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Quạt ly tâm mái xả

A curb-mounted centrifugal exhaust fan that protects its motor and wheel beneath a weather-resistant hood while discharging clean air downward across the roof surface.
  • Weather-Resistant Spun Hood
  • Backward-Inclined Centrifugal Wheel
  • Downblast Roof Discharge
  • Gasketed Curb Mounting
Yêu cầu báo giá Duyệt các sản phẩm

Giới thiệu Sản phẩm

The centrifugal roof exhaust fan mounts above a roof opening and draws building air upward through a curb into a backward-inclined wheel. A spun weather hood shields the motor, drive and wheel from rain, while the surrounding windband directs discharge downward toward the roof. The removable hood, ventilated motor compartment and prepunched curb cap provide an accessible outdoor exhaust solution for cleanroom support spaces and general clean-air ventilation.

Các tính năng chính

A spun aluminum hood combines low weight with corrosion resistance and sheds rain away from internal components.

The backward-inclined centrifugal wheel develops greater static pressure than a simple roof propeller for longer duct systems.

Outside cooling air circulates around the motor compartment instead of relying only on the warm exhaust stream.

A square curb cap with mounting holes and perimeter gasket creates a repeatable sealed connection to the roof curb.

Các mối quan tâm về sản phẩm của khách hàng

Roof exhaust equipment must resist weather, keep water out of the duct opening and provide enough pressure for the vertical riser below it.

Rain entering the roof opening can wet insulation and contaminate the connected exhaust duct.The overlapping spun hood, windband and raised curb position shield the inlet from direct precipitation.
A roof propeller loses airflow when a filter, damper or long riser adds resistance.The centrifugal wheel provides a broader pressure capability for ducted exhaust than a low-pressure propeller arrangement.
Outdoor motors overheat when hot exhaust air recirculates through the motor compartment.A separated ventilated motor cover draws cooling air from outside the exhaust path.
Inspecting belts and bearings requires lifting a heavy one-piece fan from the roof curb.The removable or hinged weather hood exposes the drive assembly while the curb base and duct connection remain in place.

Các ứng dụng điển hình

Cleanroom gowning and support-area exhaustLaboratory general clean-air ventilationPharmaceutical warehouse and utility-room exhaustMechanical-room heat removalCommercial clean-process roof extraction

Thông số kỹ thuật

Representative construction ranges for a curb-mounted centrifugal downblast roof exhaust fan are provided below.

Vật liệu lõiGalvanized steel curb base with a backward-inclined steel wheel and corrosion-resistant spun aluminum weather hood
Độ dày bảng điều khiển1.2-2.5 mm typical hood, windband and curb-cap material thickness
Chiều rộng hiệu quả600-2200 mm nominal roof curb and fan base width
Chiều dài tối đaUp to 2600 mm overall curb-base length according to fan size
Thép đối mặt với độ dày1.2-2.5 mm galvanized steel curb cap, motor plate and internal support sheet
Mật độ lõiApproximately 7800-7900 kg/m³ for the galvanized steel base and wheel components
Độ dẫn nhiệtApproximately 45-55 W/(m·K) for the galvanized steel structural components
Kết thúc bề mặtNatural spun aluminum hood with dark green powder-coated base and galvanized internal support surfaces
Loại khớp nốiBolted square curb cap with perimeter gasket, prepunched mounting holes and removable hood fasteners
Tùy chỉnhCó sẵn dựa trên ứng dụng dự định và môi trường hoạt động.

Các tùy chọn có sẵn

Direct-drive or belt-drive centrifugal wheelHinged base, motorized damper and extended roof curbBirdscreen, disconnect switch and weatherproof wiring channelCoastal-duty coating and stainless exterior fasteners

Planning a Centrifugal Roof Exhaust Fan specification?

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