Vacuum Pump Protection Net Recessed Mesh Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing vacuum pump protection nets, designed with a stepwise shape to prevent contact with the rotor body, increase the size and suction resistance of the vacuum pump due to their thickness.
Innovation Solution
A vacuum pump protection net with a peripheral edge section and a mesh section, where the mesh section is integrally formed with the same material, having a thickness equal to or less than half that of the peripheral edge section, and featuring a recessed design to reduce suction resistance without increasing the pump's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protection net is designed with a stepwise shape to prevent contact with the rotor body, then contact prevention is achieved, but the thickness and size of the protection net increase
Solution Approach 1:
The invention transitions from a two-dimensional planar protection net to a three-dimensional structured design with protruding portions. These protrusions extend toward the rotor body in the axial direction, creating a dimensional change that provides contact prevention functionality while maintaining a thin overall profile. The protruding portions act as early warning elements that contact the rotor body before the main net surface, preventing full contact without requiring increased net thickness.
Solution Approach 2:
The protection net is segmented into multiple functional regions: a thin base mesh section for low resistance, and multiple protruding portions extending from the mesh section toward the rotor body. This segmentation allows different parts of the protection net to serve different functions - the mesh section provides filtration with minimal resistance, while the protruding portions provide contact prevention and structural support without significantly increasing overall thickness.
2Productivity
If the mesh section thickness is reduced to decrease suction resistance, then suction resistance decreases, but attachment strength may be compromised
Solution Approach 1:
The protection net employs local quality by creating regions of different thicknesses and densities. The mesh section maintains a thin profile with optimized hole distribution to minimize suction resistance, while the protruding portions provide localized structural reinforcement. The peripheral edge section has increased thickness for mounting strength, while the central mesh area remains thin for low resistance. This spatial variation in material distribution optimizes both suction performance and structural integrity.
Solution Approach 2:
The protection net uses a composite structure combining a thin mesh section with thicker protruding portions and a reinforced peripheral edge section. This composite design integrates materials of different thicknesses and mechanical properties within a single component, allowing the thin mesh area to provide low resistance while the thicker protrusions and edges provide necessary strength and attachment capability.
Data Source
AI summary
A vacuum pump protection net 50 is provided with a peripheral edge section 51 and a flat mesh section 52 which is formed on the inner side of the peripheral edge section 51 and has a plurality of through holes 55. The thickness of the mesh section 52 is equal to or less than half the thickness of the peripheral edge section 51. A first surface of the mesh section 52 is located on the same plane as a first surface of the peripheral edge section 52. A second surface of the mesh section 52 is recessed from a second surface of the peripheral edge section 51.