Flush Toilet Recess Rear Bottom Surface Flow Redirection
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Solution Overview
Problem
Flush toilets experience stagnation in the drainage conduit due to uneven velocity distribution, leading to the accumulation of small and floating waste, as the major stream from the rim spout port flows swiftly into the introduction conduit portion, causing flush water in the rear region to have high velocity while the front region has low velocity, resulting in incomplete discharge of waste.
Innovation Solution
The flush toilet design includes a bowl portion with a recess having a bottom below the pooled water level, where the flush water forms a major stream that collides with a rear bottom surface, guiding it to the front region of the drainage conduit, ensuring uniform velocity distribution and smooth flow, thereby effectively discharging small and floating waste without stagnation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the major stream from the rim spout port flows swiftly into the introduction conduit portion, then the rear region of the drainage conduit has high velocity, but the front region has low velocity causing stagnation
Solution Approach 1:
The recess acts as an intermediary structure between the bowl and drainage conduit. It receives the high-velocity major stream, allows it to collide with the rear bottom surface, and redirects it toward the front region, thereby mediating the velocity distribution and preventing stagnation in the front region while maintaining effective flow throughout the drainage conduit.
Solution Approach 2:
The recess introduces local structural variation in the drainage conduit, creating different flow conditions in different regions. The rear bottom surface of the recess provides a localized collision point that redirects flow, while the overall recess structure modifies the velocity distribution pattern to achieve uniform flow throughout the conduit.
2Reliability
If small pieces of waste and floating pieces of waste are kept staying in pooled water, then they are not discharged, but improving swirling strength only swirls them together without moving them into drainage conduit
Solution Approach 1:
The recess serves as an intermediary zone where the high-velocity major stream collides with the rear bottom surface and redirects toward the front region. This intermediary action creates a pushing effect that propels waste particles, including small and floating pieces, from the pooled water into the drainage conduit, overcoming the limitation of mere swirling.
Solution Approach 2:
The invention utilizes hydraulic action through the major stream and its collision with the rear bottom surface of the recess. This hydraulic mechanism generates sufficient force to move waste particles, including small and floating pieces, from the pooled water into the drainage conduit, achieving effective waste discharge through water flow dynamics.
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 design ensures a uniform flow velocity distribution in the drainage conduit, preventing stagnation and effectively discharging small and floating waste by guiding the major stream to the front region, ensuring complete waste removal.
Implementation Method 1
a major stream which is directed to flow from the front end of the bowl portion toward the inlet of the drainage conduit, and the rear bottom surface of the bottom of the recess is configured to allow a part of the major stream to collide therewith
Implementation Method 2
allow a part of the major stream to collide therewith, and then guide the collided major stream to a front region inside the drainage conduit
Implementation Method 3
the rear bottom surface of the bottom of the recess is configured to allow a part of the major stream to collide therewith, and then guide the collided major stream to a front region inside the drainage conduit
Data Source
AI summary
A flush toilet which including a bowl portion having a waste-receiving surface, a rim and a recess; a water spouting portion for spouting the flush water forwardly; and a drainage conduit. The recess of the bowl portion has a bottom below a pooled water level, and a wall surface connecting between the bottom and a lower edge of the waste-receiving surface, wherein the bottom of the recess has a front bottom surface and a rear bottom surface. The bowl portion is configured to allow flush water to form a major stream which is directed to flow from an front end of the bowl portion toward the inlet of the drainage conduit, and the rear bottom surface of the bottom is configured to allow a part of the major stream to collide therewith, and then guide the collided major stream to a front region inside the drainage conduit.