WO2022092151A1 - Ｅｇｒクーラおよび車両用廃熱回収器 - Google Patents

Ｅｇｒクーラおよび車両用廃熱回収器 Download PDF

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Publication number
WO2022092151A1
WO2022092151A1 PCT/JP2021/039661 JP2021039661W WO2022092151A1 WO 2022092151 A1 WO2022092151 A1 WO 2022092151A1 JP 2021039661 W JP2021039661 W JP 2021039661W WO 2022092151 A1 WO2022092151 A1 WO 2022092151A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
water
egr cooler
water outlet
cooling water
Prior art date
Application number
PCT/JP2021/039661
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
征二 菅田
正揮 嶽下
Original Assignee
東京ラヂエーター製造株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東京ラヂエーター製造株式会社 filed Critical 東京ラヂエーター製造株式会社
Priority to CN202180073846.6A priority Critical patent/CN116583660A/zh
Priority to JP2022559198A priority patent/JP7714568B2/ja
Publication of WO2022092151A1 publication Critical patent/WO2022092151A1/ja

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Classifications

    • 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 by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • 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
    • 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
    • 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
    • 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

  • This disclosure relates to an EGR cooler and a waste heat recovery device for vehicles.
  • Patent Document 1 an EGR cooler that cools exhaust gas from automobiles and the like is known.
  • the EGR cooler described in Patent Document 1 enhances the cooling efficiency by evenly flowing the cooling water to the outer surface side of the flat tube through which the exhaust gas passes through the inlet of the cooling water.
  • the structure of Patent Document 1 can improve the cooling efficiency in the vicinity of the inlet of the cooling water, there is room for improvement in that the cooling efficiency of the entire EGR cooler is improved.
  • the present disclosure provides an EGR cooler and a waste heat recovery device for vehicles with improved overall cooling efficiency.
  • the EGR cooler according to one aspect of the present disclosure is It has a plurality of tubes through which exhaust gas flows and a casing for accommodating the tubes.
  • An EGR cooler that exchanges heat between the exhaust gas and the cooling water via the tube by flowing cooling water into the casing.
  • the EGR cooler is A gas inlet for introducing the exhaust gas into the tube, A gas outlet that discharges the exhaust gas from the tube, A water inlet for introducing the cooling water into the casing, It has a water outlet portion for discharging the cooling water from the casing, and has.
  • the water outlet is The main body that forms the water outlet passage through which the cooling water passes, and It has a blocking portion extending in a direction away from the water inlet portion from the main body portion on the side closer to the water inlet portion than the water outlet passage.
  • the vehicle waste heat recovery device is It has a plurality of tubes through which exhaust gas flows and a casing for accommodating the tubes.
  • a waste heat recovery device for vehicles that exchanges heat between the exhaust gas and the cooling water via the tube by flowing cooling water into the casing.
  • the waste heat recovery device for vehicles is A gas inlet for introducing the exhaust gas into the tube, A gas outlet that discharges the exhaust gas from the tube, A water inlet for introducing the cooling water into the casing, It has a water outlet portion for discharging the cooling water from the casing, and has.
  • the water outlet is The main body that forms the water outlet passage through which the cooling water passes, and It has a blocking portion extending in a direction away from the water inlet portion from the main body portion on the side closer to the water inlet portion than the water outlet passage.
  • an EGR cooler with improved overall cooling efficiency and a waste heat recovery device for vehicles are provided.
  • FIG. 1 It is a perspective view of the EGR cooler which concerns on embodiment of this disclosure. It is an exploded perspective view of the EGR cooler. It is sectional drawing of EGR cooler seen from above. It is sectional drawing in the IV-IV cross section in FIG. It is sectional drawing in the VV cross section in FIG. It is an enlarged view of the VI part in FIG. It is a perspective view of an adapter. It is a top view which shows the adapter of the EGR cooler which concerns on the 1st modification of this disclosure. It is a top view which shows the adapter of the EGR cooler which concerns on the 2nd modification of this disclosure.
  • the “vertical direction” is a direction including the “upward direction” and the “downward direction”.
  • the “front-back direction” is a direction including the “forward direction” and the “rear direction”.
  • the “left-right direction” is a direction including "left direction” and "right direction”.
  • the reference numeral U shown in the figure described below indicates an upward direction.
  • Reference numeral D indicates a downward direction.
  • Reference numeral F indicates a forward direction.
  • Reference numeral B indicates a backward direction.
  • Reference numeral L indicates the left direction.
  • the reference numeral R indicates the right direction. It should be noted that when the EGR cooler is attached to the vehicle, these directions do not always match the respective directions set for the vehicle.
  • FIG. 1 is a perspective view of the EGR cooler 1 according to the embodiment of the present disclosure.
  • the EGR cooler 1 includes a heat exchange unit 10, a gas inlet unit 20 for introducing exhaust gas into the heat exchange unit 10, and a gas outlet unit 30 for discharging exhaust gas from the heat exchange unit 10. It has a water inlet section 40 for introducing cooling water into the heat exchange section 10, and a water outlet section 50 (see FIG. 2) for discharging cooling water from the heat exchange section 10.
  • hot exhaust gas flows from the front through the gas inlet portion 20 into the heat exchange unit 10, and heat exchange is performed with the cooling water inside the heat exchange unit 10, and the cooled exhaust gas is cooled. Is discharged rearward from the heat exchange section 10 through the gas outlet section 30. Further, the cold cooling water flows from below through the water inlet 40 at the rear of the heat exchange section 10 into the heat exchange section 10, exchanges heat with the exhaust gas inside the heat exchange section 10, and the heated cooling water is discharged. It is discharged downward through the water outlet portion 50 at the front of the heat exchange portion 10.
  • the illustrated EGR cooler 1 is a so-called countercurrent type EGR cooler in which the flow direction of the exhaust gas and the flow direction of the cooling water face each other in the heat exchange unit 10.
  • FIG. 2 is an exploded perspective view of the EGR cooler 1.
  • the heat exchange unit 10 has a plurality of tubes 11 and a casing 12 for accommodating these tubes 11.
  • the tube 11 is a flat hollow plate-shaped member long in the front-rear direction.
  • Exhaust gas flows inside the tube 11.
  • the cooling water flows inside the casing 12 in the space between the tubes 11.
  • Fins 17 are provided inside the tube 11 to assist heat exchange between the exhaust gas and the cooling water.
  • Dimples 13 are provided on the outer surface of the tube 11 to cause turbulence in the cooling water and promote heat exchange.
  • the casing 12 is a square cylindrical member that is long in the front-rear direction.
  • a front end plate 14 is attached to the front end of the casing 12.
  • a rear end plate 15 is attached to the rear end of the casing 12.
  • the gas inlet portion 20 is attached to the casing 12 via the front end plate 14.
  • the gas outlet portion 30 is attached to the casing 12 via the rear end plate 15.
  • the tube 11 is attached to the front end plate 14 and the rear end plate 15.
  • FIG. 3 is a cross-sectional view of the EGR cooler 1 seen from above.
  • FIG. 4 is a cross-sectional view taken along the IV-IV cross section of FIG.
  • the plurality of tubes 11 are arranged in the left-right direction in the casing 12.
  • An opening 14a is provided at a position corresponding to the opening of the tube 11 of the front end plate 14, and exhaust gas can be taken into the tube 11.
  • An opening is provided at a position corresponding to the opening of the tube 11 of the rear end plate 15, and the exhaust gas can be discharged from the tube 11 to the outside.
  • a closed space is formed between the casing 12, the tube 11, the front end plate 14, and the rear end plate 15. Has been done. Cooling water flows in this enclosed space.
  • FIG. 5 is a cross-sectional view taken along the line VV in FIG.
  • the water inlet portion 40 and the water outlet portion 50 are provided on the lower surface of the casing 12.
  • FIG. 6 is an enlarged view of the VI portion of FIG.
  • the water outlet portion 50 is formed as an adapter 51 attached to the casing 12.
  • the adapter 51 prevents the main body 53 forming the water outlet passage 52 through which the cooling water passes and the main body 53 closer to the water inlet 40 than the water outlet passage 52 from the main body 53 extending in a direction away from the water inlet 40. It is provided with a unit 54.
  • the water outlet portion 50 has a blocking portion extending in a direction away from the water inlet portion 40 from the main body portion 53 on the side closer to the water inlet portion 40 than the water outlet passage 52. 54 is provided.
  • the blocking portion 54 blocks the flow of the cooling water that tends to flow directly from the water inlet portion 40 to the water outlet portion 50.
  • the cooling water Y1 blocked by the blocking portion 54 wraps around the blocking portion 54 to the front of the water outlet passage 52, hits the front end plate 14, and turns downward, and further. After hitting the lower surface of the casing 12 and turning forward, the water is discharged to the outside through the water outlet passage 52.
  • the cooling water Y1 flowing around the blocking portion 54 in this way entrains the cooling water Y2 in the vicinity of the front upper region A in the casing 12 and flows. Therefore, by providing the blocking portion 54, the cooling water can widely flow in the casing 12.
  • the water outlet portion 50 is provided at a position closer to the gas inlet portion 20 than the water inlet portion 40, and the blocking portion 54 extends toward the gas inlet portion 20. That is, the EGR cooler 1 of this embodiment is a countercurrent type. In the case of such a countercurrent type EGR cooler 1, uncooled hot exhaust gas is blown to the tube 11 near the gas inlet portion 20. Therefore, the temperature of the tube 11 near the gas inlet portion 20 tends to be high. In the EGR cooler 1 of the present embodiment, the portion of the tube 11 that tends to have a high temperature can be cooled by the cooling water that flows around to the vicinity of the gas inlet portion 20 by the blocking portion 54 extending toward the gas inlet portion 20. can. Therefore, this embodiment is suitable for the countercurrent type EGR cooler 1.
  • FIG. 7 is a perspective view of the adapter 51.
  • the upper surface 53a of the main body 53 of the adapter 51 is provided with a vertical wall portion 55 extending upward and an extension wall portion 56.
  • the vertical wall portion 55 is a portion extending in the left-right direction.
  • the extension wall portion 56 is a portion extending forward from the right end and the left end of the standing wall portion 55.
  • the vertical wall portion 55 blocks the cooling water flowing from the water inlet portion 40 along the lower surface of the casing 12, and changes the flow upward.
  • the extension wall portion 56 prevents the cooling water flowing from the rear to the front from flowing into the water outlet passage 52 from the left and right sides of the standing wall portion 55.
  • a blocking portion 54 is provided on the upper surface of the standing wall portion 55 and the extension wall portion 56.
  • the blocking portion 54 has a plate shape extending in the front-rear direction and the left-right direction.
  • the blocking portion 54 is a substantially rectangular portion that is long in the left-right direction.
  • the central portion 54a in the left-right direction extends longest on the side opposite to the water inlet portion 40, and both end portions 54b in the left-right direction are shorter than the central portion 54a.
  • the front end of the blocking portion 54 extends to a position that covers at least a part of the water outlet passage 52.
  • the water outlet portion 50 is a vertical wall portion 55 protruding toward the inside of the casing 12 from the main body portion 53 on the side closer to the water inlet portion 40 than the water outlet passage 52. And a blocking portion 54 extending in a direction away from the water inlet portion 40 from the tip of the standing wall portion 55.
  • the cooling water can be circulated to the portion far from the water outlet portion 50 by the vertical wall portion 55 and the blocking portion 54, and the cooling water can be flowed more widely throughout the casing 12.
  • the EGR cooler 1 with higher cooling efficiency can be realized.
  • the water outlet portion 50 has a vertical wall portion 55 and an extension wall portion 56.
  • the vertical wall portion 55 protrudes toward the inside of the casing 12 from the main body portion 53 on the side closer to the water inlet portion 40 than the water outlet passage 52, and extends so as to block between the water inlet portion 40 and the water outlet passage 52.
  • the extension wall portion 56 extends from both ends of the standing wall portion 55 in a direction away from the water inlet portion 40.
  • the blocking portion 54 allows the cooling water to flow in a direction away from the lower side surface of the casing 12, and the extension wall portion 56 allows the cooling water to flow in a direction away from the water outlet portion 50.
  • the cooling water can be circulated in a wider range, and the cooling water can be flowed more widely throughout the casing 12.
  • the EGR cooler 1 with higher cooling efficiency can be realized.
  • the blocking portion 54 is provided inside the casing 12.
  • the EGR cooler 1 can be made smaller than the case where the blocking portion 54 is provided on the outside of the casing 12.
  • the blocking portion 54 extends into the space between the inner surface of the casing 12 and the tube 11. According to such a configuration, the cooling water flowing from the water inlet portion 40 along the lower surface of the casing 12 can flow toward the tube 11 performing heat exchange, and the cooling efficiency can be further improved. can.
  • a mounting hole 16 (see FIG. 6) is formed in the casing 12, and the main body 53 is mounted in the mounting hole 16.
  • the EGR cooler 1 can be easily assembled by separately preparing an adapter 51 having a complicated shape including the blocking portion 54 and attaching the adapter 51 to the casing 12.
  • the water outlet portion 50 including the blocking portion 54 may be integrally configured with the casing 12.
  • the casing 12 is made of a metal such as aluminum, stainless steel, or copper, the water outlet portion 50 can be provided integrally with the casing 12 by drilling or pressing.
  • the blocking portion 54 extends so as to face the water outlet passage 52.
  • the central portion 54a corresponding to the water outlet passage 52 extends from the end portion 54b to the side opposite to the water inlet portion 40.
  • the flow rate of the cooling water flowing through the central region in the left-right direction in the casing 12 is larger than the flow rate of the cooling water flowing through the left region and the right region thereof.
  • the central portion 54a at the tip of the blocking portion 54 is the longest and extends to the side opposite to the water inlet portion 40, it is difficult for the cooling water in the central region to flow, and the cooling water in the left region and the right region can easily flow. Therefore, the flow of the cooling water in the casing 12 can be made more uniform.
  • FIG. 8 is a top view showing the adapter 151 of the EGR cooler according to the first modification of the present disclosure.
  • FIG. 9 is a top view showing the adapter 251 of the EGR cooler according to the second modification of the present disclosure.
  • the blocking portion 154 of the adapter 151 may have a shape in which a rectangle and a semicircle are combined in a top view.
  • a standing wall portion 155 is provided at the upper part of the figure, and a blocking portion 154 extending from the standing wall portion 155 toward the gas inlet portion 20 (lower part of the figure) is provided.
  • the central portion 154a in the left-right direction of the tip portion of the blocking portion 154 extends longer toward the gas inlet portion 20 than the both end portions 154b.
  • the blocking portion 254 of the adapter 251 may be trapezoidal in top view.
  • a standing wall portion 255 is provided at the upper part of the figure, and a blocking portion 254 extending from the standing wall portion 255 toward the gas inlet portion 20 (lower part of the figure) is provided.
  • the central portion 254a in the left-right direction of the tip portion of the blocking portion 254 extends longer toward the gas inlet portion 20 than the end portion 254b.
  • a waste heat recovery device for a vehicle is a component mounted on a vehicle, which is also called a heat collector.
  • the waste heat recovery device for vehicles exchanges heat between the exhaust gas and the cooling water, and is used to heat the engine with the warmed cooling water to improve fuel efficiency.
  • Such a waste heat recovery device for vehicles also includes a tube, a casing, and the like, and can be configured in the same manner as described above.
  • EGR cooler 10 heat exchange part 11 tube 12 casing 13 dimple 14 front end plate 15 rear end plate 16 mounting hole 20 gas inlet part 30 gas outlet part 40 water inlet part 50 water outlet part 51 adapter 52 water outlet passage 53 main body part 54 Block 55 Standing wall 56 Extension wall A Front upper area

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
PCT/JP2021/039661 2020-11-02 2021-10-27 Ｅｇｒクーラおよび車両用廃熱回収器 WO2022092151A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180073846.6A CN116583660A (zh) 2020-11-02 2021-10-27 Egr冷却器以及车辆用废热回收器
JP2022559198A JP7714568B2 (ja) 2020-11-02 2021-10-27 Ｅｇｒクーラおよび車両用廃熱回収器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-183825 2020-11-02
JP2020183825 2020-11-02

Publications (1)

Publication Number Publication Date
WO2022092151A1 true WO2022092151A1 (ja) 2022-05-05

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Application Number Title Priority Date Filing Date
PCT/JP2021/039661 WO2022092151A1 (ja) 2020-11-02 2021-10-27 Ｅｇｒクーラおよび車両用廃熱回収器

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Country Link
JP (1) JP7714568B2 (enrdf_load_stackoverflow)
CN (1) CN116583660A (enrdf_load_stackoverflow)
WO (1) WO2022092151A1 (enrdf_load_stackoverflow)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633481U (enrdf_load_stackoverflow) * 1979-08-23 1981-04-01
JPS59191897A (ja) * 1983-04-15 1984-10-31 Babcock Hitachi Kk 多管式熱交換器
JPS63315893A (ja) * 1987-06-15 1988-12-23 Hitachi Ltd 多管式熱交換器
JPH05231793A (ja) * 1992-02-25 1993-09-07 Toshiba Corp 平行流形熱交換器
JP2000045884A (ja) * 1998-07-24 2000-02-15 Hino Motors Ltd Ｅｇｒクーラ
JP2005069064A (ja) * 2003-08-21 2005-03-17 Hino Motors Ltd Ｅｇｒクーラ
JP2008128611A (ja) * 2006-11-24 2008-06-05 T Rad Co Ltd Ｅｇｒクーラ
JP2012047105A (ja) * 2010-08-26 2012-03-08 Tokyo Radiator Mfg Co Ltd Ｅｇｒクーラ
US20150322898A1 (en) * 2014-05-07 2015-11-12 Caterpillar Inc. Heat exchanger for exhaust gas recirculation unit
JP2016044666A (ja) * 2014-08-27 2016-04-04 株式会社三五 内燃機関の排気熱回収装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4199511B2 (ja) * 2002-10-02 2008-12-17 日野自動車株式会社 Ｅｇｒクーラ
JP4324926B2 (ja) * 2004-09-28 2009-09-02 株式会社ティラド 熱交換器

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633481U (enrdf_load_stackoverflow) * 1979-08-23 1981-04-01
JPS59191897A (ja) * 1983-04-15 1984-10-31 Babcock Hitachi Kk 多管式熱交換器
JPS63315893A (ja) * 1987-06-15 1988-12-23 Hitachi Ltd 多管式熱交換器
JPH05231793A (ja) * 1992-02-25 1993-09-07 Toshiba Corp 平行流形熱交換器
JP2000045884A (ja) * 1998-07-24 2000-02-15 Hino Motors Ltd Ｅｇｒクーラ
JP2005069064A (ja) * 2003-08-21 2005-03-17 Hino Motors Ltd Ｅｇｒクーラ
JP2008128611A (ja) * 2006-11-24 2008-06-05 T Rad Co Ltd Ｅｇｒクーラ
JP2012047105A (ja) * 2010-08-26 2012-03-08 Tokyo Radiator Mfg Co Ltd Ｅｇｒクーラ
US20150322898A1 (en) * 2014-05-07 2015-11-12 Caterpillar Inc. Heat exchanger for exhaust gas recirculation unit
JP2016044666A (ja) * 2014-08-27 2016-04-04 株式会社三五 内燃機関の排気熱回収装置

Also Published As

Publication number Publication date
CN116583660A (zh) 2023-08-11
JPWO2022092151A1 (enrdf_load_stackoverflow) 2022-05-05
JP7714568B2 (ja) 2025-07-29

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