Application principle: There is a certain amount of residual gas in the high-vacuum environment where the oil diffusion pump is used. More than 80% of the residual gas is water vapor, oil vapor and other high-boiling vapors. But all the residual gas is also the source of the workpiece, which will affect the quantity and quality of the product. Cryogenic pump is a good choice to solve such problems.
The working principle of cryogenic pump: place a cooling coil that can be below -120 ℃ in a vacuum chamber or oil diffusion pump port to capture rapaidly the residual gas vacuum system through the surface of the low-temperature condensation effect. So that it reduce evacuation time (60-90% reduction in evacuation time) and geta clean vacuum environment (up to a half-order vacuum, 10-8 Torr, 10-5 Pa).
The main performance characteristics
1, It can absorb vapor of water and oil quickly, so that it can reduce evacuation time 60-90%;
2, It can improve coating quality and making coating not fall off and pure color;
3,Cooling rapidly. It can cool to -120 ℃ or even -150 ℃ within 1 minute;
4,hot gas can defrost within 30 seconds,then return to warm and cooling within 2 minutes;
5, There is touch screen and PLC which makes a perfect automation control;
6, Dual-way load can be designed;
7,mixed of imported compressors and green environment mixed refrigerant;
8, with two load inlet and outlet temperature display and device temperature display;
9, defrost temperature can be freely set;
10, with water temperature and exhaust temperature display;
11, With water shortage and high temperature alarm;
12, Self protection when compressor exhaust and pressures is too high;
13, It can be free conversion between local and remote control;
14, With RS485 computer data interface, the computer can read temperature data and its control.