KR101971483B1 - Heater - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger, and more particularly, to a heat exchanger capable of reinforcing deformation of a header of a heat exchanger by joining a reinforcing member to a certain region of a header inside a header tank.

Description

Heat exchanger {Heater}

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger capable of reinforcing deformation of a header of a heat exchanger by joining a reinforcing member to a certain region of a header inside a header tank.

A radiator of a vehicle radiates part of the heat generated in the internal combustion engine through the cooling water into the atmosphere. In the internal combustion engine, a very large amount of heat is generated in the course of ignition and combustion of high-temperature and high-pressure gas.

Therefore, unless the internal combustion engine is cooled, various components including the cylinder and the piston are melted or torn due to overheating, thereby causing damage and breakage.

The radiator is provided with a jacket for receiving cooling water around the cylinder of the internal combustion engine and circulating the cooling water into the jacket so that the cooling water absorbs heat generated from the engine to cool the engine.

However, since the cooling water also absorbs heat from the engine for a long time and can no longer absorb heat from the engine at a high temperature, a device for cooling the cooling water is required. The radiator circulates the high- It is a device.

In addition, the air conditioner for adjusting the air inside the car to a comfortable temperature is installed in the currently released vehicle. In such an air conditioner, a high-temperature, high-pressure gaseous refrigerant is compressed into a liquid refrigerant by radiating heat to the condenser, and then the low-pressure refrigerant is supplied through the evaporator to the inside of the automobile. In this way, predetermined heat dissipation must also be performed in the condenser.

In addition, an oil cooler for cooling the engine oil and the transmission oil is installed inside the vehicle, and an intercooler is installed depending on the type of the engine.

As described above, since each of the devices requires sufficient heat radiation, they are installed in front of the engine room so as to cool them, so that they can be radiated smoothly.

The heat exchanger is composed of a pair of headers having a plurality of tubes through which the heat exchange medium flows and spaced apart from each other by a predetermined distance so as to fix both ends of the tubes and a pair of tanks respectively coupled to the pair of headers, Respectively.

Further, when a tube is coupled to a pair of conventional headers, a tube insertion hole is formed to connect the tube to the header, and the tube insertion hole is protruded at a predetermined interval in an inward direction in which the header and the tank are coupled.

Here, the tube is coupled to the protruded tube insertion hole, and the tube is protruded and coupled to the inside of the header tank to heat the heat exchange medium, heat is exchanged by the fin interposed between the tubes. The heat exchanger may be used for various purposes depending on a heat exchange medium flowing therein.

However, the tube is expanded / contracted due to the repeated temperature change of the heat exchanger, which may cause deformation due to the thermal stress.

Such deformation due to thermal stress often occurs at a junction portion between the header and the tube. When such deformation is severe, there arises a problem that gold is formed in the tube itself or distortion or twisting of the header occurs , The internal heat exchange medium may leak.

When the thickness of the tube material is increased in order to solve the above problems, the production cost and weight of the heat exchanger are increased and the productivity is lowered.

As another method for solving the above problem, a conventional heat exchanger (Japanese Patent Laid-Open No. 2007-163124) shown in Fig. 1 has a structure in which both ends of a tube are inserted into a header 30, And the reinforcing member 5 is inserted.

In this case, the reinforcing member 5 is an individual item corresponding to each of the tubes. Since the reinforcing member 5 must be provided in the tube insertion holes 20 at both ends of the tube, it takes a long time to assemble the tube, .

Patent Document 1: Japanese Patent Application Laid-Open No. 2007-163124 (published on June 28, 2007)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a method for manufacturing a heat exchanger, which can prevent cracks in a tube insertion hole and a tube- And a heat exchanger capable of preventing deformation or twisting of the header due to a low temperature difference.

Particularly, it is an object of the present invention to improve the durability of a header by using a simple method of joining a reinforcing member to a region where a temperature difference is generated without increasing a thickness of a header or a tube, and after the reinforcing member and the header are assembled, And to provide a heat exchanger capable of increasing productivity by brazing.

It is also an object of the present invention to provide a heat exchanger which is freely adjustable in the size of the formation of the reinforcing member, so that it can be freely applied to a portion where reinforcement of the header is required.

The heat exchanger 1000 of the present invention includes a first header tank 100 formed by coupling a first header 110 having a plurality of first tube insertion holes 130 formed therein and a first tank 120; The second header 220 is formed by joining the second header 210 and the second header 220 which are spaced apart from the first header tank 100 by a predetermined distance and formed with a plurality of second tube insertion holes 230 A second header tank 200; A plurality of tubes 300 having both ends fixed to the first tube insertion hole 130 of the first header 110 and the second tube insertion hole 230 of the second header 210 and forming a heat exchange medium flow path, ; And a plurality of fins (400) interposed between the tubes (300), wherein a first tube (210) in the first header tank (100) And a first reinforcing member 500 having a first hollow hole 510 corresponding to the first hollow member 130 are joined.

The heat exchanger 1000 includes a second hollow hole 610 corresponding to the second tube insertion hole 230 in a predetermined region of the second header 210 inside the second header tank 200 And the second reinforcing member 600 is formed.

The first reinforcing member 500 and the second reinforcing member 600 are bonded to a region of the heat exchanger 1000 where a temperature difference of the heat exchange medium is generated in a direction of stacking the tubes 300 .

The heat exchanger 1000 is formed with a concave first rib 140 in the first header 110 and the first reinforcing member 500 corresponds to the concave first rib 140, The second reinforcing member 600 is formed in the second header 210 in a concave shape corresponding to the concave second rib 240 and the first reinforcing member 500, Wherein the first header (110), the tube (300), the pin (400), the second reinforcing member (600), and the second header (210) are assembled and brazed.

A plurality of the first hollow holes 510 are formed in the first reinforcing member 500 and a plurality of the second hollow holes 610 are formed in the second reinforcing member 600.

Accordingly, the heat exchanger of the present invention can prevent the cracks of the tube insertion hole and the tube joint portion by deforming or twisting the header due to the temperature difference between the high temperature and the low temperature of the heat exchange medium by joining the reinforcing member to a certain region of the header inside the header tank There is an advantage that it can be prevented.

Particularly, in the heat exchanger of the present invention, the durability of the header can be increased by using a simple method of joining the reinforcing member to the region where the temperature difference is generated without increasing the thickness of the material of the header or the tube. After the reinforcing member and the header are assembled together, There is an advantage that productivity can be improved by brazing joint.

Further, the heat exchanger of the present invention is advantageous in that the size of the reinforcing member can be freely adjusted, so that it can be freely applied to a portion where a header is required to be reinforced.

1 is a perspective view showing a conventional heat exchanger;
2 is a perspective view of a heat exchange medium according to the present invention;
3 is an exploded perspective view of a heat exchanger according to the present invention.
4 is an exploded perspective view of a heat exchanger showing the engagement of a second reinforcing member and a second header according to the present invention.
5 is a partial cross-sectional view showing a reinforcing member, a header, and a tube according to the present invention.
6 is a plan view showing the reinforcing member shown in Figs. 3 and 4. Fig.
7 is a plan view showing another reinforcing member according to the heat exchanger of the present invention.

Hereinafter, the heat exchanger 1000 of the present invention having the above-described characteristics will be described in detail with reference to the accompanying drawings.

The heat exchanger 1000 of the present invention includes a first header tank 100, a second header tank 200, a tube 300, a fin 400, and a first reinforcing member 500.

The first header tank 100 and the second header tank 200 are spaced apart from each other by a predetermined distance. The first header tank 100 includes a first header 110, a first header 120, ).

The first header 100 forming the first header tank 100 is formed with a plurality of first tube insertion holes 130 through which one end of the tube 300 is inserted.

The second header tank 200 is formed by coupling the second header 210 and the second tank 220 and the other end of the tube 300 is inserted into the second header 210 A plurality of second tube insertion holes 230 to be coupled therethrough are formed.

Both ends of the tubes 300 are fixed to the first header tank 100 and the second header tank 200, which are spaced apart from each other by a predetermined distance. The tubes 300 are stacked in a height direction and installed in the heat exchanger.

Both ends of the tube 300 are fixed to the first tube insertion hole 130 of the first header 110 and the second tube insertion hole 230 of the second header 210 to form a heat exchange medium flow path .

The fin 400 is interposed between the tubes 300 and is formed with a plurality of external air flows through a region where the fins 400 are formed to exchange the heat exchange medium inside the tubes 300 .

The heat exchanger 1000 includes an inlet pipe 710 through which the heat exchange medium flows into one of the first header tank 100 and the second header tank 200 and a discharge pipe 720 through which the heat exchange medium is discharged .

The installation position of the inlet pipe 710 and the discharge pipe 720 provided in the first header tank 100 or the second header tank 200 of the heat exchanger 1000 is determined by the installation position of the heat exchanger 1000 Depending on the position and the position of the connection with the hose in the vehicle body.

FIG. 2 is a perspective view of a heat exchanger 1000 according to the present invention. In the heat exchanger 1000, the inlet pipe 710 is formed on the upper side of the second header tank 200, Temperature heat exchange medium flowing through the inlet pipe 710 is heat-exchanged with the outside air while flowing through the tube 300, and the outlet pipe 710 is connected to the outlet pipe 710, (720).

At this time, the high-temperature heat exchange medium is heat-exchanged to radiate heat to the outside, and the temperature is changed to become the low-temperature heat exchange medium.

2, in the heat exchanger 1000, a high temperature region A1 in which the high temperature heat exchange medium flows and a low temperature region A2 in which the low temperature heat exchange medium flows are generated in the lower end portion . At this time, stagnation points (P1, P2) where the temperature difference between the high-temperature heat exchange medium and the low-temperature heat exchange medium are generated are formed.

That is, the stagnation points P1 and P2 are boundary regions where the high-temperature region A1 and the low-temperature region A2 meet, and the high-temperature heat exchange medium is relatively different from the low-temperature heat exchange medium, In the case of the inlet pipe 710 and the outlet pipe 720 as shown in FIG. 2, the stagnation point is inclined downward from the first header tank 100 toward the second header tank 200 side .

A thermal shock is generated due to a temperature difference in a portion where the stagnation points P1 and P2 where the high temperature region A1 and the low temperature region A2 meet of the first header 110 and the second header 120 are formed, A fine gap may be formed or the first header 110 and the second header 120 may be deformed.

3 to 5 are an exploded perspective view of the heat exchanger 1000, an exploded perspective view, and a cross-sectional view of the second header tank 200 according to the present invention. The heat exchanger 1000 of the present invention shown in FIGS. 3 to 5 corresponds to the first tube insertion hole 130 in a predetermined region of the first header 110 in the first header tank 100 The first reinforcing member 500 having the first hollow hole 510 formed therein is bonded.

The first reinforcing member 500 is bonded to a predetermined region including the stagnation point P1, which is a region where the high temperature and low-temperature heat exchange medium shown in FIG. 2 abut against each other and a severe temperature difference is generated.

That is, the first reinforcing member 500 is bonded to the stagnation point P1 where the temperature difference of the first header 110 is generated as described above to reinforce the durability of the first header 110.

More specifically, the first reinforcing member 500 is bonded to the inner surface of the first header 110.

The first reinforcing member 500 forms a hollow hole 510 corresponding to the first tube insertion hole 130 and the first header 110 is formed with the first tube insertion hole 130 The inner circumferential surface of the first hollow hole 510 of the first reinforcing member 500 is joined to the first tube insertion hole 130, (500) and the tube (300) are not in contact with each other. (See Fig. 5)

In the heat exchanger 1000 of the present invention, the second reinforcing member 600 may be joined to the second header 210 inside the second header tank 200 (see FIG. 4)

The second reinforcing member 600 has a second hollow hole 610 formed in the second header tank 200 and corresponding to the second tube insertion hole 230 of the second header 210.

In this case, since the area where the second tube insertion hole 230 is formed in the second header 210 protrudes to the inside of the second header tank 200, The inner circumferential surface of the second hollow hole 610 of the reinforcing member 600 is joined to the second tube insertion hole 230 and the second reinforcing member and the tube 300 are not in contact with each other. (See Fig. 5)

4 shows a state in which the second reinforcing member 600 is bonded to the second header 210. In FIG.

The heat exchanger 1000 of the present invention forms concave first ribs 140 and second ribs 240 in the first header 100 and the second header 200.

The first ribs 140 and the second ribs 240 are recessed portions of the first header 100 and the second header 200 to reinforce the strength of the first ribs 140 and the second ribs 240, The second header 500 and the second reinforcing member 600 are formed to correspond to the second header 200 having the first and second ribs 240 and 240 formed with the first ribs 140.

The second reinforcing member 600 is formed on the second rib 240 of the second header 210 so that the first reinforcing member 500 may be attached to the second rib 240 of the second header 210. In other words, the first reinforcing member 500 corresponds to the concave first rib 140, It is a corresponding form.

The first and second reinforcing members 500 and 600 may be maintained in a state of being assembled to the first header 110 and the second header 210 respectively and the heat exchanger The first reinforcing member 500, the first header 110, the tube 300, the pin 400, the second reinforcing member 600, and the second header 210 are assembled together, The first header 120 may be assembled to the first header 110 and the second tank 220 may be assembled to the second header 210.

6 is a plan view showing the first reinforcing member 500 and the second reinforcing member 600 shown in FIGS. 3 and 4, and FIG. 7 is a plan view showing the first reinforcing member 500 and the second reinforcing member 600 according to the heat exchanger 1000 of the present invention, (500) and a second reinforcing member (600).

In the heat exchanger 1000 according to the present invention, the first reinforcing member 500 and the second reinforcing member 600 may be formed in various sizes.

The first reinforcing member 500 and the second reinforcing member 600 shown in Fig. 6 show an example in which two first hollow holes 510 and second hollow holes 610 are formed, and Fig. 7 The first reinforcing member 500 and the second reinforcing member 600 have an example in which three first hollow holes 510 and second hollow holes 610 are formed.

Accordingly, the heat exchanger 1000 of the present invention can be manufactured by joining the reinforcing members 500 and 600 to a certain region of the header 110 and 120 inside the header tanks 100 and 200, There is an advantage that cracking of the junction portion of the tube 300 and deformation or twisting of the header due to temperature difference between high temperature and low temperature of the heat exchange medium can be prevented.

Particularly, the heat exchanger 1000 of the present invention uses a simple method of joining the reinforcing members 500 and 600 to the regions where the temperature difference is generated without increasing the material thickness of the headers 110 and 120 or the tubes 300 The durability of the headers 110 and 120 can be enhanced and the productivity can be improved by brazing after the reinforcing members 500 and 600 and the headers 110 and 120 are assembled together.

In addition, the heat exchanger 1000 of the present invention is advantageous in that the size of the reinforcing members 500 and 600 can be freely adjusted, so that the header 110 and 120 can be freely applied to a portion where reinforcement is required.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1000: heat exchanger
100: first header tank
110: first header 120: first tank
130: first tube insertion hole 140: first rib
200: second header tank
210: second header 220: second tank
230: second tube insertion hole 240: second rib
300: tube
400: pin
500: first reinforcing member 510: first hollow hole
600: second reinforcing member 610: second hollow hole
710: inlet pipe 720: exhaust pipe

Claims (5)

A first header tank 100 formed by combining a first header 110 having a plurality of first tube insertion holes 130 formed therein and a first tank 120; The second header 220 is formed by joining the second header 210 and the second header 220 which are spaced apart from the first header tank 100 by a predetermined distance and formed with a plurality of second tube insertion holes 230 A second header tank 200; A plurality of tubes 300 having both ends fixed to the first tube insertion hole 130 of the first header 110 and the second tube insertion hole 230 of the second header 210 and forming a heat exchange medium flow path, ; And a plurality of fins (400) interposed between the tubes (300), the heat exchanger (1000)
The heat exchanger (1000)
A first reinforcing member 500 (500) having a first hollow hole (510) corresponding to the first tube insertion hole (130) is formed in a predetermined area of the inner surface of the first header (110) inside the first header tank Is bonded,
A second reinforcing member 600 having a second hollow hole 610 corresponding to the second tube insertion hole 230 in a predetermined area of the inner surface of the second header 210 inside the second header tank 200, Respectively,
A concave first rib 140 is formed in the first header 110 and the first reinforcing member 500 corresponds to the concave first rib 140,
A concave second rib 240 is formed in the second header 210 and the second reinforcing member 600 corresponds to the concave second rib 240,
The first reinforcing member 500 and the second reinforcing member 600 are formed such that the inner circumferential surfaces of the first hollow hole 510 and the second hollow hole 610 are inserted into the first tube insertion hole 130, (230) so that they are not in contact with the tube (300).
delete The method according to claim 1,
Wherein the first reinforcing member (500) and the second reinforcing member (600) are joined to a region of the heat exchanger (1000) where a temperature difference of the heat exchange medium is generated in a direction of stacking the tubes (300) .
The method according to claim 1,
The heat exchanger (1000)
The first reinforcing member 500, the first header 110, the tube 300, the pin 400, the second reinforcing member 600, and the second header 210 are joined together and brazed Features a heat exchanger.
The method according to claim 1,
Wherein a plurality of the first hollow holes (510) are formed in the first reinforcing member (500), and a plurality of the second hollow holes (610) are formed in the second reinforcing member (600).

Images