Patent ID: 8661845

Claim:
A heat exchanger comprising: a heat exchanging section that performs heat exchange between a refrigerant and a cooling medium; and a passage section having a first passage and a second passage for supplying the refrigerant to the heat exchanging section and a supply passage for supplying the refrigerant to the first passage and the second passage, wherein the passage section has a distribution surface defining an end of the supply passage and crossing an axis of the supply passage, the first passage and the second passage have a first opening portion and a second opening portion in the distribution surface, respectively, the distribution surface is disposed such that the refrigerant flowing in the supply passage is distributed into the first passage and the second passage through the first opening portion and the second opening portion; and a minimum first distance greater than zero between an opening edge of the first opening portion and an inner surface of the supply passage is equal to a minimum second distance greater than zero between an opening edge of the second opening portion and the inner surface of the supply passage, the inner surface extending parallel to the axis of the supply passage.