Evaporator, heat dissipation device, electronic equipment and vehicle

Abstract

The utility model relates to an evaporator, a heat dissipation device, electronic equipment and a vehicle, and relates to the technical field of heat dissipation. The evaporator comprises a shell, the shell is provided with a first surface, a first outlet and a first inlet, the first surface is provided with a first heat exchange runner, and the two ends of the first heat exchange runner communicate with the first outlet and the first inlet correspondingly. The first heat exchange flow channel is formed in the surface of the shell, so that the part, used for forming the first heat exchange flow channel, of the evaporator is of an opening structure, and therefore a heat exchange medium in the first heat exchange flow channel can make direct contact with the heat dissipation face of a heating device; the heat conduction path between the evaporator and the heating device is shortened, and the heat resistance between the heat exchange medium and the heating device is reduced, so that the heat exchange medium in the first heat exchange runner can directly absorb the heat of the heating device. Therefore, the heat dissipation efficiency of the evaporator can be improved, and the heat dissipation efficiency of the electronic equipment can be improved.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology, and more particularly to an evaporator, heat dissipation device, electronic equipment, and vehicle. Background Technology

[0002] With the development of electronic devices such as heat-generating components (e.g., power devices), their integration level and heat generation are constantly increasing, leading to a gradual increase in the heat flux density generated during operation. When heat dissipation capacity is insufficient, heat-generating components are prone to overheating, which can reduce their lifespan or even cause them to burn out. This, in turn, affects the performance and stability of related equipment.

[0003] Therefore, how to improve the heat dissipation efficiency of electronic devices to solve the high temperature problem of electronic devices is the problem that this application aims to solve. Utility Model Content

[0004] This application provides an evaporator that improves the heat dissipation efficiency of the evaporator, thereby at least solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, an evaporator is provided, the evaporator including a shell having a first surface, a first outlet and a first inlet, the first surface being provided with a first heat exchange channel, the two ends of the first heat exchange channel being connected to the first outlet and the first inlet respectively.

[0006] Optionally, the first surface is further provided with a sealing ring groove, the sealing ring groove is annular, and the first heat exchange channel is provided in the area enclosed by the sealing ring groove.

[0007] Optionally, the first heat exchange channel includes a main channel and a check structure; the two ends of the main channel are connected to the first outlet and the first inlet, respectively; the check structure is connected into the main channel, and the check structure allows the fluid to flow unidirectionally in the first heat exchange channel from the first inlet to the first outlet.

[0008] Optionally, the check valve is a Tesla valve.

[0009] Optionally, the first heat exchange channel includes multiple check structures connected in series in the main channel.

[0010] Optionally, the inner surface of the first heat exchange channel is at least partially roughened; and / or, a hydrophilic layer is provided on the inner surface of the first heat exchange channel.

[0011] Optionally, there are multiple first heat exchange channels, and the two ends of each first heat exchange channel are connected to a first outlet and a first inlet, respectively.

[0012] Optionally, the first surface is further provided with a confluence channel, which is located between the first heat exchange channel and the first outlet. One end of the confluence channel is connected to the first outlet, and a plurality of confluence ports are provided on one side of the confluence channel. The plurality of confluence ports are respectively connected to the ends of the plurality of first heat exchange channels away from the first inlet.

[0013] Optionally, the first surface is further provided with a flow distribution channel, which is located between the first heat exchange channel and the first inlet. One end of the flow distribution channel is connected to the first inlet, and a plurality of flow distribution ports are provided on one side of the flow distribution channel. The plurality of flow distribution ports are respectively connected to the ends of the plurality of first heat exchange channels away from the first outlet.

[0014] Optionally, the evaporator further includes a liquid outlet pipe, one end of which is connected to the outer surface of the housing, and a first outlet is connected to the liquid outlet pipe; and / or, the evaporator further includes a liquid inlet pipe, one end of which is connected to the outer surface of the housing, and a first inlet is connected to the liquid inlet pipe.

[0015] Optionally, the housing is provided with a plurality of through holes, which are spaced apart along the edge of the housing; one end of the through hole penetrates the first surface, and the other end of the through hole penetrates the side of the housing opposite to the first surface.

[0016] According to a second aspect of this application, a heat dissipation device is provided, the heat dissipation device including a heat exchanger, a first tube, a second tube and the aforementioned evaporator; the heat exchanger has a second heat exchange channel; the two ends of the first tube are respectively connected to the heat exchanger and the outer shell, and the first tube connects a first outlet to one end of the second heat exchange channel; the two ends of the second tube are respectively connected to the heat exchanger and the outer shell, and the second tube connects a first inlet to the other end of the second heat exchange channel; wherein, a heat exchange medium is disposed in the first heat exchange channel.

[0017] Optionally, the two ends of the first tube are detachably connected to the heat exchanger and the outer casing, respectively; and / or, the two ends of the second tube are detachably connected to the heat exchanger and the outer casing, respectively.

[0018] Optionally, at least one of the first tube and the second tube is a flexible plastic tube.

[0019] Alternatively, the evaporator is located below the heat exchanger along the direction of gravity.

[0020] Optionally, the heat exchanger includes multiple heat exchange tubes, the internal channel of each heat exchange tube is a second heat exchange flow channel, and the two ends of each heat exchange tube are respectively connected to the end of the first tube away from the evaporator and the end of the second tube away from the evaporator.

[0021] Optionally, the heat exchanger further includes multiple fins, which are spaced apart along the axial direction of the heat exchange tube. The fins are provided with through holes, through which the heat exchange tube passes and is connected to the fins; and / or, the heat exchanger further includes a fan, with the outlet of the fan facing the heat exchange tube.

[0022] Optionally, the heat exchanger further includes a branch pipe disposed between the first pipe and the heat exchange tubes, one end of the branch pipe being connected to the end of the first pipe away from the evaporator, and the sidewall of the branch pipe being connected to multiple heat exchange tubes respectively; and / or, the heat exchanger further includes a collector pipe disposed between the second pipe and the heat exchange tubes, one end of the collector pipe being connected to the end of the second pipe away from the evaporator, and the sidewall of the collector pipe being connected to multiple heat exchange tubes respectively.

[0023] Optionally, the heat exchanger also has a third heat exchange channel configured to be connected to the circuit of the vehicle's air conditioning system and to exchange heat between the fluid from the vehicle's air conditioning system and the fluid in the second heat exchange channel.

[0024] Optionally, a hydrophobic layer is provided on the inner surface of the second heat exchange channel; and / or, the heat exchange medium is a phase change medium with a boiling point of 25℃ to 80℃.

[0025] According to a third aspect of this application, an electronic device is provided, the electronic device including a heat-generating device and the aforementioned heat dissipation device and / or the aforementioned heat dissipation device, wherein a first surface is sealed to the heat-generating device.

[0026] According to a fourth aspect of this application, a vehicle is provided that includes the aforementioned electronic equipment.

[0027] In the evaporator of this embodiment, a first heat exchange channel is formed on the surface of the outer shell, making the portion of the evaporator used to form the first heat exchange channel an open structure. This allows the heat exchange medium within the first heat exchange channel to directly contact the heat dissipation surface of the heating element, shortening the heat conduction path between the evaporator and the heating element and reducing the thermal resistance between the heat exchange medium and the heating element. This allows the heat exchange medium within the first heat exchange channel to directly absorb heat from the heating element. Thus, the heat dissipation efficiency of the evaporator can be improved, which in turn helps to improve the heat dissipation efficiency of electronic devices.

[0028] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0031] Figure 1 This is a schematic diagram of the structure of the evaporator provided in an exemplary embodiment of this disclosure;

[0032] Figure 2 This is a side view of the evaporator provided in an exemplary embodiment of this disclosure;

[0033] Figure 3 yes Figure 2 Sectional view of AA;

[0034] Figure 4 This is a schematic diagram of the structure of the inner wall of the first heat exchange channel provided in an exemplary embodiment of this disclosure;

[0035] Figure 5 This is a schematic diagram of the structure of the heat dissipation device provided in an exemplary embodiment of this disclosure;

[0036] Figure 6 This is a schematic diagram of the heat dissipation device and the heat-generating device provided in the exemplary embodiments of this disclosure.

[0037] Figure 7 This is a schematic diagram of another heat dissipation device provided in an exemplary embodiment of this disclosure;

[0038] Figure 8 This is a schematic diagram of the structure of another heat dissipation device provided in an exemplary embodiment of this disclosure;

[0039] Figure 9 This is a schematic diagram of the structure of the inner wall of the second heat exchange channel provided in an exemplary embodiment of this disclosure;

[0040] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an exemplary embodiment of this disclosure.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100 - Evaporator;

[0043] 11-Outer shell; 111-First surface; 112-First outlet; 113-First inlet; 114-First heat exchange channel; 1141-Main flow channel; 1142-Check valve structure;

[0044] 115 - Sealing ring groove; 116 - Manifold channel; 117 - Manifold port; 118 - Diverting channel; 119 - Diverting port; 120 - Through hole;

[0045] 13-Hydrophilic layer; 14-Outlet pipe; 15-Inlet pipe;

[0046] 200 - Heat dissipation device; 21 - First tube; 22 - Second tube; 23 - Heat exchanger; 231 - Second heat exchange channel; 232 - Heat exchange tube; 233 - Fin; 234 - Third heat exchange channel; 235 - Fan; 236 - Diverter tube; 237 - Manifold; 238 - Hydrophobic layer;

[0047] 24 - Heat exchange medium; 25 - Insulation layer;

[0048] 300 - Electronic equipment; 31 - Heat-generating devices;

[0049] 400 - Car air conditioning. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0051] The following combination Figures 1 to 10 The present application provides a detailed description of an evaporator 100, a heat dissipation device 200, an electronic device 300, and a vehicle, as provided in the embodiments of the present application.

[0052] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the evaporator 100 provided in an exemplary embodiment of this disclosure. Figure 2 This is a side view of the evaporator 100 provided in an exemplary embodiment of this disclosure. Figure 3 yes Figure 2 A cross-sectional view of AA. In a first aspect, embodiments of this application provide an evaporator 100. The evaporator 100 includes a housing 11. The housing 11 has a first surface 111, a first outlet 112, and a first inlet 113. The first surface 111 is provided with a first heat exchange channel 114. The two ends of the first heat exchange channel 114 are respectively connected to the first outlet 112 and the first inlet 113.

[0053] It is understood that the first heat exchange channel 114 is used to fill the heat exchange medium 24, which may specifically be a phase change material.

[0054] It is understood that the first surface 111 of the outer casing 11 has an opening structure, and the first heat exchange channel 114 forms the opening. The first surface 111 is configured to contact the heating element 31 and is configured to be sealed to the heating element 31, so that the first heat exchange channel 114 is connected to the external loop at both ends, and the rest of the part is in a circumferentially closed channel.

[0055] The heat-generating device 31 refers to an electronic component that generates heat during the operation of the electronic device due to factors such as current flow and resistance loss. The heat-generating device 31 includes, but is not limited to, power devices. For example, the heat-generating device 31 can be a field-effect transistor, a power amplifier, a power module, an integrated circuit chip, and a transformer.

[0056] Specifically, a sealant can be applied between the first surface 111 and the heating element 31 to achieve a sealed connection between them. Alternatively, a sealing ring can be applied between the first surface 111 and the heating element 31 to achieve a sealed connection. Furthermore, if the components in contact with the heating element 31 and the first surface 111, as well as the housing 11, are all metal, the housing 11 can be welded to the heating element 31 to achieve a sealed connection between them.

[0057] In this embodiment, by providing a first heat exchange channel 114 on the surface of the outer casing 11, the portion of the evaporator 100 used to form the first heat exchange channel 114 is an open structure. This allows the heat exchange medium 24 within the first heat exchange channel 114 to directly contact the heat dissipation surface of the heating device 31, thereby shortening the heat conduction path between the evaporator 100 and the heating device 31 and reducing the thermal resistance between the heat exchange medium 24 and the heating device 31. This allows the heat exchange medium 24 within the first heat exchange channel 114 to directly absorb heat from the heating device 31. This improves the heat dissipation efficiency of the evaporator 100, which in turn improves the heat dissipation efficiency of the electronic device 300.

[0058] In addition, by providing the first heat exchange channel 114 on the surface of the outer shell 11, the shell wall used to seal the first heat exchange channel 114 can be removed to reduce the size of the evaporator 100, which is beneficial for the lightweight design of the electronic device 300 and can reduce the size of the electronic device 300.

[0059] Furthermore, by providing a first heat exchange channel 114 on the surface of the outer shell 11, the cross-sectional area of ​​the first heat exchange channel 114 can be increased without changing the external dimensions of the evaporator 100, thereby increasing the flow rate of the first heat exchange channel 114 and thus improving the heat dissipation efficiency of the evaporator 100.

[0060] Please see Figure 1 In some embodiments, the first surface 111 is further provided with a sealing ring groove 115, the sealing ring groove 115 is annular, and the first heat exchange channel 114 is provided in the area enclosed by the sealing ring groove 115.

[0061] It is understandable that the sealing ring groove 115 is used to install the sealing ring.

[0062] It is understood that when the evaporator 100 is thermally coupled to the heating element 31, a sealing ring is provided between the evaporator 100 and the heating element 31. One side of the sealing ring is inserted into the sealing ring groove 115, and the other side abuts against the heating element 31. The sealing ring is under axial compression, thereby achieving a sealing fit between the evaporator 100 and the heating element 31. In addition, the outer shell 11 can be fixedly connected to the heating element 31 by glue, bolts, or clips, so that the sealing ring is in a stable compressed state to ensure the sealing performance between the evaporator 100 and the heating element 31.

[0063] In this embodiment, by providing a sealing ring groove 115, the sealing connection between the evaporator 100 and the heating element 31 can be achieved through the sealing ring, thereby improving the reliability of the seal between them.

[0064] Please see Figure 1 or Figure 3 In some embodiments, the first heat exchange channel 114 includes a main flow channel 1141 and a check valve structure 1142. The two ends of the main flow channel 1141 are connected to a first outlet 112 and a first inlet 113, respectively. The check valve structure 1142 is connected into the main flow channel 1141. The check valve structure 1142 allows fluid to flow unidirectionally in the first heat exchange channel 114 from the first inlet 113 to the first outlet 112.

[0065] It is understandable that the check structure 1142 can be a check valve, such as a one-way valve, a Tesla valve, or a diaphragm.

[0066] In this embodiment, by providing a check valve 1142, backflow of fluid in the first heat exchange channel 114 can be prevented, thus ensuring a definite flow direction of the fluid in the first heat exchange channel 114. This helps to maintain stable pressure in the channel and allows for the separation of steam and liquid. Steam can move upward more easily along the first pipe 21, while the condensed liquid can flow downward more easily along the second pipe 22. This ensures smooth heat dissipation and guarantees efficient heat dissipation.

[0067] Please see Figure 1 or Figure 3 In some embodiments, the check structure 1142 is a Tesla valve.

[0068] A Tesla valve is a unidirectional fluid flow structure with no moving parts. Depending on the relative dispersion of the fluid, its two ends are a constricted end (where the fluid converges) and an expanded end (where the fluid expands). When the fluid flows in the forward direction (from the expanded end to the constricted end), it is in a converging state, and the contact area between the fluid and the flow channel decreases with the flow direction, thus increasing the fluid velocity and decreasing the fluid pressure. In this way, the fluid can flow unimpeded from one end to the other. Conversely, when the fluid flows in the reverse direction (from the expanded end to the constricted end), part of the fluid flows directly forward, while another part flows upward or downward, and then, guided by the sidewall of the flow channel, flows back and merges with the previous part. This backflow creates a blocking effect, increasing pressure and decreasing velocity, thereby hindering the reverse flow of fluid. This achieves unidirectional flow.

[0069] In this embodiment, by setting the check structure 1142 as a Tesla valve, on the one hand, unidirectional fluid flow can be achieved without input energy; on the other hand, without moving parts such as valve cores, the possibility of wear on the check structure 1142 during operation can be reduced, thereby helping to extend the service life of the evaporator 100.

[0070] Please see Figure 1 or Figure 3 In some embodiments, the first heat exchange channel 114 includes multiple check valves 1142 connected in series in the main channel 1141. This increases the resistance to reverse fluid flow through multiple Tesla valves, making the unidirectional conduction performance of the check valves 1142 more reliable and stable.

[0071] In some embodiments, the inner surface of the first heat exchange channel 114 is at least partially roughened. This allows the roughened inner surface of the first heat exchange channel 114 to have more microscopic protrusions and depressions. These microstructures can promote bubble formation. The generation and detachment of bubbles from the inner surface enhance liquid turbulence, making heat transfer between the liquid and the heating surface more efficient, thereby improving heat exchange efficiency. On the other hand, the roughened surface increases the area of ​​the inner surface of the first heat exchange channel 114. An increased heat exchange area facilitates heat transfer, allowing more liquid to contact the heating surface, thereby absorbing more heat, accelerating evaporation, and improving heat exchange efficiency.

[0072] For example, the roughness Ra of the rough surface is: 0.95μm≤Ra≤2.75μm. This facilitates bubble formation while avoiding excessive roughness that would lead to high flow resistance.

[0073] Please see Figure 4 , Figure 4This is a schematic diagram of the structure of the inner wall of the first heat exchange channel 114 provided in an exemplary embodiment of this disclosure. In some embodiments, a hydrophilic layer 13 is provided on the inner surface of the first heat exchange channel 114.

[0074] It is understandable that the hydrophilic layer 13 helps the liquid wet the dry area at the bottom of the bubble after the bubble is generated, making it easier for the bubble to detach from the wall, thereby enhancing the turbulence of the liquid and making the heat transfer between the liquid and the heated surface more complete.

[0075] Please see Figure 1 or Figure 3 In some embodiments, there are multiple first heat exchange channels 114. Each first heat exchange channel 114 is connected at both ends to a first outlet 112 and a first inlet 113, respectively, ensuring that the forward flow direction of each first heat exchange channel 114 points from the branch channel 118 to the confluence channel 116. Thus, on the one hand, multiple first heat exchange channels 114 allow for a wider distribution of the heat exchange medium 24, which is beneficial for increasing the heat dissipation area and heat dissipation uniformity; on the other hand, it can balance pressure fluctuations, improve the stability of fluid flow within each first heat exchange channel 114, and help increase the fluid flow velocity.

[0076] Please see Figure 1 or Figure 3 In some embodiments, the first surface 111 is further provided with a confluence channel 116, which is disposed between the first heat exchange channel 114 and the first outlet 112. One end of the confluence channel 116 is connected to the first outlet 112. A plurality of confluence ports 117 are provided on one side of the confluence channel 116. The plurality of confluence ports 117 are respectively connected to the ends of the plurality of first heat exchange channels 114 away from the first inlet 113. In this way, on the one hand, the connection structure between the first heat exchange channel 114 and the first outlet 112 is simple and easy to manufacture; on the other hand, the fluid in each first heat exchange channel 114 first flows into the confluence channel 116 to mix and buffer in the confluence channel 116 before flowing out through the first outlet 112, thereby reducing the impact on other pipes when the fluid in the first heat exchange channel 114 flows directly out of the first outlet 112.

[0077] Please see Figure 1 or Figure 3In some embodiments, the first surface 111 is further provided with a flow-diverting channel 118, which is disposed between the first heat exchange channel 114 and the first inlet 113. One end of the flow-diverting channel 118 is connected to the first inlet 113, and a plurality of flow-diverting ports 119 are provided on one side of the flow-diverting channel 118. The plurality of flow-diverting ports 119 are respectively connected to the ends of the plurality of first heat exchange channels 114 away from the first outlet 112. In this way, on the one hand, the connection structure between the first heat exchange channel 114 and the first inlet 113 is simple and easy to manufacture; on the other hand, the uniformity of the fluid flowing from the first inlet 113 into each first heat exchange channel 114 is improved, which is beneficial to improving the heat dissipation uniformity of the evaporator 100.

[0078] Please see Figure 3 In some embodiments, the evaporator 100 further includes a liquid outlet pipe 14, one end of which is connected to the outer surface of the housing 11, and the first outlet 112 is connected to the liquid outlet pipe 14. In this way, the external pipe is connected to the first heat exchange channel 114 through the liquid outlet pipe 14, thereby improving the ease of operation of connecting the external pipe to the evaporator.

[0079] Specifically, the liquid outlet pipe 14 is welded to the outer casing 11.

[0080] Please see Figure 3 In some embodiments, the evaporator 100 further includes a liquid inlet pipe 15, one end of which is connected to the outer surface of the housing 11, and the first inlet 113 is connected to the liquid inlet pipe 15. In this way, the external pipe is connected to the first heat exchange channel 114 through the liquid inlet pipe 15, thereby improving the ease of operation of connecting the external pipe to the evaporator 100.

[0081] Specifically, the liquid inlet pipe 15 is welded to the outer casing 11.

[0082] Please see Figure 1 In some embodiments, the outer casing 11 is provided with a plurality of through holes 120, which are spaced apart along the edge of the outer casing 11. One end of the through hole 120 penetrates the first surface 111, and the other end of the through hole 120 penetrates the side of the outer casing 11 opposite to the first surface 111. In this way, the evaporator 100 and the heating element 31 can be detachably connected by bolts, which improves the ease of fixing the evaporator 100 and the convenience of subsequent maintenance.

[0083] Specifically, the end of the bolt shank passes through the through hole 120 and is threaded into the heating element 31.

[0084] Specifically, the first surface 111 is a plane. The axis of the through hole 120 is perpendicular to the first surface 111.

[0085] It is understandable that the size and position of the via 120 are designed to be consistent with the size and position of the mounting hole of the heating element 31.

[0086] Please see Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of the heat dissipation device 200 provided in an exemplary embodiment of this disclosure. Figure 6 This is a schematic diagram of the heat dissipation device 200 and the heat-generating device 31 provided in an exemplary embodiment of this disclosure. In a second aspect, embodiments of this application provide a heat dissipation device 200. The heat dissipation device 200 includes a heat exchanger 23, a first tube 21, a second tube 22, and an evaporator 100 provided in some embodiments of this application. The heat exchanger 23 has a second heat exchange channel 231. The two ends of the first tube 21 are respectively connected to the heat exchanger 23 and the outer casing 11. The first tube 21 connects a first outlet 112 to one end of the second heat exchange channel 231. The two ends of the second tube 22 are respectively connected to the heat exchanger 23 and the outer casing 11. The second tube 22 connects a first inlet 113 to the other end of the second heat exchange channel 231. A heat exchange medium 24 is disposed in the first heat exchange channel 114.

[0087] For example, the heat exchanger 23 can be a condenser or a liquid cooling plate, etc.

[0088] Specifically, insulation is required around the pipes to ensure that the steam entering the heat exchanger 23 has a certain degree of superheat, thereby improving the efficiency of heat exchange medium 24 condensing and releasing heat within the heat exchanger 23. For example, an insulation layer 25 can be installed on the first pipe 21. In addition, to ensure that the temperature of the heat exchange medium 24 entering the evaporator 100 is sufficiently low and unaffected by the temperature of surrounding components, an insulation layer 25 can be installed on the second pipe 22 to isolate the influence of the external ambient temperature on the heat exchange medium 24 within the second pipe 22.

[0089] It is understood that the heat dissipation device 200 includes the evaporator 100 described above, and the heat dissipation device 200 has all the beneficial effects of the protection subject of the evaporator 100 described above, which will not be repeated here.

[0090] In some embodiments, the two ends of the first tube 21 are detachably connected to the heat exchanger 23 and the outer casing 11, respectively. This improves both the ease of assembly of the heat dissipation device 200 and the convenience of subsequent maintenance.

[0091] Specifically, the two ends of the first tube 21 can be connected to the heat exchanger 23 and the outer shell 11 using quick-connect fittings, pagoda fittings, or other connecting fittings to ensure the sealing of the flow channel of the heat dissipation device 200.

[0092] In some embodiments, the two ends of the second tube 22 are detachably connected to the heat exchanger 23 and the outer casing 11, respectively. This improves both the ease of assembly of the heat dissipation device 200 and the convenience of subsequent maintenance.

[0093] Specifically, the two ends of the second tube 22 can be connected to the heat exchanger 23 and the outer casing 11 using quick-connect fittings, pagoda fittings, or other connecting fittings to ensure the sealing of the flow channel of the heat dissipation device 200.

[0094] In some embodiments, at least one of the first tube 21 and the second tube 22 is a flexible plastic tube. This allows the deformability of the flexible plastic tube to compensate for errors in the generation and assembly, thereby reducing the assembly difficulty of the heat dissipation device 200.

[0095] Please see Figure 6 In some embodiments, the evaporator 100 is located below the heat exchanger 23 along the direction of gravity. In this way, in addition to driving the flow of the heat exchange medium 24 by the evaporation pressure difference, gravity can also be used as the driving force for the flow of the heat exchange medium 24, thereby enhancing the ability of the heat dissipation device 200 to drive the heat exchange medium 24 and facilitating long-distance heat transfer.

[0096] Please see Figure 5 In some embodiments, the heat exchanger 23 includes a plurality of heat exchange tubes 232. The internal channel of each heat exchange tube 232 is a second heat exchange flow channel 231. The two ends of each heat exchange tube 232 are respectively connected to the end of the first tube 21 away from the evaporator 100 and the end of the second tube 22 away from the evaporator 100. In this way, on the one hand, the heat exchange medium 24 can be more widely distributed through multiple heat exchange tubes 232, which is conducive to increasing the heat dissipation area and heat dissipation uniformity; on the other hand, pressure fluctuations can be balanced, improving the stability of fluid flow in each heat exchange tube 232, which is conducive to increasing fluid flow velocity.

[0097] It is understood that the two ends of the second heat exchange channel 231 are connected to the internal channels of the first tube 21 and the internal channels of the second tube 22, respectively.

[0098] Please see Figure 5 In some embodiments, the heat exchanger 23 further includes a plurality of fins 233. The fins 233 are spaced apart along the axial direction of the heat exchange tube 232. Through holes are provided on the fins 233, and the heat exchange tube 232 passes through these through holes and connects to the fins 233. This increases the contact area between the heat exchange tube 232 and the air, thereby increasing the heat dissipation area of ​​the heat exchanger 23 and improving its heat exchange efficiency.

[0099] Please see Figure 7 , Figure 7This is a schematic diagram of another heat dissipation device 200 provided in an exemplary embodiment of this disclosure. In some embodiments, the heat exchanger 23 further includes a fan 235. The air outlet of the fan 235 faces the heat exchange tube 232. In this way, the fan 235 can blow air onto the fins 233 of the heat exchanger 23, increasing the airflow speed so that the air can carry away the heat from the fins 233 and the heat exchange tube 232 more quickly, thereby improving the air-side heat exchange capacity of the heat exchanger 23, increasing the heat exchange efficiency of the heat exchanger 23, and also reducing the size of the heat exchanger 23.

[0100] For example, fan 235 is axial flow fan 235.

[0101] Please see Figure 5 In some embodiments, the heat exchanger 23 further includes a diversion pipe 236. The diversion pipe 236 is disposed between the first pipe 21 and the heat exchange pipe 232. One end of the diversion pipe 236 is connected to the end of the first pipe 21 away from the evaporator 100. The sidewalls of the diversion pipe 236 are respectively connected to a plurality of heat exchange pipes 232. In this way, on the one hand, the connection structure between the diversion pipe 236 and the first pipe 21 is simple and easy to manufacture; on the other hand, the uniformity of the fluid flowing from the first pipe 21 into each diversion pipe 236 is improved, thereby improving the heat dissipation uniformity of the heat exchanger 23.

[0102] Please see Figure 5 The heat exchanger 23 also includes a manifold 237. The manifold 237 is disposed between the second tube 22 and the heat exchange tube 232. One end of the manifold 237 is connected to the end of the second tube 22 away from the evaporator 100. The sidewalls of the manifold 237 are connected to multiple heat exchange tubes 232 respectively. In this way, on the one hand, the connection structure between the manifold 237 and the first tube 21 is simple and easy to manufacture; on the other hand, the fluid in each heat exchange tube 232 first flows into the manifold 237 to mix and buffer before flowing into the second tube 22, thereby reducing the impact on the second tube 22 when the fluid in the heat exchange tube 232 flows directly out of the heat exchange tube 232.

[0103] Please see Figure 8 , Figure 8 This is a schematic diagram of another heat dissipation device 200 provided in an exemplary embodiment of this disclosure. In some embodiments, the heat exchanger 23 further includes a third heat exchange channel 234. The third heat exchange channel 234 is configured to connect to the circuit of the automotive air conditioning 400 to exchange heat between the fluid from the automotive air conditioning 400 and the fluid in the second heat exchange channel 231. Thus, when the heat dissipation device 200 is applied to an automobile, the temperature of the heat exchange medium 24 within the heat dissipation device 200 can be adjusted by the automotive air conditioning 400 to improve the condensation efficiency of the heat exchange medium and simplify the structure of the heat dissipation device 200.

[0104] Please see Figure 9 , Figure 9 This is a schematic diagram of the structure of the inner wall of the second heat exchange channel 231 provided in an exemplary embodiment of this disclosure. In some embodiments, a hydrophobic layer 238 is provided on the inner surface of the second heat exchange channel 231.

[0105] It is understandable that the inner wall temperature of the second heat exchange channel 231 is relatively low, and steam will condense into droplets upon encountering the cold. The hydrophobic layer 238 can reduce the surface adhesion of droplets on the inner wall of the pipe, making it difficult for condensed droplets to form a continuous liquid film on the inner wall of the second heat exchange channel 231. In this way, the thermal resistance of the heat exchanger 23 can be reduced, and the heat transfer efficiency of the heat exchanger 23 can be improved. This, in turn, can improve the heat dissipation efficiency of the heat dissipation device 200.

[0106] In some embodiments, the heat exchange medium 24 is a phase change medium with a boiling point of 25°C to 80°C.

[0107] For example, the heat exchange medium 24 includes, but is not limited to, HFE7000, HFE7100, and FC-72.

[0108] It is understandable that the heat exchange medium 24 has a low boiling point. Choosing a heat exchange medium 24 with a low boiling point allows it to undergo a boiling phase change at a relatively low temperature. This phase change improves the heat absorption efficiency, enabling faster absorption of the heat generated by the power module. This helps ensure that the heating device 31 operates at a relatively low temperature. Furthermore, the stability of the phase change temperature of the heat exchange medium also ensures that the temperature of the heating device 31 is relatively uniform in the liquid flow direction, thereby reducing thermal stress within the heating device 31.

[0109] Please see Figure 10 , Figure 10 This is a schematic diagram of the structure of the electronic device 300 provided in an exemplary embodiment of this disclosure. In a third aspect, embodiments of this application provide an electronic device 300. The electronic device 300 includes a heat-generating device 31 and the aforementioned heat dissipation device 200. The first surface 111 is sealed to the heat-generating device 31.

[0110] It is understood that the electronic device 300 includes the aforementioned heat dissipation device 200, and the electronic device 300 has all the beneficial effects of the aforementioned heat dissipation device 200, which will not be repeated here.

[0111] Fourthly, embodiments of this application provide a vehicle that includes the aforementioned electronic device 300 or the aforementioned heat dissipation device 200.

[0112] In other embodiments, the vehicle includes the aforementioned electronic equipment 300 and cooling device 200.

[0113] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0114] It is understood that the vehicle includes the aforementioned electronic device 300 or the aforementioned heat dissipation device 200, and the vehicle has all the beneficial effects of the aforementioned electronic device 300 or the aforementioned heat dissipation device 200, which will not be repeated here.

[0115] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0116] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0117] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0118] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An evaporator (100), characterized in that, Includes a housing (11), the housing (11) having a first surface (111) and a first outlet (112) and a first inlet (113), the first surface (111) being provided with a first heat exchange channel (114), the two ends of the first heat exchange channel (114) being connected to the first outlet (112) and the first inlet (113) respectively.

2. The evaporator (100) according to claim 1, characterized in that, The first surface (111) is also provided with a sealing ring groove (115), the sealing ring groove (115) is annular, and the first heat exchange channel (114) is provided in the area enclosed by the sealing ring groove (115).

3. The evaporator (100) according to claim 1, characterized in that, The first heat exchange channel (114) includes: The main channel (1141) is connected at both ends to the first exit (112) and the first entrance (113), respectively; and, A check valve structure (1142) is connected into the main flow channel (1141), the check valve structure (1142) allowing fluid to flow unidirectionally in the first heat exchange channel (114) from the first inlet (113) to the first outlet (112).

4. The evaporator (100) according to claim 3, characterized in that, The check valve (1142) is a Tesla valve.

5. The evaporator (100) according to claim 4, characterized in that, The first heat exchange channel (114) includes a plurality of check valve structures (1142), which are connected in series in the main flow channel (1141).

6. The evaporator (100) according to any one of claims 1-5, characterized in that, The inner surface of the first heat exchange channel (114) is at least partially roughened; and / or, A hydrophilic layer (13) is provided on the inner surface of the first heat exchange channel (114).

7. The evaporator (100) according to any one of claims 1-5, characterized in that, There are multiple first heat exchange channels (114), and the two ends of each first heat exchange channel (114) are connected to the first outlet (112) and the first inlet (113), respectively.

8. The evaporator (100) according to claim 7, characterized in that, The first surface (111) is also provided with a confluence channel (116), which is located between the first heat exchange channel (114) and the first outlet (112). One end of the confluence channel (116) is connected to the first outlet (112), and a plurality of confluence ports (117) are provided on one side of the confluence channel (116). The plurality of confluence ports (117) are respectively connected to the ends of the plurality of first heat exchange channels (114) away from the first inlet (113).

9. The evaporator (100) according to claim 7, characterized in that, The first surface (111) is also provided with a diversion channel (118), which is located between the first heat exchange channel (114) and the first inlet (113). One end of the diversion channel (118) is connected to the first inlet (113), and a plurality of diversion ports (119) are provided on one side of the diversion channel (118). The plurality of diversion ports (119) are respectively connected to the ends of the plurality of first heat exchange channels (114) away from the first outlet (112).

10. The evaporator (100) according to any one of claims 1-5, characterized in that, The evaporator (100) further includes a liquid outlet pipe (14), one end of which is connected to the outer surface of the outer casing (11), and the first outlet (112) is connected to the liquid outlet pipe (14); and / or, The evaporator (100) also includes a liquid inlet pipe (15), one end of which is connected to the outer surface of the outer shell (11), and the first inlet (113) is connected to the liquid inlet pipe (15).

11. The evaporator (100) according to any one of claims 1-5, characterized in that, The outer shell (11) is provided with a plurality of through holes (120), which are spaced apart along the edge of the outer shell (11). One end of the through hole (120) penetrates the first surface (111), and the other end of the through hole (120) penetrates the side of the outer shell (11) opposite to the first surface (111).

12. A heat dissipation device (200), characterized in that, include: The heat exchanger (23) has a second heat exchange flow channel (231); The evaporator (100) as described in any one of claims 1-11; A first pipe (21) is connected at both ends to the heat exchanger (23) and the outer casing (11), respectively. The first pipe (21) connects the first outlet (112) to one end of the second heat exchange channel (231); and, The second tube (22) is connected at both ends to the heat exchanger (23) and the outer shell (11) respectively. The second tube (22) connects the first inlet (113) to the other end of the second heat exchange channel (231). The first heat exchange channel (114) is provided with a heat exchange medium (24).

13. The heat dissipation device (200) according to claim 12, characterized in that, The two ends of the first tube (21) are detachably connected to the heat exchanger (23) and the outer casing (11), respectively; and / or, The two ends of the second tube (22) are detachably connected to the heat exchanger (23) and the outer shell (11), respectively.

14. The heat dissipation device (200) according to claim 12, characterized in that, At least one of the first tube (21) and the second tube (22) is a soft plastic tube.

15. The heat dissipation device (200) according to claim 12, characterized in that, Along the direction of gravity, the evaporator (100) is located below the heat exchanger (23).

16. The heat dissipation device (200) according to any one of claims 12-15, characterized in that, The heat exchanger (23) includes a plurality of heat exchange tubes (232), the internal channel of each heat exchange tube (232) is the second heat exchange flow channel (231), and the two ends of each heat exchange tube (232) are respectively connected to the end of the first tube (21) away from the evaporator (100) and the end of the second tube (22) away from the evaporator (100).

17. The heat dissipation device (200) according to claim 16, characterized in that, The heat exchanger (23) further includes a plurality of fins (233), which are spaced apart along the axial direction of the heat exchange tube (232). Each fin (233) has a through hole, through which the heat exchange tube (232) passes and connects to the fin (233); and / or, The heat exchanger (23) also includes a fan (235), the air outlet of which faces the heat exchange tube (232).

18. The heat dissipation device (200) according to claim 16, characterized in that, The heat exchanger (23) further includes a branch pipe (236) disposed between the first pipe (21) and the heat exchange pipe (232). One end of the branch pipe (236) is connected to the end of the first pipe (21) away from the evaporator (100), and the sidewall of the branch pipe (236) is connected to a plurality of the heat exchange pipes (232); and / or, The heat exchanger (23) further includes a manifold (237), which is disposed between the second tube (22) and the heat exchange tube (232). One end of the manifold (237) is connected to the end of the second tube (22) away from the evaporator (100), and the sidewall of the manifold (237) is connected to a plurality of the heat exchange tubes (232).

19. The heat dissipation device (200) according to any one of claims 12-15, characterized in that, The heat exchanger (23) also has a third heat exchange channel (234) configured to be connected to the circuit of the vehicle air conditioning (400) and to exchange heat between the fluid from the vehicle air conditioning (400) and the fluid in the second heat exchange channel (231).

20. The heat dissipation device (200) according to any one of claims 12-15, characterized in that, The inner surface of the second heat exchange channel (231) is provided with a hydrophobic layer (238); and / or, The heat exchange medium (24) is a phase change medium with a boiling point of 25℃~80℃.

21. An electronic device (300), characterized in that, include: Heating device (31); and, The heat dissipation device (200) as described in any one of claims 12-20; The first surface (111) is sealed to the heating device (31).

22. A vehicle, characterized in that, Includes the electronic device (300) as described in claim 21 and / or the heat dissipation device (200) as described in any one of claims 12-20.

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