Enthalpy Heat Exchanger

Abstract

The invention relates to a counter flow enthalpy exchanger ( 1 ) having a parallelogram-shaped central part ( 11 ), whose ends in the flow direction through the exchanger it is joined by end parts ( 12, 13 ), which become narrower in the direction from the central part ( 11 ), whereby in order to separate the flow of the heat-transfer medium in the direction from the inner space to the outer space are arranged contour identical and with respect to the flowing medium sealed vapour-permeable lamellae ( 10 ) with shaping means for generating turbulent flow, whereby every two adjacent lamellae ( 10 ) form one interplate flow channel in the central part ( 11 ) one interplate flow channel. The lamella ( 10 ) is made as a one-piece self-supporting moulding common to the central part ( 11 ) and the end parts ( 12, 13 ), whereby it does not have a reinforcing support grid. Two adjacent lamellae ( 10 ) form one interplate flow channel in the end part ( 12, 13 ), in the walls of which are formed straight protrusions ( 121, 131 ) situated in the direction of the heat-transfer medium flow between the central part ( 11 ) and corresponding inlet or outlet of this medium.

1 . The counter flow enthalpy exchanger ( 1 ), having a central part ( 11 ) shaped as a rectangular quadrangle, at whose ends it is joined in the flow direction through the exchanger by end parts ( 12 ,  13 ), which become narrower in the direction from the central part ( 11 ), whereby for the separation of the flow of the heat transfer medium in the direction from the inner space to the outer space are arranged vapour-permeable lamellae ( 10 ) with the same area contour which are sealed with respect to the flowing medium and have shaping means for generating turbulent flow, whereby every two adjacent lamellae ( 10 ) form in the central part ( 11 ) one interplate flow channel characterized in that the lamella ( 10 ) is designed as a one-piece self-supporting moulding common to the central part ( 11 ) and the end parts ( 12 ,  13 ) without a reinforcing support grid, whereby every two adjacent lamellae ( 10 ) constitute in the end part ( 12 ,  13 ) one interplate flow channel, in whose walls are formed straight protrusions ( 121 ,  131 ) situated in the direction of the flow of the heat-transfer medium between the central part ( 11 ) and the corresponding inlet or outlet of this medium. 
     
     
         2 . The counter flow enthalpy exchanger ( 1 ) according to  claim 1 , characterized in that the self-supporting moulding of the lamella ( 10 ) is composite, whereby one of its components consists of a supporting nonwoven layer, which is connected to a vapour-permeable membrane. 
     
     
         3 . The counter flow enthalpy exchanger ( 1 ) according to  claim 2 , wherein the material of the vapour-permeable membrane is sulfonated block copolymer. 
     
     
         4 . The counter flow enthalpy exchanger ( 1 ) according to  claim 2 , characterized in that the connection of the supporting nonwoven layer with a vapour-permeable membrane is implemented by moulding or welding or gluing or dipping. 
     
     
         5 . The counter flow enthalpy exchanger ( 1 ) according to  claim 1 , characterized in that of the lamellae ( 10 ) are interconnected at least in some parts of the circumference by welding or gluing by means of airtight joints. 
     
     
         6 . The counter flow enthalpy exchanger ( 1 ) according to  claim 1 , characterized in that a lamella ( 10 ) is made from flat blanks which are pressed between forming plates having a temperature higher than 40° C.