Domestic laundry drying appliance has sensors to monitor the air flow temps to vary the power supply to the air heater to control its heating action

摘要

The system monitors the drying air stream flow, in a domestic laundry drying appliance, with an air heater (4). The temp. changes are registered by sensors (5,6) at least at a point after the heater (4) in the flow direction. The heater (4) action is varied by adjustments to the heating power supply, according to the temp. readings at least at one sensor (5,6). The difference between the time points where the process air temp. is measured at the first (5) and second (6) sensors is registered and used as a measure for the air flow speed.