US20160363380A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- US20160363380A1 US20160363380A1 US15/182,790 US201615182790A US2016363380A1 US 20160363380 A1 US20160363380 A1 US 20160363380A1 US 201615182790 A US201615182790 A US 201615182790A US 2016363380 A1 US2016363380 A1 US 2016363380A1
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- Prior art keywords
- area
- heat exchanger
- housing
- tube
- tubes
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
- F02B29/0462—Liquid cooled heat exchangers
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- 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
- F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
-
- 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
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- 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
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- 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
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- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- 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
- F28F1/105—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being corrugated elements extending around the tubular elements
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- 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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
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- 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
- F28D2021/0026—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for combustion engines, e.g. for gas turbines or for Stirling engines
-
- 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
- F28D2021/0082—Charged air coolers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a heat exchanger, in particular an exhaust gas heat exchanger or a charge air cooler, in particular for a motor vehicle.
- Exhaust gas heat exchangers are used in motor vehicles, for example, in so-called exhaust gas recirculation systems.
- the exhaust gas is cooled and, inter alia, there is a reduction of the pollutants arising during fuel combustion, as well as a lower fuel consumption.
- DE 199 07 163 C2 discloses an exhaust gas heat exchanger with tubes, held at both ends in tube sheets, for conducting a gas and with a housing, connected to the tube sheets and surrounding the tubes, for conducting a liquid coolant.
- the tube sheets, the tubes, and the housing are made of austenitic heat-resistant steel sheets.
- the tubes are welded into the tube sheets stamped out of a metal sheet and the housing is welded to the tube sheets.
- DE 10 2010 025 030 B4 discloses a heat exchanger for an internal combustion engine, which is to be used, for example, for cooling an exhaust gas stream intended for exhaust gas recirculation.
- the heat exchanger here has a base tube formed by two interconnected deep-drawn pots. The two ends of the base tube each have a tube sheet, whereby the individual tube sheets are a single-part component of the deep-drawn pots. A tube bundle extends between the two tube sheets within the base tube.
- the type of insertion and/or pressing in of the deep-drawn pots serving as tube sheets, actions which are often taken during the fabrication of the heat exchanger, in the deep-drawn direction has the result that the complete length of the base tube or of the housing of the heat exchanger cannot be utilized as a heat exchanging region.
- the exhaust gas-carrying tubes disposed in the base tube or in the housing of the heat exchanger are in each case shorter by the deep-drawing height than the base tube or the housing of the heat exchanger.
- An exemplary embodiment of the invention relates to a heat exchanger, in particular to an exhaust gas heat exchanger or a charge air cooler for a motor vehicle, with a housing with a first housing side and with a second housing side, opposite to the first housing side, and with an inner housing wall and with an outer housing wall, whereby tubes, through which a gas can flow, are disposed in the housing, said tubes each of which has a first tube end and a second tube end, opposite to the first tube end, and with a first tube sheet disposed in the area of the first housing side, whereby the first tube sheet has a number of first through-openings, through which the first tube ends extend, and with a second tube sheet disposed in the area of the second housing side, whereby the second tube sheet has a number of second through-openings through which the second tube ends extend, whereby the first tube sheet forms a first plane and the second tube sheet forms a second plane, whereby the first tube sheet has a first circumferential edge raised at a first angle a from the first plane
- ‘extend’ can mean that the tube coming from one side at least engages in the through-opening and optionally emerges again out of the through-opening on the opposite side.
- the first edge can have a first contact side and a second contact side opposite to the first contact side, whereby the first contact side in the area of the first housing side is connected to the inner housing wall or the second contact side in the area of the first housing side is connected to the outer housing wall.
- the heat exchanger at the second edge can have a first contact area and a second contact area opposite to the first contact area, whereby the first contact area in the area of the second housing side is connected to the inner housing wall or the second contact area in the area of the second housing side is connected to the outer housing wall.
- the tube sheets advantageously can be connected to the housing in this way, without the first edge or the second edge reducing the space available for the heat transfer.
- An embodiment of the heat exchanger provides that the tubes are arranged substantially lying parallel next to one another in the longitudinal direction such that gaps through which a coolant can flow are formed between the tubes.
- the relation of the exhaust gas amount and the heat transfer performance can be varied by varying the gap depth.
- the first contact side and/or the second contact side and/or the first contact area and/or the second contact area can be connected to the inner housing wall and/or the outer housing wall with solder. This facilitates the production of the heat exchanger in a bundling and soldering process.
- the first contact side and/or the second contact side and/or the first contact area and/or the second contact area can be connected to the inner housing wall and/or the outer housing wall substantially by material bonding.
- the first tube ends in the area of the first through-openings can be connected to the first tube sheet by solder and the second tube ends in the area of the second through-openings are connected to the second tube sheet by solder.
- the production of the heat exchanger by a bundling and soldering process is also simplified as a result.
- An embodiment of the heat exchanger provides that the first through-openings and/or the second through-openings each have passages through which the first tube ends and/or the second tube ends extend.
- the fabrication is considerably simplified as a result and a higher stability of the heat exchanger in the area of the first housing side and the second housing side is achieved.
- the housing can have an inlet opening for a coolant supply and/or an outlet opening for coolant removal.
- the tubes are formed as flat tubes, and/or turbulence inserts and/or spacers and/or corrugated fins are arranged between the tubes, and/or the tubes have a substantially smooth surface and/or a substantially circular cross section.
- a bypass channel can be located in the area of the housing. This permits control of the exhaust gas amount that is conveyed through the heat transfer region of the heat exchanger.
- An embodiment of the heat exchanger provides that the first tube sheet and the second tube sheet are produced in a deep-drawing process. This is an especially cost-efficient production method for the tube sheets.
- FIG. 1 shows a schematic side view of a heat exchanger of the invention
- FIG. 2 shows a perspective view of the heat exchanger according to FIG. 1 ,
- FIG. 3 shows a schematic detailed view of a part of the heat exchanger according to FIG. 1 ;
- FIG. 4 shows a schematic detailed view of a further part of the heat exchanger according to FIG. 1 ;
- FIG. 5 shows a schematic side view of a further exemplary embodiment of a heat exchanger
- FIG. 6 shows a perspective view of the heat exchanger according to FIG. 5 ;
- FIG. 7 shows a schematic detailed view of a part of the heat exchanger according to FIG. 5 ;
- FIG. 8 shows a schematic detailed view of a further part of the heat exchanger according to FIG. 5 .
- FIGS. 1 and 2 show an exemplary embodiment of heat exchanger 1 of the invention.
- Heat exchanger 1 is disposed by way of example as an exhaust gas heat exchanger in an exhaust gas recirculation system of a motor vehicle.
- heat exchanger 1 can also be disposed as a charge air cooler in an exhaust gas recirculation system of a motor vehicle.
- heat exchanger 1 can also be disposed elsewhere.
- Heat exchanger 1 has a housing 2 .
- Housing 2 is made substantially as a type of tubular shell body, for example, of sheet steel and has an inner housing wall 5 and an outer housing wall 6 .
- Housing 2 at its end has a first housing side 3 and an end-side, second housing side 4 opposite to first housing side 3 .
- housing 2 On the circumferential side, housing 2 has an inlet opening 21 and an outlet opening (not shown).
- a housing interior substantially delimited by inner housing wall 5 , is fluidically connected to a coolant circuit via inlet opening 21 and the outlet opening. In this case, a substantially liquid coolant flows into the housing interior through inlet opening 21 and out of the housing interior through the outlet opening.
- tubes 7 are arranged parallel to one another and parallel to the longitudinal direction of housing 2 .
- Tubes 7 have a first tube end 8 , which is disposed in the area of first housing side 3 , and a second tube end 9 , which is disposed in the area of second housing side 4 .
- Tubes 7 are made, for example, as flat tubes. In alternative embodiments, tubes 7 may also have a substantially circular cross section.
- first tube sheet 10 is arranged substantially perpendicular to the longitudinal axis of housing 2 .
- First tube sheet 10 has a number of first through-openings 11 , which are arranged vertically to the longitudinal direction of housing 2 and are penetrated by first tube ends 8 .
- a second tube sheet 12 is arranged substantially perpendicular to the longitudinal axis of housing 2 .
- Second tube sheet 12 has a number of second through-openings 13 , which are arranged vertically to the longitudinal direction of housing 2 and are penetrated by second tube ends 9 .
- First through-openings 11 and second through-openings 13 can have passages.
- First tube ends 8 can be soldered to first tube sheet 10 in the area of first through-openings 11 .
- Second tube ends 9 can be soldered to second tube sheet 12 in the area of second through-openings 13 .
- an exhaust gas stream discharged by the internal combustion engine of the motor vehicle, flows through tubes 7 .
- the exhaust gas stream flows into tubes 7 , for example, in the area of first tube ends 8 and flows out of tubes 7 in the area of second tube ends 9 and is then supplied to an intake tract of the internal combustion engine.
- Tubes 7 are arranged spaced apart from one another such that gaps 20 are arranged between them. Coolant flows through gaps 20 . Coolant flows around tubes 7 . In this case, heat is transferred from the exhaust gas to the coolant and the exhaust gas is cooled at least partially by the coolant.
- heat exchanger 1 is formed as a charge air cooler
- charge air flows through tubes 7 and is cooled by the coolant.
- Tubes 7 have a surface on which in the exemplary embodiment shown in FIGS. 1 and 2 spacers 22 are arranged.
- turbulence inserts and/or corrugated fins as well can be arranged on the surface of tubes 7 and/or between tubes 7 in the area of gaps 20 .
- An exemplary embodiment of heat exchanger 1 which has tubes 107 with a smooth surface 123 , is shown in FIGS. 5 and 6 .
- First tube sheet 10 in the exemplary embodiment shown in FIGS. 1 and 2 in the area of first housing side 3 forms a first plane arranged perpendicular to the longitudinal direction of housing 2 .
- First tube sheet 10 has a circumferential first edge 14 raised at a first angle a from the first plane.
- First edge 14 has a first contact side 16 and a second contact side 17 opposite to first contact side 16 .
- First contact side 16 is connected to inner housing wall 5 in the area of first housing side 3 .
- first contact side 16 and inner housing wall 5 can be connected in particular with solder and/or by material bonding.
- first contact side 16 and inner housing wall 5 as well as tubes 7 and first tube sheet 10 are shown spaced apart from one another.
- Second tube sheet 12 in the exemplary embodiment shown in FIGS. 1 and 2 in the area of second housing side 4 forms a second plane arranged perpendicular to the longitudinal direction of housing 2 .
- Second tube sheet 12 has a circumferential second edge 15 raised at a second angle 13 from the second plane.
- Second edge 15 has a first contact area 18 and a second contact area 19 opposite to first contact area 18 .
- First contact area 18 is connected to inner housing wall 5 in the area of second housing side 4 .
- first contact area 18 and inner housing wall 5 can be connected in particular with solder and/or by material bonding.
- first contact area 18 and inner housing wall 5 as well as tubes 7 and second tube sheet 12 are shown spaced apart from one another.
- FIGS. 5 and 6 show a further exemplary embodiment of a heat exchanger 101 of the invention.
- Heat exchanger 101 is disposed by way of example as an exhaust gas heat exchanger in an exhaust gas recirculation system of a motor vehicle.
- heat exchanger 101 can also be disposed as a charge air cooler within an exhaust gas recirculation system of a motor vehicle.
- heat exchanger 101 can also be disposed elsewhere.
- Heat exchanger 101 has a housing 102 .
- Housing 102 is made substantially as a type of tubular shell body, for example, of sheet steel and has an inner housing wall 105 and an outer housing wall 106 .
- Housing 102 at its end has a first housing side 103 and an end-side, second housing side 104 opposite to first housing side 103 .
- housing 102 On the circumferential side, housing 102 has an inlet opening 121 and an outlet opening (not shown).
- a housing interior, substantially delimited by inner housing wall 105 is fluidically connected to a coolant circuit via inlet opening 121 and the outlet opening. In this case, a substantially liquid coolant flows into the housing interior through inlet opening 121 and out of the housing interior through the outlet opening.
- Tubes 107 are arranged parallel to one another and parallel to the longitudinal direction of housing 102 .
- Tubes 107 have a first tube end 108 , which is disposed in the area of first housing side 103 , and a second tube end 109 , which is disposed in the area of second housing side 104 .
- Tubes 107 are made, for example, as flat tubes. In alternative embodiments, the tubes may also have a substantially circular cross section.
- first tube sheet 110 is arranged substantially perpendicular to the longitudinal axis of housing 102 .
- First tube sheet 110 has a number of first through-openings 111 , which are arranged vertically to the longitudinal direction of housing 102 and are penetrated by first tube ends 108 .
- second tube sheet 112 is arranged substantially perpendicular to the longitudinal axis of housing 102 .
- Second tube sheet 112 has a number of second through-openings 113 , which are arranged vertically to the longitudinal direction of housing 102 and are penetrated by second tube ends 109 .
- First through-openings 111 and second through-openings 113 can have passages.
- First tube ends 108 can be soldered to first tube sheet 110 in the area of first through-openings 111 .
- Second tube ends 109 can be soldered to second tube sheet 112 in the area of second through-openings 113 .
- an exhaust gas stream discharged by the internal combustion engine of the motor vehicle, flows through tubes 107 .
- the exhaust gas stream flows into tubes 107 , for example, in the area of first tube ends 108 and flows out of tubes 107 in the area of second tube ends 109 and is then supplied to an intake tract of the internal combustion engine.
- Tubes 107 are arranged spaced apart from one another such that gaps 120 are arranged between them. Coolant flows through gaps 120 . Coolant flows around tubes 107 . In this case, heat is transferred from the exhaust gas to the coolant and the exhaust gas is cooled at least partially by the coolant.
- heat exchanger 101 is formed as a charge air cooler
- charge air flows through tubes 107 and is cooled by the coolant.
- Tubes 107 have a smooth surface 123 .
- spacers may be arranged on the surface of tubes 107 and/or turbulence inserts and/or corrugated fins may be arranged on the surface of tubes 107 and/or between tubes 107 in the area of gaps 120 .
- First tube sheet 110 in the exemplary embodiment shown in FIGS. 5 and 6 in the area of first housing side 103 forms a first plane arranged perpendicular to the longitudinal direction of housing 102 .
- First tube sheet 110 has a circumferential first edge 114 raised at a first angle a from the first plane.
- first edge 114 of the exemplary embodiment, shown in FIGS. 5 and 6 , of heat exchanger 101 is shown in FIG. 7 .
- First edge 114 has a first contact side 116 and a second contact side 117 opposite to first contact side 116 .
- Second contact side 117 is connected to outer housing wall 106 in the area of first housing side 103 .
- second contact side 117 and outer housing wall 106 can be connected in particular with solder and/or by material bonding.
- second contact side 117 and outer housing wall 106 as well as tubes 107 and second tube sheet 112 are shown spaced apart from one another.
- Second tube sheet 112 in the exemplary embodiment shown in FIGS. 5 and 6 in the area of second housing side 104 forms a second plane arranged perpendicular to the longitudinal direction of housing 102 .
- Second tube sheet 112 has a circumferential second edge 115 raised at a second angle 13 from the second plane.
- Second edge 115 has a first contact area 118 and a second contact area 119 opposite to first contact area 118 .
- Second contact area 119 is connected to outer housing wall 106 in the area of second housing side 104 .
- second contact area 119 and outer housing wall 106 can be connected in particular with solder and/or by material bonding.
- second contact side 119 and outer housing wall 106 as well as tubes 107 and second tube sheet 112 are shown spaced apart from one another.
- FIGS. 1, 2, 5, and 6 moreover, have a circumferential flange 24 or a circumferential flange 124 .
- Tube sheets 10 , 12 , 110 , and 112 shown in FIGS. 1, 2, 5, and 6 , can be fabricated in particular as deep-drawn pots.
Abstract
A heat exchanger for a motor vehicle, with a housing with a first housing side and with a second housing side opposite to the first housing side, and with an inner housing wall and with an outer housing wall. The tubes, through which a gas can flow, are disposed in the housing. The tubes each of which has a first tube end and a second tube end, opposite to the first tube end, and with a first tube sheet disposed in the area of the first housing side. A first tube sheet has a number of first through-openings, through which the first tube ends extend, and a second tube sheet disposed in the area of the second housing side that has a number of second through-openings through which the second tube ends extend. The first tube sheet forms a first plane and the second tube sheet forms a second plane.
Description
- This nonprovisional application claims priority under 35 U.S.C. §119(a) to German Patent Application No. 10 2015 210 942.9, which was filed in Germany on Jun. 15, 2015, and which is herein incorporated by reference.
- Field of the Invention
- The present invention relates to a heat exchanger, in particular an exhaust gas heat exchanger or a charge air cooler, in particular for a motor vehicle.
- Description of the Background Art
- Exhaust gas heat exchangers are used in motor vehicles, for example, in so-called exhaust gas recirculation systems. In this case, the exhaust gas is cooled and, inter alia, there is a reduction of the pollutants arising during fuel combustion, as well as a lower fuel consumption.
- DE 199 07 163 C2 discloses an exhaust gas heat exchanger with tubes, held at both ends in tube sheets, for conducting a gas and with a housing, connected to the tube sheets and surrounding the tubes, for conducting a liquid coolant. In this case, the tube sheets, the tubes, and the housing are made of austenitic heat-resistant steel sheets. The tubes are welded into the tube sheets stamped out of a metal sheet and the housing is welded to the tube sheets.
- DE 10 2010 025 030 B4 discloses a heat exchanger for an internal combustion engine, which is to be used, for example, for cooling an exhaust gas stream intended for exhaust gas recirculation. The heat exchanger here has a base tube formed by two interconnected deep-drawn pots. The two ends of the base tube each have a tube sheet, whereby the individual tube sheets are a single-part component of the deep-drawn pots. A tube bundle extends between the two tube sheets within the base tube.
- In particular, the type of insertion and/or pressing in of the deep-drawn pots serving as tube sheets, actions which are often taken during the fabrication of the heat exchanger, in the deep-drawn direction has the result that the complete length of the base tube or of the housing of the heat exchanger cannot be utilized as a heat exchanging region. The exhaust gas-carrying tubes disposed in the base tube or in the housing of the heat exchanger are in each case shorter by the deep-drawing height than the base tube or the housing of the heat exchanger.
- It is the object of the invention to provide a heat exchanger, which is improved relative to the prior art and makes available a higher heat transfer rate.
- An exemplary embodiment of the invention relates to a heat exchanger, in particular to an exhaust gas heat exchanger or a charge air cooler for a motor vehicle, with a housing with a first housing side and with a second housing side, opposite to the first housing side, and with an inner housing wall and with an outer housing wall, whereby tubes, through which a gas can flow, are disposed in the housing, said tubes each of which has a first tube end and a second tube end, opposite to the first tube end, and with a first tube sheet disposed in the area of the first housing side, whereby the first tube sheet has a number of first through-openings, through which the first tube ends extend, and with a second tube sheet disposed in the area of the second housing side, whereby the second tube sheet has a number of second through-openings through which the second tube ends extend, whereby the first tube sheet forms a first plane and the second tube sheet forms a second plane, whereby the first tube sheet has a first circumferential edge raised at a first angle a from the first plane and the second tube sheet has a circumferential second edge raised at a
second angle 13 from the second plane, whereby the first edge in the area of the first housing side is connected to the inner housing wall or in the area of the first housing side to the outer housing wall and/or the second edge in the area of the second housing side is connected to the inner housing wall or in the area of the second housing side to the outer housing wall. This design form in an advantageous way allows an effective heat transfer over the entire length of the housing between the exhaust gas stream carried in the tubes and a cooling medium flowing around the tubes within the housing. In this case, ‘extend’ can mean that the tube coming from one side at least engages in the through-opening and optionally emerges again out of the through-opening on the opposite side. - In an exemplary embodiment of the heat exchanger, the first edge can have a first contact side and a second contact side opposite to the first contact side, whereby the first contact side in the area of the first housing side is connected to the inner housing wall or the second contact side in the area of the first housing side is connected to the outer housing wall.
- The heat exchanger at the second edge can have a first contact area and a second contact area opposite to the first contact area, whereby the first contact area in the area of the second housing side is connected to the inner housing wall or the second contact area in the area of the second housing side is connected to the outer housing wall. The tube sheets advantageously can be connected to the housing in this way, without the first edge or the second edge reducing the space available for the heat transfer.
- An embodiment of the heat exchanger provides that the tubes are arranged substantially lying parallel next to one another in the longitudinal direction such that gaps through which a coolant can flow are formed between the tubes. The relation of the exhaust gas amount and the heat transfer performance can be varied by varying the gap depth.
- In an exemplary embodiment of the heat exchanger, the first contact side and/or the second contact side and/or the first contact area and/or the second contact area can be connected to the inner housing wall and/or the outer housing wall with solder. This facilitates the production of the heat exchanger in a bundling and soldering process.
- In an exemplary embodiment of the heat exchanger, the first contact side and/or the second contact side and/or the first contact area and/or the second contact area can be connected to the inner housing wall and/or the outer housing wall substantially by material bonding. As a result, an especially strong connection between the tube sheets and the housing is possible, which facilitates the application of pressure during the operation of the heat exchanger.
- In an embodiment of the heat exchanger, the first tube ends in the area of the first through-openings can be connected to the first tube sheet by solder and the second tube ends in the area of the second through-openings are connected to the second tube sheet by solder. The production of the heat exchanger by a bundling and soldering process is also simplified as a result.
- An embodiment of the heat exchanger provides that the first through-openings and/or the second through-openings each have passages through which the first tube ends and/or the second tube ends extend. The fabrication is considerably simplified as a result and a higher stability of the heat exchanger in the area of the first housing side and the second housing side is achieved.
- In an embodiment of the heat exchanger, the housing can have an inlet opening for a coolant supply and/or an outlet opening for coolant removal.
- In further exemplary embodiments of the heat exchanger, the tubes are formed as flat tubes, and/or turbulence inserts and/or spacers and/or corrugated fins are arranged between the tubes, and/or the tubes have a substantially smooth surface and/or a substantially circular cross section.
- In an exemplary embodiment of the heat exchanger, a bypass channel can be located in the area of the housing. This permits control of the exhaust gas amount that is conveyed through the heat transfer region of the heat exchanger.
- An embodiment of the heat exchanger provides that the first tube sheet and the second tube sheet are produced in a deep-drawing process. This is an especially cost-efficient production method for the tube sheets.
- Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes, combinations and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
- The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
-
FIG. 1 shows a schematic side view of a heat exchanger of the invention; -
FIG. 2 shows a perspective view of the heat exchanger according toFIG. 1 , -
FIG. 3 shows a schematic detailed view of a part of the heat exchanger according toFIG. 1 ; -
FIG. 4 shows a schematic detailed view of a further part of the heat exchanger according toFIG. 1 ; -
FIG. 5 shows a schematic side view of a further exemplary embodiment of a heat exchanger; -
FIG. 6 shows a perspective view of the heat exchanger according toFIG. 5 ; -
FIG. 7 shows a schematic detailed view of a part of the heat exchanger according toFIG. 5 ; and -
FIG. 8 shows a schematic detailed view of a further part of the heat exchanger according toFIG. 5 . -
FIGS. 1 and 2 show an exemplary embodiment ofheat exchanger 1 of the invention.Heat exchanger 1 is disposed by way of example as an exhaust gas heat exchanger in an exhaust gas recirculation system of a motor vehicle. Alternatively,heat exchanger 1 can also be disposed as a charge air cooler in an exhaust gas recirculation system of a motor vehicle. Moreover,heat exchanger 1 can also be disposed elsewhere. -
Heat exchanger 1 has ahousing 2.Housing 2 is made substantially as a type of tubular shell body, for example, of sheet steel and has an inner housing wall 5 and anouter housing wall 6. -
Housing 2 at its end has a first housing side 3 and an end-side,second housing side 4 opposite to first housing side 3. On the circumferential side,housing 2 has an inlet opening 21 and an outlet opening (not shown). A housing interior, substantially delimited by inner housing wall 5, is fluidically connected to a coolant circuit via inlet opening 21 and the outlet opening. In this case, a substantially liquid coolant flows into the housing interior through inlet opening 21 and out of the housing interior through the outlet opening. - In the area of the housing interior, a number of
tubes 7 are arranged parallel to one another and parallel to the longitudinal direction ofhousing 2. Tubes 7 have afirst tube end 8, which is disposed in the area of first housing side 3, and asecond tube end 9, which is disposed in the area ofsecond housing side 4.Tubes 7 are made, for example, as flat tubes. In alternative embodiments,tubes 7 may also have a substantially circular cross section. - In the area of first housing side 3, a
first tube sheet 10 is arranged substantially perpendicular to the longitudinal axis ofhousing 2.First tube sheet 10 has a number of first through-openings 11, which are arranged vertically to the longitudinal direction ofhousing 2 and are penetrated by first tube ends 8. - In the area of
second housing side 4, a second tube sheet 12 is arranged substantially perpendicular to the longitudinal axis ofhousing 2. Second tube sheet 12 has a number of second through-openings 13, which are arranged vertically to the longitudinal direction ofhousing 2 and are penetrated by second tube ends 9. - First through-
openings 11 and second through-openings 13 can have passages. First tube ends 8 can be soldered tofirst tube sheet 10 in the area of first through-openings 11. Second tube ends 9 can be soldered to second tube sheet 12 in the area of second through-openings 13. - For example, an exhaust gas stream, discharged by the internal combustion engine of the motor vehicle, flows through
tubes 7. The exhaust gas stream flows intotubes 7, for example, in the area of first tube ends 8 and flows out oftubes 7 in the area of second tube ends 9 and is then supplied to an intake tract of the internal combustion engine. -
Tubes 7 are arranged spaced apart from one another such thatgaps 20 are arranged between them. Coolant flows throughgaps 20. Coolant flows aroundtubes 7. In this case, heat is transferred from the exhaust gas to the coolant and the exhaust gas is cooled at least partially by the coolant. - In exemplary embodiments in which
heat exchanger 1 is formed as a charge air cooler, charge air flows throughtubes 7 and is cooled by the coolant. -
Tubes 7 have a surface on which in the exemplary embodiment shown inFIGS. 1 and 2 spacers 22 are arranged. In alternative exemplary embodiments, turbulence inserts and/or corrugated fins as well can be arranged on the surface oftubes 7 and/or betweentubes 7 in the area ofgaps 20. An exemplary embodiment ofheat exchanger 1, which hastubes 107 with asmooth surface 123, is shown inFIGS. 5 and 6 . -
First tube sheet 10 in the exemplary embodiment shown inFIGS. 1 and 2 in the area of first housing side 3 forms a first plane arranged perpendicular to the longitudinal direction ofhousing 2.First tube sheet 10 has a circumferentialfirst edge 14 raised at a first angle a from the first plane. - A detailed illustration of
first edge 14 of the exemplary embodiment, shown inFIGS. 1 and 2 , ofheat exchanger 1 is shown inFIG. 3 .First edge 14 has afirst contact side 16 and asecond contact side 17 opposite tofirst contact side 16.First contact side 16 is connected to inner housing wall 5 in the area of first housing side 3. In this case,first contact side 16 and inner housing wall 5 can be connected in particular with solder and/or by material bonding. For the sake of clarity,first contact side 16 and inner housing wall 5 as well astubes 7 andfirst tube sheet 10 are shown spaced apart from one another. - Second tube sheet 12 in the exemplary embodiment shown in
FIGS. 1 and 2 in the area ofsecond housing side 4 forms a second plane arranged perpendicular to the longitudinal direction ofhousing 2. Second tube sheet 12 has a circumferentialsecond edge 15 raised at asecond angle 13 from the second plane. - A detailed illustration of
second edge 15 of the exemplary embodiment, shown inFIGS. 1 and 2 , ofheat exchanger 1 is shown inFIG. 4 .Second edge 15 has a first contact area 18 and a second contact area 19 opposite to first contact area 18. First contact area 18 is connected to inner housing wall 5 in the area ofsecond housing side 4. In this case, first contact area 18 and inner housing wall 5 can be connected in particular with solder and/or by material bonding. For the sake of clarity, first contact area 18 and inner housing wall 5 as well astubes 7 and second tube sheet 12 are shown spaced apart from one another. -
FIGS. 5 and 6 show a further exemplary embodiment of aheat exchanger 101 of the invention.Heat exchanger 101 is disposed by way of example as an exhaust gas heat exchanger in an exhaust gas recirculation system of a motor vehicle. Alternatively,heat exchanger 101 can also be disposed as a charge air cooler within an exhaust gas recirculation system of a motor vehicle. Moreover,heat exchanger 101 can also be disposed elsewhere. -
Heat exchanger 101 has ahousing 102.Housing 102 is made substantially as a type of tubular shell body, for example, of sheet steel and has aninner housing wall 105 and anouter housing wall 106. -
Housing 102 at its end has afirst housing side 103 and an end-side,second housing side 104 opposite tofirst housing side 103. On the circumferential side,housing 102 has an inlet opening 121 and an outlet opening (not shown). A housing interior, substantially delimited byinner housing wall 105, is fluidically connected to a coolant circuit via inlet opening 121 and the outlet opening. In this case, a substantially liquid coolant flows into the housing interior through inlet opening 121 and out of the housing interior through the outlet opening. - In the area of the housing interior, a number of
tubes 107 are arranged parallel to one another and parallel to the longitudinal direction ofhousing 102.Tubes 107 have afirst tube end 108, which is disposed in the area offirst housing side 103, and asecond tube end 109, which is disposed in the area ofsecond housing side 104.Tubes 107 are made, for example, as flat tubes. In alternative embodiments, the tubes may also have a substantially circular cross section. - In the area of
first housing side 103, a first tube sheet 110 is arranged substantially perpendicular to the longitudinal axis ofhousing 102. First tube sheet 110 has a number of first through-openings 111, which are arranged vertically to the longitudinal direction ofhousing 102 and are penetrated by first tube ends 108. In the area ofsecond housing side 104, asecond tube sheet 112 is arranged substantially perpendicular to the longitudinal axis ofhousing 102.Second tube sheet 112 has a number of second through-openings 113, which are arranged vertically to the longitudinal direction ofhousing 102 and are penetrated by second tube ends 109. - First through-
openings 111 and second through-openings 113 can have passages. First tube ends 108 can be soldered to first tube sheet 110 in the area of first through-openings 111. Second tube ends 109 can be soldered tosecond tube sheet 112 in the area of second through-openings 113. - For example, an exhaust gas stream, discharged by the internal combustion engine of the motor vehicle, flows through
tubes 107. The exhaust gas stream flows intotubes 107, for example, in the area of first tube ends 108 and flows out oftubes 107 in the area of second tube ends 109 and is then supplied to an intake tract of the internal combustion engine. -
Tubes 107 are arranged spaced apart from one another such thatgaps 120 are arranged between them. Coolant flows throughgaps 120. Coolant flows aroundtubes 107. In this case, heat is transferred from the exhaust gas to the coolant and the exhaust gas is cooled at least partially by the coolant. - In exemplary embodiments in which
heat exchanger 101 is formed as a charge air cooler, charge air flows throughtubes 107 and is cooled by the coolant. -
Tubes 107 have asmooth surface 123. In alternative embodiments, spacers may be arranged on the surface oftubes 107 and/or turbulence inserts and/or corrugated fins may be arranged on the surface oftubes 107 and/or betweentubes 107 in the area ofgaps 120. - First tube sheet 110 in the exemplary embodiment shown in
FIGS. 5 and 6 in the area offirst housing side 103 forms a first plane arranged perpendicular to the longitudinal direction ofhousing 102. First tube sheet 110 has a circumferentialfirst edge 114 raised at a first angle a from the first plane. - A detailed illustration of
first edge 114 of the exemplary embodiment, shown inFIGS. 5 and 6 , ofheat exchanger 101 is shown inFIG. 7 .First edge 114 has a first contact side 116 and asecond contact side 117 opposite to first contact side 116.Second contact side 117 is connected toouter housing wall 106 in the area offirst housing side 103. In this case,second contact side 117 andouter housing wall 106 can be connected in particular with solder and/or by material bonding. For the sake of clarity,second contact side 117 andouter housing wall 106 as well astubes 107 andsecond tube sheet 112 are shown spaced apart from one another. -
Second tube sheet 112 in the exemplary embodiment shown inFIGS. 5 and 6 in the area ofsecond housing side 104 forms a second plane arranged perpendicular to the longitudinal direction ofhousing 102.Second tube sheet 112 has a circumferential second edge 115 raised at asecond angle 13 from the second plane. - A detailed illustration of second edge 115 of the exemplary embodiment, shown in
FIGS. 5 and 6 , ofheat exchanger 101 is shown inFIG. 8 . Second edge 115 has a first contact area 118 and a second contact area 119 opposite to first contact area 118. Second contact area 119 is connected toouter housing wall 106 in the area ofsecond housing side 104. In this case, second contact area 119 andouter housing wall 106 can be connected in particular with solder and/or by material bonding. For the sake of clarity, second contact side 119 andouter housing wall 106 as well astubes 107 andsecond tube sheet 112 are shown spaced apart from one another. - The exemplary embodiments shown in
FIGS. 1, 2, 5, and 6 , moreover, have acircumferential flange 24 or acircumferential flange 124. -
Tube sheets FIGS. 1, 2, 5, and 6 , can be fabricated in particular as deep-drawn pots. - The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.
Claims (13)
1. A heat exchanger comprising:
a housing with a first housing side and a second housing side opposite to the first housing side and with an inner housing wall and an outer housing wall;
tubes through which a gas is adapted to flow, the tubes being arranged in the housing, the tubes each have a first tube end and a second tube end opposite to the first tube end;
a first tube sheet arranged in an area of the first housing side, the first tube sheet having a plurality of first through-openings through which the first tube ends extend; and
a second tube sheet arranged in an area of the second housing side, the second tube sheet having a plurality of second through-openings through which the second tube ends,
wherein the first tube sheet forms a first plane and the second tube sheet forms a second plane,
wherein the first tube sheet has a first circumferential edge raised at a first angle from the first plane and the second tube sheet has a circumferential second edge raised at a second angle from the second plane, and
wherein the first edge in the area of the first housing side is connected to the inner housing wall or in the area of the first housing side to the outer housing wall and/or wherein the second edge in the area of the second housing side is connected to the inner housing wall or in the area of the second housing side to the outer housing wall.
2. The heat exchanger according to claim 1 , wherein the first edge has a first contact side and a second contact side opposite to the first contact side, wherein the first contact side in the area of the first housing side is connected to the inner housing wall or the second contact side in the area of the first housing side is connected to the outer housing wall.
3. The heat exchanger according to claim 1 , wherein the second edge has a first contact area and a second contact area opposite to the first contact area, wherein the first contact area in the area of the second housing side is connected to the inner housing wall or the second contact area in the area of the second housing side is connected to the outer housing wall.
4. The heat exchanger according to claim 1 , wherein the tubes are arranged substantially lying parallel next to one another in the longitudinal direction such that gaps, through which a coolant is adapted to flow, are formed between the tubes.
5. The heat exchanger according to claim 1 , wherein the first contact side and/or the second contact side and/or the first contact area and/or the second contact area are connected to the inner housing wall and/or the outer housing wall by soldering or welding.
6. The heat exchanger according to claim 1 , wherein the first contact side and/or the second contact side and/or the first contact area and/or the second contact area are connected to the inner housing wall and/or the outer housing wall substantially by material bonding.
7. The heat exchanger according to claim 1 , wherein the first tube ends in the area of the first through-openings are connected to the first tube sheet by soldering or welding and the second tube ends in the area of the second through-openings are connected to the second tube sheet by soldering or welding.
8. The heat exchanger according to claim 1 , wherein the first through-openings and/or the second through-openings each have passages through which the first tube ends and/or the second tube ends extend.
9. The heat exchanger according to claim 1 , wherein the housing has an inlet opening for a coolant supply and/or an outlet opening for coolant removal.
10. The heat exchanger according to claim 1 , wherein the tubes are formed as flat tubes, and/or turbulence inserts and/or spacers and/or corrugated fins are arranged between the tubes, and/or wherein the tubes have a substantially smooth surface and/or a substantially circular cross section.
11. The heat exchanger according to claim 1 , wherein the first tube sheet and/or the second tube sheet are produced in a deep-drawing process.
12. The heat exchanger according to claim 1 , wherein a bypass channel is located in an area of the housing.
13. The heat exchanger according to claim 1 , wherein the heat exchanger is an exhaust gas heat exchanger or a charge air cooler for a motor vehicle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015210942.9 | 2015-06-15 | ||
DE102015210942.9A DE102015210942A1 (en) | 2015-06-15 | 2015-06-15 | Heat exchanger |
Publications (1)
Publication Number | Publication Date |
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US20160363380A1 true US20160363380A1 (en) | 2016-12-15 |
Family
ID=56087202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/182,790 Abandoned US20160363380A1 (en) | 2015-06-15 | 2016-06-15 | Heat exchanger |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160363380A1 (en) |
EP (1) | EP3106820A3 (en) |
JP (1) | JP2017003260A (en) |
DE (1) | DE102015210942A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019245292A1 (en) * | 2018-06-20 | 2019-12-26 | 한온시스템 주식회사 | Heat exchanger for cooling exhaust gas in vehicle |
US11231232B2 (en) * | 2019-03-29 | 2022-01-25 | Mahle International Gmbh | Heat exchanger |
US11236952B2 (en) * | 2019-04-02 | 2022-02-01 | Mahle International Gmbh | Heat exchanger |
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DE102014006761A1 (en) * | 2013-06-21 | 2014-12-24 | Modine Manufacturing Company | exhaust gas cooler |
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-
2015
- 2015-06-15 DE DE102015210942.9A patent/DE102015210942A1/en not_active Withdrawn
-
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- 2016-05-30 EP EP16171926.5A patent/EP3106820A3/en not_active Withdrawn
- 2016-06-15 US US15/182,790 patent/US20160363380A1/en not_active Abandoned
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US5915472A (en) * | 1996-05-22 | 1999-06-29 | Usui Kokusai Sangyo Kaisha Limited | Apparatus for cooling EGR gas |
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Also Published As
Publication number | Publication date |
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JP2017003260A (en) | 2017-01-05 |
EP3106820A3 (en) | 2016-12-28 |
DE102015210942A1 (en) | 2016-12-15 |
EP3106820A2 (en) | 2016-12-21 |
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