JP6718579B2 - How to drain a multi-drum washing machine - Google Patents

Description

The present invention relates to the field of washing machines, and more specifically, to a drainage method for a multiple drum washing machine.

Currently, most of the drum type washing machines on the market have only one washing drum. 2. Description of the Related Art As people have become more aware of hygiene, more and more users are washing different types of clothes separately or quickly washing small amounts of clothes.

As the quality of life of people has been improved, hygiene awareness has been gradually improved, and particularly in washing clothes at home, more and more people are washing clothes separately. It is difficult to meet the demand in terms of washing time when using the existing washing machine for several times of washing; if two or several washing machines are purchased and they are separately washed at the same time, energy and water resources Not only is it extremely wasteful, but it also occupies a large space, making it unsuitable for home use. Therefore, using a multi-drum washing machine can meet the above demands and solve the problem of wasting energy, water and space.

Chinese Patent No. 201010117002.0 discloses a method of controlling a washing machine, wherein the washing machine includes a first washing tub and a second washing tub. The method receives a first operation command requesting to execute a water supply program or a drainage program in the first washing tub; whether the same operation command is executed in the second washing tub Determining that the first operation command cannot be executed when the same operation command is being executed in the second washing tub; requesting the water supply program or the drainage program Determining which of the first washing tub and the second washing tub has a shorter remaining washing time when the same operation command is simultaneously input to the first washing tub and the second washing tub. And; preferentially executing the water supply program or the drainage program in a washing tub having a shorter remaining washing time.

The requirement for vibration is higher due to the relatively high center of gravity of the double-drum washing machine and its instability. The larger the total mass of the washing machine, the smaller its vibration. When a plurality of drainage pumps or a plurality of washing machines are installed and drained at the same time, a drum having a high center of gravity generates relatively large vibration and noise, which causes unnecessary troubles in daily life. Furthermore, in order to guarantee the life of the washing machine, it is necessary to ensure that the washing water in the washing machine can be completely drained.

With this in mind, the present invention will be described.

Chinese Patent No. 201010117002.0

It is an object of the present invention to overcome the shortcomings of the existing technology and provide a drainage method for a multi-drum washing machine. The multi-drum washing machine is provided with a plurality of washing devices and one drain pump that communicates with the outside, and by determining a program, each washing device is controlled to sequentially drain, thereby reducing vibration of the washing machine. It was Furthermore, by controlling and judging the operation sequence of the drainage pump, the washing water in the multi-drum washing machine was thoroughly discharged, and the life of the washing machine was extended.

In order to achieve the object, the present invention adopts the following technical solutions. In the drainage method of a multi-drum washing machine, the multi-drum washing machine includes at least two washing devices and one drain pump communicating with the outside, and drain valves are provided between the washing devices and the drain pumps. Each of the washing devices of the multi-drum washing machine sequentially drains water, and when drainage of the washing device is completed, the drain valve of the washing device is closed and then the drainage pump is stopped.
Check if there is any other washing device that needs to be drained, and if there is, open the drain valve of the washing device that needs to drain then start the drain pump to drain the washing device, If not, draining of the multi-drum washing machine is complete.

Further, it is necessary to determine whether or not the drainage pump is operating after the drainage of the washing machine is completed. If not, the drain pump continues to perform the sequence of operations again and then determines again; if it is running, then determines how long the drain pump has been running.

Further, the drain pump operating sequence is a single cycle sequence in which the drain pump performs a complete operating process and a shut down process. If the time of the operation process is set to T1 and the stop time is set to T2, the total time of the operation sequence of the drainage pump is T3=T1+T2.

Further, when the operating time of the drainage pump is in the first third of the total time of the operating process, the drainage valve of the washing machine is closed.
If not, the drain pump completes the operating sequence and then executes the operating sequence again, and then determines whether the drain pump is operating.

Further, when the drainage program of the washing machine is started, it is determined whether or not there is another washing machine that performs the drainage process. If so, wait until the other laundry equipment has drained, then launch the drain program; if not, launch the drain program directly.

Further, when the drainage of the washing machine is completed, the drainage valve of the washing machine is closed, and then it is determined whether or not the drainage pump is stopped. If not stopped, the drainage pump runs until it completes the sequence of operations and then makes another decision; if stopped, open the drainage valve of the other washing machine or Drain the drum washing machine.

Further, after the set waiting time T4 has elapsed after the drainage pump of the washing machine is activated, the drainage pump is activated to drain the laundry.

Further, the waiting time T4 is set on the basis of related parameters such as the drainage speed of the multi-drum washing machine, the length of the pipeline from the drain valve to the drainage pump, and preferably the waiting time is 3s≦T4≦6s. Is.

Furthermore, in the process of draining the washing machine, it is necessary to judge whether the draining of the washing machine is completed. If the drainage is finished, determine if the drainage pump is working, and if not, the drainage pump will continue to drain.

Adopting the above technical solution of the present invention brings the following beneficial effects.
First, the present invention adds a judgment process of sequentially draining, reasonably adjusts the operation process of a plurality of washing drums, and maximizes the damping effect. When one washing drum of the washing machine of the present invention reaches the drainage program, the other washing drum is draining, or if draining within a certain time, the first washing drum drains first. Without, increase the weight of the washing machine. When the second washing drum drains, it exerts an action of increasing the counterweight and realizes a damping effect.

2. The washing machine of the present invention includes at least two washing machines and one drainage pump communicating with the outside, and a drainage valve is provided between each washing machine and the drainage pump. The drainage effect of the washing machine is enhanced, the installation space of the washing machine is simplified, and the cost is reduced.

3. The present invention determines the process of the drainage pump operating sequence. After the washing machine has been drained, if the drainage pump is operating and before some set time in the time of the operating process, the drainage pump will stop the draining pump when it completes the operating sequence. If this is not the case, the drain pump completes the operating sequence and then executes the operating sequence one more time and then stops the drain pump. It further guarantees that the drainage pump discharges all the water in the washing machine, prevents the washing water from being accumulated between the parts of the washing machine, and prolongs the service life of the washing machine.

Hereinafter, a mode for carrying out the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a structural diagram of a multi-drum washing machine of the present invention. FIG. 2 is a drainage structure diagram of the multi-drum washing machine of the present invention. FIG. 3 is a drainage structure diagram of a multi-drum washing machine according to another embodiment of the present invention. FIG. 4 is a flowchart of the control method of the present invention. FIG. 5 is a flowchart of the control method in another embodiment of the present invention. FIG. 6 is a flowchart of the control method in another embodiment of the present invention. FIG. 7 is a flow chart of a control method in another embodiment of the present invention.

In order to more clearly and easily understand the above objects, features and advantages of the present invention, the present invention will be described in more detail below in combination with the drawings and modes for carrying out the invention.

Example 1
As shown in FIG. 1, a plurality of washing machines are provided in the multi-drum washing machine, and each independent washing machine independently takes a water intake program, a laundry program, a drainage program, a dehydration program, and a rinse program for clothes. You can run programs, drainage programs, dehydration programs and achieve the purpose of washing clothes. The multi-drum washing machine of this embodiment has a double-drum washing machine structure, and the washing devices are a first washing drum 1 and a second washing drum 2, respectively. The 1st washing drum 1 and the 2nd washing drum 2 can respectively independently execute a suitable program for clothes. A drying device may be added to each of the first washing drum and the second washing drum so that the drying program is executed after the dehydration program to dry the clothes in the first washing drum and/or the second washing drum. To achieve the purpose. Preferably, the washing machine can also heat-treat the washing water, the first heating device for heating the washing water in the first washing drum is provided, and the washing water in the second washing drum is heated. A second heating device is provided. Accordingly, in the process of executing the washing program, the washing water in the corresponding washing drum is heat-treated to control the water temperature in the washing process of the clothes and enhance the washing effect.

In the present invention, the first washing drum communicates with the second washing drum, and when the water of the first washing drum meets a certain condition, it can be discharged to the second washing drum for repeated use. If the water of the above condition satisfies a certain condition, it can be discharged to the first washing drum and reused. If the condition of repeated use is not satisfied, the water is discharged directly from the drain pipe. Increase water utilization rate, prevent waste of water source, and add control process to ensure reusable water only when it is relatively clean, and ensure washing effect.

Example 2
As shown in FIGS. 2 and 3, the multi-drum washing machine according to the present embodiment has a double-drum washing machine structure, and the double-drum washing machine has two washing devices, a first washing device and a second washing device, respectively. It is a washing machine. When the multi-drum washing machine is a double-drum washing machine, the washing device is a washing drum. The bottoms of the first washing device and the second washing device are respectively connected to drainage pipes, and the other ends of the two drainage pipes are respectively connected to drainage mains communicating with the outside. A drain valve is provided in the middle of the drain pipe, the first washing device is connected to the drain valve A, the second washing device is connected to the drain valve B, and a drain pump P is provided to the drain main pipe. The washing water of the first washing drum and the second washing drum of the multi-drum washing machine flows through the drainage pipe and the drainage main of the washing drum and is discharged to the outside. In order to ensure that all the washing water in the drain line of the washing machine can be discharged to the outside, the drainage pump adopts a large number of operation sequences set, and the washing water remaining inside the drain pipe and the washing machine is adopted. Guarantee that both are discharged. In this embodiment, the drain valve A, the drain valve B, and the drain pump are all connected to the control chip of the washing machine, and the control chip of the washing machine controls the washing drums so that the washing drums sequentially drain the washing machine. Reduced vibration and noise. The drainage structure of the multi-drum washing machine can increase the drainage efficiency of the plurality of washing drums in the multi-drum washing machine, simplify the installation space inside the washing machine, and further reduce the production cost of the washing machine.

In the present embodiment, the drain main is installed in the middle or bottom of the washing machine according to various usage environments to further guarantee the convenience of use by the user.

Example 3
As shown in FIG. 4, in the drainage method of the multi-drum washing machine of the present embodiment, the multi-drum washing machine includes at least two washing devices and one drain pump communicating with the outside, and each washing device and drainage A drain valve is provided between the pump and the pump. Each of the washing devices of the multi-drum washing machine sequentially drains water, and when drainage of the washing device is completed, the drain valve of the washing device is closed and then the drainage pump is stopped.
Check if there is any other washing device that needs to be drained, and if there is, open the drain valve of the washing device that needs to drain then start the drain pump to drain the washing device, If not, draining of the multi-drum washing machine is complete. When one washing machine is draining water, when the other washing drums wait for the draining process, water and clothes in the other washing drums act as counter weights to increase the weight of the washing machine. Can be realized and the effect of damping is realized. Especially, when the washing machine is in the drainage process of the dehydration process, the damping effect is the best.

After the drain of the washing machine is completed, it is necessary to determine whether the drain pump is operating. If not, the drain pump continues to execute the operating sequence again and then determines again; if it is running, then it determines the amount of time the drain pump has been running. The inside of the washing drum measures the water level, or the control chip calculates the amount of water intake and the amount of drainage to determine whether or not the inside of the washing drum is drained. However, some of the washing water or the washing water that has not been discharged into the drain pipe remains in the washing machine of the washing machine. By determining the stage of the operation sequence of the drainage pump, after confirming that the washing water has been drained in the multi-drum washing machine until empty, ensure that the drainage pump will continue to drain for the set time, Achieves the effect of thoroughly draining the washing water in the multi-drum washing machine.

The operation sequence of the drainage pump is a single cycle order in which the drainage pump performs a complete operation process and a stop process, and when the time of the operation process is set to T1 and the stop time is set to T2, the drainage pump is The total time of the operation sequence of is T3=T1+T2. The operation sequence of the drainage pump to which it belongs includes an operation process and a stop process, in which the multi-drum washing machine can collect a certain amount of wash water, after which the drainage pump starts draining the wash water, It is possible to reduce idle running. It extends the service life of the drainage pump and further reduces the excessive noise of the washing machine caused by the idle operation of the drainage pump, which affects the satisfaction of the user's use.

If the operating time of the drainage pump is in the first third of the total time of the operating process, the draining valve of the washing machine is closed.
If not, the drain pump completes the operation sequence and then executes the operation sequence again, and then determines again whether the drain pump is operating. When the water in the washing machine is judged to have been completely drained, the drainage pump is in the last stage of the operating time and still because the time of the stop process and the operating process in the operating sequence of the drainage pump are both relatively short. It is not possible to reliably guarantee that the wash water remaining in the drain line or the washing machine has been completely drained. To further guarantee that all the wash water has been drained, after the drain of the washing machine is finished, it is guaranteed that the drainage pump operating time is longer than 2/3 of the total time of the drainage pump operating process. Can be achieved to be completely discharged.

When the drainage program of the washing machine is started, it is determined whether there is another washing machine performing the drainage process. If so, wait until the other laundry equipment has drained, then launch the drain program; if not, launch the drain program directly. It is possible to realize the drainage of the washing machines of the multi-drum washing machine in sequence, to ensure that the washing machines of the multi-drum washing machine do not drain simultaneously, and to achieve the drainage efficiency of the multi-drum washing machine. ..

When the drainage of the washing machine is completed, the drainage valve of the washing machine is closed, and then it is determined whether or not the drainage pump is stopped. If the operation is not stopped, the drainage pump executes the operation sequence until it finishes, and then makes a decision again. If it is not working, open the drain valve of the other washing machine or end the drain of the multi-drum washing machine. It is further ensured that the washing water in the drainage pipe is completely discharged, and a large amount of washing water accumulates in the drainage pipe and becomes a burden due to the load of the drainage pipe. It prevents bacteria from propagating and contaminating the cleanliness of the inside of the washing machine as well as the cleanliness of clothes, improving the cleanliness of use of the washing machine and prolonging its service life.

After the drainage pump of the washing machine is started, the set waiting time T4 elapses, and then the drainage pump is started to drain the laundry machine.

The waiting time T4 is set on the basis of related parameters such as the drainage speed of the multi-drum washing machine, the length of the pipeline from the drain valve to the drainage pump, and preferably the waiting time is 3s≦T4≦6s. .. In the washing machine, after the drain valve is opened, the wash water cannot reach the position of the drain pump in an instant, so the washing water waits for a set time and the drain starts when the wash water reaches the drain pump. Preventing loud noise caused by idle operation of the drainage pump, and guaranteeing the service life of the drainage pump.

In the process of draining the washing machine, it is necessary to judge whether the draining of the washing machine is completed. If the drainage is finished, determine if the drainage pump is working, and if not, the drainage pump will continue to drain.

As shown in FIG. 4, the multi-drum washing machine is a double-drum washing machine in this embodiment, and the washing devices of the double-drum washing machine are a first washing drum and a second washing drum, respectively. There is no difference between the first washing drum and the second washing drum, only for distinguishing a plurality of washing machines included in the washing machine. The drainage method of the multi-drum washing machine of this embodiment is as follows.
1) The first washing drum reaches the drainage program.
2) Determine whether the second washing drum is in the draining operation, and if it is in the draining operation, execute step 3); otherwise, execute step 9).
3) The second washing drum drains, and the first washing drum waits for draining.
4) It is determined whether the drainage of the second washing drum is finished, and if it is finished, step 5) is executed; otherwise, step 3) is executed.
5) Determine if the drainage pump is running, and if so, perform step 6); if not, the drainage pump performs the operating sequence again and then performs step 5).
6) Determine if the operating time of the drainage pump is before the T5 time in the operating process, and if so, perform step 7); otherwise, the drainage pump has completed the operating sequence. Then, the operation sequence is executed again, and then step 5) is executed.
7) Stop the drainage pump of the second washing drum.
8) Determine if the drainage pump has stopped working, and if it does, perform step 9); otherwise, the drainage pump completes the sequence of operations before performing step 8). To do.
9) Open the drain valve of the first washing drum.
10) Wait for the set time T4.
11) Start the drainage pump, the drainage pump executes the set operation sequence, and starts draining the first washing drum.
12) It is determined whether the drainage of the first washing drum is completed, and if it is completed, step 13) is executed; otherwise, step 11) is executed.
13) Determine if the drainage pump is operating and if so, perform step 14); if not, the drainage pump performs the sequence of operations again and then performs step 13).
14) Determine if the drainage pump operating time is within the first third of the total time of the operating process, and if so, perform step 15); otherwise drainage The pump completes the operating sequence, then executes the operating sequence again, and then executes step 13).
15) Close the drain valve of the first washing drum.
16) Determine if the drainage pump has stopped working, and if it does, perform step 17); otherwise, the drainage pump completes the sequence of operations before performing step 17). To do.
17) The drainage of the first washing drum is completed.

As to whether the operation time of the drainage pump in the step 6) is before T5 time in the operation process, the T5 time point is 1/3 time point of the operation process. Therefore, it is determined whether the operation time of the drainage pump is before the T5 time point of the operation process by determining whether the operation time of the drainage pump is within 1/3 of the total time of the operation process. That is.

As shown in FIG. 5, one implementation of this embodiment needs to determine whether the first washing drum is draining when the second washing drum reaches the drainage program. The steps of the drainage method are as follows.
1) The second washing drum reaches the drainage program.
2) Determine whether the first washing drum is in the draining operation, and if it is in the draining operation, execute step 3); otherwise, execute step 9).
3) The first washing drum drains, and the second washing drum waits for draining.
4) It is determined whether the drainage of the first washing drum is finished, and if it is finished, step 5) is executed; otherwise, step 3) is executed.
5) Determine if the drainage pump is running, and if so, perform step 6); if not, the drainage pump performs the operating sequence again and then performs step 5).
6) Determine if the drain pump operating time is before the T5 time in the operating process, and if so, perform step 7); otherwise, the drain pump completes the operating sequence. Then, the operation sequence is executed again, and then step 5) is executed.
7) Stop the drainage pump of the first washing drum.
8) Determine if the drainage pump has stopped working, and if it does, perform step 9); otherwise, the drainage pump completes the sequence of operations before performing step 8). To do.
9) Open the drain valve of the second washing drum.
10) Wait for the set time T4.
11) Start the drain pump, the drain pump executes the set operation sequence, and starts draining the second washing drum.
12) It is determined whether the drainage of the second washing drum is finished, and if it is finished, step 13) is performed; otherwise, step 11) is performed.
13) Determine if the drainage pump is running, and if it is, perform step 14); otherwise, the drainage pump performs the sequence of operations again and then performs step 13).
14) Determine if the drainage pump operating time is within the first third of the total time of the operating process, and if so, perform step 15); otherwise drainage The pump completes the operating sequence, then executes the operating sequence again, and then executes step 13).
15) Close the drain valve of the second washing drum.
16) Determine if the drainage pump has stopped working, and if it does, perform step 17); otherwise, the drainage pump completes the sequence of operations before performing step 17). To do.
17) The drainage of the second washing drum is completed.

Example 4
In this embodiment, the water in the washing drum of the multi-drum washing machine is repeatedly used. When it is determined that the first washing drum waits for the completion of the dehydration of the second washing drum, it is determined whether the water needs to be taken after the drainage of the second washing drum is completed. When it is not necessary to take water, the water of the first washing drum is directly discharged, and when it is necessary to take water, it is determined whether the water of the first washing drum can be repeatedly used. If it can be reused repeatedly, the water of the first washing drum is discharged to the second washing drum.

When the first washing drum reaches the drainage program, if the second washing drum is drawing water, it is determined whether the water of the first washing drum can be repeatedly used. If it can be reused repeatedly, the water of the first washing drum is discharged to the second washing drum.

When the first washing drum is drained and is in a washing state, when the second washing drum is taking water and is in a rinsing state, or when the first washing drum is draining and the second washing drum is taking water, both are in a washing state. , The first washing drum is washed less frequently than the second washing drum, or both the first washing drum is drained and the second washing drum is water-intake, and the first washing drum is rinsed. If the number of rinses is less than the number of rinses of the second washing drum or the turbidity of the water of the first washing drum exceeds the set value, the water of the first washing drum cannot be reused.

When determining whether the water in the first washing drum can be reused, the turbidity value or the foam concentration value of the water in the first washing drum is measured. If the turbidity value or the foam concentration value is smaller than the set value, the water in the first washing drum can be reused, otherwise the water in the first washing drum cannot be reused and the water can be directly used. Discharge.

When the first wash drum reaches the drain program, it is determined whether the second wash drum is or is about to run the last rinse intake. If this is the case, the water of the first washing drum is directly discharged, and if not, it is determined whether the water of the first washing drum can be repeatedly used.

When the first wash drum reaches the drain program, it is determined whether the first wash drum is the drain of the last rinse. If this is the last rinse drain, the water in the first wash drum is drained directly. If not the last rinse drain, determine if the water in the first wash drum can be reused. The last rinse may add softeners or disinfectants, etc., but the second washing drum may not need this process, thus preventing it from affecting clothing in the second washing drum. To do. If this is the last rinse drain, the water in the first wash drum is drained directly.

The first washing drum and the second washing drum are merely numbered for convenience of explanation. It is also possible to determine whether or not the first washing drum is draining at this time when the second washing drum is draining, without assigning the order relation. When draining, the 2nd washing drum waits for completion of drainage of the 1st washing drum, and drains it. The water in the second washing drum acts as a counterweight, which can increase the weight of the washing machine and realize a damping effect.

In this embodiment, when the washing tub of the multi-drum washing machine is in the dehydration process, a relatively large vibration is generated in the washing machine during the dehydration process. Therefore, in order to better achieve the damping effect, if the first washing drum is not draining or dehydrating at this time, the second washing drum waits for the completion of the dehydration of the first washing drum and determines whether to drain it. .. In a situation where the second washing drum has just completed draining and the first washing drum immediately starts dehydration, it is possible to prevent the water of the second washing drum from exerting a damping effect and being wasted. can do.

As shown in FIG. 6, another drainage method of the multi-drum washing machine in this embodiment is as follows.
1) The first washing drum reaches the drainage program.
2) Determine whether the second washing drum is in the draining operation, and if it is in the draining operation, execute step 3); otherwise, execute step 12).
3) The second washing drum drains, and the first washing drum waits for draining.
4) It is determined whether the drainage of the second washing drum is finished, and if it is finished, step 5) is executed; otherwise, step 4) is executed.
5) Determine if the drainage pump is running, and if so, perform step 6); if not, the drainage pump performs the operating sequence again and then performs step 5).
6) Determine if the drain pump operating time is before the T5 time in the operating process, and if so, perform step 7); otherwise, the drain pump completes the operating sequence. Then, the operation sequence is executed again, and then step 5) is executed.
7) Stop the drainage pump of the second washing drum.
8) Determine if the drainage pump has stopped working, and if it does, perform step 9); otherwise, the drainage pump completes the sequence of operations before performing step 8). To do.
9) The first washing drum prepares drainage.
10) Determine whether the second washing drum draws water, and if so, perform step 11); otherwise, perform step 12).
11) Determining whether the water of the first washing drum can be reused and, if it can be reused, drain the water of the first washing drum into the second washing drum; Execute 12).
12) Drain the water in the first washing drum from the washing machine.

Example 5
In the control method for repeatedly using water of the multi-drum washing machine according to the present embodiment, the multi-drum washing machine includes at least a first washing drum and a second washing drum. When the first washing drum and the second washing drum are in the operating state at the same time, when the first washing drum reaches the drainage program, the time T12 when the second washing drum reaches the water intake program, and the first washing drum starts the next drainage program. The time T11 is reached. When T12<T11, the first washing drum waits for water to be taken from the second washing drum, and when T12≧T11, the first washing drum directly drains water.

Before comparing the time T12 when the second washing drum reaches the water intake program with the time T11 when the first washing drum reaches the next drainage program, it is judged whether the water of the first washing drum can be repeatedly used. To do. If it cannot be repeatedly used, the water in the first washing drum is directly discharged, and if it can be repeatedly used, the time T12 for the second washing drum to reach the water intake program and the first washing drum for the next drainage program. Compare with the reaching time T11.
Alternatively, when the first washing drum waits for the water of the second washing drum, it is determined whether the water of the first washing drum can be repeatedly used. When it cannot be repeatedly used, the water of the first washing drum is directly discharged, and when it can be repeatedly used, the water of the first washing drum is discharged to the second washing drum and the water is repeatedly used.

As shown in FIG. 7, in the present embodiment, the waiting time for water intake is adopted as a criterion to judge whether or not the water is repeatedly used. Based on the waiting time for water intake, when the water intake program is reached, wait for another drum to drain and determine if it will be used repeatedly. It has a simple judgment and control logic, and the stability of the control is relatively high in the actual washing program. Further, it is possible to sufficiently reuse water, which has a high practical value and can be widely applied more effectively.

The control method for repeatedly using water when the first washing drum and the second washing drum are simultaneously in operation is as follows.
In a control method of repeatedly using water of a multi-drum washing machine, the multi-drum washing machine includes at least a first washing drum and a second washing drum. The control method of repeatedly using water when the first washing drum and the second washing drum are simultaneously in operation is as follows. When the first washing drum reaches the water intake program, the time T22 when the second washing drum reaches the drainage program is compared with the time T21 when the first washing drum reaches the next water intake program. When T22≧T21, the first washing drum directly takes in clean water, and when T22<T21, the first washing drum waits for drainage of the second washing drum.

Before comparing the time T22 when the second washing drum reaches the drainage program with the time T21 when the first washing drum reaches the next water intake program, it is judged whether the water of the second washing drum can be repeatedly used. To do. If it cannot be repeatedly used, the first washing drum directly takes in clean water, and if it can be repeatedly used, the time T22 when the second washing drum reaches the drainage program, and the first washing drum receives the next water intake program. The time T21 is reached. Alternatively, when the first washing drum waits for the drain of the second washing drum, it is determined whether the water of the second washing drum can be repeatedly used. When it cannot be repeatedly used, the first washing drum directly takes clean water, and when it can be repeatedly used, the water of the second washing drum is discharged to the first washing drum and repeatedly used.

Specifically, it is the next step. Step 1: When the first washing drum reaches the water intake program, the time T22 when the second washing drum reaches the drainage program is compared with the time T21 when the first washing drum reaches the next water intake program. When T22≧T21, the first washing drum directly takes in clean water, and when T22<T21, the first washing drum waits for the drainage of the second washing drum, and executes step 2.
Step 2: It is judged whether the water of the second washing drum can be repeatedly used, and if it can be repeatedly used, the water of the second washing drum is discharged to the first washing drum and repeatedly used, and then repeated. If it is not available, the first washing drum draws clean water directly. The process of determining whether to wait or not is added, the probability of repeatedly using the water in the second washing drum is significantly increased, and more water can be repeatedly used.

In step 1, when the first washing drum reaches the water intake program, if the second washing drum is draining, the time T22 for the second washing drum to reach the drainage program is 0, there is no need to wait, and there is no direct process. Execute 2. Before comparing the time T22 when the second washing drum reaches the drainage program with the time T21 when the first washing drum reaches the next water intake program, whether the second washing drum is currently executing the drainage program at this time. You can also judge. When the second washing drum is not executing the drainage program, the time T22 when the second washing drum reaches the drainage program is compared with the time T21 when the first washing drum reaches the next water intake program.

In step 1, the allowable waiting time T20 (T20<T21) is set. If T22<T20, the first washing drum waits for the drainage of the second washing drum to execute step 2, and if T22≧T20, the first washing drum directly takes in clean water. The process can prevent the waiting time of the first washing drum from being excessively long, and reasonably adjust the repeated use of water on the assumption that the washing time of the first washing drum is guaranteed. It does not waste a lot of time on the first washing drum because it only considers the repeated use of water. When the washing machine determines that the waiting time is excessively long and exceeds the set allowable waiting time, the first washing drum does not repeatedly use the water of the second washing drum. The judgment made water reuse more rational and adjusted the relationship between waiting time and water reuse maximally.

In step 2, the turbidity value or the foam concentration value of the water in the second washing drum is measured. If the turbidity value or the foam concentration value is smaller than the set value, the water in the second washing drum can be reused, otherwise the water in the second washing drum cannot be reused. The water can be reused only when the turbidity value or the foam concentration value of the water is within the set range.

In step 2, it is determined whether the second wash drum is the last rinse drainage. In the case of the final rinse drainage, the water of the second washing drum drains directly and the first washing drum draws clean water directly. If not the last rinse drain, determine if the water in the second wash drum can be reused. The final rinse may add softeners or disinfectants, etc., but the first washing drum may not need this process, thus affecting clothing in the first washing drum. To prevent. If the second washing drum is the last rinse drainage, the water of the second washing drum will drain directly and the first washing drum will take in clean water directly.

In step 1, when the first wash drum reaches the intake program, it is determined whether the starting intake program is the final rinse intake. If so, the first washing drum draws clean water directly, otherwise, the second washing drum continues to the time T22 when it reaches its drainage program and the time T21 when the first washing drum reaches its next water intake program. Compare. The final rinse water intake ensures that clean water is taken in and the effect after the clothes have been washed.

In step 2, when the water of the second washing drum is discharged to the first washing drum, it is determined whether the first washing drum executes the washing water intake program. When executing the washing water intake program, the first washing drum first takes in the water for rinsing the detergent case, and after the washing water for rinsing the detergent case in the first washing drum is completed, the water in the second washing drum is removed. To discharge. When the water intake program for washing is not executed, the water in the second washing drum is directly discharged to the first washing drum.

In step 2, when the water of the second washing drum is discharged to the first washing drum, the height of the water level in the first washing drum is measured. When the water level in the first washing drum reaches the set water level value, if there is still water in the second washing drum, the remaining water in the second washing drum is directly discharged. Even if all the water in the second washing drum is discharged into the first washing drum, if the water level in the first washing drum does not reach the set water level value, the first washing drum takes in clean water.

When the water of the second washing drum is directly discharged, it is determined whether the first washing drum is currently executing the drainage or dewatering program. When executing the drainage or dehydration program, the second washing drum waits for the completion of the dehydration of the first washing drum before draining. Otherwise, the allowable waiting time T40 is set with T41 being the time until the first washing drum drains, T42 the draining time required for the first washing drum, and T43 the draining time required for the first washing drum. If T41+T42+T43<T40, the second washing drum waits for the completion of the dehydration of the first washing drum and drains it, otherwise drains the water of the second washing drum directly.

It is also possible to determine whether the water in the first washing drum can be repeatedly used by determining the washing state and the number of washings. In step 2, when the second washing drum is drained, in a washing state, when the first washing drum is drawing water, in the rinsing state, or when the second washing drum is draining water and the first washing drum is drawing water. In the washing state, the number of washings of the second washing drum is less than the number of washings of the first washing drum, or both of the draining of the second washing drum and the intake of water of the first washing drum are in the rinsing state. If the rinsing frequency of the washing drum is less than the rinsing frequency of the first washing drum, the water of the first washing drum cannot be reused.

When the second washing drum reaches the water intake program, the time for the first washing drum to reach the drainage program and the time for the second washing drum to reach the next water intake program are compared, and the second washing drum indicates the first washing drum. Decide whether to wait for the drainage of.

The drain of the second washing drum is connected to the first washing drum, and the water in the second washing drum can be discharged to the first washing drum for repeated use. A water shutoff valve is provided at the drain of the second washing drum, water from the second washing drum can enter the first washing drum through the water shutoff valve, and an intake valve is provided at the first washing drum. The clean outside water can enter the first washing drum through the intake valve. The control method is as follows.
1) The first washing drum reaches the intake program.
2) It is determined whether or not the water in the second washing drum is repeatedly used, and if it is repeatedly used, step 3) is executed, and if not, step 6) is executed.
3) The time until the first washing drum executes the next water intake program is T21, and the time until the second washing drum executes the drainage program is T22. If T22<T21, step 4) is executed, and if T22≧T21, step 6) is executed.
4) The first washing drum waits for the drainage of the second washing drum and executes step 5).
5) Drain the water in the second washing drum to the first washing drum.
6) The first washing drum directly draws clean water and the second washing drum directly discharges water.

The control method determines whether the second washing drum is draining before comparing the time T22 when the second washing drum reaches the drainage program and the time T21 when the first washing drum reaches the next water intake program. It is possible to add a process to do. The control method is as follows.
1) The first washing drum reaches the intake program.
2) It is determined whether the water in the second washing drum is repeatedly used, and if it is repeatedly used, step 3) is executed, and if not, step 7) is executed.
3) It is judged whether the second washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 6) is executed. Execute.
4) The time until the first washing drum executes the next water intake program is T21, and the time until the second washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 7) is executed.
5) The first washing drum waits for the drainage of the second washing drum and executes step 6).
6) Drain the water in the second washing drum to the first washing drum.
7) The first washing drum directly draws clean water and the second washing drum directly discharges water.

The control method may also include determining whether the first washing drum has sufficient time to wait for drainage of the second washing drum. The control method is as follows.
1) The first washing drum reaches the intake program.
2) It is determined whether the water in the second washing drum is repeatedly used, and if it is repeatedly used, step 3) is executed, and if not, step 8) is executed.
3) It is determined whether the second washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 7) is executed. Execute.
4) The time until the first washing drum executes the next water intake program is T21, and the time until the second washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 8) is executed.
5) Set the allowable waiting time T20, execute step 6) if T22<T20, and execute step 8) if T22≧T20.
6) The first washing drum waits for the drainage of the second washing drum and executes step 7).
7) Drain the water in the second washing drum to the first washing drum.
8) The first washing drum directly draws clean water and the second washing drum directly discharges water.

If the water in the second washing drum is dirty, it cannot be used repeatedly. Or even if the first washing drum is the last rinse water intake, it cannot be used repeatedly. The control method is as follows.
1) The first washing drum reaches the intake program.
2) Determine if the first wash drum only leaves the last rinse of water; if not, perform step 3); if yes, perform step 9).
3) It is determined whether the second washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 7) is executed. Execute.
4) The time until the first washing drum executes the next water intake program is T21, and the time until the second washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 9) is executed.
5) Set the allowable waiting time T20, execute step 6) if T22<T20, and execute step 9) if T22≧T20.
6) The first washing drum waits for the drainage of the second washing drum and executes step 7).
7) Measure the turbidity value or the foam concentration value of the water in the second washing drum to determine whether the turbidity value or the foam concentration value is smaller than the set value.
If it is smaller than the set value, step 8) is executed, and if not, step 9) is executed. It is determined whether the second washing drum is the drainage of the last rinse, and if it is not the drainage of the last rinse, step 8) is executed, and if it is the drainage of the last rinse, step 9) is executed.
8) Drain the water in the second washing drum to the first washing drum.
9) The first washing drum directly takes in clean water and the second washing drum directly discharges water.

When the water of the second washing drum is discharged to the first washing drum, if the first washing drum is the intake of washing, it is necessary to wash away the detergent case and to measure the water level. The control method is as follows.
1) The first washing drum reaches the intake program.
2) Determine if the first wash drum only leaves the last rinse of water, if not, perform step 3), if yes, perform step 12).
3) It is determined whether the second washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 7) is executed. Execute.
4) The time until the first washing drum executes the next water intake program is T21, and the time until the second washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 12) is executed.
5) Set the allowable waiting time T20, execute step 6) if T22<T20, and execute step 12) if T22≧T20.
6) The first washing drum waits for the drainage of the second washing drum and executes step 7).
7) Measure the turbidity value or the foam concentration value of the water in the second washing drum to determine whether the turbidity value or the foam concentration value is smaller than the set value.
If it is smaller than the set value, step 8) is executed, otherwise step 12) is executed.
8) It is determined whether the first washing drum executes the washing water intake program, and if the washing water intake program is executed, step 9) is executed, and otherwise step 10) is executed.
9) The first washing drum first takes in water to wash out the detergent case, and after the washing water to wash out the detergent case from the first washing drum is finished, step 10) is executed.
10) Drain the water in the second washing drum to the first washing drum.
11) The water level in the first washing drum is measured, and when the water level in the first washing drum reaches the set water level value, if there is still water in the second washing drum, the remaining water is directly discharged. To do. Even if all the water in the second washing drum is discharged into the first washing drum, if the water level in the first washing drum does not reach the set water level value, water is taken from the external water intake port to the first washing drum.
12) The first washing drum directly draws clean water and the second washing drum directly discharges water.

The first washing drum and the second washing drum in this embodiment are merely numbers added for convenience of explanation. It is also possible to reuse the water of the first washing drum without assigning an order relation. The intake port of the second washing drum is connected to the drain port of the first washing drum, and the water in the first washing drum can be discharged to the second washing drum for repeated use. A water shutoff valve is provided at the drain port of the first washing drum, water from the first washing drum can enter the second washing drum through the water shutoff valve, and a water intake valve is provided at the second washing drum. The external clean water can enter the second washing drum through the intake valve. When it is determined whether one washing drum reaches the water intake and the water in the other washing drum is drained to the washing drum to be repeatedly used, even if the other washing drum reaches the water intake, Do not consider the repeated use of water. Waiting for both drums to prevent a closed loop.

The control method is as follows.
1) The second washing drum reaches the intake program.
2) It is determined whether the water in the first washing drum is repeatedly used, and if it is repeatedly used, step 3) is executed, and if not, step 6) is executed.
3) The time until the second washing drum executes the next water intake program is T21, and the time until the first washing drum executes the drainage program is T22. If T22<T21, step 4) is executed, and if T22≧T21, step 6) is executed.
4) The second washing drum waits for the drainage of the first washing drum and executes step 5).
5) Drain the water in the first washing drum to the second washing drum.
6) The second washing drum directly takes in clean water and the first washing drum directly discharges water.

The control method determines whether the first washing drum is draining before comparing the time T22 when the second washing drum reaches the drainage program and the time T21 when the first washing drum reaches the next water intake program. It is possible to add a process to do. The control method is as follows.
1) The second washing drum reaches the intake program.
2) It is determined whether the water in the first washing drum is repeatedly used, and if it is repeatedly used, step 3) is performed, and if not, step 7) is performed.
3) It is determined whether the first washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 6) is executed. Execute.
4) The time until the second washing drum executes the next water intake program is T21, and the time until the first washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 7) is executed.
5) The second washing drum waits for drainage of the first washing drum and performs step 6).
6) Drain the water in the first washing drum to the second washing drum.
7) The second washing drum directly draws clean water and the first washing drum directly discharges water.

The control method may also include determining whether the second washing drum has sufficient time to wait for drainage of the first washing drum. The control method is as follows.
1) The second washing drum reaches the intake program.
2) It is determined whether the water in the first washing drum is repeatedly used, and if it is repeatedly used, step 3) is executed, and if not, step 8) is executed.
3) It is determined whether the first washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 7) is executed. Execute.
4) The time until the second washing drum executes the next water intake program is T21, and the time until the first washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 8) is executed.
5) Set the allowable waiting time T20, execute step 6) if T22<T20, and execute step 8) if T22≧T20.
6) The second washing drum waits for drainage of the first washing drum and performs step 7).
7) Drain the water in the first washing drum to the second washing drum.
8) The second washing drum directly takes in clean water and the first washing drum directly discharges water.

If the water in the first washing drum is dirty, it cannot be used repeatedly. Alternatively, even if the second washing drum is the last rinse water intake, it cannot be used repeatedly. The control method is as follows.
1) The second washing drum reaches the intake program.
2) Determine if the second wash drum only leaves the last rinse with water, if not perform step 3), if yes then perform step 9).
3) It is determined whether the first washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 7) is executed. Execute.
4) The time until the second washing drum executes the next water intake program is T21, and the time until the first washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 9) is executed.
5) Set the allowable waiting time T20, execute step 6) if T22<T20, and execute step 9) if T22≧T20.
6) The second washing drum waits for drainage of the first washing drum and performs step 7).
7) Measure the turbidity value or the foam concentration value of the water in the first washing drum to determine whether the turbidity value or the foam concentration value is smaller than the set value.
If it is smaller than the set value, step 8) is executed, and if not, step 9) is executed. It is determined whether the first washing drum is drainage of the last rinse, and if it is not drainage of the last rinse, step 8) is performed, and if it is drainage of the last rinse, step 9) is performed.
8) Drain the water in the first washing drum to the second washing drum.
9) The second washing drum directly takes in clean water and the first washing drum directly discharges water.

When the water of the first washing drum is discharged to the second washing drum, if the second washing drum is the intake of washing, it is necessary to wash the detergent case and measure the water level. The control method is as follows.
1) The second washing drum reaches the intake program.
2) Determine if the second wash drum only leaves the last rinse with water, if not perform step 3), if yes then perform step 12).
3) It is determined whether the first washing drum is executing the drainage program at this time. If the drainage program is not executed, step 4) is executed. If the drainage program is executed, step 7) is executed. Execute.
4) The time until the second washing drum executes the next water intake program is T21, and the time until the first washing drum executes the drainage program is T22. If T22<T21, step 5) is executed, and if T22≧T21, step 12) is executed.
5) Set the allowable waiting time T20, execute step 6) if T22<T20, and execute step 12) if T22≧T20.
6) The second washing drum waits for drainage of the first washing drum and performs step 7).
7) Measure the turbidity value or the foam concentration value of the water in the first washing drum to determine whether the turbidity value or the foam concentration value is smaller than the set value.
If it is smaller than the set value, step 8) is executed, otherwise step 12) is executed.
8) It is determined whether the second washing drum executes the washing water intake program, and if the washing water intake program is executed, step 9) is executed, and otherwise step 10) is executed.
9) The second washing drum first takes in water for rinsing the detergent case, and after the washing water for rinsing the detergent case in the second washing drum is completed, executes step 10).
10) Drain the water in the first washing drum to the second washing drum.
11) Measure the height of the water level in the second washing drum, and when the water level in the second washing drum reaches the set water level value, if there is still water in the first washing drum, the remaining water is directly discharged. To do. Even if all the water in the first washing drum is discharged into the second washing drum, if the water level in the second washing drum does not reach the set water level value, water is taken into the second washing drum from the external water intake port.
12) The second washing drum directly takes in clean water and the first washing drum directly discharges water.

The above descriptions are merely preferred embodiments of the present invention. It should be pointed out that a person skilled in the art can make some modifications and improvements without departing from the principle of the present invention, but this should be regarded as the protection scope of the present invention.

1 First washing drum 2 Second washing drum

Claims (8)

A first washing unit and the second washing device, and a single drainage pump in communication with the outside, the first drain valve is provided between the first washing device and the drainage pump, the said second washing machine A drainage method for a multi-drum washing machine, wherein a second drainage valve is provided between the drainage pump and the drainage pump ,
Multiple washing machine of the first washing device and the second washing device sequentially drained, the draining of the first washing machine is completed, close the first drain valve of the first washing machine, the drainage pump stop,
Check whether the second washing device needs to drain, and if it needs to drain, open the second drain valve and then activate a drain pump to drain the second washing device, If you don't need to drain, stop draining the multi-drum washing machine ,
After draining the first washing device, determine whether the drain pump is operating, and if not, the drain pump continues to perform the next operation sequence, and then the drain pump operates. Again, and if it is working, determine how long the drainage pump is still working,
The method as claimed in claim 1, wherein the drainage pump operation sequence is a single cycle sequence in which the drainage pump performs a complete operation process and a shutdown process . The multi-drum washing machine according to claim 1 , wherein when the time of the operation process is set to T1 and the stop time is set to T2, the total time of the operation sequence of the drainage pump is T3=T1+T2. Drainage method. Operating time of the drainage pump, when there is the front within the time portion of 1/3 of the total time of the operation process, closing the first drain valve of the first washing machine,
If the operating time of the drainage pump is not within a third of the previous time portion of the total time of the operating process , the drainage pump completes the operating sequence and then executes the operating sequence again and then the drainage pump. The method of draining a multi-drum washing machine according to claim 1 , wherein it is determined whether or not the pump is operating. When drainage program of the first washing machine is started, the second washing device determines whether to drainage process, when performing drainage process, waits until the effluent of the second washing machine is finished, then drained Program start, without any waste water process, characterized in that to start the draining program directly, drainage method plurality drum washing machine according to any one of claims 1-3. When the drainage of the first washing device is completed, the first drain valve of the first washing device is closed, and then it is determined whether the drainage pump has stopped operating. If not, the drainage pump is stopped. from running until the end of the operation sequence, to determine whether the drain pump has stopped operation again, if the stop operation, open the second water discharge valve of the second washing machine, or characterized in that to end the drainage of a plurality drum type washing machine, more washing machine method of waste water according to any one of claims 1-4. After opening the first drain valve of the first washing device or the second drain valve of the second washing device , the drainage pump is started after the set waiting time T4 has elapsed, and the first washing device or the and performing drainage of the second washing device, the drainage process of multiple drum washing machine according to any one of claims 1-5. The waiting time T4 is drainage rate of more drum type washing machine, the first set based from the drain valve and the second drain valve on the length of the conduit to drainage pump, the waiting time is 3s ≦ T4 ≦ 6s The drainage method for a multi-drum washing machine according to claim 6 , wherein In the course of performing the draining of the first washing unit or the second washing apparatus, it is necessary to determine whether the waste water of the first washing unit or the second washing device has been completed, if the drainage has been completed, draining The method of draining a multi-drum washing machine according to claim 6 , wherein it is determined whether the pump is operating, and if the drainage is not finished , the drainage pump continues to perform the drainage.