Floor Cleaner Shutoff Float Mechanism for Fluid Overflow Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing floor cleaners lack an effective mechanism to prevent excessive fluid from being drawn into the recovery tank, leading to inefficiencies and potential flooding during inclined use or when the fluid level reaches a certain point.
Innovation Solution
A shutoff float mechanism is integrated into the recovery tank, which engages and disengages with interconnecting members to retain the closure at a predetermined distance from the suction air outlet, allowing air flow when the fluid level is low and inhibiting it when the level rises, thereby controlling fluid intake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the suction air outlet remains open to allow continuous airflow, then the vacuum source can maintain continuous suction capability, but excessive fluid enters the recovery tank causing flooding and operational inefficiency
Solution Approach 1:
The suction air outlet is made dynamic through the float mechanism. When fluid level is low, the outlet remains open for continuous suction. When fluid reaches a predetermined level, the float rises and closes the outlet, dynamically adjusting the system state based on fluid level conditions.
Solution Approach 2:
The float mechanism provides continuous feedback on fluid level in the recovery tank. When the fluid level reaches a predetermined threshold, the float rises and triggers closure of the suction air outlet, creating a feedback control system that prevents excessive fluid intake while maintaining continuous operation capability.
2Reliability
If the suction air outlet is closed to prevent fluid from entering, then flooding is prevented, but air flow and suction capability are inhibited when fluid level is low
Solution Approach 1:
The suction air outlet closure is made dynamic rather than static. The float mechanism allows the outlet to be open when fluid level is low (maintaining suction capability) and automatically closes it when fluid level reaches the predetermined threshold (preventing flooding), thus resolving the contradiction between reliability and productivity.
Solution Approach 2:
The system uses the float mechanism to automatically control the suction air outlet based on fluid level. The float rises with the fluid level and automatically triggers closure of the outlet without external intervention, enabling the system to self-regulate and prevent flooding while maintaining productivity.
3Reliability
If a float mechanism is added to control fluid level, then excessive fluid intake is prevented, but device complexity increases
Solution Approach 1:
The float mechanism serves multiple functions: it detects fluid level, actuates the closure mechanism, and controls the suction air outlet. By making one component perform multiple functions, the patent achieves reliable fluid level control without proportionally increasing overall device complexity.
Solution Approach 2:
The float mechanism is integrated with the closure and suction air outlet control functions. Rather than adding a separate complex control system, the patent merges the float detection mechanism with the closure actuation and outlet control, achieving fluid level control with minimal additional complexity.
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 prevents excessive fluid from entering the recovery tank, reducing the risk of flooding and maintaining efficient operation during inclined use by ensuring the shutoff float moves to the correct position based on fluid levels, optimizing suction airflow.
Implementation Method 1
a shutoff float (32) positionable in a first position that allows air flow through the suction air outlet (50) when the fluid in the recovery tank (20) is below a predetermined level and a second position that inhibits suction air flow through the suction air outlet (50) when the fluid reaches or exceeds a desired level
Data Source
AI summary
A floor cleaner including a recovery. The recovery tank is configured to contain a fluid drawn through a suction inlet from a surface to be cleaned by a vacuum source. The recovery tank includes a shutoff float. The shutoff float is movable between a first position and a second position. The shutoff float includes a float body, a float closure, and a first interconnecting member. The first interconnecting member engages a second interconnecting member to retain the float in the first position. In the first position, the shutoff float is spaced a distance from the suction air outlet, allowing air flow through the suction air outlet. The first interconnecting member engages the second interconnecting member to retain the shutoff float in the first position. In the second position, the shutoff float is adjacent the suction air outlet, inhibiting air flow through the suction air outlet.