Patent ID: 7413003

Claim:
A plate for a heat exchanger comprising: cups formed at ends thereof so as to fluidically communicated with flow channels formed therein; a plurality of first beads protruding toward the flow channels in such a manner that each array of the first beads is repeatedly arranged in the same number in the form of a zigzag; refrigerant distributing sections formed at inlet and outlet sides of the flow channels, the refrigerant distributing sections having one or more second beads arranged asymmetrically with respect to a vertical central line of the cup which is parallel with the longitudinal direction of the flow channel, and a plurality of passageways partitioned by the second beads; and wherein the inlet and outlet of the flow channel are formed in parallel by a partition bead formed at the center of the plate, and the sectional area of a passageway formed at the side of the partition bead with respect to the central line of the cup is smaller than the sectional area of a passageway formed in the opposite side, and the second beads formed at the side of the larger passageway are larger than other second beads.