Title:
WASHING MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/209683
Kind Code:
A1
Abstract:
A washing machine includes: a tub and a detergent supply device which supplies a liquid additive to the tub, wherein the detergent supply device includes: a cartridge containing the additive; a check valve assembly including a check valve for controlling extracting of the additive, and a check valve housing forming a space in which the extracted additive is temporarily stored; a pump for extracting the additive by changing a pressure in the space; and an outlet passage through which the temporarily stored additive is discharged, wherein the check valve assembly comprises a first outlet opening communicating with the cartridge, a second outlet opening communicating with the outlet passage, a first check valve for opening and closing the first outlet opening, and a second check valve for opening and closing the second outlet opening, wherein the first and second check valves are opened in the same direction.
Inventors:
JEONG JAEYONG (KR)
CHAE KYOSOON (KR)
KIM HYUNDONG (KR)
OH SOOYOUNG (KR)
CHAE KYOSOON (KR)
KIM HYUNDONG (KR)
OH SOOYOUNG (KR)
Application Number:
PCT/KR2020/004933
Publication Date:
October 15, 2020
Filing Date:
April 10, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
D06F39/02
Domestic Patent References:
| WO2017119593A1 | 2017-07-13 |
Foreign References:
| US20120291916A1 | 2012-11-22 | |||
| US20170107657A1 | 2017-04-20 | |||
| KR101257703B1 | 2013-04-24 | |||
| US20060272360A1 | 2006-12-07 |
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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