Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

STEAM GENERATION

Subclass:

METHODS OF STEAM GENERATION; STEAM BOILERS

Child Classifications

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• F22B 7/02 without auxiliary water tubes
• F22B 7/04 with auxiliary water tubes
• F22B 7/12 with auxiliary fire tubes; Arrangement of header boxes providing for return diversion of flue gas flow
• F22B 7/14 with both auxiliary water tubes and auxiliary fire tubes
• F22B 7/16 Component parts thereof; Accessories therefor, e.g. stay-bolt connections