Cross-flow plate heat and/or moisture exchanger

Abstract

The invention relates to a cross-flow plate heat and/or moisture exchanger having plates which are arranged above, below or next to one another, and form alternating flow passages for a first and a second fluid. According to the invention, for a cross-flow plate heat and/or moisture exchanger of this type, in order to achieve an improved transfer performance and an increased pressure stability in relation to differential pressures between the two fluids, each plate (2) has a first cross-flow region (4), a following counter flow region (6) in the flow direction of the first cross-flow region (4), and a following second cross-flow region (10) in the flow direction of the counter flow region (6). The cross-flow regions (4, 10) of neighbouring plates are to form flow channels (5, 11) running approximately perpendicular to one another, wherein the counter flow regions (6) of neighbouring plates form counter flow channels (7) running approximately parallel to one another and the first or second cross-flow region (4, 10) of each plate (2) corresponds to the second or first cross-flow region of each neighbouring plate in terms of the dimensions thereof, and is arranged above, below or next to same, and wherein the counter flow region (6) of each plate (2) corresponds to the counter flow region of each neighbouring plate (3) in terms of the dimensions thereof, and is arranged above, below or next to same.

1 . A cross-flow plate heat and/or moisture exchanger comprising:
 plates that are above, below or next to one another and form alternating flow passages for a first and a second fluid, each plate having
 a first cross-flow region 
 a counter-flow region downstream of the first cross-flow region in flow direction and 
 a second cross-flow region downstream of the counter-flow region in flow direction, the cross-flow regions of adjacent plates forming flow passages running approximately perpendicular to one another, the counter-flow regions of adjacent plates forming counter-flow passages running approximately parallel to one another, the first or second cross-flow region of each plate in terms of its dimensions corresponding to the second or first cross-flow region of each adjacent plate and being above, below or next to same, and the counter-flow region of each plate in terms of dimensions corresponding to the counter-flow region of each adjacent plate and being above, below or next to same. 
   
     
     
         2 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the counter-flow passages of the counter-flow region of each plate extend at a small acute angle of 5° to 25° to the counter-flow passages of the counter flow region of each adjacent plate. 
     
     
         3 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the direction of counter-flow passages of the counter-flow regions of the plates changes. 
     
     
         4 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the plates are of square or rectangular shape. 
     
     
         5 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the counter-flow regions of each plate are of approximately oval or elliptical shape and extend between two opposite corners of the plate. 
     
     
         6 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the general flow direction of the two fluids separated from each other by the plates through the cross-flow plate heat and/or moisture exchanger is chosen such that the two fluids flow through the counter-flow regions of the cross-flow plate heat and/or moisture exchanger in counter direction. 
     
     
         7 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein walls of the flow passages of the cross-flow regions that are between the plates, are formed in a uniform or interruption-free manner. 
     
     
         8 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein walls between the plates, of the flow passages of the cross-flow regions comprise interruptions. 
     
     
         9 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the plates are formed of aluminum. 
     
     
         10 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the plates formed of plastic. 
     
     
         11 . The cross-flow plate heat and/or moisture exchanger according to  claim 1 , wherein the plates are formed of membrane plates, with a membrane layer for transfer of enthalpy between the two fluids, and at least one perforated support layer that can impart a specifiable mechanical strength and a spatial structure to the membrane plate and be maintained therein. 
     
     
         12 . The cross-flow plate heat and/or moisture exchanger according to  claim 11 , wherein the membrane layer of the plates is formed of a suitable plastic material, preferably a polyurethane or a polymer material. 
     
     
         13 . The cross-flow plate heat and/or moisture exchanger according to  claim 11 , wherein the support layer of the plates is formed of a suitable fleece material.