Electrolux Home Products Corporation N.v.

Electrolux Appliances Aktiebolag

Massimo Viero

Daniele Da Riol

Andrea Contarini

Terenzio Girotto

A laundry machine () adapted to dry laundry by means of a flow of drying air has a machine cabinet () for accommodating components necessary for the operation of the laundry machine (). Inside the cabinet is a laundry treatment chamber () adapted to contain the laundry to be dried. A cabinet top element () incorporated at least part of a drying air circuit in fluid communication with the laundry treating chamber through a drying air inlet opening () and through a drying air outlet opening () formed in the cabinet top element The cabinet top element has a bottom base element () and a top cover () and, defined in an interspace between the base element and the top cover, a drying air path for the flow of drying air between said drying air inlet opening () and said drying air outlet opening (). The drying air path includes a moisture condensing arrangement (). The drying air inlet opening () is formed in a wall () extending within the interspace between the base element () of the top element () and the top cover () thereof.

Laundry drying machine

An appliance for drying laundry () comprises an appliance cabinet (), a laundry treatment chamber () inside the cabinet, and a drying air recirculation path () for causing recirculation of the drying air into/out from the laundry treatment chamber. The drying air recirculation path is at least partly external to the laundry treatment chamber. A drying air moisture condensing and heating system () located in the drying air recirculation path for dehydrating the moisture-laden drying air leaving the laundry treatment chamber and heating the dehydrated drying air before it re-enters into the laundry treatment chamber. The drying air moisture condensing and heating system comprises a first heat exchanger () and a second heat exchanger () of a heat pump (), and further comprising a drying air propeller () inside the drying air recirculation path and a Joule-effect drying air heater (), downstream the second heat exchanger, energizable for contributing to the heating of the drying air. The appliance includes a user interface () comprising a laundry treatment cycle selector () operable by a user for selecting a laundry treatment cycle, and a control unit () adapted to control the machine operation. The user interface comprises a command input means () operable by the user for imparting to the appliance an energization command to energize the Joule-effect heater. During the execution of the laundry treatment cycle selected by the user, the control unit causes the selective energization of the Joule-effect drying air heater based on the energization command imparted by the user.

Appliance for drying laundry

An appliance for drying laundry () includes a drying-air moisture-condensing system comprising a heat pump system () with a variable-output compressor () having a compression mechanism and an electric motor for driving the compression mechanism. A controller () is provided to vary the rotational speed of the electric motor so as to adjust the rotational speed of the compression mechanism in order to maintain constant a power absorbed by the compressor during at least a portion of a drying cycle.

An appliance for drying laundry includes a drying-air moisture-condensing system including a heat pump system with a variable-output compressor, and at least one drying air variable-speed fan for promoting the recirculation of the drying air. The appliance is adapted to perform at least one laundry drying cycle in: at least a first drying mode wherein 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 the fan is driven to a first fan mode having a speed course, and at least a second drying mode wherein 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 and the fan is driven to a second fan mode having a speed course. For at least a portion of the drying cycle, a compressor power consumption and/or a compressor rotational speed and/or a frequency of the supply current/voltage of the compressor of the second compressor mode is/are higher than the one/s of the first compressor mode and the speed of the second fan mode is higher than the speed of the first fan mode.

An Appliance for drying laundry () includes a drying-air moisture-condensing system () comprising a heat pump system with a first heat exchanger () for cooling the drying air and a second heat exchanger () for re-heating said drying air, and a variable-output compressor (). At least one Joule-effect heater () 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.

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Pianezze, Italy

Massimo Viero