| 摘要 |
The invention relates to fan units for ventilators, in particular CPAP devices. The fan units comprise a housing, a motor equipped with a stator and a rotor, said stator being fixed to the housing, and a fan impeller, which is fixed to the rotor. According to one embodiment, the motor is situated in the intake region of the fan impeller and the housing forms an intake channel, which extends in a spiral around the motor axis and is located in such a way that the air that has been drawn in is accelerated in the rotational direction of the motor. According to another embodiment, the housing is configured in the vicinity of the fixings for the motor in such a way that said housing acts as a sprung element. In a further embodiment, the fan unit is provided with a fabric, through which the air flows after being compressed by the fan impeller. In a subsequent embodiment, an intake connection is fixed to the exterior of the housing and a soundproofing fabric is provided in the transition zone between the intake connection and an intake channel that is formed by the housing. |
