US20130284416A1 - Heat exchanger and air conditioner - Google Patents

Heat exchanger and air conditioner Download PDF

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Publication number
US20130284416A1
US20130284416A1 US13/979,108 US201213979108A US2013284416A1 US 20130284416 A1 US20130284416 A1 US 20130284416A1 US 201213979108 A US201213979108 A US 201213979108A US 2013284416 A1 US2013284416 A1 US 2013284416A1
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United States
Prior art keywords
spacer
region
heat exchanger
insertion region
fin
Prior art date
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Abandoned
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US13/979,108
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English (en)
Inventor
Masanori Jindou
Yoshio Oritani
Shun Yoshioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
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Daikin Industries Ltd
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Assigned to DAIKIN INDUSTRIES, LTD. reassignment DAIKIN INDUSTRIES, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ORITANI, YOSHIO, YOSHIOKA, SHUN, JINDOU, MASANORI
Publication of US20130284416A1 publication Critical patent/US20130284416A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/12—Fins with U-shaped slots for laterally inserting conduits

Definitions

  • the present invention relates to heat exchangers having a flat tube and fins and configured to exchange heat between a fluid flowing in the flat tube and air, and air conditioners having the heat exchangers, and specifically relates to measures for keeping a space between the fins of the heat exchanger.
  • Patent Document 1 shows a heat exchanger in which a plurality of flat tubes, each extending in a horizontal direction, are arranged one above another with a predetermined space between the flat tubes, and plate-like fins are arranged in an extension direction of the flat tubes, with a predetermined space between the fins. Air flowing in contact with the fins exchanges heat with a fluid flowing in the flat tubes.
  • an insertion portion of the fin in which the flat tube is inserted is provided with a fin collar, and a predetermined space is kept between the fins due to the fin collar.
  • the fin collar is formed by bending a portion of the fin which corresponds to a tube insertion portion in which the flat tube is inserted.
  • the tube insertion portion of the fin has a narrow width as well, which may result in a situation where it is impossible to form a fin collar with a height that corresponds to the space between the fins by simply bending a portion of the fin that corresponds to the tube insertion portion thereof.
  • the present invention is thus intended to make it possible to keep a predetermined space between a plurality of fins.
  • the first aspect of the present invention is a heat exchanger, including: a plurality of flat tubes ( 33 ) arranged in parallel such that side surfaces thereof face each other; and a plurality of plate-like fins ( 36 ) each extending in an arrangement direction of the flat tubes ( 33 ), and having a cutout ( 45 ) to which each of the flat tubes ( 33 ) is inserted in an orthogonal direction.
  • each of the fins ( 36 ) includes a plate-like fin body ( 36 a ), and an attachment portion ( 36 b ) with which a corresponding one of the flat tubes ( 33 ) is brought into contact and to which the flat tube ( 33 ) is attached, and the fin body ( 36 a ) includes a plate-like main body ( 36 c ), and a plurality of spacers ( 48 ) which are formed by bending part of the fin body ( 36 a ), continuous with the main body ( 36 c ), and keep a space between the fins ( 36 ).
  • the spacer ( 48 ) is formed by bending part of the fin body ( 36 a ).
  • the spacer ( 48 ) has a sufficient height, and a predetermined space is kept between the fins ( 36 ).
  • the second aspect of the present invention is that in the first aspect of the present invention, the fin body ( 36 a ) has an insertion region ( 40 ) to which the flat tube ( 33 ) is inserted, and an extension region ( 41 ) continuous with one end of the insertion region ( 40 ) in an airflow direction and connecting the insertion regions ( 40 ) together, and the spacers ( 48 ) are formed in both of the insertion region ( 40 ) and the extension region ( 41 ).
  • the spacers ( 48 ) are formed in the insertion region ( 40 ) and the extension region ( 41 ). Thus, a predetermined space is kept between the fins ( 36 ).
  • each of the fins ( 36 ) is configured such that air flows from the insertion region ( 40 ) to the extension region ( 41 ), and the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on a downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on the downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on the downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • each of the fins ( 36 ) is configured such that air flows from the insertion region ( 40 ) to the extension region ( 41 ), and the spacer ( 48 ) of the extension region ( 41 ) is behind the flat tube ( 33 ).
  • the spacer ( 48 ) is located in the dead water region behind the flat tube ( 33 ). Thus, the airflow is not blocked.
  • the fifth aspect of the present invention is that in any one of the second to fourth aspects of the present invention, the spacer ( 48 ) of the insertion region ( 40 ) includes a flat plate-like spacer body ( 48 a ) bent to a right angle from the fin body ( 36 a ), and the spacer ( 48 ) of the insertion region ( 40 ) is tilted with respect to an airflow.
  • the spacer ( 48 ) is tilted with respect to the airflow.
  • the air resistance is reduced.
  • each of the spacers ( 48 ) is formed by cutting and bending part of the fin body ( 36 a ).
  • the spacer ( 48 ) is formed by cutting and bending part of the fin body ( 36 a ). Thus, no separate member is necessary to form the spacer ( 48 ).
  • the seventh aspect of the present invention is that in the sixth aspect of the present invention, the spacer ( 48 ) of the insertion region ( 40 ) is cut and bent from a upwind side to a downwind side, and the spacer ( 48 ) of the extension region ( 41 ) is cut and bent from the downwind side to the upwind side.
  • the space between the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ) is reduced, and the space between the fins ( 36 ) is reliably kept.
  • the insertion region ( 40 ) includes an intermediate region ( 42 ) located between the flat tubes ( 33 ), and a projection region ( 43 ) projecting toward the upwind side from the intermediate region ( 42 ) so as to be away from the extension region ( 41 ), and the spacer ( 48 ) of the insertion region ( 40 ) is provided in the projection region ( 43 ) at a middle portion through which a middle line between the flat tubes ( 33 ) passes.
  • the spacer ( 48 ) of the insertion region ( 40 ) is located at a middle portion between the flat tubes ( 33 ).
  • the space between the fins ( 36 ) is reliably kept.
  • the ninth aspect of the present invention is that in the second or fourth aspect of the present invention, the insertion region ( 40 ) includes an intermediate region ( 42 ) located between the flat tubes ( 33 ), and a projection region ( 43 ) projecting toward the upwind side from the intermediate region ( 42 ) so as to be away from the extension region ( 41 ), and the spacer ( 48 ) of the insertion region ( 40 ) is bent from an edge of the projection region ( 43 ) which is a parallel edge ( 43 b ) parallel to the airflow.
  • the spacer ( 48 ) is formed at a parallel edge ( 43 b ) of the projection region ( 43 ) which is parallel to the airflow.
  • the airflow is not blocked, and the air resistance is significantly reduced.
  • the spacer ( 48 ) of the insertion region ( 40 ) includes a flat plate-like spacer body ( 48 a ) bent to a right angle from the fin body ( 36 a ), and the spacer ( 48 ) of the insertion region ( 40 ) is parallel to the airflow.
  • the spacer ( 48 ) is in parallel to the airflow.
  • the airflow is not blocked, and the air resistance is significantly reduced.
  • each of the spacers ( 48 ) is in a trapezoidal shape, and a tip of the spacer ( 48 ) is a long side of the trapezoidal shape.
  • the tip of the spacer ( 48 ) is a long side of a trapezoidal shape.
  • a sufficient contact area with the adjacent fin ( 36 ) is ensured.
  • each of the spacers ( 48 ) is provided with a rib ( 48 d ) extending in a projection direction of the spacer ( 48 ).
  • the spacer ( 48 ) is provided with the rib ( 48 d ).
  • the proof strength of the spacer ( 48 ) is improved.
  • the thirteenth aspect of the present invention is that in the twelfth aspect of the present invention, the rib ( 48 d ) extends from the main body ( 36 c ) of the fin body ( 36 a ) to the spacer ( 48 ).
  • the rib ( 48 d ) extends from the main body ( 36 c ) of the fin body ( 36 a ) to the spacer ( 48 ).
  • the strength of the bent portion ( 48 c ) of the spacer ( 48 ) is increased.
  • the fourteenth aspect of the present invention is that in any one of the sixth to eighth aspects of the present invention, a tip of each of the spacers ( 48 ) is off a hole ( 36 d ) that is formed in adjacent one of the fin bodies ( 36 a ) as a result of cutting and bending corresponding one of the spacers ( 48 ) in the adjacent fin body ( 36 a ).
  • the tip of the spacer ( 48 ) is off the hole ( 36 d ) formed in the adjacent fin body ( 36 a ), and thus, the tip of the spacer ( 48 ) does not fit into the hole ( 36 d ) formed in the adjacent fin body ( 36 a ).
  • the fifteenth aspect of the present invention is directed to an air conditioner ( 10 ) including a refrigerant circuit ( 20 ) in which the heat exchanger ( 30 ) of any one of the first to fourteenth aspects of the present invention is provided, wherein the refrigerant circuit ( 20 ) performs a refrigeration cycle by circulating a refrigerant.
  • the heat exchanger ( 30 ) of any one of the first to fourteenth aspects of the present invention is connected to the refrigerant circuit ( 20 ).
  • the refrigerant circulating in the refrigerant circuit ( 20 ) flows in the path ( 34 ) of the flat tube ( 33 ), and exchanges heat with the air, for example.
  • part of the fin body ( 36 a ) is bent to form the spacer ( 48 ).
  • the spacer ( 48 ) may have a sufficient height, and a predetermined space can be kept between the fins ( 36 ).
  • the spacers ( 48 ) are formed in the insertion region ( 40 ) and the extension region ( 41 ) of the fin body ( 36 a ).
  • a predetermined space between the fins ( 36 ) can be reliably kept throughout the fins ( 36 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on the downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on the downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • the spacer ( 48 ) is located in the dead water region behind the flat tube ( 33 ). Thus, the airflow is not blocked.
  • the spacer ( 48 ) is tilted with respect to the airflow.
  • the air resistance is reliably reduced.
  • part of the fin body ( 36 a ) is cut and bent to form the spacer ( 48 ).
  • the spacer ( 48 ) is formed by cutting and bent to form the spacer ( 48 ).
  • the spacer ( 48 ) of the insertion region ( 40 ) is cut and bent from the upwind side to the downwind side, and the spacer ( 48 ) of the extension region ( 41 ) is cut and bent from the downwind side to the upwind side.
  • the space between the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ) can be reduced, and the space between the fins ( 36 ) is reliably kept.
  • the spacer ( 48 ) of the insertion region ( 40 ) is provided in the projection region ( 43 ) at a middle portion through which a middle line between the flat tubes ( 33 ) passes.
  • the space between the fins ( 36 ) can be reliably kept.
  • the spacer ( 48 ) is formed at the parallel edge ( 43 b ) of the projection region ( 43 ) which is parallel to the airflow.
  • the spacer ( 48 ) can be formed by using a portion to be removed in the formation of the fin ( 36 ). It is thus possible to provide the spacer ( 48 ) with efficiency.
  • the spacer ( 48 ) is in parallel to the airflow.
  • the airflow is less blocked, and the air resistance can be further reduced.
  • the tip of the spacer ( 48 ) is a long side of a trapezoidal shape.
  • the spacer ( 48 ) is provided with the rib ( 48 d ).
  • the proof strength of the spacer ( 48 ) can be improved.
  • deformation of the spacer ( 48 ) can be reliably prevented, and therefore, a predetermined space between the fins ( 36 ) can be reliably kept.
  • the rib ( 48 d ) extends from the main body ( 36 c ) of the fin body ( 36 a ) to the spacer ( 48 ).
  • the strength of the bent portion ( 48 c ) is increased, and inclination of the spacer ( 48 ) can be reliably prevented.
  • the tip of the spacer ( 48 ) is off the hole ( 36 d ) formed in the adjacent fin body ( 36 a ) as a result of cutting and bending the corresponding spacer ( 48 ) in the adjacent fin body ( 36 a ).
  • the tip does not fit into the hole ( 36 d ) of the adjacent fin body ( 36 a ).
  • the spacer ( 48 ) can keep the predetermined space between the fins ( 36 ) with reliability.
  • FIG. 1 is a refrigerant circuit diagram showing a schematic configuration of an air conditioner of the first embodiment.
  • FIG. 2 is an oblique view schematically showing the heat exchanger of the first embodiment.
  • FIG. 3 is a partial cross-sectional view of the front side of the heat exchanger of the first embodiment.
  • FIG. 4 is a cross-sectional view of part of the heat exchanger taken along the line A-A of FIG. 3 .
  • FIG. 5 is a front view of a main part of a fin of the heat exchanger of the first embodiment.
  • FIG. 6 is a cross-sectional view taken along the line B-B of FIG. 5 .
  • FIG. 7 is a cross-sectional view of a plurality of fins of the first embodiment.
  • FIG. 8 shows the front side of a spacer.
  • FIG. 9 is a front view of a main part of a fin of a heat exchanger of the second embodiment.
  • FIG. 10 is a cross-sectional view of the fin of the second embodiment.
  • FIG. 11 is a front view of a main part of a fin of the third embodiment.
  • FIG. 12 is an oblique view of a main part of a fin before cutting and bending a spacer of the fourth embodiment.
  • FIG. 13 is an oblique view of the main part of the fin after cutting and bending the spacer of the fourth embodiment.
  • FIG. 14 is a plan view of the spacer of the fourth embodiment.
  • FIG. 15 is a cross-sectional view of a spacer of the fifth embodiment.
  • FIG. 16 is a front view of a main part of a fin of the sixth embodiment.
  • a heat exchanger ( 30 ) of the first embodiment comprises an outdoor heat exchanger ( 23 ) of an air conditioner ( 10 ).
  • the air conditioner ( 10 ) having the heat exchanger ( 30 ) of the present embodiment will be described with reference to FIG. 1 .
  • the air conditioner ( 10 ) has an outdoor unit ( 11 ) and an indoor unit ( 12 ).
  • the outdoor unit ( 11 ) and the indoor unit ( 12 ) are connected to each other via a liquid communication pipe ( 13 ) and a gas communication pipe ( 14 ).
  • a refrigerant circuit ( 20 ) is formed by the outdoor unit ( 11 ), the indoor unit ( 12 ), the liquid communication pipe ( 13 ), and the gas communication pipe ( 14 ).
  • the refrigerant circuit ( 20 ) includes a compressor ( 21 ), a four-way valve ( 22 ), an outdoor heat exchanger ( 23 ), an expansion valve ( 24 ), and an indoor heat exchanger ( 25 ).
  • the compressor ( 21 ), the four-way valve ( 22 ), the outdoor heat exchanger ( 23 ), and the expansion valve ( 24 ) are accommodated in the outdoor unit ( 11 ).
  • the outdoor unit ( 11 ) is provided with an outdoor fan ( 15 ) configured to supply outdoor air to the outdoor heat exchanger ( 23 ).
  • the indoor heat exchanger ( 25 ) is accommodated in the indoor unit ( 12 ).
  • the indoor unit ( 12 ) is provided with an indoor fan ( 16 ) configured to supply indoor air to the indoor heat exchanger ( 25 ).
  • a discharge side of the compressor ( 21 ) is connected to a first port of the four-way valve ( 22 ), and a suction side of the compressor ( 21 ) is connected to a second port of the four-way valve ( 22 ).
  • the outdoor heat exchanger ( 23 ), the expansion valve ( 24 ), and the indoor heat exchanger ( 25 ) are provided sequentially from a third port to a fourth port of the four-way valve ( 22 ).
  • the compressor ( 21 ) is a scroll type or rotary type hermetic compressor.
  • the four-way valve ( 22 ) switches between a first state (the state shown in broken line in FIG. 1 ) in which the first port communicates with the third port, and the second port communicates with the fourth port, and a second state (the state shown in solid line in FIG. 1 ) in which the first port communicates with the fourth port, and the second port communicates with the third port.
  • the expansion valve ( 24 ) is a so-called electronic expansion valve ( 24 ).
  • the outdoor heat exchanger ( 23 ) the outdoor air is heat exchanged with the refrigerant.
  • the outdoor heat exchanger ( 23 ) is comprised of the heat exchanger ( 30 ) of the present embodiment.
  • the indoor heat exchanger ( 25 ) the indoor air is heat exchanged with the refrigerant.
  • the indoor heat exchanger ( 25 ) is comprised of a so-called cross-fin type fin-and-tube heat exchanger having a circular heat-transfer tube.
  • the air conditioner ( 10 ) performs a cooling operation.
  • the four-way valve ( 22 ) is set to the first state during the cooling operation.
  • the outdoor fan ( 15 ) and the indoor fan ( 16 ) are driven during the cooling operation.
  • the refrigerant circuit ( 20 ) performs a refrigeration cycle. Specifically, the refrigerant discharged from the compressor ( 21 ) passes through the four-way valve ( 22 ), flows into the outdoor heat exchanger ( 23 ), and dissipates heat to the outdoor air and condenses. The refrigerant flowing out of the outdoor heat exchanger ( 23 ) expands when it passes through the expansion valve ( 24 ), flows into the indoor heat exchanger ( 25 ), and takes heat from the indoor air and evaporates. The refrigerant flowing out of the indoor heat exchanger ( 25 ) passes through the four-way valve ( 22 ) and is then sucked into the compressor ( 21 ) and compressed. The indoor unit ( 12 ) supplies air which has been cooled in the indoor heat exchanger ( 25 ) to an indoor space.
  • the air conditioner ( 10 ) performs a heating operation.
  • the four-way valve ( 22 ) is set to the second state during the heating operation.
  • the outdoor fan ( 15 ) and the indoor fan ( 16 ) are driven during the heating operation.
  • the refrigerant circuit ( 20 ) performs a refrigeration cycle. Specifically, the refrigerant discharged from the compressor ( 21 ) passes the four-way valve ( 22 ), flows into the indoor heat exchanger ( 25 ), and dissipates heat to the indoor air and condenses. The refrigerant flowing out of the indoor heat exchanger ( 25 ) expands when it passes through the expansion valve ( 24 ), flows into the outdoor heat exchanger ( 23 ), and takes heat from the outdoor air and evaporates. The refrigerant flowing out of the outdoor heat exchanger ( 23 ) passes through the four-way valve ( 22 ) and is then sucked into the compressor ( 21 ) and compressed. The indoor unit ( 12 ) supplies air which has been heated in the indoor heat exchanger ( 25 ) to an indoor space.
  • the outdoor heat exchanger ( 23 ) functions as an evaporator in the heating operation.
  • the evaporation temperature of the refrigerant in the outdoor heat exchanger ( 23 ) may sometimes be below 0° C.
  • the moisture in the outdoor air turns into frost and adheres to the outdoor heat exchanger ( 23 ).
  • the air conditioner ( 10 ) performs a defrosting operation every time a duration of the heating operation reaches a predetermined value (e.g., several tens of minutes), for example.
  • the four-way valve ( 22 ) is switched from the second state to the first state, and the outdoor fan ( 15 ) and the indoor fan ( 16 ) are stopped.
  • a high temperature refrigerant discharged from the compressor ( 21 ) is supplied to the outdoor heat exchanger ( 23 ).
  • the frost adhering to the surface of the outdoor heat exchanger ( 23 ) is heated and melted by the refrigerant.
  • the refrigerant which dissipates heat in the outdoor heat exchanger ( 23 ) sequentially passes through the expansion valve ( 24 ) and the indoor heat exchanger ( 25 ), and is then sucked into the compressor ( 21 ) and compressed.
  • the heating operation starts again. That is, the four-way valve ( 22 ) is switched from the first state to the second state, and the outdoor fan ( 15 ) and the indoor fan ( 16 ) are driven again.
  • the heat exchanger ( 30 ) of the present embodiment which comprises the outdoor heat exchanger ( 23 ) of the air conditioner ( 10 ) will be described with reference to FIGS. 2 to 8 .
  • the heat exchanger ( 30 ) includes one first header collecting pipe ( 31 ), one second header collecting pipe ( 32 ), a plurality of flat tubes ( 33 ), and a plurality of fins ( 36 ).
  • the first header collecting pipe ( 31 ), the second header collecting pipe ( 32 ), the flat tubes ( 33 ), and the fins ( 36 ) are all aluminum alloy members, and are attached to one another with solder.
  • the flat tubes ( 33 ) and the fins ( 36 ) are provided such that the width direction thereof is along the airflow, and the flat tubes ( 33 ) and the fins ( 36 ) are arranged to be orthogonal to each other in a grid pattern.
  • Both of the first header collecting pipe ( 31 ) and the second header collecting pipe ( 32 ) are in an elongated cylindrical shape.
  • One of the first header collecting pipe ( 31 ) and the second header collecting pipe ( 32 ) is provided at the left end of the heat exchanger ( 30 ), and the other is provided at the right end of the heat exchanger ( 30 ).
  • each of the flat tubes ( 33 ) is a heat-transfer tube having a flat cross section, and the flat tubes ( 33 ) are arranged one above another such that the flat surfaces thereof face each other.
  • Each flat tube ( 33 ) has a plurality of fluid passages ( 34 ).
  • One end of each of the flat tubes ( 33 ) arranged one above another is inserted in the first header collecting pipe ( 31 ), and the other end is inserted in the second header collecting pipe ( 32 ).
  • Each fin ( 36 ) is in a plate-like shape, and the fins ( 36 ) are arranged in an extension direction of the flat tube ( 33 ) with a predetermined space between the fins ( 36 ). In other words, the fins ( 36 ) are arranged to be substantially orthogonal to the extension direction of the flat tube ( 33 ).
  • each fin ( 36 ) is in an elongated plate-like shape formed by pressing a metal plate.
  • the fin ( 36 ) includes a plate-like fin body ( 36 a ) and an attachment portion ( 36 b ) by which the flat tube ( 33 ) is attached to the fin body ( 36 a ).
  • the fin ( 36 ) is provided with a plurality of elongated cutouts ( 45 ) each extending in a width direction of the fin ( 36 ) from a leading edge ( 39 ) of the fin ( 36 ), and corresponding to the flat tubes ( 33 ).
  • the plurality of cutouts ( 45 ) are formed in the fin ( 36 ) at predetermined intervals in a longitudinal direction (i.e., a vertical direction) of the fin ( 36 ).
  • the cutouts ( 45 ) are configured such that the flat tubes ( 33 ) are inserted therein.
  • a downwind portion of the cutout ( 45 ) comprises a tube insertion portion ( 46 ) in which the flat tube ( 33 ) is inserted.
  • a width of the tube insertion portion ( 46 ) in the vertical direction is substantially equal to the thickness of the flat tube ( 33 ), and a length of the tube insertion portion ( 46 ) is substantially equal to the width of the flat tube ( 33 ).
  • An edge portion of the tube insertion portion ( 46 ) of the fin ( 36 ) serves as the attachment portion ( 36 b ).
  • the edge portion of the tube insertion portion ( 46 ) is provided with a collar to serve as the attachment portion ( 36 b ).
  • the flat tube ( 33 ) is inserted in the tube insertion portion ( 46 ) to be in contact with the attachment portion ( 36 b ), and is attached to the attachment portion ( 36 b ) with solder, thereby attaching the flat tube ( 33 ) to the fin body ( 36 a ).
  • the fin body ( 36 a ) includes an insertion region ( 40 ) into which the flat tube ( 33 ) is inserted, and an extension region ( 41 ) that is continuous with one end, in the airflow direction, of each insertion region ( 40 ) and connecting the insertion regions ( 40 ). That is, the insertion region ( 40 ) is located on the upwind side of the air, and the extension region ( 41 ) is located on the downwind side of the insertion region ( 40 ).
  • the insertion region ( 40 ) includes an intermediate region ( 42 ) located between the flat tubes ( 33 ), and a projection region ( 43 ) which projects from the intermediate region ( 42 ) in a direction away from the extension region ( 41 ). That is, the projection region ( 43 ) is on the most upwind side of the air; the intermediate region ( 42 ) is located on the downwind side of the projection region ( 43 ); and the extension region ( 41 ) is located on the downwind side of the intermediate region ( 42 ).
  • a plurality of louvers ( 50 ) are provided in the insertion region ( 40 ) and the extension region ( 41 ) of the fin body ( 36 a ).
  • Each of the louvers ( 50 ) comprises a heat-transfer promotion portion, and is formed by cutting and bending part of the insertion region ( 40 ) and the extension region ( 41 ) as shown in FIG. 6 and FIG. 7 . That is, the louvers ( 50 ) are formed by giving a plurality of slit-like cuts in the insertion region ( 40 ) and the extension region ( 41 ) and plastically deforming a portion between adjacent cuts as if twisting the portion.
  • each louver ( 50 ) is substantially parallel to the leading edge ( 38 ) of the projection region ( 43 ). That is, the longitudinal direction of each louver ( 50 ) is the vertical direction.
  • the plurality of louvers ( 50 ) are arranged next to each other from the upwind side to the downwind side.
  • a water-conducting rib ( 71 ) is formed in the extension region ( 41 ) of the fin body ( 36 a ).
  • the water-conducting rib ( 71 ) is an elongated recessed groove extending vertically along a downwind side edge of the extension region ( 41 ).
  • the water-conducting rib ( 71 ) extends from the upper end to the lower end of the extension region ( 41 ).
  • the fin body ( 36 a ) is provided with a spacer ( 48 ) configured to keep a space between adjacent fins ( 36 ).
  • the spacer ( 48 ) is provided in each of the extension region ( 41 ) of the fin body ( 36 a ) and the projection region ( 43 ) of the insertion region ( 40 ).
  • the spacer ( 48 ) of the extension region ( 41 ) corresponds to the tube insertion portion ( 46 ), and one spacer ( 48 ) is located behind each of the flat tubes ( 33 ), that is, located on the downwind side of the flat tube ( 33 ).
  • the spacer ( 48 ) of the insertion region ( 40 ) is provided such that one spacer ( 48 ) is located in each of the projection regions ( 43 ) at a position on the upwind side of the most upwind side louver ( 50 ) and a middle portion of the projection region ( 43 ). That is, the spacer ( 48 ) of the insertion region ( 40 ) is located in the projection region ( 43 ) at a middle portion through which a middle line between the flat tubes ( 33 ) passes.
  • the middle portion includes a portion that is on the middle line between the flat tubes ( 33 ), and also a portion that is off the middle line to a certain extent.
  • the spacer ( 48 ) is formed by bending part of the fin body ( 36 a ), specifically by cutting and bending part of the fin body ( 36 a ). That is, the fin body ( 36 a ) includes a plate-like main body ( 36 c ) having the insertion region ( 40 ) and the extension region ( 41 ), and the spacer ( 48 ) continuous with the main body ( 36 c ). The spacer ( 48 ) is raised at a right angle from the main body ( 36 c ) of the fin body ( 36 a ) via a bent portion ( 48 c ). On the other hand, a hole ( 36 d ) is formed in the fin body ( 36 a ) as a result of cutting and bending the spacer ( 48 ).
  • the spacer ( 48 ) is comprised of a flat plate-like spacer body ( 48 a ) bent at a right angle from the fin body ( 36 a ), and an arc-shaped curved portion ( 48 b ) at the tip of the spacer body ( 48 a ).
  • the spacer ( 48 ) has a trapezoidal shape in which the tip thereof, i.e., the edge of the curved portion ( 48 b ) is the long side. Further, the tip of the spacer ( 48 ) is off the hole ( 36 d ) that is formed in the adjacent fin body ( 36 a ) as a result of cutting and bending a corresponding spacer ( 48 ) in the adjacent fin body ( 36 a ).
  • the spacer ( 48 ) is configured such that the tip is in contact with the main body ( 36 c ) of the adjacent fin body ( 36 a ) at a location near the hole ( 36 d ).
  • the spacer ( 48 ) of the extension region ( 41 ) is formed in a dead water region formed by the flat tube ( 33 ), and a width of the spacer ( 48 ) of the extension region ( 41 ) is approximately the same as the thickness of the flat tube ( 33 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is formed such that the flat surface thereof is orthogonal to the airflow. That is, the width direction and the height direction of the spacer ( 48 ) of the extension region ( 41 ) are orthogonal to the airflow.
  • the spacer ( 48 ) of the insertion region ( 40 ) is formed such that the flat surface thereof is tilted with respect to the airflow.
  • the spacer ( 48 ) is tilted from one side to the other side of the spacer ( 48 ) with respect to the downwind direction so that the air resistance may be reduced. That is, the height direction of the spacer ( 48 ) of the insertion region ( 40 ) is orthogonal to the airflow, and the width direction of the spacer ( 48 ) of the insertion region ( 40 ) is tilted with respect to the airflow.
  • the spacer ( 48 ) of the insertion region ( 40 ) is cut and bent from the upwind side to the downwind side.
  • the spacer ( 48 ) of the extension region ( 41 ) is cut and bent from the downwind side to the upwind side. This means that the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ) are formed such that the space between the spacers ( 48 ) is reduced.
  • the tips of the curved portions ( 48 b ) of the spacers ( 48 ) of the extension region ( 41 ) and the insertion region ( 40 ) are in contact with the main body ( 36 c ) of the adjacent fin body ( 36 a ), and keep a predetermined space between adjacent fin bodies ( 36 a ).
  • part of the fin body ( 36 a ) is bent to form the spacer ( 48 ).
  • the spacer ( 48 ) may have a sufficient height, and a predetermine space can be kept between the fins ( 36 ) with reliability.
  • the spacers ( 48 ) are formed in the insertion region ( 40 ) and the extension region ( 41 ) of the fin body ( 36 a ). Thus, a predetermine space can be kept between the fins ( 36 ) with reliability throughout the fins ( 36 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is located in the dead water region behind the flat tube ( 33 ). Thus, the airflow is not blocked.
  • the spacer body ( 48 a ) of the insertion region ( 40 ) is tilted with respect to the airflow. Thus, the air resistance can be reduced with reliability.
  • Part of the fin body ( 36 a ) is cut and bent to form the spacer ( 48 ).
  • the spacer ( 48 ) is formed by cutting and bent to form the spacer ( 48 ).
  • the spacer ( 48 ) of the insertion region ( 40 ) is cut and bent from the upwind side to the downwind side, and the spacer ( 48 ) of the extension region ( 41 ) is cut and bent from the downwind side and the upwind side.
  • the space between the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ) can be reduced, and the space between the fins ( 36 ) is reliably kept.
  • the spacer ( 48 ) of the insertion region ( 40 ) is located in the projection region ( 43 ) at a middle portion through which the middle line between the flat tubes ( 33 ) passes. Thus, the space between the fins ( 36 ) is reliably kept.
  • each spacer ( 48 ) is a long side. Thus, a sufficient contact area with the adjacent fin ( 36 ) can be ensured, and a predetermined space between the fins ( 36 ) can be reliably kept.
  • the tip of the spacer ( 48 ) is off the hole ( 36 d ) that is formed in the adjacent fin body ( 36 a ) as a result of cutting and bending a corresponding spacer ( 48 ) in the adjacent fin body ( 36 a ).
  • the tip does not fit into the hole ( 36 d ) of the adjacent fin body ( 36 a ).
  • the spacer ( 48 ) can keep a predetermined space between the fins ( 36 ) with reliability.
  • spacers ( 48 ) of the insertion region ( 40 ) are provided at edges of the projection region ( 43 ), as shown in FIG. 9 and FIG. 10 , instead of providing the spacer ( 48 ) of the insertion region ( 40 ) at the middle portion of the projection region ( 43 ) as in the first embodiment.
  • both sides of the projection region ( 43 ) of the fin body ( 36 a ) include a gently-inclined edge ( 43 a ) which is gently inclined toward the downwind side from the leading edge ( 38 ) due to the cutout ( 45 ), a parallel edge ( 43 b ) continuous with the gently-inclined edge ( 43 a ) and parallel with the airflow, and a steeply-inclined edge ( 43 c ) which is continuous with the parallel edge ( 43 b ) and is steeply inclined toward the downwind side.
  • the tube insertion portion ( 46 ) is continuous with the steeply-inclined edge ( 43 c ).
  • the spacers ( 48 ) of the insertion region ( 40 ) are bent from the parallel edges ( 43 b ) on both sides of the projection region ( 43 ).
  • Each of the spacers ( 48 ) of the insertion region ( 40 ) has a trapezoidal shape, and includes a spacer body ( 48 a ) and a curved portion ( 48 b ), similar to the spacer ( 48 ) of the first embodiment.
  • the spacer body ( 48 a ) is bent at a right angle from the projection region ( 43 ), and parallel with the airflow.
  • the tips of the curved portions ( 48 b ) of the spacers ( 48 ) of the insertion region ( 40 ) are in contact with edge portions of the projection region ( 43 ) of the adjacent fin body ( 36 a ), and keep a predetermined space between the adjacent fin bodies ( 36 a ).
  • a protrusion ( 60 ), i.e., a heat-transfer promotion portion, is formed by bending the fin body ( 36 a ) into an inverted V shape, instead of the upwind side louvers ( 50 ) of the first embodiment.
  • the other configurations and effects are similar to those in the first embodiment.
  • the spacer ( 48 ) of the extension region ( 41 ) is similar to the spacer ( 48 ) of the extension region ( 41 ) in the first embodiment.
  • the spacers ( 48 ) are provided at the parallel edges ( 43 b ) of the projection region ( 43 ) which are parallel with the airflow.
  • the spacer ( 48 ) can be formed by using a portion to be removed in the formation of the fin ( 36 ). It is thus possible to provide the spacer ( 48 ) with efficiency.
  • the spacer body ( 48 a ) is parallel to the airflow. Thus, the airflow is not blocked, and the air resistance can be further reduced.
  • the advantages of other configurations, e.g., the spacer ( 48 ) of the extension region ( 41 ) are similar to those of the first embodiment.
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ), as shown in FIG. 11 , instead of the spacer ( 48 ) of the extension region ( 41 ) provided behind the flat tube ( 33 ) in the first embodiment.
  • the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ) are provided at the middle portion through which the middle line between the flat tubes ( 33 ) passes.
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on the downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • the middle portion includes a portion that is on the middle line between the flat tubes ( 33 ), and also a portion that is off the middle line to a certain extent.
  • the spacer ( 48 ) of the insertion region ( 40 ) is tilted with respect to the airflow, and the spacer ( 48 ) of the extension region ( 41 ) is orthogonal to the airflow, similar to the first embodiment.
  • the spacer ( 48 ) of the insertion region ( 40 ) is cut and bent from the upwind side to the downwind side, and the spacer ( 48 ) of the extension region ( 41 ) is cut and bent from the downwind side to the upwind side.
  • the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ) are formed such that the space between the spacers ( 48 ) is reduced.
  • the fin body ( 36 a ) of the present embodiment is provided with a protrusion ( 60 ), i.e., a heat-transfer promotion portion, which is formed by bending the fin body ( 36 a ) into an inverted V shape as described in the second embodiment, instead of the upwind side louvers ( 50 ) of the first embodiment.
  • a protrusion ( 60 ) i.e., a heat-transfer promotion portion, is provided in place of the louver ( 50 ) of the downwind side louvers ( 50 ) in the first embodiment, which is located on the downwind side of the intermediate region ( 42 ) of the insertion region ( 40 ).
  • the protrusion ( 60 ) of the extension region ( 41 ) is located behind the flat tube ( 33 ), and the air flowing along the flat tube ( 33 ) in the space between the flat tube ( 33 ), and the louvers ( 50 ) and the protrusion ( 60 ), exchanges heat with the protrusion ( 60 ) of the extension region ( 41 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is located at a position between the protrusions ( 60 ) of the extension region ( 41 ).
  • the other configurations and effects are similar to those in the first embodiment.
  • the spacer ( 48 ) of the extension region ( 41 ) is similar to the spacer ( 48 ) of the extension region ( 41 ) in the first embodiment.
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on the downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • the spacer ( 48 ) of the extension region ( 41 ) is straight behind the spacer ( 48 ) of the insertion region ( 40 ) on the downwind side of the spacer ( 48 ) of the insertion region ( 40 ).
  • the spacer ( 48 ) of the insertion region ( 40 ) is cut and bent from the upwind side to the downwind side, and the spacer ( 48 ) of the extension region ( 41 ) is cut and bent from the downwind side to the upwind side.
  • the space between the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ) can be reduced, and the space between the fins ( 36 ) can be reliably kept.
  • the spacer ( 48 ) of the insertion region ( 40 ) is located in the projection region ( 43 ) at a middle portion through which the middle line between the flat tubes ( 33 ) passes. Thus, the space between the fins ( 36 ) is reliably kept.
  • the spacer ( 48 ) of the extension region ( 41 ) is located between the protrusions ( 60 ) of the extension region ( 41 ).
  • a rib ( 48 d ) is provided at the spacer ( 48 ) of the third embodiment as shown in FIG. 12 to FIG. 14 .
  • the rib ( 48 d ) is a linear raised portion extending in a projection direction of the spacer ( 48 ), and one rib ( 48 d ) is provided at the spacer ( 48 ).
  • the rib ( 48 d ) is located in a middle portion of the spacer body ( 48 a ).
  • the tip of the rib ( 48 d ) is located at the tip of the spacer body ( 48 a ).
  • the rib ( 48 d ) extends from the spacer body ( 48 a ) via the bent portion ( 48 c ), and the base end of rib ( 48 d ) is located at the main body ( 36 c ) of the fin body ( 36 a ) In other words, the rib ( 48 d ) is bent at the bent portion ( 48 c ), and the rib ( 48 d ) is not provided at the curved portion ( 48 b ) of the spacer ( 48 ).
  • the rib ( 48 d ) is provided to increase the strength of the spacer ( 48 ) in the projection direction, because the thickness of the fin ( 36 ) is small and thus if the spacer ( 48 ) is formed by simply cutting and bending the fin body ( 36 a ), the spacer ( 48 ) has low proof strength and is easily deformed.
  • the rib ( 48 d ) is formed in a state in which the spacer ( 48 ) is not cut and bent from the fin body ( 36 a ) yet. In this state, the rib ( 48 d ) projects in the same direction as the projection direction of the protrusion ( 60 ). After that, the spacer ( 48 ) is cut and bent from the fin body ( 36 a ) as shown in FIG. 13 .
  • the rib ( 48 d ) is provided at each of the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ).
  • the rib ( 48 d ) may include a plurality of ribs ( 48 d ).
  • the other configurations are similar to those in the third embodiment.
  • the spacers ( 48 ) of the first and second embodiments may be provided with the rib ( 48 d ).
  • the proof strength of the spacer ( 48 ) can be increased.
  • deformation of the spacer ( 48 ) can be reliably prevented, and therefore, a predetermined space between the fins ( 36 ) can be reliably kept.
  • the rib ( 48 d ) extends from the main body ( 36 c ) of the fin body ( 36 a ) to the spacer ( 48 ).
  • the strength of the bent portion ( 48 c ) is increased, and inclination of the spacer ( 48 ) can be reliably prevented.
  • the other effects and advantages are similar to those of the third embodiment.
  • the spacer ( 48 ) is in an L shape in place of the spacer ( 48 ) of the fourth embodiment which is comprised of the spacer body ( 48 a ) and the curved portion ( 48 b ).
  • the spacer ( 48 ) includes a first portion ( 48 e ) on the base end side, and a second portion ( 48 f ) on the tip side.
  • the first portion ( 48 e ) and the second portion ( 48 f ) are flat plate-like portions.
  • the first portion ( 48 e ) extends obliquely upward toward the hole ( 36 d ), from the main body ( 36 c ) of the fin body ( 36 a ) through the bent portion ( 48 c ).
  • the second portion ( 48 f ) is bent from the first portion ( 48 e ) at about a right angle, and extends obliquely upward in a direction away from the hole ( 36 d ).
  • the spacer ( 48 ) is configured such that the tip of the second portion ( 480 is in contact with the adjacent fin body ( 36 a ).
  • a rib ( 48 d ) is provided at the spacer ( 48 ), similar to the fourth embodiment.
  • the rib ( 48 d ) extends from the main body ( 36 c ) of the fin body ( 36 a ) to near the tip of the second portion ( 480 via the first portion ( 48 e ).
  • the other configurations, effects and advantages are similar to those in the fourth embodiment. That is, the spacer ( 48 ) of the present embodiment is applied to the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the extension region ( 41 ), and may also be applied to the spacers ( 48 ) in the first to third embodiments. In other words, the spacer ( 48 ) of the present embodiment may not have the rib ( 48 d ).
  • horizontal ribs ( 61 , 62 ), i.e., heat-transfer promotion portions, are provided at the fin body ( 36 a ) of the third embodiment.
  • the fin ( 36 ) is provided with two horizontal ribs ( 61 , 62 ) extending from the projection region ( 43 ) to the intermediate region ( 42 ).
  • Each of the horizontal ribs ( 61 , 62 ) is a raised line which projects in the same protruding direction as the protrusion ( 60 ).
  • the horizontal ribs ( 61 , 62 ) are formed in an upper portion and a lower portion of the projection region ( 43 ) of the fin ( 36 ), and extends horizontally from the leading edge ( 38 ) of the fin ( 36 ) to the second protrusion ( 60 ) from the upwind side.
  • the two horizontal ribs ( 61 , 62 ) linearly extend in the projection direction of the projection region ( 43 ) of the fin ( 36 ) (i.e., the air passage direction).
  • the horizontal ribs ( 61 , 62 ) comprise reinforcement ribs which prevent the projection region ( 43 ) of the fin ( 36 ) from being bent toward the adjacent fin ( 36 ).
  • the horizontal ribs ( 61 , 62 ) further comprise heat-transfer portions which promote heat transfer between the fin ( 36 ) and air in an area located upwind of the intermediate region ( 42 ).
  • the horizontal ribs ( 61 , 62 ) which extend from the projection region ( 43 ) to the intermediate region ( 42 ) of the fin ( 36 ) are provided in the present embodiment.
  • the air before flowing in between the fins ( 36 ) can be cooled and dehumidified.
  • the accumulation of frost on the surface of the intermediate region ( 42 ) of the fin ( 36 ) is reduced, and therefore, it is possible to prevent a reduction in heat-transfer rate of the fin ( 36 ) due to the accumulation of frost, and an increase in flow pass resistance of the air passages ( 40 ).
  • the first and second embodiments of the present invention may have the following configurations.
  • the locations of the spacers ( 48 ) are not limited to the insertion region ( 40 ) and the extension region ( 41 ) of the fin body ( 36 a ), but the spacer ( 48 ) may be formed only in the insertion region ( 40 ) of the fin body ( 36 a ), or in the extension region ( 41 ) of the fin body ( 36 a ).
  • the number of spacers ( 48 ) of the insertion region ( 40 ) and the extension region ( 41 ) is not limited as described in the first and second embodiments, but the spacer ( 48 ) may be provided so as to correspond to every other flat tube ( 33 ), for example.
  • the spacers ( 48 ) of the insertion region ( 40 ) of the second embodiment may be provided at only one side of the projection region ( 43 ).
  • the shape of the spacer ( 48 ) is not limited to a trapezoidal shape in the first aspect of the invention, for example.
  • the spacer ( 48 ) of the insertion region ( 40 ) and the spacer ( 48 ) of the projection region ( 43 ) in the third embodiment do not necessarily have to be formed in the middle portion through which the middle line between the flat tubes ( 33 ) passes, and may be located closer to one of the flat tubes ( 33 ).
  • the protrusion ( 60 ) of the extension region ( 41 ) of the third embodiment may be the louver ( 50 ) of the first embodiment.
  • the rib ( 48 d ) of the fourth embodiment may be provided at only the spacer ( 48 ), and may not be provided at the main body ( 36 c ) of the fin body ( 36 a ).
  • the present invention is useful for heat exchangers having a flat tube and a fin, and air conditioners having the heat exchangers.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
US13/979,108 2011-01-21 2012-01-23 Heat exchanger and air conditioner Abandoned US20130284416A1 (en)

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JP2011011299 2011-01-21
JP2011011299 2011-01-21
PCT/JP2012/000383 WO2012098916A1 (ja) 2011-01-21 2012-01-23 熱交換器および空気調和機

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EP (1) EP2667140B1 (es)
JP (1) JP5177307B2 (es)
KR (1) KR101451055B1 (es)
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AU (1) AU2012208122B2 (es)
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USD775315S1 (en) * 2012-08-02 2016-12-27 Mitsubishi Electric Corporation Fin-plate for heat exchanger
US20180135900A1 (en) * 2015-04-27 2018-05-17 Daikin Industries, Ltd. Heat exchanger and air conditioner
US10082344B2 (en) 2015-03-02 2018-09-25 Mitsubishi Electric Coporation Fin-and-tube heat exchanger and refrigeration cycle apparatus including the same
US20190264981A1 (en) * 2016-09-23 2019-08-29 Daikin Industries, Ltd. Heat exchanger
US10443956B2 (en) 2016-04-20 2019-10-15 Daikin Industries, Ltd. Heat exchanger
US20190360755A1 (en) * 2015-12-16 2019-11-28 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Heat exchanger coil and heat exchanger having the same
US10563924B2 (en) * 2014-09-08 2020-02-18 Mitsubishi Electric Corporation Heat exchanger and method for manufacturing plate-shaped fins for heat exchanger
US11384997B2 (en) * 2018-06-13 2022-07-12 Mitsubishi Electric Corporation Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus
US11391521B2 (en) 2018-06-13 2022-07-19 Mitsubishi Electric Corporation Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus
US11519676B2 (en) * 2019-06-27 2022-12-06 Samsung Electronics Co., Ltd. Heat exchanger and refrigerator including the same

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JP5445876B2 (ja) * 2012-08-21 2014-03-19 日高精機株式会社 扁平チューブ用フィンの製造装置
JP5522419B2 (ja) * 2012-08-30 2014-06-18 日高精機株式会社 扁平チューブ用フィンの製造装置
WO2015058452A1 (zh) * 2013-10-21 2015-04-30 美的集团股份有限公司 换热器翅片及采用该换热器翅片的换热器
JP6036788B2 (ja) * 2014-10-27 2016-11-30 ダイキン工業株式会社 熱交換器
JP6413760B2 (ja) * 2014-12-25 2018-10-31 株式会社富士通ゼネラル 熱交換器及びそれを用いた熱交換器ユニット
JP6415721B2 (ja) * 2015-07-07 2018-10-31 三菱電機株式会社 熱交換器、冷凍サイクル装置および熱交換器の製造方法
FR3038976B1 (fr) * 2015-07-17 2019-08-09 Valeo Systemes Thermiques Echangeur de chaleur a ailettes comprenant des persiennes ameliorees
CN106288911B (zh) * 2016-09-07 2018-08-14 珠海格力电器股份有限公司 一种翅片及包括该翅片的散热器
KR101888302B1 (ko) * 2017-04-07 2018-08-13 한국교통대학교산학협력단 확장 핀 칼라와 비대칭 핀 칼라를 구비한 수평형 마이크로채널 열교환기 및 그 장치의 제조 방법
CN109186304A (zh) * 2018-09-30 2019-01-11 珠海格力电器股份有限公司 一种翅片及具有其的热交换器

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USD749201S1 (en) * 2012-08-02 2016-02-09 Mitsubishi Electric Corporation Fin-plate for heat exchanger
USD775315S1 (en) * 2012-08-02 2016-12-27 Mitsubishi Electric Corporation Fin-plate for heat exchanger
US10563924B2 (en) * 2014-09-08 2020-02-18 Mitsubishi Electric Corporation Heat exchanger and method for manufacturing plate-shaped fins for heat exchanger
US10082344B2 (en) 2015-03-02 2018-09-25 Mitsubishi Electric Coporation Fin-and-tube heat exchanger and refrigeration cycle apparatus including the same
US20180135900A1 (en) * 2015-04-27 2018-05-17 Daikin Industries, Ltd. Heat exchanger and air conditioner
US20190360755A1 (en) * 2015-12-16 2019-11-28 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Heat exchanger coil and heat exchanger having the same
US10739076B2 (en) * 2015-12-16 2020-08-11 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Heat exchanger coil and heat exchanger having the same
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US20190264981A1 (en) * 2016-09-23 2019-08-29 Daikin Industries, Ltd. Heat exchanger
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US11391521B2 (en) 2018-06-13 2022-07-19 Mitsubishi Electric Corporation Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus
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Publication number Publication date
WO2012098916A1 (ja) 2012-07-26
JP2012163318A (ja) 2012-08-30
KR101451055B1 (ko) 2014-10-16
EP2667140B1 (en) 2015-10-28
EP2667140A1 (en) 2013-11-27
CN103403487B (zh) 2015-11-25
AU2012208122A1 (en) 2012-07-26
EP2667140A4 (en) 2014-07-09
JP5177307B2 (ja) 2013-04-03
KR20130127500A (ko) 2013-11-22
AU2012208122B2 (en) 2015-05-28
ES2558783T3 (es) 2016-02-08
CN103403487A (zh) 2013-11-20

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