US20040177948A1 - Heat exchanger and fabrication method thereof - Google Patents
Heat exchanger and fabrication method thereof Download PDFInfo
- Publication number
- US20040177948A1 US20040177948A1 US10/712,676 US71267603A US2004177948A1 US 20040177948 A1 US20040177948 A1 US 20040177948A1 US 71267603 A US71267603 A US 71267603A US 2004177948 A1 US2004177948 A1 US 2004177948A1
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- US
- United States
- Prior art keywords
- heat exchanger
- refrigerant
- pipes
- refrigerant pipe
- cooling fin
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 61
- 239000003507 refrigerant Substances 0.000 claims description 76
- 239000000463 material Substances 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000010257 thawing Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010060904 Freezing phenomenon Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
- B23Q11/0825—Relatively slidable coverings, e.g. telescopic
-
- 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
-
- B08B1/165—
-
- 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
- F28D1/047—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 bent, e.g. in a serpentine or zig-zag
- F28D1/0477—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
-
- 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
- F28F1/14—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 longitudinally
- F28F1/16—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 longitudinally the means being integral with the element, e.g. formed by extrusion
-
- 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
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
Definitions
- the present invention relates to a heat exchanger and its fabrication method, and more particularly, to a heat exchanger and its fabrication method capable of reducing a fabrication process and improving a heat exchange performance by integrally forming a refrigerant pipe and a cooling fin.
- a heat exchanger is a device for heat-exchanging by making two different fluids contact each other directly or indirectly, and commonly used for a heater, a cooler, an evaporator, a condenser and the like.
- FIG. 1 is a perspective view of a fin and tube type heat exchanger mainly used for the evaporator of a refrigerator in accordance with a conventional art.
- the conventional heat exchanger includes a refrigerant pipe 102 performing a heat exchanging operation while a refrigerant passes therethrough, a plurality of cooling fins 104 mounted at the refrigerant pipe 102 at regular intervals and extending a contact area of air passing between the refrigerant pipes 102 in order to enhance a heat transfer performance, and a support holder 106 mounted at both sides of the refrigerant pipe 102 and supporting the refrigerant pipe 102 .
- the refrigerant pipe 102 is formed such that a cooper pipe is repeatedly bent, and as shown in FIG. 2, the cooling fin 104 is formed in a flat type with a through hole 108 so as to be inserted in an outer circumference of the refrigerant pipe 102 , and made of an aluminum material.
- a method for fabricating the conventional heat exchanger is that the refrigerant pipe 102 is extruded, the cooling fins 104 are blanked and inserted to the refrigerant pipe 102 , and then an tube-expanding process is performed to expand a diameter of the refrigerant pipe 102 , whereby the cooling pins 104 are fixed at the outer circumference of the refrigerant pipe 102 .
- the conventional heat exchanger has the following problems.
- the refrigerant pipe 102 and the cooling fin 104 are made of copper and aluminum, potential difference corrosion is generated due to a potential difference between the two materials, which causes shortening of the life span of the heat exchanger.
- an object of the present invention is to provide a heat exchanger and its fabrication method capable of shortening a fabrication process and reducing a fabrication cost by integrally forming a refrigerant pipe and cooling fins.
- Another object of the present invention is to provide a heat exchanger and its fabrication method capable of enhancing a heat transfer performance and lengthening the life span of a heat exchanger by integrally forming a refrigerator pipe and cooling pins in the same material.
- a heat exchanger including: refrigerator pipes arranged at regular intervals; and cooling pins arranged between the refrigerator pipes and integrally formed with the refrigerator pipes; and a support holder disposed at both sides of the refrigerator pipes and supporting the refrigerator pipes.
- the refrigerant pipe and the cooling fin are made of an aluminum material.
- refrigerant pipes two refrigerant pipes are arranged at a certain interval and repeatedly bent, respectively.
- the cooling fins are formed in a direction of a right angle to a longitudinal direction of the refrigerant pipe between the refrigerants and has a certain tilt angle.
- a method for fabricating a heat exchanger including: a first step of integrally forming refrigerant pipes and a flat type cooling fin forming part between the refrigerant pipes; a second step of forming a plurality of cooling fins at the cooling fin forming part; a third step of bending the cooling fin-formed refrigerant pipe several times at certain intervals; and a fourth step of assembling a support holder at both sides of the refrigerant pipe.
- two refrigerant pipes and the flat type cooling fin forming part between the two refrigerant pipes are integrally formed by using a molding unit.
- the plural cooling fins are formed with a certain tile angle by passing the cooling fin forming part between louvering gears.
- FIG. 1 is a perspective view of a heat exchanger in accordance with a conventional art
- FIG. 2 is a partial sectional view of the heat exchanger in accordance with the conventional art
- FIG. 3 is a perspective view showing a heat exchanger in accordance with the present invention.
- FIG. 4 is an enlarged view of a portion ‘A’ of FIG. 3;
- FIG. 5 is a partial front view of the heat exchanger in accordance with the present invention.
- FIG. 6 is a partial sectional view of the heat exchanger in accordance with the present invention.
- FIGS. 7 through 10 are sequential perspective views showing a fabrication process of the heat exchanger in accordance with the present invention.
- FIGS. 11, 12A and 12 B are graphs comparatively showing performances of the conventional heat exchanger and the heat exchanger in accordance with the present invention.
- FIG. 3 is a perspective view showing a heat exchanger
- FIG. 4 is an enlarged view of a portion ‘A’ of FIG. 3
- FIG. 5 is a partial front view of the heat exchanger
- FIG. 6 is a partial sectional view of the heat exchanger in accordance with the present invention.
- the heat exchanger of the present invention is featured in that refrigerant pipes 10 through which a refrigerant passes are arranged at a certain interval and cooling fins 12 are integrally formed between the refrigerant pipes 10 to enhance a heat transfer performance by enlarging a contact area to air which passes between the refrigerant pipes 10 .
- a support holder 14 is disposed at both sides of the refrigerant pipes 10 in order to support the heat exchanger.
- the refrigerant pipes 10 are arranged at certain intervals in such a tube type that the refrigerant can pass through, and the cooling fins 12 are integrally formed in the same material as that of the refrigerant pipe 10 between the refrigerant pipes 10 .
- the refrigerant pipe plural ones may be arranged, and preferably, two refrigerant pipes 10 are constructed as a pair and the cooling fins 12 are formed therebetween.
- the refrigerant pipe 10 are bent several times at certain intervals according to a size of a space where the refrigerant pipes are installed, and as the air for performing a cooling operation passes between the refrigerant pipes 10 and the cooling fins 12 , heat is exchanged.
- the cooling fins 12 are arranged at certain intervals in a direction of a right angle to an axis between the refrigerant pipes 10 , and in order to smoothly discharge condensate water and for a smooth contact with air, the cooling fins 12 are formed at a certain tilt angle.
- the support holder 14 includes a plurality of slots 16 into which portions of the refrigerant pipes 10 are inserted. Cooling fins existing at both end portions of the refrigerant pipes 10 are removed so that the end portions of the refrigerant pipes 10 can be inserted into the slots of the support holder 14 .
- a cooling fin forming part 20 for integrally forming the refrigerant pipe 10 and the cooling fin 14 is formed. That is, the flat type cooling fin forming part 20 having two refrigerant pipes 10 and a certain thickness is formed by using a molding unit 30 .
- the cooling fins 14 are formed at the cooling fin forming part 20 . That is, when the cooling fin forming part 20 passes between engaged louvering gears 40 , the cooling fin forming part 20 is punched at certain intervals by the louvering gears 40 , to thereby form plural cooling fins 12 .
- the tilt angle of the cooling fin 12 differs depending on a tooth angle of the louvering gear 40 .
- a desired tile angle of the cooling fin 12 can be obtained by controlling the tooth angle of the louvering gear 40 .
- the support holder 14 is assembled at both sides of the bent refrigerant pipes 10 , thereby completing fabrication of the heat exchange. At this time, cooling fins existing at both end portions 50 of the refrigerant pipes 10 are removed so that the both end portions can be inserted into the slots 16 formed at the support holder 14 .
- FIG. 11 is a graph comparatively showing performances of the conventional heat exchanger and the heat exchanger in accordance with the present invention.
- a graph (C) indicating a heat transfer coefficient value of the present invention is greater than a graph (D) indicating a heat transfer coefficient value of the conventional art, so that the heat exchanger of the present invention has an excellent heat transfer performance compared to that of the conventional art.
- FIG. 12A and 12B are graph comparatively showing internal temperatures of a refrigerator when a door of the refrigerator is opened and closed in both cases where the heat exchanger of the present invention is installed in the refrigerator and the heat exchanger of the conventional art is installed in the refrigerator.
- the heat exchanger and its fabrication method of the present invention have the following advantages.
- the fabrication process of the heat exchanger can be reduced, and its fabrication cost can be also reduced.
Abstract
A heat exchanger includes: refrigerator pipes arranged at regular intervals; and cooling pins arranged between the refrigerator pipes and integrally formed with the refrigerator pipes. A fabrication process and cost can be reduced, a heat transfer performance can be enhanced, and the life span of the heat exchanger can be lengthened.
Description
- 1. Field of the Invention
- The present invention relates to a heat exchanger and its fabrication method, and more particularly, to a heat exchanger and its fabrication method capable of reducing a fabrication process and improving a heat exchange performance by integrally forming a refrigerant pipe and a cooling fin.
- 2. Description of the Background Art
- In general, a heat exchanger is a device for heat-exchanging by making two different fluids contact each other directly or indirectly, and commonly used for a heater, a cooler, an evaporator, a condenser and the like.
- FIG. 1 is a perspective view of a fin and tube type heat exchanger mainly used for the evaporator of a refrigerator in accordance with a conventional art.
- The conventional heat exchanger includes a
refrigerant pipe 102 performing a heat exchanging operation while a refrigerant passes therethrough, a plurality ofcooling fins 104 mounted at therefrigerant pipe 102 at regular intervals and extending a contact area of air passing between therefrigerant pipes 102 in order to enhance a heat transfer performance, and asupport holder 106 mounted at both sides of therefrigerant pipe 102 and supporting therefrigerant pipe 102. - The
refrigerant pipe 102 is formed such that a cooper pipe is repeatedly bent, and as shown in FIG. 2, thecooling fin 104 is formed in a flat type with athrough hole 108 so as to be inserted in an outer circumference of therefrigerant pipe 102, and made of an aluminum material. - A method for fabricating the conventional heat exchanger is that the
refrigerant pipe 102 is extruded, thecooling fins 104 are blanked and inserted to therefrigerant pipe 102, and then an tube-expanding process is performed to expand a diameter of therefrigerant pipe 102, whereby thecooling pins 104 are fixed at the outer circumference of therefrigerant pipe 102. - However, the conventional heat exchanger has the following problems.
- That is, because the
refrigerant pipe 102 and thecooling pins 104 are processed through separate processes and then thecooling pins 104 are combined to therefrigerant pipe 102, the fabrication process is complicate and thus a fabrication cost increases. - In addition, because the
cooling fin 104 is inserted at the outer circumference of therefrigerant pipe 102, a gap (T) exists between therefrigerant pipe 102 and thecooling pin 104, causing degradation of a heat transfer performance. - Especially, when the heat exchanger is used for a freezing device, a freezing phenomenon is generated at the
refrigerant pipe 102 and thecooling pin 104 due to condensate water, and a defrosting is performed by using a defrosting heater. At this time, as the freezing and defrosting are repeatedly performed at the gap (T) between therefrigerant pipe 102 and thecooling pin 104, the gap (T) widens, and thus, the heat transfer performance is more degraded. - In addition, because the
refrigerant pipe 102 and thecooling fin 104 are made of copper and aluminum, potential difference corrosion is generated due to a potential difference between the two materials, which causes shortening of the life span of the heat exchanger. - Therefore, an object of the present invention is to provide a heat exchanger and its fabrication method capable of shortening a fabrication process and reducing a fabrication cost by integrally forming a refrigerant pipe and cooling fins.
- Another object of the present invention is to provide a heat exchanger and its fabrication method capable of enhancing a heat transfer performance and lengthening the life span of a heat exchanger by integrally forming a refrigerator pipe and cooling pins in the same material.
- To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a heat exchanger including: refrigerator pipes arranged at regular intervals; and cooling pins arranged between the refrigerator pipes and integrally formed with the refrigerator pipes; and a support holder disposed at both sides of the refrigerator pipes and supporting the refrigerator pipes.
- The refrigerant pipe and the cooling fin are made of an aluminum material.
- Regarding the refrigerant pipes, two refrigerant pipes are arranged at a certain interval and repeatedly bent, respectively.
- The cooling fins are formed in a direction of a right angle to a longitudinal direction of the refrigerant pipe between the refrigerants and has a certain tilt angle.
- To achieve the above objects, there is also provided a method for fabricating a heat exchanger including: a first step of integrally forming refrigerant pipes and a flat type cooling fin forming part between the refrigerant pipes; a second step of forming a plurality of cooling fins at the cooling fin forming part; a third step of bending the cooling fin-formed refrigerant pipe several times at certain intervals; and a fourth step of assembling a support holder at both sides of the refrigerant pipe.
- In the first step, two refrigerant pipes and the flat type cooling fin forming part between the two refrigerant pipes are integrally formed by using a molding unit.
- In the second step, the plural cooling fins are formed with a certain tile angle by passing the cooling fin forming part between louvering gears.
- The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
- The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
- In the drawings:
- FIG. 1 is a perspective view of a heat exchanger in accordance with a conventional art;
- FIG. 2 is a partial sectional view of the heat exchanger in accordance with the conventional art;
- FIG. 3 is a perspective view showing a heat exchanger in accordance with the present invention;
- FIG. 4 is an enlarged view of a portion ‘A’ of FIG. 3;
- FIG. 5 is a partial front view of the heat exchanger in accordance with the present invention;
- FIG. 6 is a partial sectional view of the heat exchanger in accordance with the present invention;
- FIGS. 7 through 10 are sequential perspective views showing a fabrication process of the heat exchanger in accordance with the present invention; and
- FIGS. 11, 12A and12B are graphs comparatively showing performances of the conventional heat exchanger and the heat exchanger in accordance with the present invention.
- Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
- There can be plural embodiments of a heat exchanger and its fabrication method in accordance with the present invention, of which the most preferred one will now be described.
- FIG. 3 is a perspective view showing a heat exchanger, FIG. 4 is an enlarged view of a portion ‘A’ of FIG. 3, FIG. 5 is a partial front view of the heat exchanger, and FIG. 6 is a partial sectional view of the heat exchanger in accordance with the present invention.
- The heat exchanger of the present invention is featured in that
refrigerant pipes 10 through which a refrigerant passes are arranged at a certain interval andcooling fins 12 are integrally formed between therefrigerant pipes 10 to enhance a heat transfer performance by enlarging a contact area to air which passes between therefrigerant pipes 10. In addition, asupport holder 14 is disposed at both sides of therefrigerant pipes 10 in order to support the heat exchanger. - The
refrigerant pipes 10 are arranged at certain intervals in such a tube type that the refrigerant can pass through, and thecooling fins 12 are integrally formed in the same material as that of therefrigerant pipe 10 between therefrigerant pipes 10. Regarding the refrigerant pipe, plural ones may be arranged, and preferably, tworefrigerant pipes 10 are constructed as a pair and thecooling fins 12 are formed therebetween. - The
refrigerant pipe 10 are bent several times at certain intervals according to a size of a space where the refrigerant pipes are installed, and as the air for performing a cooling operation passes between therefrigerant pipes 10 and thecooling fins 12, heat is exchanged. - The
cooling fins 12 are arranged at certain intervals in a direction of a right angle to an axis between therefrigerant pipes 10, and in order to smoothly discharge condensate water and for a smooth contact with air, thecooling fins 12 are formed at a certain tilt angle. - The
support holder 14 includes a plurality ofslots 16 into which portions of therefrigerant pipes 10 are inserted. Cooling fins existing at both end portions of therefrigerant pipes 10 are removed so that the end portions of therefrigerant pipes 10 can be inserted into the slots of thesupport holder 14. - A method for fabricating the heat exchanger will now be described in detail.
- To begin with, as shown in FIG. 7, a cooling
fin forming part 20 for integrally forming therefrigerant pipe 10 and thecooling fin 14 is formed. That is, the flat type coolingfin forming part 20 having tworefrigerant pipes 10 and a certain thickness is formed by using amolding unit 30. - Next, as shown in FIG. 8, the
cooling fins 14 are formed at the coolingfin forming part 20. That is, when the coolingfin forming part 20 passes between engagedlouvering gears 40, the coolingfin forming part 20 is punched at certain intervals by thelouvering gears 40, to thereby form plural cooling fins 12. - At this time, the tilt angle of the
cooling fin 12 differs depending on a tooth angle of thelouvering gear 40. Thus, a desired tile angle of thecooling fin 12 can be obtained by controlling the tooth angle of thelouvering gear 40. - And then, as shown in FIG. 9, the cooling fin-formed
refrigerant pipes 10 are bent several times at certain intervals. - And as shown in FIG. 10, the
support holder 14 is assembled at both sides of thebent refrigerant pipes 10, thereby completing fabrication of the heat exchange. At this time, cooling fins existing at bothend portions 50 of therefrigerant pipes 10 are removed so that the both end portions can be inserted into theslots 16 formed at thesupport holder 14. - FIG. 11 is a graph comparatively showing performances of the conventional heat exchanger and the heat exchanger in accordance with the present invention.
- With reference to FIG. 11, the more a heat transfer coefficient (U) according to the speed of a flow of introduced air is, the better the heat transfer performance. Thus, as noted in FIG. 11, a graph (C) indicating a heat transfer coefficient value of the present invention is greater than a graph (D) indicating a heat transfer coefficient value of the conventional art, so that the heat exchanger of the present invention has an excellent heat transfer performance compared to that of the conventional art.
- FIG. 12A and 12B are graph comparatively showing internal temperatures of a refrigerator when a door of the refrigerator is opened and closed in both cases where the heat exchanger of the present invention is installed in the refrigerator and the heat exchanger of the conventional art is installed in the refrigerator.
- As shown in the FIG. 12A, when 10 hours elapsed after a testing started, an internal temperature of the refrigerator in which the conventional heat exchange was installed was 10.5° C., whereas as shown in the FIG. 12B, an internal temperature of the refrigerator in which the heat exchanger of the present invention was installed was 9.8° C. Therefore, it is noted that the heat transfer performance of the heat exchanger of the present invention is excellent compared to that of the conventional heat exchanger.
- As so far described, the heat exchanger and its fabrication method of the present invention have the following advantages.
- For example, first, because the refrigerant pipes and the cooling fin forming part are integrally formed and then the cooling fins are formed, the fabrication process of the heat exchanger can be reduced, and its fabrication cost can be also reduced.
- Second, because the refrigerant pipes and the cooling fins are integrally formed, the heat exchange performance between the refrigerant passing between the refrigerant pipes and the air passing between the cooling fins can be enhanced.
- Third, because the refrigerant pipe and the cooling pins are made of the same material, a potential difference corrosion that may be generated between different materials can be prevented, leakage of the refrigerant can be prevented, and the life span of the heat exchanger can be lengthened.
- As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalence of such metes and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. A heat exchanger comprising:
refrigerator pipes arranged at regular intervals; and
cooling pins arranged between the refrigerator pipes and integrally formed with the refrigerator pipes.
2. The heat exchanger of claim 1 , wherein a support holder supporting the refrigerator pipes is disposed at both sides of the refrigerator pipes.
3. The heat exchanger of claim 1 , wherein the refrigerant pipe and the cooling fin are made of an aluminum material.
4. The heat exchanger of claim 1 , wherein, regarding the refrigerant pipes, two refrigerant pipes are arranged at a certain interval and repeatedly bent, respectively.
5. The heat exchanger of claim 1 , wherein the cooling fins are formed in a direction of a right angle to a longitudinal direction of the refrigerant pipe between the refrigerants and has a certain tilt angle.
6. The heat exchanger of claim 2 , wherein there is no cooling fin at a portion of the refrigerant pipe inserted into a slot of the support holder.
7. A method for fabricating a heat exchanger comprising:
a first step of integrally forming refrigerant pipes and a flat type cooling fin forming part between the refrigerant pipes;
a second step of forming a plurality of cooling fins at the cooling fin forming part;
a third step of bending the cooling fin-formed refrigerant pipe several times at certain intervals; and
a fourth step of assembling a support holder at both sides of the refrigerant pipe.
8. The method of claim 7 , wherein, in the first step, two refrigerant pipes and the flat type cooling fin forming part between the two refrigerant pipes are integrally formed by using a molding unit.
9. The method of claim 7 , wherein, in the second step, the plural cooling fins are formed with a certain tile angle by passing the cooling fin forming part between louvering gears.
10. The method of claim 7 further comprising:
removing cooing fins formed at both sides of the refrigerant pipe so that the refrigerant pipe can be inserted into a slot of the support holder after the refrigerant pipe is bent.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR15824/2003 | 2003-03-13 | ||
KR1020030015824A KR20040080830A (en) | 2003-03-13 | 2003-03-13 | Heat exchanger and manufacturing method thereof |
Publications (1)
Publication Number | Publication Date |
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US20040177948A1 true US20040177948A1 (en) | 2004-09-16 |
Family
ID=36292636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/712,676 Abandoned US20040177948A1 (en) | 2003-03-13 | 2003-11-13 | Heat exchanger and fabrication method thereof |
Country Status (7)
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US (1) | US20040177948A1 (en) |
EP (1) | EP1457751A1 (en) |
JP (1) | JP2004279023A (en) |
KR (1) | KR20040080830A (en) |
CN (1) | CN1530626A (en) |
AU (1) | AU2003261501B2 (en) |
MX (1) | MXPA03010641A (en) |
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US20050109496A1 (en) * | 2003-11-25 | 2005-05-26 | Baolute Ren | Heat exchanger tubing with connecting member and fins and methods of heat exchange |
US20060232945A1 (en) * | 2005-04-18 | 2006-10-19 | International Business Machines Corporation | Apparatus and method for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover of the electronics rack |
US20070221365A1 (en) * | 2006-03-24 | 2007-09-27 | Evapco, Inc. | U-shaped heat exchanger tube with a concavity formed into its return bend |
US20090080173A1 (en) * | 2007-09-25 | 2009-03-26 | International Business Machines Corporation | Vapor-compression heat exchange system with evaporator coil mounted to outlet door cover of an electronics rack |
US20090122488A1 (en) * | 2007-11-14 | 2009-05-14 | International Business Machines Corporation | Apparatus for facilitating cooling of an electronics rack through the use of an air-to-liquid heat exchanger |
US20090154096A1 (en) * | 2007-12-17 | 2009-06-18 | International Business Machines Corporation | Apparatus and method for facilitating cooling of an electronics system |
US20100236766A1 (en) * | 2009-03-17 | 2010-09-23 | Ulics Jr George | Heat Exchanger |
US20110051372A1 (en) * | 2009-09-02 | 2011-03-03 | International Business Machines Corporation | Stress relieved hose routing to liquid-cooled electronics rack door |
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US8929075B2 (en) | 2012-04-10 | 2015-01-06 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Heat exchanger door for an electronics rack |
US9025332B2 (en) | 2012-11-12 | 2015-05-05 | International Business Machines Corporation | Inlet-air-cooling door assembly for an electronics rack |
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US7028766B2 (en) * | 2003-11-25 | 2006-04-18 | Alcoa Inc. | Heat exchanger tubing with connecting member and fins and methods of heat exchange |
US20050109496A1 (en) * | 2003-11-25 | 2005-05-26 | Baolute Ren | Heat exchanger tubing with connecting member and fins and methods of heat exchange |
US7830657B2 (en) | 2005-04-18 | 2010-11-09 | Vette Corp. | Apparatus for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover of the electronics rack |
US20060232945A1 (en) * | 2005-04-18 | 2006-10-19 | International Business Machines Corporation | Apparatus and method for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover of the electronics rack |
US7385810B2 (en) * | 2005-04-18 | 2008-06-10 | International Business Machines Corporation | Apparatus and method for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover of the electronics rack |
US20080232069A1 (en) * | 2005-04-18 | 2008-09-25 | International Business Machines Corporation | Apparatus for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover of the electronics rack |
US20070221365A1 (en) * | 2006-03-24 | 2007-09-27 | Evapco, Inc. | U-shaped heat exchanger tube with a concavity formed into its return bend |
US20090080173A1 (en) * | 2007-09-25 | 2009-03-26 | International Business Machines Corporation | Vapor-compression heat exchange system with evaporator coil mounted to outlet door cover of an electronics rack |
US7963118B2 (en) | 2007-09-25 | 2011-06-21 | International Business Machines Corporation | Vapor-compression heat exchange system with evaporator coil mounted to outlet door of an electronics rack |
US20090122488A1 (en) * | 2007-11-14 | 2009-05-14 | International Business Machines Corporation | Apparatus for facilitating cooling of an electronics rack through the use of an air-to-liquid heat exchanger |
US7950244B2 (en) | 2007-11-14 | 2011-05-31 | International Business Machines Corporation | Apparatus for facilitating cooling of an electronics rack through the use of an air-to-liquid heat exchanger |
US20090154096A1 (en) * | 2007-12-17 | 2009-06-18 | International Business Machines Corporation | Apparatus and method for facilitating cooling of an electronics system |
US7660109B2 (en) | 2007-12-17 | 2010-02-09 | International Business Machines Corporation | Apparatus and method for facilitating cooling of an electronics system |
US8997845B2 (en) | 2009-03-17 | 2015-04-07 | Automotive Components Holdings, Llc | Heat exchanger with long and short fins |
US20100236766A1 (en) * | 2009-03-17 | 2010-09-23 | Ulics Jr George | Heat Exchanger |
US20110051372A1 (en) * | 2009-09-02 | 2011-03-03 | International Business Machines Corporation | Stress relieved hose routing to liquid-cooled electronics rack door |
US8077462B2 (en) | 2009-09-02 | 2011-12-13 | International Business Machines Corporation | Stress relieved hose routing to liquid-cooled electronics rack door |
US8189334B2 (en) | 2010-05-26 | 2012-05-29 | International Business Machines Corporation | Dehumidifying and re-humidifying cooling apparatus and method for an electronics rack |
US9414519B2 (en) | 2010-05-26 | 2016-08-09 | International Business Machines Corporation | Dehumidifying cooling apparatus and method for an electronics rack |
US8144467B2 (en) | 2010-05-26 | 2012-03-27 | International Business Machines Corporation | Dehumidifying and re-humidifying apparatus and method for an electronics rack |
US9338924B2 (en) | 2010-05-26 | 2016-05-10 | International Business Machines Corporation | Dehumidifying cooling apparatus and method for an electronics rack |
US9173324B2 (en) | 2010-05-26 | 2015-10-27 | International Business Machines Corporation | Dehumidifying cooling apparatus and method for an electronics rack |
US9038406B2 (en) | 2010-05-26 | 2015-05-26 | International Business Machines Corporation | Dehumidifying cooling apparatus and method for an electronics rack |
US7905096B1 (en) | 2010-05-26 | 2011-03-15 | International Business Machines Corporation | Dehumidifying and re-humidifying air cooling for an electronics rack |
US8941993B2 (en) | 2012-04-10 | 2015-01-27 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Heat exchanger door for an electronics rack |
US8929075B2 (en) | 2012-04-10 | 2015-01-06 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Heat exchanger door for an electronics rack |
US8693199B2 (en) | 2012-04-10 | 2014-04-08 | International Business Machines Corporation | Structural configuration of a heat exchanger door for an electronics rack |
US9354001B2 (en) | 2012-04-10 | 2016-05-31 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Process for optimizing a heat exchanger configuration |
US8693198B2 (en) | 2012-04-10 | 2014-04-08 | International Business Machines Corporation | Structural configuration of a heat exchanger door for an electronics rack |
US9631880B2 (en) | 2012-04-10 | 2017-04-25 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Process for optimizing a heat exchanger configuration |
US9025332B2 (en) | 2012-11-12 | 2015-05-05 | International Business Machines Corporation | Inlet-air-cooling door assembly for an electronics rack |
US9025331B2 (en) | 2012-11-12 | 2015-05-05 | International Business Machines Corporation | Inlet-air-cooling door assembly for an electronics rack |
USD800282S1 (en) * | 2016-03-03 | 2017-10-17 | Lennox Industries Inc. | Heat exchanger fin |
EP3521744A4 (en) * | 2016-09-28 | 2020-04-29 | Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. | Heat exchange assembly for heat exchanger, heat exchanger, and mold |
US11118839B2 (en) | 2016-09-28 | 2021-09-14 | Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. | Heat exchange assembly for heat exchanger, heat exchanger, and mold |
CN108443950A (en) * | 2018-05-28 | 2018-08-24 | 江苏春江恒跃节能科技有限公司 | Warm-air drier heating mechanism, warm-air drier and its working method |
Also Published As
Publication number | Publication date |
---|---|
AU2003261501A1 (en) | 2004-09-30 |
CN1530626A (en) | 2004-09-22 |
EP1457751A1 (en) | 2004-09-15 |
JP2004279023A (en) | 2004-10-07 |
KR20040080830A (en) | 2004-09-20 |
MXPA03010641A (en) | 2004-10-15 |
AU2003261501B2 (en) | 2005-10-06 |
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Legal Events
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AS | Assignment |
Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHO, NAM SOO;LEE, JANG SEOK;JHEE, SUNG;REEL/FRAME:014706/0433 Effective date: 20031020 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |