Patent ID: 6846587
Filing Date: 2005-01-25
Classification: F04B,H01M,Y02E

Abstract:
1. An anode stream recirculation system for a fuel cell, the fuel cell including an anode gas input and an anode gas output, the anode stream recirculation system comprising: an anode gas supply; a switch connected with the anode gas supply for controlling the release of anode gas therefrom; a pressure regulating device connected between the switch and the anode gas input of the fuel cell; a diaphragm pump connected between the anode gas output and the anode gas input of the fuel cell thereby form an anode gas recirculation path for the fuel cell, the diaphragm pump being operable responsive to anode gas pressure within the recirculation path; wherein the diaphragm pump has first and second sensors electrically connected with the switch for automatically controlling the selective actuation thereof, said first sensor being positioned above a diaphragm of said diaphragm pump, said second sensor being positioned below said diaphragm of said diaphragm pump, said first and second sensors detecting a position of said diaphragm.