Low-temperature cooling circulation unitUtilizing fully enclosed refrigeration compressors and PID intelligent program control, featuring low noise and high refrigeration efficiency. All critical refrigeration components are imported for top quality. The refrigeration system is equipped with a high-pressure protector to ensure safety. It primarily provides a stable liquid environment with constant temperature, pressure, and flow, catering to the needs of cooling liquid equipment. Applications include various laboratories and production fields.

Our company producesLow-temperature refrigeration unitThe refrigeration temperature range is from -5℃ to -120℃, offering fast cooling with safety and reliability, suitable for rapid liquid refrigeration and widely used in high-tech industries such as petrochemical, biological, and freeze-drying. The temperature range covers -5℃ to -120℃ to meet various temperature requirements; all units use environmentally friendly refrigerants; equipped with imported brand semi-hermetic piston compressors, semi-hermetic piston twin-stage compressors, and semi-hermetic screw compressors, with major brands including Bock, Bitzer, Copeland, Hanbell, and Fusheng; the evaporator is a plate heat exchanger, featuring compact size and high efficiency; complete with a full set of imported refrigeration controls (pressure controller, equalizer, evaporator valve, electric and magnetic valves, desiccant filter, Emerson oil separator, ALCO sight glass, check valve, etc.); the cooling water circuit of the unit employs an intermediate heat exchanger, significantly enhancing system reliability and safety; utilizes DANFOSS electronic expansion valves for high control accuracy; equipped with Siemens PLC S7-200/300 and LNEYA touch screen display for automated control operations, featuring temperature curve display, temperature recording USB drive, and fault alarm records; high-capacity refrigeration units use semi-hermetic screw compressors with economizers for operation, combined with electronic expansion valves to ensure energy efficiency; the entire unit is factory-installed and tested, requiring only the installation of the refrigerant and cooling water circuits to be operational.

Low-temperature cooling circulation unitProduct Features

1. Utilizes a fully enclosed recirculation system.

2. The refrigeration system compressor, expansion valve, solenoid valve, and other critical components are imported brands to ensure system safety, efficiency, and reduced noise. The system is equipped with air-cooled condensers and water-cooled condensers, suitable for various applications while enhancing refrigeration efficiency.

3. Professional refrigeration control design, rapid cooling, from room temperature to -80℃ in approximately 90 minutes (90 minutes for high-power version; cooling rate for low-power version is 0.8~0.9℃/min), with a constant temperature fluctuation of ±0.1℃.

4. Over-temperature protection and abnormal temperature sensor protection, as well as low and high-pressure protection for the refrigeration system and power failure protection, ensure the safety of the instrument and operation. In the event of power failure or other reasons causing the instrument to shut down, it can automatically resume operation upon power restoration, guaranteeing the continuity of the test.

5. The inner tank, electric heater, and evaporator, etc., which come into contact with the working medium, are made of stainless steel, ensuring durability, longevity, and an elegant appearance.

6. Equipped with a vent and overflow holes for easy medium replacement or internal cleaning of the chamber.

Product Specifications