Composite heat dissipation unit combined structure

Abstract

The utility model discloses a combined structure of a combined type heat dissipation unit, which comprises a temperature-uniforming plate and a combined structure between at least one heat pipe, the temperature-uniforming plate is provided with a plate body cavity defined by an upper plate body and a lower plate body which are correspondingly covered together, and the plate body cavity is filled with working liquid and is provided with a first capillary structure. At least one through hole communicated with the airtight cavity is formed in the upper plate body in a penetrating mode, the through hole protrudes and extends towards the outer portion of the upper plate body to form an annular flange, the annular flange is provided with a butt joint positioning part, and the two ends of the heat pipe are arranged to be a closed end and an open end respectively. And the open end is provided with a connected part which can generate blocking positioning with the butt joint positioning part, so that the temperature-uniforming plate and the heat pipe can be quickly and correctly positioned, inserted and combined by virtue of the blocking positioning design, and the heat pipe is prevented from being inserted relative to the temperature-uniforming plate; and the situation of excessive insertion depth, insufficient insertion depth or inclined insertion occurs due to unstable force application.

Description

Technical Field

[0001] The utility model relates to a composite heat dissipation structure, in particular to a heat dissipation unit combination structure capable of correctly positioning and combining a heat pipe and a heat spreader. Background Art

[0002] With the progress of technology, the number of transistors per unit area of electronic components is increasing, and in addition, their operating frequencies are also getting higher and higher. The heat generated by the operation of transistors is the reason for the increase in the heat generation of electronic components. If these heats cannot be removed quickly and properly, it will cause a reduction in the chip instruction cycle, and in severe cases, it will even affect the life of the chip. To enhance the heat dissipation effect of electronic components, generally, a passive heat sink and / or a heat pipe and / or a heat spreader are used for heat conduction, so that the heat source exchanges heat with the external environment through the fins of the heat sink.

[0003] A heat spreader (Vapor chamber) includes a plate-shaped housing and a capillary structure on the inner wall surface of the housing cavity. The housing is filled with a working fluid, and one side of the housing (i.e., the evaporation area) is attached to a heat-generating component (such as a central processing unit, north-south bridge chip, transistor, etc.) to absorb the heat generated by the heat-generating component, so that the liquid working fluid evaporates due to heat in the evaporation area and is converted into vapor (gaseous state), and the heat is conducted to the condensation area of the housing through the vapor. The gaseous working fluid is condensed into a liquid after being cooled in the condensation area, and the liquid working fluid then returns to the evaporation area through gravity or the capillary structure to continue the vapor-liquid cycle, so as to effectively achieve the effect of uniform temperature heat dissipation. The working principle of a heat pipe (Heat pipe) is the same as that of a heat spreader. Its structural design is mainly to fill the hollow part in a heat pipe with a circular tube diameter with metal powder, and form a capillary structure on the inner wall of the heat pipe by sintering. Then, the heat pipe is evacuated and filled with a working fluid, and finally sealed to form a heat pipe structure. The working fluid is evaporated by heat at the evaporation end and then conducted to the remote condensation end.

[0004] Comparing the heat conduction patterns of the heat spreader and the heat pipe, they are not exactly the same. The heat conduction pattern of the heat spreader is two-dimensional (point-to-plane) heat conduction, while the heat conduction mode of the heat pipe is one-dimensional (point-to-point) heat conduction. Generally, the heat dissipation efficiency of the heat spreader is much higher than that of the heat pipe. However, the heat dissipation requirements of current electronic power components are increasing day by day, and only cooperating with a single heat pipe or heat spreader is no longer sufficient. Therefore, in this application field, the above-mentioned heat pipe and heat spreader are currently developed and used in combination to improve the heat conduction efficiency of the overall device, in order to solve the heat dissipation problem of electronic components with increasing power.

[0005] Currently, the general combination method of the heat spreader and the heat pipe (please refer to Figures 1 to 4), usually, a through hole 102 is formed in the upper plate 101 of the heat pipe flat plate 10, and then the open end 110 of the heat pipe 11 is inserted into the through hole 102 for joining to communicate the heat pipe chamber 111 and the heat pipe flat plate chamber 103. After the above-mentioned insertion and connection are completed, it is necessary to ensure that the internal capillary microstructures 104 and 112 of the two components are also connected together to form an internal working fluid circuit before the outer shell of the heat pipe 11 can be welded and sealed to the housing of the heat pipe flat plate 10; however, currently, the insertion of the heat pipe into the heat pipe flat plate still relies on manual insertion and docking by personnel followed by welding and fixing. When inserting the heat pipe 11 into the through hole 102 for joining, due to the different grasping forces of each insertion, the depth of insertion cannot be accurately controlled, resulting in the inability to achieve consistent and precise positioning of the insertion between the heat pipe and the heat pipe flat plate; or even in the case of blind manual insertion, it is very easy to insert too deep (such as Figure 1 and Figure 2 ), causing the open end 110 of the heat pipe 11 to completely fill the inner bottom surface of the lower plate 105 of the heat pipe flat plate 10 or damage the internal capillary microstructure 104, thereby preventing the heat pipe chamber 111 from communicating with the heat pipe flat plate chamber 103 and making the internal working fluid unable to convect and operate; or when the insertion is skewed or the depth is insufficient (such as Figure 3 and Figure 4 ), the capillary microstructures 104 and 112 between the two assembled components cannot be in actual contact and communication, which will significantly affect the water return efficiency of the overall working fluid and seriously affect the overall heat conduction performance.

[0006] In view of the above problems, the inventor of this case has painstakingly studied and finally completed the combined structure of the heat dissipation unit of this case to overcome the deficiencies of the prior art. Summary of the Utility Model

[0007] The main purpose of the present utility model is to provide a combined structure of a composite heat dissipation unit, which is particularly provided with parts that can be simply and accurately docked and locked with each other at the combined part of the heat pipe and the heat pipe flat plate. This not only can accelerate the positioning operation of the combination, but also can avoid the above-mentioned traditional deficiencies and the influence on the overall heat dissipation performance due to inaccurate docking between the heat pipe and the heat pipe flat plate.

[0008] Another purpose of the present utility model is to provide a combined structure of a composite heat dissipation unit, which can quickly and correctly combine and position the heat pipe flat plate and the heat pipe to save the assembly time, and is supplemented by forming a supporting force between the two combined components to play an auxiliary positioning role in subsequent reprocessing such as welding.

[0009] To achieve the above object, the present utility model provides a composite heat dissipation unit combination structure, including a heat pipe and at least one heat pipe. The heat pipe has an upper plate body and a lower plate body. The upper and lower plate bodies are opposed to each other to jointly define a plate body chamber. The plate body chamber has a first capillary structure and is filled with a working fluid. At least one through hole penetrates the upper plate body and communicates with the plate body chamber. A ring flange protrudes outward from the outer peripheral edge of the through hole toward the outside of the heat pipe. A docking positioning portion is provided at the ring flange (at least the inner peripheral surface); a heat pipe chamber is provided inside the heat pipe and can communicate with the aforementioned plate body chamber when the heat pipe is inserted into the heat pipe. The two ends of the heat pipe are respectively set as a closed end and an open end, and a receiving portion that can be engaged with the docking positioning portion is provided at the vicinity of the open end (at least the outer peripheral surface). When the two are inserted and combined with each other, a blocking positioning can be generated at a set insertion depth to avoid unexpected adverse phenomena in the insertion depth and direction of the heat pipe inserted into the heat pipe.

[0010] In a feasible embodiment, the length from the receiving portion of the heat pipe to the open end is a set length, and a heat pipe chamber is provided inside the heat pipe. A second capillary structure is provided in the chamber. According to the set length, when the open end is locked by the docking positioning portion and the receiving portion, the depth of the open end extending into the heat pipe can still keep the airtight chambers of the heat pipe and the heat pipe in communication with each other, and the second capillary structure can just form good contact with the first capillary structure in the plate body chamber of the heat pipe (the first and second capillary structures are any one of sintered powder, woven mesh, grid body, and fiber body, and the first and second capillary structures can be capillary structures of the same or different properties) to achieve the best combination state.

[0011] In another feasible embodiment, the docking positioning portion is a ring convex portion that is provided on the inner peripheral surface of the ring flange and protrudes toward the center. The receiving portion is a ring concave portion that is provided on the outer peripheral surface of the heat pipe near the open end and can be paired with the ring convex portion. When the docking positioning portion and the receiving portion are inserted into the corresponding positions, they can be engaged with each other (locked), and a limit is formed to prevent displacement or mutual pushing and pulling without external force or micro force and then reinsertion or falling off.

[0012] In still another feasible embodiment, the docking positioning portion can be set as a ring concave portion that is provided on the inner peripheral surface of the ring flange, and the receiving portion is set as a ring convex portion that is provided on the outer peripheral surface of the heat pipe near the open end corresponding to the ring concave portion.

[0013] To achieve the above object, the present utility model further provides a composite heat dissipation unit combination structure, including a heat pipe and at least one heat pipe. The heat pipe has an upper plate body and a lower plate body. The upper and lower plate bodies are opposed to each other to jointly define a plate body chamber. A first capillary structure is provided in the plate body chamber. At least one through hole penetrates the upper plate body and communicates with the plate body chamber. A ring flange protrudes upward from the through hole to the outside of the upper plate body. The ring flange is provided with a docking and positioning portion. The inside of the heat pipe has a heat pipe chamber that can communicate with the plate body chamber. A second capillary structure is provided in the heat pipe chamber. The two ends of the heat pipe are respectively set as a closed end and an open end. A receiving portion is provided near the open end, which can be clamped with the docking and positioning portion. The length from the receiving portion to the open end is a set length. When the set length makes the docking and positioning portion and the receiving portion form the above-mentioned clamping and positioning, the open end is exactly located between the docking and positioning portion and the first capillary structure inside the lower plate body, and the second capillary structure of the heat pipe can just form a good connection with the first capillary structure inside the heat pipe, and there will be no situation of excessive insertion or insufficient insertion between the heat pipe and the heat pipe.

[0014] According to the above structure, the docking and positioning portion is a protruding portion provided on the inner peripheral surface of the ring flange, and the receiving portion is a recessed portion provided on the outer peripheral surface of the heat pipe near the open end.

[0015] According to the above structure, the docking and positioning portion is a recessed portion provided on the inner peripheral surface of the ring flange, and the receiving portion is a protruding portion provided on the outer peripheral surface of the heat pipe near the open end.

[0016] According to the above structure, it further includes at least one of a support body and a capillary structure body provided in the plate body chamber and corresponding to the through hole. The two ends of the support body or the capillary structure body are respectively connected to the first capillary structure and the second capillary structure.

[0017] According to the above structure, the first capillary structure and the second capillary structure are at least one selected from sintered powder, woven mesh, grid body, and fiber body.

[0018] According to the above structure, the support body is a porous structure body.

[0019] According to the above structure, it further includes a reinforcing collar sleeved on the outer peripheral portion of the ring flange for inserting the open end of the heat pipe.

[0020] According to the above structure, the reinforcing collar has a central hole that exactly conforms to the outer diameter of the heat pipe, and a ring sleeve body with an inner diameter that exactly conforms to the outer diameter of the ring flange.

[0021] With the above technical solutions, the utility model can quickly and correctly combine and position the heat pipe and the heat pipe, and assist with a supporting force to simplify the assembly operation, and can avoid the influence on heat dissipation due to inaccurate alignment or blind insertion of the heat pipe and the heat pipe caused by human error. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the state where the capillary structure on the inner bottom surface of the heat pipe is damaged due to too deep insertion between the traditional heat pipe and the heat pipe.

[0023] Figure 1A For Figure 1 An enlarged schematic view of part A of

[0024] Figure 2 It is another schematic diagram of the state where the insertion between the traditional heat pipe and the heat pipe is too deep.

[0025] Figure 3 It is a schematic diagram of the state where the insertion between the traditional heat pipe and the heat pipe is too shallow and the internal capillary structure is not in contact.

[0026] Figure 3A For Figure 3 An enlarged schematic view of part A of

[0027] Figure 4 It is a schematic diagram of the state where the insertion between the traditional heat pipe and the heat pipe is too shallow and the insertion is skewed.

[0028] Figure 5 It is a three-dimensional exploded view of the first embodiment of the utility model.

[0029] Figure 6 For Figure 5 A sectional view of the combined state of the illustrated embodiment.

[0030] Figure 7 It is a sectional view of the state before combination of the second embodiment.

[0031] Figure 8 It is a sectional view of the combined state of the second embodiment of the utility model.

[0032] Figure 9 It is a three-dimensional exploded view of the third embodiment of the utility model.

[0033] Figure 10 For Figure 9 A sectional view of the combined state of the illustrated embodiment.

[0034] Figure 11 It is a schematic diagram of the state before assembly of the docking positioning part and the receiving part of the fourth embodiment of the utility model.

[0035] Figures 12 to 13Schematic diagram of the assembly process of the docking and positioning part and the receiving part in the fifth embodiment of the present utility model.

[0036] Figure 14 Schematic diagram of the state of the docking and positioning part and the receiving part in the sixth embodiment of the present utility model.

[0037] Figure 14A For the present utility model Figure 14 In the illustrated embodiment, an enlarged schematic diagram showing the part where the flange is sleeved with the reinforcing collar.

[0038] Explanation of symbol markings in the drawings:

[0039] 2: Heat spreader

[0040] 3: Heat pipe

[0041] 10: Heat spreader

[0042] 11: Heat pipe

[0043] 20: Upper plate body

[0044] 21: Lower plate body

[0045] 22: Plate body chamber

[0046] 23: First capillary structure

[0047] 24: Support body

[0048] 25: Capillary structure body

[0049] 30: Closed end

[0050] 31: Open end

[0051] 32: Heat pipe chamber

[0052] 33: Notch

[0053] 34: Second capillary structure

[0054] 35: Receiving part

[0055] 36: Outer diameter

[0056] 40: Collar

[0057] 41: Central hole

[0058] 42: Inner diameter

[0059] 101: Upper plate body

[0060] 102: Receiving through hole

[0061] 103: Heat spreader chamber

[0062] 104: Capillary microstructure

[0063] 105: Lower plate

[0064] 110: Open end

[0065] 111: Heat pipe chamber

[0066] 112: Capillary microstructure

[0067] 201: Through hole

[0068] 202: Ring flange

[0069] 203: Inner peripheral surface

[0070] 204: Docking positioning part

[0071] 310: Outer peripheral surface

[0072] 2020: Outer diameter Detailed implementation mode

[0073] The above object, structure and functional characteristics of the present utility model will be described according to the preferred embodiments of the accompanying drawings.

[0074] Figure 5 For the exploded three-dimensional schematic diagram of the first embodiment of the present utility model, please refer to Figure 6 , Figure 6 For the present utility model Figure 5 The combined state cross-sectional schematic diagram of the illustrated embodiment is shown in the figure. As shown in the figure, the present utility model is a composite heat dissipation unit combined structure, including a heat pipe 3, and the heat pipe 3 has a closed end 30 and an open end 31 at both ends, and a heat pipe chamber 32 is provided inside thereof. A notch 33 is provided at the open end 31, and a second capillary structure 34 is provided inside the heat pipe 3. The open end 31 is inserted into the inside of the ring flange 202 and the through hole 201, so that the heat pipe chamber 32 is communicated with the plate body chamber 22.

[0075] The lower plate 21 of the heat pipe 3 is inserted into the inside of the ring flange 202 and the through hole 201, so that the heat pipe chamber 32 is communicated with the plate body chamber 22.

[0076] As can be observed from the drawings, for the utility model, a docking positioning portion 204 is provided on the ring flange 202 (at least the inner peripheral surface 203) of the upper plate body 20 of the heat pipe 2. At a position corresponding to the docking positioning portion 204 at the near opening end 31 (at least the outer peripheral surface 310) of the heat pipe 3, a receiving portion 35 is provided. Between the docking positioning portion 204 and the receiving portion 35, when inserted into each other correspondingly, they can form mutual docking and blocking fixation. And the length from the receiving portion 35 to the opening end 31 can be set such that when the mutual docking and blocking fixation occurs, it can just enable the first capillary structure 23 or the capillary structure body 25 to form good contact with the first capillary structure 23, and the opening end 31 will be located between the first capillary structures 23 below the docking positioning portion 204 and above the lower plate body 21. Thus, by the mutual blocking fixation of the docking positioning portion 204 and the receiving portion 35, such mutual docking (insertion, blocking, clamping or screwing) can limit the opening end 31 of the heat pipe 3, and can also prevent the heat pipe 3 from being inserted too deeply or insufficiently into the heat pipe 2. And in order to make the insertion combination of the heat pipe 3 and the heat pipe 2 be accurately docked and straight without skew, the utility model particularly sets the docking form of the docking positioning portion 204 and the receiving portion 35 into a structure with at least three or more points of docking in the whole circumference, so that the insertion relationship between the heat pipe 3 and the heat pipe 2 can be self-guided during docking, avoiding the occurrence of incorrect insertion.

[0077] Please refer to Figures 6 to 11 As shown, the distance from the receiving portion 35 to the opening end 31 on the heat pipe 3 of the present utility model is particularly designed according to the combined connection forms of various different types of first capillary structures 23 in the heat pipe 2. Especially when the opening end 31 correspondingly penetrates through the ring flange 202 and enters the plate body chamber 22 of the heat pipe 2, it can enable the second capillary structure 34 of the heat pipe 3 to be fully combined with the first capillary structure 23 of the heat pipe 2. For example, in Figure 7 and Figure 9 When the heat pipe 2 and the heat pipe 3 are mutually docked and positioned by the docking positioning portion 204 and the receiving portion 35, the opening end 31 of the heat pipe 3 can just abut against the first capillary structure 23 on the inner side surface of the lower plate body 21 of the heat pipe 2, and the notch 33 presented on one side of the opening end 31 communicates the plate body chamber 22 of the heat pipe 2 with the heat pipe chamber 32 of the heat pipe 3. Moreover, the first capillary structure 23 and the second capillary structure 34 can be in full contact with each other, so that the working fluid can smoothly pass through the second capillary structure 34 after condensing and flowing back from the heat pipe chamber 32 and be transmitted to the first capillary structure 23 to be provided to the evaporation area of the heat pipe 2, and then absorb the heat of the heat source to form a cycle.

[0078] In this way, it can avoid the occurrence of Figure 1 As shown, when the heat pipe 11 is inserted too deeply, the capillary microstructure 104 in the heat pipe 10 is damaged by being inserted and pressed by the opening end 110 of the heat pipe 11; or another example is Figure 3 andFigure 4 As shown, when the heat pipe 11 is inserted insufficiently, the capillary microstructures 104 and 112 between the heat spreader 10 and the heat pipe 11 cannot be effectively connected, resulting in an interruption of the capillary microstructures 104 and 112. This causes the working fluid that condenses and flows back in the heat pipe 11 to be unable to smoothly flow back into the plate cavity 22 of the heat spreader 10 to complete the cycle cooling operation. Therefore, by the mutual docking of the docking positioning portion 204 and the receiving portion 35 of the present utility model to form a limit with a determined depth, the depth of the heat pipe 3 inserted into the heat spreader 2 can be guaranteed. Relatively, the combined state between the first capillary structure 23 and the second capillary structure 34 can be determined, just avoiding the occurrence of the above-mentioned traditional deficiencies and problems.

[0079] Figure 7 and Figure 8 FIG. is a schematic diagram of the second embodiment of the present utility model. In this embodiment, the degree of insertion of the heat pipe 3 into the heat spreader 2 is set such that when the docking positioning portion 204 and the receiving portion 35 are in docking and positioning, the open end 31 of the heat pipe 3 just extends to the position of the through hole 201 of the upper plate body 20 and does not protrude into the plate cavity 22. Moreover, the first capillary structure 23 and the second capillary structure 34 also just extend to this position to form a connecting contact.

[0080] Figure 9 and Figure 10 FIG. shows a schematic diagram of the third embodiment of the present utility model, mainly showing that inside the plate cavity 22 of the heat spreader 2, at a position corresponding to the lower part of the through hole 201, there is another implementation form of a support body 24 or a capillary structure body 25. And the support body 24 or the capillary structure body 25 can be a porous structure body. When its two ends are respectively connected to the first capillary structure 23 and the second capillary structure 34, the length of the heat pipe 3 of the present utility model from the receiving portion 35 to the open end 31 can also be set such that when the docking positioning portion 204 and the receiving portion 35 are in docking and positioning, the open end 31 just displaces to a position where it can indeed touch the top of the support body 24 or the capillary structure body 25, enabling the first capillary structure 23 and the second capillary structure 34 to also form a good connection relationship at this position.

[0081] From Figure 7 In the embodiment, the docking positioning portion 204 is a ring convex portion protruding towards the center of the ring flange 202, which is at least disposed on the inner peripheral surface 203 of the ring flange 202. The receiving portion 35 is a ring concave portion that is at least disposed on the outer peripheral surface 310 near the open end 31 of the heat pipe 3 and is recessed towards the center of the heat pipe 3.

[0082] Figure 11 FIG. is a schematic diagram of the fourth embodiment of the present utility model. In this embodiment, the docking positioning portion 204 is a ring concave portion recessed towards the inner peripheral surface 203 on the inner peripheral surface 203 of the ring flange 202, and the receiving portion 35 is provided as a ring convex portion protruding outwards on the outer peripheral surface 310 near the open end 31.

[0083] Figure 12 and Figure 13 is a schematic diagram of the fifth embodiment of the present utility model. In this embodiment, the docking and positioning portion 204 is provided with at least three recessed tracks recessed from the inner peripheral surface 203 of the annular flange 202 toward the inner peripheral surface 203 of the annular flange 202. The receiving portion 35 is configured to have at least three protruding points on the outer peripheral surface 310 near the open end 31 toward the heat pipe 3. The number of protruding points and recessed points of the docking and positioning portion 204 and the receiving portion 35 is set to be equal.

[0084] Figure 14 and Figure 14A is a schematic diagram of the sixth embodiment of the present utility model. As shown in the figure, the present utility model inserts the heat pipe 3 into the opening portion of the annular flange 202, and is further sleeved with a reinforcing collar 40. The reinforcing collar 40 is sleeved on the outer periphery of the opening of the annular flange 202, and the reinforcing collar 40 has a central hole 41 that exactly conforms to the outer diameter 36 of the heat pipe 3, and a ring sleeve body with an inner diameter 42 that exactly conforms to the outer diameter 2020 of the annular flange 202. After the docking and positioning portion 204 and the receiving portion 35 are mutually docked and locked, the structure strength of the opening portion of the annular flange 202 can be strengthened by sleeving the reinforcing collar 40, so that the straightness of the heat pipe 3 after being inserted into the annular flange 202 can be guided and made more stable and certain, and the situation of skew insertion can be avoided.

[0085] In summary, the present utility model simply locks and limits the docking and positioning portion 204 provided on the heat dissipation plate 2 and the receiving portion 35 provided on the heat pipe 3 to each other, and can indeed reduce or even completely avoid the insertion error and inaccuracy caused by manual alignment insertion or blind insertion between the heat pipe 3 and the heat dissipation plate 2, such as excessive or insufficient insertion skew. Therefore, the present utility model can make the combination and positioning of the heat dissipation plate 2 and the heat pipe 3 faster and more accurate. Moreover, the mutual docking of the docking and positioning portion 204 and the receiving portion 35 can simply form a limit and a basic supporting force at the combined portion, and further has the function of assisting in reprocessing and simplifying the assembly operation.

[0086] The present utility model has been described in detail above. However, the above description is only a preferred embodiment of the present utility model and cannot limit the scope of implementation of the present utility model. That is, all equivalent changes and modifications made according to the scope of the present utility model application should still fall within the patent coverage scope of the present utility model.

Claims

1. A composite heat dissipation unit combination structure, characterized in that: The composite heat dissipation unit combined structure comprises: A temperature-averaging plate, comprising an upper plate body and a lower plate body, the upper plate body and the lower plate body are matched to define a plate body chamber, the plate body chamber has a first capillary structure, at least one through hole penetrates the upper plate body and is connected to the plate body chamber, an annular flange is formed by protruding from the through hole to the upper plate body, and the annular flange is provided with a docking positioning portion; and At least one heat pipe has a heat pipe cavity inside which can be communicated with the plate body cavity, and a second capillary structure is provided in the heat pipe cavity. The two ends of the heat pipe are respectively set as a closed end and an open end, and a receiving portion is provided near the open end, which can be clamped with the docking positioning portion, and the length from the receiving portion to the open end is a set length. The set length allows the docking positioning portion and the receiving portion to form the above-mentioned clamping position when the receiving portion forms the above-mentioned clamping position, and the open end is located between the docking positioning portion and the first capillary structure inside the lower plate body, and the second capillary structure of the heat pipe can form a good connection with the first capillary structure inside the temperature equalizing plate, so that the insertion group between the heat pipe and the temperature equalizing plate will not be too deep or insufficient.

2. The composite heat dissipation unit assembly structure according to claim 1, characterized in that: The docking positioning portion is a protruding portion arranged on the inner circumference of the annular flange, and the receiving portion is a concave portion arranged on the outer circumference of the heat pipe near the opening end.

3. The composite heat dissipation unit assembly structure according to claim 1, characterized in that: The docking positioning portion is a recessed portion arranged on the inner circumference of the annular flange, and the receiving portion is a protruding portion arranged on the outer circumference of the heat pipe near the opening end.

4. The composite heat dissipation unit combination structure according to any one of claims 1 to 3, characterized in that: It also includes at least one of a support body and a capillary structure body disposed in the plate body cavity and corresponding to the through hole, and two ends of the support body or the capillary structure body are respectively connected to the first capillary structure and the second capillary structure.

5. The composite heat dissipation unit combination structure according to any one of claims 1 to 3, characterized in that: The first capillary structure and the second capillary structure are at least one selected from sintered powder, woven mesh, grid body, and fiber body.

6. The composite heat dissipation unit assembly structure according to claim 4, characterized in that: The first capillary structure and the second capillary structure are at least one selected from sintered powder, woven mesh, grid body, and fiber body.

7. The composite heat dissipation unit assembly structure according to claim 4, characterized in that: The support body is a porous structure.

8. The composite heat dissipation unit combination structure according to any one of claims 1 to 3, characterized in that: It also includes a reinforcing ring arranged on the outer peripheral portion of the opening of the heat pipe inserted into the annular flange.

9. The composite heat dissipation unit assembly structure according to claim 4, characterized in that: It also includes a reinforcing ring arranged on the outer peripheral portion of the opening of the heat pipe inserted into the annular flange.

10. The composite heat dissipation unit assembly structure according to claim 5, characterized in that: It also includes a reinforcing ring arranged on the outer peripheral portion of the opening of the heat pipe inserted into the annular flange.

11. The composite heat dissipation unit assembly structure according to claim 7, characterized in that: It also includes a reinforcing ring arranged on the outer peripheral portion of the opening of the heat pipe inserted into the annular flange.

12. The composite heat dissipation unit assembly structure according to claim 8, characterized in that: The reinforcing sleeve ring is provided with a central hole which just matches the outer diameter of the heat pipe, and a sleeve body which has an inner diameter which just matches the outer diameter of the ring flange.

13. The composite heat dissipation unit assembly structure according to claim 9, characterized in that: The reinforcing sleeve ring is provided with a central hole which just matches the outer diameter of the heat pipe, and a sleeve body which has an inner diameter which just matches the outer diameter of the ring flange.

14. The composite heat dissipation unit assembly structure according to claim 10, characterized in that: The reinforcing sleeve ring is provided with a central hole which just matches the outer diameter of the heat pipe, and a sleeve body which has an inner diameter which just matches the outer diameter of the ring flange.

15. The composite heat dissipation unit assembly structure according to claim 11, characterized in that: The reinforcing sleeve ring is provided with a central hole which just matches the outer diameter of the heat pipe, and a sleeve body which has an inner diameter which just matches the outer diameter of the ring flange.

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