Water cooled screw freezer (dual head - liquid outlet at minus 30 degrees Celsius)

1、 Characteristics of Oklon Low Temperature Chiller Unit
1. Compact structure and smooth operation:
The condenser and dry evaporator of the unit are both equipped with high-efficiency heat transfer tubes, and the main engine uses imported high-efficiency semi enclosed twin-screw compressors, which have many advantages such as compact structure, small volume, light weight, and small installation position. The semi enclosed twin-screw compressor has fewer moving parts and uses a 5:6 ultra efficient screw rotor. There is no direct wear between the rotors, making it highly reliable. Due to the fact that the screw machine is a continuous compressor without pulsation, the unit has the characteristics of stable performance, low noise, small vibration, and smooth operation. Improved efficiency by 20% -30% compared to reciprocating compressors, and has obtained international quality certification and patents from multiple European and American countries;
2. A comprehensive energy control system:
The unit has a four level capacity control system, which automatically adjusts the start and stop of the unit according to load changes, making it more energy-efficient. During operation, the computer control system will adjust the energy output of the unit based on changes in the client's thermal load. The microcomputer quickly determines and sends a signal to push the slide valve to the required energy by monitoring the difference between the actual load measured and the user's setting. And in multiple systems, working in an optimized way that minimizes energy consumption with the best cooling output not only demonstrates excellent performance at full load, but also has high operating efficiency even at partial load;
3. Independent refrigeration cycle system:
Large capacity units have two or more independent refrigeration circuits, so that even if one circuit fails/needs maintenance, the other circuit can still operate normally. Equipped with backup function, especially suitable for industrial non-stop environments
4. Easy and intuitive operation:
The unit adopts a microcomputer programmable logic controller (PLC display in Chinese or English), with a touch screen display. Select the operation according to the menu on the screen, and directly touch the display button on the screen with your finger to start the unit. The screen can display the operating status of the unit at any time, and can display parameters in two ways: graphics and text tables, making it clear at a glance;
5. Protection function of microcomputer controller:
It has protection functions such as compressor coil temperature high protection, oil preheating timed power on/off, cold water flow switch, cold water outlet temperature low protection, Y - △ start failure protection, exhaust temperature high protection, compressor overload protection, power-off memory function, frequent start stop protection, voltage abnormality protection, low oil level protection, high and low voltage protection, etc;
6. Multiple protections, safe and reliable:
In addition to the internal protection module of the compressor providing functions such as overvoltage, undervoltage, phase loss, and overload protection, the pressure control device of the refrigeration system can ensure that the unit works perfectly;
7. Freezing medium:
The unit uses ethylene glycol antifreeze, or can be designed with salt water as antifreeze according to user requirements.
8. Easy to install:
The unit has completed all component installation, operation testing, and refrigerant and refrigeration oil filling in the factory. Users only need to connect the water and circuit to put it into use, reducing installation and commissioning time.
2、 Application of Low Temperature Chiller Unit
The unit can provide medium and low temperature process chilled water with an outlet temperature of -5 ℃ to -35 ℃. The unit can use ethylene glycol aqueous solution as a refrigerant or perform anti-corrosion treatment on the evaporator. Calcium chloride and sodium chloride aqueous solutions can be used as refrigerants, which are widely used in the fields of medicine, chemical industry, petroleum, food, low-temperature freezing, cold storage, etc.
The unit adopts an imported semi enclosed economical low-temperature screw compressor as the main engine, which has the characteristics of few moving parts, stability, high efficiency, and low failure rate; The main components are internationally renowned brand components such as Danfoss from the United States, ALCO from the United States, Emerson from the United States, and Carly from France, using advanced PLC control systems; Characterized by high efficiency, energy saving, and stability;
Cooling capacity range: 55KW-2000KW.
3、 Low temperature chiller series
The water-cooled screw type low-temperature chiller is a product developed and researched by our company for industrial use. Its cooling capacity ranges from 60KW to 1200KW. This series of units combines the characteristics of many other products, using imported original semi enclosed screw compressors, supplemented by high-efficiency heat exchangers, and adopting microcomputer controllers, making the unit compact in appearance, reasonable in layout, and easy to use and maintain. Users only need to connect the pipeline of the water system and the required power supply to put it into operation. This series of low-temperature chillers has a wide range of applications: it can provide process chilled water for industrial and mining enterprises such as textiles, chemicals, and petroleum. The manufacturing process technology of this product is mature and the operation is stable and reliable.
The unit uses ethylene glycol or salt water as the cooling medium and provides chilled water for industrial equipment through certain methods. The product standard is based on the "Steam Compression Cold Water (Heat Pump) Units for Industrial, Commercial, and Similar Use", with special attention paid to improving partial load performance and the application of energy automatic regulation devices in the design to save operating costs.