| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of achieving a sufficiently high cooling effect even if refrigerant having a property that a state can be easily converted from liquid to gas or from gas to liquid is used.SOLUTION: A heat exchanger 1 cools an electric component that supplies electric power to an electric drive source for driving a vehicle to travel, by cooling water. To this end, the heat exchanger 1 comprises: a core part 2 causing heat exchange between the cooling water and refrigerant whose state can be converted from gas to liquid or from liquid to gas by alternately stacking a plurality of plates 21 and 22, and by alternately forming cooling chambers 23 in which the cooling water flows and refrigerant chambers 24 in which the refrigerant flows between the plates 21 and 22; a penetration portion 9a extending vertically at a position of a central portion of this core part 2; and two lid members 3 and 4 that cover upper and lower end portions of the core part 2, respectively. The refrigerant is made to flow from a portion of the upper lid member 3 outward of the penetration portion 9a into the core part 2 and is discharged from the penetration portion 9a against the gravitational force. The cooling water is made to flow in/out from another outer portion of the upper lid member 3 via the core part 2 and to flow out against the gravitational force.</p> |
