Learning 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 used to produce electric lamps and vacuum tubes in an industrial setting, and also in processing semiconductors. 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.
Indeed, vacuum pumps are used in different industries and are continue to expand in scope and usage. 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. Mechanical vacuum pumps have electrical motors as power source, but it can also alternatively rely on an internal combustion engine, drawing air from a closed volume, releasing it to the atmosphere. Here are some types of vacuum pumps: rebuilt vacuum pumps, aircraft vacuum pumps, dry, oils 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 processes include ion implantation, CVD deposition and dry etch. Medical applications of vacuum pumps may include radiopharmacy, radiotherapy and radiosurgery.
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. This is a type of pump which creates low vacuum because of its mechanical limitations. In achieving higher vacuum, other techniques must be employed, typically in series. Examples of these are 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 that are caused by increased pressure in the pan, pushing oil entered in the air passed the rings on the intake’s valve guides and stroke.How I Achieved Maximum Success with Pumps