CN105177922A

CN105177922A - Washing machine control method, washing machine control device and washing machine

Info

Publication number: CN105177922A
Application number: CN201510557397.9A
Authority: CN
Inventors: 王卫华; 周椿浩; 班永
Original assignee: Wuxi Little Swan Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2015-09-02
Filing date: 2015-09-02
Publication date: 2015-12-23
Anticipated expiration: 2035-09-02
Also published as: CN105177922B

Abstract

The present invention discloses a washing machine control method, a washing machine control device and a washing machine. The method comprises inputting a start command by a user to control a washing machine to enter a prewashing stage and acquire turbidity and electric conductivity calibration values; controlling a turbidity and electric conductivity sensor to detect a first turbidity of a current liquid inside an inner cylinder after prewashing is completed; acquiring a first turbidity change value from the first turbidity and the turbidity calibration value and determining washing parameters according to the change value; controlling the washing machine to enter a washing stage according to the washing parameters, acquiring a second turbidity change value of the current liquid in the inner cylinder before the washing stage is completed, and entering a rinsing stage when the change value equals to a first preset threshold value; controlling the above sensor to detect an electric conductivity of the current liquid inside the cylinder every time the rinsing is completed; acquiring an electric conductivity change value by comparing the electric conductivity with the electric conductivity calibration value, acquiring a ratio between the change value and an electric conductivity judgment standard value, and judging if the ration is smaller than or equal to a second preset threshold value; and if yes, exiting the rinsing stage.

Description

The control method of washing machine, device and washing machine

Technical field

The present invention relates to washing machine field, particularly a kind of control method of washing machine, device and washing machine.

Background technology

Along with the raising of living condition, the demand of user function is also in constantly progress, and washing machine strides forward to full intellectuality.At present, traditional washing machine is generally provided with fixing rinsing and washing times, or judge wash time and rinsing times by the turbidity value detecting laundry water, such as, if detect that the turbidity value of laundry water is higher, so washing machine will carry out the washing of long period and the rinsing of more number of times to clothing.

But Problems existing is, because the degree of fouling of clothing is different, washing agent required for washes clean clothing, water, time should be not the same yet, the down jackets in such as winter will be more required when washing than the T-shirt in summer wash time long, detergent amount is large, and, due to the washing agent kind that user drops into, throw in dosage, wash temperature, the impact of the factors such as water quality, if the turbidity only by detecting laundry water can not judge whether the washing agent on clothing has rinsed clean, after such as a lot of alkaline detergents is water-soluble, turbidity is just very low, the spot that there will be like this inside the clothing that washed may have been cleaned, but also may have a little washing agent in clothing to remain, this a little washing agent, likely can damage the skin of user, Consumer's Experience is caused to be deteriorated.

Summary of the invention

The present invention is intended to solve one of above-mentioned technical problem at least to a certain extent.

For this reason, one object of the present invention is the control method proposing a kind of washing machine, the method can be done washing by complete monitoring, according to the clean level of clothing, the consumption of rational selection washing agent, water and wash time, and while reaching clean clothing, can reduce and eliminate the residual of washing agent on clothing even completely, avoid the washing agent do not eliminated completely to the damage of user's skin, improve Consumer's Experience.

Second object of the present invention is the control device proposing a kind of washing machine.

3rd object of the present invention is to propose a kind of washing machine.

For reaching above-mentioned purpose, the embodiment of first aspect present invention proposes a kind of control method of washing machine, in the control method of this washing machine, described washing machine comprises inner core, washing agent Storage Box, detergent throwing device and turbidity and conductivity sensor, wherein said method comprises: S1, after the sign on receiving user's input, control described washing machine and enter pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0; S2, at the end of described pre-wash stage, controls the first turbidity A1 that described turbidity and conductivity sensor detect current liquid in described inner core; S3, the first turbidity changing value is obtained according to described first turbidity A1 and described turbidity calibration value A0, and according to described first turbidity changing value determination washing parameter, wherein, described washing parameter comprises washing agent injected volume M2, slurry amount L2, the first wash time T2; S4, controls described washing machine according to described washing parameter and enters the washing stage; S5, before the described washing stage terminates, detects the second turbidity changing value of current liquid in described inner core; S6, when described second turbidity changing value equals the first predetermined threshold value, exits the described washing stage, and enters rinse stage; S7, each rinsing terminates the electrical conductivity B1 that the described turbidity of rear control and conductivity sensor detect current liquid in described inner core; S8, conductivity variations value is obtained according to described electrical conductivity B1 and described electrical conductivity calibration value B0, and the electrical conductivity ratio obtained between described conductivity variations value and electrical conductivity criterion value, and judge whether described electrical conductivity ratio is less than or equal to the second predetermined threshold value; S9, if described electrical conductivity ratio is less than or equal to described second predetermined threshold value, then exits rinse stage.

According to the control method of the washing machine of the embodiment of the present invention, after the sign on receiving user's input, be introduced into pre-wash stage, after pre-wash stage intakes prewashing water consumption L1, sample turbidity and the electrical conductivity of current liquid in turbidity and conductivity sensor detection inner tank of washing machine can be controlled, and using sample turbidity and sample electrical conductivity as turbidity calibration value and electrical conductivity calibration value, after pre-wash stage terminates, the first turbidity of current liquid in turbidity and conductivity sensor detection inner core can be controlled, and by the first turbidity is compared with turbidity calibration value, determine washing parameter, wherein, washing parameter comprises washing agent injected volume, slurry amount, first wash time etc., washing machine can enter the washing stage according to washing parameter afterwards, before the washing stage terminates, detect the second turbidity changing value of current liquid in inner tank of washing machine, when the second turbidity changing value equals the first predetermined threshold value, exit the washing stage, and enter rinse stage, then each rinsing terminates the electrical conductivity of current liquid in rear acquisition inner core, conductivity variations value is obtained according to this electrical conductivity and electrical conductivity calibration value, and the ratio obtained between conductivity variations value and electrical conductivity criterion value, and compare the relation of this ratio and the second predetermined threshold value, if be less than or equal to the second predetermined threshold value to prove do not had spot and washing agent to remain in clothing, thus exit rinse stage.Namely can do washing by complete monitoring, and according to the clean level of clothing, the consumption of rational selection washing agent, water and wash time, and while reaching clean clothing, can reduce and eliminate the residual of washing agent on clothing even completely, avoid the washing agent do not eliminated completely to the damage of user's skin, improve Consumer's Experience.

According to one embodiment of present invention, described control method also comprises: S10, when described second turbidity changing value is less than or greater than described first predetermined threshold value, increases by the second wash time T1, and after the second wash time T1 described in the described washing of drum type washing machine of control, perform described step S6.S11, if described electrical conductivity ratio is greater than described second predetermined threshold value, then obtains current rinsing times, and judges whether described current rinsing times reaches preset times; S12, if described current rinsing times reaches described preset times, then exits described rinse stage; S13, if described current rinsing times does not reach described preset times, then enters rinsing next time, and returns described step S7.

According to one embodiment of present invention, control described washing machine and enter pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0, specifically comprise: obtain prewashing parameter, wherein, described prewashing parameter comprises prewashing water consumption L1 and prewashing time T0; Described prewashing water consumption L1 is put in described inner core; Control sample turbidity and sample electrical conductivity that described turbidity and conductivity sensor detect current liquid in described inner core, and using described sample turbidity and described sample electrical conductivity as described turbidity calibration value A0 and electrical conductivity calibration value B0; Control described inner core and carry out prewashing time T0 described in prewashing.Thus, by after pre-wash stage intakes L1 water level each time, control turbidity and conductivity sensor detect current liquid in inner core, and using the turbidity that detects and conductivity value as turbidity and electrical conductivity calibration value, washing machine can be made when carrying out clothes washing each time, when the first turbidity value is compared with electrical conductivity calibration value with turbidity calibration value with conductivity value, avoid because of different time, the difference of different local water quality and the error brought, thus make washing machine can judge the spot of clothing and the residual whether rinsed clean of washing agent exactly, and then the spot on clothing and washing agent zero are remained, improve user experience.

According to one embodiment of present invention, obtain the first turbidity changing value according to described first turbidity A1 and described turbidity calibration value A0, specifically comprise: obtain the turbidity difference between described first turbidity A1 and described turbidity calibration value A0; Obtain the turbidity ratio between described turbidity difference and turbidity criterion value, and using described turbidity ratio as described turbidity changing value.

According to one embodiment of present invention, control described washing machine according to described washing parameter and enter the washing stage, specifically comprise: in described inner core, put into described slurry amount L2; Control described detergent throwing device from described washing agent Storage Box, extract described washing agent injected volume M2, to make described detergent throwing device, described washing agent injected volume M2 is thrown in described inner core; Control described inner core to wash, described first wash time T2.

According to one embodiment of present invention, detect the second turbidity changing value of current liquid in described inner core, specifically comprise: control the second turbidity A2 that described turbidity and conductivity sensor detect current liquid in described inner core, and after the preset lime, control the 3rd turbidity A3 that described turbidity and conductivity sensor detect current liquid in described inner core, wherein, described Preset Time is less than described first wash time T2; Described second turbidity changing value is obtained according to described 3rd turbidity A3 and described second turbidity A2.

According to one embodiment of present invention, described first predetermined threshold value is 0, and described second predetermined threshold value is 1.

For reaching above-mentioned purpose, the embodiment of second aspect present invention proposes a kind of control device of washing machine, described washing machine comprises inner core, washing agent Storage Box, detergent throwing device and turbidity and conductivity sensor, wherein said device comprises: the first control module, for after the sign on receiving user's input, control described washing machine and enter pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0;

Second control module, at the end of described pre-wash stage, controls the first turbidity A1 that described turbidity and conductivity sensor detect current liquid in described inner core; First acquisition module, for obtaining the first turbidity changing value according to described first turbidity A1 and described turbidity calibration value A0, and according to described first turbidity changing value determination washing parameter, wherein, described washing parameter comprises washing agent injected volume M2, slurry amount L2, the first wash time T2; Described first control module also enters the washing stage for controlling described washing machine according to described washing parameter; Detection module, before terminating in the described washing stage, detects the second turbidity changing value of current liquid in described inner core; Described first control module also for when described second turbidity changing value equals the first predetermined threshold value, exits the described washing stage, and enters rinse stage; Described second control module also terminates for each rinsing the electrical conductivity B1 that the described turbidity of rear control and conductivity sensor detect current liquid in described inner core; Second acquisition module, for obtaining conductivity variations value according to described electrical conductivity B1 and described electrical conductivity calibration value B0, and obtains the electrical conductivity ratio between described conductivity variations value and electrical conductivity criterion value; First judge module, for judging whether described electrical conductivity ratio is less than or equal to the second predetermined threshold value; Described first control module also for when described first judge module judges that described electrical conductivity ratio is less than or equal to described second predetermined threshold value, exits rinse stage.

According to the control device of the embodiment of the present invention, after the sign on receiving user's input, pre-wash stage is entered at washing machine by the first control module, and obtain turbidity calibration value and electrical conductivity calibration value, after pre-wash stage terminates, second control module controls the first turbidity of current liquid in turbidity and conductivity sensor detection inner tank of washing machine, first acquisition module is by comparing the first turbidity value and turbidity calibration value obtains the first turbidity changing value, and determine washing parameter by the first turbidity changing value, wherein washing parameter comprises washing agent injected volume, slurry amount, first wash time etc., first control module controls washing machine according to washing parameter and enters the washing stage, before the washing stage terminates, detection module detects the second turbidity changing value of current liquid in inner tank of washing machine, first control module is when the second turbidity changing value equals the first predetermined threshold value, control washing machine and exit the washing stage, and enter rinse stage, second control module controls the electrical conductivity of current liquid in turbidity and conductivity sensor detection inner core after each rinsing terminates, second acquisition module obtains the changing value of electrical conductivity according to this electrical conductivity and electrical conductivity calibration value, and obtain the ratio of this changing value and electrical conductivity standard value, first judge module judges the relation of this ratio and the second predetermined threshold value, if be less than or equal to the second predetermined threshold value to prove do not had spot and washing agent to remain in clothing, first control module controls washing machine and enters rinse stage, thus end program, namely the control device of this washing machine can be done washing by complete monitoring, and according to the clean level of clothing, rational selection washing agent, the consumption of water and wash time, and while reaching clean clothing, can reduce and eliminate the residual of washing agent on clothing even completely, avoid the washing agent do not eliminated completely to the damage of user's skin, promote Consumer's Experience.

According to one embodiment of present invention, described first control module also for when described second turbidity changing value is less than or greater than described first predetermined threshold value, increases by the second wash time T1, and controls described washing of drum type washing machine, described second wash time T1.

According to one embodiment of present invention, described control device also comprises: the 3rd acquisition module, for when described first judge module judges that described electrical conductivity ratio is greater than described second predetermined threshold value, obtains current rinsing times; Second judge module, for judging whether described current rinsing times reaches preset times; Described first control module is also for when described second judge module judges that described current rinsing times reaches described preset times, exit described rinse stage, and when described second judge module judges that described current rinsing times does not reach described preset times, enter rinsing next time.Thus achieve the intelligence washing of clothing, the clothing of non-wash clean not only can be made to obtain the rinsing of limited number of times thus rinsed clean, but also it is long and cause the waste to resources such as water power to avoid washing machine rinsing time, the laundry improving user is experienced.

According to one embodiment of present invention, described first control module specifically for: obtain prewashing parameter, wherein, described prewashing parameter comprises prewashing water consumption L1 and prewashing time T0; Described prewashing water consumption L1 is put in described inner core; Control sample turbidity and sample electrical conductivity that described turbidity and conductivity sensor detect current liquid in described inner core, and using described sample turbidity and described sample electrical conductivity as described turbidity calibration value A0 and electrical conductivity calibration value B0; Controlling the described inner core prewashing time described in prewashing of carrying out is T0.Thus, by after pre-wash stage intakes L1 water level each time, control turbidity and conductivity sensor detect current liquid in inner core, and using the turbidity that detects and conductivity value as turbidity and electrical conductivity calibration value, washing machine can be made when carrying out clothes washing each time, when the first turbidity value is compared with electrical conductivity calibration value with turbidity calibration value with conductivity value, avoid because of different time, the difference of different local water quality and the error brought, thus make washing machine can judge the spot of clothing and the residual whether rinsed clean of washing agent exactly, and then the spot on clothing and washing agent zero are remained, improve user experience.

According to one embodiment of present invention, described first acquisition module specifically for: obtain the turbidity difference between described first turbidity A1 and described turbidity calibration value A0; Obtain the turbidity ratio between described turbidity difference and turbidity criterion value, and using described turbidity ratio as described turbidity changing value.

According to one embodiment of present invention, described first control module specifically for: in described inner core, put into described slurry amount L2; Control described detergent throwing device from described washing agent Storage Box, extract described washing agent injected volume M2, to make described detergent throwing device, described washing agent injected volume M2 is thrown in described inner core; Control described inner core and carry out the described first wash time T2 of washing.

According to one embodiment of present invention, described detection module specifically for: control the second turbidity A2 that described turbidity and conductivity sensor detect current liquid in described inner core, and after the preset lime, control the 3rd turbidity A3 that described turbidity and conductivity sensor detect current liquid in described inner core, wherein, described Preset Time is less than described first wash time T2; Described second turbidity changing value is obtained according to described 3rd turbidity A3 and described second turbidity A2.

For reaching above-mentioned purpose, the washing machine of third aspect present invention embodiment, comprising: inner core; Washing agent Storage Box, for storing washing agent; The detergent throwing device be connected with described washing agent Storage Box, for throwing in described inner core by the washing agent in described washing agent Storage Box; Be arranged at the turbidity in described washing machine on drainpipe and conductivity sensor, for detecting turbidity and the electrical conductivity of liquid in described inner core; And the control device described in second aspect present invention embodiment, wherein, described control device is connected with conductivity sensor with described detergent throwing device and described turbidity respectively.

According to the washing machine of the embodiment of the present invention, after the sign on receiving user's input, pre-wash stage is entered at washing machine by the first control module in control device, and obtain turbidity calibration value and electrical conductivity calibration value, after pre-wash stage terminates, second control module controls the first turbidity of current liquid in turbidity and conductivity sensor detection inner tank of washing machine, first acquisition module is by comparing the first turbidity value and turbidity calibration value obtains the first turbidity changing value, and determine washing parameter by the first turbidity changing value, wherein washing parameter comprises washing agent injected volume, slurry amount, first wash time etc., first control module controls washing machine according to washing parameter and enters the washing stage, before the washing stage terminates, detection module detects the second turbidity changing value of current liquid in inner tank of washing machine, first control module is when the second turbidity changing value equals the first predetermined threshold value, control washing machine and exit the washing stage, and enter rinse stage, second control module controls the electrical conductivity of current liquid in turbidity and conductivity sensor detection inner core after each rinsing terminates, second acquisition module obtains the changing value of electrical conductivity according to this electrical conductivity and electrical conductivity calibration value, and obtain the ratio of this changing value and electrical conductivity standard value, first judge module judges the relation of this ratio and the second predetermined threshold value, if be less than or equal to the second predetermined threshold value to prove do not had spot and washing agent to remain in clothing, first control module controls washing machine and enters rinse stage, thus end program, namely the control device of this washing machine can be done washing by complete monitoring, and according to the clean level of clothing, rational selection washing agent, the consumption of water and wash time, and while reaching clean clothing, can reduce and eliminate the residual of washing agent on clothing even completely, avoid the washing agent do not eliminated completely to the damage of user's skin, promote Consumer's Experience.

The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:

Fig. 1 is the flow chart of the control method of washing machine according to an embodiment of the invention;

Fig. 2 is the flow chart of the control method of washing machine according to the present invention's specific embodiment;

Fig. 3 is the structured flowchart of the control device of washing machine according to an embodiment of the invention;

Fig. 4 is the structured flowchart of the control device of washing machine in accordance with another embodiment of the present invention; And

Fig. 5 is the structural representation of washing machine according to an embodiment of the invention.

Reference numeral:

100: inner core; 200: washing agent Storage Box; 300: detergent throwing device; 400: turbidity and conductivity sensor; 500: control device; 510: the first control modules; 520: the second control modules; 530: the first acquisition modules; 540: detection module; 550: the second acquisition modules; 560: the first judge modules; 570: the three acquisition modules; 580: the second judge modules.

Detailed description of the invention

Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.

Below with reference to the accompanying drawings the control method of the washing machine of the embodiment of the present invention, device and washing machine are described.

Fig. 1 is the flow chart of the control method of washing machine according to an embodiment of the invention, it should be noted that, the washing machine of the embodiment of the present invention can comprise inner core, washing agent Storage Box, detergent throwing device and turbidity and conductivity sensor.Wherein, be appreciated that this turbidity and conductivity sensor can be an integrated sensor, turbidity and the electrical conductivity of the current liquid of inner tank of washing machine can be tested.Like this because, drainpipe in washing machine is connected with inner core, liquid communicates, turbidity and conductivity sensor to be arranged on drainpipe and to be in draining valve front end, so turbidity and conductivity sensor can detect the liquid in inner core, and when can ensure that inner core has liquid, liquid can cover the detection surface of turbidity and conductivity sensor.

As shown in Figure 1, the control method of the washing machine of the embodiment of the present invention, can comprise:

S1, after the sign on receiving user's input, controls washing machine and enters pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0.

Specifically, washing machine enters pre-wash stage and comprises acquisition prewashing parameter particularly, wherein, described prewashing parameter comprises prewashing water consumption L1 and prewashing time T0, be appreciated that above-mentioned prewashing parameter (as prewashing water consumption L1, prewashing time T0 etc.) is all in advance by empirical value that great many of experiments draws.That is, when getting above-mentioned prewashing parameter, as prewashing water consumption L1, prewashing time T0 etc., pre-wash stage can be entered afterwards according to this prewashing state modulator washing machine, namely in inner tank of washing machine, put into prewashing water consumption L1, and control inner core carries out prewashing to clothing, the prewashing time is T0.

Wherein, put into prewashing water consumption L1 in inner tank of washing machine after, sample turbidity and the sample electrical conductivity of current liquid in turbidity and conductivity sensor detection inner core can be controlled, and using sample turbidity and sample electrical conductivity as turbidity calibration value A0 and electrical conductivity calibration value B0, this can make washing machine when carrying out clothes washing each time, when turbidity value is compared with electrical conductivity calibration value with turbidity calibration value with electrical conductivity, avoid because of different time, the difference of different local water quality and the error brought, and using the turbidity of current liquid put into before cleaning solution washing and electrical conductivity as calibration value, make washing machine can judge the spot of clothing and the residual whether rinsed clean of washing agent more exactly, and then the spot on clothing and washing agent zero are remained, improve user experience.

S2, at the end of pre-wash stage, controls the first turbidity A1 of current liquid in turbidity and conductivity sensor detection inner core.

S3, obtains the first turbidity changing value according to the first turbidity A1 and turbidity calibration value A0, and according to the first turbidity changing value determination washing parameter, wherein, washing parameter comprises washing agent injected volume M2, slurry amount L2, the first wash time T2.

Specifically, obtaining the specific implementation process of the first turbidity changing value according to the first turbidity A1 and turbidity calibration value A0 can be as follows: obtain the turbidity difference between the first turbidity A1 and turbidity calibration value A0; Obtain the turbidity ratio between this turbidity difference and turbidity criterion value, and using this turbidity ratio as turbidity changing value.Afterwards can according to this turbidity changing value determination washing parameter.Wherein, turbidity criterion value is experimentally room test data gained, and different water turbidity criterion values also can be different, and occurrence can obtain according to a large amount of test data.

Further, in one embodiment of the invention, the table of comparisons of turbidity changing value and washing parameter is stored in washing machine, such as, in parameter lookup table, turbidity changing value codomain is divided into A, B, C, D tetra-codomain scopes, and each codomain scope corresponds to respective washing parameter.A scope corresponds to little washing, if turbidity changing value belongs to A codomain, so the parameter value of washing agent injected volume M2, slurry amount L2 will be relatively minimum; If turbidity changing value belongs to B codomain, so the parameter value of washing agent injected volume M2, slurry amount L2 will be relatively larger; If turbidity changing value belongs to C codomain, so the parameter value of washing agent injected volume M2, slurry amount L2 will be relatively large; If turbidity changing value belongs to D codomain, so the parameter value of washing agent injected volume M2, slurry amount L2 will be relatively maximum.It should be noted that, in the table of comparisons turbidity changing value obtain codomain scope and each codomain to washing parameter be draw according to a large amount of experiments, simultaneously, these empirical values also need to consider the factors such as clothes weight, the water yield, turbidity, make washing machine can meet the concrete condition of clothing when carrying out washing parameter judgement.

Further, in one embodiment of the invention, first wash time T2 draws according to great many of experiments, and it is fewer than general wash time, and it is when washing at every turn, the first wash time of presetting, if clothing is not very dirty, so clothing is after the time of washing T2, will by washes clean, thus make washing machine clean namely stop, save wash time.

For example, if the changing value of turbidity is large, then illustrate that user puts into the clothing of washing machine messy, so washing agent injected volume M2 will be large compared to the case values that turbidity changing value is little.That is, the clothing of user's washing is dirtier, more, and the washing agent of needs is more, and wash time is longer.

S4, controls washing machine according to washing parameter and enters the washing stage.

Particularly, washing machine can be controlled according to washing parameter M2, L2, T2 and enter the washing stage, can according to washing parameter determine main washed time the injected volume of washing agent, wash time and slurry amount, clothing is washed, namely after putting into slurry amount L2 in inner core, control detergent throwing device and from washing agent Storage Box, extract washing agent injected volume M2 to utilize the forms such as pump extraction, to make detergent throwing device throw in washing agent injected volume M2 to inner core, controlling the inner core time of carrying out afterwards is that the master of T2 washes.Wherein, main washing refers to washing machine and carries out the washing again after prewashing to clothing.Main washing is the process that washing machine utilizes washing agent and washs clothing, and it impels the spot on clothing by the process of detergent dissolution.

S5, before the washing stage terminates, detects the second turbidity changing value of current liquid in inner core.

Particularly, the specific implementation process detecting the second turbidity changing value of current liquid in inner tank of washing machine can be as follows: the second turbidity A2 controlling current liquid in turbidity and conductivity sensor detection inner core, and after the preset lime, control the 3rd turbidity A3 of current liquid in turbidity and conductivity sensor detection inner core, wherein, Preset Time is less than the first wash time T2; The second turbidity changing value is obtained according to the 3rd turbidity A3 and the second turbidity A2.

More specifically, the second turbidity changing value refers to the difference between the 3rd turbidity A3 and the second turbidity A2, i.e. the value of A3-A2.Afterwards the second turbidity changing value is judged.

S6, when the second turbidity changing value equals the first predetermined threshold value, exits the washing stage, and enters rinse stage.

Particularly, in one embodiment of the invention, the first predetermined threshold value is 0, if namely the value of A3-A2 equals 0, proves that turbidity of wash liquor no longer changes, and then illustrates that clothing is by washes clean, terminates washing, and enters rinse stage.

Further, in one embodiment of the invention, the control method of this washing machine also can comprise, if when above-mentioned second turbidity changing value is less than or is greater than the first predetermined threshold value, prove turbidity of wash liquor still in change, and then illustrate that clothing is not also by washes clean, so increase by the second wash time T1, and after controlling washing of drum type washing machine second wash time T1, perform step S6, namely, after the washing T1 time, can directly control washing machine and exit the washing stage, and enter rinse stage.

S7, each rinsing terminates the electrical conductivity B1 of current liquid in rear control turbidity and conductivity sensor detection inner core.

Particularly, turbidity and conductivity sensor can be arranged on washing machine sewer pipe place, after each rinsing terminates, the rinsing liquid that washing machine is discharged, through drainpipe, can control turbidity and conductivity sensor detect to obtain current rinsing liquid electrical conductivity B1 to the liquid flow through.

S8, obtains conductivity variations value according to electrical conductivity B1 and electrical conductivity calibration value B0, and obtains the electrical conductivity ratio between conductivity variations value and electrical conductivity criterion value, and judge whether electrical conductivity ratio is less than or equal to the second predetermined threshold value.

Wherein, in an embodiment of the present invention, the second predetermined threshold value is 1.In addition, electrical conductivity criterion value is experimentally room test data gained, and different water electric conductivity criterion values also can be different, and occurrence can obtain according to a large amount of test data.

Specifically, B1 value and electrical conductivity calibration value B0 can be carried out mathematic interpolation, namely obtain the value of △ B1=B1-B0, then △ B1 and electrical conductivity criterion value Δ B0 is carried out ratio calculation, obtain the ratio of Δ B1/ Δ B0, this ratio and the second predetermined threshold value can be carried out size afterwards and compare.

S9, if electrical conductivity ratio is less than or equal to the second predetermined threshold value, then exits rinse stage.

That is, if the ratio of Δ B1/ Δ B0 is less than or equal to the second predetermined threshold value, so can think there is no the residual of spot and washing agent in washings, and then prove not had in clothing remaining of spot and liquid detergent, thus exit rinse stage, terminate program.

Further, in one embodiment of the invention, the control method of this washing machine also can comprise: if electrical conductivity ratio is greater than the second predetermined threshold value, then obtain current rinsing times, and judges whether current rinsing times reaches preset times; If current rinsing times reaches preset times, then exit rinse stage; If current rinsing times does not reach preset times, then enter rinsing next time, and return step S7.

Particularly, if the number of times of now rinsing has reached the preset times of setting, so washing machine has just exited rinse stage, and wherein rinsing times is generally 3-4 time.That is, washing machine can not go down in unconfined rinsing, and this is the Infinite Cyclic rinsing in order to avoid the washing machine caused because of some special situations, avoids the waste of the resources such as water power.

Be appreciated that, if the number of times of now rinsing does not reach preset times, so washing machine then enters rinsing next time, returns and performs above-mentioned steps S7, continue circulation, till above-mentioned ratio is less than or equal to the second predetermined threshold value or rinsing times reaches preset times.

In order to make those skilled in the art understanding the present invention clearly, can illustrate below.

For example, as shown in Figure 2, washing machine operational process is as follows: washing machine is when receiving the sign on that user inputs washing machine, washing machine starts to start, washing machine enters pre-wash stage, first obtain prewashing parameter specifically, namely prewashing water consumption L1 is comprised, prewashing time T0, pre-wash stage is entered afterwards according to prewashing state modulator washing machine, namely in inner tank of washing machine, prewashing water consumption is put into, prewashing is intake the water level of L1, control turbidity and the electrical conductivity of current liquid in turbidity and conductivity sensor detection inner tank of washing machine, and the turbidity value recorded and conductivity value respectively as turbidity calibration value A0 and electrical conductivity calibration value B0, it is the prewashing (S210) of T0 that washing machine then starts the clothing time of carrying out, the turbidity value A1 that turbidity and conductivity sensor detect inner tank of washing machine current liquid is controlled after prewashing, obtain the first turbidity difference between turbidity value A1 and turbidity calibration value A0, turbidity changing value is obtained according to the first turbidity difference and turbidity criterion value, afterwards can according to this turbidity changing value determination washing parameter, washing parameter comprises washing agent injected volume M2, slurry amount L2, first wash time T2 (S220), now washing machine extracts in detergent amount M2 input inner core by detergent embarking device from washing agent Storage Box, and water inlet is to L2 water level, clothing is led and washes, first wash time is T2, wherein when control turbidity and conductivity sensor detect the second turbidity A2 of current liquid in inner core in the T2-2 moment, and after the preset lime, the i.e. T2-1 moment, control the 3rd turbidity A3 (S230) of current liquid in turbidity and conductivity sensor detection inner tank of washing machine, obtain the second turbidity changing value, namely the value of A3-A2 (wherein, T2-2 moment and T2-1 moment can be regarded as main two different times washed before time T2 will terminate).If A3-A2=0, then prove that turbidity of wash liquor does not change, and then prove that clothing is by washes clean, thus completes the washing to clothing, carries out draining, drying, and enter rinse stage to clothing.If when above-mentioned second turbidity changing value is less than or is greater than the first predetermined threshold value, prove turbidity of wash liquor still in change, and then illustrate that clothing is not also by washes clean, so increase by the second wash time T1, and after controlling washing of drum type washing machine second wash time T1, draining, drying are carried out to clothing, and enters rinse stage (S240).After entering rinse stage, at the end of each rinsing, control turbidity and conductivity sensor detect current liquid in inner tank of washing machine, to obtain the electrical conductivity B1 (S250) of current liquid, then the changing value of electrical conductivity is obtained according to electrical conductivity B1 and electrical conductivity calibration value B0, the i.e. value of △ B1=B1-B0, and the ratio obtained between conductivity variations value and electrical conductivity criterion, the i.e. value of Δ B1/ Δ B0, and judge the relation of this ratio and 1, if ratio is less than or equal to 1, show not had in washings the residual of spot and washing agent, and then in proof clothing, there is no the residual of washing agent and spot, thus the rinsing to clothing is completed, draining is carried out to clothing, dry, end program.If this ratio is greater than 1, then obtain current rinsing times, and judge whether rinsing times reaches preset times, if reach preset times, so washing machine exits current rinse stage, if do not reach default number of times, so washing machine carries out draining, drying to clothing, enter rinsing next time, continue circulation, till this ratio is less than or equal to 1 or rinsing times reaches preset times (S260).

In the control method of the washing machine of the embodiment of the present invention, after the sign on receiving user's input, be introduced into pre-wash stage, after pre-wash stage intakes L1, sample turbidity and the electrical conductivity of current liquid in turbidity and conductivity sensor detection inner tank of washing machine can be controlled, and using sample turbidity and sample electrical conductivity as turbidity calibration value and electrical conductivity calibration value, after pre-wash stage terminates, the first turbidity of current liquid in turbidity and conductivity sensor detection inner core can be controlled, and by the first turbidity is compared with turbidity calibration value, determine washing parameter, wherein, washing parameter comprises washing agent injected volume, slurry amount, first wash time etc., washing machine can enter the washing stage according to washing parameter afterwards, before the washing stage terminates, detect the second turbidity changing value of current liquid in inner tank of washing machine, when the second turbidity changing value equals the first predetermined threshold value, exit the washing stage, and enter rinse stage, then each rinsing terminates the electrical conductivity of current liquid in rear acquisition inner core, conductivity variations value is obtained according to this electrical conductivity and electrical conductivity calibration value, and the ratio obtained between conductivity variations value and electrical conductivity criterion value, and compare the relation of this ratio and the second predetermined threshold value, if be less than or equal to the second predetermined threshold value to prove do not had spot and washing agent to remain in clothing, thus exit rinse stage.Namely can do washing by complete monitoring, and according to the clean level of clothing, the consumption of rational selection washing agent, water and wash time, and while reaching clean clothing, can reduce and eliminate the residual of washing agent on clothing even completely, avoid the washing agent do not eliminated completely to the damage of user's skin, improve Consumer's Experience.

In order to realize above-described embodiment, the invention allows for a kind of control device of washing machine, Fig. 3 is the control device structured flowchart of washing machine according to an embodiment of the invention.It should be noted that, the washing machine of the embodiment of the present invention can comprise inner core, washing agent Storage Box, detergent throwing device and turbidity and conductivity sensor.Wherein, this turbidity and conductivity sensor can be arranged at drainpipe in washing machine and be on draining valve front end.

As shown in Figure 3, the control device of this washing machine can comprise the first control module 510, second control module 520, first acquisition module 530, detection module 540, second acquisition module 550 and the first judge module 560.

Particularly, the first control module 510, for after the sign on receiving user's input, controls washing machine and enters pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0.Wherein, the input instruction of user can be that user opens washing machine, when the clothing that will clean is put into the inner core of washing machine and presses the start button of washing machine, and the operation received by washing machine.

Specifically, in an embodiment of the present invention, first control module 510 can first obtain prewashing parameter, wherein, prewashing parameter comprises prewashing water consumption L1, prewashing time T0, prewashing water consumption L1 can be put into afterwards in inner core, after water level reaches L1, sample turbidity and sample electrical conductivity that turbidity and conductivity sensor detect current liquid in inner core can be controlled, and using sample turbidity and sample electrical conductivity as turbidity calibration value A0 and electrical conductivity calibration value B0, control inner core afterwards and carry out prewashing to clothing, the prewashing time is T0.

Second control module 520, at the end of pre-wash stage, controls the first turbidity A1 of current liquid in turbidity and conductivity sensor detection inner core.

First acquisition module 530, for obtaining the first turbidity changing value according to the first turbidity A1 and turbidity calibration value A0, and according to the first turbidity changing value determination washing parameter, wherein, washing parameter comprises washing agent injected volume M2, slurry amount L2, the first wash time T2.

In an embodiment of the present invention, the first control module 510 also enters the washing stage for controlling washing machine according to washing parameter, namely controls to put into slurry amount L2 in the inner core of washing machine; Control detergent throwing device from washing agent Storage Box, extract washing agent injected volume M2, to make detergent throwing device, washing agent injected volume M2 is thrown in inner core; First control module 510 controls inner core and carries out to clothing the washing that wash time is T2.

Detection module 540, before terminating in the washing stage, detects the second turbidity changing value of current liquid in inner core.

Specifically, in an embodiment of the present invention, detection module 540 can be as follows specifically for the specific implementation process of the second turbidity changing value detecting current liquid in inner tank of washing machine: control turbidity and conductivity sensor detect the second turbidity A2 of current liquid in inner core in the T2-2 moment, and after the preset lime, the i.e. T2-1 moment, control the 3rd turbidity A3 of current liquid in turbidity and conductivity sensor detection inner tank of washing machine, wherein, above-mentioned Preset Time is less than the first wash time T2.In addition, T2-2 moment and T2-1 moment can be regarded as main two different times washed before time T2 will terminate.

Further, in one embodiment of the invention, first control module 510 is also for when the second turbidity changing value is less than or greater than the first predetermined threshold value, turbidity of wash liquor value is described also in change, clothing is not also by washes clean, so increase by the second wash time T1, and control washing machine to clothes washing second wash time T1.

In an embodiment of the present invention, when the second control module 520 is also for terminating in the washing stage and entering rinse stage, each rinsing terminates the electrical conductivity B1 of current liquid in rear control turbidity and conductivity sensor detection inner core.

Second acquisition module 550 for obtaining conductivity variations value according to electrical conductivity B1 and electrical conductivity calibration value B0, i.e. the value of Δ B1=B1-B0, and obtains the ratio between conductivity variations value Δ B1 and electrical conductivity criterion value Δ B0.In addition, electrical conductivity criterion value is experimentally room test data gained, and different water electric conductivity criterion values also can be different, and occurrence can obtain according to a large amount of test data.

For example, after the second control module 520 controls turbidity after each rinsing terminates and conductivity sensor detects the electrical conductivity B1 of inner core current liquid, the electrical conductivity B1 of acquisition can compare to obtain conductivity variations value with electrical conductivity calibration value B0 by the second acquisition module 520, and obtains the ratio between conductivity variations value and electrical conductivity criterion value Δ B0.

First judge module 560 is for judging whether electrical conductivity ratio is less than or equal to the second predetermined threshold value.Wherein, above-mentioned ratio refers to the ratio between conductivity variations value and electrical conductivity criterion value.In addition, above-mentioned second predetermined threshold value can be 1.

In an embodiment of the present invention, the first control module 510 also for when the first judge module 560 judges that ratio is less than or equal to the second predetermined threshold value, exits rinse stage.

That is, if the ratio of Δ B1/ Δ B0 is less than or equal to predetermined threshold value, so the first control module 510 can be thought not to have had the residual of spot and washing agent in washings, and then proves not had in clothing remaining of spot and liquid detergent, thus exit rinse stage, terminate program.

According to the control device of the embodiment of the present invention, after the sign on receiving user's input, pre-wash stage is entered at washing machine by the first control module, and obtain turbidity calibration value and electrical conductivity calibration value, after pre-wash stage terminates, second control module controls the first turbidity of current liquid in turbidity and conductivity sensor detection inner tank of washing machine, first acquisition module is by comparing the first turbidity value and turbidity calibration value obtains the first turbidity changing value, and determine washing parameter by the first turbidity changing value, wherein washing parameter comprises washing agent injected volume, slurry amount, first wash time etc., first control module controls washing machine according to washing parameter and enters the washing stage, before the washing stage terminates, detection module detects the second turbidity changing value of current liquid in inner tank of washing machine, first control module is when the second turbidity changing value equals the first predetermined threshold value, control washing machine and exit the washing stage, and enter rinse stage.Second control module controls the electrical conductivity of current liquid in turbidity and conductivity sensor detection inner core after each rinsing terminates, second acquisition module obtains the changing value of electrical conductivity according to this electrical conductivity and electrical conductivity calibration value, and obtain the ratio of this changing value and electrical conductivity standard value, first judge module judges the relation of this ratio and the second predetermined threshold value, if be less than or equal to the second predetermined threshold value to prove do not had spot and washing agent to remain in clothing, first control module controls washing machine and enters rinse stage, thus end program, namely the control device of this washing machine can be done washing by complete monitoring, and according to the clean level of clothing, rational selection washing agent, the consumption of water and wash time, and while reaching clean clothing, can reduce and eliminate the residual of washing agent on clothing even completely, avoid the washing agent do not eliminated completely to the damage of user's skin, promote Consumer's Experience.

Further, in one embodiment of the invention, as shown in Figure 4, the control device of this washing machine also comprises the 3rd acquisition module 570 and the second judge module 580.

Particularly, the 3rd acquisition module 570, for when the first judge module 560 judges that ratio is greater than the second predetermined threshold value, obtains current rinsing times.

For example, user is when with washing of drum type washing machine clothing, if the first judge module 560 is by judging that the ratio between conductivity variations value and electrical conductivity criterion value Δ B0 draws, this ratio is greater than the second predetermined threshold value, so the 3rd acquisition module 570 now can obtain the number of times of the current rinsing of clothing, and rinsing times is here the rinsing times completed.

Second judge module, for judging whether current rinsing times reaches preset times.

In an embodiment of the present invention, the first control module 510 is also used in the second judge module 580 when judging that current rinsing times reaches preset times, controls washing machine and exits rinse stage.And when the second judge module 580 judges that current rinsing times does not reach preset times, control washing machine enters rinsing next time.

Can find out, by the judgement of the second judge module to rinsing times, namely meet the thought of the tradition laundry of " once not washing clean; just wash several times " more, ensure that clothing can washes clean as much as possible, turn avoid washing of drum type washing machine overlong time, or the state of (such as user's washing is that can not reuse, very dirty rag) and unlimited endless loop that the washing machine that causes enters because some special circumstances.

Thus, the number of times of the current rinsing of washing machine undergarment is obtained by the 3rd acquisition module, and judge whether current rinsing times reaches preset times by the second judge module, terminate the rinsing of clothing or make clothing enter rinsing next time, achieve the intelligence washing of clothing, the clothing of non-wash clean not only can be made to obtain the rinsing of limited number of times thus rinsed clean, but also avoiding the long and waste to resources such as water power that causes of washing machine rinsing time, the laundry improving user is experienced.

In order to realize above-described embodiment, the invention allows for a kind of washing machine.

Fig. 5 is the structural representation of washing machine according to an embodiment of the invention.As shown in Figure 5, this washing machine comprises control device 500 (not marking in Fig. 5) composition of inner core 100, washing agent Storage Box 200, detergent throwing device 300, turbidity and conductivity sensor 400 and washing machine.Wherein, detergent throwing device 300 is connected with washing agent Storage Box 200.

Particularly, washing agent Storage Box 200 can be used for storing washing agent.

In one embodiment of the invention, washing agent Storage Box 200 can be placed on the back of washing machine, the position that inside etc. are different, an opening be convenient to user and opened can be set, user can by this opening easily stored in washing agent, use for during washing of drum type washing machine clothing, simultaneously, washing machine also can arrange alarm for washing agent storage box 200, when user is when washing clothes, if detect that in washing agent Storage Box 200, remaining washing agent is inadequate, alarm user will add washing agent, time user adds washing agent, alarm can be utilized equally whether to fill it up with to point out washing agent.

Detergent throwing device 300 can be used for the washing agent in washing agent Storage Box 200 to throw in in the inner core 100 of washing machine.

Turbidity and conductivity sensor 400 are arranged at the drainpipe of washing machine and are on the position of draining valve front end, can be used for the turbidity and the electrical conductivity that detect liquid in inner core 100.Wherein, turbidity refers to the dirty degree of washings, such as, after most spots is water-soluble, the liquid that turbidity is very high can be formed, also can form the very high liquid of turbidity after some fabric softener is water-soluble, turbidity value can be used as washing machine and judges the important references index whether clothing cleans up.

Same, electrical conductivity refers to the concentration of washings intermediate ion, and whether electrical conductivity and turbidity spot and washing agent all for judging clothing have rinsed clean.

The control device 500 of washing machine is connected with conductivity sensor 400 with detergent throwing device 300 and turbidity respectively.The concrete function of control device 500 describes the functional description that can refer to the control device shown in above-mentioned Fig. 3 to Fig. 4, does not repeat them here.

In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.

In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.

In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.

Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.

According to embodiment of the present invention washing machine, after the sign on receiving user's input, pre-wash stage is entered at washing machine by the first control module in control device, and obtain turbidity calibration value and electrical conductivity calibration value, after pre-wash stage terminates, second control module controls the first turbidity of current liquid in turbidity and conductivity sensor detection inner tank of washing machine, first acquisition module is by comparing the first turbidity value and turbidity calibration value obtains the first turbidity changing value, and determine washing parameter by the first turbidity changing value, wherein washing parameter comprises washing agent injected volume, slurry amount, first wash time etc., first control module controls washing machine according to washing parameter and enters the washing stage, before the washing stage terminates, detection module detects the second turbidity changing value of current liquid in inner tank of washing machine, first control module is when the second turbidity changing value equals the first predetermined threshold value, control washing machine and exit the washing stage, and enter rinse stage.Second control module controls the electrical conductivity of current liquid in turbidity and conductivity sensor detection inner core after each rinsing terminates, second acquisition module obtains the changing value of electrical conductivity according to this electrical conductivity and electrical conductivity calibration value, and obtain the ratio of this changing value and electrical conductivity standard value, first judge module judges the relation of this ratio and the second predetermined threshold value, if be less than or equal to the second predetermined threshold value to prove do not had spot and washing agent to remain in clothing, first control module controls washing machine and enters rinse stage, thus end program, namely the control device of this washing machine can be done washing by complete monitoring, and according to the clean level of clothing, rational selection washing agent, the consumption of water and wash time, and while reaching clean clothing, can reduce and eliminate the residual of washing agent on clothing even completely, avoid the washing agent do not eliminated completely to the damage of user's skin, promote Consumer's Experience.

Claims

1. a control method for washing machine, is characterized in that, described washing machine comprises inner core, washing agent Storage Box, detergent throwing device and turbidity and conductivity sensor, and described method comprises:

S1, after the sign on receiving user's input, controls described washing machine and enters pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0;

S2, at the end of described pre-wash stage, controls the first turbidity A1 that described turbidity and conductivity sensor detect current liquid in described inner core;

S3, the first turbidity changing value is obtained according to described first turbidity A1 and described turbidity calibration value A0, and according to described first turbidity changing value determination washing parameter, wherein, described washing parameter comprises washing agent injected volume M2, slurry amount L2, the first wash time T2;

S4, controls described washing machine according to described washing parameter and enters the washing stage;

S5, before the described washing stage terminates, detects the second turbidity changing value of current liquid in described inner core;

S6, when described second turbidity changing value equals the first predetermined threshold value, exits the described washing stage, and enters rinse stage;

S7, each rinsing terminates the electrical conductivity B1 that the described turbidity of rear control and conductivity sensor detect current liquid in described inner core;

S8, conductivity variations value is obtained according to described electrical conductivity B1 and described electrical conductivity calibration value B0, and the electrical conductivity ratio obtained between described conductivity variations value and electrical conductivity criterion value, and judge whether described electrical conductivity ratio is less than or equal to the second predetermined threshold value;

S9, if described electrical conductivity ratio is less than or equal to described second predetermined threshold value, then exits rinse stage.

2. the control method of washing machine as claimed in claim 1, is characterized in that, also comprise:

S10, when described second turbidity changing value is less than or greater than described first predetermined threshold value, increases by the second wash time T1, and after the second wash time T1 described in the described washing of drum type washing machine of control, performs described step S6.

3. the control method of washing machine as claimed in claim 1, is characterized in that, also comprise:

S11, if described electrical conductivity ratio is greater than described second predetermined threshold value, then obtains current rinsing times, and judges whether described current rinsing times reaches preset times;

S12, if described current rinsing times reaches described preset times, then exits described rinse stage;

S13, if described current rinsing times does not reach described preset times, then enters rinsing next time, and returns described step S7.

4. the control method of washing machine as claimed in claim 1, is characterized in that, control described washing machine and enter pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0, specifically comprise:

Obtain prewashing parameter, wherein, described prewashing parameter comprises prewashing water consumption L1 and prewashing time T0;

Described prewashing water consumption L1 is put in described inner core;

Control sample turbidity and sample electrical conductivity that described turbidity and conductivity sensor detect current liquid in described inner core, and using described sample turbidity and described sample electrical conductivity as described turbidity calibration value A0 and electrical conductivity calibration value B0;

Control described inner core and carry out prewashing time T0 described in prewashing.

5. the control method of washing machine as claimed in claim 1, is characterized in that, obtain the first turbidity changing value, specifically comprise according to described first turbidity A1 and described turbidity calibration value A0:

Obtain the turbidity difference between described first turbidity A1 and described turbidity calibration value A0;

Obtain the turbidity ratio between described turbidity difference and turbidity criterion value, and using described turbidity ratio as described turbidity changing value.

6. the control method of washing machine as claimed in claim 1, is characterized in that, control described washing machine and enter the washing stage, specifically comprise according to described washing parameter:

Described slurry amount L2 is put in described inner core;

Control described detergent throwing device from described washing agent Storage Box, extract described washing agent injected volume M2, to make described detergent throwing device, described washing agent injected volume M2 is thrown in described inner core;

Control described inner core and carry out the described first wash time T2 of washing.

7. the control method of washing machine as claimed in claim 1, is characterized in that, detect the second turbidity changing value of current liquid in described inner core, specifically comprise:

Control the second turbidity A2 that described turbidity and conductivity sensor detect current liquid in described inner core, and after the preset lime, control the 3rd turbidity A3 that described turbidity and conductivity sensor detect current liquid in described inner core, wherein, described Preset Time is less than described first wash time T2;

Described second turbidity changing value is obtained according to described 3rd turbidity A3 and described second turbidity A2.

8. the control method of washing machine as claimed in claim 1, it is characterized in that, wherein, described first predetermined threshold value is 0, and described second predetermined threshold value is 1.

9. a control device for washing machine, is characterized in that, described washing machine comprises inner core, washing agent Storage Box, detergent throwing device and turbidity and conductivity sensor, and described device comprises:

First control module, for after the sign on receiving user's input, controls described washing machine and enters pre-wash stage, and obtain turbidity calibration value A0 and electrical conductivity calibration value B0;

Second control module, at the end of described pre-wash stage, controls the first turbidity A1 that described turbidity and conductivity sensor detect current liquid in described inner core;

First acquisition module, for obtaining the first turbidity changing value according to described first turbidity A1 and described turbidity calibration value A0, and according to described first turbidity changing value determination washing parameter, wherein, described washing parameter comprises washing agent injected volume M2, slurry amount L2, the first wash time T2;

Described first control module also enters the washing stage for controlling described washing machine according to described washing parameter;

Detection module, before terminating in the described washing stage, detects the second turbidity changing value of current liquid in described inner core;

Described first control module also for when described second turbidity changing value equals the first predetermined threshold value, exits the described washing stage, and enters rinse stage;

Described second control module also terminates for each rinsing the electrical conductivity B1 that the described turbidity of rear control and conductivity sensor detect current liquid in described inner core;

Second acquisition module, for obtaining conductivity variations value according to described electrical conductivity B1 and described electrical conductivity calibration value B0, and obtains the electrical conductivity ratio between described conductivity variations value and electrical conductivity criterion value;

First judge module, for judging whether described electrical conductivity ratio is less than or equal to the second predetermined threshold value;

Described first control module also for when described first judge module judges that described electrical conductivity ratio is less than or equal to described second predetermined threshold value, exits rinse stage.

10. the control device of washing machine as claimed in claim 9, it is characterized in that, described first control module also for when described second turbidity changing value is less than or greater than described first predetermined threshold value, increases by the second wash time T1, and controls the second wash time T1 described in described washing of drum type washing machine.

The control device of 11. washing machines as claimed in claim 9, is characterized in that, also comprise:

3rd acquisition module, for when described first judge module judges that described electrical conductivity ratio is greater than described second predetermined threshold value, obtains current rinsing times;

Second judge module, for judging whether described current rinsing times reaches preset times;

Described first control module is also for when described second judge module judges that described current rinsing times reaches described preset times, exit described rinse stage, and when described second judge module judges that described current rinsing times does not reach described preset times, enter rinsing next time.

The control device of 12. washing machines as claimed in claim 9, is characterized in that, described first control module specifically for:

Described prewashing water consumption L1 is put in described inner core;

The control device of 13. washing machines as claimed in claim 9, is characterized in that, described first acquisition module specifically for:

The control device of 14. washing machines as claimed in claim 9, is characterized in that, described first control module specifically for:

Described slurry amount L2 is put in described inner core;

The control device of 15. washing machines as claimed in claim 9, is characterized in that, described detection module specifically for:

The control device of 16. washing machines as claimed in claim 9, is characterized in that, wherein, described first predetermined threshold value is 0, and described second predetermined threshold value is 1.

17. 1 kinds of washing machines, is characterized in that, comprising:

Inner core;

Washing agent Storage Box, for storing washing agent;

The detergent throwing device be connected with described washing agent Storage Box, for throwing in described inner core by the washing agent in described washing agent Storage Box;

Be arranged at the turbidity in described washing machine on drainpipe and conductivity sensor, for detecting turbidity and the electrical conductivity of liquid in described inner core; And

Control device according to any one of claim 9-16, wherein, described control device is connected with conductivity sensor with described detergent throwing device and described turbidity respectively.