application, in combination with Figure 1 and Figure 2 , the electric control component 100 further includes a seal 4, the seal 4 is arranged between the inner housing 11 and the outer housing 12, and the seal 4 is arranged around the heat transfer portion 121. For example, in combination with Figure 2 , the seal 4 is formed into an annular structure, and the seal 4 is sleeved on the heat transfer portion 121 to realize the seal between the inner housing 11 and the outer housing 12.

[0071] Exemplarily, the seal 4 is in interference fit with the heat transfer portion 121. Thus, the seal 4 can effectively form a gap between the heat transfer portion 121 and the through hole 111, thereby improving the sealing performance between the inner housing 11 and the outer housing 12.

[0072] In the above technical solution, by arranging the seal 4 between the inner housing 11 and the outer housing 12 and arranging it around the heat transfer portion 121, the seal 4 can realize the sealing performance between the heat transfer portion 121 and the inner housing 11, that is, the seal 4 can seal the gap between the heat transfer portion 121 and the through hole 111, so that the seal 4 can improve the sealing performance between the inner housing 11 and the outer housing 12, and to a certain extent, it can prevent combustible refrigerant or water from entering the electric control box 1, and the electrical safety of the electric control box 1 can be improved.

[0073] In some embodiments of the present application, in combination with Figure 1 and Figure 2 , the seal 4 includes a first sealing ring 41, a connecting ring 43 and a second sealing ring 42 which are arranged at intervals along the direction from the inner housing 11 to the outer housing 12. The inner ring of the first sealing ring 41 is connected to the inner ring of the second sealing ring 42 through the connecting ring 43, so as to form an annular groove 44 opening in the direction away from the connecting ring 43 between the first sealing ring 41, the second sealing ring 42 and the connecting ring 43. The first sealing ring 41 is in sealing cooperation with the inner housing 11, and the second sealing ring 42 is in sealing cooperation with the outer housing 12. Thus, the annular groove 44 can provide a certain deformation space for the seal 4, so that the seal 4 can better seal with the inner housing 11 and the outer housing 12, which is beneficial to improving the sealing performance of the seal 4, that is, improving the sealing performance between the inner housing 11 and the outer housing 12.

[0074] For example, in combination with Figure 2, the seal 4 includes a first sealing ring 41, a second sealing ring 42 and a connecting ring 43. The opposite sides of the connecting ring 43 are respectively connected to the inner rings of the first sealing ring 41 and the second sealing ring 42 to form an annular groove 44 on the seal 4. When the seal 4 is arranged between the inner shell 11 and the outer shell 12 and the seal 4 surrounds the heat transfer part 121, the seal 4 can be compressed and deformed between the inner shell 11 and the outer shell 12, so that the first sealing ring 41 is closely fitted with the inner shell 11 and the second sealing ring 42 is closely fitted with the outer shell 12, thereby realizing the sealing at the corresponding perforation 111 of the inner shell 11 and the outer shell 12 and improving the sealing performance between the inner shell 11 and the outer shell 12.

[0075] In some embodiments of the present application, in combination with Figure 1 , when the electric control box 1 includes a first box cover 1A and a second box cover 1B, the first box cover 1A and the second box cover 1B are covered with each other along the thickness direction of the substrate 21, and the first heating device 22 is arranged on one side of the substrate 21 facing the first box cover 1A, at least one front component (the type is not limited, for example, it may include components with relatively large volume, such as capacitors, inductors, etc.) can be arranged on the side of the substrate 21 facing the second box cover 1B. Thus, both sides of the substrate 21 can be utilized, and the front components are not easily affected by the heat of the first heating device 22.

[0076] In some embodiments of the present application, in combination with Figure 1 , when the electric control box 1 includes a first box cover 1A and a second box cover 1B, the first box cover 1A and the second box cover 1B are covered with each other along the thickness direction of the substrate 21, and the first heating device 22 is arranged on one side of the substrate 21 facing the first box cover 1A, at least one back component (the type is not limited, for example, it may include components with relatively low volume and relatively high heat generation) is also arranged on the side of the substrate 21 facing the first box cover 1A. Thus, the circuit board 2 can dissipate heat concentratedly from the side facing the first box cover 1A, and it is easy to carry out heat dissipation design.

[0077] In some embodiments of the present application, in combination with Figure 1 , when the electric control box 1 includes a first box cover 1A and a second box cover 1B, the first box cover 1A and the second box cover 1B are covered with each other along the thickness direction of the substrate 21, and the first heating device 22 is arranged on one side of the substrate 21 facing the first box cover 1A, at least one front component is arranged on the side of the substrate 21 facing the second box cover 1B, the height of the front component is greater than the height of the first heating device 22, and at least one back component is also arranged on the side of the substrate 21 facing the first box cover 1A, and the height of the back component is less than the height of the highest device among the front components.

[0078] Among them, the types of the front components are not limited. For example, they may include components with relatively large volumes, such as capacitors, inductors, etc. The types of the back components are not limited. For example, they may include components with relatively low heights and high heat generation. Thus, both sides of the substrate 21 can be utilized. The circuit board 2 can dissipate heat concentratedly from the side facing the first lid 1A, and the components on the side of the substrate 21 facing the second lid 1B are not easily affected by the heat of the first heat-generating device 22 and the back components. Exemplarily, the heat generation of at least one back component is higher than that of at least one front component.

[0079] Exemplarily, the front components are located on one side of the substrate 21, the back components and the first heat-generating device 22 are located on the other side of the substrate 21, and the heights of both the back components and the first heat-generating device 22 are smaller than the height of the front components. Thus, the back components and the first heat-generating device 22 are located on the same side of the substrate 21, that is, the back components and the first heat-generating device 22 are located on the side of the substrate 12 facing the through hole 111. Moreover, since the back components and the first heat-generating device 22 have smaller heights, they can better adapt to the structure of the electric control box 1. That is, the part of the electric control box 1 corresponding to the back components and the first heat-generating device 22 (such as the second lid 1B) has a relatively flat structure and a relatively small distance from the substrate 21, which is beneficial to reducing the volume of the electric control box 1 and can shorten the distance between the outer shell 12 and the first heat-generating device 22, facilitating the heat transfer part 121 to pass through the through hole 111 to conduct heat with the first heat-generating device 22.

[0080] Optionally, the inner shell 11 is formed with a plurality of through holes 111, the outer shell 12 has a plurality of heat transfer parts 121, the plurality of heat transfer parts 121 correspond to the plurality of through holes 111 one by one, and each heat transfer part 121 corresponds to a first heat-generating device 22 or a back component. Thus, by the heat transfer part 121 passing through the through hole 111 to conduct heat with the corresponding first heat-generating device 22 or back component, the heat of the first heat-generating device 22 and the back components can be released to the external environment through the outer shell 12 to achieve the heat dissipation of the first heat-generating device 22 and the back components.

[0081] In some embodiments of the present application, in combination with Figure 1 and Figure 4 , the first heat-generating device 22 includes a controller 221 and / or a driver chip 222. When the first heat-generating device 22 includes both the controller 221 and the driver chip 222 at the same time, the controller 221 is electrically connected to the driver chip 222. Thus, by arranging the controller 221 and the driver chip 222 on the substrate 21, the controller 221 and the driver chip 222 can be integrally arranged, which can realize the miniaturization and low cost of the electric control box 1.

[0082] For example, in combination with Figure 4, taking the example of the first heating device 22 being connected to the blower, the controller 221 and the drive chip 222 are provided on the substrate 21. The output end of the controller 221 is connected to the input end of the drive chip 222. The output end of the first heating device 22 is adapted to be connected to a blower (such as an indoor blower). The controller 221 is configured to control the drive chip 222 to drive the blower. The substrate 21 is a printed circuit board (PCB). By arranging the controller 221 and multiple drive chips 222 on the same substrate 21, the integration of the controller 221 and the drive chip 222 is achieved, solving the problem of large board space occupied after the external drive of the blower in the related art and reducing the application cost.

[0083] Among them, the controller 221 is responsible for receiving and processing input signals, and generating a PWM (Pulse Width Modulation) control signal based on the input signals according to a control algorithm. The drive chip 222 receives the PWM control signal and converts the PWM control signal into an electrical signal that the blower can understand and execute. Specifically, it can amplify the received PWM control small signal and convert it into a corresponding large current output for controlling the blower. During the operation of the blower, the drive chip 222 controls the magnitude and direction of the output current according to the magnitude and direction of the PWM control signal, thereby realizing the control of the rotation speed, rotation direction, torque, etc. of the blower. The drive chip 222 can integrate a CMOS (Complementary Metal Oxide Semiconductor) control circuit and a DMOS (Double-diffused Metal Oxide Semiconductor) power device, enabling the drive chip 222 to handle high voltages and large currents to meet the requirements of motor drive.

[0084] Exemplarily, in combination with Figure 4 , the first heating device 22 further includes an inverter circuit 223. The inverter circuit 223 includes at least one phase arm. Each phase arm is connected to the first direct current VDC, and each phase arm includes an upper bridge switching tube and a lower bridge switching tube connected in series, and the connection point is adapted to be connected to a blower (such as an indoor blower); each drive chip 222 is correspondingly connected to the upper bridge switching tube and the lower bridge switching tube of one phase arm, and each drive chip 222 is also connected to the controller 221 to control the conduction or cutoff of the upper switching tube and the lower switching tube of the corresponding phase arm under the control of the controller 221 to drive the blower.

[0085] Specifically, the driving chip 222 is used to receive the PWM control signal output by the controller 221, generate a corresponding driving signal according to the PWM control signal, control the upper-bridge switching tube and the lower-bridge switching tube of the inverter circuit 223, and output corresponding electrical signals by controlling the conduction and cutoff of the upper-bridge switching tube and the lower-bridge switching tube to drive the fan to operate.

[0086] For example, in combination with Figure 4 , let M represent the fan, and the fan is an indoor fan. The inverter circuit 223 consists of six switching tubes to form a three-phase bridge arm to form a full-bridge inverter topology. Among them, the switching tubes Q1 and Q2 form the first bridge arm, the switching tube Q1 is the upper-bridge switching tube of the first bridge arm, and the switching tube Q2 is the lower-bridge switching tube of the first bridge arm. The connection point U of the first bridge arm is connected to the U-phase winding of the indoor fan; the switching tubes Q3 and Q4 form the second bridge arm, the switching tube Q3 is the upper-bridge switching tube of the second bridge arm, and the switching tube Q4 is the lower-bridge switching tube of the second bridge arm. The connection point V of the second bridge arm is connected to the V-phase winding of the indoor fan M; the switching tubes Q5 and Q6 form the third bridge arm, the switching tube Q5 is the upper-bridge switching tube of the third bridge arm, and the switching tube Q6 is the lower-bridge switching tube of the third bridge arm. The connection point W of the third bridge arm is connected to the W-phase winding of the indoor fan. The number of driving chips 222 is three, and they are respectively represented by IC1, IC2, and IC3. Among them, IC1 is used to control the conduction and cutoff of the switching tubes Q1 and Q2, IC2 is used to control the conduction and cutoff of the switching tubes Q3 and Q4, and IC3 is used to control the conduction and cutoff of the switching tubes Q5 and Q6. By controlling the conduction and cutoff of the six switching tubes, the inverter circuit 223 converts the DC voltage into a three-phase alternating current output to drive the indoor fan to operate.

[0087] In some embodiments of the present application, the electronic control box 1 is an enclosed box body. Thus, the electronic control box 1 is hermetically set to meet the sealing requirements of the electronic control box 1, and can effectively prevent combustible refrigerant or water from entering the electronic control box 1, thereby ensuring the electrical safety of the electronic control box 1.

[0088] It should be noted that the electronic control box 1 is an enclosed box body, and the enclosed box body is understood in a broad sense, that is, it does not include heat dissipation holes, opening areas, etc. For example, the sealing performance at the assembly position of the electronic control box 1 (such as the mating position of the first box cover 1A and the second box cover 1B) and the wire threading position for the electronic control box 1 to enter / exit the wire can be ignored. Setting the electronic control box 1 in a closed form can improve the problem caused by the entry of combustible refrigerant into the electronic control box 1 and improve the reliability of the electronic control component 100.

[0089] Exemplarily, the electronic control box 1 is an enclosed box body. The first heating device 22 is connected to the blower, and the first heating device 22 includes a controller 221 and a driving chip 222. The controller 221 is electrically connected to the driving chip 222. Thus, the electronic control component 100 can integrally arrange the controller 221 and the driving chip 222, that is, the two-in-one integration of the controller 221 and the driving chip 222 can be realized. Moreover, the first heating device 22 can dissipate heat through the heat transfer part 121 of the outer shell 12, so as to facilitate the realization of the thin design of the electronic control component 100, solve the heat dissipation problem of the first heating device 22 of the thin electronic control component 100, and solve the problem of large board occupation space after the blower is externally arranged outside the first heating device 22.

[0090] In a second aspect, an embodiment of the present application provides an air conditioner, including the electronic control component 100 according to the above first aspect embodiment of the present utility model.

[0091] In the above technical solution, by adopting the above electronic control component 100, the performance of the air conditioner can be improved.

[0092] In some embodiments of the present application, the electronic control component 100 is arranged in the indoor unit of the air conditioner. A driving module for driving the blower of the indoor unit is arranged on the circuit board 2, and the driving module constitutes the first heating device 22, and the first heating device 22 is used to drive the blower of the indoor unit. In this way, by externally arranging the driving module of the blower of the indoor unit outside the blower and integrating it in the electronic control component 100, it is beneficial to the heat dissipation of the driving module and improves the working reliability of the blower.

[0093] In some embodiments of the present application, in combination with Figures 1 - 4 , the electronic control component 100 adopts the two-in-one integration (integration of MCU and IPM drive) of the first heating device 22 and the design scheme of the fully sealed and heat-dissipating structure of the electronic control component 100 to solve the problems such as large board occupation space and difficult heat dissipation caused by the external arrangement of the blower drive.

[0094] Among them, the two-in-one integration of the first heating device 22 means that the first heating device 22 on the circuit board 2 adopts the integrated arrangement of the controller 221 and the driving chip 222 on the substrate 21, that is, the two-in-one integration of the controller 221 and the driving chip 222. Thus, the controller 221 and the driving chip 222 are arranged more compactly, the occupied volume of the first heating device 22 can be reduced, thereby solving the problem of large board occupation space in the related art after the external arrangement of the blower drive, and reducing the application cost.

[0095] In addition, the electronic control component 100 has a fully sealed and evenly heat-dissipating structure, and includes a circuit board 2, an electronic control box 1, and a seal 4. The circuit board 2 includes a substrate 21 and a first heat-generating device 22, and the first heat-generating device 22 is disposed on one thickness side of the substrate 21. The electronic control box 1 includes an inner shell 11 and an outer shell 12. The circuit board 2 is disposed inside the inner shell 11. A perforation 111 is formed at a position of the inner shell 11 corresponding to the first heat-generating device 22, and a convex ring 112 is provided on a side of the inner shell 11 facing the first heat-generating device 22. The convex ring 112 is arranged around the perforation 111. The outer shell 12 covers the inner shell 11, and the outer shell 12 has a heat-transfer portion 121 that protrudes in the direction facing the circuit board 2. The heat-transfer portion 121 passes through the perforation and is in heat-conducting cooperation with the first heat-generating device to address the problem of insufficient thickness of the first heat-generating device 22. For example, the outer shell 12 is a sheet metal part made of galvanized sheet, the heat-transfer portion 121 is an aluminum alloy part, and the protruding height of the heat-transfer portion is greater than the thickness of the remaining part of the outer shell 12 around the heat-transfer portion, so as to enhance the heat-conducting ability of the heat-transfer portion 121. The seal 4 is disposed between the inner shell 11 and the outer shell 12, and the seal 4 is sleeved on the heat-transfer portion 121 to hermetically fit the gap between the heat-transfer portion 121 and the hole wall of the perforation. Especially for the first heat-generating device 22 with a thickness within 3 mm, the heat dissipation problem of the thin-type first heat-generating device is realized.

[0096] Thus, the electronically controlled component 100 with a sealed design can achieve efficient heat dissipation of the first heat-generating device 22, and there is no need to add additional heat dissipation components or structures, with a low cost, and it can better adapt to the electronically controlled component 100 with a relatively thin first heat-generating device 22.

[0097] Of course, the present application is not limited thereto. In other embodiments of the present application, the first heat-generating device 22 may also be other components that generate heat during operation, such as power devices, capacitors, inductors, etc., which will not be elaborated here.

[0098] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0099] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0100] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0101] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An electronic control component, characterized in that: include: Electric control box; A circuit board, the circuit board is arranged in the electric control box and comprises a substrate and a first heating device arranged on the substrate; Among them, the electric control box includes an inner shell and an outer shell, the inner shell is provided with a through hole corresponding to the first heating device, the outer shell covers the outside of the inner shell and has a heat transfer part corresponding to the through hole, the heat transfer part is penetrated through the through hole and cooperates with the first heating device for thermal conductivity.

2. The electronic control component according to claim 1, characterized in that: The outer shell is a metal part, and the inner shell is an insulating part.

3. The electronic control component according to claim 2, characterized in that: The wall thickness of the heat transfer portion is greater than or equal to the wall thickness of the rest of the housing; and / or the heat transfer portion is formed by stamping the housing so that the heat transfer portion is configured as a protruding structure protruding toward the circuit board.

4. The electronic control component according to claim 1, characterized in that: The surface of the heat transfer portion facing the first heating device is a heat-conducting surface, and the heat transfer portion cooperates with the first heating device through the heat-conducting surface. The plane perpendicular to the thickness direction of the substrate is taken as the projection surface, and the orthographic projection of the outer contour of the first heating device on the projection surface is located within the outer contour range of the orthographic projection of the heat-conducting surface on the projection surface.

5. The electronic control component according to claim 1, characterized in that: A surface of the heat transfer portion facing the first heating element is a heat-conducting surface, and the heat transfer portion is thermally coordinated with the first heating element via the heat-conducting surface. A side wall of the heat transfer portion is configured as a guide surface, and an inner wall of the outer shell is connected to the heat-conducting surface via the guide surface, and the guide surface is used to guide the heat transfer portion to extend into the through hole.

6. The electronic control component according to claim 1, characterized in that: The inner shell has a convex ring on one side facing the base plate. The convex ring is arranged around the through hole, and at least a part of the heat transfer part passes through the convex ring.

7. The electronic control component according to claim 6, characterized in that: At least a portion of the first heating element extends into the convex ring.

8. The electronic control component according to claim 1, characterized in that: Also includes: A heat conducting member is disposed between the heat transfer portion and the first heating element.

9. The electronic control component according to any one of claims 1 to 8, characterized in that: Also includes: A sealing member is disposed between the inner shell and the outer shell and surrounds the heat transfer portion.

10. The electronic control component according to claim 9, characterized in that: The sealing member includes a first sealing ring, a connecting ring, and a second sealing ring which are spaced apart in a direction from the inner shell to the outer shell. The inner ring of the first sealing ring is connected to the inner ring of the second sealing ring through the connecting ring to form an annular groove which is open in a direction away from the connecting ring between the first sealing ring, the second sealing ring, and the connecting ring. The first sealing ring is in sealing cooperation with the inner shell, and the second sealing ring is in sealing cooperation with the outer shell.

11. The electronic control component according to claim 1, characterized in that: The first heating device includes a controller and / or a driving chip, and the controller is electrically connected to the driving chip.

12. The electronic control component according to claim 1, characterized in that: The electric control box comprises a first box cover and a second box cover, wherein the first box cover and the second box cover cover each other along the thickness direction of the substrate, and the first heating device is arranged on a side of the substrate facing the first box cover; Among them, at least one front component is provided on the side of the substrate facing the second box cover, and the height of the front component is greater than the height of the first heating component. At least one reverse component is also provided on the side of the substrate facing the first box cover, and the height of the reverse component is less than the height of the tallest component among the front components.

13. The electronic control component according to claim 1, characterized in that: The electric control box is a closed box body.

14. An air conditioner, characterized in that: The invention comprises an electric control component according to any one of claims 1 to 13.

15. The air conditioner according to claim 14, characterized in that: The electric control component is arranged in the indoor unit of the air conditioner, and a driving module for driving the fan of the indoor unit is arranged on the circuit board, and the driving module constitutes the first heating device.

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