Patent ID: 6883596

Claim:
A heat exchanger, comprising: an upper header having a refrigerant inlet port and distributing a refrigerant introduced into the upper header through the refrigerant inlet port; a plurality of heat exchanging tubes connected at upper ends thereof to said upper header and extending in a vertical direction; a lower header connected to lower ends of said heat exchanging tubes and gathering the refrigerant flowing from the heat exchanging tubes, said lower header having a refrigerant outlet port; and a water supply unit assembled with upper portions of external surfaces of said heat exchanging tubes, and feeding water to said tubes to cause water to flow along the external surfaces of said tubes, said water supply unit comprising: a channeled body with the heat exchanging tubes perpendicularly passing through the channeled body, an interior of the water supply unit being partitioned into a pressure regulating chamber and a water supply chamber by a partition wall having a plurality of pressure regulating holes, said pressure regulating chamber functioning to receive water from an outside and said water supplying chamber functioning to feed water to said heat exchanging tubes to cause water to flow along the external surfaces of said heat exchanging tubes, and a plurality of lower holes formed at a lower portion of the water supply unit to allow the heat exchanging tubes to perpendicularly pass through the water supply unit by way of the lower holes, each of said lower holes having a size larger than a cross-sectional size of each of the heat exchanging tubes.