using devices responsive to thermal changes or to thermal expansion of a medium

Full Title

Systems for controlling combustion (regulating fuel supply F23N1/00, regulating air supply or draught F23N3/00) > using devices responsive to thermal changes or to thermal expansion of a medium

Child Classifications

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• F23N 5/022
• F23N 5/025
• F23N 5/027
• F23N 5/04 using bimetallic elements
• F23N 5/06 using bellows; using diaphragms
• F23N 5/08 using light-sensitive elements
• F23N 5/10 using thermocouples
• F23N 5/12 using ionisation-sensitive elements, i.e. flame rods
• F23N 5/14 using thermo-sensitive resistors