Mixed Flow Fans

Mixed Flow fans are an excellent choice for return air, supply, or general ventilation applications where low sound is critical. As compared to similarly sized tubular centrifugals and vane axials, Greenheck's mixed flow fan will be 5-20 dB quieter! In addition, the mixed flow wheel is extremely efficient and will cut down on operating expenses.

All sizes of the mixed flow are licensed to bear the AMCA Certified Sound (both inlet and outlet) and Air Performance seal, ensuring all data is proven and tested.

Additional features of the QEI include

• Universal Mounting System that allows the unit to be field rotated at the job site
• Compact design with standard slip-fit duct connections for ease of installation
• Available UL listings include Power Ventilators (UL-705), Power Ventilators for Smoke Control Systems, and Power Ventilators for Restaurant Exhaust Applications (UL-762).
• Continuously welded housing with a standard powder paint finish suitable for indoor or outdoor applications
• A complete three plane vibration test of all assembled fans prior to shipment
  

Model QEI

• Belt drive construction with motor out of the airstream
• Air Handling Quality bearings selected with a minimum life in excess of L(10) 80,000 hours at the maximum operating speed
• Performance capacities from 2,000 to 95,000 cfm (3,400 - 161,000 m3/hr) and pressures up to 8.5 in. wg. (2120 Pa)
  

Model QEID

• Direct drive construction eliminates belts, pulleys, and shaft bearing maintenance
• QEID design is more compact for space critical application
• Partial wheel widths allow for wide performance capacities ranging from 1,000 to 96,000 cfm (1,700 - 163,000 m3/hr) and pressures up to 9.5 in. w.g. (2370PA)

To see and hear the Mixed Flow in Action, Click Here

How the Mixed Flow Works (25k)
New Sound Vault Housing (49k)
Sound Vault Specification

Sure-Aire

If your application requires real time flow measurement, the Sure-Aire is a great accessory to include.  The Sure-Aire provides the benefits of traditional flow probes which are placed in the airstream, but with the Sure-Aire's non-invasive design, fan performance is not affected.  For more information about the Sure-Aire system, including a head-to-head comparison video, click here.

Greenheck's Total Fan Package

Greenheck offers a complete fan package including your choice of

• Motors and Drives
• Protective Coatings
• Safety Guards and Motor Covers

The advantages of buying a complete fan package from Greenheck include proper selection, design, testing, and manufacturing.

Downloadable Greenheck Literature
Viewable with the Adobe Acrobat Reader
(Click here for more information or to download the Acrobat reader)

Catalog:

Mixed Flow Fans from Model QEI & QEID (3697k)

Sure-Aire Flow Monitoring Station (417k)

Marine Products - Dampers, Louvers and Fans (899k)

Dampers for Centrifugal Fans (622k)

Performance Supplement:

QEID Performance Supplement (1,064k)

Specifications:

Mixed Flow Inline Belt Drive, QEI (1238k)

Mixed Flow Inline Direct Drive, QEID (1236k)

Sure-Aire Flow Monitoring Station (1242k)

Installation, Operation and Maintenance Manuals:

Tubular Centrifugal Fan and Mixed Flow Fan Manual (#459968) (191k)