High-conductivity heat pipe

Abstract

The utility model relates to a high-conductivity heat pipe which comprises a hollow pipe body, sealing parts are arranged at the two ends of the pipe body to enable the inside of the pipe body to be in a vacuum state, an evaporation section and at least one condensation section are arranged between the two sealing parts, and the evaporation section is connected with a condensation pipe in a penetrating mode. And at least one contact surface is arranged on the outer surface of the evaporation section. The contact surface is arranged on the outer surface of the evaporation section, so that the evaporation section is in surface contact with the heating surface; the contact area with a heating source is increased; in the using process, the heat conduction pipes are arranged, so that the contact faces of the heat conduction pipes are located on the same horizontal plane and abut against a heating source. A contact surface is designed; and heat generated by the heating source can be quickly transferred to the heat conduction pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pipes, in particular to a high-conductivity heat pipe. Background Art

[0002] Heat pipes have been widely used in electronic components with large heat generation due to their high heat transfer advantages. When the heat pipe is working, the low-boiling-point working medium filled inside the pipe body absorbs the heat generated by the heat-generating electronic components in the evaporation section and then evaporates and vaporizes. The steam moves to the condensation section with the heat, and liquefies and condenses in the condensation section to release the heat, thereby dissipating the heat of the electronic components. The liquefied working medium flows back to the evaporation section under the action of the capillary structure of the inner wall of the heat pipe, continues to evaporate and vaporize, and liquefies and condenses, so that the working medium circulates inside the heat pipe, and the heat generated by the electronic components is continuously dissipated.

[0003] In the process of using the existing heat pipe, in order to enable the heat generated by the electronic components to be quickly transferred to the heat pipe, an aluminum mounting seat is usually provided, and silicone is used for heat transmission between the mounting seat and the electronic components, and the evaporation section of the heat pipe is inserted into the mounting seat. The heat pipe is flush with the top surface of the mounting seat or inserted into the mounting seat. It is equivalent to the heat generated by the electronic components being transferred to the heat pipe through the mounting seat for heat dissipation. However, in terms of the heat dissipation efficiency of the installation method of inserting the heat pipe into the mounting seat, a part of the heat will be concentrated on the mounting seat and cannot be transferred to the heat pipe, but returned to the electronic components. At the same time, the transfer efficiency of the transfer through the mounting seat itself is higher. The heat pipe is inserted into the mounting seat and the heat pipe is flush with the top surface of the mounting seat. Although the electronic components and the heat pipe are in contact, the contact method between the heat pipe and the electronic components is line contact, and a large amount of heat is still transmitted through the mounting seat. In terms of processing cost, when processing the mounting seat, the number of heat pipes required for the mounting seat is equal to the number of insertion holes required on the mounting seat. The purpose of setting the insertion holes is to increase the contact area between the heat pipe and the mounting seat. This makes the processing cost of the mounting seat higher and the structure more complicated. Utility Model Content

[0004] The purpose of the utility model is to provide a high-conductivity heat pipe to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-conductivity heat pipe, including a hollow tube body, sealing parts are arranged at both ends of the tube body to make the tube body in a vacuum state, an evaporation section and at least one condensation section are arranged between the two sealing parts, and the evaporation section is connected with the condensation tube; at least one contact surface is arranged on the outer surface of the evaporation section.

[0006] Compared with the prior art, by providing a contact surface on the outer surface of the evaporation section, the evaporation section and the heating surface achieve surface contact; the contact area with the heat source is increased; during use, multiple heat conduction tubes are arranged so that the contact surfaces of the multiple heat conduction tubes are on the same horizontal plane and abut against the heat source; through the design of the contact surface, the heat generated by the heat source can be quickly transferred to the heat conduction tubes.

[0007] As a preferred technical solution of the present utility model, two contact surfaces are provided on the outer surface of the evaporation section, and the two contact surfaces are arranged in parallel on the outer surface of the evaporation section.

[0008] As a preferred technical solution of the present utility model, three contact surfaces are provided on the outer surface of the evaporation section, and the three contact surfaces are arranged in a "冂" shape or a triangle on the outer surface of the evaporation section.

[0009] As a preferred technical solution of the present utility model, four contact surfaces are provided on the outer surface of the evaporation section, and the four contact surfaces are connected end to end to form a quadrilateral on the outer surface of the evaporation section.

[0010] As a preferred technical solution of the present utility model, liquid-absorbing cores are provided in both the evaporation section and the condensation section, and tube holes with the same diameter are provided in both liquid-absorbing cores. The thickness of the liquid-absorbing core in the evaporation section is less than the thickness of the liquid-absorbing core in the condensation section.

[0011] Compared with the prior art, when the steam is liquefied after cooling in the condensation section, the latent heat is released and re-condensed into a liquid working medium, and then flows back to the evaporation section through the liquid-absorbing core structure; it is equivalent to the liquid flowing from a large diameter to a small diameter; a certain pressure is generated to accelerate the capillary flow velocity of the liquid working medium.

[0012] As a preferred technical solution of the present utility model, a condensation section is provided between the two sealing parts, and one of the sealing parts is connected to the end of the evaporation section; when the other sealing part is connected to the end of the evaporation section; the evaporation section and the condensation section are fixedly connected in a through manner.

[0013] As a preferred technical solution of the present utility model, two condensation sections are provided between the two sealing parts; the two condensation sections are respectively fixedly connected to the two ends of the evaporation section; the two sealing parts are respectively fixedly connected to the two condensation sections.

[0014] As a preferred technical solution of the present utility model, the condensation section includes an installation section for installing ridge fins and an arc-shaped transition section located between the installation section and the evaporation section. The bending radius of the transition section is greater than or equal to three times the diameter of the condensation end.

[0015] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solution, and the advantages brought by the technical features of the technical solution described above, other technical problems that can be solved by the present invention, other technical features included in the technical solution, and the advantages brought by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 It is the AA sectional view of the utility model.

[0018] Explanation of the accompanying drawings: 01. Shell, 02. Liquid absorption core, 03. Sealing part, 04. Evaporation section, 05. Condensation section, 06. Contact surface, 07. Installation section, 08. Transition section. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] like Figure 1-2 As shown, the high-conductivity heat pipe of the utility model adopts a pipe body made of copper pipe. The pipe body has a shell 01, a liquid wick 02 and a tube hole from the outside to the inside. The liquid wick 02 is attached to the inner side of the shell 01 wall. The function of the liquid wick 02 is to generate capillary force. The tube hole is set along the axis of the liquid wick 02. The liquid wick 02 adopts a sintered copper core, and the working medium is injected into the liquid wick 02. The working medium is deionized water. When one end of the heat pipe is heated (evaporation section 04), the liquid working medium in the liquid wick 02 will be vaporized into steam, and the steam will flow to the other end under the pressure difference inside the heat pipe. At the other end (condensation section 05), the steam is liquefied after being cooled, releasing latent heat and re-condensing into liquid working medium, and then flows back to the evaporation section 04 through the liquid wick 02 structure.

[0021] The two ends of the tube body are crimped to form a sealing portion 03, and an evaporation section 04 and at least one condensation section 05 are provided between the two sealing portions 03. The tube body is sealed by the two sealing portions 03 so that the interior of the tube body is in a vacuum state.

[0022] When a condensation section 05 is provided between two sealing parts 03, one of the sealing parts 03 is connected to the end of the evaporation section 04. When the other sealing part 03 is connected to the end of the evaporation section 04. At the same time, the evaporation section 04 and the condensation section 05 are fixedly connected. The evaporation section 04 is in contact with the heat source (photovoltaic inverter, computer CPU radiator, GPU radiator, graphics card radiator, server radiator, stage lamp, mining lamp, car lamp, etc.), and heat is transferred through the condensation end. And heat is dissipated through the ridges on the condensation section 05.

[0023] When two condensation sections 05 are arranged between the two sealing parts 03, the two condensation sections 05 are respectively fixedly connected to the two ends of the evaporation section 04. The two sealing parts 03 are respectively fixedly connected to the two condensation sections 05. Therefore, during use, the heat on the evaporation section 04 is conducted through the condensation sections 05 at both ends, accelerating the heat conduction efficiency of the evaporation section 04.

[0024] like Figure 2 As shown, at least one contact surface 06 that abuts against the heat source is provided on the evaporation section 04, and the contact surface 06 is extruded by stamping when processing. During use, multiple heat pipes are fixed on the base in an arranged manner, and the contact surfaces 06 of the multiple heat pipes are on the same horizontal plane and directly abut against the heat source. The heat generated by the heat source can be quickly transferred to the heat pipe and transferred through the heat pipe. A number of ridges are provided on the condensation end. The heat on the heat pipe is transferred to the surface of the ridge through the ridge, and then the heat on the ridge is taken away by the action of an external fan. Avoid using other structures to transfer heat. Improve transfer efficiency. At the same time, in terms of the processing cost of the base. Only one mounting groove needs to be processed on the top surface of the base. Compared with the traditional processing cost of interlaced holes, it is lower.

[0025] Therefore, during the processing, the copper tube is first cut into the required length. Secondly, the evaporation section 04 is processed on the copper tube to form a contact surface 06 on the evaporation section 04; thirdly, the hole of the evaporation section 04 is processed to make the hole of the evaporation section 04 coaxial with the hole of the condensation section 05, and one end of the copper tube is narrowed to facilitate the subsequent sealing process; from then on, copper powder is filled into the copper tube, and the copper tube filled with copper powder is sintered in an atmosphere furnace to form a capillary liquid wick 02; finally, the working medium is added into the copper tube and the copper tube is sealed to make the copper tube in a vacuum state.

[0026] Since the contact surface 06 is provided on the evaporation section 04, the aperture of the evaporation section 04 is smaller than the aperture of the condensation section 05, so as to ensure that the diameters of the tube holes provided along the axis of the wick 02 are the same. As a result, the thickness of the wick 02 in the evaporation section 04 is smaller than the thickness of the wick 02 in the condensation section 05. When the steam is cooled in the condensation section 05, it liquefies, releases latent heat and recondenses into liquid working medium, and then flows back to the evaporation section 04 through the wick 02 structure. This is equivalent to the liquid flowing from a large diameter to a small diameter. A certain pressure is generated to accelerate the capillary flow rate of the liquid working medium.

[0027] Two contact surfaces 06 are arranged on the outer surface of the evaporation section 04 , and the two contact surfaces 06 are arranged in parallel on the outer surface of the evaporation section 04 .

[0028] There are three contact surfaces 06 provided on the outer surface of the evaporation section 04, and the three contact surfaces 06 are arranged in a "冂" shape or a triangle on the outer surface of the evaporation section 04.

[0029] At the same time, four contact surfaces 06 can also be provided on the outer surface of the evaporation section 04, and the four contact surfaces 06 are connected end to end to form a "口" shape (quadrilateral) on the outer surface of the evaporation section 04.

[0030] The condensation section 05 includes an installation section 07 for installing the ridge fins and an arc-shaped transition section 08 located between the installation section 07 and the evaporation section 04. Since the arc-shaped transition section 08 will reduce the heat conduction performance of the heat pipe. Therefore, the bending radius of the transition section 08 is greater than or equal to three times the diameter of the condensation end. Ensure a smooth transition between the installation section 07 and the evaporation section 04. The smaller the change in the maximum heat transfer power of the heat pipe.

[0031] If there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0032] The above embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-conductivity heat pipe, comprising a hollow tube body, characterized in that: Sealing portions are provided at both ends of the tube body to make the inside of the tube body in a vacuum state. An evaporation section and at least one condensation section are provided between the two sealing portions, and the evaporation section is connected to the condensation tube in a through manner; at least one contact surface is provided on the outer surface of the evaporation section.

2. The high-conductivity heat pipe according to claim 1, characterized in that: Two contact surfaces are provided on the outer surface of the evaporation section, and the two contact surfaces are arranged in parallel on the outer surface of the evaporation section.

3. The high-conductivity heat pipe according to claim 1, characterized in that: Three contact surfaces are provided on the outer surface of the evaporation section, and the three contact surfaces are arranged in a "冂" shape or a triangle on the outer surface of the evaporation section.

4. The high-conductivity heat pipe according to claim 1, characterized in that: Four contact surfaces are provided on the outer surface of the evaporation section, and the four contact surfaces are connected end to end to form a quadrilateral on the outer surface of the evaporation section.

5. The high-conductivity heat pipe according to any one of claims 1 to 4, characterized in that: Liquid-absorbing cores are provided in both the evaporation section and the condensation section. Tube holes with the same diameter are provided in both liquid-absorbing cores, and the thickness of the liquid-absorbing core in the evaporation section is smaller than the thickness of the liquid-absorbing core in the condensation section.

6. The high-conductivity heat pipe according to claim 5, characterized in that: One condensation section is provided between the two sealing portions, and one of the sealing portions is connected to the end of the evaporation section; when the other sealing portion is connected to the end of the evaporation section; the evaporation section and the condensation section are fixedly connected in a through manner.

7. The high-conductivity heat pipe according to claim 5, characterized in that: Two condensation sections are provided between the two sealing portions; the two condensation sections are respectively fixedly connected to both ends of the evaporation section; the two sealing portions are respectively fixedly connected to the two condensation sections.

8. The high-conductivity heat pipe according to claim 1, characterized in that: The condensation section includes an installation section for installing ridge fins and an arc-shaped transition section located between the installation section and the evaporation section, and the bending radius of the transition section is greater than or equal to three times the diameter of the condensation end.

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