Heat Exchanger

Abstract

Heat exchanger device, comprising a plurality of cassettes, where a first cassette comprises two plates of a first type and a second cassette comprises two plates of a second type, where each plate is provided with a corrugated pattern having a plurality of ridges and valleys with side walls there between, where the corrugated pattern comprises undulations parallel to the direction of the corrugated pattern, where the cassettes are mounted adjacent each other at a predefined distance, and where the perpendicular distance between the side walls of two adjacent cassettes is substantially constant over the width of the heat exchanger device. The advantage of this device is that the difference in flow restriction in the heat exchanger is minimised.

1 . A heat exchanger device comprising a plurality of cassettes, wherein a first cassette has two plates of a first type and a second cassette has two plates of a second type, wherein each plate is provided with a corrugated pattern having a plurality of ridges and valleys with side walls therebetween, wherein the corrugated pattern has undulations parallel to the direction of the corrugated pattern, wherein the cassettes are mounted adjacent each other at a predefined distance, and further wherein the perpendicular distance between the side walls of two adjacent cassettes is substantially constant over the width of the heat exchanger device. 
     
     
         2 . The heat exchanger device according to  claim 1 , wherein the corrugated pattern of the heat exchanger plates is substantially perpendicular to the main flow direction of the heat exchanger. 
     
     
         3 . The heat exchanger device according to any one of  claims 1  and  2 , wherein the difference in the perpendicular distance between the side walls of the first cassette and the side walls of the second cassette is less than 1/10 of the height of a ridge. 
     
     
         4 . The heat exchanger device according to any one of  claims 1  and  2 , wherein the difference in the perpendicular distance between the side walls of the first cassette and the side walls of the second cassette is less than 1/50 of the height of a ridge. 
     
     
         5 . The heat exchanger device according to any one of  claims 1  and  2 , wherein the difference in the perpendicular distance between the side walls of the first cassette and the side walls of the second cassette is less than 1/100 of the height of a ridge. 
     
     
         6 . A heat exchanger comprising a plurality of heat exchanger devices according to any one of  claims 1  and  2 . 
     
     
         7 . A heat exchanger comprising a plurality of heat exchanger devices according to  claim 3 . 
     
     
         8 . A heat exchanger comprising a plurality of heat exchanger devices according to  claim 4 . 
     
     
         9 . A heat exchanger comprising a plurality of heat exchanger devices according to  claim 5 .