| 摘要 |
The invention refers to a heat exchanger plate (11), a pair of heat exchanger plates, and a plate package for a plate heat exchanger. Each heat exchanger plate includes a heat transfer area (33) and a distribution area (34) which adjoins the heat transfer area along a borderline (35). The distribution area has projections and depressions abutting depressions and projections, respectively, on a distribution area of adjacent heat exchanger plates. The heat transfer area has projections (51) and depressions (52) abutting depressions and projections, respectively on a heat transfer area of adjacent heat exchanger plates for forming first contact surfaces positioned at a first distance from each other along a direction substantially parallel with the borderline. The heat transfer area includes a transition area (58), which adjoins the distribution area along the borderline and has projections and depressions abutting depressions and projections, respectively, of a heat transfer area of adjacent heat exchanger plates for forming second contact surfaces at a second distance from each other along the first direction. The second distance is significantly shorter than the first distance. |
| 主权项 |
1. A heat exchanger plate for a plate package for a plate heat exchanger for receiving a first medium and a second medium, wherein the heat exchanger plate has a central extension plane and comprises
a first end area, a second end area, a central area, which extends between the first end area and the second end area, wherein a center axis extends along the heat exchanger plate through the first end area, the central area and the second end area, a first distribution area which extends on the first end area and adjoins the central area along a first borderline, wherein the first distribution area in relation to the extension plane has projections and depressions which are adapted to abut depressions and projections, respectively, on a distribution area of adjacent heat exchanger plates in the plate package for providing a uniform distribution of said media along the first borderline, a second distribution area which extends on the second end area and adjoins the central area along a second borderline, wherein the second distribution area in relation to the extension plane has projections and depressions which are adapted to abut depressions and projections respectively on a distribution area of adjacent heat exchanger plates in the plate package for providing a uniform distribution of the media along the second borderline, wherein the central area comprises a heat transfer area having, in relation to the extension plane, projections and depressions which are adapted to abut depressions and projections, respectively, on a heat transfer area of adjacent heat exchanger plates in the plate package for forming first contact surfaces which are positioned at a first distance from each other along a first direction which is substantially parallel with the first borderline, wherein the central area further comprises a first transition area and a second transition area both adjoining the heat transfer area, the first and second transition areas together being essentially smaller than the heat transfer area, the first transition area, adjoining the first distribution area along the first borderline, and the second transition area adjoining the second distribution area along the second borderline, wherein the first transition area and the second transition area in relation to the extension plane have projections and depressions which are adapted to abut depressions and projections, respectively, of a central area of adjacent heat exchanger plates in the plate package for forming second contact surfaces which are positioned at a second distance from each other along said first direction which is substantially parallel with the first borderline, wherein the second distance is significantly shorter than the first distance, and wherein the heat transfer area has a corrugation, which forms said projections and depressions and which extends along an inclination direction forming an acute first angle with the center axis, wherein the first transition area and the second transition area have a corrugation, which forms said projections and depressions and which extends along an inclination direction forming an acute second angle with the center axis, and wherein the first angle is larger than the second angle.
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