Self-moving cleaning robot, cleaning system, control method, and cleaning method
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Solution Overview
Problem
Existing self-moving floor cleaning robots have a low water stain recovery rate, leading to residual water stains on the floor, which attract dust and reduce cleaning efficiency, and can cause slips due to poor sealing and inconvenient roller disassembly.
Innovation Solution
A self-moving cleaning robot with a water tank assembly that includes a clean water tank, sewage tank, and a fan system with air ducts to separate sewage from airflow, along with a roller assembly that can detach from the squeegee to prevent water stains from remaining on the floor when encountering obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the robot uses a traditional water tank structure without separate air ducts, then the structure is simple, but the sewage cannot be effectively separated from airflow leading to low water stain recovery rate
Solution Approach 1:
The water tank is divided into a clean water storage chamber and a sewage storage chamber with separate air ducts. The air duct includes a first air duct connected to the clean water chamber and a second air duct connected to the sewage chamber, allowing independent airflow control and effective separation of clean water and sewage during cleaning operations.
Solution Approach 2:
A partition wall with a through-hole is introduced as an intermediary structure between the clean water chamber and sewage chamber. The fan chamber acts as a mediator that receives airflow from both chambers independently, enabling the separation of sewage-laden air from clean water vapor while maintaining pressure balance in the system.
2Ease of operation
If the roller is fixed to the squeegee, then the structure is stable, but the roller cannot be easily disassembled for cleaning or replacement
Solution Approach 1:
The roller assembly is designed as a detachable module that can be separated from the squeegee. The roller is mounted on a roller shaft that can be independently removed from the squeegee assembly, allowing easy access for cleaning the roller surface or replacing the entire roller without disassembling the squeegee mechanism.
3Productivity
If the robot continues cleaning with water stains on the floor, then cleaning operation continues, but dust is attracted to water stains causing secondary pollution
Solution Approach 1:
The harmful water stains are extracted and separated from the cleaning process by directing sewage-laden airflow through the second air duct to the sewage storage chamber. This prevents water stains from being deposited on the floor and eliminates the condition that would attract dust and cause secondary pollution.
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 effectively separates sewage from airflow, improving cleaning efficiency by preventing water stains and reducing dust attraction, while facilitating easy roller assembly and disassembly, thus enhancing the robot's cleaning performance and safety.
Implementation Method 1
during the operation of the self-moving robot, negative pressure is generated in the air duct, which can suck the sewage generated during the cleaning work from the air inlet into the tank body
Implementation Method 2
The first channel space of the tank body is relatively open, allowing sewage and airflow to be adequately separated in the first channel. The sewage remains in the inner cavity of the tank body, while the airflow uniformly flows towards the air outlet through the second channel inside the tank body
Data Source
AI summary
A self-moving cleaning robot comprises a body and a water tank. The water tank includes a tank body having an air duct and a fan accommodation cavity extending from the bottom of the tank body toward the top of the tank body. An opening end of the fan accommodation cavity faces downwards of the tank body. An air inlet is provided on a side wall of the tank body, and an air outlet is provided at the top of the fan accommodation cavity. The air duct is formed in an inner cavity of the tank body, comprising a second channel formed by side walls of the fan accommodation cavity and corresponding portions of side walls of the tank body, and a first channel located in the inner cavity of the tank body between the air inlet and the fan accommodation cavity.