| 摘要 |
A heat exchanger is provided to reduce an inner diameter of a header for reducing an entire weight and simplify insertion of heating fins between tubes. A heat exchanger includes a pair of first and second header pipes(100,200) facing each other and formed with refrigerant paths(101,201) inside. A plurality of serpentine tubes(300) folded at least by twice in air flow direction, have both ends(301,302) connected to the first and second header pipes. The tubes are disposed in the vertical direction of the first and second header pipes. Heating fins(400) are disposed between the tubes. The ends of the tubes have circular sections, so that inner diameters of the header pipes are reduced in the range for standing refrigerant pressure. |
