| 摘要 |
A motorized treadmill ( 10 ) having an auxiliary cooling fan ( 34 ) electronically controlled to provide additional cooling for both the motor ( 10 ) and the motor electronic control system ( 36 ). The auxiliary fan ( 34 ) is located such that the air circulated by the fan will flow over the motor and electronic control system. The auxiliary fan, powered independently of the output shaft of the motor, provides additional cooling to help maintain a constant belt speed while the treadmill is being operated at low speeds.
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