JPS5849488Y2 - hollow heat pipe - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a hollow heat pipe.
This hollow heat pipe aims to significantly improve its characteristics by improving the wick structure of the hollow heat pipe.

Generally, heat pipes used for connecting heat pipes and transporting liquid have an inner tube and an outer tube, and after providing a wick on the outer wall of the inner tube and the inner wall of the outer tube, an appropriate amount of working fluid is sealed. A heat pipe with a hollow structure is used.

However, although the hollow heat pipe with this structure has characteristics commensurate with its structure, the wicks between the inner tube and the outer tube are independent, so for example, cooling can only be done by the inner tube or the outer tube. If this happens, the condensate will become uneven, and
The reality is that they cannot exhibit sufficiently good characteristics.

Conventionally, the following methods have been adopted to solve this problem.

That is, as shown in FIG. 1, between the wick 2 provided on the outer wall of the inner tube 1 and the wick 4 provided on the inner wall of the outer tube 3, a desired number of tooth-shaped wicks 5 are provided in close contact with the wicks 2 and 4. Accordingly, a method is adopted in which the wick 2 on the inner tube and the wick 4 in the outer tube are connected.

In this method, the wick 2 on the inner tube and the wick 4 in the outer tube are certainly connected and exhibit good characteristics, but each disc-shaped wick 5 blocks the steam when the steam moves from one end to the other. Therefore, it can only operate as a heat pipe between disks, so a plurality of heat pipes are connected in series, and the heat pipe itself has no choice but to have a large thermal resistance.

The present invention solves these drawbacks all at once by providing a wick wound helically between the inner tube and the outer tube, so that the inner tube and the outer tube are connected by the wound wick. In addition, the space outside the wick between the inner tube and the outer tube is continuous in a helical shape, and the steam passage is not blocked, so the heat pipe exhibits its original excellent characteristics. The present invention aims to provide a hollow heat pipe.

Hereinafter, the present invention will be explained in detail based on the embodiment shown in FIG.

In Fig. 2, 1-1 indicates the inner tube, 3-1 indicates the outer tube,
6-1 shows a wick wound helically around the inner tube and the outer tube, respectively.

In the above embodiments, the shape of the hollow heat pipe is cylindrical, but as shown in FIG. It can be of any shape depending on the purpose.

In addition, wicks that are wound in a helical shape are made by twisting thin metal wires together, braided wire, rolled mesh, etc.
Furthermore, a carbon tow is suitable, and its shape is not limited to a round shape, but a hollow tubular shape with a spring interposed therebetween and a muik provided therein may also be used.

Next, regarding the number of wicks wound helically, one thread was described in this embodiment, but the number may be two or more as needed.

In this example, copper was used for the inner tube and outer tube, braided wire was used for the helical wick, and when an appropriate amount of hydraulic fluid was sealed in each, each exhibited very good characteristics. .

As explained above, the present invention makes it possible to provide a hollow heat pipe with excellent characteristics, and since the wick between the inner tube and the outer tube is formed by winding it in a helical shape, the manufacturing method is simple. Since it can be easily done with a winding machine, its economical effects are great.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional hollow heat pipe, Fig. 2 is a cross-sectional view showing an embodiment of the hollow heat pipe according to the present invention, and Fig. 3 is a cross-sectional view of the hollow heat pipe. FIG. 1-1...Inner pipe, 3-1...Outer pipe, 5
...Disc wick, 6-1...Helical wick.

Claims (2)

[Scope of utility model registration request] (1) A hollow heat pipe characterized in that a wick is wound helically between an inner tube and an outer tube, and then an appropriate amount of working fluid is sealed. (2) The hollow heat pipe according to item 1 of the scope of the Utility Model Registration Application, characterized in that a wick is formed in a helical manner by circumscribing and inscribing the outer wall of the inner tube and the inner wall of the outer tube, respectively.