Customers Benefit from Technical Progress

The Delta Blower 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 blower manufacturer to design a compact unit in 1960 and has developed this machine type continuously ever since.

Delta Blower Generation 5 is therefore the fifth generation of Aerzen blower units and represents the successful combination of tradition and innovation. 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". For the special requirements in the suction pneumatic the new series has now been adjusted and further developed.

Lower Sound Levels

In comparison with the previous generation the sound levels of the new series Delta Blower Generation 5 could be considerably decreased, in average by approx. 6 db(A), in single cases even more. Special focus has been placed on the disturbing blow-off noise, therefore, for the nominal widths DN 80 to DN 125 (60 m³/h to 1550 m³/h) an integrated silencer had been designed. Within this range of nominal widths it can freely be blown off the acoustic hood resp. via piping. Upon request for the other sizes additional blow-off silencers are available. Thanks to the considerable sound reductions costly special measures (e.g. special acoustic hoods) can be avoided from the start.

Comparison of sound pressure levels (700 mbar with acoustic hood):

Delta Blower Gen5 vaccum - Comparison of sound pressure levels

Simple Operation and Easy Maintenance

During development, special consideration was given to the ease of handling of the new units. The first consideration was easy positioning and installation: The units can be transported at site, by means of a suitable fork or pallet truck.

They are delivered with a service pack that includes a lifting jack, oil funnel and an initial fill of oil, which also makes commissioning very easy. All service tasks and components that require maintenance are accessible from the front of the unit. However, the important advantage is the new oil system. The oil level can be viewed and checked from the outside with the blower fully operational, this is possible without any problems. Therefore, blower shutdowns, process and production interruptions belong to the past.

The most important advantage is however the new oil system. This makes a check of the oil level possible from the outside with the machine running. Necessary shutdowns of the machines and consequently interruptions of the process or the production thus belong to the past. Size DN 50 is the only exception. Due to the small dimensions the oil service can easily be carried out via the detachable acoustic hood roof.

Mechanical Fan

A mechanical fan mounted on the blower drive shaft is used to ventilate the acoustic hood. Without the need for an electric fan additional electrical installation and energy costs are saved. An additional advantage for this system is that it fully complies with all ATEX requirements. Expensive exproof fan motors are not required - a considerable cost saving.

Delta Blower Gen5 vaccum - suction conveyance

ATEX-certification

Aerzen blower units for intake- and discharge operation are designed acc. to the European machine guideline 94/9/EG especially for the requirements in categories 2 and 3 for dust- and gas zones. In addition the Aerzen units consider a protection against explosion for units acc. to ATEX-guideline 137 (1999/9/29EG).

Regarding intake operation it is to be ensured that in case of separation filter damage, no combustible dust-air-mixture is sucked into the blower. For this reason, usually an additional filter element (emergency filter) must be provided by the unit design. This also means additional expenditures for the project work, assembly and installation. Therefore Aerzener Maschinenfabrik has developed a puncture-proof filter element which can be integrated in the suction silencer.

The filter is monitored by a differential pressure measurement. Consequently the Aerzen special filter element replaces the previous additionally necessary emergency filter.

Space Saving Design

Delta Blower Gen5 Unterdruck - Verschleiß

Especially with the smaller size units the dimensions have been reduced, linked with the facility to install the units "side by side", the required floor space has also been considerably reduced. Providing further cost savings in designing the size of the blower room. Due to the changed dimensions and type of design there is a better possibility of replacement regarding the previous Aerzen generations KI, KII and KIII.

9 sizes in 5 nominal widths:
Less room needed due to compact design and installation variant "Side-by-Side".

Further advantages of the new series Delta Blower Generation 5 in vaccum design are the following:

Blower stage with patented procedure for pulsation reduction
Standard application for energy-saving motors of class EFF1
Compliant as per the PED guidelines (discharge silencer and pressure valve)
Automatic belt retention due to hinged motor mounting plate

Scope of supply:

Blower stage
Base support with integrated discharge silencer
Intake system with safety relief valve (vacuum breaking element)
Drive (hinged motor mounting plate and belt drive)
Connecting housing with pressure valve and non-return flap
Flexible piping connection

Accessories:

Acoustic hood for internal or external installation
Driving motor EFF1
Vacuum meter for indication of intake pressure
Differential pressure monitoring (option)
Aerzen blower control ASG 200 (option)
Puncture-proof filter element (option)