Floor care appliance
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Solution Overview
Problem
Existing floor care appliances, such as brush vacuum cleaners, face challenges in accommodating large filter elements due to space constraints, which impairs suction performance when trying to clean under furniture.
Innovation Solution
Incorporating a third air guiding channel as an exhaust air channel that directs suction fan exhaust air to a filter housing with a filter, allowing the discharge opening to be shifted and enabling a larger filter element without increasing the overall height of the brush set.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large filter element is accommodated in the brush set, then filtration performance is improved, but the overall height of the brush set increases, impairing suction work under furniture
Solution Approach 1:
The air guiding channels are divided into multiple separate channels (first channel for dirty air, second channel for filtered air, third channel for exhaust air) within the pivotable connecting element. This segmentation allows each channel to be optimized independently and accommodated in a compact, distributed arrangement rather than requiring a single large volume, thus maintaining filtration performance without increasing overall height
Solution Approach 2:
The multiple air guiding channels are nested within the pivotable connecting element structure, with channels arranged concentrically or adjacently within the same component volume. The exhaust air channel is positioned to surround or adjoin the filtered air return channel, allowing efficient use of internal space without external dimensional increases
2Volume of stationary object
If the discharge opening with filter is shifted into the attachable filter housing, then a larger filter element can be accommodated without increasing brush set height, but the device complexity increases
Solution Approach 1:
The pivotable connecting element serves multiple functions simultaneously: it connects the brush set to the filter housing, guides dirty air to the filter, returns filtered air to the brush set, and exhausts fan air to the filter housing. By consolidating these multiple air guiding functions into a single multi-functional component, the design avoids the complexity of separate components for each function while accommodating a larger filter element
3Volume of moving object
If multiple air guiding channels are integrated in the pivotable connecting element, then space is optimized, but manufacturing complexity increases
Solution Approach 1:
The pivotable connecting element is designed with different local characteristics for different regions: the first air guiding channel has specific cross-sectional dimensions, the second channel is arranged adjacently or concentrically with different dimensions, and the third exhaust air channel surrounds or adjoins the other channels. This local differentiation allows each channel to be optimized for its specific function while being manufactured as an integrated component, balancing space optimization with manufacturing feasibility
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 arrangement allows for easy installation of a larger filter element, maintaining suction performance and accessibility, while keeping the appliance compact.
Implementation Method 1
the air guiding channels of the pivotable connecting element are guided for supplying the dirt-laden air from the brush set to the filter housing and returning the filtered air via a parallel air guiding channel to the brush set
Implementation Method 2
supply to a discharge region in the filter housing with an air outlet and an interposed filter
Data Source
AI summary
A brush vacuum cleaner having a brush set for receiving a driven brush roller, wherein at least one electric motor for a suction fan and for the drive of the brush roller is disposed in the brush set and wherein at least three air guiding channels are formed in a pivotable connecting element between the brush set and a filter housing. A supply of the dirt-laden suction air from the brush set to the filter housing takes place through the first air guiding channel, the filtered air is returned to the brush set through the second air guiding channel and through the third air guiding channel exhaust gas of the suction fan is returned to the filter housing to an air outlet.