Heat exchanger, and in particular a steam generator having a...

Details Heat exchanger, and in particular a steam generator having a... Heat exchanger, and in particular a steam generator having a...

2006-02-21

2006-02-21

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Indirectly heated

Separate fluid

C122S382000

Reexamination Certificate

active

07000571

ABSTRACT:
The steam generator (1) comprises an outer casing (2) with an axis (8) that is in a vertical disposition when the heat exchanger is in service, a bundle of tubes having straight portions that are parallel to one another and to the axis (8) of the heat exchanger (1) inside the outer casing (2), at least one tube plate (4) having through holes, each receiving the end of a tube of the bundle, and at least one water chamber having a wall (6) that is circularly symmetrical about the axis (8) of the heat exchanger (1), the water chamber being fixed to the tube plate (4) at the bottom of the heat exchanger. The surface (14a) of the solid bottom (14) of the heat exchanger includes at least one central point disposed substantially on the axis of the heat exchanger (1) at a highest level relative to the set of points constituting the inside surface (14a) of the bottom (14) of the heat exchanger. The set of points constituting the inside surface (14a) of the bottom (14) is situated above a conical surface (23) having an apex point at the highest level central point of the inside surface (14a) of the bottom (14), an axis parallel to the axis (8) of the heat exchanger, and a half-angle at the apex of about 80°.

REFERENCES:
patent: 3503373 (1970-03-01), Sokolowski
patent: 3854453 (1974-12-01), Mayer et al.
patent: 4422499 (1983-12-01), Batistoni
patent: 4653435 (1987-03-01), Lebouc
patent: 4883036 (1989-11-01), Sterk
patent: 2 271 504 (1975-12-01), None
International Search Report, FA 0309742, dated Apr. 22, 2004.

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