period one
Compressor Types
notes
+HOLFDO5RWDU\&RPSUHVVRU
IHPDOHURWRU
PDOHURWRU
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.
+HOLFDO5RWDU\&RPSUHVVRU
LQWDNH
SRUW
SRFNHWRIUHIULJHUDQWYDSRU
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.
| 11 |
