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A smoke extractor fan is a specially designed fan used to maintain air quality by extracting smoke from the source to the outside environment. They are available in various types to cater to different applications.
Centrifugal Smoke Extractor Fans
Centrifugal smoke extractor fans are used in varied industrial and commercial settings for building smoke control systems. Such a designed extractor works by using the principle of centripetal force to expel smoke from the building through the ventilation ducts. It does this by rotating its scroll housing, which in turn propels the smoke onto the open atmosphere. Centrifugal smoke extractor fans are made to resist high temperatures for extended periods of time, making them appropriate for smoke removal purposes.
Axial Smoke Extractor Fans
Axial smoke extractor fans are designed to extract large volumes of smoke and air at relatively low pressures. The fan's design consists of an impeller with blades mounted parallel to the fan's shaft. An axial smoke extractor fan functions by forcing the smoke horizontally along the axis of the fan. The extractor fan is usually installed vertically or horizontally in ducts or openings. However, it can be installed in such a way that it's able to extract the smoke from the source efficiently. The fans are commonly used in tunnels, building corridors, and staircases.
Fume Cupboards Smoke Extractor Fans
A fume hood extractor fan is designed specifically to get rid of hazardous fumes, vapors, and smoke from laboratories. Fume cupboards are enclosed ventilated cupboards within the same context used to protect users from exposure to harmful substances. The smoke extractor works by drawing the fumes from the laboratory into the ventilation system. This process helps to keep the lab cupboards safe for use and prevents environmental contamination.
Extraction airflow:
Balancing out the airflow in a workspace is vital. Smoke extractors are made to provide a specific extraction airflow measured in cubic meters per hour (m³/h). This shows how much air the fan can manage, which is crucial for removing smoke efficiently.
Fan speed:
Smoke extractor fans come with different speeds. Often, it's a choice between a faster and a more energy-saving speed. Having options is vital. Factories and kitchens might need the fan at maximum speed to deal with a high volume of smoke, while other places might use a slower speed to save on energy.
Noise level:
Smoke extractor fans are measured in decibels (dB). This is important since fans with high extraction power often produce more noise. Knowing the noise level will help users find a fan that can manage smoke without making a lot of noise. This is essential for places where keeping the noise down is as vital as getting rid of the smoke.
Filters:
Fat filters in smoke extractor fans trap grease and smoke particles. Indicators that show when it's time to clean the filter are essential. Regular maintenance is crucial because dirty filters reduce extraction efficiency and can cause fire hazards.
Routine inspection and cleaning are crucial for proper smoke extractor fan maintenance. Check and clean the fan and ducting regularly to prevent further issues, as neglecting them can cause breakdowns and expensive repairs. Schedule professional servicing annually, especially for commercial smoke extractor fans used in kitchens and restaurants, to ensure safety and compliance with legal standards. According to the law, smoke extractor filters must be cleaned at least every six months, while ducts and fans should be checked annually. Adhering to these regulations is vital to prevent fire risks and maintain the proper functioning of the smoke extraction system.
There are numerous applications where smoke extractor fans are essential for workplaces. Here are some of them:
Industrial manufacturing plants
Manufacturing plants use smoke extractor fans to improve ventilation in factories. The fans are positioned strategically to remove undesirable gasses, smoke, odors, and fumes produced during the manufacturing process to create a conducive environment for workers.
Production facilities with heavy-duty machinery
Extractor fans are used in areas where heavy-duty machinery is used and produce excessive heat. The fans aid in cooling the entire room by extracting excess heat and bringing in fresh air to maintain a balanced temperature.
Commercial kitchens
Smoke extractor fans are crucial for commercial kitchens. They are integrated into ventilation hoods over cooking appliances to remove smoke, grease, fumes, and excess heat generated during cooking. This helps maintain indoor air quality and prevents fire hazards from grease buildup.
Heavy welding workplaces
During heavy welding operations, smoke extractors are used to maintain a healthy environment for workers. The fans are positioned strategically to remove harmful fumes and smoke generated during the welding process.
Labs and chemical manufacturing units
Extractor fans are used during chemical reactions to prevent the buildup of toxic gasses and fumes to ensure safe working environments.
Warehouses
In warehouses, smoke extractor fans are used to improve general ventilation by extracting smoke from the room to avoid fire spread and ensure safety.
Automotive workshops
In automotive workshops, smoke extractors are used to remove exhaust fumes from vehicles, oil mist, and other contaminants that might be harmful to workers’ health.
Construction sites
Construction sites use smoke extractor fans to improve ventilation by extracting dust and harmful gasses to protect workers from pollution.
Application
Selecting a smoke extractor fan for the intended application is essential for ensuring performance and effectiveness. Different uses have varying needs. For example, industrial settings might require heavy-duty models capable of handling high volumes of smoke continuously. On the other hand, smaller-scale domestic kitchens would do well with compact yet efficient extractor fans designed specifically for kitchen premises. Besides looking at where the extractor fan would get installed, also consider the type of smoke it will be dealing with. Some environments might produce grease-laden smoke, necessitating the need for extractor fans equipped with filters to tackle such challenges effectively.
Airflow
When choosing smoke extractor fans, it's crucial to consider their airflow rates since it's measured in cubic meters per hour (m3/h). This is especially important for business buyers looking to purchase smoke extractor fans for others. The higher the figure, the more air the fan moves. To select the right amount of airflow required for an area, it would help to calculate its volume. Simply multiply the length by the width and height. Then, for the room's volume, multiply by 20 to 30, which gives the extractor fan's airflow needed to exchange the room's air between 20 to 30 minutes. For rooms with high smoke concentration, it's best to have a higher room air exchange. Besides clicking the formula, keep in mind that a fan with a higher airflow consumes more power.
Certification and compliance
When selecting smoke extractor fans, it's crucial to prioritize models that meet safety standards and possess relevant certifications. Choosing fans with the CE mark signifies compliance with EU safety, health, and environmental requirements, ensuring products of high quality are used. Additionally, selecting smoke extractor fans with ISO certification guarantees a rigorous quality management system during manufacturing processes. This ensures that the extractor fan produced are reliable, efficient, and built to withstand demanding conditions. With such certifications, one can be confident the smoke extractor fans upholds essential safety principles and environmental considerations.
Q1. How does a smoke extraction fan works?
A1. Smoke extractor fans work by creating a direction flow of air. The premise of the working of extractor fans is based on the fact that less pressure pulls air from a space of greater pressure. The smoke extractor fan works by creating less pressure in the surrounding area through the rotation of the blades. The less pressure pulls and pushes the smoke and other airborne contaminants through and out of the space.
Q2. What is the difference between an exhaust fan and an extractor fan?
A2. The extraction and exhaust fans function the same way, which is to eliminate smoke, air, and other pollutants from a given space. The extractor fans take in and push out the air and smoke of the room through its ducts. However, extractor fans may not necessarily have ducts. The extractor fan blows the air out of the building, whereas the smoke extractor fan and exhaust fan blow the air into the ducts and then into the atmosphere.
Q3. Where are smoke extractor fans installed?
A3. Smoke extractor fans are installed in places with a greater tendency of smoke production like kitchens, industries where manufacturing of products that produce a lot of smoke, and close spaces where people gather and the likelihood of smoke is high.
Q4. Are smoke extractor fans necessary?
A4. According to studies and research of smoke and people exposed to smoking daily, smoke extraction fans are necessary. In fire incidents, the smoke extractor fans play a huge part in saving lives by clearing out the smoke and helping the firefighters locate the source of the fire. Hospitals and other health facilities need smoke extractor fans because the patients need a clean airspace to live in.
