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Question:

How to deal with the liquid hammer phenomenon of compressor

How to deal with the liquid hammer phenomenon of compressor

Answer:

The gas is compressible, and the liquid is incompressible. When the refrigeration system has liquid refrigerant into the compressor cylinder, impact compressor valve, causing the valve parts and other parts of the damage, the most serious consequences may cause compressor compression parts permanent damage
If the compressor has occurred abnormal impact (knock or impact) sound, and will strongly shake vibration, indicating that the liquid is in the attack. Slight short term abnormal shocks may be of little concern, but often prolonged and heavy fluid shocks cause compressor deformation, rupture, and even breakage, which directly damages the compressor
The cause of liquid hammer is refrigerant or excessive lubrication, the liquid is too fast, the expansion valve (or valve) the regulation degree (opening) is too large, the heat load of evaporator (heat transfer) is not stable, large open type compressor suction valve open too fast (or unloading capacity too fast). System design and installation is unreasonable, abnormal shock may have caused the compressor
Liquid hammer occurs mainly in piston compressors. As refrigerant liquid (or lubricating oil) is sucked in by compressor, it causes abnormal shock accident of compressor

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