HEAT EXCHANGER

PROBLEM TO BE SOLVED: To provide an EGR cooler which increases a heat transfer area when heat of exhaust gas is transferred to cooling water and, thereby, provides satisfactory heat transfer efficiency.SOLUTION: An EGR cooler 1 includes a first pipe body 5 made of metal arranged in a casing 2 and a...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAMURA KATSUMI, FUKAYA TAKUMI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEAT EXCHANGE IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an EGR cooler which increases a heat transfer area when heat of exhaust gas is transferred to cooling water and, thereby, provides satisfactory heat transfer efficiency.SOLUTION: An EGR cooler 1 includes a first pipe body 5 made of metal arranged in a casing 2 and a second pipe body 6 made of metal arranged on an inner side of the first pipe body 5. Exhaust gas G is circulated through a first fluid passage 3 in the first pipe body 5 and, at the same time, cooling water W is circulated through a second fluid passage 4 in the second pipe body 6 and composed of a space 15 communicated with the second pipe body. The exhaust gas G which is circulated through the interior of the first fluid passage 3 comes into contact with not only an inner surface of the first pipe body 5 but also an outer surface of the second pipe body 6 and a fin 25 and heat of the exhaust gas G is transferred to the cooling water W via them.