Patent ID: 6907680
Filing Date: 2005-06-21
Classification: D06F

Abstract:
1. A method for drying laundry, of the type which provides for the use of: an electric resistance, for heating the drying air at a substantially predetermined temperature, sensor means of the temperature of the drying air, switching means, for controlling the electric power supply to said resistance, the method providing for the comparison between the actual temperature of the drying air, detected by means of said sensor means, with a value being representative of said predetermined temperature, during at least a portion of the drying process, the result of said comparison is used for generating control signals of said switching means, so as to perform a temperature control of the proportional type, i.e. providing for the modulation of the heating power of said resistance during subsequent reference periods, said control being performed by switching operations of said switching means for controlling, within one same reference period, the ratio of the supply time of said resistance with respect to non-supply time of said resistance, wherein said control is performed by switching a first switch connected in series on the supply line to said resistance, and a second switch arranged in parallel to said switch on the supply line to said resistance.