CN105463791B - A kind of washing machine cycles water filtering judgment of clogging processing method - Google Patents

Abstract

The invention discloses a method for judging and processing circulating water filtration and clogging of a washing machine. The washing machine has a water treatment module, which is used to treat the water after washing or rinsing for reuse in the washing process; the water treatment module includes a water storage tank and a water storage tank. The filter screen in the water tank divides the internal space of the water storage tank into two chambers, the water inlet and the water outlet. The water inlet chamber is provided with a detection device for detecting the water level. The detection signal is transmitted to the main control board, and the main control board judges the degree of blockage of the filter screen, and controls the working state of the water treatment module or the washing machine according to the judgment result, and/or transmits the blockage information to the user. The invention has a simple structure, can detect filter clogging in a timely and effective manner, make different response methods according to different clogging degrees, save washing time, and realize human-computer interaction; the filter screen clogging treatment is diversified, and the timely treatment can relatively prolong the use of the filter screen life.

Description

A method for judging and treating the clogging of a washing machine circulating water filter

technical field

The invention relates to the field of washing machines, in particular to a method for treating circulating water of a washing machine, in particular to a method for judging and treating the filtration blockage of the circulating water of a washing machine.

Background technique

With the improvement of people's living standards, washing machines have now become one of the main household appliances in people's daily life. The laundry process of the washing machine mainly includes several stages of washing, rinsing, and drying. During the washing stage, the washing machine enters water and detergent to wash the clothes. , after entering the rinsing stage, in order to rinse the stains and residual detergent, it is necessary to enter more water or perform more rinsing times to rinse the clothes, which will inevitably consume a lot of water resources, even for a water-saving front-loading washing machine, in order to Rinse clothes also need to be rinsed at least twice, and this process consumes at least 30L of tap water. Sometimes there are fewer stains on the clothes or less detergent is put in, and it may be rinsed twice. However, because the user chooses 3 rinses, it will inevitably lead to waste of water resources. For example, a 6Kg fully automatic washing machine usually takes two rinses. The basic water consumption of rinsing water is about 100 liters. How to save water and electricity while washing clothes has always been one of the focuses of consumers.

In order to reduce the washing water, we use the flocculation method to treat the washing water, and use the treated water for rinsing. The flocculant reacts with the stains and detergents in the washing water to form flocs, which settle or float, so that the water and pollutants are separated to achieve the purpose of purification. During normal reaction, the water in the lower part can be directly returned to the washing tub for rinsing, but when the reaction effect is not ideal, the water in the lower part will still contain some small flocs, so in order to improve the water quality after the reaction, a filter device is still needed; When an abnormality occurs, the flocculation is incomplete or the flocs sink, resulting in a large amount of flocs in the water, and a filter device is needed to prevent the sewage from entering the washing tub and contaminating the clothes. Since the filter device will absorb dirt, which will gradually accumulate and cause blockage, affecting the filtering function, it needs to be cleaned in time to ensure the normal use of the filter device. In the existing scheme, the filter screen is automatically cleaned on a regular basis, and the use period is fixed at intervals or the cleaning work is performed after each period of use.

There are two main methods for the applicant to apply for automatic cleaning of the filter screen. One is to make the filter screen into a barrel shape, and the filter screen barrel is driven by a motor to rotate, and centrifugal force is used to shake off the dirt adhering to the screen. This method requires a motor to drive a high-speed rotating centrifugal force to separate the dirt, so the strength of the material of the filter bucket is high, and the separation is more difficult when the dirt viscosity is high, so it is very impractical. Another way is to also make the filter into a barrel shape, and the high-pressure water flows through the nozzle to flush the filter bucket from a certain angle, and drives the filter to rotate while flushing, so as to achieve the purpose of comprehensive cleaning. In this method, the source of the water pressure of the high-pressure water flow is difficult, and the tap water pressure of different users’ homes is very different, so the cleaning effect cannot be guaranteed, and the cost of using a pressurized pump to achieve the required water pressure is too high, and it is not suitable for widespread use; in addition, the high-pressure water flow The strong pressure of the filter will cause some dirt to enter the inside of the filter bucket. If it cannot be drained in time, it will be deposited in the bucket, and even enter the washing bucket with the filtered water flow in subsequent use, causing pollution. The above methods are to clean the filter screen regularly. When the cleaning frequency is too frequent, water or electricity will be wasted. When the cleaning frequency is too low, the filter screen will be blocked and affect the normal operation.

The present invention has been made in view of this.

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 washing machine that can judge the blockage of the filter screen in time, control the water treatment module and the washing machine according to the judgment result, and perform the filter screen cleaning. method.

In order to solve the above-mentioned technical problems, the basic idea of the technical solution adopted in the present invention is: a method for judging and treating the clogging of circulating water in a washing machine. The washing machine has a water treatment module, which is used to treat the water after washing or rinsing so as to be reused in the washing process. ; The water treatment module includes a water storage tank and a filter screen arranged in the water storage tank. The filter screen divides the internal space of the water storage tank into two chambers of water inlet and water outlet, and the water inlet chamber is provided with a detection device for detecting the water level. , the detection device detects the water level of the water inlet chamber, and transmits the detection signal to the main control board. The main control board judges the degree of clogging of the filter screen, and controls the working state of the water treatment module or the washing machine according to the judgment result, and/or Congestion information is passed to the user.

During water treatment of the washing machine of the present invention, when the water flows into the water inlet chamber through the water inlet, the water in the water inlet chamber flows through the filter screen, enters the water outlet chamber, and then flows out through the water outlet. In the process of water passing through the filter screen, the large particles of impurities in the water will be intercepted by the filter screen, and at the same time some of them will adhere to the filter screen. Gradually, the filter screen will be blocked by impurities, and the speed of water passing through the filter screen will decrease. , it will affect the normal progress of the water treatment process. Usually, the speed of water entering the water inlet is constant. When the filter screen is blocked, the water level in the water inlet chamber will rise. The higher the height, the higher the height of the water in the water inlet chamber is used as the basis for judging the blockage of the filter screen, and the working state of the water treatment module and/or the washing machine is controlled according to the judgment result, and/or the blockage information is transmitted through the main control board. to users.

Further, an overflow port is provided at the set height of the water inlet chamber, which is connected to the overflow pipeline, and the detection device is arranged in the overflow pipeline. The device sends a signal to the main control board, and the main control board judges that the filter is blocked.

Alternatively, the above alternative solution is that a float switch is provided at the set height of the water inlet chamber. When the water level rises to the set height, the switch driven by the float is closed, and the signal is transmitted to the main control board. The board judges that the filter is clogged.

Further, after judging that the filter screen is blocked, continue to run the current washing work, and give a filter screen blockage alarm after the current washing work is completed or before the next washing starts, prompting the user to clean the filter screen.

Further, the degree of filter blockage is judged according to the time taken from the water in the water inlet chamber to the time when the filter screen is blocked. When the detection time is less than the set time, it is judged that the filter screen is severely blocked, the water treatment is stopped, and the washing machine directly drains the water and then enters clean water Complete this washing work, on the contrary, when the detection time is not less than the set time, it is judged that the filter screen is slightly blocked, then continue to run this washing work, after this washing work is completed, or before the next washing starts, give the filter screen Blockage alarm, prompting the user to clean the filter.

A further alternative is that a water level detection device for collecting water level height information in real time is arranged in the water inlet chamber, and the clogging degree of the filter screen is judged according to the detected water level heights.

Still alternatively, in the above alternative solution, an opening is arranged on the side wall or bottom of the water inlet chamber, and a pressure detection device is arranged at the opening, and the clogging degree of the filter screen is judged according to the detected different water pressures.

Further, the water inlet chamber is provided with a drain pipe, and the drain pipe is provided with a drain valve. When the detection result is greater than the set value, the main control board sends a signal to open the drain valve, and the inlet water of the water inlet chamber directly passes through. The drain pipe is drained away, and the water in the water outlet chamber flows back to flush the filter screen.

Further, the main control panel of the washing machine makes different response methods according to different clogging degrees; and prompts the user about the clogging degree in different prompting methods. Preferably, the prompting method is dynamic percentage or progress or color or sound.

Further, when the detection result is higher than H1, it is judged to be slightly blocked, and the user is prompted to clean the filter screen after the end of the program;

When it is higher than H2, it is judged to be moderately blocked, and the user is prompted to clean the filter screen after the end of the program, and the cleaning prompt will be maintained during the next operation. The user can manually confirm that the filter screen has been cleaned before running the program normally;

When it reaches the height of H3, it is judged as a serious blockage, and there are two processing methods: a, suspend the program, alarm, clean the filter screen, continue washing, after the washing is over, alarm and clean the filter screen; b, interrupt the existing program, transfer to For the washing program without water treatment function, after the current washing is completed, after the washing is completed, the alarm will be alarmed and the filter screen will be cleaned; the cleaning alarm will be maintained in the next operation, and the program will run normally only after the user manually confirms that the filter screen has been cleaned. The washing program without the water treatment function is the existing normal washing. After each washing and rinsing is completed, the water is drained first, and then the water is fed to the set water level to perform the next step.

Further, when the degree of clogging of the filter screen jumps and changes during a washing cycle, a fault alarm is performed, and the water treatment module is faulty.

Further, the washing machine has the function of automatic cleaning of the filter screen. When it is judged that the filter screen is slightly or moderately blocked, there is no need to prompt the user after the program ends, and it will directly transfer to the automatic filter screen cleaning program. Go directly to the automatic filter cleaning program. The automatic filter cleaning program corresponds to different clogging degrees and selects filter cleaning methods with different strengths and/or times.

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

The invention has a simple structure, can timely and effectively detect filter clogging, and judge different clogging degrees of the filter screen, so that the main control board can make different response methods according to different clogging degrees, save washing time, realize human-computer interaction, and can better Control the work of the filter screen; filter blockage treatment is diversified, and timely treatment can relatively prolong the service life of the filter screen.

Description of drawings

Fig. 1 is the structural schematic diagram of the water storage tank of the present invention;

2 is a schematic diagram of a filter clogging detection device according to an embodiment of the present invention;

3 is a schematic diagram of a filter clogging detection device according to Embodiment 2 of the present invention;

4 is a schematic diagram of a filter clogging detection device according to Embodiment 4 of the present invention;

5 is a schematic diagram of a filter clogging detection device according to Embodiment 5 of the present invention;

FIG. 6 is another structural schematic diagram of the water storage tank according to the present invention.

Detailed ways

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

As shown in FIG. 1 to FIG. 6 , the washing machine of the present invention has a water treatment module for treating the water after washing or rinsing so as to be reused in the washing process; the water treatment module includes a water storage tank 1 and a Inside the filter screen 2, the filter screen 2 divides the internal space of the water storage tank 1 into a water inlet chamber 3 and a water outlet chamber 4, the water inlet chamber 3 is provided with a water inlet 31, and the water outlet chamber 4 is provided with a water outlet 41. The water inlet chamber 3 is provided with a detection device 5 for detecting the water level. The detection device 5 detects the water level of the water inlet chamber 3 and transmits the detection signal to the main control board, which judges the degree of blockage of the filter screen 2. , and control the working state of the water treatment module or the washing machine according to the judgment result, and/or transmit the blockage information to the user.

When the washing machine of the present invention is used for water treatment, when the water flow directly discharged after washing or the water flow that has been previously treated, such as the water after flocculation treatment, enters the water inlet chamber 3 through the water inlet 31, the water in the water inlet chamber 3 flows through the filter The net 2 enters the water outlet chamber 4, then flows out through the water outlet 41, and is introduced into the outer tub of the washing machine for recycling. In the process of water passing through the filter screen 2, the large particles of impurities in the water will be intercepted by the filter screen 2, and part of the impurities will adhere to the filter screen 2 at the same time. When the speed drops to a certain level, it will affect the normal progress of the water treatment process. Usually, the speed at which water enters the water inlet 31 of the water inlet chamber 3 is constant. When the filter screen 2 is blocked, the water level in the water inlet chamber 3 will rise. The faster the water level in the chamber 3 rises and the higher the height reached, the present invention uses the change of the water level in the water inlet chamber 3 as the basis for judging that the filter screen 2 is blocked, and controls the water treatment module and/or the washing machine according to the judgment result. the working status, and/or transmit the blockage information to the user through the main control board.

Example 1

As shown in FIG. 2 , in this embodiment, an overflow port 32 is provided at the set height of the water inlet chamber 3 , which is generally located at the highest part of the side of the water inlet chamber 3 or at the top of the water inlet chamber 3 . 32 is connected to the overflow pipeline 33, the detection device 5 is set in the overflow pipeline 33, the detection device 5 uses the electrode 51 to connect the circuit to realize detection, after the filter screen 2 is blocked, the water inlet speed is greater than the water outlet speed, and the water inlet The water level of the chamber 3 rises, and when the influent water overflows into the overflow pipeline 33, the detection device 5 sends a signal to the main control board, and the main control board judges that the filter screen is blocked.

The advantage of the solution in this embodiment is that when the filter screen is blocked, only part of the water will be lost due to overflow, and the entire water treatment system can continue to work to complete the current washing work. In this way, the washing machine program will not be suspended or terminated due to clogging of the filter screen. Even if the user is far away and cannot operate in time, the washing machine can still complete the washing process, avoiding poor user experience caused by the suspension or termination. After the washing work is completed or the next time it is used, the filter screen clogging alarm will be given on the operation interface, prompting the user to clean the filter screen.

Embodiment 2

As shown in FIG. 3 , in this embodiment, a float switch 52 is provided at the set height of the water inlet chamber 3 . The float switch is the detection device 5 . When the water level rises to the set height, the switch driven by the float closes. , and transmit the signal to the main control board, the main control board judges that the filter is blocked. After it is judged that the filter screen is blocked, continue to run the current washing work, and give a filter screen blockage alarm after the current washing work is completed or before the next washing starts, prompting the user to clean the filter screen.

Alternatively, two or more float switches 52 are set according to different heights, and the higher the height, the more serious the clogging of the filter screen. According to the degree of clogging of the filter, different treatment methods are made.

Embodiment 3

The difference between this embodiment and the first and second embodiments above is that the degree of filter clogging is determined according to the time taken from the water inlet of the water inlet chamber to the time it takes to determine the clogging of the filter screen. When the detection time is less than the set time, the processing is explained There are many impurities in the water, which will have a great impact on the blockage of the filter screen during filtration. In this case, the filter screen is judged to be severely blocked. At this time, the water circulation treatment is stopped. On the other hand, when the detection time is not less than the set time, it means that there are few impurities in the treated water, and the impurities in the water have little effect on the filter screen. , at this time, it is judged that the filter screen is slightly blocked, then continue to run this washing work, after the current washing work is completed, or before the next washing starts, the filter screen clogging alarm is given to remind the user to clean the filter screen.

Embodiment 4

As shown in FIG. 4 , in this embodiment, a water level detection device for collecting water level height information in real time is provided in the water inlet chamber 3 , which is similar to the water level detection device installed on the outer tub of the existing washing machine, including the air chamber 53 and the water level detection device. The sensor 54 judges the clogging degree of the filter screen according to the detected different water levels. The advantage of this method is that it can collect information on different clogging degrees of the filter screen, so that the main control board can make different responses according to different clogging degrees; at the same time, it can display different clogging degrees when prompting the user, or display it as a dynamic percentage or progress bar. In this way, the control methods are more diverse and the display is more intelligent.

Embodiment 5

As shown in FIG. 5 , in this embodiment, an opening is arranged on the side wall or bottom of the water inlet chamber 3 , and a pressure detection device 55 is arranged at the opening to judge the clogging degree of the filter screen according to the different water pressures detected.

The main control panel of the washing machine makes different response methods according to different clogging degrees; and prompts the user about the clogging degree in different prompting methods. Preferably, the prompting method is dynamic percentage or progress or color or sound.

Embodiment 6

As shown in Figures 4 and 5, the water inlet chamber 3 is also provided with a drain pipe 34, and the drain pipe 34 is provided with a drain valve 35. When the detection result is greater than the set value, the main control board sends a signal to the drain valve 35 is opened, the water in the water inlet chamber 3 is directly drained through the drain pipe 34 , and the water in the water outlet chamber 4 flows back to flush the filter screen 2 . In this way, when the filter screen is blocked to a certain extent, no filtration will be carried out, so as to prevent the filter screen from being blocked too seriously and being difficult to clean.

Embodiment 7

In this embodiment, different coping methods are made according to different clogging degrees:

When the detection result is higher than H1, it is judged to be slightly blocked, and the user is prompted to clean the filter screen after the end of the program;

When it is higher than H2, it is judged to be moderately blocked, and the user is prompted to clean the filter screen after the end of the program, and the cleaning prompt will be maintained during the next operation. The user can manually confirm that the filter screen has been cleaned before running the program normally;

When it reaches the height of H3, it is judged as a serious blockage, and there are two processing methods: a, suspend the program, alarm, clean the filter screen, continue washing, after the washing is over, alarm and clean the filter screen; b, interrupt the existing program, transfer to For the washing program without water treatment function, after the current washing is completed, after the washing is completed, the alarm will be alarmed and the filter screen will be cleaned; the cleaning alarm will be maintained in the next operation, and the program will run normally only after the user manually confirms that the filter screen has been cleaned. The washing program without the water treatment function is the existing normal washing. After each washing and rinsing is completed, the water is drained first, and then the water is fed to the set water level to perform the next step.

The above H1, H2, and H3 are the detected water level heights or pressure values corresponding to different water levels.

Further, when the degree of clogging of the filter screen jumps and changes during a washing cycle, a fault alarm is performed, and the water treatment module is faulty.

Embodiment 8

In the above embodiment, the washing machine does not have the automatic cleaning function of the filter screen. In this embodiment, the washing machine has the automatic cleaning function of the filter screen. When the filter screen is judged to be slightly or moderately blocked, there is no need to prompt the user after the program ends. Switch to the automatic filter cleaning program, and when it is judged that it is seriously blocked, it will directly transfer to the automatic filter cleaning program without alarming.

The water inlet chamber 3 and the water outlet chamber 4 in the water storage tank of the present invention are separated by the filter screen 2 to be arranged left and right, and can also be separated to be arranged up and down (see FIG. 6 ). The water inlet chamber 3 is arranged on the upper part, and the water outlet chamber 4 located in the lower part.

The embodiments in the above-mentioned embodiments can be further combined or replaced, and the embodiments are only to describe the preferred embodiments of the present invention, and not to limit the concept and scope of the present invention. Various changes and improvements made to the technical solutions of the present invention by professional and technical personnel all belong to the protection scope of the present invention.

Claims (9)

1. a kind of washing machine cycles water filters judgment of clogging processing method, which has water treating module, is used for Treatment of Washing Water after washing or rinsing in washing process to reuse；The water treating module includes water storage tank and in water storage tank Water storage tank inner space is divided into inflow and outflow two chambers by strainer, strainer, it is characterised in that: the water inlet chamber is set There are the detection device of sensed water level, the water level of detection device detection water inlet chamber, and will test signal and pass to master control borad, by leading Control plate judges the degree of filter net jam, and the working condition of water treating module or washing machine is controlled according to judging result, and/or Block information is passed to user；

When the result of detection is higher than H1, it is judged as slight blocking, prompts to clean strainer after user program；

When higher than H2, it is judged as that moderate blocks, prompts to clean strainer after user program, keep cleaning to mention when next time runs Show, user's manual confirmation could operate normally program after having cleaned strainer；

When reaching H3 height, be judged as Severe blockage, there are two types of processing modes: strainer is cleaned in a, time out program, alarm, continues Washing, after completed washings, strainer is cleaned in alarm；B interrupts existing program, is transferred to the washing procedure without treatment function, This washing is completed, after completed washings, strainer is cleaned in alarm；Cleaning alarm is kept when operation next time, user's manual confirmation is Program could be operated normally after cleaning strainer；

H1, H2, H3 are the height of water level or water inlet chamber difference water level corresponding pressure value of the water inlet chamber of detection.

2. a kind of washing machine cycles water according to claim 1 filters judgment of clogging processing method, it is characterised in that: in institute The height stated into water Chamber is equipped with switch, and when water level rises to setting height, what float drove is closed the switch, and Signal is passed to master control borad, master control borad is judged as filter net jam.

3. a kind of washing machine cycles water according to claim 1 filters judgment of clogging processing method, it is characterised in that: in institute The water-level detecting device for being equipped with acquisition height of water level information in real time in intake antrum room is stated, is judged according to the different heights of water level of detection The chocking-up degree of strainer.

4. a kind of washing machine cycles water according to claim 1 filters judgment of clogging processing method, it is characterised in that: in institute It states into the side wall of water chamber or bottom and one aperture is set, pressure-detecting device is arranged in tapping, according to the different water of detection Pressure judges the chocking-up degree of strainer.

5. a kind of washing machine cycles water according to claim 3 or 4 filters judgment of clogging processing method, it is characterised in that: The water inlet chamber is equipped with a drainpipe, and drainpipe is equipped with drain valve, when testing result is greater than the set value, master control borad hair Signal drain valve is opened out, and the water inlet for chamber of intaking directly is drained by drainpipe, is discharged the aqueous reflux reverse flushing filter screen of chamber.

6. a kind of washing machine cycles water according to claim 3 or 4 filters judgment of clogging processing method, it is characterised in that: Washing machine master control borad makes different coping styles according to different chocking-up degrees；And user is prompted with different prompting modes Chocking-up degree.

7. a kind of washing machine cycles water according to claim 6 filters judgment of clogging processing method, it is characterised in that: prompt Mode is dynamic percentage or progress or color or sound.

8. a kind of washing machine cycles water according to claim 1 filters judgment of clogging processing method, it is characterised in that: when one In a washing cycle, when detection filter net jam degree jump changes, fault alarm is carried out, water treating module breaks down.

9. a kind of washing machine cycles water according to claim 1 filters judgment of clogging processing method, it is characterised in that: laundry Machine has filter net jam automatic cleaning function, when judging that strainer is slight and moderate blocks, prompt is not needed after EP (end of program) and is used Family is directly transferred to automatic cleaning strainer program, when being judged as Severe blockage, without alarm, is directly transferred to automatic cleaning strainer Program, automatic strainer program of cleaning correspond to different chocking-up degrees, select varying strength and/or the filter gauze cleaning mode of time.