Robot Cleaner Suction Layout for Higher Pressure and Lower Noise
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Solution Overview
Problem
Conventional robot cleaners have a degraded suction force due to size and battery performance limitations, leading to increased power consumption and noise when attempting to enhance suction power, and a complex internal structure from separate motors for side brushes and suction fans.
Innovation Solution
A robot cleaner design that minimizes suction channel resistance by positioning the dust box on the bottom surface, using a single motor for both the agitator and side brushes, and optimizing the suction fan's wing configuration to reduce flow resistance and noise, while maintaining stability with a battery placement that balances weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the motor capacity is increased to enhance suction force, then the suction force is improved, but the power consumption and noise increase
Solution Approach 1:
The patent changes the physical parameters of the suction channel (cross-sectional area, length, shape) to reduce flow resistance. By optimizing these geometric parameters, the system achieves improved suction force without increasing motor capacity, thereby avoiding increased power consumption and noise
2Force
If the motor capacity is increased to enhance suction force, then the suction force is improved, but the noise increases
Solution Approach 1:
The patent optimizes the geometric parameters of the suction channel including cross-sectional area, length, and shape to minimize flow resistance. This allows the existing motor to generate sufficient suction force without operating at high power levels, thereby reducing noise generation
3Adaptability or versatility
If separate motors are used for side brushes and suction fan, then the functionality is improved, but the device complexity increases
Solution Approach 1:
The patent combines the drive mechanisms by using a single motor to power both the side brushes and the suction fan through a shared transmission system. This merging of functions reduces the number of components and simplifies the overall device structure while maintaining all necessary functionalities
4Force
If the suction channel resistance is minimized by positioning the dust box on the bottom surface, then the suction force is improved, but the stability may be affected
Solution Approach 1:
The patent positions the battery at the rear of the device to serve as a counterweight that balances the weight of the dust box located at the front bottom surface. This counterbalancing arrangement maintains the center of gravity within an stable range, ensuring device stability while allowing the dust box to be positioned for optimal suction channel configuration
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
Increases suction pressure without increasing the motor capacity or battery size, reducing noise and power consumption, and simplifying the internal structure by using shared actuators for the agitator and side brushes.
Implementation Method 1
a suction fan configured to form a suction pressure on a suction channel defined by the suction port, the dust box and the filter unit
Data Source
AI summary
A robot cleaner comprises a main body having a suction port at a bottom surface thereof, a pair of wheel assemblies disposed at both sides of the main body, and configured to move the main body, a dust box mounted to contact the bottom surface of the main body, and configured to collect dust sucked through the suction port, a filter unit configured to filter air discharged from the dust box, a suction fan configured to form a suction pressure on a suction channel defined by the suction port, the dust box and the filter unit, and a battery disposed at a side of the dust box.