Drain Manifold Air-Gap Layout for Clinical Backflow Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Clinical facilities face plumbing challenges such as contamination, backflow, and clogging in drain connections due to the presence of water discharge devices like autoclaves and sterilizers, which can lead to gas migration and blockages in drainage systems.
Innovation Solution
A manifold plumbing fitting is positioned between the sink drain and the trap, featuring a body with an inlet for air and an outlet for water, an annular tapered surface to direct liquid waste, and multiple drain fitting openings that allow for connection of various water discharge devices, reducing the risk of backflow and clogging through rotational fluid movement and angularly spaced configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple water discharge devices are connected to a single drain line, then the drainage system can handle waste from multiple sources, but the risk of contamination, backflow, and clogging increases
Solution Approach 1:
The drain line is segmented into multiple independent connection points through the manifold fitting with multiple ports. Each water discharge device connects to a separate port, creating independent flow paths that prevent cross-contamination and backflow between devices while maintaining the ability to handle waste from multiple sources
Solution Approach 2:
The manifold plumbing fitting serves as an intermediary device between multiple water discharge devices and the main drain line. It mediates the waste flow from multiple sources, directing each stream separately through its own trap connection, thereby preventing direct contamination and backflow while enabling multi-device connectivity
2Device complexity
If a single trap is used for multiple drain connections, then the plumbing system is simpler, but blockages and clogging become more likely
Solution Approach 1:
The single trap is segmented into multiple independent trap connections through the manifold fitting. Each drain line connection has its own trap interface, allowing waste from different devices to be trapped separately. This prevents blockages in one line from affecting other lines while maintaining relatively simple plumbing architecture
Solution Approach 2:
The manifold fitting introduces a spatial dimension to the plumbing system by arranging multiple drain connections in different directions and planes. This three-dimensional arrangement allows waste streams to flow separately through different spatial paths to the trap, reducing the likelihood of cross-contamination and blockages while keeping the overall system compact
3Productivity
If drain connections are made directly to the trap, then the drainage path is short and efficient, but contamination and gas migration into the water discharge devices occur
Solution Approach 1:
The manifold plumbing fitting acts as an intermediary barrier between the trap and water discharge devices. It allows efficient drainage by providing direct trap connections for each device while simultaneously preventing contamination and gas migration by isolating each device's drain line within the fitting's sealed structure
Solution Approach 2:
The manifold fitting implements preliminary anti-action by preventing contamination and gas migration before they can affect the water discharge devices. The fitting's design includes sealed connections and air gaps that proactively block harmful factors from traveling up the drain lines, while still maintaining efficient drainage paths to the trap
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 manifold plumbing fitting effectively directs waste water from multiple sources to the trap, minimizing the risk of contamination and blockages, while the air gap feature prevents backflow and ensures safe drainage, enhancing the reliability of water management systems in clinical facilities.
Implementation Method 1
The interior area further includes a lower axial end that is bounded within the body by an annular tapered wall surface. The annularly tapered wall surface is configured such that in the operative position of the manifold plumbing fitting, the annularly tapered wall surface is vertically lower with closer proximity to the body outlet.
Implementation Method 2
The body inlet is positioned above a water level in the trap such that an air gap exists between the water level and the drain fitting openings when the trap is filled with water to the operating water level.
Data Source
AI summary
A water drain management apparatus used in clinical facility (43) or other facility includes a manifold plumbing fitting (32, 272, 384). The fitting includes a plurality of drain outlet connections for water discharge devices (40, 42, 222, 226, 230, 234). Such water discharge devices may include devices such as autoclaves, sterilizers, cleaners, washers, filters, humidifiers, condensing devices and other devices used in the facility. A plurality of drain fitting openings in the body of the fitting are connectable to respective water discharge devices, and openings that are not utilized are closable with plugs. Some manifold fittings (272, 344, 384, 482) include an air gap opening (288, 360, 392, 530). These configurations provide an air gap that prevents contamination due to back flow of water within the fitting reaching water discharge devices or the body inlet of the manifold fitting.