JPS63207994A - Heat circulating device - Google Patents

Abstract

PURPOSE:To take a cooling effect produced by adiabatic expansion into consideration and to improve the efficiency of heat circulation, by a method wherein a partition part, consisting of the upper part of a funnel-shaped upper part having an injection hole formed in an intermediate part, and a fine tube communicating with the upper part of the funnel-shape part, is located at the cen tral part of a cylinder, and coolant steam is injected through the injection hole to a cooling part. CONSTITUTION:A water absorption film 5 with which the whole surface of the outer wall of an outer cylinder 1 is covered absorbs water from a water surface (c) through a capillary action; water is diffused throughout the whole surface of the outer wall of the outer cylinder 1, and is gasified and vaporized to cool the outer cylinder 1. Saturated steam in an upper part 1 of the outer cylinder is condensed and liquefied, the inner pressure in the upper part 1 of the ouer cylinder is reduced. Coolant steam in a lower part 2 of the ouer cylinder is injected through an injection hole 7 to an upper part 1 of the outer cylinder, and the pressure in the lower part 2 of the outer cylinder is reduced to a saturated pressure or less. A liquid coolant 10 stored in the bottom of the lower part 2 of the outer cylinder is diffused to the inner wall of the lower part 2 of the outer cylinder through the capillary action of a water absorption film 6. Heat is imparted thereto from water on an outer periphery for gasification and evaporation, and the coolant is continuously injected through the injection hole 7 to the outer part 1 of the outer cylinder for condensation. A gasification latent heat imparted from water around the lower part 2 of the outer cylinder is exhausted to the open air through the outer periphery of the upper part 1 of the outer cylinder to cool water around the lower part 2 of the outer cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a thermal cycling device, and more particularly to a thermal cycling device that increases the efficiency of heat transfer by providing an adiabatic expansion mechanism within the device.

(Prior Art) Conventionally, there are various kinds of thermal cycling devices, and one of them is a thermal cycling device as shown in FIG. 4, for example.

This diagram schematically shows the operating principle of a thermal circulation device. A refrigerant is sealed inside a sealed cylindrical container V, and one end is a heating section a and the other end is a cooling section. The inner wall is lined with a proboscis fc that allows the condensate to flow back to the heating section a by capillary action. d is a heat insulating part.

When a required amount of heat is applied from the outside in the heating section a, the vapor that evaporates from the surface of the liquid moves to the cooling section where it is cooled by vapor pressure, where it is amped and liquefied. This liquefied refrigerant flows back to the heating section a by the capillary action of the lining material C on the inner wall.

In other words, the latent heat of vaporization is transferred through the action of evaporation from the liquid and condensation in the cooling section, thereby efficiently creating a thermal UM ring.

It is used for necessary cooling or heating depending on the purpose.

(Problems to be Solved by the Invention) Although the heat cycling device of the prior art described above is capable of transferring a large amount of heat with a simple structure, there are structural factors that limit the amount of heat transferred. One of the problems lies in the structure in which the condensed refrigerant liquid is returned to the heating section by the capillary action of the lining material.

Originally, the capillary action of the lining material changes slightly depending on the selection of the material, differences in processing, etc.

(Inner lining materials include glass fiber, ninkel fiber,
(Sintered metal, metal mesh, etc. are used) If this design and manufacturing are not appropriate, insufficient capillary action may occur, air bubbles may form within the lining, and liquid reflux may occur. If this is not done enough, one function will be significantly degraded.

It is an object of the present invention to provide a heat circulation device that eliminates the above-mentioned problems and further improves heat circulation efficiency by having a structure that takes into account the cooling effect of adiabatic expansion.

(Means and effects for solving the problem) The present invention has been made in consideration of the above-mentioned points, and has a tubular outer cylinder, a funnel-shaped part with a spout hole, and a partition part with a thin tube connected to the lower part. A heating section and a cooling section are airtightly partitioned and a refrigerant is sealed to form a thermal circulation device, and the refrigerant vapor generated when the heating section is heated is ejected into the cooling section from the pores of the partition. The refrigerant itself is cooled by adiabatic expansion and further condensed in the cooling section to transfer the latent heat of vaporization and perform thermal circulation. The heat moves from the bottom into the outer cylinder, and is dispersed over a wide range on the inner wall of the heating section due to the capillary action of the lining material on the inner wall of the outer cylinder, expanding the heating area and continuously heating, evaporating, and condensing. It is designed to complete the cycle.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a schematic diagram illustrating a thermal cycling device according to an embodiment of the present invention.

In the figure, 1 is the upper part of the tubular outer cylinder, and 2 is the lower part of the tubular outer cylinder, which are firmly and airtightly connected at the R part. Reference numeral 3 denotes a thin tube made of a highly heat insulating material, the upper part of which is shaped into a funnel shape and provided with an ejection hole 7, and is fixed to the outer cylinder 1 at the position shown in the figure.

Its outer periphery is hermetically coupled to the inner wall of the outer cylinder.

4 is a cooling fin, and 5 is a water-absorbing film having capillary action, which covers the outer surface of the cooling fin and the entire outer wall of the outer cylinder 1. Reference numeral 6 denotes a water-absorbing film having a capillary action, which covers almost the entire inner wall of the outer cylinder 2. 8 is a heat insulating ring, 9 is an annular float made of a material with good heat insulation and light specific gravity, and 10 is a refrigerant.

Now, suppose that the lower part of the thermal circulation device is immersed in water above the C line position, and the upper part of the outer cylinder 1 is exposed to the atmosphere.

The water absorption film 5 covering the entire outer wall of the outer cylinder 1 absorbs water from the water surface C by capillary action, diffuses over the entire outer wall of the outer cylinder 1, and evaporates to cool the outer cylinder 1.

The space above the liquid level of the refrigerant 10 sealed in the outer cylinders 1 and 2 is filled with saturated vapor of the refrigerant, but when the outer cylinder/upper part 1 is now cooled, the saturated vapor inside the outer cylinder upper part 1 The steam condenses and liquefies, the internal pressure in the upper part 1 of the outer cylinder decreases, and the refrigerant vapor in the lower part 2 of the outer cylinder is ejected into the upper part 1 of the outer cylinder from the ejection hole 7.

The pressure inside the outer cylinder lower part 2 decreases to below the saturation pressure.

The liquid refrigerant 10 stored at the bottom of the lower part 2 of the outer cylinder is diffused to the inner wall of the lower part 2 of the outer cylinder by the capillary action of the water-absorbing membrane 6.
It receives heat from the water around it and evaporates.

It evaporates and is continuously ejected from the nozzle hole 7 to the upper part 1 of the outer cylinder, condenses and transfers the latent heat of vaporization obtained from the water in the dark area of the lower part 2 of the outer cylinder to the upper part of the outer cylinder.
The water around the lower part 2 of the outer cylinder is cooled by being released into the atmosphere from the outer periphery of the outer cylinder 1.

In this process, if the flow rate of refrigerant vapor is restricted by appropriately setting the opening area of the ejection hole 7 and a difference is created between the internal pressure of the outer cylinder lower part 2 and the internal pressure of the outer cylinder upper part 1, The refrigerant liquid level decreases due to the pressure increase, and the refrigerant liquid level in the thin tube 3 rises, producing a liquid level difference F. The refrigerant vapor is ejected from the ejection hole 7 at a pressure corresponding to the liquid level difference F, expands adiabatically, cools the surrounding area, and also cools itself, increasing the cooling effect.

Also, the heat insulating ring 8 is cooled from the upper part 1 of the outer cylinder.

This is due to the refrigerant liquid that has condensed and descended through the thin tube 3.

Provided to prevent cooling of refrigerant vapor in the lower part 2 of the outer cylinder.

The float part 9 is a float formed by expanding the diameters of the bottom part of the outer cylinder upper part 1 and the upper part of the outer cylinder lower part 2, respectively, and is provided to float this heat circulation device on the water surface.

The above usage example will be explained by floating a large number of thermal circulation devices 31 on the water surface of a water tank to lower the water temperature of the water tank, as shown in FIG. Water pump 3
2. Y! , pipes 35 and the like to supply cooling medium to the required purpose (load 34).

Of course, the above explanation is based on one usage example, and as shown in FIG. 2, the float portion 9. In some cases, the water absorption film 5 is not provided.

The outer cylinder upper part 1 can be used as a cooling part and the outer cylinder lower part 2 can be used as a heating part, and can be used as a heat circulation device that can be used for a wide range of purposes.

(Effect of the invention) This invention is constructed as described above in detail.

The condensed refrigerant liquid flows down into the thin tube through the funnel-shaped partition, moves from the bottom of the heating section into the outer cylinder, and is widely dispersed on the inner wall of the heating section by the capillary action of the lining material on the inner wall of the outer cylinder, heating it continuously. In addition to evaporation and condensation, the cooling effect of adiabatic expansion is also taken into consideration, making it possible to perform heat circulation with extremely high efficiency, and there are no factors that inhibit its function depending on the conditions, so it can be used safely and reliably under a wide range of conditions. This provides an excellent heat circulation device that can handle the

[Brief explanation of the drawing]

FIG. 1 diagrammatically shows a thermal cycling device according to one embodiment of the present invention, FIG. 2 diagrammatically shows another embodiment, and FIG. 3 diagrammatically shows an example of the use of FIG. 1. FIG. 4 shows a conventional device. 1... Upper part of the outer cylinder, 2... Lower part of the outer cylinder. 3... Thin tube, 4... Cooling fin. 5...Water absorption film (cooling section), 6...Water absorption film (heating section)
. 7...Blowout hole, 8...Insulation ring. 9... Float part, 10... Refrigerant. 31... Heat circulation device, 32... Circulation pump. 33... Heat exchanger, 34... Load. 35... Conduit, W... Water. Patent Applicant Dai 1) Hiroshi Agent (Patent Attorney) Osamu Matsuzawa Figure 4

Claims (2)

[Claims] (1) In a thermal circulation device in which an upper part of a cylindrical outer cylinder and a lower part of an outer cylinder are airtightly connected to each other, one part serves as a heating part and the other part serves as a cooling part, and a refrigerant is sealed in the cylinder, an ejection hole is provided in the middle. A heat sink characterized in that a partition section consisting of a funnel-shaped upper part and a thin tube communicating with the partition section is provided in the center of the cylinder, so that refrigerant vapor vaporized in the heating section is ejected from the ejection hole to the cooling section. Circulation device. (2) The thermal circulation device according to claim 1, wherein the flow rate of the refrigerant vapor is restricted by appropriately setting the opening area of the ejection holes.