Chimney draft inducer

Details Chimney draft inducer Chimney draft inducer

1998-02-27

1999-02-09

Joyce, Harold

Ventilation

Chimney or stack

Chimneytop or stacktop structure

F23L 1702

Patent

active

058686150

ABSTRACT:
A chimney draft inducer installed on a chimney flue having a feed tube extending from the chimney flue with a plurality of vortex stabilizers extending radially from the feed tube to a cylindrical negative pressure plenum member forming a plurality of quasi-venturi chambers therebetween with a conical member positioned above the chimney flue in contact with the vortex stabilizers having an opening between such conical member and feed tube, the conical member having a plurality of arches formed in its bottom, each arch coming to a pointed tip with such pointed tips positioned within each of the quasi-venturi chambers such that air passing down the conical member speeds up when passing by the pointed tips, forming dual air vortexes of low pressure to provide a suction at the chimney flue opening to improve the draft of the chimney.

REFERENCES:
patent: 297972 (1884-05-01), Day
patent: 1284427 (1918-11-01), Moyer
patent: 1326523 (1919-12-01), Merrill
patent: 1557852 (1925-10-01), Lauerman
patent: 2401902 (1946-06-01), Brown et al.
patent: 2753786 (1956-07-01), White
patent: 3087409 (1963-04-01), Carr

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