| 摘要 |
A heat exchanger having a pair of header pipes each of which includes a U-shaped wall and a front wall connected thereto to define a hollow portion. The front wall has a plurality of arc-shaped portions and plane portions each of which is disposed between adjacent arc-shaped portions in the longitudinal direction of the header pipe. Each of the plane portions are provided with an elongated hole therethrough. A plurality of fluid tubes are disposed between the header pipes in fluid communication therewith via the elongated holes. A plurality of corrugated fins are disposed between the opposed outer surfaces of the fluid tubes. Thus, the pressure loss of refrigerant in the heat exchanger is very low.
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