Robot Cleaner Dust Collector With Backflow Control
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Solution Overview
Problem
Robot cleaners face challenges in achieving effective cleaning performance due to the limitations of low-capacity fan motors, which restrict suction force and ability to collect bulky or varied dust shapes, while increasing suction force compromises dust collection efficiency.
Innovation Solution
A robot cleaner design featuring a dust collector with multiple collecting regions, a rotating brush, and a blower that separates dust collection based on weight, using a backflow preventing member and guide portion to enhance suction efficiency and prevent dust discharge, allowing for improved dust collection and sweeping performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a large-capacity fan motor is used to increase suction force, then cleaning performance is improved, but the device size and height increase, preventing cleaning under furniture
Solution Approach 1:
The dust collector is divided into multiple collecting regions (first collecting region for heavy dust, second collecting region for light dust) with different communication paths to the blower. This segmentation allows optimized airflow paths for different dust types, improving overall dust collection efficiency without requiring a larger blower motor.
2Force
If the sectional area of the suction hole is reduced to strengthen suction force, then suction performance is improved, but the ability to collect bulky or various shapes of dust deteriorates
Solution Approach 1:
The dust collector is divided into multiple collecting regions (first collecting region for heavy dust, second collecting region for light dust) with different communication paths to the blower. This segmentation allows optimized airflow paths for different dust types, improving overall dust collection efficiency without requiring a larger blower motor.
Solution Approach 2:
Different collecting regions are provided with different communication characteristics to the blower - the first collecting region communicates through a first communication path while the second collecting region communicates through a second communication path. This local differentiation allows each region to be optimized for its specific dust type, maintaining adaptability while improving suction efficiency.
3Adaptability or versatility
If the sectional area of the suction hole is increased to improve dust collection by sweeping operation, then dust collection ability is improved, but suction force generated by the fan motor deteriorates
Solution Approach 1:
The dust collector is divided into multiple collecting regions (first collecting region for heavy dust, second collecting region for light dust) with different communication paths to the blower. This segmentation allows optimized airflow paths for different dust types, improving overall dust collection efficiency without requiring a larger blower motor.
Solution Approach 2:
Different collecting regions are provided with different communication characteristics to the blower - the first collecting region communicates through a first communication path while the second collecting region communicates through a second communication path. This local differentiation allows each region to be optimized for its specific dust type, maintaining adaptability while improving suction efficiency.
4Volume of moving object
If a low-capacity fan motor is used to maintain small device size, then device compactness is maintained, but the ability to suction heavy dust deteriorates
Solution Approach 1:
The dust collector is divided into multiple collecting regions (first collecting region for heavy dust, second collecting region for light dust) with different communication paths to the blower. This segmentation allows optimized airflow paths for different dust types, improving overall dust collection efficiency without requiring a larger blower motor.
Solution Approach 2:
The patent changes the airflow path parameters by providing different communication paths (first communication path and second communication path) with different characteristics to the blower. This allows the same blower motor to operate efficiently for different dust types, effectively increasing dust suction ability without increasing device size.
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 design achieves a 95% cleaning efficiency, significantly higher than conventional robot cleaners, by effectively collecting heavy dust with the rotating brush and light dust with the blower's suction force, while preventing backflow and enhancing sweeping efficiency.
Implementation Method 1
a blower to generate a suction force to be applied into the dust collector
Implementation Method 2
a rotating brush provided at a side of the suction hole, and the robot cleaner may be configured to sweep up and collect the dust into the dust collector by a drive force of the rotating brush
Data Source
AI summary
A robot cleaner including a suction hole to suction dust, a blower to generate a suction force to suction the dust, a dust collector to receive the dust suctioned by said suction force through the suction hole, and a rotating brush to sweep up and collect the dust into the dust collector through the suction hole by a drive force of the rotating brush. The dust collector includes a backflow preventing member movable between an open position and a closed position. The backflow preventing member is pivotably rotatable in an air suction direction by the suction force of the blower to the open position and is adapted to return to the closed position to prevent the dust in the dust collector from being discharged through the suction hole upon stoppage of the blower.