CN106835610A - A kind of washing machine and its control method - Google Patents

Abstract

The invention discloses a washing machine and a control method thereof. The washing machine includes a water storage tank, a laundry structure arranged in the water storage tank, and a circulating water treatment device arranged outside the water storage tank. The circulating water treatment device includes The flocculation treatment unit, the flocculation treatment unit, includes a flocculation container for flocculation treatment of the water discharged from the water tank, a flocculant dispenser for putting flocculant into the flocculation container, and an accelerated mixing device for increasing the dissolution rate of water and flocculant in the flocculation container And the accelerated reaction device for accelerating the flocculation reaction rate, and the water treated by flocculation in the flocculation container is re-discharged into the water storage cylinder for reuse. In the present invention, the washing water in the water tank is discharged to the flocculation treatment unit, and the flocculant is put into the flocculation treatment unit. During the flocculation reaction process, the work of the mixing device is accelerated to achieve the purpose of increasing the dissolution rate of the flocculant; at the same time, by Accelerate the work of the reaction device to achieve the purpose of increasing the flocculation reaction rate.

Description

A washing machine and its control method

This application is a divisional application of Chinese patent application 201410195462.3.

Original filing date: 2014-05-09

Original application number: 201410195462.3

Name of the original application for invention and creation: a washing machine and its control method

technical field

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

Background technique

With the improvement of people's living standards, the washing machine has become one of the main household appliances in people's daily life. The washing process of the washing machine mainly includes several stages of washing, rinsing and drying. After entering the rinsing stage, in order to rinse off the stains and residual detergent, it is necessary to enter more water or perform more rinsing times to rinse the clothes, which will consume a lot of water resources, even if it is a water-saving drum washing machine. Clothes also need to be rinsed at least twice, and this process consumes at least 30L of tap water. Sometimes there are less stains on the clothes or less detergent is put in, and it may be rinsed clean twice, but because the user chooses 3 rinses, it will inevitably cause waste of water resources. For example, a 6Kg fully automatic washing machine usually rinses twice. The basic water consumption for rinsing 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 so-called washing machines with water-saving functions generally install water storage tanks on the side of the washing machine, and use water pumps for water injection and drainage. Generally, water can be filled at one time. Rinse 3 times to save water. But the water after washing cannot be preserved, and the structure of the washing machine itself is complicated and huge, which is unfavorable for transportation, recycling and so on. Due to limitations in volume, structure, and flexibility, the original functions of the washing machine and the full play of the functions of the water-saving tank itself have been affected. In order to better save water resources on the basis of 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 plays the role of filtering lint, washing evenly or adding ozone and heavy metal ion sterilization. Water consumption cannot be improved, and there is no fundamental improvement to washing.

For the recycling of laundry water, relevant patent documents have been consulted, such as the "Washing Machine Circulating Water Water Saving Device" with application number 200810072420.5, which is to input laundry water into a water tank for purification. In this invention, the washing water of the first pass is directly drained without purification, and the rinsing water of the second and third passes is purified for use in the next laundry.

Among the above-mentioned technologies, the "recycling water technology" is used after purifying the rinse water. This technology cannot recycle the first wash water (initial wash water). Use in laundry.

In view of this, the present invention is proposed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a washing machine which utilizes flocculation filtration to treat washing water.

In order to solve the problems of the technologies described above, the present invention adopts the basic idea of technical solution to be:

A washing machine, comprising a water tank, a laundry structure arranged in the water tank, and a circulating water treatment device arranged outside the water tank, the circulating water treatment device includes a flocculation treatment unit, the flocculation treatment unit includes a The flocculation container for flocculation treatment of water, the flocculant dispenser for putting flocculant into the flocculation container, the accelerated mixing device for accelerating the dissolution of flocculant and water in the flocculation container, and the accelerated reaction device for accelerating the flocculation reaction rate, the flocculation treatment in the flocculation container The water is re-discharged into the water tank for reuse.

Further, the accelerated mixing device is composed of a stirring impeller installed in the flocculation container, and the stirring impeller is driven by a stirring motor to rotate to make the water in the flocculation container form a stirring water flow to increase the dissolution rate of the flocculant.

Further, the accelerated mixing device is composed of a circulation pump connected to the upper and lower parts of the flocculation container, so that the water in the flocculation container forms a circulating water flow through the circulation pump, so that the water in the flocculation container circulates to improve the dissolution of the flocculant rate.

Further, the accelerated reaction device is composed of an air pump connected to the flocculation container to blow air into the flocculation container to form bubbles in the water of the flocculation container, and stir the water mixed with the flocculant in the flocculation container during the rising process of the bubbles to make the flocculation container The water is agitated to increase the rate of flocculation reactions.

Further, the flocculation container is provided with a partition baffle that divides the internal space into two parts. The two parts of the flocculation container are the flocculation reaction tank and the flocculation mixing tank, and the acceleration mixing device is arranged in the flocculation mixing tank. , the accelerated reaction device is arranged in the flocculation reaction bucket, and a through hole is provided on the partition baffle, and a water inlet switch for controlling the on-off of the through hole is provided on the through hole; preferably, the flocculation mixing The barrel is arranged on the upper part of the flocculation reaction barrel.

Further, a rotating shaft protrudes from the inner wall of the flocculation container, the stirring impeller is mounted on the rotating shaft, and the rotating shaft is connected to a stirring motor that drives it to rotate.

Further, the stirring impeller includes a frame fixed on the rotating shaft, and at least two blades protruding from the outer periphery of the frame; preferably, each blade is arranged symmetrically with respect to the axis of the rotating shaft.

Further, the rotating shaft protrudes from the lower side wall or the upper side wall of the flocculation container, and extends toward the inside of the flocculation container; preferably, the rotating shaft extends vertically, and the rotating shaft is installed with Rotating stirring impeller.

Further, the rotating shaft protrudes from a side wall of the flocculation container and extends toward the interior of the flocculation container; preferably, the rotating shaft extends along the horizontal direction, and a stirring impeller rotating in the vertical direction is installed on the rotating shaft.

Further, the flocculation container is provided with at least one stirring impeller; preferably, the axes of rotation shafts corresponding to each stirring impeller are arranged parallel to each other; further preferably, the axes of rotation shafts corresponding to each stirring impeller are arranged on the same horizontal or vertical plane Inside.

Further, the rotation direction of each stirring impeller is the same or opposite; preferably, the rotation direction of at least one stirring impeller is different from other stirring impellers; further preferably, each stirring impeller is connected to the same stirring motor through a transmission structure.

Further, the lower part of the flocculation container and the filter container control the connection/disconnection between the two containers through the on-off control structure; broken control structure.

Further preferably, the bottom of the water storage cylinder is connected to the water inlet on the upper part of the flocculation container through the pipeline provided with the first drainage pump, and the water outlet at the bottom of the flocculation container is connected to the filter container through the pipeline provided with the second drainage pump.

Further, the water outlet of the first drainage pump communicates with the water inlet of the flocculation container through the pipeline provided with the first control valve, and communicates with the water outlet of the flocculation container through the pipeline provided with the second control valve.

Further, the water outlet of the second drainage pump communicates with the water inlet of the flocculation container through the pipeline provided with the first control valve, and communicates with the filter container through the pipeline provided with the second control valve.

Further, the washing machine is provided with a filter unit, including a filter container and a filter screen arranged in the filter container, the filter container is respectively connected with the flocculation container and the water storage cylinder, and the water treated by flocculation in the flocculation container is filtered and then discharged into the water storage cylinder to use again.

Further, the filter container is provided with a circulating water structure for discharging filtered water into the water storage cylinder, at least including a circulation outlet of the filter container and a circulation pipe, and the circulation pipe communicates the circulation outlet with the water storage cylinder; the filter screen will filter The inside of the container is divided into two parts, the first part communicates with the flocculation container, and the second part communicates with the water storage cylinder through the circulating water structure.

Further, the circulating water treatment device also includes a drainage structure that discharges water to the outside of the washing machine after work; preferably, the drainage structure is arranged on the filter container, including a drain port of the filter container and a drain pipe connected to the drain port And the drain valve that controls the on-off of the drain pipe.

Further, the flocculation container is provided with a water level sensor for detecting the water level in the flocculation container, and the flocculant dispenser is provided with a sensor for detecting the dosage of the flocculant.

Another object of the present invention is to provide a control method for the water-saving washing machine, 1) drain water from the water storage cylinder to the flocculation treatment unit, and put flocculant into the flocculation treatment unit, and accelerate the mixing device to start working;

2) When the set water level is reached, stop water entering the flocculation treatment unit;

3) After a certain time t1, the accelerated mixing device stops working, and the accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water;

4) After a certain time t2, the flocculation reaction is completed, the accelerated reaction device stops working, and the clean water flows back into the water storage tank for the washing machine to rinse;

5) Circulating the above water treatment process, so that the cleanliness of the water in the water storage tank meets the rinsing requirements.

Further, the specific method is as follows:

11) After the clothes are washed, the dirty washing water in the water tank is sent to the flocculation mixing bucket, and the flocculant is put into the flocculation mixing bucket, and the acceleration mixing device starts to work;

12) When the flocculation reaction barrel reaches the set water level L, stop water inflow to the flocculation treatment unit;

13) After a certain time t1, the acceleration mixing device stops working, the water inlet switch is turned on, and the water in the flocculation mixing tank flows into the flocculation reaction tank;

14) The accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water;

15) After a certain period of time t2, the flocculation reaction is completed, the accelerated reaction device stops working, and the clean water flows back into the water tank for rinsing in the washing machine;

16) Repeat the above cycle for a certain number of times N, so that the cleanliness of the water in the water tank meets the rinsing requirements.

Further, the mixing steps 11) to 13) of the flocculant and water in the flocculation mixing tank and the flocculation reaction steps 14) to 15) in the flocculation reaction tank are performed simultaneously.

Further, the water after the flocculation treatment in the flocculation treatment unit flows through the filter unit for filtration treatment, and then returns to the water storage cylinder for rinsing.

Further, after the rinsing is finished, all the water in the water storage cylinder is discharged into the flocculation treatment unit and the filter unit as flushing water, cleaned, and finally discharged out of the washing machine.

Further, the plurality of stirring impellers arranged in the flocculation container can simultaneously or separately rotate and stir the water flow.

Further preferably, each stirring impeller rotates in different directions to form water flows with different shapes and superimposed effects.

Further, the flocculation dispenser in the flocculation treatment unit automatically injects flocculant into the flocculation container, and controls the dosage of flocculant through the sensor installed on it and sends out an alarm signal when the flocculant in the flocculation dispenser is insufficient.

Further, after the rinsing is finished, all the water in the water storage cylinder is discharged into the flocculation treatment unit and the filter unit as flushing water, cleaned, and finally discharged out of the washing machine.

Further, the flocculation dispenser in the flocculation treatment unit automatically injects flocculant into the flocculation container, and the sensor set on it monitors the amount of flocculant in real time, and stops the injection when the detected value reaches the set value;

Preferably, the sensor provided on the flocculation dispenser detects the amount of flocculant in the flocculation dispenser, and when the detected value is lower than the minimum value, a signal is sent to remind the user to add it.

Further, the washing machine of the present invention also includes a detergent dispenser. The detergent dispenser is an existing technology, preferably a structure that utilizes water inlet negative pressure to extract detergent and dispense; the flocculant dispenser of the present invention is an automatic dispenser structure, According to the amount of washing water and the turbidity of washing/rinsing water, the corresponding proportion of flocculant is automatically added for each flocculation treatment.

Further, the present invention judges whether flocculation treatment is required according to the turbidity of the washing water detected after washing. When the turbidity is high, it can be directly and completely discharged, rinsed with clean water again, and then rinsed with flocculation cycle water after the first rinse; Or according to the range of turbidity, discharge a certain proportion of washing water, then enter tap water to reduce the turbidity, and then rinse with flocculation cycle water.

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

1. After washing, the water in the water tank is clean water, and there is no problem of washing powder residue or unclean rinsing on the clothes, which is beneficial to the health of the user;

2. The present invention can complete the whole washing process with only one water intake, saving water resources to the greatest extent without affecting the washing efficiency;

3. Since the water discharged from the washing machine after washing basically does not contain washing powder or detergent, it can reduce environmental pollution;

4. Install a stirring impeller on the flocculation treatment unit to make the water in the flocculation container form a stirring water flow to improve the efficiency of flocculation and dissolution;

5. An air pump is connected to the flocculation treatment unit to form rising air bubbles in the water in the flocculation container to stir the water, increase the activity of the flocculant, and achieve the purpose of accelerating the flocculation reaction rate.

Description of drawings

Fig. 1 is the structural representation of washing machine in the embodiment of the present invention;

Fig. 2 is a schematic structural view of a washing machine in another embodiment of the present invention;

Fig. 3 is a schematic structural view of a washing machine in another embodiment of the present invention;

Fig. 4 is a schematic structural view of a washing machine in another embodiment of the present invention;

Description of main components: 1—Water inlet valve, 2—Water tank, 3—First turbidity sensor, 4—First water level sensor, 5—First drainage pump, 6—Second drainage pump, 7—Flocculation container, 8 —Blowdown valve, 9—air pump, 10—second water level sensor, 11—second turbidity sensor, 12—water inlet switch, 13—separation baffle, 14—flocculant sensor, 15—flocculant dispenser, 16— Stirring motor, 17—stirring impeller, 18—detergent sensor, 19—detergent dispenser, 20—circulation pump, 21—flocculation mixing tank, 22—flocculation reaction tank, 23—filter unit, 231—filter container, 231— Filter screen, 24—the third water level sensor.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Embodiment one

As shown in Figures 1 to 4, the washing machine according to the embodiment of the present invention includes a casing, an outer cylinder disposed in the 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 part of the outer cylinder are respectively connected to the shell frame through a damper and a suspension spring, and the water inlet system includes a water inlet structure and a detergent dispenser 19 . The outer cylinder is the water holding cylinder 2, and the inner cylinder arranged in the outer cylinder is a laundry structure. The water inlet structure includes a water inlet pipe for feeding water into the water storage cylinder 2 and a water inlet valve 1 for controlling the on-off of the water inlet pipe. Preferably, a first water level sensor 4 is provided in the water storage cylinder 2 to detect the water level of the washing water in the water storage cylinder; a first turbidity sensor 3 is also provided in the water storage cylinder 2 to detect the washing water in the water storage cylinder. turbidity value. The detergent dispenser 19 communicates with the upper part of the water tank 2, and the detergent dispenser 19 is provided with a detergent sensor 18 for detecting the amount of detergent that the detergent dispenser flows into the water tank and the amount of detergent remaining in the detergent dispenser. quantity.

The washing machine described in this embodiment is provided with a circulating water treatment device outside the water storage cylinder 2 . The circulating water treatment device at least includes a flocculation treatment unit. The flocculation treatment unit includes a flocculation container 7 communicated with the water tank 2 and a flocculant dispenser 15 for injecting flocculant into the flocculation container 7, and the water tank 2 drains water into the flocculation container 7 for flocculation treatment. Preferably, the bottom of the water storage tube 2 is connected to the upper part of the flocculation container 7 through a pipeline provided with a first drainage pump 5, so that the water in the water storage tube flows into the flocculation container for flocculation reaction; the bottom of the flocculation container 7 The provided water return port is connected to the water storage cylinder 2 through the pipeline provided with the second drainage pump 6, so that the flocculated water in the flocculation container flows back into the water storage cylinder for rinsing. By arranging the first drainage pump and the second drainage pump, the purpose of controlling the water flow between the water storage tank and the flocculation container is realized.

The flocculation container 7 is also provided with a second water level sensor 10 to detect the water level in the flocculation container. The flocculation container 7 is provided with a second turbidity sensor 11 to detect the cleanliness of the water in the flocculation container. The flocculant dispenser 15 communicates with the upper part of the flocculation container 7, and the flocculant dispenser 15 is provided with a flocculant sensor 14 for detecting the amount of flocculant dispensed by the flocculant dispenser into the flocculation container and The remaining amount of flocculant in the flocculant dispenser.

Further, the circulating water treatment device further includes a drainage structure for discharging water to the outside of the washing machine after work. The drainage structure includes a drainage pipeline connected with the sewage outlet provided at the bottom of the flocculation container 7 and provided with a control pipeline on-off sewage valve 8 to discharge the water in the flocculation container to the outside of the washing machine.

Further, the flocculation container 7 is provided with an accelerated mixing device and an accelerated reaction device. The accelerated mixing device is used to accelerate the mixing of the flocculant and water in the flocculation container; the accelerated reaction device is used to accelerate the flocculation reaction between the mixed flocculant and the dirt in the water pipe.

The control method of the washing machine described in this embodiment is as follows:

1) After the clothes are washed, the dirty washing water in the water tank is sent to the flocculation container, and the flocculant is put into the flocculation container, and the acceleration mixing device starts to work;

2) When the flocculation container reaches the set water level L1, stop water entering the flocculation treatment unit;

3) After a certain time t1, the accelerated mixing device stops working, and the accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water;

4) After a certain period of time t2, the flocculation reaction is completed, the accelerated reaction device stops working, and the clean water flows back into the water tank for rinsing of the washing machine until the water in the flocculation container reaches the lowest water level L2;

5) Repeat the above cycle for a certain number of times N, so that the cleanliness of the water in the water tank meets the rinsing requirements.

Through the above method, not only the flocculation treatment of the washing water is ensured, but also the flocs in the flocculation container cannot be returned to the water storage cylinder, so as to avoid the occurrence of contamination of the clothes.

When the washing machine is rinsing, it performs a certain number of flocculation cycles until the final rinsing is completed. The rinsed water in the water tank is drained to the circulating water treatment device to re-clean the flocculation container, and then the cleaned water is discharged out of the washing machine through the drainage pipe.

Embodiment two

As shown in Figure 4, in the embodiment of the present invention, the circulating water treatment device of the washing machine can also include a filter unit 23, including a filter container 231 and a filter screen 232 arranged in the filter container 231, and the filter container 231 is connected with the flocculation filter respectively. The container 7 is communicated with the water storage cylinder 2, and the water of the flocculation treatment in the flocculation container is filtered and re-discharged into the water storage cylinder for reuse during rinsing.

Further, the filter 232 divides the inside of the filter container 231 into two parts, the first part communicates with the flocculation container 7 through a connecting pipe, and the second part communicates with the water tank 2 through a pipeline provided with the second drainage pump 6 .

It is also possible to set a drainage pipeline on the filter container to connect the filter container with the outside of the washing machine; a drain valve to control the on-off of the pipeline is set on the drainage pipeline to realize that the water after cleaning the circulating water treatment device is discharged to the washing machine Other purposes (not marked in the drawings).

In this embodiment, the control method of the washing machine is as follows:

1) After the clothes are washed, the dirty washing water in the water tank is sent to the flocculation container, and the flocculant is put into the flocculation container, and the acceleration mixing device starts to work;

2) When the flocculation container reaches the set water level L, stop water entering the flocculation treatment unit;

3) After a certain time t1, the accelerated mixing device stops working, and the accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water;

4) After a certain time t2, the flocculation reaction is completed, the accelerated reaction device stops working, and the clean water flows back into the flocculation container through the filter unit. During the backflow process, the flocs remain in the filter unit, and the clean water flows back into the water storage tank;

5) Repeat the above cycle for a certain number of times N, so that the cleanliness of the water in the water tank meets the rinsing requirements.

Through the above method, not only the flocculation treatment of the washing water is ensured, but also the flocs in the flocculation container cannot be returned to the water storage cylinder, so as to avoid the occurrence of contamination of the clothes.

Embodiment three

As shown in FIG. 2 , in this embodiment, the flocculation container 7 is divided into upper and lower independent parts by a partition baffle 13 , a flocculation mixing bucket 21 and a flocculation reaction bucket 22 . Preferably, the flocculation mixing tank 21 is arranged on the upper part of the flocculation reaction tank 22 . The flocculation mixing tank 21 is provided with an acceleration mixing device, and the flocculation reaction tank 22 is provided with an acceleration reaction device.

The partition baffle 13 is provided with a through hole, and the through hole is provided with a water inlet switch 12 that controls the opening and closing of the through hole to control the connection/disconnection between the flocculation mixing tank and the flocculation reaction tank, so as to realize the control of flocculation mixing. The purpose of turning on and off the water from the barrel to the flocculation reaction barrel.

Further, the partition baffle 13 is composed of a plate inclined from the outer circumference to the through hole, so that the water in the flocculation mixing bucket converges and flows toward the water inlet switch, so as to avoid the occurrence of water retention in the flocculation mixing bucket. Preferably, the through hole provided with the water inlet switch 12 is located at the center of the partition baffle 13 .

Further, the flocculation mixing bucket 21 is connected to the water outlet of the water storage cylinder 2 through the pipeline provided with the first drainage pump 5, and the flocculant dispenser 15 is connected to the flocculation mixing bucket 21; A third water level sensor 24 is also provided in the mixing bucket 21 to detect the water level of the water in the flocculation mixing bucket. The flocculation reaction barrel 22 communicates with the water tank 2 through the pipeline provided with the second drainage pump 6, and the drainage pipeline provided with the drain valve 8 communicates with the flocculation reaction barrel 22; the flocculation reaction barrel 22 A second water level sensor 10 and a second turbidity sensor 11 are arranged in it to detect the water level and cleanliness of the water in the flocculation reaction bucket.

In this embodiment, the control method of the washing machine is as follows:

11) After the clothes are washed, the dirty washing water in the water tank is sent to the flocculation mixing bucket, and the flocculant is put into the flocculation mixing bucket, and the acceleration mixing device starts to work;

12) When the flocculation reaction barrel reaches the set water level L, stop water inflow to the flocculation treatment unit;

13) After a certain time t1, the acceleration mixing device stops working, the water inlet switch is turned on, and the water in the flocculation mixing tank flows into the flocculation reaction tank;

14) The accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water;

15) After a certain period of time t2, the flocculation reaction is completed, the accelerated reaction device stops working, and the clean water flows back into the water tank for rinsing in the washing machine;

16) Repeat the above cycle for a certain number of times N, so that the cleanliness of the water in the water tank meets the rinsing requirement.

In this embodiment, the flocculation reaction tank and the flocculation mixing tank can also be composed of two independent containers, the bottom of the flocculation reaction tank is connected with the upper part of the flocculation mixing tank through a pipeline, and the pipeline is provided with a control A control device for managing on-off (not shown in the drawings).

In this embodiment, preferably, the mixing step carried out in the flocculation mixing tank is carried out synchronously with the flocculation reaction step carried out in the flocculation reaction tank; the specific steps are as follows:

1) After the clothes are washed, the dirty washing water in the water tank is sent to the flocculation mixing bucket, and the flocculant is put into the flocculation mixing bucket to accelerate the mixing device to start working;

2) When the flocculation reaction barrel reaches the set water level L, stop water inflow to the flocculation treatment unit;

3) After a certain time t1, the acceleration mixing device stops working, the water inlet switch is turned on, and the water in the flocculation mixing tank flows into the flocculation reaction tank;

41) The accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water;

42) Synchronized with step 41, after all the water in the flocculation mixing tank flows into the flocculation reaction tank, the water inlet switch is closed, and the dirty washing water in the water storage tank is sent to the flocculation mixing tank to the set water level L, and flows to the flocculation mixing tank. Put flocculant in the mixing tank to accelerate the mixing device to start working;

51) After a certain period of time t2, the flocculation reaction is completed, the accelerated reaction device stops working, and the clean water flows back into the water tank for rinsing in the washing machine;

52) After step 51) is completed, the water in the flocculation reaction tank flows back into the water storage tank, the water inlet switch is turned on again, and the water in the flocculation mixing tank flows into the flocculation reaction tank;

6) Repeat the above cycle for a certain number of times N, so that the cleanliness of the water in the water tank meets the rinsing requirements.

Embodiment Four

As shown in Figures 1 and 2, in the present embodiment, the accelerated mixing device is composed of a stirring impeller 17 arranged in the flocculation container 7, and the stirring impeller 12 is connected with the stirring motor 16 through a rotating shaft, so that The rotation of the stirring impeller 17 drives the water in the flocculation container 7 to form a stirring water flow, so as to achieve the purpose of accelerating the dissolution rate of the flocculant.

Further, the agitating impeller 17 can be arranged at any position where the water in the flocculation container can be in contact with the lower, upper, middle and lower parts of the flocculation container 7; The rotating shaft passing through the top of the flocculation container 7 is connected with the stirring motor 16 .

In this embodiment, the accelerated reaction device is composed of an air pump 9 communicated with the flocculation container 7, so as to blow air into the flocculation container 7 to form air bubbles that stir the water, so that the water in the flocculation container 7 and the flocculant are in the flocculation process. During the reaction process, it is constantly stirred by the rising air bubbles to achieve the purpose of increasing the flocculation reaction rate between the flocculant and the sewage in the water.

Further, the air pump 9 communicates with the bottom of the flocculation container 7 through a pipeline to form air bubbles in the water in the flocculation container 7 that rise from bottom to top.

Embodiment five

As shown in Fig. 3, in this embodiment, the described accelerated mixing device is composed of a circulation pump 20 arranged outside the flocculation container and connected to the upper and lower parts of the flocculation container 7 through pipelines; preferably, the inlet of the circulation pump 20 It communicates with the lower/upper part of the flocculation container 7, and the outlet of the circulating pump 20 communicates with the upper/lower part of the flocculation container to form a water circuit, so that the water in the flocculation container 7 forms a circulating water flow to accelerate the dissolution rate of the flocculant Purpose.

Embodiment six

The specific steps of the washing machine control method described in this embodiment are as follows:

washing

After selecting the required washing program and selecting the flocculation treatment function, press the start button, the washing machine will enter the water to the set water intake, and the motor will drive the inner cylinder to rotate, and the washing will start.

flocculation

After washing, the first drainage pump is turned on, and the dirty washing water is discharged into the flocculation container to the set water level, and the main control board adds a certain amount of flocs into the flocculation container through the flocculant dispenser according to the set program. The stirring impeller works for a certain period of time t1, and the water in the flocculation container is driven by the stirring impeller to form a water flow, so that the water in the flocculation container and the flocculant quickly dissolve and react; after a period of standing for a period of time t2, the flocculant will dissolve the water in the washing water The dirt contained in it condenses into large particles and floats in the container, and the bottom is treated clean water.

filter

After the flocculation is completed, the second drainage pump is turned on, and the clear water in the flocculation container will flow into the filter container. The filter screen in the filter container will block the flocs and dirt from the net, and the clean water will be pumped into the water tank again. Continue to rinse.

cycle

Repeat the above flocculation and filtration process until the end of rinsing.

Cleaning and draining

After the circulating water treatment is completed, the water in the water storage tank is discharged into the flocculation container again, and at the same time, the second drainage pump is turned on to enter part of the water into the filter container to clean the filter screen, and finally the sewage valve is opened to remove the flocculated dirt and the filter screen. The dirt, lint and water are discharged out of the washing machine together,

After rinsing, all the water in the water storage cylinder is discharged into the flocculation treatment unit and the filter unit as flushing water, cleaned, and finally discharged out of the washing machine.

Embodiment seven

The present invention judges whether flocculation treatment is needed according to the turbidity of the washing water detected after washing. Degree range, discharge a certain proportion of washing water, then enter tap water to reduce turbidity, and then flocculate and rinse with circulating water.

The washing machine of the present invention also includes a detergent dispenser. The detergent dispenser is a prior art, preferably a structure that utilizes water inlet negative pressure to extract and dispense detergent; the flocculant dispenser of the present invention is an automatic dispenser structure.

The implementations in the above examples can be further combined or replaced, and the examples are only descriptions of preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention. Various changes and improvements to the technical solutions of the present invention made by those skilled in the art belong to the protection scope of the present invention.

Claims (10)

1. A washing machine, comprising a water tank (2), a laundry structure located in the water tank (2) and a circulating water treatment device arranged outside the water tank, said circulating water treatment device comprising a flocculation treatment unit, characterized in in: The flocculation treatment unit includes a flocculation container (7) for flocculation treatment of the water discharged from the water storage tank (2), an acceleration reaction device for accelerating the flocculation reaction rate, and re-discharges the flocculation-treated water in the flocculation container into the water storage tank (2) use again. 2. A kind of washing machine according to claim 1, characterized in that: said accelerated reaction device is composed of a stirring impeller (17) arranged in the flocculation container (7), and said stirring impeller (17) is driven by a stirring motor ( 16) Driven to rotate. 3. A washing machine according to claim 1, characterized in that: the accelerated reaction device is composed of a circulating pump (20) connected to the upper and lower parts of the flocculation container (7), so that the flocculation container (7) The water in the tank forms a circulating water flow through the circulating pump (20). 4. A kind of washing machine according to claim 1, characterized in that: the accelerated reaction device is composed of an air pump (9) communicated with the flocculation container (7), so as to blow air into the flocculation container (7), Bubbles are formed in the water of the flocculation container (7), and the water mixed with the flocculant in the flocculation container (7) is stirred during the rising process of the bubbles. 5. A washing machine according to any one of claims 1 to 4, characterized in that: the flocculation treatment unit further includes a flocculant injector (15) for injecting flocculant into the flocculation container (7); Preferably, the flocculant dispenser (15) automatically or manually adds flocculant to the flocculation container (7). 6. A kind of washing machine according to any one of claims 1 to 5, characterized in that: the circulating water treatment device of the washing machine also includes a filter unit (23), including a filter container (231) and a filter container ( The filter screen (232) in 231), the filter container (231) is communicated with the flocculation container (7) and the water storage cylinder (2) respectively, and after the water of the flocculation treatment in the flocculation container is filtered, it is discharged into the water storage cylinder again for rinsing. use. 7. A washing machine according to claim 6, characterized in that: the filter screen (232) divides the inside of the filter container (231) into two parts, the first part communicates with the flocculation container (7) through a connecting pipe, The second part communicates with the water storage cylinder (2) through a pipeline provided with a second drainage pump (6). 8. A kind of washing machine according to claim 6, characterized in that: the filter unit (23) is a discarded filter paper filter, a filter bag filter, a self-cleaning filter, a manual cleaning filter one or a combination. 9. A control method for a washing machine according to any one of claims 1-8, characterized in that: 1) Drain water from the water tank to the flocculation treatment unit, and put flocculant into the flocculation treatment unit; 2) When the set water level is reached, stop water entering the flocculation treatment unit; 3) The accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water; 4) After a certain period of time t2, the flocculation reaction is completed, the accelerated reaction device stops working, and the clean water flows back into the water storage tank for the washing machine to rinse. 10. A washing machine control method according to claim 9, characterized in that: 11) After the clothes are washed, the dirty washing water in the water tank is sent to the flocculation mixing bucket, and the flocculant is put into the flocculation mixing bucket; 12) When the flocculation reaction barrel reaches the set water level L, stop water inflow to the flocculation treatment unit; 13) After a certain time t1, the water inlet switch is turned on, and the water in the flocculation mixing bucket flows into the flocculation reaction bucket; 14) The accelerated reaction device starts to work, and the flocculant reacts with water to generate flocs floating on the surface of the water and clean water; 15) After a certain time t2, the flocculation reaction is completed, the accelerating reaction device stops working, and the clean water flows back into the water storage tank for washing in the washing machine.