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公开(公告)号：US11872574B2
公开(公告)日：2024-01-16
申请号：US17073909
申请日：2020-10-19
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：US11806733B2
公开(公告)日：2023-11-07
申请号：US17402845
申请日：2021-08-16
Applicant: DLHBOWLES, INC.
Inventor： Chunling Zhao
CPC classification number: B05B1/16 , B05B1/046 , B05B1/14 , B60S1/00 , B60S1/56 , B05B1/04 , B05B1/08
Abstract: A low flow compact spray head design for cleaning applications, especially for camera lens wash includes a miniature spray nozzle head which is about 5 mm in diameter or less for a single direction spray nozzle and about 8 mm in diameter of less for a nozzle with multiple sprays. The washer fluid is fed from the bottom of nozzle along a flow axis and is separated into two flows via two power nozzles or inlets which turn the flows 90° to become opposing jets impinging upon each other inside an interaction region. Uniform stream lines are generated by the two direct facing jets and converge at the nozzle throat to become a uniform spray fan, which is on a plane perpendicular to the axis of cylindrical nozzle head. This fluidic circuit design enables a miniature size low flowrate nozzle to operate well consistently with low flow rate (e.g., a flow rate of about 150 mL/min to about 300 mL/min at 25 psi, or even a flow rate of about 250 mL/min at 25 psi or above, at a viscosity of about 25 CP) at cold temperate (−4° F. or lower) with 50 percent ethanol. This nozzle design is capable of generating two or more different oriented spray fans (e.g., fans spraying in opposing directions) from one single nozzle.
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公开(公告)号：US11712707B2
公开(公告)日：2023-08-01
申请号：US17093048
申请日：2020-11-09
Applicant: DLHBOWLES, INC.
Inventor： Chunling Zhao
IPC: B05B3/14
CPC classification number: B05B3/14
Abstract: Provided is a compact sized low flow rate fluidic nozzle insert. The fluidic nozzle insert may include a fluidic oscillator chip on a front face having a flat-top interaction region, and a manifold on a back face, located opposite the front face, to house fluid. The fluidic nozzle insert may further include at least one feed having a u-shape connecting the front face and back face for the transport of fluid from the manifold, at least one power nozzle oriented toward the front face for directing fluid from the at least one feed to the interaction region of the fluidic oscillator chip, and a v-shaped outlet at the bottom of the interaction region defined by two flat walls for the passage of fluid from the interaction region to the outside of the fluidic nozzle insert in a fan pattern. The produced spray fan pattern may be uniform and fluid nozzle may work well with high viscosity fluids.
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公开(公告)号：US11472375B2
公开(公告)日：2022-10-18
申请号：US16735083
申请日：2020-01-06
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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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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26.发明申请公开(公告)号：US20180345299A1
公开(公告)日：2018-12-06
申请号：US16000141
申请日：2018-06-05
Applicant: DLHBOWLES, INC.
Inventor： Edward Han , Shridhar Gopalan , Chunling Zhao
IPC: B05B1/00
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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