Laundry washing machine comprising an agitator

Patent metadata

Field	Value
Publication number	US-10914031-B2
Application number	US-201815959989-A
Country	US
Kind code	B2
Filing date	Apr 23, 2018
Priority date	Apr 27, 2017
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

A laundry washing machine having a washing basket that is loaded through the upper area, and an agitator located inside the washing basket. The agitator has a base, a hollow elongated body provided with at least one opening, and a filtration element located within the agitator. The agitator has a plane defined by the intersection of at least two areas of the edge of the opening to form an angle, relative to a tangential velocity vector of the rotational movement of the agitator starting from said opening, the angle being defined between 15° and 90°.

First claim

The invention claimed is:

1. A laundry washing machine comprising:
a washing basket configured to be loaded through an upper end thereof; and
an agitator located inside the washing basket and comprising:
a base;
a filtration element located in a chamber within the agitator; and
an elongated hollow body having at least one opening for the admission of washing liquid into the chamber;
wherein the at least one opening lies in a plane that intersects at least two edge areas of the opening forming an angle with respect to a tangential velocity vector, of a rotational movement of the agitator starting from said opening, the angle being defined between 15° and 90°.

2. The laundry washing machine according to claim 1 , wherein the angle is defined between 30° and 90°.

3. The laundry washing machine according to claim 1 , wherein the elongated hollow body of the agitator comprises external projections that are oriented, as observed in a transverse section along the length of the elongated hollow body, at a direction ranging from 0° to 89° relative to a plane that is orthogonal to an axis of rotation of the agitator and passes through a center of rotation of the agitator.

4. The laundry washing machine according to claim 1 , wherein the elongated hollow body of the agitator comprises arched external projections, and the opening is located adjacent to the base of an inner area of the external projections projection.

5. The laundry washing machine according to claim 1 , wherein the elongated hollow body of the agitator has a cross section perpendicular to the axis of rotation of the agitator with a peripheral area formed by two radially opposed inner wall segments extending along an inner circle having a first diameter, and two radially opposed outer wall segments extending along an outer circle having a second diameter that is greater than the first diameter, the inner circle and outer circle being circumscribed, wherein each of the two outer wall segments radially overlaps an adjacent edge area of each inner wall segment and the two outer wall segments and the two inner wall segments each occupies one quarter of the peripheral portion of the cross-section of the elongated hollow body.

6. The laundry washing machine according to claim 5 , wherein the the at least one opening comprises a respective opening formed between each outer wall segment and the adjacent edge area of each inner wall segment, and a respective projection extends radially from each outer wall segment at each respective.

7. The laundry washing machine according to claim 1 , wherein the elongated hollow body of the agitator has a cross section perpendicular to the axis of rotation of the agitator with a peripheral area formed by two flat sides and two arched sides, each of the flat sides radially overlapping an adjacent edge area of each flat side in each quarter of the peripheral portion.

8. The laundry washing machine according to claim 7 , wherein the elongated hollow body of the agitator comprises projections located on the flat side and a respective opening is located adjacent to a respective end of a respective arched side.

9. The laundry washing machine according to claim 1 , wherein the elongated hollow body of the agitator has a cross section perpendicular to the axis of rotation of the agitator with a peripheral area in which each quadrant comprises an arched portion offset toward a center of rotation (TC) of the agitator.

10. The laundry washing machine according to claim 9 , wherein each cross-sectional portion comprises an end provided with a projection and an end next to a respective opening.

11. The laundry washing machine according to claim 9 , wherein the arched portions are all of the same diameter.

12. The laundry washing machine according to claim 1 , wherein the agitator comprises a plurality of openings located along its length.

13. The laundry washing machine according to claim 12 , wherein the agitator comprises pairs of rows of openings along the elongated hollow body, the openings of each row being oriented in opposite rotational directions of the agitator.

14. The laundry washing machine according to claim 1 , wherein the filtration element comprises filtering surfaces and intake openings, and wherein the at least one opening of the agitator comprises a plurality of openings adjacent to respective intake openings of the filtration element.

15. The laundry washing machine according to claim 1 , wherein the base of the agitator comprises a plurality of openings in the base.

16. The laundry washing machine according to claim 15 , wherein the openings in the base are located in a radial periphery of the base.

17. The laundry washing machine according to claim 14 , wherein the openings and the intake openings of the filter element are aligned with the direction of the tangential velocity vector of the movement of the agitator.

Assignees

• Electrolux Do Brasil Sa

Inventors

• Piekarski Marcelo
• Pazinato Luiz Carlos
• Costi Fabiano
• Madalena Oscar Luiz
• Orthmann Eduardo
• De Menezes Lino Modesto Eduardo
• Marconcin Vanhazebrouck Vicente
• Cardozo Adriano Bonatto

Classifications

• D06F39/10 Primary

  Filtering arrangements · CPC title

• D06F39/083

  Liquid discharge or recirculation arrangements · CPC title

• D06F39/088

  Liquid supply arrangements · CPC title

• D06F13/02

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