Motor cooling fan with integration of diversion and air draft

The invention discloses a motor cooling fan with integration of diversion and air draft, and belongs to the technical field of motor cooling. The air draft fan is in transmission connection with a rotating shaft of a motor, a main body of the air draft fan is of a cylindrical structure, a set of fan blades are arranged on the main body, an air outlet in the front end of the air draft fan is connected with the front end of the main body of the air draft fan and coaxially arranged, and a flow guide cavity is formed between the air outlet in the front end of the air draft fan and an air inlet in the rear end of the air draft fan. The air inlet device is used for increasing the air inlet flow entering the exhaust fan. According to the motor, the exhaust fan is adopted, hot air in the motor is extracted to achieve the purpose of exchanging heat with external cold air, backflow is not prone to being generated in the exhaust mode through the arranged through holes, and the heat exchange efficiency of the motor is im