空滤品质不但对空压机能效有影响，并且影响还非常大。空滤主要从两方面影响能效：
The quality of air filter not only has an impact on the energy efficiency of air compressor, but also has a great impact. Air filtration mainly affects energy efficiency from two aspects
1、过滤精度。如果采用过滤精度低的空滤，会导致大量灰尘吸入，灰尘除了影响润滑油品质与空压机零部件以外，被吸入的大量灰尘吸附在油分表面，会快速提高油分内压（特别是用户使用环境很差的时候），导致油分中、后期压差很大。很多人都知道，油分压差一公斤，耗电量增加7%，使用过滤精度高的优质空滤，可以大大降低中、后期油分的压差，达到提高空压机能效的目的。
1. Filtering accuracy. If the air filter with low filtering accuracy is used, a large amount of dust will be inhaled. In addition to affecting the quality of lubricating oil and air compressor parts, a large amount of dust will be absorbed on the oil surface, which will quickly increase the internal pressure of oil (especially when the user's working environment is very poor), resulting in a large pressure difference between the middle and later stages of oil. As many people know, the power consumption increases by 7% when the oil pressure difference is one kilogram. Using high-quality air filter with high filtering accuracy can greatly reduce the oil pressure difference in the middle and later stages, so as to improve the energy efficiency of the air compressor.