Flush Toilet Backflow Check Structure for Water Splash Reduction
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Solution Overview
Problem
Existing flush toilets suffer from water splash due to backflow check structures where water adheres to the lower end surface of the water receiving wall and splashes when the pressure is lower than a predetermined value.
Innovation Solution
A flush toilet design with a backflow check structure featuring a water adhesion reducing portion on the water receiving wall, which includes a protruding portion to prevent water adhesion and splash by channeling water away from the lower end surface, combined with splash reducing portions to intercept and direct water flow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a backflow check structure with a water receiving wall is provided, then backflow prevention function is improved, but water adhesion to the lower end surface occurs causing splash
Solution Approach 1:
The invention introduces a protruding portion that extends in the water flow direction from the lower end surface of the water receiving wall. This dimensional extension creates a new spatial zone that intercepts water before it can adhere to the lower end surface, effectively redirecting water flow in three-dimensional space and preventing the harmful adhesion and splash effect.
Solution Approach 2:
The protruding portion acts as an intermediary element between the water flow and the lower end surface of the water receiving wall. It intercepts and redirects water flow, serving as a mediator that prevents direct contact between water and the lower end surface, thereby eliminating the adhesion and splash problem while maintaining backflow prevention functionality.
2Use of energy by moving object
If water flows out through the water outlet port at low pressure, then energy consumption is reduced, but water collides with adhered water causing splash
Solution Approach 1:
The protruding portion performs a preliminary action by intercepting water flow before it reaches the lower end surface of the water receiving wall. This preliminary interception occurs regardless of water pressure, preventing the formation of adhered water that would later cause splash when low-pressure water flows out. The structure proactively eliminates the condition for splash before it can occur.
Solution Approach 2:
The protruding portion applies preliminary anti-action by creating a physical barrier that prevents water from adhering to the lower end surface in the first place. This preliminary prevention counteracts the potential harmful effect of splash before it can manifest, allowing low-pressure water flow without causing splash problems.
3Reliability
If the water inlet port is positioned on the trajectory of water from the outlet port, then backflow check function is improved, but water adhesion to the lower end surface increases
Solution Approach 1:
The invention segments the water receiving wall by introducing a protruding portion that divides the water flow path. This segmentation creates separate zones: one where water flows toward the water inlet port for backflow prevention, and another where the protruding portion intercepts excess water to prevent adhesion. The segmentation allows both functions to coexist without interference.
Solution Approach 2:
The protruding portion extends in the water flow direction, adding a dimensional element that redirects water away from the lower end surface. This dimensional change creates a new flow path that reduces water adhesion while preserving the backflow check function achieved by positioning the water inlet port on the trajectory.
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
Reduces the occurrence of water splash by minimizing adhesion to the water receiving wall, ensuring controlled water flow and preventing splash towards the outside of the water receiver.
Implementation Method 1
a water adhesion reducing portion (9) in a part of the water receiving wall (5) located below the water inlet port (410). The water adhesion reducing portion (9) reduces the chances of water adhering to a lower end surface (520) of the water receiving wall (5)
Data Source
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AI summary
The problem to be overcome by the present disclosure is to propose a flush toilet designed to reduce the splash of water in a backflow check structure. A flush toilet includes: a bowl; a water discharge port to discharge water into the bowl; a water supply path (3) to supply the water from a water supply source to the water discharge port; and a backflow check structure (4) to check a backflow of the water running through the water supply path (3). The backflow check structure (4) has: a water inlet port (410) communicating with the water discharge port; a water receiving wall (5), through which the water inlet port (410) is provided in a part thereof; and a water outlet port (400) spaced from the water inlet port (410) and the water receiving wall (5) and configured to channel the water supplied from the water supply source toward the water inlet port (410). The water receiving wall (5) is provided, in a part thereof below the water inlet port (410), with a water adhesion reducing portion (9) to reduce the chances of the water adhering to a lower end surface (520) of the water receiving wall (5).