Delta Screw Generation 5 - Compressor

The screw compressor unit Delta Screw Generation 5 is the synthesis of the successful characteristics developed in previous generations combined with new technical innovations that already meet the market requirements of the future.

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The new generation
The screw compressor unit Delta Screw Generation 5 is the synthesis of the successful characteristics developed in previous generations combined with new technical innovations that already meet the market requirements of the future.

Why Generation 5?
Aerzener Maschinenfabrik was the first compressor manufacturer to design a compact unit and has developed this machine type continuously ever since. Delta Screw Generation 5 is therefore the fifth generation of Aerzen compressor units and represents the successful combination of tradition and innovation. The considerable experience in manufacturing oil-free compressors is the guarantor for high-quality and most reliable compressor units. However compared to other blower models this new series offers 5 main advantages for the customers. 5 main advantages which led to the name "Generation 5".

Energy efficiency and reduction of Life-Cycle-Costs
The Aerzen screw compressors distinguish themselves by two different rotor profiles, which is a criterion which is so far unique on the market for screw compressors. For low-pressure applications up to 2 barg a specially designed 3 + 4-profile (VML-compressors), for higher pressures up to 3,5 barg a 4 + 6-profile (VM-compressors) is available.

Therefore, depending on the individual case of application and pressure range the energetically optimal compressor type is available. The energy efficiency increases furthermore by two different outlets per rotor profile, arranging depending on pressure and volume flow for an optimum of internal compression. The different internal pressure ratios avoid possible overcompressions, the efficiency of the machines increases. So, e.g. in the low pressure range up to 2 bar an energetic advantage of more than 20% compared with other compressor models may result. Furthermore the accessory components of the compressor units were revised technically. Due to innovations in the discharge pressure silencing, pressure losses have been reduced by up to 20%.

Sound pressure level of a VM 21 R-G5 screw compressor unit
determined acc. to the sound intensity procedure

In addition as standard only motors of the energy efficient class EFF1 are used. From this result further saving potentials depending on size of up to 3%. As two thirds of the Life-Cycle-Costs of compressors are determined by the energy consumption, the investment costs, when deciding for an Aerzen compressor unit, already pay off after a short time. Maintenance costs with a share of approx. 20 % are another essential factor when considering Life-Cycle-Costs. Also in this case the new Delta Screw Generation 5 compressor units captivate because of technical innovations.

Lower Sound Levels
Compared with the previous generation the sound levels of the new Delta Screw Generation 5 could be reduced by an average of about 6 dB(A), in some cases even more. Absorption material was not used intentionally further on (foodstuff-compatibility).

Due to these considerable sound reductions, expensive special measures (such as special acoustic hoods) are no longer required.

ATEX-certification
The translation of the European machine directive 94/9/EG for explosion-hazardous areas is becoming more and more important in all branches and ranges of application. The compressor units made by Aerzener are especially designed for the requirements in categories 2 and 3 for dust- as well as gas zones and certified accordingly.

In addition the new units Delta Screw Generation 5 distinguish themselves by a special solution for explosion protection in pneumatic conveying of bulk material. If combustible bulk material is conveyed pneumatically, in the unit in case of certain dust-air concentrations inflammable mixtures may develop. On the basis of the EU-directive 1999/92/EG (ATEX 137) therefore an additional protection e.g. by means of an external spark arrester in connection with compressors is to be provided. At this point starts the innovative solution of Aerzener Maschinenfabrik: The newly designed discharge silencer of the Aerzen compressor units is free from absorption material, the sound is dampened only by means of air-redirections. In expensive and practical tests this silencer could now be certified in addition as spark arrester. External spark arresters are no longer necessary! Besides utmost safety, consequently costs are saved and pressure- and energy losses are reduced considerably.

Click Here To Download:
•Brochure: Delta Screw Generation 5 - Compressor
•Video: Delta Screw Generation 5