KR100364048B1 - A heat exchanger - Google Patents

Abstract

The present invention is a heat transfer apparatus for performing heat transfer by heating a pipe, the working fluid is deposited on the heat pipe after the wick is installed in the heat pipe is filled with the working fluid vaporized working fluid deposited in the wick of the heating part is evaporated while moving to the whole The heat transfer is performed to the heat pipe by latent heat, and when the heat transfer is completed, the evaporated working fluid is condensed and is sucked back into the wick through the capillary phenomenon and vaporized by the heat source, and heat is applied to the heat pipe by repeating the above operation. The present invention relates to a heat exchange device for transferring.

Description

Heat Exchanger {A HEAT EXCHANGER}

The present invention is a heating device using a heat generating pipe by the flow of hot water, etc., excellent thermal efficiency and uniformity through the heat conduction characteristics of the heat pipe using the wick and the working fluid which is partially filled in the inside of the heat pipe and deposited therein It relates to a heat exchange device that makes it easy to use a temperature distribution and unlimited size or shape for ondol heating.

In the known heating apparatus, heating pipes made of copper or plastic materials are bent into a L-shape in order to improve the compactness in a predetermined space, and high temperature and high pressure are supplied to the inside of the heating pipes through a boiler or the like. The heating water in the state flows, and the heating water in the high temperature state is discharged to the outside (ondol), and the heating water which has discharged heat while passing through the heating pipe is circulated again to the boiler to become a high temperature and high pressure state, and the operation It will be repeated heating.

However, in the heating device as described above, the fluid movement passage of the heating pipe, which is installed to improve the compactness in a certain region, becomes long, so that the temperature decreases in the latter part of the passage, so that the entire heating cannot be performed uniformly. Increasing costs are incurred.

In addition, there is a risk of breakage due to the complicated structure of the pipe, which is composed of a plurality of bends, and the like, as the heat transfer by water causes corrosion and consequent leakage, and the risk of freezing, as well as breakage by water pressure. Is generated, and a plurality of scales are generated by water, which significantly reduces the thermal conductivity of the heating pipe.

Conventional heating apparatus for solving the above problems, as shown in Figure 1, the working fluid 30 is filled in the inner diameter side of the heat pipe 20 is installed so that one end is in contact with the heat source 10, The metal mesh 40 in which the working fluid 30 is deposited is installed in the entirety of the heat pipe 20, so that the metal mesh 40 in which the working fluid 30 is deposited is a heat source (2) in the heat pipe 20. 10) is vaporized continuously by the heat source when it is in contact with the heat pipe to perform heat transfer throughout the heat pipe 20, the working fluid to be vaporized is condensed after performing the heat transfer to be deposited on the metal mesh 40 again, the The heat transfer is performed by repeating the operation.

However, the heating device as described above, the metal mesh 40 is installed inside the heat pipe 20 as a whole, the metal mesh 40 is increased as well as the production cost accordingly increases, If the length is long, there is a disadvantage in that the installation process to make the metal mesh 40 is in close contact with the entire inner wall of the heat pipe 20 occurs.

In addition, the resistance caused by the movement of the evaporated gas is generated by the metal mesh 40 installed on the entire inner wall of the heat pipe 20 to significantly reduce the heat transfer efficiency, the working fluid 30 is the metal mesh 30 There is a problem that the deposition is always in the state to be deposited and the evaporation operation is performed at the same time by the condensation of the working fluid 30 in all parts of the metal mesh 30 to reduce the evaporation efficiency.

The present invention is to improve the various problems as described above, the object of the present invention is to completely prevent corrosion and breakage of the heating pipe and the leakage accordingly, and prevent the occurrence of scale in the heating pipe, thereby reducing efficiency or damage It prevents and maintains the temperature of the entire floor where the heating pipe is discharged uniformly, and because the high temperature fluid does not flow in the heating pipe, it can increase the capacity of the boiler at the minimum flow rate. It is to provide a heat exchanger to increase the efficiency.

1 is a schematic diagram showing a conventional heat pipe for heat exchange.

2A and 2B are cross-sectional schematic diagrams illustrating heat pipes for heat exchange according to the present invention;

Figure 3a, b is a schematic diagram showing a heat pipe for heat exchange according to another embodiment of the present invention

Figure 4a, b, c is a cross-sectional view of the heat pipe according to another embodiment of the present invention

5a, b, c are schematic views showing the mounting state of the heat pipe according to the present invention;

Figure 6 is a graph showing the temperature state over time of the heat pipe according to the present invention in comparison with the conventional

* Description of the symbols for the main parts of the drawings *

210 ... Operating fluid 310A ... Micro groove

310B ... Week 320 ... Carburetor

400 ... connection core

As a technical configuration for achieving the above object, the present invention, a heat pipe formed to have a closed space in a vacuum state,

A working fluid filled with a certain liquid to allow heat transfer by vaporization inside the heat pipe,

A heat exchange device in which a working fluid is filled into an inside of a heat pipe having a vacuum-closed space, and a vaporized portion provided with a wick is installed in a portion of the inside of the heat pipe, wherein the heat pipe has at least a heat source with respect to its entire length. A wick having a length of 1 to 30% is mounted so that a part is folded, and the wick inserted into the heat pipe has a 100 to 300 mesh so as to prepare a heat exchanger having a configuration of winding 1 to 5 times. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic cross-sectional view showing a heat pipe for heat exchange according to the present invention, Figure 3 is a schematic diagram showing a heat pipe for heat exchange according to another embodiment of the present invention, Figure 4 A, B, C Figure 5 is a cross-sectional state diagram of a heat pipe according to another embodiment, Figure 5 A, B is a schematic diagram showing the mounting state of the heat pipe according to the present invention, Figure 6 is a temperature state over time of the heat pipe according to the present invention As a graph shown in comparison with the related art, the present invention comprises a heat pipe 100, a working fluid 210, and a vaporization unit 320. The heat pipe 100 forms a predetermined space on an inner diameter side thereof. A sealed space (not shown) in a vacuum state is integrally formed to seal both sides, and the heat pipe 100 is made of a copper or stainless metal pipe, and has a straight or U-shape and various deformation shapes. This The working fluid 210 installed inside the heat pipe 100 may be an alcohol that is a strong vaporizing material so that heat transfer is possible through evaporation latent heat. The working fluid 210 made of acetone or the like is inserted into the heat pipe 100 by 5 to 30%.

The vaporization part 320 for vaporizing the working fluid 210 is installed to be located on one side of the contact portion of the heat source inwardly of the heat pipe 100, the micro groove 310A or the inner diameter side which is integrally formed on the inner diameter side. It is made as a wick 310B to be inserted, and the microgroove 310A or the wick 310B are installed separately or integrally, respectively.

In addition, the wick 310B or the fine groove 310A is formed to have a length of 1 to 30% with respect to the entire length of the heat pipe 100, and the wick 310B is made of a material of the heat pipe 100. According to the same material (copper or bronze material is used in the case of a high thermal conductivity copper material, stainless material is made of stainless material).

At this time, as shown in FIG. 2B, when the connection wick 400 is integrally connected to the wick 310B partially installed in the heat pipe 100 and fixed to the lower end of the heat pipe 100, the heating part is slightly smaller than the condensation part. Even when high, the working fluid 210 condensed in a liquid state is continuously sucked into the wick 310B while being sucked into the connection wick 400, so that continuous vaporization and condensation are continuously performed repeatedly.

In addition, when the partial wick 310B is installed in the U-shaped heat pipe 100, each end portion of the wick 310B is disposed at the contact portion of the heat source and is integrally connected as the connection wick 400. The connecting wick can be twisted into multiple strands such as fiber yarn, optical fiber, iron wire, etc., with smooth osmotic pressure, pulp, and chemical sponge.

Referring to the operation of the present invention made of such a configuration as follows.

As shown in Figures 2 to 6, the heat pipe 100, by forming a predetermined space on the inner diameter side to close both sides of the vacuum sealed space 110 is formed integrally, where the heat pipe 100 consists of a metal pipe of copper or stainless steel which is excellent in thermal conductivity.

In addition, the heat pipe 100 is installed to be in contact with a heat source through which electrical heat or a high temperature fluid flows to perform heat transfer, and the heat pipe 100 is formed in a straight shape to be in contact with the heat source or U-shaped, respectively. An end of the heat pipe 100 formed in the shape is connected to contact around the heat source, the shape of the heat pipe 100 can be installed by the user arbitrarily deformed according to the installation place.

In addition, the inside of the heat pipe 100 is a working fluid 210 made of alcohol or acetone, etc., which is a strongly vaporizable material so as to conduct heat transfer through evaporation latent heat (Latent Heat) 5 inside the heat pipe 100. ~ 30% filled.

At this time, when the amount of the working fluid 210 filled in the heat pipe 100 is 5% or less, it is positioned only in the lower portion of the heat pipe 100 installed in a horizontal state, making contact with the wick 310B difficult, thereby maintaining continuous operation. It becomes impossible.

In addition, when the amount of the working fluid 210 is 30% or more, the working fluid 210 absorbs the heat transferred to the heat pipe 100 so that the temperature is lowered and the rate of vaporization is lowered as well as that of the vaporized gas. Resistant to transport reduces heat transfer efficiency to 50% or less.

The vaporization unit 320 for vaporizing the working fluid 210 is made to be installed in the contact portion of the heat source to the inside of the heat pipe 100 is made as a fine groove (310A) or wick (310B) or fine groove (310A) or The working fluid 100, which is integrally installed with the wick 310B and is in contact with the wick 310B, is vaporized in an instant by a high temperature transmitted from a heat source to perform heat transfer.

At this time, the vaporization unit 320 is formed to have a length of 1 to 30% of the total length of the heat pipe 100, the wick 310B, the heat pipe 100 is made of copper or copper Bronze material is used, stainless material is made of stainless material, if the wick (310B) is formed to a length of more than 30%, the amount of material is increased to increase the production cost, as well as the manufacturing process itself is difficult to insert the wick (310B) As shown in the lower graph, the thermal efficiency is lowered.

In addition, the U-shaped heat pipe 100 is formed and each of the wick 310B is installed inside the end to be in contact with the heat source, and then the wick 310B is connected as the connection wick 400 to the U-shaped heat pipe 100 The moving fluid 210 filled in the inside of the) is quickly moved to each wick 310B to enable a smooth vaporization.

In addition, the fine groove 310A constituting the vaporization part 320 is formed to a predetermined depth so that the working fluid 210 introduced into the inner portion has a predetermined membrane shape, and is installed separately from the wick 310B or integrally installed. The wick 310B is formed to have a size of 100 to 300 Mesh while being formed at a length of 1 to 30% with respect to the entire length of the heat pipe 100 to perform the evaporation of the working fluid 210. .

When the size of the mesh 310 of the wick 310B is less than 100, evaporation efficiency is reduced due to the reduction of capillary effect, and rapid heat transfer is impossible, and when 300 or more, the vaporization is performed quickly, but the mesh itself is too much. It is difficult to install so as to be in contact with the inside of the heat pipe 100 to be fine, as well as damage caused by heat and breakage during insertion occurs.

As described above, after the wick 310B is installed at the heat source 410 in the heat pipe 100, the working fluid 210 is filled to form a vacuum state, and the heat pipe 100 is heat source ( In contact with 410, the heat pipe 100 on which the wick 310B is inserted is heated by a heat source in a high temperature state.

At this time, the partial wick 310B has a mesh (about 100 to 300) of a certain shape, and vaporizes the working fluid 210 formed in a fine mesh shape on each mesh so that gas is provided in the entire heat pipe 100. The gas having latent heat transfers the latent heat of vaporization to the entire heat pipe 100, and the latent heat radiates heat to the outside of the heat pipe 100.

Subsequently, the gas condenses on the inner diameter side of the heat pipe 100 and collects on the bottom surface, which is a wick 310B inserted into the heat pipe 100 and the cohesive force between the fluids and the action of keeping the fluid horizontal. Evaporation, condensation, and suction of fluid during continuous supply of heat by the heat source 410 by continuously supplying the working fluid 210 through the operation to simultaneously suck and vaporize the wick 310B partially installed by the capillary phenomenon To be run continuously.

In addition, in the case of the U-shaped heat pipe 100, the wicks 310B, which are installed to be positioned at the inner diameter side of the contact portion of the heat source 410, are integrally connected by the connection wick 400 to be deposited on the wicks 310B. When the working fluid 210 to be condensed after evaporation, the condensed working fluid 210 is easily delivered to the wick 310B.

In addition, when the connection wick 400 is connected to the wick 310B partially installed inside the heat pipe 100 and fixed to the lower end of the heat pipe 100, the liquid state is maintained even when the heating part is slightly higher than the condensation part. As the working fluid 210 condensed into the connection wick 400 is continuously transported toward the wick 310B, continuous vaporization and condensation are continuously performed.

In addition, the vaporization unit 320 installed on the inner diameter side of the heat pipe 100 has a plurality of fine grooves 310A so that when the working fluid 210 is sucked into the fine grooves 310A of a predetermined depth, the wick and Has the same effect.

In addition, the vaporization unit 320, the microgroove 310A and the wick 310B is integrally formed to double the effect.

Subsequently, when the heat pipe 100 is installed in a horizontal state, the working fluid 210 that is condensed may keep the water level horizontal by the action of gravity and contact the wick 310B so as to rapidly transfer the fluid. This becomes possible. Example

In the present invention, the inner and outer diameters are 10? And 12 ?, respectively, and a length of 3 m is used, and the wick 310B inserted inside the heat pipe 100 is 10 cm in length. The size of 150mesh was used, and the number of windings was limited to 2 times, and the working fluid 210 was tested using 10% alcohol based on the total volume, and the point was a heat pipe 100 in which T1 was in contact with the heat source. 20 cm, T2 is 90 cm, T3 is 160 cm, T4 is 230 cm, and T5 is 300 cm from the ends of the c).

Tables 1 and 2 measure the temperature of three heat pipes 100, one end of which is installed in contact with the heat source 410 at five points as shown in FIG. 5A, and as a result, about 20% or more as described above. It brought about an increase in efficiency.

In addition, the production cost is reduced by minimizing the amount of the wick 310B, and as shown in FIG. 6, the temperature difference between each part is minimized and rapid heat transfer is possible.

Thus, according to the heat exchange device according to the present invention, the corrosion and breakage of the heating pipe and the leakage accordingly completely prevented, the generation of scale in the heating pipe is prevented, thereby reducing the efficiency or damage, and the heating pipe is disposed The temperature of the entire floor is maintained uniformly, and the high-temperature fluid does not flow in the heating pipe to increase the capacity of the boiler at the minimum flow rate.The heat pipe is rapidly overheated, and the production cost and the defective rate of the heat pipe are remarkably increased. It has an excellent effect of reducing and raising the heating efficiency.

Claims (6)

In a heat exchanger having a vaporization portion in which a working fluid 210 is filled into a heat pipe 100 having a vacuum sealed space, and a wick 310B is mounted on a portion of the heat pipe 100. The working fluid 210 is a refractory fluid having a volume of 5 to 30% with respect to the volume of the inner diameter of the heat pipe 100, and the entire length of the heat pipe 100 so that the working fluid 210 is deposited. At least a portion of the heat source 410 to be folded to have a length of 1 to 30%, wick 310B is wound 1 to 5 times to have a 100 to 300 mesh is inserted into the inside of the heat pipe 100 Heat exchanger characterized in that consisting of. delete delete delete delete delete