Control method of laundry treatment apparatus

Patent metadata

Field	Value
Publication number	US-10385495-B2
Application number	US-201615552700-A
Country	US
Kind code	B2
Filing date	Feb 22, 2016
Priority date	Feb 23, 2015
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

A control method of a laundry treatment apparatus that includes a first treatment device that has a first load unit and that is configured to treat laundry and a second treatment device that has a second load unit and that is configured to treat laundry includes the action of executing a first cycle in the first treatment device by supplying electric power to the first load unit. The actions include executing a second cycle in the second treatment device by supplying electric power to the second load unit. The actions further include reducing power consumption by terminating the second cycle in the second treatment device and executing a third cycle in the second treatment device, the third cycle being different than the second cycle. The actions further include terminating the first cycle in the first treatment device. The actions further include terminating the third cycle in the second treatment device.

First claim

The invention claimed is:

1. A control method of a laundry treatment apparatus comprising a first treatment device that has a first load unit and that is configured to treat laundry and a second treatment device that has a second load unit and that is configured to treat laundry, the control method comprising:
executing a first cycle in the first treatment device by supplying electric power to the first load unit;
while executing the first cycle in the first treatment device, executing a second cycle in the second treatment device by supplying electric power to the second load unit;
based on an amount of current per unit time that is supplied to the laundry treatment apparatus being equal to or greater than a predetermined reference current amount, terminating the second cycle in the second treatment device and executing a third cycle in the second treatment device, the third cycle requiring a lower amount of current per unit time than that necessary to execute the second cycle;
terminating the first cycle in the first treatment device;
terminating the third cycle in the second treatment device and repeating the second cycle in the second treatment device;
terminating the repeated second cycle in the second treatment device based on:
the repeated second cycle in the second treatment device executing for at least a predetermined second cycle reference time;
a sum of an execution time of the second cycle in the second treatment device and an execution time of the repeated second cycle in the second treatment device being equal to or greater than the predetermined second cycle reference time; or
the sum of the execution time of the second cycle in the second treatment device and the execution time of the repeated second cycle in the second treatment device being equal to or greater than a sum of a predetermined additional time and the predetermined second cycle reference time.

2. The control method according to claim 1 , further comprising setting the predetermined second cycle reference time before executing the second cycle in the second treatment device.

3. The control method according to claim 1 , wherein the predetermined additional time is proportional to an execution time of the third cycle in the second treatment device or inversely proportional to an execution time of the second cycle in the second treatment device.

4. The control method according to claim 1 , further comprising:
after terminating the first cycle in the first treatment device and while repeating the second cycle in the second treatment device, repeating the first cycle in the first treatment device or executing a fourth cycle that is different from the first cycle in the first treatment device.

5. The control method according to claim 4 , further comprising:
based on the amount of current per unit time that is supplied to the laundry treatment apparatus being equal to or greater than the predetermined reference current amount (i) during execution of the repeated second cycle in the second treatment device and (ii) during execution of the repeated first cycle in the first treatment device or execution of the fourth cycle:
terminating the repeated second cycle in the second treatment device; and
repeating the third cycle in the second treatment device.

6. The control method according to claim 5 , further comprising:
terminating the repeated first cycle in the first treatment device or the fourth cycle; and
terminating the repeated third cycle in the second treatment device and executing a second repetition of the second cycle in the second treatment device.

7. The control method according to claim 6 , further comprising:
terminating the second repetition of the second cycle in the second treatment device based on the second repetition of the second cycle in the second treatment device executing for at least the predetermined second cycle reference time.

8. The control method according to claim 6 , further comprising:
terminating the second repetition of the second cycle in the second treatment device based on a sum of the execution time of the second cycle in the second treatment device, the execution time of the repeated second cycle in the second treatment device, and the execution time of the second repetition of the second cycle in the second treatment device is at least the predetermined second cycle reference time.

9. The control method according to claim 6 , further comprising:
terminating the second repetition of the second cycle in the second treatment device based on a sum of the execution time of the second cycle in the second treatment device, the execution time of the repeated second cycle in the second treatment device, and the execution time of the second repetition of the second cycle in the second treatment device is at least a sum of a predetermined additional time and the predetermined second cycle reference time.

10. The control method according to claim 9 , wherein the additional time is proportional to one of an execution time of the third cycle in the second treatment device or an execution time of the repeated third cycle in the second treatment device.

11. The control method according to claim 9 , wherein the additional time is inversely proportional to one of the execution time of the second cycle in the second treatment device or the execution time of the repeated second cycle in the second treatment device.

12. The control method according to claim 1 , wherein the amount of current per unit time that is supplied to the laundry treatment apparatus is an amount of current per unit time that is supplied to the first treatment device.

13. The control method according to claim 12 , wherein the reference current amount is one of:
an amount of current per unit time necessary for a first heat exchange unit that is located in the first load unit to heat a fluid, or
an amount of current per unit time necessary for a second heat exchange unit that is located in the first load unit to heat a gas.

14. The control method according to claim 1 , wherein the amount of current per unit time that is supplied to the laundry treatment apparatus is a sum of an amount of current per unit time that is supplied to the first treatment device and an amount of current per unit time that is supplied to the second treatment device.

15. The control method according to claim 1 , wherein the first treatment device is configured to treat a heavier load of laundry than the second treatment device.

16. The control method according to claim 1 , wherein the first cycle in the first treatment device and the second cycle in the second treatment device begin execution at different times.

17. The control method according to claim 1 , wherein the first cycle in the first treatment device and the second cycle in the second treatment device begin execution simultaneously.

18. The control method according to claim 1 , wherein terminating the repeated second cycle in the second treatment device occurs based on the repeated second cycle in the second treatment device executing for at least the predetermined second cycle reference time.

19. The control method according to claim 1 , wherein terminating the repeated second cycle in the second treatment device occurs based on the sum of the execution time of the second cycle in the second treatment device and the execution time of the repeated second cycle in the second treatment device being equal to or greater than the predetermined second cycle reference time.

20. The control method according to

Assignees

• Lg Electronics Inc

Inventors

• Heo Kwangchul

Classifications

• D06F2103/44

  Current or voltage · CPC title

• D06F58/36

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

• D06F34/10

  Power supply arrangements, e.g. stand-by circuits · CPC title

• D06F33/47

  Responding to irregular working conditions, e.g. malfunctioning of pumps  (safety arrangements D06F37/42) · CPC title

• D06F33/30 Primary

  Control of washing machines characterised by the purpose or target of the control  (controlling processes of washer-dryers D06F33/50) · CPC title