F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
F23L 17/08 (2006.01) F23L 17/02 (2006.01) F23L 17/12 (2006.01)
Patent
CA 2240247
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.
Macrae & Co.
Page Calvin A.
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