KR102134282B1 - Manufacturing apparatus of heat exchange pipe, Heat exchange pipe and Heat-recovery system using the same - Google Patents

Abstract

The present invention relates to a heat exchange pipe manufacturing apparatus, a heat exchange pipe and a heat recovery system using the same, which can improve the performance of the heat exchange pipe by reducing the heat resistance by promoting the boiling of the working fluid.
To this end, the present invention is to form a space portion between the inner surface of the metal pipe and the outer surface of the insert member by placing an insert member inside the metal pipe provided with a hollow portion; A filling step of filling a coating layer forming material containing metal particles in the space to form a porous coating layer on the inner surface of the metal pipe; A sintering step of sintering the metal particles filled in the space portion; And an insert member removing step for removing the insert member disposed inside the metal pipe.

Description

Heat exchange pipe manufacturing apparatus, heat exchange pipe and heat recovery system using the same{Manufacturing apparatus of heat exchange pipe, Heat exchange pipe and Heat-recovery system using the same}

The present invention relates to a heat exchange pipe manufacturing apparatus, a heat exchange pipe and a heat recovery system using the same, and more particularly, to promote the boiling of the working fluid, thereby reducing the heat resistance to improve the performance of the heat exchange pipe, heat exchange pipe manufacturing apparatus, heat exchange It relates to a pipe and a heat recovery system using the same.

The thermo siphon heat exchanger is a heat exchanger that is widely used in waste heat recovery devices such as factories and devices for cooling computer microcomputers. The thermosyphon heat exchanger uses the pressure difference and gravity due to thermodynamic evaporation and condensation without using a separate power source such as a pump in the sealed pipe piping, and the refrigerant circulates continuously from the evaporation section to the condensation section. It is delivered to the condensation unit.

The heat exchange pipe used in the conventional thermosyphon heat exchanger has a condensation part and an evaporation part, and a connection part connecting the condensation part and the evaporation part.

In the conventional heat exchange pipe, when heat is applied to the evaporation part, the working fluid evaporates from the evaporation part and steam moves through the connection part to the condensation part due to a difference in vapor pressure. The transferred steam condenses in the condensing part and the latent heat of condensation escapes to the outside. The condensed fluid flows through the inner wall of the metal pipe by gravity and passes through the connection part and returns to the evaporation section, whereby heat exchange is performed.

Recently, various studies have been conducted to improve the heat exchange performance of the heat exchange pipe.

Republic of Korea Patent Publication No. 10-2000-005218 (Invention name: Thermo siphon heat exchanger, published on August 16, 2000)

An object of the present invention is to solve the conventional problems, by providing a porous coating layer on the heat exchanger pipe, by promoting the boiling of the working fluid to reduce the heat resistance to maximize the energy efficiency by reducing heat resistance pipe manufacturing apparatus, heat exchange pipe And to provide a heat recovery system using the same.

In order to achieve the object of the present invention described above, the present invention is to form a space portion between the inner surface of the metal pipe and the outer surface of the insert member by placing an insert member inside the metal pipe provided with a hollow portion. ; A filling step of filling a coating layer forming material containing metal particles in the space to form a porous coating layer on the inner surface of the metal pipe; A sintering step of sintering the metal particles filled in the space portion; And an insert member removing step of removing the insert member disposed inside the metal pipe, wherein the material of the metal particles has the same thermal expansion coefficient as the material of the metal pipe, and the material of the insert member is the metal. Provided is a heat exchange pipe manufacturing method characterized in that a material having a smaller coefficient of thermal expansion than that of a particle is used.

Here, the metal pipe and the metal particles may be made of any one of copper or stainless steel, and the insert member may be a carbon rod formed of a carbon material.

In the sintering step, the metal particles are fused to only the inner surface of the metal pipe to form the porous coating layer, and the larger the size of the metal particles, the larger the thickness of the porous coating layer can be formed.

On the other hand, the manufacturing method of the heat exchange pipe further comprises the steps of manufacturing an insert mold including an insert member and a mold body part integrally formed with the insert member and having an insertion space into which the metal pipe can be inserted, wherein the The insertion space portion may have a shape surrounding the insert member.

The manufacturing method of the heat exchange pipe further includes a preparation step of preparing the coating layer forming material, and the coating layer forming material further comprises polymer particles for securing the fluidity of the coating layer forming material, and in the preparation step, the metal particles and The polymer particles can be stirred and mixed.

Here, the filling step, the mixture of the metal particles and the polymer particles may be filled by an injection process.

The manufacturing method of the heat exchange pipe may further include a melting step of melting the polymer particles by adding a solvent to the mixture filled in the space.

In addition, in the sintering step, the metal particles in the mixture filled in the space portion are fused to the inner surface of the metal pipe, and the polymer remaining without being removed in the melting step may be removed.

According to another embodiment of the present invention, the present invention is in contact with an external heat source evaporation unit for evaporating the working fluid therein, and the condensation unit for condensing the working fluid in the gaseous state vaporized in the evaporation unit, the A metal pipe having a connection portion for connecting the evaporation portion and the condensation portion and forming a closed space therein; And, it is coated on the inner surface of the evaporator to provide a heat exchange pipe comprising a; porous coating layer to promote the boiling of the working fluid.

According to another embodiment of the present invention, the heat exchange pipe described above; A heat exchange body having a first side wall and a second side wall for installing the heat exchange pipe; A space partition member installed in the heat exchange body to independently partition a first heat exchange space part for heat exchange with a fluid discharged from a waste heat source, and a second heat exchange space part for heat exchange with a heating target fluid flowing from the outside; Including, the free end of the evaporation portion of the heat exchange pipe is fixed on the first sidewall forming the first heat exchange space portion, the free end of the condensation portion of the heat exchange pipe is the second forming the second heat exchange space portion It is fixed on the side wall, the connection portion of the heat exchange pipe provides a heat recovery system characterized in that through the space partition member.

Here, the free end of the evaporation unit may be installed lower than the free end of the condensation unit based on the ground on the heat exchange body.

The heat recovery system may further include a sealing member disposed between the heat exchange pipe and the space partition member to prevent the first heat exchange space part and the second heat exchange space part from communicating with each other.

An apparatus for manufacturing a heat exchange pipe according to the present invention, a heat exchange pipe and a heat recovery system using the same have the following effects.

First, the present invention has the advantage of improving the heat transfer performance of the heat exchange pipe by providing a porous coating layer on the inner surface of the heat exchange pipe, thereby reducing the heat resistance by promoting the boiling of the working fluid contained in the evaporator.

Second, the present invention facilitates the porous coating layer on the heat exchange pipe by using a material having the same thermal expansion coefficient as the metal pipe of the heat exchange pipe as the metal particles forming the porous coating layer and using a material having a lower thermal expansion rate than the metal particles as the insert member. It has the advantage of being able to fuse.

Third, by using a heat exchange pipe having a porous coating layer, it is possible to efficiently recover heat from the fluid discharged from the waste heat source, thereby increasing energy efficiency.

1 is a view sequentially showing a manufacturing process of a heat exchange pipe according to an embodiment of the present invention.
2 is a view sequentially showing a manufacturing process of a heat exchange pipe according to another embodiment of the present invention.
3 is a cross-sectional view showing the structure of a heat exchange pipe according to the present invention.
Figure 4 is a graph showing the comparison of the heat conduction performance when there is no porous coating layer and when there is a porous coating layer.
5 is a graph showing the relationship between the coating thickness and the heat transfer coefficient of the porous coating layer according to the present invention.
6 is a view schematically showing the structure of a heat recovery system according to the present invention.

Hereinafter, preferred embodiments of the present invention in which the above-described problem to be solved can be realized in detail will be described with reference to the accompanying drawings. In describing these embodiments, the same name and the same code are used for the same configuration, and additional descriptions thereof are omitted below.

1 is a graph sequentially showing a manufacturing method according to an embodiment of a method for manufacturing a heat exchange pipe according to the present invention. Referring to FIG. 1, an embodiment of a method for manufacturing a heat exchange pipe according to the present invention will be described as follows.

The method of manufacturing a heat exchange pipe according to an embodiment of the present invention is a method of forming a porous coating layer on the inner surface of the heat exchange pipe, wherein the method of manufacturing the heat exchange pipe 100 includes a space part forming step, a filling step, a sintering step and an insert. And removing the member.

First, as shown in FIGS. 1A and 1B, a process of forming a space 30 is performed to form a space 30 between the metal pipe 10 and the insert member 20.

That is, in the forming of the space part, the insert member 20 is disposed inside the metal pipe 10 provided with the hollow part 11 so that the inner surface of the metal pipe 10 and the outer surface of the insert member 20 are provided. The space part 30 is formed between them.

At this time, the metal pipe 10 is formed in a cylindrical shape, the insert member 20 is formed in a cylindrical shape having the same shape as the metal pipe 10, the metal pipe in order to form the space portion 30 It is preferably formed to have a diameter smaller than that of (10). At this time, the space portion 30 is a space in which a coating layer forming material is filled to form a porous coating layer 40 to be described later.

Next, as shown in FIG. 1C, a filling process for filling the spacer 30 with a coating layer forming material is performed.

That is, the filling step is to fill a coating layer forming material including metal particles 51 in the space portion 30 to form the porous coating layer 40 on the inner surface of the metal pipe 10.

In one embodiment of the present invention, it is proposed to form the porous coating layer 40 using only the metal particles 51, between the inner surface of the metal pipe 10 and the outer surface of the insert member 20 Filling the metal particles 51 in the space portion 30 formed in the porous coating layer 40 is formed. At this time, the metal particles 51 may be filled by a separate device such as a dispenser.

On the other hand, the material of the metal particles 51 is a material having the same thermal expansion coefficient as the material of the metal pipe 10, and the material of the insert member 20 has a smaller thermal expansion rate than the material of the metal particles 51. It is preferred that the material is used.

This is to ensure that the metal particles 51 forming the porous coating layer 40 are well fused to the metal pipe 10. Specifically, the metal pipe 10 and the metal particles 51 are made of a material having the same thermal expansion coefficient, and the insert member 20 is made of a material having a smaller thermal expansion coefficient than the material of the metal particles 51. In the sintering process described later, the metal particles 51 are fused to the inner surface of the metal pipe 10, but are not fused to the insert member 20 having a small thermal expansion coefficient.

At this time, the material of the metal pipe 10 and the metal particles 51 may be any material of copper or stainless steel. That is, if the material of the metal pipe 10 is a copper material, the material of the metal particles 51 is also a copper material. If the material of the metal pipe 10 is made of stainless steel, the metal particles 51 are The material is also made of stainless steel.

On the other hand, the insert member 20 may be used a carbon rod formed of a carbon material. During the sintering process, the metal particles 51 have the same material because the carbon material used as the insert member 20 is a material having a lower thermal expansion rate than the copper and stainless steel materials, which are materials used for the metal pipe 10. It is fused only to the inner surface of the used metal pipe (10).

Next, as shown in Figure 1d, a process of sintering the metal particles 51 is performed.

A sintering space 81 is provided in the sintering furnace 80 used in the sintering step, and a metal pipe filled with the metal particles is placed in the sintering space.

That is, the sintering step is to sinter the metal particles 51 in a state where the metal pipe 10 in a state in which the metal particles 51 are filled in the space portion 30 is disposed in the sintering furnace 80. The process is carried out.

As a result, in the sintering step, the metal particles 51 are fused only to the inner surface of the metal pipe 10 having the same thermal expansion coefficient.

Next, as illustrated in FIG. 1E, a removal process of removing the insert member 20 from the metal pipe 10 is performed.

That is, in the step of removing the insert member 20, in the sintering process, the metal particles 51 are fused only to the inner surface of the metal pipe 10, so that the insert member 20 is easier from the metal pipe 10. It can be removed.

Through the above-described process, it is possible to manufacture the heat exchange pipe 100 provided with a porous coating layer 40 made of metal particles 51 on the inner surface of the metal pipe 10.

2 is a graph sequentially showing a manufacturing method according to another embodiment of the manufacturing method of the heat exchange pipe 100 according to the embodiment of the present invention. Referring to FIG. 2, another embodiment of a method for manufacturing a heat exchange pipe 100 according to the present invention will be described.

The method of manufacturing the heat exchange pipe 100 according to another embodiment of the present invention is another method of forming the porous coating layer 40 on the inner surface of the heat exchange pipe 100, and the method of manufacturing the heat exchange pipe 100 according to the present embodiment is Unlike the method presented in the above-described embodiment, the insert mold 60 may further include a manufacturing step, a preparation step, and a melting step.

In this embodiment, the insert member 20 is manufactured as part of the insert mold 60. That is, in this embodiment, unlike the above-described embodiment, it is suggested that the insert mold 52 in which the insert member 20 is provided is used.

First, as shown in Figure 2a, the step of manufacturing the insert mold 60 is performed.

At this time, the insert mold 60, the insert member 20 and the insert body 20 is formed integrally with the metal pipe 10, the mold body portion having an insertion space portion 61 can be inserted (62). Here, the insertion space portion 61 may be formed to surround the insert member 20.

Next, a process of forming the space portion 30 is performed.

That is, the manufacturer inserts the metal pipe 10 into the insert member 20 provided in the insert mold 60 to form a space portion 30 for filling the coating layer forming material.

Specifically, when the metal pipe 10 is inserted into the insert member 20, the metal pipe 10 is seated in the insertion space portion 61 provided in the insert mold 60, the A space portion 30 is formed between the inner surface of the metal pipe 10 and the outer surface of the insert member 20.

Next, as shown in Figure 2b, a process of preparing the coating layer forming material is performed.

On the other hand, the coating layer forming material of another embodiment according to the present invention may further include polymer particles 52 to ensure the fluidity of the coating layer forming material. At this time, the polymer particle 52 is included in the coating layer forming material is included in order to secure the fluidity in the process of filling the spacer 30 with the metal particle 51 so that it can be filled better. .

That is, in the preparation step, the process of mixing the metal particles 51 and the polymer particles 52 by agitation is performed. As a result, a mixture of the metal particles 51 and the polymer particles 52 is made. Lose.

Next, as illustrated in FIG. 2C, a filling process for filling the mixture in the space part 30 is performed.

At this time, the process of filling the mixture of the metal particles 51 and the polymer particles 52 in the space portion 30 may be performed by an injection process.

Next, although not shown, a removal process is performed to remove the insert mold 60 from the filled metal pipe 10 of the mixture.

Next, as shown in Figure 2d, a melting process is performed to melt the polymer particles in the mixture filled on the inner surface of the metal pipe 30.

Specifically, the melting process is performed in the melting container 72 in which the melting space 71 is provided. That is, the manufacturer arranges the metal pipe 10 filled with the mixture in the melting space 71 and then supplies the solvent 70 to melt the polymer particles 52. Through the melting process, a significant portion of the polymer particles 52 in the mixture are removed.

Next, as shown in Figure 2e, the process of sintering the mixture is performed.

The sintering process is performed in a sintering furnace 80 provided with a sintering space 81. That is, the manufacturer will sinter the metal particles 51 in a state where the insert mold 60 is placed in the sintering space 81. Through this process, the polymer not removed in the melting process is removed and the metal particles 51 are fused to the inner surface of the metal pipe 10.

Through the above-described process, a heat exchange pipe 100 having a porous coating layer 40 made of metal particles 51 on the inner surface of the metal pipe 10 may be manufactured.

After the porous coating layer 40 is formed on the inner surface of the metal pipe 10, a process of sealing one end of the metal pipe 10 is performed.

Next, the manufacturer injects the working fluid into the inside of the metal pipe 10, and then seals the injection portion of the metal pipe 10. Before the injection portion of the metal pipe 10 is sealed, a process is performed in which the inside of the metal pipe 10 is evacuated by extracting air existing inside the metal pipe 10.

3 is a view showing the structure of a heat exchange pipe 100 according to the present invention. Referring to Figure 3, the detailed configuration of the heat exchange pipe 100 manufactured by the above-described method will be described.

The heat exchange pipe 100 according to the present invention is in contact with an external heat source to condense an evaporation unit 110 for evaporating the working fluid therein, and a condensation for vaporizing the working fluid vaporized in the evaporation unit 110 A metal pipe 10 having a connection portion 130 for connecting the portion 120, the evaporation portion 110 and the condensation portion 120 to form a closed space therein, and the inside of the evaporation portion 110 It includes a porous coating layer 40 that is coated on the surface to promote the boiling of the working fluid.

The evaporation part 110 of the metal pipe 10 is an area for evaporating the working fluid stored therein in the metal pipe 10. When the working fluid in the liquid state in contact with an external heat source having a high temperature is converted into a working fluid in a high temperature gas phase in the evaporator.

The condensation part 120 of the metal pipe 10 is an area for condensing the working fluid in the gaseous state vaporized in the evaporation part 110. When the working fluid of the high temperature gas phase in contact with the low temperature external heat source in the condensation unit 120, it is converted into a working fluid in a liquid state.

The connection part 130 is an area provided between the condensation part 120 and the evaporation part 110 to connect the condensation part 120 and the evaporation part 110. At this time, in the connection part 130, heat exchange is not performed, and the working fluid of the liquid phase and the gas phase coexist, and the working fluid in the gas state evaporated in the evaporation part 110 flows, and in the condensation part 120 The condensed liquid working fluid flows.

The porous coating layer 40 is coated on the inner surface of the evaporation unit 110 to promote boiling of the working fluid.

Since the surface area of the porous coating layer 40 contacting the working fluid is increased by a plurality of holes, the heat exchange area with the working fluid is increased, thereby promoting the boiling of the working fluid.

On the other hand, although not shown, a concave-convex flow path groove may be formed on the inner surface of the condensation unit 120 so that the condensed working fluid flows well into the evaporation unit 110. The concave-convex flow path groove expands a heat exchange area with an external low-temperature heat source, and also functions to promote condensation of the working fluid.

The heat exchange pipe 100 is configured as described above, when heat is applied to the evaporator 110, the working fluid evaporates from the evaporator 110, and steam is passed through the connection unit 130 due to a difference in vapor pressure, and thus, the condensation unit ( 120).

At this time, the porous coating layer 40 provided in the evaporator 110 may promote the boiling of the working fluid accommodated in the evaporator 110 to improve heat exchange performance.

The moved steam condenses in the condensation unit 120 and the latent heat of condensation is discharged to the outside. The condensed working fluid flows through the inner wall of the metal pipe 10 by gravity, passes through the connection part 130 and flows back into the evaporation part 110 to exchange heat.

4 is a graph showing a comparison of the thermal conductivity performance when the porous layer is not formed and when the porous coating layer is formed.

As shown in FIG. 4, in the case of a heat exchange pipe having a porous coating layer, a difference (ΔTsat) between the surface temperature of the heat exchange pipe exposed to an external heat source and the saturation temperature at which the working fluid boils occurs (ΔTsat) is not provided with a porous coating layer. It can be seen that boiling of the working fluid occurs even though it is smaller than the heat exchange pipe of.

It can be seen that the heat exchange pipe formed with the porous coating layer manufactured by the method of manufacturing the heat exchange pipe according to the present invention has less heat resistance than conventional heat exchange pipes without a porous coating layer, thereby promoting boiling.

For example, in order to extract the same heat flux (q") 100 (W/cm2), the difference (ΔTsat) between the surface temperature of the heat exchange pipe and the saturation temperature at which boiling of the working fluid occurs is about 2.5 degrees. , Conventional heat exchange pipe should be about 20 degrees.

That is, it can be seen that more heat sources must be supplied because the surface temperature of the conventional heat exchange pipe is about 17.5 degrees higher than that of the present invention for extracting the same heat.

As a result, as the porous coating layer 40 is provided in the heat exchange pipe, it can be seen that heat resistance is reduced and heat exchange performance is significantly improved by promoting the boiling of the working fluid contained in the evaporator.

5 is a graph showing the relationship between the coating thickness and the heat transfer coefficient of the porous coating layer according to the present invention. Referring to FIG. 5, the relationship between the coating thickness of the porous coating layer and the heat transfer coefficient will be described as follows.

Specifically, FIG. 5 measures the heat transfer coefficient according to the thickness of the porous coating layer, normalizes the thickness of the porous coating layer dimensionlessly based on the optimum thickness having the first heat transfer coefficient having the highest heat transfer coefficient, and heat transfers The coefficient is a graph showing the normalized value based on the first heat transfer coefficient.

Referring to Figure 5, it can be seen that the porous coating layer has the best coating thickness with the best heat transfer performance.

Specifically, when the thickness of the porous coating layer is smaller than the optimum thickness, the degree of heat resistance by the porous coating layer to promote boiling of the working fluid is weak, and when it is thicker than the optimum thickness, the working fluid boils and exits the porous coating layer. Flow resistance occurs, and the heat transfer performance of the heat transfer pipe is deteriorated.

As a result, the thickness of the porous coating layer is preferably designed to have an optimum thickness, and the optimum range of the thickness of the porous coating layer is preferably formed within 100 to 300 μm.

Meanwhile, the optimum thickness of the porous coating layer is set differently according to the size of the metal particles forming the porous layer coating layer. For example, when the metal particles have a first particle size, the optimum thickness of the porous coating layer is the first set thickness, and when the metal particles have a second particle size larger than the first particle size, the optimum thickness of the porous coating layer If is a second set thickness, the first set thickness is preferably set to be thinner than the second set thickness.

Because, the smaller the size of the metal particles, the smaller the size of the pores formed in the porous coating layer, so the surface area in contact with the working fluid increases, and when the surface area with the working fluid exceeds an optimal range, the flow This is because the resistance increases and the thermal resistance increases.

6 is a view schematically showing a heat recovery system using a heat exchange pipe according to the present invention. Referring to Figures 3 and 6, the detailed configuration of the heat recovery system of the present invention is as follows.

The heat recovery system according to the present invention includes a heat exchange pipe 100 provided with a porous coating layer 40, a heat exchange body 200, and a space partition member 300.

The heat exchange body 200 has a first side wall 201 and a second side wall 203 for installing the heat exchange pipe 100. At this time, the first sidewall 201 and the second sidewall 203 may be disposed at a predetermined distance apart along the longitudinal direction of the heat exchange pipe 100.

The space partition member 300 is installed on the heat exchange body 200, and heat exchanges between the first heat exchange space 210 for heat exchange with the fluid discharged from the waste heat source and the heating target fluid introduced from the outside. The second heat exchange space part 230 is independently partitioned.

At this time, the free end of the evaporation part 110 of the heat exchange pipe 100 is fixed on the first sidewall 201 forming the first heat exchange space part 210, and condensation of the heat exchange pipe 100 The free end of the portion 120 may be fixed on the second sidewall 203 forming the second heat exchange space portion 230.

The connection portion 130 of the heat exchange pipe 100 is installed in a state penetrating the space partition member 300.

Meanwhile, the heat recovery system is disposed between the heat exchange pipe 100 and the space partition member 300 to prevent the first heat exchange space 210 and the second heat exchange space 230 from communicating with each other. The sealing member 400 may be further included.

Of course, the present invention is not limited to this, and the heat exchange pipe 100 and the space partition member 300 may be sealed through welding.

On the other hand, the free end of the evaporation unit 110 of the heat exchange pipe 100 is preferably installed lower than the free end of the condensation unit 120 based on the ground on the heat exchange body 200. This is to enable the working fluid condensed in the condensation unit 120 to flow to the evaporation unit 110 by its own weight.

The operation process of the heat recovery system of the present invention as described above is as follows.

The high temperature fluid discharged from the waste heat source flows into the first heat exchange space part 210 of the heat exchange body 200 and contacts the evaporation part 110 of the heat exchange pipe 100 in which a liquid working fluid is embedded. This is done.

At this time, the working fluid in contact with the porous coating layer 40 provided in the evaporation unit 110 is evaporated, and the evaporated working fluid is moved to the condensation unit 120 via the connection unit 130.

At this time, the external fluid having a low temperature flowing into the second heat exchange space portion 230 of the heat exchange body 200 and the working fluid in the gaseous state are exchanged to condense the working fluid in the gaseous state into a liquid state.

Next, the working fluid condensed in a liquid state is moved to the evaporation unit 110 on the inner surface of the heat exchange pipe 100. At this time, since the condensation unit 120 is at a higher position relative to the ground than the evaporation unit 110, the condensed working fluid moves to the evaporation unit 110 by gravity.

By repeating this process, the heat recovery system can recover heat from the fluid discharged from the waste heat source.

As a result, it is possible to efficiently recover heat from the fluid discharged from the waste heat source by using a heat exchange pipe having a porous coating layer, thereby increasing energy efficiency. The recovered heat can be used as a heat source supplied to an external heating device or the like.

Although the preferred embodiments of the present invention have been described with reference to the drawings as described above, those skilled in the art may vary the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It can be modified or changed.

10: metal pipe 11: hollow
20: insert member 30: space
40: porous coating layer 51: metal particles
52: polymer particles 60: insert mold
61: insertion space portion 62: mold body portion
70: solvent 100: heat exchange pipe
110: evaporation unit 120: condensation unit
130: connecting portion 200: heat exchange body
201: first sidewall 203: second sidewall
210: first heat exchange space portion 230: second heat exchange space portion
300: space partition member 400: sealing member

Claims (12)

It is provided to form a porous coating layer on the inner surface of the metal pipe provided with the hollow portion, the insert member disposed inside the metal pipe, and the mold body having an insert space formed integrally with the insert member and into which the metal pipe is inserted An insert mold for forming a space between the inner surface of the metal pipe and the outer surface of the insert member in a state where the metal pipe is seated in the insert space;
Stirring means for preparing the coating layer forming material by stirring the metal particles for forming the porous coating layer and the polymer particles for mixing to form the mixture by mixing with the metal particles to secure the fluidity of the mixture;
Filling means for filling a coating layer forming material including the metal particles and polymer particles in the space portion;
Mold removing means for removing the insert mold from the metal pipe filled with the coating layer forming material on the inner surface; And,
A melting container capable of melting polymer particles in the coating layer forming material through a solvent supplied to the melting space, wherein a metal pipe filled with the coating layer forming material is disposed on an inner surface in a melting space formed therein;
It includes a sintering furnace having a sintering space for sintering the metal particles,
The insertion space portion is formed in the form of a groove surrounding the insert member,
In the sintering furnace, the metal particles are fused on the inner surface of the metal pipe to form the porous coating layer, and the larger the size of the metal particles, the larger the thickness of the porous coating layer is formed, and the thickness of the porous coating layer is 100 μm. ~ 300㎛ heat exchange pipe manufacturing apparatus characterized in that. According to claim 1,
The metal pipe and the metal particles are made of any one of copper or stainless steel material, the insert member is a heat exchange pipe manufacturing apparatus characterized in that a carbon rod formed of a carbon material is used. delete delete delete According to claim 1,
The filling means is a heat exchange pipe manufacturing apparatus characterized in that the filling of the coating layer forming material in the space through an injection process. delete According to claim 1,
In the melting container, a part of the polymer particles in the coating layer forming material is melted, and in the sintering furnace, the metal particles are sintered and at the same time, the remaining part of the polymer particles that are not melted in the melting container in the coating layer forming material is removed. Heat exchange pipe manufacturing equipment. In the heat exchange pipe produced by the manufacturing apparatus of the heat exchange pipe according to any one of claims 1, 2, 6 and 8,
It has an evaporation part for evaporating the working fluid in contact with an external heat source, a condensation part for condensing the gaseous working fluid vaporized in the evaporation part, and a connection part for connecting the evaporation part and the condensation part. A metal pipe forming an enclosed space; And,
A heat exchange pipe comprising; a porous coating layer coated on the inner surface of the evaporator to promote boiling of the working fluid. A heat exchange pipe according to claim 9;
A heat exchange body having a first side wall and a second side wall for installing the heat exchange pipe;
A space partition member installed in the heat exchange body to independently partition a first heat exchange space part for heat exchange with fluid discharged from a waste heat source, and a second heat exchange space part for heat exchange with a heating target fluid flowing from the outside; It includes,
The free end of the evaporation portion of the heat exchange pipe is fixed on the first side wall forming the first heat exchange space portion, and the free end of the condensation portion of the heat exchange pipe is fixed on the second side wall forming the second heat exchange space portion. It works,
The heat recovery system, characterized in that the connection portion of the heat exchange pipe passes through the space partition member. The method of claim 10,
The heat recovery system, characterized in that the free end of the evaporation unit is installed lower than the free end of the condensation unit based on the ground on the heat exchange body. The method of claim 10,
And a sealing member disposed between the heat exchange pipe and the space partition member to further prevent the first heat exchange space part and the second heat exchange space part from communicating with each other.

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