Drain Siphon Inner Cover Bridge Sealing
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Solution Overview
Problem
The existing drain designs with siphon covers often experience air leakage issues due to poor sealing between the siphon cover and the raised bottom, leading to reduced water trap height and potential odor escape or overpressure in the sewer, necessitating a minimum water height to prevent water ejection.
Innovation Solution
An inner cover and bridge part are introduced, positioned between the siphon cover and the outflow opening, creating a separate space that prevents leakage along the tunnel or raised bottom, ensuring a consistent maximum water trap height by forming a connection to the lowest part of the collecting housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the siphon cover connects directly to the raised bottom, then the structure is simple, but air leakage occurs and the water trap height is reduced
Solution Approach 1:
The invention divides the sealing space into two separate zones: an upper sealing space between the siphon cover and upright wall, and a lower sealing space between the inner cover and upright wall. The bridge part connects these two zones while preventing air leakage paths. This segmentation isolates the sealing functions from each other, ensuring that leakage in one zone does not compromise the other, thereby achieving both structural simplicity and reliable sealing.
Solution Approach 2:
The bridge part acts as an intermediary element connecting the siphon cover and inner cover while maintaining separation between them. It provides structural support and defines the boundary between the upper and lower sealing spaces, preventing direct air leakage paths while allowing the sealing surfaces to remain simple and effective.
2Ease of manufacture
If the siphon cover connects directly to the raised bottom, then manufacturing is easier, but the water trap height is inconsistent and odors can escape
Solution Approach 1:
By segmenting the sealing system into upper and lower sealing spaces with separate sealing surfaces, the invention ensures that the water trap height is consistently maintained regardless of minor manufacturing variations. The bridge part provides a stable reference structure that maintains the correct spacing between the siphon cover and inner cover, preventing odor escape while keeping manufacturing processes simple.
3Reliability
If a minimum water height of 4cm is maintained to prevent overpressure, then water ejection is prevented, but the water trap height is reduced
Solution Approach 1:
The segmentation of the sealing space into upper and lower zones allows the water trap to maintain its full theoretical height while still providing sufficient water column for overpressure prevention. The bridge part ensures that the lower sealing space maintains the necessary water height for overpressure protection, while the upper sealing space preserves the maximum water trap height for effective odor prevention.
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
This configuration ensures a consistent maximum water trap height, preventing air leakage and odor escape, while allowing for easy cleaning and installation of both vertical and horizontal outlet pipes without affecting the overall drain depth.
Implementation Method 1
The siphon cover is arranged over the upright wall and together with the upright wall and the collecting housing provides for the siphon action
Data Source
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AI summary
The invention relates to a drain (1), comprising: - a collecting housing (2) with an inflow opening on the upper side, an outflow opening and a tunnel (22) extending to the outflow opening; - an upright wall (10) arranged around the outflow opening; - a siphon cover (13) arranged over the upright wall; and an inner cover (17) which is arranged in and at a distance from the siphon cover (13) and which connects to the outflow opening, and wherein a bridge part (16) hanging over the tunnel (22) is arranged between the inner cover (17) and the siphon cover (13).