Concurrent Prespray and Rinse Cleaning for Faster Carpet Extraction
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Solution Overview
Problem
Existing cleaning machines are inefficient due to the need to repeatedly switch between spray guns and extraction wands, and the time-consuming process of managing multiple hoses, which leads to increased operational time and potential tangling of hoses.
Innovation Solution
An integrated multi-functional cleaning apparatus with a prespray unit and a rinse unit, both connected to a water service line, allowing concurrent use of the spray gun and extraction wand, and a dual hose reel system to manage hoses and cords efficiently, enabling simultaneous spraying and rinsing without the need for constant switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single spray gun and extraction wand are used sequentially, then the cleaning process can be completed with simpler equipment, but the operational time increases due to repeated switching between tools and supply jars
Solution Approach 1:
The patent combines the prespray and rinse functions into a single integrated cleaning system. The spray gun is modified to accept both prespray and rinse supply tubes, and the extraction wand is integrated with the rinse function. This merging eliminates the need to switch between separate tools and supply jars, allowing continuous operation without tool changes.
Solution Approach 2:
The spray gun is designed with universal functionality to perform both prespraying and rinsing operations. By incorporating both supply tube connections and a selection valve, the single spray gun can switch between different cleaning solutions without requiring separate devices, thereby improving operational efficiency.
2Productivity
If multiple hoses are used for prespray and rinse functions, then concurrent spraying and rinsing is enabled, but hose management becomes complex and prone to tangling
Solution Approach 1:
The patent implements a nested hose arrangement where the rinse hose is positioned inside the prespray hose. This nesting configuration allows both hoses to be managed as a single bundled unit, preventing tangling during movement and storage while enabling concurrent delivery of prespray and rinse solutions to different locations.
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
This solution reduces operational time, enhances efficiency by allowing simultaneous spraying and rinsing, and simplifies the movement and storage of hoses and cords, resulting in a more efficient and cost-effective cleaning process.
Implementation Method 1
a water-driven proportional pump for mixing a prespray with the water from the service line to provide a diluted prespray
Implementation Method 2
a motor-driven triplex pump for increasing the pressure of the water from the service line
Implementation Method 3
a chemical injector is included for mixing a rinse agent with the pressurized water to provide a diluted rinse agent
Implementation Method 4
The diluted prespray is delivered to a spray gun and sprayed on areas of the carpet
Implementation Method 5
The diluted rinse agent or water only is delivered to an extraction wand and sprayed on pre sprayed areas of the carpet and immediately extracted using the extractor wand
Data Source
AI summary
A soiled surface cleaning system is described for pre spraying soiled surface areas, and for rinsing and extracting the pre sprayed soiled surface areas, wherein the pre spraying of the soiled surface areas does not have to be stopped in order to perform the rinsing and extracting of the pre sprayed soiled surface areas. The system includes a prespray unit having a proportional pump driven by water from a water service line. The pump mixes the water with prespray and feeds the diluted prespray to a spray gun. The system also includes a rinse unit having a triplex pump that receives water from the water service line, increases the water's pressure, and feeds the pressurized water to an injector. The injector mixes the water with a rinse agent and feeds the diluted rinse agent to a nozzle arrangement on an extraction wand. In use, areas of the soiled surface are first pre sprayed with the diluted prespray. The diluted prespray is allowed to dwell on the pre sprayed areas. After the dwell time of the diluted prespray on a pre sprayed area has elapsed, the pre sprayed area is rinsed and extracted with the extraction wand. This system allows the prespray unit to continue pre spraying soiled areas at the same time as the rinse unit is rinsing and extracting pre sprayed areas having elapsed dwell times.