JPH0631701B2 - Heat cycle equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat circulation device, and more particularly to a heat circulation device that enhances heat transfer efficiency by providing an adiabatic expansion mechanism in the device.

(Prior Art) Conventionally, various types of heat circulating devices actually exist, and one of them is a heat circulating device as shown in FIG. 4, for example.

This figure schematically shows the operating principle of the heat circulation device, in which a refrigerant is enclosed in a sealed cylindrical container V, one end is a heating part a and the other end is a refrigerant part b. The inner wall is lined with a substance c for refluxing the condensate to the heating portion a by a capillary action. d is a heat insulation part.

When required heat is applied from the outside in the heating part a, the liquid is evaporated from the surface.

The generated vapor moves to the refrigerant part b which is being cooled by the vapor pressure, and is condensed and liquefied there.

The liquefied refrigerant is returned to the heating portion a by the capillary action of the lining material c on the inner wall.

That is, the latent heat of vaporization is transferred through the functions of vaporization from the liquid and condensation in the cooling part b to efficiently circulate heat, which is used for required cooling or heating depending on the purpose. Is.

(Problems to be Solved by the Invention) Although the above-described conventional heat circulation device enables a large amount of heat transfer with a simple structure, there is a factor that structurally limits the heat transport amount.

One of the problems is the structure in which the condensed refrigerant liquid is returned to the heating portion by the capillary action of the lining material.

Originally, the capillarity of the lining material changes subtly due to the difference in material selection and processing. (In general, glass fiber, nickel fiber, sintered metal, metallic mesh, etc. are used as the lining material.) If this design and fabrication are lacking, the capillary action is insufficient and the lining material is The liquid is not sufficiently refluxed due to the generation of bubbles in the inside, and the function is significantly deteriorated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat circulation device having a further improved heat circulation efficiency by solving the above-mentioned problems and further having a structure in which a cooling effect by adiabatic expansion is added.

(Means and Actions for Solving Problems) The present invention has been made in view of the above points, and has a cylindrical upper outer cylinder having a cooling fin on the outer periphery and a capillary membrane covering almost the entire inner wall. In a heat circulation device that connects the lower outer cylinder, uses the lower outer cylinder as a heating part, and uses the upper outer cylinder as a cooling part, communicates with an upper member that has a funnel-shaped upper part and has a plurality of ejection holes. A thin tube made of a highly heat-insulating material is provided in the center of the outer cylinder, a refrigerant is enclosed in the outer cylinder, and a heat insulating ring is provided below the lower outer cylinder. By setting so as to limit the flow rate of the refrigerant, a liquid level difference between the refrigerant liquid level in the narrow tube and the refrigerant liquid level of the lower outer cylinder is generated, and the refrigerant generated by heating the heating unit is generated. The steam is ejected to the cooling section through the pores in the partition section, Also cools by adiabatic expansion and further condenses in the cooling part to transfer latent heat of vaporization for heat circulation. It moves to the inside of the outer cylinder, and the capillary action of the lining material on the inner wall of the outer cylinder disperses it widely on the inner wall of the heating part to expand the heating area, so that heating, evaporation and condensation can be carried out continuously to perform heat circulation. It has become.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view schematically showing a heat circulation device according to an embodiment of the present invention.

In the figure, reference numeral 1 is a tubular upper outer cylinder, and 2 is a tubular lower outer cylinder, which is rigidly and airtightly coupled at the R portion. Reference numeral 3 is a thin tube made of a highly heat-insulating material, the upper part of which is shaped like a funnel, has a jet hole 7 and is fixed at the position shown in the upper outer cylinder 1, and its outer periphery is airtight to the inner wall of the outer cylinder. Is bound to. Reference numeral 4 is a cooling fin, and 5 is a water absorbing film having a capillary action, which covers the outer surface of the cooling fin and the entire outer wall of the upper outer cylinder 1. Reference numeral 6 denotes a water-absorbing film having a capillary action, which covers the inner wall of the lower outer cylinder 2, substantially the entire surface. Reference numeral 8 is a heat insulating ring, which is an annular float having a good heat insulating property and made of a material having a light specific gravity.

A float portion 9 is provided in the vicinity of the connection point between the upper outer cylinder 1 and the lower outer cylinder 2. Reference numeral 10 represents a refrigerant.

When the lower part of the heat circulation device is immersed in water up to the c-line position and the upper outer cylinder 1 is exposed to the atmosphere, the water absorbing film 5 coated on the entire outer wall of the upper outer cylinder 1 absorbs water by capillary action from the water surface c. Then, it diffuses over the entire outer wall of the upper outer cylinder 1, evaporates and evaporates, and cools the upper outer cylinder 1.

The space above the liquid surface of the refrigerant 10 enclosed in the outer cylinder is filled with the saturated vapor of the refrigerant. However, when the upper outer cylinder 1 is cooled, the saturated vapor in the upper outer cylinder 1 is condensed. And liquefies, the internal pressure of the outer cylinder 1 decreases, and the refrigerant vapor in the lower outer cylinder 2 is ejected from the ejection holes 7 into the upper outer cylinder 1.

The liquid refrigerant 10 stored at the bottom of the lower outer cylinder 2 diffuses to the inner wall of the outer cylinder 2 due to the capillary action of the water absorption film 6, receives heat from the water on the outer periphery, vaporizes and evaporates, and continuously ejects holes. From the outer peripheral surface of the upper outer cylinder 1, the latent heat of vaporization ejected from 7 to the upper outer cylinder 1 and condensed and obtained from the water around the lower outer cylinder 2 is released into the atmosphere to cool the water around the lower outer cylinder 2. .

In this process, the opening area of the ejection hole 7 is set so as to limit the flow rate of the refrigerant vapor, and a difference between the inner pressure of the lower outer cylinder 2 and the inner pressure of the upper outer cylinder 1 is generated, so that the inside of the lower outer cylinder 2 The pressure rises and the liquid level of the refrigerant decreases, and the liquid level of the refrigerant in the thin tube 3 rises to generate 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, adiabatically expands to cool the periphery, and also cools itself to enhance the cooling effect.

The heat insulating ring 8 is provided to prevent cooling of the refrigerant vapor in the lower outer cylinder 2 by the refrigerant liquid that has cooled and condensed from the upper outer cylinder 1 and has descended the thin tube 3.

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

In the description of the above-mentioned usage example, as shown in FIG. 3, the heat circulating device 31 is floated on the water surface of the water tank to lower the water temperature of the water tank, and the heat exchanger 33 and the water feed pump 3 are provided.
2. A cooling medium is supplied to a desired purpose (load 34) by a conduit 35 or the like.

As a matter of course, the above description is for one usage example, and as shown in FIG. 2, the float part 9 and the water absorbing film 5 may not be provided, and the upper outer cylinder may be the cooling part and the lower outer cylinder 2 may be omitted. Can also be used as a heating unit as a heat circulation device that can be used for a wide range of purposes.

(Effects of the Invention) Since the present invention is configured as described above in detail, the condensed refrigerant liquid flows down into the narrow tube by the funnel-shaped partition, moves from the bottom of the heating section into the outer cylinder, and the inner wall of the outer cylinder is lined. By the capillary action of the substance, it is widely dispersed on the inner wall of the heating part and continuously heated,
Since evaporation and condensation are performed, and the cooling effect due to adiabatic expansion is also added, heat circulation can be performed with extremely high efficiency, and there are no factors that hinder its function depending on the conditions, and it is safe and reliable in a wide range. It is possible to obtain an excellent heat circulation device that can be used under the conditions of use.

[Brief description of drawings]

FIG. 1 schematically shows a heat circulation device according to an embodiment of the present invention, FIG. 2 shows another embodiment, and FIG. 3 schematically shows an example of use of FIG. FIG. 4 shows a conventional device. 1 ... Upper outer cylinder 2 ... Lower outer cylinder 3 ... Thin tube 4 ... Cooling fin 5 ... Water absorption film (cooling part) 6 ... Water absorption film (heating part) 7 ... Jet 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 A ...... Refrigerant liquid level in narrow tube B ...... Lower part Liquid level of refrigerant in outer cylinder F ... Liquid level difference between A and B

Claims (2)

[Claims] 1. A cylindrical upper outer cylinder 1 having a cooling fin 4 on the outer periphery and a lower outer cylinder 2 having a capillary membrane 6 covering almost the entire inner wall are connected to each other, and the lower outer cylinder 2 serves as a heating section. In a heat circulation device using the outer cylinder 1 as a cooling unit, a thin tube 3 made of a highly heat-insulating material and communicating with an upper member having a funnel-shaped upper part and provided with a plurality of ejection holes 7 is provided in the outer cylinder. At the center, the refrigerant 10 is enclosed in the outer cylinder, and the heat insulating ring 8 is provided inside the lower outer cylinder 2 to set the opening area of the ejection hole 7 so as to limit the flow rate of the refrigerant vapor. Thus, the liquid level difference F between the liquid level A of the refrigerant in the thin tube 3 and the liquid level B of the refrigerant in the lower outer cylinder 2 is generated. 2. The outer surface of the upper outer cylinder 1 and the cooling fin 4 are covered with a water supply film 5 having a capillary action, and a float portion 9 is provided in the vicinity of a connection point between the upper outer cylinder 1 and the lower outer cylinder 2. The heat circulation device according to claim 1.