JP2017003250A - Can-type heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a can-type heat exchanger which can increase the heat exchange efficiency, reduce the weight and size, thereby simplify the layout even in a narrow engine room inside, and is easy to obtain an installation space.SOLUTION: A can-type heat exchanger of the present invention includes: a housing in which one side is opened, the other side is closed, a space is formed inside and a first inflow port and a first discharge port, which are put in communication with the space, are formed in a side surface; a heat radiation unit inserted in the space, in which connection flow channels are formed by plural plates stacked and operating fluids different from each other are exchanged heat with each other while passing through the respective connection flow channels; and a cover cap to which the heat radiation unit is integrally installed and which is formed with a second inflow port and a second discharge port which are put in communication with the other of the connection flow channels, and is installed to the one opened side of the housing.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a can-type heat exchanger. More specifically, the heat exchange efficiency can be increased and the weight and the size can be reduced. The present invention relates to a can-type heat exchanger that can be simplified.

Generally, a heat exchanger transfers heat from a fluid having a high temperature to a fluid having a low temperature through a heat transfer wall, and is used for a heater, a cooler, an evaporator, a condenser, and the like.
Such a heat exchanger reuses heat energy as it is or by adjusting the temperature of the working fluid flowing in to suit the application. It is usually applied to vehicle air conditioning systems, transmission oil coolers, etc., and installed in the engine room.

Here, when the heat exchanger is mounted in an engine room having a limited space, problems of securing space and mounting means occur. Therefore, the heat exchanger is reduced in size, weight, and height to solve these problems. Research for efficiency and high functionality continues.
However, in the conventional heat exchanger, the temperature of the working fluid must be adjusted according to the state of the vehicle to supply the working fluid to the engine, transmission, or air conditioner of the vehicle. Another branch circuit and valve must be installed on the flow path, which increases the number of components and the number of assembly steps, resulting in a complicated layout (see, for example, Patent Document 1).
In addition, when a separate branch circuit and valve are not installed, it is impossible to control the amount of heat exchange by controlling the flow rate of the working fluid, which makes it impossible to efficiently control the temperature of the working fluid. is there.

  In addition, the conventional heat exchanger has to be increased in size in order to increase the heat exchange efficiency, and in order to control the flow rate of the working fluid, a valve must be separately provided outside. Disadvantages include difficult packaging and increased weight and manufacturing costs. As a result, when the heat exchanger is mounted in a narrow engine room, the layout becomes complicated, and further, it is difficult to secure a mounting space.

  The matters described in this background art are described in order to increase the understanding of the background of the invention, and are not included in the prior art already known to those having ordinary knowledge in the field to which this technology belongs. May include matters.

JP 2011-226373 A

  The present invention has been made in view of the above problems, and an object of the present invention is to increase the heat exchange efficiency of the heat exchanger when each working fluid exchanges heat while flowing inside. In addition to simplifying the layout inside the narrow engine room by forming the shape into a can shape that can reduce the weight and capacity, it is easy to secure the installation space and improve the mountability and packageability. It is to provide a heat exchanger.

  In order to achieve the above object, a can-type heat exchanger according to an embodiment of the present invention has a first surface that is open at one surface, closed at the other surface, has a space formed therein, and is connected to the space at a side surface. A housing in which an inflow port and a first discharge port are formed, and a plurality of plates are stacked and inserted into the space to form a connection channel alternately, and any one of the connection channels. Two connected flow paths are connected to a space, and heat dissipation units that exchange heat with each other while different working fluids pass through each connected flow path, and a heat dissipation unit that is integrally attached to one surface corresponding to the space, are connected. A second inflow port and a second discharge port connected to another one of the flow paths are formed, and includes a cover cap that is attached to one surface of the housing that is opened.

The cover cap may include a coupling part formed by being integrally bent on the outer peripheral surface toward the housing.
The coupling part may be clinched around the outer peripheral surface in a state of surrounding the outer peripheral surface of the housing.

A sealing may be interposed between the housing and the cover cap.
The first inlet and the first outlet may be formed at a position separated from a side surface of the housing.
The second inlet and the second outlet may be formed at spaced positions on one surface of the cover cap.

The first inlet and the first outlet may be formed at positions intersecting with the second inlet and the second outlet, respectively.
The housing is formed in a cylindrical shape, but may be formed by injection molding.
The housing may be formed of a plastic material.

The plate may be formed in a disc shape, and a first connection hole t6 and a second connection hole may be formed corresponding to the second inlet and the second outlet, respectively.
The heat radiating unit is mounted on one surface of the heat radiating unit fixed to the cover cap, and has a first fixing plate in which first and second through holes are formed corresponding to the first and second connecting holes, and heat radiating. And a second fixing plate mounted on the other surface of the unit inserted into the space.

The plate may be formed with a plurality of protrusions spaced apart at a set interval, and the distribution protrusion may be formed from the center to the outer peripheral surface correspondingly between the first inlet and the first outlet.
The protrusion may be formed in a hemispherical shape, and may be formed to protrude in the same direction as the distribution protrusion on one surface of the plate.

Each said working fluid can be comprised with the cooling water which flows in from a radiator, and the transmission oil which flows in from an automatic transmission.
The cooling water circulates through the first inlet and the first outlet, the transmission oil circulates to the heat dissipation unit through the second inlet and the second outlet, and the cooling water flows into each connection channel. The first connection channel that moves and the second connection channel that the transmission oil flows in to move can be included.

At least one mounting part may be integrally formed around the other surface of the housing.
The cover cap is formed of a metal material, and the heat dissipating unit can be integrally coupled by brazing welding.
A mounting plate may be mounted on the other surface of the cover cap, and a mounting portion may be integrally formed on the outer peripheral surface of the mounting plate.

According to the present invention, when the can-type heat exchangers 100 and 200 according to the embodiment of the present invention configured as described above are applied, when each working fluid exchanges heat while flowing inside, heat exchange is performed. Efficiency could be increased.
In addition, by forming a can shape that can be reduced in weight and size, the layout can be simplified inside a narrow engine room. As a result, the installation space inside the engine room can be easily secured, and the mountability and packageability can be improved.

In addition, the cover caps 130 and 230, to which the heat radiation units 110 and 210 are integrally attached, are coupled to the housings 101 and 201 manufactured by injection molding to complete the manufacturing, thereby facilitating the manufacturing and assembling work. We were able to save money and improve productivity.
At the same time, since the presence or absence of defects in the heat dissipation units 110 and 210 can be confirmed before the cover caps 130 and 230 are assembled, it is possible to prevent the occurrence of defects in the finished product and improve the merchantability.

It is a block block diagram of the vehicle cooling system to which the can type heat exchanger which concerns on embodiment of this invention is applied. It is a perspective view of a can type heat exchanger by an embodiment of the present invention. It is a disassembled perspective view of the can type | mold heat exchanger which concerns on embodiment of this invention. It is sectional drawing along the AA line of FIG. It is sectional drawing along the BB line of FIG. It is a disassembled perspective view of the thermal radiation unit applied to the can type | mold heat exchanger which concerns on embodiment of this invention. It is a perspective view of the plate in the thermal radiation unit applied to the can type | mold heat exchanger which concerns on embodiment of this invention. It is a perspective view of the operating state of the can type heat exchanger concerning the embodiment of the present invention. It is sectional drawing of the operation state of the can type | mold heat exchanger which concerns on embodiment of this invention. It is a perspective view of the can type | mold heat exchanger which concerns on other embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Prior to this, the embodiment described in the present specification and the configuration shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical ideas of the present invention. It should be understood that there are various equivalents and variations that can be substituted at the time of this application.

The description of the specification is for clearly explaining the present invention, and unnecessary portions for the description are omitted, and the same reference numerals are used for the same or similar components throughout the specification. Was attached.
The size and thickness of each component in the drawings are arbitrarily shown for convenience of explanation, and the present invention is not necessarily limited to what is shown in the drawings. The thickness is shown enlarged for the sake of clarity.

In the entire specification, a description that "a part" includes a certain component does not exclude the other component but includes another component unless otherwise stated to the contrary. Means you can.
In addition, terms such as “... unit”, “... means”, “... part”, “... member” described in the specification are generic to perform at least one function or operation. This means a unit of various structures.

FIG. 1 is a block diagram of a vehicle cooling system to which a can-type heat exchanger according to an embodiment of the present invention is applied.
As shown in FIG. 1, a can-type heat exchanger 100 according to an embodiment of the present invention is applied to an automatic transmission cooling system for a vehicle.

  As shown in FIG. 1, the automatic transmission cooling system includes a cooling line (cooling line) in which cooling water cooled while passing through a radiator 20 to which a cooling fan 21 is mounted cools the engine via a water pump 10. , Hereinafter referred to as “CL”), and the cooling line (CL) further includes a heater core 30 communicating with a vehicle heating system (not shown).

Here, the can-type heat exchanger 100 according to the embodiment of the present invention adjusts the temperature by mutually exchanging heat between the working fluids flowing into the can.
For this reason, the can-type heat exchanger 100 according to the embodiment of the present invention is provided between the water pump 10 and the heater core 30 and automatically operated by an oil line (hereinafter referred to as “OL”). It is connected to the transmission 40.

  That is, in the present embodiment, each of the working fluids is composed of cooling water flowing from the radiator 20 and transmission oil flowing from the automatic transmission 40, and the can-type heat exchanger 100 causes the cooling water and the transmission to move. The temperature of the transmission oil is adjusted by exchanging heat with the oil.

FIG. 2 is a perspective view of a can-type heat exchanger according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view thereof.
As shown in FIGS. 2 and 3, the can-type heat exchanger 100 according to the embodiment of the present invention includes a housing 101, a heat radiating unit 110, and a cover cap 130.

The housing 101 is open on one side and closed on the other side to form a space S therein. The housing 101 has a first inlet 103 and a first outlet 105 communicating with the space S on the side surface.
Here, the housing 101 is formed in a cylindrical shape, but can be manufactured by injection molding.

On the other hand, the housing 101 may be formed in a circular shape or a polygonal shape.
Such a housing 101 is made of a plastic material.
The housing 101 may be integrally formed with at least one mounting portion 107 around the other surface.

  The mounting portion 107 is for mounting the can-type heat exchanger 100 inside the engine room. In the present embodiment, three mounting portions 107 are formed at positions separated by a set angle along the periphery of the housing 101. The

In the present embodiment, it has been described as an embodiment that the mounting portion 107 is formed on the other surface of the housing 101 and is separated from the outer peripheral surface by a set angle. However, the present invention is not limited to this. Instead, the position and number of the mounting portions 107 can be arbitrarily changed and applied.
On the other hand, each of the first inlet 103 and the first outlet 105 can be formed so as to protrude at a position separated by a set angle along the side surface of the housing 101.

  4 is a cross-sectional view taken along line AA in FIG. 2, FIG. 5 is a cross-sectional view taken along line BB in FIG. 2, and FIG. 6 is a canal according to an embodiment of the present invention. FIG. 7 is an exploded perspective view of a heat radiating unit applied to the mold heat exchanger, and FIG. 7 is a perspective view of a plate in the heat radiating unit applied to the can type heat exchanger according to the embodiment of the present invention.

As shown in FIGS. 4 to 7, in this embodiment, the heat radiating unit 110 is inserted into the space S, and a plurality of plates 111 are stacked to form connection channels 113 alternately.
In such a heat radiating unit 110, any one of the connection channels 113 is connected to the space S, and different working fluids exchange heat with each other while passing through the connection channels 113. Is done.

The cover cap 130 is attached to the opened surface of the housing 101, and the heat dissipation unit 110 is integrally attached to the space S.
The cover cap 130 is formed with a second inlet 131 and a second outlet 133 that are connected to the other one of the connecting channels 113.

Here, the cover cap 130 is formed of a metal material, and the heat dissipation unit 110 is integrally coupled by brazing welding.
That is, the heat dissipation unit 110 is first assembled to the cover cap 130 before the cover cap 130 is coupled to the housing 101.

  As a result, the heat radiating unit 110 inspects the leakage of the working fluid flowing in from the other one of the connection channels 113 connected to the second inlet 131 and the second outlet 133 in advance, and operates the heat radiating unit 110. It is possible to prevent the occurrence of defects.

Meanwhile, in the present embodiment, the second inlet 131 and the second outlet 133 may be formed to be separated from one surface of the cover cap 130.
That is, the second inlet 131 and the second outlet 133 can be formed at positions intersecting with the first inlet 103 and the first outlet 105, respectively.

Thereby, the cooling water circulates in the space S and the heat radiating unit 110 through the first inlet 103 and the first outlet 105, and the transmission oil is supplied to the heat radiating unit 110 through the second inlet 131 and the second outlet 133. Can circulate.
Here, the cover cap 130 further includes a coupling portion 135 formed by being integrally bent toward the housing 101 on the outer peripheral surface.

The coupling part 135 may be joined by at least one clinching around the outer peripheral surface in a state of surrounding the outer peripheral surface of the housing 101.
That is, the cover cap 130 is firmly coupled to the housing 101 by repeatedly clinching around the outer peripheral surface of the coupling portion 135.

In this embodiment, the housing 101 may be interposed between the cover cap 130 and the sealing 140.
The sealing 140 seals between the space S and the cover cap 130 to prevent the cooling water flowing into the space S from leaking outside.

  On the other hand, in the present embodiment, the heat radiating unit 110 includes cooling water that flows through the first and second inflow ports 103 and 131 with any one of the connection channels 113 connected to the space S. The transmission oil exchanges heat with each other while passing through each connection channel 113.

  That is, when the transmission oil flows into the inside through the second inlet 131 and circulates, the heat dissipation unit 110 flows in the opposite direction to the cooling water flowing into the space S of the housing 101 through the first inlet 103. The flow directions are counterflowed to exchange heat with each other.

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Here, each connection flow path 113 includes a first connection flow path 113a through which cooling water flowing into the space S moves, and a second connection flow path 113b through which transmission oil flows and moves.
In this embodiment, the plate 111 is formed in a disk shape corresponding to the outer shape of the housing 101, but the first and second connection holes 115 correspond to the second inlet 131 and the second outlet 133. 117 are formed.

Accordingly, the transmission oil that has flowed in through the second inlet 131 flows into the heat radiating unit 110 through the first connection hole 115 and passes through the second connection flow path 113b, and then the second through the second connection hole 117. It is discharged to the discharge port 133.
On the other hand, as shown in FIG. 7, the plate 111 is formed with a plurality of protrusions 118 protruding at a set interval, and the outer periphery from the center correspondingly between the first inlet 103 and the first outlet 105. Distributing protrusions 119 can be formed up to the surface.

Each protrusion 118 is formed in a hemispherical shape, is formed to protrude from one surface of the plate 111 in the same direction as the distribution protrusion 119, and a plurality of protrusions 118 are formed along the circumferential direction from the center of the plate 111 toward the outer peripheral surface. be able to.
The plate 111 configured as described above is laminated so that the surfaces from which the protrusions 118 and the distribution protrusions 119 protrude are in contact with each other.

Accordingly, the heat radiating unit 110 includes a plurality of two plates 111 that are coupled so that the protrusions 118 and the distribution protrusions 119 are in contact with each other, and the first connection flow path 113a and the second connection flow path 113b are formed. It can be formed to intersect.
Here, each protrusion 118 generates flow resistance in the cooling water passing through the first connection channel 113a of the heat radiating unit 110 and the transmission oil passing through the second connection channel 113b, thereby increasing the heat exchange efficiency. Let

The distribution protrusion 119 distributes the flow of each working fluid so as to increase the distance in which the transmission oil and the cooling water that pass through the first and second connection flow paths 113a and 113b flow. The heat dissipation unit 110 is caused to flow evenly over the entire area of the plate 111.
The heat dissipating unit 110 configured as described above further includes first and second fixing plates 121 and 127.

First, the first fixing plate 121 is mounted on one surface of the heat dissipation unit 110 fixed to the cover cap 130, and the first and second through holes 123 and 125 correspond to the first and second connection holes 115 and 117. It is formed.
The second fixing plate 127 is attached to the other surface of the heat dissipation unit 110 inserted into the space S.
Here, the second fixed plate 127 closes the first and second connection holes 115 and 117 formed in the plate 111 on the other surface of the heat radiating unit 110 and flows in through the first and second connection holes 115 and 117. Prevents the transmission oil from leaking out.

  On the other hand, in this embodiment, the cooling water that flows in and out through the first inlet 103 and the first outlet 105 flows into the first connection channel 113a inside the space S and flows in through the second inlet 131. However, the present invention is not limited to this, and the cooling water and the transmission oil can be changed and applied to each other.

Hereinafter, the operation and action of the can-type heat exchanger 100 according to the embodiment of the present invention configured as described above will be described in detail.
FIG. 8 is a perspective view of the operating state of the can-type heat exchanger according to the embodiment of the present invention.
First, the cooling water flowing in through the first inlet 103 flows into the space S and passes through the outside of the heat radiating unit 110 and the first connection channel 113a as shown in FIG. It is discharged through.

  As a result, the cooling water passes through the first connection channel 113a from the space S, and the transmission oil that flows in through the second inlet 131 and passes through the second connection channel 113b passes through the first connection channel 113a. Heat exchange is performed between the cooling water passing through the flow path 113a and the space S of the housing 101, and the temperature is adjusted.

Here, the transmission oil flows from the automatic transmission 40 through the second inlet 131 and passes through the second connection flow path 113b of the heat dissipation unit 110 in the space S, and then is discharged through the second discharge port 133. Heat exchange with cooling water takes place.
In this case, the cooling water and the transmission oil are formed such that the first and second inflow ports 103 and 131 are formed in directions intersecting each other on the side surface of the housing 101 and one surface of the cover cap 130. The flow direction is made to be an opposite flow to exchange heat with each other, whereby more efficient heat exchange is performed.

As a result, the transmission oil that needs to be cooled and is generated by heat generated by fluid friction within the automatic transmission 40 is cooled by the heat dissipation unit 110 of the can-type heat exchanger 100 by mutual heat exchange with the cooling water. In this state, the automatic transmission 40 is supplied.
That is, the heat exchanger 100 prevents the automatic transmission 40 from slipping by supplying the cooled transmission oil to the automatic transmission 40 that rotates at a high speed.

As described above, the can-type heat exchanger 100 according to the embodiment of the present invention exchanges heat between the coolant flowing in through the first inflow port 103 and the second inflow port 131 and the transmission oil, thereby transmitting the transmission oil. Adjust the temperature.
Meanwhile, a configuration of a can-type heat exchanger 200 according to another embodiment of the present invention will be described with reference to the attached FIG.

FIG. 10 is a perspective view of a can-type heat exchanger according to another embodiment of the present invention.
As shown in FIG. 10, a can-type heat exchanger 200 according to another embodiment of the present invention includes a housing 201, a heat radiating unit 210, and a cover cap 230.
Here, the housing 201 includes a first inlet 203 and a first outlet 205, and the cover cap 230 includes a second inlet 231 and a second outlet 233.

The cover cap 230 includes the coupling portion 235, which is the same as that of the above-described embodiment, and thus detailed description thereof is omitted below.
In the can-type heat exchanger 200 according to another embodiment of the present invention configured as described above, the cover cap 230 is mounted with the mounting plate 250 on the other surface, and the mounting portion 251 is integrated with the outer peripheral surface of the mounting plate 250. Can be formed.

Accordingly, the can-type heat exchanger 200 according to another embodiment of the present invention can be directly mounted on one side of the automatic transmission 40 through the mounting plate 250.
That is, the can-type heat exchanger 200 according to another embodiment of the present invention is mounted on one side of the automatic transmission 40 through the mounting portion 251 of the mounting plate 250 mounted on the cover cap 230, thereby transmitting the transmission. Pipes for oil supply and discharge can be removed.

Therefore, when the can-type heat exchangers 100 and 200 according to the embodiment of the present invention configured as described above are applied, when each working fluid exchanges heat while flowing inside, the heat exchange efficiency is increased. In addition, the layout can be simplified inside a narrow engine room by forming the can shape that can reduce the weight and size.
In addition, it is easy to secure a mounting space inside the engine room, and the mountability and packageability can be improved.

Further, by combining the cover caps 130 and 230, to which the heat radiation units 110 and 210 are integrally attached, with the housings 101 and 201 manufactured by injection molding, the manufacturing and assembly operations are facilitated. Production costs can be reduced and productivity can be improved.
At the same time, since the presence or absence of defects in the heat radiation units 110 and 210 can be confirmed before the cover caps 130 and 230 are assembled, it is possible to prevent the occurrence of defects in the finished product and improve the merchantability.

  As mentioned above, even if the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technology of the present invention can be achieved by persons having ordinary knowledge in the technical field to which the present invention belongs. It goes without saying that various modifications and variations are possible within the scope of the idea and the scope of claims.

DESCRIPTION OF SYMBOLS 100 Can type | mold heat exchanger 101 Housing 103 1st inflow port 105 1st discharge port 107 Mounting part 110 Radiation unit 111 Plate 113 Connection flow path 113a 1st connection flow path 113b 2nd connection flow path 115 1st connection hole 117 2nd Connecting hole 118 Protrusion 119 Distributing protrusion 121 First fixed plate 123 First through hole 125 Second through hole 127 Second fixed plate 130 Cover cap 131 Second inflow port 133 Second discharge port 135 Coupling portion 140 Sealing

Claims (18)

A can-shaped heat exchanger,
A housing in which one surface is opened, the other surface is closed to form a space therein, and a first inflow port and a first discharge port communicated with the space are formed on the side surface;
Inserted into the space, a plurality of plates are laminated to form a connection channel alternately and alternately, and any one of the connection channels is connected to the space, and A heat dissipating unit in which different working fluids exchange heat with each other while passing through each of the connection channels;
The heat radiating unit is integrally mounted on one surface corresponding to the space, and a second inflow port and a second discharge port connected to another one of the connection channels are formed, and the housing A cover cap to be attached to one side of the opening,
A can-type heat exchanger comprising:   2. The can-type heat exchanger according to claim 1, wherein the cover cap includes a coupling portion formed by being integrally bent toward the housing on an outer peripheral surface.   3. The can type heat exchanger according to claim 2, wherein the coupling portion is clinched and joined around the outer peripheral surface in a state of surrounding the outer peripheral surface of the housing.   The can-type heat exchanger according to claim 1, wherein a sealing is interposed between the housing and the cover cap.   The can-type heat exchanger according to claim 1, wherein the first inflow port and the first discharge port are formed at positions spaced apart from each other on a side surface of the housing.   2. The can-type heat exchanger according to claim 1, wherein the second inlet and the second outlet are formed at positions separated from each other on one surface of the cover cap.   The can-type heat according to claim 1, wherein the first inlet and the first outlet are formed at positions intersecting with the second inlet and the second outlet, respectively. Exchanger.   The can-type heat exchanger according to claim 1, wherein the housing is formed in a cylindrical shape, but is formed by injection molding.   The can-type heat exchanger according to claim 1, wherein the housing is made of a plastic material.   The plate is formed in a disc shape, and a first connection hole and a second connection hole are formed corresponding to the second inflow port and the second discharge port, respectively. The can-type heat exchanger described in 1. The heat dissipation unit is
A first fixing plate mounted on one surface of the heat radiating unit fixed to the cover cap and having first and second through holes formed corresponding to the first and second connection holes;
The can-type heat exchanger according to claim 10, further comprising a second fixed plate mounted on the other surface of the heat radiating unit on the side inserted into the space.   In the plate, a plurality of protrusions are formed to protrude at a set interval, and a distribution protrusion is formed from the center to the outer peripheral surface correspondingly between the first inflow port and the first discharge port. The can-type heat exchanger according to claim 1, wherein the can-type heat exchanger is characterized.   The can-type heat exchanger according to claim 12, wherein the protrusion is formed in a hemispherical shape and is formed to protrude in the same direction as the distribution protrusion on one surface of the plate. Each working fluid is
The can-type heat exchanger according to claim 1, comprising cooling water flowing from a radiator and transmission oil flowing from an automatic transmission. The cooling water circulates through the first inlet and the first outlet, and the transmission oil circulates through the second inlet and the second outlet to the heat dissipation unit,
15. Each of the connection channels includes a first connection channel in which cooling water flows and moves, and a second connection channel in which transmission oil flows and moves. The can-type heat exchanger described.   The can-type heat exchanger according to claim 1, wherein at least one mounting portion is integrally formed around the other surface of the housing.   The can-type heat exchanger according to claim 1, wherein the cover cap is formed of a metal material, and the heat dissipation unit is integrally coupled by brazing welding.   The can-type heat exchanger according to claim 1, wherein a mounting plate is mounted on the other surface of the cover cap, and a mounting portion is integrally formed on the outer peripheral surface of the mounting plate.

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