Patent ID: 6775909
Filing Date: 2004-08-17
Classification: F28F,Y10T

Abstract:
A method for manufacturing a plate heat exchanger having a package of heat transfer plates and an end plate, the end plate having an outer side and an inner side facing the plate package and at least one porthole, wherein the method includesproviding a first part manufactured of a sheet metal with a material thickness and having a substantially cylindrical pipe portion and an abutment portion, providing a second part manufactured of a sheet metal with a material thickness and having a substantially cylindrical pipe portion and an abutment portion, introducing the pipe portion of the first part into said porthole, introducing the pipe portion of the second part into said porthole and the pipe portion of the first part so that an area is formed where said pipe portions overlap each other, wherein the material thickness of the first part is greater than the material thickness of the second part at least in said overlapping area, and connecting the pipe portion of the second part to the pipe portion of the first part by the application of a weld joint.