the fuel forming a column, stack or thick layer with the combustion zone at its bottom

Child Classifications

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• F23B 50/04 the movement of combustion air and flue gases being substantially transverse to the movement of the fuel since 2006 IPC+CPC Available in IPC and CPC
• F23B 50/06 the flue gases being removed downwards through one or more openings in the fuel-supporting surface since 2006 IPC+CPC Available in IPC and CPC
• F23B 50/08 with fuel-deflecting bodies forming free combustion spaces inside the fuel layer since 2006 IPC+CPC Available in IPC and CPC
• F23B 50/10 with the combustion zone at the bottom of fuel-filled conduits ending at the surface of a fuel bed since 2006 IPC+CPC Available in IPC and CPC