Low-pressure chamber with tsunami shelter function

Abstract

To provide a low-pressure chamber with tsunami shelter function which can endure severe earthquake vibrations, endure a severe muddy stream of tsunami even when a great tsunami attacks, endure a strong impact of debris, be used to wait for rescue while drifting for a long time, and be used as a low-pressure chamber for maintaining and enhancing health in a normal time. A housing includes an air supplying nozzle, an air discharging nozzle, and a housing window in a side surface. The air discharging nozzle is sequentially connected by pipes from a side near the housing to an emergency shutdown valve, a check valve, and an air discharging unit which is used to discharge the air in the housing. The air supplying nozzle is sequentially connected by pipes from a side near the housing to an emergency shutdown valve, a main air filter, a preliminary air filter, and a pressure control valve. The air discharging unit is activated to open and close the pressure control valve while continuously discharging the air in the housing in order to control a pressure in the housing to be a desired pressure curve. An air tight door includes a door window, and a window glass provided in the housing window and a window glass of the door window provided in the air tight door are provided with a window glass protection unit to protect the window glass.

Dependencies are inferred from the claim text.