A signal processing device includes a coefficient updater configured to calculate a filter coefficient based on a reference signal, an error signal, and an update parameter to set the filter coefficient in a noise cancelling filter. A parameter adjuster adjusts the update parameter according to fluctuation of the reference signal produced from an output of a reference microphone.

A range hood for a microwave includes a range-hood mount and a pair of hood slides coupled to the range-hood mount. Each hood slide includes portions that are configured to move relative to the range-hood mount between a retracted position and an extended position. The range hood further includes an expandable hood extension coupled to the pair of slides and configured to move from a collapsed configuration, when the pair of slides are arranged in the retracted position, to an expanded configuration, when the pair of slides are in the extended position.

Methods and articles of manufacture are disclosed for more efficient ventilation of fumes and odor laden air from the kitchen. Flexible or three dimensionally moveable auxiliary ducts are used to further connect the kitchen's permanent/existing ventilation system to the pots and pans during the cooking or frying processes to suck the fume or odor laden air at the time it leaves the cooking container. In various embodiments the auxiliary ducts are permanently, semi-permanently, or detachably connected to the kitchen's existing ventilation system and/or to the pots and pans. In some embodiments the auxiliary ducts may have their own active suction component(s) and/or filter(s).

A cooktop may include: a main body having a top surface, a bottom surface, and a suction opening; at least one cooking area configured to accommodate a heating element proximate to the top surface; suction means in fluid communication with the suction opening and configured to draw in cooking fumes; a support element connected to the main body; and weight sensing means between the support element and the main body for sensing a weight of objects to be weighed. The support element may at least partially overlap the suction means. The suction means may include: a suction duct in fluid communication with the suction opening; and a housing in fluid communication with the suction duct and configured to receive filters for the cooking fumes. The weight sensing means may be at the suction duct and/or the housing. The suction opening may be on the top surface.

An air-circulator includes an housing with an air inlet, an air outlet opening, an odor filter, and an insertion opening for inserting the odor filter. The odor filter is assigned to the air outlet opening.

A single-phase asynchronous motor (1) for a suction assembly of an extractor hood (5) comprises a stator (13) wherein a rotor is driven into rotation, a driving shaft (15) carrying a rotor (16) being integral with the latter for sucking smokes and vapors from a cooktop placed below the hood (5) and for sending them towards an output (8) of the hood, said stator (13) comprising a plurality of stator core laminations (22) provided with sixteen slots (30) containing metal electrical windings wherein current flows so as to generate a magnetic flux suitable for causing the rotation of the rotor. The stator has an outer diameter (D2) greater than 80 mm, the number of the slots (30) being sixteen, such slots having a unit surface of at least 70 mm.sup.2.

Example embodiments of the described technology provide an exhaust hood for removing effluent plumes produced by cooking activity. The exhaust hood may comprise an exhaust fan operable to create a region of negative pressure beneath the exhaust hood for drawing air entraining the effluent plumes into the exhaust hood. The exhaust hood may also comprise one or more plenum chambers in fluid communication with the exhaust fan. The exhaust hood may also comprise one or more orifices in fluid communication with the one or more plenum chambers, the orifices located along a front edge of the exhaust hood. The exhaust hood may also comprise a filter for cleaning the air drawn into the exhaust hood such that air entraining the effluent plumes drawn into the exhaust hood by the exhaust fan is drawn through the filter to yield cleaned air. The exhaust hood may deliver at least a portion of the cleaned air into the one or more plenum chambers. The orifices may be configured to eject the portion of the cleaned air as one or more jets arranged to provide an air curtain.

A modular hob system includes a control device for controlling all components of the hob system.

A gas cooker includes a housing delimiting an upper and a lower compartment divided by a plate and communicating through slits formed in the plate; a hob having a plurality of burners; an oven housed in the lower compartment and having a front opening, a pivoting door selectively closing the lower compartment, and a grill device; a front panel having controls elements connected to the burners and the oven; and an exhaust path for fumes and combustion products of the oven. The gas cooker further includes a folded metal sheet disposed in the upper compartment by the slits and having lateral edges contacting the plate to define a conduit between the slits and the exhaust path, and separate the exhaust path from the rest of the upper compartment which houses the control element, so as to prevent the control elements and the front panel from overheating.

A cover apparatus operable to at least partially cover an appliance is disclosed. The cover apparatus may include a front side, a left side coupled to the front side, and a right side coupled to the front side. The front side, the left side, and the right side may at least partially form an enclosure. The cover apparatus may also include one or more actuators operable to be mounted to a fixture situated above the appliance. The one or more actuators may be coupled to an underneath surface of the front side via one or more connectors that extend between the one or more actuators and the underneath surface of the front side. The cover apparatus may be operable to move between an open position and a closed position. The appliance may at least partially occupy the enclosure when the cover apparatus is in the closed position.