Electrolux Home Products Corporation N.v.

Electrolux Zanussi Elettrodomestici S.p.a.

Industrie Zanussi S.p.a.

Electrolux Zapussi Electrodomestici S.p.a.

Silvano Cimetta

Piero Babuin

Flavio Noviello

Ugo Favret

Mirko Gasparini

Marco Giovagnoni

Fabio Altinier

Fernando Russo

Carlo Urbanet

Simone Sacilotto

Luigi Arreghini

Giambattista Dottor

Fabio Noviello

Andrea Donadon

Giovanni Paruzzolo

Stefano Casagrande

Fabio Pellegrino

Clothes drying machine comprising a drum holding the clothes to be dried, a first fan adapted to blow a first flow of drying air through said drum, and possibly a condenser adapted to condense the moisture out of the drying air exiting said drum. The machine is provided with a drying program that includes a step involving an increase in the temperature of the air introduced in said drum, in which said temperature is increased to a value of at least 130&#xb0; C. and held there for a pre-set period of time, and said temperature increase step is provided in the initial portion of the drying program, when the moisture content of the clothes is not less than 20%.

Household clothes drying machine with clothes disinfection cycle

Household-type front loading and water-recirculating clothes washing machine adapted to automatically measure the weight of the dry clothes loaded in the machine for washing, also on the basis of the information on the type of clothes in said washload entered from the outside (user), in which the measurement of such weight of the washload is performed by measuring the amount of water that is absorbed by the clothes in the washload when this is soaked with water to a point at which it is in a dynamic saturation, i.e. steady-state condition. Said measurement of the amount of water absorbed in the clothes is obtained by subtracting the amount of water that is present in the machine, and that does not interact with the washload, from the total amount of water let into the wash tub. The weight of the load of clothes is finally calculated by processing and interpolating the amount of absorbed water and rectifying such value with an information on the properties of the clothes in the washload.

Household-type water-recirculating clothes washing machine with automatic control of the washload weight, and operating method thereof

Front-loading clothes washing machine including a washing tub, a rotating drum contained in the tub and provided with an access opening and a rear wall, and a plurality of internally hollow lifting ribs arranged inside the drum and provided internally with a respective partition wall. The partition wall is in the shape of a substantially planar quadrangle, a side of which coincides with the common side of the inclined walls of the lifting rib, while the opposite side lies on the inner surface of the drum in a roughly intermediate position between the walls. The partition wall divides the inner volume of the respective lifting rib into two chambers that do not communicate with each other, and each one of the inclined walls is provided with at least a first respective aperture and a plurality of respective perforations adapted to let the respective one of the chambers communicate with the inner volume of the drum.

Lifting ribs of the drum of a clothes washing machine

Household-type clothes drying machine provided with a rotating drum (), first means adapted to circulate a stream of drying air through said drum and comprising an appropriate inflow conduit and an outflow conduit for said air stream, second means () adapted to generate a gas or vapour stream, a first delivery pipe conduit () connecting said second means with an ejection arrangement located on the inner surface of the loading door of the drum, a second drain pipe conduit () adapted to collect the condensed moisture from said ejection arrangement and convey it into a collecting container; said ejection arrangement comprises a substantially sealed cell that is however provided with a first port () to enable the gas/vapour stream to flow in from said first delivery pipe conduit, a second port () to enable liquid and condensate to flow into said drain pipe conduit, and an ejection window () that opens into the interior of said drum and is adapted to eject said gas/vapour stream flowing in from said first delivery pipe conduit. Inside said cell there is provided a vertically extending wall and said first port is oriented towards said wall, which terminates with a free lower, edge projecting onto the bottom of said cell.

Clothes drying machine with improved vapour injection arrangement

Drain pump for clothes washing machines, comprising: an impeller having vanes () that are arranged on respective planes passing through the axis of said rotating shaft, said drain manifold being provided with a planar inner wall (), in which there is provided a hollow space or separating gap () between said vanes of the pump impeller and said planar inner wall of said drain manifold, in which there are arranged a plurality of planar members () provided integral with said impeller and arranged in respective planes extending parallel to the axis of said rotating shaft (). Said planar members have a height that is smaller than the height of said vanes, but greater than the largest radius of the central hub of said rotating shaft.

Drain pump

Household-type front loading and water-recirculating clothes washing machine adapted to automatically measure the nature of the dry clothes loaded in the machine for washing, in which the measurement of such weight of the washload is performed by measuring the amount of water that is absorbed by the clothes in the washload when this is soaked with water to a point at which it is in a dynamic saturation, i.e. steady-state condition. Said measurement of the amount of water absorbed in the clothes is obtained by subtracting the amount of water that is present in the machine, and that does not interact with the washload, from the total amount of water let into the wash tub. The nature of the load of clothes is finally calculated by processing and interpolating the amount of water that is released by said load with respect to the water previously absorbed, and comparing said data with corresponding data relevant to reference textiles, whose nature is known.

Household-type water-recirculating clothes washing machine with automatic measure of the washload type, and operating method thereof

Clothes washing machine comprising a washing tub, a drain pipe provided under said tub and connecting it with a drain pump chamber, said drain pipe comprising a central length and a final length oriented horizontally towards said drain pump chamber, a hydraulic impeller () provided within said drain pump chamber, wherein in correspondence to and below said final length there is arranged an auxiliary filtering chamber connected to said final length via a horizontal aperture provided in the bottom wall of said final length. Said horizontal aperture is situated at the beginning of said final length, as viewed in the direction of flow of the liquor being let off said tub. In a preferred manner, said auxiliary filtering chamber is provided with a bottom wall connected to said central length via a smoothly radiused union that is concave towards the interior of said central length.

Clothes washing machine with improved filter assembly

A washing aid dispenser for a washing machine comprises at least a compartment, which is adapted to contain washing aids and is provided with a first siphon having a pre-determined suction height and at least a second siphon having a higher suction height than the first siphon. The first and the second siphon are adapted to draw in and convey towards a washing tub of the machine layers of the washing aids mixed with water lying at different heights in the dispenser.

Washing aid dispenser and washing machine comprising said dispenser

Centrifugal pump, in particular drain pump for washing machines, comprising a casing () that defines a chamber () within which an impeller formed by a hub () and a disk () provided with blades () is capable of rotating. The impeller is provided with at least a slit () adapted to generate a negative pressure on the rear surface of the disk () during the rotation of said impeller. The solution is very simple and rational; it enables a clogging of the impeller, as it may be caused by the presence of foreign matters and bodies in the washing liquor, to be avoided. It also enables axial thrusts, as they occur during the rotation of the impeller, to be compensated for.

Centrifugal pump

The present invention relates to a clothes drying machine, or combined clothes washing and drying machine, comprising a drum () holding the clothes to be dried, a conduit () adapted to convey a flow of drying air into said drum and out thereof, a fan () adapted to blow a first flow of drying air through said said conduit, a heatin element () adapted to heat up the air in said conduit at a location upstream of said drum, a motor () adapted to selectively drive said drum rotatably. In the machine there is provided a means () for producing atomised moisture, said means being adapted to release a flow of said atomised moisture into said conduit according to selected times and modes.

Clothes drying machine with clothes smoothing ability

A monitoring arrangement for the filter of a washing machine is disclosed wherein the user is warned of the clogged filter when an actual clogging condition occurs. Control elements that are normally used in washing machines, such as an analog pressure switch (13) and an electronic control circuit (14), are utilized. The control parameter for detecting clogging is the variation of the water pressure before and after the priming of the drain pump (12) or the recirculator pump (17) of the machine.

Clothes washing machine with lint filter monitor

A clothes washing machine is provided with a wash tub and a perforated drum arranged therein. A recirculating pump pumps liquid contained in a conduit provided with a pressure switch in its lower portion, arranged under the tub, and directed again toward the interior of the drum. The machine is capable, at least in a rinse cycle, of filling a predetermined amount of water into the tub, to let the recirculating pump operate for a definite period of time so as to enable the water to be fully pumped into the drum. At the same time, the drum is caused to rotate at a low speed. A signal starting spin-extraction for a pre-defined period of time enables a lower water level to be restored in the tub. The initially filled-in water is let into the tub in such an amount that the upper edge of the liquid in the tub eventually remains constantly below the lower edge of the drum, such an alternate sequence of recirculation and spin-extraction phases being repeated several times.

Clothes washing machine with rinsing cycles using small amounts of water

A clothes washing machine includes a washing tub, a drum rotatably arranged within the tub and adapted to hold the washload, and a liquor recovery reservoir, separable from the structure of the machine. A liquor transfer conduit connects the lower portion of the washing tub with the inner volume of the reservoir, preferably through a first pump situated in the conduit. A second conduit connects the inner volume of the reservoir with the inner volume of the washing tub through a second pump. As a part of a rinsing phase, the machine is adapted to the rinsing liquor from the tub to the reservoir, spin the washload holding drum at a high revolution speed, empty the tub by draining the liquor extracted from the washload during the high-speed spinning of the drum or subsequently thereto, and transfer the liquor contained in the reservoir back into the tub.

Clothes washing machine with water recovery reservoir and improved

A clothes washing machine is provided with a tank (2) for the recovery of liquids and a transfer conduit (3) which, by way of a first pump (4) disposed in the conduit, connects the lower portion of the tub (1) to the tank. The lower volume of the tank is connected by way of a suitable conduit (6) and a second pump (7) to a nozzle (8) that discharges into the hydraulic circuit (9) that feeds containers (10) for substances for the washing operation. The machine has one or more of the following properties. The feed pump (7) for the hydraulic distributor (9) and the feed pump (12) for the condenser (11) are replaced by a single pump (17) and by a two-way directional control valve (18) which alternatively feeds respective conduits that feed into the hydraulic distributor and into the condenser. The discharge pump (20) and the transfer pump (4) are replaced by a single pump followed by a further directional control valve (21) which alternatively feeds the transfer conduit or the discharge.

Clothes washing machine with improved water recovery tank

A steam condensation device is provided in a dryer or combination washer/dryer for condensing hot water vapor carried by hot air used to dry laundry in the dryer or combination washer/dryer. The steam condensation device includes a vertically extending tubular casing, at least one condenser conduit extending vertically within and spaced from the casing so as to define an annular space therebetween, and a spiral wall disposed between respective internal and external surfaces of the at least one condenser conduit and the casing. The spiral wall extends spirally toward the lower end of the at least one condenser conduit so as to define a spiral conveying path alongside the external surface of the at least one condenser conduit. The condensation device is arranged so that hot air circulating through the interior of the rotating basket containing laundry in the machine passes through the interior of the at least one condensor conduit. Cold water is supplied onto the spiral wall whereas it is conveyed spirally alongside the external surface of the at least one condenser conduit so as to cool the same. Thus, water vapor contained in the hot air passing through the interior of the at least one condenser conduit is cooled and consequently condensed.

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Treviso, Italy

Silvano Cimetta