Description
ATEX axial ring fan
The ATEX ring fan is an axial fan designed for moving air and clean gases in industrial environments where explosive atmospheres may occur. It is designed for applications where the presence of flammable gases, vapours or dust must be taken into account.
This ATEX axial fan is available in various configurations for environments with gas or dust explosion hazards. Depending on the required ATEX category, ventilation capacity and installation method, the fan configuration can be tailored to the application.
With impeller diameters ranging from approximately 300 to 1,250 mm and a maximum airflow capacity of up to approximately 79,000 m³/h, this ring fan offers a wide range of possibilities for industrial ventilation applications.
Applications of the ATEX ring fan
The ATEX ring fan is suitable for moving air in industrial environments where explosive atmospheres may occur. It can be used for supplying and extracting air in rooms and processes where flammable gases, vapours or dust may be present.
Typical applications include:
- Chemical and petrochemical industries: Ventilation of production areas and process environments where flammable gases or vapours may be released.
- Oil and gas industry: Air movement in installations and spaces where explosive gas mixtures may occur.
- Battery charging rooms: Ventilation of rooms where explosive gas mixtures may develop during battery charging.
- Industrial production environments: Ventilation of workspaces and production processes where flammable substances may be present.
- Storage areas: Ventilation of spaces where flammable gases, vapours or dust are stored or processed.
The ring design makes this fan suitable for applications such as wall mounting and installation in air ducts or ventilation openings. The correct configuration depends on the explosive atmosphere present, the ATEX zone and the required ventilation performance.
ATEX specifications and explosion protection
The ATEX ring fan is available in various configurations for environments with gas and dust explosion hazards. The available versions fall under Equipment Group II and are based on ATEX Directive 2014/34/EU.
Depending on the application, the following ATEX categories are available:
- Category 2G: Suitable for gas explosion hazard zones 1 and 2.
- Category 3G: Suitable for gas explosion hazard zone 2.
- Category 2D: Suitable for dust explosion hazard zones 21 and 22.
- Category 3D: Suitable for dust explosion hazard zone 22.
Several specifications must be considered when selecting the correct ATEX configuration. These include the gas or dust group, temperature class and required level of protection. The characteristics of the explosive atmosphere and the operating conditions of the fan also play an important role.
The exact ATEX marking and available combinations depend on the selected configuration. This determines which fan is suitable for the specific potentially explosive environment.
Construction and features
The ATEX ring fan consists of components designed for use in potentially explosive atmospheres. Particular attention has been paid to material selection, construction and the clearances between moving and stationary components.
The main construction features include:
- Fan housing: Steel ring housing with an epoxy-polyester coating. Depending on the configuration, an aluminium strip is fitted around the impeller’s rotational area.
- Impeller: Aerodynamically designed impeller, available in aluminium or antistatic plastic.
- Adjustable blades: The impeller blade pitch can be adjusted when the fan is stationary.
- Electric motor: Asynchronous electric motor with IP55 protection rating and insulation class F.
- Motor protection: Protective guard on the motor side, manufactured in accordance with UNI EN ISO 12499.
- Drive: Direct drive, with the impeller mounted directly onto the motor shaft.
The fan is available with various motor power ratings and speeds. This allows the airflow capacity to be matched to the required air volume and the resistance of the installation.
Configurations and accessories
The ATEX ring fan is available in various construction configurations. Depending on the required installation method, versions with a rounded connection flange on one or both sides are available.
Various accessories are also available to adapt the fan to the application:
- Protective guard on the impeller side.
- Gravity-operated backdraught shutter (for installation in a safe area).
- Square mounting panel.
- Mounting feet for horizontal installation.
Depending on the application, additional configurations are also possible, including reversible airflow, alternative airflow directions and versions in stainless steel or aluminium. Availability depends on the selected configuration and is subject to request.
Technical specifications
- Type: Axial ring fan
- Version: ATEX
- ATEX Directive: 2014/34/EU
- Equipment Group: II
- ATEX categories: 2G, 3G, 2D and 3D
- Impeller diameter: Approximately 300 to 1,250 mm
- Maximum airflow capacity: Up to approximately 79,000 m³/h
- Medium: Clean, non-abrasive and non-corrosive gases
- Medium temperature: -20 °C to +40 °C
- Motor: Asynchronous, direct drive
- Motor protection rating: IP55
- Motor insulation class: F
- Supply voltage: 230 V single-phase or 400 V three-phase, 50 Hz
- Available speeds: 750, 1,000, 1,500 or 3,000 rpm
The final specifications, performance and ATEX marking depend on the selected configuration. Not all combinations are available.
Looking for the right ATEX ring fan?
Selecting an ATEX fan involves more than just determining the required airflow capacity. The explosive atmosphere present, the ATEX zone, the gas or dust group and the temperature class all help determine which configuration is suitable.
The required airflow, available installation space and system resistance must also be considered when selecting the right fan.
We are happy to help you find the right configuration. We look at the technical requirements of your application and help determine a suitable fan configuration.
Looking for an ATEX ring fan for your application? Contact us or request a quotation. We are happy to help you find the right configuration.
This product is part of our range of ATEX fans, ATEX axial fans and axial fans.
