EP1647697A1 - Egr cooler - Google Patents
Egr cooler Download PDFInfo
- Publication number
- EP1647697A1 EP1647697A1 EP04747406A EP04747406A EP1647697A1 EP 1647697 A1 EP1647697 A1 EP 1647697A1 EP 04747406 A EP04747406 A EP 04747406A EP 04747406 A EP04747406 A EP 04747406A EP 1647697 A1 EP1647697 A1 EP 1647697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- coolant
- water
- egr cooler
- supply chamber
- 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.)
- Withdrawn
Links
Images
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 5a 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 5a 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.
- 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.
- 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)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Exhaust Silencers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
---|---|
EP1647697A1 true EP1647697A1 (en) | 2006-04-19 |
Family
ID=34074604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04747406A Withdrawn EP1647697A1 (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 (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007017064A1 (de) * | 2005-08-06 | 2007-02-15 | Daimler Ag | Wärmetauscher |
WO2013092641A1 (fr) * | 2011-12-22 | 2013-06-27 | Valeo Termico, S.A. | Echangeur de chaleur pour gaz, en particulier pour gaz d'echappement d'un moteur |
EP3561426A4 (en) * | 2016-12-20 | 2020-07-08 | Tokyo Roki Co., Ltd. | HEAT EXCHANGE DEVICE |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060174611A1 (en) * | 2005-02-07 | 2006-08-10 | Dilley Roland L | Exhaust gas cooler |
WO2007082774A2 (de) * | 2006-01-23 | 2007-07-26 | Behr Gmbh & Co. Kg | Wärmetauscher |
US9403204B2 (en) * | 2010-01-29 | 2016-08-02 | Modine Manufacturing Company | Heat exchanger assembly and method |
US8978740B2 (en) | 2006-06-22 | 2015-03-17 | Modine Manufacturing Company | Heat exchanger |
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 |
DE102009020306A1 (de) * | 2008-05-12 | 2010-02-11 | Modine Manufacturing Co., Racine | Wärmetauscher und Verfahren zum Zusammenbau |
US8061138B2 (en) * | 2008-06-24 | 2011-11-22 | Ford Global Technologies, Llc | System for controlling contaminant deposition in exhaust gas recirculation coolers |
DE102011076800A1 (de) * | 2011-05-31 | 2012-12-06 | Behr Gmbh & Co. Kg | Wärmeübertrager |
US9217610B2 (en) * | 2012-07-16 | 2015-12-22 | 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 |
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 |
US20190301808A1 (en) * | 2016-12-13 | 2019-10-03 | The Texas A&M University System | Sensible and Latent Heat Exchangers with Particular Application to Vapor-Compression Desalination |
US10876445B2 (en) * | 2019-02-01 | 2020-12-29 | Caterpillar Inc. | Heated inlet of a crankcase ventilation system |
JP7169923B2 (ja) * | 2019-03-27 | 2022-11-11 | 日本碍子株式会社 | 熱交換器 |
CN111750705B (zh) * | 2019-03-28 | 2022-04-29 | 日本碍子株式会社 | 热交换器的流路结构以及热交换器 |
Family Cites Families (3)
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 |
-
2003
- 2003-07-18 JP JP2003276680A patent/JP2005036765A/ja active Pending
-
2004
- 2004-07-12 CN CNA2004800207459A patent/CN1826461A/zh active Pending
- 2004-07-12 US US10/564,160 patent/US20060201661A1/en not_active Abandoned
- 2004-07-12 WO PCT/JP2004/009940 patent/WO2005008055A1/ja active Application Filing
- 2004-07-12 EP EP04747406A patent/EP1647697A1/en not_active Withdrawn
- 2004-07-12 KR KR1020067000850A patent/KR20060063885A/ko not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2005008055A1 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007017064A1 (de) * | 2005-08-06 | 2007-02-15 | Daimler Ag | Wärmetauscher |
WO2013092641A1 (fr) * | 2011-12-22 | 2013-06-27 | Valeo Termico, S.A. | Echangeur de chaleur pour gaz, en particulier pour gaz d'echappement d'un moteur |
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 |
EP3561426A4 (en) * | 2016-12-20 | 2020-07-08 | Tokyo Roki Co., Ltd. | HEAT EXCHANGE DEVICE |
US10767605B2 (en) | 2016-12-20 | 2020-09-08 | Tokyo Roki Co., Ltd. | Heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
US20060201661A1 (en) | 2006-09-14 |
CN1826461A (zh) | 2006-08-30 |
WO2005008055A1 (ja) | 2005-01-27 |
JP2005036765A (ja) | 2005-02-10 |
KR20060063885A (ko) | 2006-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20051228 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: YAMASHITA, YOJI,C/O SANKYO RADIATOR CO., LTD. Inventor name: SUGIHARA, HIROYUKI,C/O HINO MOTORS, LTD. Inventor name: TSUJITA, MAKOTO,C/O HINO MOTORS, LTD. |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20100119 |