A rotary compressor is provided that may include a rotational shaft, first and second bearings configured to support the rotational shaft in a radial direction, a cylinder disposed between the first and second bearings to form a compression space, a rotor disposed in the compression space and coupled to the rotational shaft to compress a refrigerant as the rotor rotates, and at least one vane slidably inserted into the rotor, the at least one vane coming into contact with an inner peripheral surface of the cylinder to separate the compression space into a plurality of regions. The at least one vane may include a pin that extends in an axial direction, and at least one of the first bearing and the second bearing may include a rail groove into which the pin may be inserted.

A rotary compressor may include a casing, a cylinder, a main bearing, a sub bearing, a rotational shaft, a roller having at least one vane slot and a back pressure chamber, and at least one vane. The roller may include at least one spring insertion groove formed in an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot, and a vane spring that supports a rear surface of the vane toward an inner circumferential surface of the cylinder may be disposed in the at least one spring insertion groove. Accordingly, elastic force may be supplied to the rear surface of the vane, to suppress or prevent trembling of the vane caused while the vane passes through a proximal portion during operation.

A rotary compressor may include a casing, a cylinder, a main bearing, a sub bearing, a rotational shaft, a roller having at least one vane slot and a back pressure chamber, and at least one vane. The roller may include at least one spring insertion groove formed in an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot, and a vane spring that supports a rear surface of the vane toward an inner circumferential surface of the cylinder may be disposed in the at least one spring insertion groove. Accordingly, elastic force may be supplied to the rear surface of the vane, to suppress or prevent trembling of the vane caused while the vane passes through a proximal portion during operation.

A rotary compressor is provided for which a vane slot is formed in each cylinder, a suction port is disposed at one side of the vane slot in a circumferential direction with a partition wall interposed therebetween, and at least one elastic portion is formed in a penetrated or recessed manner at at least one circumferential side surface of the partition wall or between circumferential side surfaces. Accordingly, an elastic strain of the partition wall may increase to reduce friction loss between the vane slot and a vane, a sealing distance may be secured between axial side surfaces of the partition wall to prevent refrigerant leakage between the vane slot and the suction port, an amount of oil or refrigerant stored between the vane and the vane slot may be increased by virtue of the at least one elastic portion formed on an inner surface of the vane slot defining the partition wall, thereby improving lubricity.

A method for manufacturing a sintered component includes a step of making a green compact having a relative density of at least 88% by compression-molding a base powder containing a metal powder into a metallic die, a step of machining a groove part having a groove width of 1.0 mm or less in the green compact by processing groove with a cutting tool, and a step of sintering the green compact in which the groove part is formed after the step of forming the groove part.

A rotary compressor is disclosed. The rotary compressor includes a sidewall path formed in an inner wall of a cylinder facing a vane slot and configured to form a space facing a side surface of a vane, and the vane is provided with a communication part configured to selectively communicate between the outside of the vane slot and the sidewall path according to a position of the vane.

Disclosed is a vane motor including: a casing including a casing including an inlet port and an outlet port, through which a pressurized fluid comes in or out; a rotor being installed in the casing, turning around a rotational shaft by the pressurized fluid and including a rotor body which has a substantially cylindrical shape and an axis coinciding with an axis of the rotational shaft and a plurality of vanes which is installed in grooves formed on an outer circumferential surface of the rotor body and has a portion protruding from the groove and the portion having a length varied in accordance with a rotational phase, and an inner liner of a cylindrical shape which is installed in the casing and receives the rotor therein, in which a distal end of the vane comes into contact with an inner wall surface of the inner liner while the pressurized fluid is retained therein until the pressurized fluid flowing through the inlet port of the casing is discharged from the outlet port of the casing, and an imaginary rotational axis of the inner liner is spaced apart from a rotational axis of the rotational shaft in a parallel state, but is able to rotate together with the rotor when the rotor turns.

According to the present invention, when the rotor turns, the distal ends of the vanes contact against the inner wall surface of the casing, so that the inner wall surface of the casing and the vanes are worn out, to increase a frequency of replacement and repair and since the energy consumed by the abrasion is decreased and is used to generate the rotational force, the energy converting efficiency of the vane motor is improved.

A rotary compressor may include a rotary shaft; a plurality of plates that supports the rotary shaft; a cylinder provided between the plurality of plates to define a compression space, and provided with a vane slot; a roller slidably coupled to the rotary shaft inside of the cylinder, and having a hinge groove on an outer circumferential surface thereof; and a vane, a first end of which is slidably coupled to the vane slot of the cylinder, and a second end of which is rotatably coupled to the hinge groove of the roller. At least one of first and second axial end surfaces of the roller facing the plurality of plates is provided with a dimple portion having a predetermined depth. With this structure, contact surfaces between the roller and the plate may be prevented from being in close contact with each other.

The disclosure discloses a compressor pump body, a compressor and an air conditioner. The compressor pump body includes a sliding vane, a first flange and a second flange. The sliding vane includes a main body. The main body is provided with a first surface and a second surface which are arranged opposite to each other. The first surface abuts against the first flange, and the second surface abuts against the second flange. The first surface and/or the second surface are/is provided with an enlargement portion. An exhaust port is formed in the first flange and/or the second flange. When the sliding vane rotates to sweep the exhaust port, the enlargement portion can prevent two sides of the sliding vane in the rotation direction from communicating by means of the exhaust port.

A rotary compressor may include a rotational shaft; first and second bearings that support the rotational shaft in a radial direction; a cylinder disposed between the first bearing and the second bearing, and forming a compression space; a rotor forming a contact point, disposed in the compression space, and having a predetermined gap with the cylinder, and coupled to the rotational shaft to compress refrigerant according to rotation; and at least one vane slidably inserted into the rotor, and contacting an inner circumferential surface of the cylinder to separate the compression space into a plurality of regions. Each of the at least one vane may include an upper pin that extends upward, and a lower pin that extends downward, a surface of the first bearing may include a first rail groove into which the upper pin may be inserted, and a first step disposed adjacent to the first rail groove, and a surface of the second bearing may include a second rail groove into which the lower pin may be inserted, and a second step disposed adjacent to the second rail groove.