Laundry treating appliance with bulky item detection

Patent metadata

Field	Value
Publication number	US-10995989-B2
Application number	US-201916247006-A
Country	US
Kind code	B2
Filing date	Jan 14, 2019
Priority date	Feb 19, 2009
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

A laundry treating appliance and method for controlling the operation of a laundry treating appliance having a rotatable drum at least partially defining a treating chamber for receiving laundry for treatment in accordance with a treating cycle of operation by determining the presence of a bulky laundry item based on image data of the laundry within the treating chamber.

First claim

What is claimed is:

1. A method for controlling an operation of a laundry treating appliance, the method comprising:
imaging laundry, within a treating chamber that is configured to receive laundry for treatment in accordance with a treating cycle of operation, to generate multiple images of a laundry load; and
determining, by a controller, a characteristic of the laundry load from the multiple images by processing image data from the multiple images with computer software stored on the controller of the laundry treating appliance to define a determined characteristic.

2. The method of claim 1 , further comprising determining, by the controller, at least one of size of the laundry load, color of the laundry load, or fabric type of the laundry load.

3. The method of claim 1 , further comprising setting at least one parameter of the treating cycle of operation based on the determined characteristic of the laundry load.

4. The method of claim 3 wherein the at least one parameter is one of a rotational speed of a drum, a direction of rotation of a drum, a temperature in the treating chamber, an air flow through the treating chamber, a type of treating chemistry dispensed by a dispenser, an amount of treating chemistry dispensed by a dispenser, a start of cycle condition, an end of cycle condition, a start of cycle step condition, an end of cycle step condition, a rotational speed of an agitator, a direction of rotation of an agitator, or a wash liquid fill level.

5. The method of claim 3 , further comprising selecting the treating cycle of operation based on the determined characteristic of the laundry load.

6. The method of claim 1 wherein the determining the characteristic of the laundry load from the multiple images comprises determining multiple load characteristics, each of the multiple load characteristics of the laundry load determined from the multiple images.

7. The method of claim 6 , further comprising setting at least one parameter of the treating cycle of operation based on at least one of the multiple load characteristics.

8. The method of claim 7 wherein the at least one parameter is one of a rotational speed of a drum, a direction of rotation of a drum, a temperature in the treating chamber, an air flow through the treating chamber, a type of treating chemistry dispensed by a dispenser, an amount of treating chemistry dispensed by a dispenser, a start of cycle condition, an end of cycle condition, a start of cycle step condition, an end of cycle step condition, a rotational speed of an agitator, a direction of rotation of an agitator, or a wash liquid fill level.

9. The method of claim 6 , further comprising selecting the treating cycle of operation based on at least one of the multiple load characteristics.

10. The method of claim 1 wherein the imaging laundry comprises the generating multiple images via one or more imaging devices.

11. The method of claim 10 wherein the generating multiple images comprises multiple imaging devices generating images of a same area of the treating chamber.

12. The method of claim 1 wherein determining the characteristic of the laundry load comprises analyzing the image data by isolating the laundry from a background.

13. The method of claim 1 wherein the imaging comprises capturing multiple digital images.

14. The method of claim 1 wherein the imaging laundry comprises taking at least one of a visible light image, an ultraviolet light image, or an infrared image.

15. The method of claim 1 wherein the determined characteristics includes one of a bulky item in the laundry load or an absence of a bulky item in the laundry load.

16. A method for controlling an operation of a laundry treating appliance, the method comprising:
imaging laundry, within a treating chamber that is configured to receive laundry for treatment in accordance with a treating cycle of operation, to generate multiple images of a laundry load; and
determining, by a controller, a set of characteristics of the laundry load from the multiple images, wherein each of the set of characteristics of the laundry load is determined from the multiple images by processing image data from the multiple images with computer software stored on the controller of the laundry treating appliance to define each of a set of determined characteristics.

17. The method of claim 16 , further comprising determining, by the controller, at least one of size of the laundry load, color of the laundry load, or fabric type of the laundry load.

18. The method of claim 16 , further comprising setting at least one parameter of the treating cycle of operation based on at least one of the set of determined characteristics of the laundry load.

19. The method of claim 18 wherein the at least one parameter is one of a rotational speed of a drum, a direction of rotation of a drum, a temperature in the treating chamber, an air flow through the treating chamber, a type of treating chemistry dispensed by a dispenser, an amount of treating chemistry dispensed by a dispenser, a start of cycle condition, an end of cycle condition, a start of cycle step condition, an end of cycle step condition, a rotational speed of an agitator, a direction of rotation of an agitator, or a wash liquid fill level.

20. The method of claim 18 , further comprising selecting the treating cycle of operation based on at least one of the set of determined characteristics of the laundry load.

Assignees

• Whirlpool Co

Inventors

• Ashrafzadeh Farhad
• Carow James P
• Kanchanavally Shreecharan

Classifications

• D06F2105/48

  Drum speed · CPC title

• F26B11/02 Primary

  in moving drums or other mainly-closed receptacles (F26B11/18 takes precedence) · CPC title

• D06F58/36 Primary

  Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry · CPC title

• D06F58/02

  having dryer drums rotating about a horizontal axis · CPC title

• D06F2105/20

  Temperature · CPC title