Swimming Pool Robot Hydraulic Adhesion Control

Solution Overview

Problem

Existing swimming pool cleaning robots face challenges in efficiently climbing inclined walls and maintaining adhesion, often requiring additional ballast or floats, which complicates user operation and leads to inconsistent behavior, and there is a need to reduce energy consumption.

Innovation Solution

A swimming pool cleaning robot with a hydraulic circuit and adjustable pump power to generate and modify pressing force, using liquid inlets and outlets to enhance adhesion and climbing capabilities, along with an external power supply and control unit for user-adjustable pump power settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additional ballast or floats are added to correct the robot's climbing behavior, then the robot's adhesion to walls is improved, but the device complexity increases and user operation becomes more difficult

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by adjusting the pump power level to modify the pressing force generated by the water jet. Instead of adding physical components like ballast or floats, the system changes the operational parameter (pump power) to adapt the pressing force to different wall adhesion conditions, thereby resolving the contradiction between improving reliability and reducing device complexity

Inventive Principle:
Principle #35Parameter changes

2Reliability

If additional ballast or floats are added to correct the robot's climbing behavior, then the robot's adhesion to walls is improved, but ease of operation deteriorates

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent implements self-service by enabling the system to automatically adapt to different wall conditions through pump power adjustment. The robot autonomously modifies its pressing force based on detected adhesion conditions, eliminating the need for users to manually install or adjust ballast/floats, thus improving ease of operation while maintaining reliability

Inventive Principle:
Principle #25Self-service

3Reliability

If pump power is increased to enhance pressing force for wall climbing, then adhesion to wall is improved, but energy consumption increases

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the pump power adjustable and adaptable rather than fixed. The system dynamically adjusts the pump power level based on the detected adhesion conditions and wall material characteristics, optimizing the balance between achieving sufficient pressing force for reliable wall climbing and minimizing energy consumption by avoiding excessive power usage

Inventive Principle:
Principle #15Dynamics

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 robot effectively climbs and cleans pool walls with improved adhesion and reduced energy consumption, allowing for user-adjustable pump power settings to accommodate varying wall materials and conditions, enhancing operational efficiency and user convenience.

Implementation Method 1

at least one hydraulic circuit for circulating liquid between at least one liquid inlet and at least one liquid outlet

Methodology Applied
Scientific EffectHydraulic circuit:

Implementation Method 2

means for generating a pressing of the cleaning robot on said surface

Methodology Applied
Scientific EffectHydraulic pressure: Pressure Increase

Data Source

PatentEP3126595B1Swimming-pool cleaning robot with adjustable pumping power
Publication Date: 2019.07.03
  • EP3126595B1 patent drawingFigure 1~2
  • EP3126595B1 patent drawingFigure 3
  • EP3126595B1 patent drawingFigure 4

AI summary

The invention relates to a swimming-pool cleaning robot (10) comprising: a body (11), at least one hydraulic circuit for circulating liquid between at least one liquid intake (13) and at least one liquid outlet (14), means for driving and guiding said cleaning robot (10) over a surface, means for generating a force for urging the cleaning robot (10) against said surface, means for determining the grip of the cleaning robot (10) on the surface, and means for modifying the force urging the cleaning robot (10) against said surface in accordance with the grip determined.