Stoves and furnaces – Stoves – Cooking
Patent
1974-08-29
1976-08-17
O'Dea, William F.
Stoves and furnaces
Stoves
Cooking
98 79, 126307A, F23L 1700
Patent
active
039747573
ABSTRACT:
A down-draught deflector - draught interrupter is described having a tube of circular or rectangular cross-section, an internal baffle element for laterally deflecting down-draught gases and peripheral escape openings for such gases. The tube has a substantially constant diameter and is provided in one end portion (upstream end portion) with an annular combustion gas deflector for deflecting combustion gases towards the tube axis and defines a gas flow path which at the position of its smallest cross-section has a diameter of 0.3-0.9 times the internal diameter of the tube.
The baffle element occupies within the tube a position wholly or mainly downstream with respect to said position of smallest flow-path cross-section and has a dimension in a plane normal to the tube axis of 0.2-0.9 times the internal diameter of the tube. The apertures in the tube wall are located so as to be at least in part opposite the baffle element. Between the baffle element and the tube are disposed radial walls in positions such as to prevent air entering the tube through one aperture from flowing directly out of the tube via another aperture.
REFERENCES:
patent: 1856478 (1932-05-01), Greenberg
De Vries Hilbert
Flendrig Hubertus A.
Van Baasbank Pieter
Joyce Harold
N.V. Nederlandse Gasunie
O'Dea William F.
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