Washing machine

Patent metadata

Field	Value
Publication number	US-9347165-B2
Application number	US-201414266777-A
Country	US
Kind code	B2
Filing date	Apr 30, 2014
Priority date	Apr 30, 2013
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

The washing machine includes a tub containing wash water, a drum, a lifter, and a partition. The drum rotates inside the tub and has at least one inlet to introduce wash water contained in the tub. The lifter forms a chamber holding wash water introduced through the inlet together with the drum and discharges wash water into the drum through a plurality of discharge holes arranged from a front side to a rear side inside the chamber during the rotation of the drum. The partition divides the chamber into a front chamber and a rear chamber along a longitudinal direction of the drum and forms an angle inclined with respect to a circumference of the drum.

First claim

What is claimed is:

1. A washing machine comprising:
a tub configured to hold water;
a rotatable drum disposed in the tub, the drum having an inlet formed on an outer circumferential surface of the drum to receive water contained in the tub; and
a lifter extending inwardly from the an inner circumferential surface of the drum, the lifter together with the inner circumferential surface of the drum forming a chamber that holds water received through the inlet, the lifter having a discharge hole through which water within the chamber is discharged during the rotation of the drum, the lifter including a partition dividing the chamber into a front chamber and a rear chamber along a longitudinal direction of the drum, the partition disposed at an oblique angle with respect to longitudinal axis of the drum, wherein an edge of the partition is attached to the inner circumference of the drum and wherein a first end of the edge is closer to a front of the drum, and a second end opposite the first end is closer to a rear of the drum.

2. The washing machine of claim 1 , wherein the lifter includes a plurality of lifters, and wherein the partition comprises a front end obliquely directing to a forward rotation direction of the drum and a rear end obliquely directing to a backward rotation direction of the drum.

3. The washing machine of claim 2 , wherein the partition is formed such that a flow path of water in the chamber gradually becomes narrower from inlet to discharge hole.

4. The washing machine of claim 1 , wherein the discharge hole comprises a plurality of discharge holes in the front chamber opening in a forward rotation direction of the drum and a plurality of discharge holes in the rear chamber opening in a backward direction of the drum.

5. The washing machine of clam 1 , wherein the inlet comprises a plurality of inlets disposed along the longitudinal direction of the drum.

6. The washing machine of claim 1 , further including a scoop protruding from the outer circumferential surface of the drum to draw water in the tub into the lifter and in fluid communication with the inlet.

7. The washing machine of claim 6 , wherein the inlet includes a plurality of inlets disposed along the longitudinal direction of the drum and wherein the scoop comprises:
a front scoop in fluid communication with at least one of the inlets and opening toward a forward rotation direction of the drum to draw water into the front chamber and
a rear scoop in fluid communication with at least an other of the inlets and opening toward a backward rotation direction of the drum to draw water into the rear chamber.

8. The washing machine of claim 1 , wherein the partition extends between the inner circumferential surface of the drum and an inner surface of the lifter.

9. The washing machine of claim 1 , further including a separation partition dividing the front chamber or the rear chamber into a plurality of flow sections.

10. The washing machine of claim 9 , wherein the separation partition connects between the inner circumferential surface of the drum and an inner surface of the lifter, the inlet includes a plurality of inlets, the discharge hole includes a plurality of discharge holes, and some of the inlets and some of the discharge holes are provided to correspond to each flow section.

11. The washing machine of claim 10 , wherein the flow sections are formed such that a flow path of water becomes narrower from the inlets to the discharge holes.

12. The washing machine of claim 10 , wherein the separation partition includes a plurality of separation partitions forming a plurality of the flow sections divided by the separation partitions.

13. The washing machine of claim 1 , wherein the lifter includes a first side surface and a second surface, the side surfaces extend at an oblique angle inclined with respect to the inner circumferential surface of the drum, and an inclination angle of the first side surface decreases from a front side to a rear side of the chamber and an inclination angle of the second side surface becomes steeper from the front side to the rear side of the chamber.

14. The washing machine of claim 13 , wherein the discharge hole includes a plurality of front discharge holes formed in a front side portion of the first side surface based on a location of the partition and a plurality of rear discharge holes formed in a rear site portion of the second side surface based on the location of the partition.

15. The washing machine of claim 14 , wherein the front discharge holes are provided on the fronts side portion and the rear discharge holes are provided the rear side portion, the front discharge holes are arranged along the longitudinal direction of the drum to discharge water out of the front chamber, and
the rear discharge holes are arranged along the longitudinal direction of the drum to discharge water out of the rear chamber.

16. The washing machine of claim 1 , wherein when one of the front chamber and the rear chamber is stopped from discharging water during a frontward rotation of the drum, the other chamber discharges water during a backward rotation of the drum.

17. A washing machine comprising:
a tub configured to hold water;
a rotatable drum disposed in the tub, the drum having a plurality of inlets formed on an outer circumferential surface of the drum to receive water contained in the tub;
a plurality of lifters extending inwardly from an inner circumferential surface of the drum, each lifter inlets together with the drum forming a chamber that holds water received through the inlets, each lifter having a plurality of front discharge holes and a plurality of rear discharge holes through which water within the chamber is discharged during the rotation of the drum; and
partitions extending between the inner circumferential surface of the drum and an inner surface of each lifter and dividing each chamber into a front chamber and a rear chamber along a longitudinal direction of the drum and forming an oblique angle with respect to a longitudinal axis of the drum, each partition including an edge attached to the inner circumferential surface of the drum, wherein a first end of the edge is closer to a front of the drum, and a second end of the edge opposite the first end is closer to a rear of the drum, each partition being formed such that a flow path of water in each chamber gradually becomes narrower from inlet to discharge hole, the front discharge holes being disposed in the front chamber opening in the forward rotation direction of the drum and the plurality of discharge holes being disposed in the rear chamber opening in the backward direction of the drum.

18. The washing machine of claim 1 , further including a scoop protruding from an outer circumferential surface of the drum to draw water in the tub into each lifter and in fluid communication with the inlet, the scoop including:
a front scoop in fluid communication with at least one of the inlets and opening toward the forward rotation direction of the drum to draw water into die front chamber and
a rear scoop in fluid communication with at least an other of the inlets and opening toward a backward rotation direction of the drum to draw water into the rear chamber.

19. The washing machine of claim 18 , further including a separation partition dividing the front chamber or the rear chamber into a plurality of flow sections, wherein the separation partition connects between the inner circumferential surface of the drum and the inner surface of the lifter, wherein some of the inlets

Assignees

• Lg Electronics Inc

Inventors

• Kim Chihyun
• Kim Dahye
• Eom Sungyong

Classifications

• D06F37/065 Primary

  ribs or lifters having means for circulating the washing liquid · CPC title

• D06F37/08

  Partitions · CPC title

• D06F37/34

  in opposite directions, e.g. oscillating · CPC title

• D06F37/26

  Casings; Tubs · CPC title

• D06F39/12

  Casings; Tubs · CPC title