Robot Pool Cleaner Filter Anti-Blocking via Reverse Flow
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Solution Overview
Problem
Existing robot swimming pool cleaners face inefficiencies due to filter screen blockages, requiring frequent manual cleaning, which is inconvenient and reduces cleaning efficiency.
Innovation Solution
The design incorporates a deposition chamber, garbage filtering and collecting mechanism, and one-way valves to create a reverse water flow for self-cleaning, flushing dirt to a deposition chamber and preventing filter screen blockages, ensuring prolonged high cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the robot swimming pool cleaner uses a filter screen to intercept dirt, then the cleaning efficiency is improved, but the filter screen easily blocks and requires frequent manual cleaning
Solution Approach 1:
The patent implements a self-cleaning mechanism where the water pump creates reverse water flow to automatically flush the filter screen. The deposition chamber collects dirt and the system periodically reverses pump rotation to clean the filter screen without human intervention, making the system serve itself.
Solution Approach 2:
The patent extracts the dirt accumulation problem from the main cleaning path by creating a separate deposition chamber. Dirt is diverted into this separate chamber through the second one-way valve, isolating it from the filter screen and preventing blockage in the main water flow path.
2Reliability
If the filter screen intercepts dirt in the housing, then water quality is improved, but suction is reduced due to blockage
Solution Approach 1:
The patent introduces a second filter screen in the deposition chamber as an intermediary structure. This second filter allows water to pass through while trapping larger dirt particles in the deposition chamber, maintaining water quality without blocking the main suction path.
Solution Approach 2:
The filtering function is segmented into two stages: the first filter screen in the main water path handles fine filtration, while the second filter screen in the deposition chamber handles coarse particle separation. This segmentation prevents the main filter from being overwhelmed by large debris.
3Duration of action of moving object
If the robot swimming pool cleaner operates continuously, then cleaning coverage is improved, but filter screen blockage occurs more frequently
Solution Approach 1:
The patent ensures continuous operation by implementing automatic periodic cleaning cycles. The water pump alternates between forward rotation (cleaning mode) and reverse rotation (self-cleaning mode), eliminating idle time and maintaining continuous useful action without manual intervention.
Solution Approach 2:
The system employs periodic reverse rotation of the water pump to create intermittent self-cleaning cycles. This periodic action flushes accumulated dirt from the filter screen at regular intervals, preventing progressive blockage and maintaining long-term continuous operation.
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 self-cleaning function maintains higher cleaning efficiency over time by automatically flushing and storing dirt, reducing manual intervention and extending the service life of the cleaner.
Implementation Method 1
the rotation direction of the water pump is controlled by the control mechanism, to form a water flow from the first opening to the second opening inside the housing, or form a water flow from the second opening to the third opening inside the housing
Implementation Method 2
the first opening is provided with a first one-way valve that may be opened towards an inner side of the housing, the third opening is provided with a second one-way valve that may be opened towards an outer side of the housing
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A robot swimming pool cleaner with a filter screen anti-blocking function, including a housing. The interior of the housing is provided with a filtering mechanism (3) and a deposition chamber (105), the housing is provided with a first opening (103) communicated with a water inlet chamber, a second opening (104) communicated with a water pump chamber, and a third opening (106) communicated with the deposition chamber, the third opening is provided with a garbage filtering and collecting mechanism (5), the first opening is provided with a first one-way valve and the third opening is provided with a second one-way valve. A water pump may form a reverse water flow, thereby flushing the filtering mechanism, dirt is flushed to the deposition chamber and the garbage filtering and collecting mechanism for temporary storage, avoiding blockage of the filtering mechanism.