CN201122068Y

CN201122068Y - Heat pipe structure with double-layer capillary organization

Info

Publication number: CN201122068Y
Application number: CNU2007201762169U
Authority: CN
Inventors: 陈仁辉; 黄友泰; 许智颖; 罗子杰; 詹耀程
Original assignee: SHUANGHONG SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: SHUANGHONG SCIENCE AND TECHNOLOGY Co Ltd; Auras Technology Co Ltd
Priority date: 2007-09-03
Filing date: 2007-09-03
Publication date: 2008-09-24
Anticipated expiration: 2017-09-03

Abstract

The utility model relates to a thermotube structure with double capillary organizations, which consists of a tube body and a second capillary organization, wherein, a groove-shaped first capillary organization is arranged on the inner wall of the tube body, and the length of the first capillary organization is no larger than half of the length of the tube body. In addition, a smooth surface is formed on the wall surface on one side of the first capillary organization. The second capillary organization is arranged on the surface of the smooth surface by metal powder to form a configuration corresponding to the first capillary organization. The length of the second capillary organization is no larger than half of the length of the tube body. By dint of the second capillary organization, the heated end of the thermotube has an excellent water-retaining effect; moreover, the first capillary organization also enables the recondensed fluid on the cooling end to flow back to the heated end rapidly.

Description

Heat pipe structure with dual capillary structure

Technical field

The utility model relates to a kind of heat pipe, relates in particular to a kind of combined type heat pipe structure.

Background technology

The radiating efficiency of heat pipe is much larger than the radiating efficiency of traditional radiating mode (as fan or radiating fin).Yet electronic product speed now is more and more faster, the heat that is produced is also more and more higher, and heat pipe does not need driving force, does not take up space, noiselessness and high advantages such as rate of heat dissipation are arranged, and therefore becomes the splendid selection of industry, so the application of heat pipe is also therefore increasingly extensive.

Heat pipe is when using at present, the heating end of heat pipe is attached at the surface of electronic building brick or heat-conducting block, and the working fluid of heating end inside absorbs heat, makes the working fluid vaporization, allow the air pressure of heating end increase gradually, the water vapour of evaporation is flowed to form vapor stream to the low colling end of pressure.Steam is after the colling end release heat, and regelation becomes liquid, and is back to heating end rapidly by capillary structure.Can rapidly the heat energy that electronic building brick produced be removed down flowing of working fluid cycles.

Yet, the working fluid cycles ground of inside heat pipe is flowed, be because by capillary texture in heat pipe.Present employed capillary structure can be divided into plough groove type, net like or metal powder sintered.After the working fluid of the heating end inside of heat pipe flow to the colling end release heat because of the water vapour of heat absorption evaporation, and regelation forms liquid, and the capillary structure by channel form is back to heating end fast again.Though the capillary structure of plough groove type can be back to heating end by colling end fast by liquid, the capillary structure of plough groove type dwindles the zone or the area of heating end heat absorption at backwater (condensing) weak effect of heating end.In addition, the formed capillary structure of net like or metal dust has good backwater effect on heating end, and bigger heat absorption zone or area are arranged, and allows heating end can absorb more heat energy.But flow to the colling end release heat and again behind the coagulating liq at the water vapour of evaporation, it is slower that the formed capillary structure of net like or metal dust makes the liquid of regelation be back to the speed of heating end, and influence radiating efficiency.

The utility model content

Main purpose of the present utility model, be to propose a kind of heat pipe structure of combined type, this combined type heat pipe structure system utilizes two kinds of different capillary structures, makes the heating end of this heat pipe have good backwater effect, and also can be back to heating end fast at the liquid of colling end regelation.

In order to achieve the above object, the heat pipe structure of dual capillary structure of the present utility model, comprise: body, have colling end and heating end on it, its inwall is provided with first capillary structure of corresponding colling end and the even surface of corresponding heating end, and the length of described first capillary structure is to be not more than half of described body length; Second capillary structure is located on the surface of described even surface, and the length of described second capillary structure is not more than half of length of described body.

The heat pipe structure with dual capillary structure that provides according to the utility model, owing to have two kinds of different capillary structures, thereby the heating end of this heat pipe has good backwater effect, and also can be back to heating end fast at the liquid of colling end regelation.

Description of drawings

Fig. 1 is the heat pipe side cross-sectional schematic with dual capillary structure of the present utility model;

Fig. 2 is the section cross-sectional schematic of heat pipe shown in Figure 1 along the 2-2 place;

Fig. 3 is the section cross-sectional schematic of heat pipe shown in Figure 1 along the 3-3 place;

Fig. 4 is the heat pipe bending cross-sectional schematic of dual capillary structure of the present utility model;

Fig. 5 is the inside heat pipe working fluid flow side cross-sectional schematic of dual capillary structure of the present utility model.

[primary clustering symbol description]

Body 1

First capillary structure 11

Strip shape body 111

Groove 112

Even surface 12

Colling end 13

Heating end 14

Second capillary structure 2

Particle 21

Finedraw 22

Water vapour 3

Liquid 4

The specific embodiment

Below in conjunction with accompanying drawing technology contents of the present utility model is elaborated.

The heat pipe side that Fig. 1,2,3 is respectively dual capillary structure of the present utility model is analysed and observe and Fig. 1 analyses and observe the section cross-sectional schematic in the 3-3 position with Fig. 1 at the section of 2-2 position.As shown in the figure: the heat pipe structure of dual capillary structure of the present utility model, this heat pipe comprises: the body 1 and second capillary structure 2.Wherein:

Body 1 is the circular hollow column of being made by metal material.Body 1 inwall is provided with first capillary structure 11.First capillary structure 11 is formed by a plurality of square strip shape body 111 on the inwall of being located at body 1, forms groove 112 between per two strip shape bodies 111.The length of first capillary structure 11 is not more than half of body 1 length.Other forms even surface 12 in the wall of first capillary structure, 11 1 sides of body 1.

Second capillary structure 2 is made of metal powder sintered particle 21, through after the heat-agglomerating, metal dust is cemented on the surface of even surface 12, forms the configuration corresponding with first capillary structure 11.In the present embodiment, set second capillary structure, 3 length are not more than half of body 1 length, as shown in Figure 1.

When first capillary structure 11 of above-mentioned body 1 inside and second capillary structure 12 complete, body 1 is inner inject working fluid after, with body 1 two ends sealed knot, leak again to avoid working fluid.

Figure 4 and 5 are respectively the heat pipe bending of dual capillary structure of the present utility model and analyse and observe and internal work fluid flow side cross-sectional schematic.As shown in the figure: when heat pipe in use, the body 1 according to heat pipe institute decorating position bending heat pipe makes this body 1 be bent into a polymorph, for example L shaped body, and these body 1 one ends are set at colling end 13, the other end is a heating end 14.These colling end 13 inside are first capillary structure 11, and heating end 14 inside are second capillary structure 2.

When the heating end 14 of heat pipe is attached to electronic building brick (not shown) or heat-conducting block (not shown) surface, the working fluid that second capillary structure 2 of heating end 14 inside is condensed absorbs heat, this working fluid vaporization, allow the air pressure of heating end 14 increase gradually, the water vapour 3 of evaporation can be flowed to form vapor stream to the low colling end 13 of pressure.Water vapour 3 condenses into liquid 4 again after colling end 13 release heat, and is back to heating end 14 rapidly by first capillary structure 2.The liquid 4 that refluxes can condense in the finedraw 22 of whole second capillary structure 2, thereby increases the endotherm area of heating end 14, and promotes heat absorption speed.

The foregoing description only supplies the usefulness of explanation the utility model, and is not to restriction of the present utility model.Those skilled in the art are under the prerequisite that does not break away from spirit and scope of the present utility model, and the various equivalent structures of being made change all within scope of the present utility model.Protection domain of the present utility model is defined by the claims.

Claims

1. the heat pipe structure of a dual capillary structure is characterized in that, comprising:

Body has colling end and heating end on it, its inwall is provided with first capillary structure of corresponding colling end and the even surface of corresponding heating end, and the length of described first capillary structure is to be not more than half of described body length;

Second capillary structure is located on the surface of described even surface, and the length of described second capillary structure is not more than half of length of described body.

2. the heat pipe structure with dual capillary structure as claimed in claim 1 is characterized in that, described body is circular hollow column.

3. the heat pipe structure with dual capillary structure as claimed in claim 1 is characterized in that, described first capillary structure is formed by a plurality of square strip shape body of being located on the described inboard wall of tube body, and forms groove between per two described strip shape bodies.

4. the heat pipe structure with dual capillary structure as claimed in claim 1 is characterized in that, described second capillary structure is made of metal powder sintered particle.