Patent ID: 9745980
Date: 2017-08-29
CPC Classifications: F04C,F25B

Claim:
1. A hermetic type compressor comprising a closed case, a motor portion which is housed in the closed case, and a compression mechanism portion which is housed in the closed case and is driven by a rotating shaft coupled to the motor portion so as to compress a working fluid, the compression mechanism portion including a first bearing, a first cylinder, a partition plate, a second cylinder, and a second bearing, which are provided in order along an axial direction of the rotating shaft, and having a first cylinder chamber formed in the first cylinder closed at two ends by the first bearing and the partition plate so as to compress the working fluid and a second cylinder chamber formed in the second cylinder closed at two ends by the partition plate and the second bearing so as to compress the working fluid, in which the working fluid compressed in the first cylinder chamber and the working fluid compressed in the second cylinder chamber are discharged into a space in the closed case, wherein an in-partition-plate space which communicates with the space in the closed case is formed inside the partition plate, the compressor is provided, as discharge ports through which the working fluid compressed in the first cylinder chamber is discharged into the space in the closed case, with a first bearing discharge port formed in the first bearing and a first partition plate discharge port formed in the partition plate, the compressor is provided, as discharge ports through which the working fluid compressed in the second cylinder chamber is discharged into the space in the closed case, with a second bearing discharge port formed in the second bearing and a second partition plate discharge port formed in the partition plate, and a cross-sectional area of the first partition plate discharge port is formed to be smaller than a cross-sectional area of the first bearing discharge port, and a cross-sectional area of the second partition plate discharge port is formed to be smaller than a cross-sectional area of the second bearing discharge port.