GB288594A - Improvements in and relating to heating apparatus - Google Patents

Abstract

288,594. Bastain-Morley Co., (Assignees of Morley, .J. P.). April 13, 1927, [Convention date]. Flues, internal. - In a boiler, a heat exchanging element 4 comprises a unit having integral conduits for heating gases and for the water to be heated. In the example shown, the conduits are formed by deeply indented side walls symmetrically arranged, the element being mounted within a container 1c and shrouded by a casing 17a having an upward extension 17b encircling a flue 14 connected to the upper end 16 of the element. Water can enter the outer bays b, Fig. 3, past the lower end of the casing 17a and is discharged at the upper end of the extension 17b. Hot gases from a burner 8 sweep over the surface of the inner bays a, Fig. 3, and escape by the flue 14. In modifications, the indented sides of the unit 4 are of annular formation, Fig. 9, or of sinuous formation with curved surfaces and the central flue passage into which the indentations project may be straight or zig-zag. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a form of heating element, Fig. 26, in which the conduits 64 for flue gases are separate and passages 68 for water are formed between them. Instead of mounting the heating element in a large container as shown it may be mounted in a smaller casing connected by circulation pipes to a reservoir. This modification now forms the subject-matter of Specification 300,618.