Patent ID: 8967983
Filing Date: 2015-03-03
Classification: F04D,Y10T

Abstract:
1. A kit for construction of an axial fan system in a duct, comprising: an essentially circular-cylindrical blower pipe configured about a centre axis, including a fan rotor that is configured within the blower pipe, the fan rotor: (1) having a rotor hub that essentially coincides with the centre axis of the blower pipe, and (2) being connected to and extending from a drive shaft in a motor drive; a motor case that is provided behind the fan rotor for mounting and retaining the motor drive, said motor case including: at least one small motor drive and at least one large motor drive, the at least one small motor drive and the at least one large motor drive being both configured for mounting on a mounting fitting, and a largest dimension of the at least one small motor drive measured at right angles to the centre axis of the drive shaft is smaller than a corresponding largest dimension on the at least one large motor drive, wherein: