Air Blower/Damper for Combustion Systems

Product Specifications

Technical details and manufacturing context for Air Blower/Damper

Definition

The Air Blower/Damper is an integrated component used in combustion systems to supply combustion air and regulate its flow. It combines a blower, which generates airflow via mechanical impellers or fans, with a damper that adjusts the opening size to control air volume and pressure. This ensures an optimal fuel-air mixture and combustion efficiency. The device is available in materials such as galvanized steel, stainless steel, and aluminum alloy, and is designed for a range of operating conditions. Key parameters include an air flow rate of 500–5000 m³/h, operating pressure of 1.0–1.6 MPa, and operating temperature from -20°C to 120°C. The leakage rate is ≤0.5% (Class A shut-off), and actuation torque ranges from 10–100 N·m. Response time is 2–10 seconds for full damper stroke. Control signal is 4–20 mA (per IEC 60381), and supply voltage is 24 V DC ±10%. Ingress protection is IP54–IP65 (per IEC 60529). Body material options are WCB (carbon steel) or CF8 (stainless steel) per ASTM A216/A351, and seat materials are PTFE or RPTFE per ASTM D3294. Weight ranges from 15–60 kg depending on size and material. These values are reference ranges and must be verified with the manufacturer for specific models and applications. The device is suitable for various combustion systems, including industrial burners and boilers, where precise air control is critical. Proper selection requires consideration of system requirements, actuator compatibility, and environmental conditions. Regular maintenance includes checking damper seals and actuator operation. Failure signs include increased leakage, erratic airflow, or unusual noise. Always consult the legal manufacturer or supplier to confirm model-specific specifications and compliance with applicable standards.

Working Principle

The blower generates airflow through mechanical impellers or fans, creating a pressure difference that moves air into the combustion chamber. The damper, positioned in the air duct, adjusts the airflow by varying the opening size. This adjustment can be manual, pneumatic, or electric, allowing precise control of combustion air supply. By modulating the damper position, the system maintains the desired fuel-air ratio, optimizing combustion efficiency and reducing emissions. The actuator receives control signals (e.g., 4–20 mA) and adjusts the damper accordingly, with response times typically 2–10 seconds for full stroke. The blower and damper work together to ensure stable air supply under varying load conditions.

Common Materials

Galvanized steel, Stainless steel, Aluminum alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Air Flow Rate	500–5000 m³/h	Select based on combustion system requirement
Operating Pressure	1.0–1.6 MPa
Operating Temperature	-20–120 °C	Above 120°C requires high-temp seals
Leakage Rate	≤0.5 %	Class A shut-off for damper
Actuation Torque	10–100 N·m	Match with actuator size
Response Time	2–10 s	For damper full stroke
Control Signal	4–20 mA	Analog control inputIEC 60381
Supply Voltage	24 ±10% V DC	For actuator and control
Ingress Protection	IP54–IP65	For outdoor installationIEC 60529
Body Material	WCB/CF8	WCB for carbon steel, CF8 for stainlessASTM A216/A351
Seat Material	PTFE/RPTFE	PTFE for standard, RPTFE for high tempASTM D3294
Weight	15–60 kg	Depends on size and material

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Blower Housing Part
Encloses and directs airflow from the impeller

Material: Galvanized steel
Impeller/Fan
Rotates to generate airflow through centrifugal or axial action

Material: Aluminum alloy
Damper Blade Part
Adjustable plate that regulates airflow by changing opening size

Material: Stainless steel
Actuator
Mechanism that controls damper position (manual, pneumatic, or electric)

Material: Steel/Plastic composite

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Combustion System

View system integration details

Manufacturers of Air Blower/Damper

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Frequently Asked Questions

What is the typical air flow rate range for this air blower/damper?

The reference range is 500–5000 m³/h, but the actual value depends on the specific model and combustion system requirements. Always confirm with the manufacturer.

What materials are available for the body and seat?

Body materials include WCB (carbon steel) or CF8 (stainless steel) per ASTM A216/A351. Seat materials are PTFE or RPTFE per ASTM D3294. Selection depends on application and temperature.

What is the leakage rate and how is it measured?

The leakage rate is ≤0.5% for Class A shut-off, tested. This ensures minimal air bypass when the damper is closed.

What control signal and supply voltage are used?

The control signal is 4–20 mA per IEC 60381, and the supply voltage is 24 V DC ±10%. These are standard for actuator and control systems.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 1.5 bar (g)
flow rate:	Up to 50,000 m³/h
temperature:	-20°C to 400°C
slurry concentration:	Not applicable (dry air/gas only)

Air Blower/Damper

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards