Wind power generation unit, electric motor, and airflow delivery device for electric motor air gap

A motor, comprising:

• a stator;
• a rotor;
• a rotating shaft;
• and
• an airflow delivery device for an air gap formed between the rotor and the stator of the motor and comprising an annular air distribution chamber, the annular air distribution chamber comprising an air distribution chamber main body and an air intake nozzle which are located at one end of the air gap in an axial direction of the motor,
• wherein:
• the annular air distribution chamber is provided with a delivery port facing the air gap and configured to deliver hot airflow or cold airflow to the air gap;
• the air intake nozzle is configured between the air distribution chamber main body and the air gap to face the air gap at the delivery port and to have a flow area being gradually reduced along an air intake direction;
• the rotor is an inner rotor;
• the motor is provided with a delivery flow channel which penetrates a side wall of the rotating shaft and the rotor to communicate an inner cavity of the rotating shaft and the air gap;
• and
• the cold airflow or the hot airflow generated by a vortex separator is transported into the inner cavity of the rotating shaft and enters the delivery flow channel.

A motor, comprising:

• a stator;
• a rotor;
• a rotating shaft;
• and
• an airflow delivery device for an air gap formed between the rotor and the stator of the motor, comprising:
• a first annular air distribution chamber comprising an air distribution chamber main body and an air intake nozzle which are located at one end of the air gap in an axial direction of the motor;
• and
• a second annular air distribution chamber located at another end of the air gap, wherein:
• the first annular air distribution chamber is provided with a delivery port facing the air gap and configured to deliver hot airflow or cold airflow to the air gap;
• the air intake nozzle is configured between the air distribution chamber main body and the air gap to face the air gap at the delivery port and to have a flow area being gradually reduced along an air intake direction;
• the rotor is an inner rotor;
• the motor is provided with at least one return flow channel, and the at least one return flow channel penetrates a side wall of the rotating shaft and the rotor to communicate an inner cavity of the rotating shaft and a middle of the air gap;
• and
• the cold airflow or the hot airflow flows to the air gap through the first and second annular air distribution chambers, flows out of the air gap through the at least one return flow channel, and enters the inner cavity of the rotating shaft.