Overview
DHJF-1210 low temperature (thermostatic) stirred reaction bath is an ultra-low temperature refrigeration equipment independently developed by GREATWALL. It adopts the core technology of single-stage compression and partial condensation refrigeration full series combined heat exchanger, which realizes a wide Temperature range of -120 ° C to -60 ° C for a single Compressor, and solves the problems of complex structure, high cost and poor Reliability of traditional three-stage cascade refrigeration system.
Features
With single-stage compression and condensation ultra-low temperature core technology (national patented product), it can meet the ultra-low temperature requirements of -100 ° C to -120 ° C.
2. Refrigeration Compressor and other key components adopt internationally renowned brands (US, Germany, France) to ensure high Reliability and effectiveness.
3. Adopting key input and digital display, it is easy to operate and convenient for real-time monitoring of operating status parameters.
4. The material of the circulation system is 304 stainless steel and polymer anti-corrosion material, which has the characteristics of anti-rust, anti-corrosion and anti-low temperature liquid pollution.
5. The system structure is simpler than the traditional cascade, the welding point is reduced, and the operation Reliability is improved.
6. Design of non-circulatory system below -100 ° C.
Principle
The equipment adopts single-stage compression fractional condensation refrigeration technology. Its core is a self-developed coil-type evaporator with a series heat exchanger of outer coil and coil. The heat exchanger consists of an evaporating outer tube and a multi-stage condensing inner tube in its inner cavity. Through a Compressor driving a multi-stage refrigeration cycle, using the fractional condensation characteristics of mixed refrigerants under different pressures, heat exchange is carried out step by step in the series heat exchanger to achieve ultra-low temperature refrigeration.
Steps
1. Ensure that the device is placed in Permissible Ambient Temperature (5~ 25 ° C) and connected to a 3~ 380V, 50Hz power supply.
2. Set the required temperature (range -120 ° C to -60 ° C) through the key input on the device panel.
3. Start the device and monitor operating status parameters such as temperature through the digital display.
4. Place the reactants in Tank (volume 10L, maximum can be placed 3000ml flask) for stirring reaction.
Notice
• Equipment Ambient Temperature should be strictly controlled between 5 ℃ and 25 ℃.
• The power requirements are 3~ 380V, 50Hz, and the power supply needs to be matched.
• Device weight up to 154kg, handling and placement should pay attention to safety.
• Before use, please confirm that the size of the container to be placed does not exceed the working Tank opening dimensions (φ 210mm).
• Note that the cooling capacity of the equipment at different temperature points (such as -60 ° C, -80 ° C, -100 ° C, -120 ° C) is different, please choose according to the actual load.
Equipment uses mixed refrigerants, and maintenance should be carried out by professionals.
