Let us look at the various types of industrial vacuum pumps, based on their functioning, and their applications.
As the name goes, these pumps use momentum or kinetic energy to displace the liquid or gaseous molecules from a confined chamber. Thus, creating a vacuum. Momentum Transfer Pumps generally work along with Positive displacement pumps to create high volume vacuums. They may further be classified as Diffusion Pumps and Turbomolecular pumps. While diffusion pumps create the momentum by shooting jets of oil along with the gaseous molecules, Turbomolecular pumps create the same momentum using high-speed fans.
The most effective and often used to create ultra-high-volume vacuums, Entrapment Pumps, apply various chemical reactions to achieve superior vacuums. Also known as capture pumps, these pumps use either supercooling methods or electrical fields to stimulate condensation and turn the gaseous molecules to a solid or absorbed state. Working in conjunction with Positive Displacement and Momentum Transfer Pumps, Entrapment Pumps are super-efficient vacuum creators.
A Regenerative Vacuum Pump generates a vacuum by spinning, oil-free impellers causing centrifugal action to accelerate air as it passes through its impeller blades. It works as a multi-staged compressor, with each blade-to-blade regeneration of gaseous molecules resulting in a slight pressure increase. Thus, creating a vacuum. These pumps work based on the Non-positive Displacement Method and are perfect for moving large volumes of air at low pressures or vacuums.