A Plate Heat Exchanger

Abstract

The disclosure relates to a plate heat exchanger comprising: a package of heat exchanger plates, each having a peripheral portion and several port portions with through flow ports communicating with flow passages between adjacent heat exchanger plates. First guiding ribs are arranged in the port portions, which first guiding ribs in every other flow passage between the heat exchanger plates are configured to guide and distribute the first heat exchange medium from a first inlet channel to a heat exchange portion and from the heat exchange portion to a first outlet channel, and in that second guiding ribs are arranged in the port portions, which second guiding ribs in the remaining flow passages between the heat exchanger plates are configured to guide and distribute a second heat exchange medium from a second inlet channel to the heat exchange portion and from the heat exchange portion to a second outlet channel.

1 . A plate heat exchanger comprising:
 a package of heat exchanger plates, each having a peripheral portion and several port portions with through flow ports;   wherein the heat exchanger plates are permanently joined to adjacent heat exchanger plates of the package along their peripheral portions in such manner that they leave flow passages in a heat exchange portion between adjacent heat exchanger plates;   wherein the through flow ports of the heat exchanger plates are aligned and form first inlet and outlet channels through the package for a first heat exchange medium, which communicate with every other flow passage between the heat exchanger plates, and second inlet and outlet channels through the package for a second heat exchange medium, which communicate with remaining flow passages between the heat exchanger plates; and   wherein along each of the inlet and outlet channels, the port portions of adjacent heat exchanger plates, which form a flow passage separated from the inlet and outlet channel, respectively, are permanently joined around the inlet and outlet channel, respectively, between an outer line and an inner line, which inner line is located closer to the Inlet and outlet channel, respectively, comprising:   that first guiding ribs are arranged in the port portions, which first guiding ribs in every other flow passage between the heat exchanger plates are configured to guide and distribute the first heat exchange medium from the first inlet channel to the heat exchange portion and from the heat exchange portion to the first outlet channel, and in that second guiding ribs are arranged in the port portions, which second guiding ribs in the remaining flow passages between the heat exchanger plates are configured to guide and distribute the second heat exchange medium from the second inlet channel to the heat exchange portion and from the heat exchange portion to the second outlet channel, wherein fins are arranged in the heat exchange portion of the flow passages between the adjacent heat exchanger plates, which fins creates a number of parallel guide channels for each of the first and second heat exchange medium, respective, wherein the fins are created by a corrugated sheet metal, which has wave peaks and wave troughs, and wherein a number of the first and second guiding ribs extend into the mixing zone and abut against the respective end portion of the fins for positioning and guidance of the corrugated sheet metal of fins in the heat exchange portion of the flow passages.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the first and second guiding ribs constitute an integral part of a heat exchanger plate. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein the heat exchanger plates are made of thin material and be provided with the first and second guiding ribs shaped on one side, each first and second guiding rib being shaped in the port portion of a heat exchanger plate. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein the first and second guiding ribs are arranged in a separate sheet element, and wherein such sheet elements are arranged in the respective port portion. 
     
     
         5 . The heat exchanger according to  claim 1 , wherein the height of the first and second guiding ribs corresponds to the distance between two adjacent heat exchanger plates in the port portions, respective. 
     
     
         6 . The heat exchanger according to  claim 1 , wherein each parallel guide channel is delimited by walls of the fins and a heat exchanger plate. 
     
     
         7 . The heat exchanger according to  claim 1 , wherein the wave height of the fins of the corrugated sheet metal corresponds to the distance between two adjacent heat exchanger plates in the heat exchange portion. 
     
     
         8 . The heat exchanger according to  claim 1 , wherein a number of the first and second guiding ribs extend to a position at a distance from a respective end portion of the fins, which distance between the respective end portion of the fins and the first and second guiding ribs is configured as a mixing zone for mixing and equalize the volume flow of the first heat exchange medium before entering the parallel guide channels created by the fins, and for mixing and equalize the volume flow of the second heat exchange medium before entering the parallel guide channels created by the fins. 
     
     
         9 . The heat exchanger according to  claim 1 , wherein the outermost guiding ribs of the first and second guiding ribs extend into the mixing zone and abut against the respective end portion of the fins, for preventing the first and second heat exchange medium, respective, to flow in a bypass channel formed between the peripheral portion of the heat exchanger plate and the outermost fins in the heat exchange portion.