There are several key differences between an oil-free scroll compressor and an oil-free screw compressor:
How it works:
The oil-free scroll air compressor is to realize the suction, compression and exhaust process by rotating the dynamic scroll disk around the center of the base circle of the static scroll disk and meshing with each other.
The oil-free screw air compressor relies on the change of the cogging volume of the yin and yang rotors installed in the casing and meshing in parallel to each other to achieve the purpose of compressing air.
Structure & Characteristics:
The oil-free scroll air compressor has few main parts, no suction valve, exhaust valve and complex moving mechanism, and no need for synchronous gears. It is simple, compact and compact. This results in high reliability, lower maintenance costs and a 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 has many parts, resulting in its relatively high maintenance cost. However, it is better adapted in some applications, such as high flow compressed air requirements.
Operational features:
The noise and vibration of the oil-free scroll air compressor are relatively low, which is very suitable for occasions with strict requirements for noise and vibration, such as hospitals, laboratories, food industry, etc. Its energy efficiency is also high, which is in line with the current trend of environmental protection and energy saving.
The gear clamping of an oil-free screw compressor may produce a lot of noise, especially at high speeds. Its energy efficiency is slightly lower than that of oil-free scroll air compressors, but it can still meet the needs of most industrial applications.
Applications:
The application fields of oil-free scroll air compressors are relatively more specific, such as food, medicine, electronics and other industries, as well as places with strict requirements for 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 compressors and oil-free screw air compressors in terms of working principle, structure and characteristics, operation characteristics and application range. The specific choice of which type of air compressor should be decided according to the actual needs and specific application scenarios.