DEVICE FOR MAINTAINING AIR MEDIUM COMPOSITION IN SEALED CONTAINER

摘要

FIELD: machine building. ^ SUBSTANCE: device for maintaining air medium composition in sealed container includes control unit. The latter includes electric power supply, analogue-to-digital converter of information and power control signals in the form of interface conversion unit, sensors recording the parameters of automated system, switching devices of information and power control signals in the form of interface input-output unit, which are electrically connected to digital electronic computing device and connected to electric drive of adjustable actuating device, actuating device proper and electric drive of adjustable actuating device, and pneumatic line connecting the actuating mechanism to sealed container. As actuating device there used is electric pneumatic valve connected immediately to one of two outlets of sealed container. Valve is connected via a pneumatic line to additional filter installed at the outlet of pneumatic line and interconnected with the environment. Oxygen sensor is installed immediately at the second outlet of sealed container. Oxygen sensor and electric pneumatic valve have direct and return electric communications to control unit via control and power supply chains to control the change of position of working member of electric pneumatic valve. ^ EFFECT: simpler device design and minimisation of dimension and weight characteristics; provision of adjustable oxygen inflow from air to the above said container. ^ 1 dwg