KR101014371B1

KR101014371B1 - Heat pipe

Info

Publication number: KR101014371B1
Application number: KR1020090036107A
Authority: KR
Inventors: 최영길
Original assignee: 최영길
Priority date: 2008-04-25
Filing date: 2009-04-24
Publication date: 2011-02-16
Also published as: KR20090113219A

Abstract

The present invention relates to a heat pipe having a simple structure and improved in structure to improve thermal conductivity and improve cooling and heating efficiency.

The structure has a hollow portion having a space capable of moving the fluid, which is a heat transfer medium, inside the pipe body, and is disposed close to the edge of the hollow portion and spaced apart from each other, and filled with a fluid, which is a phase change material, from the hollow portion. A plurality of working fluid holes having respective heating spaces are formed so as to be heated by the heat transferred, and a plurality of working fluid holes are formed on the top of the pipe body and are composed of a conductive part for diffusing and dissipating heat transferred from the hollow part and the working fluid holes.

According to the present invention, the heat conduction can be performed quickly and the heat loss can be minimized, and at the same time, the heat transfer area can be expanded to a compact volume, thereby increasing the space utilization.

In addition, since the working fluid holes are arranged in plurality of two or more, there is an advantage that the cooling and heating function can be performed even if any part is damaged.

Description

Heat pipe

The present invention relates to a heat pipe, and in particular, a simple structure is configured to combine the advantages of the thermo siphon method and the wick method, the heat pipe is heat transfer is improved and the structure is improved to maximize the cooling and heating efficiency It is about.

In general, the heat pipe is filled with a phase change material heat medium inside the tube, and when heat is applied to one side, the heat medium expands and moves, and the heat exchanged heat medium condenses and returns back to perform rapid heat exchange. .

When manufacturing such a heat pipe, the pipe is cut to a certain length, and a stopper is inserted and welded at both ends, and an injection hole is formed at one end of the pipe, and the heating medium is filled with a heating medium while a vacuum is injected through a heating medium injection device provided with a welding device. The inlet is welded and sealed by a welding device.

In addition, the heat pipe is a hollow body and a thermally conductive sealed metal container is inserted a suitable amount of a phase change material, such as water, alcohol, acetone, freon, etc., causing a phase change depending on the heating conditions, and the atmospheric pressure inside the container. The composition is welded and sealed by the following vacuum.

The operating principle of the heat pipe is that when heat is applied from the heat source to the evaporator region, the working material in the heat pipe evaporator boils at low heat, moves to the condensation part of the low pressure vessel, and exchanges heat. It condenses on the inner wall of the vessel and returns to the evaporation part on the inner wall of the vessel due to the difference in pressure in the vessel and the influence of the gravity field. This process is rapidly cycled under repeated vacuum conditions.

Existing heat pipes have been widely used in general commercial or industrial fields because of their excellent heat transfer performance, and are widely used as heat exchangers for semiconductor cooling, waste heat recovery, and space heating.

In addition, the existing heat pipe is attached to the wick (wick) in the sealed vacuum pipe heat dissipated by the capillary phenomenon of the wick, the wick-type heat that the condensed working fluid is returned to the evaporator to absorb heat from the heat source again to repeat evaporation Thermo-syphon heat to allow the working fluid to dissipate from the condensation unit and to incline the pipe and the wick so that the working fluid in the condensed state collects in the evaporation unit under its own gravity to repeat evaporation and condensation. Separated by pipes.

Among them, wick type heat pipes are classified into groove wick, screen mesh wick, and sintered wick according to the structure and shape of wick.However, the manufacturing cost and construction cost for forming the wick are high. However, when the thermosiphon type heat pipe is used in the heating ondol structure, it needs to be inclined to move the working fluid. Therefore, the cement volume of the cement mortar layer is increased by increasing the construction volume of the cement mortar by the inclined angle. There is a problem that a lot of materials such as, etc., and the conventional heat pipe has a low heat conduction rate in the process of conducting heat from the heat transfer part to the end, which lowers the heat conduction efficiency and thus can be employed for heating, especially on the flooring floor. There is no situation.

In addition, the conventional heat pipe has a problem in that when the part is broken, the phase change material leaks to the outside, and thus heat is not properly transferred and thus the heating and cooling function is lost.

The present invention has been proposed to solve the above problems in consideration of the above-mentioned problems, and its object is to have a simple structure to combine the advantages of the thermo siphon method and the wick method, as well as to quickly conduct heat and lose heat. It is to provide a heat pipe whose structure is improved to maximize the cooling and heating efficiency by preventing.

In addition, an object of the present invention is to provide a heat pipe having a plurality of working fluid holes so as not to lose the cooling and heating function even if the working fluid holes are partially damaged.

In order to achieve the above object, the present invention provides a hollow part having a space in which a fluid is filled and a fluid is movable inside the pipe body,

A plurality of working fluid holes are disposed to be adjacent to the edge of the hollow portion and spaced apart from each other, and each heating space is filled with a phase change material therein so as to be heated by heat transmitted from the hollow portion.

And a conductive plate disposed on an upper portion of the pipe body to diffuse and dissipate heat transferred from the hollow portion and the working fluid hole.

A plurality of grooves are formed in the longitudinal direction on the inner circumferential surface of the hollow portion or the working fluid hole.

The support plate corresponding to the bottom surface is integrally formed under the pipe body.

The working fluid hole is preferably arranged above the position adjacent to the hollow portion.

The conductive plate is formed with at least one extension piece having a structure folded outward for heat diffusion to the edge portion.

The hollow portion has a fitting portion protruding outward from the pipe body at one end.

The present invention relates to a heat pipe made of a simple structure and its structure is improved so that the thermal conductivity is improved and the cooling and heating efficiency can be improved. Since the heat conduction is quickly formed and the heat loss can be minimized, the heat transfer area can be expanded to a compact volume, thereby increasing the space utilization.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same components for each embodiment will be denoted by the same reference numerals and redundant descriptions will be omitted.

The first embodiment of the heat pipe according to the present invention, as shown in Figures 1 to 3, is used for the floor heating of the ondol or floor, the structure of the fluid which is a heat transfer medium inside the pipe body 110 A hollow part 120 having a movable space is formed, and a plurality of hollow parts 120 are disposed to be close to the edges of the hollow part 120 and are spaced apart from each other, and a fluid that is a phase change material is filled therein so that the fluid of the hollow part 120 is filled. A working fluid hole having respective heating spaces to be filled with a liquid phase change material in which a phase change from a liquid to a gas is performed by heat transmitted from the liquid, and sealed in a closed space and heated by heat transmitted from the hollow part 120. A plurality of 130 is formed, and is disposed on the pipe body 110 is composed of a conductive plate 150 for diffusing and dissipating heat transferred from the hollow portion 120 and the working fluid hole (130).

In more detail, the hollow part 120 is formed in the middle of the pipe body 110 in the longitudinal direction and has a function of transferring heat to the working fluid hole 130 while passing through the fluid which is a heat transfer medium.

In addition, the working fluid hole 130 is disposed between the hollow part 120 and the conducting plate 150, the bottom constituting the working fluid hole 130 to be formed in a shape that is pointed toward the outside from one side of the center One side is formed to extend in the form inclined upward from the center of the hollow portion 120.
That is, the working fluid hole 130 is disposed above the center of the hollow portion 120, has a structure in which a phase change material is filled therein, and both ends thereof are sealed, and the upper portion is located near the hollow portion 120. It is arranged in plurality and the conductive plate 150 is arranged on the upper side.

On the other hand, the working fluid hole 130 is preferably disposed on the upper side of the hollow portion 120 due to the nature that is first transmitted to the upper side by the air flow is the heat rises.

Meanwhile, as shown in FIG. 4, return holes 160 and 170, which are passages through which fluid as a heat transfer medium is returned, may be disposed at both sides of the hollow part 120.

The conductive plate 150 is disposed in the upper portion of the pipe body 110 and is configured in the form of a plate extending horizontally in the longitudinal direction.

In addition, in the inner circumferential surface of the hollow portion 120 or the working fluid hole 130, triangular grooves (GROOVE) 25 are formed long in the longitudinal direction and spaced apart from each other so as to be a return passage of the fluid, the phase change material filled therein. Formed.

5, the support plate 115 corresponding to the bottom surface may be integrally formed at the bottom of the pipe body 110, which may be in surface contact with the indoor bottom surface to support the pipe body 110. It is combined with cement mortar constituting the indoor floor has a function of fixing the pipe body 110 to the floor.

The groove 25, which is a triangular wick, becomes not only a return passage of the condensed fluid, but also a flow passage through which heat is recovered.

In addition, since the grooves 25 are formed in a triangular shape and can be continuously flowed by the surface tension to the other grooves 25 adjacent to the fluid, the transfer of the fluids is easy and the heat transfer efficiency is improved.

Width and depth (height) of the groove 25 for this is preferably 0.1 ~ 0.5mm, respectively, but is not necessarily limited thereto.

And, as shown in Fig. 6 and 7, the conductive plate 150 is formed by removing a portion of both edges to form a through-hole 152 by pressing, and formed by bending the cut out portion of the through-hole 152. The extension piece 155 of the structure which turned outward is formed in multiple numbers.

Accordingly, the extension piece 155 has a function of bending the end portion to protrude outward than the outer end portion of the conductive plate 150 to extend the length of the heat diffusion portion.

Heat pipe 100 of the present invention is used in the ondol structure as shown in Figs. 8 and 9 as an example of its use, or it is to be arranged on the indoor floor in a structure that is built in the floor panel 200 side as shown in Figs. Can be.

In the case of adopting the ondol structure, the hollow portion 120 of the heat pipe 100 has a structure in which the hot water or hot air of the boiler is circulated through the connection pipe 450 and the distribution pipe 400.

That is, each heat pipe 100 is connected to the side of the distribution pipe 400 and disposed spaced apart from each other in parallel on the indoor floor.

On the other hand, as shown in Figure 4, when the return holes 160, 170, which are passages for the fluid to return to the boiler side is disposed on both sides of the hollow portion 120 is that the distribution pipe 400 is spaced apart on both sides It can only be placed on one side.

In addition, when the heat pipe 100 is embedded in the floor panel 200, the heat storage material may be disposed in the floor panel 200, and a plurality of floor panels 200 are connected to each other on the indoor floor. In the process of construction so as to form a different shape of the hollow portion 120.

In this case, the hollow portion 120 is fitted to protrude outward from the pipe body 110 at one or both ends for coupling the heat pipes 100 embedded in the other floor panel 200 adjacent thereto. The portion 125 is formed, the fitting portion 125 has a structure that is inserted into the hollow portion 120 of the other heat pipe 100, the sealing member of the known ring-shaped on the connection portion of the fitting portion 125 ( Not shown) is arranged to prevent leakage of the fluid.

At this time, the fitting portion 125 is formed with a diameter smaller than the inner diameter of the hollow portion 120 of the heat pipe 100 for insertion into the hollow portion 120, or the fitting portion 125 at the other end side of the hollow portion 120. May be recessed inward by the protruding length.

Reference numerals "210" and "220" denote fitting projections and fitting grooves formed on both sides of the floor panel 200 for coupling with adjacent floor panels 200, and "230" indicates floor panels 200. ) Is a cover of a metal material having good thermal conductivity to transfer the heat transferred from the conduction plate to the room, and "W" represents an interior wall.

The operation of the present invention having such a configuration will now be described.

The heat pipe 100 according to the present invention may be installed on an indoor floor surface and embedded in an ondol structure or floor panel 200 in which cement mortar C is poured, and thus may be adopted in a floor structure.

In the case of first adopting the ondol structure, after placing a plurality of heat pipes 100 in parallel on the indoor floor, a distribution pipe (at the end of each heat pipe 100 so that the fluid, which is a heat transfer medium, circulates from the boiler 300) 400 and the connection pipe 450 is connected.

At this time, each distribution pipe 400 and the connection pipe 450 are interconnected by a known pipe piping method.

Subsequently, when the cement mortar (C) is poured to the side of the heat pipe 100 to form an indoor bottom surface, the distribution pipe 400 and the connection pipe 450 is embedded in the cement mortar (C), but conduction The upper surface of the plate 150 is exposed to the outside and has a function of the indoor floor surface to directly transfer heat to the room.

On the other hand, when embedded in the floor panel 200, a plurality of floor panels 200 are fitted to each other to be connected to each other to form a floor floor surface.

At this time, the heat pipes 100 embedded in each floor panel 200 are connected to each other through the fitting portion 125 through which the hollow portion 120 is connected.

After the construction of the indoor floor structure (floor or ondol structure) is completed, when a fluid such as hot water or hot air is supplied to the distribution pipe 400 through the connection pipe 450 in the boiler 300, the distribution pipe 400 In each of the hollow portion 120 of the heat pipe 100 is arranged in parallel to the indoor floor surface.

Accordingly, each heat pipe 100 is transferred to the upper side of the fluid as the heat transfer medium passing through the inside of the hollow portion 120 is circulated through the boiler 300, the operating fluid hole ( In the process of being transferred to the conductive plate 150 side through the 130 side, the condensation portion of the vessel having a low pressure due to the relatively low temperature as the fluid, which is a phase change material filled in the working fluid hole 130 sealed at both ends, is heated. Since the heat is exchanged to the heat exchanger, heat conduction is quickly performed, and thermal conductivity in the longitudinal direction is improved, and an upper cement mortar (C) layer or floor panel is formed through the conductive plate 150 disposed thereon. It is conducted to the (200) side to heat the room.

In this case, when the fluid, which is a phase change material, is a liquid, it is boiled and evaporated by the heat transferred from the hollow part 120, and the vaporized gas is conducted to a portion having a relatively low temperature through the groove 25 to conduct a conductive plate ( 150 is heated, and after the heating using the conductive plate 150 is completed, when the heat supplied from the hollow part 120 is removed, it is cooled again and condensed on the inner wall of the working fluid hole 130 to be liquefied again.

On the other hand, in the heat pipe 100 of the present invention, when cold water or cold air is supplied to the hollow part 110 from the boiler 300 side, cold air is conducted in the same manner as the heat transfer process described above, so that the conductive plate ( Cold air is emitted from 150 to cool the room.

12 is a view showing a second embodiment of the present invention, the configuration of the hollow body 120 and the hollow portion 120 is formed so as to have a space in which the fluid is filled and the fluid can move inside the pipe body 110, And a plurality of working fluid holes 130 disposed to be adjacent to the edges and spaced apart from each other, and have respective heating spaces so that the phase change material is filled therein and heated by heat transferred from the hollow part 120. It is.

The working fluid hole 130 is disposed above the hollow part 120 in consideration of heat transfer.

In addition, the upper surface of the pipe body 110 is preferably a structure formed rounded in an arc shape, which is a structure in which the conductive plate described above is omitted, considering the coupling with cement mortar when disposed on the top of the heat concentration and the ondol floor. .

That is, by constructing a rounded circular arc shape rather than the upper surface structure of the flat plate shape, it is to improve the workability during the construction of the ondol.

1 is a perspective view showing a part of the structure of the heat pipe according to the present invention.

2 is a front view of the heat pipe of the present invention;

Figure 3 is a cross-sectional view showing a structure in which a groove is formed on the inner peripheral surface of the hollow portion and the working fluid hole of the present invention.

Figure 4 is a cross-sectional view showing a state in which the return hole for returning the fluid of the heat transfer medium of the present invention arranged on both sides of the hollow portion.

Figure 5 is a cross-sectional view showing a structure in which a support plate is formed at the bottom of the pipe body of the present invention.

Figure 6 is a perspective view showing a structure in which an extension plate is formed in the conductive plate of the present invention.

7 is a cross-sectional view of FIG. 6.

8 is a use state in which the heat pipe of the present invention is adopted in the ondol structure.

9 is a use state showing a part of the heat pipe of the present invention buried by cement mortar.

10 is a use state in which the heat pipe of the present invention is adopted in the floor panel.

11 is a perspective view showing a structure in which a fitting portion is formed at one end of a hollow portion for longitudinal coupling of floor panels employing a heat pipe;

12 is a partially cutaway perspective view showing a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

25: groove 100: heat pipe

110: pipe body 115: support plate

120: hollow part 125: fitting part

130: working fluid hole

150: conduction plate 155: extension

Claims

As a heat pipe used for the floor heating of the ondol and the floor,

A hollow part 120 formed inside the pipe body 110 and having a space through which a fluid serving as a heat source passes;

A plurality of phases disposed close to the hollow part 120 are disposed to be spaced apart from each other, and a phase change material in a liquid state in which a phase change from liquid to gas is filled by heat transferred from the fluid of the hollow part 120. A working fluid hole (130) sealed in a closed space and having a respective heating space to be heated by heat transferred from the hollow portion (120);

And a conductive plate 150 disposed on the pipe body 110 to diffuse and dissipate heat transferred from the hollow part 120 and the working fluid hole 130.

The working fluid hole 130 is disposed between the hollow portion 120 and the conducting plate 150, the bottom constituting the working fluid hole 130 to be formed in a pointed shape toward the outside from one side of the center One side of the heat pipe, characterized in that formed to extend in the form inclined upward from the center of the hollow portion (120).

The method according to claim 1,

Heat pipe, characterized in that a plurality of grooves (25) is formed in the longitudinal direction on the inner peripheral surface of the hollow portion (120) or the working fluid hole (130).

The method according to claim 1,

Heat pipe, characterized in that the support plate 115 corresponding to the bottom surface is formed integrally under the pipe body (110).

The method according to claim 1,

The working fluid hole 130 is The phase change of the phase change material filled in the working fluid hole 130 is formed by the heat transferred from the hot water disposed in the upper portion higher than the center of the hollow portion 120, the hollow portion 120. Heat pipe characterized by the above-mentioned.

The method according to any one of claims 1 to 4,

The conductive plate 150 is a heat pipe, characterized in that formed at least one extension piece 155 having a structure folded outward for heat diffusion in the edge portion.

The method according to any one of claims 1 to 4,

The hollow part 120 is a heat pipe, characterized in that the fitting portion 125 is formed to protrude outward of the pipe body 110 at one end.

As a heat pipe used for the floor heating of the ondol and the floor,

A hollow part 120 formed to have a space filled with a fluid inside the pipe main body 110 and capable of moving the fluid;

A plurality of phases disposed close to the hollow part 120 are disposed to be spaced apart from each other, and a phase change material in a liquid state in which a phase change from liquid to gas is filled by heat transferred from the fluid of the hollow part 120. It is sealed in a closed space, and provided with a working fluid hole 130 having a respective heating space to be heated by the heat transferred from the hollow portion 120,

The working fluid hole 130 extends in a form inclined upwardly from the center of the hollow part 120 so that the bottom side surface constituting the working fluid hole 130 is formed to be pointed toward the outside from one side of the center. Heat pipe, characterized in that formed to be.

The method of claim 7,

The working fluid hole 130 is formed on the hollow portion 120, characterized in that the heat pipe.

The method according to claim 8,

Heat pipe, characterized in that the upper surface of the pipe body 110 is formed rounded in an arc shape.