CN114150472A

CN114150472A - Washing machine and control method thereof

Info

Publication number: CN114150472A
Application number: CN202010936035.1A
Authority: CN
Inventors: 李福军; 徐杰; 方大丰; 高秋英
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2022-03-08

Abstract

The invention discloses a washing machine and a control method thereof, wherein the washing machine comprises a pure water device, the pure water device is provided with a pure water outlet pipeline, and the pure water outlet pipeline is communicated with a water supply pipeline of the washing machine; the control method comprises the step of controlling pure water of the pure water device to enter a washing barrel of the washing machine through the water supply pipeline when the washing machine carries out the last rinsing stage so as to carry out the last rinsing on the articles to be washed by using the pure water. The control method of the washing machine can ensure that the washed objects have higher cleanliness after washing is finished, and improves the user experience.

Description

Washing machine and control method thereof

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a washing machine and a control method thereof.

Background

At present, due to the rapid development of the social industry, the living standard of people is improved, and meanwhile, a plurality of adverse factors are brought. Among them, there is a problem that water quality is deteriorated due to the fact that people pay attention to the water quality and the water quality has the greatest influence on human life. At present, the content of harmful substances in water sources used by people is increased, such as heavy metals and the like, which are harmful to human health.

Most of the existing washing machines directly use municipal tap water for washing and rinsing, and are affected by water quality, the tap water contains partial mineral salts, pipeline rust and other residues, as the water quality is poor, after clothes are washed in the tap water, partial substances can be attached to the clothes, after the clothes are aired, partial pollutants can be attached to the clothes, secondary pollution exists, the cleaning effect of the washed clothes is poor, and in addition, the polluted clothes can cause harm to human health after being worn for a long time.

Although some types of washing machines have been used to sterilize clothes by steam washing, high-temperature scalding, ultraviolet sterilization, etc., the operation can kill bacteria, viruses, etc. in water, which affect health. However, mineral substances, detergents, rust and other inorganic substances in tap water cannot be removed, and the cleaning effect is still not satisfactory.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a control method of a washing machine, which solves the technical problem of poor clothes cleaning effect in the prior art.

In order to solve the technical problems, the invention adopts the technical scheme that:

a control method of a washing machine comprises a pure water device, wherein the pure water device is provided with a pure water outlet pipeline which is communicated with a water supply pipeline of the washing machine;

and when the washing machine carries out the last rinsing stage, controlling the pure water of the pure water device to enter a washing barrel of the washing machine through the water supply pipeline so as to carry out the last rinsing on the articles to be washed by using the pure water.

Further, the pure water device is provided with a wastewater outlet pipeline which is communicated with a water supply pipeline of the washing machine;

the washing machine carries out N times of rinsing stages, and when the washing machine carries out a washing stage and/or a rinsing stage before the Nth time, the washing machine controls the wastewater of the pure water device to enter a washing barrel of the washing machine through the water supply pipeline so as to use the wastewater to wash and/or rinse the articles to be washed before the Nth time;

wherein N is a positive integer greater than or equal to 1.

Further, after the washing stage is finished or the N-1 th rinsing stage is finished, judging whether the water quantity W of the pure water in the pure water device reaches the preset rinsing water quantity W', and determining whether to control the pure water to enter the washing barrel or not according to the judgment result to rinse the to-be-washed object for the Nth time;

if W is larger than or equal to W', controlling pure water to enter a washing barrel, and carrying out Nth rinsing on the object to be washed;

if W is less than W ', the pure water device is controlled to start to work until W is more than or equal to W'.

Further, controlling the pure water device to start further comprises: and controlling the washing machine to enter an intermediate dehydration stage, and simultaneously controlling the wastewater to enter a washing barrel of the washing machine through the water supply pipeline, and performing the intermediate dehydration stage on the articles to be washed by using the wastewater.

Further, the step of controlling the pure water to enter the washing barrel to rinse the to-be-washed object for the Nth time comprises the following steps:

and controlling the pure water to enter the washing barrel, and when the pure water in the washing barrel reaches a set rinsing water level, controlling the pure water to pause to enter the washing barrel, and starting the washing machine to rinse for the Nth time.

Furthermore, the method also comprises the step of controlling the washing machine to enter a final dehydration stage after the Nth rinsing stage is finished.

Furthermore, before the washing stage begins, the wastewater is controlled to enter a washing barrel of the washing machine through the water supply pipeline, the pure water is controlled to be reserved in the pure water device, when the wastewater in the washing barrel reaches a set washing water level, the pure water device is controlled to pause, and the washing machine begins to execute the washing stage.

In addition, the invention also provides a washing machine which is controlled by adopting the control method.

The washing machine further comprises a pure water device, wherein the pure water device is provided with a pure water outlet pipeline, and the pure water outlet pipeline is communicated with a water supply pipeline of the washing machine.

Furthermore, the pure water device is also provided with a wastewater outlet pipeline which is communicated with a water supply pipeline of the washing machine.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. the control method of the washing machine provided by the invention uses pure water to carry out the last rinsing, can ensure that the washings have higher cleanliness after the washing is finished, and improves the user experience.

2. The control method of the washing machine of the invention utilizes the pure water and the waste water of the pure water device to wash the washings, and can maximize the washing cleaning effect under the condition of fixed water consumption of the washing machine.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In the drawings:

fig. 1 is a flowchart of a control method of a washing machine according to the present invention;

fig. 2 is a schematic structural view of the washing machine of the present invention.

In the figure:

100. a washing machine; 110. a washing tub; 101. a first water inlet pipe; 102. a second water inlet pipe; 103. a water inlet valve;

200. a water purification device; 201. a wastewater outlet pipeline; 202. a pure water outlet pipeline; 203. a water inlet pipeline; 204. a water storage bucket.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the present invention discloses a control method of a washing machine 100 having a pure water device 200, the pure water device 200 having a pure water outlet line 202, the pure water outlet line 202 being in communication with a water supply line of the washing machine 100.

The control method of the washing machine 100 includes controlling pure water of the pure water device 200 to enter the washing tub 110 of the washing machine 100 through the water supply line when the washing machine 100 performs the last rinsing stage to perform the last rinsing of the laundry using the pure water.

According to the technical scheme, the washing machine can be used for rinsing the to-be-washed object by using the pure water in the last rinsing stage, so that the washed object rinsed by the pure water can achieve higher cleanliness. Wherein, pure water means water containing no impurities.

The user can autonomously select whether to apply pure water for the last rinsing according to the type of the laundry. For example, the user can not select to use pure water for the last rinsing when washing the clothes worn outside such as coats, jeans and the like, and the user can select to use pure water for the last rinsing when washing infant clothes and underwear, so that the clothes are more comfortable and comfortable after being washed.

Further, the pure water device 200 further has a waste water outlet line 201, and the waste water outlet line 201 is communicated with a water supply line of the washing machine 100.

The washing machine 100 performs the rinsing stages N times in total, and the washing machine 100 controls the wastewater of the pure water device 200 to enter the washing tub 110 of the washing machine 100 through the water supply line when performing the washing stage and/or the rinsing stage before the nth time, so as to wash the laundry using the wastewater and/or rinse before the nth time. Wherein N is a positive integer greater than or equal to 1.

In the above technical solution of the present invention, after the pure water device 200 is started, the pure water generated by the pure water device 200 is stored, the wastewater generated in the pure water process is discharged into the washing tub 110, and the ratio of the wastewater of the pure water device 200 to the pure water is generally greater than 2: 1.

The washing machine 100 performs a washing stage and a rinsing stage before the last rinsing stage using wastewater generated during the production of pure water by the pure water unit 200, and then performs rinsing using pure water at the last rinsing stage, thereby maximizing a washing cleaning effect under the condition that the water consumption of the washing machine 100 is constant. In addition, waste water generated in the process of preparing pure water can be prevented from being wasted.

Further, the washing of the laundry with the wastewater specifically includes: before the washing stage begins, the control wastewater enters the washing tub 110 of the washing machine 100 through the water supply pipeline, the control pure water is retained in the pure water device 200, when the wastewater in the washing tub 110 reaches a set washing water level, the control pure water device 200 is suspended, and the washing machine 100 begins to execute the washing stage.

The present invention washes the wastewater prepared by the pure water device 200, and can prevent the waste of the wastewater generated in the process of preparing pure water.

As another embodiment of the present invention, it is of course possible to control the pure water device 200 to operate to generate pure water when the washing machine 100 is started, control tap water to enter the washing tub 110 through the water supply pipeline, and use the tap water to wash and/or rinse the laundry before the nth time.

Further, after the washing stage/the (N-1) th rinsing stage is finished, it is determined whether the amount W of pure water in the pure water device 200 reaches the predetermined rinsing amount W', and it is determined whether to control the pure water to enter the washing tub 110 according to the determination result, so as to perform the nth rinsing of the laundry.

Further, if W is equal to or greater than W', the pure water is controlled to enter the washing tub 110, and the Nth rinsing is performed on the laundry.

Further, if W is less than W ', the pure water device 200 is controlled to start to prepare pure water until W is greater than or equal to W', and then the pure water is controlled to enter the washing tub 110 to perform the Nth rinsing on the laundry.

Since the process of preparing pure water by the pure water unit 200 requires a certain amount of time, which is too short, the amount of pure water may be too small to reach the amount of water used for one rinsing. Therefore, before the final rinsing is performed, the detection and judgment of the amount of pure water prepared by the pure water device 200 is required.

For example, the detected amount of pure water of the pure water device 200 is W, the preset amount of rinse water of the washing machine 100 is W ', and if the amount W of pure water reaches the preset amount W' of rinse water of the washing machine 100, the washing machine 100 is controlled to perform the last rinse using pure water; on the contrary, if the amount of pure water W does not reach the rinsing water amount W 'preset in the washing machine 100, the pure water apparatus 200 is controlled to operate to continue to produce pure water until W is not less than W'.

Further, controlling the pure water to enter the washing tub 110 to perform the nth rinsing of the laundry includes:

the pure water is controlled to enter the washing tub 110, and when the pure water in the washing tub 110 reaches a set rinsing water level, the pure water is controlled to pause to enter the washing tub 110, and the nth rinsing is started.

In the above technical solution of the present invention, since the water amount W of the pure water prepared by the pure water device 200 already meets the water consumption requirement required for one rinsing, the washing machine 100 is controlled to directly enter the last rinsing stage, and the pure water is used to rinse the laundry, so that the laundry rinsed by the pure water reaches a higher cleanliness.

Further, when the pure water control device 200 is started, the method further includes controlling the washing machine 100 to enter an intermediate dehydration stage, controlling the wastewater of the pure water control device 200 to enter the washing tub 110 of the washing machine 100 through the water supply pipeline, and performing the intermediate dehydration stage on the articles to be washed by using the wastewater.

Preferably, in the intermediate dehydration stage, the washing machine 100 is controlled to operate at the rotation speed A for a certain time, then is controlled to reduce to the rotation speed B for a certain time, and simultaneously wastewater is controlled to be directly sprayed on the washings, and the washings are dehydrated while being sprayed until W is more than or equal to W'.

In the above technical solution of the present invention, when the pure water amount W of the pure water device 200 does not reach the preset rinsing water amount W', the pure water device 200 needs to be controlled to operate to prepare pure water, but a certain amount of wastewater is generated during the pure water preparation process of the pure water device 200, at this time, the wastewater may be controlled to enter the washing tub 110 of the washing machine 100, and the wastewater is used to perform rinsing and/or intermediate dewatering on the laundry before the nth time, so that not only is the wastewater not wasted, but also the residual amount of detergent in the laundry is reduced before the last rinsing, so that the laundry rinsed by the pure water reaches a higher cleanliness.

As another embodiment of the present invention, it is of course possible to perform an intermediate dehydration stage on the laundry using tap water during the process of controlling the pure water device 200 to prepare pure water, or directly control the washing machine 100 to suspend operation and wait for the pure water device 200 to prepare pure water.

In any case, the pure water device 200 is controlled to operate to prepare pure water so that the pure water satisfies the water amount for one rinsing, and the wastewater is preferably subjected to an intermediate dehydration stage for the laundry.

Further, the method includes controlling the washing machine 100 to enter a final dehydration stage after the nth rinsing stage is finished.

In the above technical scheme of the present invention, after the laundry is rinsed with pure water for the last time, the washing machine 100 is controlled to perform a final dehydration stage, thereby completing the whole washing process.

Of course, if the washing machine 100 has the drying or airing function, the washing machine 100 is controlled to enter the drying or airing stage after the final dewatering stage is completed, and then the whole washing process is completed.

For example, in the washing process of the present washing machine 100, a multi-rinse washing method is adopted for better washing the clothes. Namely, one washing and a plurality of rinsing.

The washing machine 100 performs a washing stage and a rinsing stage in a total of one time and three times, and when the washing machine 100 performs the washing stage, the first rinsing stage and the second rinsing stage, the wastewater of the pure water device 200 is controlled to enter the washing tub 110 of the washing machine 100 through the water supply line, so that the laundry is washed, rinsed and rinsed using the wastewater.

More specifically, before the washing stage begins, the wastewater from the pure water device 200 is controlled to enter the washing tub 110 of the washing machine 100 through the water supply line, the pure water is controlled to remain in the pure water device 200, and when the wastewater in the washing tub 110 reaches a set washing water level, the pure water device 200 is controlled to pause, and the washing machine 100 begins to perform the washing stage.

After the washing stage is finished and before the first rinsing stage is started, the pure water device 200 is controlled to be started, pure water is controlled to be remained in the pure water device 200, when the wastewater in the washing tub 110 reaches a set washing water level, the pure water device 200 is controlled to pause, and the washing machine 100 starts to execute the first rinsing stage.

After the first rinsing is finished and before the second rinsing is started, the pure water device 200 is controlled to be started, pure water is controlled to be remained in the pure water device 200, when the wastewater in the washing tub 110 reaches a set washing water level, the pure water device 200 is controlled to pause, and the washing machine 100 starts to execute the second rinsing stage.

After the second rinsing stage is finished and before the third rinsing is started, it is determined whether the amount W of pure water in the pure water device 200 reaches the preset rinsing amount W', and it is determined whether to control pure water to enter the washing tub 110 according to the determination result, so as to perform the third rinsing, that is, the last rinsing, on the articles to be washed.

If W is more than or equal to W', controlling the pure water to enter the washing barrel 110, and rinsing the object to be washed for the third time; the pure water is controlled to enter the tub 110, and when the pure water in the tub 110 reaches a set rinsing water level, the pure water is controlled to pause to enter the tub 110, and the washing machine 100 starts a third rinsing.

If W is less than W', the pure water apparatus 200 is controlled to start up operation to prepare pure water until W is greater than or equal to W.

In the intermediate dehydration stage, the washing machine 100 is controlled to operate at the rotation speed A for a certain time, then the rotation speed is reduced to the rotation speed B for a certain time, and simultaneously the wastewater is controlled to be directly sprayed on the washings, and the washings are dehydrated while being sprayed until the W is more than or equal to W', and then the third rinsing stage is carried out.

Further, the method includes controlling the washing machine 100 to enter a final dehydration stage after the third rinsing stage is finished until the washing is finished.

Of course, if the washing machine 100 performs a washing step and a rinsing step in one step, after the washing step and before the first rinsing step, it can be determined whether the amount W of pure water in the pure water device 200 reaches the predetermined rinsing water amount W', and it is determined whether to control the pure water to enter the washing tub 110 according to the determination result, so as to perform the first rinsing step, i.e., the last rinsing step, on the laundry.

In the embodiment of the invention, the washings are washed by using the pure water and the wastewater of the pure water device, so that the washing cleaning effect can be maximized under the condition that the water consumption of the washing machine is fixed.

As shown in fig. 2, the present invention also discloses a washing machine 100, wherein the washing machine 100 is controlled by the control method.

Specifically, the washing machine 100 has a water supply line including a first water inlet pipe 101, a water inlet valve 103, and a second water inlet pipe 102, wherein one end of the first water inlet pipe 101 is communicated with a tap water, the other end is communicated with a water inlet of the water inlet valve 103, one end of the second water inlet pipe 102 is communicated with a water outlet of the water inlet valve 103, and the other end is communicated with a detergent box and/or a washing tub 110.

Further, a pure water device 200 is disposed in the washing machine 100, the pure water device 200 has a wastewater outlet pipeline 201 and a pure water outlet pipeline 202, and both the wastewater outlet pipeline 201 and the pure water outlet pipeline 202 are communicated with the second water inlet pipe 102 of the washing machine 100.

The pure water device 200 is further provided with a water inlet pipe 203, and the water inlet pipe 203 of the pure water device 200 can be directly connected with a tap water faucet or communicated with the other water outlet of the water inlet valve 103.

As another aspect of the present invention, the washing machine 100 has two water paths flowing into the washing tub 110 from the water inlet of the washing machine 100, wherein the first water path directly passes through the pure water device 200, and the water outlet ends of the wastewater outlet pipe 201 and the pure water outlet pipe 202 are communicated with the detergent box and/or the washing tub 110; the second water path directly supplies tap water to the washing tub 110, and the water inlet ends of the two water paths are respectively and correspondingly provided with an electromagnetic valve for controlling the on-off of the water paths, so that whether the pure water device 200 is used or not is selected according to requirements.

Wherein, water purification unit 200 includes the fuselage body, and the fuselage body embeds has a plurality of filtration systems that connect gradually, and a plurality of filtration systems include that polypropylene prefilters, active carbon filter, ultraviolet ray virus killing, reverse osmosis membrane handle etc. are provided with the water inlet and the waste water export of being connected with filtration system on the fuselage body, water inlet and inlet channel 203 intercommunication, waste water export and waste water outlet 201 intercommunication.

The pure water device 200 further comprises a water storage barrel 204, wherein the water storage barrel 204 is provided with a pure water inlet and a pure water outlet, the pure water inlet is communicated with the water outlet of the mineral exchange barrel, and the pure water outlet is communicated with the pure water outlet pipeline 202.

After entering the pure water device 200 from the water inlet, the tap water is filtered by the following multi-stage filtration system:

(1) pre-filtering polypropylene to remove iron rust, dust, suspended matters and other large-particle impurities in tap water;

(2) the activated carbon filtration is used for removing peculiar smell in the tap water, reducing the turbidity, organic matters, iron, phenol and the like of the tap water, removing residual chlorine in the tap water and preventing chlorine with strong oxidizability from damaging a reverse osmosis membrane;

(3) ultraviolet ray sterilization is adopted to remove viruses and bacteria in water and prevent purified water from being secondarily polluted;

(4) reverse osmosis membrane treatment, which is to remove large-particle impurities, microorganisms, organic matters, heavy metals and the like in water and remove soluble solids (salts) at the same time, wherein the wastewater obtained after reverse osmosis membrane treatment is discharged out of the pure water device 200 through a wastewater outlet; the pure water treated by the reverse osmosis membrane is stored in the water storage bucket 204 for later use.

Tap water enters the water purification device 200 through the water inlet, and after a series of filtration, the wastewater is discharged from the wastewater outlet, and the filtered pure water is sent to the water storage barrel 204. The wastewater from the pure water device 200 is directly fed into the washing tub through the wastewater outlet line 201, and the pure water outlet line 202 is fed into the water storage tub 204, so that pure water is pumped into the washing tub 110 by the pump during rinsing.

According to the technical scheme of the invention, the pure water device 200 is added in the washing machine 100, tap water is filtered by the pure water device 200 to remove impurities in the water, and then the tap water is subjected to reverse osmosis to generate pure water and wastewater with high mineral concentration. The wastewater generated by the pure water unit 200 is directly discharged into the washing tub for washing and rinsing; the generated pure water is stored in the pure water tub for the last rinsing of the laundry. Under the condition that the water consumption of the washing machine is fixed, the washing cleaning effect can be maximized.

The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A control method of a washing machine comprises a pure water device, wherein the pure water device is provided with a pure water outlet pipeline which is communicated with a water supply pipeline of the washing machine; the method is characterized in that:

2. The control method of a washing machine according to claim 1, characterized in that: the pure water device is provided with a wastewater outlet pipeline which is communicated with a water supply pipeline of the washing machine;

wherein N is a positive integer greater than or equal to 1.

3. The control method of a washing machine according to claim 2, characterized in that: after the washing stage is finished or the N-1 th rinsing stage is finished, judging whether the water quantity W of the pure water in the pure water device reaches the preset rinsing water quantity W', and determining whether to control the pure water to enter the washing barrel or not according to the judgment result to rinse the articles to be washed for the Nth time;

4. The control method of a washing machine according to claim 3, characterized in that: the control of the starting work of the pure water device also comprises the step of controlling the washing machine to enter an intermediate dehydration stage, and simultaneously controlling the wastewater to enter a washing barrel of the washing machine through the water supply pipeline, and using the wastewater to perform the intermediate dehydration stage on the articles to be washed.

5. The control method of a washing machine according to claim 3, characterized in that: the Nth rinsing of the to-be-washed object by controlling the pure water to enter the washing barrel comprises the following steps:

6. The control method of a washing machine according to claim 5, wherein: and controlling the washing machine to enter a final dehydration stage after the Nth rinsing stage.

7. The control method of a washing machine according to claim 2, characterized in that: before the washing stage begins, controlling the wastewater to enter a washing barrel of the washing machine through the water supply pipeline, controlling the pure water to be reserved in the pure water device, controlling the pure water device to pause when the wastewater in the washing barrel reaches a set washing water level, and starting the washing stage by the washing machine.

8. A washing machine characterized by: controlled by a control method according to any one of claims 1 to 7.

9. The washing machine as claimed in claim 8, wherein: the washing machine comprises a pure water device, wherein the pure water device is provided with a pure water outlet pipeline which is communicated with a water supply pipeline of the washing machine.

10. A washing machine as claimed in claim 9, wherein: the pure water device is also provided with a waste water outlet pipeline which is communicated with a water supply pipeline of the washing machine.