CN103742298A - Internal combustion engine exhaust gas recirculation cooler - Google Patents
Internal combustion engine exhaust gas recirculation cooler Download PDFInfo
- Publication number
- CN103742298A CN103742298A CN201310720643.9A CN201310720643A CN103742298A CN 103742298 A CN103742298 A CN 103742298A CN 201310720643 A CN201310720643 A CN 201310720643A CN 103742298 A CN103742298 A CN 103742298A
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- Prior art keywords
- exhaust gas
- cooler
- heat exchange
- tube
- gas recirculation
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- Y02T10/121—
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本发明涉及一种内燃机废气再循环用冷却器，包括壳体、换热管、管板及流体的进出口，特征在于换热管的内部和外部都有翅片。由于换热管的内部和外部都有翅片，增加了传热面积，提高了换热效率。
The invention relates to a cooler for exhaust gas recirculation of an internal combustion engine, which includes a shell, a heat exchange tube, a tube plate and a fluid inlet and outlet, and is characterized in that the inside and outside of the heat exchange tube have fins. Since the heat exchange tube has fins inside and outside, the heat transfer area is increased and the heat exchange efficiency is improved.
Description
Technical field
The present invention relates to a kind of engine exhaust gas recirculation cooler, belong to engine exhaust gas recirculating technique field.
Background technique
EGR technology is the effective ways that fall low NOX emission.High-temperature oxygen-enriched is the main build environment of NOX, and EGR technology can effectively reduce oxygen concentration and the interior maximum combustion temperature of cylinder in air inlet, the generation of restraint NO X.And adopting cooling EGR technology for NOX, the discharge of PM and the consumption rate of fuel oil have active influence.
Cooler for recycled exhaust gas want cooling to as if the high-temp waste gas of recirculation, this just requires cooler for recycled exhaust gas to use as far as possible little film-cooled heat but to realize larger exchange heat as far as possible, to promote as far as possible the cooling effectiveness of cooler for recycled exhaust gas simultaneously, also will take into account and adapt to the feature that gasoline engine vibration is larger.
So cooler for recycled exhaust gas must meet following condition: the first, firmly high temperature and the corrosion that cooler need to stand; The second, need cooler volume little, can have good heat radiation, Pressure Drop will reduce to minimum, be not easy to be plugged.Consider above-mentioned 2 factors, by the cooler that cooler for recycled exhaust gas was used, had following two kinds now: strip-fin oil cooler and shell and tube cooler.
Strip-fin oil cooler, heat transfer efficiency is high, compact structure, but manufacturing process complexity, easily stop up, clean maintenance very difficult, be unsuitable for the heat exchange of automobile exhaust gas.
Shell and tube cooler is simple in structure, easy to process, and the cleaning ratio of wall is easier to, and go for the working environment of various more complicated, but shell and tube cooler heat exchange area is less, and heat exchange efficiency is lower.
Summary of the invention
The object of the invention is for the lower problem of existing shell and tube cooler efficiency, the shell and tube cooler that a kind of heat exchange area is larger, heat exchange efficiency is higher is provided.
Technological scheme of the present invention is as follows:
A kind of engine exhaust gas recirculation cooler, comprises the import and export of housing, heat exchanging tube, tube sheet and fluid, it is characterized in that the inside and outside fin that is all provided with of heat exchanging tube.
As preferred version, above-mentioned engine exhaust gas recirculation cooler, the inside and outside fin of heat exchanging tube is center radiation shape and is arranged on tube wall.
As further preferred version, the fin of heat exchanging tube inside is 3-8, and the fin of heat exchanging tube outside is 3-16.
Beneficial effect is: because heat exchanging tube is inside and outside, have fin, increased heat transfer area, improved heat exchange efficiency.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of cooler for engine exhaust gas recirculation.
The sectional view that accompanying drawing 2 is heat exchanging tube of the present invention.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, engine exhaust gas recirculation cooler, comprises the import and export 4 of housing 1, heat exchanging tube 2, tube sheet 3 and fluid, and during work, waste gas enters from one end, by heat exchanging tube, from the other end, flows out; Cooling medium entering from the side flow through outside heat exchange tube wall, from another side, flows out; The two carries out heat exchange on the tube wall of heat exchanging tube, and waste gas obtains cooling, to carry out recirculation, reduces the exhaust index of NOX.
The solution of the present invention feature is that the inside of heat exchanging tube 21 is provided with inner fins 22 and outside is provided with outside fin 23, and these fins are center radiation shape and are arranged on tube wall, and the fin of heat exchanging tube inside is 3-8, and the fin of heat exchanging tube outside is 3-16.
Compared with prior art, because heat exchanging tube inside, with fin, can be delivered to the heat of gas on the fin outside tube wall and pipe more fully; Fin outside pipe can contact with cooling medium more fully, thereby quickly heat is taken away.The fin of heat exchanging tube inside and outside fin are all the heat exchange areas increasing, the problem that heat exchange area is little, heat exchange efficiency is low that has overcome shell and tube cooler.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention or major character.Therefore, any change in implication and the scope suitable with claims of the present invention, all should think to be included in the scope of claims.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720643.9A CN103742298A (en) | 2013-12-24 | 2013-12-24 | Internal combustion engine exhaust gas recirculation cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720643.9A CN103742298A (en) | 2013-12-24 | 2013-12-24 | Internal combustion engine exhaust gas recirculation cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103742298A true CN103742298A (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310720643.9A Pending CN103742298A (en) | 2013-12-24 | 2013-12-24 | Internal combustion engine exhaust gas recirculation cooler |
Country Status (1)
| Country | Link |
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| CN (1) | CN103742298A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221300A (en) * | 2014-06-10 | 2016-01-06 | 丰田自动车株式会社 | For the gas pipeline of exhaust gas recirculatioon |
| CN107830636A (en) * | 2017-09-29 | 2018-03-23 | 杨建强 | A kind of self-loopa heater |
| CN109539853A (en) * | 2018-12-18 | 2019-03-29 | 中国电子科技集团公司第十六研究所 | A kind of heat exchanger tube with internal longitudinal wings structure |
| GB2571637A (en) * | 2017-01-30 | 2019-09-04 | Senior Uk Ltd | Finned coaxial cooler |
| US10995998B2 (en) | 2015-07-30 | 2021-05-04 | Senior Uk Limited | Finned coaxial cooler |
| US11029095B2 (en) | 2015-07-30 | 2021-06-08 | Senior Uk Limited | Finned coaxial cooler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1755316A (en) * | 2004-07-23 | 2006-04-05 | 臼井国际产业株式会社 | Fin, method of fabricating the same and heat exchanger tube, heat exchanger and gas cooling apparatus |
| JP2007078194A (en) * | 2005-09-09 | 2007-03-29 | Usui Kokusai Sangyo Kaisha Ltd | Heat transfer tube for heat exchanger |
| US20070261400A1 (en) * | 2004-10-07 | 2007-11-15 | Behr Gmbh & Co. Kg | Air-Cooled Exhaust Gas Heat Exchanger, in Particular Exhaust Gas Cooler for Motor Vehicles |
| CN201184247Y (en) * | 2008-04-14 | 2009-01-21 | 赵延伟 | EGR cooler for vehicle |
| EP2154352A2 (en) * | 2008-08-12 | 2010-02-17 | MAN Nutzfahrzeuge AG | Method and device for operating a multi-cylindrical combustion engine |
| CN103134376A (en) * | 2011-12-01 | 2013-06-05 | 溧阳市恒祥特钢机械制造有限公司 | Heat transfer tube |
| CN103397957A (en) * | 2013-07-12 | 2013-11-20 | 宁波路润冷却器制造有限公司 | Waste gas recycling device |
-
2013
- 2013-12-24 CN CN201310720643.9A patent/CN103742298A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1755316A (en) * | 2004-07-23 | 2006-04-05 | 臼井国际产业株式会社 | Fin, method of fabricating the same and heat exchanger tube, heat exchanger and gas cooling apparatus |
| US20070261400A1 (en) * | 2004-10-07 | 2007-11-15 | Behr Gmbh & Co. Kg | Air-Cooled Exhaust Gas Heat Exchanger, in Particular Exhaust Gas Cooler for Motor Vehicles |
| JP2007078194A (en) * | 2005-09-09 | 2007-03-29 | Usui Kokusai Sangyo Kaisha Ltd | Heat transfer tube for heat exchanger |
| CN201184247Y (en) * | 2008-04-14 | 2009-01-21 | 赵延伟 | EGR cooler for vehicle |
| EP2154352A2 (en) * | 2008-08-12 | 2010-02-17 | MAN Nutzfahrzeuge AG | Method and device for operating a multi-cylindrical combustion engine |
| CN103134376A (en) * | 2011-12-01 | 2013-06-05 | 溧阳市恒祥特钢机械制造有限公司 | Heat transfer tube |
| CN103397957A (en) * | 2013-07-12 | 2013-11-20 | 宁波路润冷却器制造有限公司 | Waste gas recycling device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221300A (en) * | 2014-06-10 | 2016-01-06 | 丰田自动车株式会社 | For the gas pipeline of exhaust gas recirculatioon |
| US10995998B2 (en) | 2015-07-30 | 2021-05-04 | Senior Uk Limited | Finned coaxial cooler |
| US11029095B2 (en) | 2015-07-30 | 2021-06-08 | Senior Uk Limited | Finned coaxial cooler |
| GB2571637A (en) * | 2017-01-30 | 2019-09-04 | Senior Uk Ltd | Finned coaxial cooler |
| GB2571637B (en) * | 2017-01-30 | 2021-01-13 | Senior Uk Ltd | Finned heat exchangers |
| CN107830636A (en) * | 2017-09-29 | 2018-03-23 | 杨建强 | A kind of self-loopa heater |
| CN107830636B (en) * | 2017-09-29 | 2024-04-02 | 杨建强 | Self-circulation heater |
| CN109539853A (en) * | 2018-12-18 | 2019-03-29 | 中国电子科技集团公司第十六研究所 | A kind of heat exchanger tube with internal longitudinal wings structure |
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Application publication date: 20140423 |