Trane TRG-TRC004-EN manual +HOLFDO5RWDU\6FUHZ&RPSUHVVRU, Helical-Rotary Screw Compressor

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Compressor Types

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Figure 14

In this example scroll compressor, refrigerant vapor enters through the suction opening. The refrigerant then passes through a gap in the motor, cooling the motor, before entering the compressor housing. The refrigerant vapor is drawn into the scroll assembly where it is compressed, discharged into the dome, and finally discharged out of the compressor through the discharge opening.

In the air-conditioning industry, scroll compressors are widely used in heat pumps, rooftop units, split systems, self-contained units, and even small water chillers.

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Figure 15

Helical-Rotary (Screw) Compressor

Similar to the scroll compressor, the helical-rotary compressor traps the refrigerant vapor and compresses it by gradually shrinking the volume of the refrigerant. This particular helical-rotary compressor design uses two mating screw-like rotors to perform the compression process.

10 TRG-TRC004-EN