INTERNAL GEAR COMPRESSOR

摘要

A compressor comprises: a hermetic container (10) in which oil is contained; a driving motor (20) mounted in the hermetic container (10); a cylinder (30) mounted in the hermetic container (10); an outer gear (40) inserted into the cylinder (30) and having gear teeth (41) at an inner circumferential surface thereof; an inner gear (50) having gear teeth (51) at an outer circumferential surface thereof, rotatably inserted into the outer gear (40), and forming a plurality of compression spaces with the outer gear teeth (41); an upper bearing (60) and a lower bearing (70) respectively coupled to both lateral surfaces of the cylinder (30), for closing the compression spaces; a rotational shaft (80) for transmitting a rotational force of the driving motor (20) to the inner gear (50); and an oil supplying means for circulation-supplying the oil between the cylinder (30) and the outer gear (40) as the rotational shaft (80) is rotated. In the compressor, compressed gas is discharged many times as a driving motor (20) is rotated one time and thereby two gears (40, 50) are rotated with being engaged to each other, and an abrasion of two gears (40, 50) and components that perform a relative motion with the gears is minimized.