US 9,812,720 B2
Humidifier, for example for a fuel cell
Michael Harenbrock, Ludwigsburg (DE)
Assigned to MANN+HUMMEL GMBH, Ludwigsburg (DE)
Filed by MANN+HUMMEL GMBH, Ludwigsburg (DE)
Filed on Mar. 20, 2015, as Appl. No. 14/663,504.
Claims priority of application No. 10 2014 003 959 (DE), filed on Mar. 20, 2014.
Prior Publication US 2015/0270561 A1, Sep. 24, 2015
Int. Cl. H01M 8/04 (2016.01); H01M 8/04119 (2016.01)
CPC H01M 8/04149 (2013.01) 15 Claims
OG exemplary drawing
 
1. A humidifier operable for humidifying air for a fuel cell, comprising:
a housing;
at least one water-permeable fabric layer arranged within the housing;
a first gas stream having a moisture content; and
a second gas stream having a lower moisture content than the first gas stream;
wherein the first gas stream and the second gas stream are each guided along opposite sides of the at least one water-permeable fabric layer;
wherein a separately designed hydrophilic additional layer is positioned directly upstream of the at least one water-permeable fabric layer, the hydrophilic additional layer positioned on a side having the gas stream with higher moisture content;
wherein an edge region of the additional layer is fixedly connected onto an edge region of the region of at least one water-permeable fabric layer;
wherein a middle region interior of the edge region of the additional layer is fixedly connected onto an adjacent middle region of at least one water-permeable fabric layer by a plurality of spaced apart dot-shaped connecting points;
wherein the connecting points are points where the additional layer and the at least one water-permeable fabric layer are fixed together by thermal bonding, or an adhesive;
wherein between the connecting points free sections are formed that are free of any connection between the additional layer and the at least one water-permeable fabric layer such that moisture transitions freely from the additional layer to the at least one water-permeable fabric layer.