Sheet Metal Pipe Bend with Form-Fitting Air-Guiding Element Recesses
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Solution Overview
Problem
The production of metal pipe bends with air-guiding elements is complex and costly due to the need for precise pre-positioning and welding of air-guiding lamellas, and existing designs using combustible plastics are not suitable for fire protection requirements.
Innovation Solution
A metal pipe bend design featuring arcuate depressions on the inner sides of sheet metal ducts, allowing for form-fitting insertion and pre-positioning of air guiding elements, which can be glued or welded, utilizing standard sheet metal ducts and enabling the use of thin sheet metal for cost reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal pipe bends with air-guiding elements are produced using traditional welding methods, then reliable fixation is achieved, but the manufacturing process becomes complex and costly due to precise pre-positioning requirements
Solution Approach 1:
The patent applies preliminary action by creating arcuate depressions in the pipe bend before inserting the air-guiding elements. These depressions are formed in advance to receive the elements, eliminating the need for complex pre-positioning and welding operations. The elements are simply inserted into the pre-formed recesses, significantly simplifying the manufacturing process while maintaining reliable fixation.
2Ease of manufacture
If plastic materials are used for pipe bends, then low material and manufacturing costs are achieved, but fire protection requirements are not met due to combustibility
Solution Approach 1:
The patent applies parameter changes by transitioning from plastic to metal materials, fundamentally changing the material composition parameter. This substitution eliminates combustibility while maintaining the ability to form arcuate depressions through metal forming processes. The metal pipe bends with integrated depressions provide both fire resistance and cost-effectiveness.
3Manufacturing precision
If air-guiding lamellas are welded in pipe bends, then secure fixation is achieved, but precise pre-positioning and holding during welding becomes very complex
Solution Approach 1:
The patent eliminates positioning complexity by pre-forming arcuate depressions that automatically receive and position the air-guiding elements. The elements are inserted into these pre-created recesses where they self-align and secure without requiring complex pre-positioning fixtures or welding operations. The depression geometry ensures precise positioning through form-fit engagement.
4Adaptability or versatility
If two-shell design is used for metal pipe bends, then air-guiding elements can be integrated, but manufacturing becomes very complex and expensive
Solution Approach 1:
The patent merges the pipe bend structure with the air-guiding elements by forming arcuate depressions directly in the pipe bend walls. This integration eliminates the need for separate two-shell construction while maintaining the functionality of housing air-guiding elements. The single-piece design with integrated recesses simplifies manufacturing and reduces assembly complexity.
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 design simplifies the manufacturing process, reduces costs, and provides a fire-resistant solution by allowing precise alignment and secure fixation of air guiding elements within metal ducts, enhancing stability and reducing material thickness.
Implementation Method 1
sheet metal duct (3), which has an arcuate depression (5) on the inner sides (7) of opposite wall sections (4), into which the air guiding element (2) protrudes with form-fitting projections (6)
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to a pipe bend (1) for fluid channels, wherein the pipe bend (1) has an air-guiding element (2) in the interior thereof, characterized in that the pipe bend (1) has a sheet-metal channel (3) which, on inner sides (7) of oppositely situated wall sections (4), has in each case one arcuate depression (5) into which the air-guiding element (2) projects by way of positive-locking projections (6) formed at opposite outer sides (10).