Electric control box and air conditioner with same

Abstract

The utility model discloses an electric control box and an air conditioner with the same, the electric control box comprises a box body, a circuit board and a radiator, the circuit board is arranged in the box body, and the circuit board comprises a substrate and a heating device arranged on the substrate. The radiator is arranged in the box body and located between the heating device and the box body, a penetrating channel used for penetrating of the radiating pipe is formed in the radiator or between the radiator and the box body, and the radiator comprises a first solid part arranged between the penetrating channel and the heating device in a spaced mode. A receding hole is formed in the box body so that the heat dissipation pipe penetrating through the penetrating channel can penetrate through the box body. According to the electric control box provided by the embodiment of the utility model, the radiator is arranged in the box body and participates in limiting the penetrating channel which can be matched with the radiating pipe, so that the radiating pipe can extend into the box body, and the radiating efficiency of the electric control box is improved by radiating the heat of the electric control box through the radiator.

Description

Technical Field

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

[0002] In an air conditioning system, good heat dissipation design for the electric control is very important for the air conditioner, which is related to the reliability, continuous and full-load operation of the air conditioner. In the related art, there is a problem of difficult heat dissipation for the circuit board inside the electric control box, and there is room for improvement. 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 purpose, the utility model provides an electric control box with good heat dissipation performance.

[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; a circuit board disposed in the box body and including a substrate and heat generating devices disposed on the substrate; a radiator disposed in the box body and located between the heat generating devices and the box body, a through-channel for passing a heat dissipation pipe is formed on the radiator or between the radiator and the box body, the radiator is isolated between the through-channel and the heat generating devices, and an avoidance hole is formed on the box body for the heat dissipation pipe passing through the through-channel to pass through the box body.

[0006] According to the electric control box of the utility model, by providing a radiator in the box body and participating in defining a through-channel that can cooperate with the heat dissipation pipe, the heat dissipation pipe can extend into the box body, and the radiator dissipates heat from the electric control box, thereby improving the heat dissipation efficiency of the electric control box. Moreover, since the radiator is isolated between the through-channel and the heat generating devices, the heat dissipation pipe and the circuit board will not be in direct contact, which can prevent the problem of condensate formation caused by the direct contact between the high-temperature heat generating devices and the low-temperature heat dissipation pipe, and improve the working reliability of the circuit board; and it can avoid the risk of explosion caused by the direct contact between the leakage of the heat dissipation pipe and the circuit board, and improve the working reliability of the circuit board.

[0007] In some embodiments, the radiator includes a first radiator, the box body includes a first box cover covering one side of the first radiator away from the circuit board, the first radiator includes an assembled substrate and a heat dissipation part, the substrate is disposed between the heat dissipation part and the first box cover, and the through-channel includes a first through-channel formed between the substrate and the heat dissipation part.

[0008] In some embodiments, the radiator includes a second radiator, the box body includes a first box cover covering one side of the second radiator away from the circuit board, a heat dissipation tube fitting groove that opens in the direction of the first box cover is formed on one side of the second radiator facing the first box cover, the threading channel includes a second threading channel formed between the second radiator and the first box cover, and the second threading channel includes the heat dissipation tube fitting groove.

[0009] In some embodiments, heat is transferred between the heat generating device and the radiator through a heat conducting medium, and / or heat is transferred between the surface of the heat generating device facing away from the circuit board and the box body.

[0010] In some embodiments, the box body includes a first box cover covering one side of the radiator away from the circuit board, the radiator is assembled to the first box cover through fasteners, or the radiator is integrally connected to the first box cover.

[0011] In some embodiments, the box body includes a first box cover covering one side of the radiator away from the circuit board, the first box cover is made of metal; or the first box cover includes an inner cover and an outer cover, a window is opened in the inner cover corresponding to the radiator, and the outer cover is made of metal and covers the window.

[0012] In some embodiments, the electric control box includes a heat dissipation tube, the heat dissipation tube includes a first part passing through the threading channel and a second part isolated from the box body, and the box body separates the second part from the space inside the box body.

[0013] In some embodiments, a heat dissipation tube passes through the threading channel, the electric control box includes an isolation structure that completely separates the heat dissipation tube from the space inside the box body, and the isolation structure includes the radiator.

[0014] In some embodiments, the box body includes a first box cover, the first box cover includes a first step portion and a second step portion, the distance from the first step portion to the substrate is less than the distance from the second step portion to the substrate, the heat generating device includes a first heat generating device and a second heat generating device, both the first heat generating device and the second heat generating device are disposed on one side of the substrate facing the first box cover, and the height of the first heat generating device is less than the height of the second heat generating device, the first heat generating device is disposed corresponding to the first step portion, and a radiator is provided between the first heat generating device and the first step portion, the second heat generating device is disposed corresponding to the second step portion, and a radiator is provided between the second heat generating device and the second step portion.

[0015] In some embodiments, the radiator provided between the first heating device and the first stepped portion is spaced from the radiator provided between the second heating device and the second stepped portion.

[0016] In some embodiments, the box body further includes a second box cover, the second box cover and the first box cover are arranged along the thickness direction of the substrate and cover each other, and the first box cover and the second box cover are snap-connected and / or connected by fasteners.

[0017] In some embodiments, the box body includes a box body and an operation port cover plate. The box body has a wiring operation port, and the operation port cover plate can cover the wiring operation port to close the wiring operation port so that the box body is an airtight box. The box body has a card slot area at the wiring operation port, and the card slot area is provided with a sealing rubber ring for threading.

[0018] In some embodiments, the sealing rubber ring has an expandable opening penetrating in the direction of the operation port cover plate, and the expandable opening penetrates the sealing rubber ring along the direction parallel to the operation port cover plate. The wire body passes through the sealing rubber ring by expanding the expandable opening. The operation port cover plate has a convex portion extending into the box body, and the convex portion extends into the expandable opening.

[0019] In some embodiments, the box body includes a first box cover and a second box cover. The second box cover and the first box cover are arranged along the thickness direction of the substrate and cover each other. The radiator is provided between the first box cover and the heating device. The card slot area and the wiring operation port are both formed on the second box cover, and the operation port cover plate is snap-connected and / or connected by fasteners to the second box cover.

[0020] The air conditioner according to the second aspect of the present invention includes a refrigerant circulation system and an electric control box according to the first aspect of the present invention. The refrigerant circulation system provides cooling capacity to the heat dissipation pipe passing through the through-hole.

[0021] The air conditioner according to the present invention uses a refrigerant circulation system to provide cooling capacity to a heat dissipation pipe for heat exchange with a heating device, without the need to additionally provide a heat dissipation member to cooperate with the electric control box, which can accelerate the heat dissipation of the electric control box, reduce the manufacturing cost, and improve the working reliability of the air conditioner.

[0022] In some embodiments, the refrigerant pipe in the refrigerant circulation system serves as the heat dissipation pipe and passes through the avoidance hole and the through-hole, or the refrigerant pipe in the refrigerant circulation system is connected to the heat dissipation pipe passing through the avoidance hole and the through-hole.

[0023] In some embodiments, the electronic control box is disposed in the outdoor unit of the air conditioner, and the refrigerant pipe in the outdoor unit serves as the heat dissipation pipe and passes through the avoidance hole and the penetration channel; and / or, the refrigerant circulating in the refrigerant circulation system is a flammable refrigerant.

[0024] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an electronic control box according to an embodiment of the present utility model;

[0026] Figure 2 is according to Figure 1 a partial enlarged view of area A of the illustrated example;

[0027] Figure 3 is according to Figure 1 a partial enlarged view of area B of the illustrated example;

[0028] Figure 4 is an exploded schematic structural diagram of an electronic control box according to an embodiment of the present utility model;

[0029] Figure 5 is a schematic cooperation diagram of a radiator, a heat dissipation pipe, a circuit board and a second box cover according to an embodiment of the present utility model;

[0030] Figure 6 is another angle schematic cooperation diagram of a radiator, a heat dissipation pipe, a circuit board and a second box cover according to an embodiment of the present utility model;

[0031] Figure 7 is yet another angle schematic cooperation diagram of a radiator, a heat dissipation pipe, a circuit board and a second box cover according to an embodiment of the present utility model;

[0032] Figure 8 is according to Figure 4 a partial enlarged view of area C of the illustrated example;

[0033] Figure 9 is a schematic structural diagram of a second box cover and a sealing rubber ring according to an embodiment of the present utility model;

[0034] Figure 10 is another angle schematic structural diagram of a second box cover and a sealing rubber ring according to an embodiment of the present utility model;

[0035] Figure 11 is a schematic structural diagram of an operation port cover plate according to an embodiment of the present utility model;

[0036] Figure 12 It is a schematic diagram of a refrigerant circulation system of an air conditioner according to an embodiment of the present utility model.

[0037] Reference numerals:

[0038] Electric control box 100;

[0039] Box body 1; Avoidance hole 1a; Box main body 11; First box cover 111; First step portion 1111; Distance H1 from the first step portion to the substrate; Second step portion 1112; Distance H2 from the second step portion to the substrate; Heat dissipation pipe limiting groove 1113; Wiring operation port 1114; Card slot area 1115; Second box cover 112; Operation port cover plate 12; Protrusion portion 121;

[0040] Circuit board 2; Substrate 21; Heating device 22; First heating device 221; Second heating device 222;

[0041] Radiator 3; Penetration channel 3a; First penetration channel 3a1; Second penetration channel 3a2; First radiator 31; Base portion 312; Heat dissipation portion 311; Second radiator 32; Heat dissipation pipe fitting groove 321;

[0042] Heat dissipation pipe 4;

[0043] Sealing rubber ring 6; Expandable opening 61; Hollow hole 62;

[0044] Refrigerant circulation system 200; Compressor 201; Outdoor heat exchanger 202; Indoor heat exchanger 203; Throttling device 204; Reversing component 205. Detailed implementation manners

[0045] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the 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.

[0046] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0047] The electronic control box 100 according to the first aspect embodiment of the present invention will be described below with reference to the accompanying drawings.

[0048] The electronic control box 100 according to the embodiment of the present invention, as Figure 1 shown, the electronic control box 100 includes: a box body 1, a circuit board 2, and a heat sink 3. The circuit board 2 is disposed inside the box body 1 and includes a substrate 21 and heat generating devices 22 disposed on the substrate 21. The heat sink 3 is disposed inside the box body 1 and is located between the heat generating devices 22 and the box body 1. A through-channel 3a for passing through a heat dissipation tube 4 is formed on the heat sink 3 or between the heat sink 3 and the box body 1. The heat sink 3 is isolated between the through-channel 3a and the heat generating devices 22. An avoidance hole 1a is formed on the box body 1 for the heat dissipation tube 4 passing through the through-channel 3a to pass through the box body 1.

[0049] The circuit board 2 is disposed inside the box body 1. When the circuit board 2 is working, heat is generated. Since the box body 1 is a closed box body 1, the circuit board 2 cannot directly dissipate the heat to the external environment, and the heat dissipation of the circuit board 2 is poor.

[0050] In the present invention, a heat sink 3 is disposed between the heat generating devices 22 and the box body 1. A through-channel 3a is formed on the heat sink 3, or a through-channel 3a is formed between the heat sink 3 and the box body 1. A refrigerant with a lower temperature flows in the heat dissipation tube 4. The heat dissipation tube 4 passes through the through-channel 3a to cool the heat sink 3, and the refrigerant flowing in the heat dissipation tube 4 quickly takes out the heat, thereby accelerating the heat exchange speed between the heat sink 3 and the heat generating devices 22, and improving the heat dissipation speed of the circuit board 2.

[0051] When the heat dissipation tube 4 passes through the through-channel 3a to cool the heat sink 3, it will also cool the box body 1 at the same time. The heat of the circuit board 2 can be indirectly transferred to the box body 1 through heat exchange with the air, and the circuit board 2 can also directly transfer the heat to the box body 1 by means of heat radiation. Therefore, the heat exchange between the box body 1 and the heat generating devices 22 is accelerated, which is also beneficial to accelerating the heat dissipation of the circuit board 2.

[0052] The way that the heat dissipation tube 4 is directly disposed inside the box body 1 to dissipate heat from the heat generating devices 22 can improve the heat transfer efficiency and accelerate the heat dissipation speed of the circuit board 2 compared with arranging the heat dissipation tube 4 outside the box body 1.

[0053] By setting the heat sink 3 to cool the heat generating devices 22, the heat exchange area can be increased and the heat dissipation speed can be accelerated. Compared with directly exchanging heat between the heat generating devices 22 through the heat dissipation tube 4, the heat sink 3 cools the heat generating devices 22 evenly, which is beneficial to improving the working reliability of the heat generating devices 22.

[0054] Moreover, since the radiator 3 is spaced between the heat pipe 4 and the circuit board 2, the heat pipe 4 and the circuit board 2 will not be in direct contact. In this way, the heating device 22 does not release heat directly to the heat pipe 4, but transfers heat to the heat pipe 4 through the radiator 3, thereby improving the temperature uniformity of the radiator 3, so that the heat pipe 4 can absorb the heat of the circuit board 2 more fully and comprehensively through the radiator 3, thereby improving the heat dissipation efficiency; furthermore, it can prevent the high-temperature heating device 22 from directly contacting the low-temperature heat pipe 4 to form condensed water, thereby improving the working reliability of the circuit board 2; furthermore, it can avoid the risk of explosion caused by leakage of the heat pipe 4 and direct contact with the circuit board 2, thereby improving the working reliability of the circuit board 2.

[0055] Similarly, the heat dissipation pipe 4 enters and exits the box body 1 through the avoidance hole 1a on the box body 1, and the portion of the heat dissipation pipe 4 located in the box body 1 and penetrating the penetration channel 3a is blocked by the radiator 3. The portion of the heat dissipation pipe 4 extends out of the box body 1 through the avoidance hole 1a instead of remaining in the box body 1, which can reduce the contact between the heat dissipation pipe 4 and the heating device 22 inside the box body 1, reduce the situation where the flammable refrigerant enters the box body 1 due to the damage of the heat dissipation pipe 4, and improve the safety of the electronic control box 100.

[0056] According to the electric control box 100 of the embodiment of the utility model, by arranging the radiator 3 in the box body 1 to directly dissipate the heat from the heating device 22, the heat pipe 4 cooperates with the radiator 3 to quickly take away the heat, thereby improving the heat dissipation performance of the circuit board 2. The design of the radiator 3 and the box body 1 can also reduce the direct contact between the heat pipe 4 and the heating device 22, reduce the occurrence of the combustible refrigerant contacting the heating device 22, and improve the safety of the electric control box 100.

[0057] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the radiator 3 includes a first radiator 31, the box body 1 includes a first box cover 111 covering the side of the first radiator 31 away from the circuit board 2, the first radiator 31 includes a base 312 and a heat dissipation portion 311 that are assembled together (that is, the base 312 and the heat dissipation portion 311 are not two parts of an integrated piece, but two parts combined through an assembly process), the substrate 21 is arranged between the heat dissipation portion 311 and the first box cover 111, and the penetration channel 3a includes a first penetration channel 3a1 formed between the substrate 21 and the heat dissipation portion 311.

[0058] In the embodiment of the utility model, the radiator 3 is formed with a penetration channel 3a for penetrating the heat pipe 4. The heat pipe 4 is limited only by the first radiator 31, and the heat pipe 4 can be assembled with the first radiator 31 and then connected to the box body 1 as a whole, which can reduce the difficulty of assembly.

[0059] In some embodiments of the present invention, Figure 3As shown, the heat sink 3 includes a second heat sink 32. The box body 1 includes a first box cover 111 covering one side of the second heat sink 32 away from the circuit board 2. On one side of the second heat sink 32 facing the first box cover 111, a heat pipe fitting groove 321 is formed and opens in the direction of the first box cover 111. The threading channel 3a includes a second threading channel 3a2 formed between the second heat sink 32 and the first box cover 111, and the second threading channel 3a2 includes the heat pipe fitting groove 321.

[0060] In the embodiment of the present utility model, a threading channel 3a for threading a heat pipe 4 is formed between the heat sink 3 and the box body 1. The heat pipe 4 is limited by the first box cover 111 and the second heat sink 32. The structure of the heat sink 3 is simple, which can reduce the manufacturing difficulty of the heat sink 3 and save the manufacturing cost.

[0061] In some embodiments of the present utility model, as Figure 3 shown, on one side of the second heat sink 32 facing the first box cover 111, a heat pipe fitting groove 321 is formed and opens in the direction of the first box cover 111. On one side of the first box cover 111 facing the circuit board 2, a heat pipe limiting groove 1113 is formed and opens in the direction of the second heat sink 32. The heat pipe fitting groove 321 and the heat pipe limiting groove 1113 jointly define the second threading channel 3a2 for the heat pipe 4 to pass through.

[0062] It should be noted that there are multiple heat generating devices 22 on the circuit board 2. Therefore, optionally, there can be multiple heat sinks 3 to dissipate heat from different heat generating devices 22 and improve the overall heat dissipation effect of the circuit board 2.

[0063] Optionally, as Figure 4 shown, multiple heat sinks 3 can all be the first heat sink 31, and the first heat sink 31 is formed with a threading channel 3a for threading the heat pipe 4.

[0064] Or, alternatively, multiple heat sinks 3 are all the second heat sink 32, and a threading channel 3a for threading the heat pipe 4 is formed between the second heat sink 32 and the first box cover 111.

[0065] Or, again alternatively, multiple heat sinks 3 include the first heat sink 31 and also include the second heat sink 32, which can be selected according to actual needs.

[0066] In some embodiments of the present utility model, the heat generating device 22 and the heat sink 3 transfer heat by contacting with a non-gaseous heat conducting medium.

[0067] Optionally, the heat-conducting medium can be a heat-conducting pad or a heat-conducting substrate with better heat conductivity, etc. The heat-generating device 22 and the radiator 3 are in indirect contact heat exchange through the heat-conducting pad or the heat-conducting substrate, accelerating the heat exchange between the heat-generating device 22 and the radiator 3; or, alternatively, the heat-conducting medium can also be a coating-like structure such as heat-conducting silicone grease. Or, the heat-conducting medium can also be a combined form including several of the above-mentioned heat-conducting media, which can be selected according to actual needs.

[0068] In some embodiments of the present invention, the heat-conducting medium is an insulating heat-conducting medium. When a high voltage is applied to the circuit board 2 and the radiator 3 is a conductor, there is a risk of conduction between the circuit board 2 and the radiator 3. Therefore, an insulating heat-conducting medium is provided between the heat-generating device 22 and the radiator 3, which can avoid conduction between the circuit board 2 and the radiator 3 and improve the use safety of the electronic control box 100.

[0069] In some embodiments of the present invention, as Figure 1 shown, the surface of the heat-generating device 22 facing away from the circuit board 2 is in contact with the box body 1 for heat transfer.

[0070] The heat transfer effect of the substrate 21 is poor. Therefore, the heat-generating device 22 transfers heat by contacting the box body 1 through the surface facing away from the circuit board 2, which can improve the heat dissipation efficiency.

[0071] In some embodiments of the present invention, as Figure 1 shown, the box body 1 includes a first box cover 111 covering the side of the radiator 3 away from the circuit board 2, and the radiator 3 is assembled to the first box cover 111 through fasteners.

[0072] The radiator 3 is assembled to the first box cover 111 through fasteners, which is convenient for the installation of the heat dissipation pipe 4. When a threading channel 3a for threading the heat dissipation pipe 4 is formed on the radiator 3, the radiator 3 and the heat dissipation pipe 4 can be assembled together and then connected to the first box cover 111 through fasteners. When a threading channel 3a is formed between the radiator 3 and the first box cover 111, the heat dissipation pipe 4 can be assembled into the threading channel 3a, and then the radiator 3 and the first box cover 111 can be connected through fasteners, and the operation is simple. When the fasteners are detachably arranged, it is also convenient for subsequent maintenance and replacement.

[0073] Moreover, the connection stability between the radiator 3 and the first box cover 111 is relatively strong, which can improve the layout stability of the heat dissipation pipe 4 and is beneficial to improving the cooperation reliability between the heat dissipation pipe 4 and the radiator 3.

[0074] In some other embodiments of the present invention, the box body 1 includes a first box cover 111 covering the side of the radiator 3 away from the circuit board 2, and the radiator 3 is integrally connected to the first box cover 111.

[0075] The radiator 3 is integrally connected to the first lid 111 of the box. The integrity of the radiator 3 and the first lid 111 is strong, and the assembly steps of the radiator 3 and the first lid 111 are streamlined, which can improve the assembly efficiency.

[0076] Exemplarily, when a threading channel 3a for threading the heat dissipation tube 4 is formed on the radiator 3, the heat dissipation tube 4 can be integrally formed on the radiator 3 and then integrally connected to the first lid 111 by the radiator 3.

[0077] Exemplarily, when a threading channel 3a is formed between the radiator 3 and the first lid 111, the heat dissipation tube 4 and the radiator 3 can be integrally formed on the first lid 111, and the integrity of the heat dissipation tube 4, the radiator 3 and the first lid 111 is good.

[0078] In some embodiments of the present utility model, the box body 1 includes a first lid 111 covering one side of the radiator 3 away from the circuit board 2, and the first lid 111 is made of metal.

[0079] The first lid 111 is made of metal, and the first lid 111 has good heat conduction performance, which is beneficial to improving the heat dissipation effect of the electric control box 100; and the structural strength of the first lid 111 is relatively high, which can improve the impact resistance of the electric control box 100.

[0080] In some other embodiments of the present utility model, the box body 1 includes a first lid 111 covering one side of the radiator 3 away from the circuit board 2. The first lid 111 includes an inner lid and an outer lid. The inner lid is provided with a window corresponding to the radiator 3, and the outer lid is made of metal and covers the window.

[0081] The outer lid is made of metal and covers the window opened by the inner lid. The heat in the box body 1 can be quickly exchanged with the outer lid through the window, thereby improving the heat dissipation efficiency of the electric control box 100.

[0082] Optionally, the inner lid is made of non-metal material, which can improve the electrical safety of the electric control box 100. Exemplarily, the inner lid is a plastic part. Setting the inner lid as a non-metal part and the outer lid as a metal part can save the manufacturing cost while improving the heat dissipation efficiency of the electric control box 100.

[0083] In some embodiments of the present utility model, the electric control box 100 includes a heat dissipation tube 4. The heat dissipation tube 4 includes a first part passing through the threading channel 3a and a second part isolated from the box body 1. The box body 1 separates the second part from the space inside the box body 1.

[0084] The first part of the heat dissipation pipe 4 is located inside the box body 1. The first part passes through the through-channel 3a and is blocked by the radiator 3. The second part of the heat dissipation pipe 4 is isolated from the box body 1 and is blocked by the box body 1, thereby completely separating the heat dissipation pipe 4 from the space inside the box body 1, that is, separating the heat dissipation pipe 4 from the heat generating device 22, which can reduce the situation of the combustible refrigerant contacting the heat generating device 22 and improve the use safety of the electric control box 100.

[0085] In some embodiments, the second part of the heat dissipation pipe 4 is injection-molded into the box body 1, and the box body 1 separates the second part from the space inside the box body 1. The integrated design of the heat dissipation pipe 4 and the box body 1 can improve the integrity of the heat dissipation pipe 4 and the box body 1. Only the radiator 3 needs to be assembled with the whole of the box body 1 and the heat dissipation pipe 4, which can simplify the assembly process and improve the assembly efficiency.

[0086] Moreover, other parts of the heat dissipation pipe 4 extend out of the box body 1 through the avoidance holes 1a on the box body 1, completely separating the heat dissipation pipe 4 from the heat generating device 22, thereby reducing the situation of the combustible refrigerant in the heat dissipation pipe 4 contacting the heat generating device 22.

[0087] In some embodiments of the present utility model, the through-channel 3a is provided with the heat dissipation pipe 4, and the electric control box 100 includes an isolation structure that completely separates the heat dissipation pipe 4 from the space inside the box body 1. The isolation structure includes the above-mentioned radiator 3.

[0088] By providing the isolation structure to completely separate the heat dissipation pipe 4 from the space inside the box body 1, that is, separating the heat dissipation pipe 4 from the heat generating device 22, the situation of the combustible refrigerant contacting the heat generating device 22 can be reduced, and the use safety of the electric control box 100 can be improved.

[0089] Optionally, the heat dissipation pipe 4 is completely separated from the space inside the box body 1 by the radiator 3; or, alternatively, the heat dissipation pipe 4 is completely separated from the space inside the box body 1 by the radiator 3 and the box body 1; or, alternatively, the heat dissipation pipe 4 is completely separated from the space inside the box body 1 by the radiator 3 and other components inside the box body 1.

[0090] In some embodiments of the present utility model, such as Figure 1As shown in the figure, the box body 1 includes a first lid 111. The first lid 111 includes a first step portion 1111 and a second step portion 1112. The distance H1 from the first step portion 1111 to the substrate 21 is less than the distance H2 from the second step portion 1112 to the substrate 21. The heating device 22 includes a first heating device 221 and a second heating device 222. Both the first heating device 221 and the second heating device 222 are disposed on the side of the substrate 21 facing the first lid 111, and the height of the first heating device 221 is less than the height of the second heating device 222. The first heating device 221 is disposed corresponding to the first step portion 1111, and a heat sink 3 is provided between the first heating device 221 and the first step portion 1111. The second heating device 222 is disposed corresponding to the second step portion 1112, and a heat sink 3 is provided between the second heating device 222 and the second step portion 1112.

[0091] The available layout space of the substrate 21 opposite to the first step portion 1111 is smaller than the available layout space of the substrate 21 opposite to the second step portion 1112, and the height of the first heating device 221 is less than the height of the second heating device 222. Therefore, the first heating device 221 is disposed at the position corresponding to the first step portion 1111 of the substrate 21, and the second heating device 222 is disposed at the position corresponding to the second step portion 1112 of the substrate 21.

[0092] Optionally, the first heating device 221 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. The second heating device 222 includes, but is not limited to, a capacitor, an inductor, etc.

[0093] In some embodiments of the present invention, as Figure 1 shown, the heat sink 3 provided between the first heating device 221 and the first step portion 1111 is spaced apart from the heat sink 3 provided between the second heating device 222 and the second step portion 1112.

[0094] By providing two heat sinks 3 respectively corresponding to the first heating device 221 and the second heating device 222, and the two heat sinks 3 are spaced apart, compared with providing a whole heat sink 3 to dissipate heat from the first heater and the second heating device 222, on the one hand, the manufacturing cost can be reduced; on the other hand, the heat sink 3 is specifically corresponding to the first heater and the second heater for heat dissipation, and the heat dissipation effect can be improved.

[0095] Optionally, the heat dissipation pipe 4 in the penetration channel 3a formed by the radiator 3 between the first heating device 221 and the first step portion 1111 and the heat dissipation pipe 4 in the penetration channel 3a formed by the radiator 3 between the second heating device 222 and the second step portion 1112 are the same, and the first heating device 221 and the second heating device 222 are cooled by the same heat dissipation pipe 4.

[0096] Alternatively, also optionally, there are two heat pipes 4, and the two heat pipes 4 are respectively arranged in the through channel 3a formed by the radiator 3 between the first heating device 221 and the first step portion 1111, and in the through channel 3a formed by the radiator 3 between the second heating device 222 and the second step portion 1112, and the two heat pipes 4 are specifically used to dissipate heat for the first heater and the second heater.

[0097] In some embodiments of the present invention, Figure 2 As shown, the heat sink 3 includes a first heat sink 31, the first heat sink 31 includes a base 312 and a heat sink 311, a through channel 3a is formed between the base 312 and the heat sink 311, and the first heat sink 31 is provided between the first heating element 221 and the first step 1111. Figure 1 As shown, the heat sink 3 further includes a second heat sink 32 , and the second heat sink 32 is disposed between the second heating element 222 and the second step portion 1112 , and a penetration channel 3 a is formed between the second heat sink 32 and the second step portion 1112 .

[0098] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, the box body 1 further includes a second box cover 112, which is arranged along the thickness direction of the substrate 21 and covers the first box cover 111, and the first box cover 111 and the second box cover 112 are snap-fitted and / or connected via fasteners.

[0099] The first box cover 111 is located on a side of the substrate 21 of the circuit board 2 where the first heating device 221 and the second heating device 222 are arranged, and the second box cover 112 is located on a side away from the substrate 21 where the first heating device 221 and the second heating device 222 are arranged.

[0100] Optionally, the first box cover 111 and the second box cover 112 are snap-connected; or, further optionally, the first box cover 111 and the second box cover 112 are fixedly connected by fasteners; or, further optionally, the first box cover 111 and the second box cover 112 are snap-fitted and positioned, and 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.

[0101] Figure 5 , Figure 6 andFigure 7 It is a schematic diagram of the mating structure of the radiator, the heat dissipation pipe, the circuit board, and the second box cover.

[0102] In some embodiments of the present utility model, as Figure 4 shown, the box body 1 includes a box main body 11 and an operation port cover plate 12.

[0103] As Figure 8 shown, the box main body 11 has a wiring operation port 1114, and the operation port cover plate 12 is detachably arranged at the wiring operation port 1114 to close the wiring operation port 1114 so that the box body 1 is a sealed box. The box main body 11 has a card slot area 1115 at the wiring operation port 1114, and a sealing rubber ring 6 for threading is arranged in the card slot area 1115.

[0104] The wire body extending into the box body 1 or the wire body extending out of the box body 1 passes through the box body 1 from the wiring operation port 1114, and the operation port cover plate 12 covers the wiring operation port 1114, thereby protecting the wire routing part of the box body 1 and closing the wiring operation port 1114 to make the box body 1 a sealed box, improving the sealing performance of the box body 1.

[0105] There is a card slot area 1115 at the wiring operation port 1114, and the card slot area 1115 is used to install the sealing rubber ring 6, so that the sealing rubber ring 6 and the box body 1 are stably connected. By arranging the sealing rubber ring 6 at the wiring operation port 1114, on the one hand, the sealing rubber ring 6 can limit the wire body and improve the regularity of wire routing; on the other hand, the sealing rubber ring 6 can seal the wiring operation port 1114 and improve the sealing performance of the electric control box 100. In addition, the sealing rubber ring 6 is an insulating part and can also improve the electrical safety of the electric control box 100.

[0106] By designing the box body 1 as a sealed box, that is, the box body 1 does not have a ventilation area for connecting the inside and the outside of the box body 1, it can effectively prevent combustible refrigerant or water from entering the box body 1, thereby ensuring the electrical safety of the electric control box 100.

[0107] It is worth noting that with the improvement of environmental protection requirements for the refrigerant in the air conditioner, due to its cleanliness, refrigerant R290 will not damage the ozone layer and has a very small impact on the greenhouse effect, and is gradually replacing traditional refrigerants such as R32 and being applied to air conditioners. However, R290 refrigerant is flammable. When R290 refrigerant leaks at a low concentration, it may catch fire and explode when encountering a low-energy spark. Therefore, the use safety performance of R290 refrigerant needs to be further guaranteed.

[0108] The electric control box 100 of the embodiment of the present utility model is a sealed box, and the heat dissipation pipe 4 is completely separated from the space inside the box body 1 by the radiator 3 and / or the box body 1, which can effectively prevent the combustible refrigerant from entering the box body 1 and contacting the heating device 22, thereby ensuring the use safety of the electric control box 100. The electric control box 100 of the embodiment of the present utility model can be applied to an air conditioner using R290 refrigerant.

[0109] In some embodiments of the present utility model, as Figure 9 and Figure 10 shown, the sealing rubber ring 6 has an expandable opening 61 and a hollow hole 62 that penetrate in the direction towards the operation port cover plate 12, and the expandable opening 61 penetrates the sealing rubber ring 6 along the direction parallel to the operation port cover plate 12. The wire body passes through the sealing rubber ring 6 by expanding the expandable opening 61. The operation port cover plate 12 has a protruding portion 121 extending towards the inside of the box body 11, and the protruding portion 121 extends into the expandable opening 61 and the hollow hole 62.

[0110] The expandable opening 61 can produce elastic deformation. The wire body passes through the sealing rubber ring 6 by expanding the expandable opening 61, and the sealing rubber ring 6 is in close contact with the wire body at the expandable opening 61, thereby isolating the inside of the box body 1 from the outside world and sealing the wiring operation port 1114, improving the sealing performance of the electric control box 100.

[0111] As Figure 9 shown, there are multiple expandable openings 61 which are arranged at intervals, and a hollow hole 62 is formed between two adjacent expandable openings 61. Forming a hollow hole 62 between the expandable openings 61 is convenient for the deformation of the expandable openings 61 on the one hand, facilitating the threading of the wire body and improving the assembly efficiency of the electric control box 100; on the other hand, it also saves manufacturing costs.

[0112] As Figure 11 shown, a protruding portion 121 is provided on one side surface of the operation port cover plate 12 facing the box body 11, and the protruding portion 121 extends into the expandable opening 61 and the hollow hole 62. The cooperation degree of the operation port cover plate 12 and the sealing rubber ring 6 is high. The protruding portion 121 squeezes the expandable opening 61, making the sealing rubber ring 6 in close contact with the wire body, further improving the sealing performance at the wiring operation port 1114.

[0113] In some embodiments of the present utility model, as Figure 4 shown, the box body 11 includes a first box cover 111 and 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 21 and cover each other. The radiator 3 is arranged between the first box cover 111 and the heating device 22. As Figure 8 shown, the card slot area 1115 and the wiring operation port 1114 are both formed on the first box cover 111, and the operation port cover plate 12 is clamped and / or connected to the first box cover 111 through fasteners.

[0114] The card slot area 1115 and the wiring operation port 1114 are both formed in the first box cover 111, and the heat sink 3 is also arranged between the first box cover 111 and the heating device 22, so that the subsequent maintenance of the electric control box 100 is more convenient. In addition, the structural complexity of the second box cover 112 can be reduced, and the manufacturing difficulty can be reduced.

[0115] Optionally, the operation port cover plate 12 is snap-connected with the first box cover 111; or, further optionally, the operation port cover plate 12 is fixedly connected with the first box cover 111 by fasteners; or, again optionally, the operation port cover plate 12 is snap-fitted and positioned with the first box cover 111, and then fixedly connected with fasteners, which can improve the assembly efficiency and connection stability of the operation port cover plate 12 and the first box cover 111.

[0116] In the second aspect, an embodiment of the utility model provides an air conditioner, including a refrigerant circulation system and an electric control box 100 according to the embodiment of the first aspect of the utility model, wherein the refrigerant circulation system 200 provides cooling to the heat dissipation pipe 4 that is matched with the penetrating channel 3a.

[0117] The refrigerant circulation system 200 is used to provide cooling to the heat pipe 4 for heat exchange with the heating element 22. No additional heat sink is required to cooperate with the electric control box 100. This can speed up the heat dissipation of the electric control box 100, thereby reducing the manufacturing cost and improving the working reliability of the air conditioner.

[0118] In some embodiments of the present invention, the refrigerant pipe in the refrigerant circulation system 200 serves as the heat dissipation pipe 4 and is penetrated through the avoidance hole 1 a and the penetration channel 3 a .

[0119] By inserting the refrigerant pipe in the refrigerant circulation system 200 as the heat dissipation pipe 4 through the avoidance hole 1a and the insertion channel 3a, the integrity and sealing of the refrigerant pipe and the heat dissipation pipe 4 of the refrigerant circulation system 200 can be improved, and the occurrence of refrigerant leakage can be reduced.

[0120] In other embodiments of the present invention, the refrigerant pipe in the refrigerant circulation system 200 is connected to the heat dissipation pipe 4 penetrating the avoidance hole 1a and the channel 3a, and the refrigerant in the refrigerant circulation system 200 is transported to the heat dissipation pipe 4 to provide cooling to the heat dissipation pipe 4.

[0121] The heat dissipation pipe 4 and the refrigerant circulation system 200 are separately arranged, and after the refrigerant circulation system 200 and the heat dissipation pipe 4 are installed, the refrigerant pipe of the refrigerant circulation system 200 is connected to the heat dissipation pipe 4, which can reduce the manufacturing difficulty of the heat dissipation pipe 4.

[0122] In some embodiments of the present invention, the electric control box 100 is disposed in the outdoor unit of the air conditioner, and at least a portion of the refrigerant pipe in the outdoor unit serves as a heat dissipation pipe 4 and is passed through the avoidance hole 1a and the passing channel 3a.

[0123] likeFigure 12 As shown, the refrigerant circulation system 200 includes a compressor 201, an outdoor heat exchanger 202, an indoor heat exchanger 203, a throttling device 204 and a reversing component 205. The reversing component 205 is used to switch one of the outdoor heat exchanger 202 and the indoor heat exchanger 203 to be used as a condenser and the other to be used as an evaporator.

[0124] like Figure 12 As shown, the solid line with arrows is the circulation path of the refrigerant in the refrigerant circulation system 200 when the air conditioner cools the room. At this time, the reversing component 205 connects the exhaust port of the compressor 201 with the outdoor heat exchanger 202 and connects the return air port of the compressor 201 with the indoor heat exchanger 203. The outdoor heat exchanger 202 is used as a condenser, and the indoor heat exchanger 203 is used as an evaporator.

[0125] like Figure 12 As shown, the dotted line with an arrow is the circulation path of the refrigerant in the refrigerant circulation system 200 when the air conditioner heats the room. At this time, the reversing component 205 connects the exhaust port of the compressor 201 with the indoor heat exchanger 203, and connects the return air port of the compressor 201 with the outdoor heat exchanger 202. The outdoor heat exchanger 202 is used as an evaporator, and the indoor heat exchanger 203 is used as a condenser.

[0126] In some embodiments of the present invention, Figure 12 As shown, the refrigerant pipe located in the outdoor unit and connected between the throttling device 204 and the evaporator 203 is used as a heat dissipation pipe 4 and is penetrated in the penetration channel 3a.

[0127] In other embodiments of the present invention, the refrigerant pipe located in the outdoor unit and connected between the reversing assembly 205 and the return air port of the compressor 201 can also be used as a heat dissipation pipe 4 and passed through the passing channel 3a.

[0128] Of course, the present application is not limited thereto. In other embodiments of the present application, the refrigerant circulation system 200 may not include the reversing component 205 and may be a cooling-only system.

[0129] In some embodiments of the present invention, the refrigerant circulating in the refrigerant circulation system 200 is a flammable refrigerant.

[0130] By designing the electronic control box 100 as a closed box, the heat pipe 4 is completely separated from the space inside the box body 1 by the radiator 3 and / or the box body 1, which can effectively prevent the flammable refrigerant from entering the box body 1 and contacting the heating element 22, thereby ensuring the safety of the electronic control box 100.

[0131] 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.

[0132] 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, "a plurality of" means two or more, unless otherwise specifically and clearly defined.

[0133] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" should 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 also 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.

[0134] 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 indirectly in 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.

[0135] 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.

[0136] 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 electronic control box, characterized in that, Comprising: A box body; A circuit board, which is arranged in the box body and includes a substrate and a heating device arranged on the substrate; A radiator, which is arranged in the box body and is located between the heating device and the box body. A through-channel for passing a heat dissipation pipe is formed on the radiator or between the radiator and the box body. The radiator is isolated between the through-channel and the heating device. An avoidance hole is formed on the box body for the heat dissipation pipe passing through the through-channel to pass through the box body.

2. The electronic control box according to claim 1, characterized in that, The radiator includes a first radiator. The box body includes a first box cover covering the side of the first radiator away from the circuit board. The first radiator includes an assembled base and a heat dissipation part. The base is arranged between the heat dissipation part and the first box cover. The through-channel includes a first through-channel formed between the base and the heat dissipation part.

3. The electronic control box according to claim 1, characterized in that, The radiator includes a second radiator. The box body includes a first box cover covering the side of the second radiator away from the circuit board. A heat dissipation pipe fitting groove opening in the direction of the first box cover is formed on the side of the second radiator facing the first box cover. The through-channel includes a second through-channel formed between the second radiator and the first box cover. The second through-channel includes the heat dissipation pipe fitting groove.

4. The electronic control box according to claim 1, characterized in that, The heating device and the radiator transfer heat by contacting through a heat conduction medium, and / or, the surface of the heating device facing away from the circuit board contacts the box body to transfer heat.

5. The electronic control box according to claim 1, characterized in that The box body includes a first box cover covering the side of the radiator away from the circuit board. The radiator is assembled to the first box cover through a fastener, or the radiator is integrally connected to the first box cover.

6. The electronic control box according to claim 1, characterized in that, The box body includes a first box cover covering the side of the radiator away from the circuit board. The first box cover is made of metal; or the first box cover includes an inner cover and an outer cover. A window is opened on the inner cover corresponding to the radiator. The outer cover is made of metal and covers the window.

7. The electronic control box according to claim 1, characterized in that, The electric control box includes a heat dissipation pipe. The heat dissipation pipe includes a first part passing through the through-channel and a second part isolated from the box body. The box body separates the second part from the space inside the box body.

8. The electronic control box according to any one of claims 1-7, characterized in that, The through-channel passes through a heat dissipation pipe. The electric control box includes an isolation structure that completely separates the heat dissipation pipe from the space inside the box body. The isolation structure includes the radiator.

9. The electronic control box according to claim 1, characterized in that, The box body includes a first box cover, the first box cover includes a first step portion and a second step portion, the distance from the first step portion to the substrate is smaller than the distance from the second step portion to the substrate, the heating device includes a first heating device and a second heating device, the first heating device and the second heating device are both arranged on a side of the substrate facing the first box cover, and the height of the first heating device is smaller than the height of the second heating device, the first heating device is arranged corresponding to the first step portion, and the radiator is arranged between the first heating device and the first step portion, and the second heating device is arranged corresponding to the second step portion, and the radiator is arranged between the second heating device and the second step portion.

10. The electronic control box according to claim 9, characterized in that, The heat sink disposed between the first heat generating device and the first step portion is spaced apart from the heat sink disposed between the second heat generating device and the second step portion.

11. The electronic control box according to claim 9, characterized in that, The box body further comprises a second box cover, wherein the second box cover and the first box cover are arranged along the thickness direction of the substrate and cover each other, and the first box cover and the second box cover are snap-fitted and / or connected via fasteners.

12. The electronic control box according to claim 1, characterized in that, The box body includes a box body and an operation port cover plate, the box body is provided with a wiring operation port, the operation port cover plate is sealed on the wiring operation port to close the wiring operation port so that the box body is a closed box, the box body is provided with a card slot area located at the wiring operation port, and the card slot area is provided with a sealing rubber ring for threading.

13. The electronic control box according to claim 12, characterized in that, The sealing rubber ring has an expandable opening that passes through in the direction of the operation port cover plate, and the expandable opening passes through the sealing rubber ring in a direction parallel to the operation port cover plate. The wire body passes through the sealing rubber ring by opening the expandable opening. The operation port cover plate has a protrusion that extends toward the box body, and the protrusion extends into the expandable opening.

14. The electronic control box according to claim 12, characterized in that, The box body includes a first box cover and a second box cover, the second box cover and the first box cover are arranged along the thickness direction of the substrate and cover each other, the heat sink is arranged between the first box cover and the heating device, the card slot area and the wiring operation port are both formed on the first box cover, and the operation port cover plate is snap-fitted to the first box cover and / or connected by fasteners.

15. An air conditioner, characterized in that, It comprises a refrigerant circulation system and an electric control box according to any one of claims 1 to 14, wherein the refrigerant circulation system provides cooling to the heat dissipation pipe penetrating the penetrating channel.

16. The air conditioner according to claim 15, characterized in that, The refrigerant pipe in the refrigerant circulation system serves as the heat dissipation pipe and is penetrated through the avoidance hole and the penetration channel, or the refrigerant pipe in the refrigerant circulation system is connected to the heat dissipation pipe penetrated through the avoidance hole and the penetration channel.

17. The air conditioner according to claim 15, characterized in that, The electric control box is arranged in the outdoor unit of the air conditioner, the refrigerant pipe in the outdoor unit serves as the heat dissipation pipe and is passed through the avoidance hole and the passing channel; and / or, the refrigerant circulating in the refrigerant circulation system is a flammable refrigerant.

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