CN100424458C

CN100424458C - Method for forming end face of heat pipe and heat pipe made by said method

Info

Publication number: CN100424458C
Application number: CNB2004100374773A
Authority: CN
Inventors: 徐惠群
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-29
Filing date: 2004-04-29
Publication date: 2008-10-08
Anticipated expiration: 2024-04-29
Also published as: CN1690637A

Abstract

The present invention discloses a forming method of pipe end faces of a heat pipe. A mould which can contain a heat pipe is first prepared; the mould has a mould cavity; the heat pipe is placed in the mould cavity; a pressing stem enters from the part of the mould cavity of the mould for squeezing the end part of the heat pipe in a crushing mode; the pipe end faces of the heat pipe are recessed from outside to inside by utilizing the squeezing of the pressing stem; and consequently, the pipe end faces of the heat pipe do not protrude. Volume space occupied by ineffective parts of the heat pipe is effectively reduced, or a plurality of radiating fins can be arranged under the condition that the length is determined.

Description

The manufacturing process of heat pipe pipe end face

Technical field

The heat pipe that the present invention relates to a kind of manufacturing process of heat pipe pipe end face and utilize this method to make, relating in particular to a kind of heat pipe pipe end face does not protrude, and effectively dwindle the shared volumetric spaces of heat pipe invalid target, or under certain size length, the heat pipe and the pipe end face manufacturing process thereof of more radiating fin can be set.

Background technology

Because characteristics such as heat pipe have very high capacity of heat transmission, conducts heat fast, high, in light weight, the no mobile component of pyroconductivity, simple in structure and purposes are many, thus can transmit a large amount of hot and do not consume electric power, thereby the welcome in the market of extensively being dispelled the heat.

As shown in Figure 1, known heat pipe 1a has the body 10a of an inner hollow, body 10a has outside protrusion and is two end 11a of taper end face, 12a, one of them end 11a is a blind end, the main process draw processes type, the other end 12a then is a sealing end, not through square tube seal program before, the opening-like attitude of this end 12a, to insert capillary structure (wick structure) 13a that is attached on this body 10a internal face in body 10a inside, and inject an amount of working fluid (workingfluid, figure slightly), again through some as vacuumize wait procedure after, can carry out the draw to this end 12a and also carry out sealing operations such as tin sticky or spot welding thereon, thereby form a sealing end 120a.Like this, just can obtain described heat pipe 1a.

Because general heat pipe 1a is in actual use, need the cooperation of the multi-disc radiating fin that be passed usually, the heat that helps heat pipe 1a to discharge to be absorbed, reduce temperature, can continue to carry out with the phase change phenomenon of keeping heat pipe 1a inside.Yet draw structure and the sealing end 120a of two end 11a, the 12a of heat pipe 1a are belonging to the relatively poor position of effect aspect the heat conduction at present, and it helps little to heat conducting efficient.Simultaneously, also can't penetrate thereon because its body structure surface is irregular radiating fin is set, add the limited and trend miniaturization designing requirement in present electronic product inner space, this structure of heat pipe took the electronic product volume inside on the contrary in the past.In Fig. 1, can obviously find out the shared length L of this heat pipe 1a, the practical length l that can wear greater than radiating fin.

In view of this, at above-mentioned shortcoming, the inventor concentrates on studies and uses scientific principle, has invented reasonable in design finally and can effectively overcome the present invention of above-mentioned shortcoming.

Summary of the invention

The heat pipe that main purpose of the present invention provides a kind of manufacturing process of heat pipe pipe end face and utilizes this method to generate, to overcome the above-mentioned shortcoming of prior art, the heat pipe of finishing the program of sealing is carried out the processing second time, this heat pipe pipe end face is not protruded because of the draw or sealing operation, thereby dwindled the shared volumetric spaces of heat pipe invalid target effectively, or under the certain situation of dimensions length, a fairly large number of radiating fin can be set.

For achieving the above object, the invention provides a kind of manufacturing process of heat pipe pipe end face, preparing earlier one can allow heat pipe be contained in wherein mould, this mould has a die cavity, heat pipe is contained in the described die cavity, and pressure ram is entered by the die cavity port of this mould, and the end of opposite heat tube is carried out conquassation and clamp-oned, make the recessed of heat pipe pipe end face ecto-entad to utilize clamp-oning of described pressure ram, and then obtain the non-salient heat pipe of pipe end face.

To achieve these goals, the present invention also provides a kind of heat pipe, has the tube body of heat pipe of inner hollow, described body has two ends, and form the pipe end face of the described body port of sealing on these two ends respectively, wherein, at least one described pipe end face is by the export-oriented internal recess of described body.Thereby, two pipe end faces of tube body of heat pipe are not protruded, realize above-mentioned purpose.

The shared volumetric spaces of heat pipe invalid target of the present invention is little, under the certain situation of dimensions length, a fairly large number of radiating fin can be set.

Description of drawings

Fig. 1 is the schematic diagram of known heat pipe;

Fig. 2 is according to the generalized section of the procedure of processing of the heat pipe of one embodiment of the present of invention (one);

Fig. 3 is according to the generalized section of the procedure of processing of the heat pipe of one embodiment of the present of invention (two);

Fig. 4 finishes generalized section after the processing according to the heat pipe of one embodiment of the present of invention;

Fig. 5 is the generalized section that is provided with radiating fin according to the heat pipe of one embodiment of the present of invention.

The assembly conventional letter is listed as follows in the accompanying drawing 1:

Heat pipe 1a

Body 10a end 11a

End 12a sealing end 120a

Capillary structure 13a

Accompanying drawing 2 assembly conventional letter in the accompanying drawing 5 is listed as follows:

Heat pipe 1

Body 10 ends 11

Pipe end face 110 ends 12

Pipe end face 120 capillary structures 13

Radiating fin 14 molds 2

Upper recess 20 bed dies 3

Lower concave part 30 pressure rams 4

Conquassation end 40

The specific embodiment

Below in conjunction with accompanying drawing feature of the present invention and technology contents are elaborated.Only for reference and the explanation usefulness of accompanying drawing is not limitation of the present invention.

Fig. 2 and Fig. 3 are respectively according to the generalized section of the procedure of processing of the heat pipe of one embodiment of the present of invention () and (two).The heat pipe that the invention provides a kind of manufacturing process of heat pipe and utilize this method to produce, mainly be after a heat pipe 1 manufacturing is finished, again this heat pipe 1 is carried out second time processing,, thereby effectively dwindle the shared volumetric spaces of heat pipe 1 invalid target so that the pipe end face of this heat pipe 1 do not protrude.

As shown in Figure 2, this heat pipe 1 is not before carrying out the processing second time, do not have any difference with general heat pipe 1, all have the working fluid (not shown) that the tube body of heat pipe 10, of an inner hollow is attached to the capillary structure 13 on these body 10 internal faces and injects these body 10 inside in right amount.

As shown in Figure 2, at first, above-mentioned heat pipe 1 is placed between a mold 2 and the bed die 3, be provided with the upper recess 20 and lower concave part 30 that correspond to each other between this upper and lower mould 2,3, when upper and lower mould 2,3 merges up and down, this upper and lower recess 20,30 can constitute a die cavity, and heat pipe 1 can stably be positioned over wherein.

As shown in Figure 3, this die cavity hollow or perforation, two port just in time can be inserted a pressure ram 4 respectively; After two pressure rams 4 are entered by two ports of die cavity, the operation that conquassation is clamp-oned is carried out in two

ends

11,12 that get final product opposite heat tube 1 body 10, an end 11 of the body 10 of this heat pipe 1 is a blind end, the other end 12 is a sealing end, and owing to the pipe end face 110,120 that is formed with closed tube 10 ports on two

ends

11,12 respectively, so after two pressure rams 4 are clamp-oned, this heat pipe 1 can make two pipe end face all by export-oriented body 10 internal recess because of clamp-oning of two pressure rams 4, and then the pipe end face 110,120 of this heat pipe 1 is not protruded.

In addition, two pressure rams 4 mainly are to rely on two pipe end faces 110,120 of conquassation end 40 opposite heat tubes 1 that contact with two

ends

11,12 to push and it is recessed into, so, these two pipe end faces 110,120 are clamp-oned the shape that conquassation constitutes, and must match with the conquassation end 40 of pressure ram 4; Thereby in the embodiments of the invention, because the conquassation end 40 of pressure ram 4 is the taper of protrusion, so by its conquassation and two pipe end faces the 110, the 120th of moulding, the conical surface that matches.Certainly, when the conquassation end 40 of two pressure rams 4 was the plane, then two of body 10 pipe end faces 110,120 also were corresponding plane.

In addition, before the procedure, the end 11 of its body 10 (being blind end) can carry out the action that conquassation is clamp-oned earlier before this heat pipe 1 vacuumizes, injects working fluid etc. and seals, and need not by the time this heat pipe 1 and finishes and just implement after sealing; And the other end 12 of body 10 (being sealing end), then need this end 12 seal finish after, just can carry out the operation that conquassation is clamp-oned.In addition, clamp-on when moving, also can only implement with a pressure ram 4 if reality only needs a wherein

end

11 or 12 of body 10 to carry out described conquassation.Moreover, because heat pipe 1 is made with the good material of thermal conductivity such as copper, aluminium,, can be suitable for carrying out extrusion operation so the plasticity of its processing is good relatively.

Utilize above-mentioned procedure of processing, can obtain heat pipe of the present invention.

As shown in Figure 5, because the pipe end face 110,120 of two

ends

11,12 of this heat pipe 1 does not protrude, therefore, on its effective length L ', all can penetrate radiating fin 14 is set.And compare with the known heat pipe 1a of earlier figures 1:

If L '=1, heat pipe 1 then of the present invention can dwindle its volume shared in electronic product and space under the situation of the radiating fin 14 that equal number is set;

And if L '=L, heat pipe 1 then of the present invention can be provided with more radiating fin 14 on the equal length size, dispel the heat and cooling with this heat pipe 1 of effective help.

In addition, the present invention compares with other heat pipe of prior art, also has following plurality of advantages and characteristic:

1. for the bigger heat pipe of bore, because its body bore is big, the heat pipe sealing volume that manufactures is bigger, so after it is clamp-oned conquassation, its dwindling dimensionally will be more obvious.

With regard to generally with the end cap welding as with regard to the heat pipe that seals, the present invention can obtain more stable heat pipe characteristic, and manufacturing cost is lower, it is comparatively quick to process.

In sum, the present invention really can reach the application target of expection, solves the shortcoming of known technology, again because of it has novelty and creativeness, meets the application important document of patent of invention, now files an application according to Patent Law.

Above-mentioned is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention.All equivalences of using specification of the present invention and accompanying drawing content to be done change and revise, and all are contained in the claim of the present invention, hereby statement.

Claims

1. the manufacturing process of a heat pipe pipe end face, preparation one earlier can be held the mould of heat pipe therein, described mould has a die cavity, described heat pipe is placed in the described die cavity, pressure ram is entered by the port of the die cavity of described mould, and conquassation is carried out in the end of described heat pipe clamp-on, utilize clamp-oning of described pressure ram and make the pipe end face ecto-entad of described heat pipe recessed, thereby the pipe end face of described heat pipe is not protruded.

2. manufacturing process according to claim 1, it is characterized in that, described mould comprises a mold and a bed die, be provided with upper recess and the lower concave part that corresponds to each other between the described upper and lower mould, when described upper and lower mould merged up and down, described upper and lower recess can constitute described die cavity.

3. manufacturing process according to claim 1, it is characterized in that described heat pipe end is a blind end, a sealing end, described heat pipe is comprised earlier vacuumize, inject the preceding procedure of sealing of working fluid, and after its sealing end sealed, just carry out conquassation and clamp-on.

4. manufacturing process according to claim 1, it is characterized in that, described heat pipe end is a blind end, a sealing end, and after the blind end of described heat pipe carried out action that conquassation clamp-ons earlier, just comprise and vacuumize, inject the preceding procedure of sealing of working fluid, after again the sealing end of described heat pipe being sealed, just the sealing end of described heat pipe is carried out conquassation and clamp-on.

5. manufacturing process according to claim 1 is characterized in that, described pressure ram has the conquassation end that contacts with described heat pipe end, the taper of described conquassation end for protruding.