Connection between a cooled double-wall pipe and an uncooled...

Details Connection between a cooled double-wall pipe and an uncooled... Connection between a cooled double-wall pipe and an uncooled...

2007-10-30

2007-10-30

Leo, Leonard R (Department: 3744)

Heat exchange

Non-communicating coaxial enclosures

C165S178000, C285S123150

Reexamination Certificate

active

10872447

ABSTRACT:
A connection between an uncooled pipe and a cooled double-wall pipe with between the walls a hollow space run through by cooling fluid let into the hollow space and taken from the hollow space through side passages connected to cooling fluid inlet and outlet ducts and including a connection zone with longitudinal cross section generally in fork form to have single tubular end connected to the uncooled pipe and an opposite double-wall tubular end to which are connected the corresponding walls of the cooled double-wall pipe so that the fork bottom constitutes a terminal closing of the hollow space and a side passage is made opposite the connection and a portion thereof nearest the uncooled pipe is almost at the height of the fork bottom. A double-pipe heat exchanger includes such a connection.

REFERENCES:
patent: 3934618 (1976-01-01), Henderson
patent: 4437513 (1984-03-01), Castiglioni et al.
patent: 4648355 (1987-03-01), Bekedam
patent: 4778002 (1988-10-01), Allgauer et al.
patent: 4862955 (1989-09-01), Itakura
patent: 5097898 (1992-03-01), Verkaart
patent: 5287913 (1994-02-01), Dunning et al.
patent: 5579831 (1996-12-01), Brucher
patent: 5690168 (1997-11-01), Cizmar et al.
patent: 5740857 (1998-04-01), Thompson et al.

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