Maginot, Moore & Beck LLP
Air pre-cleaning assembly and electric tool having same
An air pre-cleaning assembly includes a motor that has a stator and a rotor shaft assembly configured with a fan. The motor is disposed at the upstream of the fan, and rotation of the fan is configured to yield an air flow passing through the motor. A cyclone separating element on the upstream path of the air flow on the motor includes an air inlet, a separating chamber, a dust collecting chamber, and an air outlet. The separating chamber is communicated with the air inlet. The dust collecting chamber is communicated with the separating chamber and located at its outer periphery. The air outlet is communicated with the separating chamber and located at its inner periphery. The motor is located at the downstream of the air outlet. The cyclone separating element allows clean air filtered by cyclone filtering to pass through the motor via the air outlet.
Bosch Power Tools (China) Co., Ltd. Robert Bosch GmbH
B B H B
B25F B01D H02K B04C
inventional inventional inventional additional
Jiguo Weiwei Xing
Liu Lv Wu