| 摘要 |
A fan has an electronically commutated external-rotor motor serving to drive it. The motor has an internal stator (20) having a stator lamination stack (64) and a winding arrangement (66; 164, 166, 168, 170) associated with said stack. The internal stator has a central opening (149) for journaling a shaft (42). The fan further has a permanent-magnet rotor (28) separated from the internal stator (20) by a magnetically effective air gap (99), which rotor is equipped on its outer side with fan blades (32) and comprises a shaft (42) journalled in the central opening (149) of the internal stator (20). Also provided is a plastic coating (56, 58) that extends into the central opening (149) of the internal stator (20) and forms there a bearing tube for the reception of bearing elements (48, 50) for journaling the shaft (42); also a wall element (62), implemented integrally with said plastic coating (56, 58), for a cavity (108) for the reception of electrical components (112) of the motor, which wall element (62) is provided on the side of the stator lamination stack (64) facing away from the rotor (28); and a fan housing (24) which is connected integrally, by means of connecting elements (134, 136), to the wall element (62) of the cavity (108) and which forms, together with the rotor (28), an air passage conduit (142) into which the fan blades (32) project. |
