Whirlpool Corporation

Dan Christian Barfus

Wayne W Conard

Alex Lai

Rainman Xiao

Paul S Paget

James R Devlaminck

A method of controlling a portable appliance includes measuring an input current supplied to a motor of the portable appliance and measuring a rotational speed of a shaft of the motor. The method also includes determining a current limit based on the rotational speed of the shaft using a substantially continuous function which relates a domain of rotational speeds to a range of current limits. The method further includes reducing, when the input current exceeds the current limit, the rotational speed of the shaft incrementally along the substantially continuous function until the input current is approximately equal to the current limit.

Portable appliance motor control with speed-based current limitation

A blending appliance includes a housing having a jar receiving portion defined between an upper housing and a base portion laterally extending from the housing. A blender jar is adapted to be laterally received within the jar receiving portion and includes a jar base and a receptacle portion. A stator is disposed in the base portion of the housing and is adapted to create an electromagnetic field to drive a rotatable magnetic coupler disposed in the jar base as part of a magnetic coupling system. The rotatable magnetic coupler is coupled to a drive shaft that is further coupled to a blade assembly disposed within the receptacle portion of the blender jar. The blade assembly is configured to process ingredients within the receptacle portion of the blender jar as coupled to the rotatable magnetic coupler.

Growing community of inventors

St. Joseph, MI, United States of America

Dan Christian Barfus