CN2773601Y - heat pipe multilayer capillary - Google Patents

Abstract

A heat pipe multilayer capillary tissue comprises a hollow heat pipe body with an inner wall, an outer layer capillary tissue attached to the inner wall of the heat pipe body, and an inner layer capillary tissue overlapped with the outer layer capillary tissue; the outer and inner capillary structures are formed by weaving nets, each weaving net is formed by interweaving a plurality of weaving wires, and the diameter of the weaving wire forming the outer capillary structure is smaller than that of the weaving wire forming the inner capillary structure. This variation allows the capillary tissue to have both capillary force and support characteristics, thereby addressing the deficiencies of the prior art.

Description

heat pipe multilayer capillary

technical field

The utility model relates to a heat pipe multi-layer capillary structure, in particular to a heat pipe multi-layer capillary structure with good capillary force and adhesion, which is applied to the heat pipe with multi-layer capillary structure.

Background technique

Because the heat pipe has the characteristics of strong heat transfer capacity, fast heat transfer speed, high thermal conductivity, light weight, no moving parts, simple structure and multiple uses, it can transfer a large amount of heat without consuming power, which is very suitable for the heat dissipation needs of electronic products . In addition, the known heat pipe inner wall is provided with capillary (wick structure), and the capillary structure can be a woven mesh with capillary action, etc., and the transmission of the working fluid (working fluid) in the heat pipe can be facilitated by utilizing the capillary action of the capillary structure. At the same time, in order to increase the capillary force of the capillary tissue and the capillary transport capacity of the working fluid, the capillary tissue can be multi-layered to increase the transport capacity of the working fluid.

As shown in Figure 1, the braided capillary structure 1a of the known heat pipe forms multiple layers in a continuous crimping manner; however, after the capillary structure 1a is crimped and placed inside the heat pipe body 2a, it must go through a sintering (sintering) manufacturing process, The capillary tissue 1a is attached to the inner wall of the heat pipe body 2; however, during the sintering manufacturing process of the capillary tissue 1a, since the braided mesh is very soft, the overlapping part A of the capillary tissue 1a does not adhere well to the wall, and there is no additional Therefore, in the process of high temperature annealing, defects such as subsidence and poor sintering will occur due to thermal softening, so that the capillary structure 1a cannot be completely attached to the inner wall of the heat pipe body 2a.

In view of the defects in the above-mentioned known technologies, the designer, relying on years of experience in this industry, devoted himself to research and combined with practical applications, and actively researched and improved in the spirit of excellence, and finally proposed a design that is reasonable and effectively improves the above-mentioned defects. of the utility model.

Contents of the utility model

The main purpose of this utility model is to provide a heat pipe multi-layer capillary structure, which attaches the capillary structure with a finer diameter of the braided mesh on the inner wall of the heat pipe body, and uses the capillary structure with a larger diameter to provide the inner capillary structure. The required supporting force enables the capillary tissue to have both capillary force and supporting properties, thereby solving the defects in the prior art.

In order to achieve the above object, the utility model provides a heat pipe multilayer capillary structure, which includes a hollow heat pipe body with an inner wall, an outer capillary tissue attached to the inner wall of the heat pipe, and The inner layer of capillary tissue is overlapped; wherein, the outer and inner layer of capillary tissue are composed of braided mesh, and each braided mesh is formed by interweaving a plurality of braided wires, and the diameter of the braided wire that constitutes the outer layer of capillary tissue Thinner than the diameter of the braided wire constituting the inner capillary structure.

Brief description of the drawings

Fig. 1 is a schematic cross-sectional view of a known heat pipe finished product;

Fig. 2 is the schematic diagram of the action of curling the multi-layer capillary tissue of the present invention;

Fig. 3 is a three-dimensional exploded view of the heat pipe body and multi-layer capillary structure of the utility model;

Fig. 4 is a cross-sectional schematic view of the finished product of the heat pipe of the present invention;

FIG. 5 is a partially enlarged detail view of FIG. 4 .

In the accompanying drawings, the list of parts represented by each label is as follows:

1a-Capillary 2a-Heat pipe body

1-Heat pipe body 10-Inner wall

2-Outer Capillary 20-Braided Mesh

200-Braided wire 3-Inner capillary tissue

30-Braided Mesh 300-Braided Wire

Detailed ways

In order for those skilled in the art to further understand the features and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model. The accompanying drawings are for reference and illustration only, and are not intended to limit the present utility model.

As shown in Figure 2, Figure 3 and Figure 4, the utility model provides a heat pipe multi-layer capillary structure, including a hollow heat pipe body 1, an outer capillary structure 2 and an inner capillary structure 3; wherein:

As shown in Figure 2, the outer and inner capillary structures 2, 3 are all made of braided nets 20, 30; The inner capillary structure 3 is also composed of multiple layers of braided nets 30 overlapped. After the braided nets 20, 30 of the outer and inner layer capillary structures 2, 3 are overlapped, all the braided nets 20, 30 are crimped to form a full circle shape.

As shown in FIG. 3 and FIG. 4 , the inside of the heat pipe body 1 is hollow, and the curled outer and inner capillary structures 2 and 3 are arranged therein. An inner wall 10 is formed inside the heat pipe body 1, and the outer capillary tissue 2 is attached to the inner wall 10 of the heat pipe body 1, while the inner capillary tissue 3 overlaps with the outer capillary tissue 2, and the outer capillary tissue 2 is located on the heat pipe tube. Between the body 1 and the inner capillary tissue 3 .

As shown in Figure 5, the braided nets 20,30 of the outer and inner capillary structures 2,3 of the present utility model are formed by interweaving a plurality of braided wires 200,300, and the diameter of the braided wires 200 constituting the outer capillary tissue 2 It is thinner than the diameter of the braided wire 300 constituting the inner capillary structure 3 . Since the diameter of the braided wire 200 of the outer capillary tissue 2 is relatively thin, it is relatively soft and has good wall-adhesive properties, thereby improving the capillary force of the inner wall 10 of the heat pipe body 1, and the formed fibers are also relatively thin, so It can also increase its capillary force; yet, also because the diameter of the outer layer of capillary tissue 2 is relatively small, it is easy to collapse when cutting the pipe, or to soften when heated in the high-temperature annealing procedure, which affects the adhesion to the inner wall of the heat pipe body 2. Compatibility. Due to the rigidity of the braided wire 300 of the inner capillary structure 3 having a relatively thick diameter, it is not easy to soften and collapse when exposed to heat in the high-temperature annealing procedure, so it can support the outer capillary tissue 2 during annealing, so that the outer capillary tissue 2 can be closely adhered to Closed on the inner wall 10 of the heat pipe body 1, the inner capillary tissue 3 can also provide additional capillary force and transmission capacity.

Therefore, the heat pipe multilayer capillary structure of the present utility model, because the diameter of the braided wire 300 of the inner layer capillary structure 3 is thicker, so can support the outer layer capillary structure 2, ensure that the outer layer capillary structure 2 is compatible with the heat pipe body 2 when annealing. Integrity of inner wall bonding, and the thinner diameter of the braided wire 200 of the outer capillary tissue 2 can be used to obtain better capillary force and wall adhesion.

To sum up, the heat pipe multi-layer capillary structure of the present invention can indeed utilize the above-mentioned structure to achieve the above-mentioned effects. Moreover, the utility model has not been seen in publications and has not been publicly used before the application of the utility model. It meets the requirements of novelty and creativity of the new patent, and the application is filed according to the Patent Law.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. fields, are all included in the patent scope of the utility model in the same way.

Claims (3)

1. A heat pipe multilayer capillary structure, comprising: The heat pipe body is provided with an inner wall; The outer layer of capillary tissue is attached to the inner wall of the heat pipe body; The inner layer of capillary tissue is overlapped with the outer layer of capillary tissue, and the outer layer of capillary tissue is arranged between the heat pipe body and the inner layer of capillary tissue; It is characterized in that the outer capillary structure and the inner layer capillary structure are composed of braided nets, and each braided net is formed by interweaving a plurality of braided wires, and the diameter ratio of the braided wires constituting the outer layer capillary tissue constitutes the inner layer capillary tissue The diameter of the braided wire is thin. 2. The heat pipe multi-layer capillary structure according to claim 1, characterized in that the outer capillary structure is formed by overlapping multiple layers of the braided mesh. 3. The heat pipe multi-layer capillary structure according to claim 1, characterized in that the inner capillary structure is formed by overlapping layers of the woven mesh.

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