| 摘要 |
PURPOSE:To suppress the variation of internal pressures of a pneumatic film structure by sending signals of a door-opening and closing switch for controlling the opening or closing of the double door of an electric power mechanism and also of the preliminary opening of a solenoid valve mechanism to a computer for controlling internal pressures. CONSTITUTION:The inside and outside doors 7 and 4 of an electric power mechanism are inter-locked, and only when one door is closed, the other door is opened. When both doors 7 and 4 are closed, the inside preliminary opening on the inside 1 of a pneumatic film structure is opened by a solenoid valve mechanism and the pressure of the entrance space 2 is equalized with the internal pressure of the pneumatic film structure. Prior to opening or closing the door 7 or the door 4, signals of the inside door opening and closing switch 9 or the outside door opening and closing switch 6 are sent out to a computer 10 for controlling internal pressures. The internal pressures of the pneumatic film structure 1 during opening or closing period can thus be predicted and controlled. |
