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WO2018168772A1 - Échangeur de chaleur ayant une unité de tuyaux de transfert de chaleur - Google Patents

Échangeur de chaleur ayant une unité de tuyaux de transfert de chaleur Download PDF

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Publication number
WO2018168772A1
WO2018168772A1 PCT/JP2018/009507 JP2018009507W WO2018168772A1 WO 2018168772 A1 WO2018168772 A1 WO 2018168772A1 JP 2018009507 W JP2018009507 W JP 2018009507W WO 2018168772 A1 WO2018168772 A1 WO 2018168772A1
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WO
WIPO (PCT)
Prior art keywords
heat transfer
transfer tube
fins
tube unit
heat
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/JP2018/009507
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English (en)
Japanese (ja)
Inventor
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
Priority claimed from JP2018005693A external-priority patent/JP7001917B2/ja
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of WO2018168772A1 publication Critical patent/WO2018168772A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F28F1/14—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 longitudinally
    • F28F1/16—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 longitudinally the means being integral with the element, e.g. formed by extrusion
    • 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
    • F28F1/38—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 being staggered to form tortuous fluid passages

Definitions

  • the present invention relates to a heat exchanger having a heat transfer tube unit.
  • Some heat exchangers used in air conditioners and the like have a heat transfer tube unit in which a heat transfer tube for flowing a refrigerant and a fin for performing heat exchange are formed as an integral member.
  • the heat exchanger disclosed in Patent Document 1 Japanese Patent Laid-Open No. 2006-105489
  • the plurality of heat transfer tube units are connected to a common header.
  • a plurality of heat transfer tube units are usually arranged at narrow intervals in the heat exchanger.
  • the air flow passes through the gap between the heat transfer tube units, the air flow is subjected to resistance, so that the amount of air passing is reduced, and as a result, the heat transfer performance may not be improved as intended.
  • the heat transfer tube units are arranged at wide intervals, a part of the air flow passes through the heat exchanger without contacting the heat transfer unit, so the heat transfer performance is not improved.
  • An object of the present invention is to improve the heat transfer performance of a heat exchanger.
  • the heat exchanger includes a plurality of heat transfer tube units each having a plurality of fins and a plurality of heat transfer tubes.
  • the plurality of heat transfer tube units are arranged at intervals in the heat transfer tube unit arrangement direction.
  • the plurality of heat transfer tubes extend in the heat transfer tube extension direction perpendicular to the heat transfer tube unit arrangement direction.
  • the fins and the heat transfer tubes are alternately arranged in the heat transfer tube separation direction perpendicular to the heat transfer tube unit arrangement direction and the heat transfer tube extension direction.
  • the plurality of fins of each heat transfer tube unit are each a first inclined portion that is inclined by a positive acute angle with respect to the heat transfer tube separation direction, and a second inclined portion that is inclined by a negative acute angle with respect to the heat transfer tube separation direction, At least one of the above.
  • the airflow flowing along the heat transfer tube unit meanders according to the change in the inclination of the fins.
  • the probability that the airflow contacts the fins is increased. Therefore, the heat transfer performance of the heat exchanger is improved.
  • the heat exchanger according to a second aspect of the present invention is the heat exchanger according to the first aspect, wherein the plurality of heat transfer tube units have at least one of a first heat transfer tube unit and a second heat transfer tube unit.
  • Each of the plurality of fins of the first heat transfer tube unit is either a first fin having only a first inclined portion or a second fin having only a second inclined portion.
  • the plurality of fins of the second heat transfer tube unit includes a third fin having both the first inclined portion and the second inclined portion.
  • the first heat transfer tube unit is easy to confirm the shape because the heat transfer tube is located at the top of the meandering.
  • the second heat transfer tube unit occupies a small space because the heat transfer tube is not located at the top of the meandering.
  • the heat exchanger according to the third aspect of the present invention is the heat exchanger according to the second aspect, wherein the plurality of heat transfer tube units have both the first heat transfer tube unit and the second heat transfer tube unit.
  • the heat exchanger has two types of heat transfer tube units. Therefore, by appropriately arranging the two types of heat transfer tube units, it is possible to improve the heat transfer performance while reducing the air resistance.
  • the heat transfer tube belonging to the first heat transfer tube unit is the second heat transfer tube unit. Located between adjacent heat transfer tubes to which it belongs.
  • the heat transfer tubes belonging to the respective heat transfer tube units are not close to each other at the location where the first heat transfer tube unit and the second heat transfer tube unit are adjacent to each other. Therefore, air resistance due to the proximity of the heat transfer tubes hardly occurs at that location.
  • a heat exchanger according to a fifth aspect of the present invention is the heat exchanger according to the third aspect or the fourth aspect, wherein the first heat transfer tube units and the second heat transfer tube units are alternately arranged in the heat transfer tube unit arrangement direction. ing.
  • the heat transfer tubes belonging to the adjacent heat transfer tube units are not close to each other. Therefore, air resistance due to the proximity of the heat transfer tubes is less likely to occur.
  • a heat exchanger according to a sixth aspect of the present invention is the heat exchanger according to any one of the second to fifth aspects, wherein the plurality of fins of the first heat transfer tube unit are alternately arranged in the heat transfer tube separation direction. The first fin and the second fin are arranged.
  • the inclination of the fins of the first heat transfer tube unit is alternately reversed. Therefore, a meandering shape with a small pitch can be formed.
  • a heat exchanger according to a seventh aspect of the present invention is the heat exchanger according to any one of the second to fifth aspects, wherein the plurality of fins of the first heat transfer tube unit are two in the heat transfer tube separation direction. These are the first fins and the second fins alternately arranged as described above.
  • the inclination of the fins of the first heat transfer tube unit is reversed every one or more. Therefore, a meandering shape with a large pitch can be formed.
  • a heat exchanger according to an eighth aspect of the present invention is the heat exchanger according to any one of the second to sixth aspects, wherein the plurality of fins of the second heat transfer tube unit alternately have different projecting directions.
  • the third fins are arranged in the heat transfer tube separation direction.
  • a heat exchanger according to a ninth aspect of the present invention is the heat exchanger according to any one of the second aspect, the third aspect, the fourth aspect, the fifth aspect, and the seventh aspect.
  • the plurality of fins include all of the first fin, the second fin, and the third fin, and at least one first fin or second fin is disposed between the two third fins.
  • the inclination of the fins of the second heat transfer tube unit is reversed every one or more. Therefore, a meandering shape with a large pitch can be formed.
  • the plurality of fins are curved surfaces.
  • the plurality of curved fins form a smooth meandering shape and smoothly guide the air flow. Therefore, the air resistance can be further reduced.
  • the heat exchanger according to the first and second aspects of the present invention improves the heat transfer performance of the heat exchanger.
  • the air resistance is reduced while improving the heat transfer performance.
  • the heat exchanger according to the sixth aspect, the seventh aspect, the eighth aspect, and the ninth aspect of the present invention provides variations of the meandering pitch of the fins of the heat transfer tube unit, and can select a heat exchanger suitable for the application. it can.
  • FIG. 1 is a schematic diagram showing an outer shape of a heat exchanger 10.
  • FIG. FIG. 3 is a schematic diagram showing an outer shape of a heat transfer tube unit 30. It is a schematic diagram of the heat exchanger tube unit group 35A of the heat exchanger 10 which concerns on 1st Embodiment. It is a mimetic diagram of heat exchanger tube unit group 35A 'of heat exchanger 10 concerning modification 1A of a 1st embodiment. It is a schematic diagram which shows the external shape of the heat exchanger 10 which concerns on the modification 1B of 1st Embodiment. It is a schematic diagram which shows the external shape of the heat exchanger tube unit 30 of the heat exchanger 10 which concerns on the modification 1B of 1st Embodiment.
  • FIG. 1 shows a heat exchanger 10 according to the first embodiment of the present invention.
  • the heat exchanger 10 is used, for example, in an air conditioner or the like, and performs heat exchange between a refrigerant and air.
  • the heat exchanger 10 includes a first pipe 41, a second pipe 42, a first header 21, a second header 22, and a heat transfer tube unit group 35.
  • the heat transfer tube unit group 35 includes a plurality of heat transfer tube units 30.
  • the first piping 41 and the second piping 42 are for passing a refrigerant. Both the first pipe 41 and the second pipe 42 can function as refrigerant inlets and outlets that can take various states such as gas, liquid, and gas-liquid two-phase.
  • the first pipe 41 is connected to the first header 21 so as to exchange refrigerant with the first header 21.
  • the second pipe 42 is connected to the second header 22 so as to exchange refrigerant with the second header 22.
  • Both the first header 21 and the second header 22 have a heat transfer tube unit connection surface 23.
  • the first header 21 and the second header 22 are arranged such that the heat transfer tube unit connection surfaces 23 face each other or substantially face each other.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35 are arranged at intervals in the heat transfer tube unit arrangement direction x.
  • Each heat transfer tube unit 30 is connected to the first header 21 and the second header at each heat transfer tube unit connection surface 23.
  • the heat transfer tube unit 30 is integrally configured from, for example, aluminum or an aluminum alloy.
  • FIG. 2 shows one heat transfer tube unit 30.
  • the heat transfer tube unit 30 includes a plurality of heat transfer tubes 31 and a plurality of fins 32.
  • the number of heat transfer tubes 31 provided in the heat transfer tube unit 30 is, for example, six or more, but is not limited thereto.
  • the heat transfer tube 31 is for moving the refrigerant between the first header 21 and the second header 22. Both ends of each heat transfer tube 31 are connected to the heat transfer tube unit connection surfaces 23 of the first header 21 and the second header 22.
  • Each heat transfer tube 31 has at least a portion extending in the heat transfer tube extension direction z, and is preferably linear.
  • the plurality of heat transfer tubes 31 are generally arranged in the heat transfer tube separation direction y if the offset in the heat transfer tube unit arrangement direction x is ignored.
  • the inner diameter of each heat transfer tube 31 is, for example, 1.5 mm or less, and preferably 0.8 mm or less.
  • the fins 32 are for exchanging heat between the refrigerant flowing through the adjacent heat transfer tubes 31 and the surrounding air. Each fin 32 is disposed between two adjacent heat transfer tubes 31. The fins 32 may be further disposed outside the outermost heat transfer tube 31 of the heat transfer tube unit 30. The fins 32 and the heat transfer tubes 31 are generally alternately arranged in the heat transfer tube separation direction y if the offset in the heat transfer tube unit arrangement direction x is ignored.
  • the air is configured to flow in a direction parallel to the yz plane by a fan or the like (not shown). The direction of the air flow may coincide with the heat transfer tube separation direction y.
  • the heat transfer tube unit arrangement direction x, the heat transfer tube separation direction y, and the heat transfer tube extension direction z intersect each other.
  • the heat transfer tube unit arrangement direction x, the heat transfer tube separation direction y, and the heat transfer tube extension direction z are perpendicular to each other.
  • the heat transfer tube unit arrangement direction x and the heat transfer tube separation direction y may be a horizontal direction, and the heat transfer tube extension direction z may be a vertical direction.
  • FIG. 3 is a schematic diagram of a heat transfer tube unit group 35A of the heat exchanger 10 according to the first embodiment of the present invention.
  • a first inclined portion S1 that is inclined by a positive acute angle with respect to the heat transfer tube separation direction y
  • a second inclination portion that is inclined by a negative acute angle with respect to the heat transfer tube separation direction y.
  • an inclined portion S2 There is an inclined portion S2.
  • all the fins 32 are configured as planes.
  • the absolute values of the positive acute angle and the negative acute angle are set to be substantially equal, for example.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35A are all the first heat transfer tube units 30A.
  • the first heat transfer tube unit 30A is either a first fin 32A in which the plurality of fins 32 each have only the first inclined portion S1, or a second fin 32B that has only the second inclined portion S2. Say something.
  • the plurality of fins 32 included in the first heat transfer tube unit 30A are generally arranged alternately in the heat transfer tube separation direction y, and the first fins 32A and the first fins 32A and the heat transfer tube separation direction y are ignored. This is the second fin 32B.
  • the heat transfer tube 31 is located at the top of the meander, so that it is easy to confirm the shape in the manufacturing process, for example.
  • FIG. 4 is a schematic diagram of a heat transfer tube unit group 35A ′ of the heat exchanger 10 according to Modification 1A of the first embodiment of the present invention. Unlike the heat transfer tube unit group 35 according to the first embodiment, in the first heat transfer tube unit 30A of the heat transfer tube unit group 35A ′ according to the modification 1A, all the fins 32 are configured as curved surfaces. Due to this curved surface, the first heat transfer tube unit 30A as a whole has, for example, a sine wave cross section.
  • the plurality of curved fins form a smooth meandering shape and smoothly guide the air flow. Therefore, the air resistance can be further reduced.
  • FIG. 5 shows a heat exchanger 10 according to Modification 1B of the first embodiment of the present invention.
  • the first header 21 and the second header 22 are arranged on the same side with respect to the heat transfer tube unit group 35A ′′.
  • the first header 21 and the second header 22 are connected to a first pipe 41 and a second pipe 42, respectively.
  • FIG. 6 shows one of the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35 ⁇ / b> A ′′ of the heat exchanger 10.
  • the heat transfer tube unit 30 includes a plurality of heat transfer tubes 31 and a plurality of fins 32.
  • Each heat transfer tube 31 has at least a portion extending in the heat transfer tube extension direction z, and is preferably linear.
  • the plurality of heat transfer tubes 31 are arranged in the heat transfer tube separation direction y.
  • the adjacent heat transfer tubes 31 are connected by a curved connecting tube 31c. That is, the heat transfer tube unit 30 has one refrigerant path constituted by the heat transfer tube 31 and the connecting tube 31c. This refrigerant path moves the refrigerant between the first header 21 and the second header 22.
  • the end of the heat transfer tube 31 is connected to any heat transfer tube unit connection surface 23 of the first header 21 and the second header 22.
  • the heat transfer tube unit 30 has fins 32 between adjacent heat transfer tubes 31.
  • the fins 32 may be further disposed outside the outermost heat transfer tube 31 of the heat transfer tube unit 30.
  • the plurality of fins 32 may be connected at the upper end or the lower end of the heat transfer tube unit 30.
  • the fin 32 has a side extending in the heat transfer tube extension direction z, and is joined to the heat transfer tube 31 at that side.
  • the fins 32 and the heat transfer tubes 31 are alternately arranged in the heat transfer tube separation direction y.
  • the direction of the air flow is set at least in a direction parallel to the yz plane, preferably in a direction that coincides with the heat transfer tube separation direction y.
  • the heat transfer tube unit 30 may be manufactured by a method other than extrusion molding of a metal material.
  • FIG. 7 is a schematic diagram of a heat transfer tube unit group 35B of the heat exchanger 10 according to the second embodiment of the present invention.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35B according to the second embodiment are all the first heat transfer tube units 30A.
  • each of the plurality of fins 32 included in the first heat transfer tube unit 30A includes the first fin 32A having only the first inclined portion S1 and the second fin 32A having only the second inclined portion S2.
  • the plurality of fins 32 included in the first heat transfer tube unit 30A are generally alternately arranged in the heat transfer tube separation direction y if the offset in the heat transfer tube unit arrangement direction x is ignored.
  • the first fin 32A and the second fin 32B included in the first heat transfer tube unit 30A are two.
  • the sheets are arranged alternately.
  • all the fins 32 are configured as planes. Other elements not mentioned are the same as those in the first embodiment.
  • the first fins 32A and the second fins 32B that are alternately arranged in the heat transfer tube separation direction y are not limited to two each.
  • the first fins 32A and the second fins 32B may be alternately arranged by three or more.
  • the spatial length of the meander cycle of the heat transfer tube unit 30 can be increased. Therefore, the air flow is less susceptible to resistance.
  • FIG. 8 is a schematic diagram of a heat transfer tube unit group 35C of the heat exchanger 10 according to the third embodiment of the present invention.
  • the plurality of fins 32 have only a positive acute angle with respect to the heat transfer tube separation direction y.
  • all the fins 32 are configured as a plane.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35C according to the third embodiment are all second heat transfer tube units 30B.
  • the second heat transfer tube unit 30 ⁇ / b> B refers to a unit in which the third fin 32 ⁇ / b> C having both the first inclined portion S ⁇ b> 1 and the second inclined portion S ⁇ b> 2 is included in the plurality of fins 32.
  • the plurality of fins 32 included in the second heat transfer tube unit 30B are all the third fins 32C.
  • the plurality of fins 32 included in the second heat transfer tube unit 30B are generally arranged in the heat transfer tube separation direction y if the offset in the heat transfer tube unit arrangement direction x is ignored.
  • the boundary between the first inclined portion S1 and the second inclined portion S2 in each fin 32 protrudes in either the positive direction or the negative direction of the heat transfer tube unit arrangement direction x.
  • the plurality of fins 32 arranged in the heat transfer tube separation direction y are alternately different in the protruding direction.
  • the fins 32 of the second heat transfer tube unit 30B are all third fins 32C, and the protruding directions of the third fins 32C are alternately reversed. Therefore, since a meandering shape with a small pitch can be formed, the contact frequency between the air flow and the fins 32 is increased, which contributes to improvement in heat transfer performance.
  • the second heat transfer tube unit 30B occupies a small space because the heat transfer tube 31 is not located at the top of the meandering. Therefore, the resistance of the air flow can be reduced, which can improve the heat transfer performance.
  • FIG. 9 is a schematic diagram of a heat transfer tube unit group 35D of the heat exchanger 10 according to the fourth embodiment of the present invention.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35D according to the fourth embodiment are all the second heat transfer tube units 30B.
  • the second heat transfer tube unit 30B includes the third fin 32C having both the first inclined portion S1 and the second inclined portion S2 in the plurality of fins 32.
  • the plurality of fins 32 of the second heat transfer tube unit 30B employed in the fourth embodiment are not only the third fins 32C but also the first fins 32A described in the first embodiment.
  • the second fin 32B is also included.
  • the plurality of fins 32 included in the second heat transfer tube unit 30B according to the fourth embodiment are generally alternately arranged in the heat transfer tube separation direction y if the offset in the heat transfer tube unit arrangement direction x is ignored.
  • the plurality of fins 32 include a plurality of third fins 32C arranged so that the protruding directions are alternately different. Further, the first fins 32A and the second fins 32B are alternately arranged at a plurality of locations sandwiched between the adjacent third fins.
  • all the fins 32 are configured as planes. Other elements not mentioned are the same as those in the first embodiment.
  • the inclination of the fins 32 of the second heat transfer tube unit 30B is inverted every other one or more. Therefore, since a meandering shape with a large pitch can be formed, the resistance of the air flow can be reduced, which may improve the heat transfer performance.
  • Modifications (3-1) Number of alternately arranged fins
  • the number of first fins 32A and second fins 32B alternately arranged at a plurality of locations sandwiched between adjacent third fins 32C is limited to one. I can't.
  • two or more first fins 32A and second fins 32B may be alternately arranged.
  • the pitch of the meandering shape of the heat transfer tube unit 30 can be increased, so that the air flow is less susceptible to resistance. Therefore, the heat transfer performance may be improved as in the second embodiment.
  • FIG. 10 is a schematic diagram of a heat transfer tube unit group 35E of the heat exchanger 10 according to the fifth embodiment of the present invention.
  • the plurality of fins 32 include only a positive acute angle with respect to the heat transfer tube separation direction y.
  • all the fins 32 are configured as a plane.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35E are the first heat transfer tube unit 30A used in the first embodiment and the second heat transfer tube unit 30B used in the third embodiment. Since the structure of the first heat transfer tube unit 30A and the second heat transfer tube unit 30B has already been described, description thereof is omitted here.
  • the first heat transfer tube units 30A and the second heat transfer tube units 30B are alternately arranged in the heat transfer tube unit arrangement direction x. Thereby, from the viewpoint of facing the heat transfer tube unit arrangement direction x, the heat transfer tubes 31 belonging to the first heat transfer tube unit 30A are located between the adjacent heat transfer tubes 31 belonging to the second heat transfer tube unit 30B.
  • the heat exchanger 10 has two types of heat transfer tube units, that is, a first heat transfer tube unit 30A and a second heat transfer tube unit 30B. Therefore, by appropriately arranging the two types of heat transfer tube units, it is possible to improve the heat transfer performance while reducing the air resistance.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35E are not limited to the two types of the first heat transfer tube unit 30A and the second heat transfer tube unit 30B. There may be three or more types.
  • the heat transfer tube unit group 35E may be configured by preparing three types of heat transfer tube units in which the positions of the heat transfer tubes are shifted by 1/3 of the fin width and arranging them regularly.
  • FIG. 11 is a schematic diagram of a heat transfer tube unit group 35F of the heat exchanger 10 according to the sixth embodiment of the present invention.
  • the plurality of fins 32 have only a positive acute angle with respect to the heat transfer tube separation direction y.
  • all the fins 32 are configured as a plane.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35F are the first heat transfer tube unit 30A used in the second embodiment and the second heat transfer tube unit 30B used in the fourth embodiment. Since the structure of the first heat transfer tube unit 30A and the second heat transfer tube unit 30B has already been described, description thereof is omitted here.
  • the first heat transfer tube units 30A and the second heat transfer tube units 30B are alternately arranged in the heat transfer tube unit arrangement direction x. Thereby, from the viewpoint of facing the heat transfer tube unit arrangement direction x, the heat transfer tubes 31 belonging to the first heat transfer tube unit 30A are located between the adjacent heat transfer tubes 31 belonging to the second heat transfer tube unit 30B.
  • the plurality of heat transfer tube units 30 constituting the heat transfer tube unit group 35F include the first heat transfer tube unit 30A and the first heat transfer tube unit 30A. There may be not only two types of the two heat transfer tube units 30B but also three or more types.
  • This configuration may improve the heat transfer performance of the heat exchanger as described in the modification of the fifth embodiment.
  • the number of first fins 32A and second fins 32B that are alternately arranged in the heat transfer tube separation direction y is not limited to two.
  • three or more first fins 32A and second fins 32B may be alternately arranged.
  • the number of the first fins 32A and the second fins 32B alternately arranged in a plurality of gaps defined by the adjacent third fins is not limited to one.
  • two or more first fins 32A and second fins 32B may be alternately arranged.
  • the configuration of the heat transfer tube unit described above may be applied to a flat tube for heat exchange.
  • the flat tube for heat exchange is a member used for, for example, a microchannel heat exchanger.
  • the flat tube for heat exchange has a meandering shape as shown in FIG.
  • the flat tube for heat exchange has heat transfer tubes 31 and fins 32 that are alternately arranged in the heat transfer tube separation direction y.

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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

Échangeur de chaleur (10) pourvu d'une pluralité d'unités (30) de tuyaux de transfert de chaleur ayant une pluralité d'ailettes (32) et une pluralité de tuyaux de transfert de chaleur (31). La pluralité d'unités (30) de tuyaux de transfert de chaleur sont disposées à intervalles le long de la direction d'agencement (x) de l'unité de tuyaux de transfert de chaleur. Dans les unités (30) de tuyaux de transfert de chaleur, la pluralité de tuyaux de transfert de chaleur (31) s'étendent dans la direction d'extension (z) du tuyau de transfert de chaleur perpendiculaire à la direction d'agencement (x) de l'unité de tuyaux de transfert de chaleur. De plus, les ailettes (32) et les tuyaux de transfert de chaleur (31) sont disposés en alternance le long de la direction d'espacement (y) des tuyaux de transfert de chaleur perpendiculaire à la direction d'extension (z) des tuyaux de transfert de chaleur et à la direction d'agencement (x) de l'unité de tuyaux de transfert de chaleur. Chaque ailette de la pluralité d'ailettes (32) des unités (30) de tuyaux de transfert de chaleur comprend une première partie inclinée (S1) inclinée selon un angle aigu positif par rapport à la direction d'espacement (y) des tuyaux de transfert de chaleur et/ou une seconde partie inclinée (S2) inclinée selon un angle aigu négatif par rapport à la direction d'espacement (y) des tuyaux de transfert de chaleur.
PCT/JP2018/009507 2017-03-16 2018-03-12 Échangeur de chaleur ayant une unité de tuyaux de transfert de chaleur Ceased WO2018168772A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2017-051292 2017-03-16
JP2017051292 2017-03-16
JP2018-005693 2018-01-17
JP2018005693A JP7001917B2 (ja) 2017-03-16 2018-01-17 伝熱管ユニットを有する熱交換器

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WO2018168772A1 true WO2018168772A1 (fr) 2018-09-20

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PCT/JP2018/009507 Ceased WO2018168772A1 (fr) 2017-03-16 2018-03-12 Échangeur de chaleur ayant une unité de tuyaux de transfert de chaleur

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02115665U (fr) * 1989-02-28 1990-09-17
WO2014171095A1 (fr) * 2013-04-16 2014-10-23 パナソニック株式会社 Echangeur de chaleur

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02115665U (fr) * 1989-02-28 1990-09-17
WO2014171095A1 (fr) * 2013-04-16 2014-10-23 パナソニック株式会社 Echangeur de chaleur

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