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公开(公告)号：US20230010574A1
公开(公告)日：2023-01-12
申请号：US17858571
申请日：2022-07-06
Applicant: DLHBOWLES, INC.
Inventor： Chunling Zhao , Aakash Deora
Abstract: Disclosed includes embodiments of a pulsed spray nozzle assembly, comprising a nozzle housing having a cavity with an inlet configured to receive a flow of fluid therein. A flow conditioning insert configured to be inserted inside the cavity of the housing to communicate fluid from the inlet to an interaction region downstream from the flow conditioning insert along an inlet axis within the housing, a step may extend from an inner surface of the cavity to assist to create turbulent flow in the interaction region. An outlet along the housing in communication with the interaction region, wherein the fluid is configured to be dispensed from the outlet having a pulsed spray pattern along an outlet axis that is generally perpendicular to the inlet axis.
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公开(公告)号：US11548479B2
公开(公告)日：2023-01-10
申请号：US15769105
申请日：2016-10-19
Applicant: DLHBOWLES, INC.
Inventor： Shridhar Gopalan , Chunling Zhao , Zachary Kline
Abstract: A micro-sized structure and construction method for a fluidic oscillator wash or spray nozzle (100 or 250) has a nozzle housing (110 or 252) enclosing an interior cavity (112 or 262) which receives an insert (114 or 254) having internal fluid passages defining first and second power nozzles (120, 122 or 280, 282). The power nozzles receive pressurized fluid (130) flowing through the interior cavity of the housing, where the fluid flows into the cavity at the bottom of the housing and flows upwardly to inlets (140, 142) for the power nozzles so that accelerating first and second fluid flows are aimed by the power nozzles toward one another in an interaction region (154 or 284) which exhausts laterally along a spray axis through a horn-shaped throat defined partly within the insert and partly within the flared spray outlet orifice (160 or 290) defined through the sidewall (162) in the housing.
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公开(公告)号：US20180029566A1
公开(公告)日：2018-02-01
申请号：US15433883
申请日：2017-02-15
Applicant: dlhBowles, Inc.
Inventor： Shridhar Gopalan , Chunling Zhao , Andrew Cameron
CPC classification number: B05B15/68 , B05B1/04 , B05B1/046 , B05B1/10 , B05B1/267 , B60S1/46 , B60S1/52
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：US12285769B2
公开(公告)日：2025-04-29
申请号：US17858571
申请日：2022-07-06
Applicant: DLHBOWLES, INC.
Inventor： Chunling Zhao , Aakash Deora
Abstract: Disclosed includes embodiments of a pulsed spray nozzle assembly, comprising a nozzle housing having a cavity with an inlet configured to receive a flow of fluid therein. A flow conditioning insert configured to be inserted inside the cavity of the housing to communicate fluid from the inlet to an interaction region downstream from the flow conditioning insert along an inlet axis within the housing, a step may extend from an inner surface of the cavity to assist to create turbulent flow in the interaction region. An outlet along the housing in communication with the interaction region, wherein the fluid is configured to be dispensed from the outlet having a pulsed spray pattern along an outlet axis that is generally perpendicular to the inlet axis.
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公开(公告)号：US20240116061A1
公开(公告)日：2024-04-11
申请号：US18544638
申请日：2023-12-19
Applicant: DLHBOWLES, INC.
Inventor： Chunling Zhao
Abstract: Provided is a fluidic oscillator circuit for a nozzle assembly configured to generate oscillating sprays of fluid from an outlet of the nozzle assembly and to improve spray performance of fluid having low temperatures or high viscosity. In one embodiment, provided is an interaction region for a fluidic oscillator circuit that includes an apex protrusion shaped to assist with generating vortices within the interaction region. In another embodiment, provided is an interaction region for a fluidic oscillator having a power nozzle that includes at least one finger protrusion that lengthens the power nozzle to create jets of fluid in the interaction region that are less diffused to improve cold performance of the fluidic oscillator circuit.
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Patent Agency Ranking
公开(公告)号：US11305297B2
公开(公告)日：2022-04-19
申请号：US16000141
申请日：2018-06-05
Applicant: DLHBOWLES, INC.
Inventor： Edward Han , Shridhar Gopalan , Chunling Zhao
Abstract: The invention relates to various low flow rate fluidic nozzle inserts having a reverse mushroom-shaped mushroom insert geometry that are useful for a wide range of spraying and cleaning applications. In one embodiment, the present invention relates to fluidic nozzle inserts that are able to perform at low flow rates with geometrical and dimensional limitations. In still another embodiment, the present invention relates to compact fluidic nozzle inserts that provide a manner by which to attain a desired level of performance in a fluidic nozzle assembly for small scale applications at low flow rates.
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公开(公告)号：US11104305B2
公开(公告)日：2021-08-31
申请号：US16235459
申请日：2018-12-28
Applicant: DLHBOWLES, INC.
Inventor： Chunling Zhao , Shridhar Gopalan
Abstract: The present disclosure relates to automated or remotely controlled methods and apparatuses for cleaning and drying soiled external 2-D or 3-D image sensor surfaces such as objective lenses on Light Detection and Ranging (“LIDAR”) sensors when mounted in a configuration that is exposed to dirty environments.
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公开(公告)号：US10987681B2
公开(公告)日：2021-04-27
申请号：US15759242
申请日：2017-11-16
Applicant: DLHBOWLES, INC.
Inventor： Chunling Zhao , Shridhar Gopalan , Zachary Kline
Abstract: A miniature low-flow, fluid conserving washer nozzle has an elongated housing enclosing an interior volume aligned along an inlet axis which receives an elongated insert member with internal fluid passages defining first and second power nozzles, so that accelerating first and second fluid flows are aimed by the first and second power nozzles toward one another in an interaction region defined within the insert with an insert throat to aim spray laterally or transversely along a spray axis through an aligned sidewall aperture in the nozzle housing. The nozzle may generate a planar oscillating sweeping fan of spray, produced by fluidic oscillations at low flow rates, typically 150-300 ml/min at 25 psi. The fan of spray generated may be varied from 20° to 70° or about 15°-60°. The outer dimensions of spray head could be as small as 3.5 mm. The fluidic geometry is also capable of spraying high viscosity liquids up to 25 CP or up to 15 CP.
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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：US10525937B2
公开(公告)日：2020-01-07
申请号：US15304428
申请日：2015-04-16
Applicant: dlhBOWLES, Inc.
Inventor： Chunling Zhao , Bryan Fung
Abstract: A unitary or one-piece integral image sensor and washing nozzle assembly or module 100, 300, 400 is configured to enclose, protect, and aim multiple image sensors and effectively clean multiple lenses (e.g., 102, 104) simultaneously while using only one nozzle head (e.g., 120, 320 or 420) with at least one optimized spray pattern (e.g., 122). The module includes a housing with a cover or bezel (e.g., 106) that supports and orients the lenses and the nozzle head aims spray at the lenses along a spray axis, with the relative heights and spacings of the nozzle's outlet orifice (e.g., 174) and the surfaces of the lenses (e.g., 102, 104) selected so that a particular spray either glances across and washes a nearest lens (e.g., 102) or impacts and washes over a farthest lens (e.g., 104).
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