Motor applicable to large-sized water pumps and having good cooling structure

• Main Authors: CHEN BIN, XU RONGJUN, GU YUZHONG, HUANG XUEJUN, DONG MIANJIE, YU BISHENG, MA JINXING
• Format: Patent
• Language: English
• Published: 24.06.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention discloses a motor applicable to large-sized water pumps and having a good cooling structure. The motor comprises a shell, a stator, a rotor and a rotor shaft; the stator is fixedly connected within an inner cavity of the shell; the rotor is fixedly connected to the rotor shaft; the rotor shaft is connected to the shell through a bearing; the rotor faces the stator; the rotor and the stator divide the shell into an upper cavity in the upper portion of the shell and a lower cavity in the lower portion of the shell; a first air passage is provided between the rotor and the rotor shaft; the upper cavity and the lower cavity are communicated with each other through the first air passage; a second air passage allowing the upper cavity and the lower cavity to be communicated with each other is further provided between the upper cavity and the lower cavity; the motor further comprises an axial-flow fan fixedly connected to the rotor shaft. The motor has good cooling performance and has fewer burnouts caused by poor cooling performance.