Exhaust gas heat exchanger

Heat exchange – Conduit within – or conforming to – panel or wall structure – Opposed plates or shells

Reexamination Certificate

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Details

C165S158000

Reexamination Certificate

active

10189612

ABSTRACT:
A tube101is constituted by a pair of plates111a,111bwhich are fitted with each other in such a manner as to put an inner fin101bbetween the plate111aand the plate111b. Differences in level111care formed on the second plate111b, which fits inside, which differences in level each protrude inwardly by a distance equal to the thickness of the first plate111a, whereby the outer wall surface of the tube101is made substantially level thereover. A gap which is formed between the outer wall surface of the tube101and a core plate, when the tube is passed through the core plate, can be as small as possible whereby the brazing properties can be improved.

REFERENCES:
patent: 3053511 (1962-09-01), Godfrey
patent: 3165152 (1965-01-01), Jones
patent: 3907032 (1975-09-01), DeGroote et al.
patent: 4029146 (1977-06-01), Hart et al.
patent: 4125153 (1978-11-01), Stoneberg
patent: 4501321 (1985-02-01), Real et al.
patent: 4681155 (1987-07-01), Kredo
patent: 4805693 (1989-02-01), Flessate
patent: 5185925 (1993-02-01), Ryan et al.
patent: 5441105 (1995-08-01), Brummett et al.
patent: 6192977 (2001-02-01), Dey et al.
patent: 6257483 (2001-07-01), Inaba
patent: 6293337 (2001-09-01), Strahle et al.
patent: 2000-205776 (2000-07-01), None
patent: 2001-33187 (2001-02-01), None

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