| 摘要 |
PURPOSE: To provide a power converter having the excellent vehicle mounting property, wherein the radiator means can be made compact. CONSTITUTION: A converter circuit 5 comprising a plurality of switching elements 11 constituting an inverter circuit, a control circuit 12 for controlling the inverter, a smoothing capacitor 13 and the like are contained and arranged in a containing case 14. In the containing case 14, a refrigerant tank 31 for receiving the heat of a plurality of the switching elements 11 is arranged. A refrigerant of low boiling point is sealed in the refrigerant tank 31. Over the upper side of the refrigerant tank 31 stands a refrigerant radiator 32 which cools and liquefies the refrigerant vaporized in the refrigerant tank 31 by the vehicle running blown through an opening part 4 at the front part of the vehicle. Thus, the heat generated in the switching elements 11 is cooled by a boiling/ cooling device 6 comprising the refrigerant tank 31 and the refrigerant radiator 32. This boiling/cooling device 6 is compact in comparison with a conventional heat radiating means (cooling fins for air cooling) and has the excellent vehicle mounting property. |
