Steam boiler

Details Steam boiler Steam boiler

2008-01-04

2010-11-02

Wilson, Gregory A (Department: 3749)

Liquid heaters and vaporizers

Indirectly heated

Separate fluid

C122S018100, C165S134100

Reexamination Certificate

active

07823544

ABSTRACT:
A steam boiler (15) comprising a fuel burning device (16) disposed in a combustion chamber and adapted to burn a fuel to form combustion gases (19), a passage (30) extending between a water inlet (20) and a steam outlet (23), the passage having a water space (31) and a steam space (32), a flue passage (33) extending between the combustion chamber and a flue outlet (24) and having a gas heat transfer space (34), a heat exchange element (43) between the gas heat transfer space and the water and steam spaces, the heat exchange element having a gas-side surface (35) that absorbs heat from the combustion gases and an opposed water-side surface (38) that radiates heat, the water-side surface having a first portion (39) adjacent to the water space and a second portion (40) adjacent to the steam space, the gas-side surface having a first portion (36) opposite the water-side first portion and a second portion (37) opposite the water-side second portion, the water-side first portion having a surface area and the water side second portion having a surface area, the gas-side first portion having a surface area and the gas-side second portion having a surface area, and a heat shield (41, 42, 45, 48) covering at least some of the surface area of the gas-side second portion. The surface area of the gas-side first portion may be greater than the surface area of the water-side first portion and the surface area of the gas-side second portion may be less than or approximately equal to the surface area of the water-side second portion.

REFERENCES:
patent: 3850146 (1974-11-01), Graham et al.
patent: 4222350 (1980-09-01), Pompei et al.
patent: 4356794 (1982-11-01), Bouman et al.
patent: 4499859 (1985-02-01), Nishiguchi et al.
patent: 4793800 (1988-12-01), Vallett et al.
patent: 5259343 (1993-11-01), Cone, II et al.
patent: 5365888 (1994-11-01), Aronov
patent: 5473884 (1995-12-01), Sutton et al.
patent: 5485879 (1996-01-01), Lannes
patent: 5626187 (1997-05-01), Nilsson
patent: 5809913 (1998-09-01), Kramer et al.
patent: 6076518 (2000-06-01), Klouda et al.
patent: 6082444 (2000-07-01), Harada et al.
patent: 6604572 (2003-08-01), Kawamoto

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