SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ( firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); 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

Child Classifications

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• F23L 1/00 Passages or apertures for delivering primary air for combustion (baffles or deflectors in air inlets F23M9/02)
• F23L 11/00 Arrangements of valves or dampers after the fire
• F23L 13/00 Construction of valves or dampers for controlling air supply or draught
• F23L 15/00 Heating of air supplied for combustion
• F23L 17/00 Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
• F23L 2700/00 Installations for increasing draught in chimneys; Specific draught control devices for locomotives
• F23L 2900/00 Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
• F23L 3/00 Arrangements of valves or dampers before the fire
• F23L 5/00 Blast-producing apparatus before the fire
• F23L 7/00 Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
• F23L 9/00 Passages or apertures for delivering secondary air for completing combustion of fuel (baffles or deflectors in air inlets F23M9/02)
• F23L 99/00 Subject matter not provided for in other groups of this subclass