Who bought Leybold?

Who bought Leybold?

Atlas Copco
Stockholm, Sweden, September 1, 2016: Atlas Copco, a leading provider of sustainable productivity solutions, has completed the acquisition of the Leybold vacuum business. Leybold is headquartered in Cologne, Germany, has about 1600 employees, and had revenues in 2015 of MEUR 340 (MSEK 3 150).

How does a turbomolecular pump work?

These pumps work on the principle that gas molecules can be given momentum in a desired direction by repeated collision with a moving solid surface. In a turbomolecular pump, a rapidly spinning fan rotor ‘hits’ gas molecules from the inlet of the pump towards the exhaust in order to create or maintain a vacuum.

How do vacuum pumps work?

Vacuum pumps essentially move gas molecules from one region to the next to create a vacuum by changing high and low-pressure states. As molecules are removed from the vacuum space, it becomes exponentially harder to remove additional ones, thus increasing the vacuum power required.

Does Atlas Copco own Leybold?

Effective as of September 1, 2016, Atlas Copco AB (Stockholm, Sweden) owns the former Oerlikon Leybold Vacuum GmbH, renamed Leybold GmbH. Founded in 1873, Atlas Copco is a global player with more than 43,000 employees in over 180 countries.

What is turbomolecular vacuum pump?

Turbomolecular pumps (TMPs) are kinetic vacuum pumps which operate using a very fast spinning rotor (usually rotating at between 24,000 and 90,000 RPM). Their typical operating pressures are in the high to ultra-high pressure range between 10-3 and 10-11 mbar, employing pumping speeds of between 10 and 4,000 l/s.

What is high vacuum pressure?

What is the definition of high, ultra and extreme high vacuum? The pressure range of XHV is usually defined as 10-12 mbar and lower, while UHV is between 10-7 and 10-12 mbar, and HV between 10-7 and 10-3 mbar.

How do you vacuum a refrigeration system?

IN SUMMARY

1. Use proper assembly practices to keep everything clean, dry, and tight.
2. Remove or fully depress cores.
3. Use dedicated large-diameter vacuum hoses and keep them as short as possible.
4. Keep clean oil in your pump and test the pump regularly.

What is 2 stage vacuum pump?

A two stage design has two rotors and vanes. This means that the first stage generates vacuum and the second stage cleans the system, leading to a deeper ultimate vacuum level. As a result, two stage pumps can produce a deeper vacuum than single stage pumps.

What is dry pump?

The definition of a dry vacuum pump is a pump that does not use any fluids to create a vacuum or contact the process gas and can also discharge to atmosphere. Timing gears with oil reservoirs and close clearances between the rotors and housing are additional attributes that make up a dry vacuum pump.

How many PSI is full vacuum?

14.7 PSIA
Vacuum pressure is measured relative to ambient atmospheric pressure. It is referred to as pounds per square inch (vacuum) or PSIV. The electrical output of a vacuum pressure transducer is 0 VDC at 0 PSIV (14.7 PSIA) and full scale output (typically 5 VDC) at full scale vacuum, 14.7 (0 PSIA).

Is 0 pressure a vacuum?

The term “vacuum” is used to describe the zone of pressure below atmospheric pressure. In this case, the scale on the gauge reads 29.92″ Hg at atmospheric pressure and 0″ Hg would be perfect vacuum. Please note that a perfect vacuum is not possible on earth, no matter which vacuum pump is used.

Will a vacuum pump evacuate refrigerant?

There’s absolutely no need to use a vacuum pump to remove the refrigerant. It’s really easy to remove the refrigerant by condensing it out.