Composite Liquid Separator Housing for Oil-Free Compressed Air
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Solution Overview
Problem
Existing liquid separators for compressors, particularly in the pharmaceutical, paint, and electronics industries, are either expensive and heavy due to the use of stainless steel or fail to provide completely oil-free compressed air, posing contamination risks and requiring additional cooling in oil-free compressors.
Innovation Solution
A lightweight and cost-effective liquid separator with a cylindrical housing and tangentially positioned inlet in the lid, utilizing a composite sleeve made from materials like HDPE and glass fibers, which allows for efficient cyclonic separation of liquid particles without compromising the structural integrity of the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stainless steel is used for the housing to prevent rust and ensure durability, then reliability is improved, but weight and cost increase
Solution Approach 1:
The patent applies composite materials by combining a plastic or polymer sleeve (such as PE, HDPE, LDPE, PET, or fluopolymer) with composite materials made of glass fiber, aramid, carbon fiber, or basalt fiber in a resin matrix. This composite construction provides rust resistance and structural integrity while significantly reducing weight compared to solid stainless steel housing.
Solution Approach 2:
The patent uses a flexible polymer sleeve as the base structure around which the composite is wound. This sleeve provides the necessary flexibility and form factor while the composite layers provide structural strength and corrosion resistance, eliminating the need for heavy rigid stainless steel construction.
2Reliability
If stainless steel is used for the housing to ensure durability, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The composite material construction provides durability equivalent to stainless steel through the combination of corrosion-resistant polymer sleeve and strong fiber-reinforced composite layers, while being more cost-effective as these materials are generally less expensive than stainless steel and can be manufactured using efficient winding processes.
Solution Approach 2:
The patent employs cheaper alternative materials (plastic/polymer composites) that, while potentially having different service life characteristics than stainless steel, provide sufficient durability for the application at a lower cost, making the overall system more economically viable.
3Productivity
If the inlet is positioned in the housing wall for cyclonic flow, then separation efficiency is improved, but structural integrity of the wall deteriorates
Solution Approach 1:
The patent extracts the inlet function from the housing wall by positioning it in the lid instead. This allows the housing wall to maintain its full structural integrity without openings, while the inlet in the lid still enables the liquid-gas mixture to tangentially enter the separation chamber for effective cyclonic separation.
Solution Approach 2:
The patent moves the inlet from a lateral position in the housing wall to a vertical position in the lid, changing the spatial dimension of the inlet. This dimensional change allows the inlet to be positioned where it does not compromise the structural strength of the cylindrical housing wall while still achieving the required cyclonic flow pattern.
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 enables the generation of oil-free compressed air at a lower cost, reducing the risk of contamination and weight, while maintaining high separation efficiency and gas tightness, allowing for the use of materials other than stainless steel.
Implementation Method 1
the liquid-gas mixture will be purified by the presence of heavier liquid particles being driven or projected against the walls of the housing by the centrifugal forces caused by the cyclonic flow of the mixture
Implementation Method 2
the liquid-gas mixture will be purified by the presence of heavier liquid particles being driven or projected against the walls of the housing by the centrifugal forces caused by the cyclonic flow of the mixture, created by the tangentially positioned inlet in the cylindrical wall of the housing
Data Source
AI summary
Liquid separator provided with a housing which includes an at least partially cylindrical wall defining a separation chamber, closed at one end by a base and at the other end by a lid in which there is a gas outlet for the discharge of the treated gas. A shield is provided in the separation chamber surrounding the gas outlet in the separation chamber from the aforementioned lid. The liquid separator has an inlet for a liquid-gas mixture to be treated. The inlet is located in the lid so that the liquid-gas mixture tangentially enters the separation chamber in the space between the wall and the shield.