Height-Variable Flush Water Tank Structure for Rim and Jet Flow
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Solution Overview
Problem
Existing flush water tank devices do not effectively utilize the volume and hydraulic head pressure of flush water for toilet flushing, leading to inefficiencies in water distribution and flushing effectiveness.
Innovation Solution
A flush water tank device with a first tank part and a second tank part having different cross-sectional areas at varying heights, allowing for optimized distribution of flush water through rim and jet spout ports, enhancing instantaneous flow rates and overall flushing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the water tank is simply partitioned into first and second water tanks, then the structure is simple, but the volume of each water tank and the hydraulic head pressure cannot be sufficiently utilized for toilet flushing
Solution Approach 1:
The patent applies local quality by configuring the first and second tank parts with different cross-sectional areas at different heights. Specifically, the first tank part has a larger cross-sectional area at lower heights while the second tank part has a larger cross-sectional area at higher heights. This localized differentiation optimizes the hydraulic head pressure distribution and water volume utilization for each discharge path, resolving the contradiction between simple structure and effective flushing.
Solution Approach 2:
The patent introduces a vertical dimension variation by making the cross-sectional areas of the tank parts change with height. Instead of uniform horizontal partitioning, the invention creates a three-dimensional volume distribution where the first tank part expands downward and the second tank part expands upward. This dimensional change allows both tanks to maintain simple partition walls while optimizing volume and pressure utilization through vertical stratification.
2Quantity of substance
If the cross-sectional area of the first tank part is always larger than the second tank part, then the first water tank has greater capacity, but the hydraulic head pressure of the second water tank cannot be sufficiently utilized
Solution Approach 1:
The patent resolves this contradiction by applying local quality through height-dependent cross-sectional area differentiation. The first tank part has larger cross-sectional area at lower heights to maximize water volume storage, while the second tank part has larger cross-sectional area at higher heights to maximize hydraulic head pressure. This localized optimization ensures both volume and pressure requirements are met simultaneously.
Solution Approach 2:
The patent introduces dynamic volume distribution by making the effective capacity of each tank part height-dependent. As water level changes during flushing operations, the varying cross-sectional areas create dynamic volume-pressure relationships. The first tank part provides volume-rich discharge at lower levels while the second tank part provides pressure-rich discharge at higher levels, optimizing performance throughout the flushing cycle.
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 configuration allows for the full utilization of the flush water tank's volume and hydraulic head pressure, resulting in increased instantaneous flow rates and enhanced flushing effectiveness.
Implementation Method 1
when the first discharge valve is opened, flush water is spouted by a hydraulic head pressure of flush water in the first water tank, and when the second discharge valve is opened, flush water is discharged by a hydraulic head pressure of flush water in the second water tank
Data Source
AI summary
The present invention provides a flush water tank device, including a flush water tank main body including a first tank part and a second tank part for storing flush water, a rim spouting switch mechanism that switches discharge and stop of flush water in the first tank part, and a jet spouting discharge valve that switches discharge and stop of flush water in the second tank part, the first tank part and the second tank part are configured to have different cross-sectional areas depending on a height, and a ratio of the cross-sectional area of the first tank part to that of the second tank part at a first height is different from a ratio of the cross-sectional area at a second height that is lower than the first height.