Valve Clack Air Slots and Buffer Sealing for Pump Noise Reduction
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Solution Overview
Problem
Conventional air pumps produce loud noise due to airflow noise and suffer from poor gas tightness due to deformation of one-way air outlet valves, which is exacerbated by uneven welding and elastic fatigue.
Innovation Solution
The air pump incorporates a valve clack with air slots on the mounting column to disperse airflow, reducing noise, and a spacer with a rubber sealing to prevent blade deformation, ensuring gas tightness by using a buffer structure and a more controlled compression quantity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mounting column top surface is a plane structure, then the airflow flowing area is large and flowing speed is fast, but this results in loud airflow noise
Solution Approach 1:
The mounting column top surface is segmented into multiple air slots instead of a single plane structure. This divides the airflow path into multiple smaller channels, reducing the flowing speed in each slot while maintaining total airflow discharge capacity, thereby reducing airflow noise
2Strength
If the spacer is sealingly connected with the upper cover in a supersonic wave manner, then the connection is strong, but the compression quantity of each edge of the spacer becomes inconsistent causing the air outtake one-way valve to tilt and deform
Solution Approach 1:
The patent introduces a buffer structure at the connection between spacer and upper cover that provides localized compliance. This buffer structure allows differential compression at different edges of the spacer, accommodating manufacturing tolerances and preventing uneven compression that would cause valve tilting, while still maintaining strong sealing connection
3Device complexity
If the one-way air outlet valve is a plane structure, then the structure is simple, but elastic fatigue occurs after multiple movements causing tilting and deformation
Solution Approach 1:
The patent changes the plane structure of the one-way air outlet valve to a curved/spherical dome structure. This curved structure has better elastic recovery characteristics and distributes stress more evenly during operation, preventing elastic fatigue, tilting and deformation even after multiple movements, thereby maintaining gas tightness
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
The solution effectively reduces airflow noise and improves gas tightness by dispersing airflow through air slots and preventing blade deformation, resulting in a quieter and more efficient air pump operation.
Implementation Method 1
a plurality of air slots for dispersing an airflow at least in a top surface of the mounting column
Implementation Method 2
each blade having a radial inner end connected to the mounting column and elastically swingable with respect to the mounting column
Implementation Method 3
each blade 1′ swings upwards under a pressure of airflow
Data Source
AI summary
A valve clack is provided. The valve clack includes: a mounting column (11) having a plurality of air slots (111) for dispersing an airflow at least in a top surface of the mounting column (11); a plurality of blades (12) arranged outside the mounting column (11) in a circumferential direction of the mounting column (11), each blade (12) having a radial inner end connected to the mounting column (11) and elastically swingable with respect to the mounting column (11).