Rotary vane compressor with a step in the bearing adjacent the rail groove

A rotary compressor, comprising:

• 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, 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, wherein each of the at least one vane comprises an upper pin that extends upward, wherein a bottom of the first bearing comprises a rail groove into which the upper pin is inserted and a step disposed adjacent to the rail groove, wherein the step is recessed from the bottom of the first bearing by a first height, wherein the rail groove defines a space that is at a second height from the bottom of the first bearing, and wherein the first height is smaller than the second height.

A rotary compressor, comprising:

• 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, 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, wherein each of the at least one vane comprises a lower pin that extends downward, wherein a top of the second bearing comprises a rail groove into which the lower pin is inserted and a step disposed adjacent to the rail groove, wherein the step is recessed from the top of the second bearing by a third height, wherein the rail groove defines a space that is at a fourth height from the top of the second bearing, and wherein the third height is smaller than the fourth height.