Spray module and robot for use therewith
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Solution Overview
Problem
Existing window cleaning robots face challenges such as tilting or falling off due to obstacles, inadequate traction, and insufficient cleaning force, especially when dealing with stubborn stains, leading to ineffective cleaning and safety risks.
Innovation Solution
A cleaning robot design featuring a suction disk with adjustable negative pressure distribution and an ultrasonic spray module that uses a piezoelectric vibration plate to effectively attach and clean surfaces, ensuring secure attachment and efficient cleaning by managing pressure and using a liquid spray for stubborn stains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a suction disk is used to attach the robot to the window surface, then the robot can maintain stable attachment, but the robot may tilt or lift off when encountering obstacles causing air leakage
Solution Approach 1:
The suction disk is divided into multiple independent suction cavities, each capable of maintaining vacuum independently. This segmentation prevents air leakage from affecting the entire attachment system when one area encounters an obstacle, maintaining both attachment stability and posture stability.
Solution Approach 2:
The robot employs dynamic pressure distribution across the suction disk, adjusting vacuum levels in different regions based on detected obstacle positions. This allows the robot to maintain stable attachment while compensating for posture changes caused by obstacles.
2Productivity
If high water pressure is used to clean windows thoroughly, then cleaning effectiveness improves, but safety risks increase due to potential equipment falling or personnel slipping
Solution Approach 1:
The spray system applies water in a controlled, partial manner rather than high-pressure excessive force. Multiple spray nozzles distribute water evenly across the window surface, achieving thorough cleaning through cumulative effect rather than concentrated high pressure, thus maintaining safety while improving cleaning effectiveness.
3Ease of operation
If a brush or cloth is used for window cleaning, then the device can clean mild dirt and dust, but it is unable to effectively remove stubborn stains or grime
Solution Approach 1:
The cleaning system merges multiple cleaning mechanisms: brushes for mild dirt, spray nozzles for liquid application, and suction for water removal. This combination allows the robot to handle both mild dirt and stubborn stains effectively, improving productivity while maintaining ease of operation through automated multi-mode cleaning.
4Ease of operation
If the robot uses a track belt or moving wheels for locomotion, then the robot can move on the window surface, but unsuitable force distribution causes loss of traction and mobility
Solution Approach 1:
The robot incorporates sensors that detect traction conditions and provide feedback to the control system. Based on this feedback, the robot dynamically adjusts the force distribution between the track belt and suction disk, and modifies motor power output, ensuring stable traction and reliable mobility under varying conditions.
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 maintains secure attachment to surfaces and effectively cleans windows by distributing pressure and using ultrasonic spray technology to remove tough stains, improving cleaning efficiency and safety.
Implementation Method 1
an air extraction module, disposed within the casing and in communication with the airtight space, configured to generate a negative pressure in the airtight space
Implementation Method 2
The water drawing unit includes an ultrasonic vibration element
Implementation Method 3
the vibration plate is made of a piezoelectric material
Data Source
AI summary
The present invention discloses a robot that moves on a surface. The robot includes a casing, a moving unit coupled to the casing, and a suction disk coupled to the casing. The casing, the suction disk and the surface are configured to form an airtight space. The robot further includes an air extraction module and a spray module. The air extraction module is disposed in the casing and is in communication with the airtight space, and the air extraction module is configured to generate a negative pressure in the airtight space. The spray module is coupled to the casing and configured to spray a liquid onto the surface.