Fire tube for a heating boiler

Details Fire tube for a heating boiler Fire tube for a heating boiler

1978-11-07

1980-07-29

Favors, Edward G.

Heat exchange

Tubular structure

Projecting internal and external heat transfer means

110326, 122149, 138 38, F28F 140

Patent

active

042146275

ABSTRACT:
A fire tube for a heating boiler comprising two metal tube halves each having a base portion and two leg portions projecting at an angle from the base portion, the tube halves being disposed relative to one another such that the terminating ends of the leg portions abut one another and are joined by welding. A plurality of substantially U-shaped elements extend longitudinally within the fire tube, each of the U-shaped elements having a base section and projecting leg sections, the base sections being welded to the base portion of one of the tube halves, the leg sections being parallel to one another and extending substantially across the width of the fire tube.

REFERENCES:
patent: 2247199 (1941-06-01), Kritzer
patent: 2378646 (1945-06-01), Manning
patent: 2930405 (1960-03-01), Welsh

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