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WO2017038857A1 - Échangeur de chaleur, et procédé de fabrication de celui-ci - Google Patents

Échangeur de chaleur, et procédé de fabrication de celui-ci Download PDF

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Publication number
WO2017038857A1
WO2017038857A1 PCT/JP2016/075428 JP2016075428W WO2017038857A1 WO 2017038857 A1 WO2017038857 A1 WO 2017038857A1 JP 2016075428 W JP2016075428 W JP 2016075428W WO 2017038857 A1 WO2017038857 A1 WO 2017038857A1
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WO
WIPO (PCT)
Prior art keywords
fins
heat exchanger
fin
insertion port
portions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/075428
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English (en)
Japanese (ja)
Inventor
中野　寛之
泰弘 笹井
透 安東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of WO2017038857A1 publication Critical patent/WO2017038857A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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 and a method for manufacturing the heat exchanger.
  • a heat exchanger in which a first header collecting pipe, a second header collecting pipe, a flat tube, and fins are joined to each other by brazing (see Japanese Patent Application 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 and a heat exchanger manufacturing method that improve the ease of attaching a flat tube and a fin.
  • 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 port edges joined to each of the plurality of flat tubes.
  • At least one fin among the plurality of fins has at least one convex portion. At least one convex part protrudes in the lamination direction, and is deformed when the plurality of flat tubes are joined to the plurality of insertion port edges.
  • At least one fin has a convex portion that protrudes in the stacking direction and deforms when the plurality of flat tubes are joined to the plurality of insertion port edges.
  • the convex portion is deformed, so that at least one insertion port edge is expanded.
  • the frictional force between the insertion edge and the flat tube is reduced. Since the frictional force is reduced, the ease of attaching the flat tube and the fin can be improved. As a result, it can be expected that damage to the flat tube and the fins is suppressed.
  • the at least one fin protrudes from the at least one insertion port edge at a position separated in the orthogonal direction perpendicular to the plane including the stacking direction and the intersecting direction.
  • At least one fin has at least one convex portion at the above-described position, it is possible to effectively widen at least one insertion port edge.
  • At least one fin has a plurality of convex portions.
  • the plurality of convex portions are formed at positions separated from each of the plurality of insertion opening edge portions in the orthogonal direction.
  • the heat exchanger according to the third aspect of the present invention since at least one fin has a plurality of convex portions at the above-described positions, that is, the number of convex portions corresponding to the number of insertion port edges, all the insertion ports of the fins The part can be effectively expanded. Therefore, in all the fins having a plurality of convex portions, the ease of attaching the flat tube and the fins can be improved.
  • each of the plurality of fins has a plurality of convex portions.
  • the plurality of convex portions in each of the plurality of fins are formed at positions separated from each of the plurality of insertion port edge portions in the orthogonal direction.
  • At least one fin has a convex portion between at least one insertion port edge and an insertion port edge adjacent to the at least one insertion port edge.
  • At least one fin has at least one convex portion at the above-described position, at least two insertion port edge portions opposed to each other with the convex portion interposed therebetween are effectively provided. Can be spread.
  • At least one fin has a plurality of convex portions.
  • the plurality of convex portions are formed on each of the plurality of insertion opening edge portions between two adjacent insertion opening edge portions.
  • At least one fin has a plurality of convex portions, that is, a number of convex portions which is one less than the total number of the insertion port edge portions at the above-described position.
  • the convex part is formed adjacent to all the insertion opening edge parts, all the insertion opening edge parts of the said fin can be expanded effectively. Therefore, in all the fins having a plurality of convex portions, the ease of attaching the flat tube and the fins can be improved.
  • each of the plurality of fins has a plurality of convex portions.
  • the plurality of convex portions in each of the plurality of fins are formed on each of the plurality of insertion opening edge portions between two adjacent insertion opening edge portions.
  • all the fins have a plurality of convex portions at the above-described positions, that is, the number of convex portions that is one less than the total number of the insertion port edge portions.
  • the convex portions are formed adjacent to all the insertion opening edges, it is possible to effectively widen all the insertion opening edges of all the fins. Therefore, in all the fins, the ease of attaching the flat tube and the fins can be improved.
  • the method for manufacturing a heat exchanger includes a first step and a second step.
  • a plurality of fins are stacked.
  • Each of the plurality of fins has a plurality of insertion edge portions, and at least one fin has at least one convex portion.
  • the plurality of flat tubes are joined to the insertion edge of the fin.
  • the plurality of flat tubes are arranged side by side in an intersecting direction that intersects the stacking direction of the plurality of fins.
  • the convex portion of the fin protrudes in the stacking direction, and the fin is deformed when the flat tube is joined to the insertion opening edge of the fin.
  • the heat exchanger manufacturing method in the second step, at least one fin protrudes in the stacking direction, and the convex portion of the fin is deformed when the flat tube is joined to the insertion port edge.
  • the flat tube in the second step, is press-fitted into the fin insertion port, so that the flat tube is joined to the fin insertion port edge. And when a flat tube joins to the insertion port edge part of a fin, the convex part of a fin is expanded.
  • the ease of attaching the flat tube and the fins can be improved by reducing the frictional force between the insertion port edge and the flat tube. As a result, it can be expected that damage to the flat tube and the fins is suppressed.
  • At least one fin has a convex portion that is separated from at least one insertion port edge in the orthogonal direction, so that at least one insertion port edge is effectively widened. Can do.
  • the heat exchanger according to the third aspect of the present invention since at least one fin has a plurality of convex portions separated from each of the plurality of insertion port edges in the orthogonal direction, all the insertion ports of at least one fin The part can be effectively expanded. Therefore, in all the fins having a plurality of convex portions, the ease of attaching the flat tube and the fins can be improved.
  • all the fins have a plurality of convex portions separated from each of the plurality of insertion port edges in the orthogonal direction, all the insertion port edges of all the fins are provided. Can be spread effectively. Therefore, in all the fins, the ease of attaching the flat tube and the fins can be improved.
  • At least one fin has a convex portion between at least one insertion port edge and an insertion port edge adjacent to the at least one insertion port edge. At least the two insertion opening edge portions that face each other with the convex portion interposed therebetween can be effectively widened.
  • the convex portions are formed adjacent to all the insertion port edges, all the insertion port edges of the fins are effective. Can be expanded. Therefore, in all the fins having a plurality of convex portions, the ease of attaching the flat tube and the fins can be improved.
  • the convex portions are formed adjacent to all the insertion port edge portions in all the fins, all the insertion port edge portions of all the fins are effective. Can be spread. Therefore, in all the fins, the ease of attaching the flat tube and the fins can be improved.
  • the ease of attaching the flat tube and the fin is improved by reducing the frictional force between the insertion port edge and the flat tube. Can do. As a result, it can be expected that damage to the flat tube and the fins is suppressed.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is sectional drawing of the fin before a some flat tube is press-fitted in a some notch part. It is a figure explaining a 1st convex part. It is a figure explaining a 2nd convex part.
  • 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 notches 421 as an example of an insertion port.
  • 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 notch edge part 422 as an example of the insertion port edge part of the some notch part 421 is joined with each of the some flat tube 412.
  • FIG. In the present embodiment, the cutout edge 422 is formed in a U shape.
  • 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 the fins 411 before and after the flat tube 412 is press-fitted.
  • 4A is a cross-sectional view taken along the line IV-IV in FIG.
  • FIG. 4B is a cross-sectional view of the fin 411 before the plurality of flat tubes 412 are press-fitted into the plurality of notches 421.
  • 4B corresponds to FIG. 4A and is a cross-sectional view of a portion corresponding to the IV-IV cross section of FIG.
  • FIG. 5 is a diagram illustrating a first convex portion 441 described later. Specifically, it is a VV sectional view of FIG.
  • FIG. 6 is a diagram illustrating a second convex portion 442 described later. Specifically, it is a VI-VI cross-sectional view of FIG.
  • the fin 411 has a convex portion 440.
  • the convex portion 440 includes a first convex portion 441 and a second convex portion 442.
  • the 1st convex part 441 is provided corresponding to the notch part 421. More specifically, the first convex portion 441 is provided at a position away from the notch edge portion 422 in the Z-axis direction. In the present embodiment, the first convex portion 441 is provided corresponding to all the cutout portions 421. That is, the 1st convex part 441 is provided in the position away from each of all the notch edge parts 422 in the Z-axis direction.
  • the first convex portion 441 is a convex portion protruding in the X-axis direction. More specifically, as shown in FIG. 5, the notch edge 422 rises from near one end in the Y-axis direction to the center part of the notch part 421, and near the other end of the notch edge part 422 in the Y-axis direction. It goes up and down.
  • the second convex portion 442 is provided in a region 450 between two notched edge portions 422 adjacent in the Y-axis direction.
  • the 2nd convex part 442 is provided in the area
  • the second convex portion 442 is a convex portion protruding in the X-axis direction. More specifically, as shown in FIG. 6, one notch edge 422 rises from the vicinity of the other notch edge 422 side to the center portion of the region 450, and from the center portion to the other notch In the edge part 422, it swells up near the edge part of the one notch edge part 422 side.
  • the bottom part of the second convex part 442 is wider than the bottom part of the first convex part 441.
  • the first protrusion 441 and the second protrusion 442 are deformed. More specifically, since the plurality of flat tubes 412 are press-fitted into the plurality of notches 421 from the X-axis direction, the first convex portion 441 is pushed and expanded in the Y-axis direction.
  • the outdoor heat exchanger 400 includes the heat exchange unit 410, the inlet / outlet header collecting pipe 420, and the folded header collecting pipe 430, and these heat exchanges.
  • the section 410, the entrance / exit header collecting pipe 420, and the folded header collecting pipe 430 are brazed to each other.
  • a plurality of fins 411 are stacked.
  • the plurality of flat tubes 412 arranged in the Y-axis direction intersecting the stacking direction (X-axis direction) of the plurality of fins 411 are arranged in the plurality of notches 421 of the plurality of fins 411 in the X-axis direction. It is press-fitted from.
  • the first convex portion 441 and the second convex portion 442 are deformed, and the first convex portion 441 is expanded in the Y-axis direction.
  • the notched edge portions 422 of the plurality of fins 411 are joined to the flat tube 412.
  • the plurality of fins 411 and the plurality of flat tubes 412 are temporarily fixed in a state where each of the plurality of flat tubes 412 is fitted into the plurality of notches 421.
  • the plurality of temporarily fixed fins 411 and the plurality of flat tubes 412 are brazed in the next step.
  • the outdoor heat exchanger 400 of this embodiment includes a plurality of fins 411 and a plurality of flat tubes 412.
  • Each of the plurality of fins 411 has a plurality of notched edges 422 joined to each of the plurality of flat tubes 412.
  • Each of the plurality of fins 411 has the first convex portion 441 by the number of the cutout edge portions 422. More specifically, the first convex portion 441 is provided at a position away from each of the plurality of cutout edge portions 422 in the Z-axis direction. The first convex portion 441 is deformed when the plurality of flat tubes 412 are press-fitted into the plurality of cutout edge portions 422, that is, is pushed and expanded in the Y-axis direction.
  • all the notch edges 422 are expanded. That is, the width in the Y-axis direction of all the notches 421 is increased.
  • the frictional force between the notched edges 422 and the flat tube 412 is 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 plurality of fins 411 has the number of second convex portions 442 that is one less than the total number of notched edge portions 422. More specifically, each of the plurality of cutout edge portions 422 has a second convex portion 442 between two adjacent cutout edge portions 422.
  • the second convex portion 442 is deformed when the plurality of flat tubes 412 are press-fitted into the plurality of cut-out edge portions 422, that is, is pushed and expanded in the Y-axis direction. Thereby, all the notch edges 422 are expanded.
  • the notch edges 422 are expanded, so that the frictional force between the notch edges 422 and the flat tube 412 is reduced. Therefore, as described above, the ease of attaching the flat tubes 412 and the fins 411 can be improved, and as a result, it can be expected that the flat tubes 412 and the fins 411 are prevented from being damaged.
  • the fins 411 since all the fins 411 have the number of the second convex portions 442 that is one less than the total number of the notched edge portions 422, all the notched edges of all the fins 411 are included.
  • the part 422 can be effectively expanded. Therefore, in all the fins 411, the ease of attaching the flat tubes 412 and the fins 411 can be improved.
  • each of all the fins 411 has the same number of first convex portions 441 as the number of notched edge portions 422, but some of the fins 411 have a smaller number than the number of notched edge portions 422. It may have the 1st convex part 441, and does not need to have the 1st convex part 441 at all. That is, at least one fin 411 may have the same number of first convex portions 441 as the number of notched edge portions 422. In this case, in all the fins 411 having the first convex portions 441, all the notched edge portions 422 of the fins can be effectively expanded.
  • the fin having the first convex portions 441 smaller in number than the number of the notched edge portions 422 at least the notched edge portions 422 provided with the first convex portions 441 can be effectively expanded. As described above, the ease of attaching the flat tube 412 and the fins 411 can be improved.
  • the fins 411 having the same number of first convex portions 441 as the number of the notched edge portions 422 may not be present. That is, at least one fin 411 may have at least one first convex portion 441. In this case, at least one notch edge 422 of at least one fin 411 can be effectively expanded.
  • each of all the fins 411 has the number of the second convex portions 442 that is one less than the number of the notched edge portions 422, but some of the fins 411 have more than the number of the notched edge portions 422.
  • the number of the second convex portions 442 may be smaller by two or more, or the second convex portions 442 may not be included at all. That is, at least one fin 411 may have the number of second convex portions 442 that is one less than the number of notched edge portions 422. In this case, in all the fins 411 having the second protrusions 442, the ease of attaching the flat tubes 412 and the fins 411 can be improved.
  • the fin having the second convex portions 442 that is two or more smaller than the number of the notched edge portions 422 at least the two notched edge portions 422 facing each other across the second convex portions 442 can be effectively expanded. it can. As described above, the ease of attaching the flat tube 412 and the fins 411 can be improved.
  • the fins 411 having the same number of the second convex portions 442 as the number of one less than the number of the notched edge portions 422 may not be present. That is, at least one fin 411 may have at least one second convex portion 442. In this case, it is possible to effectively widen the two notched edge portions 422 of the at least one fin 411 facing each other with at least the second convex portion 442 interposed therebetween.
  • the plurality of flat tubes 412 are press-fitted into the plurality of notches 421, but may not be press-fitted.
  • the width of the plurality of cutout portions 421 in the Y-axis direction may be sufficiently larger than the width of the plurality of flat tubes 412 in the Y-axis direction. .
  • the plurality of flat tubes 412 are inserted into the plurality of cutout portions 421, they may be compressed in the Y-axis direction.
  • the first convex portion 441 is substantially flat. By compressing in the Y-axis direction, the first convex portion 441 rises in the X-axis direction. As a result, the above-described first convex portion 441 that is loose (that is, in a state of being spread) is formed.
  • the second convex portion 442 is also substantially flat. By being compressed in the Y-axis direction, the second convex portion 442 rises in the X-axis direction. Thereby, the above-described gentle second convex portion 442 is formed.
  • the first convex portion 441 and the second convex portion The shape of the part 442 is substantially the same.
  • 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.
  • an opening edge is formed as the insertion opening edge.
  • the first convex portion 441 projecting in the X-axis direction has a corner at the tip as shown in FIG. 4A
  • the second convex portion 442 projecting in the X-axis direction is shown in FIG.
  • Each convex part may include a corner with an edge, may have a smooth curved shape, or may have a sharp edge.

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  • 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

Selon l'invention, un échangeur de chaleur d'extérieur (400) qui consiste en un échangeur de chaleur dans lequel l'installation de tubes aplatis et d'ailettes est facilitée, est équipé d'une pluralité d'ailettes (411) empilées, et d'une pluralité de tubes aplatis (412) disposée en rang dans une direction axiale (Z). Chacune des ailettes (411) possède une pluralité de parties bord avec encoche (422) liée à chacun des tubes aplatis (412). Au moins une des ailettes (411) possède au moins une partie relief (440). Les parties relief (440) sont en saillie dans une direction axiale (X), et se déforment lors de la liaison de la pluralité de tubes aplatis (412) avec la pluralité de parties bord avec encoche (422).
PCT/JP2016/075428 2015-09-04 2016-08-31 Échangeur de chaleur, et procédé de fabrication de celui-ci Ceased WO2017038857A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015175042A JP2018173176A (ja) 2015-09-04 2015-09-04 熱交換器
JP2015-175042 2015-09-04

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WO2017038857A1 true WO2017038857A1 (fr) 2017-03-09

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PCT/JP2016/075428 Ceased WO2017038857A1 (fr) 2015-09-04 2016-08-31 Échangeur de chaleur, et procédé de fabrication de celui-ci

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4858434A (fr) * 1971-11-22 1973-08-16
JPS57139085U (fr) * 1981-02-17 1982-08-31
JPH0587480A (ja) * 1991-09-27 1993-04-06 Showa Alum Corp 熱交換器
JP2011202820A (ja) * 2010-03-24 2011-10-13 Mitsubishi Electric Corp 熱交換器用フィンおよび熱交換器
JP2014228236A (ja) * 2013-05-24 2014-12-08 三菱電機株式会社 扁平管熱交換器及びそれを備えた空気調和装置の室外機、扁平管熱交換器の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4858434A (fr) * 1971-11-22 1973-08-16
JPS57139085U (fr) * 1981-02-17 1982-08-31
JPH0587480A (ja) * 1991-09-27 1993-04-06 Showa Alum Corp 熱交換器
JP2011202820A (ja) * 2010-03-24 2011-10-13 Mitsubishi Electric Corp 熱交換器用フィンおよび熱交換器
JP2014228236A (ja) * 2013-05-24 2014-12-08 三菱電機株式会社 扁平管熱交換器及びそれを備えた空気調和装置の室外機、扁平管熱交換器の製造方法

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