Patent ID: 6471195
Filing Date: 2002-10-29
Classification: F24F,H01M,Y02E

Abstract:
A humidifier for use with a fuel cell, comprising:a plurality of combined water permeable membranes or water permeable devices, each of the water permeable membrane or water permeable devices generating humidified gas by flowing therein different gases with different moisture contents and by moisture exchanging between the different gases so that one dry gas with smaller moisture content is humidified with the other moist gas with larger moisture content; and flowing passage switching means for optionally switching flowing passages of said dry gas; wherein said flowing passage switching means switches the flowing passage in accordance with a required amount of said humidified gas so as to selectively use particular water permeable membranes or a particular water permeable device from among the plurality of water permeable membranes or water permeable devices.