توضیحات

Introduction

A mushroom exhaust fan is a type of ventilation fan installed on the roof of a building that removes polluted air, smoke, odors, moisture, or heat by creating negative pressure.
Due to its mushroom-like shape, it is also known as a Roof Mushroom Fan or Dome Exhaust Fan.

These fans are widely used for exhausting air from industrial halls, commercial kitchens, warehouses, poultry farms, greenhouses, storage facilities, and parking garages.

Main Components of a Mushroom Exhaust Fan

1. Mushroom or Dome Cap
2. Axial or Centrifugal Impeller
3. Single-phase or Three-phase Electric Motor
4. Body, Base, and Frame
5. Weatherproof Motor Cover
6. Vibration Isolators
7. Safety Mesh or Protective Grid
8. Base Plate for Roof Installation

Technical Specifications

1) Air Flow Rate

•  Units: CFM or m³/h
• Typical range: 1,000 to 50,000 CFM (equivalent to 2,000 to 90,000 m³/h

2) Static Pressure

• Axial type: 50 to 150 Pa
• Centrifugal type: 150 to 400 Pa

3) Impeller Type

• Cast aluminum impeller (anti-corrosion)
• Reinforced polyamide (FRP) impeller
• Galvanized steel impeller
• Number of blades: 4, 6, or 7
• Blade profile type : Backward – Airfoil – Axial

4) Motor Specifications

• Single-phase or three-phase motor
• Motor power: 0.25 to 7.5 kW
•  Insulation class: F
• Protection rating: IP54 or IP55
• Speed: 900 – 2800 RPM

5) Body & Hood Material

• Hot-dip galvanized steel sheet
• Aluminum
• Stainless steel (304) – for kitchens or corrosive environments
• Sheet thickness: 1 to 2 mm

6) Noise Level

• Typical range: 60 to 80 dB, depending on type and speed

7) Installation Type

• Installation on roof curb
• Direct installation on base plate
•  Optional rubber vibration isolators

8) Optional Protective Features

• Rainproof and UV-resistant cover
• Backdraft damper
• Temperature or smoke sensor
• VFD (Inverter) for speed control
• Automatic shutdown system