Electrolux Group Patents

The invention relates to a laundry treatment machine, in particular washer dryer (2). A control unit (68) is configured to control a drying cycle for drying laundry received in a drum (58) by: providing, from a liquid supply arrangement (84) to a liquid connection line (94), a liquid refill, corresponding to an amount of liquid sufficient to provide an air trap function of a siphon device (102), evaluating based on the pressure signal received from the pressure sensor (74) during a time period, if a pressure signal event is present, determining a lapsed time since the liquid refill, comparing the lapsed time since the liquid refill with a refill time threshold (THR_R), and if the pressure signal event is present, and the lapsed time is below the refill time threshold (THR_R), performing one or more actions, comprising: pausing or stopping the drying cycle, providing information that the filter unit (26) is not properly arranged in the air circulation arrangement, and/or pausing the evaluation of the pressure signal. The invention further relates to a method for operating a laundry treatment machine, in particular a washer dryer (2), during a drying cycle for drying laundry.

The invention provides a food thermometer arrangement comprising a temperature probe (P) having a temperature sensor (T) adapted to provide a temperature signal (Temp) and adapted to be positioned in thermal contact with a food (F), and a transmission element (T) configured to transmit a temperature signal and/or control signals to a food preparation apparatus (H). The food thermometer arrangement further comprises a trigger element (B) adapted to generate a trigger signal (b) and a control module (C) configured to receive the temperature signal (Temp) from the temperature sensor (T) and the trigger signal from the trigger element (B), wherein the control module (C) is configured to generate a temperature control signal (Temp/Sig) in dependency of the temperature signal (Temp) and the trigger signal (b).

The invention relates to a laundry treatment machine, in particular washer dryer (2), comprising a control unit (68) configured to control a drying cycle for drying laundry received in a drum (58) by: determining a pressure signal variation (V) of a pressure signal during a time period, and if the pressure signal variation (V) during the time period is above a pressure signal variation threshold (THR_V), providing, from a liquid supply arrangement (84) to a liquid connection line (94), a liquid refill. The invention further relates to a method for operating a laundry treatment machine, in particular a washer dryer (2), during a drying cycle for drying laundry.

Domestic cooking oven, in particular without an electronic control device and/or without a microprocessor for controlling operation of the oven, comprising: - at least one oven cavity; - at least one first resistive heating element (HE1) and at least one second resistive heating element (HE2) for heating up the oven cavity, wherein the first resistive heating element (HE1) and the second resistive heating element (HE2) are interconnected in series; - at least one first fan (F1); - at least one second fan (F2) for cooling down the oven cavity; wherein the second resistive heating element (HE2), the first fan (F1) and the second fan (F2) are configured to be connectable or connected in parallel to each other such that the first and second resistive heating elements (HE1, HE2) form a voltage divider for a parallel circuit consisting of the first fan (F1) and the second fan (F2).

The invention refers to a household microwave oven (1), comprising an oven cavity (4) for receiving cooking goods, a magnetron (6) for emitting microwaves, a waveguide (8) for guiding the microwaves from the magnetron (6) to the oven cavity (4), and a directional coupler (30) aligned at the waveguide (8) in a way to detect an amount of microwaves travelling through the waveguide (8) and to emit a coupler signal (C) based on the detection of the microwaves. Further, the microwave oven (1) comprises a controller (10) connected with the directional coupler (30) for signal transmission of the coupler signal (C) and indirectly with the magnetron (6) for operational control, wherein the controller (10) is configured to derive, during an operational state of the microwave oven (1), from the coupler signal (C) information about microwaves travelling through the waveguide (8) and to perform controlling of the operational state of the microwave oven (1) based on that information.

An induction generator (2) is configured for driving an induction circuit (4), in particular for driving an induction coil of an induction hob (30). The induction generator (2) comprises: a power supply unit (8) configured to provide an input voltage (Vi) with respect to a common voltage (Vc); a driving unit (10) configured to provide a first and a second transistor driving voltage (Vg1, Vg2); a half-bridge arrangement (12) comprising a first transistor and a second transistor (14, 16) connected in series at a middle node (22), wherein the serially connected first and second transistors (14, 16) are connected between the input voltage (Vi) and the common voltage (Vc), wherein the first transistor driving voltage (Vg1) is applied to the gate of the first transistor (14), and wherein the second transistor driving voltage (Vg2) is applied to the gate of the second transistor (16); a resonance circuit (4) comprising an induction coil element (6) being electrically connected at one end to the middle node (22) and being configured to emit an electromagnetic field when in operation; a control unit (20) having an output configured to supply a control signal to the driving unit (10) and having an input electrically connected to the middle node (22) configured for sensing the middle voltage (Vm) at the middle node. The control unit (20) is configured to apply the control signal at a setpoint frequency to the driving unit (10) such that via the first and second transistor driving voltages (Vg1, Vg2) a temporal switching sequence is implemented where the first transistor (14) is switched on and off and the second transistor (16) is switched on and off with a delay period (To) between switching off the first transistor (14) and switching on the second transistor (16). The control unit is further configured to detect the middle voltage (Vm) and/or the complimentary middle voltage (Vm*); and to evaluate the amplitude of the middle voltage (Vm) or the temporal behavior of the middle voltage (Vm) in relation to the switching off of the first transistor (14) and/or in relation to the switching on of the second transistor (16), and/or to evaluate the amplitude of the complimentary middle voltage (Vm*) or the temporal behavior of the complimentary middle voltage (Vm*) in relation to the switching off of the second transistor (16) and/or in relation to the switching on of the first transistor (14). The control unit is further configured to increase or to decrease or to maintain the setpoint frequency of the switching sequence being applied via the control signal in dependency of the evaluation. Alternatively or additionally the control unit is further configured to increase or to decrease or to maintain an on-time ratio (Ta/Tb or Tb/Ta), where within a switching sequence Ta is the duration of switching on the first transistor (14) and Tb is the duration of switching on the second transistor (16).

The invention refers to a microwave oven (1), comprising an oven cavity (4) for receiving cooking goods, a magnetron (6) for emitting microwaves, a waveguide (8) for guiding the microwaves from the magnetron (6) to the oven cavity (4), the waveguide (8) having a deformable portion (20), and an actuation device (24) comprising an actuator (26) connected to the deformable portion (20) for transmission of a deformation force to the deformable portion (20). The deformable portion (20) comprises a metallic surface that is closed with respect for microwaves.

Convection cooking oven comprising: - a muffle (10) having muffle side walls (60), a muffle top wall, a muffle bottom wall and a muffle rear wall (50, 500, 600) forming a cavity (20); - at least one fan cover (700, 800, 900, 600, 300) being arranged inside of the cavity (20) and in front of the muffle rear wall (50, 500, 600), separating the cavity (20) into a cooking chamber and a fan chamber (7011, 8011, 9011, 6011, 311); - at least one fan impeller (80) being arranged inside of the cavity (20) and in the fan chamber (7011, 8011, 9011) for generating an air flow (F<Fan>) in the fan chamber (7011, 8011, 9011); - wherein the fan chamber (7011, 8011, 9011, 6011, 311) is at least partially enclosed by the muffle rear wall (50, 500, 600) and the fan cover (700, 800, 900, 600, 300) and wherein the muffle rear wall (50, 500, 600) and/or the fan cover (700, 800, 900, 600, 300) comprise air guiding structures (7050,...,361; 7051,...,306; 7050a, .., 303b; 7060a, ..., 304b); - wherein the air guiding structures (7050,...,361; 7051,...,306; 7050a, .., 303b; 7060a, ..., 304b) are configured to guide a part (F<CL>, F<CR>) of the air flow (F<Fan>) that is generated by the fan impeller (80) in the fan chamber (7011, 8011, 9011, 6011, 311) out of the fan chamber (7011, 8011, 9011, 6011, 311) and into the cooking chamber; and wherein the air guiding structures (7050,...,361; 7051,...,306; 7050a, .., 303b; 7060a, ..., 304b) guide the part (F<CL>, F<CR>) of the air flow (F<Fan>) such that at least one sub-part (F<OutL>, F<OutR>) of the part (F<CL>, F<CR>) of the air flow (F<Fan>) is accelerated on its way from the fan impeller (80) to the cooking chamber.

The invention relates a laundry treating appliance (1) comprising a rotatable container (4) apt to receive laundry to be treated, the container (4) being rotatable about a rotation axis (X) and comprising a side wall (6) that extends around the rotation axis (X) and comprises an inner surface (7) which delimits a laundry receiving space (9). There is provided at least one lifter (20; 120; 220; 320; 420; 520) having a base portion (22) resting on said inner surface (7), said lifter (20; 120; 220; 320; 420; 520) extending from said inner surface (7) of said side wall (6) towards said rotation axis (X). The lifter (20; 120; 220; 320; 420; 520) is provided with an article holder clamp device (30; 130; 230; 330; 430; 530) having a clamp region (32; 132; 232; 332; 432) comprising a first gripping surface (34) and a second gripping surface (36) to hold an article (A) therebetween. The clamp device (30; 130; 230; 330; 430; 530) comprising at least one movable part (40; 140; 240; 340; 440, 480) comprising the first gripping surface (34), wherein each of said at least one movable part (40; 140; 240; 340; 440, 480) is movable relative to the rotatable container (4) between a closed clamp position to hold the article (A) and an open clamp position to release the article (A). The clamp device (30; 130; 230; 330; 430; 530) comprises an actuating device (50; 150; 250; 350; 450) that is operable to move said at least one movable part (40; 140; 240; 340; 440, 480) between the closed clamp position and the open clamp position. The at least one movable part (40; 140; 240; 340; 440, 480) is configured to slidingly move along a sliding axis (S; S'; S"; S‴) between the closed clamp position and the open clamp position.

An odor filter system comprises: a case (12) comprising an air inlet (14) and an air outlet (16), the case (12) housing an air flow channel (18) for directing a filter operation air flow (F) from the air inlet (14) to the air outlet (16), an active carbon AC-filter (20) arranged in the air flow channel, and a catalytic module (22) arranged in the case (12) for regenerating the AC-filter (20), the catalytic module (22) is a photocatalytic module (23) comprising a photocatalytic filter (24) and a light source (26) for illuminating the photocatalytic filter (24), wherein the photocatalytic module (23) is arranged upstream from the AC-filter (20) in the air flow channel (18) and is preferably a PECO module.