| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchanger capable of improving melt-water drainage performance without degrading heat exchange efficiency. ! SOLUTION: A heat exchanger 10 of the present invention includes: a plurality of tubes 21 in each of which a refrigerant channel 21a in which refrigerant flows is formed, the tubes 21 being provided in a width direction X; and a plurality of corrugated fins 22 each including a plurality of heat transfer walls 23 ranging from one adjacent tube 21 to the other adjacent tube 21 and provided in an extension direction of the tubes 21, the fins 22 being capable of exchanging heat with the tubes 21. Each heat transfer wall 23 includes a protrusion piece 221 protruding windward of a windward end portion of each tube 21, and the protrusion piece 221 includes a coupling portion 223; and a pair of drainage portions 224 and 225 formed on both sides in a width direction of the coupling portion 223, respectively, and inclined downward at a predetermined angle with respect t |
