Siphon Jet Toilet Valve Sequencing to Reduce Pressure Loss
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Solution Overview
Problem
Conventional siphon jet flush toilets experience pressure loss due to air flowing out from the jet spout port between the discharge valve and the jet water conduit, leading to inefficient waste discharge and water conservation issues.
Innovation Solution
A siphon jet flush toilet design that includes a controller to sequentially spout flush water from rim and jet spout ports, with the jet spouting discharge valve positioned lower than the bowl's upper surface, and supplies flush water to the jet water conduit before opening the valve to reduce air presence, utilizing head pressure for efficient siphon action and water conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the tank is arranged with a low silhouette and jet spouting is guided by head pressure, then the device occupies less space and has simpler structure, but air flows out from the jet spout port causing pressure loss
Solution Approach 1:
The system performs preliminary action by supplying flush water to the jet water conduit before opening the discharge valve. This pre-filling of the conduit with water eliminates air pockets in advance, preventing pressure loss when the valve opens and flush water is supplied to the jet water conduit.
2Device complexity
If air exists between the discharge valve and jet water conduit, then the structure is simpler, but pressure loss occurs due to air outflow from the jet spout port
Solution Approach 1:
The control unit activates the water supply to the jet water conduit before opening the discharge valve, performing the action of removing air in advance. This preliminary water supply fills the conduit and eliminates air pockets, preventing subsequent pressure loss without requiring structural modifications to the conduit.
3Productivity
If sequential control is implemented for rim spouting and jet spouting, then flush efficiency is improved, but control complexity increases
Solution Approach 1:
The control unit implements periodic action by sequentially controlling the discharge valve and water supply in specific time intervals. First, the discharge valve is opened for rim spouting, then the water supply is activated for jet spouting. This time-based sequential control optimizes flush efficiency through periodic activation of different flushing mechanisms.
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 pressure loss by minimizing air flow during flush operations, ensuring reliable waste discharge and water conservation through optimized spouting sequences and valve operations.
Implementation Method 1
the jet water conduit guiding the flush water in the reservoir tank to the jet spout port due to head pressure of the flush water in the reservoir tank
Implementation Method 2
a discharge trap conduit connected to a bottom portion of the bowl, the discharge trap conduit including an ascending conduit that extends upward from the bottom portion of the bowl
Data Source
AI summary
A siphon jet flush toilet comprises: a bowl; a rim spout port suppling flush water to the bowl; a discharge trap conduit; a jet spout port spouting flush water toward an inlet of the discharge trap conduit; a reservoir tank including a jet spouting discharge valve and storing flush water; a jet water conduit configured to guide the flush water in the reservoir tank to the jet spout port; and a controller being configured to control a rim spouting in which the flush water is spouted from the rim spout port and a jet spouting in which the flush water is spouted from the jet spout port, wherein the jet spouting discharge valve includes a valve body, the valve body being arranged at a position that is lower than an upper surface of the bowl and higher than a seal water level, and before opening the jet spouting discharge valve, the flush water is supplied to the jet water conduit.