JPS6189492A - Heat pipe embedded type sandwich panel - Google Patents

Abstract

PURPOSE:To make uniform the temperature distribution on the full surface of the panel and to lighten the weight of the panel by providing in parallel a plurality of branched type heat pipes each having a horizontal heat pipe at a suitable portion of a straight heat pipe. CONSTITUTION:Respective branched type heat pipes 6 are formed by connecting a plurality of straight heat pipes 1 to each other by means of cross type heat pipe joints 7. Therefore, horizontal parts of the heat pipe joints 7 of the adjacent branch type heat pipes 6 are successively superimposed on each other so as perform the role or horizontal heat pipes. Therefore, it is possible to make uniform the temperature distribution of the full surface of the panel 31. Further, in the heat pipe joints 7 and the straight pipes 1, there is produced no deterioration in the thermal characteristic due to damage of wicks in the inner parts of the pipes accompanied by the bending work. Still further, the weight of the horizontal part of each heat pipe joint 7 affords a sufficient contact area, and the panel weight can be reduced inspite of the sufficient performance.

Description

[Detailed Description of the Invention] [Field of Commercial Application] The present invention is directed to a heat pipe that can maintain the hot water temperature of an utterance (J) optimally at EI#, which is mounted on a panel, mainly for use in artificial heating. Relating to recessed sandwich panels.

[Conventional technology]

A heat pipe panel according to the present invention is shown in FIG. The heat pipe panel 11 shown in FIG. 3 has straight heat pipes 1 disposed intersectingly in the horizontal direction between the upper and lower surface plates 4, and is further filled with cores 5. A heat generating device 3 is provided at each location. Here, the reason why the straight heat pipes l are arranged in an intersecting manner is to make the temperature distribution over the entire surface of the panel 11 uniform.

However, according to this conventional example, since the heat pipes l are overlapped in an intersecting manner, the panel thickness becomes large, which deteriorates heat conduction in the panel thickness direction, and increases heat conduction in the panel thickness direction. There was a problem in that when the number of heat pipes L was increased, the number of plates increased.

Another example is the panel 21 shown in FIG. In this panel 21, curved heat pipes 2 having appropriate horizontal straight pipe portions are arranged between vertical straight heat pipes 1 without intersecting each other.

[Problems to be solved]

According to the above-mentioned other conventional example, the problems of the above-mentioned conventional example can be solved because the pipes do not intersect, but it is difficult to manufacture the curved heat pipe 2, and the bending process may cause quick breakage inside the pipe. , thermal properties may deteriorate. Roughly curved heat pipe 2 and straight heat pipe 1tl
- In order to bond firmly thermally, it is necessary to reduce the contact area between the two, which causes the problem that the joint becomes longer and the panel 3tfl! increases.

[Means for solving problems]

The present invention solves the above-mentioned problems, and includes a plurality of branched heat pipes each having a horizontal heat pipe of a predetermined length at an appropriate location of the straight heat pipe between the upper and lower surface plates. The lateral heat pipes of the branched heat pipe are arranged so as to overlap and contact each other.

C Example] Next, an example thereof will be explained with reference to FIGS. 1 and 2.

FIG. 1 (AAf!; rF-1) is a plan view and a front view of an embodiment of a heat pipe embedded sandwich panel according to the present invention, and FIG. 2 is a cross-sectional view of a heat pipe joint,
In each figure, the same parts as in FIGS. 1 and 2 are given the same reference numerals, and their explanations will be omitted.

In the figure, heat pipe embedded sandwich ζ channel 31
is used, for example, in the heat sink of an artificial satellite, and is placed between the upper and lower surface plates 4? ] Three vertically branched heat vibros are installed.

Each branch type heat vibro consists of multiple straight heat pipes
are connected through a cross-shaped heat pipe joint 7 (see FIG. 2) IC. Therefore, as shown in FIG. 1(A), the lateral portions of the heat pipe joints 7 of the adjacent branched heat nozzles 6 are sequentially overlapped and serve as lateral heat pipes, and the entire surface of the nozzle 3 is It is possible to make the temperature distribution uniform.

Furthermore, the straight heat pipe 1 and the standardized heat nozzle/pipe joint 7 are easy to manufacture, and do not cause deterioration of thermal characteristics due to wick breakage inside the pipe due to bending. By overlapping the vertical portions of the heat pipe joints 7, a sufficient contact area can be obtained, and the weight of the panel can be reduced while providing sufficient performance.

There is also the advantage that heat transfer characteristics can be improved by using a branched heat pipe in which the shape of the heat pipe joint 7 is T-shaped, Y-shaped, etc. depending on the mounting of equipment on the panel surface.

The branch type heat vibro is a straight heat pipe.

In addition to the combination of l and joint 7, it is also possible to use an integral structure in which a horizontal pipe part is integrally provided in the middle of the straight pipe part 9. This makes it even easier to make the back part and reduces the need for both hooks. can.

〔Effect of the invention〕

As explained above, the present invention provides a structure in which branched heat pipes having lateral heat pipes at appropriate locations of straight pipes and straight pipes are arranged in parallel between the upper and lower panels, and adjacent branched heat pipes are arranged in parallel. Since the heat pipes in the Hiiragi direction are brought into contact with each other in an overlapping manner, the heat pipes extend both vertically and horizontally, making it possible to equalize the temperature distribution over the entire panel surface. It is easy to manufacture, the weight can be reduced, and there is no deterioration in thermal properties due to bending of the pipe.

[Brief explanation of drawings]

FIG. 1 (4) and CB+ are respectively a plan view and a front view of an embodiment of the heat pipe embedded type sandwich panel according to the present invention, FIG. 2 is a sectional view of a heat pipe joint, and FIGS. 3 and 4. 1A and 1B are perspective views of various examples of conventional sandwich panels with embedded heat pipes.

Claims (1)

[Claims] A plurality of branched heat pipes having horizontal heat pipes of a predetermined length are arranged in parallel between the upper and lower surface plates, each having a horizontal heat pipe of a predetermined length at an appropriate position of each straight heat pipe, and the horizontal heat pipes of adjacent branched heat pipes are connected to each other. A sandwich panel with embedded heat pipes, characterized in that the heat pipes are configured to have overlapping contact.