- Patent Title: Cold weather low flow miniature spray nozzle assembly and method
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Application No.: US16255326Application Date: 2019-01-23
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Publication No.: US11141742B2Publication Date: 2021-10-12
- Inventor: Chunling Zhao
- Applicant: DLHBOWLES, INC.
- Applicant Address: US OH Canton
- Assignee: DLHBOWLES, INC.
- Current Assignee: DLHBOWLES, INC.
- Current Assignee Address: US OH Canton
- Agency: McDonald Hopkins LLC
- Main IPC: B05B1/04
- IPC: B05B1/04 ; B05B1/08 ; B05B1/16 ; B05B1/14 ; B60S1/00 ; B60S1/56

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.
Public/Granted literature
- US20190151865A1 COLD WEATHER LOW FLOW MINIATURE SPRAY NOZZLE ASSEMBLY AND METHOD Public/Granted day:2019-05-23
Information query
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