| 摘要 |
PURPOSE:To control differential pressures among the electrodes of a fuel cell without causing any mechanically movable parts by controlling the heights of gas nozzles installed at ends of gas tubes immersed in liquid contained in liquid containers. CONSTITUTION:Gases supplied from an anode 1, a cathode 2 and a case 3 are discharged through nozzles 15, 18 and 22 into liquid containers 16, 19 and 23. Differential pressures among the anode 1, the cathode 2 and the case 3 can be maintained at given levels by specifying the positions of the nozzles 15, 18 and 22. The nozzles 15, 18 and 22 consist of glass tubes having a given diameter and numerous small holes in their surfaces. In addition, gas is discharged from an area upper than a given level (AA') of the nozzle surface during normal operation and an area upper than a level (BB') above the level (AA') is used in discharging gas when electrode pressure decreases. Owing to the above constitution, a continuous gas flow can be maintained regardless of the variation of gass pressure in the electrode. |
