Molecular vacuum pump advantages and disadvantages

With the advent of the oil diffusion pump era, much has been done to improve the molecular pump. Such as Holweck, Siehbahn, Gondet, etc. has made many improvements to the molecular vacuum pump, but also made a lot of different new molecular vacuum pump. With the foundation of predecessors, molecular vacuum pump has made great development, but to understand the advantages and disadvantages of molecular vacuum pump is still a persistent issue. Molecular vacuum pump Molecular vacuum pump Advantages: 1, clean, oil-free steam reflux: turbomolecular vacuum pump without any trap, according to the rules of operation, will be able to be pumping containers to provide a very clean vacuum environment, and does not contain any hydrocarbons . 2, easy to use: In many applications, turbomolecular vacuum pump can be high vacuum valve or rough vacuum valve. Just press the button, the pump will be able to start working. 3, gas delivery ability: Most turbomolecular vacuum pump for conveying light gas (such as hydrogen, helium) ability. During these processes, the evacuated gas can have a corrosive effect on cryogenic pumps, ion pumps, diffusion pump fluids, and the like. 4, suitable for ultra-high vacuum applications: a sealed and degassing turbo molecular vacuum pump, coupled with good performance of double-stage rotary vane pump, these properties coupled with its good cleanliness, it is clear that the user will choose turbocharger Pump for high-resolution mass spectrometer, molecular beam epitaxy equipment and ultra-high vacuum analysis equipment and other equipment. 5, the cycle time is short: Most turbomolecular vacuum pumps, especially smaller, to reach the normal operating speed of the time, usually takes 1 minute. Molecular vacuum pump Disadvantages: 1, equipment costs are high: the pumping speed greater than 1000L / s turbo molecular pump than the diffusion pump and cryogenic pump equipment investment. 2, sensitive to particles or sediments: once an accident damage is serious, there will not be a few pieces of reuse. Rebuilt, replacement parts is very expensive. In order to work safety, installed in the pump inlet fine pore filter to protect the normal operation of the pump. 3, noise and vibration: From the use of experience point of view, the vacuum pump will appear vibration and noise problems, mostly bearing damage and poor balance problems. 4, Broken Problem: Some users are afraid to use turbomolecular vacuum pump because they are afraid of broken rotor blades. When the pump is in normal operation, the impeller suddenly suffers foreign material or bearing wear and crushes. Often protective measures, such as adding filter at the entrance, is usually avoidable. 5, exposure to the atmosphere easily lead to accidents: any high vacuum pump will run into this accident. Such as regulation rupture, the entrance of the pipeline, valves, sealing problems, may suddenly make the vacuum pump inlet exposed to atmospheric pressure. Each product has its own characteristics, whether it is the advantage or its shortcomings, these characteristics along with the development of the times, continue to be improved and improved toward more and more suitable for the production needs of the direction. Molecular vacuum pump With the arrival of the vacuum pump era, its use continues to expand, I believe in the future, the development of molecular vacuum pumps and progress will be more and more impressive. Related Articles: Fixed-blade vacuum pump advantages and disadvantages Oil-sealed vacuum pump advantages and disadvantages

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