Inhaler Sieve Flat Portion Dimensional Stability
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Solution Overview
Problem
Existing inhaler designs face challenges in maintaining precise dimensional tolerances for the sieve part, which is crucial for the mobility and accuracy of the substance supply container, due to manufacturing difficulties with dome-shaped convexities.
Innovation Solution
The sieve part features a protruding area with a flat portion that projects at a right angle from the retaining edge, enhancing dimensional stability, and is constructed from a wire mesh material with specific dimensions and material composition, such as stainless steel alloyed with chromium and nickel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a dome-shaped convexity is provided as the protruding area in the sieve part, then the receiving chamber can be delimited, but it is very difficult to achieve the required dimensional tolerances from a manufacturing point of view
Solution Approach 1:
The patent replaces the dome-shaped convexity (curved surface) with a flat portion (planar surface) in the protruding area of the sieve part. This geometric simplification from curved to flat surface directly addresses the manufacturing difficulty while maintaining the functional requirement of delimiting the receiving chamber and ensuring accurate dimensional tolerances.
2Stability of the object's composition
If the sieve part is made with very accurate dimensions to ensure mobility of the substance supply container, then the dimensional stability is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent simplifies the sieve part design by replacing the complex dome-shaped convexity with a flat portion, reducing geometric complexity while maintaining dimensional stability. This allows the sieve part to achieve accurate dimensions without requiring complex manufacturing processes or design features.
Data Source
AI summary
An inhaler (1) includes a sieve part (9) for administrating powdered substances such as medical substances. The inhaler (1) includes a suction air channel (6) leading to a mouthpiece (4), a substance supply container (8) that is moveable inside a receiving chamber (7) and the sieve part (9) disposed in the suction air channel (6) between the receiving chamber (7) and the mouthpiece (4). The sieve part includes a retaining edge (10), a sieve area contained in a cross sectional area within the retaining edge (10), and a protruding area (12) that protrudes to one side and has a flat portion (13).