Patent ID: 11946707
Assignee: ALFA LAVAL CORPORATE AB
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A heat transfer plate extending in an imaginary central extension plane and comprising an upper end portion, a center portion and a lower end portion arranged in succession along a longitudinal center axis of the heat transfer plate, the upper end portion comprising a first and a second port hole and an upper distribution area provided with an upper distribution pattern, the lower end portion comprising a third and a fourth port hole and a lower distribution area provided with a lower distribution pattern, and the center portion comprising a heat transfer area provided with a heat transfer pattern differing from the upper and lower distribution patterns, the upper end portion adjoining the center portion along an upper borderline and the lower end portion adjoining the center portion along a lower borderline, wherein the upper distribution pattern comprises elongate upper distribution ridges and elongate upper distribution valleys, a respective top portion of the upper distribution ridges extending in an imaginary upper plane and having a rounded first, a rounded second, a rounded third and a rounded fourth corner, and a respective bottom portion of the upper distribution valleys extending in an imaginary lower plane and having a rounded first, a rounded second, a rounded third and a rounded fourth corner, the upper distribution ridges longitudinally extending along a plurality of separated imaginary upper ridge lines extending from the upper borderline towards the first port hole, the upper distribution valleys longitudinally extending along a plurality of separated imaginary upper valley lines extending from the upper borderline towards the second port hole, for each of a first number>1 of the upper distribution ridges extending along a top upper ridge line of the upper ridge lines, which top upper ridge line is arranged closest to the second port hole, a curvature radius of the first corner of the top portion is larger than a curvature radius of the second corner of the top portion, the first and second corners being arranged on opposite sides of the top upper ridge line, the second corner being arranged closer to the second port hole than the first corner, and the first and third corners being arranged on the same side of the top upper ridge line.