Oil Diffusion Pump Animation

The diffusion pump is used for obtaining different levels of vacuum with pressures up to 10e 9pascals this device has very fast pumping speeds and can also be used for pumping corrosive gasses.

Oil diffusion pump animation. At the bottom you can see the heaters that sit just below the oil. These nozzles are in a ring and form a curtain or skirt of vapor that extends from the nozzles to the pump wall. Note that the oil is gaseous when entering the nozzles. Often several jets are used in series to enhance the pumping action.

Diffusion pump working diagram. Diffusion pump is an oil based vacuum pump that is used for obtaining different levels of vacuum even high vacuum of 10 powered 9 pascal. The high speed jet is generated by boiling the fluid and directing the vapor through a jet assembly. The heat diffusion fins are made of copper and are only partially immersed in the pump fluidin the vaporization chamber.

The very bottom of the chamber is a heater where silicone based diffusion pump oil is heated until it reaches gaseous state usually between 180 270 c. The section of the heat diffusion fins immersed in the pump fluid is dimensioned so that that intense but surge free vaporization of the pump fluidis achieved. Purchase diffusion pump fluid online. Here in my country side there are a lot of silicone base oil to which i can use as a low vapor pressure oil but think is i really dont know which staff has to use in this purpose.

When the oil view diffusion pump oil selection online becomes hot enough to vaporize the oil vapors rise up the center of the pump and exit the nozzles at a downward angle. The sections of the heat dissipation fins located above. Diffusion pump oil is not available in my country and also i can t bear the expense in importing of dp oil. The principle is relatively simple the vaporized oil agents traps the gas molecules in the chamber as oil condensates on the cold surface the gas gets free and is removed from the chamber with the pre vacuum pump.

The excited gas travels upward and exits through the pressure jets that are pointed at an downward angle.