2026-04-10Views：
Screw air compressor is a kind of compressed air equipment widely used in various industrial fields. According to its different characteristics, screw air compressor can be divided into the following types:
according to the number of screw and working principle:
twin-screw air compressor: This type of air compressor uses two screw rotors for compression, which has high compression efficiency and stability. Twin-screw air compressor is widely used in the industrial field, especially suitable for medium, high pressure and large flow of compressed air demand.
Single-screw air compressor: Unlike common twin-screw air compressors, the compression process of a single-screw air compressor may also involve two-stage compression of two screw rotors. Although it performs well in some specific applications, its overall compression efficiency and stability may be different from that of a twin-screw air compressor. At present, on the market, single screw air compressor is relatively rare, more used in some special fields.
According to the use of lubricating oil in the compression process:
oil-injected screw air compressor (micro-oil screw air compressor): In this type of air compressor, lubricating oil is injected into the compression chamber to play the role of lubrication, cooling and sealing. Although compressed air may contain a small amount of lubricating oil, this is acceptable in many applications. The oil-injected screw air compressor has good performance and is suitable for various compressed air requirements.
Oil-free screw air compressor: Unlike oil-injected screw air compressors, oil-free screw air compressors do not use lubricating oil in the compression chamber, which means that the output of compressed air does not directly contain oil. However, its synchronous gears and other components may still require the use of lubricating oil. Oil-free screw air compressor is suitable for occasions with higher requirements for air quality, such as electronics manufacturing. However, it should be noted that although the exhaust gas does not contain oil, the ambient air may still contain oil and may require post-treatment equipment to remove the oil.
In addition, the screw air compressor can also be classified according to the cooling mode, driving mode, transmission mode, etc. For example, according to the cooling mode can be divided into water-cooled and air-cooled; according to the driving mode can be divided into electric air compressor and diesel air compressor.
When selecting the appropriate type of screw air compressor, it is necessary to evaluate the actual application needs and occasions in order to achieve the best performance and economic benefits. Hope the above content can provide you with reference.
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