Powder atomizer
AssigneeMaterial Sciences Corporation
InventorsGeorge R. Alexander, Eduardo C. Escallon
Life of this patent
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Abstract
A powder atomizer comprises a pan, and an element journaled for rotation about an axis. The pan partially surrounds the element, and therewith defines a venturi into which powder is fed. The venturi has an inlet and a spaced outlet. A motor rotates the element within the pan in excess of the speed required to throw powder from the element by centrifugal force and draws gas through the venturi, so that powder fed into the element is atomized and produces a uniform cloud of particulate material. A nonconductive element minimizes the electrical charge on the pan, and thereby the resulting agglomerization of particulate material at the outlet.
Claims58
A powder atomizer, comprising a pan, an element journaled for rotation about an axis, said pan partially surrounding said element and therewith defining a venturi into which powder is fed, said venturi having an inlet into which powder is fed and a spaced outlet, a motor rotating said element within said pan in excess of the speed required to throw powder from said element by centrifugal force and drawing gas through said venturi so that powder fed into said inlet is atomized and produces a uniform cloud of particulate material, and means minimizing the electrical charge on said pan and thereby the resulting agglomeration of particulate material at said outlet.
A powder atomizer, comprising a pan, a cylindrical element journaled for rotation about an axis, said pan being coaxial of and partially surrounding said element for therewith defining a venturi into which powder is fed, said venturi having an inlet and a radially spaced outlet, a motor rotating said element in excess of the speed required to throw powder from said element by centrifugal force and drawing gas through said venturi for thereby atomizing powder fed into said inlet to produce a uniform cloud of particulate material, and said pan adjacent to said outlet comprising a nonconductive material.
A powder atomizer comprising a pan, a cylindrical element, said element being journaled for rotation about an axis, said pan being cylindrical and positioned coaxial of said element, said pan partially surrounding said element, said element and pan defining a cylindrical venturi therebetween into which powder is fed, said venturi having an inlet and outlet radially spaced apart, means for rotating said element within said pan at speeds in excess of the speed required to throw powder from said element by centrifugal force, said element drawing gas through said venturi and atomizing powder fed into said inlet to produce a uniform cloud of particulate material, said element being chosen to maximize particle to particle and particle to element collisions thereby to deagglomerate and reduce the particle size of the powder being fed into said venturi.
Dependencies are inferred from the claim text.