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WO2017030089A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
WO2017030089A1
WO2017030089A1 PCT/JP2016/073748 JP2016073748W WO2017030089A1 WO 2017030089 A1 WO2017030089 A1 WO 2017030089A1 JP 2016073748 W JP2016073748 W JP 2016073748W WO 2017030089 A1 WO2017030089 A1 WO 2017030089A1
Authority
WO
WIPO (PCT)
Prior art keywords
louver
fin
heat exchanger
cooling water
radiator
Prior art date
Application number
PCT/JP2016/073748
Other languages
English (en)
Japanese (ja)
Inventor
聡 竹中
Original Assignee
いすゞ自動車株式会社
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 いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Publication of WO2017030089A1 publication Critical patent/WO2017030089A1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—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
    • F28F1/30—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 being attachable to the element
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/04—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes comprising shape memory alloys or bimetallic elements

Definitions

  • the present invention relates to a heat exchanger used for a vehicle radiator or the like.
  • a pair of upper and lower or left and right headers are connected by a plurality of tubes, engine cooling water as coolant is circulated through the headers and tubes, and heat radiating fins are attached to the tubes.
  • the cooling water is cooled by the supplied cooling air.
  • a louver is integrally formed on the fin to increase the heat dissipation efficiency of the fin.
  • the louver is inclined so as to protrude from the fin surface, receives the cooling air and guides it, and increases the passage distance of the cooling air in the radiator to improve the heat exchange efficiency of the radiator.
  • the inclination angle of the louver is constant, and the louver always protrudes from the fin surface. For this reason, when the cooling water and therefore the engine cooling requirement is low, the louver rejects the passage of the cooling air and increases the air resistance.
  • an object of the present disclosure is to provide a heat exchanger capable of reducing air resistance.
  • a heat exchanger comprising a tube through which a coolant flows, a fin attached to the tube, and a louver provided integrally with the fin,
  • a heat exchanger is provided in which at least a connection portion between the louver and the fin has a multi-layer structure made of a plurality of metals having different linear expansion coefficients.
  • the whole of the louver and the fin has a multilayer structure.
  • the fin has a U-shaped or U-shaped cut, and an inner portion of the cut forms the louver.
  • FIG. 1 is a partial plan sectional view of a heat exchanger according to an embodiment of the present disclosure.
  • FIG. 2 is a partial plan sectional view showing the details of the II part of FIG.
  • FIG. 3 is a side sectional view showing the details of the II part of FIG.
  • FIG. 4 is a side sectional view showing the louver in the inclined position.
  • FIG. 5 is a side sectional view showing the fin when the louver is in the initial position.
  • FIG. 6 is a side sectional view showing the fin when the louver is in the inclined position.
  • FIG. 1 is a partial plan sectional view of a heat exchanger according to the present embodiment.
  • the heat exchanger of the present embodiment is for a vehicle, and is particularly configured as a vehicle radiator 1 for cooling engine coolant.
  • the front, back, left, right, up and down directions are as illustrated, and these directions correspond to the directions of the vehicle.
  • Reference numeral F indicates the direction of cooling air or traveling air received by the radiator 1 when the vehicle travels.
  • the radiator 1 is installed at a front end portion of the vehicle, particularly at a position behind or immediately behind the front grille. However, the installation position of the radiator 1 is arbitrary.
  • the radiator 1 of the present embodiment is of a so-called down flow type in which engine cooling water that is a coolant is made to flow from top to bottom.
  • the present invention can also be applied to a so-called cross-flow type radiator that allows cooling water to flow substantially horizontally.
  • the radiator 1 includes an upper tank (upper header) and a lower tank (lower header) (not shown), a plurality of tubes 2 (only two are shown), and a plurality of (only one shown) fins attached to the tubes 2. 3 and a plurality of louvers 4 provided integrally with the fin 3.
  • the tube 2 extends in the vertical direction and is connected to the upper tank and the lower tank so as to circulate cooling water from the upper tank to the lower tank. Moreover, the tube 2 has a long cross-sectional shape in the front-rear direction as shown, and a plurality of tubes 2 are provided in the left-right direction. Fins 3 are arranged between two adjacent tubes 2, and left and right end edges of the fins 3 are fixed to the adjacent tubes 2 by brazing or the like.
  • the fins 3 of the present embodiment are formed from corrugated fins having a corrugated shape extending in the vertical direction over the entire length of the tube 2, but the shape, structure, etc. of the fins 3 are not limited to this. Good.
  • plate fins are employed, as is well known, a plurality of tubes are inserted and fixed into tube holes of a plurality of plate fins aligned in the vertical direction.
  • the fins 3 positioned on the left and right sides are arranged between the tube 2 and a side plate (not shown) and are fixed to both.
  • the fin 3 has a plurality of U-shaped notches 5 as shown.
  • the louver 4 is formed by the inner portion of the cuts 5.
  • the U-shape means a shape obtained by removing one side of the four sides of the quadrangle.
  • the shape of the notch 5 is not limited to a U shape, and may be a U shape.
  • the U-shape substantially means a U-shape, and includes an angular U-shape. Therefore, the U-shape includes a U-shape.
  • the notch 5 penetrates the fin 3 in the thickness direction along its shape.
  • the direction of the notch 5 is reversed with respect to the front and rear center of the fin 3, and has a shape that opens to the rear on the front side and a shape that opens to the front on the rear side.
  • the inclination angle of the louver 4 with respect to the fin 3 is variable, and the louver 4 can be bent and deformed from a position near the folding line 6 connecting both ends of the notch 5, and can protrude onto the surface 7 of the fin 3. is there. A position in the vicinity of the folding line 6 becomes a connection portion between the louver 4 and the fin 3.
  • FIGS. 2 and 3 are a partial plan sectional view and a side sectional view showing the details of the II part of FIG. However, the figures are drawn slightly exaggerated for clarity.
  • the entire louver 4 and the fin 3 have a multi-layer structure made of a plurality of metals having different linear expansion coefficients.
  • the louver 4 and the fin 3 have a two-layer structure including an upper layer 11 and a lower layer 12.
  • the louver 4 and the fin 3 can have a structure of three or more layers in accordance with the gist of the present invention described later.
  • the linear expansion coefficient of the metal material forming the upper layer 11 is smaller than the linear expansion coefficient of the metal material forming the lower layer 12.
  • the metal material of the lower layer 12 is an aluminum material that is a normal material of the fin 3. Further, an aluminum material having a higher carbon content than the aluminum material of the lower layer 12 is used as the metal material of the upper layer 11. Thus, the linear expansion coefficient can be easily reduced by increasing the carbon content.
  • the material of the lower layer 12 may or may not contain carbon.
  • a metal material other than aluminum can be used for the upper layer 11 and the lower layer 12.
  • the louvered fin 3 for example, the aluminum plate forming the upper layer 11 and the aluminum plate forming the lower layer 12 are bonded together and integrated, and the louver 4 is formed by applying the notch 5 by pressing or the like. Thereafter, the plywood material is bent into a corrugated shape to complete the louvered fin 3.
  • the cut 5 includes any mode as long as it cuts the plywood along its shape.
  • the cut 5 may simply cut the plywood, or if necessary, a slit having a certain width may be drilled along the shape of the cut 5.
  • FIG. 3 shows a normal state, that is, a state where the cooling water is not circulated in the tube 2 or the temperature of the cooling water circulated in the tube 2 is lower than a preset deformation start temperature. .
  • the louver 4 is disposed so as to be flush with the fins 3 as shown in the figure, and maintains the initial shape when the fins are completed.
  • the position of the louver 4 shown in FIG. In the initial position, the louver 4 is not inclined with respect to the fin 3, and its inclination angle is zero.
  • the louver 4 When the cooling water is circulated in the tube 2 and the temperature of the cooling water becomes equal to or higher than the deformation start temperature, the louver 4 is inclined with respect to the fin 3 by the heat received from the cooling water as shown in FIG. It is bent or curved from a position near the folding line 6 so as to protrude onto the surface 7.
  • An inclination angle of the louver 4 with respect to the fin 3 is denoted by ⁇ .
  • the louver 4 is curved and deformed to the upper layer 11 side. Since the portions of the fins 3 other than the louver 4 are firmly fixed to the tube 2, the deformation thereof is substantially prevented. Therefore, the louver 4 is temperature-sensitively deformed as shown in the figure with respect to the other fins 3.
  • the position of the louver 4 shown in FIG. The front louver 4 is inclined so as to open forward, and the rear louver 4 is inclined so as to open rearward, with the front and rear centers of the fins 3 as the boundary.
  • radiator 1 when one or more other heat exchangers (intercooler, oil cooler, etc.) are arranged in front of the radiator 1 in a front view, if all the louvers 4 are in the initial position, the radiator 1 Therefore, the back pressure with respect to the other heat exchanger is reduced, and the passing air volume of the other heat exchanger can be increased. Therefore, the heat exchange efficiency of another heat exchanger can be improved.
  • other heat exchangers internal cooler, oil cooler, etc.
  • the louver 4 when the cooling water and therefore the engine cooling requirement is high, specifically, when the cooling water temperature is equal to or higher than the deformation start temperature, the louver 4 is positioned in the inclined position as usual to cool the cooling water with high efficiency. it can.
  • the louver 4 when the cooling water and therefore the engine cooling requirement is low, specifically, when the cooling water temperature is lower than the deformation start temperature, the louver 4 is positioned at the initial position to reduce the cooling efficiency of the cooling water, while the radiator 1
  • the air resistance of the vehicle can be reduced by reducing the passage resistance of the traveling wind F inside. Thereby, it is possible to improve the fuel consumption of the engine.
  • the deformation start temperature is the cooling water temperature at which the engine cooling requirement is high, for example, the lowest cooling water temperature at which overheating during high-load operation of the engine can be suppressed or prevented. It is preferable to set to.
  • the cooling water circuit including the radiator 1 is provided with a thermostat, and when the cooling water reaches a predetermined valve opening temperature, the thermostat is opened to allow the cooling water to flow through the radiator 1.
  • the deformation start temperature is preferably set to a temperature higher than the valve opening temperature of the thermostat.
  • the entire louver 4 and fin 3 have a multi-layer structure, in particular, a two-layer structure including an upper layer 11 and a lower layer 12, so that the louver 4 and the fin 3 can be integrally formed of the above-described plywood material and have a louver.
  • the fin 3 can be easily manufactured. Further, since the fin 3 is provided with a U-shaped or U-shaped cut 5 and the inner portion of the cut 5 is used as the louver 4, the louver 4 can be formed only by processing the cut 5. Fabrication can be performed easily.
  • Patent Document 1 discloses a heat exchanger in which at least a louver portion of a fin is formed of a shape memory alloy.
  • the shape memory alloy is significantly more expensive than the multilayer metal plate (aluminum plywood) of the present embodiment in view of its material and manufacturing process. Therefore, the present embodiment is advantageous in that the cost can be significantly reduced as compared with Patent Document 1.
  • the louver 4 and the fin 3 do not necessarily have a multilayer structure as a whole, and at least the connection portion between the louver 4 and the fin 3 may have a multilayer structure. This is because the inclination angle of the louver 4 with respect to the fin 3 can be made variable according to the cooling water temperature. Accordingly, a modification in which only the connection portion has a multilayer structure is naturally possible. However, considering the time and effort of manufacture, it is more advantageous to make the whole into a multilayer structure.
  • the inclination angle of the louver 4 at the initial position is set to zero, but it is not always necessary to do so, and the inclination angle may be slightly larger than zero.
  • the louver 4 is slightly bent with respect to the fin 3 after the cuts 5 are processed at the time of manufacturing the fin.
  • the notch 5 does not necessarily have a U-shape or U-shape, and may be an I-shape as found in a general radiator, for example.
  • the present invention can be applied to other than a radiator, for example, an intercooler, an oil cooler, and the like. Therefore, the coolant may be other than engine coolant, such as oil.
  • the heat exchanger according to the present disclosure has an effect that an excellent effect that air resistance can be reduced can be provided, and while the heat exchanger ensures high heat exchange efficiency, This is useful in that the fuel efficiency of the mounted vehicle can be improved.

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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

Un mode de réalisation de la présente invention concerne un échangeur de chaleur pourvu d'un tube 2 à travers lequel un liquide de refroidissement s'écoule, une ailette 3 fixée au tube, et un déflecteur 4 disposé de façon intégrée avec l'ailette, où l'échangeur de chaleur est caractérisé en ce qu'au moins une section reliant le déflecteur et l'ailette est configurée sous la forme d'une structure multicouche d'une pluralité de métaux 11, 12 ayant différents coefficients de dilatation linéaire.
PCT/JP2016/073748 2015-08-20 2016-08-12 Échangeur de chaleur WO2017030089A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-163194 2015-08-20
JP2015163194A JP2017040446A (ja) 2015-08-20 2015-08-20 熱交換器

Publications (1)

Publication Number Publication Date
WO2017030089A1 true WO2017030089A1 (fr) 2017-02-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/073748 WO2017030089A1 (fr) 2015-08-20 2016-08-12 Échangeur de chaleur

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JP (1) JP2017040446A (fr)
WO (1) WO2017030089A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3199902A1 (fr) * 2016-01-27 2017-08-02 Honeywell International Inc. Ailette bimétallique caractéristique de turbulence par ajustement thermique
FR3064735A1 (fr) * 2017-04-03 2018-10-05 Valeo Systemes Thermiques Dispositif d’echange thermique pour vehicule automobile

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101937037B1 (ko) * 2017-07-04 2019-01-09 서울시립대학교 산학협력단 루버핀, 이를 포함하는 열교환기, 이를 제조하기 위한 장치, 이를 제조하기 위한 방법 및 이 방법을 수행하기 위한 프로그램이 기록된 컴퓨터 판독 가능한 기록매체

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120375U (ja) * 1983-01-26 1984-08-14 日産自動車株式会社 熱交換器
JP2009180406A (ja) * 2008-01-30 2009-08-13 Calsonic Kansei Corp 超臨界冷凍サイクル
JP2009293441A (ja) * 2008-06-03 2009-12-17 Toyota Motor Corp 内燃機関の排気ガス再循環装置
US20110030337A1 (en) * 2008-04-17 2011-02-10 Snecma Wall cooling device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003062798A (ja) * 2001-08-21 2003-03-05 Advantest Corp アクチュエータ及びスイッチ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120375U (ja) * 1983-01-26 1984-08-14 日産自動車株式会社 熱交換器
JP2009180406A (ja) * 2008-01-30 2009-08-13 Calsonic Kansei Corp 超臨界冷凍サイクル
US20110030337A1 (en) * 2008-04-17 2011-02-10 Snecma Wall cooling device
JP2009293441A (ja) * 2008-06-03 2009-12-17 Toyota Motor Corp 内燃機関の排気ガス再循環装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3199902A1 (fr) * 2016-01-27 2017-08-02 Honeywell International Inc. Ailette bimétallique caractéristique de turbulence par ajustement thermique
US10113818B2 (en) 2016-01-27 2018-10-30 Garrett Transportation I Inc. Bimetallic fin with themo-adjusting turbulation feature
FR3064735A1 (fr) * 2017-04-03 2018-10-05 Valeo Systemes Thermiques Dispositif d’echange thermique pour vehicule automobile
WO2018185410A1 (fr) * 2017-04-03 2018-10-11 Valeo Systemes Thermiques Dispositif d'échange thermique pour véhicule automobile

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