| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an evaporator which prevents increase in pressure loss of coolant caused by excessive coolant flow amount flowing into heat exchange parts having a small cross-sectional area of a coolant flow channel, prevents reduction of heat exchange performance caused by only an excessively-small coolant flow amount flowing into the heat exchange parts having a large cross-sectional area of a coolant flow channel, and has excellent heat exchange performance.SOLUTION: There is provided an evaporator in which a plurality of first heat exchange parts and second heat exchange parts which perform heat exchange between coolant and air are arranged along air flow, coolant flows sequentially through the first heat exchange parts and the second heat exchange parts, and a cross-sectional area of a coolant flow channel of the first heat exchange parts is different from a cross-sectional area of a coolant flow channel of the second heat exchange parts. The evaporator is provided with a bypass flow channel 40 which bypasses the second heat exchange parts having a small cross-sectional area of a coolant flow channel and allows a part of coolant to flow into the first heat exchange parts having a large cross-sectional area of a coolant flow channel.</p> |
