Siphonic Flushing Device Air Intake Volume Control
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Solution Overview
Problem
Existing dual-flush siphonic flushing devices lack versatility in adjusting flush volumes, making them inflexible to meet different market standards and often produce unwanted noise during large volume flushes.
Innovation Solution
A siphonic flushing device with an air intake system that controls air intake to terminate flushing at specific volumes, featuring adjustable air inlets and a venting device connected to the siphon tube, allowing for easy adjustment of flush volumes and reducing noise through smaller air bubbles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed flush volume system is used, then the device structure is simple, but the adaptability to different market standards is poor
Solution Approach 1:
The patent implements dynamic adjustability of the air inlet position along the siphon tube. The air inlet can be positioned at different locations (first air inlet higher, second air inlet lower) to change the flush volume, transforming a static structure into a dynamic one that adapts to different market requirements without complete redesign
Solution Approach 2:
The air inlet system is segmented into multiple discrete inlet positions (first air inlet and second air inlet) at different heights on the siphon tube. This segmentation allows selective activation of specific inlet positions to achieve different flush volumes, making the system adaptable to various market standards
2Quantity of substance
If air is introduced early during large volume flush, then the flush volume increases, but noise increases due to larger air bubbles
Solution Approach 1:
The system performs preliminary action by introducing air at a controlled stage during the flush sequence. The air inlet activates after water flow is already established, preparing the system for volume control while avoiding premature air introduction that would create noise
Solution Approach 2:
The patent applies local quality by introducing air at specific localized positions on the siphon tube (different heights for different inlets) rather than uniformly throughout. This localized air introduction at controlled positions allows volume adjustment while minimizing noise generation
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
Enables easy adjustment of flush volumes to accommodate various market standards and minimizes noise during large volume flushes by controlling air intake, ensuring efficient and quiet operation.
Implementation Method 1
Operating on the general principle of a siphon, such flushing device generally consists of a tubular bend being submerged into water enclosed within a water cistern
Implementation Method 2
Prior to flushing, i.e. in the phase of filling the cistern with water compressed air will be entrapped within the first bend, thus being arranged at the highest vertical position of the tube and preventing water from flowing through the bend
Implementation Method 3
Upon flushing the air is allowed to escape through a vent valve whereby the water inside the tube is allowed to flow over the bend and further into the WC bowl
Implementation Method 4
an air intake device having an air outlet connected to said tube at the bend and being configured to allow air to exit via said air outlet an enter said tube for the termination of an ongoing flush
Data Source
Figure 1
Figure 2a~2c
Figure 3a~3c
AI summary
A siphonic flushing device is provided, comprising a tube (110) extending from an open inlet end (112) to an open outlet end (114) via a bend (116), arranged above said inlet end (112) and said outlet end (114), as well as via a water trap (118) formed between said bend (116) and said outlet end (114), and wherein said outlet end (114) is arranged below said inlet end (112); and an air intake device (300) having an air outlet connected to said tube (110) for allowing air to enter said tube (110) for terminating an ongoing flush, wherein said air intake device (300) further comprises a first air inlet (304) arranged vertically below said air outlet, and a second air inlet (306) arranged vertically below said first air inlet (304), and wherein a first flush volume is provided if air is introduced through the first inlet (304), and a second flush volume is provided if air is introduced through the second inlet (306).