Method for forming channels on diffusion media for a membrane humidifier
AssigneeGM Global Technology Operations LLC
InventorsJeffrey M. Guzda, David A. Martinchek
Life of this patent
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Abstract
A membrane humidifier assembly for a membrane humidifier for a fuel cell system and a method for making the same is disclosed, the method comprising the steps of providing a material for forming a diffusion medium; forming a plurality of channels in the material with one of a channel-forming roller, a means for etching the material, and a press for forming the diffusion medium; and providing a pair of membranes, wherein the diffusion medium is disposed between the pair of membranes.
Claims20
A method for making a membrane humidifier assembly for a membrane humidifier for a fuel cell system, the method comprising the steps of:
- providing a material for forming a diffusion medium;
- forming a plurality of channels in the material for forming the diffusion medium;
- and
- providing a pair of membranes, wherein the diffusion medium is disposed between the pair of membranes.
A method for making a membrane humidifier assembly for a membrane humidifier for a fuel cell system, the method comprising the steps of:
- providing a material for forming a diffusion medium, wherein the material is one of a glass fiber impregnated with a resin, a glass based-paper impregnated with a resin, a carbon fabric impregnated with a resin, and a paper impregnated with a resin;
- providing a channel-forming roller adapted to form a plurality of channels in a first surface of the material;
- forming the plurality of channels in the material with the channel-forming roller for forming the diffusion medium;
- and
- providing a pair of membranes, wherein the diffusion medium is disposed between the pair of membranes.
A membrane humidifier assembly for a membrane humidifier for a fuel cell comprising:
- a first diffusion medium;
- a second diffusion medium having a plurality of channels formed in a first surface thereof, wherein said second diffusion medium is formed from a cured material impregnated with a resin;
- and
- a pair of polymer membranes between which said first diffusion medium and said second diffusion medium are disposed.
Dependencies are inferred from the claim text.