Power Sprayer Nozzle Assembly with Coanda Water Shield
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Solution Overview
Problem
Conventional power sprayers for kitchen faucets lack versatility in operation modes and fail to efficiently generate a continuous sheet-like water shield around a stream, limiting their effectiveness in cleaning tasks.
Innovation Solution
A power sprayer with a control mechanism that includes a trigger and button-activated valve assembly, allowing for multiple operational modes, and a nozzle assembly that produces a laminar stream surrounded by a continuous sheet of water through a cartridge assembly with a flow straightener and laminar flow nozzle, utilizing the Coanda effect to create a splash barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional power sprayers are used, then the device structure is simple, but the operational versatility is limited
Solution Approach 1:
The patent implements dynamic operational modes through a control mechanism with trigger and button actuators that allow the sprayer to switch between different water delivery modes (spray, stream, and power spray with water shield). The valve assembly dynamically redirects water flow based on actuator position, providing operational versatility without requiring multiple separate devices.
Solution Approach 2:
The sprayer head is designed to perform multiple functions through a single device. The cartridge assembly can deliver regular spray, continuous stream, and power spray with water shield formation. The control mechanism integrates multiple actuators (trigger for on/off, button for mode selection) to achieve universal cleaning capabilities across different task requirements.
2Adaptability or versatility
If conventional nozzles are used, then the device complexity is low, but the ability to generate continuous sheet-like water shield is insufficient
Solution Approach 1:
The nozzle assembly incorporates specialized components with specific local functions: the flow straightener creates laminar flow in a specific region, the laminar flow nozzle generates a coherent water stream, and the cartridge geometry is designed to utilize the Coanda effect to form a water shield. Each component has optimized local characteristics that collectively enable water shield generation.
Solution Approach 2:
The patent utilizes hydraulic principles through the Coanda effect, where the water stream adheres to the curved surface of the cartridge assembly and forms a continuous sheet-like water shield. The flow straightener and laminar flow nozzle create controlled hydraulic conditions that enable this effect, using fluid dynamics rather than mechanical structures to achieve the water shield.
3Productivity
If conventional spray patterns are used, then the manufacturing is simple, but the cleaning effectiveness by stripping particles is reduced
Solution Approach 1:
The cartridge assembly changes the physical parameters of water flow to enhance cleaning effectiveness. The flow straightener transforms turbulent flow into laminar flow, the laminar flow nozzle produces a coherent stream with specific velocity and pressure characteristics, and the Coanda effect creates a water shield with extended contact time. These parameter changes enable particle stripping without requiring mechanical scraping.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a versatile cleaning experience with a central laminar stream and a surrounding water shield, enhancing cleaning efficiency by stripping particles from surfaces and facilitating effective cleaning without mechanical scraping.
Implementation Method 1
A nozzle assembly configured to generate a continuous sheet-like water shield around a stream of water
Implementation Method 2
utilizing the Coanda effect to create a splash barrier
Data Source
AI summary
A power sprayer or spray device for use with a faucet. The spray device may include a spray mode and a stream mode of operation.