The vortex tube is an energy separation device with a simple structure. The refrigeration effect of the vortex tube was discovered by the Frenchman Rauque in 1933 [1]. It consists of a tube open at both ends, a nozzle, an orifice plate and a regulating valve. When the high-pressure airflow accelerates into the vortex tube, the airflow It enters the vortex tube along the tangential direction through the nozzle and rotates along the inner wall of the vortex tube. While the air flow rotates along the inner wall, it tends to the valve side. Part of the air flow is discharged through the regulating valve, and its temperature is higher than the inlet air flow temperature; the rest of the air flow is forced to flow back through the orifice. Leaving the other end of the vortex tube, its temperature is lower than the temperature of the inlet airflow.

   The air knife rotates along the inner wall of the vortex tube, and the angular speed of the air knife can reach several million revolutions per minute [1]. The vortex tube has a series of advantages such as simple structure, convenient operation, safe and reliable operation, and low cost. It also has many functions such as refrigeration, heating, vacuuming, and vapor-liquid separation. Therefore, it has broad application in many departments of scientific research and industry. practical application prospects. However, the current refrigeration efficiency of vortex tubes is low, and its promotion and application has been restricted.

   The "targetedness" listed in the chassis cooler table is for the cooling of heating components in electronic, electrical, and instrument control panel cabinets. It means that eddy current coolers have specifically targeted and selective cooling, while for other If there is no heating element, cooling is not an option. Shielding means that the combination of the eddy current refrigerator and the electronic, electrical, and instrument control panel cabinets can separate the environment inside the cabinet from the environment outside the cabinet, and form a positive pressure of dry and cold gas environment in the cabinet, shielding the external environment in the easy-to-use cabinet. outside the heating element.