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WO2013161290A1 - Échangeur de chaleur à tube à ailettes - Google Patents

Échangeur de chaleur à tube à ailettes Download PDF

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Publication number
WO2013161290A1
WO2013161290A1 PCT/JP2013/002779 JP2013002779W WO2013161290A1 WO 2013161290 A1 WO2013161290 A1 WO 2013161290A1 JP 2013002779 W JP2013002779 W JP 2013002779W WO 2013161290 A1 WO2013161290 A1 WO 2013161290A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
heat exchanger
lowest point
fin
tube 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/JP2013/002779
Other languages
English (en)
Japanese (ja)
Inventor
明広 重田
昭一 横山
正宣 広田
由樹 山岡
達夫 野瀬
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.)
Panasonic Corp
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Publication of WO2013161290A1 publication Critical patent/WO2013161290A1/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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • F28D2001/0253—Particular components
    • F28D2001/026—Cores
    • F28D2001/0273—Cores having special shape, e.g. curved, annular

Definitions

  • the present invention relates to a finned-tube heat exchanger, and more particularly to a finned-tube heat exchanger that performs heat exchange using a refrigerant.
  • this type of finned tube heat exchanger (finned tube heat ⁇ ⁇ exchanger) has a wave-portion irregularity on the fin to promote heat transfer in response to the pursuit of high efficiency (for example, see Patent Document 1).
  • FIG. 5 (a) is a partial plan view of the fins in the fin tube heat exchanger of Patent Document 1.
  • FIGS. 5B and 5C are an AA sectional view and a BB sectional view of FIG. 5A, respectively.
  • the finned tube heat exchanger of Patent Document 1 has fins 101 and heat transfer tubes 102 as shown in FIGS. 5 (a) and 5 (c). As shown in FIG. 5C, a plurality of fins 101 are arranged in parallel at regular intervals, and air flows between them. As shown in FIG. 5A, the heat transfer tubes 102 are inserted into the fins 101 at a predetermined step pitch and row pitch at a substantially right angle, and the refrigerant flows inside.
  • the fin 101 includes a fin collar 109 and a tube peripheral portion 107.
  • the fin collar 109 protrudes from the surface of the fin 101 and passes the heat transfer tube 102.
  • the tube peripheral portion 107 has an annular shape with a diameter D and surrounds the fin collar 109 on the fin 101.
  • the fin 101 further includes a first inclined portion 105 and a second inclined portion 106.
  • the trough part 104a, the peak part 103, the trough part 104, the peak part 103, and the trough part 104a continue in order.
  • the fin 101 has a wave shape.
  • the 2nd inclination part 106 connects the pipe surrounding part 107 and the 1st inclination part 105 (the peak part 103).
  • the peak height H1 of the peak portion 103 is set to be larger than the distance Fp between adjacent fins 101 and smaller than twice the distance Fp. Thereby, the improvement of the heat transfer performance by a fin tube heat exchanger is aimed at.
  • FIG. 5C shows a fin tube heat exchanger in which the peak height H1 is substantially the same as the distance Fp.
  • the second inclined portion 106 is recessed.
  • the water condensed on the fins 101 accumulates and the condensed water 110 is generated.
  • the condensed water 110 has a problem that the airflow resistance increases and the heat transfer area of the fin tube heat exchanger (that is, the heat exchange performance) decreases due to a decrease in the heat transfer area of the fin 101. It was.
  • This invention solves the said conventional subject, and it aims at providing the fin tube heat exchanger which improved the heat exchange performance.
  • a finned tube heat exchanger includes a plurality of fins through which air flows, a plurality of heat transfer tubes that pass through the plurality of fins and through which fluid flows.
  • the fin includes a first inclined portion that is inclined with respect to the air flow direction so as to form alternately continuous peaks and valleys, and a tube peripheral portion that surrounds the heat transfer tube that passes through the first inclined portion.
  • a second inclined portion inclined with respect to the air flow direction so as to connect the pipe peripheral portion and the first inclined portion, and the lowest point of the pipe peripheral portion is the lowest of the second inclined portion in the gravitational direction. Located below the lower point.
  • a finned tube heat exchanger with improved heat exchange performance can be provided.
  • FIG. 5 (a), (c) BB sectional view of FIG. 5 (a) A) The figure explaining the drainage action of the conventional fin tube heat exchanger, (b) The figure explaining the drainage action of the conventional fin tube heat exchanger, (c) The drainage action of the conventional fin tube heat exchanger Illustration to explain
  • a first invention includes a plurality of fins through which air flows, and a plurality of heat transfer tubes that pass through the plurality of fins and through which fluid flows, wherein the fins are alternately continuous peaks and valleys.
  • a first inclined part inclined with respect to the air flow direction so as to form a part, a pipe peripheral part surrounding the heat transfer pipe penetrating the first inclined part, and the pipe peripheral part and the first inclined part are connected to each other
  • the fin tube heat exchanger is provided with a second inclined portion inclined with respect to the air flow direction, and the lowermost point of the tube peripheral portion is located below the lowest point of the second inclined portion in the gravity direction. is there.
  • the lowest point of the pipe periphery of the first invention and the lowest point of the second inclined part are at the same position.
  • the lowest point of the pipe periphery of the first or second invention is arranged on the valley line of the valley.
  • the tube periphery of any one of the first to third inventions has a square shape, and the lowest point of the tube periphery coincides with one of the vertexes of the triangle. .
  • the tube periphery can be easily created, and the area expansion of the tube periphery can be suppressed.
  • the direction in which the straight line connecting the two vertices of the square of the pipe periphery of the fourth aspect of the invention coincides with the direction of gravity and the direction in which the valley line of the valley extends.
  • FIG. 1 is a configuration diagram of a finned tube heat exchanger according to an embodiment of the present invention.
  • Fig.2 (a) is a partial top view of the fin 1 of the fin tube heat exchanger.
  • 2 (b) and 2 (c) are cross-sectional views taken along lines AA and BB in FIG. 2 (a), respectively.
  • FIGS. 3 (a) to 3 (c) are partial plan views of the fins and the periphery of the tube of the fin tube heat exchanger in Modifications 1 to 3 of the present embodiment.
  • 4 (a) to 4 (c) are views for explaining the drainage action of the finned tube heat exchanger in the present embodiment.
  • the fin tube heat exchanger includes a plurality of fins 1, a plurality of heat transfer tubes 2, and an end plate 20.
  • the plurality of fins 1 are stacked such that a flow path is formed in the air flow direction S and the distance between them is a predetermined distance Fp. Air flows between each of the plurality of fins 1.
  • the plurality of heat transfer tubes 2 are arranged so as to penetrate the plurality of fins 1 and line up along the vertical direction. A fluid flows inside the heat transfer tube 2.
  • the end plate 20 is used as a fixing part when the fin tube heat exchanger is placed on the outdoor unit, and is also used as a connection part for connecting a plurality of fin tube heat exchangers to each other.
  • the fin 1 has a valley portion 4a, a mountain portion 3, a valley portion 4, a mountain portion 3, and a valley portion 4a successively arranged along the air flow direction S.
  • This is a corrugated fin having a wave shape.
  • the peak part 3 and the trough part 4 exist also between the adjacent heat exchanger tubes 2, as shown to Fig.2 (a).
  • the ridge line of the mountain part 3 and the valley line of the valley part 4 are substantially parallel to each other.
  • the fin 1 further includes a cylindrical fin collar 9. By performing mechanical expansion or hydraulic expansion on the heat transfer tube 2 inserted into the fin collar 9, the fin 1 and the heat transfer tube 2 are joined to each other.
  • the fin 1 includes a first inclined portion 5 inclined with respect to the air flow direction S so as to form alternately continuous peaks 3 and valleys 4, and a first inclination.
  • the lowest point 30 of the tube peripheral portion 7 is positioned below the lowest point of the second inclined portion 6 in the gravity direction G.
  • the fin tube heat exchanger in which the lowest point 30 of the tube peripheral portion 7 and the lowest point of the second inclined portion are in the same position (coincident with each other).
  • the present invention is not limited to such a case, and the lowest point 30 of the tube surrounding portion 7 only needs to be positioned below the lowest point of the second inclined portion 6 in the gravity direction G.
  • a fin tube heat exchanger is illustrated in which the tube peripheral portion 7 is formed as a flat portion parallel to the air flow direction S. It may be inclined with respect to the flow direction S, or may be an undulating portion.
  • the second inclined portion 6 and the tube surrounding portion 7 are formed in line symmetry with respect to the gravity direction G. Further, the lowest point 30 and the highest point 31 of the pipe surrounding part 7 are located on the valley line of the valley part 4. That is, the direction in which the straight line connecting the lowest point 30 and the highest point 31 of the tube surrounding part 7 extends coincides with the direction in which the valley line of the valley part 4 extends and the gravity direction G.
  • the pipe peripheral part 7 has a dimension W1 in a direction perpendicular to the gravity direction G (width direction) and a dimension W2 in the direction of gravity direction G (length direction).
  • the relationship between the dimension W1 and the dimension W2 may be set to W1 ⁇ W2 ⁇ W1 ⁇ 1.5.
  • the shape of the tube peripheral portion 7 is a substantially square shape that is relatively easy to process and can suppress area expansion.
  • the triangle means a polygon composed of two vertices and two sides connecting between the vertices.
  • FIGS. 3 (a) to 3 (c) show the tube peripheral portion of the finned tube heat exchanger according to the first to third modifications of the present embodiment.
  • the shape of the tube peripheral portion 7a is a substantially parallelogram.
  • tube periphery part 7b is a substantially ellipse.
  • tube periphery part 7c is a substantially hexagon.
  • the finned tube heat exchanger in the present embodiment performs heat exchange between the air passing between the plurality of fins 1 and the refrigerant flowing inside the plurality of heat transfer tubes 2.
  • the refrigerant flowing inside the heat transfer tube 2 may be, for example, R410A, propane, propylene, carbon dioxide or the like having a low environmental load, but is not particularly limited thereto.
  • the air passing between the plurality of laminated fins 1 meanders by being meandered by the crest 3, trough 4 and trough 4 a formed in the fin 1.
  • a flow Sc is formed.
  • turbulent flow can be promoted and the temperature boundary layer can be made thinner, and as a result, the heat exchange performance in the finned tube heat exchanger can be improved.
  • FIGS. 4 (a) to 4 (c) are arranged in time series (in chronological order).
  • the fin tube heat exchanger is used as an evaporator.
  • the water can be smoothly guided and drained from the lowest point 30 to the lower side of the gravity direction G through the valley portion 4 without causing the second inclined portion 6 to retain water. Therefore, an increase in ventilation resistance and a decrease in the heat transfer area of the fin can be suppressed, and the heat exchange performance can be improved.
  • the lowest point of the pipe peripheral part 7 is located below the lowest point of the second inclined part 6, it is possible to prevent water staying in the pipe peripheral part 7 from staying in the second inclined part 6. it can. Thereby, the increase in the ventilation resistance by water and the reduction in the heat transfer area can be suppressed, and as a result, the heat exchange performance of the finned tube heat exchanger can be improved.
  • frost may adhere to the surface of the fin 1, and water is generated in the pipe peripheral portion 7 even when the frost is melted, but the fin tube heat exchanger of the present embodiment According to this, the water generated in this way can be drained smoothly. Therefore, it can suppress that frost grows again and can reduce the frequency which melts frost, and can improve the energy efficiency as a heat pump apparatus as a result.
  • the tube peripheral portion 7 is formed line-symmetrically with respect to the gravitational direction G, and the valley portion 4 connects the lowest point 30 and the highest point 31. Is formed. Thereby, since one flow path is formed with respect to the water which flows on the fin 1 by the pipe
  • the lowest point 30 of the tube peripheral portion 7 is disposed on the valley line of the valley portion 4.
  • the straight line connecting the lowest point 30 and the highest point 31 of the tube peripheral part 7 and the valley line of the valley part 4 are both the same including the central axis P of the fin collar 9. It is formed in the plane.
  • the tube periphery 7 has a square shape, and the lowest point 30 of the tube periphery 7 coincides with one of the apexes of the triangle.
  • the direction in which the straight line connecting the two vertexes of the rectangular shape of the tube peripheral portion 7 (in this embodiment, the lowest point 30 and the highest point 31) extends is , The direction of gravity G and the direction in which the valley lines of the valley 4 extend. According to such an arrangement, it is possible to form one flow path along the gravity direction G of the water staying in the tube peripheral portion 7 by the tube peripheral portion 7 and the valley portion 4. Therefore, the drainage of water can be improved, and as a result, the heat exchange performance of the finned tube heat exchanger can be improved.
  • this invention is not limited to the above-mentioned structure, It can implement in another various aspect.
  • the case where the heat transfer tube 2 is a round tube has been described.
  • the present invention is not limited to such a case, and may be a flattened tube.
  • the finned tube heat exchanger according to the present embodiment can improve the drainage performance by the tube peripheral portion formed so as to surround the heat transfer tube, the air conditioner, the hot water supply device, and the heating device It can be applied to a heat exchanger used for such as.

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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

La présente invention concerne un échangeur de chaleur à tube à ailettes pourvu d'ailettes comprenant : une première section inclinée qui est inclinée par rapport à la direction d'écoulement de l'air de façon à former des sections de pic et des sections de creux alternant en continu, une section périphérie de tube qui entoure un tube de transfert de chaleur qui passe à travers la première section inclinée, et une seconde section inclinée qui est inclinée par rapport à la direction d'écoulement de l'air de façon à raccorder la section périphérie de tube et la première section inclinée. Le point le plus bas de la section périphérie de tube est positionné plus bas dans la direction de la force de gravité que le point le plus bas de la seconde section inclinée. Par conséquent, la performance d'échange de chaleur de l'échangeur de chaleur à tube à ailettes est améliorée.
PCT/JP2013/002779 2012-04-25 2013-04-24 Échangeur de chaleur à tube à ailettes Ceased WO2013161290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-099468 2012-04-25
JP2012099468A JP2013228125A (ja) 2012-04-25 2012-04-25 フィンチューブ熱交換器

Publications (1)

Publication Number Publication Date
WO2013161290A1 true WO2013161290A1 (fr) 2013-10-31

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PCT/JP2013/002779 Ceased WO2013161290A1 (fr) 2012-04-25 2013-04-24 Échangeur de chaleur à tube à ailettes

Country Status (2)

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JP (1) JP2013228125A (fr)
WO (1) WO2013161290A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017120124A1 (de) * 2017-09-01 2019-03-07 Miele & Cie. Kg Lamellenrohrwärmeübertrager
DE102017120123A1 (de) * 2017-09-01 2019-03-07 Miele & Cie. Kg Lamellenrohrwärmeübertrager
EP4354070A1 (fr) * 2022-10-12 2024-04-17 LG Electronics Inc. Echangeur de chaleur
US20240247881A1 (en) * 2023-01-19 2024-07-25 Lg Electronics Inc. Heat exchanger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024061512A (ja) * 2022-10-21 2024-05-07 パナソニックＩｐマネジメント株式会社 扁平管熱交換器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08178573A (ja) * 1994-12-22 1996-07-12 Daikin Ind Ltd クロスフィン熱交換器
JPH10281674A (ja) * 1997-04-07 1998-10-23 Daikin Ind Ltd 室外機用クロスフィン熱交換器
JP2000193389A (ja) * 1998-12-28 2000-07-14 Hitachi Ltd 空気調和機の室外ユニット

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08178573A (ja) * 1994-12-22 1996-07-12 Daikin Ind Ltd クロスフィン熱交換器
JPH10281674A (ja) * 1997-04-07 1998-10-23 Daikin Ind Ltd 室外機用クロスフィン熱交換器
JP2000193389A (ja) * 1998-12-28 2000-07-14 Hitachi Ltd 空気調和機の室外ユニット

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017120124A1 (de) * 2017-09-01 2019-03-07 Miele & Cie. Kg Lamellenrohrwärmeübertrager
DE102017120123A1 (de) * 2017-09-01 2019-03-07 Miele & Cie. Kg Lamellenrohrwärmeübertrager
EP4354070A1 (fr) * 2022-10-12 2024-04-17 LG Electronics Inc. Echangeur de chaleur
US20240247881A1 (en) * 2023-01-19 2024-07-25 Lg Electronics Inc. Heat exchanger

Also Published As

Publication number Publication date
JP2013228125A (ja) 2013-11-07

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