| 摘要 |
<p>A method of making a plate package for a plate heat exchanger, a plate heat exchanger using such plate package and the use of a hole making process using a laser process, an electron beam process, a plasma process, a punching process or a drilling process to make such plate package. The invention also relates to a plate package (P) made according to the method including a number of first heat exchanger plates (A) and a number of second heat exchanger plates (B). Each heat exchanger plate (A, B) has a first porthole (8), and said port hole (8) of at least one of the heat exchanger plates (A, B) is surrounded by a peripheral rim (20). The first heat exchanger plates (A) and the second heat exchanger plates (B), are joined to each other and arranged side by side in such a way that the peripheral rims (20) together define an inlet channel (9) extending through the plate package (P). The peripheral rim (20) of the first and/or the second heat exchanger plates (A, B) has at least one through hole (25), forming a fluid passage (26) allowing a communication between the inlet channel (9) and the first plate interspaces (3). The at least one through hole (25) is made in a condition in which the first and the second heat exchanger plates (A, B) have been joined to each other to form the plate package (P).</p> |
