Analysis of the Causes of Liquid Hammer in the Refrigeration Compressor of Chiller Heart

Shenzhen Dongyuejin Chiller Factory | screw chiller | air-cooled chiller | low-temperature chiller | open chiller- Shenzhen Dongyuejin refrigeration liquid compressor on the cause of the impact of the analysis: When the chiller in the process of operation, a small amount When the liquid refrigerant enters the compressor cylinder, the liquid refrigerant evaporates and absorbs heat in the cylinder, which causes frost on the outside of the cylinder and the suction tube. A large amount of liquid refrigerant is sucked into the compressor and a liquid hammer phenomenon occurs.

Compressor is the core component of the whole chiller. It sucks the low-temperature and low-pressure refrigerant gas from the suction pipe, compresses the piston through the operation of the motor, and then discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to form a refrigeration cycle. The power is supplied so that a refrigeration cycle of compression→condensation (exothermic)→expansion→evaporation (endothermic) is achieved. When it produces a liquid strike, it is often caused by the following reasons:
1. The refrigerant of the entire chiller refrigeration system is overfilled, or the throttle valve is opened too large, or the throttle valve is opened too large, or the adjustment fails.
2. The unit evaporation area is too small and does not match the compressor's cooling capacity.
3. When the cooling area of ​​the evaporator is reduced and the surface of the evaporator is severely covered with frost, the amount of heat transfer is reduced and the wet compression is easily generated.
4. When the chiller is just starting to operate, the evaporating temperature is high at the beginning, and the suction valve of the compressor is opened too quickly, causing sudden inhalation.
5, freon compressor oil temperature is too low, the working fluid will be dissolved in the lubricating oil too much, when the compressor inhales, the suction pressure suddenly drops. At this point, the working fluid dissolved in the oil will suddenly evaporate, causing the oil to foam, and the oil will be drawn into the compressor along with the working fluid to cause a liquid strike.

Whether it is a screw-type chiller, an air-cooled chiller, a low-temperature chiller, or an open-type chiller, if it is found that the intake and exhaust temperatures drop rapidly, the suction chamber of the unit is frosted and the sound of the valve rises and falls is abnormal. When there is a slight knock on the cylinder sound, etc., it should be adjusted in time.

This article from the Shenzhen Yuejin Refrigeration starting, reproduced please note the original URL: http://