EP3124905B1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP3124905B1
EP3124905B1 EP16182173.1A EP16182173A EP3124905B1 EP 3124905 B1 EP3124905 B1 EP 3124905B1 EP 16182173 A EP16182173 A EP 16182173A EP 3124905 B1 EP3124905 B1 EP 3124905B1
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EP
European Patent Office
Prior art keywords
fin
condensed water
water discharge
flat tube
bent
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.)
Active
Application number
EP16182173.1A
Other languages
German (de)
English (en)
Other versions
EP3124905A1 (fr
Inventor
Eungyul Lee
Seungmo JUNG
Juhyok Kim
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LG Electronics Inc
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LG Electronics Inc
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Publication of EP3124905A1 publication Critical patent/EP3124905A1/fr
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Publication of EP3124905B1 publication Critical patent/EP3124905B1/fr
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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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • 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
    • F28F1/126—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 consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins
    • 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
    • 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
    • F28F1/325—Fins with openings
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • 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
    • F25B39/02—Evaporators
    • 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
    • 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
    • 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
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/22—Safety or protection arrangements; Arrangements for preventing malfunction for draining

Definitions

  • the present invention relates to a heat exchanger, and more particularly, to a heat exchanger which may easily discharge condensed water when it is used as an evaporator.
  • a heat exchanger may be used as a condenser or an evaporator in a refrigeration cycle device, which is comprised of a compressor, a condenser, an expander, and an evaporator.
  • the heat exchanger is installed in, for example, a vehicle or a refrigerator, and performs heat exchange between refrigerant and air.
  • Heat exchangers may be sorted into a fin-tube-type heat exchanger and a micro-channel-type heat exchanger depending on the structure thereof.
  • the fin-tube-type heat exchanger is fabricated using copper, and the micro-channel-type heat exchanger is fabricated using aluminum.
  • the micro-channel-type heat exchanger defines micro flow-paths therein, and therefore, has higher efficiency than the fin-tube-type heat exchanger.
  • the fin-tube-type heat exchanger is easily fabricated by welding fins and tubes
  • the micro-channel-type heat exchanger disadvantageously requires high initial investment costs for fabrication thereof because it is fabricated via brazing after being introduced into a furnace.
  • FIG. 1 is a sectional view illustrating a conventional micro-channel-type heat exchanger.
  • the conventional micro-channel-type heat exchanger includes a plurality of flat tubes 1 having micro flow paths therein, fins 2 located between the respective flat tubes 1 to interconnect the flat tubes 1 in order to conduct heat, and headers 3 and 4 respectively assembled to one side and to the other side of the flat tubes 1.
  • the fins 2 are coupled to flat tubes 1 located at opposite sides thereof.
  • the fins 2 are arranged in a zigzag arrangement in the longitudinal direction of the flat tubes 1.
  • the conventional micro-channel-type heat exchanger has considerably higher heat exchange efficiency between refrigerant and air than the fin-tube-type heat exchanger, but has difficulty in discharging condensed water when it is used as an evaporator.
  • the conventional micro-channel-type heat exchanger problematically causes deterioration in heat exchange efficiency because condensed water, which is generated when the heat exchanger is used as an evaporator, may not be discharged and the condensed water may stagnate and freeze between the fins.
  • a conventional heat exchanger is shown in Korean Patent Registration No. 10-0765557 .
  • EP 2 653 819 A1 discloses a heat exchanger according to the preamble of claim 1.
  • US 2007/251681 A1 relates to a corrugate fin of an evaporator including wave crest portions, wave trough portions, and flat connection portions connecting together the wave crest portions and the wave trough portions.
  • Opposite end portions of a cutout extend to corresponding connection portions located at opposite ends of the wave crest portion and the wave trough portion.
  • a projection projecting inward is formed integrally with end portions of the connection portions, the end portions of the connection portions corresponding to opposite ends of the cutout.
  • the projection extends between the end portions of the connection portions located at the opposite ends of the wave crest portion and the wave trough portion.
  • the projection projects inward in a shape resembling a lying letter V.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a micro-channel-type heat exchanger, which may easily discharge condensed water.
  • the present invention provides a heat exchanger including a plurality of flat tubes formed in a micro-channel form, and a fin located between the flat tubes to conduct heat, wherein the fin includes a first fin portion located between two flat tubes, a first bent portion bent at the first fin portion so as to come into contact with one of the two flat tubes, a second fin portion bent at the first bent portion, the second fin portion being opposite the first fin portion and being located between the two flat tubes, a flow space defined between the first fin portion and the second fin portion, a second bent portion bent at the second fin portion so as to come into contact with a remaining one of the two flat tubes, and a condensed water discharge hole formed by cutting at least one of the first bent portion and the second bent portion and a condensed water discharge fin bent at one of the first bent portion and the second bent portion.
  • the condensed water discharge fin may be bent in the same direction as a direction in which the first fin portion or the second fin portion is formed.
  • Each flat tube may be located so as to come into close contact with the condensed water discharge fin.
  • the condensed water discharge fin and the condensed water discharge hole may be located at an edge of the fin.
  • Two condensed water discharge fins may be formed on opposite sides of the condensed water discharge hole.
  • the two condensed water discharge fins may be arranged so as to face each other.
  • the condensed water discharge fin may include a first condensed water discharge fin formed on the first bent portion and a second condensed water discharge fin formed on the second bent portion, and the first condensed water discharge fin and the second condensed water discharge fin may be bent in opposite directions.
  • the first condensed water discharge fin and the second condensed water discharge fin may be arranged in a line in a vertical direction.
  • the first condensed water discharge fin and the second condensed water discharge fin may be offset in a vertical direction.
  • At least one of the first fin portion and the second fin portion may be provided with a vent for communication of the flow space and an adjacent flow space with each other.
  • the fin portion may further be provided with a louver for forming the vent and guiding air.
  • the at least one of the first fin portion and the second fin portion may further be provided with a first vent and a second vent, and provided with a first-first louver for forming the first vent and a first-second louver for forming the second vent, and the first-first louver and the first-second louver may be formed in opposite directions.
  • a micro-channel-type heat exchanger according to a first example not within the scope of the invention will be described with reference to FIGs. 2 to 6 .
  • the micro-channel-type heat exchanger includes a plurality of flat tubes 10 defining a plurality of flow paths therein, fins 20 arranged between and respectively coupled to the two flat tubes 10 to conduct heat, and a first header (not illustrated) and a second header (not illustrated) assembled to respective ends of the flat tubes 10 to move refrigerant.
  • the refrigerant when refrigerant is supplied to the first header, the refrigerant passes through the flat tubes 10 and moves to the second header. On the other hand, when refrigerant is supplied to the second header, the refrigerant moves to the first header.
  • the first header and the second header have a structure that is well known to those skilled in the art, and thus, a detailed description thereof will be omitted herein.
  • the flat tubes 10 have a flat shape and define multiple flow paths therein.
  • the flat tubes 10 are formed of a metal material.
  • the flat tubes are formed of aluminum.
  • the flat tubes 10 are horizontally arranged, and the fins 20 are also arranged so as to extend horizontally.
  • the micro-channel-type heat exchanger according to the present example has a structure for the easy discharge of condensed water because the flat tubes 10 and the fins 20 are horizontally arranged.
  • the flat tubes 10 and the fins 20 may be arranged so as to extend vertically.
  • the fins 20 are bent in the longitudinal direction of the flat tubes 10.
  • the fins 20 have the advantage of low manufacturing costs because they may be fabricated by repeatedly conducting a fin-rolling method.
  • the fins 20 are formed of a metal material.
  • the fins 20 are formed of aluminum, like the flat tubes 10.
  • the fins 20 serve to rapidly conduct the heat in the flat tubes 10 so as to increase heat exchange efficiency.
  • the fins 20 are arranged between the flat tubes 10.
  • a fin 20 located at the uppermost position is defined as a first fin 20-1
  • a fin 20 located under the first fin 20-1 is defined as a second fin 20-2
  • a fin 20 located under the second fin 20-2 is defined as a third fin 20-3.
  • Each fin 20 includes a first fin portion 30 located between the two flat tubes 10, a first bent portion 50 bent at the first fin portion 30 so as to come into contact with any one of the two flat tubes 10, a second fin portion 40 bent at the first bent portion 50 so as to be opposite the first fin portion 30 and to be located between the two flat tubes 10, and a second bent portion 60 bent at the second fin portion 40 so as to come into contact with the other one of the two flat tubes 10.
  • the flat tube 10 that is in contact with the first bent portion 50 is defined as a first flat tube 11
  • the flat tube 10 that is in contact with the second bent portion 60 is defined as a second flat tube 12.
  • the fin 20 is configured such that the first fin portion 30, the first bent portion 50, the second fin portion 40, and the second bent portion 60 are repeated.
  • the first fin portion 30 supports the first flat tube 11 and the second flat tube 12.
  • the first fin portion 30 is oriented perpendicular to the longitudinal direction of the first flat tube 11 and the second flat tube 12.
  • the second fin portion 40 also supports the first flat tube 11 and the second flat tube 12, and is oriented perpendicular to the longitudinal direction of the first flat tube 11 and the second flat tube 12.
  • the first fin portion 30 and the second fin portion 40 are spaced apart from each other by a predetermined distance.
  • a flow space 25 for the movement of air is defined between the first fin portion 30 and the second fin portion 40.
  • Air for heat exchange passes through the flow space 25 defined between the first fin portion 30 and the second fin portion 40.
  • the gap in the flow space 25 is small, condensed water, generated when the heat exchanger operates as an evaporator, may be attached and fixed to the first fin portion 30 and the second fin portion 40 via surface tension.
  • the flow space 25 has the gap to prevent condensed water from connecting the first fin portion 30 and the second fin portion 40 to each other via surface tension.
  • the condensed water generated in the first fin portion 30 and the second fin portion 40 comes into contact with air, which moves along the flow space 25, thus falling down.
  • At least one of the first fin portion 30 and the second fin portion 40 is provided with vents 21 and 22, which communicate with an adjacent flow space 25'.
  • both the first fin portion 30 and the second fin portion 40 are provided with the vents 21 and 22.
  • each of the first fin portion 30 and the second fin portion 40 is provided with the two vents 21 and 22, only one vent may be provided, unlike the present embodiment.
  • vents 21 and 22 are defined as a first vent 21 and a second vent 22.
  • the vents 21 and 22 may take the form of holes or slits.
  • vents 21 and 22 are formed by cutting the first fin portion 30 and the second fin portion 40.
  • the first fin portion 30 is provided with a first-first louver 31 for forming the first vent 21. Further, the first fin portion 30 is provided with a first-second louver 32 for forming the second vent 22.
  • the first-first louver 31 is formed by bending the cut first fin portion 30.
  • the first vent 21 is formed in the location in which the first-first louver 31 is cut.
  • the first-second louver 32 is formed in the same method as the first-first louver 31.
  • the louvers 31 and 32 serve to guide some of the air moving along the flow space 25 to the neighboring flow space 25' .
  • the first-first louver 31 and the first-second louver 32 are formed so as to guide the air in different directions.
  • the first-second louver 32 is formed to guide the air from the flow space 25 to the adjacent flow space 25'.
  • louvers protrude from the first fin portion 30 or the second fin portion 40 to the flow space 25 or the adjacent flow space 25'.
  • the louver is formed perpendicular to the longitudinal direction of the first flat tube 11 and the second flat tube 12.
  • Louvers, formed in the second fin portion 40 have the same structure as the louvers formed in the first fin portion 30, and for convenience of description, are defined as a second-first louver 41 and a second-second louver 42.
  • the second fin portion 40 is provided with the first vent 21 formed by the second-first louver 41 and the second vent 22 formed by the second-second louver 42.
  • first-first louver 31 and the first-second louver 32 are formed in opposite directions, the direction in which the fins 20 are installed need not be considered upon the installation of the heat exchanger.
  • the first bent portion 50 comes into close contact with the first flat tube 11 and conducts heat from the first flat tube 11.
  • the first bent portion 50 is formed into a plane in the present example.
  • first bent portion 50 is located at the top and the second bent portion 60 is located at the bottom in the present embodiment, they may be located at the opposite positions.
  • the first bent portion 50 is provided with a condensed water discharge fin 70; 71 to discharge condensed water from the flow space 25.
  • the condensed water discharge fin 70 is formed by cutting and bending the first bent portion 50.
  • the first bent portion 50 is provided with a condensed water discharge hole 51 at the location at which the condensed water discharge fin 70 is present.
  • the condensed water discharge hole formed in the first bent portion 50 is defined as a first condensed water discharge hole 51.
  • two condensed water discharge fins 70 are formed on the first bent portion 50 so as to face each other. Only one condensed water discharge hole 51 is provided.
  • the length of the condensed water discharge fins 70 is half or less the width of the first bent portion 50.
  • a connector 52 for connecting the first fin portion 30 and the second fin portion 40 to each other is formed on the edge of the first bent portion 50.
  • the connector 52 is the portion that remains when the condensed water discharge fins 70 are formed. As such, the connector 52 is formed so as to be in contact with the condensed water discharge hole 51. The connector 52 connects the first fin portion 30 and the second fin portion 40 to each other, thus improving the strength of the fin 20.
  • the condensed water present in the flow space 25 may be discharged from the flow space 25 through the condensed water discharge hole 51.
  • the condensed water discharge fins 70 guide the flow of condensed water when the condensed water is discharged.
  • the second bent portion 60 is provided with a condensed water discharge hole 61 and condensed water discharge fins 70; 72, in the same manner as the first bent portion 50.
  • the condensed water discharge hole, formed in the second bent portion 60, is defined as a second condensed water discharge hole 61.
  • the condensed water discharge fins 71 formed on the first bent portion 50 and the condensed water discharge fins 72 formed on the second bent portion 60 are vertically arranged.
  • the condensed water discharge fin provided on the first bent portion 50 is defined as a first condensed water discharge fin 71 and the condensed water discharge fin provided on the second bent portion 60 is defined as a second condensed water discharge fin 72.
  • the first condensed water discharge fin 71 and the second condensed water discharge fin 72 may be vertically arranged.
  • the first condensed water discharge fin 71 and the second condensed water discharge fin 72 may be aligned in a line.
  • the first condensed water discharge fin 71 and the second condensed water discharge fin 72 may be spaced apart from each other by a predetermined distance.
  • the predetermined distance between the first condensed water discharge fin 71 and the second condensed water discharge fin 72 is the distance by which condensed water can move by surface tension.
  • the second condensed water discharge fin 72 of the first fin 20-1 and the first condensed water discharge fin 71 of the second fin 20-2 are spaced apart from each other by a predetermined distance. Unlike the present example, the second condensed water discharge fin 72 of the first fin 20-1 and the first condensed water discharge fin 71 of the second fin 20-2 may come into contact with each other.
  • condensed water generated in the flow space 25 defined in the upper fin 20, may be discharged to the condensed water discharge hole 61 and may move downward along the second condensed water discharge fin 72. Then, the condensed water may move downward along the second condensed water discharge fin 72 and the first condensed water discharge fin 71 adjacent thereto.
  • the flat tube 10 may be located so as to come into close contact with the condensed water discharge fin 70.
  • the heat exchanger When used as an evaporator, the flat tube 10 has the lowest temperature.
  • the condensed water, generated in the flat tube 10 may rapidly move downward through the condensed water discharge fin 70, which is in close contact with the flat tube 10. Through the rapid movement of the condensed water, it may be possible to minimize the freezing of condensed water on the surface of the flat tube 10.
  • the condensed water discharge fins 70 and the condensed water discharge holes 51 and 61 are formed only on one side of the fin 20. Unlike the present example, the condensed water discharge fins 70 and the condensed water discharge holes 51 and 61 may be formed on opposite sides of the fin 20.
  • the condensed water discharge fins 70 and the condensed water discharge holes 51 and 61 are formed by cutting the first bent portion 50 and the second bent portion 60 in the present example, unlike the present example, only the condensed water discharge holes 51 and 61 may be formed. In addition, when only the condensed water discharge holes 51 and 61 are formed, the holes 51 and 61 may be provided in a plural number along the first bent portion 50 or the second bent portion 60.
  • a micro-channel-type heat exchanger according to an embodiment of the present invention will be described below with reference to FIGs. 7 to 10 .
  • the heat exchanger according to the present embodiment has differences in terms of the position and alignment of the condensed water discharge fins compared to the first embodiment.
  • a fin 120 according to the present embodiment is provided with condensed water discharge fins 170 on opposite edges of the first bent portion 50.
  • the fin 120 is provided with the condensed water discharge fins 170 on opposite edges of the second bent portion 60.
  • the condensed water discharge fins provided on the first bent portion 50 are defined as first condensed water discharge fins 171
  • the condensed water discharge fins provided on the second bent portion 60 are defined as second condensed water discharge fins 172.
  • the first bent portion 50 is provided on opposite edges thereof with condensed water discharge holes 51.
  • the second bent portion 60 is provided on opposite edges thereof with condensed water discharge holes 61.
  • each condensed water discharge hole 51 or 61 is provided with one condensed water discharge fin 170.
  • the first condensed water discharge fin 171 and the second condensed water discharge fin 172, provided on the fin 120, are offset in the vertical direction. That is, the first condensed water discharge fin 171 and the second condensed water discharge fin 172 are not aligned in a line, unlike the first embodiment.
  • the first condensed water discharge fin 171 and the second condensed water discharge fin 172 are offset in the left-to-right direction.
  • the first condensed water discharge fin 171 and the second condensed water discharge fin 172 are arranged so as to face each other at the offset positions.
  • the second condensed water discharge fin 172 of the upper fin 120 and the first condensed water discharge fin 171 of the lower fin 120 are arranged so as to face each other.
  • the first condensed water discharge fin 171 and the second condensed water discharge fin 172 are arranged in a line.
  • the first condensed water discharge fin 171 may be offset when viewing the fins 120 from the front side.
  • the second condensed water discharge fin 172 may also be offset when viewing from the front side.
  • a heat exchanger of the present invention has one or more following effects.
  • the present invention has the advantage of easily discharging condensed water from a flow space, which is defined between a first fin portion and a second fin portion, through condensed water discharge holes and condensed water discharge fins.
  • the present invention has the advantage of fabricating the heat exchanger using a fin-rolling machine because the condensed water discharge holes and the condensed water discharge fins are formed by cutting and bending the first fin portion and the second fin portion.
  • the present invention has the advantage of reducing fabrication costs through the use of the fin-rolling machine.
  • the present invention has the advantage of easily discharging condensed water by arranging the condensed water discharge fins in a line or in a zigzag arrangement.
  • the present invention has the advantage of easily discharging condensed water by forming the condensed water discharge fins in the direction of gravity.
  • the present invention has the advantage of rapidly discharging condensed water because the condensed water discharge fins are arranged in contact with the condensed water discharge holes, through which condensed water is discharged from the flow space.
  • the present invention has the advantage of easily discharging condensed water generated inside fins even when flat tubes and the fins are horizontally installed.

Landscapes

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

Claims (7)

  1. Échangeur de chaleur, comprenant :
    une pluralité de tuyaux plats en forme de micro-canaux ;
    une ailette de côté supérieur (120) constituée d'un matériau métallique et disposée entre un tuyau plat et un autre tuyau plat, conduisant la chaleur des tuyaux plats (10) et disposée sur un côté supérieur du tuyau plat (12) ;
    une ailette de côté inférieur (120) constituée d'un matériau métallique et disposée entre un tuyau plat et un autre tuyau plat, conduisant la chaleur du tuyau plat (12) et disposée sur un côté inférieur du tuyau plat (12) ;
    où l'ailette de côté supérieur (120) comprend :
    une première partie d'ailette (30) disposée sur le côté supérieur du tuyau plat (12), formée dans la direction verticale ;
    une première partie pliée (50) sur la première partie d'ailette (30), située au-dessus du tuyau plat (12), espacée du tuyau plat (12) ;
    une deuxième partie d'ailette (40) pliée vers le bas depuis la première partie pliée (50), la deuxième partie d'ailette (40) étant opposée à la première partie d'ailette (30) et étant située au-dessus du tuyau plat (12) ;
    un espace d'écoulement (25) défini entre la première partie d'ailette (30) et la deuxième partie d'ailette (40), situé au-dessus du tuyau plat (12) ;
    une deuxième partie pliée (60) sur la deuxième partie d'ailette (40) de manière à venir en contact avec le tuyau plat (12), située au-dessus du tuyau plat (12) ;
    un trou d'évacuation de l'eau de condensation (51 ; 61) formé par découpe de la première partie pliée (50) et/ou de la deuxième partie pliée (60) ;
    une première ailette d'évacuation de l'eau de condensation (171) pliée vers le haut depuis la première partie pliée (50), située au-dessus du tuyau plat (12) ;
    une deuxième ailette d'évacuation de l'eau de condensation (172) pliée vers le bas depuis la deuxième partie pliée (60), située pour être en contact étroit avec le tuyau plat (12) ;
    où l'ailette de côté inférieur (120) présente :
    une première partie d'ailette (30) disposée sur le côté inférieur du tuyau plat (12), formée dans la direction verticale ;
    une première partie pliée (50) pliée sur la première partie d'ailette (30), disposée en dessous du tuyau plat (12) de manière à venir en contact avec le tuyau plat (12) ;
    une deuxième partie d'ailette (40) pliée vers le bas depuis la première partie pliée (50), la deuxième partie d'ailette (40) étant opposée à la première partie d'ailette (30) et étant située en dessous des tuyaux plats (12) ;
    un espace d'écoulement (25) défini entre la première partie d'ailette (30) et la deuxième partie d'ailette (40), situé en dessous du tuyau plat (12) ;
    une deuxième partie pliée (60) sur la deuxième partie d'ailette (40), espacée du tuyau plat (12), située en dessous du tuyau plat (12) ;
    un trou d'évacuation de l'eau de condensation (51 ; 61) formé par découpe de la première partie pliée (50) et de la deuxième partie pliée (60), situé en dessous du tuyau plat (12) ;
    une première ailette d'évacuation de l'eau de condensation (171) pliée vers le haut depuis la première partie pliée (50), située pour être en contact étroit avec le tuyau plat (12) ; et
    une deuxième ailette d'évacuation de l'eau de condensation (172) pliée vers le bas depuis la deuxième partie pliée (60), située en dessous du tuyau plat (12) ;
    caractérisé
    en ce qu'un connecteur (52) destiné à connecter l'une à l'autre la première partie d'ailette (30) correspondante et la deuxième partie d'ailette (40) correspondante, est formé sur le bord de la première partie pliée (50) correspondante ;
    où chacune des premières ailettes d'évacuation de l'eau de condensation (171) est formée sur toute la largeur de la première partie pliée (50) correspondante, disposée en ligne avec la première partie d'ailette (30) correspondante, formant le trou d'évacuation correspondant de l'eau de condensation (51),
    où chacune des deuxièmes ailettes d'évacuation de l'eau de condensation (172) est formée sur toute la largeur de la deuxième partie pliée (60) correspondante, disposée en ligne avec la deuxième partie d'ailette (40) correspondante, formant le trou d'évacuation correspondant de l'eau de condensation (61),
    où chacune des premières ailettes d'évacuation de l'eau de condensation (171) et chacune des deuxièmes ailettes d'évacuation de l'eau de condensation (172) est pliée dans une direction opposée à l'autre.
  2. Échangeur de chaleur selon la revendication 1, où le tuyau plat (12) disposé pour venir en contact étroit avec la première ailette d'évacuation de l'eau de condensation (171) et la deuxième ailette d'évacuation de l'eau de condensation (172).
  3. Échangeur de chaleur selon la revendication 1 ou la revendication 2, où la première ailette d'évacuation de l'eau de condensation (171), la deuxième ailette d'évacuation de l'eau de condensation (172) et le trou d'évacuation de l'eau de condensation (51 ; 61) étant situés sur un bord de l'ailette (120).
  4. Échangeur de chaleur selon la revendication 1, où la première ailette d'évacuation de l'eau de condensation (171) de l'ailette inférieure et la deuxième ailette d'évacuation de l'eau de condensation (172) de l'ailette supérieure sont décalées dans la direction verticale.
  5. Échangeur de chaleur selon l'une des revendications 1 à 4, où la première partie d'ailette (30) et/ou la deuxième partie d'ailette (40) sont pourvues d'un évent (21, 22) permettant la communication l'un avec l'autre de l'espace d'écoulement (25) avec un espace d'écoulement (25') adjacent.
  6. Échangeur de chaleur selon la revendication 5, où ladite au moins une partie d'ailette (30, 40) est en outre pourvue d'un volet (31, 32, 41, 42) pour former l'évent (21, 22) et guider l'air.
  7. Échangeur de chaleur selon la revendication 5 ou la revendication 6, où la première partie d'ailette (30) et/ou la deuxième partie d'ailette (40) sont en outre pourvues d'un premier évent (21) et d'un deuxième évent (22), et sont pourvues d'un premier-premier volet (31) pour former le premier évent (21) et d'un premier-deuxième volet (32) pour former le deuxième évent (22), et où le premier-premier volet (31) et le premier-deuxième volet (32) sont formés dans des directions opposées.
EP16182173.1A 2015-07-31 2016-08-01 Échangeur de chaleur Active EP3124905B1 (fr)

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EP (1) EP3124905B1 (fr)
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CN (1) CN106403386A (fr)

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KR102424914B1 (ko) * 2017-08-03 2022-07-22 엘지전자 주식회사 열교환기
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BR112023018455A2 (pt) * 2021-03-19 2023-10-10 Brazeway Inc Trocador de calor de microcanais para condensador de aparelho

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Publication number Publication date
CN106403386A (zh) 2017-02-15
EP3124905A1 (fr) 2017-02-01
US20170030662A1 (en) 2017-02-02
KR20170015146A (ko) 2017-02-08

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