US 11,773,525 B2
Double-rotor washing type drum washing machine
Krati Bhargava, Stevensville, MI (US); Fang Deng, Novi, MI (US); James B. Hull, St. Joseph, MI (US); Wang Jun, Hefei (CN); Dennis Kehl, Benton Harbor, MI (US); and Weitao Yang, Hefei (CN)
Assigned to Whirlpool Corporation, Benton Harbor, MI (US)
Filed by WHIRLPOOL CORPORATION, Benton Harbor, MI (US)
Filed on Mar. 4, 2020, as Appl. No. 16/808,869.
Claims priority of provisional application 62/842,083, filed on May 2, 2019.
Prior Publication US 2020/0347538 A1, Nov. 5, 2020
Int. Cl. D06F 37/30 (2020.01); D06F 21/02 (2006.01); D06F 21/14 (2006.01); D06F 37/06 (2006.01); D06F 37/40 (2006.01); H02K 16/02 (2006.01)
CPC D06F 37/304 (2013.01) [D06F 21/02 (2013.01); D06F 21/14 (2013.01); D06F 37/06 (2013.01); D06F 37/40 (2013.01); H02K 16/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A laundry appliance comprising:
a drum that is rotationally operable about a rotational axis within a tub, wherein the rotational axis is oriented in a generally horizontal configuration;
an impeller that is rotationally operable within the drum about the rotational axis;
a dual-rotor motor that is coupled to the drum and the impeller for providing separate and independent rotation of the drum and the impeller about the rotational axis, wherein an inner rotor of the dual-rotor motor is coupled with the impeller and an outer rotor of the dual-rotor motor is coupled with the drum;
a structural fastener that attaches the dual-rotor motor to the tub, the structural fastener having a plate positioned behind the dual-rotor motor and plate bosses that extend from the plate to the tub, wherein the dual-rotor motor operates between the plate and the tub; and
a structural overmold, wherein the plate, the plate bosses and a stator of the dual-rotor motor are incorporated within the structural overmold.