CN112127099A - Dewatering control method and control device of washing machine - Google Patents
Dewatering control method and control device of washing machine Download PDFInfo
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Abstract
The invention discloses a dehydration control method and a dehydration control device for a washing machine. A dehydration control method of a washing machine includes the steps of: detecting the weight of the clothes to be washed in the washing machine; detecting the water content of the clothes to be dehydrated in the washing machine; setting dehydration parameters according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated; and controlling the washing machine to dewater according to the dewatering parameters. The dehydration control method can reduce the influence of barrel collision and box collision caused by resonance in the dehydration acceleration process of the washing machine to a certain extent, improve the user experience, save resources and improve the efficiency.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a dehydration control method and a dehydration control device for a washing machine.
Background
At present, the dehydration process of the washing machine is carried out according to the processes of intermittent dehydration, continuous dehydration, inertial dehydration, braking (non-frequency conversion) or low-speed, high-speed, inertial dehydration and braking (frequency conversion). Due to the resonance phenomenon, the phenomenon that the tank body is collided by the bucket in different degrees can occur in the dehydration acceleration stage and the dehydration deceleration stage, and great noise is caused, so that the abrasion of the bucket body is easily caused, and the life of people can be influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to provide a dehydration control method of a washing machine, which controls the washing machine to perform dehydration using different dehydration parameters according to the weight of laundry and the water content of the laundry to be dehydrated. Another object of the present invention is to provide a dehydration control apparatus of a washing machine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dehydration control method of a washing machine includes the steps of: detecting the weight of the clothes to be washed in the washing machine; detecting the water content of the clothes to be dehydrated in the washing machine; setting dehydration parameters according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated; and controlling the washing machine to dewater according to the dewatering parameters.
According to the scheme, firstly, the washing machine detects the weight of the clothes to be washed and the water content of the clothes to be dehydrated according to a certain way, then the dehydration parameters are set according to the detected weight of the clothes to be washed and the water content of the clothes to be dehydrated, and the washing machine is controlled to dehydrate according to the set parameters.
According to a further aspect of the invention, the dehydration parameters comprise the dehydration initial rotation speed, and/or the dehydration initial rotation speed duration, and/or the final dehydration rotation speed.
The method comprises the further scheme that if the water content of the clothes to be dehydrated in different batches is the same, the weights of the clothes to be washed in different batches are respectively G1, G2 and G3, G1 is more than G2 and less than G3, the corresponding initial dehydrating rotating speeds are selected to be Vo1, Vo2 and Vo3, and Vo1 is more than Vo2 and less than Vo 3.
According to the further scheme of the invention, the corresponding dehydration initial rotating speed durations are respectively T1, T2 and T3, and T1> T2> T3.
According to the further scheme of the invention, the corresponding final dehydration rotating speeds are selected to be V1, V2 and V3 respectively, and V1 is more than V2 and less than V3.
In the above scheme, when the moisture content of the clothes to be dehydrated in different batches is the same, the lower the weight of the clothes to be washed is, the lower the dehydration initial rotation speed is, the longer the dehydration initial rotation speed duration is, and the lower the final dehydration rotation speed is. Therefore, clothes with the same water content are selected to have different initial dehydration rotating speeds, initial dehydration rotating speed duration and final dehydration rotating speeds according to different weights, so that the clothes in the washing machine barrel can be better leveled in the dehydration and acceleration processes, and the influence of barrel collision in the dehydration process is reduced to a certain extent.
The further scheme of the invention is that if the water content of the clothes to be dehydrated in different batches is the same, when the weight of the clothes to be washed is detected to be G1, the washing machine operates for T1 time at the initial dehydration rotating speed Vo1 and then is accelerated to the final dehydration rotating speed V1 for dehydration; when the weight of the clothes to be washed is G2, the washing machine operates for T2 time at the initial dehydration rotation speed Vo1 and then increases the speed to Vo2, and operates for T2 time and then increases the speed to the final dehydration rotation speed V2 for dehydration; when the weight of the clothes to be washed is G3, the washing machine operates at the dewatering initial rotating speed Vo1 for T3 time and then increases the speed to Vo2, continues to operate for T3 time and then increases the speed to Vo3, continues to operate for T3 time and then increases the speed to the final dewatering rotating speed V3 for dewatering; wherein G1< G2< G3, Vo1< Vo2< Vo3, T1> T2> T3, V1< V2< V3.
In the scheme, when a small amount of clothes to be washed is available, the clothes are directly accelerated to the final dehydration rotating speed for dehydration after running for a long time at the lower dehydration initial rotating speed; when the clothes to be washed are more, a first-gear or second-gear lower speed can be set between the initial dehydration rotating speed and the final dehydration rotating speed to run for a shorter time, and the speed is increased step by step, so that the clothes in the barrel can be better leveled, and the dehydration can be carried out more stably.
The further scheme of the invention is that if the weights of different batches of clothes to be washed are the same, the moisture contents of the clothes to be dehydrated are detected to be P1, P2 and P3 respectively, and P1> P2> P3, the corresponding initial dehydration rotating speeds are selected to be Vo1, Vo2 and Vo3 respectively, Vo1< Vo2< Vo3, the durations of the corresponding initial rotating speeds are selected to be T1, T2 and T3 respectively, and T1> T2> T3 respectively.
According to a further aspect of the present invention, the corresponding final dewatering rotation speeds are selected to be V1, V2, and V3, respectively, and V1 ═ V2 ═ V3.
In the above scheme, when the weights of the clothes to be washed in different batches are the same, the higher the water content is, the lower the dehydration initial rotating speed is, the longer the dehydration initial rotating speed lasts, and the final dehydration rotating speeds are the same. Therefore, clothes with the same weight can be better leveled with the clothes in the washing machine barrel in the dehydration acceleration process by selecting different dehydration initial rotating speeds and different dehydration initial rotating speed durations according to different water contents, and the influence of barrel collision in the dehydration process is reduced to a certain extent.
In order to achieve the above object, the present invention further provides a dehydration control device for a washing machine, comprising an obtaining module for obtaining the weight of the laundry and the moisture content of the laundry; and the control module is connected with the acquisition module, acquires the dehydration parameters of the clothes according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated, and controls the washing machine to dehydrate according to the dehydration parameters.
In a further aspect of the invention, the acquisition module comprises a weighing module, or a combination of a weighing module and a flow reading module.
According to the dehydration control device of the washing machine, the weight of the clothes to be washed and the water content of the clothes to be dehydrated are obtained through the obtaining module, the control module obtains the dehydration parameters of the clothes according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated, and the washing machine is controlled to be dehydrated according to the dehydration parameters. The acquisition module may only include a weighing module, or may be a combination of a weighing module and a flow reading module.
After the technical scheme of the invention is adopted, the following beneficial effects are brought:
according to the dehydration control method of the washing machine, the dehydration parameters are set according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated, and the washing machine is controlled to dehydrate according to the dehydration parameters, so that the influence of barrel collision and box collision caused by resonance in the dehydration and acceleration processes of the washing machine can be reduced to a certain extent, the user experience is improved, the resources can be saved, and the efficiency is improved.
Drawings
FIG. 1: the flow chart of the dewatering control method of the washing machine in the embodiment of the invention;
FIG. 2: the invention discloses a block schematic diagram of a dehydration control device of a washing machine.
Detailed Description
In order that the above objects, features and advantages of the present invention will become more apparent, the following detailed description of the present invention is given in conjunction with the accompanying drawings and the detailed description of the invention, which are intended to illustrate, but not to limit the present invention.
Fig. 1 is a flowchart of a dehydration control method of a washing machine according to an embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:
detecting the weight of the clothes to be washed in the washing machine;
detecting the water content of the clothes to be dehydrated in the washing machine;
setting dehydration parameters according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated;
and controlling the washing machine to dewater according to the dewatering parameters.
Specifically, the operation process of the washing machine may include a main washing stage, a rinsing stage, and a dehydrating stage. In the dehydration stage, the variable frequency washing machine is operated according to the procedures of low speed, high speed, inertial dehydration and braking, and the parameters can be set according to the requirements.
According to an embodiment of the present invention, before the main washing stage is filled with water, the weight of the laundry may be determined by fuzzy weighing; and after the drainage is finished and before the dehydration starts, determining the weight of the clothes to be dehydrated through fuzzy weighing, wherein the difference value between the weight of the clothes to be dehydrated and the weight of the clothes to be washed is the water content of the clothes in the barrel, and the water content is divided by the weight of the clothes to be washed to obtain the water content of the clothes in the barrel.
According to another embodiment of the present invention, the water content of the laundry in the tub can be obtained by setting a flow meter in the tub, reading the flow rate at the time of water intake and the flow rate at the time of water discharge through the flow meter, and calculating the difference.
According to an embodiment of the present invention, the control device of the washing machine may set a dehydration parameter according to the detected weight of the laundry and the water content of the laundry to be dehydrated and control the washing machine to perform dehydration according to the parameter.
According to an embodiment of the invention, the dewatering parameters comprise a dewatering initial rotational speed, and/or a dewatering initial rotational speed duration, and/or a final dewatering rotational speed.
Specifically, in the dewatering stage of the washing machine, a speed climbing process is carried out at the beginning, the initial dewatering rotating speed refers to the rotating speed reached by rapidly increasing the speed of the inner barrel in a short time when the dewatering just starts, the final dewatering rotating speed is reached after the inner barrel is operated for a period of time after the inner barrel reaches the rotating speed, and the duration time of the initial dewatering rotating speed refers to the time for the washing machine to continuously operate at the rotating speed after the inner barrel reaches the rotating speed; the final dewatering rotation speed is the rotation speed of the washing machine in the high-speed dewatering stage.
According to one embodiment of the invention, if the water content of different batches of clothes to be dehydrated is the same, the weights of the different batches of clothes to be dehydrated are respectively G1, G2 and G3, G1< G2< G3 are detected, the corresponding dehydration initial rotating speeds are selected to be Vo1, Vo2 and Vo3, and Vo1< Vo2< Vo 3; selecting the corresponding dehydration initial rotating speed durations as T1, T2, T3, T1> T2> T3; selecting the corresponding final dewatering rotating speeds to be V1, V2 and V3 respectively, wherein V1< V2< V3.
Specifically, clothes of different materials have different water contents. For example: the water content of the jeans is about 150% if the weight of the clothes to be washed is 1.545kg and the weight of the clothes to be dehydrated is 3.86 kg; the water content of the cotton clothes is about 200% if the weight of the clothes to be washed is 1.535kg and the weight of the clothes to be dehydrated is 4.585 kg. The moisture content is the same, which means that specific values of the moisture content of different batches of clothes to be dehydrated belong to the same interval value, and the moisture content is not a specific value but an interval value. According to the strength of the water absorption of the clothes, the water content can be set to be three grades, namely high grade, medium grade and low grade, which respectively correspond to P1, P2 and P3, P1 can be set to be more than 220%, P2 can be set to be more than or equal to 180% and less than or equal to P2 and less than 220%, and P3 can be set to be less than 180%. For example, if the moisture content of a certain batch of clothes is 175%, and the moisture content of another batch of clothes is 155%, the specific values of the moisture contents of the two batches of clothes are different, but the two values both belong to the same interval, i.e., less than 180%, the moisture contents of the two batches of clothes are considered to be the same. According to the different percentage of the weight of the clothes to be washed in the maximum washing capacity of the washing machine, the weight of the clothes to be washed is judged to be small, medium or large, and respectively corresponds to G1, G2 and G3. The initial speed of dehydration is relatively low, generally 50-100rpm, for example, Vo1, Vo2 and Vo3 can be set as 50rpm, 70rpm and 100rpm respectively. The duration of the initial spin speed is also relatively short, typically 30-60 seconds, for example, T1, T2, T3 can be set to 60 seconds, 40 seconds, 30 seconds, respectively. In view of minimizing wrinkles, the final dehydration speed is generally 600-1000rpm, for example, V1, V2, V3 can be set to 600rpm, 800rpm, 1000rpm, respectively; the final dewatering speed can also be higher than 1000rpm, if desired. That is, when the moisture content of the laundry to be dehydrated is the same for different batches, the lower the weight of the laundry, the lower the dehydration initial rotation speed, and the longer the dehydration initial rotation speed duration, the lower the final dehydration rotation speed. Therefore, clothes with the same water content are selected to have different initial dehydration rotating speeds, initial dehydration rotating speed duration and final dehydration rotating speeds according to different weights, so that the clothes in the washing machine barrel can be better leveled in the dehydration and acceleration processes, and the influence of barrel collision in the dehydration process is reduced to a certain extent.
According to an embodiment of the invention, if the water content of the clothes to be dehydrated in different batches is the same, when the weight of the clothes to be washed is detected to be G1, the washing machine operates for T1 time at the initial dehydration rotating speed Vo1 and then accelerates to the final dehydration rotating speed V1 for dehydration; when the weight of the clothes to be washed is G2, the washing machine operates for T2 time at the initial dehydration rotation speed Vo1 and then increases the speed to Vo2, and operates for T2 time and then increases the speed to the final dehydration rotation speed V2 for dehydration; when the weight of the clothes to be washed is G3, the washing machine operates at the dewatering initial rotating speed Vo1 for T3 time and then increases the speed to Vo2, continues to operate for T3 time and then increases the speed to Vo3, continues to operate for T3 time and then increases the speed to the final dewatering rotating speed V3 for dewatering; wherein G1< G2< G3, Vo1< Vo2< Vo3, T1> T2> T3, V1< V2< V3.
Specifically, if the moisture content of the clothes to be dehydrated in different batches is the same, when the amount of the clothes to be dehydrated is small, the clothes are dehydrated by increasing the speed to the final dehydration rotating speed after the clothes are operated for a relatively long time at a relatively low dehydration initial rotating speed, and when the amount of the clothes to be washed is large, the clothes can be further increased step by setting one-step or two-step relatively low speed between the dehydration initial rotating speed and the final dehydration rotating speed and operating for a relatively short time. For example, when the laundry is small, the laundry is dehydrated by operating at the dehydration initial rotation speed of 50rpm for 60 seconds and then increasing to the final dehydration rotation speed of 600 rpm; when the clothes to be washed are medium, the speed is increased to 70rpm after the clothes are operated for 40 seconds at the initial dehydration speed of 50rpm, and then the clothes are dehydrated after the clothes are operated for 40 seconds at the speed of 70rpm and the final dehydration speed of 800 rpm; when the laundry is in a large amount, the laundry is spun up to 70rpm after being operated for 30 seconds at the initial spinning speed of 50rpm, then spun up to 100rpm after being operated for 30 seconds at the speed of 70rpm, and then spun up to the final spinning speed of 1000rpm after being operated for 30 seconds at the spinning speed of 100 rpm. Therefore, according to the increase of the weight of the clothes, all parameters are increased or decreased step by step, the clothes in the barrel can be better leveled, the dehydration can be carried out more stably, and the influence of barrel collision can be effectively reduced.
According to an embodiment of the invention, if the weights of different batches of clothes to be washed are the same, the moisture contents of the clothes to be dehydrated are detected to be P1, P2 and P3 respectively, and P1> P2> P3, the corresponding dehydration initial rotating speeds are selected to be Vo1, Vo2 and Vo3 respectively, and Vo1< Vo2< Vo3, the durations of the corresponding initial rotating speeds are selected to be T1, T2 and T3 respectively, and T1> T2> T3; and selecting the corresponding final dewatering rotating speeds as V1, V2 and V3, wherein V1 is equal to V2 and equal to V3.
Specifically, if the weights of the laundry in different batches are the same and the water content is high, the laundry is dehydrated by increasing the dehydration initial rotation speed for a relatively long time and then the laundry is dehydrated to the final dehydration rotation speed. When the water content is low, the water content is dehydrated by increasing the speed to the final dehydration speed after running for a short time at a higher dehydration initial speed; when the water content is medium, the water content is increased to the final dehydration rotating speed for dehydration after the operation for a period of time at the medium dehydration initial rotating speed. For example, when the water content is high, the water content is increased to the final dehydration rotation speed for dehydration after running for 60 seconds at the dehydration initial rotation speed of 50rpm, and the final dehydration rotation speed is selected to be 600rpm, 800rpm or 1000rpm, so that the more the clothes are, the higher the final dehydration rotation speed is; when the water content is low, operating for 30 seconds at the initial dehydration rotation speed of 100rpm, and then accelerating to the final dehydration rotation speed for dehydration; when the water content is moderate, the speed is increased to the final dehydration speed for dehydration after the dehydration initial speed of 70rpm is operated for 40 seconds. When the laundry is equal in weight, the higher the moisture content, the heavier the laundry is before dehydration, and the more uneven the laundry is in the tub, requiring more time for leveling. When the water content is high, the clothes can be operated for a long time at a lower dehydration initial rotating speed, redundant water can be gently thrown away, and meanwhile, the clothes can be better leveled; when the water content is low, the machine can run for a short time at a higher initial dehydration rotation speed, can well level clothes in the barrel, saves resources and improves efficiency. Therefore, when the weights of different batches of clothes to be washed are the same, the higher the water content is, the lower the dehydration initial rotating speed is, the longer the dehydration initial rotating speed lasts, and the final dehydration rotating speed is the same.
In summary, different parameters are selected for dehydration according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated, so that the influence of barrel collision and box collision caused by resonance in the dehydration and acceleration process of the washing machine can be reduced to a certain extent, the user experience is improved, resources can be saved, and the efficiency is improved.
Fig. 2 is a block schematic view of a dehydration control apparatus of a washing machine according to an embodiment of the present invention. As shown in fig. 2, the control apparatus includes an acquisition module and a control module.
The acquisition module acquires the weight of the clothes to be washed and the water content of the clothes to be dehydrated; and the control module is connected with the acquisition module, acquires the dehydration parameters of the clothes according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated, and controls the washing machine to dehydrate according to the dehydration parameters. The acquisition module comprises a weighing module or a combination of the weighing module and a flow reading module.
Wherein, according to an embodiment of the present invention, before the water is introduced in the main washing stage, the obtaining module may determine the weight of the laundry by fuzzy weighing; before dehydration begins after the drainage is finished, the acquiring module determines the weight of the clothes to be dehydrated through fuzzy weighing, the difference value between the weight of the clothes to be dehydrated and the weight of the clothes to be washed is the water content of the clothes in the barrel, and the water content is divided by the weight of the clothes to be washed to obtain the water content of the clothes in the barrel.
According to another embodiment of the present invention, the water content of the laundry in the tub can be obtained by setting a flow meter in the tub, reading the flow rate at the time of water intake and the flow rate at the time of water discharge through the flow meter, and calculating the difference.
Specifically, the operation process of the washing machine may include a main washing stage, a rinsing stage, and a dehydrating stage. Before water enters the main washing stage, the acquisition module detects the weight of the clothes to be washed; the acquisition module detects a moisture content of the laundry to be dehydrated before dehydration starts after the draining is finished. And the control module acquires the dehydration parameters of the clothes according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated and controls the washing machine to dehydrate according to the dehydration parameters.
As described above, according to the dehydration control apparatus of the washing machine proposed by the embodiment of the present invention, the weight of the laundry and the water content of the laundry are acquired by the acquisition module, the dehydration parameter is acquired by the control module, and the washing machine is controlled to perform dehydration according to the parameter. Therefore, the device controls the washing machine to select different parameters to dewater through the weight of the clothes to be washed and the water content of the clothes to be dewatered, can reduce the influence of collision on the barrel and the box body caused by resonance in the dewatering and accelerating process of the washing machine to a certain extent, improves the user experience, saves resources and improves the efficiency.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the principle of the present invention, which should also be regarded as the protection scope of the present invention.
Claims (10)
1. A dehydration control method of a washing machine, characterized in that: comprises the following steps
Detecting the weight of the clothes to be washed in the washing machine;
detecting the water content of the clothes to be dehydrated in the washing machine;
setting dehydration parameters according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated;
and controlling the washing machine to dewater according to the dewatering parameters.
2. The dehydration control method of a washing machine according to claim 1, wherein: the dehydration parameters comprise the dehydration initial rotating speed, and/or the dehydration initial rotating speed duration, and/or the final dehydration rotating speed.
3. The dehydration control method of a washing machine according to claim 2, wherein: if the water content of the clothes to be dehydrated in different batches is the same, detecting that the weights of the clothes to be dehydrated in different batches are G1, G2 and G3 respectively, and G1 is more than G2 and less than G3, selecting corresponding dehydration initial rotating speeds to be Vo1, Vo2 and Vo3 respectively, and Vo1 is more than Vo2 and less than Vo 3.
4. The dehydration control method of a washing machine according to claim 3, wherein: selecting the corresponding dehydration initial rotating speed durations as T1, T2, T3, T1> T2> T3.
5. The dehydration control method of a washing machine according to claim 4, wherein: selecting the corresponding final dewatering rotating speeds to be V1, V2 and V3 respectively, wherein V1< V2< V3.
6. The dehydration control method of a washing machine according to claim 2, wherein: if the water contents of the clothes to be dehydrated in different batches are the same, when the weight of the clothes to be washed is detected to be G1, the washing machine operates for T1 time at the initial dehydration rotating speed Vo1, and then the washing machine is accelerated to the final dehydration rotating speed V1 for dehydration;
when the weight of the clothes to be washed is G2, the washing machine operates for T2 time at the initial dehydration rotation speed Vo1 and then increases the speed to Vo2, and operates for T2 time and then increases the speed to the final dehydration rotation speed V2 for dehydration;
when the weight of the clothes to be washed is G3, the washing machine operates at the dewatering initial rotating speed Vo1 for T3 time and then increases the speed to Vo2, continues to operate for T3 time and then increases the speed to Vo3, continues to operate for T3 time and then increases the speed to the final dewatering rotating speed V3 for dewatering;
wherein G1< G2< G3, Vo1< Vo2< Vo3, T1> T2> T3, V1< V2< V3.
7. The dehydration control method of a washing machine according to claim 2, wherein: if the weights of different batches of clothes to be washed are the same, detecting that the water content of the clothes to be dehydrated is P1, P2 and P3 respectively, and P1> P2> P3, selecting the corresponding dehydration initial rotating speeds to be Vo1, Vo2 and Vo3 respectively, and Vo1< Vo2< Vo3, selecting the corresponding initial rotating speeds to be T1, T2 and T3 respectively, and T1> T2> T3 respectively.
8. The dehydration control method of a washing machine according to claim 7, wherein: and selecting the corresponding final dewatering rotating speeds as V1, V2 and V3, wherein V1 is equal to V2 and equal to V3.
9. A dehydration control apparatus of a washing machine, characterized in that: the system comprises the following modules:
the acquisition module acquires the weight of the clothes to be washed and the water content of the clothes to be dehydrated;
and the control module is connected with the acquisition module, acquires the dehydration parameters of the clothes according to the weight of the clothes to be washed and the water content of the clothes to be dehydrated, and controls the washing machine to dehydrate according to the dehydration parameters.
10. The dehydration control apparatus of a washing machine according to claim 9, wherein: the acquisition module comprises a weighing module or a combination of the weighing module and a flow reading module.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112760914A (en) * | 2020-12-29 | 2021-05-07 | 珠海格力电器股份有限公司 | Control method and device for dewatering and drying of washing machine |
| CN114427157A (en) * | 2022-02-11 | 2022-05-03 | 长虹美菱股份有限公司 | Dehydration curve-based roller washing machine dehydration performance optimization method |
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| CN112760914A (en) * | 2020-12-29 | 2021-05-07 | 珠海格力电器股份有限公司 | Control method and device for dewatering and drying of washing machine |
| CN114427157A (en) * | 2022-02-11 | 2022-05-03 | 长虹美菱股份有限公司 | Dehydration curve-based roller washing machine dehydration performance optimization method |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER WASHING MACHINE Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER WASHING MACHINE Co.,Ltd. Applicant before: QINGDAO HAIER JOINT STOCK Co.,Ltd. |
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