Exclusion method After disassembling the compressor, it is found that the exhaust valve seat is stuck on the body above the cylinder liner and the distance from the cylinder liner is 5mm. Two suction valve springs are dropped in the lower part of the cylinder sleeve hole, and the organic oil in the partition tank The inside of the body overflows. Then replace the suction valve piece and the spring and the refrigerating oil. According to the correct assembly procedure, the test machine runs normally and the fault is eliminated.
The reason is that the refrigeration compressor has had a wet stroke, which causes the amount of steam to be uneven, which affects the oil pumping capacity; the spring pressure on the suction valve is different; in addition, after the refrigeration compressor is used for a long time, the limiter and valve are raised. Wear of parts such as seats can also cause changes in the opening of the valve. Due to the cause, the exhaust valve seat is stuck on the body, causing other faults: the energy regulating valve is out of order, the two pistons are idling; the high pressure chamber and the low pressure chamber are mutually argon, causing the temperature of the body to rise again and again, correspondingly accelerating the cylinder The lubricating oil evaporates, causing the crankcase oil to drain too much into the system.
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