JPH0351082A - washing machine - Google Patents

Abstract

PURPOSE:To feed water to a dehydrating tank and a washing tank with no problem for both operations by extending the release time of a dehydrating tank side water feed valve when water is concurrently fed to the dehydrating tank and the washing tank in the dehydrating/rinsing process. CONSTITUTION:A washing machine 1 with a washing tank 2 and a dehydrating tank 3 has a washing tank side water feed valve 12 feeding water to the washing tank 3 and a dehydrating tank side water feed valve 13 feeding water to the dehydrating tank 3, and the dehydrating/rinsing process alternately repeating the dehydrating operation in the dehydrating tank 3 and the water feed by the dehydrating tank side water feed valve 13 can be performed. When water is concurrently fed to the dehydrating tank 3 and the washing tank 2 in the dehydrating/rinsing process, the release time of the dehydrating tank side water feed valve 13 is controlled long. The decrease of the water feed quantity in a unit time can be supplemented, and the necessary water feed quantity can be secured as a whole.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention has a washing tank side water supply valve that supplies water to the washing tub and a dehydration tank side water supply valve that supplies water to the dehydration tank, and also has a dehydration tank side water supply valve that supplies water to the dehydration tank. The present invention relates to a washing machine capable of carrying out a dewatering and rinsing process in which a dewatering operation and water supply by the water supply valve on the dehydrating tank side are alternately repeated.

(Prior Art) Conventionally, in a two-tub washing machine, a washing tub and a dehydrating tub are installed side by side, and a washing tub-side water supply valve that supplies water to the washing tub, and a dehydrating tank that supplies water to the dehydrating tub. Equipped with a side water supply valve. Further, the dehydration tank is capable of executing a dehydration rinsing process in which dehydration operation and water supply by the water supply valve on the dehydration tank side are alternately repeated.

However, in such a configuration, if water is supplied to the spin-drying tub and water is supplied to the washing tub at the same time, the amount of water supplied to each of them per unit time will be reduced.

In this case, especially in the dehydration tank, if the water supplied is during the dehydration rinsing process, the rinsing effect will be reduced due to the above-mentioned decrease in the amount of water supplied per unit time.

Therefore, in such a case, it has been considered to give priority to water supply to the dehydration tank, and to interrupt water supply to the washing tank during that time.

(Problem to be solved by the invention) However, in the case of the above-mentioned device, when overflow rinsing is performed in the washing tub,
By cutting off the water supply to the washing tub, detergent from the laundry will not overflow with water, resulting in a decrease in rinsing performance. In addition, in this case, the water supply to the washing tub is interrupted, so washing is performed in the washing tub.

It takes a long time to finish rinsing, and furthermore, the water supply to the washing tub is stopped, which may cause the user to misunderstand that there is a malfunction.

The present invention has been made in view of the above-mentioned circumstances, and therefore, its purpose is to supply water to the dehydration tank and into the washing tank without causing any problems in operation in either the dehydration tank or the washing tank. We are here to provide you with an excellent washing machine that can do just that.

[Structure of the Invention] (Means for Solving the Problems) A washing machine of the present invention has a washing tub and a dewatering tub, and
It has a washing tank side water supply valve that supplies water to the washing tub and a dehydration tank side water supply valve that supplies water to the dehydration tank, and executes a dehydration rinse process in which dehydration operation in the dehydration tank and water supply by the dehydration tank side water supply valve are alternately repeated. Water supply that lengthens the opening time of the water supply valve on the spinner tank side when the water supply to the spinner tank and the water supply to the washing tank are performed simultaneously during the spin drying and rinsing process. The feature is that it is equipped with a control means.

In this case, the water supply control means controls the water supply valve on the dehydration tank side at a predetermined rate depending on the length of time for simultaneous execution of water supply to the dehydration tank and water supply to the washing tub during the dewatering and rinsing process. It is preferable that the opening time is increased.

(Function) According to the above means, when the water supply to the dehydration tank and the water supply to the washing tank are performed simultaneously during the dehydration rinsing process, the decrease in the amount of water supplied per unit time is reduced to the amount of water supplied to the dehydration tank at that time. By extending the opening time of the side water supply valve, it is possible to compensate and ensure the required amount of water supply overall.In this case, the water supply to the dehydration tank and the water supply to the washing tank during the dewatering and rinsing process can be If the opening time of the water supply valve on the dehydration tank side at that time is increased at a predetermined rate according to the length of the simultaneous execution time, the required amount of water supply can be ensured more reliably.

Therefore, if the required amount of water to be supplied to the spin-drying tub can be ensured comprehensively in this way, there is no need to interrupt the water supply to the washing tub, and the water supply can be executed at the same time.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

First, as shown in Figure 2, inside the outer box 1 of the entire washing machine, there are:
A washing tub 2 and a dehydration tub 3 are arranged side by side.

A stirring body 4 is disposed inside the washing WJ 2, and this stirring body 4 is rotationally driven via a belt transmission mechanism 6 by a washing motor 5 disposed outside the washing tub 2. There is. On the other hand, in this case, a dehydration basket 8 having a water sprinkling tube 7 in the center is disposed inside the dehydration tank 3.
is directly rotated by a dehydration motor 9 disposed outside the dehydration tank 3.

An operation box 10 is arranged on the outer box 1, and this operation box 1
0, a washing tank side water supply valve 12 and a dehydration tank side water supply valve 13 connected to a water faucet (not shown) with a water supply hose 11 are arranged side by side, and the washing tank side water supply valve 12 is connected to a washing tank side water supply channel 14. The washing tank side water injector 15 faces into the washing tub 2, and the dehydration tank side water supply valve 13 faces into the dehydration tank 3 through a dehydration tank side water supply channel 16 and a dehydration tank side water injector 17.

Further, a control device 18 shown in FIG. 3 is arranged inside the operation box 10.
It is set up. In detail, this device 18 is configured by, for example, a microcomputer, including the function of water supply control means, and a power supply is supplied from a power supply circuit 19 to an operation circuit 20.
An operation signal for washing and spin-drying is sent from the water level detection circuit 21, a water level detection signal for the water level stored in the washing tub 2 is sent from the initialization circuit 22, and an initialization signal is sent from the initialization circuit 22.
A waveform shaping signal is manually inputted from the waveform shaping circuit 23 and an oscillation signal is inputted from the oscillation circuit 24. Based on these input signals and a pre-stored control program, the washing motor 5. Dewatering motor9. Washing tank side water supply valve 12, dehydration tank side water supply valve 13. and the energization state of the drain valve 25 (not shown) in the drive circuit 2.
It is designed to be controlled via LE 6 to 30.
The energization state of the display 31 is also controlled by D and the like.

Here, FIG. 4 shows the basic pattern of the "dehydration rinsing process" performed in the dehydration tank 3 under the control of the control device 18, and as is clear from this FIG. 4, the "dehydration rinsing process" is , for the first 10 seconds, the dehydration motor 9 is energized and the dehydration tank side water supply valve 13 is energized, then for 35 seconds, only the dehydration motor 9 is energized, and then the dehydration tank side water is supplied for 1 minute and 40 seconds. The energization of the valve 13 and the energization of the dehydration motor 9 for 45 seconds are alternately repeated several times. Among these, the energized dehydration motor 9 rotates the dehydration basket 8 in the dehydration tank 3, and its centrifugal force causes the laundry, especially the laundry that has just been washed with detergent in the washing tub 2, to be placed in the dehydration basket 8. A dehydration operation is performed in which water containing detergent is shaken off from the washed laundry. On the other hand, the water supply valve 1 on the dehydration tank side
3, water is further supplied to the dewatering basket 8 in the dehydrating tank 3, in this case, the water sprinkler tube 7, and this supplied water is caused by the inert rotation of the dehydrating basket 8 in the water supply to the dehydrating basket 8 inside the basket. It penetrates into the laundry and dilutes the detergent solution that remains on the laundry. By repeating these steps, the laundry is rinsed.

Now, in a situation where the "dehydration rinsing process" is performed in this way, and in particular, in a situation where water is being supplied to the dehydration tank 3 (water spray tube 7), the control device 18 controls the dehydration tank side water supply shown in step S1 in FIG. Following the energization of the valve 13, the washing tank water supply flag N
and the washing tub water supply stop flag M are both set to "0" (step S2).

Next, the control device 18 determines whether the situation is such that the water supply to the washing tub 2 is to be carried out (step S3), and here, it is determined that the situation is not such that the water supply to the washing tub 2 is to be carried out. If it is determined, then it is determined whether or not the water supply to the washing tub 2 has ended (step S4). In this case, the water supply to the washing tub 2 has not been performed to begin with, and therefore it is not determined that it has finished, so next, the timer counts °C (step S5) and the water supply to the spin-drying tub 3 is started. The time t after the start is the set time T (in this case, 1 minute 40
It is determined whether the time period (seconds) has been reached (step S6).

If the set time T has not been reached, the previous operations are repeated until the set time T has been reached, and when the set time T has been reached, it is then determined whether or not the washing tank water supply flag N is "0" (step S7). Since the tank water supply flag N remains at "0", the next step is to energize the dewatering motor 19.

On the other hand, the washing tub 2
If it is determined that the water supply to the dehydration tank 3 and the water supply to the washing tub 2 are to be performed at the same time, the control device 18 will next Determine whether the tank water supply flag N is “0” (
Step S8) In this case, the washing tank water supply flag N is set to "
0", so next time 1+ (see Figure 5), when water is being supplied to dehydration tank 3 and water is being supplied to washing tub 2 at the same time, is stored as T1. Then, the washing tub water supply flag N is set to "1" (step S9).

After that, it is determined whether or not the water supply to the washing tub 2 has ended in the same manner as described above (Step S4). If it is determined that the water supply to the washing tub 2 has ended, the washing tub water supply is then carried out. It is determined whether the stop flag M is "0" (step 511). In this case, since the washing tub water supply stop flag M is still set to "0", the next time tx (see FIG. 5) when water supply to the washing tub 2 ends is stored as T2 (step 512). Further, the washing tub water supply stop flag M is set to "1" (step 813).

Figure 6 shows how the amount of water per unit time changes with respect to changes in water pressure during water supply, both when water is supplied to only one of the washing tub 2 and spin-drying tub 3, and when water is supplied to both at the same time. As shown in Figure 6,
At any water pressure, the amount of water when water is supplied to both the washing tub 2 and the dehydration tub 3 at the same time is 20% less than when water is supplied to only one of them. Therefore, the length of time during which the water supply to the dehydration tank 3 and the water supply to the laundry Wj2 were executed simultaneously (this can be determined by T2 - T1) is multiplied by 20%, and the product is calculated as the set time T.
In addition to the obtained time length (T+0.2(T2-Tl)l
By continuing to supply water to the dewatering tank 3 for the same amount of time, the decrease in the amount of water supplied per unit time can be compensated for, and the necessary amount of water can be ensured comprehensively.

Therefore, after the previous step S13, the set time T is
-T + 0.2 (T2-71) is calculated and set as a new set time (step 514), and water supply to the dehydration tank 3 is continued until this new set time is reached. That-
For example, as shown in FIG.
If it is 0 seconds, T-(1 minute 40 seconds) +0.2 X
(1 minute 20 seconds) - 100 + 0.2X80 - 1116 seconds - 1 minute 56 seconds.
The water supply to the dehydration tank 3 continues for 1 minute and 56 seconds, which is 16 seconds added to the second.

Furthermore, when continuing to supply water to the dehydration tank 3 as described above,
When determining whether or not the washing tub water supply flag N is "0" in step S8, in this case, a negative determination is made, so the process jumps to step S41, and then step S11. When determining whether or not the washing tub water supply stop flag M is "0", a negative determination is made in this case as well, so the process jumps to step S5.

Further, in contrast to the above, if the first set time T is reached before the water supply to the washing tub 2 is finished, it is determined that the washing tub water supply flag N is not "0" (step S7),
Furthermore, it is determined that the washing tank water supply stop flag M remains "0" (step 515), and then the first set time T (more specifically, the time when this set time T is reached) is set to T2.
While returning to step S13 where the washing tank water supply stop flag M is set to "1" (step 516), a new set time is similarly set using the formula T - T + 0.2 (T 2 - T 1 ). After that, in step 514), water continues to be supplied to the dehydration tank 3 until the new set time is reached, as described above.

Then, in any of the above cases, when the new set time is reached, the washing tub water supply flag N in step S7 is set to "
After determining that the value is not 0, proceed to step S.
After determining that the washing tub water supply stop flag M of 15 is not set to "0", the process moves to the operation of energizing the dewatering motor 19.

In this way, according to the present embodiment, the decrease in the amount of water supplied per unit time when the water supply to the dehydration tank 3 and the water supply to the washing tub 2 are executed simultaneously during the "dehydration rinsing process" can be reduced. By extending the opening time of the water supply valve 13 on the side of the dewatering tank at that time, it is possible to compensate and ensure the necessary amount of water supply in a comprehensive manner. In the case where the opening time of the water supply valve 13 on the dehydration tank side at that time is extended by a predetermined ratio of 50%, the required amount of water supply can be ensured more reliably.

Therefore, by being able to ensure the overall amount of water supplied to the dehydration tank 3 in this way, the dehydration tank 3 can be used without deteriorating its rinsing effect, while the washing tub 2 can be supplied with water. Since there is no need to interrupt the process and it can be executed as is, it is possible to avoid prolonging the time until the completion of washing and rinsing in the washing tub 2, and furthermore, it is possible to eliminate the possibility that the user may misunderstand that there is a malfunction. I can do it.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, and the specific length of time and specific proportions illustrated may be changed as appropriate within the scope of the gist. It can be implemented by

[Effects of the Invention] The present invention is as described above, and the following effects can be obtained.

In the washing machine according to claim 1, when water is supplied to the dehydration tank and water is supplied to the washing tub at the same time during the dewatering and rinsing process, the opening time of the water supply valve on the dehydration tank side at that time is lengthened. Therefore, the water supply to the dehydration tank and the water supply to the washing tank may be reduced, such as reducing the rinsing effect in the dehydration tank, prolonging the time to finish washing and rinsing in the washing tank, and causing misunderstandings among users. This can be done without causing any problems.

In the washing machine according to claim 2, in addition to the above, the opening time of the water supply valve on the spin-drying tank side is set to be equal to the time during which water is simultaneously supplied to the spin-drying tank and water is supplied to the washing tub during the spin-drying process. Since the length is increased at a predetermined ratio depending on the length, the above effect can be obtained more reliably.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a flowchart showing the operation during water supply during the dewatering and rinsing process;
Figure 2 is a schematic cutaway front view of the entire washing machine, Figure 3 is a schematic electrical configuration diagram, Figure 4 is a time chart showing the basic pattern of the dewatering and rinsing process, and Figure 5 shows different patterns of the same process. The time chart shown in FIG. 6 is a diagram showing how the amount of water changes per unit time with respect to changes in water pressure during water supply. In the drawing, 2 is a washing tank, 3 is a dehydration tank, 9 is a dehydration motor,
Reference numeral 12 indicates a washing tank side water supply valve, 13 indicates a dehydration tank side water supply valve, and 18 indicates a control device (water supply control means).

Claims (1)

[Scope of Claims] 1. It has a washing tank and a dehydration tank, and also has a washing tank-side water supply valve that supplies water to the washing tub and a dehydration tank-side water supply valve that supplies water to the dehydration tank. It is possible to perform a spin-drying process in which water is supplied by the water tank side water supply valve alternately, and water is supplied to the spin-drying tank and water is fed to the washing tank at the same time during the spin-drying process. When,
A washing machine characterized by comprising a water supply control means for lengthening the opening time of the water supply valve on the dehydration tank side at that time. 2. The water supply control means opens the water supply valve on the dehydration tank side at a predetermined rate depending on the length of time for simultaneous execution of water supply to the dehydration tank and water supply to the washing tub during the dehydration and rinsing process. The washing machine according to claim 1, characterized in that the washing time is increased.