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WO2005078151A1 - Tube pour echangeur de chaleur, méthode de fabrication dudit tube et de l’échangeur - Google Patents

Tube pour echangeur de chaleur, méthode de fabrication dudit tube et de l’échangeur Download PDF

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Publication number
WO2005078151A1
WO2005078151A1 PCT/JP2005/002531 JP2005002531W WO2005078151A1 WO 2005078151 A1 WO2005078151 A1 WO 2005078151A1 JP 2005002531 W JP2005002531 W JP 2005002531W WO 2005078151 A1 WO2005078151 A1 WO 2005078151A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
heat exchanger
recited
aluminum heat
manufacturing
Prior art date
Application number
PCT/JP2005/002531
Other languages
English (en)
Inventor
Kazuhiko Minami
Tomoaki Yamanoi
Original Assignee
Showa Denko K.K.
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 Showa Denko K.K. filed Critical Showa Denko K.K.
Priority to US10/589,190 priority Critical patent/US20070151719A1/en
Priority to EP05710377A priority patent/EP1716266B1/fr
Priority to AT05710377T priority patent/ATE538225T1/de
Publication of WO2005078151A1 publication Critical patent/WO2005078151A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • 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
    • F28D1/0535—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 the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28F1/126—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 consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • 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

Definitions

  • the present invention relates to an aluminum heat exchanger for use in a car air-conditioning refrigeration cycle, a tube for use in such a heat exchanger, and a method for manufacturing such a tube.
  • the wording of "aluminum” is used to mean aluminum and its alloy.
  • Background Art Thefollowing description sets forththe inventor' s knowledge of related art and problems therein and should not be construed as an admission of knowledge in the prior art.
  • As an aluminumheat exchangerforuse in acarair-conditioning refrigeration system the so-called multi-flow type or parallel-flow type heat exchanger is well known.
  • a plurality of flat tubes are arranged in the thickness direction with a fin interposed therebetween, and a pair of headers are connected to both ends of the tubes in fluid communication.
  • high heat-resistant and high pressure-resistant tubes are used as tubes for heat exchangers such as condensers.
  • a tube for use in high temperature and high pressure heat exchangers a tube in which, for example, a tube core is made of Al-Mn series aluminum alloy such as JIS 3003 is widely used. Furthermore, as disclosed in Japanese Patent No.
  • Patent Document 1 Japanese Unexamined aid-open Patent Publication No. 2000-119784 (Patent Document 2), etc., for the purpose of further improving heat-resistance and pressure- resistance of a heat exchanger tube, it has been proposed to employ a tube core made of Al alloy material in which Cu is added to the aforementioned Al alloy material.
  • Patent Document 3 Japanese Unexamined Laid-open Patent Publication No. H10-265881 (Patent Document 3) discloses a technology in which Al-Si-Cu-Zn series alloy is thermally sprayed on the tube core to form a brazing material layer thereon.
  • Patent Document 3 is directed to the technology for forming a low-temperature brazing material layer on a tube, and is different from the technology for heat resistance, pressure resistance or corrosion resistance.
  • this Patent Document since a large amount of Si is contained in the alloy to be thermally sprayed, the large amount of Cu contained in the thermally sprayed Al-Simaterial on the tube gathers at the fillet as brazingmaterial. Accordingly, the strength of the tube itself cannot be increased.
  • the description herein of advantages and disadvantages of various features, embodiments, methods, and apparatus disclosed in other publications is in no way intended to limit the present invention. Indeed, certain features of the invention may be capable of overcoming certain disadvantages , while still retaining some or all of the features, embodiments, methods, and apparatus disclosed therein. Other objects and advantages of the present invention will be apparent from the following preferred embodiments.
  • the preferred embodiments of the present invention have been developed in view of the above-mentioned and/or other problems in the related art .
  • the preferred embodiments of the present invention can significantly improve upon existing methods and/or apparatuses.
  • the present invention was made in view of the aforementioned problems, and aims to provide a method for easily manufacturing a tube for use in an aluminum heat exchanger excellent in heat resistance, pressure resistance and corrosion resistance by extrusion molding, etc. It also aims to provide a tube for use in such a heat exchanger which can be manufactured by the aforementioned method, and to a heat exchanger using such a tube.
  • the present invention has the following structure.
  • a method for manufacturing a tube for use in an aluminum heat exchanger comprising the steps of: preparing an aluminum flat tube core; forming a sprayed layer on a surface of the tube core by thermally spraying alloy containing Cu (including its alloy) and
  • Cu and Zn adhering to the tube core by thermal spraying will be diffused by the heating at the time of brazing, etc., during the heat exchanger production process, and a Cu diffusion layer and a Zn diffusion layer will be formed.
  • the heat resistance and pressure resistance of the tube is improved by the Cu diffusion layer, and a sacrificial corrosion layer is ormed by the Zn diffusion layer, resulting in sufficient corrosion resistance.
  • the tube for a heat exchanger of this invention in the same manner as mentioned above, the tube can be easily manufacturedby extrusion, etc. , andis excellent inheat resistance, pressure resistance and corrosion resistance.
  • the tube can be easily manufactured by extrusion, etc., and is excellent in heat resistance, pressure resistance and corrosion resistance.
  • the following structure [19] to [20] can be preferably employed.
  • the aluminum heat exchanger as recited in the aforementioned Item 18 wherein the tube for use in a heat exchanger comprises a Cu diffusion layer for pressure resistance and heat resistance and a Zn diffusion layer for sacrifice corrosion.
  • a car air-conditioning device provided with the refrigeration cycle as recited in the aforementioned Item 21.
  • the manufacture method of the first aspect of the invention there is an effect that it is possible to easily manufacture the tube for heat exchangers excellent in heat resistance, pressure resistance and corrosion resistance by extrusion, etc.
  • the tube for heat exchangers of the second aspect of the invention there is an effect that the tube can be easily manufacturedby extrusion, etc . , andis excellent inheat resistance, pressure resistance and corrosion resistance.
  • the heat exchanger of the third aspect of the invention the heat exchanger is excellent in heat resistance, pressure resistance and corrosion resistance.
  • the refrigeration cycle of the fourth aspect of the invention it is excellent in heat resistance, pressure resistance and corrosion resistance.
  • FIG. 1 is a front view showing an aluminum heat exchanger according to an embodiment of the present invention.
  • Fig. 2 is a partially enlarged perspective view showing a brazed portion between a tube and a fin in the heat exchanger according to the embodiment of the present invention.
  • FIG. 1 is a front view showing an aluminum heat exchanger 1 according to an embodiment of the present invention.
  • this heat exchanger 1 is used as a condenser for use in a refrigeration cycle of a car air-conditioner, and constitutes the so-called multi-flow type heat exchanger.
  • a plurality of flat heat exchanging tubes 2 are horizontally arranged in parallel with their opposite ends connected to a pair of hollow headers vertically disposed in parallel in fluid communication.
  • a corrugated fin 3 is disposed between the adjacent tubes 2 and on the outermost tube 2, and a side plate 10 is arranged on the outside of the outermost corrugated fin 3.
  • the tube 2 is made of aluminum or its alloy (hereinafter simply referred to as "aluminum")
  • the fin 3 and the header 4 are made of an aluminum brazing sheet in which brazing material is clad at least on one surface thereof.
  • the tubes 2 , the fins 3 , the headers 4 and the side plates 10 are provisionally assembled into a heat exchanger assembly, and the provisional heat exchanger assembly is brazed in a furnace to be integrally brazed. As shown in Fig.
  • the tube 2 includes a tube core made of an aluminum extruded article and a thermally sprayed layer 20 containing Cu (including its alloy) and Zn (including its alloy) formed on at least one surface of the tube core .
  • a thermally sprayed layer 20 containing Cu (including its alloy) and Zn (including its alloy) formed on at least one surface of the tube core .
  • the core material of the tube Al-Mn alloy, e.g., JIS 3003 alloy, excellent in high pressure resistance (high strength) and high heat resistance can be used.
  • As the core material considering the corrosion resistance, it is preferable to use alloy containing 0.05 mass% or less of Cu.
  • the tube core is formed by extruding the aforementioned alloy material.
  • the thermally sprayed layer 20 formed on the tube core can be formed bymaking Cu and Zn adhere by thermal spraying processing.
  • Cu and Zn contained in the thermally sprayed layer 20 are diffused by the heating at the time of integral brazing during the heat exchanger manufacturing process , and form a Cu diffusion layer? and a Zn diffusion layer respectively.
  • the Cu diffusion layer is high in heat resistance and high in pressure resistance, and enhances the heat resistance and the pressure resistance (strength) of the entire tube.
  • the Zn diffusion layer is formed as a sacrificial corrosion layer, improving the corrosion resistance of the tube 2, which in turn improves the durability of the tube 2.
  • an arc thermal spraying method can be preferably employed.
  • a thermal spraying gun of an arc thermal spraying machine is moved along the tube core, or a method for thermally spraying Cu and Zn while rewinding a tube core wound in the shape of a coil.
  • a method in which a thermal spraying is continuously performed by a thermal spraying gun disposed immediately after an extrusion die is used as a thermal spraying gun.
  • the Cu thermal spraying and the Zn thermal spraying can be performed separately or at different thermal spraying positions , or can be performed simultaneously.
  • alloy containing both Cu and Zn can be thermally sprayed.
  • Cu thermal spraying and the Zn thermal spraying are performed separately, either Cu thermal spraying or Zn thermal spraying can be performed first.
  • Zn can be thermally sprayed.
  • Cu can be thermally sprayed.
  • an arc can be simultaneously generated using a Cu wire and a Zn wire to thermally spray pseudo Cu-Zn alloy.
  • Al-Cu-Zn series alloy can be thermally sprayed with an arc thermal-spraying machine, or Cu-Zn series alloy can be thermally sprayed with a flame-spraying machine.
  • the aforementioned thermal sprayingprocessing is preferably performed in inert gas atmosphere (non-oxidizing atmosphere) , such as nitrogen gas atmosphere, in order to prevent oxidization of the thermally sprayed layer 20 to be formed on the aluminummaterial (core material) surface.
  • the thermally sprayed layer 20 can be formed only on one side of the tube core, or on both sides , the upper and lower surfaces .
  • the Cu adhesion amount on the tube 2 by thermal spraying processing is preferably adjusted so as to fall within the range of 1 to 10 g/m 2 (including the upper limit and the lower limit ) , more preferably 2 to 5 g/m 2 . If the Cu adhesion amount is too low, there is a possibility that it becomes difficult to fully secure heat resistance and pressure resistance.
  • the Zn adhesion amount to a tube 2 is preferably adjusted to 1 to 20 g/m 2 , more preferably 2 to 12 g/m 2 . If the Zn adhesive amount is too low, a Zndiffusion layer, i.e. , asacrificialcorrosion layer, cannot fully be formed, which may cause deterioration of corrosion resistance.
  • the Zn adhesion amount becomes excessive, the Zn amount in a sacrificial corrosion layer increases excessively, resulting in early corrosion of the sacrificial corrosion layer, which in turn causes deterioration of durability.
  • the thermally spraying material can contain a small amount of other elements in the un-influential degree as inevitable impurities.
  • Fe can be contained by 0.6 mass% or less.
  • the ratio of the thermal-spraying area to the entire tube surface is preferably set to 50% or more, more preferably 60% or more. That is, if the area ratio is too low, the Cu and Zn containing area decreases, resulting in insufficient strength and heat resistance, and also resulting in insufficient size of a sacrificial corrosion layer, which in turn makes it difficult to secure appropriate corrosion resistance.
  • the average thickness of the thermally sprayed layer 20 is not specifically limited, it is preferably to adjust so as to have an average thickness of 0.4 to 50 ⁇ m, more preferably 0.5 to 20 ⁇ m. That is, if it is tried to excessively decrease the thickness of the thermally sprayed layer 20, it becomes difficult to control the adhesion amount of the thermally spraying material, resulting in uneven adhesion amount. Accordingly, there is a possibility that desired performance cannot be obtained. To the contrary, even if it is l -j tried to form an excessively thick layer, an effect corresponding to the thickness cannot be obtained. Furthermore, it is difficult to orm a thermally sprayed layer having a thickness of 50 ⁇ m or more.
  • the heat exchanging tube 2 of the aforementioned embodiment is used together with other heat exchanger components, such as hollow headers 4, corrugated fins 3 andsideplates 10 , andassembledinto aprovisionalheat exchanger. Thereafter, flux is applied to this provisional assembly and dried. Then, the provisional assembly is heated in a heating furnace of nitrogen gas atmosphere to simultaneously braze the components to thereby obtain an integrally brazed heat exchanger. In this embodiment, due to the heating at the time of the brazing, Cu and Zn contained in the thermally sprayed layer 20 of the tube 2 are diffused to form a diffusion layer as described above.
  • the heat exchanger tube 2 excellent in heat resistance, pressure resistance and outstanding resistance can be obtained. Accordingly, since the tube 2 is excellent inheat resistance, pressure resistance and durability (corrosion resistance) , in this embodiment, theheatresistance, pressureresistance anddurability of the entire heat exchanger can be improved.
  • the Cu and Zn is thermally sprayed onto the tube core obtained by extrusion, the Cu content in the tube core, i.e., the extruded article, can be controlled as low as possible . For this reason, a raise in strength and temperature of the extrusion material due to the Cu content can be prevented, metal working, such as extrusion molding, can be performed easily, resulting in high manufacturing efficiency.
  • Example Hereafter, Examples according to the present invention and Comparative Examples for verifying effects of the invention will be explained.
  • extrusion material consisting of Al alloy (Cu: 0.02 mass%, Mn: 1 mass%, balance being Al)
  • a multi-bored flat tube having a width of 16 mm, a height of 3 mm and a thickness of 0.5 mm was extruded with an extrusion machine.
  • thermal spraying guns of an arc thermal spraying machine were disposed at upper and lower sides of the outlet of the extrusion machine to thermally spraying Al-Cu-Zn alloy onto the upper and lower sides of the extruded tube to thereby form thermal sprayed layers.
  • the tube with thermally sprayed layers (tube ( tube for heat exchangers ) was cooled in a cooling bath and rolled in a coil shape.
  • the Cu adhesion amount was adjusted to 0.5 g/m 2 and the Zn adhesion amount was adjusted to 16 g/m 2 .
  • a provisionally assembled heat exchanger having the same structure as that of the aforementioned multi-flow type heat exchanger as explained in the aforementioned embodiment was prepared. Then, slurry in which flux was suspended in water was sprayed onto the provisionally assembled heat exchanger and dried.
  • heat exchanger samples and plate material samples were prepared in the same manner as in the aforementioned embodiments .
  • Examples 18 to 23 Heat exchanger samples and plate material samples were prepared by the same processing as in Example 17, except that the Cu adhesion amount and Zn adhesion amount were adjusted as shown in Table 2 during the thermal spraying processing.
  • a thermal spraying layer was formed by thermally spraying Al-Si-Cu-Zn series alloy (Si: 10 mass%, Cu: 4mass%, Zn: 4mass%, balance being Al) .
  • heat exchanger samples and plate material samples were prepared in the same manner as in the aforementioned embodiments .
  • the fin remaining rate after corrosion test is represented by a percentage of the joining rate of the sample tube and fin after the corrosion test to that of the sample tube and fin before the corrosion test .
  • the high temperature strength (tensile strength at 200 °C) of each plate sample of the aforementioned example and comparative example was measured .
  • a standardplate (non-thermally sprayed standard plate) processed in the same manner as mentioned above except that no thermal spraying processing was performed was prepared, and the high temperature strength (tensile strength
  • This invention can be applied to an aluminum heat exchanger for use in car air-conditioning refrigeration cycle and the method for manufacturing the tube.
  • the terminology “present invention” or “invention” may be used as a reference to one or more aspect within the present disclosure.
  • the language present invention or invention should not be improperly interpreted as an identification of criticality, should not be improperly interpreted as applying across all aspects or embodiments (i.e., it should be understood that the present invention has a number of aspects and embodiments), and should not be improperly interpreted as limiting the scope of the application or claims .
  • the terminology “embodiment” can be used to describe any aspect, feature, process or step, any combination thereof, and/or any portion thereof, etc. In some examples, various embodiments may include overlapping features .
  • abbreviated terminology may be employed: “e.g.” which means “for example;” and "NB” which means “note well.”

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

Un faisceau de tubes plats en aluminium est préparé, et une couche superficielle 20 est formée à la surface du faisceau de tubes par pulvérisation d’un alliage contenant du Cu (avec son alliage) et du Zn (avec son alliage), ou d’un alliage de Cu et de Zn. Grâce à cette méthode, on peut fabriquer facilement par extrusion, etc. un tube échangeur de chaleur à forte résistance thermique, résistance à la pression et résistance à la corrosion.
PCT/JP2005/002531 2004-02-12 2005-02-10 Tube pour echangeur de chaleur, méthode de fabrication dudit tube et de l’échangeur WO2005078151A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/589,190 US20070151719A1 (en) 2004-02-12 2005-02-10 Tube for use in heat exchanger, method for manufacturing said tube, and heat exchanger
EP05710377A EP1716266B1 (fr) 2004-02-12 2005-02-10 Tube pour echangeur de chaleur, methode de fabrication dudit tube et de l'echangeur
AT05710377T ATE538225T1 (de) 2004-02-12 2005-02-10 Rohr zur verwendung in einem wärmetauscher, herstellungsverfahren dafür und wärmetauscher

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004035353 2004-02-12
JP2004-35353 2004-02-12
US54553504P 2004-02-19 2004-02-19
US60/545,535 2004-02-19

Publications (1)

Publication Number Publication Date
WO2005078151A1 true WO2005078151A1 (fr) 2005-08-25

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PCT/JP2005/002531 WO2005078151A1 (fr) 2004-02-12 2005-02-10 Tube pour echangeur de chaleur, méthode de fabrication dudit tube et de l’échangeur

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Country Link
US (1) US20070151719A1 (fr)
EP (1) EP1716266B1 (fr)
CN (1) CN100584989C (fr)
AT (1) ATE538225T1 (fr)
WO (1) WO2005078151A1 (fr)

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EP2552613B1 (fr) * 2010-03-31 2014-01-15 Halcor Metal Works S.A. Tube métallique composite sans soudure et procédé de fabrication
US20140041844A1 (en) * 2012-08-09 2014-02-13 Eric Lindell Heat Exchanger Tube, Heat Exchanger Tube Assembly, And Methods Of Making The Same
CN103940153B (zh) * 2014-04-10 2016-08-17 美的集团股份有限公司 平行流换热器、空调机
CN106244968A (zh) * 2016-08-30 2016-12-21 广东通宇通讯股份有限公司 一种天线移相器铝型材腔体表面电弧喷涂方法及铝型材腔体
CN108838476A (zh) * 2018-07-12 2018-11-20 广东省新材料研究所 一种平行流管换热器及其加工方法与应用

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EP1716266B1 (fr) 2011-12-21
EP1716266A4 (fr) 2008-08-13
EP1716266A1 (fr) 2006-11-02
CN100584989C (zh) 2010-01-27
US20070151719A1 (en) 2007-07-05
CN1918317A (zh) 2007-02-21

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