Electric control box and air conditioner with same

Abstract

The electric control box comprises a box body assembly, the box body assembly comprises a box body, an air duct cover and a first threading structure, the air duct cover is arranged outside the box body, a heat dissipation air duct is formed between the air duct cover and the box body, and an inlet and an outlet of the heat dissipation air duct are located on the two sides of the air duct cover respectively in the first direction. The first threading structure is located on one side of the air duct cover in the second direction, the second direction is perpendicular to the first direction, a mounting opening is formed in the box body, and the first threading structure is sealed in the mounting opening and defines a first threading hole. According to the electric control box provided by the embodiment of the utility model, the first threading hole is arranged for wiring, so that the sealing performance of the wiring position of the electric control box can be improved; the heat dissipation air channel is formed between the air channel cover and the box body, heat of the box body is rapidly taken away by the heat dissipation air flow, and the heat dissipation speed of the closed box body can be improved, so that the sealing performance of the box body is ensured, the heat dissipation speed of the electric control box is improved, and the working reliability of the electric control box is improved.

Description

Technical Field

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

[0002] Some air conditioners in the related art use flammable refrigerants. When the refrigerant leaks and comes into contact with the electric control box, it is likely to cause an explosion risk. In addition, when the electric control box generates a large amount of heat during operation, it will affect the working reliability of the electric control box. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides an electric control box, which has good heat dissipation performance and better sealing performance, and can improve the working reliability of the electric control box.

[0004] The utility model also provides an air conditioner having the above electric control box.

[0005] The electric control box according to the first aspect of the utility model includes: a box body assembly, including a box body, an air duct cover and a first wire threading structure. The air duct cover is arranged outside the box body, and a heat dissipation air duct is formed between the air duct cover and the box body. The inlet and outlet of the heat dissipation air duct are respectively located on both sides of the air duct cover along a first direction. The first wire threading structure is located on one side of the air duct cover in a second direction, and the second direction is perpendicular to the first direction. The box body has an installation opening, and the first wire threading structure is sealed at the installation opening and defines a first wire threading pore.

[0006] According to the electric control box of the utility model, by providing a first wire threading pore at the first wire threading structure, the first wire threading pore is closely attached to the wire body, which can improve the sealing performance at the wire routing part of the electric control box. And by forming a heat dissipation air duct between the air duct cover and the box body, the heat dissipation air flow can accelerate the heat removal of the box body, which can improve the heat dissipation speed of the sealed box body, thereby improving the heat dissipation speed of the electric control box while ensuring the sealing performance of the box body, and improving the working reliability of the electric control box.

[0007] In some embodiments, the air duct cover includes a first cover part and a second cover part. The second cover part is arranged on the side of the first cover part close to the inlet of the heat dissipation air duct. The first cover part is opposite to the first wire threading structure, and the second cover part is staggered with the first wire threading structure. The width of the second cover part in the second direction is greater than the width of the first cover part in the second direction.

[0008] In some embodiments, the air duct cover includes a first cover portion and a third cover portion. The third cover portion is disposed on a side of the first cover portion close to the outlet of the heat dissipation air duct. The first cover portion faces the first wire threading structure, and the third cover portion is offset from the first wire threading structure. The width of the third cover portion in the second direction is greater than the width of the first cover portion in the second direction.

[0009] In some embodiments, a first opening area and a second opening area are formed on the box body. At least part of the first opening area is opened on the part of the box body that participates in defining the heat dissipation air duct. The second opening area is located downstream of the first opening area along the ventilation direction of the heat dissipation air duct. The electronic control box further includes: a first radiator disposed at the first opening area and including a first heat dissipation portion extending into the heat dissipation air duct; a second radiator disposed at the second opening area and at least part of which is located outside the box body, and the part of the second radiator located outside the box body is disposed at the outlet of the heat dissipation air duct.

[0010] In some embodiments, the box body includes a first box cover. The first box cover is made of a non-metallic material and forms the first opening area and the second opening area. The electronic control box includes a circuit board disposed inside the box body. The circuit board includes a substrate and a first passive device and a first power device disposed on the substrate. The first passive device is disposed corresponding to the first opening area, and the first power device is disposed corresponding to the second opening area. The first box cover is in the form of a concave-convex structure, protruding at the location where the first opening area is provided and recessed at the location where the second opening area is provided.

[0011] In some embodiments, the first radiator is disposed on the first box cover and transfers heat in contact with the first passive device through a first heat conduction medium. The second radiator is disposed on the circuit board and transfers heat in contact with the first power device through a second heat conduction medium. The second radiator penetrates through the second opening area; and / or, the first box cover is a plastic material part.

[0012] In some embodiments, the box body has a wiring operation port. The installation port is located at the edge of the wiring operation port. The first wire threading structure is a sealing rubber ring and is embedded in the installation port. The box body assembly further includes an operation port cover plate, and the operation port cover plate is installed on the box body and covers the wiring operation port and the first wire threading structure.

[0013] In some embodiments, both ends of the operation port cover plate in the first direction are respectively provided with buckles, the buckles extend towards the direction of the box body and are in snap-fit connection with the box body, the first wire threading structure is located at one side edge of the wiring operation port in the third direction, the third direction is perpendicular to the second direction and the first direction respectively, and the first wire threading structure is located between the buckles at both ends in the first direction.

[0014] In some embodiments, the air duct cover includes a first cover part, a third cover part and a fourth cover part, the third cover part is arranged on one side of the first cover part close to the outlet of the heat dissipation air duct, the fourth cover part is arranged on one side of the third cover part close to the outlet of the heat dissipation air duct, the first cover part is opposite to the first wire threading structure, the third cover part is opposite to the buckle at one end close to the outlet of the heat dissipation air duct, the fourth cover part is staggered with the operation port cover plate, the width of the fourth cover part in the second direction is greater than the width of the third cover part in the second direction, and the width of the third cover part in the second direction is greater than the width of the first cover part in the second direction.

[0015] In some embodiments, the first wire threading structure is located at one side edge of the wiring operation port in the third direction, the third direction is perpendicular to the second direction and the first direction respectively, the first wire threading structure defines a first wire threading pore that penetrates along the third direction and can be expanded by a wire body, the box body assembly further includes a second wire threading structure, the second wire threading structure is located at one side edge of the wiring operation port in the first direction close to the inlet of the heat dissipation air duct, and defines a second wire threading pore that penetrates along the first direction and can be expanded by a wire body, and the operation port cover plate also covers the second wire threading structure.

[0016] In some embodiments, the first wire threading pore penetrates the first wire threading structure along the third direction and towards the direction of the operation port cover plate, the first wire threading structure has a first hollow hole that opens towards the direction of the operation port cover plate, the operation port cover plate has a first convex part that extends towards the direction of the box body, and the first convex part extends into the expanded first wire threading pore and the first hollow hole; and / or, the second wire threading pore penetrates the second wire threading structure along the first direction and towards the direction of the operation port cover plate, the second wire threading structure has a second hollow hole that opens towards the direction of the operation port cover plate, the operation port cover plate has a second convex part that extends towards the direction of the box body, and the second convex part extends into the expanded second wire threading pore and the second hollow hole.

[0017] The air conditioner according to the second aspect of the present invention includes an electric control box according to the first aspect of the present invention.

[0018] According to the air conditioner of the present utility model, by providing the electric control box of the above first aspect, the electric control box has good heat dissipation performance and good sealing performance, which can improve the working reliability of the air conditioner.

[0019] In some embodiments, the electric control box is disposed in the outdoor unit of the air conditioner. The outdoor unit includes a housing and a middle partition disposed inside the housing. The middle partition divides the space inside the housing into a compressor chamber and a blower chamber on both sides of the middle partition. The electric control box is disposed at the middle partition, and the inlet of the heat dissipation air duct communicates with the compressor chamber, and the outlet of the heat dissipation air duct communicates with the blower chamber.

[0020] 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 learned through the practice of the present utility model. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of an electric control box according to an embodiment of the present utility model;

[0022] Figure 2 is an exploded structural diagram of an electric control box according to an embodiment of the present utility model;

[0023] Figure 3 is a top view of an electric control box according to an embodiment of the present utility model;

[0024] Figure 4 is a bottom view of an electric control box according to an embodiment of the present utility model;

[0025] Figure 5 is according to Figure 4 the A-A sectional view of the example shown;

[0026] Figure 6 is a top view of the electric control box with the air duct cover hidden according to an embodiment of the present utility model;

[0027] Figure 7 is a schematic structural diagram of an operation port cover plate according to an embodiment of the present utility model;

[0028] Figure 8 is a schematic structural diagram of the outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0029] Figure 9 is a partial structural schematic diagram of the outdoor unit according to an embodiment of the present utility model.

[0030] Reference Signs:

[0031] Outdoor unit 1000;

[0032] Electric control box 100; First direction X; Second direction Y; Third direction Z;

[0033] Box body assembly 1;

[0034] Box body 11; Installation opening 11a; Wiring operation opening 11b; First opening area S1; Second opening area S2; First box cover 111; Second box cover 112;

[0035] Air duct cover 12; Heat dissipation air duct 12a; Inlet 12a1 of the heat dissipation air duct; Outlet 12a2 of the heat dissipation air duct; First cover part 121; Width W1 of the first cover part in the second direction; Second cover part 122; Width W2 of the second cover part in the second direction; Third cover part 123; Width W3 of the third cover part in the second direction; Fourth cover part 124; Width W4 of the fourth cover part in the second direction;

[0036] First wire threading structure 13; Sealing rubber ring 13a; First wire threading pore 131; First hollow hole 132;

[0037] Operation opening cover plate 14; Buckle 141; First protrusion part 142; Second protrusion part 143;

[0038] Second wire threading structure 15; Second wire threading pore 151; Second hollow hole 152;

[0039] First radiator 2;

[0040] Second radiator 3;

[0041] Circuit board 4; Substrate 41; First passive device 42; First power device 43;

[0042] Shell 200; Pressing cavity 201; Fan cavity 202; Middle partition board 300. Detailed implementation manners

[0043] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0044] 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, the components and settings of specific examples are described below. Of course, they are merely 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 be aware of the applicability of other processes and / or the use of other materials.

[0045] The electronic control box 100 according to the embodiment of the first aspect of the present utility model will be described below with reference to the accompanying drawings.

[0046] The electronic control box 100 according to the embodiment of the present utility model, as Figure 1 and Figure 2 shown, the box body assembly 1 includes: a box body 11, an air duct cover 12 and a first wire threading structure 13, as Figure 5 shown, the air duct cover 12 is provided outside the box body 11, and a heat dissipation air duct 12a is formed between the air duct cover 12 and the box body 11. The inlet 12a1 and the outlet 12a2 of the heat dissipation air duct 12a are respectively located on both sides of the air duct cover 12 along the first direction X, as Figure 3 shown, the first wire threading structure 13 is located on one side of the air duct cover 12 in the second direction Y, and the second direction Y is perpendicular to the first direction X, as Figure 2 and Figure 3 shown, the box body 11 has an installation opening 11a, and the first wire threading structure 13 is sealed in the installation opening 11a and defines a first wire threading pore 131.

[0047] A heat dissipation air duct 12a is formed between the air duct cover 12 and the box body 11. A heat dissipation air flow flows in the heat dissipation air duct 12a, which can accelerate the removal of the heat of the box body 11, improve the heat dissipation speed of the sealed box body 11, and thus improve the heat dissipation performance of the electronic control box 100.

[0048] The first wire threading structure 13 is located on one side of the air duct cover 12 in the second direction Y, which can reduce the installation interference between the first wire threading structure 13 and the air duct cover 12 and improve the assembly efficiency; and the arrangement of the first wire threading structure 13 is staggered from the extension direction of the heat dissipation air duct 12a, reducing the interference of the first wire threading structure 13 on the heat dissipation air duct 12a and facilitating the flow of the air flow in the heat dissipation air duct 12a.

[0049] The first wire threading structure 13 defines a first wire threading aperture 131. The wire body extending into the box body 11 or the wire body extending out of the box body 11 passes through the box body 11 through the first wire threading aperture 131. The first wire threading structure 13 can limit the routing of the wires, improving the regularity of the wire routing. Moreover, the first wire threading structure 13 is sealed and installed at the installation opening 11a. By using the first wire threading aperture 131 thereon to pass the wires, the sealing performance of the box body 11 can be improved, and the entry of flammable refrigerant or water into the box body 11 can be reduced, enhancing the working safety of the electric control box 100.

[0050] Exemplarily, the "wire threading aperture" can be formed as a perforated structure that penetrates the wire threading structure along the extending direction of the wire body, so that sealing can be simply achieved through the interference fit between the perforation and the wire body. Or exemplarily, the "wire threading aperture" can also be formed as a gap structure that not only penetrates the wire threading structure along the extending direction of the wire body but also penetrates the wire threading structure in the radial direction of the wire body, so that the wire body can be snapped into the wire threading aperture in the radial direction. In this way, the end of the wire body with the connector can also be easily fitted with the wire threading structure, thus improving the convenience of assembly.

[0051] According to the electric control box 100 of the embodiment of the present invention, by providing the first wire threading aperture 131 at the first wire threading structure 13, and the first wire threading aperture 131 being in close fit with the wire body, the sealing performance at the wire routing of the electric control box 100 can be improved; and by forming a heat dissipation air duct 12a between the air duct cover 12 and the box body 11, the heat dissipation air flow accelerates the removal of the heat of the box body 11, and the heat dissipation speed of the sealed box body 11 can be improved. Thus, while ensuring the sealing performance of the box body 11, the heat dissipation speed of the electric control box 100 is improved, enhancing the working reliability of the electric control box 100.

[0052] In some embodiments of the present invention, as Figure 3 shown, the air duct cover 12 includes a first cover portion 121 and a second cover portion 122. The second cover portion 122 is provided on the side of the first cover portion 121 close to the inlet 12a1 of the heat dissipation air duct. The first cover portion 121 faces the first wire threading structure 13, and the second cover portion 122 is offset from the first wire threading structure 13. The width W2 of the second cover portion 122 in the second direction Y is greater than the width W1 of the first cover portion 121 in the second direction Y.

[0053] The air duct cover 12 is arranged to avoid the first wire threading structure 13. The first wire threading structure 13 is located on one side of the air duct cover 12 in the second direction Y. The first cover portion 121 of the air duct cover 12 faces the first wire threading structure 13 in the second direction Y. Therefore, the width W1 of the first cover portion 121 in the second direction Y is smaller than the width W2 of the second cover portion 122 in the second direction Y.

[0054] Compared with the design of moving the first wire threading structure away from the air duct cover in the second direction to avoid the air duct cover, in the embodiment of the present utility model, by shortening the size of the first cover portion 121 and keeping the first wire threading structure 13 in place, the volume of the box body assembly 1 can be reduced, which is beneficial to the layout of the electric control box 100.

[0055] Compared with the design of reducing the overall size of the air duct cover away from the first wire threading structure in the second direction, in the embodiment of the present utility model, by only shortening the size of the first cover portion 121 opposite to the first wire threading structure 13 and retaining the size of the second cover portion 122 near the inlet 12a1 of the heat dissipation air duct, the air inlet area of the heat dissipation air duct 12a can be increased, which is beneficial to increasing the air intake volume of the heat dissipation air duct 12a, and thus the heat dissipation speed of the electric control box 100 can be improved.

[0056] In some embodiments of the present utility model, as Figure 3 shown, the air duct cover 12 includes a first cover portion 121 and a third cover portion 123. The third cover portion 123 is disposed on one side of the first cover portion 121 close to the outlet 12a2 of the heat dissipation air duct. The first cover portion 121 is opposite to the first wire threading structure 13, and the third cover portion 123 is offset from the first wire threading structure 13. The width W3 of the third cover portion 123 in the second direction Y is greater than the width W1 of the first cover portion 121 in the second direction Y.

[0057] The air duct cover 12 is arranged to avoid the first wire threading structure 13. The first wire threading structure 13 is located on one side of the air duct cover 12 in the second direction Y. The first cover portion 121 of the air duct cover 12 is opposite to the first wire threading structure 13 in the second direction Y. Therefore, the width W1 of the first cover portion 121 in the second direction Y is smaller than the width W3 of the third cover portion 123 in the second direction Y.

[0058] Compared with the design of moving the first wire threading structure away from the air duct cover in the second direction to avoid the air duct cover, in the embodiment of the present utility model, by shortening the size of the first cover portion 121 and keeping the first wire threading structure 13 in place, the volume of the box body assembly 1 can be reduced, which is beneficial to the layout of the electric control box 100.

[0059] Compared with the design of reducing the overall size of the air duct cover away from the first wire threading structure in the second direction, in the embodiment of the present utility model, by only shortening the size of the first cover portion 121 opposite to the first wire threading structure 13 and retaining the size of the third cover portion 123 near the outlet 12a2 of the heat dissipation air duct, the flow area of the heat dissipation air duct 12a can be increased, which is beneficial to increasing the contact area between the heat dissipation air flow and the box body 11, and the heat dissipation effect of the electric control box 100 can be improved. And when the air flow in the heat dissipation air duct 12a flows from the position opposite to the first cover portion 121 to the position opposite to the third cover portion 123, the flow area increases and the air flow velocity slows down, which is beneficial to the full heat exchange between the air flow and the box body 11.

[0060] In some embodiments of the present utility model, as Figure 5 and Figure 6 shown, a first opening area S1 and a second opening area S2 are formed on the box body 11. At least part of the first opening area S1 is opened on the part of the box body 11 that participates in defining the heat dissipation air duct 12a, and the second opening area S2 is located downstream of the first opening area S1 along the ventilation direction of the heat dissipation air duct 12a.

[0061] As Figure 5 and Figure 6 shown, the electric control box 100 further includes: a first radiator 2 and a second radiator 3. The first radiator 2 is disposed at the first opening area S1 and includes a first heat dissipation part extending into the heat dissipation air duct 12a; the second radiator 3 is disposed at the second opening area S2 and at least part of it is located outside the box body 11, and the part of the second radiator 3 located outside the box body 11 is disposed at the outlet 12a2 of the heat dissipation air duct.

[0062] By providing the first opening area S1 on the box body 11, providing the first radiator 2 at the first opening area S1, and by providing the second opening area S2 on the box body 11 and providing the second radiator 3 at the second opening area S2, the first radiator 2 and the second radiator 3 have better heat conduction performance than the box body 11, and the heat in the box body 11 can be quickly exported outside the box body 11 through the first radiator 2 and the second radiator 3, improving the heat dissipation speed of the electric control box 100.

[0063] The first radiator 2 has a first heat dissipation part extending into the heat dissipation air duct 12a, and there is a heat dissipation air flow in the heat dissipation air duct 12a, which can quickly take away the heat of the first radiator 2 and further accelerate the heat transfer speed of the first radiator 2.

[0064] After the heat dissipation air flow in the heat dissipation air duct 12a exchanges heat with the first radiator 2, the temperature of the heat dissipation air flow is still lower than the temperature of the second radiator 3. Therefore, by disposing the part of the second radiator 3 located outside the box body 11 at the outlet 12a2 of the heat dissipation air duct, the air flow that has dissipated heat from the first radiator 2 through the heat dissipation air duct 12a can be used to dissipate heat from the second radiator 3 again, realizing secondary utilization. While accelerating the heat dissipation speed of the second radiator 3, costs can be saved.

[0065] In some embodiments of the present utility model, as Figure 2 and Figure 6 shown, the box body 11 includes a first box cover 111. The first box cover 111 is made of non-metallic material and forms the first opening area S1 and the second opening area S2.

[0066] The first box cover 111 is made of a non-metallic material, which can improve the electrical safety of the electronic control box 100. However, the thermal conductivity of the first box cover 111 is relatively poor compared to that of a metallic material. Therefore, a first opening area S1 and a second opening area S2 are formed in the first box cover 111, and a first heat sink 2 and a second heat sink 3 are provided in the first opening area S1 and the second opening area S2 respectively, so as to quickly transfer the heat inside the box body 11 to the outside of the box body 11 and accelerate the heat dissipation of the electronic control box 100. Exemplarily, the first box cover 111 can be made of plastic material, which is beneficial to reducing weight and cost.

[0067] In some embodiments of the present invention, as Figure 2 and Figure 5 shown, the electronic control box 100 includes a circuit board 4 disposed inside the box body 11. The circuit board 4 includes a substrate 41 and a first passive device 42 and a first power device 43 disposed on the substrate 41. The first passive device 42 is disposed corresponding to the first opening area S1, and the first power device 43 is disposed corresponding to the second opening area S2.

[0068] When the first passive device 42 and the first power device 43 are working, heat is generated. The first passive device 42 is disposed corresponding to the first opening area S1, and the first power device 43 is disposed corresponding to the second opening area S2, that is, the first passive device 42 is disposed corresponding to the first heat sink 2, and the first power device 43 is disposed corresponding to the second heat sink 3. Shortening the heat transfer path between the first passive device 42 and the first heat sink 2 and shortening the heat transfer path between the first power device 43 and the second heat sink 3 can improve the heat transfer efficiency between the first passive device 42 and the first heat sink 2 and improve the heat transfer efficiency between the first power device 43 and the second heat sink 3, so as to quickly transfer the heat inside the box body 11 to the outside of the box body 11 and accelerate the heat dissipation of the electronic control box 100.

[0069] The first heat sink 2 is disposed on the first box cover 111 and is in contact heat transfer with the first passive device 42 through a first heat transfer medium (non-gas). The second heat sink 3 is disposed on the circuit board 4 and is in contact heat transfer with the first power device 43 through a second heat transfer medium (non-gas).

[0070] Optionally, the first heat transfer medium can be a heat conductive pad or a heat conductive substrate 41 with better thermal conductivity, etc. The first passive device 42 and the first heat sink 2 are indirectly in contact for heat exchange through the heat conductive pad or the heat conductive substrate 41 to accelerate the heat exchange between the first passive device 42 and the first heat sink 2; or, alternatively, the first heat transfer medium can also be a coating structure such as heat conductive silicone grease. Or, the first heat transfer medium can also be a combined form including several of the above-mentioned heat transfer media, which can be selected according to actual needs.

[0071] Optionally, the second heat-conducting medium may be a heat-conducting pad or a heat-conducting substrate 41 with better heat conductivity. The first power device 43 and the second heat sink 3 are in indirect contact heat exchange through the heat-conducting pad or the heat-conducting substrate 41 to accelerate the heat exchange between the first power device 43 and the second heat sink 3. Or, alternatively, the second heat-conducting medium may also be a coating structure such as heat-conducting silicone grease. Or, the second heat-conducting medium may also be a combination form including several of the above-mentioned heat-conducting media, which can be selected according to actual needs.

[0072] The second heat sink 3 penetrates through the second opening area S2, and the first lid 111 is in a concave-convex structure form, protruding at the position where the first opening area S1 is provided and recessed at the position where the second opening area S2 is provided.

[0073] As Figure 2 and Figure 5 shown, the height of the first passive device 42 is greater than the height of the first power device 43. Therefore, the first lid 111 protrudes at the first opening area S1 facing the first passive device 42 and is recessed at the second opening area S2 facing the first power device 43, which is beneficial to the arrangement of the first passive device 42 and the first power device 43.

[0074] In some embodiments of the present invention, the first passive device 42 includes a capacitor, an inductor, etc.

[0075] In some embodiments of the present invention, the first power device 43 includes, but is not limited to, a rectifier bridge, an IGBT (Insulate-Gate Bipolar Transistor), an FRD (Fast Recovery Diode), an IPM (Intelligent Power Module), etc.

[0076] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the box body 11 has a wiring operation port 11b, the installation port 11a is located at the edge position of the wiring operation port 11b, the first wire threading structure 13 is a sealing rubber ring 13a and is embedded in the installation port 11a. The box body assembly 1 further includes an operation port cover plate 14, and the operation port cover plate 14 is installed on the box body 11 and covers the wiring operation port 11b and the first wire threading structure 13.

[0077] The operation port cover plate 14 is detachably arranged at the wiring operation port 11b to close the wiring operation port 11b to make the box body 11 a sealed box. The operation port cover plate 14 can protect the wiring area of the box body 11 and can cover the wiring operation port 11b and the first wire threading structure 13 to improve the sealing performance of the box body 11.

[0078] The first wire threading structure 13 is configured as a sealing rubber ring 13a. The sealing rubber ring 13a has good sealing performance and elasticity. The sealing rubber ring 13a squeezes the wire body at the first wire threading pore 131, so that the sealing rubber ring 13a is in close fit with the wire body at the first wire threading pore 131 to achieve sealing, improving the sealing performance of the electric control box 100.

[0079] In some embodiments of the present utility model, as Figure 3 and Figure 7 shown, both ends of the operation port cover plate 14 in the first direction X are respectively provided with buckles 141. The buckles 141 extend towards the box body 11 and are in snap-fit connection with the box body 11. The operation port cover plate 14 and the box body 11 are in snap-fit connection, which is convenient for the disassembly and assembly of the operation port cover plate 14 and the box body 11, can reduce the operation difficulty, and is convenient for subsequent maintenance and replacement.

[0080] As Figure 2 and Figure 5 shown, the first wire threading structure 13 is located at one side edge of the wiring operation port 11b in the third direction Z. The third direction Z is perpendicular to the second direction Y and the first direction X respectively, and the first wire threading structure 13 is located between the buckles 141 at both ends in the first direction X. The two buckles 141 sandwich the first wire threading structure 13, which can improve the cooperation reliability of the operation port cover plate 14 with the first wire threading structure 13 and improve the layout stability of the first wire threading structure 13.

[0081] In some embodiments of the present utility model, as Figure 2 and Figure 4 shown, the box body 11 further includes a second box cover 112. The second box cover 112 and the first box cover 111 are arranged along the thickness direction of the substrate 41 and cover each other.

[0082] Optionally, the first box cover 111 and the second box cover 112 are in snap-fit connection; or, alternatively, the first box cover 111 and the second box cover 112 are fixedly connected by fasteners; or, alternatively, after the first box cover 111 and the second box cover 112 are in snap-fit cooperation for positioning, they are then fixedly connected by fasteners, which can improve the assembly efficiency and connection stability of the first box cover 111 and the second box cover 112.

[0083] In some embodiments of the present utility model, as Figure 3As shown, the air duct cover 12 includes a first cover portion 121, a third cover portion 123 and a fourth cover portion 124. The third cover portion 123 is arranged on a side of the first cover portion 121 close to the outlet 12a2 of the heat dissipation duct, and the fourth cover portion 124 is arranged on a side of the third cover portion 123 close to the outlet 12a2 of the heat dissipation duct. The first cover portion 121 is opposite to the first threading structure 13, the third cover portion 123 is opposite to the buckle 141 at one end close to the outlet 12a2 of the heat dissipation duct, the fourth cover portion 124 is staggered with the operation port cover plate 14, and the width W4 of the fourth cover portion 124 in the second direction Y is greater than the width W3 of the third cover portion 123 in the second direction Y, and the width W3 of the third cover portion 123 in the second direction Y is greater than the width W1 of the first cover portion 121 in the second direction Y.

[0084] The air duct cover 12 is arranged to avoid the first threading structure 13, and the first threading structure 13 is located on one side of the air duct cover 12 in the second direction Y. The first cover portion 121 of the air duct cover 12 is opposite to the first threading structure 13 in the second direction Y, and the third cover portion 123 is opposite to the buckle 141 in the second direction Y. The size of the buckle 141 is smaller than the first threading structure 13. Therefore, the width W1 of the first cover portion 121 in the second direction Y is smaller than the width W3 of the third cover portion 123 in the second direction Y, and the width W3 of the third cover portion 123 in the second direction Y is smaller than the width W4 of the fourth cover portion 124 in the second direction Y.

[0085] Compared to the design of moving the first threading structure and the operation port cover along the second direction away from the air duct cover to avoid the air duct cover, the embodiment of the utility model shortens the size of the first cover part 121 and the third cover part 123 to keep the first threading structure 13 in place, thereby reducing the volume of the box body assembly 1 and facilitating the layout of the electric control box 100.

[0086] Compared with the design of reducing the size of the air duct cover as a whole along the second direction away from the first threading structure, the embodiment of the utility model shortens the size of the first cover 121 opposite to the first threading structure 13, shortens the size of the third cover 123 opposite to the buckle 141, and retains the size of the fourth cover 124 close to the outlet 12a2 of the heat dissipation air duct, so as to increase the flow area of ​​the heat dissipation air duct 12a, which is conducive to increasing the contact area between the heat dissipation airflow and the box body 11, and can improve the heat dissipation effect of the electric control box 100. In addition, when the airflow flows from the part directly opposite to the third cover 123 to the part directly opposite to the fourth cover 124 in the heat dissipation air duct 12a, the flow area increases and the airflow velocity slows down, which is conducive to sufficient heat exchange between the airflow and the box body 11.

[0087] In some embodiments of the present invention, Figure 5As shown, the first wire threading structure 13 is located at one side edge of the wiring operation port 11b in the third direction Z, where the third direction Z is perpendicular to the second direction Y and the first direction X respectively. The first wire threading structure 13 defines a first wire threading pore 131 that penetrates along the third direction Z and can be expanded by the wire body. The first wire threading pore 131 is in interference fit with the wire body to achieve sealing.

[0088] The box body assembly 1 further includes a second wire threading structure 15. The second wire threading structure 15 is located at one side edge of the wiring operation port 11b in the first direction X, close to the inlet 12a1 of the heat dissipation air duct, and defines a second wire threading pore 151 that penetrates along the first direction X and can be expanded by the wire body. The operation port cover plate 14 also covers the second wire threading structure 15.

[0089] By providing the first wire threading structure 13 and the second wire threading structure 15, the extending directions of the first wire threading pore 131 defined by the first wire threading structure 13 and the second wire threading pore 151 defined by the second wire threading structure 15 are different, which can accommodate wire bodies with different wiring directions, improve the smoothness of the wire body wiring, and improve the situation of wire body twisting and bending, which is beneficial to improving the working reliability of the electric control box 100.

[0090] In some embodiments of the present utility model, as Figure 2 shown, the first wire threading pore 131 penetrates the first wire threading structure 13 along the third direction Z and the direction towards the operation port cover plate 14. The first wire threading structure 13 has a first hollow hole 132 that opens towards the operation port cover plate 14. By providing the first hollow hole 132, on the one hand, it is convenient for the deformation of the first wire threading pore 131, facilitating the threading of the wire body and improving the assembly efficiency of the electric control box 100; on the other hand, it can reduce the material usage for manufacturing the first wire threading structure 13 and save the manufacturing cost of the first wire threading structure 13.

[0091] As Figure 7 shown, the operation port cover plate 14 has a first protrusion 142 that extends towards the box body 11. The first protrusion 142 extends into the expanded first wire threading pore 131 and the first hollow hole 132. The cooperation degree between the operation port cover plate 14 and the first wire threading structure 13 is high. The first protrusion 142 presses the first wire threading pore 131 and the first hollow hole 132, making the first wire threading structure 13 fit tightly with the wire body, and further improving the sealing performance at the first wire threading structure 13.

[0092] In some embodiments of the present utility model, as Figure 2 shown, the second wire threading pore 151 penetrates the second wire threading structure 15 along the first direction X and the direction towards the operation port cover plate 14. The second wire threading structure 15 has a second hollow hole 152 that opens towards the operation port cover plate 14.

[0093] By providing the second hollow hole 152, on the one hand, it facilitates the deformation of the second wire threading aperture 151, facilitating the threading of the wire body and improving the assembly efficiency of the electronic control box 100; on the other hand, it can reduce the material usage for manufacturing the second wire threading structure 15 and save the manufacturing cost of the second wire threading structure 15.

[0094] The operation port cover plate 14 has a second protrusion 143 extending in the direction towards the box body 11, and the second protrusion 143 extends into the expanded second wire threading aperture 151 and the second hollow hole 152. The cooperation degree between the operation port cover plate 14 and the second wire threading structure 15 is high. The second protrusion 143 presses the second wire threading aperture 151 and the second hollow hole 152, making the second wire threading structure 15 fit tightly with the wire body, and further improving the sealing performance at the second wire threading structure 15.

[0095] In a second aspect, an embodiment of the present invention provides an air conditioner, including the electronic control box 100 according to the embodiment of the first aspect of the present invention.

[0096] For the electronic control box 100 according to the embodiment of the present invention, by providing the above-mentioned electronic control box 100, the electronic control box 100 has good heat dissipation performance and good sealing performance, which can improve the working reliability of the air conditioner.

[0097] In some embodiments of the present invention, as Figure 8 and Figure 9 shown, the electronic control box 100 is disposed in the outdoor unit 1000 of the air conditioner. The outdoor unit 1000 includes a housing 200 and a middle partition 300 disposed inside the housing 200. The middle partition 300 divides the space inside the housing 200 into a compressor chamber 201 and a blower chamber 202 on both sides of the middle partition 300. The electronic control box 100 is disposed at the middle partition 300, and the inlet 12a1 of the heat dissipation air duct is communicated with the compressor chamber 201, and the outlet 12a2 of the heat dissipation air duct is communicated with the blower chamber 202.

[0098] When the blower in the blower chamber 202 operates, air convection is generated in the blower chamber 202, that is, a negative pressure is formed at the outlet 12a2 of the heat dissipation air duct. Under the action of the negative pressure, the inlet 12a1 of the heat dissipation air duct sucks in the air flow. The air flow flows into the heat dissipation air duct 12a to dissipate heat from the electronic control box 100, and flows along the heat dissipation air duct 12a and finally flows out from the outlet 12a2 of the heat dissipation air duct.

[0099] Using the rotation of the wind wheel to drive the air flow into the heat dissipation air duct 12a can save the cost of separately arranging a driving member in the heat dissipation air duct 12a, and can also reduce the structural complexity and the air flow resistance.

[0100] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, it should not be construed as a limitation to the present utility model.

[0101] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically and clearly defined.

[0102] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. 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 circumstances.

[0103] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0104] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some 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 expressions 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. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0105] 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, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An electric control box, characterized in that: include: A box body assembly includes a box body, an air duct cover and a first threading structure. The air duct cover is arranged outside the box body and forms a heat dissipation air duct between the air duct cover and the box body. The inlet and outlet of the heat dissipation air duct are respectively located on both sides of the air duct cover along a first direction. The first threading structure is located on one side of the air duct cover in a second direction, and the second direction is perpendicular to the first direction. The box body has a mounting opening, and the first threading structure is sealed at the mounting opening and defines a first threading gap.

2. The electric control box according to claim 1, characterized in that: The air duct cover includes a first cover portion and a second cover portion, the second cover portion is arranged on a side of the first cover portion close to the inlet of the heat dissipation duct, the first cover portion is opposite to the first threading structure, the second cover portion is staggered with the first threading structure, and the width of the second cover portion in the second direction is greater than the width of the first cover portion in the second direction.

3. The electric control box according to claim 1, characterized in that: The air duct cover includes a first cover portion and a third cover portion, the third cover portion is arranged on a side of the first cover portion close to the outlet of the heat dissipation duct, the first cover portion is opposite to the first threading structure, the third cover portion is staggered with the first threading structure, and the width of the third cover portion in the second direction is greater than the width of the first cover portion in the second direction.

4. The electric control box according to claim 3, characterized in that: The box body is formed with a first opening area and a second opening area, at least part of the first opening area is opened on a part of the box body that participates in defining the heat dissipation duct, and the second opening area is located downstream of the first opening area along the ventilation direction of the heat dissipation duct; the electric control box further includes: A first heat sink, the first heat sink is disposed at the first opening area and includes a first heat dissipation portion extending into the heat dissipation air duct; A second radiator is disposed at the second opening area and at least partially located outside the box body, and a portion of the second radiator located outside the box body is disposed at an outlet of the heat dissipation duct.

5. The electric control box according to claim 4, characterized in that: The box body includes a first box cover, which is made of non-metallic material and forms the first opening area and the second opening area. The electric control box includes a circuit board arranged in the box body, and the circuit board includes a substrate and a first passive device and a first power device arranged on the substrate. The first passive device is arranged corresponding to the first opening area, and the first power device is arranged corresponding to the second opening area. The first box cover is in a concave-convex structure, so that it is convex at the first opening area and concave at the second opening area.

6. The electric control box according to claim 5, characterized in that: The first heat sink is arranged on the first box cover and contacts the first passive device through a first heat conducting medium for heat transfer, the second heat sink is arranged on the circuit board and contacts the first power device through a second heat conducting medium for heat transfer, and the second heat sink passes through the second opening area; And / or, the first box cover is made of plastic material.

7. The electric control box according to claim 1, characterized in that: The box body is provided with a wiring operation port, the installation port is located at the edge of the wiring operation port, the first threading structure is a sealing rubber ring and is embedded in the installation port, and the box body assembly also includes an operation port cover plate, which is installed on the box body and covers the wiring operation port and the first threading structure.

8. The electric control box according to claim 7, characterized in that: The operation port cover has buckles at both ends in the first direction, the buckles extend toward the box body and are snap-fitted with the box body, the first threading structure is located at one side edge of the wiring operation port in the third direction, the third direction is perpendicular to the second direction and the first direction respectively, and the first threading structure is located between the buckles at both ends in the first direction.

9. The electric control box according to claim 8, characterized in that: The air duct cover includes a first cover portion, a third cover portion and a fourth cover portion, the third cover portion is arranged on a side of the first cover portion close to the outlet of the heat dissipation duct, the fourth cover portion is arranged on a side of the third cover portion close to the outlet of the heat dissipation duct, the first cover portion is opposite to the first threading structure, the third cover portion is opposite to the buckle at one end close to the outlet of the heat dissipation duct, the fourth cover portion is staggered with the operation port cover, the width of the fourth cover portion in the second direction is greater than the width of the third cover portion in the second direction, and the width of the third cover portion in the second direction is greater than the width of the first cover portion in the second direction.

10. The electric control box according to claim 7, characterized in that: The first threading structure is located at a side edge of the wiring operation port in a third direction, and the third direction is perpendicular to the second direction and the first direction respectively. The first threading structure defines the first threading hole that penetrates along the third direction and can be expanded by the wire body. The box body assembly also includes a second threading structure, which is located at a side edge of the wiring operation port in the first direction close to the inlet of the heat dissipation duct, and defines a second threading hole that penetrates along the first direction and can be expanded by the wire body. The operation port cover also covers the second threading structure.

11. The electric control box according to claim 10, characterized in that: The first threading hole penetrates the first threading structure along the third direction and in the direction toward the operation port cover plate, the first threading structure has a first hollow hole open in the direction toward the operation port cover plate, the operation port cover plate has a first protrusion extending in the direction toward the box body, and the first protrusion extends into the expanded first threading hole and the first hollow hole; And / or, the second threading hole penetrates the second threading structure along the first direction and in the direction toward the operation port cover plate, the second threading structure has a second hollow hole open in the direction toward the operation port cover plate, the operation port cover plate has a second protrusion extending in the direction toward the box body, and the second protrusion extends into the expanded second threading hole and the second hollow hole.

12. An air conditioner, characterized in that: include: An electric control box according to any one of claims 1 to 11.

13. The air conditioner according to claim 12, characterized in that: The electric control box is arranged in the outdoor unit of the air conditioner, and the outdoor unit includes a shell and a middle partition arranged in the shell, the middle partition divides the space in the shell into a compressor cavity and a fan cavity located on both sides of the middle partition, the electric control box is arranged at the middle partition, and the inlet of the heat dissipation air duct is connected to the compressor cavity, and the outlet of the heat dissipation air duct is connected to the fan cavity.

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