Main possible faults of scroll compressors

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Abstract

At present, extensive research in the field of scroll compressors is being carried out by many compressor manufacturers for the refrigeration industry. Refrigeration scroll compressors have successfully withstood the test of time and have actively begun to displace other types of compressors. This is due to the fact that scroll compressors are reliable in operation, contain 40% fewer parts than piston compressors, produce less noise and have a longer service life. Scroll compressors are used in all major air conditioning systems including split and multi split models, floor standing versions, roof tops (rooftop air conditioners), heat pumps, compressor and condensing units, supermarket centralized refrigeration systems, industrial refrigeration and transport installations including containers. The range of refrigeration capacity of scroll compressors is constantly expanding, and at present its upper limit is approaching 200 kW (when using a multi-compressor station).
In the above areas of refrigeration technology, scroll compressors actively compete with piston and screw compressors. Obviously, each type of compressors has its own disadvantages and advantages.

About the authors

B. S. Babakin

Moscow State University of Applied Biotechnology

Author for correspondence.
Email: info@eco-vector.com

Dr. of Technical Sciences, Professor

Russian Federation, Moscow

V. A. Vygodin

Moscow State University of Applied Biotechnology

Email: info@eco-vector.com

Dr. of Technical Sciences, Professor

Russian Federation, Moscow

S. A. Pleshanov

Moscow State University of Applied Biotechnology

Email: info@eco-vector.com
Russian Federation, Moscow

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2. Fig. 1. Damage of scroll compressor parts due to hydraulic shock: a - destruction of the moving scroll; b - destruction of the stationary scroll; c - destruction of the Oldheim coupling

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3. Fig. 2. Copper film on the surface of the spirals

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4. Fig. 3. Destroyed thrust bearing of the moving spiral

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5. Fig. 4. Disturbance of the working surface of the shaft journal due to bearing play

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6. Fig. 5. Damage of scroll compressor parts due to poor lubrication: a - worn thrust bearing; b - traces of jamming on the upper crankshaft bearing; c - bearing popping out; d - scoring of moving scroll support bearing.

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7. Fig. 6. Malfunctions in the electrical equipment: a - burned-out motor windings; b - melted electrical connector

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Copyright (c) 2003 Babakin B.S., Vygodin V.A., Pleshanov S.A.

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