Apparatus for impregnating water with carbon dioxide

Claim 1

Apparatus for impregnating water with carbon dioxide comprising a pressure tight vessel having a vertical central axis, means for supplying fresh water into the vessel at the top thereof to a predetermined water line to define a head space in the vessel above the water line, means for supplying carbon dioxide gas into the vessel at the top thereof above the water line, a motor submerged in water in the vessel below the predetermined water line located on the vertical central axis of the vessel, a liquid pump within the container on the vertical central axis thereof connected to the motor for rotation thereby, said pump having a suction inlet proceeding circumferentially of the vessel in one direction and said pump having a delivery port proceeding circumferentially of the container in the opposite direction, means for drawing carbon dioxide gas from the head space of the vessel above the water line therein into the pump on actuation of the pump by the motor whereby the carbon dioxide gas and water are mixed in the pump and are delivered from the delivery port of the pump in a mixed condition and traverse the vessel in a generally horizontal circular path centered on the axis of the container and a cylinder positioned within the container having an axis of generation substantially congruent with the axis of the vessel and having an outer periphery which is in spaced relation to the inner periphery of the vessel providing an inner and outer cooling surface between the pump and the inner wall of the vessel, whereby the pump produces a circulation of carbon dioxide impregnated water along both the inside and outside cooling surfaces with the circulation velocity of the water along the inside cooling surface being greater than along the outside cooling surface.