CN2708225Y

CN2708225Y - Heat pipe

Info

Publication number: CN2708225Y
Application number: CN 200420067238
Authority: CN
Inventors: 徐惠群
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-18
Filing date: 2004-06-18
Publication date: 2005-07-06
Anticipated expiration: 2014-06-18

Abstract

The utility model relates to a heat pipe, comprising the pipe body of the heat pipe and capillary tissues in the pipe body. The capillary tissue contains a plurality of grooves formed on the inner circumferential surface of the pipe body and axially extending along the pipe body and sintered powders adhering on the inner end surface of the pipe body. Due to the fact that the sintered powder just needs to be adhered to the inner end surface of the pipe body, the core rod is not needed in the sintering process of the capillary tissue; therefore, the fabrication process is simplified, and moreover, the transfer characteristic and the heat conducting efficiency of the capillary tissues of the heat pipe can not be influenced due to the damage on the sintered tissue due to the fact that the core rod is extracted; simultaneously the capillary tissue of the heat pipe is caused to have the good capillary force of the sintered powder.

Description

Heat pipe

Technical field

The utility model relates to a kind of heat pipe, relate in particular to a kind of heat pipe that utilizes heat pipe end to contact with pyrotoxin and dispel the heat, and the capillary structure of heat pipe is made of sintered powder and a plurality of groove that is formed on the heat pipe inner peripheral surface.

Background technology

Since characteristics such as heat pipe has that heat-transfer capability is strong, heat transfer rate is fast, heat conduction efficiency is high, in light weight, no mobile component, simple in structure and purposes are many and can transmit a large amount of hot and do not consume electric power, thereby the extensive welcome in the market that is subjected to dispelling the heat.

Fig. 1 is a kind of generalized section of known heat pipe capillary structure.As shown in the figure, heat pipe 1a is provided with capillary structure (wick structure) 11a that one deck forms by powder sintered (powder sintering) on body 10a internal face.Capillary structure 11a has capillarity, and the interior working fluid (working fluid, not shown) of body 10a that can be used for heat pipe 1a transmits under liquid state, and can produce good capillary force.But, because the capillary structure 11a that makes by sintered powder must place a plug 12a on making and avoid not as capillary structure 11a at the supporter of sintering process in the body 10a that the powder of sinter molding subsides.Therefore, thisly there is following shortcoming by the powder sintered capillary structure 11a that forms:

1. when plug 12a places in the body 10a of heat pipe 1a, owing between the two off-centre is caused in the center of be difficult for grasping plug 12a and body 10a inside, make the capillary structure 11a variable thickness that forms around knot, the transmission quantity of working fluid is inhomogeneous and cause hot transfer efficiency relatively poor.

2. after capillary structure 11a sintering is finished, powder can be attached on the plug 12a, cause plug 12a not to be drawn out easily, thereby because processing is difficult for, can't produce in a large number continuously, usually need be by personnel operation, also easy difference because of personnel's qualification makes the heat pipe 1a of manufacturing with low quality or unstable.

3. be not drawn out easily owing to plug 12a, therefore need apply certain external force, capillary structure 11a and body 10a are very soft because of the hardness of annealing, make the external force of executing when plug 12a is extracted easily influence and be out of shape, be out of shape and destroy easily the precision of capillary structure, tube body of heat pipe size.

The design people overcomes and solves the defective that exists in the above-mentioned prior art, through concentrating on studies and cooperating theoretical utilization, proposes a kind of reasonable in design and can effectively overcome the utility model of above-mentioned defective finally.

The content of utility model

Main purpose of the present utility model provides a kind of heat pipe, can solve heat pipe capillary structure uses plug in manufacturing engineering problem, transmission characteristic and the heat thereof of avoiding fabrication schedule to influence heat pipe capillary structure pass usefulness, simultaneously, can make the capillary structure of heat pipe have the good capillary force of sintered powder again.

To achieve these goals, the utility model provides a kind of heat pipe, comprise tube body of heat pipe and be located at capillary structure in the body, and capillary structure comprises that at least one is formed on the body inner peripheral surface and constitutes along axially extended groove of body and the sintered powder that sticks together at the body inner face.Because sintered powder only need stick together at the body inner face, so capillary structure need not use plug in sintering process, thereby realizes above-mentioned purpose.

Heat pipe of the present utility model has solved the problem that plug is inserted and extracted in the sintering process, avoids the problem in the processing such as capillary structure variable thickness, easy deformation or plug are not drawn out easily, and has good practicality.

Brief description of drawings

Fig. 1 is the generalized section of known heat pipe capillary structure;

Fig. 2 is the generalized section of the heat pipe of an embodiment of the utility model;

Fig. 3 is a heat pipe shown in Figure 2 cross-sectional view along the embodiment of cross section 3-3;

Fig. 4 is a heat pipe shown in Figure 2 cross-sectional view along another embodiment of cross section 3-3;

Fig. 5 is a heat pipe shown in Figure 2 cross-sectional view along the another embodiment of cross section 3-3;

Fig. 6 is the heat pipe user mode schematic diagram of an embodiment of the utility model;

Fig. 7 is the generalized section of the heat pipe of another embodiment of the utility model.

In the accompanying drawing, the list of parts of each label representative is as follows:

Heat pipe 1a

Body 10a capillary structure 11a

Plug 12a

Heat pipe 1

Body 10 top covers 11

Through hole 110 is filled pipe 111

Mouth-sealed portion 112 bottoms 12

Inner face 120 outer faces 121

Capillary structure 13 grooves 130

Sintered powder 131

Pyrotoxin 2

The specific embodiment

Below in conjunction with accompanying drawing feature of the present utility model and technology contents are elaborated, the only for reference and explanation usefulness of accompanying drawing is not to restriction of the present utility model.

Fig. 2 is the generalized section of the heat pipe of an embodiment of the utility model.As shown in the figure, the heat pipe that the utility model provides a kind of pipe end face to be heated, heat pipe 1 comprise a body 10, a top cover 11 and a bottom 12.Wherein:

Body 10 is the pipe shape, inner hollow, and have two ports.On port, bottom 12 is connected with the another port top cover 11 lid therein, thereby with two port closeds of body 10.Top cover 11 is provided with a through hole 110, passes on it to be provided with one and to fill pipe 111, fill pipe 111 also can with top cover 11 one-body molded (not shown)s.With an amount of working fluid (not shown) by filling after pipe 111 injects bodys 10 inside, again through as vacuumize wait procedure after, can carry out sealing step such as tin sticky or spot welding on the pipe 111 and form a mouth-sealed portion 112 filling, will fill and manage 111 and seal.Bottom 12 has an inner face 120 and an outer face 121.The inner face 120 of bottom 12 is adjacent with body 10, and outer face 121 can be a burnishing surface, is used for contacting with pyrotoxin 2 (as shown in Figure 6).So just formed the heat pipe 1 that end face is heated, the above-mentioned essential structure that is configured to heat pipe 1.

As shown in Figure 3, the utility model mainly is provided with capillary structure 13 in heat pipe 1 body 10 inside, and capillary structure 13 is made of with the sintered powder 131 that sticks together at body 10 inner faces 120 a plurality of being formed on body 10 inner peripheral surfaces and along body 10 axially extended grooves 130 at least.Groove 130 can be square (as shown in Figure 3) that inwardly concaves, trapezoidal (as shown in Figure 4) or pointed (as shown in Figure 5) etc.Because sintered powder 131 is microgranular before sintering not, therefore sintered powder 131 with the intersection of each groove 130 on have and be particulate sintered powder 131 and infiltrate in each grooves, form one, keep good capillarity and transmission characteristic between the two and make capillary structure 13 that each groove 130 and sintered powder 131 are binded.

Can obtain the heat pipe that the utility model pipe end face is heated by above-mentioned contexture.

As shown in Figure 6, in use, heat pipe 1 is placed on a pyrotoxin 2 tops, the inner face 120 of bottom 12 is contacted with pyrotoxin 2.When making the undergoing phase transition of working fluid of heat pipe 1 inside when pyrotoxin 2 generation heats, working fluid is met the heat vaporization and is also risen to heat pipe 1 upper end near top cover 11 positions, in case can revert to liquid phase through supercooling.Simultaneously,, make the working fluid that reverts to liquid phase be back to heat pipe 1 lower end near bottom 12 positions, thereby the repetitive cycling phase change realize the purpose that heat pipe 1 conducts heat by each groove 130 because each groove 130 extends axially along body 10.

Fig. 7 is the generalized section of the heat pipe of another embodiment of the utility model.The bottom 12 of heat pipe 1 is one-body molded with the another port of body 10, make each groove 130 may extend to body 10 inner faces, 120 places and form the curved arc shape, can increase the contact area of 131 of each groove 130 and sintered powders, thereby make liquid working fluid when refluxing, can be transferred to bottom 12 centers more swimmingly, guarantee the heat conductive efficiency of heat pipe 1.

Because the heat tube capillary structure that the utility model pipe end face is heated is the capillary structure 13 that is made of a plurality of grooves 130 and sintered powder 131, and each groove 130 is formed on body 10 inner peripheral surfaces of heat pipe 1, and sintered powder 131 sticks together on body 10 inner faces 120.Therefore, capillary structure 13 does not need to use plug in sintering process, has solved the problem that plug is inserted and extracted in the sintering process, avoids the problem in the processing such as capillary structure variable thickness, easy deformation or plug are not drawn out easily.

In sum, the heat pipe that pipe end face of the present utility model is heated can reach the application target of expection, has solved the problem of known technology simultaneously, has possessed practicality, novelty and creativeness, meet the requirement of utility application fully, now file an application according to Patent Law.

The above only is a preferred embodiment of the present utility model, is not the restriction to the utility model claim, and all equivalent structure transformations that utilizes specification of the present utility model and accompanying drawing content to be done all are included in the claim of the present utility model.

Claims

1. heat pipe comprises tube body of heat pipe and is located at capillary structure in the body, it is characterized in that, described capillary structure comprises that at least one is formed on the body inner face and along the axially extended groove of body with stick together sintered powder at the body inner face.

2. heat pipe according to claim 1 is characterized in that, described body has two ports, and on port, a bottom is connected with the another port therein for top cover lid, and described body inner face is formed on the described bottom.

3. heat pipe according to claim 2 is characterized in that, described top cover is provided with one and fills pipe.

4. according to claim 3 a described heat pipe, it is characterized in that described filling pipe and described top cover are one-body molded.

5. according to claim 3 or 4 described heat pipes, it is characterized in that, form a mouth-sealed portion on the described filling pipe.

6. heat pipe according to claim 2 is characterized in that, described bottom has one and is the outer face of burnishing surface.

7. heat pipe according to claim 2 is characterized in that the port of described bottom and body is one-body molded.

8. heat pipe according to claim 7 is characterized in that, described each groove extends to described body inner face place and forms the curved arc shape.

9. heat pipe according to claim 1 is characterized in that, described each groove be shaped as inwardly concave square.

10. heat pipe according to claim 1 is characterized in that, described each groove be shaped as inwardly concave trapezoidal.

11, heat pipe according to claim 1 is characterized in that, described each groove be shaped as inwardly concave pointed.

12, heat pipe according to claim 1 is characterized in that, bind and the formation one intersection of described each groove and described sintered powder.