A method for extracting recreational smoke from multi-use areas has a smoke detector and control system to operate an extractor fan and ducting flap

摘要

Cigarette, cigar or pipe smoke (7) is detected by sensors (1) in a hood (2) containing a light source (12) and leading to an extraction duct (8) ventilated by a fan (9) actuated by a control system (11) which also opens a flap (10) to connect the hood to the duct.