IPC Main Group
F22B 27/00 Instantaneous or flash steam boilers
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- STEAM GENERATION
- Subclass:
- METHODS OF STEAM GENERATION; STEAM BOILERS
5 direct subcodes
Child Classifications
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- F22B 27/02 built-up from fire tubes
- F22B 27/04 built-up from water tubes
- F22B 27/12 built-up from rotary heat-exchange elements, e.g. from tube assemblies
- F22B 27/14 built-up from heat-exchange elements arranged within a confined chamber having heat-retaining walls
- F22B 27/16 involving spray nozzles for sprinkling or injecting water particles on to or into hot heat-exchange elements, e.g. into tubes