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US 9,359,714 B2Granted
Appliance for drying laundry
AssigneeElectrolux Home Products, Inc.
InventorsAndrea Contarini, Massimo Viero
Life of this patent
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AssigneeElectrolux Home Products, Inc.
InventorsAndrea Contarini, Massimo Viero
Estimating the term…
An Appliance for drying laundry (100) includes a drying-air moisture-condensing system (215,220, 225) comprising a heat pump system with a first heat exchanger (215) for cooling the drying air and a second heat exchanger (220) for re-heating said drying air, and a variable-output compressor (210). At least one Joule-effect heater (255) is located downstream of the heat pump heat exchangers for boosting the heating of the drying air. The appliance can perform at least one drying cycle in: at least a first drying mode, wherein the heater is kept de-energized and the compressor is driven to a first compressor mode having a compressor power consumption course and/or a compressor rotational speed course and/or a frequency course of the supply current/voltage of the compressor motor, and at least a second drying mode, wherein the heater is kept energized for at least an initial portion of the drying cycle and thereafter it is kept de-energized, and the compressor is driven to a second compressor mode comprising a compressor power consumption course and/or a compressor rotational speed course and/or a frequency course of the supply current/voltage of the compressor motor. For at least a portion of the drying cycle after the electric heater has been de-energized, a compressor power consumption and/or a compressor rotational speed and/or a frequency of the supply current/voltage the compressor of the second compressor mode is/are higher than the one/s of the first compressor mode.
An appliance for drying laundry, comprising a drying-air moisture-condensing system comprising a heat pump system with a first heat exchanger for cooling the drying air and causing condensation of the moisture contained therein, and a second heat exchanger for heating the de-moisturized drying air, and a variable-output compressor, and at least one Joule-effect heater located downstream of the heat pump heat exchangers for boosting the heating of the drying air, wherein the appliance is adapted to perform at least one laundry drying cycle in:
A method of drying laundry in an appliance for drying laundry comprising a drying-air moisture-condensing system comprising a heat pump system with a first heat exchanger for cooling the drying air and cause condensation of the moisture contained therein, and a second heat exchanger for heating the de-moisturized drying air, and a variable-output compressor, and at least one Joule-effect heater located downstream the heat pump heat exchangers for boosting the heating of the drying air, the method comprising performing at least one laundry drying cycle in:
Dependencies are inferred from the claim text.