Carpet Extractor Suction Interrupt for Longer Solution Dwell
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Solution Overview
Problem
Traditional carpet extractors often struggle to maintain an optimal dwell time of cleaning solution on soiled areas, as the suction power is constant, which can lead to inadequate cleaning efficiency, especially on heavily soiled sections.
Innovation Solution
The extractor incorporates a mechanism to temporarily reduce suction at the floor nozzle, allowing the cleaning solution to dwell longer on the surface by opening a leak hole in the working air conduit, which can be manually or electromechanically controlled, enabling increased solution dwell time on heavily soiled areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If suction power is maintained at constant high level, then productivity is improved, but cleaning solution dwell time is reduced
Solution Approach 1:
The suction source operates in periodic cycles, alternating between high-power suction mode and reduced-power dwell mode. The controller automatically switches between these modes based on predetermined time intervals or cleaning progress, allowing the cleaning solution to dwell on heavily soiled areas during low-power phases while maintaining overall cleaning productivity through high-power phases.
Solution Approach 2:
The suction power is made dynamically adjustable rather than constant. The system transitions from static high-power operation to dynamic power modulation, where the suction source power level changes over time to match the cleaning requirements of different carpet zones, enabling both extended dwell time and maintained productivity.
2Productivity
If suction power is increased, then productivity is improved, but cleaning efficiency on heavily soiled areas deteriorates
Solution Approach 1:
The cleaning system applies different suction power levels to different spatial zones of the carpet. Heavily soiled areas receive extended dwell time with reduced suction power to allow thorough chemical action, while lightly soiled areas are quickly treated with high suction power. This localized quality adjustment ensures reliable cleaning effectiveness across varied soil conditions while maintaining overall productivity.
Solution Approach 2:
The controller implements periodic cycles of high-power and low-power suction. During low-power phases, the cleaning solution has adequate time to act on heavily soiled areas, ensuring cleaning effectiveness. During high-power phases, productivity is restored. This periodic alternation resolves the contradiction between cleaning reliability and productivity.
3Reliability
If dwell time is extended, then cleaning efficiency is improved, but productivity is reduced
Solution Approach 1:
The system uses periodic alternation between extended dwell time phases and high-speed suction phases. During dwell phases, cleaning effectiveness is maximized with prolonged solution contact time. During suction phases, productivity is maximized with rapid moisture extraction. The controller manages these periodic transitions to achieve both improved cleaning efficiency and maintained productivity.
Solution Approach 2:
The dwell time is made dynamic rather than uniformly extended throughout the cleaning process. The controller adjusts dwell time duration based on real-time or pre-programmed parameters, extending dwell time only when and where needed for heavily soiled areas, while maintaining shorter dwell times for lightly soiled areas, thus preserving overall productivity while improving cleaning effectiveness where required.
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 enhances cleaning performance by allowing the cleaning solution to remain on the surface for a longer period, improving the removal of dirt and debris, especially in areas that require more attention, without interrupting the agitation or fluid application.
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
the hydraulic connector fluidly coupled to the fluid delivery system and adapted to move the body to the second position when fluid is provided from the solution supply tank assembly to the fluid distributor
Data Source
AI summary
An extractor includes a fluid recovery system including a suction nozzle, a recovery tank assembly, and a suction source having an inlet fluidly connected to the recovery tank assembly and the suction nozzle through an air conduit and adapted to draw liquid through the suction nozzle and deposit the liquid in the recovery tank assembly. The extractor includes a body provided with the air conduit for movement between a first position wherein suction is unreduced and a second position wherein suction is reduced. The extractor includes a fluid delivery system including a solution supply tank assembly, a fluid distributor, and a conduit for depositing fluid onto a surface. The extractor includes a hydraulic connector operably coupled to the body and adapted to move the body between the first and second positions.