COOLED MOTOR FOR A PAPER SHREDDER

摘要

A paper shredder motor cooling assembly having a paper shredder motor coupled to a fan shaft, an enclosure surrounding the paper shredder motor and having selected input and selected output vents to control airflow to the paper shredder motor, a fan coupled to the fan shaft, communicating with the selected input vents or the selected output vents; when the paper shredder motor is operating, the rotor shaft turns the fan to generate a differential air pressure between the selected input vents and the selected output vents, removing heat from the motor. A duty cycle of greater than 15 minutes is obtained. The fan can be coupled to the motor by speed increasing gearing, attached to the cutter blade assembly, such that the fan turns faster than the motor. The fan also can be attached to the motor shaft. An input fan and an output fan can be used.

主权项

1. A paper shredder motor cooling assembly, comprising:
a paper shredder motor having a motor rotor shaft mechanically coupled to a fan shaft; an enclosure fitting over the paper shredder motor and having selected input vents and selected output vents disposed to control airflow to the paper shredder motor; a fan coupled to the fan shaft and in communication with the selected input vents or the selected output vents in the enclosure,
wherein when the paper shredder motor is operating, the motor rotor shaft turns the fan to generate a differential air pressure between the selected input vents and the selected output vents,wherein heat is removed from the motor, andwherein a duty cycle of greater than 50% is obtained thereby.