RESPIRATION CONTROLLING APPARATUS FOR EXTREMELY NARROW SPACE

摘要

PURPOSE:To keep a supply amount of oxygen constant by providing an oxygen supplying apparatus with a diaphragm having an atmospheric pressure state closed space and a control valve moving therewith, and opening a switch valve, with expansion of the diaphragm due to the reduction of pressure in a suit by respiration. CONSTITUTION:A control valve 15 connected to a high pressure oxygen cylinder 2 outside a diving suit, is provided inside a diving suit, and one side of the control valve 15 is fixed to a diaphragm 19 via a spindle 17. A closed space 20 of the diaphragm 19 is maintained at the atmospheric pressure state. When the pressure tight diving suit is worn by a manipulator and closed, oxygen in the suit is consumed by respiration of the manipulator and pressure in the suit is reduced. With the reduction, the diaphragm 19 is expanded and the control valve 15 is opened to supply oxygen from the oxygen clinder 2. By this constitution, proper oxygen can be supplied according to an oxygen amount consumed by the manipulator, and the pressure in the suit can be maintained at the atmospheric pressure.