A Brief History Of The Vacuum PumpThe background Of The Vacuum Pump
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Written by: JonathanMorleson
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Date: Tue, 24 Jan 2012 |
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Otto von Guericke, a German scientist, back in the late 17th century first demonstrated the attributes of vacuums. He joined 2 copper hemispheres in an enclosed space and then pumped air out of the housing. A group of 8 race horses couldn't pull the hemispheres apart. By allowing the air into the container the hemispheres could easily be pulled apart. This was the birth of the vacuum pump and as time passed the vacuum pump progressed to greater functional uses for example in manufacturing where these pumps are widely-used to move goods along. In today's technology these pumps are employed to drive power braking systems and cruise control systems in motor cars as an example where they are run off power produced by a vacuum pump.
It was Robert Boyle, an Irish researcher, who later at Oxford University read about Otto von Guericke's air pump and set it upon himself to further improve its structure, an undertaking he was assisted in by Robert Hooke. Hook assisted Boyle in re devising the air pump to be utilized in Boyle's study of the gas laws. Boyle was to become a founding member of the Royal Society and held the name of FRS himself, as did Hooke. Even though Boyle saw himself principally as a chemist, his first published scientific work" New Experiments Physico-Mechanicall, Touching the Spring of the Air and Its Effects (1660) involved the physical nature of air. This took the form of experiments he performed using an air pump to create a vacuum. In the 2nd edition of his work in 1662, he described his famous law that said that the volume of a gas differs inversely with pressure.
There are plenty of applications for a vacuum pump in industry, a few of which are:
o CPM and also Composite Plastic Molding.
o In the production process of electric lamps, CRT's (Cathode Ray Tubes) and the like where the setup is either left empty or re-filled with a specific gas or gas
o The manufacturing of semi-conductors o Milking devices as well as
o Hard coating of components
There are primarily 3 kinds of vacuum pump, namely:
o Positive Displacement pumps, where these pumping systems extend a cavity and permit the gasses to flow out of the sealed chamber, like in electric light manufacturing,
o Molecular pumps where high speed rotating blades are utilized to take out gas molecules from a closed chamber along with
o Entrapment pumps, which catch gases in a solid state or an absorbed state. These pumps are often used in combination of the first two pumps to create extremely high vacuum chambers.
Ahead of the invention of the vacuum pump in the 1650's the Romans implemented a water pump - the suction pump - of which an example was found in Pompeii. In the seventeenth century water pumps had developed to a stage where they generated some measure of vacuum, but such pumps could not pull water beyond a specific height, believed to be +- 10 meters. This definitely placed a limitation on irrigation and other water jobs at the time.
For more information on the vacuum pump or compressors, click the relevant link!
Source: A Brief History Of The Vacuum PumpThe background Of The Vacuum Pump
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