Washing machine

Patent metadata

Field	Value
Publication number	US-11174580-B2
Application number	US-201716323105-A
Country	US
Kind code	B2
Filing date	Jul 11, 2017
Priority date	Aug 4, 2016
Publication date	Nov 16, 2021
Grant date	Nov 16, 2021

Abstract

Provided is a washing machine capable of preventing laundry in a rotary tub from having pigment transfer or contamination due to wash water of an auxiliary washing tub. The washing machine includes a cabinet, a tub located in the cabinet and storing wash water therein, a main washing tub rotatably disposed in the tub and having a first washing space, and an auxiliary washing tub detachably mounted to the main washing tub and having a second washing space, wherein the auxiliary washing tub includes a drain path for guiding wash water of the second washing space to a space between the tub and the main washing tub.

First claim

The invention claimed is:

1. A washing machine comprising:
a cabinet;
a tub located in the cabinet and storing wash water therein;
a main washing tub rotatably disposed in the tub and having a first washing space; and
an auxiliary washing tub detachably mounted to the main washing tub and having a second washing space,
wherein the auxiliary washing tub includes a drain path for guiding wash water of the second washing space to a space between the tub and the main washing tub,
wherein the auxiliary washing tub includes:
a basket portion including a bottom wall, a sidewall extending upward from the bottom wall to form the second washing space, and a seating portion radially outwardly extending from the sidewall to be seated on an upper side of the main washing tub, and
a cover portion provided at an upper side of the basket portion and having a laundry inlet,
wherein the cover portion includes a first partition wall extending downwardly toward the sidewall and having a first drain groove, the first partition wall forms a first drain hole together with the sidewall, and
wherein the seating portion includes a second partition wall extending upwardly toward the cover portion and having a second drain groove, the second partition wall forms a second drain hole together with the cover portion.

2. The washing machine of claim 1 , wherein the drain path is formed by the seating portion and the cover portion.

3. The washing machine of claim 1 , wherein the first drain hole and the second drain hole are located to be higher than an upper end of the main washing tub.

4. The washing machine of claim 1 , wherein the cover portion further includes an inner cover portion that guides wash water in the basket portion to the first drain hole and an outer cover portion that guides wash water having passed through the first drain hole and the second drain hole to an outside of the main washing tub together with the seating portion.

5. The washing machine of claim 4 , wherein the inner cover portion extends toward an inside of the basket portion, and the outer cover portion extends toward an outside of the basket portion and is bent downward.

6. The washing machine of claim 1 , wherein wash water in the auxiliary washing tub is introduced into the first drain hole along the sidewall when the auxiliary washing tub rotates at a predetermined rotational speed or above, and the wash water introduced into the first drain hole is introduced into the second drain hole by the first partition wall and the second partition wall, and the wash water introduced into the second drain hole is guided to the outside of the main washing tub by the seating portion and the cover portion.

7. The washing machine of claim 1 , wherein the auxiliary washing tub is formed of deformable material, has a ring shape, and further includes a drain path opening and closing member to open or close the drain path depending on a rotational speed of the auxiliary washing tub.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Ryu Myung-Hee
• Jin Yongjie
• Kim Yong-Kwon
• Lee Sang Up
• Pyo Sang Yeon

Classifications

• D06F39/083

  Liquid discharge or recirculation arrangements · CPC title

• D06F37/267 Primary

  Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups (D06F37/206 takes precedence) · CPC title

• D06F37/12

  adapted for rotation or oscillation about a vertical axis · CPC title

• D06F39/12

  Casings; Tubs · CPC title

• D06F37/16 Primary

  Partitions · CPC title