Method and apparatus for cleaning laundry

Patent metadata

Field	Value
Publication number	US-11066775-B2
Application number	US-201816131757-A
Country	US
Kind code	B2
Filing date	Sep 14, 2018
Priority date	Sep 14, 2018
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A laundry washing machine having: a casing, a washing tub located within the casing, a drum mounted within the washing tub and configured to rotate relative to the casing, a door attached to the casing and being openable to provide access to the drum, an additive loading and supply system configured to receive loose detergent, one or more valves configured to selectively provide water to the additive loading and supply system, a tub supply pipe fluidly connecting the additive loading and supply system to the drum, a receptacle configured to receive a unit dose package comprising a water soluble pouch containing a dose of cleaning product, and means for breaking the unit dose package outside the additive loading and supply system.

First claim

The invention claimed is:

1. A laundry washing machine comprising:
a casing;
a washing tub located within the casing;
a drum mounted within the washing tub and configured to rotate relative to the casing;
a door attached to the casing and being openable to provide access to the drum;
an additive loading and supply system configured to receive loose detergent;
one or more valves configured to selectively provide water to the additive loading and supply system;
a tub supply pipe fluidly connecting the additive loading and supply system to the drum;
a receptacle configured to receive a unit dose package comprising a water soluble pouch containing a dose of cleaning product; and
means for breaking the unit dose package outside the additive loading and supply system;
wherein the receptacle is located in the additive loading and supply system, and at least a first portion of the tub supply pipe is configured to pass an unbroken unit dose package therethrough; and
wherein the means for breaking the unit dose package comprises a retainer fixed in place in the tub supply pipe, the retainer being configured to prevent an unbroken unit dose package from passing downstream through the tub supply pipe and allow only a broken unit dose package to pass downstream through the tub supply pipe; and
wherein the means for breaking the unit dose package further comprises one or more knives or pins operatively associated with the retainer.

2. The laundry washing machine of claim 1 , wherein the means for breaking the unit dose package further comprises one or more nozzles located adjacent to the retainer and configured to deposit water towards the retainer.

3. The laundry washing machine of claim 1 , wherein the one or more knives or pins are movable to a position in which the one or more knives or pins contact the unit dose package retained by the retainer.

4. The laundry washing machine of claim 1 , wherein the retainer comprises a receptacle configured to hold the unit dose package and a quantity of water therein.

5. The laundry washing machine of claim 4 , wherein the means for breaking the unit dose package further comprises one or more nozzles configured to deposit water directly into the retainer.

6. The laundry washing machine of claim 1 , wherein the tub supply pipe comprises a vertical shaft portion and the retainer is located in the vertical shaft portion, and the means for breaking the unit dose package further comprises water passing from the one or more valves and down the vertical shaft portion.

7. The laundry washing machine of claim 1 , wherein the receptacle is located remotely from the additive loading and supply system.

8. The laundry washing machine of claim 7 , wherein the laundry washing machine further comprises one or more nozzles configured to deposit water directly into the receptacle.

9. The laundry washing machine of claim 7 , wherein the receptacle is located in the door.

10. The laundry washing machine of claim 7 , wherein the receptacle comprises a drawer that intersects the tub supply pipe.

11. The laundry washing machine of claim 1 , wherein the retainer comprises a chamber having a restriction in a cross-sectional shape or size dimensioned to prevent an unbroken unit dose package from passing downstream.

12. The laundry washing machine of claim 1 , wherein the retainer comprises a perforated plate, a wire mesh, one or more rods, or ribs.

13. A laundry washing machine comprising:
a casing;
a washing tub located within the casing;
a drum mounted within the washing tub and configured to rotate relative to the tub;
a door attached to the casing and being openable to provide access to the drum;
an additive loading and supply system configured to receive loose detergent and supply the loose detergent and water to one of the tub and the drum;
one or more valves configured to selectively provide water to the additive loading and supply system;
a receptacle configured to receive a unit dose package comprising a water soluble pouch containing a dose of cleaning product and supply the unit dose package to the tub; and
means for breaking the unit dose package positioned at a location inside the washing tub, and outside the receptacle and the drum;
wherein the means for breaking the unit dose package comprises one or more inwards protrusions extending from an inner wall of the washing tub towards the drum and/or one or more outwards protrusions extending from an outer wall of the drum towards the washing tub.

14. A laundry washing machine comprising:
a casing;
a washing tub located within the casing;
a drum mounted within the washing tub and configured to rotate relative to the tub;
a door attached to the casing and being openable to provide access to the drum;
an additive loading and supply system configured to receive loose detergent and supply the loose detergent and water to one of the tub and the drum;
one or more valves configured to selectively provide water to the additive loading and supply system;
a receptacle configured to receive a unit dose package comprising a water soluble pouch containing a dose of cleaning product and supply the unit dose package to the tub; and
means for breaking the unit dose package positioned at a location inside the washing tub, and outside the receptacle and the drum;
wherein the means for breaking the unit dose package comprises a recirculation pump fluidly connected to the washing tub and configured to pump water from the washing tub and then back into the washing tub.

15. A laundry washing machine comprising:
a casing;
a washing tub located within the casing;
a drum mounted within the washing tub and configured to rotate relative to the tub;
a door attached to the casing and being openable to provide access to the drum;
an additive loading and supply system configured to receive loose detergent and supply the loose detergent and water to one of the tub and the drum;
one or more valves configured to selectively provide water to the additive loading and supply system;
a receptacle configured to receive a unit dose package comprising a water soluble pouch containing a dose of cleaning product and supply the unit dose package to the tub; and
means for breaking the unit dose package positioned at a location inside the washing tub, and outside the receptacle and the drum;
wherein the washing tub comprises a sump at a lower end thereof, and the means for breaking the unit dose package comprises a mixer located in the sump.

Assignees

• Electrolux Appliances AB

Inventors

• Romito Helena
• White Allison
• Li Yihong
• Madalena Oscar

Classifications

• D06F39/088

  Liquid supply arrangements · CPC title

• D06F37/28

  Doors; Security means therefor · CPC title

• D06F39/10

  Filtering arrangements · CPC title

• D06F33/00

  Control of operations performed in washing machines or washer-dryers  (D06F31/00 takes precedence; details of control systems therefor D06F34/00; control of operations performed in domestic laundry dryers D06F58/32) · CPC title

• D06F37/304

  Arrangements or adaptations of electric motors · CPC title