Thermosyphon heat sink

Abstract

The present application relates to a thermosyphon heat sink. The thermosyphon heat sink comprises a first heat exchange portion and a second heat exchange portion; the first heat exchange portion comprises a header portion and a plurality of heat exchange tubes, the header portion comprises a first header, and the wall thickness of the first header is T; the second heat exchange portion comprises a first wall, and at least part of the first wall can be in contact with a heat source; the first heat exchange portion and the second heat exchange portion are connected; a thermosyphon heat dissipation device comprises a pressure relief portion; the pressure relief portion comprises a second wall, the thickness of at least part of the second wall is t1, and t1 < T; a first cavity is in communication with the interior of the first heat exchange portion or the interior of the second heat exchange portion. By providing the pressure relief portion on the thermosyphon heat sink, the first cavity is in fluid communication with the interior of the first heat exchange portion and / or the interior of the second heat exchange portion, so as to reduce the risk of the thermosyphon heat sink bursting, thereby improving the safety performance of the thermosyphon heat sink, and taking into account the heat exchange performance of the thermosyphon heat sink.

Description

A thermosiphon radiator

[0001] This application claims priority to Chinese Patent Application No. 202423320787.8, filed with the China National Intellectual Property Administration on December 31, 2024, entitled “A Thermosiphon Radiator”, the entire contents of which are incorporated herein by reference.

[0002] This application claims priority to Chinese Patent Application No. 202511480439.3, filed on October 15, 2025, entitled "A Thermosiphon Radiator", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of heat dissipation technology for electronic components, specifically to a thermosiphon heat sink. Background Technology

[0004] With technological advancements, the power and integration of electronic components in industries such as photovoltaics, wind power, and energy storage are increasing, leading to greater heat flux densities. This necessitates rapid heat exchange through heat exchange devices to provide a stable operating environment for these electronic components. Thermosiphon cooling systems utilize the phase change of the working medium to transfer heat. However, in certain situations, such as component malfunctions, heat generation can increase dramatically. After absorbing heat, a large amount of the liquid working medium inside the thermosiphon transforms into a gaseous state, causing an imbalance between the liquid and gas phases. This increase in gaseous working medium leads to increased internal pressure, posing a risk of explosion. Therefore, balancing the safety and heat exchange performance of thermosiphon cooling systems while minimizing losses has become a critical technical issue for those skilled in the art. Summary of the Invention

[0005] In view of this, this application provides a thermosiphon radiator that is advantageous in balancing the safety performance, loss reduction, and heat exchange performance of the thermosiphon radiator.

[0006] This application provides a thermosiphon radiator, which includes a first heat exchange section and a second heat exchange section. The first heat exchange section and the second heat exchange section are directly connected or indirectly connected. The first heat exchange section includes a manifold section and a plurality of heat exchange tubes. The manifold section includes a first manifold, which includes a pipe wall arranged circumferentially along the first manifold, and the thickness of the pipe wall is T. The plurality of heat exchange tubes are arranged in the thickness direction of the heat exchange tube. The second heat exchange section includes a first wall, at least a portion of which can contact a heat source. The first heat exchange section and the second heat exchange section are directly connected or indirectly connected. At least one of the first heat exchange section and the second heat exchange section includes a pressure relief section, which includes a second wall. The pressure relief section also has a first cavity, and the wall surrounding the first cavity includes the second wall. At least a portion of the second wall has a thickness of t1, and t1 < T. The internal volume of the pressure relief section is smaller than the internal volume of the first manifold. The first cavity communicates with the interior of the first heat exchange section, or the first cavity communicates with the interior of the second heat exchange section.

[0007] According to this application, a thermosiphon heat dissipation device is proposed, which includes a pressure relief section and a first manifold. The internal volume of the pressure relief section is smaller than that of the first manifold, and the wall thickness of the first manifold is T. The pressure relief section has a second wall, at least a portion of which has a thickness of t1, and t1 < T. When the internal pressure of the thermosiphon radiator exceeds a preset pressure bearing range, the pressure relief section can rupture before the first manifold, thereby reducing the risk of rupture of the first manifold in the first heat exchange section, thus reducing the risk of a large amount of refrigerant leakage, so as to improve the safety performance and reliability of the thermosiphon radiator, while also meeting the heat exchange performance requirements of the thermosiphon radiator.

[0008] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0009] Figure 1 is a schematic diagram of a thermosiphon radiator provided in an embodiment of this application;

[0010] Figure 2 is a schematic diagram of the pressure relief section in the thermosiphon radiator shown in Figure 1;

[0011] Figure 3 is a cross-sectional view of Figure 2 along the AA direction;

[0012] Figure 4 is a schematic diagram of the first manifold provided in an embodiment of this application;

[0013] Figure 5 is a schematic diagram of yet another embodiment of the pressure relief section provided in this application;

[0014] Figure 6 is a schematic diagram of another thermosiphon radiator provided in an embodiment of this application;

[0015] Figure 7 is a schematic diagram of another embodiment of the pressure relief section provided in the present application;

[0016] Figure 8 is a cross-sectional view of Figure 7 along the GG direction;

[0017] Figure 9 is a schematic diagram of yet another embodiment of the first manifold provided in the embodiments of this application;

[0018] Figure 10 is a schematic diagram of another thermosiphon radiator provided in the embodiment of this application;

[0019] Figure 11 is a schematic diagram of another embodiment of the pressure relief section provided in this application;

[0020] Figure 12 is a cross-sectional view of Figure 11 along the HH direction;

[0021] Figure 13 is a schematic diagram of another embodiment of the first manifold provided in the embodiments of this application;

[0022] Figure 14 is a schematic diagram of another thermosiphon radiator provided in the embodiments of this application;

[0023] Figure 15 is a schematic diagram of yet another embodiment of the pressure relief section provided in this application;

[0024] Figure 16 is a cross-sectional view of Figure 15 along direction II;

[0025] Figure 17 is a schematic diagram of yet another embodiment of the first manifold provided in the present application;

[0026] Figure 18 is a schematic diagram of yet another thermosiphon radiator provided in the embodiments of this application;

[0027] Figure 19 is a schematic diagram of yet another embodiment of the pressure relief section provided in this application;

[0028] Figure 20 is a cross-sectional view of Figure 19 along the JJ direction;

[0029] Figure 21 is a schematic diagram of yet another embodiment of the first manifold provided in the present application;

[0030] Figure 22 is a schematic diagram of yet another thermosiphon radiator provided in the embodiments of this application;

[0031] Figure 23 is a cross-sectional view of Figure 22 along the BB direction;

[0032] Figure 24 is a schematic diagram of yet another embodiment of the pressure relief section provided in this application;

[0033] Figure 25 is a broken view of Figure 24 along the CC direction;

[0034] Figure 26 is a schematic diagram of yet another embodiment of the first manifold provided in the embodiments of this application;

[0035] Figure 27 is a schematic diagram of yet another thermosiphon radiator provided in the embodiments of this application;

[0036] Figure 28 is a cross-sectional view of Figure 27 along the DD direction;

[0037] Figure 29 is a magnified view of position I in Figure 28;

[0038] Figure 30 is a schematic diagram of yet another embodiment of the first manifold provided in the present application;

[0039] Figure 31 is a schematic diagram of yet another thermosiphon radiator provided in the embodiments of this application;

[0040] Figure 32 is a schematic diagram of yet another embodiment of the pressure relief section provided in this application;

[0041] Figure 33 is a cross-sectional view of the pressure relief section provided in an embodiment of this application;

[0042] Figure 34 is a cross-sectional view of Figure 31 along the LL direction;

[0043] Figure 35 is a magnified view of position III in Figure 34;

[0044] Figure 36 is a schematic diagram of yet another embodiment of the first manifold provided in this application;

[0045] Figure 37 is a schematic diagram of yet another embodiment of the pressure relief section provided in the present application.

[0046] Reference numerals: 100-Thermosiphon radiator; 1-First heat exchange section; 11-Heat exchange tube; 111-First flow channel; 112-First partition section; 12-Manifold section; 121-First manifold; 2-Second heat exchange section; 21-First wall; 22-Third wall; 23-Fourth wall; 24-Fifth wall; 241-First mounting hole; 25-Sixth wall; 26-Seventh wall; 3-Pressure relief section; 31-Second wall; 311-First sub-wall; 312-Second sub-wall; 32-First cavity; 33-Edge; 34-Mounting section; 35-Second flow channel; 36-Second partition section; 4-First pipeline; 5-Second pipeline; 6-First fitting; 61-First connecting section; 611-First through hole; 62-Second connecting section; 621 - Second through hole; 63 - Third connecting pipe section; 632 - Third through hole. Detailed Implementation

[0047] To more clearly illustrate the technical solution of this application, the embodiments of this application will be briefly described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application and are intended to explain this application, and should not be construed as limiting this application.

[0048] Thermosiphon radiators are used in industries such as photovoltaics, wind power, and energy storage for heat dissipation of electronic components. With technological advancements, the power of inverters used in photovoltaics, wind power, and energy storage is constantly increasing, as are the power and integration levels of electronic components, leading to greater heat generation during operation. Thermosiphon radiators, with their advantages of good anti-clogging performance and relatively simple structure, are widely used in heat dissipation applications for electronic components. However, during operation, when electronic components generate significant heat, such as in the event of a malfunction, the temperature can increase dramatically, far exceeding normal operating temperatures. In this situation, the liquid working medium inside the thermosiphon radiator 100 absorbs heat, causing a large amount of liquid working medium to convert to a gaseous state. When the amount of gaseous working medium increases significantly, the gas-liquid balance within the thermosiphon radiator 100 is disrupted. This increased internal pressure leads technicians to discover a risk of bursting in the first heat exchange section 1, reducing the safety of using the thermosiphon radiator.

[0049] The thermosiphon radiator 100 provided in this application embodiment has a pressure relief section 3 provided in the first heat exchange section 1 or the second heat exchange section 2, which can relieve pressure when the internal pressure of the thermosiphon radiator 100 is high, thereby reducing the internal pressure of the thermosiphon radiator 100, reducing the risk of the thermosiphon radiator 100 bursting, and thus improving the safety performance of the thermosiphon radiator 100.

[0050] In some embodiments, as shown in FIG1, the thermosiphon radiator 100 includes at least one first pipe 4 and at least one second pipe 5. One end of the first pipe 4 is directly or indirectly connected to the first heat exchange section 1, and the other end of the first pipe 4 is directly or indirectly connected to the second heat exchange section 2. One end of the second pipe 5 is directly or indirectly connected to the first heat exchange section 1, and the other end of the second pipe 5 is directly or indirectly connected to the second heat exchange section 2. The working medium can flow between the first heat exchange section 1 and the second heat exchange section 2 through the first pipe 4 and the second pipe 5. At least one of the first heat exchange section 1, the second heat exchange section 2, the first pipe 4, and the second pipe 5 includes a pressure relief section 3. The pressure relief section 3 includes a second wall 31 and has a first cavity 32. The wall surrounding the first cavity 32 includes the second wall 31. The first cavity 32 communicates with at least one of the interior of the first heat exchange section 1, the interior of the second heat exchange section 2, the flow channel of the first pipe 4, and the flow channel of the second pipe 5.

[0051] By connecting the first heat exchange section 1 and the second heat exchange section 2 with the first pipe 4 and the second pipe 5, the relative positions of the first heat exchange section 1 and the second heat exchange section 2 can be made more flexible, allowing the thermosiphon radiator 100 to adapt to different application scenarios. The first heat exchange section 1 and the second heat exchange section 2 can be set in different positions as needed and connected by pipes. This method facilitates the optimization of the structure of the thermosiphon radiator 100, allowing the structure of the thermosiphon radiator 100 to meet usage requirements by adjusting the relative positions between the first heat exchange section 1 and the second heat exchange section 2.

[0052] The thermosiphon radiator 100 includes a first heat exchange section 1 and a second heat exchange section 2. The first heat exchange section 1 includes a manifold section 12 and a plurality of heat exchange tubes 11. The manifold section 12 includes two first manifolds 121, and the plurality of heat exchange tubes 11 are spaced apart in the thickness direction of the heat exchange tubes 11. The heat exchange tubes 11 have a first flow channel 111, and the heat exchange tubes 11 connect the two first manifolds 121. The second heat exchange section 2 has a first wall 21, at least a portion of which can contact a heat source (not shown in the figure). It is understood that the heat source can be an electronic component. A pressure relief section 3 is fixedly connected to the first manifolds 121 and also has a first cavity 32. The wall surrounding the first cavity 32 includes a second wall 31, and the first cavity 32 communicates with the interior of the first heat exchange section 1.

[0053] The first manifold 121 is used to collect and distribute the working medium flowing into and out of the first heat exchange section 1. The working medium flows into the first heat exchange section 1 from one end of the heat exchange tube 11 through the first manifold 121, which distributes the working medium to ensure its flow into the heat exchange tube 11. The working medium flows out from the other end of the heat exchange tube 11 and enters the first manifold 121 on that side, which collects the working medium flowing out of the heat exchange tube 11. The first heat exchange section 1 can function as a condenser, allowing the gaseous working medium to exchange heat while flowing between the heat exchange tubes 11, releasing heat to change the working medium from a gaseous state to a liquid state.

[0054] In some embodiments, at least a portion of the second wall 31 has a wall thickness less than the wall thickness of the first manifold 121.

[0055] The first heat exchange section 1 can be a condenser, and the second heat exchange section 2 can be an evaporator. During operation, the liquid working medium in the second heat exchange section 2 absorbs heat from the heat source. After absorbing heat, the working medium changes from a liquid to a gaseous state. The gaseous working medium flows into the condenser, thus carrying away heat from the heat source. The gaseous working medium releases heat in the condenser, changing from a gaseous state to a liquid state. The liquid working medium flows to the evaporator, thus enabling the working medium to circulate within the thermosiphon radiator 100.

[0056] In some embodiments, the pressure relief section 3 shown in Figures 2 and 3 is a schematic diagram of a pressure relief section 3 structure that can be applied to the thermosiphon radiator shown in Figure 1. The pressure relief section 3 includes a second wall 31, at least a portion of which has a thickness of t1. The wall thickness of the first manifold 121 is T, and t1 < T. The internal volume of the pressure relief section 3 is smaller than the internal volume of the first manifold 121. Specifically, the second wall 31 includes a first sub-wall 311 and a second sub-wall 312, one end of which is fixedly connected to the first manifold 121. The other end of the second sub-wall 312 is connected to the first sub-wall 311. Figure 3 is a schematic cross-sectional view of the pressure relief section 3 shown in Figure 2 in the AA direction. The wall thickness of the first sub-wall 311 is t1, and the wall thickness of the second sub-wall 312 is t2, where t2 > t1. In addition, Figure 4 is a schematic structural diagram of the first manifold 121 in the radiator shown in Figure 1. The first manifold 121 includes a pipe wall arranged circumferentially along the first manifold 121. The wall thickness of the pipe wall is T, and t1 < T. The internal volume of the pressure relief section 3 is smaller than the internal volume of the first manifold 121. Technicians discovered that when the internal pressure of the thermosiphon radiator 100 exceeds a preset pressure, the first manifold 121 is at risk of rupture. Therefore, to reduce the risk of rupture of the first manifold 121, which carries the liquid working medium, technicians added a pressure relief section 3 to the first heat exchange section 1. The first manifold 121 and the pressure relief section 3 are connected. Moreover, since the wall thickness of at least part of the pressure relief section 3 is less than the wall thickness of the first manifold 121, when the internal pressure of the first heat exchange section 1 is too high and there is a risk of rupture, at least part of the pressure relief section 3 can rupture before the first manifold 121. This allows the interior of the thermosiphon radiator 100 to communicate with the outside through the rupture of the pressure relief section 3, thereby discharging the gaseous working medium and reducing the internal pressure of the thermosiphon radiator 100. This reduces the risk of the first manifold 121 in the first heat exchange section 1 bursting, further improving the safety and reliability of the thermosiphon radiator 100 while also taking into account the heat exchange performance of the thermosiphon radiator.

[0057] In some embodiments, the wall thickness t1 of the first sub-wall 311, the wall thickness t2 of the second sub-wall 312, and the wall thickness T of the first manifold 121 satisfy the following relationship: t1 < t2 < T.

[0058] Furthermore, placing the pressure relief section 3 on the first manifold 121, which is not on the same side as the heat source, also helps to reduce the damage of the liquid refrigerant to the heat source.

[0059] The pressure relief section 3 is directly or indirectly connected to the manifold section 12, as shown in Figure 5. The pressure relief section 3 can be fixedly connected to the first manifold 121 via the mounting base 34, which helps to improve the installation reliability of the pressure relief section 3.

[0060] In some embodiments, as shown in FIG6, the thermosiphon radiator 100 includes a first heat exchange section 1 and a second heat exchange section 2. The first heat exchange section 1 includes a manifold section 12 and a plurality of heat exchange pipes 11. The manifold section 12 includes two first manifolds 121. One end of the heat exchange pipe 11 is connected to one of the first manifolds 121, and the other end of the heat exchange pipe 11 is connected to the other first manifold 121. The second heat exchange section 2 includes a first wall 21 that can be used to install a heat source (not shown in the figure). The second heat exchange section 2 also includes a third wall 22 and a fourth wall 23 in the height direction of the second heat exchange section 2. The third wall 22 is closer to the first heat exchange section 1 than the fourth wall 23. A pressure relief section 3 can be provided on the third wall 22 of the second heat exchange section 2, or it can be provided on the fourth wall 23.

[0061] Specifically, as shown in Figures 7 and 8, the pressure relief section 3 includes a second wall 31, which encloses and forms a first cavity 32. At least a portion of the thickness of the second wall 31 is t1, and t1 < T. The internal volume of the pressure relief section 3 is smaller than the internal volume of the first manifold 121. Specifically, the second wall 31 of the pressure relief section 3 includes a first sub-wall 311 and a second sub-wall 312. The wall thickness of the first sub-wall 311 is t1, and the wall thickness of the second sub-wall 312 is t2, where t2 > t1. One end of the second sub-wall 312 is directly or indirectly connected to one end of the third wall 22, and the other end of the second sub-wall 312 is connected to the first sub-wall 311.

[0062] Furthermore, as shown in Figure 9, the first manifold 121 includes a pipe wall arranged along the circumferential direction of the first manifold 121, and the wall thickness of the first manifold 121 is T, and T > t1.

[0063] The interior of the pressure relief section 3 is connected to the interior of the second heat exchange section 2. Its placement avoids the first wall 21, which is in contact with the heat source, thereby reducing the possibility of the pressure relief section 3 interfering with the contact between the second heat exchange section 2 and the heat source. When the pressure relief section 3 releases pressure, it discharges the working medium of the thermosiphon radiator 100. Placing the pressure relief section 3 on the third wall 22 and the fourth wall 23 reduces the contact between the working medium and the heat source during discharge, thus minimizing damage to the heat source from the liquid refrigerant.

[0064] Furthermore, since the wall thickness of part of the pressure relief section 3 is less than that of the first manifold 121, when the pressure inside the first heat exchange section 1 is too high and there is a risk of rupture, at least part of the pressure relief section 3 can crack before the first manifold 121, so that the interior of the thermosiphon radiator 100 can be connected to the outside through the crack in the pressure relief section 3, thereby discharging the gaseous working medium, reducing the pressure inside the thermosiphon radiator 100, thereby reducing the risk of the first manifold 121 in the first heat exchange section 1 bursting, further improving the safety and reliability of the thermosiphon radiator 100, and taking into account the heat exchange performance of the thermosiphon radiator.

[0065] In some embodiments, as shown in FIG10, the first heat exchange section 1 and the second heat exchange section 2 can be directly connected. The first heat exchange section 1 includes a plurality of heat exchange tubes 11 and a manifold section 12. One end of the heat exchange tube 11 is connected to the manifold section 12, and the other end of the heat exchange tube 11 is connected to the second heat exchange section 2. Specifically, the first heat exchange section 1 and the second heat exchange section 2 can be connected by plugging, welding, or other methods. This design can shorten the distance between the first heat exchange section 1 and the second heat exchange section 2, thereby improving the circulation efficiency of the working medium in the thermosiphon radiator 100 and thus improving the heat exchange efficiency of the thermosiphon radiator 100. The direct connection between the first heat exchange section 1 and the second heat exchange section 2 eliminates the need for connecting components, which helps to reduce the volume of the thermosiphon radiator 100. A pressure relief section 3 is disposed on the manifold section 12 and communicates with the manifold section 12. The manifold section 12 has a pipe wall arranged in the circumferential direction of the manifold section, and the thickness of the pipe wall is T. The pressure relief section 3 includes a second wall 31, and at least a portion of the thickness of the second wall 31 is less than the thickness of the pipe wall of the manifold section 12. The manifold section 12 may be a first manifold 121.

[0066] Further, as shown in Figures 11 to 13, the pressure relief section 3 includes a second wall 31, and the pressure relief section 3 also includes a first cavity 32 formed by the second wall 31. The second wall 31 includes a first sub-wall 311 and a second sub-wall 312. One end of the second sub-wall 312 is directly or indirectly connected to the manifold section 12, and the other end of the second sub-wall 312 is directly or indirectly connected to the first sub-wall. The wall thickness of the first sub-wall 311 is t1, and the wall thickness of the second sub-wall is t2, where t1 < t2. The manifold section 12 includes a first manifold 121, and the first manifold 121 includes a pipe wall along the circumferential direction of the first manifold 121. The wall thickness of the pipe wall is T, where t1 < T. The pressure relief section 3... The internal volume is smaller than that of the first manifold 121. Since the wall thickness of part of the pressure relief section 3 is smaller than that of the first manifold 121, when the pressure inside the first heat exchange section 1 is too high and there is a risk of rupture, at least part of the pressure relief section 3 can rupture before the first manifold 121, so that the interior of the thermosiphon radiator 100 can be connected to the outside through the rupture of the pressure relief section 3, thereby discharging the gaseous working medium, reducing the internal pressure of the thermosiphon radiator 100, thereby reducing the risk of the first manifold 121 in the first heat exchange section 1 bursting, further improving the safety and reliability of the thermosiphon radiator 100, and taking into account the heat exchange performance of the thermosiphon radiator.

[0067] By integrating the pressure relief section 3 into the first manifold 121, the space occupied by the pressure relief section 3 can be reduced, which in turn helps to reduce the overall volume of the thermosiphon radiator 100.

[0068] Since the second heat exchange section 2 needs to be in contact with the heat source, while the first heat exchange section 1 does not need to be in contact with the heat source, the space of the first heat exchange section 1 is relatively sufficient, making it more convenient to install the pressure relief section 3.

[0069] In some embodiments, as shown in FIG14, the second heat exchange section 2 further includes a first wall 21 (not shown in FIG14 due to perspective) and a fifth wall 24, the first wall 21 and the fifth wall 24 being located on opposite sides of the second heat exchange section 2 along the thickness direction of the second heat exchange section 2. The pressure relief section 3 may be directly or indirectly connected to the first wall 21, and the pressure relief section 3 may also be directly or indirectly connected to the fifth wall 24.

[0070] Specifically, the second heat exchange section 2 has multiple channels inside. The first wall 21 and the fifth wall 24 are located on opposite sides of the second heat exchange section 2 along the thickness direction of the second heat exchange section 2. The third wall 22 and the fourth wall 23 are located on opposite sides of the second heat exchange section 2 along the height direction of the second heat exchange section 2. The second heat exchange section 2 also includes a sixth wall 25 and a seventh wall 26, which are located on opposite sides of the second heat exchange section 2 along the length direction of the second heat exchange section 2. The first wall 21 and the fifth wall 24 have relatively large areas. The first wall 21 is in contact with the heat source (not shown in the figure), and the fifth wall 24 is located on the side of the first wall 21 away from the heat source.

[0071] The first wall 21 and the fifth wall 24 have relatively large areas, so there is enough space to facilitate the installation of the pressure relief section 3.

[0072] Furthermore, the thermosiphon radiator 100 includes a first pipe 6, and a fifth wall 24 has a first mounting hole 241 that penetrates the fifth wall 24. The first pipe 6 is directly or indirectly connected to the fifth wall 24. The first pipe 6 includes a first through hole 611, a second through hole 621, and a third through hole 631. The working medium can flow into the first pipe 6 through the first through hole 611. The second through hole 621 communicates with the first mounting hole 241, and the third through hole 631 communicates with the first cavity 32. The first through hole 611, the second through hole 621, and the third through hole 631 are interconnected.

[0073] The second through hole 621 communicates with the first mounting hole 241, allowing the interior of the first pipe 6 to communicate with the second heat exchange section 2. The working medium can flow into the first pipe 6 through the first through hole 611 and then into the second heat exchange section 2 through the second through hole 621 and the first mounting hole 241. Simultaneously, the heat exchange medium can also flow out through the first mounting hole 241 and the second through hole 621, enter the first pipe 6, and flow into the first cavity 32 of the pressure relief section 3 along the third through hole 631.

[0074] Working medium can be added to the second heat exchange section 2 through the first through hole 611 of the first pipe 6, thereby actively adjusting the overall working state of the thermosiphon radiator 100 and changing the amount of working medium in the thermosiphon radiator 100 according to actual usage requirements. When the internal pressure of the thermosiphon radiator 100 exceeds the preset pressure range, due to the large internal pressure, the working medium can flow into the pressure relief section 3 along the first mounting hole 241, the second through hole 621, and the third through hole 631, and then be discharged through the pressure relief section 3, automatically adjusting the pressure of the thermosiphon radiator 100. This design integrates the manual adjustment structure and the automatic adjustment structure into the first pipe 6, thereby improving the integration level of the thermosiphon radiator 100 and reducing its size. The connection between the first pipe 6 and the fifth wall 24 allows the first pipe 6 to be located on the side of the second heat exchange section 2 away from the heat source, thereby reducing the possibility of interference between the first pipe 6 and the heat source and better meeting actual usage requirements.

[0075] Specifically, the first pipe fitting 6 includes a first connecting section 61, a second connecting section 62, and a third connecting section 63. A first through hole 611 is provided in the first connecting section 61, and a second through hole 621 is provided in the second connecting section 62. The second connecting section 62 is directly or indirectly connected to the fifth wall 24. A third through hole 631 is provided in the third connecting section 63, and the third connecting section 63 is connected to the pressure relief part 3.

[0076] The structure of the first pipe fitting 6 can be approximately "Y" shaped, and there can be an angle between the first pipe section 61 and the third pipe section 63. The first pipe section 61 and the third pipe section 63 can extend in different directions. In some embodiments, the distance between the first pipe section 61 and the third pipe section 63 gradually increases in the direction away from the second pipe section 62.

[0077] This design helps to reduce the possibility of interference between the first connecting section 61 and the third connecting section 63.

[0078] The fifth wall 24 has a large area and is located on the side of the second heat exchange section 2 away from the heat source. Therefore, the fifth wall 24 has sufficient space to accommodate the pressure relief section 3, and it can also keep the pressure relief section 3 away from the heat source, thereby reducing the possibility that the working medium will come into contact with the heat source and affect the heat source when the pressure relief section 3 discharges the working medium.

[0079] As shown in Figures 15 to 17, the pressure relief section 3 includes a second wall 31 and a first cavity 32 formed by the second wall 31. The second wall 31 includes a first sub-wall 311 and a second sub-wall 312. One end of the second sub-wall 312 is directly or indirectly connected to the manifold section 12, and the other end of the second sub-wall 312 is directly or indirectly connected to the first sub-wall. The wall thickness of the first sub-wall 311 is t1, and the wall thickness of the second sub-wall is t2, where t1 < t2. The manifold section 12 includes a first manifold 121, which includes a pipe wall along the circumferential direction of the first manifold 121. The wall thickness of the pipe wall is T, where t1 < T. The contents of the pressure relief section 3 are as follows. Since the wall thickness of the pressure relief section 3 is less than that of the first manifold 121, when the pressure inside the first heat exchange section 1 is too high and there is a risk of rupture, at least a portion of the pressure relief section 3 can rupture before the first manifold 121, so that the interior of the thermosiphon radiator 100 can be connected to the outside through the rupture of the pressure relief section 3, thereby discharging the gaseous working medium, reducing the pressure inside the thermosiphon radiator 100, thereby reducing the risk of the first manifold 121 in the first heat exchange section 1 bursting, further improving the safety and reliability of the thermosiphon radiator 100, and taking into account the heat exchange performance of the thermosiphon radiator.

[0080] In some embodiments, as shown in FIG18, the thermosiphon radiator 100 includes a first heat exchange section 1 and a second heat exchange section 2, which are connected by a first pipe 4 and a second pipe 5. Specifically, the first heat exchange section 1 includes a heat exchange pipe 11 and a manifold section 12. The manifold section 12 includes two first manifolds 121. One end of the heat exchange pipe 11 is connected to one of the first manifolds 121, and the other end of the heat exchange pipe 11 is connected to the other first manifold 121. The heat exchange pipe 11 is connected to the manifold section 12. The first manifold 121 has a pipe wall arranged along the circumferential direction of the first manifold. The second heat exchange section 2 includes a third wall 22 and a fourth wall 23 arranged opposite to each other along the height direction of the second heat exchange section 2. The second heat exchange section 2 also includes a first wall 21 (not shown in FIG18 due to viewing angle) and a fifth wall 24 arranged along the thickness direction of the second heat exchange section 2.

[0081] Furthermore, the thermosiphon radiator 100 also includes a first pipe 4 and a second pipe 5. One end of the first pipe 4 is connected to the first heat exchange section 1, and the other end of the first pipe 4 is connected to the second heat exchange section 2. One end of the second pipe 5 is connected to the first heat exchange section 1, and the other end of the second pipe 5 is connected to the second heat exchange section 2. Specifically, when the thermosiphon radiator 100 is in operation, the heat source (not shown in the figure) generates heat, causing the liquid refrigerant inside the second heat exchange section 2 to absorb heat and vaporize. Then, the gaseous refrigerant flows through the second pipe 5 to the first heat exchange section 1, and then gradually becomes liquid refrigerant after dissipating heat and condensing in the first heat exchange section 1, flowing through the first pipe 4 to the second heat exchange section 2. It should be noted that, in order to clearly show the connection relationship between the first pipe 4 and the second pipe 5, part of the structure of the heat exchange tube 11 is omitted in the figure, and only part of the heat exchange tube 11 is shown at both ends in the length direction (z direction in the figure) of the first heat exchange section 1.

[0082] The second heat exchange section 2 includes a first wall 21 (not shown in the figure) and a fifth wall 24 that are arranged opposite to each other in the thickness direction (y direction in the figure). The heat source (not shown in the figure) is in contact with part of the first wall 21. The pressure relief section 3 is directly or indirectly connected to the fifth wall 24. It should be noted that the pressure relief section 3 can be directly fixedly connected to the fifth wall 24, or it can be fixedly connected to the fifth wall 24 through other components. The pressure relief section 3 is in communication with the interior of the second heat exchange section 2.

[0083] Specifically, as shown in Figures 19 and 20, the pressure relief part 3 includes a second wall 31, which encloses a first cavity 32. The second wall 31 includes a first sub-wall 311 and a second sub-wall 312. One end of the second sub-wall 312 can be directly or indirectly connected to the fifth wall 24, and the other end of the second sub-wall 312 is directly or indirectly connected to the first sub-wall 311. The wall thickness of the first sub-wall 311 is t1, the wall thickness of the second sub-wall 312 is t2, and t2 > t1.

[0084] Specifically, as shown in Figure 21, the first manifold 121 includes a pipe wall arranged along the circumferential direction of the first manifold 121, with a wall thickness of T, and t1 being less than T. Therefore, in this design, when the pressure inside the first heat exchange section 1 is too high and there is a risk of rupture, at least a portion of the pressure relief section 3 can rupture before the first manifold 121, so that the interior of the thermosiphon radiator 100 can communicate with the outside through the rupture of the pressure relief section 3, thereby discharging the gaseous working medium, reducing the pressure inside the thermosiphon radiator 100, and thus reducing the risk of the first manifold 121 in the first heat exchange section 1 bursting, further improving the safety and reliability of the thermosiphon radiator 100, while also taking into account the heat exchange performance of the thermosiphon radiator. Moreover, setting the pressure relief section 3 to be fixedly connected to the fifth wall 24 also helps to reduce the damage of the liquid refrigerant to the heat source.

[0085] In some embodiments, the pressure resistance of the pressure relief section 3 is less than that of the first heat exchange section 1, or the pressure resistance of the pressure relief section 3 is less than that of the second heat exchange section 2, or the pressure resistance of the pressure relief section 3 is less than that of the first pipeline 4 or the second pipeline 5.

[0086] In some embodiments, as shown in Figures 22 and 23, the pressure relief section 3 is integrated with the first manifold 121. The pressure relief section 3 is disposed on at least one side of the first manifold 121, and the pressure relief section 3 can also be used to seal the cavity of the first manifold 121.

[0087] Specifically, the pressure relief section 3 includes a first sub-wall 311 and a second sub-wall 312. The second sub-wall 312 is arranged outside the first sub-wall 311. The second sub-wall 312 is directly or indirectly in contact with the wall of the first manifold 121. The wall thickness of the first sub-wall 311 is t1, and the wall thickness of the second sub-wall 312 is t2, where t1 < t2.

[0088] Furthermore, in some embodiments, the second sub-wall 312 can be arranged circumferentially along the first sub-wall 311, that is, the second sub-wall 312 can be annular and sleeved on the outside of the first sub-wall 311. As shown in Figures 24 and 25, the pressure relief part 3 includes a cover and an edge 33, the edge 33 being arranged circumferentially along the cover. The cover includes the first sub-wall 311 and the second sub-wall 312, and the cover can serve as the second wall 31. The first sub-wall 311 is located inside the second sub-wall 312. It can be understood that the first sub-wall 311 can also be arranged outside the second sub-wall 312. The thickness of the first sub-wall 311 is t1, the thickness of the second sub-wall 312 is t2, and the thickness of the first sub-wall 311 is less than the thickness of the second sub-wall 312.

[0089] This design saves space occupied by the pressure relief section 3, thereby reducing the possibility of interference between the pressure relief section 3 and other components of the thermosiphon radiator 100. During installation, the pressure relief section 3 can be installed on the thermosiphon radiator 100 by installing the cavity seal for sealing the first manifold 121, eliminating the need for separate installation of the pressure relief section 3 and thus improving installation efficiency.

[0090] Specifically, as shown in Figure 26, the first manifold 121 includes a pipe wall arranged along the circumferential direction of the first manifold 121, the wall thickness of which is T, and t1 < T.

[0091] By reducing the pressure resistance of the pressure relief section 3, when the pressure relief section 3 is used to seal the cavity of the first manifold 121, if the internal pressure of the thermosiphon radiator 100 is too high, at least part of the pipe wall of the pressure relief section 3 can rupture before the first manifold 121. The pressure relief section 3 can reduce the possibility of damage to the thermosiphon radiator 100 during use and can also reduce material costs.

[0092] In some embodiments, the wall thickness of the first sub-wall 311 is 0.3 mm < t1 < 0.7 mm. The wall thickness of the second sub-wall 312 is 1.3 mm < t2 < 1.7 mm.

[0093] The wall thickness of the first sub-wall 311 can be 0.30 mm, 0.35 mm, 0.40 mm, 0.45 mm, 0.50 mm, 0.55 mm, 0.60 mm, 0.65 mm, 0.70 mm, etc. The wall thickness of the second sub-wall 312 can be 1.3 mm, 1.35 mm, 1.40 mm, 1.45 mm, 1.50 mm, 1.55 mm, 1.60 mm, 1.65 mm, 1.70 mm, etc. When the first heat exchange section 1 and the second heat exchange section 2 are connected through the first pipe 4 and the second pipe 5, the wall thickness of the first sub-wall 311 is less than the wall thickness of the first pipe 4 and the wall thickness of the second pipe 5. The wall thickness of the pipe refers to the thickness of the pipe wall, as shown in Figure 22.

[0094] In some embodiments, as shown in Figures 22 to 26, the pressure relief part 3 is located near the end of the manifold part 12. The pressure relief part 3 is directly or indirectly connected to the first manifold 121. The pressure relief part 3 is used to seal the cavity of the first manifold 121.

[0095] This design allows the pressure relief section 3 to be directly integrated into the first heat exchange section 1, thereby reducing the space occupied by the pressure relief section 3 and thus helping to reduce the volume of the thermosiphon radiator 100. Integrating the pressure relief section 3 with the first manifold 121 in the manifold section 12 also reduces the possibility of interference between the pressure relief section 3 and other parts.

[0096] In some embodiments, as shown in Figures 27 to 29, the thermosiphon radiator 100 includes a first heat exchange section 1 and a second heat exchange section 2. The first heat exchange section 1 includes a manifold section 12 and a plurality of heat exchange tubes 11. The manifold section 12 includes two first manifolds 121. Along the extension direction of the heat exchange tubes 11, the two first manifolds 121 are located on opposite sides of the heat exchange tubes 11, and the heat exchange tubes 11 are connected to the two first manifolds 121.

[0097] The thermosiphon radiator also includes a pressure relief section 3, which is disposed on the outer side relative to the heat exchange tube 11. The pressure relief section 3 includes a second wall 31, which includes two first sub-walls 311 and two second sub-walls 312. The two first sub-walls 311 are arranged opposite each other in the thickness direction of the heat exchange tube 11, and the two second sub-walls 312 are arranged opposite each other in the length direction of the heat exchange tube 11. The thickness direction of the heat exchange tube 11 is parallel to the length direction of the second heat exchange section 2. One end of one first sub-wall 311 is connected to one end of one second sub-wall 312, and the other end of one second sub-wall 312 is connected to one end of the other second sub-wall 312. One end of another first sub-wall 311 is connected to one end of one second sub-wall 312, and the other end of the other second sub-wall 312 is connected to one end of the other second sub-wall 312. At least a portion of the first sub-walls 311 have a wall thickness of t1, and at least a portion of the second sub-walls 312 have a wall thickness of t2, where t1 < t2.

[0098] The pressure relief section 3 has a plurality of second flow channels 35. The pressure relief section 3 includes a plurality of second partitions 36, each second partition 36 being spaced apart in the width direction of the pressure relief section 3. In the width direction of the pressure relief section 3, a second partition 36 is provided between two adjacent first flow channels 111. The heat exchange tube 11 includes a plurality of first flow channels 111, and the heat exchange tube 11 also includes a plurality of first partitions 112, the plurality of first partitions 112 being spaced apart in the width direction of the heat exchange tube 11, and a first partition 112 being provided between two adjacent first flow channels 111 in the width direction of the heat exchange tube 11. The sum of the cross-sectional areas of the plurality of second flow channels 35 of the pressure relief section 3 is greater than the sum of the cross-sectional areas of the plurality of first flow channels 111 of the heat exchange tube 11.

[0099] In one possible implementation, the number of second flow channels 35 in the pressure relief section 3 can be the same as or different from the number of first flow channels 111 in each heat exchange tube 11. When the number of second flow channels 35 is equal to or less than the number of first flow channels 111 in each heat exchange tube 11, the cross-sectional area of ​​each second flow channel 35 can be greater than the cross-sectional area of ​​each first flow channel 111, so that the sum of the cross-sectional areas of the second flow channels 35 is greater than the sum of the cross-sectional areas of the first flow channels 111 in the same heat exchange tube 11. When the number of second flow channels 35 in the pressure relief section 3 is greater than the number of first flow channels 111 in each heat exchange tube 11, the cross-sectional area of ​​the second flow channels 35 can be greater than or less than the cross-sectional area of ​​the first flow channels 111, as long as the sum of the cross-sectional areas of the second flow channels 35 in the pressure relief section 3 is greater than the sum of the cross-sectional areas of the first flow channels 111 in the same heat exchange tube 11.

[0100] Specifically, as shown in Figure 30, the first manifold 121 includes a pipe wall arranged along the circumferential direction of the first manifold 121, and the wall thickness of the pipe wall is T, where t1 < T.

[0101] In this embodiment, when the thermosiphon radiator 100 is working, the pressure relief section 3 can be used as a heat exchange tube 11. By making the wall thickness of the first sub-wall 311 smaller than the wall thickness of the second sub-wall 312, the structural strength of the first sub-wall 311 can be reduced. Since the structural strength of the first sub-wall 311 is low, when the pressure inside the thermosiphon radiator 100 exceeds a preset range and the manifold 12 is at risk of rupture, the pressure relief section 3 can rupture before the manifold 12 in the operating state of the thermosiphon radiator 100. This allows the interior of the thermosiphon radiator 100 to communicate with the outside through the pressure relief section 3, and the working medium inside the thermosiphon radiator 100 can be discharged from the first sub-wall 311. This reduces the pressure inside the thermosiphon radiator 100, reduces the risk of the manifold 12 bursting, improves the safety performance of the thermosiphon radiator 100, and also takes into account the heat exchange performance of the thermosiphon radiator.

[0102] This design allows the structural strength of the first sub-wall 311 to be less than that of other components of the thermosiphon radiator 100. When the internal pressure of the thermosiphon radiator 100 exceeds a preset range, the first sub-wall 311 ruptures to release pressure, thus protecting other components of the thermosiphon radiator 100 and reducing the possibility of damage to them. Furthermore, the number of second flow channels 35 can be increased so that the number of second flow channels 35 in the pressure relief section 3 is greater than the number of first flow channels 111 in the heat exchange tube 11. The cross-sectional area of ​​each second flow channel 35 can be the same as the cross-sectional area of ​​each first flow channel 111. Since the number of second flow channels 35 is greater than the number of first flow channels 111, the sum of the cross-sectional areas of the second flow channels 35 in the pressure relief section 3 is greater than the sum of the cross-sectional areas of the first flow channels 111 in the heat exchange tube 11. This results in the structural strength of the pressure relief section 3 being less than that of the heat exchange tube 11, allowing the pressure relief section 3 to rupture before the heat exchange tube 11 when the pressure in the thermosiphon radiator 100 exceeds a preset range.

[0103] In the solution provided in this application embodiment, by making the sum of the cross-sectional areas of the second flow channels 35 greater than the sum of the cross-sectional areas of the first flow channels 111, the area of ​​the cavity in the pressure relief section 3 can be increased, thereby reducing the structural strength of the pressure relief section 3. When the internal pressure of the thermosiphon radiator 100 exceeds a preset range, the pressure relief section 3 can rupture before the heat exchange tube 11, discharging the working medium, thereby reducing the possibility of damage to other components of the thermosiphon radiator 100.

[0104] In some embodiments, as shown in Figures 31 to 35, the thermosiphon radiator 100 includes a first heat exchange section 1 and a second heat exchange section 2. The thermosiphon radiator 100 also includes a pressure relief section 3. Since the structures of the first heat exchange section 1 and the second heat exchange section 2 of the thermosiphon radiator 100 are similar to those of the thermosiphon radiators shown in Figures 31 and 32, they will not be described again here. The following mainly describes the different features in the two examples. It should be noted that in order to clearly show the connection method of the first pipe 4 and the second pipe 5 in the thermosiphon radiator shown in Figure 31, the heat exchange tubes in the middle area of ​​the first heat exchange section 1 are omitted, and only some heat exchange tubes 11 are shown on both sides of the first manifold 121 in the length direction of the first heat exchange section 1.

[0105] In some embodiments, the pressure relief section 3 may be directly or indirectly connected to the first pipeline 4, and at least part of the wall thickness of the second wall 31 is less than the wall thickness of the first pipeline 4. The pressure relief section 3 may also be directly or indirectly connected to the second pipeline 5. Specifically, as shown in Figures 31 and 33, the pressure relief section 3 includes a second wall 31, and the pressure relief section also includes a first cavity 32 surrounded by the second wall 31. The second wall 31 includes a first sub-wall 311 and a second sub-wall 312. The wall thickness of the first sub-wall 311 is t1, and the wall thickness of the second sub-wall is t2, where t2 > t1.

[0106] Furthermore, as shown in Figure 36, the first manifold 121 includes a pipe wall arranged circumferentially along the first manifold 121, with a wall thickness of T, where t1 < T. Therefore, when the pressure inside the thermosiphon radiator 100 exceeds a preset range, and the manifold 12 is at risk of rupture, the pressure relief section 3 can rupture before the manifold 12 in operation. This allows the interior of the thermosiphon radiator 100 to communicate with the outside through the pressure relief section 3, and the working medium inside the thermosiphon radiator 100 can be discharged from the first sub-wall 311. This reduces the pressure inside the thermosiphon radiator 100, decreases the risk of the manifold 12 bursting, improves the safety performance of the thermosiphon radiator 100, and also takes into account the heat exchange performance of the thermosiphon radiator.

[0107] In some implementations, the minimum wall thickness of the second wall 31 is less than the minimum wall thickness of the second pipe 5. Specifically, as shown in Figures 34 and 35, the wall thickness of the first pipe 4 is t3, where t1 < t2 ≤ t3 < T. This design facilitates the rupture of the pressure relief section 3 when the internal pressure of the thermosiphon radiator 100 exceeds a preset range. Placing the pressure relief section 3 in the first pipe 4 and / or the second pipe 5 can reduce the impact of the rupture of the pressure relief section 3 on the first heat exchange section 1 and the second heat exchange section 2.

[0108] In some embodiments, as shown in FIG37, the pressure relief section 3 may include a mounting section 34, which may be integrally formed with the second sub-wall 312. The mounting section 34 may also be directly or indirectly connected to at least one of the first sub-wall 311 and the second sub-wall 312. During installation, the pressure relief section 3 is connected to any one of the first heat exchange section 1, the second heat exchange section 2, the first pipeline 4, and the second pipeline 5 through the mounting section 34.

[0109] The integral molding of the mounting part 34 and the second sub-wall 312 can reduce the connection structure of the pressure relief part 3, reduce the number of welding points, and improve assembly efficiency.

[0110] In some embodiments, the cross-sectional area of ​​the second flow channel 35 is larger than the cross-sectional area of ​​the first flow channel 111. It should be noted that, since the pressure relief section 3 shown in FIG15 and the pressure relief section 3 shown in FIG12 are structurally similar, the specific internal structure of the pressure relief section 3 may differ.

[0111] The thermosiphon radiator 100 provided in this embodiment can release pressure when the internal pressure of the thermosiphon radiator 100 exceeds a preset range by providing a pressure relief section 3, thereby reducing the risk of bursting of the manifold section 12 in the thermosiphon radiator 100. It can also reduce the impact on other components of the thermosiphon radiator 100, thereby reducing pressure relief costs, and the pressure relief section 3 has minimal impact on other components. When the internal pressure of the thermosiphon radiator 100 exceeds the preset range, the pressure relief section 3 can burst, and the pressure relief process can be carried out automatically without manual control.

[0112] By reasonably adjusting the size of the pressure relief part 3 to reduce the space occupied by the pressure relief part 3, the possibility of interference between the pressure relief part 3 and other components can be reduced.

[0113] It should be noted that the thermosiphon radiator 100 typically includes a large number of heat exchange tubes 11 and fins, which can easily lead to overly dense lines in the accompanying drawings, affecting the clarity of the drawings. In order to ensure the clarity of the drawings provided in this application embodiment, only a portion of the heat exchange tubes 11 and fins in the thermosiphon radiator 100 are shown, and not all of them are shown. The unshown parts can be arranged according to the arrangement pattern of the parts shown in the accompanying drawings.

[0114] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0115] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0116] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0117] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0118] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0119] The above examples illustrate the principles and implementation methods of this application. The descriptions of the embodiments are merely for the purpose of helping to understand the methods and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A thermosiphon radiator, characterized in that, The thermosiphon radiator (100) includes a first heat exchange section (1) and a second heat exchange section (2), which are directly or indirectly connected. The first heat exchange section (1) includes a manifold section (12) and a plurality of heat exchange tubes (11). The manifold section (12) includes a first manifold (121), which includes a pipe wall arranged circumferentially along the first manifold (121) with a thickness of T. The plurality of heat exchange tubes (11) are arranged in the thickness direction of the heat exchange tubes (11). The second heat exchange section (2) includes a main body section (20), which includes a first wall (21), at least a portion of which is a first wall. (21) It can come into contact with a heat source. The first heat exchange part (1) and the second heat exchange part (2) are directly connected or indirectly connected. The thermosiphon radiator (100) includes a pressure relief part (3). The pressure relief part (3) includes a second wall (31). The pressure relief part (3) also has a first cavity (32). The wall surrounding the first cavity (32) includes the second wall (31). At least a portion of the second wall (31) has a wall thickness of t1, and t1 < T. The internal volume of the pressure relief part (3) is smaller than the internal volume of the first manifold (121). The first cavity (32) is connected to the interior of the first heat exchange part (1), or the first cavity (32) is connected to the interior of the second heat exchange part (2).

2. The thermosiphon radiator according to claim 1, characterized in that, The pressure relief section (3) includes a first sub-wall (311) and a second sub-wall (312). The first sub-wall (311) is farther away from the bottom of the main body (20) than the second sub-wall (312). The first sub-wall (311) and the second sub-wall (312) are directly connected or indirectly connected. The second sub-wall (312) is directly connected or indirectly connected to the main body (20). The wall thickness of the first sub-wall (311) is t1, and the wall thickness of the second sub-wall (312) is t2, where t1 < t2.

3. The thermosiphon radiator according to claim 2, characterized in that, The wall thickness t1 of the first sub-wall (311) and the wall thickness of the second sub-wall (312) satisfy the following relationship: 0.3mm < t1 < 0.7mm, 1.3mm < t2 < 1.7mm.

4. The thermosiphon radiator according to claim 2, characterized in that, The wall thickness t1 of the first sub-wall (311), the wall thickness t2 of the second sub-wall (312), and the wall thickness T of the first manifold (121) satisfy the following relationship: t1 < t2 < T.

5. The thermosiphon radiator according to claim 1, characterized in that, The thermosiphon radiator (100) further includes at least one first pipe (4) and at least one second pipe (5). One end of the first pipe (4) is directly or indirectly connected to the first heat exchange part (1), and the other end of the first pipe (4) is directly or indirectly connected to the second heat exchange part (2). One end of the second pipe (5) is directly or indirectly connected to the first heat exchange part (1), and the other end of the second pipe (5) is directly or indirectly connected to the second heat exchange part (2).

6. The thermosiphon radiator according to claim 5, characterized in that, The pressure relief section (3) includes a first sub-wall (311) and a second sub-wall (312). The wall thickness t1 of the first sub-wall (311), the wall thickness t2 of the second sub-wall (312), the wall thickness t3 of the first pipeline (4), and the wall thickness T of the first manifold (121) satisfy the following relationship: t1<t2≤t3<T.

7. The thermosiphon radiator according to any one of claims 1 to 6, characterized in that, The second heat exchange section (2) includes a third wall (22) and a fourth wall (23) in the height direction of the second heat exchange section (2). In the height direction of the second heat exchange section (2), the third wall (22) is disposed closer to the first heat exchange section (1) than the fourth wall (23). The pressure relief section (3) is directly connected to the third wall (22) or indirectly connected to the fourth wall (23).

8. The thermosiphon radiator according to any one of claims 1 to 6, characterized in that, The second heat exchange section (2) further includes a first wall (21) and a fifth wall (24) in the height direction of the second heat exchange section (2). The pressure relief section (3) is directly connected to the first wall (21) or indirectly connected to the fifth wall (24).

9. The thermosiphon radiator according to any one of claims 1 to 6, characterized in that, The pressure resistance of the pressure relief section (3) is less than that of the first heat exchange section (1); or, the pressure resistance of the pressure relief section (3) is less than that of the second heat exchange section (2); or, the pressure resistance of the pressure relief section (3) is less than that of the first pipeline (4) and / or the second pipeline (5).

10. The thermosiphon radiator according to any one of claims 1 to 6, characterized in that, The second heat exchange section (2) further includes a first pipe fitting (6). The second heat exchange section (2) includes a fifth wall (24). The fifth wall (24) has a first mounting hole (241). The first mounting hole (241) penetrates the fifth wall (24). The first pipe fitting (6) is directly or indirectly connected to the fifth wall (24). The first pipe fitting (6) includes a first through hole (611), a second through hole (621), and a third through hole (631). The first through hole (611) can be used to allow the working medium to flow in. The second through hole (621) communicates with the first mounting hole (241). The third through hole (631) communicates with the first cavity (32).

11. The thermosiphon radiator according to claim 10, characterized in that, The first pipe fitting (6) includes a first connecting section (61), a second connecting section (62) and a third connecting section (63). The first connecting section (61) includes the first through hole (611). The second connecting section (62) is directly or indirectly connected to the fifth wall (24). The third connecting section (63) is directly or indirectly connected to the pressure relief part (3).

12. The thermosiphon radiator according to any one of claims 1 to 6, characterized in that, The first heat exchange section (1) includes a manifold section (12), the manifold section (12) includes a first manifold (121), the first manifold (121) is directly or indirectly connected to the heat exchange tube (11), the second heat exchange section (2) is directly or indirectly connected to the first manifold (121), and the pressure relief section (3) is directly or indirectly connected to the first manifold (121).

13. The thermosiphon radiator according to any one of claims 1 to 6, characterized in that, The heat exchange tube (11) has a plurality of first flow channels (111) and a plurality of first partitions (112). The plurality of first partitions (112) are spaced apart in the width direction of the heat exchange tube (11). A first partition (112) is provided between two adjacent first flow channels (111) in the width direction of the heat exchange tube (11). The first heat exchange section (1) includes a pressure relief section (3). The pressure relief section (3) has a plurality of second flow channels (35). The pressure relief section (3) also includes a plurality of second partitions (36). The plurality of second partitions (36) are spaced apart in the width direction of the pressure relief section (3). A second partition (36) is provided between two adjacent second flow channels (35) in the width direction of the pressure relief section (3). The sum of the cross-sectional areas of the plurality of second flow channels (35) of the pressure relief section (3) is greater than the sum of the cross-sectional areas of the plurality of first flow channels (111) of the heat exchange tube (11).

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