Exhaust heat exchanger

Heat exchange – Casing or tank enclosed conduit assembly

Reexamination Certificate

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Details

C165S052000, C165S158000, C123S568120

Reexamination Certificate

active

06976530

ABSTRACT:
A profile of the casing20is formed into a circular pipe shape, and the two gas coolers10a, 10bare integrated into one body so that the longitudinal directions of the respective gas coolers can be substantially parallel with each other. Due to the above structure, it is possible to make the coolant flow smoothly in the casing20and stagnation of the coolant seldom occurs. Accordingly, as boiling of the coolant can be suppressed, it is possible to prevent the heat transfer coefficient from being remarkably deteriorated. Further, it is possible to suppress the generation of cracks, in the tubes11, which are caused by heat stress.

REFERENCES:
patent: 4993485 (1991-02-01), Gorman
patent: 6161528 (2000-12-01), Akao et al.
patent: 6595274 (2003-07-01), Hayashi et al.
patent: 3212913 (1983-10-01), None
patent: 101 02 483 (2002-08-01), None
patent: 2 830 929 (2002-11-01), None
patent: 11-241891 (1998-02-01), None
patent: 11-237192 (1999-08-01), None
patent: 11-303688 (1999-11-01), None
patent: 2001-108390 (2001-04-01), None
patent: WO 03/25380 (2003-03-01), None
Patent Abstracts of Japan No. 2001-108390 dated Apr. 20, 2001.

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