公开(公告)号：US20180015487A1

公开(公告)日：2018-01-18

申请号：US15714768

申请日：2017-09-25

Applicant: DLHBOWLES, INC.

Inventor： Gregory RUSSELL ,  Shridhar GOPALAN ,  Christopher SOUTH ,  Russell HESTER ,  Eric KOEHLER ,  Kerrie ALLEN ,  Srinivasaiah SRIDHARA

IPC: B05B1/02 ,  B05B1/30 ,  A01G25/00 ,  B05B15/10 ,  B05B1/08 ,  B05B15/06 ,  B05B1/14

Abstract: A long throw Pop-Up Irrigation Nozzle assembly has no oscillating or rotating parts and includes a cylindrical body having a fluid inlet and a sidewall defining at least one fluidic circuit configured to generate a selected spray pattern when irrigation fluid flows through the body. In order to throw long distance, droplet velocity, droplet size and droplet initial aim angle determine the throw to provide a low precipitation rate (“PR”) for fluidic sprays. The nozzle assembly and method of the present invention achieve a PR of 1 in/hr or less and good spray distribution with a scheduling coefficient (“SC”) of about 1.5 without utilizing any moving components to provide a significantly more cost effective nozzle assembly, as compared to prior art rotator nozzles.

公开(公告)号：US20190209980A1

公开(公告)日：2019-07-11

申请号：US16324154

申请日：2017-10-02

Applicant: DLHBOWLES, INC.

Inventor： Corey ZAMENSKI ,  Shridhar GOPALAN

IPC: B01F5/04 ,  B01F3/02

CPC classification number: B01F5/043 ,  B01F3/02 ,  B01F2005/0433 ,  B01F2005/0438 ,  B01F2005/0441 ,  B01F2215/0422 ,  B01F2215/0431

Abstract: An eductor type gas to gas aspirator having improved entrainment efficiency includes a motive gas nozzle configured with a distal tip having an arcuate internal profile that converges in a downstream direction. The arcuate internal profile preferably has sinusoidal convergence curvature. In a preferred embodiment, the length Ls of the nozzle tip is between 2D and 4D where D is the diameter of said outlet orifice, and the distance Ld between nozzle outlet orifice and the upstream end of and out let barrel passage is between 0 and D.

公开(公告)号：US20190388909A1

公开(公告)日：2019-12-26

申请号：US15759242

申请日：2017-11-16

Applicant: DLHBOWLES, INC.

Inventor： Chunling ZHAO ,  Shridhar GOPALAN ,  Zachary KLINE

IPC: B05B1/08 ,  B05B1/04 ,  B08B3/02 ,  B60S1/52

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.

公开(公告)号：US20170350081A1

公开(公告)日：2017-12-07

申请号：US15687162

申请日：2017-08-25

Applicant: DLHBOWLES, Inc.

Inventor： Shridhar GOPALAN ,  Dharapuram N. SRINATH ,  Christopher SOUTH

IPC: E01H1/08 ,  A01G1/12 ,  B05B1/00 ,  B05B1/08

CPC classification number: E01H1/0809 ,  A01G20/43 ,  B05B1/005 ,  B05B1/08

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 care 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 stream with minimal pressure drop. Downstream of the power nozzle, first and second control ports CP1, CP2 are in fluid communication with the high velocity stream 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.

公开(公告)号：US20190061702A1

公开(公告)日：2019-02-28

申请号：US15769105

申请日：2016-10-19

Applicant: DLHBOWLES, INC.

Inventor： Shridhar GOPALAN ,  Chunling ZHAO ,  Zachary KLINE

IPC: B60S1/52 ,  B05B1/08 ,  B05B1/14 ,  B60S1/56

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.

公开(公告)号：US20180274409A1

公开(公告)日：2018-09-27

申请号：US15952755

申请日：2018-04-13

Applicant: DLHBOWLES, INC.

Inventor： Shridhar GOPALAN ,  Corey ZAMENSKI

IPC: F01M13/00 ,  F01M13/02 ,  F16K17/18

CPC classification number: F01M13/0011 ,  F01M13/023 ,  F01M13/028 ,  F16K17/18 ,  G05D7/0186

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.

公开(公告)号：US20170216852A1

公开(公告)日：2017-08-03

申请号：US15433845

申请日：2017-02-15

Applicant: dlhBowles, Inc.

Inventor： Shridhar GOPALAN ,  Evan HARTRANFT ,  Russell HESTER

IPC: B05B1/08 ,  B05B11/00 ,  B65D83/28 ,  B05B1/14

CPC classification number: B05B1/08

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.