| 摘要 |
<p>The invention refers to a method of joining at least four heat transfer plates (2) to a plate package for a plate heat exchanger. Each heat transfer plate (2) comprises an outer edge portion (10) extending around the heat transfer plate in its edge area and an inner edge portion (11) extending around the heat transfer plate inside the outer edge portion (10). The heat transfer plates (2) are joined in pairs at a first contact plane to at least two plate pairs (16) along said inner edge portions (11). An outer edge portion of one of said plate pairs is brought to abutment at a second contact plane (20) to an outer edge portion of another of said plate pairs. Two outer edge portions (10) are welded by means of a weld joint (21), which is produced by means of a high energy beam towards one of the outer edge portions and which has a centre line sloping in relation to said contact plane (20). The invention also refers to a plate package produced in this manner.</p> |
