Gas and liquid contact apparatus – Contact devices – Rotating gases
Reexamination Certificate
2007-11-27
2007-11-27
Bushey, Scott (Department: 1724)
Gas and liquid contact apparatus
Contact devices
Rotating gases
C261S123000
Reexamination Certificate
active
11019470
ABSTRACT:
An apparatus and method are described that allows for the production of vortex-ring bubbles in a liquid. The device is an inverted cup with a short nozzle protruding through the center of its end face such that the nozzle lower opening is at a higher level than the open end of the inverted cup. When the immersed cup is pressurized with an inflow of gas, the liquid level of the confined gas in the cup will fall, and peel away from the nozzle open end. The gas will enter the nozzle when the pressure has built up within the cup sufficiently to break the liquid surface tension at the nozzle opening. The gas then self accelerates up through the nozzle and self organizes into a gas-filled vortex ring at the nozzle exit. The liquid level in the cup rises back up and re-enters the nozzle in a unique self-siphoning action shutting off further gas flow out the nozzle. Alternatively, the exiting flow of gas can be captured in a second conical nozzle and buoyantly directed to the throat of a cone where it undergoes the same self acceleration and self siphoning to form a vortex ring at the throat exit. Other embodiments of the device are described. The advantages are that the device is mechanically simple, easy to manufacture, has no moving pans, will not wear out, and does not require any operator intervention in order to function.
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patent: 5947784 (1999-09-01), Cullen
patent: 2002/0074673 (2002-06-01), Whiteis
patent: 2004/0088894 (2004-05-01), Haughton et al.
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