US20060201661A1 - Egr cooler - Google Patents

Egr cooler Download PDF

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Publication number
US20060201661A1
US20060201661A1 US10/564,160 US56416004A US2006201661A1 US 20060201661 A1 US20060201661 A1 US 20060201661A1 US 56416004 A US56416004 A US 56416004A US 2006201661 A1 US2006201661 A1 US 2006201661A1
Authority
US
United States
Prior art keywords
shell
coolant
water
supply chamber
egr cooler
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.)
Abandoned
Application number
US10/564,160
Other languages
English (en)
Inventor
Hiroyuki Sugihara
Makoto Tsujita
Yoji Yamashita
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.)
Hino Motors Ltd
Denso Sankyo Co Ltd
Original Assignee
Hino Motors Ltd
Sankyo Radiator Co Ltd
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 Hino Motors Ltd, Sankyo Radiator Co Ltd filed Critical Hino Motors Ltd
Publication of US20060201661A1 publication Critical patent/US20060201661A1/en
Assigned to SANKYO RADIATOR CO., LTD., HINO MOTORS, LTD. reassignment SANKYO RADIATOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUGIHARA, HIROYUKI, TSUJITA, MAKOTO, YAMASHITA, YOJI
Abandoned 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
    • F28D7/1607—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 with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box
    • 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
    • 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
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/029—Other particular headers or end plates with increasing or decreasing cross-section, e.g. having conical shape

Definitions

  • the present invention relates to an EGR cooler attached to an EGR apparatus, which recirculates exhaust gas from an engine to suppress generation of nitrogen oxides, so as to cool the exhaust gas for recirculation.
  • EGR apparatus which recirculates part of exhaust gas from an engine in a vehicle or the like to the engine to suppress generation of nitrogen oxides.
  • Some of such EGR apparatuses are equipped with, midway of an exhaust gas recirculation line to the engine, an EGR cooler for cooling the exhaust gas since cooling the exhaust gas to be recirculated to the engine will drop the temperature of and reduce the volume of the exhaust gas to lower the combustion temperature in the engine without substantial decrease in output of the engine, thereby effectively suppressing generation of nitrogen oxides.
  • FIG. 1 is a sectional view showing an example of the EGR coolers in which reference numeral 1 denotes a cylindrical shell with axially opposite ends to which plates 2 are respectively fixed to close the ends of the shell 1 . Penetratingly fixed to the respective plates 2 are opposite ends of a number of tubes 3 which extend axially within the shell 1 .
  • the shell 1 is provided with a coolant-water inlet pipe 4 near one end of the shell 1 and with a coolant-water outlet pipe 5 near the other end of the shell 1 so that coolant water 9 is fed via the inlet pipe 4 into the shell 1 , flows outside of the tubes 3 and is discharged via the outlet pipe 5 from the shell 1 .
  • the respective plates 2 have, on their sides away from the shell 1 , bowl-shaped hoods 6 fixed to the respective plates 2 so as to enclose end faces of the plates.
  • the one and the other hoods 6 provide central exhaust-gas inlet and outlet 7 and 8 , respectively, so that exhaust gas 10 from the engine enters via the inlet 7 into the one hood 6 , is cooled during passage through the number of tubes 3 by means of heat exchange with coolant water 9 flowing outside of the tubes 3 and is discharged to the other hood 6 to be recirculated via the outlet 8 to the engine.
  • the conventional bypass outlet pipe 5 a serves also as air vent for discharge of air admixing in the shell 1 .
  • the coolant water inlet pipe 4 and the bypass outlet pipe 5 a must be vertically oppositely arranged such that the latter is above the former.
  • mounted posture of an EGR cooler to a vehicle has been restricted.
  • the prevent invention was made in view of the above and has its object to prevent coolant water from stagnating without restricting mounted posture of an EGR cooler to a vehicle.
  • the invention is directed to an EGR cooler comprising tubes and a shell surrounding said tubes, coolant water being fed into and discharged from said shell, exhaust gas being passed through said tubes for heat exchange of said exhaust gas with said coolant water, characterized in that an annular coolant-water supply chamber is fitted over said shell near an axial end of said shell, a coolant-water inlet pipe being connected to a periphery of the supply chamber, communicating holes being formed at a plurality of peripheral positions on the shell surrounded by said supply chamber such that the holes have gradually reduced diameters as said holes are peripherally apart from the connection between the chamber and the inlet pipe so as to substantially evenly introduce the coolant water into the shell via the holes.
  • the coolant water fed via the inlet pipe into the supply chamber is distributed all over the periphery of the supply chamber and is substantially evenly introduced via the respective communicating holes in a dispersed manner, so that the coolant water is prevented from stagnating near the axial end of the shell.
  • the highest one of the plural communicating holes sequentially arranged along the periphery of the shell serves as air vent for discharge of the air out of the shell, so that the EGR cooler may be freely displaced around an axis of the shell into any posture.
  • the coolant water fed via the inlet pipe firstly impinges against the zone with no communication holes to be satisfactorily divided into two, whereby the coolant water is efficiently distributed all over the periphery of the supply chamber.
  • the coolant water can be fed into the shell substantially evenly via the communicating holes in a dispersed manner to prevent the coolant water from stagnating; as a result, efficiency in heat exchange between the exhaust gas and the coolant water is substantially enhanced to surely prevent the tubes from being thermally deformed due to local high temperature.
  • the EGR cooler may be displaced around the axis of the shell into any posture to freely change the direction of the inlet pipe; as a result, restriction of the mounted posture of the EGR cooler to the vehicle may be substantially relieved in comparison with the prior art.
  • FIG. 1 A sectional view showing an example of a conventional EGR cooler.
  • FIG. 2 A sectional view showing an embodiment of the invention.
  • FIG. 3 A sectional view looking in the direction of arrows III in FIG. 2 .
  • FIG. 4 A sectional view of the EGR cooler in a mounted posture different from that in FIG. 3 .
  • FIG. 5 A sectional view of the EGR cooler in a mounted posture further different from that in FIG. 3 .
  • FIGS. 2-5 shows an embodiment of the invention in which parts similar to those in FIG. 1 are represented by the same reference numerals.
  • an annular coolant-water supply chamber 11 is fitted over a shell 1 near an axial end of said shell (near the left end of the shell in FIG. 2 ); a coolant-water inlet pipe 4 is connected to a periphery of the supply chamber 11 (a lowermost portion in the figure); and communicating holes 12 are formed at a plurality of peripheral positions on a portion of the shell 1 surrounded by the supply chamber 11 such that the holes have gradually reduced diameters as they are peripherally apart from the connection of the chamber with the inlet pipe 4 so as to introduce the coolant water 9 into the shell 1 substantially evenly via the holes 12 .
  • the portion of the shell 1 surrounded by the supply chamber 11 has a required extent of peripheral zone 13 facing the inlet pipe 4 and having no communicating holes 12 .
  • an annular coolant-water discharge chamber 14 is also fitted over the shell 1 near the other axial end of the shell 1 (near the right end of the shell in FIG. 2 ); a coolant-water outlet pipe 5 is connected to a periphery of the discharge chamber 14 (an uppermost portion in the figure); and communicating holes 15 are formed at a plurality of peripheral positions on the portion of the shell 1 surrounded by the discharge chamber 14 .
  • a coolant-water outlet pipe 5 may be provided as in the prior art.
  • the coolant water 9 fed via the inlet pipe 4 into the supply chamber 11 firstly impinges against the zone with no holes and is satisfactorily divided into two, and is efficiently distributed all over the supply chamber 11 ; as a result, it is introduced into the shell 1 substantially evenly via the respective communicating holes 12 , so that the coolant water 9 is prevented from stagnating near the one axial end of the shell 1 .
  • the highest one of the plural communicating holes arranged serially along the periphery of the shell 1 serves as air vent for discharge of air out of the shell 1 , so that it is for example possible, as shown in FIGS. 4 and 5 , to displace the EGR cooler around the axis of the shell 1 into any posture so as to freely change the direction of the inlet pipe 4 .
  • the coolant water 9 can be introduced into the shell 1 substantially evenly via the respective communicating holes 12 so as to prevent formation of stagnation.
  • efficiency in heat exchange between the exhaust gas 10 and the coolant water 9 is substantially enhanced to surely prevent the tubes 3 from being thermally deformed due to local high temperature.
  • the EGR cooler may be displaced about the axis of the shell 1 into any posture to freely change the direction of the inlet pipe 4 , then restriction of the mounted posture to the vehicle can be substantially relieved in comparison with the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust Silencers (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
US10/564,160 2003-07-18 2004-07-12 Egr cooler Abandoned US20060201661A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2003-276680 2003-07-18
JP2003276680A JP2005036765A (ja) 2003-07-18 2003-07-18 Ｅｇｒクーラ
PCT/JP2004/009940 WO2005008055A1 (ja) 2003-07-18 2004-07-12 Ｅｇｒクーラ

Publications (1)

Publication Number Publication Date
US20060201661A1 true US20060201661A1 (en) 2006-09-14

Family

ID=34074604

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/564,160 Abandoned US20060201661A1 (en) 2003-07-18 2004-07-12 Egr cooler

Country Status (6)

Country Link
US (1) US20060201661A1 (ja)
EP (1) EP1647697A1 (ja)
JP (1) JP2005036765A (ja)
KR (1) KR20060063885A (ja)
CN (1) CN1826461A (ja)
WO (1) WO2005008055A1 (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090277606A1 (en) * 2008-05-12 2009-11-12 Reiss Iii Thomas J Heat exchanger support and method of assembling a heat exchanger
US20090313992A1 (en) * 2008-06-24 2009-12-24 Ford Global Technologies, Inc. System for Controlling Contaminant Deposition in Exhaust Gas Recirculation Coolers
US20110067837A1 (en) * 2006-06-22 2011-03-24 Harald Schatz Heat exchanger
US20110186276A1 (en) * 2010-01-29 2011-08-04 Casterton Joel T Heat exchanger assembly and method
WO2014014863A1 (en) * 2012-07-16 2014-01-23 Caterpillar Inc. Heat exchanger for exhaust gas recirculation
US20140196700A1 (en) * 2011-05-31 2014-07-17 Behr Gmbh & Co. Kg Heat exchanger
US20140311466A1 (en) * 2013-04-17 2014-10-23 Caterpillar Inc. Coolant Inlet Structures for Heat Exchangers for Exhaust Gas Recirculation Systems
US20150027673A1 (en) * 2011-12-22 2015-01-29 Valeo Termico, S.A. Heat Exchanger For Gases, In Particular For The Exhaust Gases Of An Engine
US11644252B2 (en) * 2019-03-28 2023-05-09 Ngk Insulators, Ltd. Flow path structure of heat exchanger, and heat exchanger
US11719489B2 (en) * 2019-03-27 2023-08-08 Ngk Insulators, Ltd. Heat exchanger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060174611A1 (en) * 2005-02-07 2006-08-10 Dilley Roland L Exhaust gas cooler
DE102005037156A1 (de) * 2005-08-06 2007-02-08 Daimlerchrysler Ag Wärmetauscher
DE202007019617U1 (de) * 2006-01-23 2014-07-22 Behr Gmbh & Co. Kg Wärmetauscher
JP4775287B2 (ja) * 2006-10-18 2011-09-21 株式会社デンソー 熱交換器
US8794299B2 (en) * 2007-02-27 2014-08-05 Modine Manufacturing Company 2-Pass heat exchanger including thermal expansion joints
JP5128908B2 (ja) * 2007-11-05 2013-01-23 東京ラヂエーター製造株式会社 Ｅｇｒクーラ
WO2009094637A2 (en) * 2008-01-24 2009-07-30 Modine Manufacturing Company Air-cooled heat exchanger and blower assembly and method
CN104061808B (zh) * 2014-07-04 2016-08-17 大连海新工程技术有限公司 可防止介质滞留的卧式管壳换热器
CN104197750B (zh) * 2014-09-23 2017-11-21 大连葆光节能空调设备厂 楔形管式换热器
CN107687726B (zh) * 2016-08-03 2020-10-27 杭州三花研究院有限公司 热交换装置
CN106323043A (zh) * 2016-09-30 2017-01-11 如东双洋机械设备有限公司 一种压缩空气预冷器
MX2019006945A (es) * 2016-12-13 2019-10-21 Texas A & M Univ Sys Intercambiadores de calor sensibles y latentes con aplicacion particular a la desalinizacion por compresion de vapor.
EP3561426B1 (en) * 2016-12-20 2021-06-09 Tokyo Roki Co., Ltd. Heat exchange device
US10876445B2 (en) * 2019-02-01 2020-12-29 Caterpillar Inc. Heated inlet of a crankcase ventilation system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831294A (ja) * 1981-08-19 1983-02-23 Toshiba Corp 熱交換器
JPS6143694U (ja) * 1984-08-20 1986-03-22 三菱重工業株式会社 多管式熱交換器
JP2000045884A (ja) * 1998-07-24 2000-02-15 Hino Motors Ltd Ｅｇｒクーラ

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8978740B2 (en) 2006-06-22 2015-03-17 Modine Manufacturing Company Heat exchanger
US20110067837A1 (en) * 2006-06-22 2011-03-24 Harald Schatz Heat exchanger
US9933216B2 (en) 2006-06-22 2018-04-03 Modine Manufacturing Company Heat exchanger
US20090277606A1 (en) * 2008-05-12 2009-11-12 Reiss Iii Thomas J Heat exchanger support and method of assembling a heat exchanger
US20090313992A1 (en) * 2008-06-24 2009-12-24 Ford Global Technologies, Inc. System for Controlling Contaminant Deposition in Exhaust Gas Recirculation Coolers
US8061138B2 (en) 2008-06-24 2011-11-22 Ford Global Technologies, Llc System for controlling contaminant deposition in exhaust gas recirculation coolers
US20110186276A1 (en) * 2010-01-29 2011-08-04 Casterton Joel T Heat exchanger assembly and method
US9403204B2 (en) 2010-01-29 2016-08-02 Modine Manufacturing Company Heat exchanger assembly and method
US20140196700A1 (en) * 2011-05-31 2014-07-17 Behr Gmbh & Co. Kg Heat exchanger
US20150027673A1 (en) * 2011-12-22 2015-01-29 Valeo Termico, S.A. Heat Exchanger For Gases, In Particular For The Exhaust Gases Of An Engine
US9791215B2 (en) * 2011-12-22 2017-10-17 Valeo Termico, S.A. Heat exchanger for gases, in particular for the exhaust gases of an engine
WO2014014863A1 (en) * 2012-07-16 2014-01-23 Caterpillar Inc. Heat exchanger for exhaust gas recirculation
US20140311466A1 (en) * 2013-04-17 2014-10-23 Caterpillar Inc. Coolant Inlet Structures for Heat Exchangers for Exhaust Gas Recirculation Systems
US11719489B2 (en) * 2019-03-27 2023-08-08 Ngk Insulators, Ltd. Heat exchanger
US11644252B2 (en) * 2019-03-28 2023-05-09 Ngk Insulators, Ltd. Flow path structure of heat exchanger, and heat exchanger

Also Published As

Publication number Publication date
EP1647697A1 (en) 2006-04-19
CN1826461A (zh) 2006-08-30
KR20060063885A (ko) 2006-06-12
JP2005036765A (ja) 2005-02-10
WO2005008055A1 (ja) 2005-01-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HINO MOTORS, LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SUGIHARA, HIROYUKI;TSUJITA, MAKOTO;YAMASHITA, YOJI;REEL/FRAME:018959/0490

Effective date: 20051128

Owner name: SANKYO RADIATOR CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SUGIHARA, HIROYUKI;TSUJITA, MAKOTO;YAMASHITA, YOJI;REEL/FRAME:018959/0490

Effective date: 20051128

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION