CN1804532A

CN1804532A - Heat pipe

Info

Publication number: CN1804532A
Application number: CN 200510004008
Authority: CN
Inventors: 刘英杰
Original assignee: YUCHENG CHEMICAL CO Ltd
Current assignee: YUCHENG CHEMICAL CO Ltd
Priority date: 2005-01-11
Filing date: 2005-01-11
Publication date: 2006-07-19

Abstract

Disclosed is a heat pipe comprising an outer casing, an inner core and a working fluid arranged inside the outer casing, the inner core is provided with a plurality of first particles and a plurality of second particles clinkered together and arranged on the inner wall of the outer casing, the first particles are made of copper, the second particles are made of Ag, Bi, Sn or their alloys, the inner core is also provided with a net.

Description

Heat pipe

Technical field

The present invention is relevant with heat-transfer device, is meant a kind of heat pipe especially, and its production process is easy, can effectively reduce cost and shortens man-hour.

Background technology

Existing heat pipe is made up of with a working fluid such as water a body, a core heart, this body generally adopts copper or copper alloy to make, this core heart is then formed and is located at the inwall of this body by the copper powder sintering, owing to leave the slit between the copper powder, working fluid can utilize capillarity to flow in core in the heart, reaches heat conducting effect.

Because the fusing point of copper is up to 1083 ℃, so generally need temperature is risen to 900 ℃-1000 ℃ manufacturing cost height and time-consuming not only during sintered copper powder.

Summary of the invention

Main purpose of the present invention is to provide a kind of heat pipe, and its production process is easy, can effectively reduce cost and shortens man-hour.

Take off purpose for before reaching, heat pipe provided by the present invention is to include a shell, a core heart and a working fluid to be located in this enclosure, this core heart has some first particulates and some second particulate sintering together and be located at this outer casing inner wall, these first particulates come down to be made of copper, these second particulates then in fact by silver, bismuth, plug with molten metal, tin or its alloy be made.

Description of drawings

Fig. 1 is the stereogram of a preferred embodiment of the present invention;

Fig. 2 is the cutaway view of Fig. 1 along the 2-2 direction.

The specific embodiment

In order to describe structure of the present invention and characteristics place in detail, lift now with next preferred embodiment and conjunction with figs. explanation as back:

See also Fig. 1,2, the heat pipe 10 that a preferred embodiment of the present invention provided is to include a shell 20, an intermediate layer 30, a core heart 40, a dictyosome 50 and a working fluid 60.

This shell 20 is in a tubular form, and is made by metal material such as copper or its alloy such as Kufil, its inner hollow and have a room 22, and these shell 20 inwalls are provided with an intermediate layer 30, a core heart 40 and a dictyosome 50 in regular turn.

This intermediate layer 30 is silver is plated on these shell 20 inwalls and forms, these intermediate layer 30 integral body in a tubular form, during actual the manufacturing this intermediate layer also can adopt bismuth, plug with molten metal, tin or its alloy.

This core heart 40 has some first particulates 41 and combines with sintering processing with some second particulates 42, these core heart 40 integral body in a tubular form, these first particulates 41 come down to be made by copper or its alloy, 42 of these second particulates are made by silver or its alloy in fact, in fact, this second particulate 42 can adopt silver, bismuth, plugs with molten metal, tin or its alloy, and the particle diameter of these particulates is between 0.01 μ m-15 μ m.

This dictyosome 50 is to be located at this core heart 40 inner edges, and this dictyosome 50 is to be made and in a tubular form, its mesh size can be between between the 100# to 325# by the alloy of Cu, Ag and P.

This working fluid 60 is pure water or other solution, is to be located in this shell 20 inside, can borrow capillarity to be adsorbed in the slit in this core heart 40 and this dictyosome 50.

Because silver point is 960.5 ℃, therefore, these first particulates 41 and these second particulates 42 are mixed when carrying out sintering, only need be heated to about 700 ℃-900 ℃, these second particulates 42 can combine these first particulates 41, the similar sticker of these second particulate, 42 roles.In addition, the silver composition also can reduce the fusing point of this dictyosome 50, easier and this dictyosome 50 combine when making these core heart 40 sintering, then play the part of the role of sticker as for the silver in this intermediate layer 30, and this core heart 40 can (700 ℃-900 ℃) be combined under low temperature with this shell 20.

In other words, owing to contain second particulate 42 such as grade of a predetermined quantity in this core heart 40, can reduce the operating temperature of sintering, the silver in this intermediate layer 30 can be in the core heart 40 and shell 20 are firmly combined, the dictyosome 50 of argentiferous also can be in firmly combining with this core heart 40 below 900 ℃, whereby, heat pipe provided by the present invention can be made with lower operating temperature and finish, not only procedure is comparatively easy, more can save the time and the cost that heat up with cooling, even can save the required time of sintering, really can improve the disappearance of existing heat pipe, thereby reach purpose of the present invention.

According to spirit of the present invention, this intermediate layer 30 can be established according to need and not, the core heart 40 that contains second particulate 42 itself can combine in lower temperature (700 ℃-900 ℃) and shell 20, and this dictyosome 50 can be promoted the flowability and the capillary moving of working fluid 60, so also can establish according to need and not.

In addition, the fusing point of bismuth is 271.3 ℃, the fusing point of tin is 231.8 ℃, the fusing point of pluging with molten metal is 156.6 ℃, all 1083 ℃ of fusing points than copper are low, can replace the role of silver in the core heart or intermediate layer, further reduce the operating temperature of sintering, also the purpose of attainable cost invention then can make the chemical property of dictyosome stable as for phosphorus composition; A coating can be established in these dictyosome 50 surfaces, and this coating can adopt bismuth, plugs with molten metal, tin or its alloy are made, with so that this dictyosome 50 and this core heart 40 are easier combines under low temperature.

Claims

1. a heat pipe is characterized in that, includes:

One shell;

The one core heart has some first particulates and some second particulate sintering together and be located at this outer casing inner wall, and these first particulates come down to be made of copper, these second particulates then in fact by silver, bismuth, plug with molten metal, tin or its alloy be made; And

One working fluid is located in this enclosure.

2. heat pipe as claimed in claim 1 is characterized in that, wherein the particle diameter of these second particulates is between 0.01 μ m-15 μ m.

3. heat pipe as claimed in claim 1 is characterized in that, more includes an intermediate layer and is located between this outer casing inner wall and this core heart, and this intermediate layer comes down to by silver, bismuth, plugs with molten metal, tin or its alloy are made.

4. heat pipe as claimed in claim 1 is characterized in that, wherein this core heart is in a tubular form, and this heat pipe more includes a dictyosome and is located at the intracardiac edge of this core.

5. heat pipe as claimed in claim 4 is characterized in that, wherein the mesh size of this dictyosome is between the 325# (mesh) between 100# (mesh).

6. heat pipe as claimed in claim 4 is characterized in that, wherein this dictyosome comes down to be made by the alloy of Cu, Ag and P.

7. heat pipe as claimed in claim 4 is characterized in that wherein this dictyosome more is provided with a coating, and this coating comes down to by bismuth, plugs with molten metal, tin or its alloy are made.

8. heat pipe as claimed in claim 1 is characterized in that wherein this shell comes down to by copper or Kufil made.