WO2015109910A1

WO2015109910A1 - Washing machine control method and washing machine

Info

Publication number: WO2015109910A1
Application number: PCT/CN2014/094402
Authority: WO
Inventors: 劳春峰; 武凤玲; 王先超; 车敏
Original assignee: 海尔集团技术研发中心; 海尔集团公司
Priority date: 2014-01-22
Filing date: 2014-12-19
Publication date: 2015-07-30
Also published as: CN104790180A; CN104790180B

Abstract

A washing machine control method and washing machine, said control method comprising: after wash water has been used for washing, performing a turbidity measurement to determine the turbidity value P of the wash water; according to the wash water turbidity value P, determining the number of flocculation cycles N of the wash water. According to the intake water amount L, the washing machine determines the number of base flocculation cycles N1 of the wash water; determining, according to the wash water turbidity value P, the number of variable flocculation cycles N2, to arrive at the number of flocculation cycles N=N1+N2 of the wash water. The washing machine comprises: a washing drum (2), a clothes-washing structure arranged inside the washing drum (2), and a flocculation processing unit arranged on the washing drum exterior; after water is flocculated in the flocculation container, said flocculation processing unit cleaning the flocculated water, producing clean water; discharging the water back into the washing drum (2) to be used once again by the washing machine for rinsing. The described method and device accurately control the number of washing machine flocculation cycles, improving efficiency in flocculation self-cleaning of the wash water.

Description

Control method of washing machine and washing machine

Technical field

The invention relates to the field of washing machines, in particular to a circulating water-saving washing machine, in particular to a washing machine control method and a washing machine.

Background technique

With the improvement of people's living standards, washing machines have become one of the main household appliances in daily life. The washing process of washing machines mainly includes several stages of washing, rinsing and drying. In the washing stage, washing machine water and detergent wash clothes. In order to rinse off the stains and residual detergent after entering the rinsing stage, it is necessary to take more water or perform more rinsing times to rinse the clothes, which will inevitably consume a lot of water resources, even if it is a water-saving drum washing machine, Rinsing clothes also needs to be rinsed at least twice, and this process consumes at least 30L of tap water. Sometimes the clothes have less stains or less detergent, and may be rinsed twice. However, because the user chooses 3 rinses, it will inevitably cause waste of water resources. For example, 6Kg automatic washing machine is generally used twice. The basic water consumption of the rinsing water is about 100 liters. How to save water and electricity while washing clothes has always been one of the focuses of consumers.

So far, there is no water purification and recycling device for household washing machines. Even the so-called washing machine with water-saving function generally installs a water storage tank on the side of the washing machine, and uses a water pump for water injection and drainage, and generally can inject water once. Rinse 3 times to save water. However, the washed water cannot be preserved, and the structure of the washing machine itself is complicated and large, which is not conducive to transportation, recycling and the like. Due to limitations in size, structure and flexibility, the original function of the washing machine and the function of the water-saving tank itself are fully exerted. In order to better save water resources on the basis of the existing laundry methods, many manufacturers have invested a lot of research and development.

The existing washing machine has the function of circulating water, which only functions to filter the wire, wash evenly or add ozone, heavy metal ion sterilization and the like. There is no way to improve water consumption and there is no fundamental improvement in washing.

The recycling of the washing water, after consulting the relevant patent documents, such as the application number 200810072420.5 "washing machine circulating water saving device", is to enter the washing water into a water tank for purification treatment. According to the invention, the washing water of the first pass is directly discharged without purification, and after the second and third passes of the rinsing water is purified, it is reserved for use in the next laundry.

Another commonly used sewage treatment method is a flocculation treatment method, which uses a flocculant to include in the sewage. The dirt is flocculated to cause the dirt in the sewage to become floc and moisture. The sewage treatment method is adopted, which is efficient, environmentally friendly, energy-saving and low in cost. Therefore, the combination of flocculation treated sewage and washing machine to generate a new circulating water washing machine has become a hot spot of innovation.

However, since the flocculant is directly discharged into the water tank of the washing machine to treat the washing water, the flocculant may cause secondary pollution to the laundry. In addition, the volume of the washing water is large and the turbidity is different.

The present invention has been made in view of the above.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a control method for a washing machine to achieve precise control of the number of washing water flocculation cycles.

In order to solve the above technical problem, the basic idea of the technical solution of the present invention is: a control method for a washing machine, comprising: performing turbidity detection on the washed water after washing to determine a turbidity value P of the washing water, according to the turbidity of the washing water The value P determines the number N of flocculation cycles of the wash water.

Further, determining the number of basic flocculation cycles N1 of the wash water according to the water intake amount L of the wash water; determining the number of variable flocculation cycles N2 according to the wash water turbidity value P, to obtain the number of flocculation cycles of the wash water N=N1+N2;

Preferably, the washing machine is provided with different water inlet amounts L, L1, L2, ... Ln, corresponding to different basic flocculation cycle times N1, and corresponding N1 are N11, N12...N1n, respectively.

Further, when the washing water turbidity value P ≥ the determination value P', N2 = m1; when the washing water turbidity value P < the determination value P', N2 = m2; and the maximum number of flocculation cycles > m1 ≥ m2 ≥ 0;

Preferably, when the wash water turbidity value P ≥ the determination value P', N2 = 1; when the wash water turbidity value P < the determination value P', N2 = 0.

When the washing water turbidity value P ≥ the determination value P', the variable flocculation cycle number N2 = 1; when the wash water turbidity value P < the determination value P', the variable flocculation cycle number N2 = 0.

Further, the determination value P' of the turbidity of the washing water is determined according to the water intake amount L of the washing water;

Preferably, the washing machine is provided with different water intake amounts L, L1, L2, ... Ln, corresponding to different washing water turbidity determination values P', and corresponding P' are respectively P1', P2'...Pn';

Further preferably, the height relationship of each water level of the washing machine is as follows, L1>L2>...>Ln-1>Ln; the corresponding set value of the washing water turbidity is as follows, P1′>P2′>... >Pn-1'>Pn'.

Further, the specific steps of the process of determining the number of flocculation cycles N are as follows.

1) determining the corresponding water intake amount L of the wash water;

2) according to the corresponding water intake amount L, call the basic flocculation cycle number N1 corresponding to the wash water and the determination value P' corresponding to the wash water turbidity;

3) detecting the turbidity value P of the washing water after the washing is completed, comparing the detected value P with the determination value P' corresponding to the turbidity of the washing water, and if P ≥ the determining value P', the number of variable flocculation cycles N2 = 1; <determination value P', the number of variable flocculation cycles N2=0;

4) According to the number of flocculation cycles of the washing water N = the number of basic flocculation cycles N1 + the number of variable flocculation cycles N2, the number N of flocculation cycles of the washing water is obtained.

Further, the specific steps of the washing machine flocculation procedure are as follows.

11) The washing water of the set volume V in the water tank flows into the flocculation processing unit;

12) placing a flocculating agent into the washing water flowing into the flocculation processing unit;

13) The washing water fully reacts with the flocculating agent, and the dirt in the washing water becomes a floc under the action of the flocculating agent, and the washing water becomes clean water;

14) Flocs float to the surface of the clean water;

15) Flocculation self-cleaning clean water is returned to the water tank;

The above steps 11) to 15) are a washing water flocculation cycle;

During the flocculation process of the washing machine, the steps 11) to 15) are repeatedly performed repeatedly, and the number of flocculation cycles of the washing machine is added once every time. When the number of flocculation cycles reaches N, the flocculation process of the washing machine ends.

Further, after the washing machine completes the number N of flocculation cycles, the turbidity detection of the washing water after the flocculation self-cleaning is completed to obtain the washing water turbidity value P, and when the washing water turbidity value P ≥ the rinsing set value Pmin, the water tank The washing water is discharged to the outside of the washing machine, and the washing machine is washed by the external normal water as the rinsing water to rinse the laundry; when the washing water turbidity value P<the rinsing set value Pmin, the washing machine uses the washing water in the water tank as the rinsing Water, rinse the clothes;

Preferably, after the flocculation cycle treatment is completed in the washing machine, the turbidity detection of the washing water in the water tank is performed to obtain the washing water turbidity value P, and when the washing water turbidity value P ≥ the rinsing set value Pmin, Sheng The washing water in the water tank is discharged to the outside of the washing machine, and the washing machine is rinsed by the external normal water as the rinsing water; when the washing water turbidity value P<the rinsing set value Pmin, the washing machine uses the washing water in the water tank to make the washing water Rinsing the clothes for rinsing the water;

Further preferably, after the flocculation cycle treatment is completed in the washing machine, the turbidity detection of the cleaned water after the flocculation treatment is performed to obtain the clean water turbidity value P1, when the clean water turbidity value P1 ≥ When the set value Pmin is rinsed, the washing water in the water tank is discharged to the outside of the washing machine, and the washing machine is rinsed by the external normal water as the rinsing water; when the clean water turbidity value P1<the rinsing set value Pmin, the washing machine The laundry is rinsed by using the washing water in the water tank as the rinsing water.

Further, after the washing machine is finished washing, the turbidity detection of the washing water after the washing is completed to obtain the washing water turbidity value P, and when the washing water turbidity value P ≥ the highest set value Pmax, the washing water in the water tank is discharged to In addition to the washing machine, the washing machine is flushed by the external normal water as the rinsing water; when the washing water turbidity value P < the highest set value Pmax, the washing machine is cyclically executed according to the above steps 11) to 15) to wash the water The flocculation treatment is carried out, and the washing water is flocculated to be clean water, and then returned to the water tank as a rinsing water to rinse the laundry.

Another object of the present invention is to provide a washing machine as described above, comprising: a water tank, a laundry structure provided in the water tank, and a circulating water treatment device disposed outside the water tank, the circulating water treatment The device comprises a flocculation processing unit, a flocculation processing unit, a flocculation container for flocculation treatment of water discharged from the water tank, a flocculant dispenser for discharging the flocculating agent into the flocculation container, and the flocculated water in the flocculation container is subjected to flocculation cleaning treatment. Generate clean water and re-discharge it into the water tank for reuse when washing the washing machine.

Further, the water tank is provided with a water level sensor to detect the water intake amount L of the water tank; the water tank is provided with a turbidity sensor to detect the turbidity value P of the water in the water tank.

Preferably, the flocculation container is provided with a water level sensor for detecting the amount of water in the flocculation container; and the water tank is provided with a turbidity sensor to detect the turbidity value of the water in the flocculation container.

Further, the circulating water treatment device further includes a drainage structure that discharges water to the outside of the washing machine at the end of the work, and discharges the floc and the washing water, the rinsing water, and the like after the flocculation of the washing machine to the outside of the washing machine.

After adopting the above technical solution, the present invention has the following advantageous effects compared with the prior art.

1. After the washing is finished, the water in the water tank is clean and clear water. The clothes do not have the problem of washing powder residue or uncleaning, which is beneficial to the health of the user's body;

2. The number of basic cycles is obtained by the water intake of the washing water in the water tank of the washing machine. Based on the turbidity of the washing water, the number of flocculation cycles is obtained, and the two are added to obtain an accurate number of flocculation cycles. Achieve the purpose of accurately determining the number of flocculation cycles;

3. Before the flocculation treatment of the washing water, the turbidity is detected to determine whether the washing water is too dirty, and the washing water cannot meet the rinsing requirement after the flocculation is completed;

4. After the flocculation treatment of the washing water, the turbidity is detected, and it is judged whether the washing water after the flocculation still cannot reach the rinsing requirement, so as to avoid the secondary pollution caused by the non-standard washing water to the laundry rinsing.

DRAWINGS

1 is a flow chart showing a control method of a washing machine in an embodiment of the present invention;

2 is a flow chart showing a preferred method of controlling a washing machine in an embodiment of the present invention;

3 is a flow chart showing a further preferred method of controlling a washing machine in accordance with an embodiment of the present invention;

4 is a schematic structural view of a washing machine in a sixth embodiment of the present invention;

Figure 5 is a schematic structural view of a washing machine in a seventh embodiment of the present invention;

Figure 6 is a schematic structural view of a washing machine in an eighth embodiment of the present invention;

Description of main components: 1 - inlet valve, 2 - water tank, 3 - first turbidity sensor, 4 - first level sensor, 5 - first drain pump, 6 - second drain pump, 7 - drain valve, 8—Air pump, 9—Second level sensor, 10—Second turbidity sensor, 11—Flocculation container, 12—Flocculant sensor, 13—Flocculant dispenser, 14—Detergent sensor, 15-Detergent dispenser , 16 - circulation pump, 17 - filtration device, 171 - filtration container, 172 - filter.

detailed description

The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

As shown in FIG. 4 to FIG. 6 , the washing machine according to the embodiment of the present invention includes a casing, an outer cylinder disposed in the outer casing, an inner cylinder disposed in the outer cylinder, a door body, a control panel, a water inlet system, and a driving motor. The bottom and upper portions of the outer cylinder are connected to the outer casing frame by a damper and a suspension spring, respectively, and the water inlet system includes a water inlet structure and a detergent dispenser 15. The outer cylinder is a water tank 2, and the inner cylinder disposed in the outer cylinder is a laundry structure. The water inlet structure includes an inlet pipe that supplies water to the water tank 2 and an inlet valve 1 that controls the inlet and outlet of the inlet pipe. The first water level sensor 4 is disposed in the water tank 2 to detect the water level of the washing water in the water tank to obtain the water intake amount L. The detergent dispenser 15 is in communication with the upper portion of the water tub 2, and the detergent dispenser 15 is provided with a detergent sensor 14 for detecting the amount of detergent inflow into the water tank and the detergent residue in the detergent dispenser. the amount. The first turbidity sensor 3 is further disposed in the water tank 2 to detect the turbidity of the washing water in the water tank to obtain a turbidity value P.

In the washing machine according to the embodiment of the present invention, a circulating water treatment device is disposed outside the water tank 2, and the circulating water treatment device includes at least a flocculation processing unit. The flocculation processing unit includes a flocculation container 11 communicating with the water tub 2 and a flocculant dispenser 13 for delivering a flocculating agent into the flocculation container 11. The flocculation container 11 The upper portion communicates with the water tank 2 via the first drain pump, and the washing water in the water tank 2 is discharged into the flocculation container 11 for flocculation treatment. The bottom of the flocculation container 11 is communicated with the water tub 2 via the second drain pump 6, and the clean water after the flocculation treatment in the flocculation container 11 is discharged into the water tub 2 for rinsing again.

A second liquid level sensor 9 is further disposed in the flocculation container 11 to detect the water level height of the flocculation water in the flocculation container. The flocculant dispenser 13 is in communication with the upper portion of the flocculation container 11, and the flocculant dispenser 13 is provided with a flocculant sensor 12 for detecting the release of the flocculant injected into the flocculation container 11 by the flocculant dispenser 13 The amount and amount of flocculant remaining in the flocculant dispenser 13. A second turbidity sensor 10 is provided in the flocculation vessel to detect the turbidity value of the wash water in the flocculation vessel.

The washing machine flocculation procedure includes the following steps:

11) The washing water of the set volume V in the water tank flows into the flocculation container through the first drain pump, so that the water level of the washing water in the flocculation container reaches a set value; wherein each flocculation cycle process washes into the flocculation container The water and water volume setting volume V is determined according to the water intake amount L of the washing water entering the water tank according to the need; and the water intake amount L of the washing water entering the water tank is determined according to the weight and/or material of the washing laundry, or The user directly sets, or is detected by the first liquid level sensor 4 provided on the water tank 2;

12) the flocculant dispenser is placed in the flocculation container;

14) Flocs float to the surface of the clean water;

15) Flocculation self-cleaning clean water is returned to the water tank;

16) The above steps 11) to 15) are a washing water flocculation cycle, and the above cycle is repeated a certain number of times N until the washing machine flocculation process ends.

In the embodiment of the present invention, the number N of the flocculation cycles is determined according to the wash water turbidity value P obtained by detecting the wash water after the washing is completed.

As shown in FIG. 1, the specific determination steps of the number N of flocculation cycles are as follows.

1) Determined according to the weight and/or material of the laundry, or directly set by the user, or detected by the first liquid level sensor provided on the water tank, the corresponding water intake amount L of the washing water, through the first liquid level sensor Making the tap water injected into the water tank as the corresponding water intake amount L;

2) According to the corresponding water intake amount L, the number of basic flocculation cycles N1 corresponding to the wash water and the corresponding wash water turbidity are called. Degree of determination P';

3) The first turbidity sensor in the water tank detects the turbidity value P of the washing water after the washing is completed, and compares the detected value P with the determination value P′ corresponding to the turbidity of the washing water, and if P ≥ the determination value P′, The number of variable flocculation cycles is N2=1; if P<determination value P', the number of variable flocculation cycles is N2=0;

In the present invention, the washing machine is provided with different water inlet amounts L, L1, L2, ... Ln, corresponding to different base flocculation cycle times N1, washing water turbidity determination value P', and inflow flocculation container during each flocculation cycle treatment process. The set volume V of the medium wash water, the corresponding N1 are respectively N11, N12...N1n; the corresponding P' are respectively P1', P2'...Pn'; the corresponding V are V1, V2... Vn. When the water level of the washing machine is L1, the corresponding number of basic flocculation cycles is N11, the corresponding washing water turbidity setting value is P1', the corresponding set volume is V1; and the washing machine water level is L2 The corresponding number of basic flocculation cycles is N12, the corresponding washing water turbidity determination value is P2', and the corresponding set volume is V2... When the water level of the washing machine is Ln, the corresponding basic flocculation cycle number is N1n, the corresponding set value of the wash water turbidity is Pn', and the corresponding set volume is Vn. The above n is an integer greater than 1. The above-mentioned N11, N12, ..., N1n and P1', P2', ..., Pn' and V1, V2, ..., Vn are all pre-existing setting values on the washing machine, which are called when the washing machine is washing.

For example, the washing machine is provided with three influent water levels corresponding to the influent water amount L, and the corresponding water inflow amounts of the three water levels are L1=14 liters, L2=30 liters, and L3=50 liters respectively; corresponding inflows during each flocculation cycle process The set volume V of the washing water in the flocculation vessel is V1=10 liters, V2=20 liters, and V3=20 liters respectively; the corresponding washing water turbidity determination values P′ are respectively P1′=500 NTU, P2′=500 NTU, P3'=500NTU; the corresponding number of basic flocculation cycles N1 are N11=3, N12=6, N13=9;

That is, 1) the washing machine obtains the washing water intake amount L=L1=14 liters through the laundry weight detecting program, and detects that the actually entering washing water volume is 14 liters by the first liquid level sensor;

2) calling the corresponding flocculation cycle number N11=3 corresponding to the wash water and the determination value P1′=500 NTU corresponding to the turbidity of the wash water;

3) The first turbidity sensor in the water tank detects the turbidity value P of the washing water after the washing is completed, and compares the detected value P with 500 NTU. If P≥500 NTU, the number of variable flocculation cycles N2=1; if P<500 NTU When the number of variable flocculation cycles is N2=0;

4) The number of flocculation cycles according to the washing water N = the number of basic flocculation cycles N1 + the number of variable flocculation cycles N2, The number of flocculation cycles N of the washing water is obtained; that is, when P<500 NTU, the number of flocculation cycles is N=3+0=3; when P≥500 NTU, the number of flocculation cycles is N=3+1=4.

Embodiment 1

As shown in FIG. 2, in the present embodiment, after the washing process of the washing machine is completed, the first turbidity sensor provided on the water tank performs turbidity detection on the washing water in the water tub to obtain the washing water turbidity value P. The wash water turbidity value P obtained by the above detection is compared with the maximum turbidity value Pmax.

When the washing water turbidity value P < the highest set value Pmax, the washing machine performs flocculation treatment on the washing water according to steps 11) to 16), and the clean washing water after the flocculation treatment is used as rinsing water to rinse the laundry.

When the washing water turbidity value P ≥ the maximum set value Pmax, the washing machine is executed according to the normal rinsing procedure: the washing water in the water tank is all discharged to the outside of the washing machine, and the washing machine is externally fed with water as rinsing water to rinse the clothes. .

The maximum turbidity value Pmax is the maximum turbidity value pre-existing in the washing machine to prevent the washing water from being too dirty, and the cleanliness of the washing water after the flocculation process is not up to standard, thereby reducing the washing time and improving the washing efficiency of the washing machine. the goal of.

Embodiment 2

As shown in FIG. 2, in the embodiment, after the flocculation process of the washing machine is completed, the first turbidity sensor provided on the water tank performs turbidity detection on the washing water in the water tank to obtain the washing after the flocculation is completed. Water turbidity value P. The wash water turbidity value P obtained by the above detection is compared with the rinse set value Pmin.

When the washing water turbidity value P < the rinsing set value Pmin, the washing machine uses the clean washing water after the flocculation treatment in the water tank as the rinsing water to rinse the laundry.

When the washing water turbidity value P ≥ the rinsing set value Pmin, the washing machine is further executed according to the normal rinsing procedure: the washing water in the water tank is all discharged to the outside of the washing machine, and the washing machine is made of external normal water as rinsing water, and the laundry is performed. rinsing.

The rinsing set value Pmin is a rinsing setting turbidity value pre-existing in the washing machine, so as to prevent the washing water after the flocculation treatment from being too dirty, the secondary pollution phenomenon of the laundry, and the purpose of improving the rinsing cleanliness of the laundry.

Embodiment 3

As shown in FIG. 3, in the embodiment, the specific steps of the washing machine control method are as follows:

21) After the washing machine is washed, the first turbidity sensor is used to perform turbidity check on the washing water in the water tank. The washing water turbidity value P is measured;

22) comparing the washing water turbidity value P with the highest set value Pmax; if P ≥ Pmax, the washing machine enters the normal rinsing process, the washing water is completely discharged, the tap water is re-introduced as the rinsing water from the outside, and the laundry is rinsed. Rinse, drain, drain, and end the laundry; if P < Pmax, perform step 23);

23) According to the water intake amount L of the washing water used in the washing machine washing program, the turbidity determination value P' corresponding to the washing water influx amount L, the number of basic flocculation cycles N1, and the washing into the flocculation container during each flocculation cycle treatment are called. Set volume of water V;

24) comparing P' with the wash water turbidity value P obtained in step 22); if P ≥ the determination value P', the number of variable flocculation cycles N2 = 1; if P < determination value P', the number of variable flocculation cycles N2=0;

25) According to the number of flocculation cycles of the washing water N = the number of basic flocculation cycles N1 + the number of variable flocculation cycles N2, the number N of flocculation cycles of the washing water is obtained;

26) The washing machine starts the flocculation process,

27) The washing water in the water tank flows into the flocculation container through the first drain pump, and when the second liquid level sensor detects that the water level of the washing water in the flocculation container reaches the set value, the washing water flowing into the flocculation container reaches the set value. When the volume V is, the first drain pump stops working;

28) the flocculant dispenser delivers a corresponding amount of flocculant to the flocculation container;

29) The washing water fully reacts with the flocculating agent, and the dirt in the washing water becomes floc under the action of the flocculating agent, and the washing water becomes clean water;

210) flocs float to the surface of the clean water;

211) detecting the turbidity value P1 of the clean water after flocculation treatment in the flocculation container by using the second turbidity sensor; comparing P1 with the rinsing set value Pmin; if P1 ≥ rinsing set value Pmin, the clean water after flocculation treatment If the standard is not up to standard, the washing machine enters the normal rinsing process, the washing water is completely discharged, the tap water is re-introduced as the rinsing water from the outside, and the laundry is rinsed. After the rinsing is finished, the draining and/or drying process is sequentially performed until the end of the washing; if P1<rinsing Set value Pmin, the clean water after flocculation treatment reaches the standard, step 212);

212) Flocculation self-cleaning clean water is returned to the water tank;

213) the number of times of flocculation is added once, and it is judged whether the number of flocculations after the accumulation reaches N; if not, step 27); if yes, step 214);

214) After the flocculation process is finished, the washing machine starts to rinse the clothes with the water after the flocculation treatment, and rinses After the end, the draining and/or drying process is performed in sequence to the end of the washing.

By determining the turbidity of the washing water after each flocculation, the cleanliness of the washing water after the flocculation treatment is prevented from reaching the standard, which causes the secondary pollution of the clothes to occur; at the same time, the flocculation treatment efficiency is also improved, and the flocculation process is avoided. , and then detect that the washing water is still not up to standard, resulting in waste of resources such as flocculants.

Embodiment 4

The present embodiment differs from the third embodiment in that the first turbidity sensor in the water tank detects the turbidity value P of the washing water after the washing is completed, and compares the detected value P with the determination value P′ corresponding to the turbidity of the washing water. If P ≥ the determination value P', the number of variable flocculation cycles N2 = m1; if P < determination value P', the number of variable flocculation cycles N2 = m2. The m1 is a positive integer greater than 0 and m2 is an integer greater than or equal to 0, and the maximum number of flocculation cycles > m1 ≥ m2 ≥ 0. Preferably, the m2=0, according to different water inflow amounts L corresponding to different m1 values, each m1 is an integer having the maximum number of flocculation cycles>m1>0.

Embodiment 5

The difference between the present embodiment and the third embodiment is as follows: the determination values P′ corresponding to the different water intake quantities L are each a set of determination values; that is, the different water intake amounts L are L1, L2, ... Ln, respectively, corresponding to different The value of the washing water turbidity determination group P', each group is P1', P2' ... Pn'; each group of determination values P' respectively contain at least two determination values of different sizes, respectively Pn1', Pn2'...Pnm'. Each of n and m described above is an integer greater than 1, and each of the above-described determination values P' is smaller than the maximum turbidity value Pmax.

The steps for determining the number of variable flocculation cycles N2 are as follows:

31) according to the washing water intake amount L of the washing machine, calling a corresponding determination group Pn', which includes a plurality of determination values Pn1', Pn2'...Pnm' arranged in order from large to small;

32) detecting the turbidity value P of the wash water and initializing N2 to 0;

33) comparing the wash water turbidity value P with Pn1', if P ≥ Pn1 ', N2 is cumulatively one; if P < Pn1' output N2;

The washing water turbidity value P is compared with Pn2'. If P≥Pn2', N2 is further increased by one; if P<Pn2' is outputting N2...

The wash water turbidity value P is compared with Pnm'. If P ≥ Pnm', N2 is further added one by one and N2 is output; if P < Pnm' is output N2.

By arranging the determination group by a plurality of determination values P' for different water intake amounts, different turbidity washing water pairs are realized. The number of flocculation cycles should be different to improve the accuracy of flocculation treatment of washing water.

Embodiment 6

As shown in Fig. 4, in the present embodiment, the lower portion of the flocculation container 11 is connected to the air pump 8. The air pump 8 blows air into the flocculation container 11, and agitates the washing water in the flocculation container 11 to rotate, thereby speeding up. The dissolution rate of the flocculating solvent achieves the purpose of increasing the reaction speed of the washing water and the flocculating solvent.

Example 7

As shown in FIG. 5, in the present embodiment, the flocculation container 11 is externally provided with a circulation pump 16, and the inlet end of the circulation pump 16 is connected to the lower portion of the flocculation container 11, and the outlet end of the circulation pump 16 and the upper portion of the flocculation container 11 are provided. Connected so that the washing water in the flocculation vessel 11 forms a circulating water flow to the lower portion of the flocculation vessel 11 to the upper portion of the circulation pump 16 to the flocculation vessel 11, accelerating the dissolution rate of the flocculating solvent and the washing water, and increasing the washing water and the flocculating solvent. The purpose of the reaction rate.

Example eight

As shown in FIG. 6, in the present embodiment, the circulating water treatment device further includes a filtering device 17, which includes a filtering container 171 and a filter 172 disposed in the filtering container. The filter 172 divides the inside of the filter container 171 into two parts, the first part communicates with the flocculation container 11 through a connecting pipe, and the second part communicates with the water tank 2 via a pipe provided with a second drain pump.

The filtering device 17 is in communication with the flocculation container 11 and the water holding tank 2, respectively, and the water after the flocculation treatment in the flocculation container 11 is filtered, and then re-flowed into the water tub 2 for reuse when the washing machine is rinsed. By adding a filtering device, the occurrence of flocculation with the washing water flowing back into the water tank is avoided, and the secondary pollution of the laundry by the floccule is avoided.

Example nine

As shown in FIG. 4 to FIG. 6 , in the embodiment, a second liquid level sensor 9 is disposed in the flocculation container 11 to detect the water level height of the water in the flocculation container 11 .

After the washing machine starts the flocculation process, the first drain pump 5 is turned on, and the washing water in the water tank 2 flows into the flocculation container 11, and when the second liquid level sensor 9 detects that the influent washing water reaches the set water level, the volume is the set value. After the washing water of V flows into the flocculation container 11, the first drain pump 5 is closed.

The flocculant dispenser 13 applies a set amount of flocculating solvent to the flocculation container to flocculate the washing water flowing into the flocculation container with the set water amount V, so that the dirt in the washing water becomes flocculated and floats to the flocculation treatment. After the clean water surface. After the flocculation treatment is completed, the clean water flows back into the water tub 2 from the water return port at the lower portion of the flocculation container.

During the clean water return process in the flocculation container, the second liquid level sensor 9 measures the water level of the clean water in real time, and when the water level of the clean water reaches the lowest value, the second drain pump 6 stops working, and the flocculation container 11 The clean water is no longer returned to the water tank 2 to prevent the flocculation of the floating water surface floating in the flocculation container from flowing back into the water tank. Thereby, the flocculation is prevented from flowing back with the clean water, resulting in the occurrence of secondary pollution of the laundry.

In the embodiment, preferably, the flocculation container 11 is provided with a second turbidity sensor 10 for detecting the turbidity of the clean water obtained after the flocculation treatment. When the turbidity of the clean water reaches the rinsing set value Pmin, the second drain pump 6 is opened to return the clean water; when the set value Pmin is not reached, the drain valve 7 and the first drain pump 5 are opened to make the water tank 2 The washing water in the whole is discharged to the outside of the washing machine through the flocculation container 11. Thereby, the secondary pollution caused by the clean water that does not meet the standard flocculation treatment is avoided.

Example ten

In the embodiment, the circulating water treatment device further includes a drainage structure that discharges water to the outside of the washing machine at the end of the work.

As shown in FIG. 4 to FIG. 5, in the present embodiment, the drainage structure is a drain pipe that communicates with the flocculation vessel 11 and a drain valve 7 that is disposed on the drain pipe and controls the drain pipe to open and close. The drain pipe is connected to the bottom of the flocculation container 11 at one end, and the other end is provided outside the washing machine to discharge washing water, flocs, and the like in the washing machine to the outside of the washing machine.

As shown in Fig. 6, in the present embodiment, the drain structure may be a drain pipe that communicates with the filter device 17, and a drain valve 7 that is provided on the drain pipe to control the drain pipe to open and close. The drain pipe is connected to the bottom of the filter device 17 at one end, and the other end is disposed outside the washing machine to discharge washing water, flocs, and the like in the washing machine to the outside of the washing machine.

The embodiments of the present invention may be further combined or substituted, and the embodiments are merely described for the preferred embodiments of the present invention, and are not intended to limit the scope and scope of the present invention. Various changes and modifications made by those skilled in the art to the technical solutions of the present invention are within the scope of the present invention.

Claims

A method for controlling a washing machine, characterized in that turbidity detection is performed on the washing water after washing is completed to determine a washing water turbidity value P, and the number N of flocculation cycles of the washing water is determined based on the washing water turbidity value P.
The control method of a washing machine according to claim 1, wherein the number of basic flocculation cycles N1 of the washing water is determined according to the water intake amount L of the washing water; the washing water turbidity value P is detected after the washing program is completed, and the variable is determined. The number of flocculation cycles is N2 to obtain the number of flocculation cycles of the washing water N=N1+N2.
The control method of a washing machine according to claim 2, wherein the washing machine is provided with different water intake amounts L, L1, L2, ... Ln, corresponding to different basic flocculation cycles N1, and the corresponding N1 is N11 respectively. , N12...N1n.
A control method of a washing machine according to claim 2, wherein when the washing water turbidity value P ≥ the determination value P', N2 = m1; when the washing water turbidity value P < the determination value P', N2 = m2; and the maximum number of flocculation cycles > m1 ≥ m2 ≥ 0.
A control method of a washing machine according to claim 4, wherein when the washing water turbidity value P ≥ the determination value P', N2 = 1; when the washing water turbidity value P < the determination value P', N2=0.
A control method of a washing machine according to claim 4, wherein the determination value P' of the turbidity of the washing water is determined in accordance with the water intake amount L of the washing water.
The control method of a washing machine according to claim 6, wherein the washing machine is provided with different water intake amounts L, L1, L2, ... Ln, corresponding to different washing water turbidity determination values P', corresponding P' is P1', P2'...Pn', respectively.
The control method of a washing machine according to claim 7, wherein the height relationship of each water level of the washing machine is as follows, L1>L2>...>Ln-1>Ln; setting of the corresponding washing water turbidity The value magnitude relationship is as follows, P1'>P2'>...>Pn-1'>Pn'.
A control method of a washing machine according to any one of claims 6 to 8, wherein the specific steps of the process of determining the number of flocculation cycles N are as follows.

1) determining the corresponding water intake amount L of the wash water;

2) according to the corresponding water intake amount L, call the basic flocculation cycle number N1 corresponding to the wash water and the determination value P' corresponding to the wash water turbidity;

3) Detecting the turbidity value P of the wash water after the completion of the washing, and determining the detected value P and the turbidity of the corresponding wash water P 'Comparative, if P ≥ the determination value P', the number of variable flocculation cycles N2 = 1; if P < determination value P', the number of variable flocculation cycles N2 = 0;

4) According to the number of flocculation cycles of the washing water N = the number of basic flocculation cycles N1 + the number of variable flocculation cycles N2, the number N of flocculation cycles of the washing water is obtained.
A control method of a washing machine according to any one of claims 1 to 8, wherein the specific steps of the flocculation procedure of the washing machine are as follows.

11) The washing water of the set volume V in the water tank flows into the flocculation processing unit;

12) placing a flocculating agent into the washing water flowing into the flocculation processing unit;

13) The washing water fully reacts with the flocculating agent, and the dirt in the washing water becomes a floc under the action of the flocculating agent, and the washing water becomes clean water;

14) Flocs float to the surface of the clean water;

15) Flocculation self-cleaning clean water is returned to the water tank;

The above steps 11) to 15) are a single wash water flocculation cycle.
The control method of a washing machine according to claim 10, wherein the flocculation process of the washing machine is repeatedly performed in accordance with the above steps 11) to 15), and the number of flocculation cycles of the washing machine is added once per cycle to the number of flocculation cycles. When N is reached, the washing machine flocculation process ends.
The control method of a washing machine according to any one of claims 1 to 8 or 11, wherein after the washing machine completes the number N of flocculation cycles, the turbidity of the washing water after the flocculation self-cleaning is detected to obtain turbidity of the washing water. Degree value P, when the washing water turbidity value P ≥ the rinsing set value Pmin, the washing water in the water tank is discharged to the outside of the washing machine, the washing machine is externally fed with water as rinsing water, and the laundry is rinsed; when the washing water is turbid When the degree value P<the rinse setting value Pmin, the washing machine uses the washing water in the water tub as the rinsing water to rinse the laundry.
The control method of a washing machine according to claim 12, wherein after the flocculation cycle treatment is completed, the washing water in the water tank is subjected to turbidity detection to obtain a washing water turbidity value P. When the washing water turbidity value P ≥ the rinsing set value Pmin, the washing water in the water tank is discharged to the outside of the washing machine, the washing machine is externally fed with water as rinsing water, and the laundry is rinsed; when the washing water turbidity value P<rinsing When the value Pmin is set, the washing machine uses the washing water in the water tub as the rinsing water to rinse the laundry.
The control method of a washing machine according to claim 13, characterized in that after the flocculation cycle treatment is completed every time, the turbidity check of the flocculated clean water returned into the water tank is performed. The clean water turbidity value P1 is measured. When the clean water turbidity value P1 ≥ the rinsing set value Pmin, the washing water in the water tank is discharged to the outside of the washing machine, and the washing machine is made of external normal water as the rinsing water, and the laundry is performed. Rinsing; when the clean water turbidity value P1 < the rinsing set value Pmin, the washing machine uses the washing water in the water tank as the rinsing water to rinse the laundry.
The control method of a washing machine according to any one of claims 1 to 8 or 11, or 13 or 14, wherein after the washing machine is finished, the turbidity of the washing water after the washing is detected to obtain turbidity of the washing water. Degree value P, when the washing water turbidity value P ≥ the maximum set value Pmax, the washing water in the water tank is discharged to the outside of the washing machine, the washing machine is externally watered as the rinsing water, and the laundry is rinsed; when the washing water is turbid When the degree value P<the maximum set value Pmax, the washing machine is cyclically executed according to the step 11) to the step 15) described in claim 10 to flocculate the washing water, and the washing water is flocculated into clean water and then returned into the water tank. As a rinse water, rinse the clothes.
A washing machine according to any one of claims 1 to 15, comprising: a water tank (2), a laundry structure provided in the water tank (2), and a circulating water treatment device disposed outside the water tank, The circulating water treatment device comprises a flocculation treatment unit, characterized in that:

The flocculation processing unit comprises a flocculation container (11) for flocculation treatment of water discharged from the water tank (2), a flocculant dispenser (12) for discharging a flocculating agent into the flocculation container (11), and flocculation treatment in the flocculation container After the water is flocculated and cleaned, it will be cleaned and re-discharged into the water tank for reuse in the washing machine.
A washing machine according to claim 16, wherein said water tank is provided with a water level sensor for detecting the water intake amount L of the water tank; and the water tank is provided with a turbidity sensor for detecting the water tank The turbidity value of water in water P.
A washing machine according to claim 17, wherein said flocculation container is provided with a water level sensor for detecting the amount of water in the flocculation container; said water tank is provided with a turbidity sensor for detecting flocculation The turbidity value of the water in the container.