公开(公告)号：US20220341076A1

公开(公告)日：2022-10-27

申请号：US17764825

申请日：2020-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Il Ha PARK ,  Soo Young OH ,  Mi Ju KIM ,  Hyun Dong KIM ,  Jae Yong JEONG

IPC: D06F33/37

Abstract: Provided are an additive supply unit configured to supply a stored additive to a washing tub, and a washing machine including the same. The present disclosure provides an additive supply unit including a cartridge configured to accommodate a liquid additive therein and discharge the additive through a discharge port formed at one side thereof, a discharge tube connected to the cartridge and configured to provide a discharge path for the additive discharged from the cartridge, a check valve assembly interposed between the cartridge and the discharge tube and configured to selectively open or close the discharge tube and the discharge port of the cartridge depending on a change in pressure, a pump configured to generate a pressure to be provided to the check valve assembly, and a pressure tube configured to connect the check valve assembly and the pump and transmit the pressure generated from the pump to the check valve assembly, in which the check valve assembly has one end connected to the cartridge and the other end connected to the discharge tube.