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Heat exchanger and use thereof

  • US 20070084593A1
  • Filed: 09/30/2004
  • Published: 04/19/2007
  • Est. Priority Date: 10/02/2003
  • Status: Active Grant
First Claim
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1. A heat exchanger comprising a plurality of plates each having first and second heat transfer surfaces on reverse sides thereof, said plates being arranged in a stack with spacings between mutually facing heat transfer surfaces of adjacent plates, alternate spacings in the stack providing respectively, a first fluid path for a first fluid and a second fluid path for a second fluid, and wherein the plates are arranged in a plurality of groups, each comprising at least two plates, pin means being provided comprising a plurality of groups of pins, the pins of each pin group being arranged to bridge plates of a respective plate group, wherein the pin means also comprises outer pins extending from the outermost heat transfer surfaces of at least one group of plates, said outer pins terminating in respective pin free ends, and wherein at least some pins extend only from the first heat transfer surface of at least one plate in at least one group and are offset with respect to pins extending only from the second heat transfer surface of that plate, said pins which are offset from each other being brazed or welded to said plate.

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