Air multiplier fan
An air multiplier fans blow air from an oval opening without exposed blades, the vanes are hidden within the frame. Air movement is created within the frame, directed and focussed to the central void (or toroid), to create the cooling effect through air flow. Unlike an axial fan, which creates intermittent air flow, pressure and some noise as the blades turn, an air multiplier fan separates the blades from the air flow thus creating a continual constant air flow and less noise. It is also called a bladeless air fan.
The first patent for a bladeless desk fan is recorded as being by the Japanese firm Tokyo Shibaura Electric in 1981 (now known as Toshiba). In 2009 James Dyson, improved on the original design by benefitting from what is known as the Coanda effect, where air tends to flows along the curvature of a surface rather than separating from it, this was named and patented as the air-multiplier bladeless fan.
[edit] Related articles on Designing Buildings
- Air conditioning.
- Air handling unit.
- Building management systems.
- Building services
- Building services engineer.
- Chilled water fan coil system vs refrigerant based system
- Constant air volume CAV
- Evaluation of cooling effects: outdoor watermist fan
- Fan.
- Fan coil refurbishment for improved operational efficiency
- Fan coil unit
- Fan coils
- Fan convector
- Fan heater
- How do I know what capacity fan coil I need?
- How does a chilled water fan coil unit work?
- HVAC
- Intermittent extract fan
- Types of pump.
- Variable air volume VAV
- Ventilation
- What are the different types of fan coil units?
Featured articles and news
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.