Difference between revisions of "Pumping Systems"

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The three types of pump systems: positive displacement, momentum transfer, and entrapment.
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Three types of pump systems: '''positive displacement''', '''momentum transfer''', and '''entrapment'''.
  
Positive displacement: Uses a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere. Ex: rotary and screw pumps
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== Positive Displacement Pumps ==
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Positive displacement: Uses a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere.
  
Rotary: [[File:rotarypump.jpg]]
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[[File:Rotary_vane_pump.png| 600px]]
  
Screw: [[File:screwpump.jpg| 500px]]
 
  
 
Momentum transfer: Uses high speed jets of dense fluid or high speed rotating blades to knock gas molecules out of the chamber. Ex: Diffusion and turbo molecular
 
Momentum transfer: Uses high speed jets of dense fluid or high speed rotating blades to knock gas molecules out of the chamber. Ex: Diffusion and turbo molecular
  
Diffusion: [[File:diffusionpump.png]]
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[[File:Cut_through_turbomolecular_pump.jpg|300px]]
  
Turbo molecular: [[File:Cut_through_turbomolecular_pump.jpg|300px]]
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capture gases in a solid or adsorbed state. Ex: Ion and sorption pumps
  
Entrapment: capture gases in a solid or adsorbed state. Ex: Ion and sorption pumps
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[[File:ionpump.jpg]]
 
 
Ion: [[File:ionpump.jpg]]
 

Revision as of 12:23, 7 November 2014

Three types of pump systems: positive displacement, momentum transfer, and entrapment.

Positive Displacement Pumps

Positive displacement: Uses a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere.

Rotary vane pump.png


Momentum transfer: Uses high speed jets of dense fluid or high speed rotating blades to knock gas molecules out of the chamber. Ex: Diffusion and turbo molecular

Cut through turbomolecular pump.jpg

capture gases in a solid or adsorbed state. Ex: Ion and sorption pumps

Ionpump.jpg