KR101680467B1 - core assembly for heat exchanger and manufacturing method thereof - Google Patents

core assembly for heat exchanger and manufacturing method thereof Download PDF

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Publication number
KR101680467B1
KR101680467B1 KR1020150071911A KR20150071911A KR101680467B1 KR 101680467 B1 KR101680467 B1 KR 101680467B1 KR 1020150071911 A KR1020150071911 A KR 1020150071911A KR 20150071911 A KR20150071911 A KR 20150071911A KR 101680467 B1 KR101680467 B1 KR 101680467B1
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KR
South Korea
Prior art keywords
tube bar
heating medium
groove
binding
core assembly
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KR1020150071911A
Other languages
Korean (ko)
Inventor
박승욱
Original Assignee
(주)해송엔지니어링
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Priority to KR1020150071911A priority Critical patent/KR101680467B1/en
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Publication of KR101680467B1 publication Critical patent/KR101680467B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10—Arrangements for sealing the margins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F28F9/14—Arrangements for sealing elements into header boxes or end plates by dismountable joints by force-joining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/10—Fastening; Joining by force joining

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a core assembly constituting a heat exchanger for cooling a fluid such as cooling water or oil, and more particularly to a core assembly having a bending section at an outer end of a lower and an upper plate, Since the alignment position of the pin and the tube bar is divided through the seating groove and the bending portion, the assembling property is improved, the dimensional stability is enhanced, and the inclined portion of the mounting groove is joined at the inclined surface of the tube bar, Since the coupling pieces provided on the lower and upper plates are bent into the coupling groove provided at the outer end of the tube bar and joined together like one module, the core assembly for the heat exchanger, And a manufacturing method thereof.

Description

Technical Field The present invention relates to a core assembly for a heat exchanger,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a core assembly constituting a heat exchanger for cooling a fluid such as cooling water or oil, and more particularly to a core assembly having a bending section at an outer end of a lower and an upper plate, Since the alignment position of the pin and the tube bar is divided through the seating groove and the bending portion, the assembling property is improved, the dimensional stability is enhanced, and the inclined portion of the mounting groove is joined at the inclined surface of the tube bar, Since the coupling pieces provided on the lower and upper plates are bent into the coupling groove provided at the outer end of the tube bar and joined together like one module, the core assembly for the heat exchanger, And a manufacturing method thereof.

Generally, in driving an engine such as a ship or an automobile, the temperature of the combustion gas in the combustion chamber reaches 2,000 DEG C or more, and a considerable amount of this temperature is conducted to the cylinder, the cylinder head, the piston, and the valve.

If the temperature of such a portion becomes excessively high, the strength of the component material is lowered, resulting in failure, shortening the life span, and deteriorating the combustion state, resulting in knocking or early ignition.

Further, in the state where the cooling is incomplete, the lubricating function such as the breakage of the oil film on the cylinder wall may be deteriorated and the cooling water may be deteriorated, resulting in abnormal wear, pressing, or the like. On the contrary, if the engine is over cooled, the amount of heat lost due to cooling is large among the heat generated from the combustion, so that the thermal efficiency of the engine is lowered and the fuel consumption is increased. In this way, the cooling water (heating medium) that has passed through the engine and is heated must be cooled to a proper level through a heat exchanger. As with cooling water, engine oil and mission oil are essentially used to drive the engine. Oil (heat medium) lubricates mechanical parts such as engine cylinders and crankshafts to reduce friction and disturbances, It should be cooled through a machine.

7A is an enlarged view of part A of FIG. 7A. Referring to FIG. 7A, the heat exchanger includes an upper tank 10 having an inlet 15 through which a heating medium such as oil flows, A lower tank 20 having an outlet 25 formed therein and a core assembly 30 for cooling the oil introduced from the upper tank 10 with external air.

The core assembly is formed by first assembling the respective components of the core assembly and completing the assembly through brazing, joining the upper and lower tanks to the core assembly, and joining pipes for supplying and discharging cooling water to the upper and lower tanks ≪ / RTI >

The core assembly 30 includes an air portion 40 including a plurality of air units 41 including an air pin 42 and a head bar 43 disposed above and below the air pin 42, (Not shown) disposed on the right and left sides of the heat exchanger 41, and the air unit and the heat medium unit are arranged alternately with respect to the plate.

The heating medium unit is composed of a pin inserted between the lower and upper plates, and a tube disposed at both ends of the fin. The plate and the tube bar are alternately laminated, so that brazing is performed on the upper and lower surfaces of the tube bar.

However, there is a problem in that the assembling process is complicated because the position where the plate and the pin and the tube bar are placed are not partitioned, and when they are not placed at the time of stacking or when the position is changed during assembly, defects occur. In addition, since the joining is performed only on the top and bottom surfaces of the tube bar, development of a core assembly having a structure capable of improving oil tightness, bonding strength and pressure resistance can be obtained when joining is not completed in some parts It is necessary.

1. Korean Patent No. 10-1417218 2. Korean Patent Publication No. 10-2013-0117421 3. Korean Patent No. 10-1374925

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a bending part at the outer end of lower and upper plates, To provide a core assembly for a heat exchanger and a manufacturing method thereof.

Further, the object of the present invention is to provide an apparatus and a method for assembling the tube and the tube, wherein the alignment position of the fin and the tube bar is divided through the seating groove and the bending portion to improve the assemblability and the dimensional stability, And an airtightness at the interface is improved to prevent the heat medium from leaking, and a method for manufacturing the core assembly.

It is another object of the present invention to provide a method and a device for assembling a tube bundle in which a bundle bundle provided in lower and upper plates is bent into a bundling groove provided at an outer end of a tube bar and assembled like a single module, To provide a core assembly for a heat exchanger and a manufacturing method thereof.

To this end, the core assembly for a heat exchanger according to the present invention includes a heating medium unit through which a heating medium flows, and an air unit through which air exchanges heat with the heating medium, wherein the heating medium unit includes a lower plate; An upper plate disposed on an upper side of the lower plate; A first space portion provided between the lower and upper plates; A pair of tube bars arranged at one end and the other end of the first space and each having a coupling groove at an outer end thereof; And a pin disposed between the tube bars. At each end of the lower and upper plates, lower and upper bending portions are provided to surround a part of an outer end of the tube bar, and at one side of the lower bending portion, A plurality of upper binding pieces bent at the binding groove are provided at one side of the upper bending portion and the lower and upper binding pieces are bent in the binding groove alternately in the binding groove, So that they are bonded together in a bonded state.

Further, the binding groove of the core assembly for a heat exchanger according to the present invention is formed in a rectangular shape, and the binding piece is in surface contact with the binding groove.

In addition, the lower and upper plates of the core assembly for a heat exchanger according to the present invention are respectively formed with a seating groove recessed upwardly and downwardly along a boundary between the tube bar and the pin, and a pin splice is formed inside the seating groove And the tube bar joint portion and the bending portion bent at the tube bar joint portion are provided on the outer side.

In addition, the inner end of the tube bar of the tube bar of the core assembly for a heat exchanger according to the present invention is formed of a triangular sloped surface, and one side of the seating groove is provided with a sloped portion which is in surface contact with the sloped surface of the tube- .

The method for manufacturing a core assembly for a heat exchanger according to the present invention is a method for manufacturing a core assembly for a heat exchanger having a structure in which a heating medium unit through which a heating medium flows and an air unit through which air exchanges heat with the heating medium are alternately laminated, A pair of lower and upper bending parts are formed by bending both ends of the bending part to form lower and upper binding pieces respectively extending from one side of each bending part and a pair of seating grooves formed in parallel with the bending part inside each bending part ; A step of laminating a tube bar between the lower bending portion of the lower plate and the seating groove, and stacking the pins between the pair of seating grooves, wherein a binding groove is formed at an outer end of the tube bar; A step S3 of laminating the upper plate so that the tube bar is disposed between the upper bending portion and the seating groove of the upper plate and bending the binding pieces into the binding groove to modularize the heating medium unit; A step S4 of laminating an air pin on the modularized heating medium unit and a pair of head bars disposed at both ends of the air fin; A step S5 of laminating a modular heating medium unit on the air pin and the head bar; (S6) of bonding the core assembly formed by repeating the steps S1 to S5.

Further, in the method of manufacturing a core assembly for a heat exchanger according to the present invention, the outer end of the tube bar is composed of a lower and an upper inclined surface, and the binding piece is joined to the lower and upper inclined surfaces of the tube bar do.

Further, in the method of manufacturing a core assembly for a heat exchanger according to the present invention, a cladding layer is formed on at least the tube bar, the lower and upper plates, and is joined by a brazing method.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a core assembly for a heat exchanger and a method of manufacturing the same, in which a bending portion is provided at an outer end of a lower and an upper plate, The strength and the pressure resistance can be improved.

In addition, the core assembly for a heat exchanger and the method of manufacturing the same according to the present invention can improve the assemblability and the dimensional stability because the alignment positions of the fin and the tube bar are divided through the seating groove and the bending portion, Since the joining is carried out at the inclined surface of the bar, the airtightness at the interface is improved and the heating medium such as oil or water can be more reliably prevented from being counted.

It is another object of the present invention to provide a method and a device for assembling a tube bundle in which a bundle bundle provided in lower and upper plates is bent into a bundling groove provided at an outer end of a tube bar and assembled like a single module, It is effective.

FIG. 1 is a perspective view showing a heat exchanger equipped with a core assembly according to the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a plan view showing a laminated structure of an air unit and a heating medium unit.
FIG. 4 is a perspective view showing the heating medium unit according to the present invention, FIG. 5 is a plan view of FIG. 4, FIGS. 6A and 6B are views showing a state where the lower and upper binding pieces of the present invention are joined to a tube bar, Fig.
FIG. 7A is a perspective view showing a conventional heat exchanger, and FIG. 7B is an enlarged view of a portion A in FIG. 7A.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention of the user, the operator, or the precedent. Therefore, the definition should be based on the contents throughout this specification.

FIG. 1 is a perspective view showing a heat exchanger equipped with a core assembly according to the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a plan view showing a laminated structure of an air unit and a heating medium unit.

1 to 3, the core assembly according to the present invention is used in a heat exchanger for cooling a heating medium with air as a refrigerant. The core assembly includes an upper tank 110, a lower tank (not shown) 120).

The heating medium may be oil or water.

The high-temperature oil circulating around the engine, etc. of the vehicle flows into the upper tank 110, and a heating medium inlet 111 is formed. The core assembly 130 is moved to the lower tank 120 side through the oil introduced through the upper tank 110. In this process, the oil is cooled by the outside air. As described above, the oil that is cooled while passing through the core assembly 130 flows out to the lower tank 120 through the oil pump (not shown). For this purpose, the heating medium outlet 121 is formed.

The core assembly 130 includes a plurality of plates 161 and 161a and a plurality of first and second space portions 140 and 150 alternately arranged by the plates 161 and 161a, And a core guard 133 disposed on both sides of the core assembly 130. The air unit 151 is installed in the first space 150, have.

The heating medium unit 160 is configured such that the oil introduced through the upper tank 110 flows downward in the vertical direction through the plurality of first space portions 140 and is cooled by the air passing through the air unit 151 will be.

The air unit 151 includes an air pin 152 installed in the second space 150 and formed with a metal thin plate in a corrugated shape, And a pair of head bars 153 arranged in the direction of the arrows.

FIG. 4 is a perspective view showing the heating medium unit according to the present invention, FIG. 5 is a plan view of FIG. 4, FIGS. 6A and 6B are views showing a state where the lower and upper binding pieces of the present invention are joined to a tube bar, Fig.

4 and 6B, the heating medium unit 160 according to the present invention includes a lower plate 161, an upper plate 161a spaced from the upper side of the lower plate 161, A first space part 140 provided between the plates 161 and 161a and a pair of second space parts 140a and 140b disposed at one end and the other end of the first space part 140 to seal both side ends of the first space part 140 And a fin 180 disposed between the tube bar 190 and the tube bar 190 and configured to allow the oil to pass therethrough in thermal contact therewith.

At each end of the lower and upper plates 161 and 161a, lower and upper bending parts 163a and 163b are provided to cover a part of the lower and upper inclined surfaces 191, respectively.

The lower and upper bending portions 163a and 163b are bent so as to correspond to the upper and lower inclined surfaces 191 and are in surface contact with the upper and lower inclined surfaces 191, Thereby improving the bonding strength and the pressure resistance.

In addition, in the present invention, a binding groove 197 is provided at an outer end of the tube bar so as to modularize the heat exchanging unit 160, and the lower and upper plates 161, (164a, 164b) are provided.

Specifically, the binding groove 197 may have a rectangular shape.

The lower and upper binding pieces 164a and 164b are respectively extended from the lower and upper bending portions 163a and 163b and bent into the binding groove 197 to be in surface contact with each other.

At least four pairs of the lower and upper binding pieces 164a and 164b are provided in the corner areas of the plates 161 and 161a and are alternately bent and engaged with the coupling groove 197, The upper plates 161 and 161a can be joined together in a state of being joined together.

When the lower and upper plates 161 and 161a are coupled together and assembled into a single module, automation can be facilitated and productivity can be improved.

The lower and upper plates 161 and 161a are formed with seating grooves 165 that are upwardly and downwardly recessed along the boundary between the tube bar 190 and the fins 180, respectively.

The seating groove 165 divides the space for allowing the tube bar 190 to be seated together with the bending portions 163a and 163b to improve the assembling property and widen the bonding surface to increase the bonding strength, the pressure resistance, and the sealing performance do.

A pin connecting portion 167 is provided on the inner side of the mounting groove 165 and a tube bar connecting portion 168 and a bending portion 163a and 163b of the tube bar connecting portion 168 And the tube bar 190 is joined to the seating groove 165, the tube bar joint portion 168, and the bending portions 163a and 163b.

The inclined surface 191 of the tube bar 190 may be formed at one side of the seating groove 165 and the inclined surface 191 of the tube bar 190 may be formed at one side of the seating groove 165. [ It is preferable to provide an inclined portion 166 to be brought into contact with and bonded to the first and the second hollow portions so that the heating medium such as oil or water passing through the first space portion can surely be prevented from leaking through the interface between the plate and the tube bar.

Hereinafter, preferred embodiments of a method of manufacturing a core assembly for a heat exchanger according to the present invention will be described in detail.

The method for manufacturing a core assembly for a heat exchanger according to the present invention is characterized in that lower and upper plates 161 and 161a are provided and both ends of each plate 161 and 161a are bent to form a pair of lower and upper bending portions 163a and 163b And the lower and upper binding pieces 164a and 164b extending from one side of each of the bending portions 163a and 163b are formed and the bending portions 163a and 163b and the bending portions 163a and 163b are formed inside each of the bending portions 163a and 163b. A step S1 of forming a pair of seating grooves 165 parallel to each other and a tube bar 190 between the lower bending portion 163a and the seating groove 165 of the lower plate 161, A step S2 in which a pin 180 is stacked between the seating grooves 165 and a coupling groove 197 is formed at an outer end of the tube bar 190 and an upper bending portion 163b of the upper plate 161a, The upper plate 161a is laminated such that the tube bar 190 is disposed between the upper and lower plates 162 and 164 and the seating groove 165, A step S3 of modifying the heating medium unit 160 by modifying the heating medium unit 160 into the binding groove 197 and a step of disposing the air pin 180 on both ends of the air pin 180 on the modularized heating medium unit 160 A step S4 of laminating a pair of head bars 153 and a step S5 of laminating a modular heating medium unit 160 on the air pins 180 and the head bars 153 and the steps S1 to S5 And the step S6 of joining the repeated assembled core assemblies.

The bending portions 163a and 163b and the seating groove 165 of the lower and upper plates 161 and 161a may be processed through press working or roll forming in the step S1.

Since the seating groove 165 adjacent to the bending portions 163a and 163b has a width corresponding to the tube bar 190 and the pair of seating grooves 165 has a width corresponding to the pin, The assembling process from step S3 to step S3 is simplified, and dimensional precision is improved, thereby reducing defects.

Particularly, since the heating medium unit 160 is modularized through steps S1 through S3, the assemblability can be further improved, and productivity can be improved through automation.

The seating groove 165, the bending portions 163a and 163b and the binding pieces 164a and 164b are closely attached to the tube bar 190 in the step S6.

As described above, when the inner end of the tube bar 190 is formed of the triangular inclined surface 191, the mounting groove 165 is in surface contact with the inclined surface 191 of the tube bar 190, The inclined portion 166 is provided.

A clad layer (not shown) is formed on at least the tube bar 190, the lower and upper plates 161 and 161a, and the clad layer In this brazing, bonding is performed while being melted by heating.

Consequently, by providing the bending portions at the outer ends of the lower and upper plates, it is possible to widen the bonding area between the tube bars and improve the bonding strength and the pressure resistance.

Further, since the alignment position of the pin and the tube bar is divided through the seating groove and the bending portion, the assembling property is improved, the dimensional stability is improved, and the sealing is performed at the inclined portion of the mounting groove and the inclined surface of the tube bar. Can be improved to more reliably prevent leakage of heat medium such as oil or water.

Further, since the lower and upper plates and the tube bar are coupled together like a single module by a binding piece, workability can be improved and productivity can be improved through automation.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. Accordingly, the scope of the present invention should be construed as being limited to the embodiments described, and it is intended that the scope of the present invention encompasses not only the following claims, but also equivalents thereto.

100: Heat exchanger 110: Upper tank
111: Heating medium inlet port 120: Lower tank
121: heating medium outlet 130: core assembly
133: core guard 140: first space part
150: second space part 151: air unit
152: Air pin 153: Head bar
154: head bar body 155: heat transfer part
160: heating medium unit 161, 161a: plate
163a, 163b: bending portions 164a, 164b:
165: seat groove 166:
167: pin joint 168: tube bar joint
180: pin 190: tube bar
191: slopes 192, 193: lower and upper slopes
197: Coupling groove

Claims (7)

A core assembly comprising a heating medium unit through which a heating medium flows and an air unit through which air exchanges heat with the heating medium,
Wherein the heating medium unit includes:
A lower plate; An upper plate disposed on an upper side of the lower plate; A first space portion provided between the lower and upper plates; A pair of tube bars arranged at one end and the other end of the first space and each having a coupling groove at an outer end thereof; And a pin disposed between the tube bars,
And lower and upper bending portions are provided at each end of the lower and upper plates so as to surround a part of the outer end of the tube bar,
A plurality of lower binding pieces bent at the binding groove are provided at one side of the lower bending portion,
A plurality of upper binding pieces bent at the binding groove are provided at one side of the upper bending portion,
Wherein the binding groove has a vertical width that allows the lower or upper binding piece to be bent and inserted,
Wherein the lower and upper plates are joined in a state where the lower and upper binding pieces are alternately bent into the binding groove and joined together,
Wherein the upper and lower plates are provided with a seating groove recessed upwardly and downwardly along a boundary between the tube bar and the pin, a pin joint is provided on the inner side with respect to the seating groove, a tube bar joint is formed on the outer side, The lower and upper bending portions bent at the tube bar joint portion are provided,
Wherein the tube bar is joined to the space partitioned by the seating groove, the tube bar junction, the lower and upper bending portions, thereby improving the assembling property, bonding strength and airtightness of the heat medium unit. .
The method according to claim 1,
Wherein the binding groove has a rectangular shape,
Wherein the lower and upper binding pieces are in surface contact with the binding groove.
delete The method according to claim 1,
Wherein an inner end of the tube bar is formed of a triangular inclined surface,
And a sloped portion is provided on one side of the seating groove so as to be in surface contact with an inclined surface of the inner side end of the tube bar. A method of manufacturing a core assembly for a heat exchanger having a structure in which a heating medium unit through which a heating medium flows and an air unit through which air exchanges heat with the heating medium flow are alternately stacked,
A lower and an upper plate are provided and both ends of each plate are bent to form a pair of lower and upper bending portions and lower and upper binding pieces each extending from one side of each bending portion are formed, And forming a pair of seating grooves arranged in parallel with the upper bending portion;
A step of laminating a tube bar between the lower bending portion of the lower plate and the seating groove, and stacking the pins between the pair of seating grooves, wherein a binding groove is formed at an outer end of the tube bar;
A step S3 of laminating the upper plate so that the tube bar is disposed between the upper bending portion and the seating groove of the upper plate and bending the binding pieces into the binding groove to modularize the heating medium unit;
A step S4 of laminating an air pin on the modularized heating medium unit and a pair of head bars disposed at both ends of the air fin;
A step S5 of laminating a modular heating medium unit on the air pin and the head bar;
(S6) of joining the core assembly formed by repeating steps S1 through S5,
Wherein the coupling groove has a width that allows the lower or upper coupling piece to be bent and inserted therein.
delete 6. The method of claim 5,
Wherein a cladding layer is formed on at least the tube bar, the lower and upper plates, and is joined by a brazing method.
KR1020150071911A 2015-05-22 2015-05-22 core assembly for heat exchanger and manufacturing method thereof KR101680467B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101168574B1 (en) 2012-01-16 2012-07-25 정덕화 An element for engine oil cooler
KR101214869B1 (en) 2012-10-25 2012-12-24 정덕화 An element for engine oil cooler
JP2014214897A (en) * 2013-04-23 2014-11-17 昭和電工株式会社 Heat exchanger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101168574B1 (en) 2012-01-16 2012-07-25 정덕화 An element for engine oil cooler
KR101214869B1 (en) 2012-10-25 2012-12-24 정덕화 An element for engine oil cooler
JP2014214897A (en) * 2013-04-23 2014-11-17 昭和電工株式会社 Heat exchanger

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