Rotary Hard Surface Cleaning Head With Airflow Speed Control
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Solution Overview
Problem
Conventional hard surface cleaning devices face challenges such as damaging delicate surfaces due to high pressures and being cumbersome for homeowners, as they require truck-mounted or large portable systems for pressurized water and wastewater collection.
Innovation Solution
A self-contained hard-surface cleaning system with a portable, adjustable cleaning head that uses a pressurized fluid source and vacuum system, allowing for controlled pressure and rotational speed of the spray assembly, and includes a rim with adjustable flow-control inlets to manage airflow and rotational speed, enabling effective cleaning at various pressures without damaging surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high pressure is used to clean hard surfaces, then cleaning effectiveness is improved, but delicate surfaces are damaged
Solution Approach 1:
The patent applies parameter changes by using a rotary spray bar that rotates at controlled speeds (e.g., 100-2000 RPM) to distribute pressurized water across the surface. This rotational motion changes the effective pressure parameters, allowing high-pressure cleaning without concentrated force that would damage delicate surfaces like tiles and grout.
2Object-affected harmful factors
If pressure is lowered to protect delicate surfaces, then surface damage is prevented, but rotational speed of the spray bar decreases
Solution Approach 1:
The patent employs dynamics by making the spray bar rotatable rather than stationary. The rotational motion is driven by pressurized water flow itself, creating a dynamic system where the spray bar automatically rotates at speeds proportional to the water pressure. This allows the system to maintain effective cleaning speed while distributing pressure dynamically across the surface.
3Stress or pressure
If truck-mounted or large portable pressurization systems are used, then high pressure cleaning capability is achieved, but device complexity and portability are reduced
Solution Approach 1:
The patent extracts the essential high-pressure cleaning function from complex truck-mounted systems and implements it in a simplified portable format. By using a self-contained rotary spray bar mechanism that uses water flow itself to generate rotation, the system eliminates the need for complex motors, transmissions, and control systems while maintaining effective cleaning pressure.
4Device complexity
If conventional spray bars are used without rotation, then system simplicity is maintained, but cleaning effectiveness on hard surfaces is reduced
Solution Approach 1:
The patent implements periodic action through the rotational motion of the spray bar. Instead of a static spray pattern, the rotating spray bar continuously moves the spray stream across different areas of the surface, creating a periodic cleaning action that significantly improves cleaning effectiveness while maintaining system simplicity.
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 system effectively cleans hard surfaces like concrete, decking, and tiles while being compact and user-friendly, allowing for adjustable pressure and rotational speed to accommodate different surfaces without the need for large, cumbersome equipment.
Implementation Method 1
A self-contained hard-surface cleaning system with a portable, adjustable cleaning head that uses a pressurized fluid source
Implementation Method 2
vacuum system, allowing for controlled pressure and rotational speed of the spray assembly
Data Source
AI summary
A hard surface cleaner having a cleaning head with rotational assist. In one embodiment, the cleaning head includes a housing having a fluid-supply and vacuum inlets. The housing also includes at least one flow-control inlet arranged with the vacuum inlet to draw a flow of air into the housing through the flow-control inlet. The cleaning head further includes a spray assembly at least partially enclosed within the housing. The spray assembly includes a shaft, at least one spray nozzle operably coupled to the shaft, and a plurality of fins also operably coupled to the shaft. The spray nozzle is configured to receive a pressurized fluid from the fluid-supply inlet and to rotate about the shaft by delivering the pressurized fluid toward a floor surface. The fins are positioned at least partially within the flow of air through the flow control inlet to control the rotational speed of the spray assembly.