KR200242427Y1 - A triple-pipe type heat exchanger adopting high efficiency heat-medium radiator and a boiler adopting the same - Google Patents

Abstract

The present invention relates to a triple tube heat exchanger using a high efficiency heat medium radiator and a boiler device using the same. The triple tube heat exchanger using the high efficiency heat medium heat radiator according to the present invention is operated by circulating the heated primary heat medium oil to heat the secondary heat medium to integrate the heat radiating part and the heat exchange part, and by heating the water by the heated secondary heat medium. A heat exchanger used in a boiler device, which is a heat pipe (primary pipe) through which a heated primary heat medium passes, a closed pipe containing a secondary heat medium, and includes a heat pipe (double pipe) and a heat pipe surrounding the heat medium pipe. The enclosed tube includes a heat exchange water tube (triple tube) in which cold water flows in at one end, is heated by a secondary heat medium in the heat pipe state, and flows out at the other end. According to the present invention, the heat pipe is used as a double pipe to integrate the heat dissipation unit and the heat exchanger unit, simplifying the structure, and amplifying and transferring the heat transfer amount and heat capacity, thereby greatly reducing the heating amount and heating time. have.

Description

A triple-pipe type heat exchanger adopting high efficiency heat-medium radiator and a boiler adopting the same

The present invention relates to a triple tube heat exchanger using a high efficiency heat medium radiator and a boiler using the same. More specifically, the present invention consists of a heat medium tube through which the primary heat medium passes, a heat pipe surrounding the heat medium tube, and a heat exchange water pipe that is converted from low temperature to high temperature while passing water surrounding the heat pipe. The present invention relates to a heat exchanger having a triple tube structure and a boiler device including the heat exchanger.

Heat pipe is produced by injecting a propane-based heat medium (working fluid) having a low boiling point and a large latent heat of evaporation into a metal tube in a vacuum state, and the working fluid easily changes from liquid to vapor under low pressure conditions. It is a device that transfers heat as latent heat during phase change. Heat pipe has a working temperature range of -70 ℃ to 300 ℃ and can be used as an efficient element for general air conditioning and heating, cooling of electronic equipment, waste heat recovery in the middle temperature range, and solar heat collection. The advantage of heatpipes is that they can deliver up to several hundred times the thermal conductivity of copper without a separate power source.

The operating principle of the heat pipe is as follows. The heat pipe is formed by encapsulating a small amount of working metal, which is an evaporation medium, in a vacuum-closed metal and a vacuum. One end of the metal tube is a heating part, and the other end is a heat dissipation part. When heat is applied to the heating part while the working liquid is sealed, the working liquid is evaporated and transferred to the heat radiating part in a vapor state. The vapor reaching the heat dissipating part while releasing heat is condensed again to become the original liquid, and this circulation is repeated. This action results in superheat conduction, where heat is quickly conducted at the same temperature throughout the heatpipe.

Distilled water, methanol, potassium, sodium, mercury, or the like is used as the working liquid enclosed in the heat pipe, and the metal tube is made of Cu, Ni, stainless steel, or the like.

As such, the heat pipe uses only a small amount of working fluid as a heat medium and does not need to circulate a large amount of water, there is no water in the pipe, and there is no fear of corrosion or freezing of the pipe, and the heat pipe itself is a standard product. This simple, low water volume can be used for various boiler facilities, heat exchangers, waste heat recovery devices, etc. because of the advantages of reducing the capacity of the piping and boiler.

The purpose of the present invention is to maximize the advantages of the heat pipe for heat dissipation and heat amplification, the heat transfer process of the complex structure of the general boiler can be composed of a simple and effective triple pipe can produce a high heat capacity compared to the size, heat It is to provide a triple tube heat exchanger using a high-efficiency heat medium radiator capable of amplifying heat transfer by expanding the heat exchange area by spiraling the pipe. In other words, the structure of the boiler is simplified by using a triple tube heat exchanger that can simultaneously achieve the heat dissipation and heat exchange process, and by using the spiral heat pipe, the convective heat transfer rate of the fluid velocity as well as the amplification of the heat transfer due to the expansion of the heat transfer surface are always maintained. It is to provide a triple tube heat exchanger.

Another object of the present invention is to provide a boiler device using the heat exchanger.

1 is a basic configuration of a triple tube heat exchanger according to the present invention

2 is an external view of a heat pipe according to an embodiment of the present invention;

Figure 3a is a cross-sectional view of the subject innovation using the spiral heat pipe

3b is an external view of a spiral heat pipe

Figure 4 is a schematic diagram of a boiler apparatus using a heat exchanger according to the present invention

5a is an application example of a heat exchanger according to the present invention

Figure 5b is a plan view of each stage of the heat exchanger according to the present invention

<Description of Major Symbols in Drawing>

11 Heat pipe, 13 heat pipe, 15 heat exchange water pipe, 21 primary heat exchanger, 23 heating device, 25 circulation pump, 27 heat exchanger, 29 expansion tank

Structure

The triple tube heat exchanger using the high efficiency heat medium heat radiator according to the present invention is a heat exchanger used in a boiler apparatus operated by circulating a heated primary heat medium oil to heat a secondary heat medium, and heating water by the heated secondary heat medium. A heat medium tube through which the heated primary heat medium passes; A closed tube containing a secondary heat medium, comprising: a heat pipe surrounding the heat medium pipe; A tube surrounding the heat pipe, the low temperature is introduced at one end is configured to include a heat exchange water pipe that is heated by the secondary heat medium in the heat pipe and outflow to the other end.

A feature of the present invention is that the heat dissipation part and the heat exchange part are separated from the general boiler system. In other words, in the triple tube structure, the heat pipe and the heat pipe, which are at the center of the triple pipe structure, serve as a radiator, and the heat pipe and heat exchange water pipe, which are the third pipe, act as heat exchangers. In the present specification, the heat dissipation unit and the heat exchange unit are collectively referred to as a heat exchanger.

The heat medium tube or heat pipe can increase the heat transfer area by expanding the heat exchange area by using the spiral structure tube, and promote the forced convection of water to increase the thermal efficiency and reduce the flow rate of the water tank due to the rapid temperature reaction. Can be.

The heat pipe may also be manufactured by attaching a fin tube to the outer diameter of the straight tube by pressing.

The heat exchanger according to the present invention is also characterized in that a plurality of triple tubes are connected in a U-shape to form one stage, and such a plurality of stages are connected up and down. The number of can be 2 to 10, and the number can be selectively selected as necessary.

In addition, the present invention also relates to a boiler apparatus including the heat exchanger, comprising a primary heat exchanger for heating the primary heat medium oil, a circulation pump for circulating the primary heat medium heated by the primary heat exchanger It is characterized by.

Example

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a schematic diagram of a triple tube heat exchanger using a high-efficiency heat medium radiator according to the present invention.

The heat pipe 13 containing the secondary heat medium surrounds the circumference of the heat medium pipe 11 through which the heated primary heat medium passes, and the heat exchange water pipe 15 surrounds the circumference of the heat pipe 13 again. Low temperature water flows in on one side of the tube, and hot water heated by the secondary heat medium in the heat pipe 13 flows out on the other side.

The heat pipe 13 is manufactured by injecting a small amount of propane-based heat medium having a large latent heat of evaporation into a metal tube in a vacuum state in which both ends are clogged. In the latent heat at the time of phase change, heat is transferred to the water passing through the heat exchange water pipe 15.

2 is an external view of a heat pipe 13 which is a secondary tube of an embodiment of a heat exchanger according to the present invention, showing that a fin tube is attached to the outer circumferential surface of a straight tube by a compression method. Of course, it is also possible to use a straight tube as it is as the heat pipe 13, and copper or stainless is preferable as the material of the heat pipe 13, but is not limited thereto.

3 shows another embodiment of the heat exchanger according to the present invention, in which the heat pipe 13 is spiraled (spiral). FIG. 3A is a cross-sectional view of a triple tube heat exchanger in which the heat pipe 13 is spiraled, and FIG. 3B is an external view of the spiral heat pipe. By manufacturing the heat pipe 13 in a spiral shape, it is possible to increase the heat exchange area without increasing the volume as compared with the straight type.

As an embodiment of the heat exchanger according to the present invention, not only the heat pipe 13 but also the heat medium tube 11, which is the primary tube of the triple tube, may be spiraled. By doing so, heat transfer between the heat pipe 13 and the heat medium tube 11 can be maximized.

Figure 4 is a schematic diagram of a boiler apparatus using a heat exchanger according to the present invention.

The primary heat exchanger 21 contains ordinary heat medium oil and is heated by a heating device 23 that uses fuel such as electricity, gas, and oil. The primary heat medium (oil) heated in the primary heat exchanger 21 is circulated through the heat medium pipe 11 by the action of the circulation pump 25 to instantaneously heat the heat pipe 13, and the heat is heat-exchanged. The low temperature water, which is transmitted to the water passing through 15 and introduced into one end of the heat exchange water pipe 15, becomes hot water and flows out to the other end, and the high temperature water that flows out is used for heating or hot water supply.

Application example

Triple tube heat exchanger using a high-efficiency heat medium radiator according to the present invention can be implemented in a variety of applications. Figure 5a is a view showing an application embodiment of the heat exchanger according to the present invention.

In this embodiment, the heat exchanger has a three-stage structure, and in each stage, a plurality of triple tubes are connected in a U shape.

5B shows the shape of the plane of each stage. When the heat medium oil is supplied to the primary heat exchanger 21 in the expansion tank 29, the primary heat exchanger 21 heats the oil, and the heated primary heat medium (oil) is operated by the operation of the circulation pump 25. The heat pipe 13 is heated while passing through the heat medium pipe 11, and the heated heat pipe raises the temperature of the water passing through the heat exchange water pipe 15.

The heat exchanger according to the present invention has a structure of a triple tube, and in this embodiment, the triple tube is connected in the form of a plurality of U-shapes to form a single stage, and these stages have a form of overlapping up and down. It is apparent to those skilled in the art that the number of triple tubes and the upper and lower stages for each stage can be variously designed according to the purpose, capacity, and use of the boiler, and the triple tube is not necessarily limited to the U-shape.

When the number of stages is 10, and the number of stages is 3, 30 triple pipes are connected to each other, which greatly reduces the structure and installation area compared to conventional boilers, and enables the production of high efficiency and high performance boilers. .

According to the present invention, the following effects are obtained.

First, the heat transfer process of the complicated structure of the general boiler is composed of a simple and effective triple pipe integrating the heat dissipation unit and the heat exchanger unit to produce a high heat capacity compared to the size.

Second, by using a spiral (spiral) structure as a heat pipe or heat pipe, the heat exchange area can be enlarged to amplify the heat transfer amount.

Third, as a triple tube structure, not only heat transfer is received from the primary and secondary tubes without heat loss, but also the heat transfer is accelerated by the external shape of the secondary tube of the spiral structure, so that the heat capacity can be amplified and transferred quickly. The time can be greatly reduced.

Fourth, by using the spiral heat pipe injected with the secondary heat medium without direct heat transfer from the primary heat medium, the heating time can be shortened by about 1/3 by rapid temperature rise, and can react quickly to the instant load. Excellent amplification of area and heat capacity, it can greatly save capacity and installation space of hot water tank.

Claims (9)

In a heat exchanger used in a boiler apparatus operated by circulating a heated primary heat medium oil to heat a secondary heat medium, and by heating water by the heated secondary heat medium, Heat pipe (11) through which the heated primary heat medium passes, As a closed tube containing a secondary heat medium, the heat pipe 15 surrounding the heat medium pipe 13, The tube surrounding the heat pipe 13, characterized in that it comprises a heat exchange water pipe 15 is introduced into the other end after the low-temperature water flows from one end is heated by the secondary heat medium in the heat pipe 15 Triple tube heat exchanger using high efficiency heat medium radiator. The method of claim 1, The heat pipe 13 is a triple tube heat exchanger using a high-efficiency heat medium radiator, characterized in that the straight tube. The method of claim 1, The heat pipe (13) is a triple tube heat exchanger using a high-efficiency heat medium radiator, characterized in that the fin tube is attached to the outer circumferential surface of the straight tube by a compression method. The method of claim 1, The heat pipe 13 is a triple tube heat exchanger using a high-efficiency heat medium radiator, characterized in that having a spiral shape. The method of claim 1, The heat medium tube (11) and the heat pipe (13) is a triple tube heat exchanger using a high-efficiency heat medium radiator, characterized in that having a spiral shape. The method according to any one of claims 1 to 5, A plurality of triple tube heat exchanger using a high-efficiency heat medium radiator, characterized in that by connecting a plurality of the triple tube in a U-shape to form a single stage, the plurality of stages are connected up and down. The method of claim 6, A triple tube heat exchanger using a high efficiency heat medium radiator, characterized in that the number of triple tubes of each stage and the number of upper and lower stages are 2 to 10. A boiler apparatus comprising a heat exchanger (27) according to any one of claims 1 to 5, Primary heat exchanger 21 for heating the primary heat medium oil, And a circulation pump (25) for circulating the primary heat medium heated by the primary heat exchanger (21) through the heat medium pipe (11) in the heat exchanger (27). A boiler device comprising a heat exchanger (27) according to claim 6, Primary heat exchanger 21 for heating the primary heat medium oil, And a circulation pump (25) for circulating the primary heat medium heated by the primary heat exchanger (21) through the heat medium pipe (11) in the heat exchanger (27).