Control method of dual-drum washing machine

Patent metadata

Field	Value
Publication number	US-10233582-B2
Application number	US-201515535346-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Dec 12, 2014
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

A control method of a double-drum washing machine, having a first washing drum and a second washing drum. Whether the heating time required by the first drum is overlong is judged before the first drum performs heating. If yes, the second drum executes the heating, or dewatering, or drying processes. If not, the following steps are performed:
judging whether the second drum performs heating; if yes, judging whether the remaining heating time of the second washing drum is greater than T 0 ; if the judgment result is yes, executing the alternate heating program that the first drum and the second washing drum perform heating alternately, and if the judgment result is no, executing the ordered heating program that the second drum performs heating firstly, and then the first drum performs heating, wherein T 0 is a time value for judging whether the heating of the second drum is about to finish or not.

First claim

The invention claimed is:

1. A control method of a double-drum washing machine, the washing machine at least comprises a first washing drum and a second washing drum, wherein, whether a heating time required by the first washing drum is overlong or not is judged before the first washing drum performs heating, if yes, the second washing drum preferentially executes a heating, or a dewatering, or a drying process, if not, the following step is performed:
step S 101 : judging whether the second washing drum performs heating or not;
step S 102 : if yes, judging whether a remaining heating time of the second washing drum is greater than T 0 or not;
step S 103 : if yes, executing an alternate heating program that the first washing drum and the second washing drum perform heating alternately, and if not, executing an ordered heating program that the second washing drum performs heating firstly, and then the first washing drum performs heating,
wherein T 0 is a time value set in the method for judging whether a heating of the second washing drum is about to finish or not;
and wherein a judgement on whether the heating time required by the first washing drum is overlong or not comprises following judgement conditions:
a) whether a set heating temperature of the first washing drum is higher than a normal set temperature or not;
b) whether a water intake quantity of the first washing drum is greater than a common water intake quantity or not;
c) whether a difference of a set heating temperature value and a real-time measurement value of the first washing drum is greater than a difference of a set heating temperature value and a real-time measurement value of the second washing drum or not;
if all judgement results in a), b) and c) are not, determining that the heating time required by the first washing drum is not overlong; and
if any one of the judgement results in a), b) and c) is yes, determining that the heating time required by the first washing drum is overlong.

2. The control method of the double-drum washing machine according to claim 1 , wherein, the normal set temperature in the judgment condition a) accounts for 60%-90% of a maximum heating temperature set in a system.

3. The control method of the double-drum washing machine according to claim 1 , wherein, the common water intake quantity in the judgement condition b) accounts for 80%-95% of a maximum water intake quantity set in a system.

4. The control method of the double-drum washing machine according to claim 1 , wherein, the first washing drum is provided with a plurality of water intake water levels which correspond to different water intake quantities, the common water intake quantity corresponds to a common water intake water level, the common water intake water level is higher than a minimum water intake water level and lower than a maximum water intake water level,
a judgement according to the judgement condition b) is realized in the following manners:
judging whether a water intake water level set for the first washing drum is higher than the common water intake quantity or not,
if yes, determining that a water intake quantity set for the first washing drum is greater than the common water intake quantity, if not, determining that the water intake quantity set for the first washing drum is smaller than the common water intake quantity.

5. The control method of the double-drum washing machine according to claim 1 , wherein, when a judgement result of judging whether the heating time needed by the first washing drum is overlong is not, executes the following judgement:
it is judged whether the second washing drum is performing any one of the heating, or the dewatering, or the drying process, if yes, the first washing drum waits until the corresponding heating, or dewatering, or heating process of the second washing drum is completed and then to heat, If not, the first washing drum performs heating.

6. The control method of the double-drum washing machine according to claim 1 , wherein, a total heating time of the second washing drum is T m2 , and 0<T 0 ≤⅓T m2 .

7. The control method of the double-drum washing machine according to claim 1 , wherein, in the alternate heating program in step S 103 :
after a heating time interval of the first washing drum reaches T 1 , it is judged whether a temperature of the first washing drum is equal to a preset temperature, if yes, the first washing drum stops heating and the second washing drum keeps heating to a preset temperature, if not, the first washing drum pauses heating and the second washing drum heats,
after a heating time interval of the second washing drum reaches T 2 , it is judged whether a temperature of the second washing drum is equal to the preset temperature, if yes, the second washing drum stops heating and the first washing drum keeps heating to the preset temperature, if not, the second washing drum pauses heating and the first washing drum heats.

8. The control method of the double-drum washing machine according to claim 7 , wherein, T 1 and T 2 are respective minimum time intervals when the first washing drum and the second washing drum perform heating every time.

9. The control method of the double-drum washing machine according to claim 1 , wherein,
the first washing drum is independently provided with a first heating means for heating the first washing drum, and the second washing drum is independently provided with a second heating means for heating the second washing drum,
the first washing drum and the second washing drum are respectively provided with a first sensor and a second sensor for monitoring a water intake water level.

10. The control method of the double-drum washing machine according to claim 2 , wherein, the normal set temperature accounts for 70%-80% of the maximum heating temperature set in the system.

11. The control method of the double-drum washing machine according to claim 2 , wherein, the normal set temperature is 60° C.

12. The control method of the double-drum washing machine according to claim 3 , wherein, the common water intake quantity accounts for 95%-95% of the maximum water intake quantity set in the system.

13. The control method of the double-drum washing machine according to claim 3 , wherein, the first washing drum is provided with a plurality of water intake water levels which correspond to different water intake quantities, the common water intake quantity corresponds to a common water intake water level, the common water intake water level is higher than a minimum water intake water level and lower than a maximum water intake water level,
a judgement according to the judgement condition b) is realized in the following manners:
judging whether a water intake water level set for the first washing drum is higher than the common water intake quantity or not,
if yes, determining that a water intake quantity set for the first washing drum is greater than the common water intake quantity, if not, determining that the water intake quantity set for the first washing drum is smaller than the common water intake quantity.

14. The control method of the double-drum washing machine according to claim 6 , wherein, 0<T 0 ≤5 min.

15. The control method of the double-drum washing machine according to claim 8 , wherein T 1 is equal to T 2 .

Assignees

• Qingdao Haier Drum Washing Machine Co Ltd

Inventors

• Li Wenwei
• Wang Jinkai
• Chang Yuanyuan
• Wang Haibo

Classifications

• D06F29/00

  Combinations of a washing machine with other separate apparatus in a common frame or the like, e.g. with rinsing apparatus · CPC title

• D06F37/02

  Rotary receptacles, e.g. drums · CPC title

• D06F31/00 Primary

  Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies · CPC title

• D06F39/04

  Heating arrangements · CPC title

• D06F2204/04

  Textiles & Paper · mapped topic