Vane-type compressor

A vane-type compressor comprising:

• a sealed container;
• an oil reservoir disposed at a bottom portion of the sealed container, and configured to accumulate therein refrigerating machine oil;
• and
• an electrical drive element and a compressing element disposed in the sealed container, the compressing element including
• a cylinder having a cylindrical inner circumferential surface,
• a rotor shaft that includes
• a cylindrical rotor portion that rotates in the cylinder about a rotational axis offset from a central axis of the inner circumferential surface by a predetermined distance, and
• a shaft portion, wherein a rotational force is transmitted from the electrical drive element to the rotor portion through the shaft portion, and a lower end of the shaft portion is disposed in the oil reservoir,
• a frame that closes one of open ends of the inner circumferential surface of the cylinder, wherein the shaft portion is rotatably supported by a bearing portion of the frame,
• a cylinder head that closes the other open end of the inner circumferential surface of the cylinder, wherein the shaft portion is rotatably supported by a bearing portion of the cylinder head, and
• at least one vane disposed in the rotor portion, the vane having a tip end portion on an outer circumferential side, the tip end portion projecting from the rotor portion, the tip end portion having an outwardly convex arc shape,
• wherein vane angle adjusting unit is provided which holds the vane so as to allow a compressing operation to be performed while constantly maintaining a normal to the arc shape of the tip end portion of the vane to be substantially coincident with a normal to the inner circumferential surface of the cylinder and which supports the vane such that the vane is swingable and movable in a substantially centrifugal direction relative to the rotor portion,
• wherein the vane angle adjusting unit at least includes
• vane aligners that have respective base portions having a ring shape or a partial ring shape, each base portion having one of a projection and a recess, the vane having end portions, each end portion of the vane having the other of the projection and the recess, the vane aligners being connected to the vane each projecting portion being inserted into a corresponding one of the recesses, or the base portions of the vane aligners being integrated with the respective end portions of the vane, and
• vane aligner bearing portions disposed in outer circumferential surfaces of recess portions, the recess portions being formed in cylinder-side end surfaces of the frame and the cylinder head, the recess portions each having a bottomed cylindrical shape, the recess portions each being coaxial with the inner circumferential surface of the cylinder, wherein the base portions of the vane aligners is inserted into the recess portions, outer circumferential surfaces of the base portions of the vane aligners are slidably supported by the vane aligner bearing portions,
• wherein an oil supply channel that is formed in the rotor shaft and allows communication between the oil reservoir and the recess portions of the frame and the cylinder head and oil supply unit that supplies the refrigerating machine oil in the oil reservoir to the oil supply channel are provided.