WO2004018954A1 - Connecting heat-radiating fins and tubes for radiator - Google Patents

Connecting heat-radiating fins and tubes for radiator Download PDF

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Publication number
WO2004018954A1
WO2004018954A1 PCT/KR2003/001662 KR0301662W WO2004018954A1 WO 2004018954 A1 WO2004018954 A1 WO 2004018954A1 KR 0301662 W KR0301662 W KR 0301662W WO 2004018954 A1 WO2004018954 A1 WO 2004018954A1
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WO
WIPO (PCT)
Prior art keywords
tubes
tube
heat
radiating fins
radiator
Prior art date
Application number
PCT/KR2003/001662
Other languages
French (fr)
Inventor
Hae Hwan Lee
Original Assignee
Hae Hwan Lee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hae Hwan Lee filed Critical Hae Hwan Lee
Priority to AU2003251205A priority Critical patent/AU2003251205A1/en
Publication of WO2004018954A1 publication Critical patent/WO2004018954A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • 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
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/125—Fastening; Joining by methods involving deformation of the elements by bringing elements together and expanding

Definitions

  • the present invention relates to a radiator for radiating heat, and more particularly to a method for connecting heat-radiating fins and tubes for a radiator by a simple procedure, thus shortening a working time taken to connect the heat-radiating fins and the tubes, improving the productivity of a radiator manufacturing process, allowing the radiator to be mass-produced, and reducing the production cost of the radiator.
  • radiators are installed in a heater/cooler so as to radiate heat.
  • a plurality of heat-radiating fins and a plurality of tubes are disposed within such a radiator, so that the heat-radiating pins and the tubes are integrally connected to each other in order to radiate heat.
  • the heat-radiating fins and the tubes of the conventional radiator are conventionally connected to each other by a welding method.
  • a welding method causes defects in the connections between the heat-radiating fins and the tubes, and lengthens the working time taken to connect the heat-radiating fins and the tubes.
  • a plurality of tube holes having a diameter smaller than the outer diameter of the tube are formed through each of the heat- radiating fins.
  • the tubes are respectively inserted into the tube holes using a tight-fitting and push-insertion manner.
  • this tight and push fit manner also causes defects in the contact between the tube hole and the tube, thus reducing the thermal conductivity and lowering a radiating effect.
  • connection method for connecting the heat-radiating fins and the tubes by expanding the inner diameters of the tubes, under the condition in which the tubes are inserted into the heat- radiating fins.
  • the above recent connection method requires a step of expanding the inner diameters of the tubes one by one, thus causing problems such as the increase in the working time taken to connect the heat-radiating fins and the tubes and the deterioration of the productivity of a radiator manufacturing process.
  • this connection method does not allow the mass production of the radiator, thereby increasing the production cost of the radiator.
  • the plural tube holes provided with a flange are formed through the heat-radiating fins so that the tube holes are spaced from each other by a constant distance, and the tubes having a circular cross-section are respectively inserted into the correspondent one of the tube holes of the heat-radiating fins.
  • the inner diameter of the tube hole is slightly larger than the outer diameter of the tube.
  • the tube of the conventional radiator has a circular cross-section, thus increasing the air resistance.
  • the rear side of the tube does not directly contact the air, such a tube with the circular cross- section does not easily circulates air and has a small contact area with the air, thereby reducing the radiating effect and the thermal conductivity.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for connecting heat- radiating fins and tubes for a radiator by a simple procedure, thus shortening a working time taken to connect the heat-radiating fins and the tubes, improving the productivity of a radiator manufacturing process, allowing the radiator to be mass-produced, and reducing the production cost of the radiator.
  • a method for connecting heat-radiating fins and tubes for a radiator comprising the steps of: (a) vertically arranging a plurality of heat-radiating fins, through which plural tube holes with an inner diameter slightly larger than the outer diameter of a tube are formed at a predetermined distance; (b) inserting the tubes into the corresponding one of the tube holes of the vertically- arranged heat-radiating fins; (c) inserting tube expanding tips into an end of the corresponding one of the tubes; and (d) expanding the inner diameters of the tubes by simultaneously pulling down the tube expanding tips from the other end of the corresponding one of the tubes so that the tubes stick to the inner wall of the corresponding one of the tube holes.
  • Figs. la to Id are longitudinal-sectional views illustrating respective steps of a method for connecting heat-radiating fins and tubes for a radiator in accordance with the present invention
  • Fig. 2 is a cross-sectional view of one embodiment of the tube in accordance with the present invention
  • Fig. 3 is a cross-sectional view of another embodiment of the tube in accordance with the present invention.
  • a method for connecting heat-radiating fins 20 and tubes 10 for a radiator comprises the steps of (a) vertically arranging a plurality of the heat-radiating fins 20, through which plural tube holes 21 with an inner diameter slightly larger than the outer diameter of the tube 10 are formed at a predetermined distance; (b) inserting the tubes 10 into the corresponding one of the tube holes 21 of the vertically-arranged heat-radiating fins 20; (c) inserting tube expanding tips 30 into an end of the corresponding one of the tubes 10; and (d) expanding the inner diameters of the tubes 10 by simultaneously pulling down the tube expanding tips 30 from the other end of the corresponding one of the tubes 10 so that the tubes 10 stick to the inner wall of the corresponding one of the tube holes 21.
  • the tube holes 21 provided with a flange are formed through each of the heat-radiating fins 10 so that the tube holes 21 are spaced from each other by a constant distance, and a plurality of the tube expanding tips 30 are connected to a tube expander.
  • Fig. 2 is a cross-sectional view of one embodiment of the tube 10 in accordance with the present invention. As shown in Fig. 2, the tube 10 has an oval cross-section.
  • Fig. 3 is a cross-sectional view of another embodiment of the tube 10 in accordance with the present invention. As shown in Fig. 3, the tube has an egg-shaped cross-section with different outer diameters at both ends.
  • the heat-radiating fins 20 are vertically arranged. As shown in Fig. la, a plurality of the heat-radiating fins 20, through which plural tube holes 21 with an inner diameter slightly larger than the outer diameter of the tube 10 are formed at a predetermined distance, are vertically arranged so that the tube holes 21 of the heat-radiating fins 20 coincide with each other.
  • the tubes 10 Since the tube holes 21 of the heat-radiating fins 20 coincide with each other in the first step, the tubes 10 will be easily inserted into the corresponding tube holes 21 of the heat radiating fins 20.
  • the tubes 10 are inserted into the corresponding tube holes 21 of the vertically-arranged heat-radiating fins 20. As shown in Fig. lb, the tubes 10 are respectively inserted into the tube holes 21 of the vertically-arranged heat-radiating fins 20.
  • the tubes 10 Since the tubes 10 are respectively inserted into the tube holes 21 of the vertically-arranged heat- radiating fins 20 in the second step, the tubes 10 will be simultaneously expanded by a single tube-expanding procedure.
  • the tube expanding tips 30 are inserted into an end of the corresponding one of the tubes 10. As shown in Fig. lc, the tube expanding tips 30 are respectively inserted into the tubes 10, which are inserted into the tube holes 21. Since the tube expanding tips 30 are respectively inserted into the tubes 10 in the third step, the tube expanding tips 30 will be simultaneously pulled down from the tubes 10 by means of the tube expander.
  • the tube expanding tips 30 are simultaneously pulled down from the other end of the corresponding one of the tubes 10, thus expanding the inner diameters of the tubes 10.
  • the tube expanding tips 30 are simultaneously pulled down from the other end of the corresponding one of the tubes 10 in the direction of the arrow, thus expanding the inner diameters of the tubes 10 so that the tubes 10 stick to the inner diameter of the corresponding one of the tube holes 21.
  • the tubes 10 are firmly integrated with the inner walls of the tube holes 21 of the heat-radiating fins 20, respectively.
  • the tubes 10 inserted into the tube holes 21 are simultaneously expanded by a single procedure so that the tubes 10 are firmly integrated with the inner walls of the tube holes 21 of the heat-radiating fins 20. Accordingly, the method of the present invention is advantageous in that it shortens a working time taken to connect the heat-radiating fins and the tubes, improves the productivity of a radiator manufacturing process, allows the radiator to be mass-produced, and reduces the production cost of the radiator.
  • the tubes 10 do not have a circular cross-section, but have an oval or egg-shaped cross-section. Accordingly, the air resistance generated when air passes through the tubes 10 is reduced, thus allowing air to smoothly pass through the tubes 10. Further, the contact area of the tubes 10 with the air is increased, thus allowing heat exchange with the air to be easily achieved and improving the heat exchanging efficiency and heat radiating effect of the radiator.
  • the present invention provides a method for connecting heat-radiating fins and tubes for a radiator by a simple procedure, in which the tubes inserted into tube holes of the heat- radiating fins are simultaneously expanded by a single tube-expanding procedure, thus shortening a working time taken to connect the heat-radiating fins and the tubes, improving the productivity of a radiator manufacturing process, allowing the radiator to be mass-produced, and reducing the production cost of the radiator.
  • the tubes have an oval or egg-shaped cross-section, thus allowing air to smoothly pass through the tubes, increasing the contact area of the tubes with air, and improving the heat exchanging efficiency and heat radiating effect of the radiator.

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

Abstract

Disclosed is a method for connecting heat-radiating fins and tubes for a radiator by a simple procedure, thus shortening a working time taken to connect the heat-radiating fins and the tubes, improving the productivity of a radiator manufacturing process, allowing the radiator to be mass-produced, and reducing the production cost of the radiator. The method comprises the steps of (a) vertically arranging plural heat-radiating fins (20) provided with plural tube holes (21) with an inner diameter slightly larger than the outer diameter of the tube (10); (b) inserting the tubes (10) into the tube holes (21); (c) inserting tube expanding tips (30) into ends of the tubes (10); and (d) expanding the inner diameters of the tubes (10);and (d) expanding the inner diameters of the tubes (10) by simultaneously pulling down the tube expanding tips (30) from the other ends of the tubes (10) so that the tubes (10) stick to the inner walls of the tube holes (21).

Description

CONNECTING HEAT-RADIATING FINS AND TUBES FOR RADIATOR
BACKGROUND OF THE INVENTION
Technical Field
The present invention relates to a radiator for radiating heat, and more particularly to a method for connecting heat-radiating fins and tubes for a radiator by a simple procedure, thus shortening a working time taken to connect the heat-radiating fins and the tubes, improving the productivity of a radiator manufacturing process, allowing the radiator to be mass-produced, and reducing the production cost of the radiator.
Description of the prior Art:
Generally, radiators are installed in a heater/cooler so as to radiate heat. A plurality of heat-radiating fins and a plurality of tubes are disposed within such a radiator, so that the heat-radiating pins and the tubes are integrally connected to each other in order to radiate heat.
The heat-radiating fins and the tubes of the conventional radiator are conventionally connected to each other by a welding method. Such a welding method causes defects in the connections between the heat-radiating fins and the tubes, and lengthens the working time taken to connect the heat-radiating fins and the tubes. In order to solve the above problems, a plurality of tube holes having a diameter smaller than the outer diameter of the tube are formed through each of the heat- radiating fins. The tubes are respectively inserted into the tube holes using a tight-fitting and push-insertion manner. However, this tight and push fit manner also causes defects in the contact between the tube hole and the tube, thus reducing the thermal conductivity and lowering a radiating effect.
Accordingly, there are proposed a method for connecting the heat-radiating fins and the tubes by expanding the inner diameters of the tubes, under the condition in which the tubes are inserted into the heat- radiating fins. The above recent connection method requires a step of expanding the inner diameters of the tubes one by one, thus causing problems such as the increase in the working time taken to connect the heat-radiating fins and the tubes and the deterioration of the productivity of a radiator manufacturing process. Particularly, this connection method does not allow the mass production of the radiator, thereby increasing the production cost of the radiator. Here, the plural tube holes provided with a flange are formed through the heat-radiating fins so that the tube holes are spaced from each other by a constant distance, and the tubes having a circular cross-section are respectively inserted into the correspondent one of the tube holes of the heat-radiating fins. The inner diameter of the tube hole is slightly larger than the outer diameter of the tube. The tube of the conventional radiator has a circular cross-section, thus increasing the air resistance. Moreover, since the rear side of the tube does not directly contact the air, such a tube with the circular cross- section does not easily circulates air and has a small contact area with the air, thereby reducing the radiating effect and the thermal conductivity.
Summary of the Invention
Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for connecting heat- radiating fins and tubes for a radiator by a simple procedure, thus shortening a working time taken to connect the heat-radiating fins and the tubes, improving the productivity of a radiator manufacturing process, allowing the radiator to be mass-produced, and reducing the production cost of the radiator.
It is another object of the present invention to provide a method for connecting heat-radiating fins and tubes for a radiator, in which the connection between the heat-radiating fins and the tubes is easily achieved and the radiating effect and the thermal conductivity of the radiator are improved. In accordance with the present invention, the above and other objects can be accomplished by the provision of a method for connecting heat-radiating fins and tubes for a radiator, comprising the steps of: (a) vertically arranging a plurality of heat-radiating fins, through which plural tube holes with an inner diameter slightly larger than the outer diameter of a tube are formed at a predetermined distance; (b) inserting the tubes into the corresponding one of the tube holes of the vertically- arranged heat-radiating fins; (c) inserting tube expanding tips into an end of the corresponding one of the tubes; and (d) expanding the inner diameters of the tubes by simultaneously pulling down the tube expanding tips from the other end of the corresponding one of the tubes so that the tubes stick to the inner wall of the corresponding one of the tube holes.
Brief Description of the Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
Figs. la to Id are longitudinal-sectional views illustrating respective steps of a method for connecting heat-radiating fins and tubes for a radiator in accordance with the present invention;
Fig. 2 is a cross-sectional view of one embodiment of the tube in accordance with the present invention; and Fig. 3 is a cross-sectional view of another embodiment of the tube in accordance with the present invention.
Best Mode for Carrying Out the Invention
Now, preferred embodiments of the present invention will be described in detail with reference to the annexed drawings.
As shown in Figs, la to Id, a method for connecting heat-radiating fins 20 and tubes 10 for a radiator comprises the steps of (a) vertically arranging a plurality of the heat-radiating fins 20, through which plural tube holes 21 with an inner diameter slightly larger than the outer diameter of the tube 10 are formed at a predetermined distance; (b) inserting the tubes 10 into the corresponding one of the tube holes 21 of the vertically-arranged heat-radiating fins 20; (c) inserting tube expanding tips 30 into an end of the corresponding one of the tubes 10; and (d) expanding the inner diameters of the tubes 10 by simultaneously pulling down the tube expanding tips 30 from the other end of the corresponding one of the tubes 10 so that the tubes 10 stick to the inner wall of the corresponding one of the tube holes 21.
The tube holes 21 provided with a flange are formed through each of the heat-radiating fins 10 so that the tube holes 21 are spaced from each other by a constant distance, and a plurality of the tube expanding tips 30 are connected to a tube expander.
Fig. 2 is a cross-sectional view of one embodiment of the tube 10 in accordance with the present invention. As shown in Fig. 2, the tube 10 has an oval cross-section.
Fig. 3 is a cross-sectional view of another embodiment of the tube 10 in accordance with the present invention. As shown in Fig. 3, the tube has an egg-shaped cross-section with different outer diameters at both ends.
Hereinafter, the method for connecting the heat- radiating fins 20 and the tubes 10 in accordance with the present invention will be described in detail with reference to the annexed drawings.
(First step)
In the first step, the heat-radiating fins 20 are vertically arranged. As shown in Fig. la, a plurality of the heat-radiating fins 20, through which plural tube holes 21 with an inner diameter slightly larger than the outer diameter of the tube 10 are formed at a predetermined distance, are vertically arranged so that the tube holes 21 of the heat-radiating fins 20 coincide with each other.
Since the tube holes 21 of the heat-radiating fins 20 coincide with each other in the first step, the tubes 10 will be easily inserted into the corresponding tube holes 21 of the heat radiating fins 20.
(Second step)
In the second step, the tubes 10 are inserted into the corresponding tube holes 21 of the vertically-arranged heat-radiating fins 20. As shown in Fig. lb, the tubes 10 are respectively inserted into the tube holes 21 of the vertically-arranged heat-radiating fins 20.
Since the tubes 10 are respectively inserted into the tube holes 21 of the vertically-arranged heat- radiating fins 20 in the second step, the tubes 10 will be simultaneously expanded by a single tube-expanding procedure.
(Third step) In the third step, the tube expanding tips 30 are inserted into an end of the corresponding one of the tubes 10. As shown in Fig. lc, the tube expanding tips 30 are respectively inserted into the tubes 10, which are inserted into the tube holes 21. Since the tube expanding tips 30 are respectively inserted into the tubes 10 in the third step, the tube expanding tips 30 will be simultaneously pulled down from the tubes 10 by means of the tube expander.
(Fourth step)
In the fourth step, the tube expanding tips 30 are simultaneously pulled down from the other end of the corresponding one of the tubes 10, thus expanding the inner diameters of the tubes 10. As shown in Fig. Id, the tube expanding tips 30 are simultaneously pulled down from the other end of the corresponding one of the tubes 10 in the direction of the arrow, thus expanding the inner diameters of the tubes 10 so that the tubes 10 stick to the inner diameter of the corresponding one of the tube holes 21.
Since the inner diameters of the tubes 10 are simultaneously expanded in the fourth step, the tubes 10 are firmly integrated with the inner walls of the tube holes 21 of the heat-radiating fins 20, respectively.
In accordance with the method of the present invention, the tubes 10 inserted into the tube holes 21 are simultaneously expanded by a single procedure so that the tubes 10 are firmly integrated with the inner walls of the tube holes 21 of the heat-radiating fins 20. Accordingly, the method of the present invention is advantageous in that it shortens a working time taken to connect the heat-radiating fins and the tubes, improves the productivity of a radiator manufacturing process, allows the radiator to be mass-produced, and reduces the production cost of the radiator.
Further, in accordance with the method of the present invention, as shown in Figs. 2 and 3, the tubes 10 do not have a circular cross-section, but have an oval or egg-shaped cross-section. Accordingly, the air resistance generated when air passes through the tubes 10 is reduced, thus allowing air to smoothly pass through the tubes 10. Further, the contact area of the tubes 10 with the air is increased, thus allowing heat exchange with the air to be easily achieved and improving the heat exchanging efficiency and heat radiating effect of the radiator.
Industrial Applicability
As apparent from the above description, the present invention provides a method for connecting heat-radiating fins and tubes for a radiator by a simple procedure, in which the tubes inserted into tube holes of the heat- radiating fins are simultaneously expanded by a single tube-expanding procedure, thus shortening a working time taken to connect the heat-radiating fins and the tubes, improving the productivity of a radiator manufacturing process, allowing the radiator to be mass-produced, and reducing the production cost of the radiator. Further, the tubes have an oval or egg-shaped cross-section, thus allowing air to smoothly pass through the tubes, increasing the contact area of the tubes with air, and improving the heat exchanging efficiency and heat radiating effect of the radiator. Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A method for connecting heat-radiating fins and tubes for a radiator, comprising the steps of: (a) vertically arranging a plurality of heat- radiating fins, through which plural tube holes with an inner diameter slightly larger than the outer diameter of a tube are formed at a predetermined distance;
(b) inserting the tubes into the corresponding one of the tube holes of the vertically-arranged heat- radiating fins;
(c) inserting tube expanding tips into an end of the corresponding one of the tubes; and
(d) expanding the inner diameters of the tubes by simultaneously pulling down the tube expanding tips from the other end of the corresponding one of the tubes so that the tubes stick to the inner wall of the corresponding one of the tube holes.
2. The method as set forth in claim 1, wherein each of the tubes has an oval cross-section.
3. The method as set forth in claim 1, wherein each of the tubes has an egg-shaped cross-section with different outer diameters at both ends.
PCT/KR2003/001662 2002-08-20 2003-08-19 Connecting heat-radiating fins and tubes for radiator WO2004018954A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003251205A AU2003251205A1 (en) 2002-08-20 2003-08-19 Connecting heat-radiating fins and tubes for radiator

Applications Claiming Priority (2)

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KR1020020049153A KR20020072265A (en) 2002-08-20 2002-08-20 Method for combining fin and tube for radiator
KR10-2002-0049153 2002-08-20

Publications (1)

Publication Number Publication Date
WO2004018954A1 true WO2004018954A1 (en) 2004-03-04

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AU (1) AU2003251205A1 (en)
WO (1) WO2004018954A1 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
EP1691159A1 (en) * 2005-02-04 2006-08-16 Küba Kältetechnik GmbH Tube-fin heat exchanger, manufacturing process and expanding tool therefore
FR2932551A1 (en) * 2008-06-11 2009-12-18 Atlantic Industrie Sas Heat transfer fluid type electric radiator for use in room, has heating blades set in parallel to each other by tubular element to which blades are fixed, where each blade comprises plain body made of thermal conductive material
WO2016207178A1 (en) * 2015-06-24 2016-12-29 Valeo Systemes Thermiques Heat exchanger with improved tubes
WO2019002296A1 (en) * 2017-06-30 2019-01-03 Valeo Systemes Thermiques Heat exchanger and method for manufacturing same

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WO2012141403A1 (en) * 2011-04-15 2012-10-18 세진이노테크(주) Intercooler and method for manufacturing same
KR102173367B1 (en) 2017-09-05 2020-11-04 한온시스템 주식회사 Heat Exchanger

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JPH0825150A (en) * 1994-07-07 1996-01-30 Daikin Ind Ltd Manufacture of heat exchanger and heat exchanger
KR100314186B1 (en) * 1999-03-17 2001-11-15 구자홍 Tri-tube type heat exchanger for Evaporator

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JPS60216190A (en) * 1984-04-10 1985-10-29 Matsushita Seiko Co Ltd Heat transfer pipe and manufacture thereof
JPH06234031A (en) * 1993-02-10 1994-08-23 Kobe Steel Ltd Production of finned coil system heat exchanger
JPH0825150A (en) * 1994-07-07 1996-01-30 Daikin Ind Ltd Manufacture of heat exchanger and heat exchanger
KR100314186B1 (en) * 1999-03-17 2001-11-15 구자홍 Tri-tube type heat exchanger for Evaporator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1691159A1 (en) * 2005-02-04 2006-08-16 Küba Kältetechnik GmbH Tube-fin heat exchanger, manufacturing process and expanding tool therefore
FR2932551A1 (en) * 2008-06-11 2009-12-18 Atlantic Industrie Sas Heat transfer fluid type electric radiator for use in room, has heating blades set in parallel to each other by tubular element to which blades are fixed, where each blade comprises plain body made of thermal conductive material
WO2016207178A1 (en) * 2015-06-24 2016-12-29 Valeo Systemes Thermiques Heat exchanger with improved tubes
FR3038039A1 (en) * 2015-06-24 2016-12-30 Valeo Systemes Thermiques HEAT EXCHANGER WITH IMPROVED TUBES
WO2019002296A1 (en) * 2017-06-30 2019-01-03 Valeo Systemes Thermiques Heat exchanger and method for manufacturing same
FR3068450A1 (en) * 2017-06-30 2019-01-04 Valeo Systemes Thermiques HEAT EXCHANGER AND METHOD FOR MANUFACTURING THE SAME

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