| 摘要 |
A heat exchanger plate (4, 6, 8) and a plate heat exchanger (2) comprising such a heat exchanger plate is provided. The heat exchanger plate has a port hole (36, 38, 42, 44) with a reference point (80) that coincides with a center point (C) of a biggest imaginary circle (82) that can be fitted into the port hole. The port hole is arranged within the left half and the upper half of the heat transfer plate and has a form defined by a number of corner points (66, 68, 70) of an imaginary plane geometric figure (72) of which at least one is displaced from an arc (92) of the circle, and the same number of thoroughly curved lines (74, 76, 78) connecting the corner points. A first corner point (66) of the corner points is arranged closest to a transition (84) between a first short side and a first long side of he heat transfer plate and on a first distance (dl) from the reference point. A second corner point (68) of the corner points is arranged closest to the first corner point in a clockwise direction and on a second distance (d2) from the reference point. A third corner point (70) of the corner points is arranged closest to the first corner point in a counter clockwise direction and on a third distance (d3) from the reference point. |
