Patent ID: 7100280

Claim:
A method for producing a plate heat exchanger from a plurality of heat exchanger blocks comprising a first heat exchanger block and a second heat exchanger block each block having a multiplicity of heat exchange passages having inlet and outlet orifices, and each of said heat exchanger blocks having mounted on a first side thereof a first header which extends over at least part of said first side of the heat exchanger block and which makes a flow connection between part of said heat exchange passages, said method comprising (a) arranging said first and second heat exchanger blocks proximate to one another so that said first header of said first heat exchanger block is proximate to said first header of said second heat exchanger block and said first and second heat exchangers are spaced apart from one another, (b) connecting said first and second heat exchanger blocks to one another by means of a U-shaped sheet having a base and two sides whereby the base of the U-shaped sheet connects together the first sides of the two heat exchanger blocks, to which said headers are mounted, in such a way as to produce a continuous plane, (c) providing said first header of said first heat exchanger block and said first header of said second heat exchanger block, on their mutually confronting sides, with orifices, and (d) connecting said orifices of said mutually confronting sides via a connection piece introduced between the two headers whereby a flow connection is provided between the two headers, wherein the step of connecting said first and second heat exchanger blocks to one another by means of the U-shaped sheet can be performed before or after the step of connecting the orifices of the mutually confronting sides of the first headers via said connection piece.