Trane TRG-TRC004-EN manual +HOLFDO5RWDU\&RPSUHVVRU

period one

Compressor Types

notes

+HOLFDO￿5RWDU\￿&RPSUHVVRU

IHPDOH￿URWRU

PDOH￿URWRU

KRXVLQJ

Figure 16

The rotors are meshed and fit, with very close tolerances, within the compressor housing. The gap between the two rotors is sealed with oil, preventing the compressed refrigerant vapor from escaping through the mating surfaces.

Only the male rotor is driven by the compressor motor. The lobes of the male rotor engage and drive the female rotor, causing the two parts to counter- rotate.

+HOLFDO￿5RWDU\￿&RPSUHVVRU

LQWDNH

SRUW

SRFNHW￿RI￿UHIULJHUDQW￿YDSRU

Figure 17

Refrigerant vapor enters the compressor housing through the intake port and fills the pockets formed by the lobes of the rotors. As the rotors turn, they push these pockets of refrigerant toward the discharge end of the compressor.

After the pockets of refrigerant travel past the intake port area, the vapor, still at suction pressure, is confined within the pockets by the compressor housing.

TRG-TRC004-EN 11