ROTARY COMPRESSOR

• Main Authors: LEE JINGYU, NA SANGMIN
• Format: Patent
• Language: English; Korean
• Published: 14.12.2021
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

The present invention relates to a rotary compressor which comprises: a roller which is slidably coupled to an eccentric unit of a rotary shaft and moves along the inner circumferential surface of a cylinder by the rotary shaft; and a vane slidably coupled to the cylinder to separate a compression space into a plurality of compression chambers. An oil supply groove is formed on the outer peripheral surface of an eccentric unit of the rotary shaft or the inner peripheral surface of the roller facing the outer peripheral surface of the eccentric unit. A depth of the oil supply groove is formed to become shallower as a distance from an oil supply hole in the circumferential direction. Accordingly, an amount of an oil supplied between the eccentric unit and the roller increases, so that friction loss can be reduced. 본 발명에 따른 로터리 압축기는, 회전축의 편심부에 미끄러지게 결합되어 상기 회전축에 의해 실린더의 내주면을 따라 이동하는 롤러; 및 상기 실린더에 미끄러지게 결합되어 상기 압축공간을 복수 개의 압축실로 분리하는 베인;을 포함하고, 상기 회전축의 편심부의 외주면 또는 상기 편심부의 외주면을 마주보는 상기 롤러의 내주면에는 급유홈이 형성되며, 상기 급유홈의 깊이는 급유구멍에서 원주방향으로 멀어질수록 얕아지게 형성될 수 있다. 이에 따라, 편심부와 롤러 사이에 급유량을 늘려 마찰손실을 줄일 수 있다.