Water Stoppage Structure for Purifier Filter Core
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Solution Overview
Problem
Current water purifiers lack a water stoppage function, leading to inconvenience when replacing the filter core, as water tends to spill out during the process.
Innovation Solution
A water stoppage structure for water purifier filter cores, incorporating a filter core main body, seat body, first and second check valves, and switch valves, which allow water to pass through during operation but close when the filter core is detached, preventing spillage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If water purifier lacks water stoppage function, then device complexity is reduced, but water spills out during filter core replacement causing inconvenience
Solution Approach 1:
The check valve is pre-installed in the water passage to automatically close before the user detaches the filter core. This preliminary positioning of the valve ensures water stops flowing before the filter core is removed, preventing spillage without requiring user intervention to activate the stoppage function.
Solution Approach 2:
The water stoppage system operates autonomously through the check valve mechanism that automatically detects and responds to changes in water pressure when the filter core is detached. The system self-regulates water flow without requiring external control signals or complex electronic components, achieving intelligent water stoppage with minimal device complexity.
2Reliability
If check valve and switch valves are added to prevent water spillage, then safety and convenience are improved, but device complexity increases
Solution Approach 1:
The valve system is segmented into distinct functional components: a check valve for automatic water stoppage and switch valves for controlled water release. Each component performs a specific function independently, allowing the system to achieve reliable water stoppage while maintaining manageable complexity through functional decomposition.
Solution Approach 2:
The switch valve acts as an intermediary between the check valve and the external environment. It controls when water is released after stoppage, providing a regulated interface that manages the transition from stopped to flowing state. This intermediary component ensures reliable operation while simplifying the overall control mechanism.
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
Ensures safety and convenience by preventing water spillage during filter core replacement, maintaining operational integrity and user safety.
Implementation Method 1
The first check valve is disposed at the water import port, and on a water channel leading to the filter core main body, for allowing water to pass only through the filter core main body
Implementation Method 2
The first tight seal ring is disposed between an outer perimeter of the connection sleeve and the cavity at the head portion of the filter core main body, to separate connection and communication inside and outside the filter core main body
Implementation Method 3
two open-and-close switches, disposed respectively on the first water passage switch valve and the second water passage switch valve, such that when the filter core main body and the seat body are attached to each other, water is allowed to pass through, and when the filter core main body and the seat body are detached from each other, water is closed and is not allowed to pass through
Data Source
AI summary
A water stoppage structure utilized in a water purifier filter core, comprising a filter core main body, provided with a water input port, a first water output port, and a second water output port; a filter core, disposed in the filter core main body; a seat body, disposed at one end of the filter core main body, matching and working in cooperation with the water input port, the first water output port, and the second water output port of the filter core main body; a first check valve, disposed at the water import port, and on a water channel leading to the filter core main body, for allowing water to pass only through the filter core main body; a first water passage switch valve, disposed on the second water output port; and a second water passage switch valve, disposed on the first water output port.


