Patent ID: 8281849

Claim:
A heat exchanger comprising: a first plate-shaped flow duct and a second plate-shaped flow duct which are arranged parallel to each other with a spacing between the first and second plate-shaped flow ducts, wherein the first plate-shaped flow duct comprises a first pipe socket and the second plate-shaped flow duct comprises a second pipe socket, wherein the first and second pipe sockets form a connecting duct by plugging into each other, the first and second pipe sockets being self-centering, wherein the connecting duct flow-connects the first plate-shaped flow duct and the second plate-shaped flow duct and bridges the spacing, wherein the first and second pipe sockets each comprise a cylindrical base region and a conical end region, wherein the first and second plate-shaped flow ducts are formed by a first plate and a second plate, respectively, and wherein the first and second plates form annular ducts with a square outline.