Control method of a double-drum washing machine

Patent metadata

Field	Value
Publication number	US-10570545-B2
Application number	US-201515534980-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Dec 12, 2014
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

A double-drum washing machine has a first washing drum and a second washing drum. A control method comprises water intake and drainage control and high-power process control, wherein the water intake and drainage control comprises water intake control and water drainage control; the first washing drum judges whether to reuse drained water of the second washing drum before executing a water intake process and judges whether to enable the drained water to be drained into the second washing drum and reuse the water or not before executing a water drainage process; and the high-power process control is used for controlling any one of a heating process, a dewatering process and a drying process of the first washing drum and any one of a heating process, a dewatering process and a drying process of the second washing drum not to be executed at the same time.

First claim

The invention claimed is:

1. A control method of a double-drum washing machine, the washing machine at least comprising a first washing drum and a second washing drum, wherein the control method comprises a water intake and drainage control and a high-power process control,
the water intake and drainage control comprises a water intake control and a water drainage control;
judging whether to reuse drained water of the second washing drum or not in the first washing drum before executing a water intake process according to a turbidity value or a foam concentration value of the drained water; and
judging whether to enable the drained water from the first washing drum to be drained into the second washing drum and reuse the drained water or not before executing a water drainage process according to the turbidity value or the foam concentration value of the drained water;
and the high-power process control is used for controlling any one of a heating process, a dewatering process and a drying process of the first washing drum and any one of a heating process, a dewatering process and a drying process of the second washing drum not to be executed at the same time.

2. The control method of the double-drum washing machine according to claim 1 , wherein the water intake control of the water intake and drainage control comprises:
comparing a time T 22 that the second washing drum waits for an execution of the water drainage process with a time T 21 that the first washing drum waits for an execution of a next water intake process before the first washing drum executes the water intake process,
if T 22 ≥T 21 , pure water is directly supplied into the first washing drum,
and if T 22 ≤T 21 , enabling the first washing drum to wait until the second washing drum performs water drainage.

3. The control method of the double-drum washing machine according to claim 2 wherein, it is judged whether water in the second washing drum can be reused or not before comparing the time T 22 that the second washing drum waits for the execution of the water drainage process with the time T 21 that the first washing drum waits for the execution of the next water intake process,
if not, the pure water is directly supplied into the first washing drum, and if yes, it is compared the time T 22 that the second washing drum waits for the execution of the water drainage process with the time T 21 that the first washing drum waits for the execution of the next water intake process;
or it is judged whether water in the second washing drum can be reused or not when the first washing drum waits until the second washing drum performs water drainage, if not, the pure water is directly supplied into the first washing drum, and if yes, enabling the water in the second washing drum to be drained into the first washing drum, and reusing the water.

4. The control method of the double-drum washing machine according to claim 1 , wherein the water drainage control of the water intake and drainage control comprises: it is compared a time T 12 that the second washing drum waits for an execution of the water intake process with a time T 11 that the first washing drum waits for an execution of a next water drainage process before the first washing drum executes the water drainage process,
if T 12 <T 11 , enabling the first washing drum to wait until the second washing drum performs water intake, and if T 12 ≥T 11 , enabling water in the first washing drum to be directly drained.

5. The water drainage control method of the double-drum washing machine according to claim 4 , wherein it is judged whether the water in the first washing drum can be reused or not before comparing the time T 12 that the second washing drum waits for the execution of the water intake process with the time T 11 that the first washing drum waits for the execution of the next water drainage process,
if not, enabling the water in the first washing drum to be directly drained, and if yes, it is compared the time T 12 that the second washing drum waits for the execution of the water intake process with the time T 11 that the first washing drum waits for the execution of the next water drainage process;
or it is judged whether the water in the first washing drum can be reused or not when the first washing drum waits until the second washing drum performs water intake, if not, enabling the water in the first washing drum to be directly drained, and if yes, enabling the water in the first washing drum to be drained into the second washing drum, and reusing the water.

6. The control method of the double-drum washing machine according to claim 1 , wherein the high-power process control comprises: a heating process control, a dewatering process control and a drying process control,
and the high-power process control controls the second washing drum not to execute any one of the heating process, the dewatering process and the drying process at the same time when the first washing drum executes the heating process,
and controls the second washing drum not to execute any one of the dewatering process, the drying process and the heating process at the same time when the first washing drum executes the dewatering process,
and controls the second washing drum not to execute any one of the drying process, the heating process and the dewatering process at the same time when the first washing drum executes the drying process.

7. The control method of the double-drum washing machine according to claim 6 , wherein the heating process control of the high-power process control comprises:
step S 21 : enabling the first washing drum to perform heating;
step S 22 : judging whether the second washing drum is performing heating or not;
step S 23 : if yes, judging whether a remaining heating time of the second washing drum is greater than T 0 or not;
step S 24 : if yes, executing an alternate heating program that the first washing drum and the second washing drum perform heating alternately, 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 by a system and used for judging whether the second washing drum is about to finish heating or not.

8. The control method of the double-drum washing machine according to claim 7 , wherein if a judgement result in the step S 22 is not, performing the following steps:
it is judged whether any one of the dewatering process and the drying process is executed by the second washing drum or not,
if yes, enabling the first washing drum to start to perform heating after the second washing drum finishes the dewatering process or the drying process,
if not, enabling the first washing drum to directly start to perform heating.

9. The control method of the double-drum washing machine according to claim 7 , wherein before performs the step S 21 in the heating process control of the high-power process control, performs judgement as follows:
it is judged whether a heating time required by the first washing drum is overlong or not, if yes, enabling the second washing drum to preferentially execute the heating, or dewatering, or drying process, if not, performing the step S 21 .

10. The control method of the double-drum washing machine according to claim 9 , wherein a step of judging whether the heating time required by the first washing drum is overlong or not comprises the 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) wh

Assignees

• Qingdao Haier Drum Washing Machine Co Ltd

Inventors

• Li Wenwei
• Wang Jinkai
• Wu Jun
• Chang Yuanyuan

Classifications

• D06F29/005 Primary

  the other separate apparatus being a drying appliance · CPC title

• D06F29/02

  with liquid-extracting apparatus (with roller wringer D06F45/12) · CPC title

• D06F31/00

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

• D06F37/04

  adapted for rotation or oscillation about a horizontal or inclined axis · CPC title

• D06F2204/04

  Textiles & Paper · mapped topic