US20150027678A1 - Heat exchanger and method and apparatus for manufacturing the same - Google Patents
Heat exchanger and method and apparatus for manufacturing the same Download PDFInfo
- Publication number
- US20150027678A1 US20150027678A1 US14/338,528 US201414338528A US2015027678A1 US 20150027678 A1 US20150027678 A1 US 20150027678A1 US 201414338528 A US201414338528 A US 201414338528A US 2015027678 A1 US2015027678 A1 US 2015027678A1
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- Prior art keywords
- treatment
- heat
- tube
- fin
- heat exchanger
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- 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
- B21D53/022—Making the fins
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/02—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
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- 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
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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
- 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
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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
- 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
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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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
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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
- F28F17/00—Removing ice or water from heat-exchange apparatus
- F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
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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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
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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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/006—Preventing deposits of ice
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
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- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/007—Condensers
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- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/0071—Evaporators
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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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
- F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
- F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
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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
- F28F2245/00—Coatings; Surface treatments
- F28F2245/04—Coatings; Surface treatments hydrophobic
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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
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/20—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes with nanostructures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49377—Tube with heat transfer means
- Y10T29/49378—Finned tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53113—Heat exchanger
Definitions
- a heat exchanger and a method and apparatus for manufacturing the same are disclosed herein.
- a heat exchanger may be one component of a refrigeration cycle.
- the heat exchanger may be used in electric appliances, such as refrigerators or air conditioners in which the refrigeration cycle is performed.
- the heat exchanger may include a refrigerant tube through which a refrigerant may flow and a heat-exchange fin coupled to the refrigerant tube to allow the refrigerant to be heat-exchanged with external air.
- the heat-exchange fin may be coupled to the refrigerant tube to increase a heat-exchange area in which the refrigerant is heat-exchanged with the air.
- the heat exchanger may function as a condenser or an evaporator.
- a heat exchanger functions as a condenser
- a high-pressure refrigerant compressed by a compressor may flow through the refrigerant tube to heat-exchange (heat dissipation) with air and then be condensed.
- a heat exchanger functions as an evaporator
- a low-pressure refrigerant may flow through the refrigerant tube to heat-exchange (heat adsorption) with air and then be evaporated.
- the heat exchanger When a heat exchanger functions as an evaporator of a refrigerator, the heat exchanger may be exposed to a low-temperature environment of a storage compartment of the refrigerator to heat-exchange with cool air of the storage compartment. That is, the refrigerant tube of the heat exchanger may have a temperature less than a temperature of the cool air of the storage compartment, and thus, condensate water may be generated due to a temperature difference between the refrigerant tube (or the heat exchange fin) and the cool air.
- the condensate water may freeze forming frost on a surface of the heat exchanger, that is, surfaces of the refrigerant tube and heat-exchange fin (frost formation), thereby disturbing heat exchange action between the refrigerant tube and the cool air. Therefore, it is important to prevent frost from being formed on the surface of the heat exchanger so as to improve efficiency of the heat exchanger.
- frost may form on the refrigerant tube or the heat-exchanger, and thus, it takes a lot of time to remove the frost formed on the heat exchanger.
- FIG. 1 is a schematic view of a heat exchanger according to an embodiment
- FIG. 2 is a cross-sectional view taken along line II-II′ of FIG. 1 ;
- FIG. 3 is a flowchart of a method for manufacturing a heat exchanger according to an embodiment
- FIG. 4 is a schematic view of an apparatus for manufacturing a heat exchanger according to an embodiment
- FIG. 5 is a flowchart of a surface treatment process according to an embodiment
- FIG. 6 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment.
- FIG. 7 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment.
- FIG. 1 is a view of a schematic heat exchanger according to an embodiment.
- FIG. 2 is a cross-sectional view taken along line II-II′ of FIG. 1 .
- a heat exchanger 10 may include a refrigerant tube 100 , through which a refrigerant may flow, and at least one heat-exchange fin 110 coupled to the refrigerant tube 100 .
- the at least one heat-exchange fin 110 may include a plurality of heat-exchange fins 110 .
- the refrigerant tube 100 may be arranged in a plurality of rows and be coupled to the plurality of the heat-exchange fins 110 .
- a through hole 115 through which the refrigerant tube 100 may pass, may be formed in each of the plurality of heat-exchange fins 110 .
- the refrigerant tube 100 may be disposed to pass through the plurality of heat-exchange fins 110 through the through holes 115 .
- the refrigerant flowing through the refrigerant tube 100 may be heat-exchanged with air flowing between the plurality of heat-exchange fins 110 .
- the refrigerant tube 100 may include a refrigerant introduction 101 , through which the refrigerant may be introduced, and a refrigerant discharge 105 , through which the refrigerant may be discharged.
- the refrigerant introduced through the refrigerant introduction 101 may be heat-exchanged with the air and then be discharged from the heat exchanger 10 through the refrigerant discharge 105 .
- the heat exchanger 10 may include at least one coupling plate 120 that supports the refrigerant tube 100 , and at least one return band 108 coupled to the at least one coupling plate 120 to turn a flow direction of the refrigerant of the refrigerant tube 100 .
- the return band 108 may have a U-shape, at least one portion of which may be curved.
- the at least one coupling plate 120 may include a coupling plate 120 disposed at both sides or ends of the refrigerant tube 100 to support the refrigerant tube 100 . Also, one portion of refrigerant tube 100 may be coupled to a first end of the return band 108 , and another portion of the refrigerant tube 100 may be coupled to a second end of the return band 108 .
- the refrigerant tube 100 and the heat-exchange fin 110 may be formed of aluminum materials, respectively. As the refrigerant tube 100 and the heat-exchange fin 110 may be formed of the aluminum materials, the heat exchanger 10 may be reduced in weight and manufacturing cost.
- the refrigerant tube 100 and the heat-exchange fin 110 may be surface-treated through a predetermined processing process.
- the processing process may be performed at one time in a state in which the refrigerant tube 100 and the heat-exchange fin 110 are coupled to each other.
- a first tube treatment 130 may be disposed on the refrigerant tube 100 .
- the first tube treatment 130 may include a fine unevenness formed by performing physical or chemical treatment on the surface of the refrigerant tube 100 .
- the fine unevenness of the first tube treatment 130 may have a structure in which a protrusion and a recess are repeatedly formed.
- the fine unevenness of the first tube treatment 130 may have a size in micrometer ( ⁇ m) unit.
- micrometer ( ⁇ m) unit may be understood as a size ranging from about 1 ⁇ m to about 1000 ⁇ m.
- a first fin treatment 140 may be disposed on the heat-exchange fin 110 .
- the first fin treatment 140 may include a fine unevenness formed by performing physical or chemical treatment on the surface of the heat-exchange fin 110 .
- the fine unevenness of the first fin treatment 140 may have a structure in which a protrusion and a recess are repeatedly formed.
- the fine unevenness of the first fin treatment 140 may have a size in micrometer ( ⁇ m) unit.
- a second tube treatment 135 may be disposed on a surface of the first treatment 130 .
- the second tube treatment 135 may include a surface layer formed through an acid or base treatment process, for example.
- the surface layer may have a size in nanometer (nm) unit.
- nanometer (nm) unit may be understood as a size ranging from about 1 nm to about 1000 nm.
- the surface layer of the second tube treatment 135 may have a flake shape that protrudes from the surface of the first tube treatment 130 and be called a “metal nano-layer”.
- a second fin treatment 145 may be disposed on a surface of the first fin treatment 140 .
- the second fin treatment 145 may include a surface layer formed through an acid or base treatment process, for example.
- the surface layer of the second fin treatment 145 may have a flake shape that protrudes from the surface of the first fin treatment 140 and have a size in nanometer (nm) unit.
- a third tube treatment 138 may be disposed on the surface of the second treatment 135 .
- the third tube treatment 138 may include a hydrophobic high-molecular layer formed through a coating process, for example.
- the hydrophobic high-molecular layer of the third tube treatment 38 may include a fluorinate-based compound and have a thickness in nanometer (nm), for example, a thickness of about 1 nm to about 5 nm.
- a third fin treatment 148 may be disposed on the surface of the second fin treatment 145 .
- the third fin treatment 148 may include a hydrophobic high-molecular layer formed through a coating process, for example.
- the hydrophobic high-molecular layer of the third fin treatment 148 may include a fluorinate-based compound and have a thickness in nanometer (nm), for example, a thickness of about 1 nm to about 5 nm.
- a plurality of layers may be laminated on the surface of the refrigerant tube 100 . Also, due to the first, second, and third fin treatments 140 , 145 , and 148 , a plurality of layers may be laminated on the surface of the heat-exchange fin 110 .
- FIG. 3 is a flowchart of a method for manufacturing a heat exchanger according to an embodiment.
- the refrigerant tube 100 may be assembled with the at least one heat-exchange fin 110 to form an assembled body, in step S 11 .
- the term “assembled body” may be understood as an assembly in which the refrigerant tube 100 and the at least one heat-exchange fin 100 are not yet surface-treated.
- a fine unevenness may be processed on a surface of the assembled body, in step S 12 .
- the fine unevenness may include a first tube treatment 130 and a first fin treatment 140 .
- the fine roughness may be formed through one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid (base) etching method, for example.
- the sand blast method may be a method in which fine sand particles are sprayed by compressed air to physically collide with the surfaces of the refrigerant tube 100 and the at least one heat-exchange fin 110 , thereby forming a fine roughness.
- the sand paper method may be a method in which the surfaces of the refrigerant tube 100 and the at least one heat-exchange fin 110 are rubbed with a sand paper.
- the shot blast method may be a process in which fine particles of a metal or non-metal, such as a shut or grit, are sprayed onto the surfaces of the refrigerant tube 100 and the at least one heat-exchange fin 110 .
- the plasma etching method may be a dry etching process using gas plasma.
- the acid (base) etching method may be a wet etching process using an acid solution or a base solution as an etchant.
- the etchant may be a fluorinate acid-diluted solution, a nitric acid-diluted solution, a phosphoric acid-diluted solution, an acetic acid-diluted solution, a hydrochloric acid-diluted, a sulfuric acid-diluted solution, or a mixture thereof.
- the discharge treatment method may be a method in which the surfaces of the refrigerant tube 100 and the at least one heat-exchange fin 110 are melted using high-temperature heat generated by electrical discharge and then re-coagulated.
- the laser treatment method may be a method in which a high power laser pulse is incident into the refrigerant tube 100 and the at least one heat-exchange fin 110 to allow the surfaces of the refrigerant tube 100 and the at least one heat-exchange fin 110 to wear.
- a process for forming a metal nano-layer may be performed on a surface of the fine unevenness, in step S 13 .
- the metal nano-layer may include a second tube treatment 135 and a second fin treatment 145 .
- the process for forming the metal nano-layer may include an acid or base treatment process, for example.
- the acid or base treatment process may include a process for dipping the heat exchanger 10 into a bath in which a predetermined acid or base solution may be stored.
- a process for forming the hydrophobic high-molecular layer may be performed on the metal nano-layer, in step S 14 .
- the process for forming the hydrophobic high-molecular layer may include a process for coating with a fluorinate-based compound and a drying process, for example.
- FIG. 4 is a schematic view of an apparatus for manufacturing a heat exchanger according to an embodiment.
- FIG. 5 is a flowchart of a surface treatment process according to an embodiment.
- an apparatus for manufacturing the heat exchanger may include at least one bath 200 containing a predetermined compound (solution) 250 so as to dip the heat exchanger 10 in the bath 200 .
- a plurality of baths 200 may be provided.
- the plurality of baths 200 may store solutions 250 different from each other.
- the heat exchanger 10 may be sequentially dipped into the different solutions 250 stored in the baths 200 according to a predetermined process order.
- the refrigerant tube 100 and the at least one heat-exchange fin 110 of the heat exchanger 10 may be dipped into the solution 250 except for the refrigerant introduction 101 and the refrigerant discharge 105 .
- FIG. 5 the process for surface-treating the heat exchanger 10 according to an embodiment will be described.
- the flowchart of FIG. 5 may correspond to steps S 12 to S 14 of FIG. 3 .
- step S 21 the refrigerant tube 100 and the at least one heat-exchange fin 110 may be assembled to form the assembled body, and then the surface treatment process may start.
- the first base-solution treatment process may include a process for dipping the heat exchanger 10 into the bath 200 containing a sodium hydroxide (NaOH) solution for a predetermined period of time.
- the predetermined period of time may be a time of about 20 seconds to about 30 seconds, for example, and the sodium hydroxide (NaOH) solution may have a concentration of about 0.5 mol and be under room temperature, for example.
- the acid-solution treatment process may include a process for dipping the heat exchanger 10 into a bath 200 containing a hydrochloric acid (HCL) solution for a predetermined period of time.
- the predetermined period of time may be a time of about 60 seconds to about 90 seconds, for example, and the hydrochloric acid (HCL) solution may have a concentration of about 1 mol and a temperature of about 70 to about 90° C., for example.
- step S 23 when the acid-solution treatment process is completed, the first tube treatment 130 may be formed on the refrigerant tube 100 , and the first fin treatment 140 may be formed on the at least one heat-exchange fin 110 .
- the second base-solution treatment process may include a process for dipping the heat exchanger 10 into a bath 200 containing a sodium hydroxide (NaOH) solution for a predetermined period of time.
- NaOH sodium hydroxide
- the predetermined period of time may be a time of about 3 seconds to about 5 seconds, for example, and the sodium hydroxide (NaOH) solution may have a concentration of about 0.5 mol and under room temperature, for example. That is, in step S 24 , the second base-solution treatment process may take a time less than a time of the first base-solution treatment process.
- NaOH sodium hydroxide
- the deionized-water may be water which is substantially pure water from which mineral slats in water, for example, positive ions such as sodium (Na), or calcium (Ca), and negative ions such as chloride ions or sulfate ions are removed.
- positive ions such as sodium (Na), or calcium (Ca)
- negative ions such as chloride ions or sulfate ions are removed.
- the heat exchanger 10 treated with the base-solution and the acid-solution may be cleaned by performing the deionized-water treatment process.
- the deionized-water treatment process may be called a cleaning process.
- step S 25 when the deionized-water treatment process is completed, the second tube treatment 135 may be formed on the refrigerant tube 100 , and the second fin treatment 145 may be formed on the heat-exchange fin 110 .
- a first drying process may be performed, in step S 26 .
- An oven may be provided as a dryer to perform the first drying process.
- the heat exchanger 10 may be inserted into the oven, and then the first drying process may be performed for a predetermined period of time at a temperature of about 100° C. to 120° C., for example.
- the predetermined period of time may be about 5 minutes to about 10 minutes, for example.
- the fluorinate-based compound treatment process may be performed.
- the fluorinate-based compound treatment process may include a process for dipping the heat exchanger 10 into a solution in which (heptadeca-fluoro-1,1,2,2-tetra-hydrodecyl) trichlorosilane (HDFS) is mixed with n-hexane at a ratio of about 1:1000.
- HDFS heptadeca-fluoro-1,1,2,2-tetra-hydrodecyl trichlorosilane
- a second drying process may be performed, in step S 28 .
- An oven may be provided as a dryer to perform the second drying process.
- the heat exchanger 10 may be inserted into the oven, and then the second drying process may be performed for a predetermined period of time at a temperature of about 100° C. to 120° C.
- the predetermined period of time may be about 5 minutes to about 10 minutes, for example.
- step S 28 when the second drying process is completed, a third tube treatment 138 may be formed on the refrigerant tube 100 , and a third fin treatment 148 may be formed on the at least one heat-exchange fin 110 .
- step S 29 after the second drying process is performed, a cleaning process may be performed.
- the surface treatment process may be performed to form the first, second, and third tube treatments 130 , 135 , and 138 on the refrigerant tube 100 , and the first, second, and third fin treatments 140 , 145 , and 148 on the at least one heat-exchange fin 110 .
- the unevenness, the metal nano-layer, and the hydrophobic high-molecular layer may be formed on the refrigerant tube 100 and the at least one heat-exchange fin 110 , the refrigerant tube 100 and the at least one heat-exchange fin 110 may have super-water-repellant surfaces.
- the surfaces of the refrigerant tube 100 and the at least one heat-exchange fin 110 may have super-water-repellant characteristics to bounce the water even though the heat exchanger 10 is touched by the water, a contact angle between the surface and the water may increase and a contact surface between the surface and the water may decrease.
- the contact angle may be about 150° or more.
- the possibility of the formation of frost on the surface of the heat exchanger 10 may be low or reduced, and even when frost is formed on the surface of the heat exchanger 10 , the frost may be easily removed from the surface of the heat exchanger 10 .
- FIG. 6 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment.
- an apparatus for manufacturing the heat exchanger according to this embodiment may include a bath 200 in which a solution 250 for dipping may be stored, and a reaction inducing device 300 coupled to the bath 200 to induce a surface treatment reaction between the heat exchanger 10 and the solution 250 .
- the reaction inducing device 300 may include a drive 310 that generates a drive force, a connection shaft 320 that extends from the drive 310 , and a rotatable element coupled to the connection shaft 320 .
- the drive 310 may be a motor
- the connection shaft 320 may be a drive or motor shaft.
- the motor shaft may be rotated in a predetermined direction.
- the rotatable element 330 may include one or more blades that rotate together with the motor shaft in a predetermined direction.
- FIG. 7 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment.
- an apparatus for manufacturing the heat exchanger according to this embodiment may include a bath 200 in which a solution 250 may be stored and a reaction inducing device 400 disposed at at least one surface of the bath 200 .
- the reaction inducing device 400 may include “ultrasonic wave generators” for generating ultrasonic waves.
- the ultrasonic wave generators may be provided on opposite surfaces of the bath 200 , for example.
- the reaction induction device 400 may include a vibrator 410 that generates vibration when a predetermined input signal is applied to output ultrasonic waves.
- the vibrator 410 may be coupled to the bath 200 so that the vibrator 410 is exposed to the solution 250 in the bath 200 .
- the ultrasonic waves generated through the vibrator 410 may be transmitted into the solution 250 .
- the ultrasonic waves may have a function to accelerate oxidation or reduction reaction.
- the reaction inducing device 400 when the reaction inducing device 400 is operated to transmit the ultrasonic waves toward the solution 250 , the heat exchanger 10 and the solution 250 may quickly react with each other (reaction acceleration phenomenon). Thus, a process time for surface-treating the heat exchanger 10 may be reduced.
- predetermined structures are applied onto surfaces of the heat exchanger, that is, surfaces of the refrigerant tube and the at least one heat-exchange fin, to allow the surfaces of the heat exchanger to have super-water-repellant characteristics, and thus, freezing on the surfaces of the heat exchanger may be relatively reduced, and also, frost formed on surfaces of the heat exchanger may be easily removed. Also, as the completely assembled heat exchanger may be dipped into the bath and then surface-treated, the surface treatment process on the refrigerant tube and the at least one heat-exchange fin may be simply performed at once.
- the reaction inducing device may be disposed in the bath in which the solution for surface-treating is contained, the heat exchanger may quickly react with chemical materials.
- the heat exchanger may be reduced in weight and manufacturing cost.
- Embodiments provide a heat exchanger that is capable of preventing frost from forming on a surface of the heat exchanger and improving defrost performance, and a method and apparatus for manufacturing the heat exchanger.
- Embodiments disclosed herein provide a heat exchanger that may include a refrigerant tube, through which a refrigerant may flow; a heat-exchange fin, into which the refrigerant tube may be inserted; a plurality of tube treatment parts or treatments laminated on a surface of the refrigerant tube; and a plurality of fin treatment parts or treatments laminated on a surface of the heat-exchange fin.
- the plurality of tube treatment parts may include a first tube treatment part or treatment formed by processing the surface of the refrigerant tube.
- the first tube treatment part may include a fine unevenness formed in a micrometer ( ⁇ m) unit, and a second tube treatment part or treatment formed by processing the surface of the first tube treatment part.
- the second tube treatment part may include a metal layer formed in a nanometer (nm) unit.
- the first tube treatment part may be formed through one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid (base) etching method, for example.
- the metal layer of the second tube treatment part may be formed by an acid or base treatment process, for example.
- the plurality of tube treatment parts may include a third tube treatment part or treatment formed by processing a surface of the second tube treatment part.
- the third tube treatment part may include a hydrophobic high-molecular layer, for example.
- the hydrophobic high-molecular layer of the third tube treatment part may be coated with a fluorinate-based compound, for example.
- the plurality of fin treatment parts may include a first fin treatment part formed by processing a surface of the heat-exchange fin, the first fin treatment part including a fine unevenness formed in a micrometer ( ⁇ m) unit, and a second fin treatment part formed by processing a surface of the first fin treatment part.
- the second fin treatment part may include a metal layer formed in a nanometer (nm), for example.
- the plurality of fin treatment parts may include a third fin treatment part formed by processing the surface of the second fin treatment part.
- the third fin treatment part may include a hydrophobic high-molecular layer, for example.
- Each of the refrigerant tube and the heat-exchange fin may be formed of an aluminum material, for example.
- Embodiments disclosed herein further provide a method for manufacturing a heat exchanger that may include assembling a refrigerant tube with at least one heat-exchange fin to form an assembled body; processing a fine unevenness on a surface of the assembled body; forming a metal nano-layer on a surface of the fine unevenness; and forming a hydrophobic high-molecular layer on a surface of the metal nano-layer.
- the processing of the fine unevenness on the surface of the assembled body may be performed by using one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid (base) etching method, for example.
- the processing of the fine unevenness on the surface of the assembled body may include dipping the assembled body into a first base solution, and dipping the assembled body into an acid solution.
- the forming of the metal nano-layer on the surface of the fine unevenness may include dipping the assembled body into a second base solution, and dipping the assembled body into deionized-water. A time taken for dipping the assembled body into the second base solution may be longer than a time taken for dipping the assembled body into the first base solution.
- the forming of the hydrophobic high-molecular layer on the surface of the metal nano-layer may include performing a first drying process on the assembled body; treating the assembled body by using a fluorinate-based compound; and performing a second drying process on the assembled body.
- Embodiment disclosed herein further provide an apparatus for manufacturing a heat exchanger that may include at least one bath in which a solution may be stored to dip an assembled body of a refrigerant tube and at least one heat-exchange fin; and a reaction inducing device disposed at at least one side of the bath to induce reaction between the assembled body and the solution.
- the reaction inducing device may include a driving part or drive that generates a driving force, and a rotation part disposed rotatable according to the driving of the driving part.
- the reaction inducing device may include a vibrator coupled to the bath to generate ultrasonic waves due to vibration.
- any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc. means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention.
- the appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment.
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Abstract
A heat exchanger and a method and apparatus for manufacturing the same are provided. The heat exchanger may include a refrigerant tube, through which a refrigerant may flow, at least one heat-exchange fin, into which the refrigerant tube may be inserted, a plurality of tube treatments provided on a surface of the refrigerant tube, and a plurality of fin treatments provided on a surface of the at least one heat-exchange fin.
Description
- The present application claims priority under 35 U.S.C. 119 and 35 U.S.C. 365 to Korean Patent Application No. 10-2013-0086584, filed in Korea on Jul. 23, 2013, which is hereby incorporated by reference in its entirety.
- 1. Field
- A heat exchanger and a method and apparatus for manufacturing the same are disclosed herein.
- 2. Background
- A heat exchanger may be one component of a refrigeration cycle. The heat exchanger may be used in electric appliances, such as refrigerators or air conditioners in which the refrigeration cycle is performed.
- The heat exchanger may include a refrigerant tube through which a refrigerant may flow and a heat-exchange fin coupled to the refrigerant tube to allow the refrigerant to be heat-exchanged with external air. The heat-exchange fin may be coupled to the refrigerant tube to increase a heat-exchange area in which the refrigerant is heat-exchanged with the air.
- The heat exchanger may function as a condenser or an evaporator. When a heat exchanger functions as a condenser, a high-pressure refrigerant compressed by a compressor may flow through the refrigerant tube to heat-exchange (heat dissipation) with air and then be condensed. On the other hand, when a heat exchanger functions as an evaporator, a low-pressure refrigerant may flow through the refrigerant tube to heat-exchange (heat adsorption) with air and then be evaporated.
- When a heat exchanger functions as an evaporator of a refrigerator, the heat exchanger may be exposed to a low-temperature environment of a storage compartment of the refrigerator to heat-exchange with cool air of the storage compartment. That is, the refrigerant tube of the heat exchanger may have a temperature less than a temperature of the cool air of the storage compartment, and thus, condensate water may be generated due to a temperature difference between the refrigerant tube (or the heat exchange fin) and the cool air.
- The condensate water may freeze forming frost on a surface of the heat exchanger, that is, surfaces of the refrigerant tube and heat-exchange fin (frost formation), thereby disturbing heat exchange action between the refrigerant tube and the cool air. Therefore, it is important to prevent frost from being formed on the surface of the heat exchanger so as to improve efficiency of the heat exchanger.
- However, in the case of the related art heat exchanger, as the refrigerant tube or the heat-exchange fin is not separately surface-treated, frost may form on the refrigerant tube or the heat-exchanger, and thus, it takes a lot of time to remove the frost formed on the heat exchanger.
- To solve this limitation, the present applicant has filed a patent for applying a porous material onto a heat exchanger, Korean Application No. 10-2006-0000742. However, according to the technology for applying the porous material, the formation of the frost on the heat exchanger may be prevented somewhat, but the effect is insignificant.
- Embodiments will be described in detail with reference to the following drawings in which like reference numerals refer to like elements, and wherein:
-
FIG. 1 is a schematic view of a heat exchanger according to an embodiment; -
FIG. 2 is a cross-sectional view taken along line II-II′ ofFIG. 1 ; -
FIG. 3 is a flowchart of a method for manufacturing a heat exchanger according to an embodiment; -
FIG. 4 is a schematic view of an apparatus for manufacturing a heat exchanger according to an embodiment; -
FIG. 5 is a flowchart of a surface treatment process according to an embodiment; -
FIG. 6 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment; and -
FIG. 7 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment. - Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. Embodiments may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, alternate embodiments included in other retrogressive inventions or falling within the spirit and scope of the embodiments will fully convey the concept of the embodiments to those skilled in the art.
-
FIG. 1 is a view of a schematic heat exchanger according to an embodiment.FIG. 2 is a cross-sectional view taken along line II-II′ ofFIG. 1 . - Referring to
FIGS. 1 and 2 , aheat exchanger 10 according to this embodiment may include arefrigerant tube 100, through which a refrigerant may flow, and at least one heat-exchange fin 110 coupled to therefrigerant tube 100. The at least one heat-exchange fin 110 may include a plurality of heat-exchange fins 110. Therefrigerant tube 100 may be arranged in a plurality of rows and be coupled to the plurality of the heat-exchange fins 110. - A through
hole 115, through which therefrigerant tube 100 may pass, may be formed in each of the plurality of heat-exchange fins 110. Therefrigerant tube 100 may be disposed to pass through the plurality of heat-exchange fins 110 through the throughholes 115. The refrigerant flowing through therefrigerant tube 100 may be heat-exchanged with air flowing between the plurality of heat-exchange fins 110. - The
refrigerant tube 100 may include arefrigerant introduction 101, through which the refrigerant may be introduced, and arefrigerant discharge 105, through which the refrigerant may be discharged. The refrigerant introduced through therefrigerant introduction 101 may be heat-exchanged with the air and then be discharged from theheat exchanger 10 through therefrigerant discharge 105. - The
heat exchanger 10 may include at least onecoupling plate 120 that supports therefrigerant tube 100, and at least onereturn band 108 coupled to the at least onecoupling plate 120 to turn a flow direction of the refrigerant of therefrigerant tube 100. For example, thereturn band 108 may have a U-shape, at least one portion of which may be curved. - The at least one
coupling plate 120 may include acoupling plate 120 disposed at both sides or ends of therefrigerant tube 100 to support therefrigerant tube 100. Also, one portion ofrefrigerant tube 100 may be coupled to a first end of thereturn band 108, and another portion of therefrigerant tube 100 may be coupled to a second end of thereturn band 108. - The
refrigerant tube 100 and the heat-exchange fin 110 may be formed of aluminum materials, respectively. As therefrigerant tube 100 and the heat-exchange fin 110 may be formed of the aluminum materials, theheat exchanger 10 may be reduced in weight and manufacturing cost. - The
refrigerant tube 100 and the heat-exchange fin 110 may be surface-treated through a predetermined processing process. The processing process may be performed at one time in a state in which therefrigerant tube 100 and the heat-exchange fin 110 are coupled to each other. - Surface surface-treatments having the same structure may be disposed on the
refrigerant tube 100 and the heat-exchange fin 110, respectively. In detail, afirst tube treatment 130 may be disposed on therefrigerant tube 100. Thefirst tube treatment 130 may include a fine unevenness formed by performing physical or chemical treatment on the surface of therefrigerant tube 100. For example, the fine unevenness of thefirst tube treatment 130 may have a structure in which a protrusion and a recess are repeatedly formed. - The fine unevenness of the
first tube treatment 130 may have a size in micrometer (μm) unit. Herein, the term micrometer (μm) unit may be understood as a size ranging from about 1 μm to about 1000 μm. - A
first fin treatment 140 may be disposed on the heat-exchange fin 110. Thefirst fin treatment 140 may include a fine unevenness formed by performing physical or chemical treatment on the surface of the heat-exchange fin 110. For example, the fine unevenness of thefirst fin treatment 140 may have a structure in which a protrusion and a recess are repeatedly formed. The fine unevenness of thefirst fin treatment 140 may have a size in micrometer (μm) unit. - A
second tube treatment 135 may be disposed on a surface of thefirst treatment 130. Thesecond tube treatment 135 may include a surface layer formed through an acid or base treatment process, for example. The surface layer may have a size in nanometer (nm) unit. Herein, the term “nanometer (nm) unit” may be understood as a size ranging from about 1 nm to about 1000 nm. The surface layer of thesecond tube treatment 135 may have a flake shape that protrudes from the surface of thefirst tube treatment 130 and be called a “metal nano-layer”. - A
second fin treatment 145 may be disposed on a surface of thefirst fin treatment 140. Thesecond fin treatment 145 may include a surface layer formed through an acid or base treatment process, for example. The surface layer of thesecond fin treatment 145 may have a flake shape that protrudes from the surface of thefirst fin treatment 140 and have a size in nanometer (nm) unit. - A
third tube treatment 138 may be disposed on the surface of thesecond treatment 135. Thethird tube treatment 138 may include a hydrophobic high-molecular layer formed through a coating process, for example. The hydrophobic high-molecular layer of the third tube treatment 38 may include a fluorinate-based compound and have a thickness in nanometer (nm), for example, a thickness of about 1 nm to about 5 nm. - A
third fin treatment 148 may be disposed on the surface of thesecond fin treatment 145. Thethird fin treatment 148 may include a hydrophobic high-molecular layer formed through a coating process, for example. The hydrophobic high-molecular layer of thethird fin treatment 148 may include a fluorinate-based compound and have a thickness in nanometer (nm), for example, a thickness of about 1 nm to about 5 nm. - Due to the first, second, and
third tube treatments refrigerant tube 100. Also, due to the first, second, andthird fin treatments exchange fin 110. - Hereinafter, a method for manufacturing the heat exchanger according to embodiments will be discussed.
-
FIG. 3 is a flowchart of a method for manufacturing a heat exchanger according to an embodiment. Referring toFIG. 3 , therefrigerant tube 100 may be assembled with the at least one heat-exchange fin 110 to form an assembled body, in step S11. In step S11, the term “assembled body” may be understood as an assembly in which therefrigerant tube 100 and the at least one heat-exchange fin 100 are not yet surface-treated. - A fine unevenness may be processed on a surface of the assembled body, in step S12. The fine unevenness may include a
first tube treatment 130 and afirst fin treatment 140. The fine roughness may be formed through one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid (base) etching method, for example. - The sand blast method may be a method in which fine sand particles are sprayed by compressed air to physically collide with the surfaces of the
refrigerant tube 100 and the at least one heat-exchange fin 110, thereby forming a fine roughness. The sand paper method may be a method in which the surfaces of therefrigerant tube 100 and the at least one heat-exchange fin 110 are rubbed with a sand paper. The shot blast method may be a process in which fine particles of a metal or non-metal, such as a shut or grit, are sprayed onto the surfaces of therefrigerant tube 100 and the at least one heat-exchange fin 110. - The plasma etching method may be a dry etching process using gas plasma. Also, the acid (base) etching method may be a wet etching process using an acid solution or a base solution as an etchant. The etchant may be a fluorinate acid-diluted solution, a nitric acid-diluted solution, a phosphoric acid-diluted solution, an acetic acid-diluted solution, a hydrochloric acid-diluted, a sulfuric acid-diluted solution, or a mixture thereof.
- The discharge treatment method may be a method in which the surfaces of the
refrigerant tube 100 and the at least one heat-exchange fin 110 are melted using high-temperature heat generated by electrical discharge and then re-coagulated. The laser treatment method may be a method in which a high power laser pulse is incident into therefrigerant tube 100 and the at least one heat-exchange fin 110 to allow the surfaces of therefrigerant tube 100 and the at least one heat-exchange fin 110 to wear. - After the fine unevenness is processed on the assembled body, a process for forming a metal nano-layer may be performed on a surface of the fine unevenness, in step S13. The metal nano-layer may include a
second tube treatment 135 and asecond fin treatment 145. - In detail, the process for forming the metal nano-layer may include an acid or base treatment process, for example. In step S13, the acid or base treatment process may include a process for dipping the
heat exchanger 10 into a bath in which a predetermined acid or base solution may be stored. - After the metal nano-layer is formed, a process for forming the hydrophobic high-molecular layer may be performed on the metal nano-layer, in step S14. In detail, in step S14, the process for forming the hydrophobic high-molecular layer may include a process for coating with a fluorinate-based compound and a drying process, for example.
- The surface treatment process will be described in detail with reference to
FIG. 5 . -
FIG. 4 is a schematic view of an apparatus for manufacturing a heat exchanger according to an embodiment.FIG. 5 is a flowchart of a surface treatment process according to an embodiment. - Referring to
FIG. 4 , an apparatus for manufacturing the heat exchanger according to an embodiment may include at least onebath 200 containing a predetermined compound (solution) 250 so as to dip theheat exchanger 10 in thebath 200. - Alternatively, a plurality of
baths 200 may be provided. The plurality ofbaths 200 may storesolutions 250 different from each other. Theheat exchanger 10 may be sequentially dipped into thedifferent solutions 250 stored in thebaths 200 according to a predetermined process order. - Here, the
refrigerant tube 100 and the at least one heat-exchange fin 110 of theheat exchanger 10 may be dipped into thesolution 250 except for therefrigerant introduction 101 and therefrigerant discharge 105. - Referring to
FIG. 5 , the process for surface-treating theheat exchanger 10 according to an embodiment will be described. The flowchart ofFIG. 5 may correspond to steps S12 to S14 ofFIG. 3 . - In step S21, the
refrigerant tube 100 and the at least one heat-exchange fin 110 may be assembled to form the assembled body, and then the surface treatment process may start. - When the surface treatment process starts, a first base-solution treatment process may be performed. The first base-solution treatment process may include a process for dipping the
heat exchanger 10 into thebath 200 containing a sodium hydroxide (NaOH) solution for a predetermined period of time. In step S22, the predetermined period of time may be a time of about 20 seconds to about 30 seconds, for example, and the sodium hydroxide (NaOH) solution may have a concentration of about 0.5 mol and be under room temperature, for example. - After the first base-solution treatment process is performed, an acid-solution treatment process may be performed. The acid-solution treatment process may include a process for dipping the
heat exchanger 10 into abath 200 containing a hydrochloric acid (HCL) solution for a predetermined period of time. The predetermined period of time may be a time of about 60 seconds to about 90 seconds, for example, and the hydrochloric acid (HCL) solution may have a concentration of about 1 mol and a temperature of about 70 to about 90° C., for example. - In step S23, when the acid-solution treatment process is completed, the
first tube treatment 130 may be formed on therefrigerant tube 100, and thefirst fin treatment 140 may be formed on the at least one heat-exchange fin 110. - After the acid-solution treatment process is performed, a second base-solution treatment process may be performed. The second base-solution treatment process may include a process for dipping the
heat exchanger 10 into abath 200 containing a sodium hydroxide (NaOH) solution for a predetermined period of time. - The predetermined period of time may be a time of about 3 seconds to about 5 seconds, for example, and the sodium hydroxide (NaOH) solution may have a concentration of about 0.5 mol and under room temperature, for example. That is, in step S24, the second base-solution treatment process may take a time less than a time of the first base-solution treatment process.
- After the second base-solution treatment process is performed, a deionized-water treatment process may be performed. The deionized-water may be water which is substantially pure water from which mineral slats in water, for example, positive ions such as sodium (Na), or calcium (Ca), and negative ions such as chloride ions or sulfate ions are removed.
- The
heat exchanger 10 treated with the base-solution and the acid-solution may be cleaned by performing the deionized-water treatment process. Thus, the deionized-water treatment process may be called a cleaning process. - In step S25, when the deionized-water treatment process is completed, the
second tube treatment 135 may be formed on therefrigerant tube 100, and thesecond fin treatment 145 may be formed on the heat-exchange fin 110. - After the deionized-water treatment process is performed, a first drying process may be performed, in step S26. An oven may be provided as a dryer to perform the first drying process. The
heat exchanger 10 may be inserted into the oven, and then the first drying process may be performed for a predetermined period of time at a temperature of about 100° C. to 120° C., for example. In step S26, the predetermined period of time may be about 5 minutes to about 10 minutes, for example. - After the first drying process is performed, the fluorinate-based compound treatment process may be performed. In step S27, the fluorinate-based compound treatment process may include a process for dipping the
heat exchanger 10 into a solution in which (heptadeca-fluoro-1,1,2,2-tetra-hydrodecyl) trichlorosilane (HDFS) is mixed with n-hexane at a ratio of about 1:1000. - After the fluorinate-based compound treatment process is performed, a second drying process may be performed, in step S28. An oven may be provided as a dryer to perform the second drying process. The
heat exchanger 10 may be inserted into the oven, and then the second drying process may be performed for a predetermined period of time at a temperature of about 100° C. to 120° C. The predetermined period of time may be about 5 minutes to about 10 minutes, for example. - In step S28, when the second drying process is completed, a
third tube treatment 138 may be formed on therefrigerant tube 100, and athird fin treatment 148 may be formed on the at least one heat-exchange fin 110. In step S29, after the second drying process is performed, a cleaning process may be performed. - The surface treatment process may be performed to form the first, second, and
third tube treatments refrigerant tube 100, and the first, second, andthird fin treatments exchange fin 110. In summary, as the unevenness, the metal nano-layer, and the hydrophobic high-molecular layer may be formed on therefrigerant tube 100 and the at least one heat-exchange fin 110, therefrigerant tube 100 and the at least one heat-exchange fin 110 may have super-water-repellant surfaces. As the surfaces of therefrigerant tube 100 and the at least one heat-exchange fin 110 may have super-water-repellant characteristics to bounce the water even though theheat exchanger 10 is touched by the water, a contact angle between the surface and the water may increase and a contact surface between the surface and the water may decrease. For example, the contact angle may be about 150° or more. - Thus, as the condensate water formed on the surface of the
heat exchanger 10 may easily flow downward, the possibility of the formation of frost on the surface of theheat exchanger 10 may be low or reduced, and even when frost is formed on the surface of theheat exchanger 10, the frost may be easily removed from the surface of theheat exchanger 10. - Hereinafter, additional embodiments will be described. As the additional embodiments are different from the previous embodiment in the apparatus for manufacturing the heat exchanger, different points therebetween will be mainly described herein, and the same parts as those described according to the previous embodiment will be denoted by the descriptions and reference numerals according to the previous embodiment.
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FIG. 6 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment. Referring toFIG. 6 , an apparatus for manufacturing the heat exchanger according to this embodiment may include abath 200 in which asolution 250 for dipping may be stored, and areaction inducing device 300 coupled to thebath 200 to induce a surface treatment reaction between theheat exchanger 10 and thesolution 250. - In detail, the
reaction inducing device 300 may include adrive 310 that generates a drive force, aconnection shaft 320 that extends from thedrive 310, and a rotatable element coupled to theconnection shaft 320. - For example, the
drive 310 may be a motor, and theconnection shaft 320 may be a drive or motor shaft. When the motor is driven, the motor shaft may be rotated in a predetermined direction. Also, therotatable element 330 may include one or more blades that rotate together with the motor shaft in a predetermined direction. - When the
rotatable element 330 is rotated, a rotation force may be applied to thesolution 250, and thus, thesolution 250 may move. According to the movement of thesolution 250, theheat exchanger 10 and thesolution 250 may quickly react with each other (reaction acceleration phenomenon). Thus, a process time for surface-treating theheat exchanger 10 may be reduced. -
FIG. 7 is a schematic view of an apparatus for manufacturing a heat exchanger according to another embodiment. Referring toFIG. 7 , an apparatus for manufacturing the heat exchanger according to this embodiment may include abath 200 in which asolution 250 may be stored and areaction inducing device 400 disposed at at least one surface of thebath 200. For example, thereaction inducing device 400 may include “ultrasonic wave generators” for generating ultrasonic waves. The ultrasonic wave generators may be provided on opposite surfaces of thebath 200, for example. - In detail, the
reaction induction device 400 may include avibrator 410 that generates vibration when a predetermined input signal is applied to output ultrasonic waves. Thevibrator 410 may be coupled to thebath 200 so that thevibrator 410 is exposed to thesolution 250 in thebath 200. - The ultrasonic waves generated through the
vibrator 410 may be transmitted into thesolution 250. The ultrasonic waves may have a function to accelerate oxidation or reduction reaction. - That is, when the
reaction inducing device 400 is operated to transmit the ultrasonic waves toward thesolution 250, theheat exchanger 10 and thesolution 250 may quickly react with each other (reaction acceleration phenomenon). Thus, a process time for surface-treating theheat exchanger 10 may be reduced. - According to embodiments, predetermined structures are applied onto surfaces of the heat exchanger, that is, surfaces of the refrigerant tube and the at least one heat-exchange fin, to allow the surfaces of the heat exchanger to have super-water-repellant characteristics, and thus, freezing on the surfaces of the heat exchanger may be relatively reduced, and also, frost formed on surfaces of the heat exchanger may be easily removed. Also, as the completely assembled heat exchanger may be dipped into the bath and then surface-treated, the surface treatment process on the refrigerant tube and the at least one heat-exchange fin may be simply performed at once.
- Also, as the reaction inducing device may be disposed in the bath in which the solution for surface-treating is contained, the heat exchanger may quickly react with chemical materials. Also, as each of the refrigerant tube and the at least one heat-exchange fin which constitute the heat exchanger may be formed of an aluminum material, the heat exchanger may be reduced in weight and manufacturing cost.
- Embodiments provide a heat exchanger that is capable of preventing frost from forming on a surface of the heat exchanger and improving defrost performance, and a method and apparatus for manufacturing the heat exchanger.
- Embodiments disclosed herein provide a heat exchanger that may include a refrigerant tube, through which a refrigerant may flow; a heat-exchange fin, into which the refrigerant tube may be inserted; a plurality of tube treatment parts or treatments laminated on a surface of the refrigerant tube; and a plurality of fin treatment parts or treatments laminated on a surface of the heat-exchange fin. The plurality of tube treatment parts may include a first tube treatment part or treatment formed by processing the surface of the refrigerant tube. The first tube treatment part may include a fine unevenness formed in a micrometer (μm) unit, and a second tube treatment part or treatment formed by processing the surface of the first tube treatment part. The second tube treatment part may include a metal layer formed in a nanometer (nm) unit.
- The first tube treatment part may be formed through one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid (base) etching method, for example. The metal layer of the second tube treatment part may be formed by an acid or base treatment process, for example.
- The plurality of tube treatment parts may include a third tube treatment part or treatment formed by processing a surface of the second tube treatment part. The third tube treatment part may include a hydrophobic high-molecular layer, for example. The hydrophobic high-molecular layer of the third tube treatment part may be coated with a fluorinate-based compound, for example.
- The plurality of fin treatment parts may include a first fin treatment part formed by processing a surface of the heat-exchange fin, the first fin treatment part including a fine unevenness formed in a micrometer (μm) unit, and a second fin treatment part formed by processing a surface of the first fin treatment part. The second fin treatment part may include a metal layer formed in a nanometer (nm), for example.
- The plurality of fin treatment parts may include a third fin treatment part formed by processing the surface of the second fin treatment part. The third fin treatment part may include a hydrophobic high-molecular layer, for example.
- Each of the refrigerant tube and the heat-exchange fin may be formed of an aluminum material, for example.
- Embodiments disclosed herein further provide a method for manufacturing a heat exchanger that may include assembling a refrigerant tube with at least one heat-exchange fin to form an assembled body; processing a fine unevenness on a surface of the assembled body; forming a metal nano-layer on a surface of the fine unevenness; and forming a hydrophobic high-molecular layer on a surface of the metal nano-layer.
- The processing of the fine unevenness on the surface of the assembled body may be performed by using one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid (base) etching method, for example.
- The processing of the fine unevenness on the surface of the assembled body may include dipping the assembled body into a first base solution, and dipping the assembled body into an acid solution. The forming of the metal nano-layer on the surface of the fine unevenness may include dipping the assembled body into a second base solution, and dipping the assembled body into deionized-water. A time taken for dipping the assembled body into the second base solution may be longer than a time taken for dipping the assembled body into the first base solution.
- The forming of the hydrophobic high-molecular layer on the surface of the metal nano-layer may include performing a first drying process on the assembled body; treating the assembled body by using a fluorinate-based compound; and performing a second drying process on the assembled body.
- Embodiment disclosed herein further provide an apparatus for manufacturing a heat exchanger that may include at least one bath in which a solution may be stored to dip an assembled body of a refrigerant tube and at least one heat-exchange fin; and a reaction inducing device disposed at at least one side of the bath to induce reaction between the assembled body and the solution. The reaction inducing device may include a driving part or drive that generates a driving force, and a rotation part disposed rotatable according to the driving of the driving part.
- The reaction inducing device may include a vibrator coupled to the bath to generate ultrasonic waves due to vibration.
- Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.
- Any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments.
- Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.
Claims (24)
1. A heat exchanger, comprising:
a refrigerant tube through which a refrigerant flows;
at least one heat-exchange fin, into which the refrigerant tube is inserted;
a plurality of tube treatments provided on a surface of the refrigerant tube; and
a plurality of fin treatments provided on a surface of the at least one heat-exchange fin.
2. The heat exchanger according to claim 1 , wherein the plurality of tube treatments comprises:
a first tube treatment provided on the surface of the refrigerant tube, the first tube treatment comprising a fine unevenness formed in a micrometer (μm) unit; and
a second tube treatment provided on a surface of the first tube treatment, the second tube treatment comprising a metal layer formed in a nanometer (nm) unit.
3. The heat exchanger according to claim 2 , wherein the first tube treatment is formed through one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid (base) etching method.
4. The heat exchanger according to claim 2 , wherein the metal layer of the second tube treatment is formed by an acid or base treatment process.
5. The heat exchanger according to claim 2 , wherein the plurality of tube treatments further comprises a third tube treatment provided on a surface of the second tube treatment, the third tube treatment comprising a hydrophobic high-molecular layer.
6. The heat exchanger according to claim 5 , wherein the hydrophobic high-molecular layer of the third tube treatment is coated with a fluorinate-based compound.
7. The heat exchanger according to claim 1 , wherein the plurality of fin treatments comprises:
a first fin treatment provided on the surface of the at least one heat-exchange fin, the first fin treatment comprising a fine unevenness formed in a micrometer (μm) unit; and
a second fin treatment provided on a surface of the first fin treatment, the second fin treatment comprising a metal layer formed in a nanometer (nm) unit.
8. The heat exchanger according to claim 7 , wherein the plurality of fin treatments further comprises a third fin treatment provided on a surface of the second fin treatment, the third fin treatment comprising a hydrophobic high-molecular layer.
9. The heat exchanger according to claim 1 , wherein each of the refrigerant tube and the at least one heat-exchange fin is formed of an aluminum material.
10. The heat exchanger according to claim 1 , wherein the at least one heat-exchange fin comprises a plurality of heat-exchange fins, each of the plurality of heat-exchange fins having a through hole, through which the refrigerant tube passes.
11. A method for manufacturing a heat exchanger, the method comprising:
assembling a refrigerant tube with at least one heat-exchange fin to form an assembled body;
processing a fine unevenness on a surface of the assembled body; and
forming a metal nano-layer on a surface of the fine unevenness.
12. The method according to claim 11 , wherein the at least one heat-exchange fin comprises a plurality of heat-exchange fins, each of the plurality of heat-exchange fins having a through hole, through which the refrigerant tube passes.
13. The method according to claim 11 , wherein the method further comprises:
forming a hydrophobic high-molecular layer on a surface of the metal nano-layer.
14. The method according to claim 13 , wherein the processing of the fine unevenness on the surface of the assembled body is performed using one of a sand blast method, a sand paper method, a shot blast method, a plasma etching method, a discharge treatment method, a laser treatment method, or an acid or base etching method.
15. The method according to claim 14 , wherein the processing of the fine unevenness on the surface of the assembled body comprises:
dipping the assembled body into a first base solution; and
dipping the assembled body into an acid solution.
16. The method according to claim 13 , wherein the forming of the metal nano-layer on the surface of the fine unevenness comprises:
dipping the assembled body into a second base solution; and
dipping the assembled body into deionized-water.
17. The method according to claim 16 , wherein a time taken for dipping the assembled body into the second base solution is longer than a time taken for dipping the assembled body into the first base solution.
18. The method according to claim 13 , wherein the forming of the hydrophobic high-molecular layer on the surface of the metal nano-layer comprises:
performing a first drying process on the assembled body;
treating the assembled body using a fluorinate-based compound; and
performing a second drying process on the assembled body.
19. The method according to claim 11 , wherein the method further comprises:
performing a cleaning process on the assembled body.
20. An apparatus for manufacturing a heat exchanger, the apparatus comprising:
at least one bath in which a solution is stored to dip an assembled body of a refrigerant tube and at least one heat-exchange fin; and
a reaction inducing device disposed at at least one side of the at ea one bath to induce a reaction between the assembled body and the solution.
21. The apparatus according to claim 20 , wherein the reaction inducing device comprises:
a drive that generates a drive force; and
a blade rotated by the drive force of the drive.
22. The apparatus according to claim 20 , wherein the reaction inducing device comprises at least one vibrator coupled to the at least one bath to generate ultrasonic waves due to vibration.
23. The apparatus according to claim 20 , wherein the at least bath comprises a plurality of baths, each having a different solution.
24. The apparatus according to claim 20 , wherein the at least one heat-exchange fin comprises a plurality of heat-exchange fins, each of the plurality of heat-exchange fins having a through hole, through which the refrigerant tube passes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2013-0086584 | 2013-07-23 | ||
KR1020130086584A KR102094529B1 (en) | 2013-07-23 | 2013-07-23 | An heat exchanger, a manufacturing mehtod and a manufacturing device the same |
Publications (1)
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US20150027678A1 true US20150027678A1 (en) | 2015-01-29 |
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Family Applications (1)
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US14/338,528 Abandoned US20150027678A1 (en) | 2013-07-23 | 2014-07-23 | Heat exchanger and method and apparatus for manufacturing the same |
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US (1) | US20150027678A1 (en) |
EP (1) | EP2829835B1 (en) |
KR (1) | KR102094529B1 (en) |
CN (1) | CN104344608A (en) |
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US20230121635A1 (en) * | 2021-10-14 | 2023-04-20 | Amulaire Thermal Technology, Inc. | Immersion heat dissipation structure having macroscopic fin structure and immersion heat dissipation structure having fin structure |
US11976856B2 (en) | 2021-03-19 | 2024-05-07 | Daikin Industries, Ltd. | Shell and plate heat exchanger for water-cooled chiller and water-cooled chiller including the same |
WO2024097161A1 (en) * | 2022-11-02 | 2024-05-10 | Ail Research Inc. | A compressor-driven thermal separation process using diffusion gap distillation and wicking, thermally conductive heat transfer surfaces |
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KR102023994B1 (en) * | 2017-03-17 | 2019-09-23 | 엘지전자 주식회사 | Heat exchanger |
WO2018169245A1 (en) * | 2017-03-17 | 2018-09-20 | 엘지전자 주식회사 | Heat exchanger |
EP3594603B1 (en) * | 2017-03-31 | 2021-12-08 | Daikin Industries, Ltd. | Heat exchanger and air-conditioning device |
CN108332582B (en) * | 2018-01-26 | 2020-09-22 | 南京新奥环保技术有限公司 | Frost-free air-temperature vaporizer |
CN108443990A (en) * | 2018-05-16 | 2018-08-24 | 珠海格力电器股份有限公司 | Outdoor location and air-conditioning for air-conditioning |
KR101962778B1 (en) * | 2018-09-05 | 2019-07-31 | 주식회사 태진중공업 | A super-water-repellent coating method of a cryogenic heat exchanger tube and a cryogenic heat exchanger tube manufactured by the method and an super-water-repellent coating composition |
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Also Published As
Publication number | Publication date |
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KR102094529B1 (en) | 2020-03-30 |
EP2829835A1 (en) | 2015-01-28 |
KR20150011537A (en) | 2015-02-02 |
EP2829835B1 (en) | 2017-05-10 |
CN104344608A (en) | 2015-02-11 |
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