Definition Of Diffusion Pump

Definition of diffusion pump with photos and pictures translations sample usage and additional links for more information.

Definition of diffusion pump. This pump is made from readily available materials and has been shown to achieve a 022 torr vacuum. When the pump fluid in the boiler is heated it generates a boiler pressure of a few torr within the jet assembly. The diffusion pump uses the vapor of a boiling fluid to capture air molecules. Definition of diffusion pump.

Diffusion pumps use a high speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the exhaust. The diffusion pump is known as a fluid entrainment pump and works in a completely different manner. The fluid is then moved to another location and cooled. Presented in 1915 by wolfgang gaede and using mercury vapor they were the first type of high vacuum pumps operating in the regime of free molecular flow where the movement of the gas molecules can be better understood as diffusion than by conventional fluid dynamics.

The diffusion pump is initially evacuated by an oil sealed rotary pump to a pressure of about 0 1 torr or less. Invented in 1915 by wolfgang gaede he named it a diffusion pump since his design was based on the finding that gas cannot diffuse against the vapor. They were the first type of high vacuum pumps operating in the regime of free molecular flow where the movement of the gas molecules can be better understood as diffusion than by conventional fluid dynamics. A vacuum pump for producing extremely high vacuums by diffusing gas into a jet of vapor of mercury or some heavy oil by which the gas is carried off and which is separated from the gas by condensation.

Please look up the definition of a diffusion vacuum pump before continuing. Use extreme caution when working with vacuum this pump needs a ro. Diffusion pumps remain workhorses boc edwards has added to its range of high throughput industrial diffusion pumps with the launch of its biggest model yet. The cooling forces the air molecules to be released.