Composite capillary heat pipe

Abstract

The utility model discloses a compound capillary heat guide pipe, include: the pipe shell that outer wall is used for with heat source contact, the inside one end of pipe shell is set to evaporate section, the other end is set to the condensation section through the adiabatic section and evaporate section connection, the inner wall of pipe shell evaporate section is provided with the first capillary layer that extends along the whole circumference, this first capillary layer is connected by first copper powder capillary layer and first braided capillary layer in the circumference and first copper powder capillary layer in the extension length of the circumference is greater than first braided capillary layer in the extension length of the circumference, the inner wall of pipe shell adiabatic section, condensation section is provided with respectively with first braided capillary layer corresponding second braided capillary layer, third braided capillary layer and in the circumference with second braided capillary layer, third braided capillary layer interval distribution's second copper powder capillary layer, third copper powder capillary layer. The utility model can improve the capillary saturation liquid amount and lock water capacity in pipe, and can effectively improve the efficiency of heat conduction and heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation in electronic products, and in particular to a composite capillary heat pipe. Background Technology

[0002] With technological advancements, chip processing capabilities have increased, leading to higher power outputs. The heat generated by these high-power chips needs to be dissipated promptly. As a mainstream heat-conducting component for chips, heat pipes are crucial for addressing the heat dissipation issues of high-power chips, and the capillary design within the heat pipe plays a vital role. Utility Model Content

[0003] The purpose of this invention is to provide a composite capillary heat pipe that can increase the amount of capillary saturated liquid and water-locking capacity inside the pipe, as well as improve the efficiency of heat-carrying steam conduction, thereby effectively improving the heat conduction and heat dissipation performance.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a composite capillary heat pipe, comprising: a shell with an outer wall for contacting a heat source; one end of the shell is configured as an evaporation section, and the other end is configured as a condensation section connected to the evaporation section via an insulation section; a first capillary layer extending circumferentially is provided on the inner wall of the evaporation section of the shell, the first capillary layer being formed by connecting a first copper powder capillary layer and a first braided capillary layer circumferentially, and the circumferential extension length of the first copper powder capillary layer being greater than the circumferential extension length of the first braided capillary layer; a second braided capillary layer and a third braided capillary layer corresponding to the first braided capillary layer are respectively provided on the inner walls of the insulation section and the condensation section of the shell, and a second copper powder capillary layer and a third copper powder capillary layer are distributed circumferentially at intervals from the second braided capillary layer and the third braided capillary layer.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, the first braided capillary layer, the second braided capillary layer and the third braided capillary layer are connected sequentially along the length of the tube shell.

[0006] 2. In the above scheme, the second braided capillary layer and the second copper powder capillary layer, and the third braided capillary layer and the third copper powder capillary layer are all arranged opposite to each other.

[0007] 3. In the above scheme, the ratio of the circumferential extension length of the first copper powder capillary layer and the first woven capillary layer is (3~6):1.

[0008] 4. In the above scheme, the shell is a circular copper shell or a flat copper shell.

[0009] Due to the application of the above technical solution, this utility model has the following advantages and effects compared with the prior art: This utility model relates to a composite capillary heat pipe. The inner wall of the evaporation section of the pipe shell is provided with a first capillary layer extending circumferentially. This first capillary layer is formed by connecting a first copper powder capillary layer and a first braided capillary layer circumferentially, with the circumferential extension length of the first copper powder capillary layer being greater than that of the first braided capillary layer. The inner walls of the insulation section and condensation section of the pipe shell are respectively provided with a second braided capillary layer and a third braided capillary layer corresponding to the first braided capillary layer, and a second copper powder capillary layer and a third copper powder capillary layer distributed circumferentially at intervals from the second and third braided capillary layers. Through the combined arrangement of the capillary structures inside the pipe, both the capillary saturation liquid volume and water-locking capacity can be improved, as well as the steam conduction efficiency carrying heat can be enhanced, effectively improving the heat conduction and dissipation performance. Attached Figure Description

[0010] Appendix Figure 1 This is a top view of the internal structure of the composite capillary heat pipe of this utility model; Appendix Figure 2 For example 1 Figure 1 Schematic diagram of the cross section along the AA direction; Appendix Figure 3 For example 1 Figure 1 Cross-sectional view along the BB direction; Appendix Figure 4 For example 1 Figure 1 A cross-sectional view along the CC direction; Appendix Figure 5 For example 2 Figure 1 A schematic cross-sectional view along the AA direction; Appendix Figure 6 For example 2 Figure 1 Cross-sectional view along the BB direction; Appendix Figure 7 For example 2 Figure 1 A cross-sectional view along the CC direction.

[0011] In the above figures: 1. Shell and tube; 21. Evaporation section; 22. Insulation section; 23. Condensation section; 3. First capillary layer; 31. First copper powder capillary layer; 32. First braided capillary layer; 41. Second copper powder capillary layer; 42. Second braided capillary layer; 51. Third copper powder capillary layer; 52. Third braided capillary layer. Detailed Implementation

[0012] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0013] Example 1: A composite capillary heat pipe includes: a shell 1 with an outer wall for contacting a heat source; one end of the shell 1 is configured as an evaporation section 21, and the other end is configured as a condensation section 23 connected to the evaporation section 21 via an insulation section 22; a first capillary layer 3 extending circumferentially is provided on the inner wall of the evaporation section 21 of the shell 1; the first capillary layer 3 is formed by connecting a first copper powder capillary layer 31 and a first braided capillary layer 32 circumferentially, and the circumferential extension length of the first copper powder capillary layer 31 is greater than the circumferential extension length of the first braided capillary layer 32; a second braided capillary layer 42 and a third braided capillary layer 52 corresponding to the first braided capillary layer 32 are respectively provided on the inner walls of the insulation section 22 and the condensation section 23 of the shell 1; and a second copper powder capillary layer 41 and a third copper powder capillary layer 51 are distributed circumferentially at intervals from the second braided capillary layer 42 and the third braided capillary layer 52.

[0014] The first braided capillary layer 32, the second braided capillary layer 42 and the third braided capillary layer 52 are connected sequentially along the length of the tube shell 1; The ratio of the circumferential lengths of the first copper powder capillary layer 31 and the first woven capillary layer 32 is 5:1; Figure 2-4 As shown, the above-mentioned shell 1 is a circular copper shell.

[0015] Example 2: A composite capillary heat pipe includes: a shell 1 with an outer wall for contacting a heat source; one end of the shell 1 is configured as an evaporation section 21, and the other end is configured as a condensation section 23 connected to the evaporation section 21 via an insulation section 22; a first capillary layer 3 extending circumferentially is provided on the inner wall of the evaporation section 21 of the shell 1; the first capillary layer 3 is formed by connecting a first copper powder capillary layer 31 and a first braided capillary layer 32 circumferentially, and the circumferential extension length of the first copper powder capillary layer 31 is greater than the circumferential extension length of the first braided capillary layer 32; a second braided capillary layer 42 and a third braided capillary layer 52 corresponding to the first braided capillary layer 32 are respectively provided on the inner walls of the insulation section 22 and the condensation section 23 of the shell 1; and a second copper powder capillary layer 41 and a third copper powder capillary layer 51 are distributed circumferentially at intervals from the second braided capillary layer 42 and the third braided capillary layer 52.

[0016] The second woven capillary layer 42 and the second copper powder capillary layer 41, and the third woven capillary layer 52 and the third copper powder capillary layer 51 are all disposed opposite to each other; the ratio of the circumferential extension lengths of the first copper powder capillary layer 31 and the first woven capillary layer 32 is 4:1. like Figure 5-7 As shown, the above-mentioned tube shell 1 is a flat copper tube shell; the above-mentioned first copper powder capillary layer 31, second copper powder capillary layer 41 and third copper powder capillary layer 51 are all formed by sintering copper powder.

[0017] The sintering process of the capillary layer is not an improvement of this application and falls within the scope of prior art, so it will not be elaborated here.

[0018] The evaporation section adopts a capillary design where copper powder and braided copper wires come into contact, which increases the amount of capillary saturated liquid and water-locking ability, effectively improving thermal conductivity and reducing chip temperature. The insulation section adopts a capillary design that separates copper powder and braided copper wire, which increases the volume of the steam chamber after liquid vaporization, reduces thermal resistance, and can quickly transfer the vaporized steam in the evaporation section to the insulation section, effectively improving the heat conduction effect. The condensation section also adopts a capillary design that separates copper powder and braided copper wire, increasing the capacity of vaporized steam and effectively dissipating more heat. After releasing heat in the condensing section, the steam condenses into liquid and enters the separate capillary layer, then flows back to the evaporation section under the action of combined capillary forces.

[0019] When using the above-mentioned composite capillary heat pipe, the combination of capillary structures inside the pipe can improve the amount of capillary saturated liquid and water-locking capacity, as well as the efficiency of heat-carrying steam conduction, thus effectively improving the heat conduction and heat dissipation performance.

[0020] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A composite capillary heat pipe, comprising: The outer wall is a shell (1) for contact with a heat source. One end of the shell (1) is configured as an evaporation section (21), and the other end is configured as a condensation section (23) connected to the evaporation section (21) via an insulation section (22). The shell (1) is characterized in that a first capillary layer (3) extending in the full circumference is provided on the inner wall of the evaporation section (21). The first capillary layer (3) is formed by connecting a first copper powder capillary layer (31) and a first braided capillary layer (32) in the circumferential direction. The circumferential extension length of layer (31) is greater than the circumferential extension length of the first braided capillary layer (32). The inner walls of the insulation section (22) and condensation section (23) of the shell (1) are respectively provided with a second braided capillary layer (42) and a third braided capillary layer (52) corresponding to the first braided capillary layer (32), and a second copper powder capillary layer (41) and a third copper powder capillary layer (51) distributed circumferentially at intervals from the second braided capillary layer (42) and the third braided capillary layer (52).

2. The composite capillary heat pipe according to claim 1, characterized in that: The first braided capillary layer (32), the second braided capillary layer (42) and the third braided capillary layer (52) are connected sequentially along the length of the tube shell (1).

3. The composite capillary heat pipe according to claim 1 or 2, characterized in that: The second braided capillary layer (42) and the second copper powder capillary layer (41), and the third braided capillary layer (52) and the third copper powder capillary layer (51) are all arranged opposite to each other.

4. The composite capillary heat pipe according to claim 1, characterized in that: The ratio of the circumferential extension lengths of the first copper powder capillary layer (31) and the first woven capillary layer (32) is (3~6):

1.

5. The composite capillary heat pipe according to claim 1, characterized in that: The shell (1) is a circular copper shell or a flat copper shell.

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