Floor types identifying device, dust suction device having the same, and vacuum cleaner having the same
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Solution Overview
Problem
Conventional vacuum cleaners with electrically-driven roller brushes struggle to navigate between hard surfaces and carpeted floors due to jamming issues, as they lack effective floor type identification and power adjustment mechanisms, leading to increased manufacturing costs and inefficiencies.
Innovation Solution
A floor types identifying device integrated with a vacuum cleaner, featuring a current sensing unit and processing module that detects variations in driving current to differentiate between hard, short-pile, and long-pile carpeted surfaces, allowing for real-time adjustment of suction and roller brush power, thereby preventing jamming and enhancing operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a height adjusting unit and floor detection sensor are integrated in the suction head, then floor type identification capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the floor detection function from the suction head and relocates it to the extension connection unit. This separation allows the suction head to remain simple while the extension connection unit provides intelligent detection and control functions, reducing overall manufacturing cost.
Solution Approach 2:
The extension connection unit is designed to perform multiple functions: it serves as both a mechanical connector and a floor detection device with integrated sensors and control circuitry. This multi-functionality eliminates the need for separate floor detection components in the suction head.
2Productivity
If suction power is adjusted according to floor type detection, then cleaning effectiveness on carpeted surfaces is improved, but control processor lacks reference signal for roller brush motor adjustment
Solution Approach 1:
The patent implements a feedback control system where the floor detection sensor provides real-time information about floor type to the control processor. The processor then adjusts both suction power and roller brush motor power based on this feedback, ensuring optimal performance for each floor type.
Solution Approach 2:
The control processor is pre-programmed with reference signals and control algorithms for different floor types. When the floor detection sensor identifies a specific floor type, the processor immediately retrieves and applies the appropriate pre-prepared control parameters for both suction motor and roller brush motor.
3Power
If roller brush driving motor operates at high power, then dust suction capability on hard floors is improved, but roller brush becomes jammed on carpeted surfaces
Solution Approach 1:
The patent makes the roller brush motor power dynamic rather than fixed. The control processor continuously monitors floor type through the detection sensor and dynamically adjusts motor power accordingly: high power on hard floors for effective dust pickup, low power on carpeted surfaces to prevent jamming.
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
The solution enables seamless navigation across various floor types by adjusting suction and roller brush power, reducing jamming incidents and maintaining a simple, cost-effective structure, thus improving the vacuum cleaner's performance and usability.
Implementation Method 1
a current sensing unit coupled to the roller brush driving motor and a processing and controlling module. When the suction head is moved, a driving current for controlling an operation of the roller brush driving motor is detected by the current sensing unit
Data Source
AI summary
A floor types identifying device for use in a vacuum cleaner is disclosed, and comprises a current sensing unit coupled and a processing and controlling module. When a suction head is moved, a driving current of a roller brush driving motor is detected by the current sensing unit, such that the processing and controlling module judges that the suction head is moved on a specific floor that has a hard surface, a short-pile-carpeted surface or a long-pile-carpeted surface according to a variation of the driving current. Therefore, for a vacuum cleaner that is integrated with the floor types identifying device of the present invention, both suction power of the vacuum cleaner and driving power of the roller driving motor can be properly adjusted in response to the floor's surficial material type.