Electrolux Home Products Corporation N.v.

Electrolux Appliances Aktiebolag

Francesco Cavarretta

Maurizio Del Pos

Daniele Favaro

Andrea Zattin

Nicola Reid

Maurizio Ugel

Alberto Bison

Massimiliano Vignocchi

Elena Pesavento

Sergio Pillot

Giuseppe Dreossi

Flavio Noviello

Roberto Ragogna

Giuseppe Rossi

Federico Del Maschio

Rudy Dal Molin

Filippo Bellomare

Davide Camata

Francesco Lucchini

Christian Montebello

Marco Rizzi

Massimo Castiglione

Roberto Mazzocco

Maura Pasquotti

Stefano Zandona′

Stefano Zandonà

Ferdinando Mancini

Alberto Passarini

Silvia Minetto

Stefano Zandona'

Fabio Gambarro

Gianni Gobbo

Alessandro Dalla Rosa

A laundry dryer including: a drum, a motor to rotate the drum, a casing supporting the drum and including a rear wall and a front wall, a basement having first, second, third and fourth quarters with the first and third quarters on one side of a plane perpendicular to the basement plane and parallel to the drum axis, and the second and fourth quarters on an opposite side of the plane, a process air conduit in fluid communication with the drum and including a basement process air conduit located in the basement, and a heat pump circuit including a compressor, and first and second heat exchangers. The first and second heat exchangers are in the basement process air conduit mainly within third and fourth quarters, and the motor and compressor are mainly in, respectively, in the first and second quarters.

Laundry dryer

A laundry dryer having a drum, a casing supporting the drum and including a basement defining a basement plane, a basement process air conduit located in the basement and extending within the basement for a given length and having a basement air conduit width, and a heat pump having a first heat exchanger where refrigerant is cooled off and the process air is heated up, and a second heat exchanger where refrigerant is heated up and the process air is cooled off. The first heat and second heat exchangers are in the basement process air conduit to perform heat exchange between said refrigerant flowing in said heat pump circuit and said process air. The width of the basement air conduit along a first portion of its extension in the basement is wider than 50% of the width of the basement.

A method is provided for controlling a drying cycle of a laundry dryer having a laundry drum and an air stream fan for circulating drying air through said laundry drum. The method includes the steps of: starting a drying cycle (); performing the drying cycle (); detecting an electric resistance and/or conductivity of the laundry during the drying cycle () for estimating a dryness level of the laundry; comparing the electric resistance and/or conductivity of the laundry with an end cycle condition (); and finishing the drying cycle (), if the end cycle condition () is fulfilled. The end cycle condition () depends on the rotation speed (S) of the laundry drum and/or on the rotation speed (S) of the air stream fan.

Method for controlling a drying cycle of a laundry dryer

A method for obtaining information about a load of articles to be cleaned in a dishwasher is provided. The method may include stopping a pump from pumping liquid through a spraying system of the dishwasher at a point of time; recording a pressure signal in a sump of the dishwasher from the point of time the pump was stopped; measuring a time period, said time period being measured from the point of time the pump stopped until the pressure signal is essentially stable; and comparing the time period with reference values for obtaining information about the load in the dishwasher. A corresponding dishwasher, computer program, and computer program product may be provided.

Dishwasher and method of operating the dishwasher

A laundry drying appliance having a cabinet, a treatment chamber inside the cabinet, a drying air recirculation path for conveying air into/out from the treatment chamber, a drying air propeller driven by a drying air propeller motor for causing the drying air to recirculate along the recirculation path, a drying air moisture condensing and heating system the drying air recirculation path for dehydrating the moisture-laden drying air leaving the treatment chamber and heating the dehydrated drying air before it re-enters into the treatment chamber, a laundry drying cycle selector for selecting one out of a number of default laundry drying cycles, a control unit to control the machine operation by operating the drying propeller at a default average speed corresponding to the selected drying cycle, and a command input operable by the user to change an average working speed of the drying air propeller.

Appliance for drying laundry with enhanced operation flexibility

A heat pump laundry dryer or a heat pump washing machine having a drying function, includes a control unit controlling an operation of the laundry treatment apparatus. A laundry treatment chamber treats laundry using process air circulated in a process air circuit. A heat pump system has a refrigerant loop in which refrigerant fluid is circulated through a first and a second heat exchanger. A compressor circulates the refrigerant fluid through the refrigerant loop, and a cooling fan unit cools the compressor. During the operation, a conveyance capacity of the cooling fan unit is varied. A detector unit detects an operation parameter indicating a state of at least one electronic board. A method of operation includes operating the cooling fan unit based upon the electronic board operation parameter, and controlling the compressor operation output based upon the electronic board operation parameter, wherein the compressor is a variable speed compressor.

Heat pump laundry treatment apparatus and method of operating a heat pump laundry treatment apparatus

A method is provided for controlling a laundry dryer including a fan motor () for driving a drying air stream fan () with a variable speed (vf) and a drum motor () for driving a laundry drum (). The method comprises the steps of setting a predetermined course for the speed (vd) of the drum motor (), maintaining the speed (vd) of the drum motor () according to the predetermined course for the speed (vd) of said drum motor (), detecting a power (Pd) or a current absorbed by the drum motor (), and controlling the speed (vf) of the fan motor () on the basis of the absorbed power (Pd) or current of the drum motor (). The speed (vf) of the fan motor () increases with a decreasing absorbed power (Pd) or current of the drum motor () and/or the speed (vf) of the fan motor () decreases with an increasing absorbed power (Pd) or current of the drum motor ().

Method for controlling a laundry dryer including a fan motor for driving a drying air stream fan with a variable speed

A laundry dryer is provided with a modular air recirculation subassembly fitted beneath a rotatable drum of the dryer. The subassembly has an air recirculation passage provided between an air supply passage and an air exhaust passage of the dryer. The air recirculation subassembly further has a flow directing flap at the juncture of the air inlet passage and the air recirculation passage to direct the recirculation air flow toward a heater and away from an inlet end of the air supply passage. The air recirculation subassembly may include a filter positioned across the air recirculation passage upstream of the heater, which filter is removable through the air exhaust passage. The subassembly may further include a heat exchanger to transfer heat from the warmer air exiting the exhaust passage to the cooler air entering the air supply passage, and a recirculation air flow regulating flap.

Dryer with air recirculation/heat exchange subassembly

A method is provided for operating a laundry dryer having a rotatable drum for accommodating clothes to be dried and an apparatus for circulating drying air through the drum. The method comprises the steps of performing a drying cycle selected by a user, wherein the drying cycle comprises predetermined drum movements over time depending on the cycle selected, detecting values indicative of the temperature of the drying air exiting the drum, based on said detected values, determining that the clothes inside the drum are in tangling conditions and starting an untangling operation for untying the clothes inside the drum. The untangling operation comprises modification of the predetermined drum movements. The modification comprises at least one of the following: stopping the rotation of the drum, reversing the rotation of the drum, modifying the speed of rotation of the drum, at the end of the untangling operation, either resuming the predetermined drum movements associated to the drying cycle that was running before starting the untangling operation, or performing drum movements over time different from the predetermined drum movements associated to the drying cycle that was running before starting the untangling operation.

Method for operating a tumble dryer

A method is provided for controlling a laundry dryer including a laundry drum () with a variable drum rotation speed (vd) and a drying air stream fan () with a variable fan rotation speed (vf). The method includes the steps of setting a course of the drum rotation speed (vd) or a course of a drum motor power (Pd) of the laundry drum (), and setting a fan rotation speed (vf) and/or a fan motor power (Pf) of the drying air stream fan () on the basis of the drum rotation speed (vd) and/or the drum motor power (Pd) of the laundry drum (). The fan rotation speed (vf) and/or the fan motor power (Pf) of the drying air stream fan () is decreased with an increasing drum rotation speed (vd) and/or increasing drum motor power (Pd) of the laundry drum (). The fan rotation speed (vf) and/or the fan motor power (Pf) of the drying air stream fan () is increased with a decreasing drum rotation speed (vd) and/or decreasing drum motor power (Pd) of the laundry drum ().

Controlling a laundry dryer with a variable drum rotation speed and a variable fan rotation speed

A laundry treatment apparatus, in particular a dryer () or washing machine having a drying function, includes a cabinet having a front wall, a rear wall, side walls and a base section. The base section has an internal side facing the interior of the cabinet and an external side exposed to the outside of the cabinet. A laundry storing chamber for treating laundry using process air (A), a process air loop for circulating the process air through the laundry storing chamber, and a heat pump system for dehumidifying and heating the process air are also provided. The heat pump system has a refrigerant loop comprising: a first heat exchanger () for heating a refrigerant and cooling the process air (A), a second heat exchanger () for cooling the refrigerant and heating the process air, a refrigerant expansion device, a compressor, and an auxiliary heat exchanger (). The auxiliary heat exchanger () is arranged at the external side of the base section.

Laundry treatment apparatus with heat pump

Growing community of inventors

Pordenone, Italy

Francesco Cavarretta