Laundry machine and washing method with steam for the same

• US 9,212,446 B2
• Filed: 02/28/2006
• Issued: 12/15/2015
• Est. Priority Date: 01/11/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Seog Kyu
• Primary Examiner(s): Perrin, Joseph L
• Assistant Examiner(s): Lee, Kevin G
• Application Number:
  US11/629,127
• Publication Number:
  US 20090139036A1
• Time in Patent Office: 3,577 Days
• Field of Search: 65/5.C, 65 1207- 1209, 65 15- 17, 652/07, 81491-1493, 68/5.C, 68 1207- 1209, 68 15- 17, 682/07
• US Class Current: 1/1
• CPC Class Codes: D06F 35/006 for washing or rinsing only
• CPC Class Codes: D06F 39/40 Steam generating arrangements

Abstract

Disclosed herein are a washing method and a laundry machine adopting the same, and more particularly, a steam washing method and a laundry machine that is capable of washing laundry only using steam and effectively performing a washing operation under the optimum operation condition. The steam washing method includes a selection step of allowing a user to select a steam washing course, in which a washing operation is performed only using steam, through an input unit, and an operation step of performing an operation based on the steam washing course while controlling at least one of a steam supply unit, a water supply unit, and a drum drive unit. The laundry machine includes an input unit for selecting a steam washing course, in which a washing operation is performed only using steam, among various washing courses, a steam supply unit for generating steam and supplying the generated steam to a tub or a drum, and a control unit for performing a control operation such that laundry received in the drum can be washed only using the steam when the steam washing course is inputted by the input unit.

Claims

1. A method of operating a laundry machine comprising:

sensing that a selected course at a first selector is a course using steam as an only water based substance entering a tub or a drum for cleaning the laundry from a plurality of courses which includes various washing courses for washing laundry using liquid water supplied into the tub or the drum;

enabling a steam generator to generate and supply steam to the tub or the drum; and

performing the selected course by using only the steam entering the tub or the drum for cleaning the laundry,

wherein, at the performing the selected course, an operation condition of the selected course is decided according to an initial factor, where the initial factor includes at least an initial interior temperature of the tub or the drum,

wherein the operation condition is decided depending upon a result of comparison between the initial interior temperature and a reference temperature range, and

the operation condition includes at least one of an operation progress temperature of the interior the tub or the drum and an operation progress time, in order to decide and control an amount of steam to be supplied to the tub or the drum,

wherein when the initial interior temperature is within the reference temperature range, the operation condition is decided based on the operation progress time, and when the initial interior temperature is out of the reference temperature range, the operation condition is decided based on the operation progress temperature.

2. The method according to claim 1, further comprises displaying on a display that the selected course is the course using steam or the course using steam is being performed.

3. The method according to claim 1, further comprises displaying on a display information corresponding to operation of the selected course using steam.

4. The method according to claim 1, further comprises disabling selection of functions not associated with at least one course using steam.

5. The method according to claim 1, the method further comprising:

determining the amount of laundry in the drum; and

causing the steam generator to generate steam in proportion to the determined amount of laundry.

6. The method according to claim 5, wherein determining the amount of laundry includes sensing an entry at an input device corresponding to the laundry amount.

7. The method according to claim 5, wherein determining the amount of laundry includes sensing the amount of laundry in the drum using a sensor.

8. The method according to claim 1, wherein the operation condition further includes at least one of the amount of water supplied to the steam generator, an interior temperature of the tub or the drum necessary to perform an operation based on the steam course, an operation time of the steam course and a steam supply cycle.

9. The method according to claim 1, wherein, when the operation condition is decided based on the operation progress temperature, an amount of steam is supplied to the tub or the drum until an interior temperature of the tub or the drum reaches the operation progress temperature.

10. The method according to claim 9, wherein the operation progress temperature is decided such that the operation progress temperature is increased in proportion to an increase in the load amount of the laundry.

11. The method according to claim 1, wherein, when the operation condition is decided based on the operation progress time, steam is supplied to the tub or the drum for a duration equal to the operation progress time.

12. The method according to claim 11, wherein the operation progress time is decided such that the operation progress time is increased in proportion to an increase in the load amount of the laundry.

13. The method according to claim 1, wherein the operation condition includes an operation progress temperature when the initial interior temperature is out of the reference temperature range.

14. The method according to claim 13, wherein the operation progress temperature, depends upon a load amount of the laundry.

15. The method according to claim 1, further comprises tumbling the laundry in the tub or the drum.

16. The method according to claim 15, further comprises starting the tumbling of the laundry in the tub or the drum before the steam is supplied to the tub or the drum.

17. The method according to claim 15, further comprises terminating the tumbling of the laundry in the tub or the drum after the steam is supplied to the tub or the drum.

18. The method according to claim 15, further comprises tumbling the laundry in the tub or the drum clockwise and counter clockwise based on a predetermined time cycle.

19. The method according to claim 1, further comprising:

sensing water in the tub or the drum; and

draining water in the tub or the drum when the water reaches a predetermined level.

20. The method according to claim 1, further comprises draining water formed in the tub or the drum.

21. The method according to claim 1, further comprises tumbling the tub or the drum after the selected course is terminated and until a door of the laundry machine is opened.

22. The method according to claim 1, wherein the operation condition includes the operation progress time when the initial interior temperature is within the reference temperature range.

23. The method according to claim 22, wherein operation progress time depends upon a load amount of the laundry.

24. The method according to claim 22, wherein the reference temperature range is 10 to 30°

C.

25. A laundry machine comprising:

a steam generator to generate steam;

a first selector to select a course using steam as an only water based substance entering a tub or a drum for cleaning the laundry from a plurality of courses which includes various washing courses for washing laundry using liquid water supplied into the tub or the drum; and

a controller configured to decide an operation condition and the selected course, wherein the controller is configured to enable the steam generator to generate steam so that only the steam is supplied to the tub or the drum for cleaning the laundry when the selector indicates to the controller that the selected course is a course using steam,

wherein, at the performing the selected course, the operation condition of the selected course is decided according to an initial factor, where the initial factor includes at least an initial interior temperature of the tub or the drum, wherein the operation condition is decided depending upon a result of comparison between the initial interior temperature and a reference temperature range, and the operation condition includes at least one of an operation progress temperature of the interior the tub or the drum and an operation progress time, in order to control an amount of steam to be supplied to the tub or the drum, and

wherein when the initial interior temperature is within the reference temperature range, the operation condition is decided based on the operation progress time, and when the initial interior temperature is out of the reference temperature range, the operation condition is decided based on the operation progress temperature.

26. The laundry machine according to claim 25, further comprises a display to display that the selected course is the course using steam or the course using steam is being performed.

27. The laundry machine according to claim 25 further comprises a display to display information corresponding to operation of the selected course using steam.

28. The laundry machine according to claim 25, wherein the controller is configured to disable at least a second selector so that a selection of a function not associated with at least one course using steam is disabled.

29. The laundry machine according to claim 25, further comprising:

an input device to enter a value corresponding to an amount of laundry in the drum; and

the controller configured to determine the amount of laundry based on an entry at the input device.

30. The laundry machine according to claim 25, further comprising:

a first sensor to sense an amount of laundry the drum; and

the controller configured to determine the amount of laundry based on sensed laundry amount.

31. The laundry machine according to claim 25, wherein the operation condition includes at least one of the amount of water supplied to the steam generator, an interior temperature of the tub or the drum necessary to perform an operation based on the steam course, and an operation time of the steam course.

32. The laundry machine according to claim 25, further comprising:

a second sensor to sense an interior temperature of the tub or the drum.

33. The laundry machine according to claim 25, further comprising:

a motor coupled to the tub or the drum; and

the controller configured to drive the motor so that the laundry is tumbled in the tub or the drum.

34. The laundry machine according to claim 33, wherein the controller is configured to drive the motor so that the laundry is tumbled in the tub or the drum before the steam is supplied to the tub or the drum.

35. The laundry machine according to claim 33, wherein the controller is configured to drive the motor so that the tumbling of the laundry is terminated after the steam is supplied to the tub or the drum.

36. The laundry machine according to claim 33, wherein the controller is configured to drive the motor to tumble the laundry in the tub or the drum clockwise and counter clockwise based on a predetermined time cycle.

37. The laundry machine according to claim 25, further comprising:

a third sensor to sense a water level in the tub or the drum; and

the controller configured to enable a drain valve to drain water in the tub or the drum when the water reaches a predetermined level.

38. The laundry machine according to claim 25, further comprises a drain to drain water formed in the tub or the drum.

39. The laundry machine according to claim 33, wherein the controller is configured to drive the motor so that the laundry is tumbled in the tub or the drum after the selected course is terminated and until a door of the laundry machine is opened.

40. A method of operating a laundry machine comprising:

sensing that a selected course at a first selector is a course using steam as an only water based substance entering a tub or a drum for cleaning the laundry from a plurality of courses which includes various washing courses for washing laundry using liquid water supplied into the tub or the drum;

enabling a steam generator to generate and supply steam to the tub or the drum;

performing the selected course by using only the steam entering the tub or the drum for cleaning the laundry,

wherein, at the performing the selected course, an operation condition of the selected course is decided according to an initial factor, where the initial factor includes at least an initial interior temperature of the tub or the drum,

wherein when the initial factor is the initial interior temperature of the tub or the drum, the operation condition is decided depending upon a result of comparison between the initial interior temperature and a reference temperature range,

wherein the operation condition includes at least one of an operation progress temperature interior of the tub or the drum and an operation progress time, in order to decide and control an amount of steam to be supplied to the tub or the drum;

wherein when the initial interior temperature is within the reference temperature range, the operation condition is decided based on the operation progress time, and when the initial interior temperature is out of the reference temperature range, the operation condition is decided based on the operation progress temperature,

wherein, when the operation condition is decided based on the operation progress temperature, an amount of steam is supplied to the tub or the drum until an interior temperature of the tub or the drum reaches the operation progress temperature,

wherein the operation progress temperature is decided such that the operation progress temperature is increased in proportion to an increase in the load amount of the laundry.

41. A method of operating a laundry machine comprising:

sensing that a selected course at a first selector is a course using steam as an only water based substance entering a tub or a drum for cleaning the laundry from a plurality of courses which includes various washing courses for washing laundry using liquid water supplied into the tub or the drum;

enabling a steam generator to generate and supply steam to the tub or the drum;

performing the selected course by using only the steam entering the tub or the drum for cleaning the laundry, wherein, at the performing the selected course, an operation condition of the selected course is decided according to an initial factor, where the initial factor includes at least an initial interior temperature of the tub or the drum,

wherein when the initial factor is the initial interior temperature of the tub or the drum, the operation condition is decided depending upon a result of comparison between the initial interior temperature and a reference temperature range, and

the operation condition includes at least one of an operation progress temperature interior of the tub or the drum and an operation progress time, in order to decide and control an amount of steam to be supplied to the tub or the drum;

wherein when the initial interior temperature is within the reference temperature range, the operation condition is decided based on the operation progress time, and when the initial interior temperature is out of the reference temperature range, the operation condition is decided based on the operation progress temperature,

wherein, when the operation condition is decided based on the operation progress time, steam is supplied to the tub or the drum for a duration equal to the operation progress time,

wherein the operation progress time is decided such that the operation progress time is increased in proportion to an increase in the load amount of the laundry.