Flexible Hose Wall Structure With Smooth Surfaces for Low Flow Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible hoses with corrugated inner and outer walls face issues such as increased flow resistance, whistling, dirt accumulation, and sticking due to internal and external grooves, which affect their performance in vacuum cleaning and drainage systems.
Innovation Solution
A flexible hose with a corrugated wall featuring barriers formed by complementary first and second closing legs of adjacent profile parts that overlap longitudinally, creating a smooth inner and outer surface to reduce flow resistance and prevent dirt accumulation, while maintaining flexibility and reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the hose has a corrugated inner wall with internal grooves, then flexibility is improved, but flow resistance increases and dust accumulates
Solution Approach 1:
The hose wall is segmented into corrugated sections (for flexibility) and smooth sections (for flow). The corrugated wall provides flexibility while the smooth inner surface sections reduce flow resistance and prevent dust accumulation by eliminating internal grooves in the flow path.
Solution Approach 2:
Different parts of the hose wall have different surface qualities. The inner surface has smooth sections where dust flow occurs to minimize resistance, while other parts can maintain corrugated structure for flexibility. This local differentiation resolves the contradiction between flexibility and flow efficiency.
2Adaptability or versatility
If the hose has a corrugated inner wall with internal grooves, then flexibility is improved, but whistling occurs
Solution Approach 1:
The hose wall is segmented into corrugated sections (for flexibility) and smooth sections (for flow). The corrugated wall provides flexibility while the smooth inner surface sections reduce flow resistance and prevent dust accumulation by eliminating internal grooves in the flow path.
Solution Approach 2:
Different parts of the hose wall have different surface qualities. The inner surface has smooth sections where dust flow occurs to minimize resistance, while other parts can maintain corrugated structure for flexibility. This local differentiation resolves the contradiction between flexibility and flow efficiency.
3Adaptability or versatility
If the hose has a corrugated outer surface, then flexibility is improved, but dirt accumulation occurs
Solution Approach 1:
The hose wall is segmented into corrugated sections (for flexibility) and smooth sections (for flow). The corrugated wall provides flexibility while the smooth inner surface sections reduce flow resistance and prevent dust accumulation by eliminating internal grooves in the flow path.
Solution Approach 2:
Different parts of the hose wall have different surface qualities. The inner surface has smooth sections where dust flow occurs to minimize resistance, while other parts can maintain corrugated structure for flexibility. This local differentiation resolves the contradiction between flexibility and flow efficiency.
Data Source
AI summary
Flexible hose a corrugated wall of which an outer surface comprises a multitude of consecutive protrusions (1) and grooves (2) and of which an inner surface comprises a multitude of internal protrusions (4) and grooves (3), a multitude of barriers for closing off each of the multitude of internal and/or external grooves (2), each of the multitude of barriers comprising a first closing leg (10, 12) of a first profile part and a second closing leg (11, 13) of a second profile part, the second closing leg being directed to the first closing leg, the first and second closing legs having a complementary shape provided to form a substantially smooth inner and/or outer surface.