Patent ID: 7722343

Claim:
A sealed-type rotary compressor comprising: a sealed casing which stores lubricant on the bottom thereof; an electric motor unit which is housed in the sealed casing; a compression mechanism which is housed in the sealed casing, and has a cylinder that forms a cylinder chamber, a roller that eccentrically rotates in the cylinder chamber, and a vane that makes a reciprocating motion as the roller rotates; a rotary shaft which is directed in the vertical direction, pivotally supported by a main bearing and a sub-bearing and couples the electric motor unit and the compressor mechanism; and a roller bearing provided between the roller and a crank shaft unit of the rotary shaft, wherein the roller is formed integrally with an outer circumference of the roller bearing; a first opening which is provided to the rotary shaft along the center axis from one end face thereof to the other end face side and introduces lubricant from the bottom of the sealed casing; and a second opening, one end of which opens to the first opening and the other end of which opens to the outer circumferential surface of the rotary shaft and opens towards a direction of 30 degrees to 150 degrees from the vane when the crank shaft unit is located with the eccentric direction being located 180 degrees from the vane, and which feeds lubricant to the roller bearing; wherein the second opening opens on the upper side of the roller bearing.