| 摘要 |
The present invention provides a 2 stage rotary compressor including a hermetic container (101), a 2 stage compression assembly provided in the hermetic container (101) and including a low pressure compression assembly (120), a middle plate (140) and a high pressure compression assembly (130), a low pressure refrigerant inflow portion (126) provided in the low pressure compression assembly (120) to introduce low pressure refrigerant, and a middle pressure refrigerant inflow portion (130a) provided in the high pressure compression assembly (130) to introduce middle pressure refrigerant compressed in the low pressure compression assembly (120), wherein a diameter of the middle pressure refrigerant inflow portion (130a) larger than 0.5 times of a diameter of the low pressure refrigerant inflow portion (126) and smaller than 1.1 times thereof. This configuration can prevent a pressure of middle pressure refrigerant sucked into the high pressure compression assembly (130) from being excessively raised or dropped by appropriately controlling a volume flow of refrigerant introduced into the high pressure compression assembly (130) through the middle pressure refrigerant inflow portion (130a).
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