FIELD: creation of vacuum. SUBSTANCE: passive medium supply device is made in form of intake chamber, nozzle and mixing chamber being coaxially located on opposite sides of intake chamber. Mixing chamber is so mounted that wall of its inlet section forms cavity with walls of intake chamber; this cavity is brought in communication with separator by means of drain main. Outlet section of drain main is located below level of liquid contained in separator, thus forming hydraulic seal. Outlet of ejector is connected to capacitor which is connected in its turn with inlet of separator. According to other version, cavity of intake chamber is connected to pump inlet. EFFECT: enhanced efficiency of plant. 7 cl, 1 dwg
