The refrigeration function of the high and low temperature circulator is to use a fully enclosed compressor for mechanical refrigeration, which is composed of a plate heat exchanger, an expansion valve, and a pressure protector to meet the cooling requirements. The heating function is to use an electric heating tube to heat the circulating fluid.
The refrigerant or heat medium is transported to the interlayer of the supporting equipment through the built-in circulating pump and the external circulating pipeline, which indirectly cools and heats the materials in the reactor. During external circulation, the upper outlet pipeline is connected to the lower inlet pipeline of the kettle body, and the circulating fluid is returned from the upper circulation port through the pipeline to the lower return port of the product to form a complete circulation space.
The heating and cooling of the high and low temperature cycle integrated machine can be quickly changed. The medium used (high and low temperature silicone oil) is the same medium, and there is no need to change the medium after connection. This improves the disadvantage of the previous heating and cooling requiring two different instruments to complete.
The entire liquid cycle of the high and low temperature cycle device is airtight, with an expansion vessel. The expansion vessel and the liquid cycle are insulated, and do not participate in the liquid cycle, but are only mechanically connected. No matter whether the temperature of the liquid cycle is high or low, the expansion vessel The medium in the medium is below 60°C. It can be achieved that there is no absorption of water vapor at low temperatures, and no oil mist is produced at high temperatures.