Laundry washing machine for use with unit dose detergent packages

Patent metadata

Field	Value
Publication number	US-2022018050-A1
Application number	US-202017054667-A
Country	US
Kind code	A1
Filing date	Jul 3, 2020
Priority date	Jul 3, 2019
Publication date	Jan 20, 2022
Grant date	—

Abstract

A laundry washing machine with a vertical-axis agitator and a control unit. The control unit has a processor and a memory with instructions that, when executed, cause the laundry washing machine to: receive a selection of user preferences via a user interface, determine whether or not the user preferences include a selection of a unit dose package mode having instructions to modify the default wash filling process, and based on this determination: operate the washing machine to execute the user preferences without applying the instructions to modify a default wash filling process if the user preferences do not include the selection of the unit dose package mode, or operate the washing machine to execute the user preferences with applying the instructions to modify the default wash filling process if the user preferences do include the selection of the unit dose package mode.

First claim

1 . A laundry washing machine comprising:
a casing; a tub supported in the casing; a drum mounted in the tub and configured to rotate about a vertical axis; an agitator mounted in the drum and configured to rotate about the vertical axis; a motor and transmission operatively connected to the drum and the agitator; a valve operatively connected to control a flow of water from a water supply to the tub; a user interface configured to receive operator input; and a control unit having a processor and a memory, the memory having stored therein instructions that, when executed, cause the control unit to operate the laundry washing machine to:
receive a selection of user preferences via the user interface, the user preferences comprising at least a washing program having a default wash filling process in which the valve is opened to direct water into the tub at a beginning of the washing program,
receive a user command to operate the washing machine according to the user preferences,
determine whether or not the user preferences include a selection of a unit dose package mode having instructions to modify the default wash filling process, and based on this determination:
operate the washing machine to execute the user preferences without applying the instructions to modify the default wash filling process if the user preferences do not include the selection of the unit dose package mode, or
operate the washing machine to execute the user preferences with applying the instructions to modify the default wash filling process if the user preferences do include the selection of the unit dose package mode.

2 . The laundry washing machine of claim 1 , wherein the default wash filling process comprises a default wash temperature setting and a default wash fill level setting.

3 . The laundry washing machine of claim 2 , wherein the user preferences comprise a user instruction to modify one or both of the default wash temperature setting and the default wash fill level setting.

4 . The laundry washing machine of claim 1 , wherein the default wash filling process comprises filling the tub without operating the motor to rotate the agitator, and the instructions to modify the default wash filling process comprise instructions to rotate the agitator during the wash filling process.

5 . The laundry washing machine of claim 4 , wherein the instructions to rotate the agitator during the wash filling process comprise instructions to rotate the agitator after a first wash fill level is reached, but before the wash filling process is complete.

6 . The laundry washing machine of claim 4 , wherein the washing program further comprises a wash agitation process that is performed after completion of the wash filling process, the wash agitation process including rotating the agitator using a first duty cycle, and the instructions to rotate the agitator during the wash filling process comprise instructions to rotate the agitator using a second duty cycle, the second duty cycle being different from the first duty cycle.

7 . The laundry washing machine of claim 6 , wherein:
the first duty cycle comprises operating the motor to drive the agitator in a forward direction, pausing the motor, operating the motor to drive the agitator in a reverse direction, pausing the motor, and repeating the foregoing steps, in that order; and the second duty cycle comprises operating the motor to drive the agitator in a forward direction, pausing the motor, and repeating the foregoing steps, in that order.

8 . The laundry washing machine of claim 1 , wherein the default wash filling process comprises filling the tub to a predetermined default wash fill level, and the instructions to modify the default wash filling process comprise instructions to increase the water fill level above the default wash fill level.

9 . The laundry washing machine of claim 8 , wherein the instructions to increase the water fill level above the default wash fill level comprise instruction to raise the fill level by a predetermined percentage of the default wash fill level.

10 . The laundry washing machine of claim 8 , wherein the instructions to increase the water fill level above the default wash fill level comprise instruction to raise the fill level by a predetermined fixed amount, regardless of the default wash fill value.

11 . The laundry washing machine of claim 1 , wherein the default wash filling process comprises filling the tub to a predetermined default wash fill level without operating the motor to rotate the agitator, and the instructions to modify the default wash filling process comprise instructions to rotate the agitator during the wash filling process and instructions to increase the water fill level above the default wash fill level.

12 . The laundry washing machine of claim 11 , wherein the instructions to rotate the agitator during the wash filling process comprise instructions to rotate the agitator after a first wash fill level is reached, but before the wash filling process is complete.

13 . The laundry washing machine of claim 11 , wherein the washing program further comprises a wash agitation process that is performed after completion of the wash filling process, the wash agitation process including rotating the agitator using a first duty cycle, and the instructions to rotate the agitator during the wash filling process comprise instructions to rotate the agitator using a second duty cycle, the second duty cycle being different from the first duty cycle.

14 . The laundry washing machine of claim 11 , wherein the instructions to increase the water fill level above the default wash fill level comprise instruction to raise the fill level by a predetermined percentage of the default wash fill level.

15 . The laundry washing machine of claim 11 , wherein the instructions to increase the water fill level above the default wash fill level comprise instruction to raise the fill level by a predetermined fixed amount, regardless of the default wash fill value.

Assignees

• Electrolux Appliances AB

Inventors

• Bernardino Flavio
• Saini Gagan

Classifications

• D06F2105/10

  Temperature of washing liquids; Heating means therefor · CPC title

• D06F2105/52

  Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps · CPC title

• D06F37/40

  for driving the receptacle and an agitator or impeller, e.g. alternatively {(D06F37/304, D06F37/308 take precedence)} · CPC title

• D06F23/04

  and rotating or oscillating about a vertical axis · CPC title

• D06F33/37

  of metering of detergents or additives · CPC title