Vent Attachment for Tankless Water Heater
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Solution Overview
Problem
Existing vent attachments for tankless water heaters have fixed dimensions, which can lead to installation challenges due to varying wall thicknesses and finishes, requiring cutting to length and increasing labor and risk of incorrect cuts, while also being associated with reliability issues and frequent breakdowns.
Innovation Solution
An adjustable vent attachment system comprising a first conduit with an adjustable air intake pathway and a second conduit with a projecting adjustable air intake pathway, both equipped with adjustment mechanisms such as threads or projections and grooves, allowing for telescopic or threaded adjustments to achieve a desired length, thereby accommodating different wall thicknesses and finishes without the need for cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed length vent terminations are used, then manufacturing and installation are simplified, but they cannot accommodate varying wall thicknesses and finishes, requiring cutting to length which increases labor and risk of incorrect installation
Solution Approach 1:
The vent termination system employs telescopic sections with threaded adjustment mechanisms that allow the length to be dynamically changed during installation. The first and second telescopic sections can be extended or retracted to accommodate varying wall thicknesses and exterior finish variations, eliminating the need for cutting while maintaining ease of installation through a standardized adjustable interface.
2Adaptability or versatility
If vent terminations of various fixed lengths are provided, then some adaptability is achieved, but installers still need to cut to length which adds labor and involves risk of wrong length
Solution Approach 1:
The vent termination is divided into multiple telescopic sections (first and second telescopic sections) that can be independently adjusted. Each section contains threaded adjustment mechanisms that allow for precise length control without cutting. The segmented design with standardized threading interfaces enables assembly and adjustment to be completed without additional cutting operations, reducing both labor and installation risk.
3Manufacturing precision
If cutting is required to achieve ideal fit, then precise length adjustment is possible, but extra labor is required and there is risk of cutting to wrong length
Solution Approach 1:
The cutting operation is replaced with a mechanical adjustment system consisting of telescopic sections with threaded interfaces. The threads provide precise, incremental length adjustment through rotation, eliminating the need for cutting tools and operators. This mechanical substitution maintains precise length control while significantly improving installation productivity by removing the cutting step entirely.
4Device complexity
If fixed dimension vent attachments are used, then device complexity is reduced, but they cause reliability issues and frequent breakdowns due to improper fit
Solution Approach 1:
The vent attachment system incorporates adjustable parameters through threaded mechanisms that allow the length and positioning of telescopic sections to be changed during installation. This parameter adjustment capability ensures proper fit across varying installation conditions, improving reliability by eliminating improper fit issues while maintaining relatively simple device construction through standardized threaded components.
Data Source
AI summary
A vent attachment for a tankless water heater is provided. The vent attachment includes a first conduit and a second conduit. The first conduit includes a first exhaust pathway and a first air intake pathway. The first air intake pathway includes an adjustable portion having a first adjustable length and a first adjustment mechanism. The second conduit includes a second exhaust pathway and a second air intake pathway. The second air intake pathway slidably engages with the first air intake pathway. The second air intake pathway includes a projecting portion having a second adjustable length equal to or greater than the first adjustable length and a second adjustment mechanism. The first adjustment mechanism and the second adjustment mechanism slidably couple the second conduit with the first conduit for a desired length of the vent attachment.