Extraction Cleaner Suction Changeover for Position-Adaptive Cleaning
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Solution Overview
Problem
Existing surface treatment apparatuses, such as extraction cleaners, face challenges in efficiently managing fluid distribution and debris collection based on the maneuvering position of the device, leading to suboptimal cleaning performance.
Innovation Solution
The extraction cleaner incorporates a suction changeover valve that automatically switches between base and cleaning tool suction states based on the upright body's position, and a diverter valve that adjusts between nozzle and chamber suction states, allowing for seamless fluid distribution and debris collection during forward and rearward strokes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the extraction cleaner uses a single suction configuration, then the device structure is simple, but the cleaning performance is suboptimal when maneuvering in different positions
Solution Approach 1:
The patent implements a dynamic suction configuration system where the suction inlet can switch between different positions (base suction inlet and cleaning tool suction inlet) depending on the maneuvering position of the extraction cleaner. This dynamic adaptation allows the device to optimize cleaning performance for different operational scenarios while maintaining a relatively simple overall structure through automated position-based switching.
2Productivity
If the extraction cleaner applies fluid continuously, then the cleaning coverage is comprehensive, but the fluid distribution efficiency decreases when maneuvering position changes
Solution Approach 1:
The patent employs dynamic fluid distribution control where the fluid dispensing system adapts its operation based on the maneuvering position of the cleaner. The system can selectively activate different fluid dispensing nozzles (base nozzles or cleaning tool nozzles) depending on whether the base or cleaning tool is in contact with the surface, ensuring efficient fluid distribution tailored to the current operational configuration while maintaining comprehensive cleaning coverage.
3Productivity
If the extraction cleaner uses fixed suction and fluid dispensing paths, then the system is easy to control, but the cleaning effectiveness varies with orientation
Solution Approach 1:
The patent implements a self-service control mechanism where the extraction cleaner automatically detects its own maneuvering position and switches between different suction and fluid dispensing configurations without requiring manual intervention. Sensors detect whether the base or cleaning tool is in contact with the surface, and the control system automatically activates the appropriate suction inlet and fluid dispensing nozzles, maintaining ease of operation while optimizing cleaning effectiveness for different orientations.
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 configuration enables efficient cleaning by ensuring optimal fluid application and debris recovery regardless of the cleaner's orientation, enhancing cleaning effectiveness and versatility.
Implementation Method 1
a suction motor configured for establishing suction to urge the recovered fluid into the recovery tank
Data Source
AI summary
An extraction cleaner may include a base, an upright body pivotally coupled to the base, a supply tank for supplying cleaning fluid to the base or a cleaning tool coupled to a hose, a recovery tank removably coupled to the upright body for recovering the cleaning fluid and/or debris through at least one inlet at the base and at least one inlet at the cleaning tool. A suction changeover valve may include a valve drive arrangement coupled between the base and the upright body to automatically provide suction at the cleaning tool when the upright body is in an upright position relative to the base, and suction at the base with the upright body is in a reclined position relative to the base. A diverter valve may be provided in the base and may be coupled to a diverter valve switch, such as a diverter valve switch in contact with the surface to be cleaned, for automatically directing suction to a nozzle when the base is moved in a rearward direction and to a suction inlet in an agitator chamber when the base is moved in a forward direction.