Shaper nozzle for a carbon dioxide snow cyclone separator
AssigneeChemetron Corporation
InventorPeter A. Students
Life of this patent
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Abstract
A nozzle for a carbon dioxide snow cyclone separator shapes the swirling discharge from the separator to form a unidirectional downwardly directed flow. The nozzle passage is defined by an annular series of transversely concave, juxtaposed, elongate surfaces formed in the body of the nozzle, whereby the passage is scalloped in transverse cross-section. In preferred forms, there are four identical, laterally contiguous, surfaces in the annular series defining the nozzle passage, each of which extends through an arc of .pi. radians.
Claims6
A nozzle for shaping the violently swirling carbon dioxide snow discharge from a carbon dioxide snow cyclone separator to form a non-diverging, unidirectional flow, said nozzle comprising:
- an elongate body adapted to be disposed in a longitudinally upright position beneath said cyclone separator;
- and
- a passage extending lengthwise through said body for receiving the carbon dioxide snow discharge from said separator, said passage having a scalloped transverse cross-section for reshaping said discharge as the latter flows through said passage,
- the lateral boundary of said passage being defined by an annular series of elongate, transversely concave, juxtaposed cylindrical surfaces formed in said body,
- each of said surfaces extending through an arc of predetermined radians,
- the sum of the arcs of all the surfaces in said series being greater than 2.pi. radians.
In a carbon dioxide snow hood having means for generating a flow of mixed carbon dioxide vapor and carbon dioxide snow and a cyclone separator for separating said flow of carbon dioxide vapor and snow to form a concentrated discharge of carbon dioxide snow, an improved nozzle for receiving and reforming the discharge from said separator, said nozzle including:
- an elongate body adapted to be disposed in a longitudinally upright position beneath said cyclone separator;
- and
- a passage extending lengthwise through said body for receiving the carbon dioxide snow discharge from said separator, said passage having a scalloped transverse cross-section for reshaping said discharge as the latter flows through said passage,
- the lateral boundary of said passage being defined by an annular series of elongate, transversely concave, juxtaposed cylindrical surfaces formed in said body,
- each of said surfaces extending through an arc of predetermined radians,
- the sum of the arcs of all the surfaces in said series being greater than 2.pi. radians.
Dependencies are inferred from the claim text.