Industrial Roof Ventilation Fan | Mushroom Air Extractor for Factories

Industrial Roof Ventilation Fan - Mushroom Air Extractor Design

 

Brief Product Note

This roof-mounted axial extractor is engineered to remove process heat, smoke and airborne contaminants reliably from industrial buildings. Its mushroom canopy directs discharge upward while shielding the intake from rain and debris - a simple geometry that yields steady exhaust performance with minimal upkeep.

What Sets It Apart

Upward-Optimized Discharge: The unit's vertical exhaust path reduces recirculation at roof level, improving the net extraction rate compared with conventional side-vent configurations.

Weather-Smart Hood: The mushroom canopy is shaped to deflect rainfall and particulates while maintaining aerodynamic flow - no separate rain cap required.

Operational Longevity: Internal components are selected for continuous-duty cycles: bearings sized for extended life, motors with thermal protection, and corrosion-resistant housings for rooftop exposure.

Maintenance-Friendly Access: The design keeps service points accessible from the roof deck - filters, bearings and motor mounts are reachable without complex disassembly, cutting inspection time.

Engineering Highlights

Axial impeller tuned for stable flow across a broad operating window (low to full load), minimizing stalls and surges in dusty environments.

Balanced rotor assembly that reduces vibration transmission to the roof structure and extends bearing life.

Sealed electrical enclosure and rated ingress protection to withstand rooftop moisture and condensation.

Optional coatings and materials (galvanized, stainless upgrade) to match corrosive or coastal site demands.

Performance & Benefits

Rapid removal of stratified heat layers improves occupant comfort and protects temperature-sensitive equipment.

Reduced HVAC load: by expelling hot process air at source, the fan helps lower cooling energy needs inside the building.

Quiet, low-vibration operation supports continuous use near production zones without creating nuisance noise.

Modular choices allow matching performance to ductwork back-pressure and roof aperture constraints.

Typical Installations

Production halls with high heat-generating equipment

Warehouses and distribution centers with point-source heat or fumes

Commercial kitchens, paint booths, and light manufacturing units

Retrofit projects where roof space is the preferred exhaust route

Installation & Service Notes

Supplied with a factory-aligned base flange that simplifies on-site securing to curb or curb adapter.

Motors pre-wired to isolate starter location - field wiring clearance and starter sizing clearly marked in the installation guide.

Routine service: inspect bearings and belt (if fitted) every 6 months under normal duty; more frequent checks advised in dusty or corrosive conditions.

Typical Specification Snapshot (example)

Fan type: Axial flow, mushroom canopy

Drive: Direct or belt drive options

Motor power: configurable (0.75 kW - 22 kW typical ranges; consult for higher ratings)

Materials: Galvanized steel standard; stainless or coated options available

Ingress rating: IP54 standard; IP65 optional for harsh environments

Note: provide your facility's roof curb size, desired airflow (m³/h), and approximate static pressure when requesting a selection - we'll size the unit to match real jobsite conditions.

Final Word

This mushroom-style roof extractor is designed for operators who need dependable exhaust without complicated rooftop assemblies. It's compact, serviceable, and built to keep process air moving day after day - a pragmatic choice when uptime and low maintenance matter most.

Interested in sizing this for your building? Share your airflow target and roof curb dimensions and we'll recommend the matched configuration.

Product Parameters

Performance Parameters of DWT-I Axial Flow Roof Fan 6.1. DWT-I axial flow roof fan (fixed angle) performance parameter table

Machine No.	Rotating Speed (rpm)	Airflow (m3/h)	Total Pressure (Pa)	power (kW)	dB(A)
3	2850	3300 3000 2600	181 206 232	0.37	66
	1450	1650 1560 1450	62 66 72	0.06	56
4	2850	7450 6350 5300	193 230 250	0.75	69
	1450	5700 5400 4580	176 184 190	0.55	67
	960	3820 2860 1880	80 86 92	0.25	60
5	1450	8000 7000 5600	135 162 191	0.55	68
	960	7000 6700 6400	113 122 131	0.37	63
	720	6000 5000 4100	88 92 96	0.25	58
6	1450	15000 14000 13000	232 251 267	1.5	73
	960	11000 10000 9100	168 183 193	1.1	67
	720	8500 8000 7600	111 127 136	0.55	62
7	960	17500 15000 12500	165 201 212	1.5	69
	720	12000 11000 9200	141 163 177	0.75	63
	560	9300 8500 7200	83 94 102	0.55	59
8	960	27000 25000 23000	175 207 228	2.2	72
	(rpm)	(m3/h)	(Pa)	(kW)	dB(A)
8	720	20000 18000 16000	129 154 167	1.5	66
	560	15750 14500 12250	78 96 121	0.75	63
9	960	34500 29000 24000	202 236 256	3.0	76
	(rpm)	(m3/h)	(Pa)	(kW)	dB(A)
3	2850	3300 3000 2600	181 206 232	0.37	66
	1450	1650 1560 1450	62 66 72	0.06	56
4	2850	7450 6350 5300	193 230 250	0.75	69
	1450	5700 5400 4580	176 184 190	0.55	67
	960	3820 2860 1880	80 86 92	0.25	60
5	1450	8000 7000 5600	135 162 191	0.55	68
	960	7000 6700 6400	113 122 131	0.37	63
	720	6000 5000 4100	88 92 96	0.25	58
6	1450	15000 14000 13000	232 251 267	1.5	73
	960	11000 10000 9100	168 183 193	1.1	67
	720	8500 8000 7600	111 127 136	0.55	62
7	960	17500 15000 12500	165 201 212	1.5	69
	720	12000 11000 9200	141 163 177	0.75	63
	560	9300 8500 7200	83 94 102	0.55	59
8	960	27000 25000 23000	175 207 228	2.2	72
9	720	20000 18000 16000	129 154 167	1.5	66
	560	15750 14500 12250	78 96 121	0.75	63
10	960	34500 29000 24000	202 236 256	3.0	76

Detailed Photos

 

 

Packaging & Shipping

1) The equipment is equipped with a number of signs such as a product nameplate, rotation direction sign, wind direction sign, grounding sign, lifting sign, safety warnings, and so on.
2) Product nameplate mainly includes the contents of the equipment: main technical parameters (flow, pressure, motor power, Revolutions Per Minute), product number, manufacturing date, and so on, which is convenient for users to check at any time
3) Small equipment adopts the type of export wood packaging and large equipment, and the steel frame transports large cargo transportation.
4) All equipment is waterproof and rainproof.

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