Let’s Talk About Vacuum Pumps A vacuum pump is a pumping device that moves air into or out of something else, and it is used for gas molecules removal from an area that leaves a partial vacuum behind. Vacuum pumps are being in producing electric lamps and vacuum tubes, as well as in processing semiconductors in an industrial setting. Vacuum pumps have various classifications, with complex and varying processes. We can narrow down vacuum pumps into two broad categories which are transfer pumps and entrapment or trapping pumps. Transfer pumps or kinetic pumps use momentum in the acceleration of gas from the vacuum side to the exhaust side such as what a turbo molecular pump does. Entrapment pumps are used to trap molecules within a confined space like cryopumps which are used to trap liquified gas molecules into cold traps. Vacuum pumps are widely used in different industrial settings, and are continuously expanding in usage and scope. Vacuum pumps are also classified into mechanical pumps and compressed-air vacuum pumps. Compressed-air pumps work and rely on pressure differentials for creating a vacuum. Rotating vane is a mechanical pump, that has electrical motor as power source, but mechanical pumps can also rely on an internal combustion engine alternatively, drawing air from a closed volume, releasing it to the atmosphere. Vacuum pumps have different types basing on their usage such as rebuilt vacuum pumps, aircraft vacuum pumps, dry, oil and oil-free vacuum pumps, rotary vane vacuum pumps, vacuum and compressor combined pumps, refrigeration and HVAC vacuum pumps and printing system, vacuum pumps. Vacuum pumps have a wide range of uses which include composite plastic molding, semiconductor processing and medical processing. Semiconductor processing include dry etch, ion implantation and PVD or CVD deposition. Some medical applications of vacuum pumps include radiosurgery, radiotherapy and radiopharmacy. Sometime a single application requires more than one vacuum pump, combined in operational procedures and chambers. Partial vacuum can be created using positive displacement pump, transporting gas load from an inlet port to an outlet or exhaust port. Due to its mechanical limitations, these are types of pumps that creates low vacuum. Other techniques are employed to achieve higher vacuum, such as initial fast pump followed with positive displacement pumping. Some examples include oil sealed rotary vane pump, dry scroll pump backing up a turbo molecular pump and a diffusion pump. Vacuum pumps can prolong the life of an engine, that produces a significant amount of air or gas because of its high performance, through adding horsepower. Negative pressure reverses problems as a result of increased pressure in the pan, pushing oil entered in the air passed the rings on the intake’s valve guides and stroke.News For This Month: Pumps