EP2096294A2 - Échangeur thermique à gaz d'échappement - Google Patents

Échangeur thermique à gaz d'échappement Download PDF

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Publication number
EP2096294A2
EP2096294A2 EP09008132A EP09008132A EP2096294A2 EP 2096294 A2 EP2096294 A2 EP 2096294A2 EP 09008132 A EP09008132 A EP 09008132A EP 09008132 A EP09008132 A EP 09008132A EP 2096294 A2 EP2096294 A2 EP 2096294A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
flow
projections
fin
egr gas
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.)
Granted
Application number
EP09008132A
Other languages
German (de)
English (en)
Other versions
EP2096294A3 (fr
EP2096294B1 (fr
Inventor
Takayuki Hayashi
Kazuhiro Shibagaki
Naki Hirayama
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.)
Denso Corp
Original Assignee
Denso 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 Denso Corp filed Critical Denso Corp
Publication of EP2096294A2 publication Critical patent/EP2096294A2/fr
Publication of EP2096294A3 publication Critical patent/EP2096294A3/fr
Application granted granted Critical
Publication of EP2096294B1 publication Critical patent/EP2096294B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • 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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases

Definitions

  • the present invention relates to an exhaust gas heat exchanging device for carrying out a heat exchange between an exhaust gas discharged from an internal combustion engine and a cooling fluid, and can be effectively applied to an EGR gas heat exchanging device (EGR gas cooler) for cooling the exhaust gas for EGR (Exhaust Gas Recirculation).
  • EGR gas cooler EGR gas heat exchanging device
  • Fig. 11 shows a prototype inner fin for an EGR gas cooler manufactured by way of trial and study.
  • the inner fin is disposed in a tube through which the EGR gas passes, to promote a heat exchange between the EGR gas and cooling water.
  • the inner fin is partially cut and bent to provide triangular projections, i.e., wing projections 111c which disturb the flow of the EGR gas passing in the tube to thereby swirl the EGR gas.
  • wing projections 111c which disturb the flow of the EGR gas passing in the tube to thereby swirl the EGR gas.
  • the velocity of the flow of the gas can be increased in the vicinity of the inner fin, so that unburned matter such as particulate matter (soot) or the like that could stick to the inner fin are blown off to thereby prevent the particulate matters from being deposited on the inner fins.
  • the gas passage in the tube 110 is divided into a plurality of passage sections by the inner fins 111, as shown in Fig. 12 .
  • a series of projections 111c are provided on only one side of each of the passages sections divided by the inner fin 111, a large part of the EGR gas introduced in the tube 110 passes along the side (upper side in Fig. 13 ) of each passage section separated by the inner fin 111, that does not have a projection and, hence, has a small flow resistance.
  • the object of the present invention is to enhance the heat transmissibility and to prevent a deposition of particulate matters in an exhaust gas heat exchanging device.
  • an exhaust gas heat exchanging device for carrying out a heat exchange between an exhaust gas discharged from an internal combustion engine and a cooling fluid, comprising an exhaust gas passage (110a) through which the exhaust gas passes; and a fin (111) that is disposed in the exhaust gas passage (110a) and that has a corrugated cross sectional shape as viewed in an exhaust gas flowing direction, wherein a plurality of projections (111c) that project in directions intersecting the exhaust gas flowing direction, are provided on the fin (111), along the flow of exhaust gas; and the projections (111c) are arranged so that the exhaust gas flows in the exhaust gas passage (110a) while meandering in a direction (D1) perpendicular to the longitudinal direction of the exhaust gas passage (110a), due to collision of the exhaust gas with the projections (111c).
  • the tendency that the exhaust gas passes only along the portion of the exhaust gas passage (110a) that has no projection (111c) and that has a small flow resistance does not occur, and the exhaust gas collides with the projections (111c) and flows along a meandering passage. Accordingly, from the viewpoint of the entirety of the exhaust gas passage (110a), it can be considered that the exhaust gas substantially uniformly collides with the projections (111c).
  • the swirl can be reliably generated by disturbing the flow of the exhaust gas
  • the heat transmissibility between the fin (111) and the exhaust gas can be enhanced, and the velocity of the flow of the gas in the vicinity of wall surfaces of the fin (111) and the exhaust gas passage (110a) can be increased to blow off unburned matters such as particulate matters or the like that stick to the wall surfaces of the fin (111) and the exhaust gas passage (110a) so as to prevent particulate matters from being deposited on the wall surfaces of the fin (111) and the exhaust gas passage (110a).
  • an exhaust gas heat exchanging device for carrying out a heat exchange between an exhaust gas discharged from an internal combustion engine and a cooling fluid, comprising an exhaust gas passage (110a) through which the exhaust gas passes; and a fin (111) that is disposed in the exhaust gas passage (110a) and that has a corrugated cross sectional shape as viewed in an exhaust gas flowing direction, wherein first projections (111c) that project in a first direction intersecting the exhaust gas flowing direction and second projections (111c) that project in a direction intersecting the exhaust gas flowing direction and different from the first direction, are provided along the flow of exhaust gas.
  • the swirl can be reliably generated by disturbing the flow of the exhaust gas because the exhaust gas collides with the projections (111c) to thereby meander, in a direction intersecting the longitudinal direction of the exhaust gas passage (110a), in the exhaust gas passage (110a). Therefore, the heat transmissibility between the fin (111) and the exhaust gas can be enhanced and the velocity of the flow of the gas in the vicinity of the fin (111) can be increased to blow off unburned matters such as particulate matters or the like that stick to the fin (111) so as to prevent particulate matters from being deposited on the fin (111).
  • an exhaust gas heat exchanging device for carrying out a heat exchange between an exhaust gas discharged from an internal combustion engine and a cooling fluid, comprising an exhaust gas passage (110a) through which the exhaust gas passes; and a fin (111) that is disposed in the exhaust gas passage (110a) and that has a corrugated cross sectional shape as viewed in an exhaust gas flowing direction, wherein wings (111c) that have surfaces (S) that are inclined with respect to the flow of exhaust gas so that the amount of protrusion thereof from an inner wall of the exhaust gas passage (110a) increases toward the downstream side of the flow of exhaust gas, and that are arranged in a zigzag fashion, along the flow of exhaust gas, are provided on the inner wall; and a plurality of projections (110c) that are inclined with respect to the flow of exhaust gas and that are arranged in a zigzag fashion along the flow of exhaust gas, are provided on the wall surface, of the exhaust gas passage (110a), opposite to the wings (111
  • the swirl can be reliably generated by disturbing the flow of the exhaust gas because the exhaust gas collides with the projections (111c) to thereby meander, in a direction intersecting the longitudinal direction of the exhaust gas passage (110a), in the exhaust gas passage (110a). Therefore, the heat transmissibility between the fin (111) and the exhaust gas can be enhanced, and the velocity of the flow of the gas in the vicinity of the fin (111) can be increased to blow off unburned matters such as particulate matters or the like that stick to the fin (111) so as to prevent particulate matters from being deposited on the fin (111).
  • the fin (111) can be prevented from being clogged, and the heat exchanging efficiency in the exhaust gas heat exchanging device can be enhanced because the heat transmissibility between the fin (111) and the exhaust gas can be enhanced, and particulate matters that adhere to the surface of the fin (111) can be blown off.
  • FIG. 1 is a schematic view of an EGR (Exhaust Gas Recirculation device) using an EGR gas cooling device (hereinafter called "gas cooler") 100 according to the present embodiment.
  • EGR Exhaust Gas Recirculation device
  • gas cooler EGR gas cooling device
  • An exhaust gas recirculation pipe 210 recirculates a part of the exhaust gas discharged from an engine 200 to an intake port of the engine 200.
  • An EGR valve 220 is a known valve that is disposed at some midpoint in the flow of the exhaust gas in the exhaust gas recirculation pipe 210 and that adjusts the amount of the EGR gas in accordance with an operating status of the engine 200.
  • the gas cooler 100 is disposed between an exhaust port of the engine 200 and the EGR valve 220, and carries out a heat exchange between the EGR gas and the cooling water of the engine, to thereby cool the EGR gas.
  • the structure of the gas cooler 100 will be described below.
  • Tubes 110 are flat tubes each defining an exhaust gas passage 110a through which the EGR gas passes.
  • the tubes 110 are formed by welding two plates 110b each formed into a predetermined shape by punching, as shown in Fig. 3 .
  • Inner fins 111 to promote a heat exchange between the EGR gas and the cooling water are disposed in the tubes 110, i.e., in the exhaust gas passages 110a.
  • the inner fins 111 have two kinds of planar portions 111a, 111b that extend in a flowing direction of the EGR gas and that intersect each other, and each have a corrugated cross sectional shape when viewed in the flowing direction of the EGR gas.
  • Projections i.e., wings 111c each having a triangular surface S that is inclined with respect to the flow of EGR gas so that the amount of protrusion thereof from the planar portions 111a of the inner fin 111 increases toward the downstream side of the flow of exhaust gas, are provided on the planar portions 111a of the inner fin 111 that are in contact with the tube 110, i.e., the inner wall of the plate 110b, by partially cutting and bending the planar portions 111a.
  • the wings 111c are provided with first wings 111c projecting in a first direction (a direction from the lower side toward the upper side in Fig. 4 ) perpendicular to the flow direction of the EGR gas and second wings 111c projecting in a second direction (a direction from the upper side toward the lower side in Fig. 4 ) perpendicular to the flow direction of the EGR gas.
  • the triangular surfaces S are arranged in a zigzag fashion, along each of the exhaust gas passages 110a divided by the inner fins 111.
  • two wings 111c whose surfaces S are inclined with respect to the flow of the EGR gas, in different directions, are arranged along the flow of the EGR gas. Also, a plurality of inner fins 111 each having only two wings 111c are arranged along the flow of the EGR gas, in the tube 110, with the placement direction (up-and-down directions) being alternately inverted. Thus, the arrangement of the wings 111c mentioned above can be realized.
  • the inner fins 111 and the tubes 110 are formed by punching a metal (stainless steel in the present embodiment) having a high corrosion resistance.
  • the inner fins 111 and the tubes 110 are integrally connected by welding.
  • a casing 120 accommodates a heat exchanging core 113 composed of a plurality of tubes 110 laminated in a minor diameter direction thereof (up-and-down directions in the drawing) and connected to one another, and is formed into a rectangular pipe defining a cooling water passage 121 around the heat exchanging core 113.
  • the casing 120 is made of a metal (stainless in the present embodiment) having a high corrosion resistance.
  • a tank 122a for distributing and supplying the EGR gas to the tubes 110 is formed at an opening provided at one end in the longitudinal direction (right side in the drawing) of the casing 120. Also, a joint 122 for connecting to an EGR gas piping (not shown) is welded to the opening. On the other hand, a tank 123a for collecting and receiving the EGR gas that has been subject to a heat exchange from the tubes 110 is formed at an opening provided at the other end in the longitudinal direction (left side in the drawing) of the casing 120. Also, a join 123 for connecting to an EGR gas piping (not shown) is welded to the opening.
  • Core plates 124 hold the tubes 110 and separates the cooling water passage 121 from the tanks 122a, 123a.
  • the core plates 124 and the joints 122, 123 are made of a metal (stainless steel in the present embodiment) having a high corrosion resistance.
  • an inlet port 125 through which a cooling water is introduced to the cooling water passage 121 in the major diameter direction of the tube 110, is provided at the inflow side of the EGR gas
  • an outlet port 126 through which the cooling water that has been subjected to a heat exchange is discharged in the minor diameter direction of the tube 110, is provided at the outflow side of the EGR gas.
  • the flowing direction of the EGR gas is identical to that of the cooling water in the casing 120.
  • projections 110d extending in the major diameter direction of the tubes 110 are provided, on the outer walls of the tubes 110, to divide the portion of the cooling water passage 121 adjacent to the inlet port 125 into relatively small spaces to thereby constitute a velocity increasing means to increase the velocity of the flow of the cooling water in the vicinity of the EGR gas inlet port and a positioning means to provide a size of clearance between the tubes 110.
  • projections 110e are provided to provide a size of clearance between the tubes 110 so as to reliably weld the tubes 110 to the inner fins 111.
  • strengthening ribs 120e are provided to strengthen the casing 120.
  • Fig. 6 is a schematic view showing the flow of the EGR gas in the passage 110a separated by the inner fins 111, in the gas cooler 100 according to the present embodiment.
  • the present embodiment has the first wings 111c projecting in the first direction perpendicular to the flowing direction of the EGR gas and the second wings 111c projecting in the second direction perpendicular to the flowing direction of the EGR gas and different from the first direction.
  • the EGR gas collides with the wings 111c and passes through the exhaust gas passage 110a while meandering in the direction D1 perpendicular to a longitudinal direction D0 of the exhaust gas passage 110a.
  • the tendency that the exhaust gas passes only along the portion of the exhaust gas passage 110a that has no projection 111c and that has a small flow resistance does not occur.
  • the EGR gas collides with the projections 111c and flows along the meandering passage. Accordingly, from the viewpoint of the entirety of the exhaust gas passage 110a, it can be considered that the EGR gas substantially uniformly collides with the projections 111c.
  • the swirl can be reliably generated by disturbing the flow of the exhaust gas, the heat transmissibility between the inner fins 111 and the EGR gas can be enhanced and the velocity of the flow of the gas in the vicinity of wall surfaces of the inner fins 111 and the tubes 110 can be increased, to blow off unburned matters such as particulate matters or the like that stick to the wall surfaces of the inner fins 111 and the tubes 110, so as to prevent particulate matters from being deposited on the wall surfaces of the inner fins 111 and the tubes 110.
  • a plurality of inner fins 111 each having only two wings 111c are arranged along the flow of the EGR gas, in the tube 110, with the placement direction (up-and-down directions) being alternately inverted, to thereby realize the arrangement of the wings 111c.
  • the placement direction up-and-down directions
  • the first wings 111c projecting in the first direction perpendicular to the flowing direction of the EGR gas and the second wings 111c projecting in the second direction perpendicular to the flowing direction of the EGR gas and different from the first direction are provided on an offset type inner fin in which the planar portions 111b, i.e., portions of the inner fin 111 that are in substantially parallel with the minor diameter direction of the tube 110 are arranged in a zigzag fashion.
  • the single inner fin 111 can constitute an inner fin. Therefore, the man-hours needed to produce the gas cooler 100 can be reduced.
  • projections 110c are formed, by partially punching the plates 110b toward the inside of the exhaust gas passage 110a, on the plates 110b that separate the exhaust gas passage 110a from the cooling water passage 121 to define the exhaust gas passage 110a.
  • Fig. 9(a) the projections 110c that are inclined with respect to the flow of exhaust gas and that are arranged in a zigzag fashion along the flow of exhaust gas, are provided on the wall surface, of the exhaust gas passage 110a, opposite to the wings 111c. Also, as shown in Fig. 9(b) , the wings 111c and the projections 110c are alternately positioned when viewed in a direction perpendicular to the longitudinal direction of the exhaust gas passage 110a.
  • Fig. 10 is an external two-view drawing of the tube 110 according to the present embodiment.
  • the EGR gas collides with the wings 111c and passes through the exhaust gas passage 110a while meandering in the direction perpendicular to the longitudinal direction of the exhaust gas passage 110a.
  • the tendency that the exhaust gas passes only along the portion of the exhaust gas passage 110a that has no wing 111c and that has a small flow resistance does not occur, and the EGR gas collides with the projections 111c and flows along the meandering passage. Accordingly, from the viewpoint of the entirety of the exhaust gas passage 110a, it can be considered that the EGR gas substantially uniformly collides with the wings 111c.
  • the swirl can be reliably generated by disturbing the flow of the exhaust gas, the heat transmissibility between the inner fin 111 and the EGR gas can be enhanced, and the velocity of the flow of the gas in the vicinity of wall surfaces of the inner fin 111 and the tubes 110 can be increased to blow off unburned matters such as particulate matters or the like that stick to the wall surfaces of the inner fin 111 and the tubes 110 so as to prevent particulate matters from being deposited on the wall surfaces of the inner fin 111 and the tubes 110.
  • an angle 1 which the wing 111c forms with a streamline of the EGR gas is identical to an angle 2 which the projection 110c forms with the streamline of the EGR gas.
  • the present embodiment is not limited thereto.
  • the amount of protrusion of the projection 110c is smaller than that of the wing 111c.
  • the present embodiment is not limited thereto.
  • the wing 111c is substantially in the form of a triangle.
  • the present invention is not limited thereto.
  • Another shape such as a rectangle or a hemisphere (dome) may be adopted.
  • the exhaust gas heat exchanging device according to the present invention is applied to the gas cooler 100.
  • another heat exchanger such as a heat exchanger disposed in a muffler to collect the thermal energy of the exhaust gas may be applied to the gas cooler 100.
  • the wing 111c is formed by partially cutting and bending the inner fin 111.
  • the wing 111c may be formed on a planar member independent of the inner fin 111c, and the planar member on which the wing 111c is formed may be connected to the inner fin 111 by connecting means such as welding.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP09008132.4A 2001-07-25 2002-07-25 Échangeur thermique à gaz d'échappement Expired - Lifetime EP2096294B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001224651 2001-07-25
JP2001350437A JP3912080B2 (ja) 2001-07-25 2001-11-15 排気熱交換装置
EP20020751694 EP1411315B1 (fr) 2001-07-25 2002-07-25 Echangeur thermique de gaz d'echappement

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP20020751694 Division EP1411315B1 (fr) 2001-07-25 2002-07-25 Echangeur thermique de gaz d'echappement
EP20020751694 Division-Into EP1411315B1 (fr) 2001-07-25 2002-07-25 Echangeur thermique de gaz d'echappement

Publications (3)

Publication Number Publication Date
EP2096294A2 true EP2096294A2 (fr) 2009-09-02
EP2096294A3 EP2096294A3 (fr) 2009-11-04
EP2096294B1 EP2096294B1 (fr) 2015-07-08

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP09008132.4A Expired - Lifetime EP2096294B1 (fr) 2001-07-25 2002-07-25 Échangeur thermique à gaz d'échappement
EP20020751694 Expired - Lifetime EP1411315B1 (fr) 2001-07-25 2002-07-25 Echangeur thermique de gaz d'echappement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20020751694 Expired - Lifetime EP1411315B1 (fr) 2001-07-25 2002-07-25 Echangeur thermique de gaz d'echappement

Country Status (3)

Country Link
EP (2) EP2096294B1 (fr)
JP (1) JP3912080B2 (fr)
WO (1) WO2003010481A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US9581107B2 (en) 2011-12-19 2017-02-28 Denso Corporation Exhaust gas heat exchanging device
CN110603420A (zh) * 2017-02-16 2019-12-20 法雷奥热力股份有限公司 用于气体的热交换器，特别用于来自发动机的排气，以及制造所述交换器的方法

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JP6382696B2 (ja) * 2014-11-20 2018-08-29 カルソニックカンセイ株式会社 熱交換器
JP6327271B2 (ja) * 2015-04-17 2018-05-23 株式会社デンソー 熱交換器
US11262142B2 (en) 2016-04-26 2022-03-01 Northrop Grumman Systems Corporation Heat exchangers, weld configurations for heat exchangers and related systems and methods
US11454448B2 (en) 2017-11-27 2022-09-27 Dana Canada Corporation Enhanced heat transfer surface
JP6550177B1 (ja) * 2018-07-20 2019-07-24 カルソニックカンセイ株式会社 熱交換器

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JPS6239183U (fr) * 1985-08-29 1987-03-09
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EP2096294A3 (fr) 2009-11-04
EP1411315B1 (fr) 2015-04-22
EP1411315A4 (fr) 2009-10-28
EP2096294B1 (fr) 2015-07-08
EP1411315A1 (fr) 2004-04-21
WO2003010481A1 (fr) 2003-02-06
JP2003106785A (ja) 2003-04-09
JP3912080B2 (ja) 2007-05-09

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