TWI275765B - Wick structure, method of manufacturing the wick structure, and heat pipe - Google Patents

Abstract

A wick structure for a heat pipe includes a mesh layer woven by metal wires. The metal wires have a number of branches formed on the surfaces thereof. The branches can reduce the size of the mesh holes of the mesh layer, thereby improving the capillary force of the wick structure. A method of forming the branches is to spray an amount of metal powder on the mesh layer while the mesh layer is being heated. An alternative method of forming the branches is to pressingly place a heated mesh layer on a worktable that has an amount of metal powder disposed thereon, so that the metal powder is attached on the mesh layer.

Description

I275765 IX. INSTRUCTION DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a bristles structure capable of increasing capillary suction without increasing the weaving density, and a method of manufacturing the same, and a heat total using the capillary structure . /... [Prior technology]

At this stage, for electronic components with high heat generation, it is common to use a combination of fresh heat and heat dissipation. The low-point working liquid filled in the heat pipe absorbs heat and evaporates at the heat-generating electronic component (evaporation end), and moves to the heat-dissipating fin at the heat-dissipating (four) (condensing end) to transfer the heat generated by the heat-generating electronic component to the heat-dissipating film, utilizing heat dissipation The fan takes away the heat generated by the fan, and completes the heat dissipation of the electronic component. The working liquid after the vaporization 9 releases heat at the condensation end and condenses into (4). The (4) is returned to the evaporation end under the action of the hair (4) structure of the heat pipe wall. Entering the people - the circulation of the guard. This has a higher efficiency and heat transfer, and plays a role in the electronic dissemination field. ", fine suction is the main factor affecting the performance of the heat pipe. The size of the capillary suction mainly depends on the capillary structure of the heat pipe. The pores of the capillary structure of the heat pipe are small, and the capillary suction force is larger. ^ = The heat pipe can be divided according to the capillary structure The mesh structure of the groove type, the sintered type, the fiber type and the wire type, and the mesh type is formed by weaving a plurality of wires. If the capillary suction of the fine structure is required, the weaving density is usually increased to make the wires Between the a gap, but 'in the current technology, _ woven to reduce the capillary structure of the pores have a smaller than the wool! 1 纟 4 industry hopes that the need to increase the woven density can increase the capillary suction [invention] ϋ吉构: View细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细 细Providing a method for manufacturing a capillary structure, processing the capillary having a convex capillary, and forming a convex mesh, and then providing a protrusion on the wire to form a J275765 comprising a canister shape, the heat pipe= Sigh & body The above-mentioned capillary structure and the working medium filled in the tube body. Effective ======r protrusion can reduce the heat absorption of the working medium made by the heat medium inside the heat pipe of the # 恤 从, , * wood σκ capillary structure At the end, the heat dissipation efficiency of the heat pipe is improved. The utility model can increase the weaving density to achieve the effect of increasing the capillary suction force. The present invention will be further described below with reference to the accompanying drawings. The cross-sectional shape of the wire 6 is circular or rectangular. The order--the cross-sectional shape of the thread 6 is woven, and it is also woven with the thread 6 of different cross-section shapes. ^.Ge not 6' recorded, the end is made by _Lu. Xiugang special material, the melting point of the winter is less than Or equal to the melting point of the wire 6, the process, the screen has melted and the powder has not been wheatized.. 'As shown in the fourth figure, the capillary structure of the inner wall of the body 2 of the above capillary structure 4 is used. 4 and the valve body 2 filled in the tube body 2 is sighed therein, the tube body 2 is made of a metal having good thermal conductivity, and in this embodiment, it is copper. The tube body 2 can be provided with a bump or _Steaming f is in good contact with the inner wall of the tube 2. 4 The working medium generally adopts a lower boiling point and can be combined with a capillary structure such as water, alcohol, etc. In the heart of the body, as shown in the fifth to seventh figures, the manufacturing process of the capillary structure 4 of the present invention is as follows: Weaving. The wire 6 is cross-woven to form a wire mesh having no protrusions 8; spraying. The wire mesh is placed in a high temperature furnace or other heating device to be twisted, and the nozzle 9 sprays the fine powder on both sides of the wire mesh and the lower surface. 'The fish are small: they are bonded to each other by heat to form a wire mesh with protrusions 8. The wire can be sprayed with a mixture of powders of different materials. ^ 1275765 The heating device is taken out, cooled, and cooled to obtain a wire mesh having the protrusions 6. The present invention can also lay the powder on a flat plate at a normal temperature to form a powder bed, and the wire is placed and heated. The heated screen is quickly placed on the powder bed and the powder is pressed against the screen to form the capillary structure 4. In the present invention, the capillary structure 4 is provided with a plurality of protrusions 8, which can reduce the size of the capillary knot to increase the capillary suction force, so that the medium in the heat pipe using the capillary structure can be quickly returned to the heat absorption of the heat pipe. End [Simple description of the schema] '''s ^

The first figure is a development view of the capillary structure of the present invention; the second figure is a top view of the expansion of the capillary structure of the present invention; the third figure is a partial enlarged view of the second figure; the fourth figure is a sectional view of the heat pipe of the present invention; It is a working flow chart of the manufacturing method of the capillary structure of the present invention. [The main Mao Xu Cai face pulling state. Tube body wire protrusion 2 capillary knot 6 pore ' 8 nozzle 479

Claims (1)

1,1275765 X. Shen Qing patent range · 1. A capillary structure comprising a wire mesh composed of a plurality of wires, the improvement being that the outer surface of the wire is provided with a plurality of protrusions. 2. The capillary structure according to claim 1, wherein the protrusion is attached to the outer surface of the wire. The capillary structure as described in claim 1 wherein the wire has a certain toughness. Made of a material with good thermal conductivity. 4. The capillary structure of claim 3, wherein the wire mesh is formed by weaving a thread of at least one material. 5. The capillary structure of claim 4, wherein the material of the wire is copper or aluminum or stainless steel. 6. The capillary structure of claim 3, wherein the protrusion has a melting point less than or equal to the melting point of the thread. 7. The capillary structure of claim 6, wherein the raised material is at least one of copper or aluminum or stainless steel. 8. The capillary structure of claim 1, wherein the protrusions are of any shape. 9_ A thermal officer comprising a tube body, a capillary structure disposed on the inner wall of the tube, and a working medium filled in the tube body, the capillary structure comprising a wire mesh composed of a plurality of wires, the improvement being: the outer surface of the wire is provided Multiple bumps. 10. If you apply for the heat pipe mentioned in item 9 of the special section, the towel net is made of at least a material with a certain edge and 9 1275765 and good thermal conductivity. Declaring the special and brushing the 9th summary, the cap, _ and the tube system to set up the support or sintering to achieve good contact. 12. A method of manufacturing a capillary structure comprising the steps of: providing a screen without protrusions; providing a projection on the screen to form a screen having projections. </ RTI> 13. The method of applying the method of manufacturing the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of In the manufacturing method of the Maosaki structure described in Item 12 of the application side, the step of providing the protrusion on the screen by the towel comprises heating the screen and powder on the screen to make the powder and the screen dry. Together. The method of producing a capillary structure according to claim 14, wherein the powder is sprayed on the screen on both sides φ. The method for manufacturing a capillary structure according to Item 12, wherein the step of providing a protrusion on the screen comprises heating the screen and placing the screen in a powder bed, and pressing the powder The drill is attached to the screen.