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An auxiliary combustion fan

An auxiliary combustion fan is a specialized ventilation device designed to actively supply air (or oxygen) to combustion systems such as boilers, industrial furnaces, incinerators, etc.

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Description

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Product Description

An auxiliary combustion fan is a specialized ventilation device designed to actively supply air (or oxygen) to combustion systems such as boilers, industrial furnaces, incinerators, etc. Its core function is to supplement the required oxygen for combustion, optimize the mixture ratio of fuel and air, thereby enhancing combustion efficiency and reducing pollutant emissions.

Core Functions and Working Principles

Core Functions

Oxygen Supply: Forcefully delivers sufficient air to the combustion chamber to meet the oxygen needs for the complete combustion of fuel (such as coal, natural gas, fuel oil, etc.), avoiding incomplete combustion due to lack of oxygen.

Optimized Combustion: By controlling airflow and wind speed, adjusts the mixture ratio of air and fuel (air-fuel ratio), reducing the generation of harmful gases such as black smoke and carbon monoxide.

Stable Operation: Maintains a reasonable pressure within the combustion chamber (usually slightly positive) to prevent backfire, flameout, and other safety issues, ensuring continuous and stable operation of the combustion system.

Working Principles

The motor drives the impeller to rotate, creating negative pressure inside the fan, which draws air from the outside; the air, after being accelerated and pressurized by the impeller, is transported through ducts to specific locations within the combustion system (such as below the grate, near the burner), where it mixes with the fuel and participates in the combustion reaction.

Main Application Scenarios

Industrial Sector: Power plant boilers, steel mill heating furnaces, chemical plant reactors, waste incinerators, and other large-scale industrial combustion equipment.

Civil/Commercial Sector: Gas wall-hung boilers, commercial kitchen appliances (some high-power models), small biomass boilers, etc.

Special Scenarios: Hot air furnaces, melting furnaces, and other equipment with high requirements for combustion efficiency and temperature control.

Key technical parameters (core selection criteria)

When selecting, focus on the following parameters to match the combustion system's requirements:

Parameter Name\tDescription

Airflow\tVolume of air conveyed per unit time (m³/h or m³/min), needs to be matched with fuel consumption to ensure adequate oxygen supply.

Air Pressure\tPressure required to overcome duct resistance and maintain combustion chamber pressure (Pa or kPa), calculated based on duct length, number of bends, etc.

Motor Power\tPower of the motor driving the fan (kW), directly affecting the fan's airflow and air pressure output capacity.

Rotational Speed\tNumber of revolutions per minute of the impeller (r/min), higher speed generally results in greater airflow and air pressure (needs to match motor power).

Medium Requirements\tTemperature of the conveyed air (ambient temperature / high temperature), dust content (whether a filter is needed), some scenarios require heat-resistant and corrosion-resistant materials.

Common Types (classified by structure / application)

Centrifugal combustion aid fan: High air pressure, stable airflow, suitable for complex ducts with high resistance in industrial furnaces (such as boilers), currently the mainstream type.

Axial flow combustion aid fan: Large airflow, low air pressure, suitable for short ducts with low resistance scenarios (such as small incinerators).

High-temperature combustion aid fan: Uses high-temperature resistant materials (such as stainless steel, heat-resistant steel) and sealed structure, can convey high-temperature air (such as for hot air furnaces).

Daily Maintenance Points

Regular cleaning: Clean the intake filter, impeller, and dust and oil inside the duct to prevent blockages that reduce airflow.

Lubrication maintenance: Add lubricating oil (grease) to the motor bearings according to the manual to avoid increased wear.

Operating condition check: Listen for any abnormal noise or vibration during operation, observe if the current is normal to prevent overload or component damage.

Standby maintenance: If the system has a backup fan, it needs to be switched regularly to avoid faults due to long-term idleness.

Zibo Hongcheng Fan Co., Ltd. specializes in producing over 50 series of fans and more than 600 specifications and models, offering a complete range of specifications and models. Custom production and processing according to drawings are available. Welcome to contact us for cooperation.

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Products

Products

Which wind turbine manufacturer leads in innovation?

How are Chinese wind turbine manufacturers innovating?

How does a titanium fan benefit sustainability?

How do power plant fans drive sustainability?

How do centrifugal steel mill fans boost efficiency?

How is a fan drive shaft crucial for sustainability?

An auxiliary combustion fan

Description

marker

Product Description

Core Functions and Working Principles

Main Application Scenarios

Key technical parameters (core selection criteria)

Common Types (classified by structure / application)

Daily Maintenance Points

contact us

Related popular products

Wear-resistant centrifugal fans

SDF tunnel construction axial flow fan

FBD series (dⅠ) explosion-proof pressure-injection counter-rotating axial flow local ventilation fan

High-pressure centrifugal blowers

High-temperature draft fans

Coal gas booster fan

Smoke exhaust fans

Desulfurization fans

Anti-corrosion centrifugal fans

XQ-type inclined chute high-pressure centrifugal fan

Jet fans

FBCDZ coal mine main ventilator

Fan motor

Dual Inlet Centrifugal Fan

Boiler centrifugal induced draft fans

Axial flow fans

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