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Fan
The fan moves the air through the heater, drum and
exhaust ducting.
It is a centrifugal fan, which produces relatively high flow
for its size and speed.
The fan is mounted onto the motor shaft.
The key benefit of our system is that we are able to run
the fan faster than conventional machines (we can run at
2300rpm whereas they can only run at ~1700rpm).
Running at 2300rpm means extra airflow. This is up to
10% more airflow than our competitors.
AeroSmart™ rotates the drum in both directions. We have designed the fan to produce
maximum airflow when the drum is rotating in the closed direction. It travels in this
direction for 4 minutes.
In the open direction it has half the airflow. This is why when we reverse, we only use
half the heat, as we don’t want to damage clothes in the drum. It travels in this direction
for 40 seconds.
More Airflow = More Power.
This means we don’t have to dry with high temperatures. We can dry with lower
temperatures for better clothes care and still achieve the same cycle time as
conventional dryers.
In an average installation we would expect the airflow out the exhaust to be 230 cubic
feet per minute (60 liters per second). An average installation for competitors is around
106 cubic feet per minute (50 liters per second).
The length of the ducting, the number of corners and the type of ducting affects the rate
of airflow. Crushed ducting behind the dryer or blocked ducting (if the ducting is old) can
also affect airflow.
What will happen if the airflow is blocked?
Thermostats are fitted to the heater housing which limit the temperature going into the
clothes load in the drum. If the airflow is heavily restricted from the exhaust duct,
possibly by an over full lint collector or a blocked or kinked exhaust duct, it will cause the
heater to rise in temperature and the thermostats will switch off the heat. After the
heater cools down the thermostat will again switch the heater on. If the airflow
restriction remains the Dryer will continue to switch off and on the heat and take a long
time to dry the load. The Sensor Module monitors the activity of the thermostat and
when a continuous switching on and off occurs it sets the air flow restriction user
warning until the drying cycle is complete. It is up to the user to clear the restriction.
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