Whirlpool Corporation

Marcelo C Silva

Farhad Ashrafzadeh

Brian P Janke

Peter Richmond

Rodrigo S Teixeira

Luiz Von Dokonal

Evandro J Meurer

Rodrigo Stanziola Teixeira

Horacio B Polli

Matheus A Bevilaqua

Fernando P Silva

Luiz H Stival

An apparatus for detecting an imbalance in the laundry load and effecting a redistribution of the imbalance by reducing the rotational speed of the treating chamber such that part of the load may redistribute while part of the load remains satellized, without ceasing rotation, and increasing the rotational speed back to a spin speed after redistribution.

Apparatus for redistributing an imbalance in a laundry treating appliance

A method and apparatus for monitoring a characteristic of a motor, such as the leveling of torque, for use in determining a duration of an extraction phase of a cycle of operation in a laundry treating appliance.

Method and apparatus for controlling the extraction duration in a laundry treating appliance

According to one illustrative embodiment, a washing machine comprises a motor including a plurality of coils and one or more permanent magnets, an inverter configured to supply current to the plurality of coils and to measure a back electromotive force (BEMF) waveform from the plurality of coils, and an electronic control unit (ECU) configured to (i) integrate the BEMF waveform to generate an integrated BEMF waveform, (ii) determine a magnetic flux of the one or more permanent magnets using an amplitude of the integrated BEMF waveform, and (iii) control the current supplied by the inverter based at least in part upon the determined magnetic flux.

Determination of magnetic flux and temperature of permanent magnets in washing machine motor

An apparatus and method for detecting an imbalance in the laundry load and effecting a redistribution of the imbalance by reducing the rotational speed of the treating chamber such that part of the load may redistribute while part of the load remains satellized, without ceasing rotation, and increasing the rotational speed back to a spin speed after redistribution.

Method and apparatus for redistributing an imbalance in a laundry treating appliance

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Marcelo C Silva