Multistage Flush Water Tank with Adjustable Cylindrical Valve
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Solution Overview
Problem
Conventional flush water tank apparatuses for toilets are limited to only two stages of flush water volume, failing to meet the demand for water conservation and often result in poor flushing due to insufficient water volume, especially when trying to reduce water usage further, leading to unstable float valve motion and inadequate flush water supply.
Innovation Solution
A flush water tank apparatus with a cylindrical body and adjustable switching valves that allow for multiple stages of flush water volume, including large, medium, and small flushes, using a first and second switching valve to adjust the opening surface area of the cylindrical body's opening portion, ensuring a strong current force and efficient water conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the opening on the cylindrical body is fully opened or fully closed to achieve large or small flush, then the flush water volume can be adjusted between two stages, but the demand for water conservation with even smaller volume (eco-small flush) cannot be met
Solution Approach 1:
The invention divides the single opening on the cylindrical body into multiple openings (first opening and second opening) with different sizes. By selectively opening or closing each opening, the system achieves multiple flush stages (large flush, small flush, and eco-small flush) with different water volumes, thereby segmenting the flow control capability to meet diverse water conservation requirements.
Solution Approach 2:
The invention introduces a switching valve mechanism that can dynamically adjust which openings are open or closed based on the desired flush type. This dynamic control allows the system to transition between different flush stages (large, small, eco-small) by changing the opening configuration, providing adaptability to various water usage scenarios.
2Quantity of substance
If the flush water volume is reduced to conserve water, then water conservation is improved, but the current force of flush water becomes weak leading to poor toilet flushes
Solution Approach 1:
The invention creates different local flow conditions by providing multiple openings of different sizes on the cylindrical body. The first opening provides a larger flow path for large flushes with strong current force, while the second opening provides a smaller flow path for eco-small flushes. This local differentiation allows the system to maintain appropriate current force for each flush type while achieving water conservation when needed.
3Adaptability or versatility
If multiple water passage holes are formed in the side surface of the cylindrical body to regulate flush water volume, then the volume can be adjusted, but the structure becomes more complex
Solution Approach 1:
Instead of creating multiple separate water passage holes in the cylindrical body, the invention segments the flow control function by providing a first opening and a second opening on the cylindrical body, each controlled by independent switching valves. This segmentation approach achieves multi-stage volume regulation while keeping each individual opening simple and manageable.
4Productivity
If the water level in the tank is below the opening in the cylindrical body, then water can be supplied to the toilet, but the current force of flush water is weak resulting in poor flushing
Solution Approach 1:
The invention ensures that the water level in the tank is maintained above the highest opening (first opening) by providing an overflow pipe that discharges water at a level above the first opening. This preliminary action of maintaining adequate water level ensures that when flushing occurs, the flush water has sufficient head pressure and current force to achieve effective toilet flushing, regardless of which opening is used.
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 apparatus achieves multistage flush water volumes, providing a strong current force from start to end of flush, effectively addressing water conservation needs and preventing flushing defects by maintaining stable valve operation and desired water volumes.
Implementation Method 1
a float valve configured to close the discharge port when a water level drops to a predetermined position
Implementation Method 2
a switching valve configured to adjust an opening surface area of the cylindrical body so that a volume of flush water supplied from the reservoir tank to the toilet can be obtained in multiple stages
Data Source
AI summary
A flush water tank apparatus for storing flush water for flushing a flush toilet is disclosed. The flush water tank apparatus includes: a reservoir tank for storing flush water, the reservoir tank having a discharge port formed on the bottom surface thereof; a valve body for opening and closing a discharge port to supply flush water to a flush toilet; and a side surface extending in the upward direction from the bottom surface of the reservoir tank so as to surround the discharge port; and includes: a cylindrical body opens at the top and forms an opening portion on the side surface; and switching valves for opening and closing the opening portion on the cylindrical body to enable adjustment of the opening surface area of the opening portion of the cylindrical body so that the volume of flush water supplied from the reservoir tank discharge port to the flush toilet can be obtained in multiple stages, including at least the three stages of large, medium, and small.