Go to GlobalSpec.com Home
Newsletter   FREE GlobalSpec e-Newsletters
Receive the latest news, trends, and technology relevant to your work.
(See Titles)

Towards the Single Pump Solution - Recent Development in High Speed Machines for Dry Vacuum Pumping

From Edwards Vacuum
 

 

The goal of a single _dry_ pump capable of reaching high vacuum and itself exhausting to atmospheric pressure has long existed in the vacuum field. The development of a single-shaft, high-speed pump EPX _second generation_ mechanism has gone some considerable way to achieving this goal. The pump exploits molecular drag and a fluid dynamic mechanism and is discussed in terms of the theory of operation, internal flow mechanisms and the technology innovations enabling the mechanism to be produced in large volume quantities.


Product Announcements
Electron Beam Engineering, Inc. - Low Frequency Beam Pulser For EB Welder
Electron Beam Engineering has added a Low Frequency Beam Pulser to its Beamer Series line of EB Welders. The Low Frequency Pulser will modulate the electron beam during welding. By varing the pulse... (read more)
Alcatel Vacuum Products, Inc. - PORTABLE, COMPACT DRY PUMPING SYSTEM
With an installed base of more than 4,000 Drytel systems worldwide, Alcatel offers the new, easy to operate, Drytel 1025 dry pumping system. The Drytel 1025 is a modern, reliable and cost-effective... (read more)
Oerlikon Leybold Vacuum USA Inc. - ScrewLine SP630
Export, PA, Summer 2004 - Leybold Vacuum USA has developed the ScrewLine SP 630 Dry Compression Vacuum Pump, the first model in a series of oil-free compression vacuum pumps that provides an... (read more)
Edwards Vacuum - Turbo pump for compact, efficient vacuum systems
Leading manufacturer of vacuum equipment for scientific applications, Edwards, has launched a new pump for laboratory vacuum systems. The EXT406PX turbomolecular pump allows a customer to build... (read more)
KNF Neuberger, Inc. - High Suction Diaphragm Pump for Roughing, Backing
The N920 pump provides high flow at near-maximum vacuum, the region where traditional diaphragm pumps have the most significant reduction in performance. It achieves up to <1.3 m3/hr pumping speed... (read more)
 

Topics of Interest
The hydraulic geometry or shape of a pump stage can in principle be chosen for given values of the other independent variables in Eqs. 34 or 35 so as to optimize the resulting performance; for... (Read More)
Equipment used to generate vacuum, as noted earlier, is similar to air compressors. It's even possible to generate compressed air or vacuum with the same machine, depending on how it is installed. (Read More)
PUMP DRIVE SHAFT SYSTEMS Pump drive system arrangements may be classified in one of two categories: those that are close-coupled, having a shaft separation of a fraction of an inch (not to be... (Read More)
Vacuum degassing (VD) and vacuum oxygen decarburisation (VOD) are the main processes in secondary steel making. The large volumes of dissolved contaminant gases arising and the generation of metallic... (Read More)
Selecting the right vacuum pumping system for your heat treat application is a complex and challenging task with the realization that no single type of vacuum pump is likely to provide all the... (Read More)