The winder Impeller



New

WINDER

Impellers with higher efficiency
and less sound level

Winder Solutions

The last new generation impeller


With the Serrated Novovent Concept (S.N.C.), NOVOVENT, S.A. has developed a new blades’ generation. The S.N.C. is the result of three different research lines. Firstly, we get higher performance due to the sickle blades, secondly, due to the winglet applied at the end of the blade we debug turbulences and thirdly, in order to reduce the sound level we designed a serrated profile at the rear of the blades.
The S.N.C. blade compared with the traditional ones gets better performance in airflow and pressure; decreasing the power needs and sound levels about 15%.
The new impeller will be applied to all our axial product range.
Applied with the Multiflow Novovent System (M.N.S.) gives to NOVOVENT an exclusive range of products and the possibility to offer unique solutions

R+D+I
Our technical department is using for the designs and advanced applications the Computational Fluid Dynamic (CFD) and Finite Element Analysis (FEA)
Those systems get us pre-designed units, like Winder ones, to delimitate the first steps to check mechanical resistance avoiding possible mechanical failures and to pre-define fluid dynamics performance.
These first data are exported to our laboratory to test, check and validate the final design.

Acoustic
Novovent is equipped with the latest technologies
for measuring noise under the norm AMCA 300 (BS848 part 2).

Laboratory
It is a long process where our R&D department develops new prototypes, tests them in our own laboratory so that we can finally offer them in our catalogue once we are sure that they guarantee the level of quality that our costumers and the market are expecting.

Our Laboratory tests all acoustic, electrical and fluid dynamics performance of all fans within two cameras and nozzle entrance test for fans up to 1.600 mm in diameter, 150.000 m3/h and 3.000 pa of static pressure following the international standards, ISO 5801:1997, BS 848-1:1980 and ANSI / AMCA 210-85:1985.

General characteristics

AXIAL WINDER

• Up to diameter 630 frame of PP reinforced with fiber glass. The frame of bigger diameters are made from epoxy painted metal sheet. Deep opening.
• High efficiency impellers made of aluminium according the SERRATED NOVOVENT CONCEPT and the MULTIFLOW NOVOVENT SYSTEM. Dynamically balanced.
• All the models include epoxy painted grill.
• Motors class F, up to 750W protection IP 65, the others IP 55.
• Working temperature: -30°C to 70°C.
• Airflow: motor – impeller.

AXITUB WINDER

• Casing made from epoxy painted metal sheet. The models bigger than 7,5 kW with inspection door.
• High efficiency impellers made of aluminium according the SERRATED NOVOVENT CONCEPT and the MULTIFLOW NOVOVENT SYSTEM. Dynamically balanced.
• Motors class F, up to 750 W protection IP 65, the others IP 55.
• Working temperature: -30°C to 70°C.
• Airflow: motor – impeller.

AXITUB PIROS WINDER

• Casing made from epoxy painted metal sheet. The models bigger than 7,5 kW with inspection door.
• High efficiency impellers, made of aluminium according the SERRATED NOVOVENT CONCEPT and the MULTIFLOW NOVOVENT SYSTEM. Dynamically balanced.
• Three phase motor, class H, IP 55, certified according EN12101 and Ex 3G Eex nA IIA T3.
• Working temperature: (S1) -20 +40°C; (S2) 400°C 2h.
• High adjustable motor support, fixed to the housing by screws.
• Airflow: motor – impeller.

PIROS BOX WINDER

• Box made from galvanised metal sheet, with rock wool of 50 mm class M0.
• High efficiency impellers, made of aluminium according the SERRATED NOVOVENT CONCEPT and the MULTIFLOW NOVOVENT SYSTEM. Dynamically balanced.
• Three phase motor, class H, IP 55, certified according EN12101 and Ex 3G Eex nA IIA T3.
• Working temperature: (S1) -20 +40°C; (S2) 400°C 2h.
• High adjustable motor support, fixed to the housing by screws.
• Airflow: motor – impeller.


Options
AXIAL WINDER AXITUB WINDER AXITUB PIROS WINDER PIROS BOX WINDER
Different tensions, speed and frequencies, 2 speed motors.
Another configuration with different performance.
Airflow: impeller – motor.
Made in stainless steel.
Short cased.
For max. temperature of 200°C 2h, 300°C 2h.



Advantages winder impellers versus traditional ones

Better performances with less sound level
On this graph, we can be observed the advantages of the winder impellers versus the traditional ones. The sickle form from the blade (A) will enable better performances.

If we add to the sickle blade the winglet (B) we will get a high reduction in turbulences.

And finally, adding the serrated profile (C) we still increasing the performance and we reduce significantly the sound level.

The combination of the winglet, the serrated profile and the sickle form gets a better performance in airflow and pressure, decreasing the sound level.

Conventional impeller
Impeller with sickle form
Impeller with sickle form with winglet
Impeller with sickle form with winglet and serrated profile (WINDER)

Better performances, less power needs
This graph shows a comparison between winder model and conventional fan using the same diameter and similar performance. Winder solution is able to provide more airflow with less consumption. Winder needs a 5,5 kW motor meanwhile conventional fan needs 7,5 kW motor as illustrated.