阅读说明：本技术 一种洗衣机的控制方法及洗衣机 (Control method of washing machine and washing machine ) 是由 王强 孟毅 张涛 刘琳琳 张欣敏 于 2018-07-27 设计创作，主要内容包括：本发明公开了一种洗衣机的控制方法,在洗涤和漂洗程序中,对洗涤水的浊度值和/或洗涤剂浓度值进行检测,并计算浊度值和/或洗涤剂浓度值的变化率,在计算的浊度值变化率和/或洗涤剂浓度值变化率落入相应设定区间后,当前所执行的洗涤程序、或漂洗程序结束。本发明还公开一种洗衣机,使用上述控制方法,能对洗涤程序和漂洗程序中的洗涤剂浓度变化进行综合监控,以准确判断洗涤负载的洗涤时间及漂洗次数。本发明解决了洗衣机不能准确地判断洗涤负载是否洗净问题,减少了对洗涤衣物的磨损以及减少了洗涤时间和水电资源的浪费,提高了洗衣效率。(The invention discloses a control method of a washing machine, which detects turbidity value and/or detergent concentration value of washing water in washing and rinsing programs, calculates change rate of the turbidity value and/or the detergent concentration value, and finishes the currently executed washing program or rinsing program after the calculated change rate of the turbidity value and/or the detergent concentration value falls into a corresponding set interval. The invention also discloses a washing machine, and by using the control method, the concentration change of the detergent in the washing program and the rinsing program can be comprehensively monitored so as to accurately judge the washing time and the rinsing frequency of the washing load. The invention solves the problem that the washing machine can not accurately judge whether the washing load is clean or not, reduces the abrasion to the washed clothes, reduces the washing time and the waste of water and electricity resources, and improves the washing efficiency.)

1. A control method of a washing machine, characterized in that: in the washing and rinsing processes, a turbidity value and/or a detergent concentration value of the washing water are detected, a change rate of the turbidity value and/or the detergent concentration value is calculated, and after the calculated change rate of the turbidity value and/or the calculated change rate of the detergent concentration value falls into a corresponding set interval, the currently executed washing process or rinsing process is ended.

2. The control method of a washing machine as claimed in claim 1, wherein: in the washing program, after the turbidity value change rate of the washing water and the detergent concentration value change rate both fall into the corresponding set interval, the state of the washing load in the washing machine is the cleaning state, and the washing program is finished.

3. The control method of a washing machine as claimed in claim 1, wherein: in the rinsing stage, after the turbidity value change rate of rinsing water and the detergent concentration value change rate both fall into corresponding set intervals, the rinsing procedure is finished; and judging whether the turbidity value and/or the detergent concentration value of the rinsing water at the moment are/is smaller than corresponding set values to determine whether the current washing load state is a rinsing state.

4. A control method of a washing machine according to claim 3, characterized in that: after the rinsing program is finished, when the turbidity value of the rinsing water at the moment is smaller than the turbidity set value and the detergent concentration value of the rinsing water is smaller than the detergent concentration set value, the current washing load state can be determined to be a rinsing state, and the rinsing stage is finished.

5. A control method of a washing machine according to claim 3, characterized in that: after the rinsing program is finished, when the turbidity value of the rinsing water and/or the concentration value of the detergent is not less than the corresponding set value, the rinsing water is injected again after the washing machine drains water, and the rinsing program is executed again.

6. The control method of a washing machine as claimed in any one of claims 1 to 5, wherein: the method comprises the following steps:

s1, powering on a washing machine to start up;

s2, setting a program by a user according to requirements;

s3, putting a load to be washed and a detergent;

s4, starting the washing machine, and starting water feeding of the washing machine;

s5, starting to operate a washing program after the washing machine reaches the water level height, and starting the water quality sensor at the moment;

s6, a water quality sensor acquires a turbidity value and a detergent concentration value of washing water, and the change rate of the turbidity value and the detergent concentration value is calculated according to the detection value;

s7, comparing whether the calculated change rate of the turbidity value and the change rate of the detergent concentration value both fall into corresponding set intervals, and if so, performing step S8; if not, continuing to wash, returning to step S6;

s8, the water quality sensor stops working after the washing program is finished;

s9, discharging washing water and dehydrating a washing load;

s10, the washing machine starts to inject water, reaches the water level height and enters a rinsing program;

s11, starting a water quality sensor;

s12, a water quality sensor acquires a turbidity value and a detergent concentration value of rinsing water, and the change rate of the turbidity value and the detergent concentration value is calculated;

s13, comparing whether the calculated change rate of the turbidity value and the change rate of the detergent concentration value both fall into corresponding set intervals, and if so, performing step S14;

s14, judging whether the turbidity value of the rinsing water and the concentration value of the detergent are both smaller than corresponding set values, if so, executing step S15 and then executing step S16; if not, after the step S15 is executed, the step S10 is executed again, and the washing machine executes the rinsing program again;

s15, draining water by the washing machine, dehydrating clothes, and re-injecting water;

and S16, finishing the clothes load rinsing stage.

7. A method for controlling a washing judgment of a washing machine according to any one of claims 1 to 6, characterized in that: and detecting the turbidity value and/or the concentration value of the detergent of the washing water for multiple times in unit time, wherein the difference between the maximum value and the minimum value in the detection values is the change rate of the turbidity value and/or the concentration value of the detergent correspondingly calculated by the end node of the unit time.

8. A control method of a washing machine according to any one of claims 1 to 7, characterized in that: in the washing program and/or the rinsing program, the washing water circularly flows between the water containing barrel and a circulating water path arranged outside the barrel, and turbidity value and/or detergent concentration value detection is carried out on the washing water flowing through the circulating water path.

9. A washing machine comprising the control method according to any one of claims 1 to 8, wherein the washing machine comprises a water containing cylinder and a circulating water path, water contained in the cylinder flows in a circulating manner between the water containing cylinder and the circulating water path, and a water quality sensor is arranged on the circulating water path and detects turbidity and detergent concentration of the water flowing through the circulating water path.

10. A washing machine as claimed in claim 9, wherein: the circulating water path is used for communicating the bottom and the top of the water containing barrel, a circulating pump and a water quality sensor are sequentially connected in series on the circulating water path, so that water at the bottom of the water containing barrel flows through the circulating water path from bottom to top under the action of the circulating pump and then flows to the top of the water containing barrel in a circulating mode, and the water quality sensor is used for detecting turbidity and detergent concentration of the water flowing through the circulating water path;

preferably, the water quality sensor is higher than a maximum water level set by the washing machine.

Technical Field

The invention belongs to the technical field of washing machines, particularly relates to a control method of a washing machine, and particularly relates to a washing machine with the control method of the washing machine.

Background

The washing process of the washing machine mainly comprises a washing stage, a rinsing stage and a spin-drying stage, the washing machine enters water and detergent to wash clothes in the washing stage, more water needs to be injected or the rinsing times need to be increased to rinse the clothes after the washing stage is started to rinse dirt and residual detergent, a large amount of water resources are consumed, the washing program of the traditional washing equipment is fixed, the same program or a series of set programs are used regardless of the dirt degree of the clothes, and a user does not know whether the clothes are washed cleanly or not and does not have a quantifiable judgment standard.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a control method of a washing machine, which can comprehensively monitor the concentration change of a detergent in a washing program and a rinsing program and more accurately judge whether clothes are washed or not.

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

a control method of a washing machine detects a turbidity value and/or a detergent concentration value of washing water in washing and rinsing procedures, calculates a change rate of the turbidity value and/or the detergent concentration value, and ends the currently executed washing procedure or rinsing procedure after the calculated change rate of the turbidity value and/or the detergent concentration value falls into a corresponding set interval.

Further, in the washing program, after the turbidity value change rate of the washing water and the detergent concentration value change rate both fall into the corresponding set intervals, the state of the washing load in the washing machine is a cleaning state, and the washing program is ended.

Further, in the rinsing stage, after the turbidity value change rate of the rinsing water and the detergent concentration value change rate both fall into corresponding set intervals, the rinsing procedure is finished; and judging whether the turbidity value and/or the detergent concentration value of the rinsing water at the moment are/is smaller than corresponding set values to determine whether the current washing load state is a rinsing state.

Further, after the rinsing process is finished, when the turbidity value of the rinsing water at the moment is smaller than the turbidity set value and the detergent concentration value of the rinsing water is smaller than the detergent concentration set value, the current washing load state can be determined to be a rinsing state, and the rinsing stage is finished.

Further, after the rinsing program is finished, when the turbidity value of the rinsing water and/or the concentration value of the detergent is not less than the corresponding set value, the washing machine injects the rinsing water again after draining water, and executes the rinsing program again.

A control method of a washing machine, characterized in that: the method comprises the following steps:

s1, powering on a washing machine to start up;

s2, setting a program by a user according to requirements;

s3, putting a load to be washed and a detergent;

s4, starting the washing machine, and starting water feeding of the washing machine;

s5, starting to operate a washing program after the washing machine reaches the water level height, and starting the water quality sensor at the moment;

s6, a water quality sensor acquires a turbidity value and a detergent concentration value of washing water, and the change rate of the turbidity value and the detergent concentration value is calculated according to the detection value;

s7, comparing whether the calculated change rate of the turbidity value and the change rate of the detergent concentration value both fall into corresponding set intervals, and if so, performing step S8; if not, continuing to wash, returning to step S6;

s8, the water quality sensor stops working after the washing program is finished;

s9, discharging washing water and dehydrating a washing load;

s10, the washing machine starts to inject water, reaches the water level height and enters a rinsing program;

s11, starting a water quality sensor;

s12, a water quality sensor acquires a turbidity value and a detergent concentration value of rinsing water, and the change rate of the turbidity value and the detergent concentration value is calculated;

s13, comparing whether the calculated change rate of the turbidity value and the change rate of the detergent concentration value both fall into corresponding set intervals, and if so, performing step S14;

s14, judging whether the turbidity value of the rinsing water and the concentration value of the detergent are both smaller than corresponding set values, if so, executing step S15 and then executing step S16; if not, after the step S15 is executed, the step S10 is executed again, and the washing machine executes the rinsing program again;

s15, draining water by the washing machine, dehydrating clothes, and re-injecting water;

and S16, finishing the clothes load rinsing stage.

And further, detecting the turbidity value and/or the concentration value of the detergent of the washing water for multiple times in unit time, wherein the difference between the maximum value and the minimum value in the detection values is the change rate of the turbidity value and/or the concentration value of the detergent, which is obtained by corresponding calculation of the end node of the unit time.

Furthermore, in the washing program and/or the rinsing program, the washing water circularly flows between the water containing cylinder and a circulating water path arranged outside the cylinder, and turbidity value and/or detergent concentration value detection is carried out on the washing water flowing through the circulating water path.

The washing machine comprises a water containing barrel and a circulating water path, wherein water contained in the barrel flows between the water containing barrel and the circulating water path in a circulating mode, a water quality sensor is arranged on the circulating water path, and the water quality sensor detects turbidity and detergent concentration of the water flowing through the circulating water path.

Furthermore, the bottom and the top of the water containing barrel are communicated through a circulating water path, a circulating pump and a water quality sensor are sequentially connected in series on the circulating water path, so that water at the bottom of the water containing barrel flows through the circulating water path from bottom to top under the action of the circulating pump and then flows to the top of the water containing barrel in a circulating mode, and the water quality sensor detects the turbidity and the concentration of the detergent of the water flowing through the circulating water path; preferably, the water quality sensor is higher than a maximum water level set by the washing machine.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

The control method adopts two detection indexes of turbidity and detergent concentration, judges the cleaning degree of clothes according to the change rate of the turbidity and the detergent concentration, controls the whole washing process, enables a user to distinguish blind washing, intelligently matches the corresponding washing programs for the clothes with different dirt degrees, and adopts the water quality sensor to monitor the detergent concentration, thread scraps, hair and other suspended matter concentrations of the washing water and rinsing water in the drum in real time, thereby solving the problem that the washing machine cannot accurately judge whether the washing load is cleaned, further reducing the abrasion of the washing load, reducing the waste of washing time and water and electricity resources, and improving the washing efficiency.

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 washing machine control method according to an embodiment of the present invention;

FIG. 2 is a schematic view of the installation position of a water quality sensor in the embodiment of the present invention;

fig. 3 is a flow chart of a washing process of the washing machine according to the embodiment of the present invention.

Fig. 4 is a flow chart of a washing process of the washing machine according to still another embodiment of the present invention.

Fig. 5 is a flow chart of a washing process of the washing machine according to still another embodiment of the present invention.

In the figure: 1. a washing machine; 2. a circulation pump; 3. a water quality sensor.

It should be noted that the figures and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it for a person skilled in the art by reference to a stable embodiment.

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", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a stable orientation, be constructed in a stable orientation, 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 to 3, in the control method of the washing machine according to the embodiment of the present invention, during the washing and rinsing process, the turbidity value and/or the detergent concentration value of the washing water are detected, the change rate of the turbidity value and/or the detergent concentration value is calculated, and after the calculated change rate of the turbidity value and/or the detergent concentration value falls within the corresponding setting interval, the currently executed washing process or rinsing process is ended.

In this embodiment, in the washing process, the turbidity value and/or the detergent concentration value of the washing water are detected, the change rate of the turbidity value and/or the detergent concentration value is calculated, and after the calculated change rate of the turbidity value and/or the detergent concentration value falls into the corresponding set interval, whether the current washing load state is the washing state is determined, and the washing process is ended.

In this embodiment, in the rinsing stage, the turbidity value and/or the detergent concentration value of the washing water are detected, and the change rate of the turbidity value and/or the detergent concentration value is calculated, and after the calculated change rate of the turbidity value and the calculated change rate of the detergent concentration value both fall into the corresponding set interval, the rinsing process is ended; then, the turbidity value of the rinsing water, the concentration value of the detergent and the set value are judged so as to determine whether the current washing load state is a rinsing state.

In this embodiment, the rinsing stage includes at least one rinsing procedure, and in the rinsing stage, the turbidity value and/or the detergent concentration value of the washing water are detected, and the change rate of the turbidity value and/or the detergent concentration value is calculated, and after the calculated change rate of the turbidity value and the calculated change rate of the detergent concentration value both fall into the corresponding set interval, the rinsing procedure is ended; then, the turbidity value of the rinsing water, the concentration value of the detergent and the set value are judged so as to determine whether the current washing load state is a rinsing state, and the rinsing program required for several times in the current washing stage can be automatically judged.

In this embodiment, in the rinsing stage, the turbidity value and/or the detergent concentration value of the washing water are detected, the change rate of the turbidity value and/or the detergent concentration value is calculated, and after the calculated change rate of the turbidity value and the calculated change rate of the detergent concentration value both fall into the corresponding setting intervals, when the rinsing procedure is finished, when the turbidity value of the rinsing water at this time is smaller than the turbidity setting value and simultaneously the detergent concentration value of the rinsing water is smaller than the detergent concentration setting value, it is determined that the current washing load state is the rinsing state, and the rinsing stage is finished.

In this embodiment, in the rinsing stage, the turbidity value and/or the detergent concentration value of the washing water are detected, the change rate of the turbidity value and/or the detergent concentration value is calculated, after the calculated change rate of the turbidity value and/or the change rate of the detergent concentration value both fall within the corresponding set interval, when the rinsing process is finished, and when the turbidity value and/or the detergent concentration value of the rinsing water at this time are not less than the corresponding set values, the washing machine drains water, injects fresh water into the water containing barrel again, and executes the rinsing process again.

In this embodiment, the turbidity value and/or the detergent concentration value of the washing water is/are detected multiple times in unit time, and the difference between the maximum value and the minimum value in each detection value is the change rate of the turbidity value and/or the detergent concentration value calculated by the end node in unit time.

In this embodiment, in a washing process, a turbidity value and/or a detergent concentration value of washing water are detected and recorded, a curve is generated from the obtained turbidity value and/or detergent concentration value, and when the turbidity curve and/or the detergent concentration curve tend to be stable, a current washing load state is determined to be a washing state, and the washing process is ended.

In this embodiment, in the rinsing stage, the turbidity value and/or the detergent concentration value of the washing water are detected and recorded, and a curve is generated from the obtained turbidity value and/or detergent concentration value, and when the turbidity curve and/or the detergent concentration curve tend to be stable, the rinsing process is finished; then, the turbidity value of the rinsing water, the concentration value of the detergent and the set value are judged so as to determine whether the current washing load state is a rinsing state.

In this embodiment, in the rinsing stage, a turbidity value and/or a detergent concentration value of the washing water is detected and recorded, and a curve is generated from the obtained turbidity value and/or detergent concentration value, and when the turbidity curve and/or the detergent concentration curve tend to be stable, the rinsing process is finished; and when the turbidity value of the rinsing water is smaller than the turbidity set value and the detergent concentration value of the rinsing water is smaller than the detergent concentration set value, determining that the current washing load state is a rinsing state, and finishing the rinsing stage.

In this embodiment, in the rinsing stage, a turbidity value and/or a detergent concentration value of the washing water is detected and recorded, and a curve is generated from the obtained turbidity value and/or detergent concentration value, and when the turbidity curve and/or the detergent concentration curve tend to be stable, the rinsing process is finished; when the turbidity value of the rinsing water and/or the concentration value of the detergent is not less than the corresponding set value, the washing machine drains water, fresh water is injected into the water containing barrel again, and the rinsing program is executed again.