Dual-Path Bare Floor Nozzle for Wet-Dry Cleaning Switch
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Solution Overview
Problem
Current methods for cleaning bare floors are inefficient and require multiple tools, leading to physical exertion, incomplete dirt removal, and prolonged drying times due to the need for separate tools for dry and wet cleaning processes.
Innovation Solution
A floor cleaner with a base having both dry and wet suction openings, a pivotally connected handle, a recovery tank, and a motor/fan assembly that uses a diverter and actuator to switch between suction modes, allowing for simultaneous agitator positioning for dry and wet cleaning without accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate cleaning tools are used for dry pickup and wet cleaning, then each tool can be optimized for its specific function, but the device complexity increases and requires multiple tools to be managed
Solution Approach 1:
The patent combines multiple cleaning functions (dry pickup, wet pickup, and agitation) into a single integrated floor cleaner device. The base unit includes both a dry pickup nozzle and a wet pickup nozzle with squeegee, along with an agitator, allowing all cleaning operations to be performed by one tool rather than requiring separate broom, vacuum, and mop
Solution Approach 2:
The floor cleaner is designed as a universal device that can perform multiple cleaning functions: dry pickup of loose debris, wet pickup of soiled cleaning solution, and agitation of the cleaning solution. The single device replaces multiple specialized tools, providing multi-functionality for comprehensive floor cleaning
2Device complexity
If a single nozzle opening is used for both dry and wet pickup, then the device complexity is reduced, but the suction efficiency decreases due to interference between dry and wet cleaning paths
Solution Approach 1:
The nozzle assembly is segmented into separate functional paths: a dry pickup nozzle for removing loose debris and a wet pickup nozzle with squeegee for removing soiled cleaning solution. This segmentation allows each nozzle to be optimized for its specific function without interference from the other cleaning mode, maintaining high suction efficiency for both dry and wet operations
3Reliability
If cleaning solution is applied and agitated, then dirt is loosened from the floor surface, but the duration of action increases due to prolonged drying time required
Solution Approach 1:
The floor cleaner enables continuous cleaning action by immediately following agitation with wet pickup. The device agitates the cleaning solution to loosen dirt, then immediately uses the wet pickup nozzle with squeegee to remove the soiled cleaning solution from the floor surface, maintaining continuous useful action without interruption for drying
Solution Approach 2:
The device discards the soiled cleaning solution by immediately picking it up with the wet pickup nozzle after agitation. This prevents the soiled solution from remaining on the floor to air dry, thereby eliminating the prolonged drying time that would otherwise be required before the floor can be used again
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
Enables efficient dry and wet pickup and scrubbing with reduced physical effort, minimizing residual cleaning solution and shortening drying times, allowing for immediate foot traffic after use.
Implementation Method 1
a motor/fan assembly mounted to one of the handle and the base and adapted to create a working air flow in the working air conduit from at least one of the dry floor suction opening and the wet floor suction opening and to the recovery tank
Implementation Method 2
capable of wet pickup through a first nozzle opening with the aid of a squeegee
Data Source
AI summary
The invention relates to a bare floor cleaner capable of wet pickup through a first nozzle opening with the aid of a squeegee, wet scrubbing with an agitator, and dry pickup through a second nozzle opening. The bare floor cleaner comprises a dual-path nozzle assembly having a wet suction path in communication with the first nozzle opening and a dry suction path in communication with the second nozzle opening. A diverter valve selectively controls fluid communication between a suction source and one of the first and second nozzle openings for conversion between wet and dry modes. The bare floor cleaner further comprises a single actuator that controls the positions of the agitator and of the diverter valve. As a result, the cleaning mode of the bare floor cleaner can be controlled with a single switch that is preferably located on the handle assembly for convenient access by a user.