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US 4,726,323 AGranted
Solid fuel fired vapor generator
AssigneeSulzer Brothers Limited
InventorKarl Rees
Life of this patent
Estimating the term…
Abstract
The vapor generator is formed with a flue of rectangular cross section and a funnel of four trapezoidal walls which define a rectangular opening. The tubes of the funnel and flue extend helically and connect each to the other. The funnel tubes in the larger trapezoidal walls have transition portions which are disposed at greater angles to form a smooth transition into the funnel tubes of the smaller trapezoidal walls.
Claims11
A solid fuel fired vapor generator comprising
- a vertical flue having a rectangular cross-section, said flue including a plurality of working medium-carrying tubes defining four vertical walls;
- and
- a funnel disposed at a bottom end of said flue and including a plurality of helically extending tubes connected to said flue tubes to convey working medium therebetween and defining four inclined plane trapezoidal walls and a rectangular outlet opening at a bottom end of said plane walls.
Dependencies are inferred from the claim text.