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In order to prevent unintentional contact with fingers or other objects, fan guards are utilised to create a physical barrier around rotating fan blades. They are often manufactured using metal wire or plastic. The shape of the fan blades themselves and the level of accessibility needed determine the different types of fan guards that are produced. thes of the averaging,s of the a,s, and the,s s the averages,. Certain fan guard systems contain filter media to help stop dust and other contaminants from entering enclosures through the fan. Both snap-on variants, which attach directly by applying a pressing force, and through-hole ones that are fastened with a screw or bolt are available as mounting choices.
Configurations
Fan guards can have two-dimensional or three-dimensional geometries developed for them. Metal wire fan guards are made by a process that includes cutting, bending, welding, and surface preparation. Fabrication techniques for metal fan guards include automated wire mesh welding and CNC wire coil shaping. Stainless steel, aluminium alloy, and low carbon steel are all acceptable materials for metal wire.
Injection moulding is a common method for producing plastic fan guards out of materials like nylon, polybutylene terephthalate (PBT), and acrylonitrile butadiene styrene (ABS). UL94V-0 and other fire resistance standards are frequently found on plastic fan shields.
A variety of fan guard configurations are available, such as:
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Circular
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Rectangular
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Dome type
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Oval
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Flat type
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Metal Fan
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Specialized shapes
Various finishes and surface treatments are often available that offer corrosion protection for metal fan guards. These include:
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Bright nickel chrome plating or polish
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Zinc plating
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EPDM Gasketing
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Anodizing
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Heat treatment
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Annealing
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Epoxy powder coating
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Polymer powder coating
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Plastic dipping (PVC, PE)
Applications
Fan guards can be utilised in a variety of situations, such as:
Industrial exhaust fans that remove air that may be contaminated with smoke, toxic gases, fumes, and other unfavourable elements from a structure or workspace.
Heat exchangers, cooling towers, and process dryers are just a few examples of large-scale industrial process equipment that can use process cooling fans.
Pneumatic fans for material handling that are used to transport granular materials, such as grains, powders, and pellets of plastic resin, between storage bins and to production machinery.
HVAC (heating, ventilation, and air conditioning) fans that circulate air in structures and other enclosed spaces, such as plenum and duct fans.