Vacuum Cleaner Filter Bag and Fan Curve Matching for Low-Power Pickup
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Solution Overview
Problem
Existing vacuum cleaning systems with hoseless and tubeless designs face inefficiencies in energy consumption and dust removal performance, particularly on standard carpet types, due to suboptimal design and component interactions.
Innovation Solution
The method involves adapting the motor-fan curve, filter bag size, shape, and receptacle dimensions to optimize the vacuum cleaning system's efficiency, reducing electrical input power while maintaining high dust removal efficiency by optimizing the air flow curve and suction power, and incorporating nonwoven filter material with surface foldings to enhance filtration and airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vacuum cleaning system uses conventional design with standard motor-fan units and filter bags, then the structure is simple and easy to manufacture, but the energy consumption is high and dust removal efficiency is insufficient
Solution Approach 1:
The patent applies parameter changes by optimizing the motor-fan curve characteristics and filter bag dimensions (length, width, height) to achieve better performance. Specifically, the filter bag dimensions are optimized to be L/B/H = (100 to 150)/(30 to 50)/(80 to 120) mm, and the motor-fan unit is selected to generate a characteristic curve that maximizes efficiency at the operating point, thereby reducing electrical power consumption while improving dust removal efficiency
Solution Approach 2:
The patent employs dynamics by introducing a adjustable throttle valve in the air outlet line and a variable speed motor. The throttle valve allows dynamic adjustment of airflow resistance to optimize the operating point on the motor-fan curve, while the variable speed motor enables real-time adaptation of motor speed to match cleaning requirements, both contributing to energy efficiency improvements
2Loss of energy
If the vacuum cleaning system reduces electrical input power to save energy, then energy consumption decreases, but dust removal efficiency and suction power are compromised
Solution Approach 1:
The patent implements feedback control through a control unit that monitors the operating conditions and adjusts the throttle valve position and motor speed accordingly. The control unit receives information about the current airflow and power consumption, and dynamically adjusts the system parameters to maintain optimal efficiency, ensuring that dust removal performance is preserved while minimizing energy consumption
Solution Approach 2:
The patent achieves multi-functionality by integrating the throttle valve, variable speed motor, and control unit into a single optimized system that can adapt to different cleaning scenarios. The same motor-fan unit and filter bag configuration can handle various dust loads and airflow requirements by adjusting operational parameters, making the system universally effective across different operating conditions
3Productivity
If the filter bag uses nonwoven material with surface foldings to enhance filtration, then dust removal efficiency improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies curvature principles by incorporating surface foldings on the filter bag. The filter bag features radially extending folds that increase the effective filtration surface area without proportionally increasing the bag volume. This curved/folded structure improves dust capture efficiency while maintaining a compact form factor that is still manufacturable using standard forming processes
4Use of energy by moving object
If the motor-fan curve is optimized to reduce power consumption, then energy efficiency improves, but the suction power and airflow characteristics may be compromised
Solution Approach 1:
The patent resolves this contradiction through dynamic operation using a variable speed motor that can adjust its rotational speed to match the optimal operating point on the motor-fan curve. By dynamically adjusting the motor speed rather than operating at fixed high power, the system maintains sufficient suction power during actual cleaning operations while consuming less electrical power during lower-demand periods, achieving both energy efficiency and adequate suction performance
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 approach significantly reduces electrical input power by up to 63% while achieving 80% dust removal efficiency on standard carpets, with improved airflow and suction power, ensuring effective dust removal and extended service life.
Implementation Method 1
a motor-fan unit having a characteristic motor-fan curve
Implementation Method 2
the filter bag comprises filter material made of nonwoven material
Data Source
AI summary
The invention relates to a method for optimizing a vacuum cleaning system comprising a substantially hoseless and tubeless vacuum cleaning device and a filter bag, where the substantially hoseless and tubeless vacuum cleaning device comprises a motor-fan unit having a characteristic motor-fan curve, a filter bag receptacle, a connection port for the filter bag and a cleaning head, and where the filter bag comprises filter material made of nonwoven material, comprising the step of: adapting the characteristic motor-fan curve and the size, the shape and the material of the filter bag and the size and the shape of the filter bag receptacle and the inner diameter of the connection port for the filter bag and the cleaning head to each other such that the vacuum cleaning system achieves an efficiency of at least 30%, preferably of at least 34%, particularly preferably of at least 38% when vacuuming according to the Standard on a Standard carpet type Wilton with an empty filter bag, where vacuuming according to the Standard is performed according to Standard EN 60312 and the Standard carpet type Wilton is provided according to Standard EN 60312. The Invention furthermore relates to a vacuum cleaning system having a substantially hoseless and tubeless vacuum cleaning device and a filter bag which is developed and/or manufactured using this method.