F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
Echangeurs de chaleur a surfaces d'echange plissee et systemes de prelevement des calories evacuees par les fumees sortant des chambres de combustion