Patent ID: 7287577

Claim:
A heat exchanger comprising: a refrigerant pipe for allowing a refrigerant to flow therethrough; at least one fin disposed such that the refrigerant pipe penetrates through the at least one fin for performing heat exchange with air passing by the at least one fin; at least one slit formed by partially cutting out the at least one fin; and at least one slit fin extending from the at least one fin adjacent to one side edge of the at least one slit for inducing turbulent flow in air flowing along a flow channel spaced a predetermined distance from the at least one fin, wherein the width of the at least one slit is greater than or equal to ⅓ of the diameter of the refrigerant pipe, wherein the at least one slit and the at least one slit fin extend such that the at least one slit and the at least one slit fin are substantially perpendicular to the flow direction of air, and the at least one slit fin is partially parallel with the at least one fin while being spaced a predetermined distance from the at least one fin; and wherein the at least one slit fin comprises a plurality of slit fins, and wherein each of said plurality of slit fins comprises: a flat plate part disposed substantially parallel with the at least one fin; and leg parts, each of said leg parts having one end connected to either end of the flat plate part and the other end connected to either end of the at least one fin adjacent to one side edge of the at least one slit such that the flat plate part is spaced a predetermined distance from the at least one fin, and an angle between each of the leg parts of each of said plurality of slit fins and the at least one fin is about 30 degrees.