Heat exchanger for condensation laundry dryer
AssigneeJoma-Polytec Kunststofftechnik GmbH
InventorAlexander Maute
Life of this patent
Estimating the term…
Abstract
The invention involves a countercurrent heat exchanger for condensation laundry dryers of the type that is the object of DE 198 38 525 A1. In order to increase the cooling output of the heat exchanger plates (12) stacked into a heat exchanger plate stack (10), which each contain at least one humid air channel (14) and are made out of thermoplastic plastic or from a film consisting of a heat-conducting metal, the heat exchanger plates (12) are equipped with several struts (32) that form cooling lamellas which project outward from them and extend perpendicularly to the humid air channel (14), and which form pockets that open into the humid air channel (14).
Claims22
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).
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), wherein the at least one humid air channel (14) is formed by a flat tube and the struts (32) are molded onto at least one flat tube wall part (26) forming the flat tube, and wherein a length of the struts (32) molded onto the one flat tube wall part (26) forming the flat tube only amounts to a fraction of a width of the flat tube and the struts (32) are arranged to be offset from each other by gaps in the longitudinal direction of the humid air channel (14).
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, said heat exchanger plates having several struts (32) functioning as cooling lamellas which project out from said heat exchanger plates, said struts being elongated to extend perpendicular to the humid air channel (14) and, supported together on an adjacent heat exchanger plate (12), form cooling air channels (42), 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), wherein adjacent struts overlap one another in a cooling-air-channel direction to extend completely across the humid air channel.
Dependencies are inferred from the claim text.