Air Stop Sheet Bending Section Resolves Back-Pressure in Compressor Pistons
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Solution Overview
Problem
Conventional air compressors face issues with incomplete discharge of compressed air due to the air stop sheet causing back-pressure resistance, leading to increased loading and reduced service life.
Innovation Solution
The air stop sheet of the piston features a bending section with a positioning zone and an acting zone, allowing it to lift relative to the air channel and conduit when the piston stops, ensuring smooth communication and balancing cylinder pressure with the atmosphere, thus preventing additional resistance during the upward moving stroke.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the air stop sheet closes the conduit of the head of the piston to prevent air leakage, then airtightness is improved, but back-pressure resistance increases and service life decreases
Solution Approach 1:
The air stop sheet is designed with a bending section that allows it to dynamically change its position between a closed state (when the piston is stationary) and an open state (when the piston moves upward). This dynamic behavior enables the sheet to maintain airtightness during stopping while preventing back-pressure resistance during operation, thereby extending service life.
Solution Approach 2:
The bending section changes the geometric parameter of the air stop sheet from a flat configuration to a lifted configuration. This parameter change allows the sheet to transition between sealing the conduit and opening it to the air channel, resolving the contradiction between maintaining airtightness and preventing back-pressure resistance.
2Reliability
If the air stop sheet closes the conduit to prevent compressed air discharge, then air leakage is prevented, but the piston experiences additional resistance during upward movement
Solution Approach 1:
The bending section enables the air stop sheet to dynamically transition between a closed position (when the piston is stationary) and an open position (when the piston moves upward). This dynamic behavior allows the sheet to maintain airtightness during stopping while eliminating back-pressure resistance during the upward stroke, as the sheet opens to allow compressed air to escape and equalize pressure.
Solution Approach 2:
The bending section converts the potentially harmful effect of the air stop sheet blocking the conduit into a beneficial pressure equalization mechanism. When the piston moves upward, the bending section allows the sheet to lift and open, enabling compressed air to escape and atmospheric pressure to equalize with the cylinder pressure, thereby eliminating back-pressure resistance.
3Reliability
If the air stop sheet remains in a fixed closed position, then sealing is maintained, but pressure balance between cylinder and atmosphere is prevented
Solution Approach 1:
The bending section introduces dynamic movement to the air stop sheet, allowing it to transition between a closed position (maintaining sealing) and an open position (allowing pressure equalization). This dynamic capability resolves the contradiction by enabling the sheet to perform both sealing and pressure balance functions at different operational states.
Solution Approach 2:
The bending section changes the positional parameter of the air stop sheet relative to the conduit and air channel. This parameter change allows the sheet to alternately seal the conduit and open it to the air channel, thereby achieving both sealing and pressure balance as required.
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 solution enhances the safety and service life of the air compressor by preventing back-pressure resistance and ensuring easy inflation of compressed air into deflated objects.
Implementation Method 1
a spring fitted on the column and extending through the air channel of the head along the cavity of the piston rod so that the spring abuts against the back surface of the acting zone of the air stop sheet, the air stop sheet is pushed by the spring to turn on at an open angle θ
Data Source
AI summary
An air stop sheet of a piston of a cylinder, the piston is accommodated in an air compressor, and an air stop sheet is accommodated on a head of the piston. The air stop sheet includes a bending section having a positioning zone and an acting zone and configured to be a boundary line of the acting zone and the positioning zone. The acting zone backing the cylinder turns on relative to the plane of the head at an open angle θ, thus producing an air flowing space. A piston rod extends downward from the head and includes a cavity, an air conduit, a column, and a spring configured to abut against the acting zone of the air stop sheet. The air stop sheet is pushed by the spring to turn on at an open angle θ, and the air conduit and the air channel communicate with atmosphere.