What are the general lubrication methods for refrigeration compressors of screw chillers?

1. Centrifugal oil supply lubrication

This method is currently generally used in hermetic compressors where the crankshaft is installed vertically. It uses the centrifugal force of the crankshaft when it rotates, so that the lubricating oil in the center of the crankshaft flows to both sides and the upper part of the shaft under the action of the centrifugal force. The friction part is lubricated. Chiller manufacturers

2. Splash lubrication

This method is generally used for small open-type or semi-hermetic compressors. It uses the crankshaft or the accessories provided by the crankshaft to contact the oil surface when rotating, so that the lubricating oil splashes and the friction parts are lubricated.

3. Mechanical oil pump for lubrication

This method is generally used for medium and large compressors. It uses mechanical oil pumps (commonly gear pumps, rotor pumps, crescent pumps, etc.) to suck and pressure send lubricating oil to various friction parts.