Patent ID: 11959480
Assignee: FUJITSU GENERAL LIMITED
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. The rotary compressor according to claim 1, wherein, in the axial direction of the rotating shaft, a gap between the at least one end face of the piston and at least one end plate of the upper end plate and the lower end plate is greater than 0, and is 1/1000 or less of a height of the piston in the axial direction, and
in the oil-film retention region, an area ratio, which is occupied by a total of opening areas of the recessed portions to an area of the at least one end face, is 40% or less, and a depth of each recessed portion to the at least one end face is 3 μm or less.