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A Seminar Topic On
BLADELESS FAN
Done By,
Vishnu Vijayan.V.G.
RollNo: 15093460
S7 ME
SIST
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What is a Fan?
Fan is a machine for producing flow within a
fluid typically a gas such as air.
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Bladed Fan
A bladed fan consists of a rotating arrangement
of blades which acts on the air.
Fans are powered by electric motors, but other
sources of power may be used.
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Disadvantages of Bladed Fans
The blades on conventional fans causeunpleasant buffeting
because they chop the airbefore it hits you.
High Noise level Low Efficiency
High Power Consumption
Safety Concerns
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BLADELESS FAN
Bladeless fan doesnt
need any blade tomake a speedy flow of
air. The principle of
operation is very
simple.
This fan can flow airvery smoothly without
chopping.
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PARTS
The upper part of the fan is a
ring. The lower part of the fan is
cylindrical and has a variable
speed control switch on it.
Small holes are provided
around the cylindrical
structure. These work as air
inlets and have much
importance in the operationof the fan
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What is a bladeless fan?
A bladeless fan works like a jet engine, sucking
air into a cyclone accelerator that amplifies it 15to 18 times
before blowing it out over an airfoil-
shaped ramp. As that air is blown out, more is sucked in
from
behind. With no blades, the air stream is smooth
and the contraption is easy to clean.
The fan runs on a modest 40-watt motor.
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MATERIAL AND PROPERTIES
The material used is Acrylonitrile Butadiene
Styrene usually known as ABS.
High Melting point
High strength , rigidity and toughness.
Good flow
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Working
It uses the technology of Air Multiplier by which itgenerates
smooth and uninterrupted airflowwithout unpleasant buffeting.
It works by sucking in air at the base, which isthen ejected at
a speed of 55mph through a tinyslit around the edge of the ring.
The air isexpelled out over an airfoil-shaped ramp.
This creates a high pressure area behind the
aerodynamically designed ring. Thus more air is pulled into
airstream, resulting
in approximately 15 times more the air sucked atbase.
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Working in 4 Simple Steps
Air is drawn in by an energy-efficient, brushlessmotor.
Air is accelerated through an annular aperture. Itpasses over
Aerodynamically designed ring,which channels its direction.
Air is induced behind the Air Multiplier fan and isdrawn into
the airflow, through a process knownas Inducement.
Air is Entrained: Air around the machine is alsodrawn into the
airflow, through a process knownas entrainment, amplifying it 15
times.
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Advandages Over Conventional
Low energy consumption.
No blades and are safe.
Uses Energy Efficient, higher lifetime brushlessmotor.
Ring can be adjusted to 90 degrees.
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More comfortable airflow without buffeting.
Easy to clean: no protective cover and leaves
to avoid demolition clean.
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THANK YOU
