2026-04-10Views：
The difference between water injection screw compressor and oil injection screw compressor is mainly reflected in the following aspects:
lubrication and cooling method:
the water-jet screw compressor sprays water into the compression chamber during the compression process, which can not only play a lubricating role, but also achieve a cooling effect, while reducing noise.
The oil-injected screw compressor adopts an oil-injected lubrication system. When the lubricating oil is injected into the compression chamber, a film is formed, which reduces the friction loss and heat loss of the machine.
Energy Efficiency and Temperature Control:
because the water jet screw compressor directly uses water to enter the cylinder for cooling, the cooling effect is better, the energy consumption is lower, and the exhaust temperature can be controlled at a lower level, usually about 50 ℃, so it is not necessary to be equipped with an after-cooler.
Although oil-injected screw compressors can also maintain good temperature stability, in contrast, their discharge temperatures may be high and require additional cooling measures.
Applicability and scope of application:
the water jet screw compressor is especially suitable for compressing special gases with low critical point, and the air discharged is very clean, it can be completely oil-free and almost no water consumption.
Oil-injected screw compressors have a wider range of applications and can be applied to various industrial fields, such as pharmaceuticals, electronics, chemicals, etc., especially in working environments that require long-term operation and high-load operation.
Maintenance and maintenance:
water-injected screw compressors may have lower maintenance costs due to the simple system structure.
The maintenance of the oil-injected screw compressor is relatively simple, mainly requiring regular replacement of lubricating oil and filters, and regular cleaning and maintenance.
Environmental protection and safety:
the water-jet screw compressor uses water as a lubricating and cooling medium, which is environmentally friendly and has high safety.
Oil-injected screw compressors need to pay attention to the leakage and handling of lubricating oil during use to ensure environmental protection and safety.
In summary, there are significant differences between water-injected screw compressors and oil-injected screw compressors in terms of lubrication and cooling methods, energy efficiency and temperature control, applicability and application scope, maintenance and maintenance, and environmental protection and safety. Which type of compressor to choose depends on the specific application requirements and working environment.
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