Electrolux Patente

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The present invention relates to a laundry dryer with a heat pump system. The heat pump system comprises a closed refrigerant circuit (10) for a refrigerant and a drying air circuit (12) for drying air. The refrigerant circuit (10) includes a compressor (14) and lamination means (18). The air stream circuit (12) includes a laundry drum (52) and at least one fan (52). The refrigerant circuit (10) and the air stream circuit (12) are thermally coupled by a first heat exchanger (16) for heating up the air stream and cooling down the refrigerant and a second heat exchanger for cooling down the air stream and heating up the refrigerant (20). The refrigerant circuit (10) comprises a low pressure side (24) between the outlet of the lamination means (18) and the inlet of the compressor (14). The refrigerant circuit (10) comprises a high pressure side (26) between the outlet of the compressor (14) and the inlet of the lamination means (18). The low pressure side (24) and the high pressure side (26) are thermally coupled by at least one internal heat exchanger (22; 40, 42). The refrigerant circuit (10) includes at least one by-pass line (28; 38) for bypassing at least a part of the low pressure side (24) and/or high pressure side (26) of the internal heat exchanger (22; 40, 42),

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The invention relates to a laundry treatment apparatus, in particular to a dryer or washing machine having drying function, comprising: a laundry storing chamber for treating laundry using process air, a process air loop for circulating the process air through the laundry storing chamber, a motor (60) for driving the rotatably supported laundry storing chamber and/or for driving a process air blower (58) arranged in the process air loop, and a heat pump system for dehumidifying and heating the process air, the heat pump system having a refrigerant loop comprising: a first heat exchanger (46) for heating a refrigerant and cooling the process air, a second heat exchanger (48) for cooling the refrigerant and heating the process air, a refrigerant expansion device arranged in the refrigerant loop, and a compressor (62) arranged in the refrigerant loop, wherein the first and second heat exchangers (46, 48) are arranged in a process air duct section (50) of the process air loop which is located in a base section (42) of the apparatus. According to the invention the process air duct section (50) is arranged in a middle region (I) of the base section (42), a first region (II/III) of the base area of the base section (42) is at a first side of or with respect to the process air duct section (50), and a second region (III/II) of the base area of the base section (42) is at a second side of or with respect to the process air duct section (50), such that the process air duct section (50) is between the first and second region (II, III).

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Microwave oven cavity and Microwave oven The present application in particular is directed to a microwave oven cavity 1. In order to obtain uniform heating and excellent heating efficiency, at least one inner wall 4 comprises at least one Fresnel reflective element 7 adapted to reflect microwaves coupled into the cavity 1 from a microwave source 5.

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A method for detecting rotation of a dishwasher spray arm, wherein the method comprises: (a) detecting vibrations generated during operation of the dishwasher; (b) comparing the level of the detected vibrations with a predetermined threshold, and increasing a count value in dependency of whether the level of the detected vibrations exceeds the predetermined threshold; (c) comparing the count value that is obtained for a predetermined period of time with a predetermined target range; and (d) determining that there is a disturbance in the rotation of the spray arm, when the count value is outside the predetermined target range.

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The present invention relates to a laundry treating machine (1) comprising a casing (2) accommodating a laundry chamber suitable for receiving the laundry to be treated, a bottom part (16) comprising a basement (14) and a bottom closing element (7; 57; 77) applicable to the basement (14) in a side thereof (17) facing the floor where the machine (1) rests. The bottom closing element (7; 57; 77) comprises an air passage (12; 82, 83) allowing an air flow to pass therethrough. The bottom closing element (7; 57; 77) comprises a grid-like structure (40; 60; 85, 86) at least partially closing such air passage (12; 82, 83).

An appliance for drying laundry (100), comprising a drying-air moisture-condensing system comprising a heat pump system (215,220,225) with a first heat exchanger (215) for cooling the drying air and cause condensation of the moisture contained therein, and a second heat exchanger (220) for heating the de-moisturized drying air, and a variable-output compressor (210), and at least one Joule-effect heater (255) located downstream the heat pump heat exchangers for boosting the heating 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 Joule-effect 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 Joule-effect 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, the 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, wherein 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 of the compressor of the second compressor mode is/are higher than the one/s of the first compressor mode.

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The present invention relates to a control system for an electric motor (10) of a cooling fan. The control system is interconnected or interconnectable within an alternating current supply circuit (L1, N) of the electric motor (10). The control system is connected or connectable in series to the electric motor (10). The control system includes at least one negative temperature coefficient (NTC) thermistor (12), at least one first capacitor (14) arranged parallel to the negative temperature coefficient thermistor (12), and at least one second capacitor (16) arranged in series to the negative temperature coefficient resistor (12) and the first capacitor (14). Further, the present invention relates to a cooling system for a household appliance. Moreover, the present invention relates to a household appliance household appliance, in particular a cooking appliance.

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Laundry machine such as a washing machine or a washing machine with drying function, comprising: - a treatment container having a bottom section (5), wherein the bottom section (5) comprises or forms a sump (6), wherein the sump (6) has a bottom wall (14) and at least one first lateral wall (15); - at least one heating element (13) arranged at least partially within the sump (6) for heating up washing liquid being in the sump (6); - at least one support element (18) arranged at least partially within the sump (6), said support element (18) supports the at least one heating element (13) within the sump (6) and in a distance to the bottom wall (14) of the sump (6), characterized in that said support element (18) is spaced from the bottom wall (14) of the sump (6).