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Radial Open Blades Fans Catalogue

Radial Open Blades Fans Catalogue
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Radial Open Blades Fans Catalogue

Product catalog summary
Characteristics
The centrifugal fans are designed to operate with air at a temperature of +15°C and a barometric pressure of 760 mm Hg, with a specific gravity of 1.226 Kgf/m3. Noise levels are measured in decibels (dB/A) at a distance of 1.5 meters, following UNI standards.

Orientations
Fans can be constructed in 16 different outlet positions, with 8 clockwise (RD) and 8 counterclockwise (LG) rotations. The rotation direction is determined from the transmission side, with some fan sizes adjustable while maintaining the rotation direction.

Special Constructions
Fans can be built to ATEX standards and with corrosion-proof materials for handling corrosive fluids, including options like austenitic stainless steels (AISI 304-316). Custom constructions are available based on customer needs.

Accessories
Available accessories include inspection doors, discharge caps, transmission protection, vibrating proof joints, safety grates, and flow regulators.

Technical Specifications
Key symbols and units include delivery (V) in m3/min or m3/h, total pressure (pt) in Kgf/m2 or Pascal, dynamic pressure (pd), speed (c2) in m/s, fan rounds per minute (n), noise level (Lp) in dB/A, power absorbed (P) in kW, and fan efficiency (η).

Construction Executions
Fans are constructed according to UNI EN ISO 13349 (2009) standards, with options for belt drive and direct drive. Maximum air temperatures range from 80°C to 350°C depending on the presence of a cooling fan.

General Concepts
Centrifugal fans consist of a scroll with a rotating wheel powered by an external energy source, typically an electric motor. Key characteristics include delivery, pressure, efficiency, and rotation speed. Delivery is the volume of fluid moved per time unit, while pressure is the sum of static and dynamic pressures.

Performance Variations
Performance changes with rotation speed and air specific gravity. Delivery varies directly with rotation speed, while pressure and power vary with the square and cube of the rotation speed ratio, respectively. Specific gravity variations affect pressure and power directly.

Applications
These fans are suitable for handling very dusty air with suspended materials, such as in woodworking plants, shavings, granules, textile, paper, and plastic trimming handling, tannery shavings, and waste management.
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Catalog excerpts

Radial Open Blades Fans Catalogue-1

Ventilatori Centrifughi Centrifugal Fan Pale aperte - Media pressione Open blades - Medium pressure

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Radial Open Blades Fans Catalogue-2

CARATTERISTICHE Le caratteristiche riportate sui diagrammi sono riferite in premente con aria alla temperatura di +15°C, alla pressione barometrica di 760 mm di Hg, con peso specifico di 1,226 Kgf/m3. RUMOROSITÀ I valori di pressione sonora indicati in catalogo sono espressi in decibel scala A (db/A), si intendono misurati in campo libero alla distanza di 1,5 m dal ventilatore funzionante alla portata di massimo rendimento e collegato a tubazione in aspirante e in premente secondo norme UNI. ORIENTAMENTI Tutti i ventilatori possono essere costruiti in 16 posizioni diverse della bocca di mandata...

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Radial Open Blades Fans Catalogue-3

Esecuzioni costruttive dei ventilatori secondo le norme UNI EN ISO 13349 (2009). Fans constructive executions in conformity with rules UNI EN ISO 13349 (2009). ESECUZIONE 1 Accoppiamento a cinghie. Girante calettata a sbalzo. Supporto montato su sedia al di fuori del circuito dell’aria. Temperatura max dell’aria 90 °C senza ventolina di raffreddamento; 350 °C con ventolina. EXECUTION 1 For belt drive. Whee keyed overhung. Supports mounted on a base outside the air stream. Max air temperature 90 °C without cooling fan; 350 °C when fitted with cooling fan. ESEC. 4 ESECUZIONE 4 Accoppiamento diretto....

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Radial Open Blades Fans Catalogue-4

Concetti generali sui ventilatori centrifughi Il ventilatore centrifugo è costituito da una coclea nel cui interno ruota una girante sotto l’azione di una sorgente di energia esterna (normalmente un motore elettrico). Le caratteristiche principali distintive di un ventilatore centrifugo sono: a) portata c) rendimento b) pressione d) velocità di rotazione PORTATA È rappresentata dal volume del fluido aspirato dal ventilatore nell’unità di tempo; viene espressa normalmente in m3/sec., m3/min., o m3/h. PRESSIONE Viene comunemente espressa in kgf/m2 o Pa. La pressione generata da un ventilatore viene...

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Radial Open Blades Fans Catalogue-5

General concepts abouts centrifugal fans The centrifugal fan essentially in a scroll in which a wheel rotates. The wheel’s movement is caused by an external energy source, that is usually an electric motor. The main characteristics of a centrifugal fan are: a) delivery c) efficiency b) pressure d) rotation speed DELIVERY It is indicated by the value of the fluid intaken through the fan in the time unit; normally this is stated by the ratio m3/sec., m3/min., or m3/h. PRESSURE It is usually indicated by the ratio kgf/m2 or Pa. The pressure generated through a fan is named TOTAL (pt); it is the...

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Radial Open Blades Fans Catalogue-6

VENTILATORI CENTRIFUGHI MEDIA PRESSIONE FANS CENTRIFUGAL MEDIUM PRESSURE TRASMISSIONE BELT DRIVE Ventilatore centrifugo a bassa e media pressione. Low and medium pressure centrifugal fan. Girante radiale a pale aperte. Open blades radial impeller. Motore accoppiato tramite trasmissione a cinghia. Trasmission: Belt drive. Costruzione rinforzata per impiego gravoso. Heavy duty structure for hard work. Questa linea di ventilatori è idonea per aspirazione di aria molto polverosa con materiali in sospensione (polveri o granulati). A girante a pale radiali consente il passaggio di materiali anche filamentosi...

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Radial Open Blades Fans Catalogue-7

CARATTERISTICHE IN MANDATA SPECIFICATIONS IN DISCHARGE STAGE Secondo norme UNI EN ISO 5801:2009 (UNI 10531:1995) According to the UNI EN ISO 5801:2009 (UNI 10531:1995) ZONA IN GIALLO Consultare ufficio tecnico Giri massimi ammissibili: Maximum admissible rounds: YELLOW ZONE Consult technical office Secondo norme UNI EN ISO 5801:2009 (UNI 10531:1995) According to the UNI EN ISO 5801:2009 (UNI 10531:1995) ZONA IN GIALLO Consultare ufficio tecnico Giri massimi ammissibili: Maximum admissible rounds: YELLOW ZONE Consult technical office Tolleranza sulla rumorosità + 3 dBA Noise level tolerance +...

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Radial Open Blades Fans Catalogue-8

SPECIFICATIONS IN DISCHARGE STAGE Secondo norme UNI EN ISO 5801:2009 (UNI 10531:1995) According to the UNI EN ISO 5801:2009 (UNI 10531:1995) ZONA IN GIALLO Consultare ufficio tecnico YELLOW ZONE Consult technical office Giri massimi ammissibili: Maximum admissible rounds: <100°C = 3550 giri/min. 100÷200°C = 2800 giri/min. Secondo norme UNI EN ISO 5801:2009 (UNI 10531:1995) According to the UNI EN ISO 5801:2009 (UNI 10531:1995) ZONA IN GIALLO Consultare ufficio tecnico YELLOW ZONE Consult technical office Giri massimi ammissibili: Maximum admissible rounds: <100°C = 3150 giri/min. 100÷200°C =...

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Radial Open Blades Fans Catalogue-9

CARATTERISTICHE IN MANDATA SPECIFICATIONS IN DISCHARGE STAGE ZONA IN GIALLO Consultare ufficio tecnico YELLOW ZONE Consult technical office Giri massimi ammissibili: Maximum admissible rounds: ZONA IN GIALLO Consultare ufficio tecnico YELLOW ZONE Consult technical office Giri massimi ammissibili: Maximum admissible rounds: <100°C = 2500 giri/min. 100÷200°C = 2000 giri/min. kw assorbiti ventilatore tolleranza ± 3% kw consumed fan tolerance ± 3% Tolleranza sulla rumorosità + 3 dBA Noise level tolerance + 3 dBA

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Radial Open Blades Fans Catalogue-10

SPECIFICATIONS IN DISCHARGE STAGE ZONA IN GIALLO Consultare ufficio tecnico YELLOW ZONE Consult technical office Giri massimi ammissibili: Maximum admissible rounds: Giri massimi ammissibili: Maximum admissible rounds: kw assorbiti ventilatore tolleranza ± 3% kw consumed fan tolerance ± 3% Tolleranza sulla rumorosità + 3 dBA Noise level tolerance + 3 dBA YELLOW ZONE Consult technical office ZONA IN GIALLO Consultare ufficio tecnico

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Radial Open Blades Fans Catalogue-11

CARATTERISTICHE IN MANDATA SPECIFICATIONS IN DISCHARGE STAGE Giri massimi ammissibili: Maximum admissible rounds: ZONA IN GIALLO Consultare ufficio tecnico YELLOW ZONE Consult technical office Giri massimi ammissibili: Maximum admissible rounds: kw assorbiti ventilatore tolleranza ± 3% kw consumed fan tolerance ± 3% Tolleranza sulla rumorosità + 3 dBA Noise level tolerance + 3 dBA YELLOW ZONE Consult technical office ZONA IN GIALLO Consultare ufficio tecnico

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Radial Open Blades Fans Catalogue-12

dimensioni d'ingombro e pesi overall dimensions and weights Tabella orientamenti Table of discharge positions Il ventilatore è orientabile The fan is revolvable Il ventilatore non è orientabile The fan is not revolvable Tipo Type Albero Shaft Basamento Base Peso Weight Flangia premente Outlet flange Flangia asp. Inlet flange Tabella non impegnativa The above date are unbinding Peso ventilatore in kg (esecuzione 1) Fan weight in kg (execution 1)

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