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Priority claimed from DE19681751512external-prioritypatent/DE1751512B2/de
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Publication of BE733959ApublicationCriticalpatent/BE733959A/xx
F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air above the fire