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1. (WO2018202312) ELECTRIC EXTRACTOR FAN

Pub. No.:    WO/2018/202312    International Application No.:    PCT/EP2017/060767
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 06 01:59:59 CEST 2017
IPC: F24F 7/007
F24F 11/00
F04D 25/06
F24F 13/20
F24F 110/20
F24F 110/50
Applicants: FRESH AB
Inventors: HÅRD, Per-Ola
Title: ELECTRIC EXTRACTOR FAN
Abstract:
The invention concerns an electric extractor fan(1) comprising a housing (2), in which an electric motor is installed to expel air from a room (4) by means of a fan wheel (5). The electric extractor fan (1) comprises a humidity sensor installed in said housing (2) and adapted to start the electric motor when a humidity level, detected by means of the humidity sensor, exceeds a set level. The electric extractor fan (1) does also comprise a gas sensor installed in said housing (2) and adapted to start the electric motor when level of a gaseous air contaminant, especially methane, detected by means of the gas sensor, exceeds a set level.