Nanguang vacuum

A method of vacuum

People usually put to vent air from the airtight container or makes a container of the dwindling number of gas molecule called vacuum equipment for equipment or vacuum pump. At present in the vacuum technology, using different methods, have been able to get and measuring atmospheric pressure from 105 Pa to 10-13 Pa, the wide reach 18 orders of magnitude pressure range. Obviously, only use a vacuum pump, obtain such wide space, low pressure gas is very difficult for a state.

In the vacuum, the current get technology is used to obtain the vacuum technology method has two kinds, one kind is the movement of the institutions through a gas directly from the airtight container ranked out; Another is by physical and chemical methods such as gas molecules adsorption cooling in the low temperature or on the surface. Use of the two methods of manufacturing all kinds of vacuum pump sort is more, classification method is different, but the most commonly used method according to the work principle of or pump or the structure characteristics are classified.