Carpet Extractor Suction Interrupt for Extended Cleaning Dwell Time
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Solution Overview
Problem
Traditional carpet extractors have difficulty extending the dwell time of cleaning solution on heavily soiled areas, which can impact cleaning effectiveness.
Innovation Solution
The method involves using a suction nozzle with a mechanism to selectively interrupt suction, either by venting or reducing airflow, allowing the cleaning solution to dwell longer on the surface before being extracted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous suction is applied to remove cleaning fluid from the surface, then the fluid recovery efficiency is improved, but the dwell time of cleaning solution on the surface is reduced
Solution Approach 1:
The suction mechanism operates periodically rather than continuously, with cycles of suction application and interruption. This allows the cleaning solution to dwell on the surface during interruption phases while still achieving fluid recovery during suction phases, resolving the contradiction between recovery efficiency and dwell time.
Solution Approach 2:
The suction force is made dynamic and adjustable rather than static and continuous. By varying the suction intensity and duration, the system can optimize both the dwell time for chemical action and the subsequent fluid recovery, allowing adaptation to different cleaning requirements.
2Productivity
If suction force is increased to improve fluid extraction, then the fluid recovery rate is improved, but the cleaning solution dwell time on heavily soiled areas is reduced
Solution Approach 1:
The suction is applied in periodic cycles with controlled duration and intensity. During each cycle, there are phases of suction application for fluid extraction followed by interruption phases that allow extended dwell time on heavily soiled areas, thereby achieving both high extraction rates and adequate dwell time.
Solution Approach 2:
The suction force can be differentially applied or timed differently for different areas. Heavily soiled areas receive extended dwell time through suction interruption, while other areas maintain normal suction extraction, allowing localized optimization of both parameters.
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 approach increases the dwell time of the cleaning solution on the surface, enhancing cleaning performance and effectiveness, especially on extensively soiled areas.
Implementation Method 1
a suction source in fluid communication with the working air conduit to draw the cleaning fluid from the surface to be cleaned and through the nozzle and the working air conduit to the recovery tank
Implementation Method 2
selectively interrupting the suction to the surface for a selected time to increase dwell time of the cleaning fluid on the surface, wherein selectively interrupting the suction comprises at least one of venting the suction or reducing a working airflow at the suction nozzle
Data Source
AI summary
A method of cleaning a surface with an extractor having a fluid supply system and a fluid recovery system includes applying a cleaning fluid to a surface, applying suction to the surface to remove the applied cleaning fluid from the surface, and selectively interrupting the suction to the surface for a selected time to increase dwell time of the cleaning fluid on the surface.