WO2011058705A1 - Échangeur de chaleur, système de refroidissement et réfrigérateur utilisant l'échangeur de chaleur - Google Patents

Échangeur de chaleur, système de refroidissement et réfrigérateur utilisant l'échangeur de chaleur Download PDF

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Publication number
WO2011058705A1
WO2011058705A1 PCT/JP2010/006273 JP2010006273W WO2011058705A1 WO 2011058705 A1 WO2011058705 A1 WO 2011058705A1 JP 2010006273 W JP2010006273 W JP 2010006273W WO 2011058705 A1 WO2011058705 A1 WO 2011058705A1
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WO
WIPO (PCT)
Prior art keywords
collar
heat exchanger
rectangular
plate fin
rectangular portion
Prior art date
Application number
PCT/JP2010/006273
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English (en)
Japanese (ja)
Inventor
正樹 砂田
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201080045525.7A priority Critical patent/CN102575911B/zh
Publication of WO2011058705A1 publication Critical patent/WO2011058705A1/fr

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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
    • 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
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators
    • F25B2339/024—Evaporators with refrigerant in a vessel in which is situated a heat exchanger
    • F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements

Definitions

  • the present invention relates to a so-called dogbone type fin-and-tube heat exchanger used as a cooler (evaporator) in a household or commercial refrigerator, and a showcase or the like, and a cooling system and a refrigerator using the heat exchanger.
  • a dock bone type heat exchanger in which a serpentine refrigerant tube is inserted into a so-called dog bone type long hole processed into a plate fin (for example, Patent Document 1 and Patent Document 2). reference).
  • the dock bone type heat exchanger can use an economical aluminum pipe and has a possibility of high efficiency.
  • FIG. 11 to 13 show a conventional heat exchanger described in Patent Document 1.
  • FIG. 11 is a side view of a conventional heat exchanger
  • FIG. 12 is a front view of the heat exchanger
  • FIG. 13 is a perspective view of a plate fin of the heat exchanger.
  • the heat exchanger 101 includes a refrigerant tube 102 and a plate fin 103.
  • the straight tube portion and the curved tube portion of the refrigerant tube 102 are bent in a meandering manner at a predetermined pitch.
  • the plate fin 103 is provided with a plurality of long holes 104 on the plate surface.
  • a plurality of plate fins 103 are arranged with a space therebetween, and the refrigerant tube 102 is penetrated through the long hole 104. Further, in the plate fin 103, a color molding portion 104 b that can be cut and raised is provided on both sides of the long hole 104 in the longitudinal direction of the rectangular portion.
  • the color molding portion 104 b is passed when the bent tube portion of the refrigerant tube 102 passes. Is elastically deformed. After the bent tube portion of the refrigerant tube 102 passes through the long hole 104, the collar molding portion 104b returns to the original flat state or an intermediate state thereof due to elasticity. Therefore, since the area of the rectangular portion of the long hole 104 can be made as small as possible, the heat transfer area is increased and the performance of the heat exchanger is improved.
  • FIG. 14 is a perspective view of a plate fin of a different conventional heat exchanger, which is a heat exchanger described in Patent Document 2.
  • FIG. 14 In the heat exchanger 111 using the plate fin 113 of FIG. 14, the rectangular end collar 114 b and the arcuate collar 114 a are integrally formed in the long hole 114 by burring. Also in this case, since the area of the rectangular part of the long hole 114 can be made as small as possible, the heat transfer area is increased and the performance of the heat exchanger 111 is improved.
  • the collar molding portion 104b is elastically deformed when the bent tube portion of the refrigerant tube 102 passes.
  • the plate fin 103 needs to have a certain degree of strength in order for the collar molding portion 104b to return to the original flat state or an intermediate state due to elasticity.
  • the plate fin 103 is made thicker. That is, in Patent Document 1, the reason why the color molding portion does not exist in the arc portion of the long hole 104 is considered that the plate fin 103 is thick, and it is not necessary to dare to attach the color molding portion. Therefore, since the plate thickness of the plate fin 103 cannot be reduced, there is a problem that the material cost increases.
  • the rectangular end collar 114b and the arcuate collar 114a are integrally formed in the elongated hole 114 by burring. Therefore, at first glance, it seems that the mold can be inexpensive because the processing of the arc portion and the rectangular portion can be completed at the same time.
  • the arc portion tip is a process in which the material extends
  • the rectangular portion tip is a process in which the material does not extend. In order to stabilize the shape of the joint portion between the arc portion collar 114a and the rectangular portion end collar 114b, it is necessary to devise material characteristics and a mold, and processing becomes difficult.
  • the heat exchanger 111 when used as an evaporator, water droplets are likely to collect at the joint portion between the arc portion collar 114a and the rectangular portion end collar 114b. Therefore, the cooling performance at the time of wet start after defrosting is lowered, and clogging due to frost formation may be a factor of reducing the cooling performance.
  • the present invention provides a plurality of long holes on a plate surface comprising a refrigerant tube in which a straight pipe portion and a curved pipe portion are continuously bent in a meandering manner, and a rectangular portion and arc portions provided on both short sides of the rectangular portion.
  • a collar cut and raised with respect to one surface of the plate fin is provided in the portion, and the rectangular portion collar formed in the rectangular portion of the collar and the arc portion collar formed in the arc portion are divided.
  • the bent portion of the refrigerant tube does not come into contact with the rectangular collar when passing through the long hole, and it is necessary to increase the plate thickness in order to increase the strength of the plate fin. Disappears.
  • the plate fins need to be stretchable, and it is difficult to process the thin product. Therefore, the processability of color molding becomes easy. Further, since water droplets do not accumulate at the joint between the arc portion collar and the rectangular portion collar, clogging with frost formation is less likely to occur.
  • FIG. 1 is a side view of a heat exchanger according to Embodiment 1 of the present invention.
  • FIG. 2 is a front view of the heat exchanger.
  • FIG. 3 is a perspective view of a plate fin of the heat exchanger.
  • 4 is a side view seen from a direction perpendicular to the cross section taken along line 4-4 of FIG.
  • FIG. 5 is a perspective view of a plate fin of the heat exchanger according to the second embodiment of the present invention.
  • 6 is a side view seen from a direction perpendicular to the cross section taken along line 6-6 of FIG.
  • FIG. 7 is an enlarged perspective view of the plate fin portion of the heat exchanger according to Embodiment 3 of the present invention.
  • FIG. 8 is an enlarged perspective view of different plate fin portions of the heat exchanger.
  • FIG. 9 is a schematic diagram of a cooling system according to Embodiment 4 of the present invention.
  • FIG. 10 is a schematic diagram of a refrigerator according to Embodiment 4 of the present invention.
  • FIG. 11 is a side view of a conventional heat exchanger.
  • FIG. 12 is a front view of the heat exchanger.
  • FIG. 13 is a perspective view of a plate fin of the heat exchanger.
  • FIG. 14 is a perspective view of a plate fin of a different conventional heat exchanger.
  • FIG. 1 is a side view of a heat exchanger according to Embodiment 1 of the present invention
  • FIG. 2 is a front view of the heat exchanger
  • FIG. 3 is a perspective view of plate fins of the heat exchanger
  • FIG. It is the side view seen from the direction perpendicular
  • the heat exchanger 1 includes a refrigerant tube 2 in which a refrigerant flows and a plurality of plate fins 3 arranged at predetermined intervals.
  • a single tube made of aluminum or aluminum alloy is formed by continuously connecting a straight tube portion 2a and a curved tube portion 2b.
  • the refrigerant tube 2 is a serpentine tube bent in a meandering manner so as to be plural in the row (left and right in FIG. 2) direction X and the step (up and down in FIG. 2) direction Y.
  • coolant tube 2 forms the one refrigerant
  • the long hole 4 has a rectangular portion 4d and a circular arc portion 4c, and is formed in a long hole shape in which the circular arc portions 4c are continuously formed on both short sides of the rectangular portion 4d.
  • the arc portion 4c is provided with an arc portion collar 4a formed with an edge for tightly fixing to the straight pipe portion 2a.
  • a rectangular portion collar 4b formed with a substantially vertical edge is provided.
  • the plate fin 3 collars cut and raised with respect to one surface 3a of the plate fin 3 are provided on both sides of the rectangular portion 4d in the longitudinal direction and on the arc portion 4c.
  • the color is composed of a rectangular portion collar 4b and an arc portion collar 4a.
  • the curved pipe portion 2b is inserted into the long hole 4 and passes through. Since the rectangular portion collar 4b is formed with a substantially vertical edge, the bent tube portion 2b can pass through without contacting the rectangular portion collar 4b. If the edge of the rectangular part collar 4b is not raised, when the curved pipe part 2b passes, the rectangular part collar 4b passes through while spreading. Therefore, the curved pipe portion 2b cannot be inserted into the long hole 4 unless the strength is increased by increasing the thickness of the plate fin 3 or the like. Therefore, the plate thickness of the plate fin 3 can be reduced.
  • the curved pipe portion 2b is flattened so that it can be inserted into the width of the rectangular portion 4d.
  • the diameter of the refrigerant tube 2 is expanded by a hydraulic expansion tube or the like, and when the plurality of plate fins 3 are tightly fixed, the bent tube portion 2b has an original diameter of about The flatness is restored.
  • the plate fin 3 needs to be stretchable, and it is difficult to process the plate fin 3 with a thin product.
  • the rectangular part collar 4b and the arcuate part collar 4a are divided, the process of integral molding becomes easy. Therefore, the plate fin 3 can be thin.
  • the heat exchanger 1 achieves high reliability and high efficiency.
  • the height Hb of the rectangular collar 4b and the height Ha of the arc collar 4a are the same. As a result, it is easy to burring the arcuate collar 4a and the rectangular collar 4b at the same time.
  • the frictional resistance between the burring type punch die and the plate fin 3 material is the same in the arc portion 4c and the rectangular portion 4d. Therefore, the processing balance of the mold is improved, the mold life is extended, and the inexpensive heat exchanger 1 is provided.
  • an angle ⁇ formed by a straight line 31 extending from a rectangular portion collar 4 b in the longitudinal direction of the long hole 4 with respect to the vertical line 30 is 45 degrees or less and 0 degrees or more.
  • the heat exchanger 1 When the heat exchanger 1 is used as an evaporator, as the angle ⁇ is closer to 0 degrees, the water droplets at the time of defrosting are more likely to flow down, so that the water droplets are more difficult to collect. In addition, when the frost is formed, the air passage is less likely to be blocked, and a decrease in cooling capacity is suppressed. Moreover, since it becomes possible to avoid clogging with frost formation and maintain the cooling performance after defrosting, the heat exchanger 1 achieves high reliability and high efficiency. However, when the angle ⁇ is close to 0 degrees, the overlapping of the refrigerant tubes 2 in the vertical direction increases, the heat exchange efficiency decreases, and the length of the heat exchanger 1 in the vertical direction also increases. Therefore, the range of the angle ⁇ is preferably 45 degrees or less and 0 degrees or more.
  • FIG. 5 is a perspective view of a plate fin of the heat exchanger according to the second embodiment of the present invention
  • FIG. 6 is a side view seen from a direction perpendicular to the cross section taken along line 6-6 of FIG.
  • the second embodiment of the present invention detailed description of the same components as those in the first embodiment is omitted.
  • the plate fin 13 has a height Hb of the rectangular collar 14b of the elongated hole 4 higher than a height Ha of the arc-shaped collar 14a of the elongated hole 4.
  • the fin material of the rectangular part 4d that is press-cut when the elongated hole 4 is formed is effectively utilized to the limit. can do. Accordingly, the heat transfer area is increased, so that the heat exchange performance is improved.
  • the amount of material scrap can be reduced and resources can be used effectively.
  • FIG. 7 is an enlarged perspective view of the plate fin portion of the heat exchanger according to Embodiment 3 of the present invention
  • FIG. 8 is an enlarged perspective view of a different plate fin portion of the heat exchanger. That is, it is the perspective view which extracted the part of the plate fin 23 from the heat exchanger 20, and was expanded.
  • the rectangular part collar 24b cut and raised at both ends in the longitudinal direction of the rectangular part 4d of the long hole 4 is forcibly bent back after passing through the refrigerant tube 2 and the same horizontal surface as the one surface 23a of the plate fin 23. I have to.
  • the vertical direction of installation of the heat exchanger 20 and the rectangular collar 24b are substantially parallel, that is, approximately parallel.
  • An arc portion collar 24a is formed on the arc portion 4c.
  • the rectangular collar 24 b cut and raised at one end in the longitudinal direction of the rectangular portion 4 d of the long hole 4 is forcibly bent back after passing through the refrigerant tube 2 to be the same as the one surface 23 a of the plate fin 23. It may be a horizontal plane. It is easier to bend back when the collar is molded at one end than at both ends of the rectangular portion 4d.
  • FIG. 9 is a schematic diagram of a cooling system according to Embodiment 4 of the present invention.
  • the cooling system 11 includes a compressor 5, a condenser 6, a decompression device 7, an evaporator 8, and a blower 9 that forcibly ventilates the evaporator 8.
  • the evaporator 8 uses the heat exchanger described in Embodiment 1-3.
  • FIG. 10 is a schematic diagram of the refrigerator according to the fourth embodiment of the present invention.
  • the refrigerator 12 cools the inside by the cooling system 11 and includes a defrosting unit 10 (defrosting heater) shown in FIG. Therefore, the refrigerator 12 has a structure in which water droplets at the time of defrosting are not clearly accumulated in the evaporator 8, and the efficiency and heat exchange performance of the defrosting are improved.
  • a defrosting unit 10 defrosting heater
  • the above heat exchanger can effectively utilize the heat transfer area of the long holes of the plate fin in the dog bone type heat exchanger. And by mounting the cooling system 11 in the refrigerator 12, the refrigerator 12 is excellent in an energy saving characteristic, becomes highly efficient and economical.
  • the present invention can be widely used as a cooler or a radiator for refrigeration equipment ranging from household use to industrial use such as refrigerators and vending machines.

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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

L'invention concerne un échangeur de chaleur comportant : un tube d'agent frigorigène soudé en une forme sinueuse comprenant des sections tronçons rectilignes et incurvés continus ; et une ailette plate où une pluralité de trous oblongs est pratiquée dans la surface de la plaque, chaque trou oblong étant formé d'une section rectangulaire et d'une section en arc réalisées au niveau des deux petits côtés de la section rectangulaire. Une pluralité d'ailettes plates est disposée de telle façon qu'elles soient mutuellement espacées et le tube d'agent frigorigène passe à travers les trous oblongs. Dans l'ailette plate, des collerettes sont réalisées de part et d'autre de la section rectangulaire dans sa direction longitudinale et au niveau des sections en arc en entaillant et en recourbant l'ailette plate en direction d'une de ses surfaces. Parmi les collerettes, les collerettes de section rectangulaire formées au niveau de la section rectangulaire sont séparées des collerettes à section en arc formées au niveau des sections en arc.
PCT/JP2010/006273 2009-11-10 2010-10-22 Échangeur de chaleur, système de refroidissement et réfrigérateur utilisant l'échangeur de chaleur WO2011058705A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201080045525.7A CN102575911B (zh) 2009-11-10 2010-10-22 热交换器以及使用该热交换器的冷却系统和冷藏库

Applications Claiming Priority (2)

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JP2009256736A JP5617220B2 (ja) 2009-11-10 2009-11-10 熱交換器およびそれを用いた冷却システムおよび冷蔵庫
JP2009-256736 2009-11-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014513788A (ja) * 2011-05-20 2014-06-05 エーバーシュペッヒャー・エグゾースト・テクノロジー・ゲーエムベーハー・ウント・コンパニー・カーゲー フィン式熱交換器
CN105928410A (zh) * 2016-06-16 2016-09-07 常州爱迪尔制冷科技有限公司 具有翻翅的翅片以及换热器

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WO2013088462A1 (fr) * 2011-12-12 2013-06-20 三菱電機株式会社 Réfrigérateur
JP2013224759A (ja) * 2012-04-20 2013-10-31 Panasonic Corp 冷蔵庫
JP2014228235A (ja) * 2013-05-24 2014-12-08 ホシザキ電機株式会社 熱交換器、該熱交換器を凝縮器または蒸発器に用いた冷凍装置
CN107869920B (zh) * 2016-09-23 2024-06-14 青岛海尔智能技术研发有限公司 翅片式换热器及热泵系统
CN106968774A (zh) * 2017-03-24 2017-07-21 南宁八菱科技股份有限公司 一种耐疲劳换热器主片翻边结构
CN107289807A (zh) * 2017-07-06 2017-10-24 贺迈新能源科技（上海）有限公司 改变翅片穿管换热器翅片间距的装置及翅片穿管换热器

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GB818589A (en) * 1955-02-09 1959-08-19 Chausson Usines Sa Improvements in or relating to a cooling radiator for motor vehicles
JPH0486491A (ja) * 1990-07-30 1992-03-19 Showa Alum Corp 熱交換器
JPH11333539A (ja) * 1998-05-27 1999-12-07 Matsushita Refrig Co Ltd 熱交換器の製造方法
JP2002243382A (ja) * 2001-02-21 2002-08-28 Matsushita Refrig Co Ltd 熱交換器
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GB818589A (en) * 1955-02-09 1959-08-19 Chausson Usines Sa Improvements in or relating to a cooling radiator for motor vehicles
JPH0486491A (ja) * 1990-07-30 1992-03-19 Showa Alum Corp 熱交換器
JPH11333539A (ja) * 1998-05-27 1999-12-07 Matsushita Refrig Co Ltd 熱交換器の製造方法
JP2002243382A (ja) * 2001-02-21 2002-08-28 Matsushita Refrig Co Ltd 熱交換器
JP2002257482A (ja) * 2001-03-01 2002-09-11 Harman Kikaku:Kk 熱交換器
JP2005121288A (ja) * 2003-10-16 2005-05-12 Matsushita Electric Ind Co Ltd 熱交換器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014513788A (ja) * 2011-05-20 2014-06-05 エーバーシュペッヒャー・エグゾースト・テクノロジー・ゲーエムベーハー・ウント・コンパニー・カーゲー フィン式熱交換器
CN105928410A (zh) * 2016-06-16 2016-09-07 常州爱迪尔制冷科技有限公司 具有翻翅的翅片以及换热器

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Publication number Publication date
JP5617220B2 (ja) 2014-11-05
CN104501471A (zh) 2015-04-08
CN102575911B (zh) 2014-12-10
CN102575911A (zh) 2012-07-11
CN104501471B (zh) 2017-04-12
JP2011102656A (ja) 2011-05-26

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