for controlling air flow rate or air velocity

Full Title

Control or safety arrangements > Control systems characterised by their outputs; Constructional details thereof > for controlling the supply of treated air, e.g. its pressure > for controlling air flow rate or air velocity

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

HEATING; RANGES; VENTILATING

Subclass:

AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING

Child Classifications

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• F24F 11/75 for maintaining constant air flow rate or air velocity
• F24F 11/755 for cyclical variation of air flow rate or air velocity
• F24F 11/76 by means responsive to temperature, e.g. bimetal springs
• F24F 11/77 by controlling the speed of ventilators