The screw chiller is named screw chiller because of its key component-the compressor adopts the screw type. The unit consists of a gas refrigerant in the state from the evaporator; after adiabatic compression by the compressor, it becomes a high temperature and high-pressure state. The compressed gas refrigerant is cooled and condensed at equal pressure in the condenser, and then changes into a liquid refrigerant after condensation, and then expands to low pressure through a throttle valve and becomes a gas-liquid mixture. Among them, the liquid refrigerant under low temperature and low pressure absorbs the heat of the substance to be cooled in the evaporator and becomes a gaseous refrigerant again. The gaseous refrigerant re-enters the compressor through the pipeline to start a new cycle. These are the four processes of the refrigeration cycle and the main working principle of the screw chiller.
Features of air-cooled screw chiller
World-famous brand compressor
Original imported twin-screw series compressors. Twin-screw 5:6 gear ratio and advanced linear design, energy-saving, and high efficiency. High-efficiency valve energy control, realizing hierarchical or stepless energy control. Balanced design, super quiet, and stable operation. Strict treatment of moving parts, special design of oil balance block at the exhaust, long maintenance period, trouble-free operation for more than 40,000 hours. High-efficiency oil separator, the exhaust oil output is less than 1.5%, which effectively improves the heat exchange between the two devices, and is more energy-saving and durable.
New high-efficiency evaporator
The latest high-efficiency internally threaded copper pipe in Kobe, Japan, enhances the heat transfer effect and is more energy-efficient and efficient.
Using the latest CAD/CAM design and processing technology, the CNC machining center is completed, compact structure, small size, and durable. The U-shaped structure of the heat exchange tube bundle can be taken out as a whole to clean the internal scale, which is convenient for maintenance. Dry-type evaporator facilitates oil return, improves compressor life and system reliability.
Air-cooled condenser
The radiating fins are punched by a high-speed punch, and the quality of the turning fins is reliable. With the second flanging, the copper tube is in closer contact with the fin, and the heat exchange efficiency is high. The use of fully imported copper pipes and automatic elbow welding greatly enhances the oxygen tightness and prevents refrigerant leakage. It is especially suitable for use in areas where water resources are scarce or water quality is high.
Microprocessing control system
Centralized control of industrial-grade PLC units, combined with the compressor's energy adjustment system, can timely and accurately control the matching of cooling capacity and cooling load of the unit to ensure that the unit runs at the best efficiency and reduce operating costs. The internal integration of multiple safety protection and processing functions such as water cut, low temperature, high and low pressure, antifreeze, lack of phase, delayed start, reverse phase, overload, motor overheating, oil pressure difference, etc. Full Chinese operation interface, menu-type prompts, arbitrarily set the operating status of the unit and the home appliance operating environment.
