Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically

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 21/02 built-up from substantially-straight water tubes
• F22B 21/22 built-up from water tubes of form other than straight or substantially straight
• F22B 21/34 built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
• F22B 21/4 built-up from water tubes arranged in a comparatively long vertical shaft, i.e. tower boilers