Oil Separator Rotor Flow Path Segmentation
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Solution Overview
Problem
Existing oil separators face inefficiencies in separating mist oil from processing-target gas due to upward flow of blow-by gas pushing oil out with the gas discharge, and require significant configuration changes for intake and discharge above the rotor.
Innovation Solution
An oil separator design with a tubular case, partition walls, and a rotor that separates mist oil by flowing gas through an introduction path and chamber system, reducing flow speed to prevent oil from being discharged with the gas, and allowing for intake and discharge above the rotor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the rotor rotates to separate mist oil from processing-target gas, then the separation efficiency is improved, but the separated oil is pushed upward by the turning flow of blow-by gas and discharged together with the gas, deteriorating the oil removal efficiency
Solution Approach 1:
The internal space is divided into multiple functional zones using partition walls: a separation zone for centrifugal separation, a discharge zone for gas exit, and a collection zone for separated oil. This segmentation prevents the upward flow from carrying separated oil out of the system while maintaining efficient separation in the rotation zone.
Solution Approach 2:
Different regions of the device have different functional properties: the lower region has high-velocity rotating flow for separation, while the upper discharge region has controlled flow characteristics that prevent oil carryover. The partition walls create localized flow patterns that optimize separation in one area while preventing discharge issues in another.
2Device complexity
If the blow-by gas is discharged above the rotor, then the configuration is simplified, but significant configuration changes are required to conduct both intake and discharge above the rotor
Solution Approach 1:
The device utilizes vertical spatial arrangement to resolve the contradiction: intake occurs at the top above the rotor, separation occurs in the middle region, and discharge occurs at the bottom below the rotor. This three-dimensional arrangement allows both intake and discharge to be positioned conveniently while avoiding the need for significant configuration changes.
3Productivity
If the flow speed of blow-by gas is high to maintain separation force, then the separation process is efficient, but the separated oil is pushed upward and discharged with the gas
Solution Approach 1:
The flow path is segmented into a high-velocity separation section and a low-velocity discharge section. Partition walls guide the high-speed flow through the separation zone while directing the slower, oil-free gas to the discharge zone, preventing oil carryover while maintaining separation efficiency.
Solution Approach 2:
The partition walls act as intermediaries that separate the high-velocity inlet flow from the low-velocity discharge flow. They guide the flow patterns to ensure that separated oil remains in the collection zone while clean gas proceeds to discharge, mediating between the conflicting flow velocity requirements.
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 design enhances separation efficiency by keeping separated oil in the chamber and preventing its discharge with the gas, while enabling efficient intake and discharge operations above the rotor.
Implementation Method 1
the rotor rotates to separate the mist oil from the processing-target gas which is flowing from the center-side space to an outer periphery of the rotor
Data Source
AI summary
An oil separator separating mist oil from processing-target gas includes: a case, a first partition wall and a lower, second partition wall, both partitioning vertically an internal space of the case; a partition dividing a space between the first and second partition walls into an introduction path and a first chamber; a supply hole vertically penetrating the second partition wall from the introduction path to a separation chamber; a communication hole vertically penetrating the second partition wall from the first chamber to the separation chamber; a rotor in the separation chamber; a center-side space in a center part of the rotor, the center-side space communicating with the supply hole through an open, upper part of the center-side space. The rotor separates the mist oil from the processing-target gas flowing from the center-side space to an outer periphery of the rotor, where the separated oil is emitted. The processing-target gas flows into the first chamber through the communication hole.