JPS587160B2 - Heat pipe element and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a heat pipe element used in, for example, a tube bank heat exchanger and its structure.

In general, a tube group heat exchanger using heat pipes has a partition wall 2 that partitions the inside of a case 1 of the heat exchanger, as shown in FIG.
A large number of heat pipes 3, 3,...
A low-temperature fluid is flowed into the upper chamber 1A divided by the partition wall 2, and a high-temperature fluid is flowed into the lower chamber 1B, and the high temperature of the high-temperature liquid is transferred to the heat pipe 3. The working fluid 4 inside is evaporated on the high temperature side of the lower part and condensed on the low temperature side of the upper part, thereby transmitting heat from the bottom to the top and warming the low temperature fluid.

The heat pipe element used in this type of heat exchanger is
Since the pipe is manufactured by purifying the inside of the pipe, vacuum suction is applied, and the working fluid is enclosed and sealed, the number of steps required for manufacturing has little to do with the length of the pipe. Many straight heat pipes 3, 3,...
When using .

The present invention solves the above-mentioned problems by bending a single long pipe into a serpentine or spiral shape and distributing the working fluid within each bend at the bottom, without using a large number of heat pipes. At the same time, each bent portion of the upper portion is sealed by crushing or other means to form a large number of independent tube groups.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 2, a long pipe 6 is bent into a continuous U-shaped serpentine tube and held in a vertical position by a partition plate 2 in a case 1.

Next, the air inside the pipe 6 is evacuated, the working fluid 7 is filled, and both ends of the pipe 6 are sealed.

The hydraulic fluid T filled in the pipe 6 is transferred to each lower bent portion 6.
Distribute evenly among A, 6A, ....

Next, each of the upper bent portions 6B, 6B, . .

The processing order is not limited to the above.
B, 6B, . . . , a sealed heat pipe 6 may be attached to the partition plate 2.

In addition, each lower bent part 6A of the serpentine pipe 6,
In order to evenly distribute the working fluid 7 in the chambers 6A, -..., after deaerating and sealing both ends, place the hydraulic fluid 7 in the form of a serpentine tube in a high constant temperature bath 8 at a constant temperature, as shown in Figure 3. The pipe 6 is inserted so that its lower bent portions 6A, 6A, . . . By cooling the parts with a uniform airflow, the amount of working fluid in the lower bent parts 6B, 6B, . . . can be equally distributed.

In the present invention, if the upper bent portions 6B, 6B, . Since the steam pressure is higher than that of the portion located on the outlet side, that is, the steam pressure is greater than that of the portion located on the outlet side, each of the lower bent portions 6A, 6A, . . .
Inconsistencies occur in the amount of hydraulic fluid filled in the pump, and in extreme cases, there are parts where the hydraulic fluid runs out, which in either case causes a decline in performance.

However, in the present invention, as described above, since the upper part of the pipe 6 is sealed at each bent part 6B, 6B, . Thermal performance can be obtained.

In addition, in the embodiment, an example in which the heat pipe is formed into a non-linear shape is explained, but it may be bent as shown in Fig. 4, or it may be formed into a spiral shape. Good too.

The point is that by providing the bends, a substantially large number of parallel sections are formed and each bend is sealed.

Further, a porous pipe may be attached inside the heat pipe.

By providing the heat pipe inside, the heat pipe can be used in a horizontal position.

Further, when the heat pipe is sealed at each bend, the amount of working fluid sealed in each isolated space of the heat pipe does not necessarily have to be equal.

If there is a difference in the amount of heat between parts, the amount of hydraulic fluid sealed in each isolated part can be changed to suit the purpose of use.

In addition to the use of the present invention as a heat exchanger for heating and cooling, it can also be used as a radiator, a cooler, etc., for example, in electronic equipment (I.C.
package) can be used as a cooler.

According to the present invention, since it is obtained by processing a single heat pipe, it is possible to provide various types of equipment that are easy to manufacture and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a tube group heat exchanger using a large number of straight heat pipes, and FIG. 2 is a longitudinal sectional view of a heat exchanger using the heat pipe element of the present invention. FIG. 3 is a schematic diagram showing one embodiment of a method for evenly distributing the working fluid to each bent portion at the bottom of a serpentine heat pipe, and FIG. 4 is a perspective view showing another embodiment of the bending of the pipe. It is. 5... Sealing part, 6... Heat pipe, 6A... Lower bent part, 6B... Upper bent part, 7... Operation liquid.

Claims (1)

[Scope of Claims] 1. A heat pipe element characterized in that a working fluid is sealed between each of the sealed bent portions of a heat pipe that is bent in a non-linear manner. 2. Heat characterized by bending a single pipe in a non-linear manner, deaerating it, filling the inside with working fluid, distributing it between each bend, and then sealing a specific bend. Method for manufacturing pipe elements.