When choosing an oiled compressor or an oil-free compressor, we need to evaluate it according to the specific application scenario and needs. Here is a detailed analysis and comparison of the two compressors:
Oiled compressors:
Merit:
Smooth work: The mechanical parts of the oiled compressor work more smoothly due to the lubrication effect of the lubricating oil, which can withstand higher loads and have higher long-term stability.
Strong load capacity: The oiled compressor can cope with large working loads and adapt to a variety of industrial environments.
Shortcoming:
Oil pollution: Oil vapor may be compressed into the gas, which will have a negative impact on air quality, and is not suitable for occasions with high air quality requirements, such as food processing, medical equipment, etc.
Complex structure: Compared with oil-free compressors, the structure of oil-based compressors is more complex, including oil circuit management and other parts, and the maintenance cost is higher.
There are many fault points: the easy failure points are mainly concentrated in the oil circuit management, the rational use of compressor oil, etc., such as oil diameter blockage, oil pump failure, oil cylinder carbon deposit, etc.
Oil-free compressors:
Merit:
Pure air: No lubricating oil is required in the process of compressing the air, so the exhaust gas is very clean and free of oil pollution, which is suitable for occasions with high air quality requirements.
Simple structure: Oil-free compressors usually use technologies such as screw compressors or centrifugal compressors, with relatively simple structure, no cylinders, pistons and other components in traditional compressors, and low maintenance costs.
Low noise: The noise level is between 70-82 decibels, and no additional measures are required for noise reduction.
Energy-saving and environmentally friendly: no oil lubrication is required, which reduces energy consumption and environmental pollution.
Simple maintenance: The maintenance of Shanghai Gramlin Group’s water-lubricated oil-free air compressor is relatively simple, and it only needs to be regularly replaced and maintained by air and water filters.
Shortcoming:
Higher cost: Due to its high technical difficulty, the cost is higher than that of traditional oil-lubricated compressors.
Louder: Although it meets industry standards, it can be slightly louder than an oiled compressor.
Summary:
Application scenario: Oil-free compressors are more suitable for occasions with high air quality requirements, such as food processing, medical equipment, electronics industry, etc.; Oiled compressors, on the other hand, are more suitable for heavy-duty industrial applications where air quality is not a high priority.
Maintenance cost: The maintenance cost of oil-free compressors is relatively low, because its simple structure does not require frequent replacement of lubricating oil and filter elements; Oiled compressors, on the other hand, require more maintenance and upkeep.
Environmental protection: Oil-free compressor has more advantages in environmental protection, because the gas discharged by it is free of oil pollution; Oily compressors may produce oil contamination.
Therefore, when choosing oiled compressors and oil-free compressors, it is necessary to evaluate their advantages and disadvantages according to specific application scenarios and needs, and choose the most suitable compressor type.