KR20210151441A - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger. The heat exchanger includes: a header tank; a core part; a first flange having flow paths through which a heat exchange medium is introduced and discharged; a second flange combined with the header tank, and having flow paths connected to the header tank to allow heat exchange media to be introduced and discharged therethrough; and a bypass valve selectively operated such that the heat exchange medium can be introduced into the core part or bypassed. Ends of the flow paths are not exposed to the outside on sides in which the first flange, the bypass valve and the second flange are stacked and opposed to each other, and the first flange, the bypass valve and the second flange are brought into surface contact with each other to form consecutive flow paths, thus simplifying a heat exchange medium flow path connection constitution between components combined with the bypass valve, which can lead to a reduction in manufacturing costs and time as well as easy assembly.

Description

heat exchanger {Heat exchanger}

The present invention relates to a heat exchanger comprising a bypass valve selectively operable to allow a heat exchange medium to pass through or bypass a core portion.

A heat exchanger is a device that absorbs heat from one side and radiates heat to the other side between two environments with a temperature difference.

Among these heat exchangers, the oil cooler is a cooling device that properly maintains the temperature of oil including engine oil and transmission oil. In addition, a bypass valve is installed in these oil coolers to prevent low-temperature oil from flowing into the oil cooler and cooling it, so that when oil cooling is not required, such as when a vehicle is cold starting, the incoming oil does not go through the inside of the oil cooler. The engine performance and efficiency can be improved by allowing the exhaust to be discharged directly through the bypass valve instead of through the bypass valve.

For example, a conventional oil cooler includes a pair of header tanks 10 spaced apart from each other as shown in FIG. 1, and a plurality of tubes having both ends connected to the pair of header tanks 10 to form a flow path ( 20), a heat dissipation fin 30 interposed between the tubes 20, a first flange 50 to which the inlet pipe 41 and the outlet pipe 42 are respectively coupled, and the first coupled to the header tank 10 2 flanges 60, and a bypass valve 70 interposed between the first flange 50 and the second flange 600, and the fixing bolt 80 as a fastening means is the first flange 50 ) and the bypass valve 70 and the second flange 60 are configured to pass through.

However, in the conventional oil cooler, the connector 90 is inserted into the flow paths 51 and 71 of the first flange 50 and the bypass valve 70 as shown in FIG. 2 and the flow paths are coupled to communicate with each other, and the connector 90 An O-ring 91 is fitted to seal the gap. Similarly, the connector 90 is also inserted into the flow paths 61 and 71 of the second flange 60 and the bypass valve 70 so that the flow paths are coupled to communicate with each other.

Accordingly, a separate connector 90 is manufactured and coupled to the first flange 50, the bypass valve 70, and the second flange 60, or the connector 90 is connected to the bypass valve 70 through cutting. Since it must be formed integrally with the , there is a problem in that it takes a lot of time and cost to manufacture.

KR 10-2016-0015584 A (2016.02.15.)

The present invention has been devised to solve the above problems, and an object of the present invention is to connect a heat exchange medium flow path between parts coupled to a bypass valve in a heat exchanger including a bypass valve capable of bypassing a heat exchange medium. It is to provide a heat exchanger that is easy to manufacture and assemble by improving the coupling structure and sealing structure for

The heat exchanger of the present invention for achieving the above object, at least one header tank in which a heat exchange medium is stored and flowed; a core part connected to the header tank through which a heat exchange medium flows and heat exchanges; a first flange having a flow path through which the heat exchange medium is introduced and a flow path through which the heat exchange medium is discharged; a second flange coupled to the header tank, the second flange communicating with the header tank and having a flow path through which the heat exchange medium flows into the header tank and a flow path through which the heat exchange medium is discharged from the header tank; and coupled between the first flange and the second flange, flow passages communicating with the flow passages of the first and second flanges are formed, and selectively connecting the flow passages of the first flange and the second flange or shut-off bypass valve; Including, the flow passages formed in the first flange, the second flange, and the bypass valve are respectively formed through the inside and do not protrude to the outside, and the first flange, the bypass valve and the second flange are in close contact with each other. Accordingly, a continuous flow path may be formed.

In addition, the bypass valve has a sealing member seating groove concavely formed along the periphery of the flow passages on a surface facing the first flange and a surface facing the second flange, and a sealing member is interposed in the sealing member seating groove, A gap between the first flange and the bypass valve may be closed, and a gap between the second flange and the bypass valve may be closed, respectively.

In addition, the first flange, the bypass valve and the second flange are sequentially stacked, and the first flange and the bypass valve have through-holes penetrating both surfaces in the stacking direction, and the second flange has a fastening hole. and passing through the through holes of the first flange and the bypass valve, one side is coupled to the fastening hole of the second flange part, and the other side is caught on the first flange so that the first flange, the bypass valve and the second flange are It may further include a fastening means for closely coupling in the stacking direction.

In addition, the fastening hole of the second flange may be formed in a portion protruding outward from the body of the first flange, the bypass valve, and the second flange.

In addition, the through hole of the bypass valve may be formed at a position spaced apart from the center of the bypass valve in the height direction.

In addition, a guide pin is formed to protrude from a surface facing each other on any one of the first flange and the bypass valve, and a guide hole into which the guide pin is inserted is formed on the other surface at a position corresponding to the guide pin, , A guide pin is formed to protrude from a surface facing each other in any one of the second flange and the bypass valve, and a guide hole into which the guide pin is inserted at a position corresponding to the guide pin may be formed on the other surface. have.

In addition, a plurality of guide pins and guide holes may be formed in any one of the first flange and bypass valve, and a plurality of guide pins and guide holes may be formed in any one of the second flange and bypass valve.

In addition, the sealing member seating grooves of the bypass valve are formed at positions spaced apart from each other in the radial direction around the flow passages, and a chamfer is formed between the sealing member seating groove and the end of the flow path, and the chamfered portion is the corresponding first It may be in contact with the surface of the first flange or the second flange.

In addition, the thickness of the sealing member is formed larger than the depth of the sealing member seating groove, the first flange, the bypass valve and the second flange are stacked and closely coupled in a stacked direction by a fastening means, the fastening The sealing member is compressed by the fastening force of the means, and the sealing member may be in close contact with the surface of the first flange or the second flange corresponding to the sealing member seating groove.

In addition, the sealing member may have a projection formed on at least one of the inner surface and the outer surface in the radial direction.

In addition, the header tank is provided with a pair spaced apart from each other, and the core part includes a plurality of tubes having both ends connected to the pair of header tanks and a heat dissipation fin interposed between the tubes, and as the heat exchange medium, engine oil or engine oil or It may be a heat exchanger for cooling the transmission oil.

The heat exchanger of the present invention has advantages in that the heat exchange medium flow path connection configuration between parts coupled to the bypass valve in the heat exchanger including the bypass valve is simple, thereby reducing manufacturing cost and time, and has the advantage of easy assembly.

1 and 2 are an assembled perspective view and a partial cross-sectional view showing an oil cooler of a conventional heat exchanger.
3 to 5 are an assembled perspective view and a partially exploded perspective view showing a heat exchanger according to an embodiment of the present invention.
6 is a partial cross-sectional view of a heat exchanger according to an embodiment of the present invention.
7 and 8 are an assembled perspective view and an exploded perspective view illustrating a bypass valve and a sealing member in a heat exchanger according to an embodiment of the present invention.

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

3 to 5 are an assembled perspective view and a partially exploded perspective view showing a heat exchanger according to an embodiment of the present invention, and FIG. 6 is a partial cross-sectional view of the heat exchanger according to an embodiment of the present invention.

First, the heat exchanger according to an embodiment of the present invention may be a heat exchanger for cooling engine oil or transmission oil as a heat exchange medium. And as shown, the heat exchanger according to an embodiment of the present invention is largely composed of a header tank 500 , a core portion C, a first flange 100 , a second flange 200 , and a bypass valve 300 . may be, and may further include a fastening means 400 for coupling the first flange 100 , the second flange 200 , and the bypass valve 300 .

The header tank 500 may be formed by combining a header and a tank, and an empty space in which a heat exchange medium is stored and flows may be formed by combining the header and the tank. In addition, the header tank 500 is configured as a pair and is spaced apart from each other in the longitudinal direction and arranged side by side, and the long side formed relatively long may be arranged so as to face the height direction. Also, in the pair of header tanks 500, tube insertion holes penetrating inside and outside may be formed on opposite sides. In addition, a baffle is coupled to the inside of the header tank 500 and a space through which the heat exchange medium flows may be partitioned by the baffle. In addition, the header tank 500 may have tube insertion holes into which the tube 600 is inserted, and the header tank 500 on the left has communication holes passing through the inner and outer peripheral surfaces so that the heat exchange medium can be introduced and discharged. can be formed.

The core part (C) is a part where substantial heat exchange occurs, and may be largely composed of a plurality of tubes (600) and a plurality of heat dissipation fins (700). The tubes 600 may be formed to be relatively long in the longitudinal direction in the form of a tube through which a heat exchange medium may flow along the inside, and the tubes 600 may be disposed to be spaced apart from each other in the height direction. In addition, the tubes 600 are assembled by being inserted into the tube insertion holes of the header tank 500 with one end of the header tank 500 having an open flow path on one side, and the other end of the header tank 500 with an open flow path disposed on the other side. It is inserted into the tube insertion holes and assembled, and the pair of header tank 500 and the tube 600 may be coupled to each other by brazing or the like in an assembled state. In addition, the heat dissipation fin 700 serves to improve heat exchange efficiency, for example, may be formed in the form of a corrugated fin, interposed between the tubes 600 and coupled to the tube 600 by brazing or the like.

The first flange 100 may include a first inlet flow path 110 through which a heat exchange medium is introduced from the outside, and a first discharge flow path 120 through which the heat exchange medium passed through the core portion C is discharged. The first inlet flow path 110 and the first discharge flow path 120 may be respectively formed to pass through both left and right side surfaces of the first flange 100 at positions spaced apart from each other in the vertical direction in the height direction. And an inlet pipe 130 and an outlet pipe 140 may be coupled to the left side of the first flange 100 , and for example, the inlet pipe 130 is partially inserted into the first inlet flow path 110 to flow through each other. may be communicated, and a portion of the outlet pipe 140 may be inserted into the first discharge flow path 120 to communicate with each other. In addition, the first flange 100 may be formed in a planar shape on the right side in the longitudinal direction.

The second flange 200 may be coupled to any one of the header tanks 500 among the pair of header tanks 500 . The second flange 200 may be formed so that the right side in the longitudinal direction has a shape corresponding to the shape of the outer circumferential surface of the header tank 500 , and the second flange 200 is assembled such that the right side is in contact with the header tank 500 . It may be coupled to and fixed to the header tank 500 by brazing or the like. And the left side of the second flange 200 may be formed in a planar shape. In addition, the second flange 200 has a second inlet flow path 210 through which the heat exchange medium flows toward the header tank 500 and a second discharge flow path 220 through which the heat exchange medium discharged from the header tank 500 flows. may be formed, and the second inlet channel 210 and the second outlet channel 220 are positioned corresponding to the inlet hole 510 and the outlet hole 520 formed to penetrate the outer and inner surfaces of the header tank 500 . As such, the second inlet flow path 210 may communicate with the inlet hole 510 , and the second discharge flow path 220 may communicate with the discharge hole 520 . In addition, the second inlet flow path 210 and the second discharge flow path 220 may be respectively formed to pass through both left and right side surfaces of the second flange 200 at positions spaced apart from each other vertically in the height direction.

The bypass valve 300 selectively allows the heat exchange medium introduced from the outside to be discharged after heat exchange through the core part (C) by operation, or the heat exchange medium introduced from the outside is discharged without passing through the core part (C). It is a valve that does the job. The bypass valve 300 may be coupled between the first flange 100 and the second flange 200 spaced apart from each other in the longitudinal direction. In addition, the bypass valve 300 may have a first connection flow path 310 and a second connection flow path 320 penetrating both sides in the longitudinal direction, and the first connection flow path 310 has a left end of a first flange. (100) may be connected to and communicated with the first inlet flow path 110, and the right end may be connected to and communicated with the second inlet flow path 210 of the second flange 200. In addition, the second connection passage 320 has a left end connected to and communicating with the first discharge passage 120 of the first flange 100 , and a right end of the second connection passage 220 of the second flange 200 . It can be connected and communicated. In addition, the bypass valve 300 has a bypass flow path 330 that connects the first connection flow path 310 and the second connection flow path 320 to communicate with each other, and the bypass flow path 330 has an on/off valve ( 340 is installed so that the bypass flow path 330 is opened or closed according to the operation of the on-off valve 340 . At this time, the operation method of the on/off valve 340 of the bypass valve 300 may be formed in various methods such as mechanical, electrical, and electronic, and may be formed manually or automatically, for example, heat exchange by sensing the temperature of the heat exchange medium. It may be configured to operate automatically depending on the temperature of the medium. Thus, according to the operation of the opening/closing valve 340 of the bypass valve 300 , the heat exchange medium introduced through the first inlet flow path 110 of the first flange 100 is transferred to the first connection flow path ( 310) and the second inlet flow path 210 of the second flange 200, and the header tank 500 on the left side in turn, may flow into the core part C, and after heat exchange passing through the core part C The heat exchange medium is the header tank 500 on the left, the second discharge passage 220 of the second flange 200 , and the second connection passage 320 of the bypass valve 300 and the first of the first flange 100 . It may be discharged to the outside through the discharge passage 120 in turn. Alternatively, the heat exchange medium introduced through the first inlet flow path 110 of the first flange 100 passes through the bypass flow path 330 of the bypass valve 300 to the first discharge flow path 120 of the first flange 100 . ), the heat exchange medium may not pass through the core part (C).

In addition, the bypass valve 300 may be coupled in a pressurized state in the stacking direction in a state interposed between the first flange 100 and the second flange 200, the first flange 100 and the bypass In a state in which the valve 300 and the second flange 200 are sequentially stacked in the longitudinal direction, the valve 300 and the second flange 200 are pressed in the stacking direction by the fastening means 400 so that the surfaces facing each other may be closely coupled. At this time, the first flange 100 and the bypass valve 300 have through-holes 150 and 350 penetrating both sides in the longitudinal direction at positions corresponding to each other, and the through-holes 150 are formed in the second flange 200 . , 350) is formed at a position corresponding to the fastening hole 250, a separate fastening means 400 passes through the through-holes 150 and 350 and is coupled to the fastening hole 250, whereby the first flange 100 and the bypass valve 300 and the second flange 200 may be closely coupled in the stacking direction. As an example, the fastening means 400 may be a bolt, and the fastening means 400 has one side formed with a male screw and is fastened to the fastening hole 250 of the second flange 200, and the other side of the head is coupled to the first flange ( 100) and can be combined.

Here, the bypass valve 300 has a left side facing the first flange 100 and a right side facing the second flange 200 may be formed in a planar shape, respectively, and are respectively concavely sealed on both sides in the longitudinal direction. A member seating groove 360 may be formed. In this case, the sealing member seating grooves 360 may be respectively formed at positions spaced apart from each other in the radial direction along the circumference from the ends of the first connection flow path 310 and the second connection flow path 320 . In addition, an O-ring that is a sealing member 370 may be inserted into the sealing member seating groove 360 to be placed therein. Thus, the sealing members 370 are inserted into the bypass valve 300 and laminated together with the first flange 100 and the second flange 200 in an assembled state, and the sealing member 370 is compressed and pressed, so that each A gap between the first flange 100 and the bypass valve 300 around the portion where the flow paths are connected may be closed, and a gap between the second flange and the bypass valve may be closed. Accordingly, the first flange 100 , the second flange 200 , and the bypass valve 300 are respectively formed so that the flow passages pass through the inside and do not protrude to the outside, and the first flange 100 and the second flange 200 . ) and the bypass valve 300 are in close contact with each other and are in close contact with each other, so that the connected portions of the flow paths are sealed to form a continuous flow path.

Therefore, in the heat exchanger of the present invention, the configuration of the heat exchange medium flow path connection between the parts coupled to the bypass valve in the heat exchanger including the bypass valve is simple, and thus the manufacturing cost of the heat exchanger can be reduced and the manufacturing time can be shortened. There is this.

In addition, the fastening hole 250 formed in the second flange 200 is formed in a portion protruding outward from the body of the first flange 100 , the second flange 200 and the bypass valve 300 , the fastening means It is possible to prevent the fastening force by 400 from being directly transmitted to the header tank 500 .

Also, the through hole 350 of the bypass valve 300 may be formed at a position spaced apart from the center of the bypass valve 300 in the height direction. That is, the through hole 350 is formed at a position slightly spaced downward from the center of the bypass valve 300 in the height direction, so that the upper and lower positions of the bypass valve 300 are reversed to prevent assembly.

In addition, a guide pin 180 is formed to protrude from a surface facing each other on any one of the first flange 100 and the bypass valve 300 , and the guide pin 180 is formed on the other surface at a position corresponding to the guide pin 180 . A guide hole 380 into which the guide pin 180 is inserted may be formed. For example, the guide pin 180 may protrude from the first flange 100 , and the guide hole 380 may be concavely formed in the bypass valve 300 . In addition, the guide pin 180 and the guide hole 380 may be configured in plurality, respectively, and may be formed to be spaced apart from each other. Thus, the first flange 100 and the bypass valve 300 can be coupled so that the relative positions of each other exactly match, the positions between the flow paths corresponding to each other can also be accurately matched, and the components coupled to each other can be prevented from rotating. can

Similarly, a guide pin 280 is formed to protrude from a surface facing each other on any one of the second flange 200 and the bypass valve 300 , and a guide pin is formed at a position corresponding to the guide pin 280 on the other surface. A guide hole 380 into which the 280 is inserted may be formed. For example, the guide pin 280 may be formed to protrude from the second flange 200 , and the guide hole 380 may be formed to be concave in the bypass valve 300 . In addition, the guide pin 280 and the guide hole 380 may be configured in plurality, respectively, and may be formed to be spaced apart from each other.

Also, the sealing member seating groove 360 of the bypass valve 300 may be formed at positions spaced apart from each other in a radial direction around the first connection flow path 310 and the second connection flow path 320 . When the first connection flow path 310 is described as an example, a face seal part 361 which is the remaining flesh portion may be formed between the sealing member seating groove 360 and the end of the first connection flow channel 310, and the face seal part 361 may be in contact with the corresponding surface of the first flange 100 or the second flange 200 . Thus, the sealing member 370 may not be separated from both the radially outward and inward directions, so that a reliable sealing of the gap can be achieved.

In addition, the thickness of the sealing member 370 may be formed to be larger than the depth of the sealing member seating groove 360 , and the first flange 100 , the bypass valve 300 , and the second flange 200 are stacked. When the sealing member 370 is compressed by the fastening force of the fastening means 400 when closely coupled in the longitudinal direction, which is the stacked direction by the fastening means 400 , the sealing member 370 is formed in the sealing member seating groove 360 . ) and the corresponding surface of the first flange 100 or the second flange 200, respectively, can be kept in close contact with each other.

7 and 8 are an assembled perspective view and an exploded perspective view illustrating a bypass valve and a sealing member in a heat exchanger according to an embodiment of the present invention.

As shown, the sealing member 370 may have a projection 371 formed on at least one of an inner surface and an outer surface in a radial direction. For example, in the sealing member 370 of the O-ring shape, protrusions 371 may be formed on both the radially outer surface and the inner surface, and a plurality of protrusions 371 are formed to be arranged spaced apart along the circumferential direction. can be Here, in the sealing member seating groove 360 in which the sealing member 370 is generally inserted and seated, the gap between the outer diameter and the inner diameter is slightly larger than the diameter of the sealing member 370, so that the projection 371 is formed. When the sealing member 370 is inserted into the sealing member seating groove 360, the sealing member 370 is inserted into the sealing member seating groove 360 in a state in which the projection 371 is compressed and deformed, so the sealing member 370 ) may not be separated from the sealing member seating groove 360, so that assembly performance may be improved.

In addition, the first inlet flow path 110 of the first flange 100 , the first connection flow path 310 of the bypass valve 300 , and the first connection flow path 310 of the bypass valve 300 and the second flange (200) of the second inlet flow path 210, the first discharge flow path 120 of the first flange 100, the second connection flow path 320 of the bypass valve 300, the bypass valve 300 In each of the two connection passages 320 and the second discharge passage 220 of the second flange 200 , the end portions of the passages are formed to protrude, and portions inserted into the passages corresponding to each other may not exist. That is, the first flange 100 and the bypass valve 300 are formed so that there is no part protruding in the form of a tube at the end of the flow path on the surface where the first flange 100 and the bypass valve 300 are in contact with each other, so that there is no part inserted and connected between the flow paths corresponding to each other. can be Accordingly, the structures of the first flange 100 , the second flange 200 , and the bypass valve 300 are simplified to facilitate manufacturing, thereby reducing manufacturing cost and manufacturing time, and assembling property can also be improved.

In addition, the first inlet flow path 110 of the first flange 100 , the first connection flow path 310 of the bypass valve 300 , and the first connection flow path 310 of the bypass valve 300 and the second flange (200) of the second inlet flow path 210, the first discharge flow path 120 of the first flange 100, the second connection flow path 320 of the bypass valve 300, the bypass valve 300 The second connection flow path 320 and the second discharge flow path 220 of the second flange 200 may be configured such that there is no tubular structure such as a connector installed between the flow paths corresponding to each other and inserted into the flow paths. have. That is, since there is no need to configure a separate connector or the like to connect the flow paths corresponding to and communicate with each other, the structure and configuration are simplified to facilitate manufacturing, thereby reducing manufacturing cost and manufacturing time, and assembling property can be improved.

The present invention is not limited to the above-described embodiments, and the scope of application is varied, and anyone with ordinary knowledge in the field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims It goes without saying that various modifications are possible.

100: first flange
110: first inflow flow path 120: first discharge flow path
130: inlet pipe 140: outlet pipe
150: through hole 180: guide pin
200: second flange
210: second inflow flow path 220: second discharge flow path
250: fastener 280: guide pin
300: bypass valve
310: first connection flow path 320: second connection flow path
330: bypass flow path 340: on-off valve
350: through hole 360: sealing member seating groove
361: face-to-face
370: sealing member 371: projection
380: guide hole
400: fastening means 500: header tank
600: tube 700: heat sink fin
C: core

Claims (11)

one or more header tanks in which a heat exchange medium is stored and flows;
a core part connected to the header tank through which a heat exchange medium flows and heat exchanges;
a first flange having a flow path through which the heat exchange medium is introduced and a flow path through which the heat exchange medium is discharged;
a second flange coupled to the header tank and communicating with the header tank and having a flow path through which a heat exchange medium flows into the header tank and a flow path through which the heat exchange medium is discharged from the header tank; and
It is interposed between the first flange and the second flange and coupled, flow passages communicating with the flow passages of the first flange and the second flange are formed, and selectively connecting or blocking the flow passages of the first flange and the second flange. capable bypass valve; including,
The flow paths formed in the first flange, the second flange, and the bypass valve are respectively formed through the inside and do not protrude to the outside,
A heat exchanger, characterized in that the first flange, the bypass valve and the second flange are in close contact with each other to form a continuous flow path.
According to claim 1,
A sealing member seating groove is formed in the bypass valve concavely along the periphery of the flow passages on a surface facing the first flange and a surface facing the second flange, and a sealing member is interposed in the sealing member seating groove, each A heat exchanger, characterized in that the gap between the first flange and the bypass valve is closed and the gap between the second flange and the bypass valve is closed.
According to claim 1,
The first flange, the bypass valve and the second flange are sequentially stacked,
The first flange and the bypass valve have through-holes penetrating both surfaces in the stacking direction, and the second flange has a fastening hole,
Passing through the through holes of the first flange and the bypass valve, one side is coupled to the fastening hole of the second flange part, and the other side is caught on the first flange so that the first flange, the bypass valve and the second flange are stacked in a stacking direction. The heat exchanger further comprising a fastening means for close coupling.
4. The method of claim 3,
The fastening hole of the second flange is a heat exchanger, characterized in that formed in a portion protruding outward than the body of the first flange, the bypass valve and the second flange.
4. The method of claim 3,
The heat exchanger, characterized in that the through-hole of the bypass valve is formed at a position spaced apart from the center of the bypass valve in the height direction.
According to claim 1,
A guide pin is formed to protrude from one of the first flange and the bypass valve on a surface facing each other, and a guide hole into which the guide pin is inserted is formed on the other surface at a position corresponding to the guide pin,
In any one of the second flange and the bypass valve, a guide pin is formed to protrude from a surface facing each other, and a guide hole into which the guide pin is inserted is formed in the other surface at a position corresponding to the guide pin. the heat exchanger.
7. The method of claim 6,
A heat exchanger, characterized in that a plurality of guide pins and guide holes are formed in any one of the first flange and bypass valve, and a plurality of guide pins and guide holes are formed in any one of the second flange and bypass valve .
3. The method of claim 2,
The sealing member seating grooves of the bypass valve are formed at positions spaced apart from each other in the radial direction around the flow passages, and a faceted portion is formed between the sealing member seating groove and the flow passage ends,
The heat exchanger, characterized in that the face contact portion is in contact with the corresponding surface of the first flange or the second flange.
3. The method of claim 2,
The thickness of the sealing member is formed larger than the depth of the sealing member seating groove,
The first flange, the bypass valve and the second flange are stacked and tightly coupled in a stacked direction by a fastening means,
The sealing member is compressed by the fastening force of the fastening means, and the sealing member is in close contact with the surface of the first flange or the second flange corresponding to the sealing member seating groove.
3. The method of claim 2,
The sealing member is a heat exchanger, characterized in that the projection is formed on at least one of the inner surface and the outer surface in a radial direction.
According to claim 1,
The header tank is provided with a pair spaced apart from each other,
The core part includes a plurality of tubes having both ends connected to the pair of header tanks and a heat dissipation fin interposed between the tubes,
Heat exchanger, characterized in that for cooling the engine oil or transmission oil as the heat exchange medium.

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