Sealed Oil-Free Oxygen Compressor Layout for Dust-Resistant Reliability
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Solution Overview
Problem
Existing oil-free compressors for oxygen generation suffer from reliability issues due to open structures that allow unclean air ingress, leading to air leakage, sealing aging, and reduced service life, especially in dusty environments, and are unsuitable for use in regions with wind-blown sand.
Innovation Solution
A full-sealing positive pressure and negative pressure integrated oil-free compressor design featuring vacuum and positive pressure air passage structures mounted on a motor, with air cylinders and eccentric wheel groups, eliminating surface air passages and incorporating polytetrafluoroethylene materials and self-lubricating coatings to enhance sealing and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If air passages are arranged on the supporting body for connection with the air cylinder, then the supporting body can provide structural support and air flow paths, but the self strength of the supporting body is reduced and sealing reliability deteriorates
Solution Approach 1:
The patent divides the air passage structure from the supporting body by introducing a separate air passage supporting body. The air passages are arranged on this dedicated component rather than directly on the main supporting body, thereby maintaining the structural integrity and sealing reliability of the supporting body while still providing the necessary air flow paths for the air cylinder connection.
2Ease of manufacture
If the motor and compressor structure are in an open state, then the structure is simple and easy to manufacture, but unclean air is sucked in during operation affecting oxygen purity and service life
Solution Approach 1:
The patent employs sealing structures including sealing rings and sealing plates that create a closed environment around the motor and compressor components. These sealing elements prevent unclean air from entering the system during operation, ensuring oxygen purity is maintained while still allowing for a relatively simple and manufacturable design.
3Ease of operation
If multiple space hole positions are arranged for sealing connection, then the air cylinder can be connected to the supporting body, but the fault rate of sealing aging and air leakage increases
Solution Approach 1:
The patent extracts the air passage functionality from the main supporting body and places it on a separate air passage supporting body. This reduces the number of sealing connection points required on the main supporting body, thereby reducing the fault rate of sealing aging and air leakage while maintaining the necessary connection capabilities between the air cylinder and the supporting structure.
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 achieves a compact, reliable, and durable compressor with reduced air leakage, improved sealing, and extended service life, capable of operating in harsh environments by preventing dust ingress and ensuring efficient air compression.
Implementation Method 1
incorporating polytetrafluoroethylene materials and self-lubricating coatings to enhance sealing and durability
Implementation Method 2
incorporating polytetrafluoroethylene materials and self-lubricating coatings to enhance sealing and durability
Data Source
AI summary
A full-sealing positive pressure and negative pressure integrated oil-free compressor for oxygen generation includes a motor, a vacuum air passage structure, a supporting body, a positive pressure air passage structure and air cylinders, wherein the vacuum air passage structure, the supporting body and the positive pressure air passage structure are fixedly mounted on an upper surface of the motor in sequence, and no air passage is arranged on a surface of the supporting body. According to the present disclosure, the whole structure is compact and can be stably mounted on a motor body, using demands for miniaturization and compactness of the compressor are met, the structure of the supporting body is also adjusted, no air passage is arranged on the surface of the supporting body, the number of sealing structures needing to be arranged is reduced, the reliability is improved, machining is simpler, and technical assembling difficulty is lowered significantly.