| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pressure reducing valve for a fuel cell, capable of adjusting flow-pressure characteristics of a gas supplied to the fuel cell, while abolishing a method to directly pressurize the surface of a diaphragm by a gas in a gas pressurizing chamber. <P>SOLUTION: This gas pressure reducing valve 1 has a diaphragm 3 to divide the chamber of a body 2 into a first chamber 21 and a second chamber 22, a throttle hole opening varying mechanism 4 to make the opening of a throttle hole 40 variable with the deformation of the diaphragm 3, and a gas supply passage 5 to supply the gas containing an active material to the fuel cell 100 through the throttle hole 40. A movable body 6 to deform the diaphragm 3 and to adjust the opening of the throttle hole 40 of the throttle hole opening varying mechanism 4 is movably provided in the body 2. A gas pressurizing chamber 26 to pressurize the pressure receiving face 61 of the movable body 6 with the supply of the gas is provided. A gas pressurizing chamber pressure varying mechanism 9 to variably change the pressure of the gas in the gas pressurizing chamber 26 is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
