Oil injected screw air compressor working principle
Oil injected screw air compressor is defined as the most widely used air compressors in factories, and their excellent performance is mainly due to their own advanced structure. The oil-injected screw air compressor is a working volume used for the rotational movement of a positive displacement gas compression machine.
Gas compression depends on the volume change, and the volume change is achieved by means of a pair of compressors rotating in the compressor housing.
Oil-injected screw compressor vs oil-free
First of all, the current industrial use is basically an oil-injected screw air compressor. Low cost is one aspect. Not every company has such high requirements for compressed air is the main reason.
Oil-free screw air compressors do not involve oil in the compressed air process, so the compressed air can be oil-free and suitable for high-quality air applications, such as food, biopharmaceuticals, precision spraying, and other industries.
Oil-injected screw compressors provide compressed media with varying oil content. Oil-free screw compressors provide oil-free compression media. The single-stage pressure ratio of the oil-injected screw machine is as high as 13. Oil-free screw compressors have a low single-stage pressure ratio, generally less than three. For power compressors, two-stage compression is required.