Magnetic force fixing type heat pipe

Abstract

The utility model provides a magnetic force fixing type heat pipe. The magnetic force fixing type heat pipe comprises a pipe shell, a pipe core, a steam cavity and a base. The utility model has the advantages that: in a magnetic environment, the base is subjected to adsorption force so as to fix the heat pipe. In addition, the base is arranged on the outer wall of the heat pipe, normal operation of the heat pipe is not affected, namely, the design of the base can increase fixed adsorption force generated by the red copper heat pipe in a magnetic environment, and the heat transfer performance of a traditional heat pipe is not affected.

Description

Technical Field

[0001] This utility model relates to heat pipes, and more particularly to a magnetically fixed heat pipe. Background Technology

[0002] Heat pipes have a thermal conductivity more than 100 times that of ordinary metals. This superior conductivity has led to the increasingly widespread application of heat pipe radiators in electronic devices, making heat pipe cooling technology a crucial technology for efficient heat dissipation in electronic equipment. A heat pipe radiator is a type of radiator where heat pipes are embedded into a metal substrate through welding. It boasts advantages such as high heat transfer efficiency, low cost, mature technology, and short production cycle, making it suitable for products that eliminate single-point heat sources or have high single-point heat source power. Currently, heat pipe radiators typically employ a low-temperature brazing process, where the heat pipe is embedded in a heat pipe groove and then coated with a low-temperature brazing filler metal for welding. However, the current process is complex, resulting in a relatively low product yield. This is because problems such as heat pipe floating during welding can lead to performance degradation or even product failure.

[0003] To address this issue, patent 202420199198.X proposes a heat pipe radiator welding device based on thermal convection and thermal radiation. The principle is that after the copper heat pipe is nickel-plated, the nickel-plated heat pipe is always firmly fixed in the bottom of the heat pipe groove due to the electromagnetic attraction force generated by the electromagnetic device after being energized. This avoids the need for mechanical fixing methods that affect the thermal performance of the heat pipe in traditional methods.

[0004] Patent 202323524143.6 proposes a tooling for welding heat pipe radiators. The principle is that the nickel-plated heat pipe is firmly fixed to the bottom of the heat pipe groove under the magnetic attraction of the tooling, thereby completely avoiding the problems of product performance degradation or even scrapping caused by the heat pipe floating during the traditional heat pipe radiator welding process.

[0005] The effectiveness of the aforementioned two patents, 202420199198.X and 202323524143.6, hinges on the requirement of nickel plating on the heat pipe surface. Only after nickel plating can the heat pipe generate an adsorption force in a magnetic field. However, the nickel plating process not only increases production costs but also places a significant burden on the environment. Therefore, how to enable the heat pipe to generate an adsorption force in a magnetic field and firmly fix it to the bottom of the heat pipe tank without nickel plating is a pressing problem that needs to be solved. Summary of the Invention

[0006] In view of this, in order to overcome the problems of product performance degradation or even scrapping caused by heat pipe floating during the welding process of heat pipe radiators, this utility model proposes a magnetically fixed heat pipe. By placing this new type of heat pipe at the bottom of the heat pipe groove, it is fixed to the bottom of the heat pipe groove under the attraction of magnetic force, thereby completely solving the problem of heat pipe floating during the subsequent heat pipe radiator welding process.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A magnetically fixed heat pipe includes: a shell made of copper; a core, which is an annular object located inside the shell and tightly fitted to the inner wall of the shell; a vapor chamber, which is a hollow cavity located inside the core; and a base located outside the shell and tightly fitted to the outer wall of the shell.

[0009] Furthermore, the base is a cuboid minus a cylinder with a circular arc cross-section that coincides with the heat pipe, meaning that the circular arc surface of the base cross-section is in close contact with the wall of the heat pipe, and the bottom surface of the base is in close contact with the bottom of the groove.

[0010] Furthermore, the base is made of one of the three iron-based elements: nickel, cobalt, and iron. The magnetic environment described in this invention is provided by an external electromagnetic device or a tooling magnetic structure. The base, made of ferromagnetic materials such as nickel, cobalt, or iron, can generate an adsorption and fixing force within this external magnetic environment.

[0011] Furthermore, when the base material is selected as iron or cobalt, its outer surface is provided with a nickel or copper plating layer.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows: In a magnetic environment, the base is subjected to an adsorption force, thereby fixing the heat pipe. In addition, the base is arranged on the outer wall of the heat pipe, which does not affect the normal operation of the heat pipe. That is, the design of the base not only increases the fixing adsorption force of the copper heat pipe in a magnetic environment, but also does not affect the heat transfer performance of the traditional heat pipe. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a magnetically fixed heat pipe structure proposed in this utility model.

[0014] Wherein, 1 is the tube shell, 2 is the tube core, 3 is the steam chamber, 4 is the base, 41 is the arc surface of the base, and 42 is the bottom surface of the base. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] A magnetically fixed heat pipe includes: a shell 1 made of copper; a core 2, which is an annular object located inside the shell 1 and tightly fitted to the inner wall of the shell 1; a vapor chamber 3, which is a hollow cavity located inside the core 2; and a base 4 located outside the shell 1 and tightly fitted to the outer wall of the shell 1.

[0018] Furthermore, the base 4 is a cuboid minus a cylinder with a circular arc cross-section that coincides with the heat pipe, that is, the circular arc surface 41 of the base cross-section is in close contact with the wall of the heat pipe, and the bottom surface 42 of the base is in close contact with the bottom of the groove.

[0019] Furthermore, the base 4 is made of iron. Since the base 4 is a ferromagnetic material, it can be subjected to a stable adsorption force in an external magnetic environment. The tight fit between the base 4 and the shell 1 ensures that the adsorption force can be effectively transferred to the entire heat pipe, achieving stable fixation of the heat pipe at the bottom of the groove. Moreover, the copper material of the shell 1 will not interfere with the magnetic effect.

[0020] Furthermore, the base 4 is made of iron and has a layer of nickel plated on its outer surface.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A type of magnetically fixed heat pipe, characterized in that: It includes a shell made of copper; a core, which is a ring-shaped object located inside the shell and tightly fitted to the inner wall of the shell; a steam chamber, which is a hollow cavity located inside the core; and a base located outside the shell and tightly fitted to the outer wall of the shell.

2. A magnetically fixed heat pipe according to claim 1, characterized in that, The base is a cuboid minus a cylinder with a circular arc cross-section that coincides with the heat pipe. That is, the circular arc surface of the base cross-section is in close contact with the wall of the heat pipe, and the bottom surface of the base is in close contact with the bottom of the groove.

3. A magnetically fixed heat pipe according to claim 1, characterized in that, The base is made of one of the three iron-based elements: nickel, cobalt, and iron.

4. A magnetically fixed heat pipe according to claim 3, characterized in that, When the base material is iron or cobalt, its outer surface is plated with nickel or copper.

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