| 摘要 |
PROBLEM TO BE SOLVED: To improve a heat radiating performance by enhancing coolant circulation. SOLUTION: Defined in a coolant bath made of extruded material 7 are a vapor passage 10 through which coolant flows and boils when receiving heat from an insulated gate bipolar transistor(IGBT) (heater) module, a condensate passage 11 through which condensed solution flows when cooled and liquefied by a radiator, and a heat insulating passage 12 provided between the vapor passage 10 and condensate passage 11. The heat insulating passage 12, which communicates in its lower part with the vapor passage 10 and condense passage 11 and also communicate in its upper part with the vapor passage 10, is filled with the coolant. |
