Base plate for a vacuum cleaner suction head for the suction of fine dust and large debris
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Solution Overview
Problem
Existing suction heads for vacuum cleaners are inefficient in picking up large-size debris and fine dust on carpets and hard surfaces, with increased power consumption and reduced motor power posing challenges for maintaining performance levels.
Innovation Solution
A base plate for the suction head with inclined surfaces and velvet strips that ensures adhesion to the surface, directing large-size debris into the suction channel and preventing it from being pushed forward or downward, combined with optimized design features like sharp edges and rear wheels for improved scraping and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If motor power is increased to maintain suction performance, then suction efficiency is improved, but power consumption increases
Solution Approach 1:
The base plate is segmented into multiple functional zones: a front inclined surface for debris deflection, a rear inclined surface for additional deflection and adhesion, and a central flat surface for scraping. This segmentation allows each zone to perform a specific function that collectively enhances suction efficiency without requiring increased motor power.
Solution Approach 2:
Different surfaces of the base plate have different geometric properties tailored to specific functions: the front surface is inclined at a specific angle to deflect debris upward, the rear surface has a different inclination for adhesion and secondary deflection, and the central surface is flat for scraping. This local optimization of surface properties maximizes the effectiveness of the suction system at reduced power consumption.
2Productivity
If conventional base plate design is used, then manufacturing is simple, but suction efficiency for large debris and fine dust is insufficient
Solution Approach 1:
The base plate incorporates inclined surfaces that create curved airflow paths and debris trajectories. The front inclined surface deflects debris upward into the suction channel, while the rear inclined surface provides additional deflection and adhesion. These curved surfaces optimize the flow dynamics for capturing both large debris and fine dust without requiring complex additional components.
3Ease of operation
If suction head pushes forward on carpets, then movement is achieved, but large-size debris is pushed downward instead of being picked up
Solution Approach 1:
The front inclined surface is positioned to preemptively intercept and deflect large-size debris upward before the suction force can push it downward into the carpet. This preliminary anti-action counteracts the natural tendency of debris to be pushed downward during forward movement, ensuring that debris is directed into the suction channel rather than lost.
Data Source
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AI summary
A base plate for a vacuum cleaner suction head is described, said base plate comprising a lower face, an upper face and a base plate channel open towards the surface to be vacuumed. The channel extends across the whole width of the base plate. The base plate channel comprises a front edge and a rear edge. The lower face comprises: a first surface which extends along the whole front edge of the channel and a second surface which extends along the whole rear edge of the channel, the first and second surfaces lying in a same horizontal plane. The lower face also comprises a front inclined surface extending from said first surface towards the front side. According to the invention, the front inclined surface is inclined upwards so that the front side is raised with respect to the surface to be vacuumed.