JPS61259089A - Heat pipe - Google Patents

Abstract

PURPOSE:To enable heating at the upper part and cooling at the lower part by providing a bucket vertically movable and filled with a condensate, a liquid reservoir which stores a condensate placed in the bucket, and means for upwardly moving the bucket when the condensate is filled therein. CONSTITUTION:A main heat pipe body 1 is provided with fins 2 and 2'. A bucket 5 is provided at the upper part of a spring 6, vertically moves within the main heat pipe body, and a condensate is filled therein. In this operation, steam passed through pipes 9 and 10 and reaches a cooling part X and condenses, and the condensate flows to the bucket 5. When the liquid is removed from the upper part and the condensate is filled with the bucket 5, a spring made of a shape memory alloy is heated by the heater 7, and the bucket 5 is pushed upwardly. Then, when the bucket 5 reaches a pipe 8, the condensate therein flows into a liquid reservoir 11 via a pipe 9, and the steam within the liquid reservoir 11 escapes to the cooling part via a pipe 10. Then, when the operation of the heater 7 is stopped, the temperature is lowered, and the spring 6 shrinks gradually, and the bucket 5 is returned to the lower part.

Description

[Detailed description of the invention] (Technical field) The present invention relates to heat pipes.

(Background Art) FIGS. 4 and 5 show conventional heat pipes.

In FIG. 4, 1 is a heat pipe, 2 is a fin, and 3 is a heat medium (solidifying liquid). X is a cooling section, and Y is a heating section. The heat medium 3 is heated and evaporated in the Y heating section, rises inside the heat pipe 2, is cooled in the X cooling section, releases latent heat, and condenses on the wall surface.

The condensed liquid falls down the wall due to gravity and reaches the heating section Y.
Return to That is, heat is transferred from the heating section Y to the cooling section X by repeating the cycle of evaporation and condensation of the heat medium. However, since the condensate falls back down due to gravity, the heating section Y must be located at the bottom and the cooling section X at the top.

In FIG. 5, contrary to FIG. 4, the positional relationship is such that the heating section Y is at the top and the cooling section X is at the bottom. The condensate 3 accumulated at the bottom passes through a quick 4 provided on the inner wall surface and returns to the heating section Y at the top by capillary action.

However, the rate at which the condensate returns from the cooling section to the heating section is slower than when gravity falls. There is also a limit to the distance that can be returned vertically. That is, the condensate cannot be raised above a certain height by capillary action.

(Object of the Invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a heat pipe with upper heating and lower cooling, that is, so-called top heat m.

(Disclosure of invention) FIG. 1 shows an embodiment of the invention.

In the figure, l is the heat pipe body, 2 and 2' are fins,
7 is a heater provided at the bottom of the heat pipe main body, 6 is a spring made of memory alloy provided inside the heat pipe main body, and 7 is provided at the top of this spring, and the inside of the heat pipe main body is vertically moved. The inside of the bucket is filled with the coagulating liquid 3, and has an outer diameter approximately equal to the outer diameter of the heat pipe body. 8, 9, and 10 are pipes, 8.9 is provided approximately at the center of the heat pipe body, and IO is provided on the side.

Next, the present invention will be explained in detail with reference to FIG.

In FIG. 2(a), the solidified liquid is first formed in the upper heating section Y, and the evaporated steam reaches the cooling section X at the lower part of the pipe through the pipes 9 and 1O. There, the steam condenses and the condensate becomes bucket 5
flows into. There is almost no liquid at the top, and the bucket is 5
When the condensate is full, the heater 7 is turned off and the spring 6 is turned off.
Start heating (see step 4). The spring 6 is made of shape memory alloy and is set so that when it reaches a certain temperature (/1) it will be in an elongated state as shown in the figure. push upward.

When the bucket 5 reaches the pipe 8, the coagulated liquid inside flows into the pipe 9.
The liquid flows into the permeable liquid reservoir section 11. The steam in the liquid reservoir section 11 escapes to the cooling section through the pipe 10. Heater 7
When you stop the temperature, the spring 6 gradually contracts as the temperature drops.)
Return the bucket 5 to the bottom as shown in the figure. This spring 6 is not limited to shape memory alloy. Any material that can move the bucket 5 up and down, such as a bimetal or a spring-shaped pipe containing a heat medium inside, may be used.

Further, the pipe IO does not matter whether it is inside or outside the heat pipe.

FIG. 3 shows another embodiment of the present invention.
This is an example in which a permanent magnet 12 and an electromagnet 13 are used to move the . When the inside of the bucket 5 is filled with condensed liquid, an electric current is applied to the electromagnet 13, and the bucket 5 is carried upward by the repulsive force with the permanent magnet 12 attached to the bottom of the bucket 5.

Therefore, the columnar part 8 causes the condensate 3 in the bucket 5 to overflow into the liquid reservoir part 11. When the current is cut off, the bucket 5 returns to the lower position.

(Effects of the Invention) As described above, the present invention includes a heat pipe main body provided with a plurality of fins at the upper and lower parts thereof, and a heat pipe provided inside the heat pipe main body and movable in the vertical direction. A bucket with an outer diameter approximately equal to the inner diameter of the heat pipe body for filling the coagulation liquid, and a liquid reservoir provided inside and above the heat pipe body to collect the coagulation liquid in the bucket when the bucket rises. When the inside of the bucket is filled with the coagulating liquid, a means for moving the bucket upwards is provided. ) It is possible to obtain a long heat vibrator.

[Brief explanation of the drawing]

FIG. 1 shows one embodiment of the heat pipe of the present invention, FIG. 2 is an explanatory diagram of operation, FIG. 3 shows another embodiment of the present invention, and FIGS. 4 and 5 show a conventional example.

Claims (1)

[Claims] A heat pipe body with a plurality of fins provided at the upper and lower parts thereof, and a heat pipe body provided inside the heat pipe body,
and a bucket that is movable in the vertical direction and has an outer diameter approximately equal to the inner diameter of the heat pipe body to fill the coagulation liquid, and is provided above the inside of the heat pipe body, and when the bucket is raised, the inside of the bucket is A heat pipe comprising: a liquid reservoir for storing a coagulating liquid; and means for moving the bucket upward when the bucket is filled with the coagulating liquid.