| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a variable speed pump device, formed in a compact manner, free from occurrence of dew condensation, small in burden of a cost, and capable of cooling an inverter device. SOLUTION: An electric motor 5 is provided to effect cooling by the flow of low temperature air at the periphery of a pump part 4 through a casing. A radiation plate 23 is arranged at the periphery of the electric motor 5 so as to make contact with a flow of cooling air generated around the electric motor 5, and an inverter device 18 is arranged. By using cooled air at the periphery of the pump part 4, the radiation plate 23 of an inverter device 18 is cooled.</p> |
