CN100379505C - Heat pipe sealing method and structure without shrinkage pipe - Google Patents

Abstract

A heat pipe sealing method without shrinking pipe includes forming sealing structure on pipe mouth end of heat pipe, sealing to make heat pipe interior be in sealed state, extruding and kneading to form said sealing structure, sealing pipe mouth end of heat pipe to form arc face being identical to outer wall of heat pipe, forming arc circumference formed by arc face to be greater than semi-circumference of outer wall of heat pipe.

Description

Heat pipe sealing method and structure of shrink-free tube

technical field

The present invention relates to a heat pipe sealing method without shrinkage tube and its structure, in particular to a processing step of shrinking the heat pipe, the mouth end of the heat pipe can be sealed and the heat pipe can still be sealed A heat pipe sealing method and a structure thereof for a shrink-free pipe connected to a heat dissipation fin on a pipe port.

Background technique

Fig. 1 shows the sealing structure of the known heat pipe 1a. The nozzle end 10a of the heat pipe 1a is shrunk, first reduced to a narrowed part 100a; The crushed area 101a; and welding (not shown in the figure) is performed on the upper end of the crushed area 101a, thereby sealing the nozzle end 10a of the heat pipe 1a.

But the sealing structure of the above-mentioned known heat pipe 1a, its nozzle end 10a is narrowed into the narrowed part 100a main purpose is to reduce the volume and area of the sealing structure region of the nozzle end 10a first, so that the welding process is carried out. However, although the nozzle end 10a of the heat pipe 1a is narrowed, it is beneficial to the welding process, but it also causes the generation of the invalid end of the heat pipe 1a, especially when the heat pipe 1a needs to be applied to the occasion of connecting fins. Not only the fins cannot be connected due to the reduced pipe diameter, but also the nozzle end 10a must protrude outside the fin group and occupy space.

In view of this, the present inventor artificially improves and solves the defects in the above-mentioned prior art. After painstaking research and application of theories, he finally proposes a reasonable design and effectively improves the above-mentioned defects of the present invention.

Contents of the invention

The main purpose of the present invention is to provide a heat pipe sealing method and its structure without shrinkage tube, which can solve the defects in the known technology, so that the heat pipe can also have the effect of connecting cooling fins on the nozzle end, and can also increase The number of cooling fins connected to the heat pipe, or reduce the space occupied by the invalid ends of the heat pipe protruding from the cooling fins.

In order to achieve the above object, the present invention provides a heat pipe sealing method for shrink-free tubes. It presses the nozzle end of the heat pipe so that the nozzle end forms a flattened tube wall in close contact with the inner wall surface, and makes the flattened tube wall The section length formed by the pipe wall is greater than the semicircle length of the outer wall of the heat pipe.

In order to achieve the above object, the present invention provides a heat pipe sealing structure of a shrink-free tube, which is formed on the nozzle end of the heat pipe; wherein, the nozzle end is a flattened tube wall closely contacting the inner wall surface, and the flattened tube The length of the section formed by the wall is greater than the semicircle length of the outer wall of the heat pipe.

Description of drawings

Fig. 1 is a side sectional schematic diagram of a known shrinkable tube heat pipe

Fig. 2 is the three-dimensional appearance schematic diagram of the embodiment of the present invention;

Fig. 3 is a top view cross-sectional action schematic diagram (1) of the embodiment of the present invention when performing crimping and bonding;

Fig. 4 is a top view cross-sectional action schematic diagram (2) of the embodiment of the present invention when performing crimping and bonding;

Fig. 5 is a top view cross-sectional action schematic diagram (1) of extrusion molding according to an embodiment of the present invention;

Fig. 6 is a top view cross-sectional action schematic diagram (2) when performing extrusion molding according to an embodiment of the present invention;

Fig. 7 is a schematic top view sectional view of an embodiment of the present invention;

Fig. 8 is a schematic diagram of the use state of the embodiment of the present invention;

Fig. 9 is a schematic diagram of the action of the embodiment of the present invention when chamfering.

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

1a - heat pipe

10a-Nozzle end 100a-Narrow part

101a - Flattening area

1- heat pipe

10-nozzle end 100-flattened pipe wall

101-Curved surface 102-Bevel

11-outer wall

2-Crimping mold

20-first model 21-second model

3- Forming mold

30-Compression mold 31-Compression mold

32-Compression mold 33-Compression mold

4- cooling fins

40-perforation

5- Angle forming mold

Detailed ways

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

Fig. 2 is a schematic perspective view of an embodiment of the present invention. The present invention provides a heat pipe sealing method and structure of a shrink-free tube. As shown in FIG. The working fluid (working fluid) can undergo a phase change to ensure the normal function of the heat pipe 1 . At the same time, after the nozzle end 10 of the heat pipe 1 is sealed, the cooling fins 4 (as shown in FIG. 8 ) can still be connected in series thereon.

In forming the sealing structure, the nozzle end 10 of the heat pipe 1 is first crimped and tightly connected, and then further extruded and kneaded to form it; the manufacturing process is now described with reference to the accompanying drawings:

As shown in FIG. 3 and FIG. 4 , firstly, the nozzle end 10 of the heat pipe 1 is placed in the pressing mold 2 , and the pressing mold 2 includes a first mold 20 and a second mold 21 . The first and second molds 20, 21 are respectively convex and concave matching shapes, and squeeze the nozzle end 10 of the heat pipe 1 so that the nozzle end 10 of the heat pipe 1 is pressed and tightly connected, that is, in the form of male and female molds Press molding is carried out so that the nozzle end 10 forms a flattened tube wall 100 in close contact with the inner wall surface, and the section length formed by the flattened tube wall 100 along with the first and second molds 20 and 21 is greater than the semicircle circumference of the outer wall of the heat pipe 1 , forming a structural shape as shown in Figure 4.

In addition, after the nozzle end 10 is crimped and sealed, the edge of the nozzle end of the flattened pipe wall 100 can be further welded to form a better sealing structure; or it can be pressed by ultrasonic welding during crimping. Close connection.

As shown in FIG. 5 and FIG. 6 , after the heat pipe 1 completes the above steps of crimping and bonding, the heat pipe 1 as shown in FIG. 4 can be placed in the forming mold 3 . In the embodiment of the present invention, the molding die 3 includes four sets of pressing dies 30, 31, 32, 33 formed with concave arcs inwardly, so that the flattened tube wall 100 of the heat pipe 1 is relatively located in the four sets of pressing dies. between the molds 30, 31, 32, 33; when the molding die 3 extrudes the flattened tube wall 100 of the heat pipe 1, the flattened tube wall 100 can be formed into an arc-shaped surface consistent with the outer wall 11 of the heat pipe 1 101 (as shown in Figure 2), and because the section length of the flattened tube wall 100 is greater than the semicircle circumference of the heat pipe 1 outer wall, the arc circumference formed by the arc surface 101 is also greater than the semicircle circumference of the heat pipe 1 outer wall 11 , so as to obtain the sealing structure as shown in FIG. 7 .

In addition, if the mouth edge of the flattened tube wall 100 is not welded after the upper mouth end 10 is crimped and sealed, the flattened tube wall 100 can also be squeezed after the extrusion molding step, and then the flattened tube can be welded. The lip of the wall 100 is welded.

Composed of the above structure, the heat pipe sealing method and structure of the shrink-free tube of the present invention can be obtained.

Thus, as shown in Figure 8, when the heat pipe 1 is applied to the occasion of connecting a plurality of cooling fins 4, since the nozzle end 10 of the heat pipe 1 has formed the sealing structure as described in the present invention, because its arc-shaped surface The circumference of the arc formed by 101 is greater than the semicircle length of the outer wall 11 of the heat pipe 1, therefore, the perforations 40 provided on each cooling fin 4 can be tightly matched with the nozzle end 10 of the heat pipe 1, so that the heat pipe The nozzle end 10 of 1 also has the effect of connecting fins 4. At the same time, the molding of the arc surface 101 can also increase the contact between the nozzle end 10 and the heat dissipation fins 4, and increase the number of heat dissipation fins 4 through which the heat pipe 1 passes, or reduce the heat pipe 1 protruding from the heat dissipation fins. 4 The space occupied by the invalid ends outside.

As shown in Figure 9, in order to make the nozzle end 10 of the heat pipe 1 insert into the heat dissipation fin 4, the insertion action is convenient to proceed smoothly, and the nozzle end 10 can also be extruded with the chamfer forming die 5, and the flattened tube A chamfer 102 is formed at the edge of the wall 100 . The chamfer 102 is convenient for the heat pipe 1 to insert the cooling fin 4 at the closed end.

To sum up, the present invention can indeed achieve the expected purpose of use, solve the defects in the prior art, has novelty and creativity, and fully meets the requirements of the invention patent application. The application is filed according to the Patent Law, please check and grant Patent in this case to protect the inventor's rights.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, All are included in the patent scope of the present invention in the same way.

Claims (7)

1. heat pipe seal method of exempting from the draw, it is characterized in that, described method is: the nose end of described heat pipe is being pressed, and make its nose end form the closely flattening tube wall of contact of interior sidewall surface, and make the semicircle girth of the formed section length of described flattening tube wall greater than described heat pipe outer wall, and described flattening tube wall further carried out extrusion modling, make it form the arcwall face consistent with described heat pipe outer wall.

2. heat pipe seal method of exempting from the draw as claimed in claim 1 is characterized in that the nose end of described heat pipe is being pressed moulding in the mode that matched molds pushes relatively.

3. heat pipe seal method of exempting from the draw as claimed in claim 1 when the nose end that it is characterized in that described heat pipe is being pressed, is being pressed with ultrasonic fusing.

4. heat pipe seal method of exempting from the draw as claimed in claim 1, after the nose end that it is characterized in that described heat pipe was being pressed, further the nose end edge to described flattening tube wall welded.

5. heat pipe seal method of exempting from the draw as claimed in claim 1, it is characterized in that described flattening tube wall carries out extrusion modling after, the mouth of pipe edge to described flattening tube wall welds again.

6. heat pipe enclosuring structure of exempting from the draw, it is molded on the nose end of heat pipe; It is characterized in that the nose end of described heat pipe is the closely flattening tube wall of contact of interior sidewall surface, and the formed section length of described flattening tube wall is greater than the semicircle girth of described heat pipe outer wall, described flattening tube wall has the arcwall face consistent with described heat pipe outer wall.

7. heat pipe enclosuring structure of exempting from the draw as claimed in claim 6 is characterized in that the nose end edge of described flattening tube wall is formed with lead angle.

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