Turbomolecular pumps are tools that are used in academic experiments, analysis instruments and industrial applications to create high vacuum environments. Even though they are widely used, many people are unaware of how they operate. If you are on the lookout for purchasing a turbomolecular pump for your business, you must know the functioning of the pump from inside out so that you can make the best buying decisions and maintain it well.
Basics of Operation:
The operation of a turbine molecular pump is a marvel of science. While the mechanism may seem very confusing, it’s actually a pretty straightforward process once you break it down. As the name suggests, the key component of every turbo molecular pump is an impeller used to transport air molecules to the exhaust manifold. A turbofan engine works by directing gas into a compressed exhaust manifold. This is achieved by two sets of propellers.. One of the fans is called the rotor, and they continue to rotate at a very high speed, typically up to 80’000 rpm. Then there is a second set of fans that are called the stators. They are fixed in place and do not rotate. Both types of propellers are made at an angle to push the gas down further and propel it out.
Molecular turbine pumps operate by the parallel operation of these elements. Their role is very simple. The blades first pull in nearby gas molecules, and as they spin, they give those air molecules extra momentum. The shape and movement of the blades are designed to give the air molecules momentum to push them out. The second step involves the stators. The stators are close to the rotors so they can catch the circulating gas molecules. The stators are shaped in such a way that they direct the molecules down to the next stage of the rotor. This method is continued iteratively until the final stage, where the air molecules are finally thrown into the exhaust, where a pre-vacuum pump will eventually suck them up.
High-quality turbofan engines can be used to create a variety of pressure levels from medium to extreme one.. They are customizable and can use active sensors to monitor vacuum performance. To save rack space, you can also use an on-board controller mounted on the side of the pump, or as an alternative a pump with integrated control unit as TwisTorr 305-IC.
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How to use a turbo pump?
The best places where a turbo pump is utilized are highly scientific applications such as analytical instrumentation, mass spectrometry, and in electron microscopy. These scientific applications are very sensitive to even the most minute changes, so caution and accuracy is necessary. The first step is to set up a pre vacuum pump that first brings down the vacuum level upto a low or a medium vacuum. It is only from this stage where you can now use the Agilent turbo pump to suck out the remaining air and gas out of the vacuum chamber. This process ultimately leads to the creation of a high or ultra high vacuum, which otherwise would not have been possible. Another thing to keep in mind, is that the turbo pump should be properly calibrated to the exact pressure requirements. As vacuum pumps using turbines don’t use oil or water for lubrication and vacuum creation, they are called dry pumps, and hence zero the risk of contamination of the vacuum chamber. Lastly, before you even operate you should make considerations of the right pump that you want to buy. The main two factors to look out for are the size and cost of the pump. If they meet your specifications for performance, find the turbo pump that is lightweight and compact. It is not enough for the pump to just fall into your budget during buying, but you should also consider the long term maintenance costs of using such a machine.
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With their ease of use, and unique ability to create high vacuums at a cost effective level, these pumps have become a popular option for many scientific and industrial fields. Agilent turbo pumps and controllers are some of the most appreciated and respected products for these buyers and you can find many of their products on the Agilent website.