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公开(公告)号：US10532367B2
公开(公告)日：2020-01-14
申请号：US15406702
申请日：2017-01-14
Applicant: dlhBowles, Inc.
Inventor： Shridhar Gopalan , Chunling Zhao , Andrew Cameron
Abstract: A nozzle assembly includes a fluidic oscillator 100 operating on a pressurized fluid to generate an oscillating spray of fluid droplets, and the oscillator aims fluid jets from first, second and third power nozzles 114A, 114B, 114C into an interaction chamber 118 and toward an upwardly projecting island protuberance 126 defining first, second and third island wall segments. The outermost jets 114A, 114B are aimed at an obtuse angle of 100 to 140 degrees along axes which intersect beyond the island at a Jet intersection point, J1. The upstream end of interaction chamber 118 is defined by first and second laterally offset concave wall surfaces 142, 152 which define left side and right side vortex generating areas so that fluid jet steering vortices may be alternately formed and then displaced distally and shed to steer the fluid jet laterally within interaction chamber 118.
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公开(公告)号：US10526939B2
公开(公告)日：2020-01-07
申请号：US15952755
申请日：2018-04-13
Applicant: DLHBOWLES, INC.
Inventor： Shridhar Gopalan , Corey Zamenski
Abstract: Provided is a bi-directional PCV valve assembly, system and method. The bi-directional PCV valve may include a fluidic geometry that allows for a flow of fluid a high flow rate in one direction, forward flow, and a low flow rate in the opposite direction, reverse flow. The reverse flow includes a swirling flow that increases the pressure drop and reduces the flow rate to a third of the flow rate of the forward flow. The disclosed assembly produces a strong swirling flow (vortex) in the reverse direction and an efficient (low pressure drop) flow in the forward direction.
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公开(公告)号：US20170341090A1
公开(公告)日：2017-11-30
申请号：US15591913
申请日：2017-05-10
Applicant: dlhBowles, Inc.
Inventor： Andrew Cameron , Evan Hartranft , Shridhar Gopalan
IPC: B05B1/04
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.
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公开(公告)号：US20220369575A1
公开(公告)日：2022-11-24
申请号：US17880471
申请日：2022-08-03
Applicant: DLHBOWLES, INC.
Inventor： Reza Ronaghian , Benjamin D. Hasday , Gregory A. Russell , Shridhar Gopalan , Christopher F. South
IPC: A01G25/02
Abstract: A clog resistant online vortex emitter assembly and method uses a double-sided circuit and a series of vortex chambers of optimized dimensions to create a pressure drop with large dimensions and good clog resistance. The vortex emitter allows for pressure regulation without moving parts and includes a unitary body having a first surface and a second surface opposite the first surface and a multi-lumen flow channel providing fluid communication between the first surface and the second surface, wherein said unitary body is a double-sided circuit with a plurality of vortex chambers with lumens aligned in series. The vortex chamber includes an inlet region, a power nozzle, an interaction region and a throat, the inlet region is in fluid communication with the interaction region through the power nozzle. The plurality of vortex chambers includes dimensions to create a pressure drop and be attached to an outer surface of an irrigation tube.
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公开(公告)号：US11034342B2
公开(公告)日：2021-06-15
申请号：US16484872
申请日：2018-02-21
Applicant: DLHBOWLES, INC.
Inventor： Shridhar Gopalan , Corey Zamenski
Abstract: A vacuum generator/amplifier system for gas applications and a brake booster generation method uses a vacuum amplifier system including a multi-lumen defining member comprising a modified venturi geometry having a converging section leading to a throat (lumen segment of minimum ID diameter), followed by a straight section culminating in to a diverging section and a port for output vacuum which is located after the throat at the beginning of the straight section. The converging section has a sinusoidal shape leading to the point of convergence, also called the throat, with a minimum internal lumen diameter D, and generates an amplified vacuum at the output with a gain ratio of four to one, with substantially reduced parasitic losses, even at low flows.
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Patent Agency Ranking
公开(公告)号：US20210170429A1
公开(公告)日：2021-06-10
申请号：US16071100
申请日：2017-01-27
Applicant: DLHBOWLES, INC.
Inventor： Shridhar Gopalan , Evan Hartranft , Andrew D. Cameron , Gregory A. Russell
Abstract: Spray nozzle assembly (300) is configured to generate a swirled spray (312) with improved rotating velocity w and smaller uniform droplet size. Cup-shaped nozzle member (300) has a body portion (318) with a cylindrical side wall (320) surrounding a central longitudinal spray axis (322), a circular closed end wall (324) and an exit aperture (310) coaxial with the spray axis (322) and defined through the end wall (324). A fluid dynamic circuit (330) is formed in an inner surface (326) of end wall (324) and includes three inwardly tapered power nozzles (302, 304, 306) terminating in an interaction region (308) which is exhausted via the exit aperture (310). The power nozzles have respective longitudinal axes (334, 362, 382) offset with respect to the spray axis (322) with corresponding non-tangential angles of attack (352, 374, 394) configured to efficiently cause a fluid vortex in interaction region (308).
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公开(公告)号：US10598058B2
公开(公告)日：2020-03-24
申请号：US16578627
申请日：2019-09-23
Applicant: DLHBOWLES, INC.
Inventor： Shridhar Gopalan , Jerry Thurber
Abstract: Provided is a PCV valve assembly that includes a fluidic geometry that allows for the flow of combustion fluid/gas to flow between an inlet and an outlet and switch between two modes of operation, (i) a radial or high flow mode, and (ii) a tangential or low flow mode, as dictated during the operation of the engine. At low vacuums, the fluidic equipped PCV valve assembly has been tuned to operate in the radial mode producing high flow rates due to low flow resistance. As vacuum increases, the PCV valve assembly is tuned to automatically switch modes. This may be enabled due to the shape of the fluidic geometry and the bypass channel which is adapted to vary the amount of flow between a first and a second control ports. The bypass channel allows the geometric fluidic pattern to switch between the high flow mode and the low flow mode.
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公开(公告)号：US20190381986A1
公开(公告)日：2019-12-19
申请号：US16484872
申请日：2018-02-21
Applicant: DLHBOWLES, INC.
Inventor： Shridhar Gopalan , Corey ZAMENSKI
Abstract: A vacuum generator/amplifier system for gas applications and a brake booster generation method uses a vacuum amplifier system including a multi-lumen defining member comprising a modified venturi geometry having a converging section leading to a throat (lumen segment of minimum ID diameter), followed by a straight section culminating in to a diverging section and a port for output vacuum which is located after the throat at the beginning of the straight section. The converging section has a sinusoidal shape leading to the point of convergence, also called the throat, with a minimum internal lumen diameter D, and generates an amplified vacuum at the output with a gain ratio of four to one, with substantially reduced parasitic losses, even at low flows.
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公开(公告)号：US10239083B2
公开(公告)日：2019-03-26
申请号：US15433883
申请日：2017-02-15
Applicant: dlhBowles, Inc.
Inventor： Shridhar Gopalan , Chunling Zhao , Andrew Cameron
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 5 mm 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.
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公开(公告)号：US10155232B2
公开(公告)日：2018-12-18
申请号：US15819384
申请日：2017-11-21
Applicant: DLHBOWLES, INC.
Inventor： Evan Hartranft , Shridhar Gopalan , Gregory Russell
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.
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