2026-04-10Views：
There are several key differences between oil-free scroll air compressors and oil-free screw air compressors:
working principle:
the oil-free scroll air compressor rotates around the base circle center of the fixed scroll through the movable scroll and meshes with each other to realize the process of suction, compression and exhaust.
Oil-free screw air compressor is dependent on the device in the casing, mutually parallel meshing of the male and female rotor cogging volume change, in order to achieve the purpose of compressed air.
Structure and characteristics:
the oil-free scroll air compressor has few main parts, no suction valve, exhaust valve and complex motion mechanism, and no synchronous gear. Its structure is simple, compact and compact. This makes it have higher reliability, lower maintenance costs and longer service life. At the same time, its manufacturing cost is relatively low.
The structure of the oil-free screw air compressor is more complex and there are many parts, which leads to relatively high maintenance costs. However, it has better adaptability in some applications, such as large flow of compressed air demand.
Operating characteristics:
the noise and vibration of oil-free scroll air compressor are relatively low, which is very suitable for occasions with strict requirements on noise and vibration, such as hospitals, laboratories, food industry, etc. Its energy efficiency is also high, in line with the current trend of environmental protection and energy saving.
The gear teeth of the oil-free screw air compressor may produce a large noise, especially at high speed. Its energy efficiency is slightly lower than that of oil-free scroll compressors, but it can still meet the needs of most industrial applications.
Scope of application:
the application field of oil-free scroll air compressor is relatively more specific, such as food, medicine, electronics and other industries, as well as places with strict requirements on air quality.
The application field of oil-free screw air compressor is more extensive, covering machinery, metallurgy, electronic power, chemical industry, mining, textile, transportation and other fields.
In summary, there are obvious differences between oil-free scroll air compressor and oil-free screw air compressor in working principle, structure and characteristics, operating characteristics and application range. The specific choice of which type of air compressor should be determined according to actual needs and specific application scenarios.
Shanghai Granklin Group Co., Ltd. is a modern enterprise specializing in the design and manufacture of air compressors. Its main products include water-lubricated air compressors, oil-free air compressors, variable frequency air compressors, etc. As a well-known brand in the air compressor industry, Shanghai Grank
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