1. Foreword
Compressor is the sophisticated machine that high speed runs, assure the motion such as compressor crankshaft, bearing, connecting rod, piston lubricating adequately is the main demand that keeps a machine to run normally. For this, compressor manufacturer asks to use appoint brand lube, ask to check lube oil level and color regularly. However, as a result of refrigeration system design, construction and the neglect that safeguard a respect, compressor is short of agent of the metamorphism of oily, oily cooking, dilute that answer fluid, refrigeration to erode, use inferior lube to wait create campaign the circumstance of lubricant inadequacy is commonner. Lubricant inadequacy can cause bearing face to wear away or cut, serious when can cause hold card of axis, piston in the arms to be inside air cylinder and from this and the connecting rod that cause bends, rupture accident.
2. Be short of oil
Be short of oil is one of compressor breakdown that discern very easily, oily quantity does not have lube even rarely in the crankcase when compressor is short of oil.
Compressor is a special pump, gas of many refrigeration agent is in by eduction while also place take away one fraction lube (call go straight towards oil or run oily) . Compressor goes straight towards oil cannot avoid, just go straight towards oily speed to differ somewhat. In sealing piston compressor exhaust, half have the lubricating oil of 2-3 ％ about, and vortex compressor is 0.5-1% . To a platoon the quantity is quantity of oil storage of 100m3/hr, crankcase to be 6 crocks of 6 litres compressor, of 3 ％ go straight towards oil to mean about 0.3-0.8 rises ／ minute quantity going straight towards oil, or compressor is ten minutes without time of the movement that answer oil.
The lube of eduction compressor do not come back, compressor can be short of oil. Compressor answers oil to have two kinds of kind, one kind is oily segregator answers oil, another kind is to answer tracheal answer oil. Oily segregator installation is on compressor exhaust pipeline, can depart commonly those who give 50-95 ％ go straight towards oil, the effect that answer oil is good, rate is rapid, reduce the oily amount that enters systematic pipeline greatly, lengthened effectively thereby without time of the movement that answer oil. Type of the refrigeratory refrigeration system with particularly senior pipeline, full fluid makes the freeze-dry device with glacial system and very small temperature wait, after switching on the mobile phone a few minutes do not answer oil or ten minutes answer oily quantity even very little case is not strange, the system with bad design can appear compressor oil pressure is too low and stop the problem of machine. System of this kind of refrigeration installs efficient oily separator to be able to lengthen compressor not to have time of the movement that answer oil greatly, make compressor safety spends the crisis phase that an oil does not have after switching on the mobile phone.
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