스크롤 컴프레서 팁실의 마찰특성
Friction Characteristics of the Tip Seal in a Scroll Compressor
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초록
The basic elements in a rotary-type scroll compressor are two identical spiral scrolls containing refrigerant gas. The pressure variations in the compression pockets of a scroll compressor change the forces acting on the orbiting scroll, and these forces affect the dynamic behavior of the compression mechanism parts. To achieve high efficiency, using a self-sealing mechanism as a tip seal mechanism is very effective. Tip seals, which are placed on top of the scroll wraps, accomplish thrust sealing. This study calculates the friction force between the tip seal and the side plate of a scroll compressor using the numerical model considered in the Reynolds equation. The calculated friction force is verified by an experiment using a pin-on-disk apparatus. A hydraulic servo valve that controls the pressure of the oil hydraulic cylinder applies the normal load for the test, and a DC servo motor controls the sliding velocity of the disk. The friction force and normal load are measured by the force sensors attached to the supporting parts. The results show that the theoretical and experimental results are similar and that the friction is influenced by the viscosity of the oil and the sliding velocity of the scroll.
Abstract
The basic elements in a rotary-type scroll compressor are two identical spiral scrolls containing refrigerant gas. The pressure variations in the compression pockets of a scroll compressor change the forces acting on the orbiting scroll, and these forces affect the dynamic behavior of the compression mechanism parts. To achieve high efficiency, using a self-sealing mechanism as a tip seal mechanism is very effective. Tip seals, which are placed on top of the scroll wraps, accomplish thrust sealing. This study calculates the friction force between the tip seal and the side plate of a scroll compressor using the numerical model considered in the Reynolds equation. The calculated friction force is verified by an experiment using a pin-on-disk apparatus. A hydraulic servo valve that controls the pressure of the oil hydraulic cylinder applies the normal load for the test, and a DC servo motor controls the sliding velocity of the disk. The friction force and normal load are measured by the force sensors attached to the supporting parts. The results show that the theoretical and experimental results are similar and that the friction is influenced by the viscosity of the oil and the sliding velocity of the scroll.
참고문헌 (12)
- Tojo, K, "A Scroll Compressor for Air Conditioners", Proc. Int. Compress. Eng. Conference, pp.496~503 (1984)
- Tojo, K, "Computer Modeling of Scroll Compressor with Self Adjusting Back-Pressure Mechanism", Proc. Int. Compress. Eng. Conference, pp.872~886 (1986)
- Nieter, J. J, "Dynamics of Compliance Mechanisms in Scroll Compressors, Part I: Axial Compliance", Proc. Int. Compress. Eng. Conference, pp.308~316 (1990)
- Nieter, J. J, "Dynamics of Compliance Mechanisms in Scroll Compressors, Part II: Radial Compliance", Proc. Int. Compress. Eng. Conference, pp.317~326 (1990)
- Shu, H. T, "Dynamics of an Orbiting Scroll with Axial Compliance, Part 1-Simulation of Orbiter Axial Motion", Proc. Int. Compress. Eng. Conference, pp.861~870 (1992)
- Park, S. S, "Analyses and Measurements of Rotational Accuracy for Journal Shaft in a Scroll Compressor", J. Korean Soc. Tribol. Lubr. Eng, 23(3), pp.83~88 (2007)
- Inaba, T, "A Scroll Compressor with Sealing Means and Low Pressure Side Shell", Proc. Int. Compress. Eng. Conference, pp.887~900 (1986)
- Bush, J. W, "Dimensional Optimization of Scroll Compressors", Proc. Int. Compress. Eng. Conference, pp.840~855 (1986)
- Liu, Y. G, "Design Optimization of Scroll Compressor Applied for Frictional Losses Evaluation", Int. J. of Refrigeration, 33(3), pp.615~624 (2010)
- Suefuji, K, "Deformation Analysis of Scroll Members in Hermetic Scroll Compressor for Air Conditioners", Proc. Int. Compress. Eng. Conference, pp.583~590 (1988)
- 오세두, "자연냉매 CO₂ 환경에서 스크롤 압축기 구동부의 마찰 마멸특성 평가", 한국윤활학회지, 19(3), pp.146~150 (2003), 한국윤활학회
- Kim, T. J, "Numerical Study on the Dynamic Behaviour of a Crank Shaft Used in Scroll Compressor", Trans. Korean Soc. Mech. Eng, 17(8), pp.1940~1950 (1993)