| 摘要 |
PURPOSE: To improve the economy with size reduction and to provide stable cooling capacity by driving a cooling motor by a predetermined frequency and predetermined voltage power source output generated by a cooling power source from an AC power source. CONSTITUTION: An inverter circuit converts three-phase AC power 1 to DC by a three-phase rectifier 2, smoothes it by a smoothing capacitor 3, and removes the ripple to generate a stable DC power. On the other hand, the AC output from the two phases of the phases of the power 1 is converted to DC by a fan driving rectifier 11, further smoothed by a smoothing capacitor 13 to stable DC having no ripple, and supplied to a fan driving inverter 14. The inverter 14 inverts the DC converted by the rectifier 11 to three-phase AC, and supplied to a cooling motor 8. Thus, the output of the motor 8 is stabilized, and an inverter cooler having stable cooling capacity is obtained. |
