Patent ID: 7726389

Claim:
An evaporator comprising: a plurality of heat exchange tubes extending vertically and arranged in rows spaced apart from each other in a front-rear direction, wherein a drainage acceleration member extending vertically is disposed between the adjacent front and rear heat exchange tubes, a drain channel is formed between the front heat exchange tube and the drainage acceleration member and between the rear heat exchange tube and the drainage acceleration member, the heat exchange tubes are flat and are arranged such that a width direction thereof coincides with the front-rear direction, the thickness of the drainage acceleration member as measured in the left-right direction is equal to the thickness of the heat exchange tube as measured in the left-right direction, outer surfaces of end walls of the front and rear heat exchange tubes in opposition to the drainage acceleration member have one of an arcuate horizontal cross section and a V-shaped horizontal cross section, and front and rear end surfaces of the drainage acceleration member have one of an arcuate horizontal cross section and a V-shaped horizontal cross section.