| 主权项 |
1. A heat exchanger, in which
a first plate having a pair of first communication holes and a pair of second communication holes, and a second plate having a pair of first communication holes and a pair of second communication holes are alternately laminated to alternately form, between the first plate and the second plate adjacent to each other, a first coolant flow path in which a first coolant flows and a second coolant flow path in which a second coolant flows; each of the first communication holes is opened, and each of the second communication holes is closed, to the first coolant flow path; each of the second communication holes is opened, and each of the first communication holes is closed, to the second coolant flow path; the first coolant having a pressure higher than the second coolant flows into the first coolant flow path from one side of the first communication holes, and the first coolant that has passed through the first coolant flow path flows out of the other side of the first communication holes; and the second coolant having a pressure lower than the first coolant flows into the second coolant flow path from one side of the second communication holes, and the second coolant that has passed through the second coolant flow path flows out of the other side of the second communication holes, wherein a first spacer is interposed around each of the first communication holes within the first coolant flow path, and a second spacer is interposed within the second coolant flow path and at a position corresponding to a periphery of each of the first communication holes. |
