Battery-Powered Vacuum Cleaner Filter Cleaning for Cordless Operation
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Solution Overview
Problem
Existing vacuum cleaners lack an efficient and autonomous method for filter cleaning, especially in areas without mains voltage, leading to reduced suction performance and increased user effort.
Innovation Solution
A battery-powered vacuum cleaner with a control device that manages filter cleaning via an external air valve and electric motor, allowing for manual or automatic trigger, independent of mains supply, with energy optimization and sensor-controlled operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If filter cleaning is performed manually or requires mains power, then user effort increases and operational flexibility decreases, but autonomous operation and ease of use are improved
Solution Approach 1:
The vacuum cleaner performs filter cleaning autonomously without user intervention. The control device automatically triggers the external air valve device to open and close, enabling the filter to clean itself through pressure differential changes, eliminating manual cleaning requirements
Solution Approach 2:
The external air valve device operates periodically, opening and closing at predetermined time intervals to create pressure differentials that facilitate filter cleaning. This periodic operation allows the filter to be cleaned at regular intervals without continuous user input
2Adaptability or versatility
If vacuum cleaner operates without mains power, then adaptability to different locations improves, but energy supply reliability may worsen
Solution Approach 1:
The battery device is pre-charged before operation, storing sufficient energy to power both vacuuming and filter cleaning functions. This preliminary energy preparation enables the vacuum cleaner to operate autonomously in locations without mains power supply
Solution Approach 2:
The system changes its energy supply parameter from mains voltage to battery voltage, allowing operation in different environmental conditions. The control device manages battery power consumption to maintain adequate energy levels for both suction and filter cleaning operations
3Productivity
If filter cleaning is performed frequently, then suction performance is maintained, but energy consumption increases
Solution Approach 1:
The control device monitors vacuum cleaner operation parameters and automatically determines when filter cleaning is needed based on actual performance degradation. This feedback mechanism ensures filter cleaning occurs only when necessary to maintain suction performance, avoiding unnecessary energy consumption
Solution Approach 2:
The external air valve device opens for limited predetermined time intervals rather than continuously, providing just enough cleaning action to maintain filter performance. This partial action approach balances cleaning effectiveness with energy conservation
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
Enables optimized suction performance and reduced user effort through autonomous filter cleaning, extended battery operation, and efficient energy use, ensuring effective cleaning even in areas without mains power.
Implementation Method 1
a battery device (63) is provided for supplying energy to the external air valve device (33), and in particular to the suction unit (26)
Implementation Method 2
the external air valve device (33) can be brought from a closed valve position into an open valve position and back again from the open valve position into a closed valve position for cleaning the filter device (21)
Implementation Method 3
the filter device being subjected to negative pressure by the suction unit (26)
Implementation Method 4
a suction unit (26), in particular with an electric motor device (25) with at least one electric motor (27)
Data Source
AI summary
The invention relates to a vacuum cleaner comprising a suction inlet (16), a dirt collecting container (12), a filtering device (21), a suction line (24), and a suction unit (26). The dirt collecting container (12) is fluidically connected to the suction unit (26) via the filtering device (21) and via the vacuum line (24), and the suction unit applies a vacuum to the filtering device. The vacuum cleaner also comprises an external air valve device (33). The filtering device (21) can be supplied with external air on the clean side via the external air valve device (33), and the external air valve device can be brought from a closed valve position into an open valve position in order to clean the filtering device and back from the open valve position into a closed valve position. The invention is characterized by a battery device (63) for supplying power to the external air valve device (33).