JP3110111U - Heat conduit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat conduit capable of simplifying manufacture, reducing cost and shortening working time.
An outer shell 20 is provided. The core portion 40 is formed by sintering some of the first microparticles 41 and the second microparticles 42 and is provided on the inner wall of the outer shell 20. The fluid 60 is provided inside the outer shell 20. An intermediate layer 30 is provided between the inner wall of the outer shell 20 and the core portion 40. The core part 40 has a pipe shape and has a net 50 at the inner edge. The net 50 has a coating layer. Since the heat conduit 10 is manufactured at a relatively low working temperature, the processing process is simplified, the time for raising and lowering the temperature can be saved, the cost can be reduced, and the sintering takes place. It is also possible to save time.
[Selection] Figure 2

Description

  The present invention relates to a heat transfer device, and more particularly, to a heat conduit that can simplify manufacturing, reduce costs, and reduce working time.

Known heat conduits are comprised of a pipe, a core, and a fluid (eg, water). Pipes are usually manufactured from copper or a copper alloy, and the core is formed by sintering copper powder, provided on the inner wall of the pipe, and there is a gap between the copper powder, so that the fluid is cored by capillary action. By flowing in the part, it is possible to achieve the effect of heat conduction.
Since the melting point of copper reaches 1083 ° C., it is necessary to raise the temperature from 900 ° C. to 1000 ° C. in order to sinter the copper powder. Therefore, the cost is high and time is required.

  The main object of the present invention is to provide a heat conduit that can simplify manufacturing, reduce costs, and reduce working time.

  In order to achieve the above-mentioned object, a heat conduit according to the present invention includes a shell, a core, and a fluid provided inside the shell. The core is formed by sintering some of the first and second microparticles, and is provided on the inner wall of the outer shell. Made from tin or its alloys.

The structure and features of the present invention will be described below with reference to embodiments and drawings.
FIG. 1 is a perspective view of an embodiment of the present invention.
2 is a cross-sectional view of FIG. 1 taken along line 2-2.

As shown in FIGS. 1 and 2, a heat conduit 10 according to an embodiment of the present invention includes an outer shell 20, an intermediate layer 30, a core 40, a net 50, and a fluid 60.
The outer shell 20 has a pipe shape, is made of a metal material such as copper or an alloy thereof (for example, a copper-silver alloy), has a hollow storage chamber 22 therein, and has an intermediate layer on the inner wall of the outer shell 20. 30, a core 40, and a net 50 are provided in this order.

  The intermediate layer 30 is formed on the inner wall of the outer shell 20 by silver plating, and the entire intermediate layer 30 has a pipe shape. Indeed, it is also possible to make the intermediate layer from Bisman, indium, tin or alloys thereof.

  The core portion 40 is formed by sintering some of the first microparticles 41 and the second microparticles 42. The entire core portion 40 has a pipe shape, and the first microparticles 41 are made of copper or an alloy thereof. The second microparticles 42 are made from silver or an alloy thereof. Indeed, it is possible to make the second microparticles 42 from silver, bisman, indium, tin or alloys thereof. These fine particles have a diameter of 0.01 μm to 15 μm.

The mesh body 50 is provided at the inner edge of the core portion 40, is made of an alloy of copper, silver, and phosphorus and has a pipe shape, and the mesh size is between 100 # (mesh) and 325 # (mesh). It is.
The fluid 60 is composed of pure water or other solution, is provided inside the outer shell 20, and can adhere to the gap between the core portion 40 and the net 50 by capillary action.

  Since the melting point of silver is 960.5 ° C., when the first fine particles 41 and the second fine particles 42 are mixed and sintered, the second fine particles 42 and the first fine particles 42 and the first fine particles 42 are heated by heating from 700 ° C. to 900 ° C. It is possible to bind the microparticles 41. At this time, the second microparticles 42 serve as an adhesive. Further, since the silver component can lower the melting point of the mesh body 50, when the core portion 40 is sintered, it becomes easy to bond to the mesh body 50. Further, since the silver component of the intermediate layer 30 plays the role of an adhesive, it is possible to bond the core portion 40 and the outer shell 20 at a low temperature (700 ° C. to 900 ° C.).

  In other words, since the core part 40 contains a certain number of second microparticles 42, the temperature of the sintering operation can be lowered. Further, the silver component of the intermediate layer 30 can be closely bonded to the core portion 40 and the outer shell 20 at 900 ° C. or lower. In addition, the net 50 containing a silver component can be closely bonded to the core 40 at 900 ° C. or lower. Therefore, since the heat conduit according to the present embodiment is manufactured at a relatively low working temperature, it not only simplifies the processing process, but also saves the time for raising and lowering the temperature and reduces the cost. Is possible. In addition, since it is possible to save the time required for sintering, the drawbacks of known heat conduits are reliably improved and the object of the present invention is achieved.

  Further, it is possible not to provide the intermediate layer 30 as necessary. Further, the core 40 itself containing the second microparticles 42 can be bonded to the outer shell 20 at a relatively low temperature (700 ° C. to 900 ° C.), and the net 50 has the fluidity of the fluid 60 and the capillary. Since it is possible to increase exercise, it may not be provided as necessary.

  Bisman has a melting point of 271.3 ° C., tin has a melting point of 231.8 ° C., and indium has a melting point of 156.6 ° C. Since both of them are lower than the melting point of copper 1083 ° C., it can replace the silver of the core or intermediate layer and lower the temperature of the sintering operation to achieve the object of the present invention. In addition, the phosphorus component can stabilize the chemical properties of the network. It is also possible to provide a coating layer on the surface of the net 50. Since the coating layer is made of Bisman, indium, tin, or an alloy thereof, the mesh body 50 and the core portion 40 can be easily bonded at a low temperature.

1 is a perspective view showing a heat conduit according to an embodiment of the present invention. It is sectional drawing which cut | disconnected FIG. 1 by the 2-2 line.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Heat conduit | pipe, 20 outer shell, 22 storage chamber, 30 intermediate | middle layer, 40 core part, 41 1st microparticle, 42 2nd microparticle, 50 network, 60 fluid

Claims (8)

The outer shell,
Formed by sintering of the first and second microparticles, provided on the inner wall of the outer shell, the first microparticles are made from copper, and the second microparticles are silver, Bisman, indium, tin or alloys thereof A core made from
A fluid provided inside the outer shell;
A heat conduit comprising:   The heat conduit according to claim 1, wherein the second microparticle has a diameter of between 0.01 μm and 15 μm.   The heat conduit according to claim 1, further comprising an intermediate layer between the inner wall of the outer shell and the core, wherein the intermediate layer is made of silver, Bisman, indium, tin or an alloy thereof.   The heat conduit according to claim 1, wherein the core portion has a pipe shape and has a net body at an inner edge of the core portion.   The heat conduit according to claim 4, wherein the mesh body has a mesh size between 100 # (mesh) and 325 # (mesh).   5. The heat conduit according to claim 4, wherein the net is made of an alloy of copper, silver and phosphorus.   5. The heat conduit according to claim 4, wherein the mesh body has a coating layer, and the coating layer is made of Bisman, indium, tin, or an alloy thereof.   2. A heat conduit according to claim 1, wherein the outer shell is made of copper or a copper silver alloy.

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