Washing method for washing machine and a washing machine

Patent metadata

Field	Value
Publication number	US-2016201241-A1
Application number	US-201615078461-A
Country	US
Kind code	A1
Filing date	Mar 23, 2016
Priority date	Aug 3, 2012
Publication date	Jul 14, 2016
Grant date	—

Abstract

A washing machine contains a wash tub, an impeller and a motor. Clothing is put into the tub and the load is detected. Water is added until the water level is below or equal to load height. To begin washing, the impeller drives the clothing to overturn, resulting in generating three types of water flows: agitating flow, enhancing flow and balancing flow. At first, the agitating flow breaks the balance of the load to disperse clothing, then the enhancing flow overturns clothing for washing. Finally, the balancing flow maintains the circulation path for the load balance overturning. Single sequential control or repeatedly alternating cycle control of the three types of water flows can be adopted for washing. The invention can save water, improve washing efficiency and avoid intertwining of clothing, characterized by full-range, thorough, repeated and efficient washing.

First claim

1 . A washing machine comprising:
a washing tub; and an impeller and a motor, the impeller comprising an impeller disk and water spinning blades arranged on a surface of the impeller disk, the impeller disk being of basin-shaped structure with a bulge on a center of the impeller disk, each group of water spinning blades extending from the center of the impeller disk to an edge of the impeller disk, and the water spinning blade mainly comprising at least two convex ribs which incline to two sides in an extension direction of the water spinning blade respectively to form a twisted structure of the water spinning blade.

2 . The washing machine according to claim 1 , wherein:
the water spinning blade is of linear or curved shape in extension direction, and when the water spinning blade is of a curved shape in extension direction, the water spinning blade has at least two convex ribs with different rates of curve or slope projected on the surface of the impeller disk, or, the water spinning blade at least comprises a curved convex rib and a linear convex rib.

3 . The washing machine according to claim 1 , wherein:
the water spinning blade comprises a first convex rib close to the center of the impeller disk and a second convex rib close to the edge of the impeller disk, the first convex rib and the second convex rib incline to the surfaces of the impeller disk on different sides respectively, slope angles between the convex ribs and a vertical surface of the impeller disk where the water spinning blade intersects with the surface the impeller disk are less than or equal to 35°, A smooth transition is realized between both sides of the water spinning blade and the surface of the impeller disk.

4 . The washing machine according to claim 3 , wherein a projection of the first convex rib and the second convex rib on the surface of the impeller disk is a profile of two arches whose centers of circle are on two sides of the water spinning blade respectively.

5 . The washing machine according to claim 4 , wherein a central angle between two ends of the water spinning blade is in the range 15°-90°.

6 . The washing machine according to claim 5 , wherein a central angle between two ends of the water spinning blade is in the range 30°-60°.

7 . The washing machine according to claim 1 , wherein:
a height of an upper surface of the water spinning blade in the extension direction from the center of the impeller disk to the edge of the impeller disk is changed as follows: at first rising to a maximum height, then falling to a minimum height and finally rising to realize smooth transition with an inner circumferential wall of the basin-shaped impeller disk; a height difference between the maximum height and the minimum height of the water spinning blade is 1-1.5 times a depth of the impeller disk; a height difference between the maximum height of the water spinning blade and the center of the impeller disk is 0-0.2 times the depth of the impeller disk; and a position of smooth transition between the water spinning blade and the inner circumferential wall of the impeller disk is located on ⅓-⅔ of the impeller disk depth.

8 . The washing machine according to claim 3 , wherein:
a height of an upper surface of the water spinning blade in the extension direction from the center of the impeller disk to the edge of the impeller disk is changed as follows: at first rising to a maximum height, then falling to a minimum height and finally rising to realize smooth transition with an inner circumferential wall of the basin-shaped impeller disk, a height difference between the maximum height and the minimum height of the water spinning blade is 1-1.5 times a depth of the impeller disk, a height difference between the maximum height of the water spinning blade and the center of the impeller disk is 0-0.2 times the depth of the impeller disk; and a position of smooth transition between the water spinning blade and the inner circumferential wall of the impeller disk is located on ⅓-⅔ of the impeller disk depth.

9 . The washing machine according to claim 4 , wherein:
a height of an upper surface of the water spinning blade in the extension direction from the center of the impeller disk to the edge of the impeller disk is changed as follows: at first rising to a maximum height, then falling to a minimum height and finally rising to realize smooth transition with an inner circumferential wall of the basin-shaped impeller disk, a height difference between the maximum height and the minimum height of the water spinning blade is 1-1.5 times a depth of the impeller disk, a height difference between the maximum height of the water spinning blade and the center of the impeller disk is 0-0.2 times the depth of the impeller disk; and a position of smooth transition between the water spinning blade and the inner circumferential wall of the impeller disk is located on ⅓-⅔ of the impeller disk depth.

10 . The washing machine according to claim 5 , wherein:
a height of an upper surface of the water spinning blade in the extension direction from the center of the impeller disk to the edge of the impeller disk is changed as follows: at first rising to a maximum height, then falling to a minimum height and finally rising to realize smooth transition with an inner circumferential wall of the basin-shaped impeller disk, a height difference between the maximum height and the minimum height of the water spinning blade is 1-1.5 times a depth of the impeller disk, a height difference between the maximum height of the water spinning blade and the center of the impeller disk is 0-0.2 times the depth of the impeller disk; and a position of smooth transition between the water spinning blade and the inner circumferential wall of the impeller disk is located on ⅓-⅔ of the impeller disk depth.

11 . The washing machine according to claim 3 , wherein:
a slope angle between the first convex rib and the vertical surface of the impeller disk is an amount ranging from 5° to 10°; and a slope angle between the second convex rib and the vertical surface of the impeller disk is an amount ranging from 10° to 15°.

12 . The washing machine according to claim 7 , wherein:
the height difference between the maximum height of the water spinning blade and the center of the impeller disk is 0.1 times the depth of the impeller disk.

Assignees

• Haier Group Corp
• Qingdao Haier Washing Mach Co

Inventors

• Zhang Tao
• Tian Yun
• Xu Wenting
• Gao Qiuying
• Gong Menghu
• Li Feng

Classifications

• D06F17/10 Primary

  Impellers · CPC title

• D06F17/08

  Driving arrangements for the impeller · CPC title

• D06F33/36

  of washing · CPC title

• D06F39/088

  Liquid supply arrangements · CPC title

• D06F35/006

  for washing or rinsing only · CPC title