This article's table of contents introduction:
- The Core Term: "Induced Draft Fan"
- The Type: "Forward Metallurgy Induced Draft Fan"
- The Material: "Aluminium Alloyed"
- The Configuration: "Single Inlet"
- Summary of your Fan
- Applications / Common Alternate Names
It looks like you have listed a series of technical descriptors for a fan. Based on the combination of these terms, you are likely describing a specific type of industrial fan, and the most accurate specific term to search for or classify this is a Forward Curved Centrifugal Fan (Squirrel Cage Fan) made from Aluminium Alloy.
Here is a breakdown of what each term means and how they fit together:
The Core Term: "Induced Draft Fan"
- Function: This fan is located after the process (e.g., a furnace, boiler, or kiln). It pulls (induces) exhaust gases, fumes, or hot air out of the system, creating negative pressure within the equipment.
- Implication for your description: Induced draft fans often handle hot, corrosive, or dirty gas streams. This makes the choice of material (Aluminium Alloy) very specific.
The Type: "Forward Metallurgy Induced Draft Fan"
- "Forward" : This refers to Forward Curved Blades. The blades curve in the direction of rotation.
- Characteristics: High volume, low noise, low pressure (compared to backward curved), and compact size.
- "Metallurgy" : This suggests the fan is designed for applications in the metals industry (steel mills, smelters, foundries). This implies high-temperature tolerance and resistance to particulate matter (dust, scale).
The Material: "Aluminium Alloyed"
- Why Aluminium? This is the defining characteristic of your query.
- Non-Sparking: Aluminium is a non-ferrous metal. It does not produce sparks when struck (unlike steel). This is critical for fans handling flammable gasses, hydrogen, or explosive dusts (common in some metallurgy processes).
- Corrosion Resistance: Good resistance to certain fumes and moisture.
- Light Weight: Aluminium wheels (impellers) have lower inertia, meaning lower starting torque and less stress on bearings, but also lower strength at high temperatures compared to steel.
The Configuration: "Single Inlet"
- Single Inlet (SI): Air enters the impeller from only one side (the opposite side has a motor mount or is sealed).
- Comparison: Double Inlet (DI) has air entering from both sides, moving much more air. Single Inlet is typically used for higher pressure or where space is constrained on one side of the fan housing.
Summary of your Fan
Full Name: Aluminium Alloyed, Single Inlet, Forward Curved, Centrifugal Induced Draft Fan (for Metallurgical Applications)
| Feature | Function / Impact |
|---|---|
| Aluminium Alloy | Non-sparking, corrosion-resistant, lightweight rotor. |
| Single Inlet | Air pulled from one side; higher pressure capability. |
| Forward Curved | High volume, quiet operation, compact design. |
| Induced Draft | Pulls gas through a process (furnace/kiln). |
| Metallurgy | Designed for high-temp, particulate-laden exhaust from metal processing. |
Applications / Common Alternate Names
You might find this fan listed under these names:
- Non-Sparking Centrifugal Fan
- Aluminium Bladed Exhaust Fan
- Squirrel Cage Fan (Aluminium Wheel)
- Furnace Induced Draft Fan
Important Note for Sourcing or Maintenance: If you are looking to buy or replace this fan, be very specific about the temperature rating. Standard aluminium loses significant strength above ~150°C (300°F). If your "Metallurgy" process involves hot gasses (>250°C / 480°F), the impeller is likely Aluminium-Bronze (a specific high-strength alloy) or a fabricated steel impeller, not standard 5000/6000 series aluminium.
