Suction Siphon Helical Flow Channel Laminar Design
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Solution Overview
Problem
Existing suction siphons for flush-mounted drain installations, such as those used in toilet urinals, require high volumes of flushing water due to turbulent flow conditions, which hinder compactness and cost-effectiveness.
Innovation Solution
A suction siphon design featuring a helical flow channel with a winding section acting as an odor trap, where the distance from the inside to the outside of the flow channel is significantly greater than the distance between the outside and inside, promoting laminar flow and reducing water requirements, combined with angled and flattened sections to enhance compactness and flow stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the winding section has a small radius (winding point inside the flow channel), then the suction siphon is more compact, but the flow becomes highly turbulent requiring more flushing water
Solution Approach 1:
The patent changes the geometric parameter of the winding section by positioning the winding point outside the flow channel at a specific distance, transforming the flow characteristics from turbulent to laminar and reducing flushing water requirements from over 1.5 liters to under 0.8 liters
2Quantity of substance
If the winding point is positioned far outside the flow channel, then laminar flow is achieved and flushing water is reduced, but the suction siphon becomes too large for flush-mounted installations
Solution Approach 1:
The patent optimizes the distance parameter between the winding point and flow channel to achieve laminar flow while maintaining compact dimensions suitable for flush-mounted installations
Solution Approach 2:
The patent positions the winding point in a specific spatial location outside the flow channel, using three-dimensional positioning to achieve both compactness and laminar flow conditions
3Volume of moving object
If a helical winding with small radius is used, then the suction siphon is compact, but turbulent flow increases flushing water consumption
Solution Approach 1:
The patent changes the geometric parameters of the helical winding by positioning the winding point outside the flow channel, transforming the flow regime from turbulent to laminar while maintaining compact dimensions
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 achieves a flushing water volume of less than 0.8 liters, specifically around 0.5 liters, while maintaining an adequate suction effect, and allows for a compact, cost-effective, and efficient drainage system suitable for flush-mounted installations.
Implementation Method 1
a significantly more laminar flow is achieved through a generous dimensioning of the radius of the winding section
Implementation Method 2
suction siphon for a flush-mounted drain installation
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The siphon (1) has a flow channel (4) arranged in a housing (5) and provided with a flow channel inlet and a flow channel outlet that are connected with inlet and outlet connections (2, 3), respectively. The flow channel is wound around the inlet connection, and a winding section of the flow channel serves as an odor trap. The winding section runs around a winding point, and comprises a flow channel outer side and a flow channel inner side. Distance of the flow channel inner side to the winding point amounts to 25 percentage of distance between the flow channel outer and inner sides.