Patent ID: 7107787
Filing Date: 2006-09-19
Classification: F25B,F28D,F28F

Abstract:
1. An evaporator comprising first and second heat exchange units each comprising: wherein the first and second heat exchange units are arranged in two layers in an air flow direction; wherein the first and second heat exchange units are connected to each other so that the refrigerant flows through the first heat exchange unit and then through the second heat exchange unit; wherein the first heat exchange unit, at the inlet side of the evaporator, has at least two flow paths that comprise: wherein the second heat exchange unit, at the outlet side of the evaporator, has at least two flow paths that comprise: wherein, in the first heat exchange unit, the number of heat exchange passages in the first ascending path in which the refrigerant ascends is less than the number of heat exchange passages in the first descending path in which the refrigerant descends; and wherein, in the second heat exchange unit, the number of heat exchange passages in a most downstream path is greater than the number of heat exchange passages in a path immediately upstream of the most downstream path.