Laundry Washing Machine with Dynamic Rinse System

US Patent 12,139,836 B2 (Phillip C. Hombroek, Louisville, KY (US); and Alexi Blaise Poth, Louisville, KY (US))

Midea Group earned a patent for a laundry washing machine with dynamic rinse system. It comprises: a wash tub disposed within a housing; a wash basket disposed within the wash tub and rotatable about an axis of rotation; a drive system coupled to the wash basket to spin the wash basket about the axis of rotation; a fluid property sensor configured to sense a fluid property that varies with an amount of detergent in fluid from the wash tub; and a controller coupled to the drive system and the fluid property sensor; the controller configured to, during a wash cycle for a load disposed in the wash basket; control the drive system to spin the wash basket to cause fluid to be released from the load and into the wash tub; determine with the fluid property sensor a fluid property value associated with the fluid released from the load and into the wash tub while the drive system is spinning the wash basket; and to control a rinse operation performed thereafter during the wash cycle based at least in part upon the determined fluid property value; wherein the controller is further configured to control the rinse operation by spinning the wash basket at a rate below 100 RPM. After controlling the rinse operation, control the drive system to spin the wash basket in a fluid release speed range between 100-500 RPM to cause second fluid to be released from the load and into the wash tub and determine with the fluid property sensor a second fluid property value associated with the second fluid released from the load and into the wash tub, to determine that no additional rinse operation is needed based at least in part upon the determined second fluid property value, and to thereafter accelerate spinning of the load above the fluid release speed range at which the load is spun when determining the second fluid property value; and wherein the controller is configured to determine the second fluid property value while the wash basket is being spun in the fluid release speed range and while no rinse water is being supplied to the wash tub.