KR101455657B1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, comprising: a plurality of tubes arranged in parallel in the air flow direction to form a heat exchange medium flow path; A plurality of radiating fins interposed between the tubes; A first header member and a second header member having a plurality of tube insertion holes formed at both ends of the tube so as to penetrate both ends of the tube, A first header pipe which is seated on one side of the first header member and the second header member and has a plurality of tube fixing holes formed therein so that both ends of the tube penetrating the first and second header members are inserted and fixed; Two header pipes; An inlet pipe connected to the first header pipe or the second header pipe to receive the heat exchange medium, and an outlet pipe through which the introduced heat exchange medium is discharged,

And the first header member and the second header member are each provided with a leak check hole at least one of the one tube insertion hole and the other tube insertion hole and the outer side of the outermost tube insertion hole.

Heat Exchanger, Brazing, Leakage

Description

Heat Exchanger {HEAT EXCHANGER}

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger including a header pipe and a header member surrounding the header pipe, wherein the header pipe and the header member are firmly coupled to each other, ) Of the heat exchanger.

Typically, the heat exchanger has a flow path through which a heat exchange medium such as cooling water or a coolant can flow, so that heat exchange with the outside air or other heat exchange medium is performed while the heat exchange medium flows along the flow path.

For example, the refrigerant compressed by the compressor and raised in temperature is moved to the condenser, and the refrigerant whose temperature is lowered by the heat exchange through the condenser is further lowered while passing through the expansion valve, and is moved to the evaporator.

The refrigerant in the low temperature state transferred to the evaporator is heat-exchanged with the outside air. When the generated cold air is supplied to the room, the refrigerant operates as a cooling unit.

On the other hand, the cooling water heated through the heat exchange with the engine is moved to the heater core and the radiator due to the operation of the water pump connected to the crankshaft of the engine, and performs heat exchange with the outside air.

At this time, when warm air heated by heat exchange with the heater core is supplied to the room, it operates as a heating device.

1 and 2 illustrate a conventional heat exchanger. As shown in the drawing, a first header pipe 110 and a second header pipe 110 are formed at predetermined intervals with a flow path 111 formed therein to allow a heat exchange medium to flow therethrough, (120); A first header member 15 and a second header member 25 arranged to surround a part of the opposite side of the first header pipe 110 and the second header pipe 120; A heat exchange medium circulation path 131 is formed therein and one end portion is inserted through the first header member 115 into the first header pipe 110 seated in the first header member 115, A plurality of tubes 130 inserted into the second header pipe 120 through the second header member 125 and seated in the second header member 125, And a radiating fin 135.

A tube insertion hole 117 is formed in the first header member 115 and the second header member 125 through which both ends of the tube 130 are inserted so as to insert the tube 130, The tube fixing holes 113 are formed in the two header pipes 110 and 120 so that both ends of the tubes 130 passing through the tube insertion holes 117 of the first and second header members 115 and 125 are inserted and fixed. .

The tube 130 is inserted into the tube fixing hole 113 of the first and second header pipes 110 and 120 through the tube insertion hole 117 of the first and second header members 115 and 125 The first and second header members 115 and 125 are in contact with one surface of the first and second header pipes 110 and 120 and then bonded to the first and second header pipes 110 and 120, The first and second header members 115 and 125 and the tube 130 are brazed to each other.

Brazing refers to a method in which a filler melted at a temperature of 450 ° C or higher is placed at a joint portion of a base material to be bonded and heated to 450 ° C or higher to allow the melted filler to penetrate the joint portion of the base material to join the joint portion , It is possible to join dissimilar metals with different properties and has a strong bonding strength and excellent airtightness and corrosion resistance. Therefore, heat exchanger is mainly used for manufacturing a product which is made of thin metal such as heat exchanger and is difficult to weld.

2 and 3, when the first and second header pipes 110 and 120 and the first and second header pipes 110 and 120 are connected to each other, As the first and second header members 115 and 125 are in surface contact with each other, the brazing joint area is narrowed, making it difficult to firmly bond the first and second header pipes 115 and 120. The first and second header pipes 110 and 120, When the foreign substance 190 including the air or the gas generated in the brazing process and the melt is interposed between the electrodes 130 and 125, it is difficult to remove the foreign substances 190, thereby causing a problem of lowering the bonding efficiency.

In addition, when a failure occurs in the junction between the first and second header pipes 110 and 120 and the first and second header members 115 and 125 and the tube 130, it is difficult to detect a defect and a defect is found There is a problem that it is impossible to find the exact position even though

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems, and an object of the present invention is to provide a heat exchanger, And the first and second header pipes are joined to the first and second header pipes, respectively, so that air and foreign matter are not interposed between the first and second header pipes, Lt; / RTI >

In addition, it is an object of the present invention to provide a heat exchanger which can easily determine whether or not leakage of a heat exchange medium occurs.

The present invention also provides a heat exchanger in which the production cost is reduced by reducing the material.

In order to achieve the above object, the present invention provides a heat exchanger comprising: a plurality of tubes arranged in parallel in parallel in an air flow direction to form a heat exchange medium flow path; A plurality of radiating fins interposed between the tubes; A first header member and a second header member having a plurality of tube insertion holes formed at both ends of the tube so as to penetrate both ends of the tube, A first header pipe which is seated on one side of the first header member and the second header member and has a plurality of tube fixing holes formed therein so that both ends of the tube penetrating the first and second header members are inserted and fixed; Two header pipes; An inlet pipe connected to the first header pipe or the second header pipe to receive the heat exchange medium, and an outlet pipe through which the introduced heat exchange medium is discharged,

And the first header member and the second header member are each provided with a leak check hole at least one of the one tube insertion hole and the other tube insertion hole and the outer side of the outermost tube insertion hole.

Here, the leakage check hole is integrally formed in the tube insertion hole.

In this case, the leakage check hole is formed in communication with the tube insertion hole.

The leakage check ball may be one or more.

The leak check hole is formed between an extension line connecting one longitudinal end portion of the plurality of tube insertion holes and an extension line connecting the other end portion.

As described above, according to the present invention, since the leakage confirmation hole is formed in the header member, the joining area between the header member and the header pipe is increased and the joining is made more firmly. It is easy to discharge the air, gas, and foreign substances, which are present in the gas-liquid separator.

In addition, there is an operation effect that it is easy to judge whether the heat exchanger leaks through the leakage check hole.

Further, since the leakage confirmation hole is formed in the header member, the material of the header member is reduced, thereby reducing the manufacturing cost of the heat exchanger.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which preferred embodiments of the invention are shown.

Hereinafter, a heat exchanger according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 is a perspective view of a heat exchanger of the present invention, FIG. 5 is an exploded perspective view of a heat exchanger of the present invention, FIG. 6 is a sectional view of a heat exchanger of the present invention, and FIG. 7 is a plan view of various types of header members.

4 and 5 illustrate a heat exchanger according to the present invention. As shown in the drawings, the heat exchanger of the present invention includes first and second header pipes 10, 20 in which a flow path 11 is formed, First and second header members 15 and 25 disposed on opposite sides of the first and second header pipes 10 and 20, The heat exchange medium is introduced into the first and second header pipes (10, 20) through a tube (30) in which both ends are inserted into the pipes (10, 20), a radiating fin (35) interposed between the tubes , And an outlet pipe (50) for discharging the heat exchange medium from the first and second header pipes (10, 20).

The inlet pipe 40 is connected to a first header pipe 10 or a second header pipe 20 having a flow path 11 therein and is connected to the inside of the first header pipe 10 or the second header pipe 20 So that the heat exchange medium flowing into the first header pipe 10 or the second header pipe 20 through the inlet pipe 40 is discharged to the outside To the first header pipe (10) or the second header pipe (20).

The first header pipe 10 and the second header pipe 20 connected to the inlet outlet pipes 40 and 50 are connected to the inlet and outlet pipes 40 and 50 through the inlet and outlet pipes 40 and 50, At least one flow path 11 is formed in the inside so as to allow the heat exchange medium discharged from the inside to flow,

The first header member 15 and the second header member 25 disposed to surround the outer surfaces of the first header pipe 10 and the second header pipe 20 are connected to the first header pipe 10, The first header pipe 10 and the second header pipe 20 are disposed so as to surround the outer surface of the second header pipe 20 so that the pressure resistance and durability of the first header pipe 10 and the second header pipe 20 are improved, 10 and the first and second header pipes 10 and 20 and the first header pipe 10 and the second header pipe 20, (10) and the second header pipe (10, 20) so that the first header pipe (10) and the second header pipe (10, 20) (20).

The tube 30 allows the heat exchange medium to flow from the first header pipe 10 to the second header pipe 20 or from the second header pipe 20 to the first header pipe 10, A medium flow path 31 is formed and both ends of the first header pipe 10 and the second header pipe 20 are inserted and fixed.

The tube 30 is installed between the first header pipe 10 and the second header pipe 20 so that the first header pipe 10 is connected to the second header pipe 20 or the second header pipe 20 20 to the first header pipe 10, and the heat exchange medium is heat-exchanged with the outside air or other heat exchange medium through the flow of the heat exchange medium.

A plurality of the tubes 30 are arranged in parallel to the air circulation direction or the heat exchange medium circulation direction so as not to disturb the circulation of the outside air or other heat exchange medium flowing through the outside of the tube 30, The radiating fins 35 are formed to improve heat exchange efficiency.

The first header member 15 and the second header member 25 disposed at one side of the first header pipe 10 and the second header pipe 20 are provided with tube insertion holes The first header member 15 and the second header member 25 are inserted into the first header pipe 10 and the second header pipe 20 through the tube insertion holes 17 of the second header member 25, The tube fixing hole 13 is formed to be inserted and fixed.

The first header member 15 and the second header member 25 are provided with at least one tube insertion hole 17 and a tube insertion hole 17 and an outermost tube insertion hole 17 A leak check hole (19) is formed in one of the holes.

6, the leakage check hole 19 is formed between the first and second header pipes 10 and 20 and the first and second header members 15 and 25, So that air and foreign substances interposed between the first and second header pipes (10, 20) and the first and second header members (15, 25) are naturally discharged to the outside, So that a firm connection is established between the first and second header pipes 10 and 20 and the first and second header members 15 and 25.

6, the heat exchange medium leaking from the junction of the tube 30 and the first and second header pipes 10 and 20 is discharged to the outside to confirm whether or not the leakage has occurred, So that it can measure the exact position of the sensor.

7, the leakage check hole 19 is formed to have a predetermined shape in consideration of easiness of fabrication, and has an extension line connecting an extension line connecting one end in the longitudinal direction of the plurality of tube insertion holes 17 and an extension line connecting the other end .

The position, shape, and size of the tube insertion hole 17 are not limited to those shown in FIG. 6, and any changes may be made without departing from the gist of the present invention.

7A to 7C are views showing various types of leakage confirmation holes 19. Like the shape A shown in FIG. 7A, the leakage check holes 19 have the same shape and size as the tube insertion holes 17 The tube insertion hole 17 may be formed so as to be deviated from both the extension line connecting one longitudinal end of the tube insertion hole 17 and the extension extending from the other end of the tube insertion hole 17, The tube insertion hole 17 may be formed in the same shape as the tube insertion hole 17 so as not to deviate from the extension line connecting one longitudinal end of the plurality of tube insertion holes 17 and the extension extending from the other end, The tube insertion hole 17 is formed to have the same shape as the tube insertion hole 17 but has a different inclination. An extension line connecting one longitudinal end of the plurality of tube insertion holes 17, It can be formed causing a departure from all of the connecting extension parts.

7B, the leak check holes 19 may be formed in a plurality of different sizes and shapes, and the leakage check holes 19 may have the same size and shape as the B shape, A plurality of leakage confirmation holes 19 may be formed to have different sizes and shapes and to have different slopes as in the C shape.

The leakage check hole 19 may be integrally formed with one side of the tube insertion hole 17 as shown in FIG. 7C. Alternatively, the leakage check hole 19 may be formed integrally with the leak check hole 19, A plurality of the leakage check holes 19 may be integrally formed by communicating a plurality of the leakage check holes 19 to either side of the tube insertion hole 17, The leakage check hole 19 may be integrally formed with a plurality of the leakage check holes 19 so as to have a different slope from the tube insertion hole 17 to one or both sides of the tube insertion hole 17. [

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are satisfied. Therefore, various equivalents And variations are possible.

1 is a perspective view of a conventional heat exchanger;

2 is an exploded perspective view showing a conventional heat exchanger.

3 is a cross-sectional view of a conventional heat exchanger.

4 is a perspective view of a heat exchanger of the present invention.

5 is an exploded perspective view showing the heat exchanger of the present invention.

6 is a cross-sectional view of a heat exchanger of the present invention.

7 is a plan view showing various types of header members;

DESCRIPTION OF REFERENCE NUMERALS

10: first header pipe 11:

13: tube fixing hole 15: first header member

17: Tube insertion hole 19: Leak check hole

20: second header pipe 25: second header member

30: tube 31: heat exchange medium flow passage

35: heat sink fin

40: inlet pipe 50: outlet pipe

190: Foreign matter

Claims (5)

A plurality of tubes (30) arranged in parallel in the air flow direction to form a heat exchange medium flow path (31); A plurality of radiating fins (35) interposed between the tubes (30); A first header member 15 formed with a plurality of tube insertion holes 17 to allow both ends of the tube 30 to pass therethrough and spaced apart from both ends of the tube 30 by a predetermined distance, )Wow; Both ends of the tube 30, which is seated on one side of the first header member 15 and the second header member 25 and penetrates the first and second header members 15 and 25, A first header pipe 10 and a second header pipe 20 having a plurality of tube fixing holes 13 formed therein; An inlet pipe (40) connected to the first header pipe (10) or the second header pipe (20) to receive a heat exchange medium, and an outlet pipe (50) through which the introduced heat exchange medium is discharged, The first header member 15 and the second header member 25 are provided at least between the one tube insertion hole 17 and the other tube insertion hole 17 and the outer side of the tube insertion hole 17 formed at the outermost side A leakage check hole 19 is formed in at least one place, And the leakage check hole (19) is formed in communication with the tube insertion hole (17). The method according to claim 1, And the leakage check hole (19) is integrally formed in the tube insertion hole (17). A plurality of tubes (30) arranged in parallel in the air flow direction to form a heat exchange medium flow path (31); A plurality of radiating fins (35) interposed between the tubes (30); A first header member 15 formed with a plurality of tube insertion holes 17 to allow both ends of the tube 30 to pass therethrough and spaced apart from both ends of the tube 30 by a predetermined distance, )Wow; Both ends of the tube 30, which is seated on one side of the first header member 15 and the second header member 25 and penetrates the first and second header members 15 and 25, A first header pipe 10 and a second header pipe 20 having a plurality of tube fixing holes 13 formed therein; An inlet pipe (40) connected to the first header pipe (10) or the second header pipe (20) to receive a heat exchange medium, and an outlet pipe (50) through which the introduced heat exchange medium is discharged, The first header member 15 and the second header member 25 are provided at least between the one tube insertion hole 17 and the other tube insertion hole 17 and the outer side of the tube insertion hole 17 formed at the outermost side A leakage check hole 19 is formed in at least one place, Wherein the leakage check hole (19) is formed between an extension line connecting one end portion in the longitudinal direction of the plurality of tube insertion holes (17) and an extension line connecting the other end portion. The method according to claim 1 or 3, And the leakage check holes (19) are one or more. delete

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