WO2017038834A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

Info

Publication number
WO2017038834A1
WO2017038834A1 PCT/JP2016/075361 JP2016075361W WO2017038834A1 WO 2017038834 A1 WO2017038834 A1 WO 2017038834A1 JP 2016075361 W JP2016075361 W JP 2016075361W WO 2017038834 A1 WO2017038834 A1 WO 2017038834A1
Authority
WO
WIPO (PCT)
Prior art keywords
bent portion
bent
flat tube
heat exchanger
distance
Prior art date
Application number
PCT/JP2016/075361
Other languages
French (fr)
Japanese (ja)
Inventor
中野　寛之
透 安東
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Publication of WO2017038834A1 publication Critical patent/WO2017038834A1/en

Links

Images

Classifications

    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a heat exchanger.
  • Patent Document 1 Japanese Patent Laid-Open No. 2015-31491
  • the flat tube When the flat tube is press-fitted into the fin, the flat tube may be difficult to insert into the fin due to the frictional force between the flat tube and the fin. In this case, if the flat tube is forcibly pressed into the fin, the flat tube and the fin may be damaged.
  • An object of the present invention is to provide a heat exchanger that improves the ease of attaching a flat tube and fins.
  • the heat exchanger includes a plurality of laminated fins and a plurality of flat tubes.
  • the plurality of flat tubes are arranged side by side in a crossing direction that intersects the stacking direction of the plurality of fins.
  • Each of the plurality of fins has a plurality of insertion portions.
  • Each of the plurality of flat tubes is inserted into the plurality of insertion portions.
  • At least one fin among the plurality of fins has a bent portion.
  • the bent portion is provided at an edge of at least one insertion portion among the plurality of insertion portions.
  • the bent portion includes a first bent portion and a second bent portion. The first bent portion is formed by bending a part of the edge portion.
  • the second bent portion is formed by bending another portion of the edge that is different from a portion.
  • the distance in the stacking direction between the bent portion and the second base is 0.2 to 0.9 times the distance in the intersecting direction of the flat tubes.
  • the first proximity portion is closest to the second bent portion among the first bent portions.
  • the second proximity portion is closest to the first bent portion among the second bent portions.
  • the flat tube inserted into at least one insertion portion is in close contact with the first proximity portion and the second proximity portion, and does not contact the first base portion and the second base portion.
  • the distance in the stacking direction between the first proximity portion and the first base, and the distance in the stacking direction between the second proximity portion and the second base are respectively in the crossing direction of the flat tubes.
  • the distance is 0.2 to 0.9 times. That is, each of the first proximity portion and the second proximity portion has a certain height.
  • the flat tube inserted in the insertion portion provided with the bent portion is in close contact with the first proximity portion and the second proximity portion as described above, but does not contact the first base portion and the second base portion. That is, when the flat tube is inserted into the insertion portion, the ease of insertion of the flat tube is affected by the first proximity portion and the second proximity portion rather than the first base portion and the second base portion that do not contact each other.
  • each of the first proximity portion and the second proximity portion is a bent portion and has a certain height, and thus moves in the crossing direction when the flat tube is inserted.
  • the frictional force between a flat tube and an insertion part can be reduced. Since the frictional force is reduced, the ease of attaching the flat tube and the fins can be improved. As a result, it can be expected that damage to the flat tube and the fins is suppressed.
  • the fin in which the 1st bending part and the 2nd bending part were formed can ensure the fin pitch which is a space
  • the bending angle of each of the first bent portion and the second bent portion with respect to the plane including the intersecting direction and the orthogonal direction is 80 ° to 90 °.
  • the bending angle of each of the first bent portion and the second bent portion with respect to the plane including the intersecting direction and the orthogonal direction is 80 ° to 90 °. That is, the first bent portion and the second bent portion are formed in a tapered shape from the first base portion and the second base portion to the first adjacent portion and the second adjacent portion. Therefore, each of the first bent portion and the second bent portion can move in the crossing direction when the flat tube is inserted. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
  • the length in the stacking direction of the portion of the first bent portion that does not contact the flat tube is 0.4 mm to 1.2 mm.
  • the length in the stacking direction of the portion of the second bent portion that does not contact the flat tube is 0.4 mm to 1.2 mm.
  • the flat tube does not contact the vicinity of the first base and the vicinity of the second base. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
  • each of the first bent portion and the second bent portion has a curved portion that follows the proximity portion.
  • each of the first bent portion and the second bent portion has a curved portion
  • the fin on which the first bent portion and the second bent portion are formed is The fin pitch can be easily secured by the curved portion of the first bent portion and the bent portion of the second bent portion.
  • At least one fin has a bent portion provided at each edge of the plurality of insertion portions.
  • the heat exchanger according to the fifth aspect of the present invention it is possible to improve the ease of attaching the flat tube and the fin in all the insertion portions provided in at least one fin.
  • each of the plurality of fins has a bent portion provided at each edge of the plurality of insertion portions.
  • the heat exchanger according to the first aspect of the present invention it is possible to improve the ease of attaching the flat tube and the fin by reducing the frictional force between the flat tube and the insertion portion. As a result, it can be expected that damage to the flat tube and the fins is suppressed.
  • the first bent portion and the second bent portion are formed in a tapered shape, they can move in the crossing direction when the flat tube is inserted. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
  • the flat tube does not contact the vicinity of the first base and the vicinity of the second base. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
  • each of the first bent portion and the second bent portion has a curved portion
  • the fin on which the first bent portion and the second bent portion are formed is The fin pitch can be easily secured by the curved portion of the first bent portion and the bent portion of the second bent portion.
  • the heat exchanger according to the fifth aspect of the present invention it is possible to improve the ease of attaching the flat tube and the fin in all the insertion portions provided in at least one fin.
  • FIG. 1 shows a configuration of an air conditioner 100 including an outdoor heat exchanger 400 as an example of a heat exchanger according to an embodiment of the present invention. It is a figure explaining.
  • the air conditioner 100 includes an air conditioning outdoor unit 200 as a heat source side unit and an air conditioning indoor unit 300 as a use side unit.
  • the air-conditioning outdoor unit 200 and the air-conditioning indoor unit 300 are connected to each other via a liquid refrigerant refrigerant communication pipe 101 and a gas refrigerant refrigerant communication pipe 102.
  • the refrigerant circuit of the air conditioner 100 includes an air conditioning outdoor unit 200, an air conditioning indoor unit 300, a refrigerant communication pipe 101, and a refrigerant communication pipe 102. More specifically, the refrigerant circuit includes an expansion valve 203, a compressor 204, a four-way switching valve 205, an accumulator 206, an indoor heat exchanger 301, and an outdoor heat exchanger 400.
  • the air conditioning indoor unit 300 includes an indoor heat exchanger 301 and an indoor fan 302.
  • the indoor heat exchanger 301 is, for example, a cross fin type fin-and-tube heat exchanger configured by heat transfer tubes and a large number of fins.
  • the indoor heat exchanger 301 functions as a refrigerant evaporator during cooling operation to cool indoor air, and functions as a refrigerant condenser during heating operation to heat indoor air.
  • the air conditioning outdoor unit 200 includes a gas refrigerant pipe 201, a liquid refrigerant pipe 202, an expansion valve 203, a compressor 204, a four-way switching valve 205, an accumulator 206, an outdoor unit.
  • the fan 207 and the outdoor heat exchanger 400 are included.
  • One end of the gas refrigerant pipe 201 is connected to the gas side end of the outdoor heat exchanger 400, and the other end of the gas refrigerant pipe 201 is connected to the four-way switching valve 205.
  • One end of the liquid refrigerant pipe 202 is connected to the liquid side end of the outdoor heat exchanger 400, and the other end of the liquid refrigerant pipe 202 is connected to the expansion valve 203.
  • the expansion valve 203 is a mechanism that depressurizes the refrigerant.
  • the expansion valve 203 is provided between the outdoor heat exchanger 400 and the refrigerant communication pipe 101.
  • the compressor 204 is a hermetic compressor driven by a compressor motor.
  • the four-way switching valve 205 is a mechanism that switches the direction in which the refrigerant flows.
  • the four-way switching valve 205 connects the refrigerant pipe 201 on the discharge side of the compressor 204 and the gas refrigerant pipe 201 and passes through the accumulator 206.
  • the refrigerant pipe on the suction side of the compressor 204 and the refrigerant communication pipe 102 are connected.
  • the four-way switching valve 205 connects the refrigerant pipe on the discharge side of the compressor 204 and the refrigerant communication pipe 102 and also accumulator 206. Then, the refrigerant pipe on the suction side of the compressor 204 and the gas refrigerant pipe 201 are connected.
  • the accumulator 206 is provided between the compressor 204 and the four-way switching valve 205.
  • the accumulator 206 divides the refrigerant into a gas phase and a liquid phase.
  • the outdoor fan 207 supplies outdoor air to the outdoor heat exchanger 400.
  • the opening degree of the expansion valve 203 is determined by the refrigerant overheating at the outlet of the indoor heat exchanger 301 (that is, the gas side of the indoor heat exchanger 301). The degree is adjusted to be constant.
  • the connection state of the four-way switching valve 205 during the cooling operation is as already described.
  • the refrigerant discharged from the compressor 204 flows into the outdoor heat exchanger 400 through the four-way switching valve 205, dissipates heat to the outdoor air, and condenses.
  • the refrigerant that has flowed out of the outdoor heat exchanger 400 expands when it passes through the expansion valve 203. Then, it flows into the indoor heat exchanger 301, absorbs heat from the indoor air, and evaporates.
  • the opening degree of the expansion valve 203 is adjusted so that the degree of supercooling of the refrigerant at the outlet of the indoor heat exchanger 301 becomes constant at the target value of the degree of supercooling.
  • the connection state of the four-way switching valve 205 during the heating operation is as already described.
  • the refrigerant discharged from the compressor 204 flows into the indoor heat exchanger 301 through the four-way switching valve 205, dissipates heat to the indoor air, and condenses.
  • the refrigerant that has flowed out of the indoor heat exchanger 301 expands when it passes through the expansion valve 203. Then, it flows into the outdoor heat exchanger 400, absorbs heat from the outdoor air, and evaporates.
  • the refrigerant flowing out of the outdoor heat exchanger 400 passes through the four-way switching valve 205 and is again sucked into the compressor 204 and compressed.
  • FIG. 2 is an external perspective view of the outdoor heat exchanger 400.
  • the outdoor heat exchanger 400 includes a heat exchange unit 410, an entrance / exit header collecting pipe 420, and a folded header collecting pipe 430.
  • the heat exchanging section 410, the inlet / outlet header collecting pipe 420, and the folded header collecting pipe 430 are joined to each other by soldering.
  • a stacking direction in which a plurality of fins 411 described later are stacked is defined as an X-axis direction.
  • the longitudinal direction of each fin 411 that is, the direction in which a plurality of flat tubes 412 described later are arranged side by side is defined as the Y-axis direction.
  • a short direction of each fin 411, that is, an orthogonal direction orthogonal to a plane including the X-axis direction and the Y-axis direction is defined as a Z-axis direction.
  • the heat exchanging unit 410 exchanges heat between the outdoor air and the refrigerant.
  • the heat exchanging unit 410 includes a plurality of fins 411 and a plurality of flat tubes 412.
  • the plurality of fins 411 and the plurality of flat tubes 412 are made of aluminum or aluminum alloy.
  • the plurality of fins 411 are stacked in the X-axis direction.
  • the plurality of flat tubes 412 are arranged side by side in the Y-axis direction.
  • the entrance / exit header collecting pipe 420 is provided on one end side in the X-axis direction of the heat exchanging section 410.
  • the entrance / exit header collecting pipe 420 fixes the vicinity of one end of the flat pipe 412 in the X-axis direction.
  • the internal space of the inlet / outlet header collecting pipe 420 communicates with the internal flow path of the flat pipe 412.
  • the folded header collecting pipe 430 is provided on the other end side in the X-axis direction of the heat exchange unit 410.
  • the folded header collecting pipe 430 fixes the vicinity of the other end in the X-axis direction of the flat tube 412 (that is, the vicinity of the end opposite to the inlet / outlet header collecting pipe 420 side).
  • the internal space of the folded header collecting pipe 430 communicates with the internal flow path of the flat pipe 412.
  • FIG. 3 is a diagram for explaining the heat exchanger 410.
  • FIG. 3 is an enlarged view of a part of the YZ cross section in the region A of FIG.
  • the structure of the plurality of fins 411 is common to each other. Therefore, here, the structure of the fin 411 will be described as an example.
  • the fin 411 is a plate-like member.
  • the shape of the fin 411 is substantially rectangular as a whole. More specifically, the rectangle has a long side in the Y-axis direction and a short side in the Z-axis direction.
  • the fin 411 has a plurality of cutout portions 421 as an example of an insertion portion.
  • the plurality of notches 421 are formed on the windward side of the air flow (that is, the minus side in the Z-axis direction).
  • the plurality of notches 421 are formed at intervals in the Y-axis direction.
  • Each of the plurality of flat tubes 412 is inserted into the plurality of notches 421.
  • the plurality of notches 421 are formed in a U shape.
  • the fin 411 has a plurality of bent portions 460.
  • the plurality of bent portions 460 are provided at the respective edge portions of the plurality of cutout portions 421.
  • each of the plurality of bent portions 460 includes a first bent portion 440 in which a part of the edge portion is bent, and another portion of the edge portion that is different from the part is bent.
  • the second bent portion 450 is provided separately from the second bent portion 450, and the first bent portion 440 and the second bent portion 450 are opposed to each other in the Y-axis direction. is doing.
  • the width of the first bent portion 440 and the second bent portion 450 in the Z-axis direction is substantially the same as the side surface of the flat tube 412, that is, the width of the flat portion in the Z-axis direction.
  • the plurality of flat tubes 412 function as heat transfer tubes.
  • the refrigerant flows inside each flat tube 412, and each flat tube 412 transmits heat moving between the fins 411 and outdoor air to the refrigerant.
  • FIG. 4 is a diagram illustrating an example of the bent part 460.
  • FIG. 4 shows a sectional view taken along the line IV-IV in FIG. 3 and a partially enlarged view of a region B in the sectional view taken along the line IV-IV.
  • the vicinity of the portion sandwiched between the first bent portion 440 and the second bent portion 450 is indicated by a solid line, and the other portion is indicated by a broken line.
  • the distance D 1 indicates a distance in the X-axis direction between a first proximity portion 442 described later and a first base portion 441 described later.
  • the distance D 2 indicates the distance in the X-axis direction between a second proximity portion 452 described later and a second base 451 described later.
  • the distance D 3 indicates the distance of the flat tube 412 in the Y-axis direction.
  • the distance D 4 indicates the length in the X-axis direction of the portion of the first bent portion 440 that does not contact the flat tube 412, that is, the distance in the X-axis direction between the first base portion 441 and the first lowest contact portion 444. .
  • the first lowest contact portion 444 is a portion closest to the first base portion 441 among the portions in contact with the flat tube 412 in the first bent portion 440.
  • the distance D 5 indicates the length in the X-axis direction of the portion of the second bent portion 450 that does not contact the flat tube 412, that is, the distance in the X-axis direction between the second base portion 451 and the second lowest contact portion 454.
  • the second lowest contact portion 454 is the portion of the second bent portion 450 that is closest to the second base portion 451 among the portions that contact the flat tube 412.
  • the first bent portion 440 is formed in a bowl shape as a whole.
  • the first bent portion 440 includes a first base portion 441, a first proximity portion 442, and a first bending portion 443.
  • the first proximity portion 442 is a portion of the first bent portion 440 that is closest to the second bent portion 450.
  • the first bending portion 443 is a portion following the first proximity portion 442. That is, it is a tip portion of the first bent portion 440.
  • the first curved portion 443 is curved on the side opposite to the second bent portion 450 side.
  • the second bent portion 450 is formed in a bowl shape as a whole.
  • the second bent portion 450 includes a second base portion 451, a second proximity portion 452, and a second curved portion 453.
  • the second bent portion 450 is a portion of the second bent portion 450 that is closest to the first bent portion 440.
  • the second bending portion 453 is a portion following the second proximity portion 452. That is, it is a tip portion of the second bent portion 450.
  • the second curved portion 453 is curved on the side opposite to the first bent portion 440 side.
  • the distance in the Y-axis direction between the first bent portion 440 and the second bent portion 450 is shorter from the first base portion 441 and the second base portion 451 to the first proximity portion 442 and the second proximity portion 452. That is, the width of the section in the Y-axis direction is tapered.
  • the distance D 1 is 0.9 times 0.2 times the distance D 3. Preferably, it is 0.3 to 0.9 times.
  • the distance D 2 is 0.2 to 0.9 times the distance D 3 . Preferably, it is 0.3 to 0.9 times.
  • the bending angle ⁇ 1 of the first bent portion 440 with respect to the plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °.
  • the bending angle ⁇ 2 of the second bent portion 450 with respect to the plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °.
  • the distance D 4 is 1.2mm from 0.4 mm.
  • the distance D 5 is 1.2mm from 0.4 mm.
  • the flat tube 412 is joined to a part of each of the first bent portion 440 and the second bent portion 450. More specifically, the vicinity of the first bent portion 440 including the first bent portion 440 and the vicinity of the second adjacent portion 452 including the second adjacent portion 452 are joined.
  • the flat tube 412 is not joined to the first base portion 441 and the second base portion 451.
  • FIG. 5 is a diagram for explaining a bent part 460 before and after insertion of the flat tube 412.
  • FIG. 5 corresponds to an enlarged portion of region B in FIG.
  • the two-dot chain line indicates the bent portion 460 before the flat tube 412 is inserted
  • the solid line indicates the bent portion 460 after the flat tube 412 is inserted.
  • the flat tube 412 is omitted from the viewpoint of easy viewing of the drawing.
  • the distance D 1 ′ indicates the distance in the X-axis direction between the first proximity portion 442 and the first base portion 441 in the first bent portion 440 before the flat tube 412 is inserted.
  • the distance D 2 ′ indicates the distance in the X-axis direction between the second proximity portion 452 and the second base portion 451 in the second bent portion 450 before the flat tube 412 is inserted.
  • the distance D 3 ′ indicates the distance in the Y-axis direction between the first proximity portion 442 and the second proximity portion 452 in the bent portion 460 before the flat tube 412 is inserted.
  • the distance D 6 indicates the distance in the X-axis direction between the first proximity portion 442 and the first vertex portion 445 in the first bent portion 440 after the flat tube 412 is inserted.
  • the first vertex portion 445 is the highest portion in the X-axis direction in the first bent portion 440. That is, it is a portion farthest in the X-axis direction from the first base portion 441 in the first bent portion 440.
  • the distance D 6 ′ indicates the distance in the X-axis direction between the first proximity portion 442 and the first vertex portion 445 in the first bent portion 440 before the flat tube 412 is inserted.
  • the distance D 7 indicates the distance in the X-axis direction between the second proximity portion 452 and the second vertex portion 455 in the second bent portion 450 after the flat tube 412 is inserted.
  • the second vertex portion 455 is the highest portion of the second bent portion 450 in the X-axis direction. That is, the second bent portion 450 is the portion farthest from the second base 451 in the X-axis direction.
  • a distance D 7 ′ indicates a distance in the X-axis direction between the second proximity portion 452 and the second apex portion 455 in the second bent portion 450 before the flat tube 412 is inserted.
  • the bending angle ⁇ 1 ′ is a bending angle of the first bent portion 440 before the flat tube 412 is inserted with respect to a plane including the Y-axis direction and the Z-axis direction.
  • the bending angle ⁇ 2 ′ is a bending angle of the second bent portion 450 before the flat tube 412 is inserted with respect to a plane including the Y-axis direction and the Z-axis direction.
  • the distance between the first proximity portion 442 and the second proximity portion 452 is increased. That is, the distance D 3 is longer than the distance D 3 ′.
  • the first bent portion 440 and the second bent portion 450 become steep. That is, the bending angle ⁇ 1 is larger than the bending angle ⁇ 1 ′, and the bending angle ⁇ 2 is larger than the bending angle ⁇ 2 ′.
  • the flat tube 412 is press-fitted, the plurality of fins 411 are compressed in the X-axis direction as a whole. Thereby, the 1st bending part 443 and the 2nd bending part 453 deform
  • the distance D 1 becomes longer than the distance D 1 ′, whereas the first curved portion 443 is bent, so that the distance D 6 becomes the distance. Shorter than D 6 ′.
  • the distance D to 2 that is longer than the distance D 2 ', since the second bending portion 453 is bent, the distance D 7 is distance D 7 It becomes shorter than ⁇ .
  • the sum of the distance D 1 and the distance D 6 is substantially equal to the sum of the distance D 1 'and the distance D 6'.
  • the sum of the distances D 2 and the distance D 7 is substantially equal to the sum of the distance D 2 'and the distance D 7'.
  • the sum of the distance D 1 and the distance D 6 and the sum of the distance D 2 and the distance D 7 correspond to an interval between adjacent fins, that is, a fin pitch.
  • each of the distance D 1 and the distance D 2 is 0.2 to 0.9 times the distance D 3 . That is, each of the first proximity portion 442 and the second proximity portion 452 has a certain height.
  • the flat tube 412 inserted into the notch 421 provided with the bent portion 460 is in close contact with the first proximity portion 442 and the second proximity portion 452, but does not contact the first base portion 441 and the second base portion 451. That is, when the flat tube 412 is inserted into the notch portion 421, the flat tube 412 is more easily inserted than the first base portion 441 and the second base portion 451 that are not in contact with each other. 2 influenced by the proximity portion 452.
  • Each of the first proximity portion 442 and the second proximity portion 452 is a bent portion and has a certain height as described above, and therefore moves in the Y axis direction when the flat tube 412 is inserted. . That is, the 1st proximity part 442 and the 2nd proximity part 452 bear the role which reduces the pressure with respect to the fin 411 when the flat tube 412 is press-fit. Thereby, the frictional force between the flat tube 412 and the notch part 421 can be reduced. Since the frictional force is reduced, the ease of attaching the flat tube 412 and the fin 411 can be improved. As a result, it can be expected that damage to the flat tubes 412 and the fins 411 is suppressed.
  • each of the first proximity portion 442 and the second proximity portion 452 has a certain height, the fin pitch can be secured by the first proximity portion 442 and the second proximity portion 452. Since the first proximity portion 442 and the second proximity portion 452 also serve to ensure the fin pitch, it is not necessary to separately provide a portion for ensuring the fin pitch.
  • the fin pitch can be kept substantially constant before and after insertion of the flat tube 412.
  • the bending angle ⁇ 1 of the first bent portion 440 with respect to the plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °
  • the second bent portion A bending angle ⁇ 2 of 450 with respect to a plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °. That is, the first bent portion 440 and the second bent portion 450 are formed in a tapered shape from the first base portion 441 and the second base portion 451 to the first proximity portion 442 and the second proximity portion 452.
  • each of the first bent portion 440 and the second bent portion 450 can move in the Y-axis direction with respect to each other when the flat tube 412 is inserted. As a result, the frictional force between the flat tube 412 and the notch 421 can be reduced.
  • the distance D 4 is 0.4 mm to 1.2 mm
  • the distance D 5 is 0.4 mm to 1.2 mm. That is, the flat tube 412 does not contact the vicinity of the first base portion 441 and the vicinity of the second base portion 451. In other words, the flat tube 412 is joined to the first bent portion 440 and the second bent portion 450 at a certain distance from the first base portion 441 and the second base portion 451. Thereby, the pressure with respect to the fin 411 when the flat tube 412 is press-fit can be reduced more.
  • the first bent portion 440 has a first bent portion 443 and the second bent portion 450 has a second bent portion 453.
  • the fin 411 in which the first bent portion 440 and the second bent portion 450 are formed can more easily secure the fin pitch by the first bent portion 443 and the second bent portion 453.
  • all the fins 411 have the bent portions 460 provided at the respective edge portions of all the notches 421. Therefore, in each of all the fins 411, the ease of attachment of the flat tube 412 and the fin 411 can be improved.
  • first bent portion 440 and the second bent portion 450 are opposed to each other, but may not be opposed.
  • FIG. 6 is a diagram for explaining another example of the bent portion 460.
  • the cross-sectional area in FIG. 6 corresponds to the cross-sectional area in FIG. That is, FIG. 6 corresponds to an enlarged view of a part of the YZ cross section of the region A in FIG.
  • the width in the Z-axis direction of the first bent portion 440 and the second bent portion 450 of this modification is substantially half of the width in the Z-axis direction of the first bent portion 440 and the second bent portion 450 in FIG. It is.
  • the first bent portion 440 is formed on the end portion side of the notch portion 421 on the Z axis direction minus side
  • the second bent portion 450 is formed on the end portion side of the notch portion 421 on the Z axis direction plus side. Yes. That is, the first bent portion 440 and the second bent portion 450 are not opposed to each other and are formed at positions shifted from each other.
  • each of the first bent portion 440 and the second bent portion 450 is formed in a region shifted from each other in the Z-axis direction, the distance between the first bent portion 440 and the second bent portion 450 in the X-axis direction is set. It becomes easy to secure.
  • the configuration of this modification is particularly effective when the width of the flat tube 412 is relatively thin.
  • the 1st bending part 440 and the 2nd bending part 450 do not need to be formed separately. That is, the first bent part 440 and the second bent part 450 may be formed integrally.
  • the bent portion 460 may be formed in a U shape along the edge of the notch 421.
  • all the fins 411 have the bent portions 460 provided at the respective edges of all the cutout portions 421, that is, the same number of bent portions 460 as the number of the cutout portions 421.
  • some of the fins 411 may have a smaller number of bent portions 460 than the number of the notched portions 421 or may not have the bent portions 460 at all. That is, at least one fin may have the same number of bent portions 460 as the number of notches 421.
  • the widths in the Y-axis direction of all the first bent portions 440 and the second bent portions 450 of the fins can be increased.
  • the ease of attaching the flat tube 412 and the fins 411 can be improved.
  • the attachment ease of the flat tube 412 and the fin 411 can be improved in the part in which the bending part 460 was provided.
  • the fins 411 having the same number of bent portions 460 as the number of the notches 421 may not be present. That is, at least one fin 411 may have at least one bent portion 460. In this case, it is possible to improve the ease of attaching the flat tube 412 and the fin 411 in the portion of the at least one fin 411 where the bent portion 460 is provided.
  • the notch portion 421 is taken as an example of the insertion portion, but is not limited thereto.
  • An opening that matches the shape of the flat tube 412 may be formed as the insertion portion.

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)

Abstract

Provided is a heat exchanger which improves the degree of ease of attaching fins and flat tubes. This outdoor heat exchanger (400) is provided with a plurality of fins (411) and a plurality of flat tubes (412). Each of the plurality of fins (411) is provided with a plurality of cut-out portions (421). At least one of the fins (411) is provided with bent portions (460) provided to edges of at least one of the cut-out portions (421). The bent portions (460) include a first bent portion (440) and a second bent portion (450). When viewed from the Y-axis direction, the distance (D1) between a first close portion (442) and a first base portion (441) in the X-axis direction, and the distance (D2) between a second close portion (452) and a second base portion (451) in the X-axis direction are respectively 0.2 to 0.9 times the distance (D3) across a flat tube (412) in the Z-axis direction. A flat tube (412) which has been inserted into the at least one cut-out portion (421) is in close contact with the first close portion (442) and the second close portion (452), and is not in contact with the first base portion (441) and the second base portion (451).

Description

熱交換器Heat exchanger
　本発明は、熱交換器に関する。 The present invention relates to a heat exchanger.
　第１ヘッダ集合管、第２ヘッダ集合管、扁平管、およびフィンが互いにロウ付けにより接合されてなる熱交換器が知られている（特許文献１（特開２０１５－３１４９１号公報）参照）。 A heat exchanger in which a first header collecting tube, a second header collecting tube, a flat tube, and fins are joined to each other by brazing is known (see Patent Document 1 (Japanese Patent Laid-Open No. 2015-31491)).
　扁平管がフィンに圧入される場合に、扁平管とフィンの間の摩擦力によって、扁平管がフィンに挿入され難い場合がある。この場合に、扁平管が強引にフィンに圧入されると、扁平管およびフィンが破損する恐れがある。 When the flat tube is press-fitted into the fin, the flat tube may be difficult to insert into the fin due to the frictional force between the flat tube and the fin. In this case, if the flat tube is forcibly pressed into the fin, the flat tube and the fin may be damaged.
　本発明の課題は、扁平管とフィンの取り付け易さを向上させた熱交換器を提供することである。 An object of the present invention is to provide a heat exchanger that improves the ease of attaching a flat tube and fins.
　本発明の第１観点に係る熱交換器は、積層された複数のフィンと、複数の扁平管とを備える。複数の扁平管は、複数のフィンの積層方向に対して交差する交差方向に並んで配置されている。複数のフィンのそれぞれは、複数の挿入部を有する。複数の挿入部には、複数の扁平管のそれぞれが挿入されている。複数のフィンのうち少なくとも１つのフィンは、折曲部を有する。折曲部は、複数の挿入部のうち少なくとも１つの挿入部の縁部に設けられている。折曲部は、第１折曲部と第２折曲部を含む。第１折曲部は、縁部の一部が折り曲げられてなる。第２折曲部は、縁部の、一部とは異なる他部が折り曲げられてなる。積層方向と交差方向とを含む平面に直交する直交方向から見た場合に、第１近接部と第１折曲部の第１基部との積層方向の距離、および、第２近接部と第２折曲部の第２基部との積層方向の距離はそれぞれ、扁平管の交差方向の距離の０．２倍から０．９倍である。第１近接部は、第１折曲部のうち第２折曲部に最も近接する。第２近接部は、第２折曲部のうち第１折曲部に最も近接する。少なくとも１つの挿入部に挿入された扁平管は、第１近接部と第２近接部に密着し、第１基部と第２基部に接しない。 The heat exchanger according to the first aspect of the present invention includes a plurality of laminated fins and a plurality of flat tubes. The plurality of flat tubes are arranged side by side in a crossing direction that intersects the stacking direction of the plurality of fins. Each of the plurality of fins has a plurality of insertion portions. Each of the plurality of flat tubes is inserted into the plurality of insertion portions. At least one fin among the plurality of fins has a bent portion. The bent portion is provided at an edge of at least one insertion portion among the plurality of insertion portions. The bent portion includes a first bent portion and a second bent portion. The first bent portion is formed by bending a part of the edge portion. The second bent portion is formed by bending another portion of the edge that is different from a portion. The distance in the stacking direction between the first proximity portion and the first base of the first bent portion, and the second proximity portion and the second when viewed from an orthogonal direction orthogonal to the plane including the stacking direction and the crossing direction. The distance in the stacking direction between the bent portion and the second base is 0.2 to 0.9 times the distance in the intersecting direction of the flat tubes. The first proximity portion is closest to the second bent portion among the first bent portions. The second proximity portion is closest to the first bent portion among the second bent portions. The flat tube inserted into at least one insertion portion is in close contact with the first proximity portion and the second proximity portion, and does not contact the first base portion and the second base portion.
　本発明の第１観点に係る熱交換器では、第１近接部と第１基部の積層方向の距離、および第２近接部と第２基部の積層方向の距離はそれぞれ、扁平管の交差方向の距離の０．２倍から０．９倍である。すなわち、第１近接部および第２近接部のそれぞれは、ある程度の高さを有する。折曲部が設けられた挿入部に挿入された扁平管は、上述のような第１近接部と第２近接部に密着する一方で、第１基部と第２基部に接しない。つまり、扁平管が挿入部に挿入される場合には、扁平管の挿入し易さは、接触しない第１基部と第２基部というよりも、第１近接部と第２近接部に影響される。第１近接部および第２近接部のそれぞれは、上述のように、折り曲げられた部分であり、かつ、ある程度の高さを有するので、扁平管の挿入時に、互いに交差方向に動く。これにより、扁平管と挿入部の間の摩擦力を低減させることができる。摩擦力が低減されるので、扁平管とフィンの取り付け易さを向上させることができる。その結果、扁平管およびフィンの破損を抑制することが期待できる。また、第１折曲部および第２折曲部が形成されたフィンは、第１折曲部および第２折曲部によって、隣接するフィンとの間隔であるフィンピッチを確保することができる。したがって、フィンピッチを確保する部分を別途設けなくてもよい。 In the heat exchanger according to the first aspect of the present invention, the distance in the stacking direction between the first proximity portion and the first base, and the distance in the stacking direction between the second proximity portion and the second base are respectively in the crossing direction of the flat tubes. The distance is 0.2 to 0.9 times. That is, each of the first proximity portion and the second proximity portion has a certain height. The flat tube inserted in the insertion portion provided with the bent portion is in close contact with the first proximity portion and the second proximity portion as described above, but does not contact the first base portion and the second base portion. That is, when the flat tube is inserted into the insertion portion, the ease of insertion of the flat tube is affected by the first proximity portion and the second proximity portion rather than the first base portion and the second base portion that do not contact each other. . As described above, each of the first proximity portion and the second proximity portion is a bent portion and has a certain height, and thus moves in the crossing direction when the flat tube is inserted. Thereby, the frictional force between a flat tube and an insertion part can be reduced. Since the frictional force is reduced, the ease of attaching the flat tube and the fins can be improved. As a result, it can be expected that damage to the flat tube and the fins is suppressed. Moreover, the fin in which the 1st bending part and the 2nd bending part were formed can ensure the fin pitch which is a space | interval with an adjacent fin by the 1st bending part and the 2nd bending part. Therefore, it is not necessary to separately provide a portion for securing the fin pitch.
　本発明の第２観点に係る熱交換器においては、第１折曲部および第２折曲部のそれぞれの、交差方向と直交方向を含む平面に対する折り曲げ角度は、８０°から９０°である。 In the heat exchanger according to the second aspect of the present invention, the bending angle of each of the first bent portion and the second bent portion with respect to the plane including the intersecting direction and the orthogonal direction is 80 ° to 90 °.
　本発明の第２観点に係る熱交換器では、第１折曲部および第２折曲部のそれぞれの、交差方向と直交方向を含む平面に対する折り曲げ角度は、８０°から９０°である。すなわち、第１折曲部および第２折曲部は、第１基部および第２基部から第１近接部および第２近接部にかけて、テーパ状に形成されている。したがって、第１折曲部および第２折曲部のそれぞれは、扁平管の挿入時に、互いに交差方向に動くことができる。結果として、扁平管と挿入部の間の摩擦力を低減させることができる。 In the heat exchanger according to the second aspect of the present invention, the bending angle of each of the first bent portion and the second bent portion with respect to the plane including the intersecting direction and the orthogonal direction is 80 ° to 90 °. That is, the first bent portion and the second bent portion are formed in a tapered shape from the first base portion and the second base portion to the first adjacent portion and the second adjacent portion. Therefore, each of the first bent portion and the second bent portion can move in the crossing direction when the flat tube is inserted. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
　本発明の第３観点に係る熱交換器においては、第１折曲部のうち扁平管に接しない部分の積層方向の長さは、０．４ｍｍから１．２ｍｍである。第２折曲部のうち扁平管に接しない部分の積層方向の長さは、０．４ｍｍから１．２ｍｍである。 In the heat exchanger according to the third aspect of the present invention, the length in the stacking direction of the portion of the first bent portion that does not contact the flat tube is 0.4 mm to 1.2 mm. The length in the stacking direction of the portion of the second bent portion that does not contact the flat tube is 0.4 mm to 1.2 mm.
　本発明の第３観点に係る熱交換器では、扁平管は第１基部の近傍および第２基部の近傍に接しない。結果として、扁平管と挿入部の間の摩擦力を低減させることができる。 In the heat exchanger according to the third aspect of the present invention, the flat tube does not contact the vicinity of the first base and the vicinity of the second base. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
　本発明の第４観点に係る熱交換器においては、第１折曲部および第２折曲部のそれぞれは、近接部に続く湾曲部を有する。 In the heat exchanger according to the fourth aspect of the present invention, each of the first bent portion and the second bent portion has a curved portion that follows the proximity portion.
　本発明の第４観点に係る熱交換器では、第１折曲部および第２折曲部のそれぞれが湾曲部を有するので、第１折曲部および第２折曲部が形成されたフィンは、第１折曲部の湾曲部および第２折曲部の湾曲部によって、フィンピッチを確保し易くなる。 In the heat exchanger according to the fourth aspect of the present invention, since each of the first bent portion and the second bent portion has a curved portion, the fin on which the first bent portion and the second bent portion are formed is The fin pitch can be easily secured by the curved portion of the first bent portion and the bent portion of the second bent portion.
　本発明の第５観点に係る熱交換器においては、少なくとも１つのフィンは、複数の挿入部のそれぞれの縁部に設けられた折曲部を有する。 In the heat exchanger according to the fifth aspect of the present invention, at least one fin has a bent portion provided at each edge of the plurality of insertion portions.
　本発明の第５観点に係る熱交換器では、少なくとも１つのフィンに設けられた全ての挿入部において、扁平管とフィンの取り付け易さを向上させることができる。 In the heat exchanger according to the fifth aspect of the present invention, it is possible to improve the ease of attaching the flat tube and the fin in all the insertion portions provided in at least one fin.
　本発明の第６観点に係る熱交換器においては、複数のフィンのそれぞれは、複数の挿入部のそれぞれの縁部に設けられた折曲部を有する。 In the heat exchanger according to the sixth aspect of the present invention, each of the plurality of fins has a bent portion provided at each edge of the plurality of insertion portions.
　本発明の第６観点に係る熱交換器では、複数のフィンのそれぞれにおいて、扁平管とフィンの取り付け易さを向上させることができる。 In the heat exchanger according to the sixth aspect of the present invention, it is possible to improve the ease of attaching the flat tube and the fin in each of the plurality of fins.
　本発明の第１観点に係る熱交換器では、扁平管と挿入部の間の摩擦力を低減させることにより、扁平管とフィンの取り付け易さを向上させることができる。その結果、扁平管およびフィンの破損を抑制することが期待できる。 In the heat exchanger according to the first aspect of the present invention, it is possible to improve the ease of attaching the flat tube and the fin by reducing the frictional force between the flat tube and the insertion portion. As a result, it can be expected that damage to the flat tube and the fins is suppressed.
　本発明の第２観点に係る熱交換器では、第１折曲部および第２折曲部は、テーパ状に形成されているので、扁平管の挿入時に互いに交差方向に動くことができる。結果として、扁平管と挿入部の間の摩擦力を低減させることができる。 In the heat exchanger according to the second aspect of the present invention, since the first bent portion and the second bent portion are formed in a tapered shape, they can move in the crossing direction when the flat tube is inserted. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
　本発明の第３観点に係る熱交換器では、扁平管は第１基部の近傍および第２基部の近傍に接しない。結果として、扁平管と挿入部の間の摩擦力を低減させることができる。 In the heat exchanger according to the third aspect of the present invention, the flat tube does not contact the vicinity of the first base and the vicinity of the second base. As a result, the frictional force between the flat tube and the insertion portion can be reduced.
　本発明の第４観点に係る熱交換器では、第１折曲部および第２折曲部のそれぞれが湾曲部を有するので、第１折曲部および第２折曲部が形成されたフィンは、第１折曲部の湾曲部および第２折曲部の湾曲部によって、フィンピッチを確保し易くなる。 In the heat exchanger according to the fourth aspect of the present invention, since each of the first bent portion and the second bent portion has a curved portion, the fin on which the first bent portion and the second bent portion are formed is The fin pitch can be easily secured by the curved portion of the first bent portion and the bent portion of the second bent portion.
　本発明の第５観点に係る熱交換器では、少なくとも１つのフィンに設けられた全ての挿入部において、扁平管とフィンの取り付け易さを向上させることができる。 In the heat exchanger according to the fifth aspect of the present invention, it is possible to improve the ease of attaching the flat tube and the fin in all the insertion portions provided in at least one fin.
　本発明の第６観点に係る熱交換器では、複数のフィンのそれぞれにおいて、扁平管とフィンの取り付け易さを向上させることができる。 In the heat exchanger according to the sixth aspect of the present invention, it is possible to improve the ease of attaching the flat tube and the fin in each of the plurality of fins.
室外熱交換器を備える空気調和機の構成を説明する図である。It is a figure explaining the structure of an air conditioner provided with an outdoor heat exchanger. 室外熱交換器の外観斜視図である。It is an external appearance perspective view of an outdoor heat exchanger. 熱交換部を説明する図である。It is a figure explaining a heat exchange part. 折曲部の一例を説明する図である。It is a figure explaining an example of a bending part. 扁平管の挿入前後の折曲部を説明する図である。It is a figure explaining the bending part before and behind insertion of a flat tube. 折曲部の他の例を説明する図である。It is a figure explaining the other example of a bending part.
　本発明の実施形態を以下に示す。なお、以下の実施形態は、具体例に過ぎず、特許請求の範囲に係る発明を限定するものではない。 Embodiments of the present invention are shown below. The following embodiments are merely specific examples and do not limit the invention according to the claims.
　＜第１実施形態＞
　（１）空気調和機
　（１－１）空気調和機の概略構成
　図１は、本発明の一実施形態に係る熱交換器の一例としての室外熱交換器４００を備える空気調和機１００の構成を説明する図である。空気調和機１００は、熱源側ユニットとしての空調室外機２００と、利用側ユニットとしての空調室内機３００とを含む。空調室外機２００と空調室内機３００は、液冷媒の冷媒連絡配管１０１およびガス冷媒の冷媒連絡配管１０２を介して、互いに接続されている。 <First Embodiment>
(1) Air Conditioner (1-1) Schematic Configuration of Air Conditioner FIG. 1 shows a configuration of an air conditioner 100 including an outdoor heat exchanger 400 as an example of a heat exchanger according to an embodiment of the present invention. It is a figure explaining. The air conditioner 100 includes an air conditioning outdoor unit 200 as a heat source side unit and an air conditioning indoor unit 300 as a use side unit. The air-conditioning outdoor unit 200 and the air-conditioning indoor unit 300 are connected to each other via a liquid refrigerant refrigerant communication pipe 101 and a gas refrigerant refrigerant communication pipe 102.
　空気調和機１００の冷媒回路は、空調室外機２００、空調室内機３００、冷媒連絡配管１０１、および冷媒連絡配管１０２によって、構成されている。より詳細には、冷媒回路は、膨張弁２０３、圧縮機２０４、四路切換弁２０５、アキュムレータ２０６、室内熱交換器３０１および室外熱交換器４００を含む。 The refrigerant circuit of the air conditioner 100 includes an air conditioning outdoor unit 200, an air conditioning indoor unit 300, a refrigerant communication pipe 101, and a refrigerant communication pipe 102. More specifically, the refrigerant circuit includes an expansion valve 203, a compressor 204, a four-way switching valve 205, an accumulator 206, an indoor heat exchanger 301, and an outdoor heat exchanger 400.
　（１－２）空気調和機の詳細構成
　（１－２－１）空調室内機
　空調室内機３００は、室内熱交換器３０１と、室内ファン３０２とを有する。室内熱交換器３０１は、例えば、伝熱管と多数のフィンとにより構成されたクロスフィン式のフィンアンドチューブ型熱交換器である。室内熱交換器３０１は、冷房運転時に冷媒の蒸発器として機能して室内空気を冷却し、暖房運転時に冷媒の凝縮器として機能して室内空気を加熱する。 (1-2) Detailed Configuration of Air Conditioner (1-2-1) Air Conditioning Indoor Unit The air conditioning indoor unit 300 includes an indoor heat exchanger 301 and an indoor fan 302. The indoor heat exchanger 301 is, for example, a cross fin type fin-and-tube heat exchanger configured by heat transfer tubes and a large number of fins. The indoor heat exchanger 301 functions as a refrigerant evaporator during cooling operation to cool indoor air, and functions as a refrigerant condenser during heating operation to heat indoor air.
　（１－２－２）空調室外機
　空調室外機２００は、ガス冷媒配管２０１と、液冷媒配管２０２と、膨張弁２０３と、圧縮機２０４と、四路切換弁２０５と、アキュムレータ２０６と、室外ファン２０７と、室外熱交換器４００とを有する。ガス冷媒配管２０１の一端は、室外熱交換器４００のガス側端部に接続され、ガス冷媒配管２０１の他端は、四路切換弁２０５に接続されている。液冷媒配管２０２の一端は、室外熱交換器４００の液側端部に接続され、液冷媒配管２０２の他端は、膨張弁２０３に接続されている。 (1-2-2) Air Conditioning Outdoor Unit The air conditioning outdoor unit 200 includes a gas refrigerant pipe 201, a liquid refrigerant pipe 202, an expansion valve 203, a compressor 204, a four-way switching valve 205, an accumulator 206, an outdoor unit. The fan 207 and the outdoor heat exchanger 400 are included. One end of the gas refrigerant pipe 201 is connected to the gas side end of the outdoor heat exchanger 400, and the other end of the gas refrigerant pipe 201 is connected to the four-way switching valve 205. One end of the liquid refrigerant pipe 202 is connected to the liquid side end of the outdoor heat exchanger 400, and the other end of the liquid refrigerant pipe 202 is connected to the expansion valve 203.
　膨張弁２０３は、冷媒を減圧する機構である。膨張弁２０３は、室外熱交換器４００と冷媒連絡配管１０１の間に設けられている。圧縮機２０４は、圧縮機用モータによって駆動される密閉式圧縮機である。 The expansion valve 203 is a mechanism that depressurizes the refrigerant. The expansion valve 203 is provided between the outdoor heat exchanger 400 and the refrigerant communication pipe 101. The compressor 204 is a hermetic compressor driven by a compressor motor.
　四路切換弁２０５は、冷媒が流れる方向を切り換える機構である。冷房運転時には、図１の四路切換弁２０５の実線に示されるように、四路切換弁２０５は、圧縮機２０４の吐出側の冷媒配管とガス冷媒配管２０１を接続すると共に、アキュムレータ２０６を介して、圧縮機２０４の吸入側の冷媒配管と冷媒連絡配管１０２を接続する。一方、暖房運転時には、図１の四路切換弁２０５の破線に示されるように、四路切換弁２０５は、圧縮機２０４の吐出側の冷媒配管と冷媒連絡配管１０２を接続すると共に、アキュムレータ２０６を介して、圧縮機２０４の吸入側の冷媒配管とガス冷媒配管２０１を接続する。 The four-way switching valve 205 is a mechanism that switches the direction in which the refrigerant flows. During cooling operation, as shown by the solid line of the four-way switching valve 205 in FIG. 1, the four-way switching valve 205 connects the refrigerant pipe 201 on the discharge side of the compressor 204 and the gas refrigerant pipe 201 and passes through the accumulator 206. Thus, the refrigerant pipe on the suction side of the compressor 204 and the refrigerant communication pipe 102 are connected. On the other hand, during heating operation, as shown by the broken line of the four-way switching valve 205 in FIG. 1, the four-way switching valve 205 connects the refrigerant pipe on the discharge side of the compressor 204 and the refrigerant communication pipe 102 and also accumulator 206. Then, the refrigerant pipe on the suction side of the compressor 204 and the gas refrigerant pipe 201 are connected.
　アキュムレータ２０６は、圧縮機２０４と四路切換弁２０５の間に設けられている。アキュムレータ２０６は、冷媒を気相と液相に分ける。室外ファン２０７は、室外空気を室外熱交換器４００に供給する。 The accumulator 206 is provided between the compressor 204 and the four-way switching valve 205. The accumulator 206 divides the refrigerant into a gas phase and a liquid phase. The outdoor fan 207 supplies outdoor air to the outdoor heat exchanger 400.
　（１－３）空気調和機の動作
　（１－３－１）冷房運転
　膨張弁２０３の開度は、室内熱交換器３０１の出口（すなわち、室内熱交換器３０１のガス側）における冷媒の過熱度が一定になるように、調整されている。冷房運転時の四路切換弁２０５の接続状態は、既に説明した通りである。 (1-3) Operation of the air conditioner (1-3-1) Cooling operation The opening degree of the expansion valve 203 is determined by the refrigerant overheating at the outlet of the indoor heat exchanger 301 (that is, the gas side of the indoor heat exchanger 301). The degree is adjusted to be constant. The connection state of the four-way switching valve 205 during the cooling operation is as already described.
　以上のような状態の冷媒回路において、圧縮機２０４から吐出された冷媒は、四路切換弁２０５を通って室外熱交換器４００へ流入し、室外空気へ放熱して凝縮する。室外熱交換器４００から流出された冷媒は、膨張弁２０３を通過するときに膨張する。その後、室内熱交換器３０１へ流入し、室内空気から吸熱して蒸発する。 In the refrigerant circuit in the above-described state, the refrigerant discharged from the compressor 204 flows into the outdoor heat exchanger 400 through the four-way switching valve 205, dissipates heat to the outdoor air, and condenses. The refrigerant that has flowed out of the outdoor heat exchanger 400 expands when it passes through the expansion valve 203. Then, it flows into the indoor heat exchanger 301, absorbs heat from the indoor air, and evaporates.
　（１－３－２）暖房運転
　膨張弁２０３の開度は、室内熱交換器３０１の出口における冷媒の過冷却度が過冷却度目標値で一定になるように、調節されている。暖房運転時の四路切換弁２０５の接続状態は、既に説明した通りである。 (1-3-2) Heating Operation The opening degree of the expansion valve 203 is adjusted so that the degree of supercooling of the refrigerant at the outlet of the indoor heat exchanger 301 becomes constant at the target value of the degree of supercooling. The connection state of the four-way switching valve 205 during the heating operation is as already described.
　以上のような状態の冷媒回路において、圧縮機２０４から吐出された冷媒は、四路切換弁２０５を通って室内熱交換器３０１へ流入し、室内空気へ放熱して凝縮する。室内熱交換器３０１から流出した冷媒は、膨張弁２０３を通過するときに膨張する。その後、室外熱交換器４００へ流入し、室外空気から吸熱して蒸発する。室外熱交換器４００から流出した冷媒は、四路切換弁２０５を通過後に再び圧縮機２０４へ吸入されて圧縮される。 In the refrigerant circuit in the above state, the refrigerant discharged from the compressor 204 flows into the indoor heat exchanger 301 through the four-way switching valve 205, dissipates heat to the indoor air, and condenses. The refrigerant that has flowed out of the indoor heat exchanger 301 expands when it passes through the expansion valve 203. Then, it flows into the outdoor heat exchanger 400, absorbs heat from the outdoor air, and evaporates. The refrigerant flowing out of the outdoor heat exchanger 400 passes through the four-way switching valve 205 and is again sucked into the compressor 204 and compressed.
　（２）室外熱交換器
　（２－１）室外熱交換器の概略構成
　図２は、室外熱交換器４００の外観斜視図である。室外熱交換器４００は、熱交換部４１０と、出入口ヘッダ集合管４２０と、折返しヘッダ集合管４３０とを備える。熱交換部４１０、出入口ヘッダ集合管４２０、および折返しヘッダ集合管４３０は、互いにロウで接合されている。なお、本明細書では、後述する複数のフィン４１１が積層される積層方向をＸ軸方向と定義する。それぞれのフィン４１１の長手方向、すなわち、Ｘ軸方向に交差し、後述の複数の扁平管４１２が並んで配置されている方向をＹ軸方向と定義する。それぞれのフィン４１１の短手方向、すなわち、Ｘ軸方向とＹ軸方向を含む平面に直交する直交方向をＺ軸方向と定義する。 (2) Outdoor Heat Exchanger (2-1) Schematic Configuration of Outdoor Heat Exchanger FIG. 2 is an external perspective view of the outdoor heat exchanger 400. The outdoor heat exchanger 400 includes a heat exchange unit 410, an entrance / exit header collecting pipe 420, and a folded header collecting pipe 430. The heat exchanging section 410, the inlet / outlet header collecting pipe 420, and the folded header collecting pipe 430 are joined to each other by soldering. In this specification, a stacking direction in which a plurality of fins 411 described later are stacked is defined as an X-axis direction. The longitudinal direction of each fin 411, that is, the direction in which a plurality of flat tubes 412 described later are arranged side by side is defined as the Y-axis direction. A short direction of each fin 411, that is, an orthogonal direction orthogonal to a plane including the X-axis direction and the Y-axis direction is defined as a Z-axis direction.
　熱交換部４１０は、室外空気と冷媒の熱交換を行う。熱交換部４１０は、複数のフィン４１１と、複数の扁平管４１２とを備える。複数のフィン４１１および複数の扁平管４１２は、アルミニウム製、またはアルミニウム合金製である。複数のフィン４１１は、Ｘ軸方向に積層されている。複数の扁平管４１２は、Ｙ軸方向に並んで配置されている。 The heat exchanging unit 410 exchanges heat between the outdoor air and the refrigerant. The heat exchanging unit 410 includes a plurality of fins 411 and a plurality of flat tubes 412. The plurality of fins 411 and the plurality of flat tubes 412 are made of aluminum or aluminum alloy. The plurality of fins 411 are stacked in the X-axis direction. The plurality of flat tubes 412 are arranged side by side in the Y-axis direction.
　出入口ヘッダ集合管４２０は、熱交換部４１０のＸ軸方向の一端側に設けられている。出入口ヘッダ集合管４２０は、扁平管４１２のＸ軸方向の一端近傍を固定している。出入口ヘッダ集合管４２０の内部空間は、扁平管４１２の内部流路と連通している。 The entrance / exit header collecting pipe 420 is provided on one end side in the X-axis direction of the heat exchanging section 410. The entrance / exit header collecting pipe 420 fixes the vicinity of one end of the flat pipe 412 in the X-axis direction. The internal space of the inlet / outlet header collecting pipe 420 communicates with the internal flow path of the flat pipe 412.
　折返しヘッダ集合管４３０は、熱交換部４１０のＸ軸方向の他端側に設けられている。折返しヘッダ集合管４３０は、扁平管４１２のＸ軸方向の他端近傍（すなわち、出入口ヘッダ集合管４２０側とは反対側の端部近傍）を固定している。折返しヘッダ集合管４３０の内部空間は、扁平管４１２の内部流路と連通している。 The folded header collecting pipe 430 is provided on the other end side in the X-axis direction of the heat exchange unit 410. The folded header collecting pipe 430 fixes the vicinity of the other end in the X-axis direction of the flat tube 412 (that is, the vicinity of the end opposite to the inlet / outlet header collecting pipe 420 side). The internal space of the folded header collecting pipe 430 communicates with the internal flow path of the flat pipe 412.
　（２－２）熱交換部の構成
　図３は、熱交換部４１０を説明する図である。図３は、図２の領域ＡのＹＺ断面の一部を拡大した図である。複数のフィン４１１の構造は、互いに共通している。したがって、ここでは、１つのフィン４１１を例に挙げてその構造を説明する。 (2-2) Configuration of Heat Exchanger FIG. 3 is a diagram for explaining the heat exchanger 410. FIG. 3 is an enlarged view of a part of the YZ cross section in the region A of FIG. The structure of the plurality of fins 411 is common to each other. Therefore, here, the structure of the fin 411 will be described as an example.
　フィン４１１は、板状の部材である。フィン４１１の形状は、全体として略矩形である。より詳細には、Ｙ軸方向を長辺、Ｚ軸方向を短辺とする矩形である。フィン４１１は、挿入部の一例としての、複数の切欠部４２１を有する。複数の切欠部４２１は、空気流れの風上側（すなわちＺ軸方向のマイナス側）に形成されている。複数の切欠部４２１は、Ｙ軸方向に間隔をあけて形成されている。複数の切欠部４２１には、複数の扁平管４１２のそれぞれが挿入されている。複数の切欠部４２１は、Ｕ字状に形成されている。 The fin 411 is a plate-like member. The shape of the fin 411 is substantially rectangular as a whole. More specifically, the rectangle has a long side in the Y-axis direction and a short side in the Z-axis direction. The fin 411 has a plurality of cutout portions 421 as an example of an insertion portion. The plurality of notches 421 are formed on the windward side of the air flow (that is, the minus side in the Z-axis direction). The plurality of notches 421 are formed at intervals in the Y-axis direction. Each of the plurality of flat tubes 412 is inserted into the plurality of notches 421. The plurality of notches 421 are formed in a U shape.
　フィン４１１は、複数の折曲部４６０を有する。複数の折曲部４６０は、複数の切欠部４２１のそれぞれの縁部に設けられている。詳しくは後述するが、複数の折曲部４６０のそれぞれは、縁部の一部が折り曲げられてなる第１折曲部４４０と、縁部の、当該一部とは異なる他部が折り曲げられてなる第２折曲部４５０とを含む。本実施形態においては、第１折曲部４４０は、第２折曲部４５０とは別個に設けられており、第１折曲部４４０と第２折曲部４５０は、Ｙ軸方向において互いに対向している。第１折曲部４４０および第２折曲部４５０のＺ軸方向の幅は、扁平管４１２の側面、すなわち、扁平部分のＺ軸方向の幅と略同一である。 The fin 411 has a plurality of bent portions 460. The plurality of bent portions 460 are provided at the respective edge portions of the plurality of cutout portions 421. As will be described in detail later, each of the plurality of bent portions 460 includes a first bent portion 440 in which a part of the edge portion is bent, and another portion of the edge portion that is different from the part is bent. And the second bent portion 450. In the present embodiment, the first bent portion 440 is provided separately from the second bent portion 450, and the first bent portion 440 and the second bent portion 450 are opposed to each other in the Y-axis direction. is doing. The width of the first bent portion 440 and the second bent portion 450 in the Z-axis direction is substantially the same as the side surface of the flat tube 412, that is, the width of the flat portion in the Z-axis direction.
　複数の扁平管４１２は、伝熱管として機能する。冷媒はそれぞれの扁平管４１２の内部を流れ、それぞれの扁平管４１２はフィン４１１と室外空気の間を移動する熱を冷媒に伝達する。 The plurality of flat tubes 412 function as heat transfer tubes. The refrigerant flows inside each flat tube 412, and each flat tube 412 transmits heat moving between the fins 411 and outdoor air to the refrigerant.
　（２－３）折曲部の構成
　図４は、折曲部４６０の一例を説明する図である。図４は、図３のＩＶ－ＩＶ断面図と、ＩＶ－ＩＶ断面図における領域Ｂの部分拡大図とを示す。ここでは、扁平管４１２のうち第１折曲部４４０と第２折曲部４５０に挟まれた部分付近を実線で示し、それ以外を破線で示す。 (2-3) Configuration of Bent Part FIG. 4 is a diagram illustrating an example of the bent part 460. FIG. 4 shows a sectional view taken along the line IV-IV in FIG. 3 and a partially enlarged view of a region B in the sectional view taken along the line IV-IV. Here, in the flat tube 412, the vicinity of the portion sandwiched between the first bent portion 440 and the second bent portion 450 is indicated by a solid line, and the other portion is indicated by a broken line.
　距離Ｄ1は、後述の第１近接部４４２と後述の第１基部４４１とのＸ軸方向の距離を示す。距離Ｄ2は、後述の第２近接部４５２と後述の第２基部４５１とのＸ軸方向の距離を示す。距離Ｄ3は、扁平管４１２のＹ軸方向の距離を示す。距離Ｄ4は、第１折曲部４４０のうち扁平管４１２に接しない部分のＸ軸方向の長さ、すなわち、第１基部４４１と第１最下接触部４４４のＸ軸方向の距離を示す。第１最下接触部４４４は、第１折曲部４４０における、扁平管４１２に接する部分のうち、第１基部４４１に最も近い部分である。距離Ｄ5は、第２折曲部４５０のうち扁平管４１２に接しない部分のＸ軸方向の長さ、すなわち、第２基部４５１と第２最下接触部４５４のＸ軸方向の距離を示す。第２最下接触部４５４は、第２折曲部４５０における、扁平管４１２に接する部分のうち、第２基部４５１に最も近い部分である。 The distance D 1 indicates a distance in the X-axis direction between a first proximity portion 442 described later and a first base portion 441 described later. The distance D 2 indicates the distance in the X-axis direction between a second proximity portion 452 described later and a second base 451 described later. The distance D 3 indicates the distance of the flat tube 412 in the Y-axis direction. The distance D 4 indicates the length in the X-axis direction of the portion of the first bent portion 440 that does not contact the flat tube 412, that is, the distance in the X-axis direction between the first base portion 441 and the first lowest contact portion 444. . The first lowest contact portion 444 is a portion closest to the first base portion 441 among the portions in contact with the flat tube 412 in the first bent portion 440. The distance D 5 indicates the length in the X-axis direction of the portion of the second bent portion 450 that does not contact the flat tube 412, that is, the distance in the X-axis direction between the second base portion 451 and the second lowest contact portion 454. . The second lowest contact portion 454 is the portion of the second bent portion 450 that is closest to the second base portion 451 among the portions that contact the flat tube 412.
　第１折曲部４４０は、全体として鉤状に形成されている。第１折曲部４４０は、第１基部４４１、第１近接部４４２、および第１湾曲部４４３を有する。第１近接部４４２は、第１折曲部４４０のうち第２折曲部４５０に最も近接する部分である。第１湾曲部４４３は、第１近接部４４２に続く部分である。すなわち、第１折曲部４４０の先端部分である。第１湾曲部４４３は、第２折曲部４５０の側とは反対側に湾曲している。 The first bent portion 440 is formed in a bowl shape as a whole. The first bent portion 440 includes a first base portion 441, a first proximity portion 442, and a first bending portion 443. The first proximity portion 442 is a portion of the first bent portion 440 that is closest to the second bent portion 450. The first bending portion 443 is a portion following the first proximity portion 442. That is, it is a tip portion of the first bent portion 440. The first curved portion 443 is curved on the side opposite to the second bent portion 450 side.
　第２折曲部４５０は、全体として鉤状に形成されている。第２折曲部４５０は、第２基部４５１、第２近接部４５２、および第２湾曲部４５３を有する。第２折曲部４５０は、第２折曲部４５０のうち第１折曲部４４０に最も近接する部分である。第２湾曲部４５３は、第２近接部４５２に続く部分である。すなわち、第２折曲部４５０の先端部分である。第２湾曲部４５３は、第１折曲部４４０の側とは反対側に湾曲している。 The second bent portion 450 is formed in a bowl shape as a whole. The second bent portion 450 includes a second base portion 451, a second proximity portion 452, and a second curved portion 453. The second bent portion 450 is a portion of the second bent portion 450 that is closest to the first bent portion 440. The second bending portion 453 is a portion following the second proximity portion 452. That is, it is a tip portion of the second bent portion 450. The second curved portion 453 is curved on the side opposite to the first bent portion 440 side.
　第１折曲部４４０と第２折曲部４５０の間のＹ軸方向の距離は、第１基部４４１および第２基部４５１から第１近接部４４２および第２近接部４５２にかけて短くなっている。すなわち、当該区間のＹ軸方向の幅は、テーパ状になっている。 The distance in the Y-axis direction between the first bent portion 440 and the second bent portion 450 is shorter from the first base portion 441 and the second base portion 451 to the first proximity portion 442 and the second proximity portion 452. That is, the width of the section in the Y-axis direction is tapered.
　距離Ｄ1は、距離Ｄ3の０．２倍から０．９倍である。好ましくは、０．３倍から０．９倍である。距離Ｄ2は、距離Ｄ3の０．２倍から０．９倍である。好ましくは、０．３倍から０．９倍である。 The distance D 1 is 0.9 times 0.2 times the distance D 3. Preferably, it is 0.3 to 0.9 times. The distance D 2 is 0.2 to 0.9 times the distance D 3 . Preferably, it is 0.3 to 0.9 times.
　第１折曲部４４０の、Ｙ軸方向とＺ軸方向を含む平面に対する折り曲げ角度θ1は、８０°から９０°である。第２折曲部４５０の、Ｙ軸方向とＺ軸方向を含む平面に対する折り曲げ角度θ2は、８０°から９０°である。距離Ｄ4は、０．４ｍｍから１．２ｍｍである。距離Ｄ5は、０．４ｍｍから１．２ｍｍである。 The bending angle θ 1 of the first bent portion 440 with respect to the plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °. The bending angle θ 2 of the second bent portion 450 with respect to the plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °. The distance D 4 is 1.2mm from 0.4 mm. The distance D 5 is 1.2mm from 0.4 mm.
　扁平管４１２は、第１折曲部４４０および第２折曲部４５０のそれぞれの一部と接合されている。より詳細には、第１折曲部４４０を含む第１折曲部４４０の付近および第２近接部４５２を含む第２近接部４５２の付近と接合されている。扁平管４１２は、第１基部４４１および第２基部４５１とは接合されていない。加えて、第１基部４４１の付近および第２基部４５１の付近にも、扁平管４１２と接合されていない部分が存在する。すなわち、扁平管４１２は、第１基部４４１および第２基部４５１から、ある程度離れた位置で、第１折曲部４４０および第２折曲部４５０と接合されている。 The flat tube 412 is joined to a part of each of the first bent portion 440 and the second bent portion 450. More specifically, the vicinity of the first bent portion 440 including the first bent portion 440 and the vicinity of the second adjacent portion 452 including the second adjacent portion 452 are joined. The flat tube 412 is not joined to the first base portion 441 and the second base portion 451. In addition, there are also portions that are not joined to the flat tube 412 in the vicinity of the first base portion 441 and the vicinity of the second base portion 451. That is, the flat tube 412 is joined to the first bent portion 440 and the second bent portion 450 at a position away from the first base portion 441 and the second base portion 451 to some extent.
　（２－４）扁平管の挿入前後の折曲部
　図５は、扁平管４１２の挿入前後の折曲部４６０を説明する図である。図５は、図４の領域Ｂの拡大部分に相当する。図５では、二点差線は、扁平管４１２が挿入される前の折曲部４６０を示し、実線は、扁平管４１２が挿入された後の折曲部４６０を示す。なお、ここでは、図面の見易さの観点から、扁平管４１２の図示を省略している。 (2-4) Bent part before and after insertion of flat tube FIG. 5 is a diagram for explaining a bent part 460 before and after insertion of the flat tube 412. FIG. 5 corresponds to an enlarged portion of region B in FIG. In FIG. 5, the two-dot chain line indicates the bent portion 460 before the flat tube 412 is inserted, and the solid line indicates the bent portion 460 after the flat tube 412 is inserted. Here, the flat tube 412 is omitted from the viewpoint of easy viewing of the drawing.
　距離Ｄ1´は、扁平管４１２が挿入される前の第１折曲部４４０において、第１近接部４４２と第１基部４４１のＸ軸方向の距離を示す。距離Ｄ2´は、扁平管４１２が挿入される前の第２折曲部４５０において、第２近接部４５２と第２基部４５１のＸ軸方向の距離を示す。距離Ｄ3´は、扁平管４１２が挿入される前の折曲部４６０において、第１近接部４４２と第２近接部４５２のＹ軸方向の距離を示す。 The distance D 1 ′ indicates the distance in the X-axis direction between the first proximity portion 442 and the first base portion 441 in the first bent portion 440 before the flat tube 412 is inserted. The distance D 2 ′ indicates the distance in the X-axis direction between the second proximity portion 452 and the second base portion 451 in the second bent portion 450 before the flat tube 412 is inserted. The distance D 3 ′ indicates the distance in the Y-axis direction between the first proximity portion 442 and the second proximity portion 452 in the bent portion 460 before the flat tube 412 is inserted.
　距離Ｄ6は、扁平管４１２が挿入された後の第１折曲部４４０において、第１近接部４４２と第１頂点部４４５のＸ軸方向の距離を示す。なお、第１頂点部４４５は、第１折曲部４４０における、Ｘ軸方向の最も高い部分である。すなわち、第１折曲部４４０における、第１基部４４１からＸ軸方向に最も遠い部分である。距離Ｄ6´は、扁平管４１２が挿入される前の第１折曲部４４０において、第１近接部４４２と第１頂点部４４５のＸ軸方向の距離を示す。 The distance D 6 indicates the distance in the X-axis direction between the first proximity portion 442 and the first vertex portion 445 in the first bent portion 440 after the flat tube 412 is inserted. Note that the first vertex portion 445 is the highest portion in the X-axis direction in the first bent portion 440. That is, it is a portion farthest in the X-axis direction from the first base portion 441 in the first bent portion 440. The distance D 6 ′ indicates the distance in the X-axis direction between the first proximity portion 442 and the first vertex portion 445 in the first bent portion 440 before the flat tube 412 is inserted.
　距離Ｄ7は、扁平管４１２が挿入された後の第２折曲部４５０において、第２近接部４５２と第２頂点部４５５のＸ軸方向の距離を示す。なお、第２頂点部４５５は、第２折曲部４５０における、Ｘ軸方向の最も高い部分である。すなわち、第２折曲部４５０における、第２基部４５１からＸ軸方向に最も遠い部分である。距離Ｄ7´は、扁平管４１２が挿入される前の第２折曲部４５０において、第２近接部４５２と第２頂点部４５５のＸ軸方向の距離を示す。 The distance D 7 indicates the distance in the X-axis direction between the second proximity portion 452 and the second vertex portion 455 in the second bent portion 450 after the flat tube 412 is inserted. Note that the second vertex portion 455 is the highest portion of the second bent portion 450 in the X-axis direction. That is, the second bent portion 450 is the portion farthest from the second base 451 in the X-axis direction. A distance D 7 ′ indicates a distance in the X-axis direction between the second proximity portion 452 and the second apex portion 455 in the second bent portion 450 before the flat tube 412 is inserted.
　折り曲げ角度θ1´は、扁平管４１２が挿入される前の第１折曲部４４０の、Ｙ軸方向とＺ軸方向を含む平面に対する折り曲げ角度である。折り曲げ角度θ2´は、扁平管４１２が挿入される前の第２折曲部４５０の、Ｙ軸方向とＺ軸方向を含む平面に対する折り曲げ角度である。 The bending angle θ 1 ′ is a bending angle of the first bent portion 440 before the flat tube 412 is inserted with respect to a plane including the Y-axis direction and the Z-axis direction. The bending angle θ 2 ′ is a bending angle of the second bent portion 450 before the flat tube 412 is inserted with respect to a plane including the Y-axis direction and the Z-axis direction.
　扁平管４１２が切欠部４２１に圧入されると、第１近接部４４２と第２近接部４５２の間の距離は広げられる。すなわち、距離Ｄ3は、距離Ｄ3´よりも長くなる。 When the flat tube 412 is press-fitted into the cutout portion 421, the distance between the first proximity portion 442 and the second proximity portion 452 is increased. That is, the distance D 3 is longer than the distance D 3 ′.
　第１近接部４４２と第２近接部４５２の間の距離が広げられることにより、第１折曲部４４０および第２折曲部４５０が急峻になる。すなわち、折り曲げ角度θ1は折り曲げ角度θ1´よりも大きく、折り曲げ角度θ2は折り曲げ角度θ2´よりも大きくなる。一方で、扁平管４１２が圧入されることによって、複数のフィン４１１の全体としてはＸ軸方向に押し縮められる。これにより、第１湾曲部４４３および第２湾曲部４５３が変形する。より詳細には、Ｘ軸方向マイナス側に折り曲がる。 As the distance between the first proximity portion 442 and the second proximity portion 452 is increased, the first bent portion 440 and the second bent portion 450 become steep. That is, the bending angle θ 1 is larger than the bending angle θ 1 ′, and the bending angle θ 2 is larger than the bending angle θ 2 ′. On the other hand, when the flat tube 412 is press-fitted, the plurality of fins 411 are compressed in the X-axis direction as a whole. Thereby, the 1st bending part 443 and the 2nd bending part 453 deform | transform. More specifically, it bends to the minus side in the X-axis direction.
　以上のように、第１折曲部４４０が急峻になることにより、距離Ｄ1が距離Ｄ1´よりも長くなるのに対し、第１湾曲部４４３が折り曲がることにより、距離Ｄ6は距離Ｄ6´よりも短くなる。同様に、第２折曲部４５０が急峻になることにより、距離Ｄ2が距離Ｄ2´よりも長くなるのに対し、第２湾曲部４５３が折り曲がることにより、距離Ｄ7は距離Ｄ7´よりも短くなる。 As described above, when the first bent portion 440 becomes steep, the distance D 1 becomes longer than the distance D 1 ′, whereas the first curved portion 443 is bent, so that the distance D 6 becomes the distance. Shorter than D 6 ′. Similarly, since the second bent portion 450 is steep, the distance D to 2 that is longer than the distance D 2 ', since the second bending portion 453 is bent, the distance D 7 is distance D 7 It becomes shorter than ´.
　結果として、距離Ｄ1と距離Ｄ6の和は、距離Ｄ1´と距離Ｄ6´の和に略等しくなる。同様に、距離Ｄ2と距離Ｄ7の和は、距離Ｄ2´と距離Ｄ7´の和に略等しくなる。距離Ｄ1と距離Ｄ6の和、および距離Ｄ2と距離Ｄ7の和は、隣接するフィンとフィンの間隔、すなわち、フィンピッチに相当する。 As a result, the sum of the distance D 1 and the distance D 6 is substantially equal to the sum of the distance D 1 'and the distance D 6'. Similarly, the sum of the distances D 2 and the distance D 7 is substantially equal to the sum of the distance D 2 'and the distance D 7'. The sum of the distance D 1 and the distance D 6 and the sum of the distance D 2 and the distance D 7 correspond to an interval between adjacent fins, that is, a fin pitch.
　（３）室外熱交換器の特徴
　本実施形態の室外熱交換器４００においては、距離Ｄ1および距離Ｄ2のそれぞれは、距離Ｄ3の０．２倍から０．９倍である。すなわち、第１近接部４４２および第２近接部４５２のそれぞれは、ある程度の高さを有する。折曲部４６０が設けられた切欠部４２１に挿入された扁平管４１２は、第１近接部４４２と第２近接部４５２に密着する一方で、第１基部４４１と第２基部４５１に接しない。つまり、扁平管４１２が切欠部４２１に挿入される場合に、扁平管４１２の挿入し易さは、接触しない第１基部４４１および第２基部４５１というよりも、接触する第１近接部４４２と第２近接部４５２に影響される。第１近接部４４２および第２近接部４５２のそれぞれは、上述のように、折り曲げられた部分であり、かつ、ある程度の高さを有するので、扁平管４１２の挿入時に、互いにＹ軸方向に動く。すなわち、第１近接部４４２および第２近接部４５２は、扁平管４１２が圧入されるときの、フィン４１１に対する圧力を低減する役割を担う。これにより、扁平管４１２と切欠部４２１の間の摩擦力を低減させることができる。摩擦力が低減されるので、扁平管４１２とフィン４１１の取り付け易さを向上させることができる。その結果、扁平管４１２およびフィン４１１の破損を抑制することが期待できる。 (3) Features of outdoor heat exchanger In the outdoor heat exchanger 400 of the present embodiment, each of the distance D 1 and the distance D 2 is 0.2 to 0.9 times the distance D 3 . That is, each of the first proximity portion 442 and the second proximity portion 452 has a certain height. The flat tube 412 inserted into the notch 421 provided with the bent portion 460 is in close contact with the first proximity portion 442 and the second proximity portion 452, but does not contact the first base portion 441 and the second base portion 451. That is, when the flat tube 412 is inserted into the notch portion 421, the flat tube 412 is more easily inserted than the first base portion 441 and the second base portion 451 that are not in contact with each other. 2 influenced by the proximity portion 452. Each of the first proximity portion 442 and the second proximity portion 452 is a bent portion and has a certain height as described above, and therefore moves in the Y axis direction when the flat tube 412 is inserted. . That is, the 1st proximity part 442 and the 2nd proximity part 452 bear the role which reduces the pressure with respect to the fin 411 when the flat tube 412 is press-fit. Thereby, the frictional force between the flat tube 412 and the notch part 421 can be reduced. Since the frictional force is reduced, the ease of attaching the flat tube 412 and the fin 411 can be improved. As a result, it can be expected that damage to the flat tubes 412 and the fins 411 is suppressed.
　第１近接部４４２および第２近接部４５２のそれぞれがある程度の高さを有するので、第１近接部４４２および第２近接部４５２によって、フィンピッチを確保することができる。第１近接部４４２および第２近接部４５２がフィンピッチを確保する役割を兼ねるので、フィンピッチを確保する部分を別途設けなくてもよい。 Since each of the first proximity portion 442 and the second proximity portion 452 has a certain height, the fin pitch can be secured by the first proximity portion 442 and the second proximity portion 452. Since the first proximity portion 442 and the second proximity portion 452 also serve to ensure the fin pitch, it is not necessary to separately provide a portion for ensuring the fin pitch.
　距離Ｄ1と距離Ｄ6の和が距離Ｄ1´と距離Ｄ6´の和に略等しく、距離Ｄ2と距離Ｄ7の和は距離Ｄ2´と距離Ｄ7´の和に略等しい。したがって、扁平管４１２の挿入前後でフィンピッチを略一定に保つことができる。 Distance D 1 and the distance D substantially equal to the sum of the 6 to the sum of the distance D 1 'and the distance D 6', the sum of the distances D 2 and the distance D 7 is substantially equal to the sum of the distance D 2 'and the distance D 7'. Therefore, the fin pitch can be kept substantially constant before and after insertion of the flat tube 412.
　本実施形態の室外熱交換器４００においては、第１折曲部４４０の、Ｙ軸方向とＺ軸方向を含む平面に対する折り曲げ角度θ1は、８０°から９０°であり、第２折曲部４５０の、Ｙ軸方向とＺ軸方向を含む平面に対する折り曲げ角度θ2は、８０°から９０°である。すなわち、第１折曲部４４０および第２折曲部４５０は、第１基部４４１および第２基部４５１から第１近接部４４２および第２近接部４５２にかけて、テーパ状に形成されている。したがって、第１折曲部４４０および第２折曲部４５０のそれぞれは、扁平管４１２の挿入時に、互いにＹ軸方向に動くことができる。結果として、扁平管４１２と切欠部４２１の間の摩擦力を低減させることができる。 In the outdoor heat exchanger 400 of the present embodiment, the bending angle θ 1 of the first bent portion 440 with respect to the plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °, and the second bent portion A bending angle θ 2 of 450 with respect to a plane including the Y-axis direction and the Z-axis direction is 80 ° to 90 °. That is, the first bent portion 440 and the second bent portion 450 are formed in a tapered shape from the first base portion 441 and the second base portion 451 to the first proximity portion 442 and the second proximity portion 452. Therefore, each of the first bent portion 440 and the second bent portion 450 can move in the Y-axis direction with respect to each other when the flat tube 412 is inserted. As a result, the frictional force between the flat tube 412 and the notch 421 can be reduced.
　本実施形態の室外熱交換器４００においては、距離Ｄ4は０．４ｍｍから１．２ｍｍであり、距離Ｄ5は０．４ｍｍから１．２ｍｍである。すなわち、扁平管４１２は、第１基部４４１の近傍および第２基部４５１の近傍に接しない。換言すると、扁平管４１２は、第１基部４４１および第２基部４５１から、ある程度離れた位置で、第１折曲部４４０および第２折曲部４５０と接合されている。これにより、扁平管４１２が圧入されるときの、フィン４１１に対する圧力をより低減することができる。 In the outdoor heat exchanger 400 of the present embodiment, the distance D 4 is 0.4 mm to 1.2 mm, and the distance D 5 is 0.4 mm to 1.2 mm. That is, the flat tube 412 does not contact the vicinity of the first base portion 441 and the vicinity of the second base portion 451. In other words, the flat tube 412 is joined to the first bent portion 440 and the second bent portion 450 at a certain distance from the first base portion 441 and the second base portion 451. Thereby, the pressure with respect to the fin 411 when the flat tube 412 is press-fit can be reduced more.
　本実施形態の室外熱交換器４００においては、第１折曲部４４０は第１湾曲部４４３を有し、第２折曲部４５０は第２湾曲部４５３を有する。第１折曲部４４０および第２折曲部４５０が形成されたフィン４１１は、第１湾曲部４４３および第２湾曲部４５３によって、フィンピッチをより確保し易くなる。 In the outdoor heat exchanger 400 of the present embodiment, the first bent portion 440 has a first bent portion 443 and the second bent portion 450 has a second bent portion 453. The fin 411 in which the first bent portion 440 and the second bent portion 450 are formed can more easily secure the fin pitch by the first bent portion 443 and the second bent portion 453.
　本実施形態の室外熱交換器４００においては、全てのフィン４１１が全ての切欠部４２１のそれぞれの縁部に設けられた折曲部４６０を有する。したがって、全てのフィン４１１のそれぞれにおいて、扁平管４１２とフィン４１１の取り付け易さを向上させることができる。 In the outdoor heat exchanger 400 of this embodiment, all the fins 411 have the bent portions 460 provided at the respective edge portions of all the notches 421. Therefore, in each of all the fins 411, the ease of attachment of the flat tube 412 and the fin 411 can be improved.
　＜変形例＞
　本発明の実施形態に適用可能な変形例を説明する。 <Modification>
A modification applicable to the embodiment of the present invention will be described.
　（１）変形例Ａ
　以上の説明では、第１折曲部４４０と第２折曲部４５０が互いに対向していたが、対向していなくてもよい。 (1) Modification A
In the above description, the first bent portion 440 and the second bent portion 450 are opposed to each other, but may not be opposed.
　図６は、折曲部４６０の他の例を説明する図である。図６の断面領域は、図３の断面領域に対応している。すなわち、図６は、図２の領域ＡのＹＺ断面の一部を拡大した図に相当する。 FIG. 6 is a diagram for explaining another example of the bent portion 460. The cross-sectional area in FIG. 6 corresponds to the cross-sectional area in FIG. That is, FIG. 6 corresponds to an enlarged view of a part of the YZ cross section of the region A in FIG.
　本変形例の第１折曲部４４０および第２折曲部４５０のＺ軸方向の幅は、図３の第１折曲部４４０および第２折曲部４５０のＺ軸方向の幅の略半分である。第１折曲部４４０は、切欠部４２１のＺ軸方向マイナス側の端部側に形成され、第２折曲部４５０は、切欠部４２１のＺ軸方向プラス側の端部側に形成されている。すなわち、第１折曲部４４０と第２折曲部４５０は、対向しておらず、互いにずれた位置に形成されている。第１折曲部４４０および第２折曲部４５０のそれぞれが互いにＺ軸方向にずれた領域に形成されるので、第１折曲部４４０および第２折曲部４５０のＸ軸方向の距離を確保し易くなる。扁平管４１２の幅が比較的細い場合に、本変形例の構成は、特に有効である。 The width in the Z-axis direction of the first bent portion 440 and the second bent portion 450 of this modification is substantially half of the width in the Z-axis direction of the first bent portion 440 and the second bent portion 450 in FIG. It is. The first bent portion 440 is formed on the end portion side of the notch portion 421 on the Z axis direction minus side, and the second bent portion 450 is formed on the end portion side of the notch portion 421 on the Z axis direction plus side. Yes. That is, the first bent portion 440 and the second bent portion 450 are not opposed to each other and are formed at positions shifted from each other. Since each of the first bent portion 440 and the second bent portion 450 is formed in a region shifted from each other in the Z-axis direction, the distance between the first bent portion 440 and the second bent portion 450 in the X-axis direction is set. It becomes easy to secure. The configuration of this modification is particularly effective when the width of the flat tube 412 is relatively thin.
　また、第１折曲部４４０と第２折曲部４５０は個別に形成されていなくてもよい。すなわち、第１折曲部４４０と第２折曲部４５０が一体的に形成されてもよい。例えば、折曲部４６０は切欠部４２１の縁部に沿ってＵ字状に形成されてもよい。 Moreover, the 1st bending part 440 and the 2nd bending part 450 do not need to be formed separately. That is, the first bent part 440 and the second bent part 450 may be formed integrally. For example, the bent portion 460 may be formed in a U shape along the edge of the notch 421.
　（２）変形例Ｂ
　以上の説明では、全てのフィン４１１のそれぞれが、全ての切欠部４２１のそれぞれの縁部に設けられた折曲部４６０を有したが、すなわち、切欠部４２１の数と同数の折曲部４６０を有したが、いくつかのフィン４１１は、切欠部４２１の数よりも少ない数の折曲部４６０を有してもよいし、折曲部４６０を全く有さなくてもよい。すなわち、少なくとも１つのフィンが、切欠部４２１の数と同数の折曲部４６０を有してもよい。この場合には、折曲部４６０を有する全てのフィン４１１において、当該フィンの全ての、第１折曲部４４０および第２折曲部４５０のＹ軸方向の幅を広げることができる。以上のように、扁平管４１２とフィン４１１の取り付け易さを向上させることができる。なお、切欠部４２１の数よりも少ない数の折曲部４６０を有するフィンにおいては、折曲部４６０が設けられた部分において、扁平管４１２とフィン４１１の取り付け易さを向上させることができる。 (2) Modification B
In the above description, all the fins 411 have the bent portions 460 provided at the respective edges of all the cutout portions 421, that is, the same number of bent portions 460 as the number of the cutout portions 421. However, some of the fins 411 may have a smaller number of bent portions 460 than the number of the notched portions 421 or may not have the bent portions 460 at all. That is, at least one fin may have the same number of bent portions 460 as the number of notches 421. In this case, in all the fins 411 having the bent portions 460, the widths in the Y-axis direction of all the first bent portions 440 and the second bent portions 450 of the fins can be increased. As described above, the ease of attaching the flat tube 412 and the fins 411 can be improved. In addition, in the fin which has the bending part 460 of the number smaller than the number of the notch parts 421, the attachment ease of the flat tube 412 and the fin 411 can be improved in the part in which the bending part 460 was provided.
　切欠部４２１の数と同数の折曲部４６０を有するフィン４１１が存在しなくてもよい。すなわち、少なくとも１つのフィン４１１が、少なくとも１つの折曲部４６０を有してもよい。この場合には、少なくとも１つのフィン４１１の、折曲部４６０が設けられた部分において、扁平管４１２とフィン４１１の取り付け易さを向上させることができる。 The fins 411 having the same number of bent portions 460 as the number of the notches 421 may not be present. That is, at least one fin 411 may have at least one bent portion 460. In this case, it is possible to improve the ease of attaching the flat tube 412 and the fin 411 in the portion of the at least one fin 411 where the bent portion 460 is provided.
　（３）変形例Ｃ
　以上の説明では、挿入部として切欠部４２１を例に挙げたが、これに限られない。挿入部として、扁平管４１２の形状に合わせた開口部が形成されてもよい。 (3) Modification C
In the above description, the notch portion 421 is taken as an example of the insertion portion, but is not limited thereto. An opening that matches the shape of the flat tube 412 may be formed as the insertion portion.
　以上のように、本発明は実施形態を用いて説明されたが、本発明の技術的範囲は上記の実施形態に記載の範囲に限定されない。多様な変更または改良を上記の実施形態に加えることが可能であることは、当業者に明らかである。その様な変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることは、特許請求の範囲の記載から明らかである。 As described above, the present invention has been described using the embodiment, but the technical scope of the present invention is not limited to the scope described in the above embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be made to the above embodiments. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.
４００　熱交換器
４１１　フィン
４１２　扁平管
４２１　切欠部
４４０　第１折曲部
４４１　第１基部
４４２　第１近接部
４４３　第１湾曲部
４５０　第２折曲部
４５１　第２基部
４５２　第２近接部
４５３　第２湾曲部
４６０　折曲部 400 Heat exchanger 411 Fin 412 Flat tube 421 Notch portion 440 First bent portion 441 First base portion 442 First proximal portion 443 First curved portion 450 Second bent portion 451 Second base portion 452 Second proximal portion 453 Second Curved part 460 Bent part
特開２０１５－３１４９１号公報JP2015-31491A

Claims (6)

  1. 　積層された複数のフィン（４１１）と、
    　前記複数のフィンの積層方向に対して交差する交差方向に並んで配置された複数の扁平管（４１２）と、
    を備え、
    　前記複数のフィンのそれぞれは、前記複数の扁平管のそれぞれが挿入された複数の挿入部（４２１）を有し、
    　前記複数のフィンのうち少なくとも１つのフィンは、前記複数の挿入部のうち少なくとも１つの挿入部の縁部に設けられた折曲部（４６０）を有し、
    　前記折曲部は、前記縁部の一部が折り曲げられてなる第１折曲部（４４０）と、前記縁部の、前記一部とは異なる他部が折り曲げられてなる第２折曲部（４５０）と、を含み、
    　前記積層方向と前記交差方向とを含む平面に直交する直交方向から見た場合に、前記第１折曲部のうち前記第２折曲部に最も近接する第１近接部（４４２）と、前記第１折曲部の第１基部（４４１）との前記積層方向の距離（Ｄ1）、および、前記第２折曲部のうち前記第１折曲部に最も近接する第２近接部（４５２）と、前記第２折曲部の第２基部（４５１）との前記積層方向の距離（Ｄ2）はそれぞれ、前記少なくとも１つの挿入部に挿入された扁平管の前記交差方向の距離（Ｄ3）の０．２倍から０．９倍であり、
    　前記少なくとも１つの挿入部に挿入された扁平管は、前記第１近接部と前記第２近接部に密着し、前記第１基部と前記第２基部に接しない、
    熱交換器（４１０）。     A plurality of laminated fins (411);
    A plurality of flat tubes (412) arranged side by side in the intersecting direction intersecting the stacking direction of the plurality of fins;
    With
    Each of the plurality of fins has a plurality of insertion portions (421) into which the plurality of flat tubes are inserted,
    At least one of the plurality of fins has a bent portion (460) provided at an edge of at least one insertion portion of the plurality of insertion portions,
    The bent portion includes a first bent portion (440) formed by bending a part of the edge portion and a second bent portion formed by bending another portion of the edge portion different from the part. (450), and
    A first proximity portion (442) closest to the second bent portion of the first bent portions when viewed from an orthogonal direction orthogonal to a plane including the stacking direction and the intersecting direction; The distance (D 1 ) in the stacking direction between the first bent portion and the first base portion (441), and the second adjacent portion (452) closest to the first bent portion among the second bent portions. ) And the second base portion (451) of the second bent portion (D 2 ) in the stacking direction is a distance (D) in the intersecting direction of the flat tube inserted into the at least one insertion portion, respectively. 3 ) 0.2 to 0.9 times,
    The flat tube inserted into the at least one insertion portion is in close contact with the first proximity portion and the second proximity portion, and does not contact the first base portion and the second base portion.
    Heat exchanger (410).
  2. 　前記第１折曲部の、前記交差方向と前記直交方向を含む平面に対する折り曲げ角度（θ1）は、８０°から９０°であり、前記第２折曲部の、前記交差方向と前記直交方向を含む平面に対する折り曲げ角度（θ2）は、８０°から９０°である、
    請求項１に記載の熱交換器。     The bending angle (θ 1 ) of the first bent portion with respect to a plane including the intersecting direction and the orthogonal direction is 80 ° to 90 °, and the intersecting direction and the orthogonal direction of the second bent portion are The bending angle (θ 2 ) with respect to a plane including is 80 ° to 90 °,
    The heat exchanger according to claim 1.
  3. 　前記第１折曲部のうち前記扁平管に接しない部分の前記積層方向の長さ（Ｄ4）は、０．４ｍｍから１．２ｍｍであり、前記第２折曲部のうち前記扁平管に接しない部分の前記積層方向の長さ（Ｄ5）は、０．４ｍｍから１．２ｍｍである、
    請求項１または請求項２に記載の熱交換器。     The length (D 4 ) in the stacking direction of the portion of the first bent portion that does not contact the flat tube is 0.4 mm to 1.2 mm, and the flat tube of the second bent portion is formed on the flat tube. The length (D 5 ) in the stacking direction of the non-contact portion is 0.4 mm to 1.2 mm.
    The heat exchanger according to claim 1 or 2.
  4. 　前記第１折曲部は、前記第１近接部に続く第１湾曲部（４４３）を有し、前記第２折曲部は、前記第２近接部に続く第２湾曲部（４５３）を有する、
    請求項１から請求項３のいずれか１項に記載の熱交換器。     The first bent portion has a first curved portion (443) following the first proximity portion, and the second bent portion has a second curved portion (453) following the second proximity portion. ,
    The heat exchanger according to any one of claims 1 to 3.
  5. 　前記少なくとも１つのフィンは、前記複数の挿入部のそれぞれの前記縁部に設けられた前記折曲部を有する、
    請求項１から請求項４のいずれか１項に記載の熱交換器。     The at least one fin has the bent portion provided at the edge of each of the plurality of insertion portions.
    The heat exchanger according to any one of claims 1 to 4.
  6. 　前記複数のフィンのそれぞれは、前記複数の挿入部のそれぞれの前記縁部に設けられた前記折曲部を有する、
    請求項５に記載の熱交換器。     Each of the plurality of fins has the bent portion provided at the edge of each of the plurality of insertion portions.
    The heat exchanger according to claim 5.
PCT/JP2016/075361 2015-09-04 2016-08-30 Heat exchanger WO2017038834A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-175043 2015-09-04
JP2015175043A JP2017048994A (en) 2015-09-04 2015-09-04 Heat exchanger

Publications (1)

Publication Number Publication Date
WO2017038834A1 true WO2017038834A1 (en) 2017-03-09

Family

ID=58187658

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/075361 WO2017038834A1 (en) 2015-09-04 2016-08-30 Heat exchanger

Country Status (2)

Country Link
JP (1) JP2017048994A (en)
WO (1) WO2017038834A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862496A (en) * 1981-10-08 1983-04-13 Mitsubishi Alum Co Ltd Plate fin and method of fitting plate fin and tube together
JPH02154992A (en) * 1988-12-05 1990-06-14 Sumitomo Light Metal Ind Ltd Heat exchanger employing flat tube
JPH0395394A (en) * 1989-09-08 1991-04-19 Toshiba Corp Heat exchanger
JP2004257641A (en) * 2003-02-26 2004-09-16 Mitsubishi Electric Corp Method of manufacturing finned tube heat exchanger and air-conditioning/freezing device
JP2009186090A (en) * 2008-02-06 2009-08-20 Mitsubishi Electric Corp Heat exchanger and its manufacturing method
JP2014152955A (en) * 2013-02-06 2014-08-25 Mitsubishi Electric Corp Heat exchanger, manufacturing device of the same, and manufacturing method of the same
JP2015090266A (en) * 2013-11-07 2015-05-11 エルジー エレクトロニクス インコーポレイティド Heat exchanger and method of producing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862496A (en) * 1981-10-08 1983-04-13 Mitsubishi Alum Co Ltd Plate fin and method of fitting plate fin and tube together
JPH02154992A (en) * 1988-12-05 1990-06-14 Sumitomo Light Metal Ind Ltd Heat exchanger employing flat tube
JPH0395394A (en) * 1989-09-08 1991-04-19 Toshiba Corp Heat exchanger
JP2004257641A (en) * 2003-02-26 2004-09-16 Mitsubishi Electric Corp Method of manufacturing finned tube heat exchanger and air-conditioning/freezing device
JP2009186090A (en) * 2008-02-06 2009-08-20 Mitsubishi Electric Corp Heat exchanger and its manufacturing method
JP2014152955A (en) * 2013-02-06 2014-08-25 Mitsubishi Electric Corp Heat exchanger, manufacturing device of the same, and manufacturing method of the same
JP2015090266A (en) * 2013-11-07 2015-05-11 エルジー エレクトロニクス インコーポレイティド Heat exchanger and method of producing the same

Also Published As

Publication number Publication date
JP2017048994A (en) 2017-03-09

Similar Documents

Publication Publication Date Title
US9328973B2 (en) Heat exchanger and air conditioner
US20130299141A1 (en) Heat exchanger and air conditioner
JP7292510B2 (en) heat exchangers and air conditioners
JP5911597B2 (en) Flat shape heat transfer tube, method of manufacturing cross fin tube type heat exchanger equipped with the same, cross fin tube type heat exchanger manufactured by the method
US11384988B2 (en) Heat exchanger
WO2017135442A1 (en) Heat exchanger
WO2022014515A1 (en) Heat exchanger
JP5081881B2 (en) Air conditioner
CN112567192A (en) Heat exchanger, heat exchanger unit, and refrigeration cycle device
JP2011112315A (en) Fin tube type heat exchanger and air conditioner using the same
WO2017038834A1 (en) Heat exchanger
WO2022158574A1 (en) Heat exchanger
JP2016121838A (en) Heat exchanger
EP3550247A1 (en) Heat exchanger and air conditioner
WO2017038857A1 (en) Heat exchanger and method for producing heat exchanger
WO2020165970A1 (en) Heat exchanger for air conditioning
US11248856B2 (en) Refrigeration apparatus
JP6486718B2 (en) Heat exchanger
JP2008082619A (en) Heat exchanger
JPWO2020178966A1 (en) Gas header, heat exchanger and refrigeration cycle equipment
JP2000105095A (en) Heat exchanger
WO2024089927A1 (en) Heat exchanger and refrigeration cycle device with said heat exchanger
WO2022014516A1 (en) Heat exchanger
WO2023053319A1 (en) Heat exchanger and refrigeration cycle device
WO2023053851A1 (en) Heat exchanger and air-conditioning device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16841865

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16841865

Country of ref document: EP

Kind code of ref document: A1