Fluid tip
AssigneeCarlisle Fluid Technologies (UK) Ltd
InventorsSimon Davies, Stephen John Mannouch
Life of this patent
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Abstract
A fluid tip for use with a spray gun. The fluid tip comprises an air cap and a paint nozzle. The air cap comprises an inner surface 206 and the paint nozzle comprises an outer surface 208. The inner and outer surfaces define sides of an air channel 203. The inner and outer surfaces are defined by contours, each contour terminating to form an air channel outlet 207 for discharging an air jet proximal a paint nozzle outlet of the paint nozzle. The contours are configured to provide a velocity profile 400 across the air channel outlet 207 of an air flow 401 through the air channel 203 in which velocities of air radially closer to the paint nozzle outlet are substantially higher than velocities radially further from the paint nozzle outlet.
Claims19
A system, comprising:
- a fluid tip configured to couple to a paint spray gun, wherein the fluid tip comprises:
- an air cap comprising an inner surface;
- a paint nozzle comprising an outer surface;
- the inner and outer surfaces define sides of an air channel;
- the inner and outer surfaces are defined by curvilinear contours that curve in a downstream direction of an air flow through the air channel and turn away from a radial direction toward and axial direction relative to a central axis of the fluid tip, each curvilinear contour terminating to form an air channel outlet configured to discharge an air jet to atomize paint exiting from a paint nozzle outlet of the paint nozzle;
- the curvilinear contours are configured to provide a velocity profile across the air channel outlet of the air jet in which velocities of air radially closer to the paint nozzle are higher than velocities radially further from the paint nozzle outlet, wherein the paint nozzle comprises a paint nozzle inner diameter and a paint nozzle thickness, wherein the paint nozzle thickness is configured to be 4.44×the paint nozzle inner diameter for a paint of minimal viscosity.
A system, comprising:
- a fluid tip configured to couple to a paint spray gun, wherein the fluid tip comprises:
- a paint channel extending to a paint nozzle outlet;
- and
- an air channel extending to an air channel outlet, wherein the air channel outlet is configured to discharge an air jet to atomize paint exiting from the paint nozzle outlet, wherein a first surface having a first curvilinear contour defines a radially outer boundary of the air channel and a second surface having a second curvilinear contour defines a radially inner boundary of the air channel, the first and second curvilinear contours curve in a downstream direction of an air flow through the air channel and turn away from a radial direction toward an axial direction relative to a central axis of the fluid tip, and the first and second curvilinear contours are configured to provide a velocity profile across the air channel outlet of the air jet in which velocities of air radially closer to the paint nozzle outlet are higher than velocities radially further from the paint nozzle outlet, wherein the paint nozzle outlet comprises a paint nozzle inner diameter and a paint nozzle thickness, wherein the paint nozzle thickness is configured to be 4.44×the paint nozzle inner diameter for a paint of minimal viscosity.
A system, comprising:
- a fluid tip configured to couple to a paint spray gun, wherein the fluid tip comprises an air cap and a paint nozzle, wherein the air cap is configured to be positioned about the paint nozzle, the air cap comprises an inner surface, and the paint nozzle comprises an outer surface;
- the inner and outer surfaces define sides of an air channel;
- the inner and outer surfaces are defined by curvilinear contours that curve in a downstream direction of an air flow through the air channel and turn away from a radial direction toward an axial direction relative to a central axis of the fluid tip, each curvilinear contour terminating to form an air channel outlet configured to discharge an air jet to atomize paint exiting from a paint nozzle outlet of the paint nozzle;
- and
- the curvilinear contours are configured to provide a velocity profile across the air channel outlet of the air jet in which velocities of air radially closer to the paint nozzle outlet are higher than velocities radially further from the paint nozzle outlet, wherein the paint nozzle comprises a paint nozzle inner diameter and a paint nozzle thickness, wherein the paint nozzle thickness is configured to be 4.44×the paint nozzle inner diameter for a paint of minimal viscosity.
Dependencies are inferred from the claim text.