EP0334683A2 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

Info

Publication number
EP0334683A2
EP0334683A2 EP89303044A EP89303044A EP0334683A2 EP 0334683 A2 EP0334683 A2 EP 0334683A2 EP 89303044 A EP89303044 A EP 89303044A EP 89303044 A EP89303044 A EP 89303044A EP 0334683 A2 EP0334683 A2 EP 0334683A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
fluid
duct
members
fin members
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.)
Withdrawn
Application number
EP89303044A
Other languages
German (de)
English (en)
Other versions
EP0334683A3 (fr
Inventor
Yutaka Ishii
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.)
Sanden Corp
Original Assignee
Sanden 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 Sanden Corp filed Critical Sanden Corp
Publication of EP0334683A2 publication Critical patent/EP0334683A2/fr
Publication of EP0334683A3 publication Critical patent/EP0334683A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys
    • 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
    • F28D1/0478—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 the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators

Definitions

  • This invention relates to a heat exchanger, such as a heat exchanger for exchanging heat with air.
  • a heat exchanger 10 for exchanging heat with air for example an evaporator for an automotive air conditioning system, is disposed within an enlarged sectional area portion 20a of a duct 20 in which a first fluid, for example air, flows in the direction of arrow 21.
  • the heat exchanger 10 comprises a serpentine flat pipe 11 for the flow of a second fluid, for example a refrigerant, and fin members 12 are fixedly disposed between straight portions 11a of the flat pipe 11 as shown in Figure 2.
  • Figure 3 shows a velocity profile at a section A-B in Figure 1. According to Figure 3, the velocity of flow of the first fluid is gradually reduced towards the wall of the duct 20 from a central portion of the duct 20.
  • the first fluid flowing with an "inclined" velocity profile as mentioned above causes the heat transfer rate of the heat exchanger 10 to be smaller than if the first fluid flows with a "level" velocity profile as shown in Figure 4, in which a solid line Q and a dashed line P indicate a first fluid flow having an inclined velocity profile and a first fluid flow having a level velocity profile, respectively.
  • Japanese Patent Application Publication No. 60-175992 discloses two types of heat exchanger which utilize a concept of a fluid resistance.
  • FIG 5 shows one type of heat exchanger 110.
  • This comprises a serpentine flat pipe 111 for the flow of the second fluid, for example a refrigerant, and fin members 112 are fixedly disposed between straight portions 111a of the flat pipe 111.
  • the spacing of the adjacent straight portions 111a is gradually reduced towards the centre to gradually increase fluid resistance of the first fluid flow, towards the centre from both sides of the heat exchanger 110.
  • the velocity profile of the first fluid flow is leveled, so that the heat transfer rate of the heat exchanger 110 can be maintained as line P in Figure 4 without increasing the overall space and the cost of material of the duct and the heat exchanger.
  • FIG 6 shows another type of heat exchanger 210.
  • This comprises a serpentine flat pipe 211 for the flow of the second fluid, for example a refrigerant, and fin members 212 fixedly disposed between straight portions 211a of the flat pipe 211.
  • the spacing of the adjacent fin members 212 is gradually reduced towards the centre to gradually increase the fluid resistance of the first fluid flow, towards the centre from the sides of the heat exchanger 210.
  • the velocity profile of the first fluid flow is leveled, so that the heat transfer rate of heat exchanger 210 can be maintained as line P in Figure 4 without increasing the overall space and the cost of material of the duct and the heat exchanger.
  • the structure of the heat exchanger 110 is complicated owing to the flat pipe 111 being bent into various curvatures.
  • the structure of the heat exchanger 210 is also complicated owing to the provision of fin members 212 with different spacing.
  • a heat exchanger which is arranged to be disposed within a duct through which, in use, a first fluid flows at velocities which vary across the duct, the heat exchanger including a plurality of pipe members through which in use, a second fluid flows, the pipe members being located in parallel with one another and linked to one other; and a plurality of fin members by which heat of the second fluid is dissipated fixedly disposed between the pipe members; is characterised in that the heat exchanger has higher and lower thermally conductive fin members in respective portions of the heat exchanger exposed, in use, to respectively higher and lower velocities of the first fluid flow.
  • the heat exchanger 310 comprises a serpentine flat pipe 311 of Al alloy, such as Japanese Industrial Standard Al070.
  • the serpentine flat pipe 311 includes straight portions 311a which are located parallel to one other.
  • An inlet pipe 313 is fixedly disposed at one end opening of the serpentine flat pipe 311.
  • An outlet pipe 314 is fixedly disposed at another end opening of serpentine flat pipe 311.
  • conventional thermally conductive fin members 312d are fixedly disposed by brazing.
  • Such conventional thermal conductive fin member 312d is formed of a brazing sheet (not shown) containing a core sheet (not shown) and Al-Si alloy clad material clad (not shown) onto both sides of the core sheet.
  • the brazing sheet of conventional thermally conductive fin member 312d is 0.16mm in thickness and comprises the core sheet of 0.12mm thickness formed of Al alloy, for example AA3003 (Registered alloy of Aluminium Association U.S.A(AA)) and Al-Si alloy cladding material 0.02mm in thickness clad on both surfaces of the core sheet.
  • AA3003 Registered alloy of Aluminium Association U.S.A(AA)
  • Al-Si alloy cladding material 0.02mm in thickness clad on both surfaces of the core sheet.
  • Such high thermally conductive fin members 312a are formed of a brazing sheet 312′a containing a core sheet 312b and Al-Si alloy cladding material 312c clad onto both sides of the core sheet 312b as shown in Figure 8.
  • the brazing sheet 312′a is of 0.20mm thickness and comprises the core sheet 312b of 0.15mm thickness formed of Al alloy which consists essentially of Si 0.03-0.1 wt.%, Fe 0.05-0.3 wt.%, Zr 0.01-0.3 wt.%, In 0.001-0.009 wt.% and the balance Al, and Al-Si alloy cladding material 312c of 0.025 thickness clad on both surfaces of the core sheet 312b.
  • the core sheet 312b of the high thermally conductive fin members 312a can alternatively be of the following Al alloys:
  • the above-described heat exchanger 310 is disposed within an enlarged sectional area portion 320a of a duct 320 in which a first fluid, for example air flows in the direction of arrow 21.
  • a first fluid for example air flows in the direction of arrow 21.
  • the heat transfer rate is effectively increased owing to heat exchanging between a relatively high velocity air with the high thermally conductive fin members 312a.
  • This manner of heat exchanging can sufficiently compensate the inefficient heat exchanging between relatively low velocity air with the conventional thermally conductive fin members 312d.
  • the heat transfer rate of the whole heat exchanger can be maintained in the condition of, or even exceed, line P in Figure 4 with a simple construction.
  • the spacing of the adjacent flat portions of the pipe 311 may be constant as may the spacing of the fin members 312a and 312d.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP89303044A 1988-03-25 1989-03-28 Echangeur de chaleur Withdrawn EP0334683A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3849988U JPH01144659U (fr) 1988-03-25 1988-03-25
JP38499/88 1988-03-25

Publications (2)

Publication Number Publication Date
EP0334683A2 true EP0334683A2 (fr) 1989-09-27
EP0334683A3 EP0334683A3 (fr) 1989-11-23

Family

ID=12526953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89303044A Withdrawn EP0334683A3 (fr) 1988-03-25 1989-03-28 Echangeur de chaleur

Country Status (2)

Country Link
EP (1) EP0334683A3 (fr)
JP (1) JPH01144659U (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29707834U1 (de) * 1997-04-30 1997-07-03 Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart Flüssigkeits-Luft-Wärmetauscher
DE10049256A1 (de) * 2000-10-05 2002-04-11 Behr Gmbh & Co Serpentinen-Wärmeübertrager
DE10105202A1 (de) * 2001-01-31 2002-08-01 Behr Gmbh & Co Wärmeübertrager-Rohrblock mit mehreren geschlitzten Sammelrohren
WO2011100663A3 (fr) * 2010-02-15 2011-11-03 Donaldson Company, Inc. Agencements de serpentins pour système d'admission d'air pour turbine à gaz, et procédés associés

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60175992A (ja) * 1984-02-22 1985-09-10 Mitsubishi Heavy Ind Ltd 熱交換器
AU582139B2 (en) * 1984-03-06 1989-03-16 Furukawa Aluminum Co., Ltd. Aluminum and aluminum alloy for fin and heat exchanger using same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29707834U1 (de) * 1997-04-30 1997-07-03 Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart Flüssigkeits-Luft-Wärmetauscher
DE10049256A1 (de) * 2000-10-05 2002-04-11 Behr Gmbh & Co Serpentinen-Wärmeübertrager
US6705386B2 (en) 2000-10-05 2004-03-16 Behr Gmbh & Co. Stuttgart Serpentine heat exchanger
DE10105202A1 (de) * 2001-01-31 2002-08-01 Behr Gmbh & Co Wärmeübertrager-Rohrblock mit mehreren geschlitzten Sammelrohren
US6484796B2 (en) 2001-01-31 2002-11-26 Behr Gmbh & Co. Heat-exchanger tube block with a plurality of slotted header tubes
WO2011100663A3 (fr) * 2010-02-15 2011-11-03 Donaldson Company, Inc. Agencements de serpentins pour système d'admission d'air pour turbine à gaz, et procédés associés
CN102686852A (zh) * 2010-02-15 2012-09-19 唐纳森公司 用于燃气涡轮机进气系统的线圈结构和方法
US9016065B2 (en) 2010-02-15 2015-04-28 Donaldson Company, Inc. Coil arrangement for air intake system for gas turbine and methods
AU2011215608B2 (en) * 2010-02-15 2015-09-03 Donaldson Company, Inc. Coil arrangements for air intake system for gas turbine and methods
CN102686852B (zh) * 2010-02-15 2016-02-24 唐纳森公司 用于燃气涡轮机进气系统的线圈结构和方法

Also Published As

Publication number Publication date
EP0334683A3 (fr) 1989-11-23
JPH01144659U (fr) 1989-10-04

Similar Documents

Publication Publication Date Title
EP0440400B1 (fr) Echangeur de chaleur
US5513432A (en) Heat exchanger and method for manufacturing the same
AU596779B2 (en) Evaporator with improved condensate collection
US5341870A (en) Evaporator or evaporator/condenser
US4716959A (en) Aluminum heat exchangers and method for producing the same
US5360060A (en) Fin-tube type heat exchanger
GB2133525A (en) Heat exchange tube
US4469168A (en) Fin assembly for heat exchangers
WO2005033606A1 (fr) Tube pour echangeur thermique
JP4105320B2 (ja) 熱交換器
JPH0590173U (ja) フィン・チューブ式熱交換器
JPH0823477B2 (ja) 積層型熱交換器
EP0334683A2 (fr) Echangeur de chaleur
EP1548384A2 (fr) Echangeur de chaleur du type empilé à passage multiple
CZ293383B6 (cs) Teplosměnná trubka pro vedení chladiva
EP0519451A1 (fr) Echangeur de chaleur
Webb et al. Brazed aluminum condensers for residential air conditioning
EP0632246B1 (fr) Echangeur de chaleur
WO2001031274A1 (fr) Tuyauterie a micro-orifices multiples et procede de fabrication
JPH0545474U (ja) 熱交換器
Sugihara et al. Performance of parallel flow condensers in vehicular applications
CN218627912U (zh) 一种换热管、换热器和空调器
JPH0195288A (ja) 熱交換器
JPH04366397A (ja) 熱交換器
JP2692236B2 (ja) 熱交換器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: F28D 1/03

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19900315

17Q First examination report despatched

Effective date: 19910129

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19910609