US20080060788A1

US20080060788A1 - Heat exchanger for a cooling system

Info

Publication number: US20080060788A1
Application number: US11/899,831
Authority: US
Inventors: Kyung Suk Kong
Original assignee: Daeil Cooler Co Ltd
Current assignee: Daeil Cooler Co Ltd
Priority date: 2006-09-07
Filing date: 2007-09-06
Publication date: 2008-03-13
Also published as: JP2008064451A; CN100523699C; CN101140146A; JP4480747B2; KR100741162B1

Abstract

A heat exchanger for a cooling system, suitable for a compact heat exchanging system having a compressor and a radiator by minimizing an occupied volume of the heat exchanger, including a piping structure simplified by integrating a cooling medium injection pipe and a cooling medium exhaust pipe into a single piping structure, thereby preventing water leakage through a pipe connecting portion. Cooling performance of a cooling system having the heat exchanger is improved and thermal efficiency per an electric heat area in the heat exchanger is highly enhanced by disposing a spiral partition between a heat exchanging part, a heat exchanger pipe and a capillarity tube in a main body of the heat exchanger so as to guide a mixed flow of water and cooling medium in the creation of the vortex or swirling motion.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates generally to a heat exchanger for a cooling system, which may be commonly used for a compact cooling equipment, in particular to a heat exchanger for a cooling system capable of providing a compact heat exchanging system having a compressor and a radiator by minimizing an occupied volume of the heat exchanger, which is capable of simplifying a piping structure by integrating a cooling medium injection pipe and a cooling medium exhaust pipe into a single piping structure, which is capable of preventing water leakage through a pipe connecting portion, and which is capable of improving a cooling performance of the cooling system having the heat exchanger and capable of highly enhancing a thermal efficiency per an electric heat area in the heat exchanger by disposing a spiral partition between a heat exchanging part, a heat exchanger pipe and a capillarity tube in a main body of the heat exchanger so as to guide a mixed flow of water and cooling medium in the creation of the vortex or swirling motion. In which a heat exchanging part and a passage for exhausting cooling water are disposed along the rod-shaped main body of the heat exchanger thereby resulting in the formation of a “U”-shaped channel. In which the capillarity tube for injecting cooling medium is disposed in the heat exchanger pipe at a hollow, double-barreled tube type. In which an end of the pipe for exhausting cooling medium is inserted into the inlet of the heat exchanger pipe together with the capillarity tube.
2. Description of the Related Art
Conventionally, a variety of cooling equipments have been used for a fishing port for raising an aquarium fish at home or a fish preserve for storing a live fish or all sorts of marine products. The cooling equipments have a function of for maintaining the degree of freshness by maintaining a temperature of water regularly, which is filled in the fishing port or in the fishing preserve. The cooling equipment intended to accomplish this purpose comprises a cooling system of small scale in comparison with commercial or industrial equipments of large scale.
A conventional heat exchanger 100 as shown in FIG. 1 has been used for the cooling equipment of small scale. A cooling water inlet 111 and a cooling water outlet 112 are connected to an upper side of the heat exchanger 100 having a box-shaped main body 110, respectively. A cooling medium inlet pipe 113, a cooling medium out pipe 114 and a sensor connecting pipe 116 are installed at a front side of the main body 110. A sensor 117 for measuring a temperature of water is inserted into the sensor connecting pipe 116 together with an electric wire 118.
A heat exchanger pipe 115 is wounded in a spiral manner and then it is inserted into the main body 110. One end of the heat exchanger pipe 115 is connected with the cooling medium inlet pipe 113 and the other end of the heat exchanger pipe 115 is connected with the cooling medium out pipe 114. The cooling medium can flow through the heat exchanger pipe 115. Meanwhile, a certain space for storing cooling water is formed in the main body 110 to the outside of the heat exchanger pipe 115. A sensor tip of the sensor 117 protrudes toward said space so as to measure the temperature of water.
As shown in FIG. 2, the conventional heat exchanger 100 as described above is inserted into a casing 210 of a heat exchanging system 200 together with a compressor 220 and a radiator 230 having a radiating fan 240. The cooling medium inlet pipe 113 and the cooling medium out pipe 114 are connected with the radiator 230 and the compressor 220, respectively. One hose 119 for introducing cooling water is connected with the cooling water inlet 111. Likewise, other hose 119 for exhausting cooling water is connected with the cooling water outlet 112.
If a cooling medium flows through the heat exchanger pipe 115 in the main body 110 due to execution of cooling cycle with the aid of the compressor 220, the water introduced into the main body 110 from the cooling water inlet 111 is cooled at a predetermined temperature. Thereafter, the cooled water is exhausted through the cooling water outlet 112 to the outside of the heat exchanger 100. Consequently, cooling water can be supplied to the fishing port for raising an aquarium fish at home or the fish preserve for storing a live fish or all sorts of marine products.
One drawback of using the conventional heat exchanger 100 is that the box-shaped main body 110 may require a relative large volume for installing it in the heat exchanger 100, thereby resulting in an increase of total dimensions of the casing 210. In other words, when the heat exchanger 100 is used as a constitutional element for the heat exchanging system 200 together with the compressor 220 and the radiator 230, then it is hard to provide a compact heat exchanging system that is required to be employed in a certain cooling equipment of small scale.
Another drawback of this conventional heat exchanger 100 is that water introduced into the main body 110 through the cooling water inlet 111 slowly flows and is slow in heat exchange relationship with the heat exchanger pipe 115, and therefore the water presented at a certain position to the outside of the heat exchanger pipe 115 does not have to be subjected to a cooling operation. Unfortunately a surface of the heat exchanger pipe 115 does have to be subjected to a cooling operation. This inevitably causes a deterioration of the cooling performance provided by the heat exchanger 100 in the cooling system.
On the basis of the above-mentioned consideration of the above point, a method for installing the heat exchanger pipe 115 by winding it up at several ten times along an interior of the main body 110 in a spiral manner so as to increase an electric heat area has recently been used.
However, this inevitably causes a waste of stainless steel or titanium that is conventionally used as a basic material for producing the heat exchanger pipe 115. Furthermore, since the process for bending the heat exchanger pipe 115 in a spiral manner is relatively complicated, the volume to be occupied by the heat exchanger 100 is readily increased. Furthermore, a long time occurs to perform the process and thereby it has poor productivity.
On the basis of the above-mentioned consideration of the heat exchanger 100's characteristics, it is required to obtain a complete waterproofing at a connecting portion of the pipes, such as the cooling water inlet 111, the cooling water outlet 112, the cooling medium inlet 113 and the cooling medium outlet 114, so as to use the heat exchanging system 200 with safe.
Furthermore, on the basis of consideration of basic water leakage prevention, it is most preferable to minimize the size of the connecting portion of the pipes under the same waterproofing condition.
Since the hose 119 made of a soft material is respectively connected with the cooling water inlet 111 and the cooling water outlet 112, then a work for sealing the connecting portion there between is simple. However, since the cooling medium inlet 113 and the cooling medium outlet 114 respectively comprise a metal pipe unlike the main body 110, then the work for sealing the connecting portion is troublesome. The leakage of cooling water in the heat exchanger 100 is mainly occurred at the connecting portion of the pipes.
On the basis of the above-mentioned consideration of the above point, what is needed is an improved heat exchanger that basically solves the problem related to the cooling water leakage by minimizing the connecting portion of pipes for allowing cooling medium to flow there through, which is capable of providing an excellent cooling performance, which has a compact structure adapted to be employed in a cooling equipment of small scale, and which gives a considerable reduction in costs.

SUMMARY OF THE INVENTION

The present invention solves the foregoing problems. It is an object of the present invention to provide to a heat exchanger for a cooling system capable of providing a compact heat exchanging system having a compressor and a radiator by minimizing an occupied volume of the heat exchanger, which is capable of simplifying a piping structure by integrating a cooling medium injection pipe and a cooling medium exhaust pipe into a single piping structure, and which is capable of preventing water leakage through a pipe connecting portion.
In which a heat exchanging part and a passage for exhausting cooling water are disposed along the rod-shaped main body of the heat exchanger thereby resulting in the formation of a “U”-shaped channel. In which the capillarity tube for injecting cooling medium is disposed in the heat exchanger pipe at a hollow, double-barreled tube type. In which an end of the pipe for exhausting cooling medium is inserted into the inlet of the heat exchanger pipe together with the capillarity tube.
Furthermore, it is other object of the present invention to provide to a heat exchanger for a cooling system capable of improving a cooling performance of the cooling system having the heat exchanger and capable of highly enhancing a thermal efficiency per an electric heat area in the heat exchanger by disposing a spiral partition between a heat exchanging part, a heat exchanger pipe and a capillarity tube in a main body of the heat exchanger so as to guide a mixed flow of water and cooling medium in the creation of the vortex or swirling motion.
In order to achieve these objects, the present invention provides a heat exchanger for a cooling system comprising a main body to which a cooling water inlet and a cooling water outlet are connected, in which a heat exchanging pipe for circulating a cooling medium is inserted into the main body, which cools water introduced through the cooling water inlet pipe, characterized in that: the main body is constituted of a heat exchanging part for performing a cooling operation by virtue of a heat exchanging pipe and an exhausting passage, wherein the heat exchanging part and the exhausting passage are integrally formed with each other such that they can create a U-shape channel and thereby a certain space is created therein, wherein the cooling water inlet is connected with a one side of an upper end of the main body, which is corresponding to a one end of the heat exchanging part, wherein the cooling water outlet is connected with the other side of the upper end of the main body, which is corresponding to a one end of the exhausting passage, wherein a connecting tube is integrally connected and installed to a front side of the upper end of the main body at a position adjacent to the cooling water inlet, wherein the heat exchanger pipe passes through the connecting tube and continuously it is inserted in the heat exchanging part of the main body, wherein a capillarity tube for injecting cooling medium and a cooling medium exhausting pipe are inserted into the heat exchanging pipe and then held by virtue of a packing.
A spiral partition for circulating water in the creation of the vortex or swirling motion, which is introduced into the heat exchanging part via the cooling water inlet, is installed between an inner side surface of the heat exchanging part in the main body and an outer side surface of the heat exchanging pipe. Furthermore, a spiral partition for circulating cooling medium in the creation of the vortex or swirling motion, which is introduced from the capillarity tube to the cooling medium exhausting pipe, is installed between an inner side surface of the heat exchanging pipe and an outer side surface of the capillarity tube.

BRIEF DESCRIPTION OF THE DRAWINGS

The above objects and other characteristics and advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings, in which:

FIG. 1 is a perspective view of a conventional heat exchanger for a cooling system;

FIG. 2 is a side sectional view for showing a state that the conventional heat exchanger is installed in a heat exchanger system;

FIG. 3 is a perspective view of a heat exchanger for a cooling system according to a preferred embodiment of the present invention;

FIG. 4 is a front sectional view of the heat exchanger for a cooling system as illustrated in FIG. 3;

FIG. 5 is a side sectional view of the heat exchanger for a cooling system as illustrated in FIG. 3;

FIGS. 6A and 6B are partially cutaway view in perspective of a structure for circulating water and cooling medium in the creation of the vortex or swirling motion;

FIGS. 7A and 7B are perspective views of other embodiment according to the present invention; and

FIG. 8 shows a state that the heat exchanger for a cooling system according to the present invention is installed.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, a heat exchanger for a cooling system according to the present invention will be explained in more detail with reference to the accompanying drawings FIGS. 1 to 5.
FIG. 3 is a perspective view of the heat exchanger according to a preferred embodiment of the present invention, FIGS. 4 and 5 are front and side sectional views of the heat exchanger as shown in FIG. 3, FIGS. 6A and 6B are partially cutaway view in perspective of a structure for circulating water and cooling medium in the creation of the vortex or swirling motion, FIGS. 7A and 7B are perspective views of other embodiment according to the present invention, and FIG. 8 shows the state that the heat exchanger for a cooling system according to the present invention is installed.
As shown in FIG. 3, the heat exchanger 10 according to the preferred embodiment of the present invention includes a rod-shaped main body 11 having a predetermined length. Due to the shape of main body 11, it is possible to reduce a volume to be occupied by the heat exchanger 10 at the maximum. A heat exchanging part 11 a for performing a cooling operation with the aid of a heat exchanging pipe 16 is formed in the main body 11 in the longitudinal direction and it bulges out. Likewise, an exhausting passage 11 b for exhausting cooled water is also formed in the main body 11 in the longitudinal direction and it bulges out. The heat exchanging part 11 a and the exhausting passage 11 b are integrally formed with each other such that they can create a U-shape channel and thereby a certain space is created therein.
A cooling water inlet 12 is connected with a one side of an upper end of the main body 11, which is corresponding to a one end of the heat exchanging part 11 a. A cooling water outlet 13 is connected with the other side of the upper end of the main body 11, which is corresponding to a one end of the exhausting passage 11 b. Hose connecting parts 12 a,13 a are formed around the cooling water inlet 12 and the cooling water outlet 13, respectively.
The cooling water outlet 13 is installed at a cantilever portion of the main body 11, which extends from the upper end of the main body 11 at a predetermined distance in a lateral direction, by means of a bracket 13 b such that it is fluid-communicated with the exhausting passage 11 b. Since the main body 11 has a rod shape, it is hard to obtain a sufficient space for installing the cooling water inlet 12 and the cooling water outlet 13 together at an upper side of the main body 11. In order to solve this problem, the exhausting passage 11 b further extends at a predetermined distance in a lateral direction. As a result, the cooling water outlet 13 is sufficiently spaced from the cooling water inlet 12 and thereby resulting in the convenient installation and connection of the cooling water outlet 13.
Accordingly, it is possible to dispose the cooling water outlet 13 at a position adjacent to the cooling water inlet 12 on the basis of the width of the main body 11. If a work for connecting a hose to the cooling water inlet 12 and the cooling water outlet 13 is not troublesome, there is no need to extend the upper end of the main body 11 in a lateral direction so as to form the cantilever portion as shown in FIG. 3.
Meanwhile, a connecting tube 14 and a sensor connecting tube 19 are integrally connected and installed to a front side of the upper end of the main body 11. The heat exchanging part 11 a has an approximate triangular shape and forwardly extends at a predetermined distance from the upper end of the main body 11 of which the cooling water inlet 12, the connecting tube 14 and the sensor connecting tube 19 are installed. Due to this structure, it is possible to incorporate the cooling water inlet 12, the connecting tube 14 and the sensor connecting tube 19 in a single body, and thereby resulting in the creation of sufficient space for allowing a sensor tip of a sensor for measuring a temperature of water, which is inserted through sensor connecting tube 19, to be contacted with cooling water. Alternatively, the sensor connecting tube 19 may be disposed and connected with the exhausting passage 11 b adjacent to the cooling water outlet 13.
A threaded portion 14 a is formed at an outer circumferential surface of a front end of the connecting tube 14. A water leakage prevention cap 15 is mounted onto the threaded portion 14 a. Under this state, the heat exchanger pipe 16 for circulating cooling medium passes through the water leakage prevention cap 15 and the connecting tube 14 in sequence and continuously it is inserted in the heat exchanging part 11 a of the main body 11. A capillarity tube 17 for injecting cooling medium and a cooling medium exhausting pipe 18 are inserted into the heat exchanging pipe 16 and then held by virtue of a packing. As a result, the capillarity tube 17 and the cooling medium exhausting pipe 18 may be incorporated in a single tube.
As shown in FIGS. 4 and 5, in the heat exchanger 10 according to the present invention, the heat exchanging part 11 a and the exhausting passage 11 b are separated from each other by means of a frame for the main body 11 and they are formed in an approximate
-shaped passage. The heat exchanging pipe 16 is inserted into the connecting tube 14 and the interior of the heat exchanger part 11 a in sequence such that it is formed in an approximate “<”-shape. At this time, the capillarity tube 17 for injecting cooling medium is also inserted into an interior of the heat exchanging pipe 16.
An inlet of the heat exchanging pipe 16 is sealed against an end of the cooling medium exhausting pipe 18 and the capillarity tube 17 by virtue of the packing. The distal end of the heat exchanging pipe 16 adjacent to the lower end of the main body 11 is blocked. Due to this structure, the cooling medium exhausted from the capillarity tube 17 for injecting cooling medium, which extends up to the distal end of the heat exchanger pipe 16, begins to rise along an inner space of the heat exchanger pipe 16. Then, it may be exhausted through the cooling medium exhausting pipe 18 that is connected to the inlet of the heat exchanger pipe 16 and thereby resulting in the creation of space for allowing the cooling medium to flow within the heat exchanger pipe 16.
Referring to FIGS. 4 and 5, partial portions at a region of the upper side in the main body 11, which are illustrated at an imaginary line, are corresponding to the cooling water inlet passage 21 and the cooling water outlet passage 22, respectively. It should be noted that, for the sake of clarity and understanding of the invention, the partial portions illustrated by the imaginary line did not substantially expressed in the drawings. The cooling water inlet passage 21 and the cooling water outlet passage 22 are fluid-communicated with the cooling water inlet (12) and the cooling water outlet (13), respectively. Meanwhile, the water leakage prevention cap 15 is mounted to the front end of the connecting tube 14 with the aid of an O-shaped ring 15 a is provided there between. This water leakage prevention structure can be also employed for mounting the hose connecting parts 12 a,13 a formed at the cooling water inlet 12 and the cooling water outlet 13.
As shown in FIGS. 4 and 5, partial portions between an inner side surface of the heat exchanging part 11 a and an outer surface of the heat exchanger pipe 16, which are illustrated at a slant line, are corresponding to the spiral partition 20 for circulating and guiding the water downwards in the creation of the vortex or swirling motion. Since the FIGS. 4 and 5 show the main body 11 of the heat exchanger 10 in a sectional view, then the spiral partition 20 may be expressed such a slant line. Due to this structure, the water introduced into the heat exchanging part 11 a via the cooling water inlet 12 and the cooling water inlet passage 21 in sequence can be circulated and flow downwards in the creation of the vortex or swirling motion.
As best seen in FIG. 6A, the spiral partition 20 is installed along an outer circumferential surface of the heat exchanger pipe 16 as a shape of screw. The spiral partition 20 can be integrally formed with the main body 11 or the heat exchanger pipe 16 by using an injection molding process. In order to form the spiral partition 20 with easy, it is preferable to use the former case. Due to formation of the spiral partition 20, the water descending along the heat exchanger pipe 16 may flow in the vortex or swirling motion and thereby resulting in the improvement of the cooling performance of water by virtue of cooling medium.
As shown in FIG. 6B, it is possible to install a spiral partition 23 for circulating the cooling medium, which is exhausted from the capillarity tube 17 to the cooling medium exhausting pipe 18, in the creation of the vortex or swirling motion between the inner side surface of the heat exchanger pipe 16 and the outer surface of the capillarity tube 17. The spiral partition 23 can be integrally formed with the heat exchanger pipe 16 or the capillary tube 17 for injecting cooling medium. It is preferable to make descending and rotating directions of water via the spiral partitions 20,23 to be opposite to the ascending and rotating directions of cooling medium, with respect to cooling performance.
In the above embodiment according to the present invention as described above, the main body 11 has a rod shape. However, as shown in FIGS. 7A and 7B, it is possible to change an outer appearance of the main body 11 into an approximate “
”-shape or an approximate “
”-shape, with maintaining the outer structure and the inner structure of the main body 11 as it is. Due to the change of main body 11's shape, the heat exchanging part 11 a and the heat exchanger pipe 16 inserted there into can be further extended. Of course, it is possible to obtain a space required for performing a heat exchange in the main body 11.
Hereinafter, an operation of the heat exchanger for a cooling system according to the present invention will be explained in more detail with reference to the accompanying drawings.
As shown in FIG. 8, the heat exchanger 10 according to the present invention 10 may be disposed into a casing 210 of a heat exchanging system 200. At this time, a radiator 230 having a compressor 220 and a radiating fan 240 is also disposed into the casing 210. The capillarity tube 17 for injecting cooling medium is connected with the radiator 230 and the cooling medium exhausting pipe 18 is connected with the compressor 220, respectively. A first hose for introducing cooling water is connected with the cooling water inlet 12 and a second hose for exhausting cooling water is connected with the cooling water outlet 13.
When the heat exchanger 10 according to the present invention is installed in the casing 210 of the heat exchanging system 200, a volume required for installing of the heat exchanger 10 highly decreases due to the shape of the heat exchanger 10. Accordingly, the heat exchanger 10 can be easily installed in a surplus space of the casing 210, which is created between the compressor 220 and the radiator 230 in the casing 210. More particularly, the heat exchanger 10 can be easily installed at a relatively narrow region such as an inner corner of the casing 210. If an outer appearance dimension of the casing 210 is reduced at the maximum, it is possible to provide a compact heat exchanging system 200 that is necessary for a cooling equipment of small scale.
If a cooling cycle begins to be performed due to operation of the compressor 220 in a state that the heat exchanger 10 according to the present invention is installed together with the compressor 220 and the radiator 230, cooling medium is introduced into the capillarity tube 17 for injecting cooling medium via the radiator 230 from the compressor 220. Then, the cooling medium is exhausted through the distal end of the heat exchanger pipe 16 and it ascends along the heat exchanger pipe 16. Then, the water introduced into the cooling water inlet 12 descends along the inner side of the heat exchanging part 11 a in the main body 11. Consequently, the water may be cooled by virtue of the heat exchanger pipe 16 in the heat exchanging part 11 a.
The cooling medium used for cooling during the ascending along the heat exchanger pipe 16 is exhausted through the cooling medium exhausting pipe 18 that is connected with the inlet side of the heat exchanger pipe 16. The cooled water is exhausted through the cooling water outlet 13 along the exhausting passage 11 b. In the heat exchanger 10 according to the present invention, the heat exchanging part 11 a and the exhausting passage 11 b form a “U”-shape channel by virtue of the heat exchanger pipe 16. The water ascending along the outer side surface of the heat exchanger pipe 16 is in heat exchange relationship with the cooling medium ascending along the interior of the heat exchanger pipe 16. Accordingly, the water is rapidly and concretely cooled at the inner side of the heat exchanging part 11 a.
Although the heat exchanger pipe 16 is inserted into the main body 11 in a linear type so as to reduce the total length thereof, the cooling performance does not deteriorate. Accordingly, it is possible to prevent certain materials for manufacturing the heat exchanger pipe 16 from being wasted. The heat exchanger for a cooling system according to the present invention is superior to the conventional heat exchanger with respect to the manufacture of the heat exchanger pipe 16. In other words, the heat exchanger pipe having a relatively great length according to the prior art was installed in the main body of the heat exchanger by winding up at several ten time in a spiral manner. By comparison with the conventional heat exchanger pipe, according to the present invention, the linear type of heat exchanger pipe 16 may be rounded at 90° together with the capillarity tube 17. This bending work may be performed once or two or three times. Consequently, it is easy to manufacture the heat exchanger pipe 16 and is possible to give a considerable reduction in costs.
More particularly, since the spiral partitions 20,23 for guiding the water to descend and for guiding the cooling medium to ascend in the creation of the vortex or swirling motion are installed between the heat exchanging part 11 a, the heat exchanger pipe 16 and the capillarity tube 17 in the main body 11, the heat exchange relationship between the water and the cooling medium is further smoothly performed due to the mixed flow of water and cooling medium in the creation of the vortex or swirling motion. As a result, it is possible to highly improve the cooling performance of the cooling water by virtue of the heat exchanger pipe 16.
As described above, in order to use the heat exchanging system 200 with safe in the heat exchanger 10 in which cooling water is stored in the main body 11, it is required to solve the problem that water is leaked through a connecting portion between pipes. In the heat exchanger 10 according to the present invention, the capillarity tube 17 for injecting cooling medium and the cooling medium exhausting pipe 18 are inserted into the heat exchanger pipe 16. Accordingly, the total length of the connecting portion between the cooling medium pipes can be reduced by one-half in comparison with the conventional case. In conclusion, it can be seen that the heat exchanger for a cooling system according to the present invention is significantly superior to the heat exchanger according to the prior art in terms of the pipe structure and water leakage prevention performance. That is, in the heat exchanger according to the present invention, it is possible to simplify the piping structure of the heat exchanger 10 and to reduce the possibility of water leakage about 50%.
As described above, the heat exchanger for a cooling system according to the present invention is capable of providing a compact heat exchanging system having a compressor and a radiator by minimizing an occupied volume of the heat exchanger, which is capable of simplifying a piping structure by integrating a cooling medium injection pipe and a cooling medium exhaust pipe into a single piping structure, and which is capable of preventing water leakage through a pipe connecting portion. In which a heat exchanging part and a passage for exhausting cooling water are disposed along the rod-shaped main body of the heat exchanger thereby resulting in the formation of a “U”-shaped channel. In which the capillarity tube for injecting cooling medium is disposed in the heat exchanger pipe at a hollow, double-barreled tube type. In which an end of the pipe for exhausting cooling medium is inserted into the inlet of the heat exchanger pipe together with the capillarity tube.
Furthermore, the heat exchanger for a cooling system according to the present invention is capable of improving a cooling performance of the cooling system having the heat exchanger and capable of highly enhancing a thermal efficiency per an electric heat area in the heat exchanger by disposing a spiral partition between a heat exchanging part, a heat exchanger pipe and a capillarity tube in a main body of the heat exchanger so as to guide a mixed flow of water and cooling medium in the creation of the vortex or swirling motion.
While the invention has been described with reference to the above specific embodiment, it is apparent that numerous modifications and variations can be made without departing from the scope and spirit of this invention. It is therefore intended that this Invention be limited only as indicated by the appended claims.

Claims

1. A heat exchanger for a cooling system comprising a main body to which a cooling water inlet and a cooling water outlet are connected, in which a heat exchanging pipe for circulating a cooling medium is inserted into the main body, which cools water introduced through the cooling water inlet pipe, wherein:

the main body is constituted of a heat exchanging part for performing a cooling operation by virtue of a heat exchanging pipe and an exhausting passage, wherein the heat exchanging part and the exhausting passage are integrally formed with each other such that they can create a U-shape channel and thereby a certain space is created therein, wherein the cooling water inlet is connected with a one side of an upper end of the main body, which is corresponding to a one end of the heat exchanging part, wherein the cooling water outlet is connected with the other side of the upper end of the main body, which is corresponding to a one end of the exhausting passage, wherein a connecting tube is integrally connected and installed to a front side of the upper end of the main body at a position adjacent to the cooling water inlet, wherein the heat exchanger pipe passes through the connecting tube and continuously it is inserted in the heat exchanging part of the main body, and wherein a capillarity tube for injecting cooling medium and a cooling medium exhausting pipe are inserted into the heat exchanging pipe and then held by virtue of a packing.

2. The heat exchanger for a cooling system as claimed in claim 1, wherein a spiral partition for circulating water in the creation of the vortex or swirling motion, which is introduced into the heat exchanging part via the cooling water inlet, is installed between an inner side surface of the heat exchanging part in the main body and an outer side surface of the heat exchanging pipe.

3. The heat exchanger for a cooling system as claimed in claims 1 or 2, wherein a spiral partition for circulating cooling medium in the creation of the vortex or swirling motion, which is introduced from the capillarity tube to the cooling medium exhausting pipe, is installed between an inner side surface of the heat exchanging pipe and an outer side surface of the capillarity tube.