This picture below shows the
inside of a modified Vamp 70 Vacuum Cleaner.
The white rubber strip in the area
around the holes acts as a seal when the top is in place. It is to stop the
forced air stream from escaping back down to the floor in the wrong place.
The air stream must be
returned to the front of the rotary brush so that it will be taken up into the
rotation of the brush and through the pile of the carpet. It is then drawn into
the air intake to the dust container before being sucked back into the fan. All
of this takes place independent of the ambient air pressure.
In the production model more
space would be given between the holes and the front of the cleaner. This would
improve performance by allowing the air to expand more at this point just before
being returned to the brush housing.
The small dedicated brush
motor shown in the centre of the picture has been fitted to make the action of
the rotary brush independent of the fan motor.
This has the advantage that
when reducing the power supplying the fan down very low typically less than 100
Watt it will not be slowed down by the drag of the brush.
The energy saved in this way
more than compensates for the power drawn by the extra small brush motor.
All of my recent tests have
indicated that the air recycling cleaner is now more efficient
type of cleaner at present on the market.
A truly EcoCleaner.
1/ More Efficient. Using only 10% of the power of the Vacuum
2/ Healthier. No air is returned to the room to blow allergens
3/ Lighter in weight due to smaller motors.
5/ Should cost no more to manufacture.
6/ Very Eco friendly.