Pressure-Assisted Flush Tank Buoy Baffle Air Control
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Solution Overview
Problem
Existing pressure-assisted toilet flush systems face issues with excessive air replenishment, leading to synchronization problems between water and air during drainage, resulting in bubbles, noise, and a compromised flushing effect.
Innovation Solution
A pressure-assisted flush water tank design that includes a fluid container with a Venturi nozzle, a baffle, and a buoy to control air intake during water replenishment, preventing excessive air pressure and ensuring synchronized water and air levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If air replenishment is increased to maintain pressure balance during drainage, then pressure energy is improved, but excessive air pressure causes bubbles and noise during drainage
Solution Approach 1:
The air inlet is pre-configured with a buoy and baffle mechanism that automatically activates when water level rises during replenishment. The buoy rises with the water level and triggers the baffle to close the air inlet before excessive air pressure can build up, preventing bubbles and noise during subsequent drainage operations.
Solution Approach 2:
The system employs a feedback mechanism where the buoy responds to water level changes and automatically controls the air inlet closure. When water reaches a certain level during replenishment, the buoy rises and triggers the baffle to close the air inlet, creating a self-regulating system that maintains optimal pressure without excessive air accumulation.
2Productivity
If air and water are replenished simultaneously to restore pressure balance, then replenishment efficiency is improved, but synchronization between water and air levels deteriorates
Solution Approach 1:
The air inlet is designed to close automatically before the water replenishment is complete. The buoy rises with the water level and triggers the baffle to seal the air inlet in advance, ensuring that air replenishment stops before water reaches the air-water interface, thereby maintaining proper synchronization and preventing air trapping.
Solution Approach 2:
The buoy acts as an intermediary element between the water replenishment process and the air inlet control. It translates water level changes into mechanical action that closes the air inlet, mediating the interaction between water and air replenishment to maintain proper synchronization without requiring complex control systems.
3Stress or pressure
If the air inlet remains open during water replenishment to allow air accumulation, then pressure energy is improved, but excessive air intake causes out-of-sync water and air levels
Solution Approach 1:
The system is designed to close the air inlet in advance before excessive air accumulation occurs. The buoy rises with water level during replenishment and triggers the baffle to seal the air inlet when water approaches the air-water interface, preventing over-intake of air while maintaining sufficient pressure energy.
Solution Approach 2:
The buoy provides real-time feedback on water level position, automatically triggering the air inlet closure when the appropriate level is reached. This feedback mechanism ensures that air pressure is maintained at optimal levels without excessive air accumulation that would disrupt water-air level synchronization.
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 reduces drainage noise and improves the flushing effect by controlling air intake, ensuring better synchronization of water and air levels, and enhancing user experience.
Implementation Method 1
The buoy rises under internal pressure of the fluid container until the air inlet is closed
Implementation Method 2
A Venturi nozzle is disposed at a junction of the water channel and the fluid inlet
Implementation Method 3
The baffle is axially fitted on an outer side of the air inlet for sealing the air inlet in a movable manner
Data Source
AI summary
A pressure-assisted flush water tank includes a fluid container, a Venturi nozzle, a baffle and a buoy. The fluid container has an accommodating chamber, a water channel and an air channel. The accommodating chamber has a fluid inlet. The water channel and the air channel are in communication with the fluid inlet. The Venturi nozzle is disposed at a junction of the water channel and the fluid inlet. The baffle is configured to seal the air inlet in a movable manner. The buoy is disposed on an inner side of the air inlet. The top end of the buoy leans against the baffle. The buoy rises under internal pressure of the fluid container until the air inlet is closed. Before the buoy closes the air inlet, the protruding post abuts against and lifts up the baffle to open the air inlet.