Electric control box assembly and heating and ventilation equipment

Abstract

The invention discloses an electric control box assembly and heating and ventilation equipment, the heating and ventilation equipment comprises the electric control box assembly, the electric control box assembly comprises an electric control box, an electric control board, a conductive wire and a sealing colloid, the electric control box comprises a box body and a box cover, the box cover and the box body are enclosed to form a mounting cavity, the mounting cavity is internally provided with a sealing glue groove, and the sealing glue groove is arranged in the mounting cavity. A first wire passing hole and a second wire passing hole are formed in the groove wall of the glue sealing groove, and the second wire passing hole is communicated with the outside; the electric control board is mounted in the mounting cavity; one end of the conductive wire is connected with the electric control board, and the other end of the conductive wire sequentially penetrates through the first wire passing hole and the second wire passing hole and extends to the outside; and the sealing colloid is arranged in the sealing groove and blocks a gap between the conductive wire and the second wire passing hole. According to the technical scheme of the invention, a stable sealing effect can be formed at a conductive wire penetrating-out position of the electric control box assembly.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning technology, and particularly to an electric control box assembly and a heating, ventilation and air conditioning (HVAC) device using the same. Background Art

[0002] An electric control box is a box or enclosure used to install and protect electrical equipment. The electric control box includes a box body, an electric control board installed inside the box body, and some electrical components. The electric control board and the electrical components are electrically connected to other devices through wires.

[0003] It can be understood that during operation, if liquid enters the electric control box, it is likely to cause corrosion or even short circuit of the electric control board and electrical components, which will affect the service life of the electrical components in the electric control box and reduce the working stability of the electric control box.

[0004] However, in the current design of electric control boxes, the sealing design at the position where the wire passes through the box body is relatively simple. For example, some methods achieve sealing through the interference fit between the wire and the through hole on the box body. In such a sealing design, during long-term use, when the external material of the wire cracks or shrinks due to environmental factors, it is easy to cause the sealing at this place to fail. There is also a form of sleeving a sealing rubber ring, but the sealing rubber ring is not firmly fixed and is also prone to looseness, resulting in sealing failure. Summary of the Invention

[0005] An embodiment of this application provides an electric control box assembly and an HVAC device. The electric control box assembly of this application can form a stable sealing effect at the position where the conducting wire passes through.

[0006] In a first aspect, an embodiment of this application provides an electric control box assembly, including an electric control box, an electric control board, a conducting wire, and a sealing colloid. The electric control box includes a box body and a box cover. The box cover and the box body enclose to form an installation cavity. A sealing glue groove is provided in the installation cavity. A first wire passing hole and a second wire passing hole are provided on the groove wall of the sealing glue groove. The second wire passing hole is communicated with the outside. The electric control board is installed in the installation cavity. One end of the conducting wire is connected to the electric control board, and the other end sequentially passes through the first wire passing hole and the second wire passing hole and extends to the outside. The sealing colloid is disposed in the sealing glue groove and seals the gap between the conducting wire and the second wire passing hole.

[0007] In a possible implementation, a partition is provided in the installation cavity. The partition is connected to the cavity wall of the installation cavity and encloses with the cavity wall of the installation cavity to form the sealing glue groove. The first wire passing hole and the second wire passing hole are provided on opposite sides of the sealing glue groove.

[0008] In a possible implementation, a plurality of conductive wires are provided, and the first wire passing hole and the second wire passing hole are arranged in one-to-one correspondence with the conductive wires.

[0009] In a possible implementation, a plurality of baffles are further provided in the sealant groove. The plurality of baffles divide the sealant groove into a plurality of sealant sub-grooves. Each sealant sub-groove is correspondingly provided with a first wire passing hole and a second wire passing hole, and the sealing colloid is arranged in the sealant sub-groove.

[0010] In a possible implementation, the electric control box is further provided with a wiring groove outside the installation cavity, and the wiring groove is communicated with the second wire passing hole;

[0011] The electric control box assembly further includes a wiring cover plate. The wiring cover plate is connected to the electric control box and covers the wiring groove to enclose a wiring chamber with the electric control box. A wire passing hole communicating with the wiring chamber is provided on the wiring cover plate and / or the electric control box.

[0012] In a possible implementation, a water baffle is further arranged in the wiring groove. The water baffle divides the wiring groove into an electrical appliance groove and a connection groove. The connecting wire of the external device is cooperatively connected with the conductive wire in the electrical appliance groove;

[0013] The electric control box is provided with an installation part in the connection groove, and the wiring cover plate is provided with a connection part. The installation part and the connection part are detachably connected in the connection groove.

[0014] In a possible implementation, in the direction from the electrical appliance groove to the connection groove, the water baffle blocks at least a part of the wire passing hole.

[0015] In a possible implementation, the electric control box assembly further includes a heat dissipation member,

[0016] The box body includes a main body part and a protruding part extending outward from the main body part. A receiving groove communicating with the installation cavity is formed in the protruding part;

[0017] The electric control board assembly includes a substrate and a plurality of electronic components mounted on the substrate. The substrate is fixed in the installation cavity, and at least a part of the plurality of electronic components extends into the receiving groove;

[0018] The heat dissipation member is fixed to the outer side surface of the box body.

[0019] In a possible implementation, a heat conductor is further included; the heat conductor is filled between the outer wall of the electronic component and the wall of the receiving groove.

[0020] In a possible implementation manner, a heat conducting plate is further included; one side of the heat conducting plate is fixedly connected to the substrate, and the other side abuts against the inner wall surface of the main body portion.

[0021] In a possible implementation manner, a thermal grease layer is further included; the thermal grease layer is bonded between the substrate and the heat conducting plate.

[0022] In a possible implementation manner, a concave portion extending towards the installation cavity is further provided on the main body portion, and the side of the heat conducting plate facing away from the substrate abuts against the inner wall surface of the concave portion.

[0023] In a possible implementation manner, a receiving groove with an opening communicating with the outside is formed in the concave portion, the heat dissipating member includes a first heat dissipating portion and a second heat dissipating portion, the first heat dissipating portion contacts the outer wall surface of the protruding portion, and the second heat dissipating portion is embedded in the receiving groove.

[0024] In a possible implementation manner, the heat dissipating member is a microchannel heat exchanger, and includes a header pipe and a flat heat exchange pipe that are connected and communicated, and the flat heat exchange pipe is provided with the first heat dissipating portion and the second heat dissipating portion.

[0025] In a possible implementation manner, a sealing groove surrounding the periphery of the box cover is provided between the box cover and the box body, a sealing ring is provided in the sealing groove, and opposite sides of the sealing ring respectively seal and abut against the box cover and the box body.

[0026] Based on the electric control box assembly of the embodiments of the present application, the electric control board is installed in the installation cavity. The electric control box assembly further sets a potting groove in the installation cavity, and the groove wall of the potting groove is provided with a first wire passing hole and a second wire passing hole. Among them, the second wire passing hole communicates with the outside, so that the conducting wire can smoothly pass through the first wire passing hole, the potting groove, the second wire passing hole and extend to the outside and be connected to the connecting wire of the external device. The present application further fills the potting groove with a sealing colloid, and fills the gap between the conducting wire and the second wire passing hole through the sealing colloid in the potting groove. Compared with the existing sealing forms through interference fit or sleeving a sealing ring, since the potting groove of the present application can effectively restrict the flow of the sealing colloid after the sealing colloid is dispensed, the sealing colloid stably maintains the state of wrapping the conducting wire in the potting groove before the sealing colloid is cured. Then, after the sealing colloid is cured, the sealing colloid forms a reliable wrapping effect in the circumferential direction of the conducting wire, so that the sealing colloid is in close fit with the groove wall of the potting groove provided with the second wire passing hole, thereby making it difficult for external liquid to flow into the installation cavity from the gap between the second wire passing hole and the conducting wire, thus realizing a stable and reliable sealing effect at the position where the conducting wire passes through the box body.

[0027] It should also be noted that since the sealing glue groove is formed in the installation cavity in this application, on the one hand, the sealing glue groove can restrain and fix the solidified sealing colloid, and it is not easily impacted by external forces. Therefore, the sealing colloid is not prone to loosening, and the formed sealing structure is relatively reliable. And since the sealing colloid is located inside, it has relatively less contact with the external environment. During long-term use, its own structure is not prone to aging. Therefore, the sealing structure at this place can also be ensured to be stable and reliable for a long time.

[0028] Secondly, the embodiment of the present application provides a heating and ventilation equipment, including the above-mentioned electric control box assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0030] Figure 1 Structural schematic diagram of an electric control box assembly according to an embodiment provided by the embodiment of the present application;

[0031] Figure 2 For Figure 1 exploded view of the electric control box assembly in

[0032] Figure 3 Structural schematic diagram of the box body provided by the embodiment of the present application;

[0033] Figure 4 For Figure 1 side view of the electric control box assembly in

[0034] Figure 5 For Figure 4 cross-sectional view taken along line A-A in

[0035] Figure 6 For Figure 1 side view of the electric control box assembly from another perspective in

[0036] Figure 7 For Figure 6 cross-sectional view taken along line B-B in

[0037] Figure 8 For Figure 1 schematic diagram of the state after the wiring cover plate is separated from the box body in the electric control box assembly in

[0038] Figure 9 For Figure 1 structural schematic diagram of the electric control board in the electric control box assembly in

[0039] Figure 10 It is a schematic structural diagram of an electronic control box assembly according to another embodiment provided by the embodiments of the present application;

[0040] Figure 11 It is Figure 10 an exploded view of the electronic control box assembly in

[0041] Figure 12 It is Figure 10 a cross-sectional view of the electronic control box assembly in

[0042] Figure 13 It is Figure 10 an exploded view of the heat dissipation component in the electronic control box assembly in

[0043] Explanation of the reference numerals in the drawings:

[0044] 1. Electronic control box assembly; 10. Electronic control box; 11. Box body; 111. Main body part; 112. Protruding part; 113. Accommodating groove; 114. Concave part; 115. Receiving groove; 12. Box cover; 13. Installation cavity; 14. Partition board; 15. Baffle; 16. Sealant groove; 161. Sub-sealant groove; 17. First wire passing hole; 18. Second wire passing hole; 19. Wiring groove; 191. Electrical component groove; 192. Connection groove; 193. Installation part; 194. Water baffle; 20. Electronic control board; 21. Substrate; 22. Electronic components; 30. Heat dissipation component; 31. Manifold; 311. First manifold port; 312. Second manifold port; 32. Heat exchange flat tube; 321. Microchannel; 33. First heat dissipation part; 34. Second heat dissipation part; 341. First extension part; 342. Second extension part; 40. Heat conducting body; 50. Heat conducting plate; 51. Heat conducting silicone grease layer; 60. Sealing groove; 61. Sealing ring; 70. Wiring cover plate; 71. Wiring chamber; 72. Wire passing hole; 73. Connection part; 80. Conductive wire; 90. Sealing colloid.

[0045] The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0046] To make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0047] When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are only examples of devices and methods that are consistent with some aspects of the present application as detailed in the appended claims.

[0048] In the description of the present application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, in the description of the present application, unless otherwise specified, "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0050] Please refer to Figures 1 to 2 , an embodiment of the present application provides an electronic control box assembly 1, Figure 1 is a perspective view of the electronic control box assembly 1 in the assembled state, while Figure 2 shows an exploded schematic view of the electronic control box assembly 1. In the embodiment of the present application, the electronic control box assembly 1 includes an electronic control box 10, an electronic control board 20, a conductive wire 80, and a sealing colloid 90.

[0051] The electronic control box 10 includes a box body 11 and a box cover 12. The box body 11 has an open installation groove, and the box cover 12 is fixed on the box body 11 and seals the opening, so that an installation cavity 13 is formed between the box cover 12 and the box body 11. In some connection methods, one of the box cover 12 and the box body 11 is provided with a threaded hole, and the other is provided with a fixing hole. A threaded member such as a screw or a bolt passes through the fixing hole and is fixed in the threaded hole, so that the box cover 12 and the box body 11 are fixed to each other. The box cover 12 and the box body 11 can also both be provided with fixing holes. A bolt passes through the fixing holes of both, and a nut is used to fix the bolt on the other side, so that the box cover 12 and the box body 11 are fixed to each other. Of course, the box cover 12 and the box body 11 can also be connected by snap connection, or a combination of snap connection and threaded connection can be used for connection. Here, the present application does not specifically limit the connection method between the box body 11 and the box cover 12. The box body 11 and the box cover 12 can be made of metal materials (such as stainless steel, aluminum alloy), and the metal materials can provide better corrosion resistance and mechanical strength; the box body 11 and the box cover 12 can also be made of plastic materials (such as polycarbonate, polypropylene, etc.), and the plastic materials have good insulation performance and molding processability.

[0052] Since the electronic control board 20 will generate heat during operation, this heat needs to be dissipated in a timely manner to avoid the electronic control board 20 being in a high-temperature working environment for a long time, which will have an adverse impact on its stability. Generally, this heat will be transferred to the electronic control box 10 and transferred to the outside from the surface of the electronic control box 10. In order to improve the heat dissipation effect of the electronic control box 10, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the box body 11 of the electronic control box 10, Figure 3 showing the internal structure of the box body 11. The box body 11 includes a main body portion 111 and a protruding portion 112 extending outward from the main body portion 111 (see Figure 1 ). The shape of the protruding portion 112 can be a boss shape such as a cuboid, a cube, a cylinder, etc. As Figure 1 exemplarily shown, the protruding portion 112 is arranged in a long shape. In order to make the structure of the electronic control box 10 more compact, the length extension direction of the protruding portion 112 can be the same as the length extension direction of the main body portion 111, and the length of the protruding portion 112 is less than or equal to the length of the main body portion 111. In addition, the main body portion 111 and the protruding portion 112 can adopt an integrally formed structure, which can save manufacturing processes and installation steps, facilitate processing and forming, and at the same time ensure the overall strength and sealing performance of the box body 11, thereby ensuring the reliability and stability of the electronic control box 10.

[0053] Please also refer to Figure 4 and Figure 5 , in some structural forms, the box cover 12 is covered and connected with the main body portion 111 and encloses an installation cavity 13 with the main body portion 111. A receiving groove 113 communicating with the installation cavity 13 is formed in the protruding portion 112. An inwardly concave portion 114 extending into the installation cavity 13 is further provided on the main body portion 111, and a receiving groove 115 with an opening communicating with the outside is formed in the inwardly concave portion 114. Since the protruding portion 112 and the inwardly concave portion 114 have multiple surfaces in contact with the outside, compared with the form in which the surface of the box body 11 is set as a whole plane, the two have a larger contact area with the external space of the electronic control box 10, that is, the heat exchange area between the electronic control box 10 and the outside is increased, thereby improving the heat dissipation efficiency.

[0054] In order to improve the tightness of the connection between the box cover 12 and the box body 11, please refer to Figure 2, a sealing groove 60 surrounding the periphery of the lid 12 can be provided between the lid 12 and the box body 11, and a sealing ring 61 can be placed in the sealing groove 60. It can be understood that the sealing groove 60 can be provided on the lid 12 or the box body 11, or the sealing groove 60 can be provided on both the lid 12 and the box body 11. In this way, when the lid 12 and the box body 11 are installed and fixed, the sealing ring 61 will be clamped between the lid 12 and the box body 11 and be squeezed to fill the gap between the lid 12 and the box body 11, realizing a sealed connection. The sealing ring 61 can be nitrile rubber (NBR), fluororubber (FKM), silica gel, polyurethane, etc., and the present application does not limit the specific material of the sealing ring 61. In addition, in some other embodiments, a sealant can also be applied to the contact part between the lid 12 and the box body 11 to form a sealing layer, or a hot melt adhesive can be used to seal the joint between the lid 12 and the box body 11, so as to realize the sealed connection between the lid 12 and the box body 11. Here, the present application does not specifically limit the sealed connection between the lid 12 and the box body 11.

[0055] To improve the sealing effect of the electronic control box 10, please refer to Figure 2 and Figure 3 , a sealant groove 16 is provided in the installation cavity 13. A first wire passing hole 17 and a second wire passing hole 18 are provided on the groove wall of the sealant groove 16, and the second wire passing hole 18 communicates with the outside. The electronic control board 20 is installed in the installation cavity 13. One end of the conducting wire 80 is connected to the electronic control board 20, and the other end sequentially passes through the first wire passing hole 17 and the second wire passing hole 18 and extends to the outside. To achieve a sealing effect, a sealing colloid 90 is provided in the sealant groove 16, and the sealing colloid 90 is used to block the gap between the conducting wire 80 and the second wire passing hole 18. Compared with the prior art in which the sealing is achieved by the interference fit between the conducting wire 80 and the wire passing hole and an additional sealing rubber ring is sleeved, in the present application, on the basis of providing the sealant groove 16, the sealing colloid 90 is further filled in the sealant groove 16. Since the sealant groove 16 can effectively restrict the flow of the sealing colloid 90 after the sealing colloid 90 is dispensed, the sealing colloid 90 stably maintains the state of wrapping the conducting wire 80 in the sealant groove 16 before the sealing colloid 90 is cured. Then, after the sealing colloid 90 is cured, the sealing colloid 90 forms a reliable wrapping effect in the circumferential direction of the conducting wire 80. In this way, the sealing colloid 90 is in close contact with the groove wall of the sealant groove 16 provided with the second wire passing hole 18, so that external liquid is difficult to flow into the installation cavity 13 from the gap between the second wire passing hole 18 and the conducting wire 80, thus realizing a stable and reliable sealing effect at the position where the conducting wire 80 passes through the box body 11.

[0056] Furthermore, since the sealing colloid 90 has a certain fluidity before curing, that is, before curing and stabilizing, a part of the sealing colloid 90 in the sealing groove 16 will flow into the gap between the outer peripheral surface of the conductive wire 80 and the pore wall of the second wire passing hole 18, thereby blocking the gap between the pore wall of the second wire passing hole 18 and the outer peripheral surface of the conductive wire 80, enhancing the sealing effect of the electronic control box 10. In addition, the cured sealing colloid 90 forms a flexible protective layer that can absorb external vibration and impact force. The sealing colloid 90 filled between the outer peripheral surface of the conductive wire 80 and the pore wall of the second wire passing hole 18 can reduce the impact on the conductive wire 80 and the pore wall, thereby improving the mechanical strength and stability of the conductive wire 80 and the pore wall.

[0057] It should be noted that the sealing colloid 90 can be a heat-curing adhesive or a UV-curing adhesive. A heat-curing adhesive is a colloid material that cures under heating conditions. This colloid material has good high-temperature resistance and chemical stability. The heat-curing adhesive can be hot-melt adhesive, heat-curing epoxy resin, heat-curing polyurethane, heat-curing acrylate, and so on. A UV-curing adhesive refers to a colloid material that cures by ultraviolet irradiation. This colloid material has the advantages of fast curing speed, no solvent volatilization, environmental protection, and so on. The UV-curing adhesive can be UV-curing acrylate resin, UV-curing epoxy resin, UV-curing polyurethane, UV-curing silica gel, and so on. Here, the present application does not specifically limit the material of the sealing colloid 90.

[0058] It should also be noted that since the sealing groove 16 is formed in the installation cavity 13 in the present application, on the one hand, the sealing groove 16 can restrain and fix the cured sealing colloid 90 and is not easily impacted by external forces. Therefore, the sealing colloid 90 is not likely to loosen, and the formed sealing structure is relatively reliable. And since the sealing colloid 90 is located inside, it has relatively less contact with the external environment. During long-term use, its own structure is not likely to age. Therefore, it can also ensure the long-term stability and reliability of the sealing structure at this place.

[0059] In some structural forms, please refer to Figure 3, a partition 14 is provided in the installation cavity 13. Among them, the partition 14 can be arranged in the installation groove of the box body 11. The partition 14 is connected to the groove wall of the installation groove and encloses a sealant groove 16 with the groove wall of the installation groove. The partition 14 and the box body 11 can be integrally formed by hot pressing or injection molding. In this way, the integrity of the partition 14 and the box body 11 can be improved. Of course, the partition 14 and the box body 11 can also be set as separate components and assembled by welding. The present application is not limited thereto. By providing a partition 14 in the installation cavity 13, the sealant groove 16 can be formed, with a compact structure and a simple production process. In some other embodiments, the sealant groove 16 can also be formed by the partial bottom wall of the installation groove being recessed. A rib can also be formed by protruding on the partial bottom wall of the installation groove. The rib and the groove side wall and bottom wall of the installation groove define the sealant groove 16. Here, the present application does not limit the specific forming form of the sealant groove 16.

[0060] Furthermore, the first wire passing hole 17 and the second wire passing hole 18 are arranged on opposite sides of the sealant groove 16. Specifically, the first wire passing hole 17 is located on the partition 14, while the second wire passing hole 18 is located on the cavity wall of the installation cavity 13, that is, the outer wall of the box body 11. Through such a design, the wiring of the conductive wire 80 is clearer and more orderly. The function of the first wire passing hole 17 is to introduce the conductive wire 80 into the sealant groove 16, while the second wire passing hole 18 enables the conductive wire 80 to extend smoothly to the outside and connect to the connecting wire of the external device. In addition, in the embodiment of the present application, when the contact surface between the box body 11 and the box cover 12 is sealed and connected, the sealant injection needle can pass through the second wire passing hole 18 to inject sealant into the sealant groove 16 to achieve the sealing effect of the electric control box 10; it is also possible to inject sealant into the sealant groove 16 to block the gap between the conductive wire 80 and the second wire passing hole 18 before the box body 11 and the box cover 12 are installed and fixed, and then install and fix the box body 11 and the box cover 12. Compared with the former injection method, the latter can observe the curing situation of the sealing colloid 90 to ensure the reliability of the sealing effect.

[0061] In order to facilitate the connection of the electronic control box assembly 1 to different external devices, multiple conductive wires 80 are provided. And each conductive wire 80 is provided with a corresponding first wire passing hole 17 and a second wire passing hole 18 to lead out different types of conductive wires 80 from inside the electronic control box 10. Among them, the types of the conductive wires 80 include but are not limited to power supply wires, compressor wires, fan wires, control wires, signal wires, etc. The type of the conductive wire 80 is determined according to specific application requirements. The power supply wire is used to connect to the power supply to provide electrical energy for the electronic control box assembly 1. The compressor wire is used to connect to the electric compressor to transmit electrical signals to drive the compressor to operate. The fan wire is used to connect to a blower or a fan to transmit electrical signals to the blower to achieve air volume adjustment. The control wire is used to transmit control signals, such as temperature sensor signals, switch signals, etc., to control the working state of external devices. The signal wire is used to transmit various sensor signals, monitoring signals or other specific signals for operations such as data acquisition, monitoring or feedback. In this way, the electronic control box assembly 1 can flexibly meet the connection requirements of different external devices and effectively transmit the required power and signals to achieve various functions and control operations.

[0062] Furthermore, please refer to Figure 3 , and a plurality of baffles 15 are further provided in the potting groove 16. Among them, the baffle 15 is connected to the bottom wall of the installation groove, and one end is connected to the side wall of the installation groove, and the other end is connected to the partition 14. The plurality of baffles 15 divide the potting groove 16 into a plurality of potting sub-grooves 161, that is, each conductive wire 80 corresponds to a potting sub-groove 161, and each potting sub-groove 161 corresponds to a first wire passing hole 17 and a second wire passing hole 18. The sealing colloid 90 is arranged in the potting sub-groove 161. The setting of the potting sub-groove 161 enables each conductive wire 80 to have an independent potting space, avoiding problems such as mutual interference or short circuit between different conductive wires 80 and effectively protecting the safety of the conductive wires 80. The division of the potting sub-groove 161 enables each conductive wire 80 to have a clear position. If a certain conductive wire 80 needs to be replaced or repaired, only the corresponding potting sub-groove 161 and the conductive wire 80 need to be processed, without affecting other conductive wires 80, which is convenient for management and maintenance. In addition, the setting of the potting sub-groove 161 can reduce the amount of injected glue, improve the curing efficiency, and further improve the production efficiency and reduce the cost.

[0063] And in order to facilitate the connection and cooperation of the conductive wire 80 with the connecting wire of the external device, the electronic control box 10 is further provided with a wiring groove 19 outside the installation cavity 13, and the wiring groove 19 communicates with the second wire passing hole 18. Please refer to Figure 5 and Figure 7, the electronic control box assembly 1 further includes a wiring cover plate 70. The wiring cover plate 70 is connected to the electronic control box 10 and covers the wiring groove 19 and the electronic control box 10 to enclose a wiring chamber 71. The wiring chamber 71 can effectively protect the wiring area, prevent interference or damage to the conductive wire 80 and the connection of the connecting wire by the external environment, and reduce wiring faults caused by external factors. In addition, a wire passing hole 72 communicating with the wiring chamber 71 is provided on the wiring cover plate 70 and / or the electronic control box 10. The connecting wire of the external device passes through the wire passing hole 72 and is connected to the conductive wire 80 in the wiring chamber 71 in a mating manner. It can be understood that there are multiple conductive wires 80, which are respectively connected to different connecting wires to connect to different external devices. Similarly, there are also multiple connecting wires, and each connecting wire is correspondingly provided with a wire passing hole 72. In this way, the cable wiring is more tidy and orderly, improving the maintainability and manageability of the system. In addition, the present application may further include a terminal block, which can facilitate the connection between the conductive wire 80 and the connecting wire, thereby facilitating the conduction of the circuit.

[0064] It should be noted that the wire passing hole 72 can be provided on the wiring cover plate 70 or the electronic control box 10. As a preferred implementation, the wire passing hole 72 can be provided between the wiring cover plate 70 and the electronic control box 10. That is, the wire passing hole 72 is composed of a first hole portion and a second hole portion, where the first hole portion is located on the wiring cover plate 70 and the second hole portion is located on the electronic control box 10. When the wiring cover plate 70 and the electronic control box 10 are installed and fixed, the wire passing hole 72 is formed. At this time, the cable of the connecting wire is located in the wire passing hole 72, thus simplifying the wire passing process of the connecting wire.

[0065] To further improve the safety and reliability of the wiring area, please continue to refer to Figure 5 and Figure 8 , a water baffle 194 is further provided in the wiring groove 19. The water baffle 194 divides the wiring groove 19 into an electrical appliance groove 191 and a connection groove 192. The conductive wire 80 and the connecting wire of the external device are connected in a mating manner in the electrical appliance groove 191. An installation portion 193 is provided in the connection groove 192, and a connection portion 73 is provided on the wiring cover plate 70. The installation portion 193 and the connection portion 73 are detachably connected in the connection groove 192. Among them, the wire passing hole 72 is located at one end close to the connection groove 192 and far from the electrical appliance groove 191. Specifically, the water baffle 194 divides the wiring groove 19 into two parts. The electrical appliance groove 191 is used to connect the connecting wire of the external device and the conductive wire 80 in a mating manner, and the connection groove 192 is used to be installed and connected to the wiring cover plate 70. With such a setting, when the wiring cover plate 70 is installed and connected to the wiring groove 19, it will not interfere with the wiring in the wiring area.

[0066] Furthermore, please refer to Figure 8In the direction from the electrical appliance slot 191 to the connection slot 192, the water baffle 194 blocks at least part of the threading hole 72, wherein the blocking here can be understood as blocking of the field of vision, that is, the projection of the threading hole 72 from the outside to the inside falls below the edge of the water baffle 194 on the side away from the bottom wall of the slot. Figure 5 As shown in the figure, the projection of the threading hole 72 from the outside to the inside falls on the middle of the water baffle 194. In this way, the water baffle 194 can effectively prevent moisture, dust or other impurities entering from the threading hole 72 from entering the electrical appliance slot 191, protect the connection ends of the conductive wire 80 and the connecting wire from interference from the external environment, and ensure the stability and firmness of the wiring.

[0067] In some structural forms, the mounting portion 193 is provided with a threaded connection column, and the connection portion 73 is provided with a fixing hole. A threaded member such as a screw or a bolt is passed through the fixing hole and fixed to the threaded connection column, so that the wiring cover plate 70 can cover the wiring slot 19 and be fixed to the electric control box 10. In this way, the fixing method is convenient and the production process is simple. Of course, in some other embodiments, the wiring cover plate 70 can also be fixed to the electric control box 10 by a snap connection.

[0068] Furthermore, the height of the threaded connection column is lower than the height between the water baffle 194 and the bottom wall of the wiring slot 19, and penetrates to the bottom wall of the electric control box 10. When the threaded member is fixed on the threaded connection column, there can be a certain gap. It can be understood that the moisture, dust or other impurities blocked by the water baffle 194 will be located in the connection slot 192. Since the height of the threaded connection column is lower than the height between the water baffle 194 and the bottom wall of the connection slot 192, the liquid can be discharged from the threaded connection column at this time. Of course, a water outlet can also be set in the connection slot 192 to discharge the liquid in the connection slot 192.

[0069] See also Figure 9, the electronic control board 20 is composed of a substrate 21 and a plurality of electronic components 22 mounted on the substrate 21. The substrate 21 is fixed in the installation cavity 13, and at least a part of the electronic components 22 extends into the accommodation groove 113. In some connection methods, the substrate 21 can be connected to the main body portion 111 in a detachable connection manner. In this way, when maintenance is required, after opening the box cover 12, the circuit board is still fixed on the box body 11, and the box body 11 is usually installed on the heating and ventilation equipment. This facilitates subsequent disassembly of the circuit board or direct observation of the circuit board, so as to more conveniently repair and replace the electronic components 22 on the substrate 21. In the embodiment of the present application, the specific installation method between the substrate 21 and the box body 11 is not limited. For example, it can be one of the fixed connection methods such as snap connection, screw connection, riveting, etc., and can be specifically adjusted according to the actual assembly situation. Fixing the substrate 21 on the main body portion 111 in the embodiment of the present application can prevent the electronic components 22 from shifting in the installation cavity 13, thereby avoiding interference phenomena such as extrusion and collision between the electronic components 22 and the inner wall of the accommodation groove 113, so as not to damage the electronic components 22.

[0070] It should be noted that the electronic component 22 includes an IPM (Intelligent Power Module), which is an advanced hybrid integrated power device integrating logic, control, detection, and protection functions, and it is one of the main electronic components 22 in the electronic control box 10. In addition, the electronic component 22 also includes regular components such as capacitors and inductors, and these components will generate more heat during operation. The electronic components 22 extending into the accommodation groove 113 in the present application mainly refer to these electronic components 22 that generate heat during operation. It can be understood that we can extend these electronic components 22 that generate relatively more heat into the accommodation groove 113. Since the protruding portion 112 increases the surface area of the electronic control box 10, the heat generated by the electronic components 22 in the accommodation groove 113 can be more efficiently heat-exchanged with the external air, improving the heat dissipation effect.

[0071] In addition, the accommodation groove 113 can also be designed with corresponding groove inner walls according to the external shape of the electronic component 22, so as to increase the contact area between the inner wall of the accommodation groove 113 and the electronic component 22, and further improve the heat exchange efficiency. For example, in the case of multiple electronic components 22, the accommodation groove 113 can be designed into multiple sub-grooves corresponding to the number of electronic components 22, and each sub-groove fits the outer contour of one electronic component 22. In this way, the accommodation groove 113 can not only provide individualized protection for each electronic component 22, avoiding mutual interference and chain reactions, but also quickly locate each electronic component 22 during the installation process, avoiding incorrect installation. Of course, two or three electronic components 22 can also be placed in one sub-groove in the accommodation groove 113, and the number of electronic components 22 in different sub-grooves can be the same or different. Of course, the shape of the accommodation groove 113 does not necessarily have to be designed exactly according to the external structure of the electronic component 22, as long as there is enough space for the electronic component 22 to enter the accommodation groove 113.

[0072] To improve the heat dissipation effect of the electronic control box assembly 1, a heat conductor 40 is also filled in the installation cavity 13. Please refer to Figure 6 and Figure 7 , the heat conductor 40 is filled between the outer wall of the electronic component 22 and the groove wall of the accommodation groove 113. The heat conductor 40 can conduct the heat generated when the electronic component 22 works to the box body 11, thereby improving the heat dissipation effect of the electronic component 22. In addition, the heat conductor 40 can provide sealed protection for the electronic component 22, preventing dust and condensate from affecting it, thereby improving the working stability of the electronic control box assembly 1, reducing the failure rate, and enhancing the safety performance of the electronic control box assembly 1. The heat conductor 40 can be made of materials such as silicone grease, silicone rubber, polymer-based thermal conductive adhesive, and metal powder thermal conductive adhesive. The present application does not limit the specific material of the heat conductor 40.

[0073] When the heat conductor 40 is configured as thermal conductive silicone, the thermal conductive silicone has good thermal conductivity and insulation properties, can effectively conduct heat, reduce the temperature of the electronic component 22, and at the same time, can effectively isolate the current and voltage between the electronic components 22, preventing electrical short circuits or breakdowns. Moreover, the thermal conductive silicone also has high temperature resistance performance and can maintain stable thermal conductivity in a high temperature environment. It also has flexibility and can fill irregular surfaces or micro gaps, improving heat conduction and relieving thermal stress. In addition, the thermal conductive silicone has no corrosion to the electronic component 22 and has good repair ability, and the sealed electronic component 22 can be conveniently taken out for repair and replacement.

[0074] Of course, the heat conductor 40 can also be used to fill the entire installation cavity 13, protect the various components within the installation cavity 13, and enhance the sealing performance of the electronic control box 10. When the electronic component 22 operates within the installation cavity 13, the relatively warm air surrounding it will come into contact with the surface of the relatively cooler components within the electronic control box 10, resulting in the formation of condensation. The accumulation of condensation may damage the electronic control box 10 or even cause a short circuit. Filling the heat conductor 40 into the installation cavity 13 can completely wrap the electronic component 22, improve the heat dissipation effect of the electronic control box 10, significantly reduce the formation of internal condensation, and thus enhance the safety of the electronic control box 10. The heat-conducting silicone can be injected by means of an injection needle, or injected through multiple prefabricated holes reserved on the substrate 21.

[0075] To better improve the heat dissipation effect of the electronic component 22, please continue to refer to Figure 7 , in some embodiments, a heat conducting plate 50 is further fixed on the substrate 21. Such a heat conducting plate 50 is usually made of a metal plate or alloy plate with good heat conducting performance, such as an aluminum plate, a copper plate, or an aluminum alloy plate, to improve the heat conduction efficiency. One side of the heat conducting plate 50 is fixedly connected to the substrate 21, and the other side is attached to the inner wall surface of the main body portion 111. Specifically, the side of the heat conducting plate 50 facing away from the substrate 21 abuts against the inner wall surface of the concave portion 114. To ensure that the heat conducting plate 50 is firmly and reliably installed on the substrate 21 and better achieve heat conduction, a heat conducting silicone grease layer 51 is also coated between the substrate 21 and the heat conducting plate 50. Such a heat conducting silicone grease layer 51 is an insulating heat transfer material, which can not only isolate the substrate 21 and the heat conducting plate 50 and ensure their heat conduction performance, but also adhere between the heat conducting plate 50 and the inner wall surface of the main body portion 111 to further enhance the heat conduction efficiency and prevent the heat conducting plate 50 from directly contacting the inner wall surface of the main body portion 111 and causing overheating. In addition, the heat conducting plate 50 abuts against the inner wall surface of the concave portion 114, which can reduce the distance between the heat conducting plate 50 and the main body portion 111, thereby reducing the thickness of the heat conducting plate 50, reducing the production cost, and at the same time reducing the overall volume of the electronic control box 10.

[0076] Please refer to Figure 7 and Figure 9 , in some structural forms, the shape of the heat conducting plate 50 can be oblong, so that it can contact the main body portion 111 more comprehensively and increase the heat exchange area. In addition, the plate body of the heat conducting plate 50 can also be a carrier of other shapes, such as a cylinder, a cuboid, or a cube, etc. The connection manner between the heat conducting plate 50 and the substrate 21 can adopt a detachable connection, such as a slot or a buckle form, for easy replacement of the heat conducting plate 50. Of course, a fixed connection, such as riveting or screwing, etc., can also be adopted. This application does not limit the shape and connection manner of the heat conducting plate 50.

[0077] And to further improve the heat dissipation effect of the electronic control box 10, a heat dissipating member 30 is also fixed on the outer side surface of the box body 11. Please refer toFigure 10 and Figure 11 The heat sink 30 includes a first heat dissipation portion 33 and a second heat dissipation portion 34. The first heat dissipation portion 33 is in contact with the outer wall surface of the protruding portion 112, and the second heat dissipation portion 34 is embedded in the receiving groove 115. The function of the heat sink 30 is to dissipate the heat transmitted by the box body 11 to the outside. The way it is fixed to the box body 11 can be screwing the protruding portion 112 and / or the concave portion 114, or other forms such as snap connection. The second heat dissipation portion 34 being embedded in the receiving groove 115 helps to further fix the heat sink 30 and can quickly position the heat sink 30 during installation. In addition, the second heat dissipation portion 34 can better exchange heat with the heat conducting plate 50 on the inner wall surface of the concave portion 114, thereby improving the heat exchange efficiency, saving the manufacturing materials of the box body 11, and reducing the cost.

[0078] To facilitate the installation of the second heat dissipation portion 34 on the outer side surface of the electric control box 10, please refer to Figure 12 and Figure 13 The second heat dissipation portion 34 includes a first extension portion 341 and a second extension portion 342. The first extension portion 341 is arranged parallel to the box body 11, and the second extension portion 342 is connected to the end of the first extension portion 341 and bends to one side. Specifically, the second heat dissipation portion 34 includes at least two second extension portions 342, and these two second extension portions 342 are respectively connected to both ends of the first extension portion 341 and bend to the same side. The first heat dissipation portion 33 and the first extension portion 341 form a stepped structure in the height direction of the electric control box 10, and the height of the first heat dissipation portion 33 is higher than that of the first extension portion 341. Such a design is to adapt to the height difference between the protruding portion 112 and the concave portion 114 in the height direction of the electric control box 10, so that the first heat dissipation portion 33 and the second heat dissipation portion 34 can more comprehensively contact and conduct heat with the box body 11 to achieve the heat dissipation effect. By bending and connecting the second heat dissipation portion 34 into the bent first extension portion 341 and second extension portion 342, while ensuring that the second heat dissipation portion 34 has sufficient length, the overall length of the second heat dissipation portion 34 is reduced. This not only facilitates the heat dissipation cooperation between the second heat dissipation portion 34 and the receiving groove 115, but also can reduce the overall volume of the electric control box assembly 1.

[0079] In some embodiments, the heat dissipation member 30 is configured as a microchannel heat exchanger, which is composed of a connected header 31 and heat exchange flat tubes 32. The heat exchange flat tubes 32 are provided with the aforementioned first heat dissipation portion 33 and second heat dissipation portion 34, and form a plurality of microchannels 321 arranged side by side. The cross-section of each microchannel 321 can be rectangular and has a certain thickness, which can be selected as 0.2 mm or 0.5 mm to meet the pressure resistance and heat resistance requirements of the microchannels 321. Of course, the cross-sectional shape of the microchannels 321 can also be other forms, such as circular, triangular, trapezoidal, elliptical or other irregular shapes. The interior of the microchannels 321 has a large number of small channels, which can increase the surface area for heat transfer, improve the heat exchange efficiency, and because the size of the internal channels of the microchannels 321 is small, the flow velocity of the fluid in the channels is relatively fast, thus generating a stronger turbulence effect. The turbulence effect can increase the heat and mass transfer between the fluid and the channel wall, and improve the heat exchange efficiency. In addition, the microchannels 321 also have the advantages of compact structure, high pressure resistance and material saving.

[0080] In some other embodiments, the heat dissipation member 30 can be in the form of a fin radiator. The fin radiator consists of a main body and a plurality of metal fins. The main body is usually a plate member that can be attached to the surface of the electronic control box 10 and transfer the heat on the surface to the fins. The fin radiator can allow air to flow through the fins through natural convection or an auxiliary fan, etc., so as to take away the heat and realize the heat dissipation of the electronic control box assembly 1. In addition, a thermal contact agent can be used between the surface of the electronic control box 10 and the fins to improve the heat conduction efficiency. It can be understood that the first heat dissipation portion 33 and the second heat dissipation portion 34 in the above description can be composed of a plurality of fin radiators. Of course, the heat dissipation member 30 can also be other types of radiators, and the present application does not make specific limitations in this regard.

[0081] In order to enable the refrigerant to quickly circulate and exchange heat inside the header 31, the header 31 is designed in the shape of a hollow cylinder, and prisms, square columns, etc. can also be selected. This can effectively provide the circulation of the refrigerant into the heat exchange flat tubes 32. As the choice of refrigerant, new flammable refrigerants can be used, such as R32, R290, etc. These refrigerants have the advantages of high thermal conductivity, large latent heat of vaporization, good fluidity, low conveying pressure, etc. At least two headers 31 are oppositely arranged on both sides of the heat exchange flat tubes 32. Each oppositely arranged header 31 is provided with at least two first collection ports 311 and at least two second collection ports 312 to ensure that the refrigerant can fully cover the entire surface of the heat exchange flat tubes 32, so as to achieve an efficient heat exchange process.

[0082] Please refer to Figure 12 and Figure 13, both ends of the first heat dissipation part 33 are communicated with the first manifold 311, and both ends of the second heat dissipation part 34 are communicated with the second manifold 312, that is, the second extension part 342 is communicated with the second manifold 312. In order to reduce the leakage of the refrigerant, the connection method is selected to be fixed by welding. This method is firm and reliable, and resistant to pressure and temperature. In this way, the manifold 31 can introduce the refrigerant into the microchannels 321 inside the heat exchange flat tube 32 through the first manifold 311 and the second manifold 312, so that the refrigerant can flow in the first heat dissipation part 33 and the second heat dissipation part 34, thereby increasing the heat exchange area between the flowing refrigerant and the box body 11 and improving the heat exchange efficiency. At the same time, the stepped height difference formed between the first heat dissipation part 33 and the second heat dissipation part 34 can enable the refrigerant flow to naturally flow along the gradient direction, avoiding the generation of turbulent flow phenomena. In addition, the long sides of the first manifold 311 and the second manifold 312 can be parallel to the axial direction of the manifold 31. In this way, the first manifold 311 and the second manifold 312 on the manifold 31 can be axially punched, making full use of the wall material of the manifold 31 to achieve the punching and flanging depth, thereby increasing the contact area when the manifold 31 and the heat exchange flat tube 32 are welded, improving the pressure resistance of the solder joints, avoiding the leakage of the refrigerant flowing between the manifold 31 and the heat exchange flat tube 32, and reducing the production and forming cost.

[0083] In some other structural forms, the heat dissipation member 30 can also be entirely arranged in the installation cavity 13 of the electronic control box 10 to enhance the overall structural stability of the electronic control box assembly 1. In addition, part of the heat dissipation member 30 can be arranged in the installation cavity 13 of the electronic control box 10, and the other part protrudes outside the electronic control box 10 for connecting external pipelines. That is to say, the specific position of the heat dissipation member 30 can be relatively determined according to the actual position of the electronic component 22, and no specific limitation is imposed on the position of the heat dissipation member 30 in this application.

[0084] This application also proposes a heating and ventilation equipment, which includes but is not limited to equipment such as air conditioners, multi-connected units, heat pumps, gas boilers, floor heating, water heaters, etc. The heating and ventilation equipment includes the above-mentioned electronic control box assembly 1. Because the electronic control box assembly 1 has excellent sealing performance and heat dissipation effect, it can avoid the influence of external factors on the electronic components 22 therein and ensure its stable operation. At the same time, it can also effectively reduce the heat generated during operation, reduce the fire risk, and improve the safety of the entire heating and ventilation equipment during operation. Since this heating and ventilation system adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated one by one here.

[0085] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application 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. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation to the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0086] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electric control box assembly, characterized in that, Including: An electronic control box, including a box body and a box cover. The box cover and the box body enclose to form an installation cavity. A sealant groove is provided in the installation cavity. A first wire passing hole and a second wire passing hole are provided on the groove wall of the sealant groove. The second wire passing hole is communicated with the outside. An electronic control board, installed in the installation cavity. A conducting wire, one end of which is connected to the electronic control board, and the other end sequentially passes through the first wire passing hole and the second wire passing hole and extends to the outside. And A sealing colloid, arranged in the sealant groove and blocking the gap between the conducting wire and the second wire passing hole.

2. The electronic control box assembly according to claim 1, wherein A partition board is arranged in the installation cavity. The partition board is connected to the cavity wall of the installation cavity and encloses with the cavity wall of the installation cavity to form the sealant groove. The first wire passing hole and the second wire passing hole are arranged on opposite sides of the sealant groove.

3. The electronic control box assembly according to claim 1, characterized in that There are multiple conducting wires, and the first wire passing hole and the second wire passing hole are arranged in one-to-one correspondence with the conducting wires.

4. The electronic control box assembly according to claim 3, wherein Multiple baffles are further arranged in the sealant groove. The multiple baffles divide the sealant groove into multiple sealant sub-grooves. Each sealant sub-groove is correspondingly provided with a first wire passing hole and a second wire passing hole. The sealing colloid is arranged in the sealant sub-groove.

5. The electronic control box assembly according to any one of claims 1 to 4, characterized in that The electronic control box is further provided with a wiring groove outside the installation cavity. The wiring groove is communicated with the second wire passing hole. The electronic control box assembly further includes a wiring cover plate. The wiring cover plate is connected to the electronic control box and covers the wiring groove to enclose with the electronic control box to form a wiring chamber. A wire passing hole communicating with the wiring chamber is provided on the wiring cover plate and / or the electronic control box.

6. The electronic control box assembly according to claim 5, wherein, A water blocking plate is further arranged in the wiring groove. The water blocking plate divides the wiring groove into an electrical appliance groove and a connection groove. The connecting wire of an external device is connected in cooperation with the conducting wire in the electrical appliance groove. The electronic control box is provided with an installation part in the connection groove. The wiring cover plate is provided with a connection part. The installation part and the connection part are detachably connected in the connection groove.

7. The electronic control box assembly according to claim 6, characterized in that, In the direction from the electrical appliance groove to the connection groove, the water blocking plate blocks at least part of the wire passing hole.

8. The electronic control box assembly according to any one of claims 1 to 4, characterized in that, The electronic control box assembly further includes a heat dissipation part. The box body includes a main body part and a protruding part extending outward from the main body part. A receiving groove communicated with the installation cavity is formed in the protruding part. The electronic control board assembly includes a substrate and a plurality of electronic components installed on the substrate. The substrate is fixed in the installation cavity, and at least a part of the plurality of electronic components extends into the receiving groove. The heat dissipation part is fixed on the outer side surface of the box body.

9. The electronic control box assembly according to claim 8, characterized in that, It further includes a heat conducting body. The heat conducting body is filled between the outer wall of the electronic component and the groove wall of the receiving groove.

10. The electronic control box assembly according to claim 8, characterized in that, It further includes a heat conducting plate. One side of the heat conducting plate is fixedly connected to the substrate, and the other side abuts against the inner wall surface of the main body part.

11. The electronic control box assembly according to claim 10, wherein, It further includes a heat conducting silicone grease layer. The heat conducting silicone grease layer is bonded between the substrate and the heat conducting plate.

12. The electronic control box assembly according to claim 10 or 11, characterized in that, An inner concave part extending towards the installation cavity is further arranged on the main body part. The side of the heat conducting plate facing away from the substrate abuts against the inner wall surface of the inner concave part.

13. The electronic control box assembly according to claim 12, wherein, A receiving groove with an opening communicating with the outside is formed in the concave portion. The heat dissipation member includes a first heat dissipation portion and a second heat dissipation portion. The first heat dissipation portion contacts the outer wall surface of the protruding portion, and the second heat dissipation portion is embedded in the receiving groove.

14. The electronic control box assembly according to claim 13, wherein, The heat dissipation member is a microchannel heat exchanger and includes a header pipe and a flat heat exchange pipe that are connected and communicate with each other. The first heat dissipation portion and the second heat dissipation portion are provided on the flat heat exchange pipe.

15. The electronic control box assembly according to any one of claims 1 to 4, characterized in that A sealing groove surrounding the periphery of the lid is provided between the lid and the box body. A sealing ring is provided in the sealing groove, and opposite sides of the sealing ring are respectively sealed against the lid and the box body.

16. A heating, ventilation and air conditioning (HVAC) device, characterized in that, It includes the electric control box assembly according to any one of claims 1 to 15.

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