Vacuum cleaner
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Solution Overview
Problem
Vacuum cleaners with rechargeable batteries face challenges in optimizing cleaning time and suction force due to limited battery capacity, making it difficult for users to efficiently manage cleaning tasks based on the size of the cleaning area and dust amount.
Innovation Solution
A vacuum cleaner equipped with an electric blower, dust-collecting unit, and a controller that adjusts suction force based on the remaining battery level, reducing suction when low and increasing it when the battery is sufficiently charged, to optimize cleaning time and suction force automatically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the duty ratio is increased to enhance suction force, then the cleaning effectiveness is improved, but the cleaning available time is shortened
Solution Approach 1:
The patent applies dynamics by making the duty ratio adjustable and adaptive rather than fixed. The control unit dynamically changes the duty ratio based on detected dust and dirt amounts, allowing the system to optimize between suction force and cleaning available time in real-time according to actual cleaning conditions
Solution Approach 2:
The patent changes the parameter of duty ratio based on detected conditions. The control unit modifies the duty ratio parameter according to the dust and dirt amount detected by the sensor, thereby adjusting the motor's power output to match actual cleaning needs and extend cleaning available time while maintaining effectiveness
2Ease of operation
If manual operation is used to control duty ratio, then the user can adjust suction force, but the optimization of cleaning available time and suction force for each user cannot be achieved
Solution Approach 1:
The patent implements feedback by using a sensor to detect the dust and dirt amount during cleaning operations. The control unit receives this feedback information and automatically adjusts the duty ratio accordingly, eliminating the need for manual operation while achieving automatic optimization of cleaning parameters
Solution Approach 2:
The system performs self-service by automatically detecting cleaning conditions and adjusting its own operation parameters. The control unit autonomously modifies the duty ratio based on sensor data without requiring user intervention, enabling the vacuum cleaner to adapt to different cleaning scenarios automatically
Data Source
AI summary
In a vacuum cleaner electric blower is driven by power supplied by a secondary battery. A dust-collector is configured to catch and collect dust and dirt sucked by driving the electric blower. A detector is configured to detect a remaining amount of the secondary battery. A controller is configured to control suction force of the electric blower. In the case cleaning is finished when the remaining amount of the secondary battery detected by the detector is equal to or less than a predetermined value, the controller sets the parameter to reduce the suction force of the electric blower for the next cleaning. In the case cleaning is finished when the remaining amount of the secondary battery detected by the detector is not equal to or less than the predetermined value, the controller sets the parameter to increase the suction force of the electric blower for the next cleaning.