Rotory bell atomizer shaping air configuration and air cap apparatus
AssigneeGraco Minnesota Inc.
InventorsDaniel L. Medina, Dawn P. Svenkeson-Koubal, Elisa J. McCline, Mark S. Jennen
Life of this patent
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Abstract
A shaping air ring for a rotary bell atomizer spray device includes a plurality of circumferentially spaced nozzles disposed in the shaping air ring, wherein each nozzle has a mix chamber, at least one inlet on an upstream end of the mix chamber, and an outlet at a downstream end of the mix chamber. First and second air flows are provided to the mix chamber through the at least one inlet and a combined air flow is discharged through the outlet. The combined air flow shapes the spray pattern of the liquid sprayed by the rotary bell atomizer spray device.
Claims15
A shaping air ring for a rotary bell atomizer spray device, the shaping air ring comprising:
- a plurality of nozzles disposed in the shaping air ring, wherein each nozzle of the plurality of nozzles comprises:
- a mix chamber having a first inlet, a second inlet, and an outlet;
- a first source air passage formed in the shaping air ring, wherein the first source air passage extends to the first inlet to output a first flow of shaping air through the first inlet, the first source air passage including a first feed air passage open on the shaping air ring to receive the first flow of shaping air into the shaping air ring;
- and
- a second source air passage formed in the shaping air ring, wherein the second source air passage extends to the second inlet to output a second flow of shaping air through the second inlet, the second source air passage including a second feed air passage open on the shaping air ring to receive the second flow of shaping air into the shaping air ring.
A rotary atomizer spray device for coating a surface, the device comprising:
- an atomizing bell cup disposed to rotate on an axis of rotation and configured to deliver a coating material;
- and
- a shaping air ring spaced radially outward of the atomizing bell cup, the shaping air ring comprising a plurality of nozzles circumferentially spaced about the axis, a first source air passage including a first feed air passage open on the shaping air ring to receive a first portion of pressurized air into the shaping air ring, and a second source air passage including a second feed air passage open on the shaping air ring to receive a second portion of pressurized air into the shaping air ring;
- wherein each nozzle of the plurality of nozzles includes:
- a mix chamber, a first inlet configured to provide the first portion of pressurized air to the mix chamber, a second inlet configured to provide the second portion of pressurized air to the mix chamber, and an outlet configured to discharge a combined flow formed from the first portion of pressurized air and the second portion of pressurized air.
Dependencies are inferred from the claim text.