Abstract:
A very compact nozzle assembly 100, 200, 300 and spray head for an automotive washer nozzle is configured for inclusion into an automotive trim component. The compact nozzle assembly and spray head generate a very effective cleaning spray at a selected spray fan angle, yaw angle and roll angle and, in an exemplary embodiment, the spray fan is dual shear shaped, producing an even distribution, which may be varied from 30° to 120°. Spray head may be as small as 5mm in diameter and be aimed to provide a spray with various spray aim, yaw and roll angles. The design accounts for better mold ability and versatility of application.
Abstract:
A fluidic oscillator (2) suitable for use at colder temperatures for utilizing a pressurized liquid to generate a uniform spatial distribution of droplets has (a) an inlet (28) for the pressurized liquid, (b) a set of three power nozzles (24) that are fed by the pressurized liquid, (c) an interaction chamber (26) attached to the nozzles and which receives the flow from the nozzles, wherein this chamber has an upstream (26a) and a downstream (26b) portion, with the upstream portion having a pair of boundary edges (26c, 26d) and a longitudinal centerline (26e) that is approximately equally spaced between the edges, and wherein one of the power nozzles (24) is directed along the chamber's longitudinal centerline (26e), (d) a throat (30) from which the liquid exhausts from the interaction chamber (26), and (e) an island (24) located in the interaction chamber, with this island being situated downstream of the power nozzle (24) that is directed along the chamber's longitudinal centerline (26e).
Abstract:
A conformal, cup-shaped fluidic oscillator spray nozzle member (100, 200, 300, 400, 500) is configured to generate one or more oscillating sprays from fluid flowing into a substantially open proximal end and distally into a substantially closed distal end wall with one or more centrally located orifices defined therein. A multi-input, multi-output cup-shaped fluidic oscillator ( 200, 300, 400) is configured to generate a selected fluid spray from a plurality of (e.g., 2-8) fluid product inlets which are configured in interacting pairs and feed into a common interaction region of the fluidic nozzle geometry. Optionally, an outlet "A" can be positioned in the interaction region and allow for air entrainment into the interaction region or external oscillating spray streams to generate a foamed spray of fluid product.
Abstract:
A conformal, cup-shaped fluidic nozzle engineered to generate an oscillating spray is configured as a (e.g., 100, 400, 600 or 700). Preferably, the fluidic circuit's oscillation inducing geometry 710 is molded directly into the cup's interior wall surfaces and the one-piece fluidic cup may then fitted into an actuator (e.g., 340). The fluidic cup (e.g., 100, 400, 600 or 700) conforms to the actuator stem used in typical aerosol sprayers and trigger sprayers and so replaces the prior art "swirl cup" 70 that goes over the actuator stem (e.g., 320), With the fluidic cup (e.g., 100, 400, 600 or 700) and method of the present invention, vendors of liquid products and fluids sold in commercial aerosol sprayers 20 and trigger sprayers 800 can now provide very specifically tailored or customized sprays.
Abstract:
An improved fluidic oscillator (2), that operates on a pressurized liquid flowing through the oscillator to generate a liquid jet that flows into the surrounding gaseous environment to form of an oscillating spray of liquid droplets, includes: a member into which is fabricated a two-portion, flow channel, with its first portion configured so as to create the flow phenomena in the member that yields the spray's oscillating nature, and its second portion includes a splitter (22) that is used to divide the jet into component sprays whose centerlines assume a specified yaw or pitch angle relative to the centerline of the oscillator.
Abstract:
A nozzle and spray dispenser for generating a uniform substantially flat fan spray pattern when spraying high viscosity fluids (i.e., oils, lotions, cleaning liquids, shear-thinning liquids and gels and similar Newtonian and non-Newtonian fluids having viscosities of 10 -100 cP) is configured with an exit orifice (134) defining multiple lip segments 150A, 150B, 150C. Cup-shaped nozzle member (100) has a cylindrical side wall (102) surrounding a central longitudinal axis and has a circular closed end wall with at least one exit aperture passing through the end wall (112). At least one enhanced exit orifice structure is formed in an inner surface of the end wall, and includes two to five lip segments of selected width defining edges at the orifice (134), where each edge segment is defined at the distal edge of a separate and distinct interior wall segment 160A, 160B, 160C which has a selected wall convergence angle β.
Abstract:
An oscillating or pulsing fluid stream, or flow (18, 132, 300), is produced from a flow of pressurized air by fluidic apparatus (10, 100, 130, 180, 220) in a device (250) configured for use in surface cleaning, sweeping, lawn car applications, and the like. Converging inlet chamber walls (20, 22) define a tapered internal lumen having a smooth narrowing profile is configured to generate at a power nozzle (44) a high velocity steam with minimal pressure drop. Downstream of the power nozzle, first and second control ports (CP1, CP2) are in fluid communication with the high velocity steam (46) and with each other via an inertance loop (72) having a lumen of selected cross sectional area and length. The varying air flow is directed through an outlet chamber (14, 134) shaped to produce an oscillating flow (18) or a pulsating flow (132).
Abstract:
A vehicle speed, ambient temperature or surface-condition responsive wash system 89 has a control system configured to adapt the wash system's operation to sensed operating conditions. The adaptive system and method selectively controlling aimed windshield washer fluid sprays comprises a multi (e.g., two) mode system with a washer fluid driving pump 80 having an impeller 121 that is activated to supply fluid under pressure to a multi-mode nozzle assembly 98. Selectable first, or low pressure, and second, or high pressure, modes are provided by controlling the pump's polarity and impeller spin direction, hi an exemplary embodiment, a two-mode pump 80 is initially operated in the second mode, or reverse direction, producing a lower pressure flow.
Abstract:
An improved injector (1) which mixes a secondary fluid into a carrier fluid stream has (a) a body (2) for directing the flow of the carrier fluid, this body having an internal wall (3) forming a flow passage therethrough, a central axis, an inlet (8), an outlet (15), and a port (12) for receiving the secondary fluid that is mixed with the carrier fluid, (b) a ramp-like restriction (4) portion which is located downstream of the body's inlet (8) and upstream of the secondary fluid port (12) and configured so as to decrease the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (c) a ramp-like expansion (14) portion which is located downstream of the secondary fluid port (12) and upstream of the body's outlet (15) and configured so as to increase the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (d) a throat (6) portion which is situated between the restriction (4) and expansion (14) portions, and (e) a cavity (16) in the throat (6) that extends from its internal wall and into the body, with the port (12) entering the flow passage at a location in the throat cavity (16), and wherein this cavity is configured so to promote within it a vortical flow of the secondary fluid.
Abstract:
A spray dispenser is configured to generate a swirled output spray pattern 152 with improved rotating or angular velocity ω and smaller sprayed droplet size. Cup-shaped nozzle member 60 has a cylindrical side wall 62 surrounding a central longitudinal axis 64 and has a circular closed end wall 68 with at least one exit aperture 74 passing through the end wall. At least one enhanced swirl inducing mist generating structure is formed in an inner surface 70 of the end wall, and including a pair of opposed inwardly tapered offset power nozzle channels 80, 82 terminating in an interaction chamber 84 surrounding the exit aperture 74. The power nozzle channels generate opposing offset flows which are aimed to very efficiently generate a vortex of fluid which projects distally from the exit aperture as a swirled spray of small droplets 152 having a rapid angular velocity.