Specifications

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13.4 Working of ceiling fan:
The working of fan is that they do not actually reduce the temperature of the room but due
the circulation and wind motion they result in surface cooling and give a breezy feeling. Electricity
is used to empower the fan motors and due to the scientific design of fan blades we get the
breeze, a man made phenomenon, similar to wind creation. The fan blades create a draught
and the warmer air goes up. When that air is pushed down with a force, we get better air
circulation. There is set parameters that need to be taken into consideration before you install
the ceiling fan, care should be taken that it is not too close to the ceiling otherwise the draft will
not be proper and should be at a safer distance from the reach of the people in the house.
Technical data for ceiling fan:
No. of Size of fan Speed Power Air delivery Area
Blades (mm) (rpm) consumption (m
3
/h) covered
(Watts) (m
2
)
3 900 400 60 145 8.5
1050 380 65 195 10.0
1200 330 65 220 14.0
1400 290 70 270 18.0
4 1200 330 65 220 14.0
13.5 Table Fan :
A propeller bladed fan having two or more blades is directly driven by an electric motor. It
may be a bracket mounted wall table fan, kitchen fan or a portable table fan. Four blades table
fans are also available to obtain more air delivery.
Parts of Table fan : The parts of the ceiling fan are shown in Fig.13.4 and 13.5. The key
components are the following;
Fig.13.4 - Internal parts of table fan
1. Rubber Feet
2. Regulator Choke
3. Capacitor
4. Blade Bush Fixing Screw
5. Spindle
6. Front Cover
7. Stator
8. Oscillator Knob
9. Back Cover
10. Vertical Spindle
11. Gear Box
12. Back Cover Fixing Screw
13. Bush Bearing
14. Link Fixing Screw
15. Switch
16. Pivot Pin
17. Crank Lever
18. Wire Guard
19. Bottom Cover