What is a scroll compressor || how to work scroll compressor || scroll compressor

Scroll Compressor

Basic compression

The basic principle of compressor scroll compression is the interaction between fixed scroll  and orbiting scroll.
The two scrolls intersect identical with each other but differ by 180 degrees. The orbit of the moving scroll follows the path formed by the immovable scroll. Both are tangent based on centrifugal force. The compression chamber is formed from the outside to the inside where the volume of the compression chamber is reduced, as a result the pressure rises and at the end of the compression, the refrigerant exits the middle of the two scrolls.

Scroll compressor process


Low temperature and low pressure refrigerant gas enters the suction chamber into the compressor chamber. This refrigerant then comes in contact with the compressor motor which has a higher temperature so that the heat flow from the motor to the refrigerant occurs. This refrigerant then enters the compressor intake to start the compression process. Refrigerant trapped in the scroll space is then compressed and then removed from the middle of the scroll.

During the compression process, the pressure and temperature of the refrigerant gradually increase because the volume of the compression chamber is reduced.
This high-pressure vapor refrigerant then exits the compressor through the discharge pipe. At the discharge there is a valve disc that serves to prevent back pressure from the discharge or condenser when the compressor dies. Valve disc functions like a check valve or one-way valve.

Between the discharge and suction chamber there is a pressure relief valve that serves to dispose of pressure from the discharge to the suction in case of excessive pressure.

Lubricants at the bottom based on centrifugal force going up to the top to lubricate moving parts through the existing shaft compressor section

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