Radiator and air conditioner

Abstract

The radiator comprises a heat pipe, a hot end and a cold end, and the hot end is located at one end of the heat pipe and attached to a power device on an electric control board so that heat of the power device can be transmitted to a working medium in the heat pipe; the cold end is provided with a hollow structure, a refrigerant inlet end and a refrigerant outlet end, the refrigerant inlet end and the refrigerant outlet end are communicated with the hollow structure, the other end of the heat pipe penetrates through the hollow structure, and particularly, a refrigerant flows into the hollow structure from the refrigerant inlet end, absorbs heat of a working medium in the heat pipe and then flows out of the refrigerant outlet end. According to the embodiment of the invention, the refrigerant is used as the cold source of the cold end, and a structure combining the cold end, the heat pipe and the hot end is adopted, so that the refrigerant can be prevented from directly cooling the electric control board, the condensation phenomenon of the electric control board can be reduced, the damage risk of the electric control board is reduced, and the operation reliability of the air conditioner is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to a radiator and an air conditioner. Background Art

[0002] In the related art, with the continuous improvement of integration and power, the heat dissipation of the outdoor unit electronic control board of the air conditioner has become more and more challenging. Especially under extreme ambient temperatures, effective and reliable heat dissipation is the guarantee of the operating performance of the air conditioner. Among various heat dissipation methods, the cooling effect of refrigerant heat dissipation is relatively significant. It allows the cooler refrigerant to flow through the heat exchanger, thereby taking away the heat generated by the power devices on the electronic control board. However, the above cooling method usually has the following problems: Since the refrigerant directly cools the electronic control board through the substrate, there is a risk of condensation on the electronic control board. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a radiator and an air conditioner, which are intended to reduce the phenomenon of condensation on an electric control panel.

[0004] In a first aspect, an embodiment of the present application provides a heat sink, comprising:

[0005] Heat pipes;

[0006] A hot end, located at one end of the heat pipe, and used to be attached to a power device on an electric control board to transfer heat from the power device to the working medium in the heat pipe;

[0007] The cold end is provided with a hollow structure and a refrigerant inlet end and a refrigerant outlet end connected to the hollow structure, and the other end of the heat pipe is passed through the hollow structure, wherein the refrigerant flows into the hollow structure from the refrigerant inlet end, and flows out from the refrigerant outlet end after absorbing the heat of the working fluid in the heat pipe.

[0008] According to some embodiments of the present application, the hot end is a heat-conducting substrate with a solid structure, the heat-conducting substrate is used to cover the surface of the power device, and the shape of the heat-conducting substrate corresponds to the arrangement shape of the power device.

[0009] According to some embodiments of the present application, one of the following is included:

[0010] The heat pipe is embedded in the interior of the heat conductive substrate through an expansion and contraction process;

[0011] The heat-conducting substrate includes a first cover plate and a second cover plate, and the first cover plate and the second cover plate are overlapped to form a channel for accommodating the heat pipe.

[0012] According to some embodiments of the present application, the cold end is in the shape of a flat rectangular parallelepiped along the axial direction of the heat pipe.

[0013] According to some embodiments of the present application, the direction of the refrigerant flowing from the refrigerant inlet end to the refrigerant outlet end is opposite to the movement direction of the gaseous working medium in the heat pipe.

[0014] According to some embodiments of the present application, the cold end is provided with a first side and a second side facing each other, wherein the heat pipe extends into the hollow structure through the first side, the refrigerant inlet is provided on the second side, and the refrigerant outlet is provided on the first side.

[0015] According to some embodiments of the present application, a height of the refrigerant outlet end in the vertical direction is lower than a height of the refrigerant inlet end in the vertical direction.

[0016] According to some embodiments of the present application, the cold end is further provided with one of the following:

[0017] A spoiler component is arranged in the hollow structure;

[0018] The reinforcing ribs are arranged in the hollow structure and connected to the heat pipe inside the hollow structure.

[0019] According to some embodiments of the present application, the cold end is also provided with a temperature sensor and a flow regulating valve, the temperature sensor is arranged at the refrigerant inlet end and the refrigerant outlet end, and the flow regulating valve is arranged at the refrigerant inlet end and / or the refrigerant outlet end.

[0020] According to some embodiments of the present application, a portion of the heat pipe located between the hot end and the cold end is bent, wherein a height of the cold end in the vertical direction is lower than a height of the hot end in the vertical direction.

[0021] According to some embodiments of the present application, there are multiple heat pipes, and the multiple heat pipes are arranged in the same plane or in different planes.

[0022] According to some embodiments of the present application, the heat pipe includes one of the following:

[0023] The heat pipe is in a strip shape;

[0024] The heat pipe is in a ring shape, wherein the interior of the heat pipe does not have a liquid wick.

[0025] In a second aspect, an embodiment of the present application further provides an air conditioner, comprising an electric control board and the heat sink of the first aspect described above, wherein a power device is disposed on the electric control board, and the hot end in the heat sink is attached to the power device.

[0026] According to some embodiments of the present application, the air conditioner also includes a compressor, a condenser and an evaporator, a refrigerant circulation loop is arranged between the compressor, the condenser and the evaporator, the refrigerant inlet end is connected to the outlet of the condenser, and the refrigerant outlet end is connected to the return air port of the compressor or the inlet of the evaporator.

[0027] According to some embodiments of the present application, the electric control board is an outdoor unit electric control board.

[0028] According to the technical solution of the embodiment of the present application, at least the following beneficial effects are achieved: the heat sink of the embodiment of the present application includes a heat pipe, a hot end and a cold end, wherein the hot end is located at one end of the heat pipe and is attached to the power device on the electric control board to transfer the heat of the power device to the working medium in the heat pipe; the cold end is provided with a hollow structure and a refrigerant inlet end and a refrigerant outlet end connected to the hollow structure, and the other end of the heat pipe is penetrated through the hollow structure, specifically, the refrigerant flows into the hollow structure from the refrigerant inlet end, and flows out from the refrigerant outlet end after absorbing the heat of the working medium in the heat pipe. Since the embodiment of the present application uses the refrigerant as the cold source of the cold end, and adopts a structure combining the cold end, the heat pipe and the hot end, it is possible to avoid the refrigerant directly cooling the electric control board, thereby reducing the occurrence of condensation on the electric control board, reducing the risk of damage to the electric control board, and improving the reliability of the air conditioner operation.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0031] Figure 1 is a structural schematic diagram of a radiator provided by an embodiment of the present application;

[0032] Figure 2 is a schematic structural diagram of a hot end in a heat sink provided by an embodiment of the present application;

[0033] Figure 3 is a schematic structural diagram of a cold end in a radiator provided in one embodiment of the present application;

[0034] Figure 4 is a structural schematic diagram of a radiator provided by another embodiment of the present application;

[0035] Figure 5 is a structural schematic diagram of a radiator provided by another embodiment of the present application;

[0036] Figure 6 is a structural schematic diagram of a radiator provided by another embodiment of the present application;

[0037] Figure 7 is a structural schematic diagram of an air conditioner provided by an embodiment of the present application;

[0038] Figure 8 is a structural schematic diagram of an air conditioner provided by another embodiment of the present application;

[0039] Fig. 9 It is a structural schematic diagram of an air conditioner provided in another embodiment of the present application. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0044] In some cases, as the integration and power continue to increase, the heat dissipation of the outdoor unit electronic control board of the air conditioner becomes more and more challenging. The heat generated by the main power devices on the electronic control board of the variable frequency air conditioner is often very large. If the heat cannot be effectively dissipated in time, the sudden temperature rise will not only affect the service life of the electronic control board, but also greatly limit the real-time working performance of the air conditioner. Especially in extreme ambient temperatures, effective and reliable heat dissipation methods are the guarantee of the operating performance of the air conditioner. Among various heat dissipation methods, the cooling effect of refrigerant heat dissipation is relatively significant. It allows the cooler refrigerant to flow through the heat exchanger, thereby taking away the heat generated by the power devices on the electronic control board.

[0045] However, the above-mentioned refrigerant heat dissipation method usually has the following problems: First, since the refrigerant directly cools the electric control board through the base plate, when the temperature of the electric control board is lower than the ambient temperature and the water vapor saturation in the air reaches a certain level, condensation is likely to occur on the electric control board, which will cause a short circuit in the electric control board. Second, due to the limitation of the flow path, the structure of the refrigerant radiator is relatively simple and is not conducive to disassembly during later maintenance.

[0046] Based on the above situation, the embodiments of the present application propose a radiator and an air conditioner, which are intended to not only reduce the condensation phenomenon on the electric control board, but also facilitate subsequent maintenance and disassembly.

[0047] Various embodiments of the heat sink of the present application are further described below in conjunction with the accompanying drawings.

[0048] like Figure 1 As shown, Figure 1 It is a schematic diagram of the structure of a radiator provided in one embodiment of the present application.

[0049] In one embodiment, the heat sink 100 of the embodiment of the present application includes but is not limited to a heat pipe 110, a hot end 120 and a cold end 130, wherein the hot end 120 is arranged at the first end of the heat pipe 110, and the cold end 130 is arranged at the second end of the heat pipe 110; the hot end 120 is used to fit with the power device 210 on the electric control board 200 to transfer the heat of the power device 210 to the working medium in the heat pipe 110; the cold end 130 is provided with a hollow structure, a refrigerant inlet end 131 and a refrigerant outlet end 132, the refrigerant inlet end 131 and the refrigerant outlet end 132 are both connected to the hollow structure, and the second end of the heat pipe 110 is penetrated through the hollow structure. The refrigerant flows into the hollow structure from the refrigerant inlet end 131, and flows out from the refrigerant outlet end 132 after absorbing the heat of the working medium in the heat pipe 110.

[0050] Specifically, during operation, the hot end 120 transfers the heat on the power device 210 to the heat pipe 110 through heat conduction, so that the working fluid in the hot end 120 of the heat pipe 110 evaporates into gas and flows to the cold end 130 of the heat pipe 110. Then, the heat is transferred to the refrigerant by heat convection at the cold end 130, and the working fluid is cooled into liquid and flows back to the hot end 120 of the heat pipe 110. In this way, the radiator 100 can achieve continuous and efficient heat dissipation of the variable frequency air conditioner electric control board 200.

[0051] It should be noted that the heat pipe 110 technology fully utilizes the heat conduction principle and the rapid heat transfer property of the phase change medium to quickly transfer the heat of the heat-generating object to the outside of the heat source through the heat pipe 110. Specifically, in the evaporation section of the heat pipe 110, the working liquid in the tube core evaporates due to heat and takes away heat, which is the latent heat of evaporation of the working liquid. The steam flows from the central channel to the condensation section of the heat pipe 110, condenses into liquid, and releases latent heat at the same time. Under the action of capillary force, the liquid flows back to the evaporation section.

[0052] It is worth noting that, firstly, since the embodiment of the present application uses a relatively low temperature and flowing refrigerant as the cold source of the cold end 130, the cold end 130 of the heat pipe 110 can be effectively cooled, providing a strong driving force for the flow of the working medium in the heat pipe 110, thereby improving the heat dissipation performance of the electric control board 200. Secondly, since the embodiment of the present application uses a refrigerant as the cold source of the cold end 130, and adopts a structure combining the cold end 130, the heat pipe 110 and the hot end 120, it can avoid the refrigerant directly cooling the electric control board 200, thereby reducing the condensation phenomenon of the electric control board 200, reducing the risk of damage to the electric control board 200, and improving the reliability of the air conditioner operation. In addition, since the embodiment of the present application adopts a structure combining the cold end 130, the heat pipe 110 and the hot end 120, there is no need to be restricted by the flow path, and the refrigerant radiator 100 of different structural forms can be set, and it is also convenient for disassembly during later maintenance.

[0053] like Figure 2 As shown, Figure 2 1 is a schematic diagram of the structure of the hot end 120 in the heat sink 100 provided in one embodiment of the present application.

[0054] In one embodiment, the hot end 120 is a heat-conducting substrate with a solid structure. The heat-conducting substrate is used to cover the surface of the power device 210 . The shape of the heat-conducting substrate corresponds to the arrangement shape of the power device 210 .

[0055] It is understandable that since the hot end 120 is a solid structure heat-conducting substrate, the overall thermal conductivity of the hot end 120 can be better, so the overall thermal conductivity of the hot end 120 is better, which can improve the heat conduction effect between the hot end 120 and the heat pipe 110.

[0056] It should be noted that, since the thermally conductive substrate covers the surface of the power device 210 , the thermally conductive substrate can directly contact the heat dissipation surface of the power device 210 , so that the thermally conductive substrate can transfer the heat of the heat dissipation surface faster and better.

[0057] In addition, it should be noted that since the shape of the thermally conductive substrate corresponds to the arrangement shape of the power devices 210, the embodiment of the present application can not only dissipate heat for multiple power devices 210 at the same time, thereby meeting the heat dissipation requirements of the power devices 210, but also can appropriately reduce the excess substrate area at the edge, thereby making the structure of the electric control board 200 and the thermally conductive substrate more compact and reducing production costs.

[0058] For example, if the overall arrangement shape of the power devices 210 on the electric control board 200 is a straight line, then the embodiment of the present application can design the thermal conductive substrate to be a long strip; if the overall arrangement shape of the power devices 210 on the electric control board 200 is a matrix, then the embodiment of the present application can design the thermal conductive substrate to be a square or a rectangle; if the overall arrangement shape of the power devices 210 on the electric control board 200 is an irregular shape, then the embodiment of the present application can also design the thermal conductive substrate to be an irregular shape accordingly.

[0059] In one embodiment, the assembly method between the heat pipe 110 and the heat conductive substrate may include but is not limited to the following two assembly structures:

[0060] The first assembly structure: the heat pipe 110 is embedded in the interior of the heat-conducting substrate through an expansion and contraction process. Among them, the expansion and contraction process is a manufacturing technology. Its basic principle is to control the temperature, pressure and other process parameters during the manufacturing process of the parts and components to make the material expand and contract, so as to achieve control of the size and shape of the parts and components during the processing. Through the expansion and contraction process, parts with complex shapes and precise dimensions can be manufactured, and their precision and stability can be significantly improved. There are many specific implementation methods of the expansion and contraction process, such as thermal expansion process, cold contraction process, heat shrinkage process, etc. Among them, the thermal expansion process is to expand the material by heating, and then process it; the cold contraction process is to shrink the material by cooling, and then process it; the heat shrinkage process is to shrink the material by heating to achieve the purpose of reducing the size.

[0061] The second assembly structure and the heat-conducting substrate include a first cover plate and a second cover plate, which are covered with each other to form a channel for accommodating the heat pipe 110. Specifically, the first cover plate and the second cover plate are both provided with corresponding half grooves, and firstly, the heat pipe 110 can be placed in the half groove of the first cover plate, and then the first cover plate and the second cover plate are combined together, so that the half groove of the first cover plate and the half groove of the second cover plate can be combined to form a channel for accommodating the heat pipe 110, thereby realizing the assembly between the heat pipe 110 and the heat-conducting substrate.

[0062] like Figure 3 As shown, Figure 3 1 is a schematic diagram of the structure of the cold end 130 in the heat sink 100 provided in one embodiment of the present application.

[0063] In one embodiment, the cold end 130 is a shell of a hollow structure, forming a flow channel for a refrigerant as a cold source. A refrigerant inlet 131 and a refrigerant outlet 132 are respectively provided on opposite sides of the cold end 130. In addition, at the cold end 130, the heat pipe 110 extends into the shell and is immersed in the refrigerant. The refrigerant flows into the hollow structure from the refrigerant inlet 131, absorbs the heat of the heat pipe 110 in the hollow structure, and then flows out from the refrigerant outlet 132.

[0064] It can be understood that the shape of the cold end 130 may be a rectangular parallelepiped, a cube, or other shapes. The embodiment of the present application does not specifically limit the shape of the cold end 130 .

[0065] In one embodiment, if Figure 3 As shown, the cold end 130 is a flat rectangular parallelepiped along the axial direction of the heat pipe 110. Specifically, the shell of the cold end 130 can be a slightly flat and elongated rectangular parallelepiped along the axial direction of the heat pipe 110, and the portion of the heat pipe 110 located at the cold end 130 forms a structure similar to a shell-and-tube heat exchanger.

[0066] In one embodiment, the direction of the refrigerant flowing from the refrigerant inlet end 131 to the refrigerant outlet end 132 is opposite to the direction of movement of the gaseous working medium in the heat pipe 110. Specifically, the embodiment of the present application can design the direction of the refrigerant in the hollow structure to be opposite to the direction of movement of the gaseous working medium in the heat pipe 110, thereby increasing the intensity of convective heat exchange at the cold end 130 and achieving a better heat exchange effect.

[0067] In one embodiment, if Figure 3As shown, the cold end 130 is provided with a first side surface and a second side surface opposite to each other, wherein the heat pipe 110 extends into the hollow structure through the first side surface, the refrigerant inlet end 131 is provided on the second side surface, and the refrigerant outlet end 132 is provided on the first side surface. Specifically, in order to improve the intensity of convective heat exchange at the cold end 130, firstly, the refrigerant inlet end 131 and the refrigerant outlet end 132 are respectively provided on the surface of the cold end 130 facing away from and facing the hot end 120. By such a design method, the flow direction of the refrigerant can be opposite to the movement direction of the gaseous working medium in the heat pipe 110, thereby improving the heat exchange effect at the cold end 130.

[0068] It is understandable that the positional relationship between the first side surface and the second side surface of the cold end 130 may be as follows: Figure 3 The relative side surfaces shown may also be in other positional relationships. For example, the first side surface and the second side surface may be adjacent side surfaces. The embodiment of the present application does not specifically limit the positional relationship between the first side surface and the second side surface.

[0069] In one embodiment, if Figure 3 As shown, the height of the refrigerant outlet end 132 in the vertical direction is lower than the height of the refrigerant inlet end 131 in the vertical direction. Specifically, the position of the refrigerant outlet end 132 of the cold end 130 is lower than the refrigerant inlet end 131 of the cold end 130 in the vertical direction, so that the refrigerant can enter from the top and exit from the bottom, thereby enhancing the kinetic energy of the refrigerant flow to a certain extent, thereby improving the intensity of convective heat exchange at the cold end 130, and the heat exchange effect is better.

[0070] It can be understood that the height difference between the refrigerant outlet end 132 and the refrigerant inlet end 131 in the vertical direction can be one centimeter, two centimeters, or other sizes. The embodiment of the present application does not specifically limit the height difference between the refrigerant outlet end 132 and the refrigerant inlet end 131 in the vertical direction.

[0071] In one embodiment, the cold end 130 is further provided with a spoiler, wherein the spoiler is provided in the hollow structure. Specifically, the embodiment of the present application can increase the turbulence of the refrigerant movement in the hollow structure by providing the spoiler in the hollow structure, thereby improving the intensity of convective heat exchange at the cold end 130 to a certain extent.

[0072] In one embodiment, the cold end 130 is further provided with a reinforcing rib 133, wherein the reinforcing rib 133 is provided in the hollow structure and connected to the heat pipe 110 inside the hollow structure. Specifically, the embodiment of the present application can improve the structural stability between the cold end 130 and the heat pipe 110 by providing the reinforcing rib 133 in the hollow structure.

[0073] It is worth noting that when the spoiler component and the reinforcing rib 133 are the same component, that is, the reinforcing rib 133 can not only increase the turbulence of the refrigerant movement in the hollow structure, thereby improving the intensity of convective heat transfer at the cold end 130 to a certain extent, but also improve the structural stability between the cold end 130 and the heat pipe 110.

[0074] In one embodiment, the cold end 130 is further provided with a temperature sensor and a flow regulating valve. The temperature sensor is provided at the refrigerant inlet end 131 and the refrigerant outlet end 132 , and the flow regulating valve is provided at the refrigerant inlet end 131 and / or the refrigerant outlet end 132 .

[0075] Specifically, in the embodiment of the present application, a temperature sensor and a flow regulating valve may be set at the refrigerant inlet end 131 and the refrigerant outlet end 132, and the opening or opening degree of the flow regulating valve may be adjusted according to the signal of the temperature sensor, so that the temperature of the hot end 120 is maintained within a preset range by controlling the heat exchange condition of the cold end 130.

[0076] Among them, if the refrigerant inlet end 131 and / or the refrigerant outlet end 132 are both provided with flow regulating valves, then the flow regulating valves on the refrigerant inlet end 131 and the refrigerant outlet end 132 can be adjusted synchronously or asynchronously, and the embodiment of the present application does not make specific limitations on this.

[0077] In one embodiment, the embodiment of the present application can detect the temperature of the power device 210 and the ambient temperature around the electric control board 200. In addition, the embodiment of the present application will also calculate a safe temperature difference threshold for preventing condensation of the power device 210; then, the embodiment of the present application will calculate the sum of the ambient temperature and the safe temperature difference threshold, and compare the temperature of the power device 210 with the sum to obtain a comparison result; finally, the switching state of the flow control valve is controlled according to the comparison result.

[0078] In one embodiment, if the temperature of the power device 210 is lower than the sum of the ambient temperature and the safety temperature difference threshold, condensation may easily occur on the surface of the power device 210, and therefore, the flow regulating valve will be closed in the embodiment of the present application; if the temperature of the power device 210 is greater than or equal to the sum of the ambient temperature and the safety temperature difference threshold, condensation will not occur on the surface of the power device 210, and therefore, the flow regulating valve will be opened in the embodiment of the present application.

[0079] In one embodiment, the embodiment of the present application can detect the refrigerant inlet temperature of the cold end 130 of the refrigerant inlet end 131 and the refrigerant outlet temperature of the cold end 130 of the refrigerant outlet end 132 through a temperature sensor. In addition, the embodiment of the present application will also pre-set a temperature rise threshold; then, the embodiment of the present application will calculate the temperature difference between the refrigerant outlet temperature of the cold end 130 and the refrigerant inlet temperature of the cold end 130, and compare the temperature difference with the temperature rise threshold to obtain a comparison result; finally, the opening of the flow control valve is controlled according to the comparison result.

[0080] In one embodiment, if the temperature difference between the refrigerant outlet temperature of the cold end 130 and the refrigerant inlet temperature of the cold end 130 is between the first temperature rise threshold and the second temperature rise threshold, it indicates that the current refrigerant flow is appropriate, and the opening of the flow regulating valve can be kept unchanged at this time; if the temperature difference between the refrigerant outlet temperature of the cold end 130 and the refrigerant inlet temperature of the cold end 130 is less than the first temperature rise threshold, it indicates that the current refrigerant flow is large, and the opening of the flow regulating valve can be reduced at this time; if the temperature difference between the refrigerant outlet temperature of the cold end 130 and the refrigerant inlet temperature of the cold end 130 is greater than the second temperature rise threshold, it indicates that the current refrigerant flow is small, and the opening of the flow regulating valve can be increased at this time.

[0081] like Figure 4 As shown, Figure 4 It is a schematic structural diagram of a heat sink 100 provided in another embodiment of the present application.

[0082] In one embodiment, the portion of the heat pipe 110 between the hot end 120 and the cold end 130 is bent, wherein the height of the cold end 130 in the vertical direction is lower than the height of the hot end 120 in the vertical direction.

[0083] The embodiment of the present application can use a refrigerant with a relatively low temperature and high flow turbulence as a cold source. The flow power of the working medium in the heat pipe 110 is strong, and the radiator 100 can be flexibly designed according to the space of the compressor cavity of the air conditioner external unit. Figure 4 The shape structure shown can use a heat pipe 110 with a bend, and the height of the cold end 130 in the vertical direction is lower than the hot end 120.

[0084] In addition, when there are multiple heat pipes 110, the arrangement of the heat pipes 110 may include but is not limited to the following two arrangements:

[0085] The first arrangement method, such as Figure 1 , Figure 3 and Figure 4 As shown, a plurality of heat pipes 110 may be arranged on the same plane.

[0086] The second arrangement method, such as Figure 5As shown, a plurality of heat pipes 110 may be arranged on different planes, which may make the overall structure of the heat sink 100 more compact.

[0087] In addition, it is understood that the shape of the heat pipe 110 can be as follows: Figures 1 to 5 The bar shape shown can also be Figure 6 The ring shape shown may also be other shapes, which are not specifically limited in the present application. When the heat pipe 110 is in a strip shape, the heat pipe 110 may have a liquid wick inside; when the heat pipe 110 is in a ring shape, the heat pipe 110 may not have a liquid wick inside.

[0088] It should be noted that the flow of the working medium in the ring-shaped heat pipe 110 has strong power, so a pulsating heat pipe 110 with a coreless ring structure can be used to achieve the oscillating flow of the working medium at the first end and the second end by relying on the pressure difference between the first end and the second end of the heat pipe 110 and the pressure imbalance between adjacent pipes. Compared with the strip-shaped heat pipe 110 with a tube core, the ring-shaped heat pipe 110 can achieve a miniaturized design and lower cost.

[0089] It is understandable that the shell material, tube core, working fluid, filling rate and number of heat pipes 110 of the heat pipe 110 can be determined according to the actual working environment, and the embodiment of the present application does not make any specific limitation on this.

[0090] Based on the radiator 100 of each of the above-mentioned embodiments, various embodiments of the air conditioner of the present application are respectively proposed below.

[0091] like Figures 7 to 9 As shown, Figures 7 to 9 They are respectively structural schematic diagrams of air conditioners provided in multiple embodiments of the present application.

[0092] In one embodiment, the air conditioner of the embodiment of the present application may include an electric control board 200 and a heat sink 100 of any of the above embodiments, wherein a power device 210 is disposed on the electric control board 200 , and the hot end 120 in the heat sink 100 is attached to the power device 210 .

[0093] It is worth noting that since the air conditioner of the embodiment of the present application includes the radiator 100 of any of the above embodiments, the specific implementation methods and technical effects of the air conditioner of the embodiment of the present application can refer to the specific implementation methods and technical effects of the radiator 100 of any of the above embodiments.

[0094] In one embodiment, the air conditioner also includes a compressor 310, a condenser 330 and an evaporator 350. A refrigerant circulation loop is arranged between the compressor 310, the condenser 330 and the evaporator 350. The refrigerant inlet end 131 is connected to the outlet of the condenser 330, and the refrigerant outlet end 132 is connected to the return air port of the compressor 310 or the inlet of the evaporator 350.

[0095] In one embodiment, if Figure 7 As shown, the air conditioner also includes but is not limited to a refrigerant circulation branch, the cold end 130 is arranged on the refrigerant circulation branch, the inlet end of the refrigerant circulation branch is connected to the refrigerant circulation main path between the condenser 330 and the evaporator 350, and the outlet end of the refrigerant circulation branch is connected to the return air port of the compressor 310.

[0096] In addition, in one embodiment, if Figure 7 As shown, the air conditioner further includes a flow regulating valve, which is arranged on the refrigerant flow branch on the side where the refrigerant inlet end 131 is located and / or the refrigerant flow branch on the side where the refrigerant outlet end 132 is located.

[0097] for Figure 7 The structural schematic diagram of the air conditioner shown in the figure includes a compressor 310, a four-way valve 320, an outdoor heat exchanger (i.e., a condenser 330), an electronic expansion valve 340, an indoor heat exchanger (i.e., an evaporator 350), an electric control board 200, a radiator 100, a first flow regulating valve 410, a second flow regulating valve 420, a first temperature sensor 510 and a second temperature sensor 520, wherein the hot end 120 of the radiator 100 is tightly fitted with the power device 210 on the electric control board 200 to exchange heat with the power device 210, the refrigerant inlet end 131 is connected to the outlet side of the outdoor heat exchanger, the refrigerant outlet end 132 is connected to the air intake of the compressor 310, and a flow regulating valve and a temperature sensor are respectively provided on the refrigerant inlet end 131 and the refrigerant outlet end 132, and the opening of the flow regulating valve can be adjusted according to the refrigerant inlet temperature of the cold end 130 and the refrigerant outlet temperature of the cold end 130.

[0098] In addition, the air conditioner also includes but is not limited to a third temperature sensor for detecting the temperature of the power device 210, and a fourth temperature sensor for detecting the ambient temperature of the electric control board 200. The air conditioner can adjust the opening and closing of the flow control valve according to the temperature of the power device 210 and the ambient temperature of the electric control board 200.

[0099] In one embodiment, if Figure 8 and Fig. 9 As shown, the cold end 130 is arranged in the main refrigerant flow path between the condenser 330 and the evaporator 350 , the refrigerant inlet end 131 of the cold end 130 is connected to the outlet of the condenser 330 , and the refrigerant outlet end 132 of the cold end 130 is connected to the inlet of the evaporator 350 .

[0100] In addition, in one embodiment, the air conditioner further includes an electronic expansion valve 340 , which is disposed between the condenser 330 and the cold end 130 , or between the cold end 130 and the evaporator 350 .

[0101] Specifically, for Figure 8 In the air conditioner shown in FIG. 1 , the refrigerant inlet port 131 is connected to the outlet side of the outdoor heat exchanger, and the refrigerant outlet port 132 is connected to the electronic expansion valve 340. Fig. 9 In the air conditioner shown, the refrigerant inlet port 131 is connected to the electronic expansion valve 340, and the refrigerant outlet port 132 is connected to the inlet side of the indoor heat exchanger.

[0102] It should be noted that if Figure 8 and Fig. 9 As shown in FIG. 1 , the refrigerant flowing out of the outdoor heat exchanger passes through the radiator 100 before flowing into the indoor heat exchanger. Figure 7 compared to, Figure 8 and Fig. 9 The air conditioner shown in the figure has no additional flow regulating valve to regulate the flow of the refrigerant flowing into the cold end 130, so it is relatively simple and economical to implement, but the regulation of the heat dissipation capacity of the heat pipe 110 is relatively weak.

[0103] It should be noted that the electric control panel 200 mentioned above may be the electric control panel 200 of an indoor unit or the electric control panel 200 of an outdoor unit.

[0104] Regarding the various embodiments of the above-mentioned radiator 100 and air conditioner, the technical effects include but are not limited to the following points:

[0105] First, the electric control board 200 generates a lot of heat during operation. At the same time, the cold end 130 uses a relatively low-temperature refrigerant as a cold source to ensure effective cooling, providing a strong driving force for the flow of the working medium in the heat pipe 110. In this way, not only can the electric control board 200 be promptly and efficiently cooled, but also the relative positions of the cold end 130 and the hot end 120 in the radiator 100 and the shape of the heat pipe 110 can be flexibly designed, so as to be suitable for outdoor units of air conditioners with different structures.

[0106] Second, since the embodiment of the present application uses a refrigerant as the cold source of the cold end 130 and adopts a structure combining the cold end 130, the heat pipe 110 and the hot end 120, it is possible to avoid the refrigerant directly cooling the electric control board 200, thereby reducing the occurrence of condensation on the electric control board 200, reducing the risk of damage to the electric control board 200, and improving the reliability of the air conditioner operation.

[0107] Third, since the embodiment of the present application adopts a structure combining the cold end 130, the heat pipe 110 and the hot end 120, there is no need to be restricted by the flow path, and refrigerant radiators 100 of different structural forms can be set, which is also convenient for disassembly during later maintenance.

[0108] Fourth, when the flow regulating valve is open, the opening of the flow regulating valve can be adjusted according to the temperature difference between the refrigerant outlet of the cold end 130 and the refrigerant inlet of the cold end 130. In this way, on the one hand, the heat pipe 110 part on the cold end 130 side can be fully cooled, the power of the working medium flow can be guaranteed, and the heat can be efficiently dissipated to achieve temperature control. On the other hand, the refrigerant used for heat dissipation can be used economically to minimize the impact on the working performance of the air conditioner.

[0109] Fifth, the opening and closing of the flow control valve is regulated according to the temperature of the power device 210 and the temperature of the environment around the electric control board 200 to ensure that the temperature of the power device 210 is not lower than the ambient temperature, which can effectively avoid the occurrence of condensation.

[0110] The above specifically describes the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A radiator, characterized in that: include: Heat pipes; A hot end, located at one end of the heat pipe, and used to be attached to a power device on an electric control board to transfer heat from the power device to the working medium in the heat pipe; The cold end is provided with a hollow structure and a refrigerant inlet end and a refrigerant outlet end connected to the hollow structure, and the other end of the heat pipe is passed through the hollow structure, wherein the refrigerant flows into the hollow structure from the refrigerant inlet end, and flows out from the refrigerant outlet end after absorbing the heat of the working fluid in the heat pipe.

2. The heat sink according to claim 1, characterized in that: The hot end is a heat-conducting substrate with a solid structure. The heat-conducting substrate is used to cover the surface of the power device. The shape of the heat-conducting substrate corresponds to the arrangement shape of the power device.

3. The heat sink according to claim 2, characterized in that: Include one of the following: The heat pipe is embedded in the interior of the heat conductive substrate through an expansion and contraction process; The heat-conducting substrate includes a first cover plate and a second cover plate, and the first cover plate and the second cover plate are overlapped to form a channel for accommodating the heat pipe.

4. The heat sink according to claim 1, characterized in that: The cold end is in a flat rectangular parallelepiped shape along the axial direction of the heat pipe.

5. The heat sink according to claim 1, characterized in that The direction of the refrigerant flowing from the refrigerant inlet end to the refrigerant outlet end is opposite to the moving direction of the gaseous working medium in the heat pipe.

6. The heat sink according to claim 5, characterized in that: The cold end is provided with a first side surface and a second side surface opposite to each other, wherein the heat pipe extends into the hollow structure through the first side surface, the refrigerant inlet end is provided on the second side surface, and the refrigerant outlet end is provided on the first side surface.

7. The heat sink according to claim 1, characterized in that: The height of the refrigerant outlet end in the vertical direction is lower than the height of the refrigerant inlet end in the vertical direction.

8. The heat sink according to claim 1, characterized in that The cold end is also provided with one of the following: A spoiler component is arranged in the hollow structure; The reinforcing ribs are arranged in the hollow structure and connected to the heat pipe inside the hollow structure.

9. The heat sink according to claim 1, characterized in that: The cold end is also provided with a temperature sensor and a flow regulating valve. The temperature sensor is provided at the refrigerant inlet end and the refrigerant outlet end. The flow regulating valve is provided at the refrigerant inlet end and / or the refrigerant outlet end.

10. The heat sink according to claim 1, characterized in that The portion of the heat pipe located between the hot end and the cold end is bent, wherein the height of the cold end in the vertical direction is lower than the height of the hot end in the vertical direction.

11. The heat sink according to claim 1, characterized in that There are multiple heat pipes, and the multiple heat pipes are arranged on the same plane or on different planes.

12. The heat sink according to claim 1, characterized in that The heat pipe comprises one of the following: The heat pipe is in a strip shape; The heat pipe is in a ring shape, wherein the interior of the heat pipe does not have a liquid wick.

13. An air conditioner, characterized in that: It comprises an electric control board and the heat sink as claimed in any one of claims 1 to 12, wherein a power device is arranged on the electric control board, and the hot end in the heat sink is attached to the power device.

14. The air conditioner according to claim 13, characterized in that: The air conditioner also includes a compressor, a condenser and an evaporator. A refrigerant circulation loop is provided between the compressor, the condenser and the evaporator. The refrigerant inlet end is connected to the outlet of the condenser, and the refrigerant outlet end is connected to the return air port of the compressor or the inlet of the evaporator.

15. The air conditioner according to claim 13, characterized in that: The electric control board is an outdoor unit electric control board.

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