Centrifugal Gas Separator Rotor Guide Surface Design
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Solution Overview
Problem
Existing centrifugal separators for cleaning gas vented from internal combustion engines face issues such as pressure losses in fluid pathways, contamination of cleaned gas, and assembly difficulties due to manufacturing techniques and construction features.
Innovation Solution
A gas cleaning separator design featuring a rotor assembly with a housing that includes a guide surface on the blade elements and a flow path with specific geometries to minimize pressure losses and prevent contamination, along with improved assembly methods to enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the separator uses conventional fluid pathways, then the structure is simple, but pressure losses increase which adversely affect flow capacity
Solution Approach 1:
The patent applies curved surfaces and smooth transitions in the fluid pathways, replacing sharp corners and straight-line connections with curved geometries. This reduces flow separation and turbulence, thereby minimizing pressure losses while maintaining structural simplicity, directly improving flow capacity.
Solution Approach 2:
The patent optimizes geometric parameters of the fluid pathways, including angles, radii, and cross-sectional areas, to achieve minimal pressure losses. By carefully selecting and adjusting these parameters, the design maximizes flow capacity without complicating the overall structure.
2Ease of manufacture
If the separator uses certain construction features, then assembly is simplified, but reliability problems occur
Solution Approach 1:
The separator is divided into modular components that can be assembled separately and then connected. This segmentation allows for easier manufacturing and assembly of individual parts while maintaining high reliability through precise connection interfaces and sealing mechanisms designed for each module.
Solution Approach 2:
Certain components are pre-assembled or pre-positioned during manufacturing to ensure correct alignment and reduce assembly complexity. This preliminary action ensures that when final assembly occurs, the components are already in optimal positions, reducing the risk of assembly errors and improving reliability.
3Productivity
If the separator design allows high flow capacity, then productivity increases, but cleaned gas may become contaminated
Solution Approach 1:
The patent introduces intermediate chambers or buffer zones between the separation area and the gas outlet. These intermediary spaces allow for final settling of any remaining oil droplets and provide a transition zone that protects the cleaned gas from contamination while maintaining high flow capacity through the separator.
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 improves the flow capacity and reduces contamination of cleaned gas, allowing for more efficient separation and assembly, addressing the limitations of prior art separators.
Implementation Method 1
a leading edge portion of the at least one blade element comprising a guide surface such that, in use, a mixture of substances flowing towards said leading edge portion is guided by the guide surface towards alignment with the blade element
Implementation Method 2
at least one blade element located in said space and rotatable about an axis so as to impart motion on a mixture of substances to be separated
Implementation Method 3
a centrifugal separator for the cleaning of a gaseous fluid
Data Source
AI summary
The present invention relates to a separator and more specifically, but not exclusively, to a centrifugal separator for the cleaning of a gaseous fluid. A centrifugal separator is provided as comprising a housing defining an inner space, and a rotor assembly for imparting a rotary motion onto a mixture of substances to be separated. The rotor assembly is located in said inner space and is rotatable about an axis relative to the housing. The rotor assembly comprises an inlet for receiving said mixture of substances, an outlet from which said substances are ejected from the rotor assembly during use, and a flow path for providing fluid communication between the inlet and outlet, wherein the outlet is positioned more radially outward from said axis than the inlet.