Gas boiler, particularly for central heating

Details Gas boiler, particularly for central heating Gas boiler, particularly for central heating

1976-06-07

1977-10-25

Sprague, Kenneth W.

Liquid heaters and vaporizers

Water tube

Wall structure

122367C, 431157, F22B 1500, F22B 3710, F23L 1700

Patent

active

040551520

ABSTRACT:
Gas-burning boilers have in a chamber a plurality of finned heat-exchange tubes arranged around a central gas burner which is substantially of the same length as the finned tubes. An extraction fan draws gases from the chamber such that the chamber works under sub-atmospheric pressure which is preferably 12 mm water column or more below atmospheric.
Baffles provide that hot gases must pass over the heat-exchange tubes as they go from the burner to the fan. A self-operating pressure regulator may be provided for the chamber, and various advantages constructions of burner are disclosed which give silent and evenly distributed burning of the gases. The burner is arranged on a horizontal axis and so as to be withdrawable as a unit from the chamber without affecting the heat-exchanger tubes or baffle arrangements.

REFERENCES:
patent: 3302684 (1967-02-01), Banko
patent: 3315646 (1967-04-01), Witten, Jr.
patent: 3701340 (1972-10-01), Miller
patent: 3765823 (1973-10-01), Kawabata et al.
patent: 3895608 (1975-07-01), Sakhuja

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