Patent ID: 6648067
Filing Date: 2003-11-18
Classification: D06F,F28D,F28F,Y10S

Abstract:
A heat exchanger for condensation laundry dryers, having several flat heat exchanger plates (12) which are layered in parallel to each other at separation distances as a stack (10), where each plate contains at least one humid air channel (14) and is made out of a film, the humid air channel having a humid air inlet and a humid air outlet to permit a humid air flow along the humid air channel from the humid air inlet to the humid air outlet, said heat exchanger plates having several struts (32) functioning as cooling lamellas which project out from said heat exchanger plates, said struts being elongated perpendicular to the humid air channel (14) and, supported together on an adjacent heat exchanger plate (12), form cooling air channels (42), the cooling air channels having a cooling air inlet and a cooling air outlet to permit a cooling air flow along the cooling air channels from the cooling air inlet to the cooling air outlet, the cooling air channels extending perpendicular to the humid air channel so that the cooling air flow is perpendicular to the humid air flow, the struts being elongated in a direction perpendicular to the humid air flow and parallel to the cooling air flow, where the heat exchanger plates (12) are fixed on their facing ends that have the openings of the humid air channel (14) so that they are sealed off from each other in a mounting frame, wherein the struts (32) that form the cooling lamellas are shaped as pockets that open towards the humid air channel (14), and wherein adjacent humid air channels (14) are pressure attached together with connecting connection struts (28).