Compressor
AssigneeLG Electronics Inc.
InventorsSeokhwan MOON, Yunhi LEE, Byeongchul LEE
Life of this patent
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Abstract
Disclosed is a compressor. A lubrication surface, which has the same curvature as an inner circumferential surface curvature of a cylinder and which has a predetermined circumference length, is formed on an outer circumferential surface of a roller contacting an inner circumferential surface of the cylinder. With such a configuration, since the outer circumferential surface of the roller contacting the inner circumferential surface of the cylinder come in surface-contact with each other, an oil film is formed between the roller and the cylinder with a wide area. This can reduce a frictional loss.
Claims15
A compressor, comprising:
- a driving motor;
- a rotational shaft configured to transmit a rotational force of the driving motor;
- a cylinder installed at one side of the driving motor;
- a roller having an outer circumferential surface contacting an inner circumferential surface of the cylinder, rotated by being provided at the rotational shaft, and concentric with the cylinder;
- and
- at least two vanes movably provided at the cylinder, contacting an outer circumferential surface of the roller, and configured to divide at least two compression spaces formed by the cylinder and the roller into a suction chamber and a compression chamber,
- wherein the roller is provided with a lubrication surface on its outer circumferential surface contacting in surface-contact with the inner circumferential surface of the cylinder, the lubrication surface having the same radius from a rotation center of the roller and having a predetermined circumference length in a circumferential direction.
Dependencies are inferred from the claim text.