Oil Separator Valve Body Apertures for Compressor Pressure Control
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Solution Overview
Problem
Oil-lubricated compressors face contamination and oil loss due to rapid venting and pressure drops, which existing solutions, such as downstream protection valves, are ineffective in addressing, especially in applications with frequent starting and stopping cycles.
Innovation Solution
A separator with a hollow valve body that moves between open and closed positions, featuring primary and secondary fluid apertures, is integrated into the oil-lubricated compressor to control fluid flow, preventing oil carryover during pressure variations by maintaining internal pressure and allowing minimal flow during depressurization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If downstream protection valves are used to prevent oil carryover, then oil contamination is reduced, but the valves are less able to react quickly and increase compressor internal pressure
Solution Approach 1:
The patent introduces an intermediary valve body with selective apertures positioned between the separator chamber and outlet. This intermediary structure mediates the flow control function, allowing rapid response to pressure changes while preventing oil carryover, thus resolving the contradiction between reaction speed and contamination prevention.
Solution Approach 2:
The valve body is designed with different aperture characteristics at different locations - primary apertures for rapid flow control and secondary apertures for pressure maintenance. This local differentiation allows the single component to simultaneously achieve fast reaction and controlled oil prevention.
2Object-affected harmful factors
If downstream protection valves are used to prevent oil carryover, then oil contamination is reduced, but compressor internal pressure increases
Solution Approach 1:
The valve body apertures dynamically change the flow parameters based on pressure conditions. During rapid venting, the primary apertures close to prevent oil carryover; during normal operation, the secondary apertures maintain adequate flow to prevent pressure buildup, thus resolving the pressure-contamination contradiction.
3Object-affected harmful factors
If the valve body is completely closed to prevent oil flow, then oil contamination is prevented, but fluid communication between separator chamber and outlet is blocked
Solution Approach 1:
The valve body is segmented into multiple aperture systems - primary apertures that can close to prevent oil carryover, and secondary apertures that remain open to maintain necessary fluid communication. This segmentation allows the valve to prevent oil contamination while preserving adequate productivity.
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 prevents oil contamination and loss by maintaining compressor internal pressure and allowing sufficient airflow during depressurization, eliminating the need for downstream protection valves and reducing oil consumption.
Implementation Method 1
a biasing member which biases the valve body away from the second closed position
Implementation Method 2
A filter element is housed within the separator to ensure that lubricating oil is separated from the air/gas
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
An oil-separator (2) for an oil-lubricated compressor comprises a separator housing (40), a separator inlet (58) connectable to the compressor (1), a separator outlet and a separator chamber defined in the separator housing (40). The separator chamber is in fluid communication with the separator inlet (58) and the separator outlet. A hollow valve body (12) is located within the separator outlet and moveable between a first open position and a second closed position. A biasing member (14) biases the valve body (12) away from the second closed position. The valve body (12) has an open end (16) within the separator outlet, a closed end (18) located outside the separator outlet in the separator chamber, and at least one primary fluid aperture (22) extending through a wall of the valve body (12) so as to selectively permit fluid flow from the separator chamber into the separator outlet. The at least one primary fluid aperture (22) is at least partially exposed to the separator chamber when the valve body (12) is not in the second position. The valve body (12) has at least one secondary fluid aperture (24) extending through the closed end (18) such that the separator chamber is still in fluid communication with the separator outlet when the valve body (12) is in the second closed position.