Controlling pouring stream and receiver environment
AssigneePraxair Technology, Inc.
InventorMichael F. Riley
Life of this patent
Estimating the term…
Abstract
A method and system for providing a controlled gaseous environment at the opening to a receiver and around a free liquid stream downwardly entering the receiver opening. The method comprises laminarly emitting at least two gas flows to extend and intersect over the receiver opening thereby forming an upward plume enveloping the free liquid stream.
Claims9
A method for providing a controlled gaseous environment at the opening to a receiver and around a free liquid stream downwardly entering the receiver opening, said method comprising laminarly emitting, at a modified Froude number from about 0.2 to about 0.5, at least two gas flows to extend and intersect over the receiver opening thereby forming an upward plume enveloping the free liquid stream.
An system for providing a controlled gaseous environment at the opening to a receiver and around a free stream of liquid discharging from an origin downwardly into the receiver opening, said system comprising:
- (a) the receiver having the opening with a perimeter and a plane;
- (b) at least two diffuser mounted on opposite sides and near at least a portion of the perimeter of the receiver opening for emitting at least two gas flows over at least a portion of the receiver opening so as to produce an intersection of the flows and a rising gas plume over the opening;
- (c) an emitting area in each diffuser, each emitting area having a height and capable of emitting a laminar gas flow;
- (d) a gas source in communication with each diffuser;
- (e) means for controlling gas supply to each diffuser to emit flow laminarly at a modified Froude number within the range of from about 0.2 to about 0.5;
- and
- (f) an origin for a free liquid stream, said origin located not further from the plane of said receiver opening than approximately five times the height of an emitting area so as to be within the gas plume.
Dependencies are inferred from the claim text.