Chillers are divided into air cooled chiller and water-cooled chillers in the industry. Chillers are divided into low temperature chillers and normal temperature chillers in temperature control, and the normal temperature is generally controlled within the range of 0 -35 degrees. Generally speaking, the temperature of the cryocooler is controlled within the range of 0- 100 degrees.
principle of operation
The refrigerant absorbs the heat of the cooled object in the evaporator and vaporizes it into steam. The compressor continuously draws the generated steam from the evaporator and compresses it. After the compressed high-temperature and high-pressure steam is sent to the condenser, it releases heat to the cooling medium (such as water and air). ) and condensed into high-pressure liquid. After the pressure is reduced by the throttle mechanism, it enters the evaporator and evaporates again to absorb the heat of the cooled object, and so on. When heating, the refrigerant changes its flow direction through the four-way valve, which is just the opposite of when cooling. The refrigerant first passes through the evaporator, then returns to the condenser and finally returns to the compressor.
use
Coolers can be used in many fields, and the main application fields are:
Refrigerator can be used for supporting vacuum equipment. This kind of water chiller also meets the requirements of high-quality vacuum equipment, such as molecular pump and small vacuum coating machine.
Refrigerators are used to support medical laser equipment. The unique water treatment characteristics of this chiller make it an ideal choice for supporting medical laser equipment. This series of chillers are also widely used in atomic absorption spectrometer, fermentation equipment, reaction kettle, electrophoresis instrument and so on.
Attention must be paid to: firstly, liquid medium should be added to the tank before use; Secondly, the working power supply should be determined according to the model of the machine; The power supply should be greater than or equal to the total power of the instrument; The power supply must be well grounded; Third, the water cooler should be placed in a dry and ventilated place, 400mm away from obstacles. Finally, after using the water dispenser, all switches should be turned off, the power plug should be connected, and the liquid in the tank should be sucked dry with a ball suction tube.
3. The chiller can be used together with the supporting experimental condensing equipment. Such as rotary evaporator, distiller, condensing tube, etc., have the characteristics of controllable temperature, stable temperature and high condensing efficiency, which can effectively improve the recovery rate. At the same time, its fluid purification function can avoid the blockage of circulating pipeline and the breeding of microorganisms.
4. Chillers are used to support semiconductor laser equipment. Because of its special structure, semiconductor laser equipment requires higher water quality.