Patent ID: 8516698

Claim:
Method for manufacturing a heat exchanger assembled from substantially flat elements of a first kind having edges and substantially flat elements of a second kind having edges, wherein the substantially flat elements of the second kind are provided with spacing profiles extending along at least part of their edges, and wherein the method comprises the following steps: stacking alternating substantially flat elements of the first kind and of the second kind onto each other until a stack of the elements with the required height is obtained wherein the spacing profiles of the substantially flat elements of the second kind are in contact with the adjacent substantially flat elements of the first kind; mutually connecting the substantially flat elements at the edges of the elements by immersing a first side surface of the stack of the elements into a liquid forming a connection between the elements over a depth which is smaller than the width of the spacing profiles, wherein the liquid is a solvent which partially dissolves the flat plates; and removing the stack of elements from the liquid; wherein the elements in the stack of the elements being situated close enough together such that when the elements contact the liquid a capillary effect occurs and the liquid travels between adjacent elements over the width of the spacing profiles to form a connection between adjacent elements; and rotating the stack of elements, dipping a further side surface into the solvent liquid, removing said further side surface from the liquid, and repeating the dipping and removing for the remaining side surfaces of the stack of elements.