Piston Air Compressor Pressure Relief Duct
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Solution Overview
Problem
Piston air compressors suffer from leakage issues due to diaphragm valve looseness, leading to high pressures and oil-laden air that can harm turbochargers in heavy motor trucks, necessitating the air to be routed through the internal combustion engine, causing environmental concerns and premature turbocharger aging.
Innovation Solution
Incorporating an air duct between the connection and suction chambers to divert excess compressed air from the pressure chamber into the suction chamber, reducing pressure buildup and oil-laden air flow, which can be safely discharged into the engine intake, thereby minimizing the risk to turbochargers and reducing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diaphragm valve is used as a check valve, then compressed air can be discharged through the pressure line, but leakage flow occurs causing high pressures and oil-laden air to flow into the compressor housing
Solution Approach 1:
The invention extracts the harmful air flow path by providing a separate discharge path through the air duct (50) that leads to the suction chamber. This allows the harmful, oil-laden air to be diverted and discharged separately from the main compressed air output, removing the harmful effect while maintaining the check valve's primary function.
Solution Approach 2:
The air duct (50) acts as an intermediary channel between the pressure chamber and the suction chamber. It provides a controlled path for the harmful air to escape through the partition into the suction chamber, where it can be safely discharged into the engine intake without contaminating the main compressed air system or environment.
2Stress or pressure
If compressed air flows along between the cylinder and piston, then high pressures are reached, but air containing lubricating oil pollutes the environment and harms turbocharger
Solution Approach 1:
The invention converts the harmful air flow that would otherwise escape into the environment into a beneficial discharge path. By routing this air through the air duct (50) to the suction chamber and then to the engine intake, the harmful oil-laden air is actually utilized as intake air for the engine, eliminating pollution while protecting the turbocharger from oil contamination.
3Object-generated harmful factors
If air duct is added to divert excess compressed air, then excessive pressure and oil-laden air flow are reduced, but device complexity increases
Solution Approach 1:
The invention merges the air duct (50) directly into the partition wall between the pressure chamber and suction chamber. This integration approach combines multiple functions (pressure relief, air diversion, and structural separation) into a single unified component, avoiding the need for separate complex mechanisms while effectively reducing excessive pressure and oil-laden air flow.
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 air duct significantly reduces air flow between the cylinder and piston, preventing excessive pressure and oil-laden air from reaching the compressor housing, thus protecting turbochargers and enhancing environmental safety by ensuring the air discharged is oil-free and non-harmful.
Implementation Method 1
part of the compressed air flowing from a pressure chamber of the piston air compressor during compression by the piston can escape into the suction chamber so that excessive pressure cannot be built up in either the pressure chamber or the connection chamber
Data Source
AI summary
A piston air compressor having a suction chamber and a connection chamber separated from the suction chamber. An air channel is provided from the connection chamber to the suction chamber.