公开(公告)号：US12209348B2

公开(公告)日：2025-01-28

申请号：US17764798

申请日：2020-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Hyun Dong Kim ,  Jae Yong Jeong ,  Soo Young Oh ,  Kyo Soon Chae

IPC: D06F39/02 ,  D06F39/08

Abstract: An additive supply apparatus includes a cartridge configured to accommodate a liquid additive and discharge the additive through a discharge port thereof, a discharge tube connected to the cartridge and configured to guide 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 based on a change in pressure, a pump configured to generate the pressure to be provided to the check valve assembly, a pressure tube that connects the pump to the check valve assembly and configured to transmit the pressure to the check valve assembly, and a water supply tube coupled to the discharge tube or the check valve assembly and configured to supply washing water to at least one of the discharge tube or the check valve assembly.