Two Stage Gas-Liquid Separator With Bypass Valve
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Solution Overview
Problem
Existing gas-liquid separators for internal combustion engines face inefficiencies in oil mist removal and breather functionality, particularly in handling plugged coalescer filters, which disrupt the separation process and require complex bypass mechanisms to maintain operation.
Innovation Solution
A two-stage drainage gas-liquid separator assembly incorporating an inertial gas-liquid impactor and a coalescer filter with a pressure-responsive valve in an auxiliary bypass passage, allowing gas to bypass a plugged coalescer filter and maintain operation by redirecting the gas flow through an auxiliary passage when pressure conditions are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coalescer filter is used for liquid particle separation, then liquid separation efficiency is improved, but the system becomes vulnerable to plugged filters that disrupt the separation process
Solution Approach 1:
An auxiliary bypass passage is introduced as an intermediary pathway that allows gas to bypass the coalescer filter when it becomes plugged. This bypass passage includes a pressure-responsive valve that mediates between the main filtration path and the bypass path, automatically opening when filter pressure differential exceeds a threshold, thus preventing disruption of the separation process while maintaining filtration efficiency under normal conditions
2Reliability
If a bypass mechanism is added to handle plugged filters, then continuous operation is enabled, but device complexity increases
Solution Approach 1:
The bypass mechanism is designed to be self-regulating through a pressure-responsive valve that automatically opens when the coalescer filter becomes plugged and closes when the filter is clear. This eliminates the need for external control systems, sensors, or manual intervention, thereby enabling continuous operation while minimizing the addition of complex components
Solution Approach 2:
The gas flow path is segmented into a main path through the coalescer filter and a separate auxiliary bypass path. This segmentation allows independent operation of each path, enabling the system to route gas through the bypass when the filter is blocked while maintaining the filtration path as the primary route under normal conditions, thus achieving continuous operation with manageable complexity
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
Ensures continuous operation of the gas-liquid separator by preventing disruption from plugged coalescer filters, maintaining efficient liquid separation and oil mist removal in internal combustion engines, while allowing for easy filter replacement and reduced complexity in the bypass mechanism.
Implementation Method 1
an inertial impactor is provided in the path of the accelerated gas-liquid stream causing a sharp directional change thereof which in turn causes liquid particle separation from the gas-liquid stream
Implementation Method 2
a coalescer filter effects liquid particle separation, and coalesces separated liquid particles
Implementation Method 3
a pressure responsive valve is provided in the auxiliary bypass passage, which valve is open above a designated gas pressure in plenum 50 to pass gas from first plenum 50 to second plenum 54, and which valve is closed below a designated pressure to block passage of gas from plenum 50 to plenum 54
Data Source
AI summary
A two stage drainage gas-liquid separator assembly includes an inertial gas-liquid impactor separator having one or more nozzles accelerating a gas-liquid stream therethrough, and an inertial impactor in the path of the accelerated gas-liquid stream and causing liquid particle separation from the gas-liquid stream, and further includes a coalescer filter downstream of the inertial gas-liquid impactor separator and effecting further liquid particle separation, and coalescing separated liquid particles.