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The principle of circulating water cooling machine:
Low temperature and low pressure liquid refrigerant undergoes heat exchange with surrounding water in the evaporator. The evaporator absorbs heat from the water and evaporates into a low temperature and low pressure gas state. During the evaporation process, the refrigerant temperature remains unchanged. The low temperature and low pressure gas state refrigerant enters the compressor, is compressed by the compressor, and is compressed into a high temperature and high pressure gas state. Then, it enters the condenser, where it exchanges heat with the indoor medium, Part of the heat in the high-temperature and high-pressure gaseous state is absorbed by the medium, and as the medium temperature rises, the refrigerant releases heat and the condenser becomes a high-temperature and high-pressure liquid. The temperature of the condenser process remains unchanged, and then enters the expansion valve for throttling. Throttling is a rapid cooling process, and the refrigerant becomes a low-temperature and low-pressure liquid. After this process, the refrigerant enters the evaporator for heat exchange and evaporation, thus realizing the entire process of the refrigeration system. This cycle is continuous, Water is able to continuously cool.
The main characteristics of the circulating water cooling machine are:
1. The circulating water cooling machine adopts an American drum scroll compressor, which is high-performance, silent, energy-saving, and durable;
2. Expansion valves, filters, high and low pressure gauges, solenoid valves and other refrigeration components are all made of internationally renowned brands such as France, Taiwan, and Japan, with high precision, low failure rate, and long service life.
3. The water pump adopts well-known domestic and foreign brand stainless steel water pumps, which have the characteristics of low noise, high head, large flow rate, long service life, and small volume
4. Using a Japanese electronic temperature controller, it can control the water temperature within -20 ℃ to 45 ℃.
5. All controls are located on the front of the chiller. Simply press the switch to adjust to the desired temperature, and the operation will be automatic, simple and fast.
6. The circulating water cooling machine is equipped with safety protection devices such as compressor overload protection, pump overload protection, high and low pressure abnormal protection, water level lack protection, antifreeze protection, and electronic time delay. The warning system of abnormal alarm buzzer and fault indicator light can automatically cut off the circuit, making it safe and reliable.
Common faults and troubleshooting methods for circulating water cooling machines:
1. Leakage of refrigerant: Leakage of refrigerant can directly cause the chiller to fail to cool, requiring leak detection and repair.
2. Low pressure: Most cases are caused by refrigerant leakage from the chiller and require leak detection and repair.
3. High pressure: If it is an air-cooled chiller, it is necessary to check the ventilation status of the space where the chiller is placed. If the space is small and the ventilation is not good, it is easy to cause a high pressure alarm. In addition, if the compressor discharge pressure is too high, it can also be caused. It is necessary to release pressure and open the pressure relief valve to release some air. A water cooler requires exhaust, and a simple way to prevent high-pressure alarms is to add refrigerant such as R15 to the chiller.
4. The compressor of the circulating water cooling machine is not working: first, check whether the water pump of the chiller is good or bad. If the water pump is good, check whether the water tank of the chiller can be filled with water, and then check the current.
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