Turbo spray nozzle and spray coating device incorporating same
First Claim
1. A spray coating system, comprising:
- a spray gun comprising an air passage and a liquid coating passage; and
a spray head coupled to the spray gun, wherein the spray head comprises a spray nozzle comprising;
a rotatable shaft having a center bore, a plurality of radial passages, and a plurality of spiral shaped grooves disposed on a tapered outer surface of the rotatable shaft, wherein the radial passages extend outwardly through the rotatable shaft from the center bore to the respective spiral shaped grooves, the spiral shaped grooves include spray formation exits;
a drive mechanism coupled to the rotatable shaft, wherein the drive mechanism is configured to rotate the rotatable shaft; and
a movable sleeve disposed over the rotatable shaft and enclosing portions of the spiral shaped grooves.
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Accused Products
Abstract
A system and method is provided for atomizing a liquid without the use of air to atomize the liquid. The system comprises a turbo spray nozzle that has a rotatable shaft. The rotatable shaft has a center bore with an opening at one end to enable a liquid to flow into the center bore of the rotatable shaft. The rotatable shaft also has a plurality of orifices that extend from the center bore to an outer surface of the rotatable shaft at the end opposite the opening. The rotatable shaft is rotated by pressurized air. The rotation of the shaft causes the liquid flowing into the center bore to be induced into a helical flow path that causes the liquid to disassociate. The system may comprise a spray gun coupled to the turbo spray nozzle. The system may also comprise an air compressor to provide the pressurized air to rotate the rotatable shaft. The system may also comprise a container for the liquid hat may be pressurized to provide a motive force to the liquid.
63 Citations
38 Claims
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1. A spray coating system, comprising:
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a spray gun comprising an air passage and a liquid coating passage; and a spray head coupled to the spray gun, wherein the spray head comprises a spray nozzle comprising; a rotatable shaft having a center bore, a plurality of radial passages, and a plurality of spiral shaped grooves disposed on a tapered outer surface of the rotatable shaft, wherein the radial passages extend outwardly through the rotatable shaft from the center bore to the respective spiral shaped grooves, the spiral shaped grooves include spray formation exits; a drive mechanism coupled to the rotatable shaft, wherein the drive mechanism is configured to rotate the rotatable shaft; and a movable sleeve disposed over the rotatable shaft and enclosing portions of the spiral shaped grooves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A spray coating system, comprising:
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a spray gun; a drive comprising a plurality of air-driven blades disposed about a rotatable shaft, and wherein the drive is coupled to an air passage that is directed toward the plurality of air-driven blades to induce rotation of the rotatable shaft; and a spray nozzle coupled to the spray gun and rotatable by the drive, wherein the spray nozzle comprises; a plurality of spiral shaped fluid paths disposed about a rotational shaft, wherein the spiral shaped fluid paths comprise closed passages extending to respective exit ports, and the spiral shaped fluid paths are configured to rotate and pass a coating fluid outwardly from the respective exit ports to create a spray; and a movable sleeve disposed about the spiral shaped fluid paths; wherein the movable sleeve is selectively positionable along the length of the rotational shaft to vary a spray pattern. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A spray coating system, comprising:
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a spray gun having a head; and a spray nozzle coupled to the head of the spray gun, comprising; a shaft comprising a plurality of grooves, wherein the shaft comprises a conical exterior portion; a sleeve disposed about the shaft to close portions of the grooves and define exit ports, respectively, wherein the sleeve moves lengthwise along shaft to vary positions of the respective exit ports to vary a spray pattern of liquid passing though the closed portions and exiting from the exit ports of the plurality of grooves, respectively, and the plurality of grooves are disposed on the conical exterior portion. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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38. A spray coating system, comprising:
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a spray gun having a head; and a spray nozzle coupled to the head of the spray gun, comprising; a shaft comprising a plurality of grooves; a sleeve disposed about the shaft to close portions of the grooves and define exit ports, respectively, wherein the sleeve moves lengthwise along shaft to vary positions of the respective exit ports to vary a spray pattern of liquid passing though the closed portions and exiting from the exit ports of the plurality of grooves, respectively; a drive configured to induce rotation of the rotatable shaft, wherein the drive comprises a plurality of air-driven blades disposed about the rotatable shaft, and the drive is coupled to an air passage that is directed toward the plurality of air-driven blades to induce the rotation of the rotatable shaft.
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Specification