Vacuum Cleaner Valve Layout for Automatic Edge Suction
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Solution Overview
Problem
Upright vacuum cleaners are ineffective at cleaning the edges of surfaces due to reduced airflow velocity and occluded airflow, especially when cleaning along walls or on carpeted floors, where the main inlet cannot directly reach the edges.
Innovation Solution
A vacuum cleaner design with a main suction inlet and an additional edge cleaning inlet, along with a valve system on the handle that allows for selective airflow redirection between the main inlet, edge cleaning inlet, and an accessory hose, enabling focused suction at the edges without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the main suction inlet is used for cleaning, then large areas of the floor can be cleaned, but edge cleaning effectiveness is reduced
Solution Approach 1:
The suction inlet is divided into two separate inlets: a main suction inlet for cleaning large areas and an edge cleaning inlet specifically positioned at the lateral edge for effective edge cleaning. This segmentation allows each inlet to be optimized for its specific function, resolving the contradiction between covering large areas and maintaining edge cleaning effectiveness.
Solution Approach 2:
The edge cleaning inlet is specifically positioned at the lateral edge of the base with a configuration optimized for edge cleaning (including a lateral-facing opening and downward airflow direction). This local optimization ensures that the edge region receives specialized attention with appropriate airflow characteristics, maintaining reliability at the edge while the main inlet handles large area cleaning.
2Reliability
If airflow passages concentrate suction along edges, then edge cleaning performance is enhanced, but manual operation is required
Solution Approach 1:
The system includes a sensor that automatically detects when the vacuum cleaner is positioned near an edge and autonomously redirects airflow to the edge cleaning inlet. This self-service mechanism eliminates the need for manual operation while maintaining enhanced edge cleaning performance, as the system serves itself by automatically adapting to edge conditions.
Solution Approach 2:
A sensor provides feedback about the vacuum cleaner's position relative to edges, and this feedback is used by a controller to automatically adjust airflow distribution between the main and edge cleaning inlets. This feedback loop enables automatic edge detection and response, resolving the contradiction between enhanced performance and manual operation requirements.
3Ease of manufacture
If the distance between the lateral side of the base and the lateral edge of the main inlet is increased, then wheel placement is improved, but edge cleaning becomes more problematic
Solution Approach 1:
By separating the main suction inlet from the edge cleaning function through a dedicated edge cleaning inlet positioned at the lateral edge, the invention allows the main inlet to be positioned optimally for large area cleaning while the edge inlet handles edge cleaning. This segmentation enables wheel placement improvements without compromising edge cleaning effectiveness.
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
Provides efficient edge cleaning without requiring manual operation, maintaining strong suction at the edges and simplifying user control, while allowing for seamless transitions between main floor cleaning and accessory cleaning modes.
Implementation Method 1
a suction motor operatively associated with the handle or the base and configured to generate a suction airflow through the dirt separator
Data Source
AI summary
A vacuum cleaner having a based and a handle. The handle has first and second valves to selectively receive suction airflow from a main suction inlet, a first edge cleaning inlet, and an accessory hose. The first valve is operable to connect a dirt separator to either a main floor cleaning inlet or an auxiliary cleaning inlet. The second valve is operable to selectively connect the auxiliary cleaning inlet to the edge cleaning inlet. The accessory hose is mountable to an accessory hose mount on the handle. When mounted, the accessory hose contacts a second actuator for the second valve to hold the second valve in an edge cleaning position.