Washing machine

Patent metadata

Field	Value
Publication number	US-12428766-B2
Application number	US-202318324905-A
Country	US
Kind code	B2
Filing date	May 26, 2023
Priority date	Feb 10, 2021
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

Disclosed is a washing machine having an improved structure of a pulsator. The washing machine includes a tub, a rotating tub rotatably provided in the tub, a pulsator provided in the rotating tub to generate a wash water flow, and an agitator coupled to the pulsator and provided to generate a water flow by rubbing laundry and water, and a discharge provided at a coupler of the pulsator and the agitator so that foreign substances or water inside the pulsator and the agitator are discharged.

First claim

What is claimed is:

1. A washing machine comprising:
a tub;
a rotating tub rotatably provided in the tub;
a pulsator provided in the rotating tub, and configured to generate wash water flow;
an agitator coupled to the pulsator and configured to generate water flow by rubbing laundry and water;
a first coupler including a coupling groove body formed in a cylindrical shape at a center of an upper surface of the pulsator;
one or more coupling grooves recessed from a bottom of the coupling groove body;
a second coupler including a coupling protrusion body formed at a lower end of the agitator to correspond to the coupling groove body; and
one or more coupling protrusions protruding from a lower end of the coupling protrusion body to correspond to the one or more coupling grooves.

2. The washing machine of claim 1 , further comprising:
a first discharge hole formed in at least a part of the pulsator, and
a second discharge hole formed in at least a part of the agitator.

3. The washing machine of claim 2 , wherein the first discharge hole and the second discharge hole are provided at positions corresponding to each other.

4. The washing machine of claim 3 , wherein the first discharge hole and the second discharge hole are each provided in a plurality.

5. The washing machine of claim 3 , wherein:
the first discharge hole is provided in the first coupler, and
the second discharge hole is provided in the second coupler.

6. The washing machine of claim 1 , wherein the one or more coupling grooves include at least two coupling grooves that are spaced apart from each other in a circumferential direction of the coupling groove body.

7. The washing machine of claim 2 , wherein the first discharge hole is formed in at least a part of one of the one or more coupling grooves.

8. The washing machine of claim 2 , wherein the second discharge hole is formed on at least a part of one of the one or more coupling protrusions.

9. The washing machine of claim 8 , wherein the second discharge hole is positioned at a bottom of the one of the one or more coupling protrusions.

10. The washing machine of claim 2 , further comprising:
a discharge flow path formed to discharge water and foreign substances inside the agitator,
wherein the first discharge hole and the second discharge hole are positioned in the discharge flow path.

11. The washing machine of claim 10 , wherein the discharge flow path is formed between an inside of the agitator or the pulsator and an outside of the pulsator.

12. A washing machine comprising:
a rotating tub configured to accommodate laundry;
a pulsator rotatably provided in the rotating tub, wherein the pulsator is rotatably coupled with a first part rotatably provided at a lower portion of the rotating tub and about an axis perpendicular to the first part;
a coupler including a coupling groove body formed in a cylindrical shape at a center of an upper surface of the first part;
one or more coupling grooves recessed from a bottom of the coupling groove body;
a second part including a coupling protrusion body formed at a lower end of the second part to correspond to the coupling groove body;
and
a discharge hole provided in the coupler to discharge foreign substances and water inside the pulsator through the coupler.

13. The washing machine of claim 12 , wherein the discharge hole includes:
a first discharge hole formed in at least a portion of the first part, and
a second discharge hole formed in at least a portion of the second part.

14. The washing machine of claim 13 , wherein the first discharge hole and the second discharge hole are positioned to correspond to each other.

15. The washing machine of claim 13 , wherein a plurality of the first discharge hole and a plurality of the second discharge hole are positioned to correspond to each other.

16. The washing machine of claim 13 , wherein:
the discharge hole further includes a discharge flow path formed to discharge water and foreign substances inside the pulsator, and
the first discharge hole and the second discharge hole are positioned on the discharge flow path.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jo Youngchul
• Kang Heejin

Classifications

• D06F39/083

  Liquid discharge or recirculation arrangements · CPC title

• D06F37/12

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

• D06F17/10 Primary

  Impellers · CPC title

• B01F27/92

  with helices or screws · CPC title

• D06F13/02 Primary

  wherein the agitator has an oscillatory rotary motion only · CPC title