Screen cover for attaching to open end of conduits
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Solution Overview
Problem
Water heaters face operational hindrances due to external objects entering through open ends of conduits, which can clog and disrupt air and gas flow, and existing protective caps require separate designs for different conduit configurations, increasing manufacturing and service costs.
Innovation Solution
A screen cover with coaxially aligned first and second diametric portions, a mesh, and a shoulder portion, made of PVC, that fits various conduit diameters and configurations, allowing air and gas flow while preventing external objects from entering, using an interference fit and detachable design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate protective caps are designed for each conduit configuration (straight pipe end, 45 degrees elbow end, 90 degrees elbow end), then the protective function is optimized for each specific configuration, but the manufacturing cost and service complexity increase significantly
Solution Approach 1:
The screen cover is designed with a universal adaptation mechanism that allows a single cap design to fit multiple conduit configurations (straight pipe ends, 45-degree elbows, 90-degree elbows). The cap incorporates adjustable positioning features and flexible sealing mechanisms that can accommodate different conduit angles and orientations, eliminating the need for separate protective caps for each configuration while maintaining effective protection against external objects
Solution Approach 2:
The screen cover is divided into modular components including a main body, adjustable positioning elements, and detachable sealing parts. This segmentation allows the same basic design to be adapted to different conduit configurations by repositioning or replacing specific modules rather than designing entirely separate caps for each application
2Ease of manufacture
If a single screen cover design is used for all conduit configurations, then manufacturing cost is reduced, but the fit and sealing effectiveness may be compromised for specific configurations
Solution Approach 1:
The screen cover incorporates dynamic adjustment mechanisms that allow it to adapt its shape and positioning to match different conduit configurations. The cap includes flexible sealing elements and adjustable mounting features that can be positioned to ensure proper fit and sealing effectiveness whether installed on a straight pipe end, 45-degree elbow, or 90-degree elbow, maintaining reliability across all applications
3Reliability
If protective caps are installed at open ends of conduits, then external objects are prevented from entering water heaters, but the flow of air and gases through the conduit may be restricted
Solution Approach 1:
The screen cover incorporates mesh screens and porous filtering materials that allow air and gases to pass through while blocking external objects. The filtering material is designed with appropriate pore sizes and permeability characteristics to maintain adequate airflow and gas flow rates while effectively preventing birds, animals, insects, and debris from entering the water heater through the conduit open ends
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 screen cover effectively prevents external objects from entering water heaters while maintaining airflow, reducing manufacturing costs by accommodating different conduit configurations with a single design.
Implementation Method 1
The first outer surface of the first diametric portion or the second outer surface of the second diametric portion is configured to engage with the open end of the conduit using an interference fit
Data Source
AI summary
A screen cover for attaching to an open end of a conduit of a water heater is provided. The screen cover includes a first diametric portion having a first diameter and a second diametric portion having a second diameter. The first diameter is greater than the second diameter. The first and second diametric portions are coaxially aligned and configured to allow flow of air or gas therethrough. The screen cover includes a shoulder portion defined between the first diametric portion and the second diametric portion. The screen cover further includes a mesh disposed at a first opening of the first diametric portion. The mesh prevents entry of external objects into the water heater through the open end of the conduit.