Heat dissipation module, heat dissipation device and heat dissipation system

Abstract

The utility model provides a heat dissipation module, a heat dissipation device and a heat dissipation system, the heat dissipation module comprises a plate body and a plurality of fins, the plate body is internally provided with a first cavity, the fins are internally provided with second cavities, the plurality of fins are arranged, the second cavities of the plurality of fins are communicated with the first cavity to form a phase change cooling cavity, and in addition, the second cavities of the plurality of fins are communicated with the first cavity to form a phase change cooling cavity. The phase-change cooling cavity comprises a first cavity and a second cavity, the area, in the second cavity, of the gaseous phase-change working medium converted into the liquid phase-change working medium is a phase-change area, the multiple fins are arranged, and the phase-change areas of the adjacent fins are communicated through communicating pipes. Therefore, the gaseous phase change working medium in the phase change cooling cavity can be concentrated in the fins corresponding to the high-temperature area, the heat dissipation capability of the fins in the heat dissipation module is fully utilized, and the heat dissipation efficiency of the heat dissipation module can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic heat dissipation, and in particular to a heat dissipation module, a heat dissipation device and a heat dissipation system. Background Art

[0002] With the continuous development of electronic technology and communication technology, the power of outdoor communication base stations continues to increase, and the requirements for the heat dissipation efficiency of radiators are getting higher and higher.

[0003] Solid-liquid phase change heat sinks have good constant temperature and large phase change latent heat, which can effectively solve the heat dissipation problem of high-power electronic devices that work in short periods of time and periodically. However, since the liquid phase change medium in the solid-liquid phase change heat sink will rise first after vaporization, the vaporized phase change medium of the existing solid-liquid phase change heat sink is mostly concentrated in the fins corresponding to the high temperature area, which in turn affects the heat dissipation efficiency of the heat sink. Utility Model Content

[0004] In view of this, the utility model is dedicated to providing a heat dissipation module, which connects the phase change zones of adjacent fins by setting a connecting pipe, thereby improving the heat dissipation efficiency of the heat dissipation module. In addition, the utility model also provides a heat dissipation device including the heat dissipation module, and a heat dissipation system including the heat dissipation module.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A heat dissipation module, comprising:

[0007] The plate body is provided with a first cavity;

[0008] A fin is provided with a second cavity, and the fin is provided with a plurality of fins, and the second cavities in the plurality of fins are all connected with the first cavity to form a phase change cooling cavity;

[0009] The region in the second cavity where the gas phase-change medium is transformed into the liquid phase-change medium is the phase-change zone. A plurality of fins are provided, and the phase-change zones of adjacent fins are connected via a connecting pipe.

[0010] Preferably, a plurality of the first cavities are provided, and any of the fins is provided with a plurality of the second cavities, and the plurality of second cavities in the same fin are respectively connected to different first cavities to form a plurality of independent phase change cooling cavities.

[0011] Preferably, it further comprises a phase change tube assembly capable of liquefying the gaseous phase change medium. When the heat dissipation module is in a vertical working state, the phase change tube assembly is connected to a phase change cooling cavity away from the top of the fin.

[0012] Preferably, the phase change tube assembly comprises:

[0013] A phase change main pipe having an inner cavity for containing and liquefying the gaseous phase change working medium;

[0014] A plurality of branch pipes are used to connect the phase change zone and the inner cavity so that the gaseous phase change medium in the phase change zone of the plurality of fins can enter the inner cavity of the phase change main pipe.

[0015] Preferably, it also includes a reflux pipe connected to the phase change main pipe and the phase change cooling chamber, and is used to guide the liquid phase change working medium in the inner cavity to the phase change cooling chamber.

[0016] Preferably, a protective plate is provided on a side of the fin away from the plate body, and the protective plate has a plurality of ventilation holes.

[0017] A heat dissipation device, comprising:

[0018] The heat dissipation frame comprises a frame body with a U-shaped groove structure;

[0019] The heat dissipation module is the heat dissipation module mentioned above, and the heat dissipation module is arranged in the groove cavity of the frame body.

[0020] Preferably, a plurality of heat dissipation plates are arranged in parallel in the groove cavity of the frame body, and the heat dissipation plates are parallel to the fins in the heat dissipation module to form a heat dissipation channel.

[0021] Preferably, when the heat dissipation module includes a protective plate, the protective plate is connected to a side wall of the heat dissipation frame.

[0022] A heat dissipation system, comprising:

[0023] Heating components;

[0024] The heat dissipation module is heat-conductingly connected to the heat-generating component, and the heat dissipation module is the heat dissipation module mentioned above.

[0025] It can be seen from the above technical scheme that the heat dissipation module provided by the utility model, during the heat dissipation process, increases the diffusion channel of the gaseous phase change medium in the phase change cooling cavity due to the addition of a connecting tube to connect the phase change zones of adjacent fins, thereby enabling the gaseous phase change medium in the phase change cooling cavity to be concentrated in the fins corresponding to the high temperature area, thereby making full use of the heat dissipation capacity of the fins in the heat dissipation module, and thereby improving the heat dissipation efficiency of the heat dissipation module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure shows a schematic structural diagram of a heat dissipation module provided in an embodiment of the utility model after the main body in the plate body is removed;

[0027] Figure 2 Shown Figure 1A schematic diagram of the structure of the heat dissipation module in another perspective;

[0028] Figure 3 Shown is a schematic structural diagram of a fin provided in an embodiment of the utility model;

[0029] Figure 4 Shown is a schematic structural diagram of a heat dissipation device provided in an embodiment of the utility model;

[0030] Figure 5 Shown Figure 4 Exploded view of the heat sink in the image.

[0031] exist Figure 1-Figure 5 middle:

[0032] 1-frame, 2-heat sink, 3-protection plate, 4-fin, 5-comb plate, 6-liquid injection pipe, 7-cover plate, 8-body;

[0033] 41- Second cavity. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] First of all, it should be noted that the heat dissipation module in the present invention is suitable for scenarios where heat-generating components need to be cooled. The above-mentioned heat-generating components can be electronic devices (for example: computers, servers and televisions, etc.), power system equipment (transformers, rectifiers and inverters, etc.) and outdoor communication base stations, etc.

[0036] like Figure 1-Figure 3As shown, the heat dissipation module in the embodiment of the utility model includes a plate body and a fin 4, wherein a first cavity is formed inside the plate body, and a second cavity 41 is formed inside the fin 4, and a plurality of fins 4 are provided, and the second cavities 41 in the plurality of fins 4 are all connected with the first cavity to form a phase change cooling cavity; that is, the phase change cooling cavity includes a first cavity and a plurality of second cavities 41, and the plurality of second cavities 41 here are all second cavities 41 in different fins 4. When the heat dissipation module is used to dissipate heat from the heating element, the plate body in the heat dissipation module is connected to the heating component for heat transfer, so that the heat generated by the heating element is transferred to the phase change medium in the first cavity through the plate body, and the phase change medium in the first cavity undergoes phase change after absorbing heat, from liquid to gas, and diffuses into the second cavity 41, and re-condenses in the second cavity 41 to release heat; the condensed phase change medium returns to the first cavity under the action of gravity and the side wall of the second cavity 41 to participate in the next cycle.

[0037] In addition, if Figure 1 and Figure 2 As shown, there are multiple fins 4 in the heat dissipation module, and the phase change zones of adjacent fins 4 are connected by connecting tubes (not shown in the drawings). The above-mentioned phase change zone refers to the area in the second cavity 41 where the gaseous phase change medium is converted into a liquid phase change medium. It should be known that the phase change working fluid has an upward flow tendency after being vaporized, that is, the liquid phase change working fluid at the bottom of the phase change cooling chamber will preferentially diffuse to the top of the corresponding area (that is, the area where the phase change working fluid changes from liquid to gas) after being vaporized. Based on this, when only part of the area of ​​the heat generating element generates heat or part of the area generates a large amount of heat, the phase change working fluid corresponding to the above area in the phase change cooling chamber will preferentially undergo phase change, thereby generating a large amount of gaseous phase change working fluid. In this way, among the multiple fins 4 in the heat dissipation module, there will be a situation where the fins 4 in some local areas have a large amount of gaseous phase change working fluid inside, while there is only a small amount of gaseous phase change working fluid in the fins 4 in other areas. In this embodiment, a connecting pipe is provided to connect the phase change zones of adjacent fins 4, thereby increasing the diffusion channel of the gaseous phase change working fluid, thereby effectively improving the above situation, making full use of the fins 4 in the heat dissipation module, and thereby improving the heat dissipation efficiency of the heat dissipation module.

[0038] Regarding the arrangement of the connecting pipe, an adaptive design can be performed as needed during the specific implementation, and the utility model does not make specific limitations. For example:

[0039] In some embodiments, in the vertical working state of the heat dissipation module (i.e., the working state of the heat dissipation module when the plate body is vertical or inclined at a certain angle), the connecting pipe is connected to the top of the phase change zone of the adjacent fins 4. As described above, the gaseous phase change medium in the phase change zone has an upward trend when the heat dissipation module is in the vertical working state, and then will preferentially diffuse to the top of the phase change zone. Based on this, the use of the connecting pipe to connect the top area of ​​the adjacent fins 4 is more conducive to the diffusion of the gaseous phase change medium in the fins 4 corresponding to the heat rising area to the fins 4 in other areas, further improving the diffusion speed of the phase change medium in the phase change cooling cavity, and further improving the heat dissipation efficiency of the heat dissipation module.

[0040] In other embodiments, in the vertical working state of the heat dissipation module, one end of the connecting pipe between two adjacent fins 4 is connected to the bottom of the phase change zone of one fin 4, and the other end is connected to the top of the phase change zone of the other fin 4. In this way, the gas phase change medium in the fin 4 corresponding to the heat rising area can fully exchange heat with the fin 4 during the process of diffusing to the fins 4 in other areas, thereby improving the heat dissipation efficiency.

[0041] In addition, it should be noted that Figure 4 and Figure 5 As shown, the plate body includes a main body 8 and a cover plate 7, wherein a plurality of grooves are provided on one side of the main body 8, and the cover plate 7 covers the above grooves to form a plurality of first cavities on the plate body. At the same time, a plurality of openings are provided on the cover plate 7 corresponding to each first cavity, so that the first cavity in the plate body can be connected with the second cavity 41 in the fin 4 to form a plurality of phase change cooling cavities.

[0042] Furthermore, in order to further improve the heat dissipation capacity of the heat dissipation module, in some embodiments, laser engraving is performed in the groove of the body 8 (for example, laser engraving forms multiple protrusions in the groove) to increase the contact area between the side wall of the first cavity and the phase change medium, thereby improving the heat dissipation efficiency. In other embodiments, a material with better thermal conductivity, such as graphene, is applied to the surface of the body 8 so that the heat emitted by the heating element can be transferred to the phase change medium more quickly, thereby improving the heat dissipation efficiency of the heat dissipation module.

[0043] In addition, regarding the connection method between the main body 8 and the cover plate 7, in some preferred embodiments, the main body 8 and the cover plate 7 are welded and connected by brazing. To ensure the airtightness of the connection position between the main body 8 and the cover plate 7, and to avoid leakage of the phase change working fluid in the phase change cooling cavity. Of course, in the specific implementation, other connection methods that can achieve a sealed connection, such as adhesive connection, can also be used. Further, in some preferred embodiments, in order to facilitate the connection between the main body 8 and the cover plate 7, a positioning structure is provided between the main body 8 and the cover plate 7 to ensure the relative position of the two during the connection process is accurate, thereby ensuring the airtightness of the phase change cooling cavity of the heat dissipation module after assembly. Exemplarily, in a specific embodiment, the positioning structure is a positioning column and a positioning hole, wherein the positioning column is provided on one of the main body 8 and the cover plate 7, and the positioning hole is provided on the other of the main body 8 and the cover plate 7 (for example, the positioning column is provided on the main body 8, and the positioning hole is provided on the cover plate 7). In another specific embodiment, the positioning structure is a positioning groove, which is arranged on the main body 8, and the shape and size of the positioning groove match the outer contour of the cover plate 7, so that during the assembly process, the cover plate 7 can be placed in the positioning groove, thereby realizing the positioning connection between the main body 8 and the cover plate 7.

[0044] Of course, the above is only an exemplary description of a method of forming a plate body, but the present invention is not limited to this. For example, if processing conditions permit, the plate body can also be set as an integral structural member; or, the plate body can also be composed of a main body 8 and multiple cover plates 7 that can cover different grooves.

[0045] In some embodiments, the first cavity is provided with a plurality of, and any fin 4 is provided with a plurality of second cavities 41 (such as Figure 3 As shown), and the multiple second cavities 41 in the same fin 4 are respectively connected to different first cavities to form multiple independent phase change cooling cavities. In this way, when the heat dissipation module is in use, the areas corresponding to the different first cavities on the plate body are respectively connected to the different heating areas (or different heating elements) of the same heating element for heat transfer. Since the multiple phase change cooling cavities in the heat dissipation module are independent of each other, and different phase change cooling cavities cool the different heating areas (or different heating elements) of the heating element respectively, in this way, the heat generated by the different heating areas (or different heating elements) of the heating element is simultaneously transferred toward one side of the plate body and conducted to the phase change working medium in the phase change cooling cavity. On the one hand, this can improve the uniformity of heat dissipation, and on the other hand, this can reduce the transfer of heat in the heating element inside the heating element (or between different heating elements), thereby improving the heat dissipation efficiency.

[0046] In addition, in some preferred embodiments, a phase change tube assembly capable of liquefying the gaseous phase change medium is also provided to improve the heat dissipation efficiency of the heat dissipation module.

[0047] Furthermore, on the basis that the heat dissipation module includes multiple phase change cooling cavities, the phase change tube assembly is connected to the phase change cooling cavity away from the top of the fin 4 of the heat dissipation module in the vertical working state. It should be noted that in the vertical working state of the heat dissipation module, the phase change cooling cavity close to the top of the fin 4 is more likely to exchange heat with the external environment. In this embodiment, the phase change tube assembly is arranged to be connected to the phase change cooling cavity away from the top of the fin 4 of the heat dissipation module in the vertical working state. On the one hand, the phase change tube assembly can be used as a buffer structure to avoid excessive accumulation of gaseous phase change working fluid in the above-mentioned phase change cooling cavity, resulting in deformation or even damage of the phase change cooling cavity. On the other hand, the phase change tube assembly can assist the phase change cooling cavity away from the top of the fin 4 to transform the gaseous phase change working fluid into a liquid phase change working fluid, which is conducive to improving the uniformity of the heat dissipation capacity of different phase change cooling cavities in different heat dissipation modules. It can also improve the overall heat dissipation efficiency of the heat dissipation module.

[0048] In an exemplary embodiment, the phase change tube assembly includes a phase change main tube and a plurality of branch tubes, wherein the phase change main tube has an inner cavity for accommodating and liquefying a gaseous phase change medium, and the branch tube is used to connect the phase change region and the inner cavity, so that the gaseous phase change medium in the phase change region of the plurality of fins 4 can enter the inner cavity of the phase change main tube. Specifically, the phase change main tube is arranged at the top of the heat dissipation module in a vertical working state, so that the gaseous phase change medium diffuses into the phase change main tube, and the plurality of branch tubes are respectively connected to different connecting tubes, thereby realizing the connection between the phase change tube assembly and the corresponding phase change cooling cavity.

[0049] Furthermore, there is a gap between the phase change main pipe and the fins 4 to ensure the circulation of gas and improve the heat dissipation efficiency of the heat dissipation module.

[0050] In addition, the present invention does not specifically limit the shape of the phase change main pipe, which can be set as a round pipe or a square pipe as needed, but is preferably set to a shape with a larger heat dissipation area to ensure the heat dissipation efficiency of the heat dissipation module.

[0051] Furthermore, in some embodiments, the heat dissipation module further includes a reflux pipe, which is connected to the phase change main pipe and the phase change cooling cavity, and is used to guide the liquid phase change working medium in the inner cavity to the phase change cooling cavity. In this way, the gas phase change working medium enters the phase change main pipe from the phase change cooling cavity through the connecting pipe and the branch pipe, and the liquid phase change working medium in the phase change main pipe flows back to the phase change cooling cavity through the reflux pipe. The liquid phase change working medium and the gas phase change working medium have different flow channels, respectively, thereby promoting the circulation of the phase change working medium between the phase change cooling cavity and the phase change main pipe.

[0052] In addition, if Figure 4 and Figure 5As shown, a protective plate 3 for protecting the fin 4 is provided on the side of the fin 4 away from the plate body, so as to reduce the probability of damage to the fin 4 under the action of external force. It should be understood that in order to ensure the heat dissipation efficiency, the cavity wall of the second cavity 41 is relatively thin, which also makes it easy to be damaged under the action of external force. The provision of the protective plate 3 can reduce the probability of external force directly acting on the fin 4, thereby reducing the probability of damage, thereby effectively improving the service life of the heat dissipation module.

[0053] Further, such as Figure 5 As shown, a comb plate 5 is provided between the protective plate 3 and the fin 4 assembly, and a plurality of mounting grooves for fixing the fin 4 are provided on one side of the comb plate 5 close to the fin 4 assembly, and the mounting grooves are arranged one-to-one with the fin 4. In this way, on the one hand, there is a gap between the protective plate 3 and the fin 4, and when the protective plate 3 is subjected to external force, there is a space between the protective plate 3 and the fin 4 to allow the protective plate 3 to deform, thereby reducing the force transmitted from the protective plate 3 to the fin 4 and improving the protective effect of the protective plate 3; on the other hand, the setting of the mounting groove can limit the fin 4, improve the assembly accuracy of the fin 4, so as to improve the heat dissipation effect of the heat dissipation module and reduce the assembly difficulty of the heat dissipation module.

[0054] Further preferably, the protective plate 3 is provided with a plurality of vents so that the gas can pass through the protective plate 3. In this way, the influence of the setting of the protective plate 3 on the gas flow can be reduced to ensure the heat dissipation efficiency and heat dissipation effect of the heat dissipation module. It should be noted that the number and diameter of the above-mentioned vents can be adaptively designed according to needs during specific implementation, but it should be ensured that the protective plate 3 can achieve the preset protection effect.

[0055] Further, such as Figure 5 As shown, the heat dissipation module in the embodiment of the utility model includes a plurality of injection tubes 6, and the plurality of injection tubes 6 are respectively connected to different phase change cooling chambers. In order to introduce phase change working fluids into different phase change cooling chambers respectively. It should be noted here that the injection tube 6 can be connected to the first cavity to achieve the connection between the injection tube 6 and the phase change cooling chamber, or it can be connected to the second cavity 41 to achieve the connection between the injection tube 6 and the phase change cooling tube. The utility model does not make specific limitations on this, and adaptive design can be performed as needed during implementation.

[0056] In addition, if Figure 4 and Figure 5 As shown, an embodiment of the utility model further provides a heat dissipation device, including a heat dissipation frame and the above-mentioned heat dissipation module. It should be noted that since the heat dissipation device in this embodiment includes the above-mentioned heat dissipation module, the beneficial effects of the heat dissipation device brought by the heat dissipation module are discussed in detail above and will not be repeated here.

[0057] In some embodiments, Figure 5As shown, the heat dissipation frame includes a frame body 1 with a U-shaped groove structure, and the heat dissipation module is arranged in the groove cavity in the frame body 1. In this way, the frame body 1 with a U-shaped groove structure can serve as a protective structure for the heat dissipation module to prevent it from being damaged by external forces. At the same time, since the U-shaped groove structure has openings in three directions, it can also reduce the influence of the frame wall of the frame body 1 on the gas flow, thereby ensuring the heat dissipation capacity of the heat dissipation module.

[0058] Furthermore, in some preferred embodiments, the heat dissipation frame is configured as a passive heat dissipation structure (i.e., a heat dissipation structure that does not rely on external energy input, but relies on natural physical processes such as heat conduction, heat convection, and radiation to achieve heat dissipation). In this way, the heat dissipation method of the heat dissipation device can be enriched, and it is beneficial to improve the heat dissipation effect of the heat dissipation device. Exemplarily, in some embodiments, a plurality of heat dissipation plates 2 are arranged in the groove cavity of the frame 1 to increase the heat dissipation area of ​​the heat dissipation frame, thereby improving the heat dissipation efficiency of the heat dissipation device. Further preferably, the heat dissipation plates 2 in the groove cavity are distributed in parallel and parallel to the fins 4 in the heat dissipation module to form a heat dissipation flow channel, which is beneficial for the airflow to flow through the heat dissipation device and take away the heat generated by the heat dissipation device.

[0059] In addition, as mentioned above, a protective plate 3 can be provided on the side of the fin 4 away from the plate body to protect the fin 4 and reduce the probability of damage under the action of external force. On this basis, in addition to connecting the protective plate 3 to the fin 4 and / or the comb plate 5, the protective plate 3 can also be connected to the side wall of the heat dissipation frame. In this way, when the protective plate 3 is subjected to external force, most of the force will be transferred to the frame body 1, thereby better protecting the fin 4 and other structures.

[0060] In addition, the utility model also provides a heat dissipation system, including a heating component and a heat dissipation module, wherein the heat dissipation module is the above-mentioned heat dissipation module, which is heat-transfer connected to the heating component. It should be noted here that since the heat dissipation system includes the above-mentioned heat dissipation module, the beneficial effects of the heat dissipation system caused by the heat dissipation module are detailed in the above discussion and will not be repeated here.

[0061] In some embodiments, the heating component includes multiple heating areas (the multiple heating areas may be different heating areas of the same heating element or heating areas of different heating elements). The heat dissipation module has multiple first cavities, and the multiple first cavities correspond to different heating areas, so that the heating component can be evenly cooled and the heat dissipation efficiency can be improved.

[0062] The basic principle of the present invention is described above in conjunction with specific embodiments. However, it should be pointed out that the advantages, strengths, effects, etc. mentioned in the present invention are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. must be possessed by each embodiment of the present invention. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not limitation, and the above details do not limit the present invention to be implemented by adopting the above specific details.

[0063] It should also be noted that in the device, apparatus and method of the present invention, each component or each step can be decomposed and / or reassembled, and such decomposition and / or reassembly shall be regarded as an equivalent solution of the present invention.

[0064] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0065] It should be understood that the limiting terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present invention are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present invention.

[0066] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the utility model to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A heat dissipation module, characterized in that: include: The plate body is provided with a first cavity; A fin is provided with a second cavity, and the fin is provided with a plurality of fins, and the second cavities in the plurality of fins are all connected with the first cavity to form a phase change cooling cavity; The region in the second cavity where the gas phase-change medium is transformed into the liquid phase-change medium is the phase-change zone. A plurality of fins are provided, and the phase-change zones of adjacent fins are connected via a connecting pipe.

2. The heat dissipation module according to claim 1, characterized in that: There are a plurality of the first cavities, and any of the fins is provided with a plurality of the second cavities. The plurality of second cavities in the same fin are respectively connected with different first cavities to form a plurality of independent phase change cooling cavities.

3. The heat dissipation module according to claim 2, characterized in that: It also includes a phase change tube assembly capable of liquefying the gaseous phase change medium. When the heat dissipation module is in a vertical working state, the phase change tube assembly is connected to a phase change cooling cavity away from the top of the fin.

4. The heat dissipation module according to claim 3, characterized in that: The phase change tube assembly comprises: A phase change main pipe having an inner cavity for containing and liquefying the gaseous phase change working medium; A plurality of branch pipes are used to connect the phase change zone and the inner cavity, so that the gaseous phase change medium in the phase change zone of the plurality of fins can enter the inner cavity of the phase change main pipe.

5. The heat dissipation module according to claim 4, characterized in that: It also includes a reflux pipe connected to the phase change main pipe and the phase change cooling chamber, and is used to guide the liquid phase change working medium in the inner cavity to the phase change cooling chamber.

6. The heat dissipation module according to claim 1, characterized in that: A protective plate is arranged on one side of the fin away from the plate body, and the protective plate has a plurality of ventilation holes.

7. A heat dissipation device, characterized in that: include: The heat dissipation frame comprises a frame body with a U-shaped groove structure; The heat dissipation module is the heat dissipation module according to any one of claims 1 to 6, and the heat dissipation module is arranged in the groove cavity of the frame.

8. The heat dissipation device according to claim 7, characterized in that: A plurality of heat dissipation plates are arranged in parallel in the groove cavity of the frame body, and the heat dissipation plates are parallel to the fins in the heat dissipation module to form a heat dissipation flow channel.

9. The heat dissipation device according to claim 7, characterized in that: When the heat dissipation module includes a protection plate, the protection plate is connected to the side wall of the heat dissipation frame.

10. A heat dissipation system, characterized in that: include: Heating components; A heat dissipation module is heat-transferably connected to the heat-generating component, and the heat dissipation module is the heat dissipation module according to any one of claims 1 to 6.

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