Patent ID: 7841541

Claim:
A fan having at least one sensor ( 86 ; 186 ) for sensing at least one value of the air that flows through the fan ( 20 ; 120 ), said fan comprising: a fan housing ( 22 , 24 ; 122 , 124 ) having an air inlet opening ( 58 ; 158 ) and an air outlet opening ( 60 ; 160 ); an electronically commutated external-rotor motor, arranged in that fan housing ( 22 , 24 ; 122 , 124 ), which motor has an internal stator ( 30 ; 130 ) and an external rotor ( 46 ; 146 ); a fan wheel ( 56 ; 156 ) coupled to the external rotor ( 46 ; 146 ), serving to pull air in through said air inlet opening ( 58 ; 158 ) and to exhaust said air through said air outlet opening ( 60 ; 160 ); a circuit board having a first portion ( 66 , 88 ; 188 ) and having conductors ( 82 , 84 : 182 ′, 182 ″) arranged on that first portion, said first portion ( 66 , 88 ; 188 ) having an outer portion ( 66 ; 185 ) located outside of the air inlet opening and a support part ( 88 ; 188 ) extending from the outer portion ( 66 ; 185 ) into the region of the air inlet opening ( 58 ; 158 ), said conductors ( 82 , 84 ; 182 ′, 182 ″) extending from the outer portion to the support part ( 88 ; 188 ) and said sensor ( 86 ; 186 ) being supported by said support part ( 88 ; 188 ) and being connected to the conductors ( 82 , 84 ; 182 ′, 182 ″).