Patent ID: 8342825
Filing Date: 2013-01-01
Classification: F04C

Abstract:
1. A 2 stage rotary compressor, comprising: a hermetic container; a 2 stage compression assembly provided in the hermetic container, wherein a low pressure compression assembly, a middle plate and a high pressure compression assembly are successively stacked from any one of upper and lower portions; a first discharge port for discharging middle pressure refrigerant compressed in the low pressure compression assembly; a second discharge port for discharging high pressure refrigerant compressed in the high pressure compression assembly; and a third discharge port positioned at any one of the upper and lower portions of the 2 stage compression assembly to discharge high pressure refrigerant compressed in the 2 stage compression assembly to the hermetic container, wherein an area of the third discharge port is larger than 0.5 times of an area of the first discharge port and smaller than 1.0 times thereof.