Robot Swimming Pool Cleaner Capable of Adjusting Water Flow Jetting Direction and Control Method thereof
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Solution Overview
Problem
Existing robot swimming pool cleaners are unable to effectively clean the water line on the pool wall and often experience instability and loss of grip due to insufficient downward pressure, leading to poor movement control and the need for manual assistance.
Innovation Solution
A robot swimming pool cleaner with a vector nozzle that adjusts water flow direction, generating a counter-acting force to improve grip and stability, allowing for attachment to the pool wall and precise movement along the water line, using a control mechanism to adjust the nozzle's rotation angle and coordinate with the driving wheel for enhanced cleaning capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing robot swimming pool cleaners only rely on driving wheels to travel and turn, then the device complexity is low, but the robot cannot attach to the swimming pool wall and move laterally along the water line
Solution Approach 1:
The water flow jetting system serves multiple functions: it provides downward pressure for stable movement on the pool bottom, generates counter-acting force for attachment to the pool wall, and enables lateral movement along the water line through directional adjustment. This multi-functional design allows the robot to clean both the pool bottom and water line without requiring separate specialized mechanisms for each function.
Solution Approach 2:
The vector nozzle is designed to be rotatable, allowing dynamic adjustment of the water flow jetting direction. The rotation power mechanism enables the nozzle to change its orientation, providing variable component forces in different directions (front, back, side, and downward). This dynamic adaptability allows the robot to switch between cleaning modes (bottom cleaning vs. water line cleaning) and adjust its movement characteristics as needed.
2Reliability
If the robot swimming pool cleaner relies only on driving wheels, then the device structure is simple, but it experiences insufficient downward pressure resulting in weak grip and unstable movement
Solution Approach 1:
The water flow jetting system generates a counter-acting force that provides downward pressure on the robot body. This counter-acting force compensates for the insufficient downward pressure that would otherwise result from the robot's weight alone, ensuring strong grip between the driving wheels and the pool bottom. The bending portion of the vector nozzle is specifically designed to direct water flow in a way that maximizes this downward component force.
Solution Approach 2:
The patent utilizes hydraulic principles by employing water flow as the working medium to generate force. The drainage power mechanism pumps water through the vector nozzle, creating a high-velocity jet that produces reaction force (counter-acting force) on the robot body. This hydraulic approach provides reliable downward pressure and movement stability without adding complex mechanical suspension or anchoring systems.
3Ease of operation
If the water flow jetting direction is fixed, then the device structure is simple, but the robot cannot adjust its operating posture and trajectory
Solution Approach 1:
The vector nozzle is designed to be rotatable, allowing dynamic adjustment of the water flow jetting direction. The rotation power mechanism enables the nozzle to change its orientation, providing variable component forces in different directions (front, back, side, and downward). This dynamic adaptability allows the robot to switch between cleaning modes (bottom cleaning vs. water line cleaning) and adjust its movement characteristics as needed.
Solution Approach 2:
The control mechanism receives feedback about the robot's position and orientation (through sensors detecting water surface position and calculating cleaning range) and adjusts the vector nozzle rotation angle accordingly. This closed-loop control enables precise trajectory control and posture adjustment, allowing the robot to follow the water line accurately and maintain optimal operating position.
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 provides stable and accurate movement on the pool bottom and attachment to the pool wall, enabling effective cleaning of both the bottom and the water line, with improved steering and trajectory control, reducing the need for manual labor.
Implementation Method 1
A top part of the vector nozzle is a bending portion, so that a counter-acting force of the water flow jetted has a component force towards the bottom part of the housing
Implementation Method 2
a drainage power mechanism is arranged inside the housing to drive a water flow to be sucked in by the water inlet and jetted out by a drainage port of the vector nozzle
Data Source
AI summary
A robot swimming pool cleaner includes a housing. The housing is provided with a water inlet and a vector nozzle, a drainage power mechanism is arranged inside the housing, a top part of the vector nozzle is a bending portion, a bottom part of the vector nozzle is a vertical portion, and the vertical portion is in transmission connection with a rotation power mechanism; the control mechanism is in electric signal connection with the rotation power mechanism, and by controlling the rotation angle of the vector nozzle, the operating posture and trajectory of the robot swimming pool cleaner may be adjusted by cooperating with a driving wheel. The swimming pool bottom and the swimming pool wall may be effectively cleaned.