JPH0822357B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention relates to a washing machine including a plurality of tubs and water supply means for each of the plurality of tubs.

(Prior Art) A two-tub type washing machine is known as one of this type of washing machines. In this two-tub type washing machine, a washing tub and a dehydrating tub are provided,
Further, each tank is provided with a plurality of water supply valves to supply water individually. The washing tank water supply valve operates in the washing process and the rinsing process to supply water to the washing tank, and the dehydration tank water supply valve operates in the dehydration rinsing process to supply water to the dehydration tank.

(Problems to be Solved by the Invention) By the way, each of the water supply valves is in the situation of being used as one water faucet, and under such circumstances, when one water supply valve is in the water supply operation, When the water supply valve starts the water supply operation,
The amount of water supplied to each tank per unit time is reduced, and problems such as prolongation of water supply time occur on the side of the washing tank, and problems such as insufficient dehydration rinsing on the side of the dehydration tank, that is, decrease in washing efficiency.

The present invention has been made in view of the above circumstances, and an object thereof is to eliminate a decrease in the amount of water supplied per unit time due to simultaneous water supply operations of the washing-side water supply means and the dehydration-side water supply means. The purpose of the present invention is to provide a washing machine capable of eliminating the deterioration of the washing machine.

[Structure of the Invention] (Means for Solving Problems) In the present invention, the washing side water supply means supplies water to the washing tank side to perform a washing step or a rinsing step, and the dehydration side water supply means supplies water to the dehydration tank side. And a single dehydration rinsing step in which only the dehydration rinsing operation is performed and an automatic dehydration rinsing step in which the dehydration rinsing operation and the dehydration operation are performed are selectively performed. And water supply control means for controlling the water supply by drivingly controlling the water supply means on the dewatering side, and this water supply control means is a water supply for a single dewatering rinse step in the water supply for the washing or rinsing step on the washing tank side. It is characterized by giving priority to water supply to the washing tank side only when a command is issued, and prioritizing water supply to the dehydration tank side when a water supply command is issued to water other than this. It is intended.

(Operation) Since the water supply on the washing tank side and the water supply on the dehydration tank side are selectively executed, the water supply amount per unit time does not decrease.

In addition, the priority is given to the water supply to the washing tank side only when the water supply command for the single dehydration rinse process occurs during the water supply for the washing or rinsing process on the washing tank side. When a water supply command for a single dehydration rinse process occurs during water supply, by giving priority to water supply to the washing tank side, during the execution of the wash process after the water supply,
It becomes possible to perform a single dehydration rinsing process at the same time,
Time can be shortened.

Then, when a water supply command is generated during water supply other than the above, since priority is given to water supply to the dehydration tank side, for example, when a water supply command for the automatic dehydration rinsing process occurs during water supply to the wash tank side, Water supply to the dehydration tub side is given priority, and priority can be given to the automatic dehydration rinsing process which is close to or at the final stage of washing, so that the laundry can be taken out early. Also, for example, when a water supply command for a washing process or a rinsing process is generated while supplying water to the dehydration tank side, the water supply to the dehydration tank side is prioritized, and the process is completed in a relatively short time. The automatic dehydration rinsing step or the single dehydration rinsing step can be completed without interruption.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, in FIG. 2, 1 is an outer box of a two-tub type washing machine, in which a washing tub 2 and a dehydrating tub 3 are arranged. Reference numeral 4 is a stirrer arranged at the bottom of the washing tank, and 5 is a washing motor for driving the stirring body. Denoted at 6 is a dewatering basket placed in the dewatering tank 3, 7 is a sprinkling cylinder standing upright in the dewatering basket 6, and 8 is a dewatering motor for driving the dewatering basket 6.

9 is a washing side water supply valve which is a washing side water supply means for supplying water to the washing tank 2 side, and 10 is a dehydration side water supply valve which is a dehydration side water supply means for supplying water to the dehydration tank 3 side. Ten
Is a normally closed solenoid valve that is energized to open. When the wash side water supply valve 9 is opened, water from the water tap is passed through the water supply hose 11 and the water channel 12
The dewatering side water supply valve 10 also supplies water from the water tap through the water supply hose 11 to the sprinkler cylinder 7 of the dewatering basket 6 via the water channel 13. There is.

Next, in FIG. 1, 14 is an operation control circuit having a water supply control function, which is configured to include a microcomputer. Reference numeral 15 is an operation unit input circuit, which is provided with various controls for starting and stopping the operation of the washing operation and dehydration operation, and the operation control circuit 14 is provided with an input by the switch operation. There is. 16 is a drive circuit for the washing motor 5, 17 is a drive circuit for the dehydration motor 5, 18 is a drive circuit for driving the wash side water supply valve 9, and 19 is a drive circuit for driving the dehydration side water supply valve 10.

Thus, the operation control circuit 14 controls the washing operation in accordance with the program for the washing operation and controls the dehydration operation in accordance with the program for the dehydration operation. The washing operation is started by an operation start command input from the operation unit input circuit 15. In this washing operation, the agitator 4 is driven with the washing tank 2 being supplied with a predetermined amount of water and a detergent. In the process, a rinsing process for driving the stirring body 4 with a predetermined amount of water supplied to the washing tank 2, an overflow rinsing process of driving the stirring body 4 while supplying water into the washing tank 2, and a relatively small amount of water in the cleaning tank 2. The tank cleaning step of driving the agitator 4 in order to clean the cleaning tank 3 with water supplied is included. On the other hand, the dehydration operation is started by the input of a dehydration operation start command from the operation unit input circuit 15. In this dehydration operation, the dehydration rinse for rotating the dehydration basket 6 while supplying water and the rotation drive for the dehydration basket 6 are performed. There is an automatic dehydration rinsing step that automatically executes dehydration by the above, and a single dehydration rinsing step that executes only dehydration rinsing and does not execute dehydration.
The water supply command to the wash side water supply valve 9 is generated based on the input of the operation start command for the wash side, and
The water supply command for 10 is generated based on the input of the operation start command for the dehydration side.

Further, the operation control circuit 14 controls the water supply valves 9 and 10 as follows by the software configuration of the program at the time of water supply in the washing operation and water supply in the dehydration operation.

FIG. 3 shows a flow chart of water supply control contents during the dehydration operation, and FIG. 4 shows a flow chart of water supply control contents during the washing operation. In the control contents shown in FIGS. 3 and 4, the washing side water supply valve 9 and the dehydration side water supply valve 10 are controlled while reading various flag states of the flag memory. In this case, priorities are set for the water supply operations of the water supply valves 9 and 10. The order of priority is shown in FIGS. 5 and 6. FIG. 5 shows the order of priority when a water supply command is issued to the dehydration-side water supply valve 10 while the wash-side water supply valve 9 is supplying water, and FIG. 6 shows that the dehydration-side water supply valve 10 is supplying water. It shows the priority when a water supply command is issued to the wash side water supply valve 9 in the situation.

Then, the case where the dehydration side water supply valve 10 is controlled under the condition that the wash side water supply valve 9 is not in the opening operation and the water supply start command is not given to the wash side water supply valve 9 will be described. Now, when an operation start command for the dehydration side is input from the operation unit input circuit 15 and a water supply command for the dehydration side water supply valve 10 is generated, the water supply control of the flowchart shown in FIG. 3 is performed. First, as you can see from steps P _{1 to} P ₃ ,
If the water supply command is for the automatic dehydration rinsing process, the dehydration side water supply command flag E is set to "1", and if not (for the single dehydration rinsing process), the dehydration side water supply command flag F is set to " 1 ”. Then, in the next step P _4, wash-side water supply operation flag AA, BB, CC, either DD is determined whether or not "1", i.e. washing step, because rinsing cycle, overflow rinsing cycle, vessel In any of the washing steps, it is judged whether or not the wash side water supply valve 9 is opened (whether or not the water supply operation is being performed), and if the water supply valve 9 is not in the open state (wash side flags AA, BB, CC, if DD are both "0"), the step P ₅ in the dehydration side water supply operation flag EE, FF dehydration side water supply command flag E, depending on the F is "1", and dehydration side at step P ₆ Open the water supply valve 10. The opening operation of the dehydration side water supply valve 10 is performed in a predetermined time. During the opening operation of the dehydration side water supply valve 10, although not shown in FIG. 3, the dehydration motor 8 is intermittently driven to perform dehydration rinse. Then, the dehydration-side water supply valve 10 is shifted to Step P ₈ through step P ₇ when closed after a predetermined time, the flag E, F, EE, the FF as "0", the opening control of the dewatering side water supply valve 10 To finish.

Next, a case will be described in which the washing-side water supply valve 9 is controlled under the condition that the dehydration-side water supply valve 10 is not in the opening operation and the water-supply start command for the dehydration-side water supply valve 10 is not generated. now,
When an operation start command is input for the wash side and a water supply command is issued to the wash side water supply valve 9, the water supply control of the flowchart shown in FIG. 4 is performed. First, as seen from step S ₁ to step S _7, the water supply instruction wash step,
Judging whether it is a trial rinsing process, an overflow rinsing process, or a tank cleaning process, and the washing side water supply command flags A, B, C, D are selectively set to "1" according to each process.
And In the next step S _8, the dehydration-side water supply operation flag E
It is judged whether E or FF is "1", that is, the water supply valve is used in either the automatic dehydration rinsing stroke or the single dehydration stroke.
10 it is determined whether it is open, if the water supply-side water supply valve 10 is not in the open state (flag EE, both FF is "0"), in step S _9, wash-side water supply operation flag AA , BB,
CC and DD are selectively set to "1" according to the wash-side water supply command flags A, B, C, and D. Then, washing-side water supply valve at Step S ₁₀ 9
Open up. The opening operation of the wash side water supply valve 9 is executed until the set water supply amount is reached or in a predetermined time. During this run, the step S _11, dehydration-side water supply flag E As can be seen from the step S _12, F is whether it is set to "1" (whether dehydrated side water supply command occurs) to determine , Each flag E,
F is remains both a "0" state, if it is closed washing side water supply valve 9 (determined in step S _13), in step S _14, collectively the flags to D, the AA~DD "0 After that, the water supply control of the wash side water supply valve 9 is terminated.

As can be seen from the above description, when a water supply command is issued to one of the wash-side water supply valve 9 and the dehydration-side water supply valve 10, the other is not in the water supply operation state and the water supply command for the other is also generated. In the absence state, one of the water supply valves executes the water supply operation.

Next, when the water supply command is input to the wash side water supply valve 9, and the dehydration side water supply valve 10 is already in the water supply operation, as shown in step P ₅ of FIG. since the water supply operation flag EE, either FF is "1", the dehydration-side water supply operation flag EE during the determination in step S ₈ of FIG. 4, any of the FF is determined as "1". Therefore, the water supply control for the wash side water supply valve 9 is performed in this step S ₈
It becomes a standby state. That is, in the situation where the water supply operation of the dehydration side water supply valve 10 precedes the water supply command to the wash side water supply valve 9, the water supply operation of the dehydration side water supply valve 10 has priority as shown in the priority order shown in FIG. The water supply operation of the wash side water supply valve 9 is prohibited during the execution. In this case, when the dehydration side water supply valve 10 finishes the water supply operation, step P _{8 in} FIG.
, The dehydration side water supply operation flag EE, FF is "0".
Therefore, in step S ₈ in FIG. 4, the flag EE, FF is set.
If any of the above is judged to be “0”, the washing side water supply valve 9
A water supply standby state release of the control, and wash-side water supply valve 9 is opened in step S ₁₀ through step S _9.

Also, while the washing side water supply valve 9 is opening, the dehydration side water supply valve 10
When the water supply command for
In S ₁₁ or step S _12, dehydration-side water supply instruction flag E, one of F is determined to be "1". If the dehydration-side water supply command is for the automatic dehydration rinsing process, the dehydration-side water supply command flag E becomes "1", and therefore the steps of FIG.
Proceeds to step S ₁₅ via S _11, wash-side water supply valve 9 is closed, and wash-side water supply operation flag AA in step S _16, B
B, CC, DD are collectively set to "0". Then, after a predetermined waiting some time (step S _17), the flow returns to step S _8. And Thus, in step S _16, when the flag AA, BB, CC, DD is set to "0", FIG. 3 step P ₄ in the wash-side water supply operation flag AA, BB, CC, either DD since but is determined as "1", the dehydration-side water supply operation flag EE is "1", and dehydration-side water supply valve 10 is opened (step P _6). Therefore, the water supply control in Figure 4, by dehydrating side water supply operation flag EE is already "1" to the aforementioned waiting a predetermined slight time was returned to Step S ₈ (Step S _17), dehydrated It will be in a standby state until the side water supply valve 10 finishes the opening operation. That is, even if the wash side water supply valve 9 is in the water supply operation, if the water supply command for the automatic dehydration rinsing process is generated, the water supply operation in the automatic dehydration rinsing process is prioritized (see columns (1) to (4) in FIG. 5). ), The water supply operation of the wash side water supply valve 9 is prohibited. When the water supply instruction for the single dewatering rinsing operation occurs during the opening operation of the washing side water supply valve 9, because dehydration side flag F in step S ₁₂ of FIG. 4 is determined as "1", the step S ₁₈ Transition to the current wash-side water supply valve 9
Whether the water supply operation of the tank is for the tank cleaning process (flag
DD is the determination of "1" or whether it) is made, if the tank cleaning process, while stopping the water supply operation of detergent have side water supply valve 9 proceeds to subsequent step S _15, the steps of FIG. 4 After passing through P ₄ , the dehydration side water supply valve 10 is opened in step P ₆ .
Therefore, the priority order in this case is shown in the column (8) of FIG.
Further, if the water supply operation of the wash side water supply valve 9 is any one of the wash stroke, the rinsing stroke and the overflow rinsing stroke at the present time, and the dehydration side water supply command is for the single dehydration rinsing stroke, steps S ₁₈ to S _Move to ₁₃ . That is, in this case, the water supply operation of the wash side water supply valve 9 is prioritized (see columns (5) to (7) of FIG. 5), the water supply operation of the wash side water supply valve 9 is completed, and FIG. since step S ₁₄ in wash-side water supply operation flag AA of, BB, CC, the DD is collectively to "0", the determination in step P ₄ of FIG. 3 is "NO", the single dewatering The water supply operation for the rinse stroke is started.

On the other hand, as the water supply operation of the dehydration side water supply valve 10 can be understood from step P ₆ , step P ₇ and step P _{8 in} FIG. 3, regardless of whether or not the water supply command is input to the wash side water supply valve 9, It is executed until the dehydration side water supply valve 10 is closed within a predetermined time.
That is, even if a water supply command is input for the washing-side water supply valve during the opening operation of the dehydration-side water supply valve 10, it is uniquely specified.
The water supply operation of the water is given priority (see FIG. 6), and the wash side water supply valve 9
Water supply operation is prohibited. Regarding the above-mentioned priority order, of the stroke contents on the dehydration side and the stroke contents on the wash side, the one with higher water supply importance is given priority in consideration of the length of the stroke execution time and the effect of rinsing. ing.

As described above, according to this embodiment, the water supply on the side of the washing tank 2 and the water supply on the side of the dehydration tank 3 are selectively executed.
The amount of water supplied per unit time does not decrease, and the washing efficiency does not decrease.

Further, when a water supply command for a single dewatering rinse process is generated during the water supply for the washing process or the rinsing process (the trial rinsing process and the overflow rinsing process) on the washing tub 2 side, the water supply to the washing tub 2 side is performed. Since priority is given, it is possible to simultaneously perform the single dehydration rinsing step during the execution of the washing step after the water supply, and the time can be shortened.

Then, when a water supply command is generated during water supply other than the above, the water supply to the dehydration tank 3 side is prioritized. Therefore, for example, a water supply command for the automatic dehydration rinsing process is generated during water supply to the washing tank 2 side. In some cases, the water supply to the dehydration tub 3 is prioritized, and the automatic dehydration rinsing process, which is often close to or at the final stage of washing, is prioritized, so that the laundry can be taken out early. Further, for example, when a water supply command for the washing process or the rinsing process is generated during the water supply to the dehydration tank 3 side, the water supply to the dehydration tank 3 side is prioritized, and the process is performed in a relatively short time. Thus, the automatic dehydration rinsing process or the single dehydration rinsing process which is completed can be completed without interruption, and as a whole, it becomes possible to perform the optimum water supply control for the content of the washing operation.

In the above embodiment, the case where the water supply command for the wash-side water supply valve 9 and the dehydration-side water supply valve is generated based on the switch input operation of the operation unit input circuit 15 has been illustrated, but the present invention provides these water supply commands. Can be applied even when is sequentially generated by the execution of the automatic driving control program.

[Effects of the Invention] As is apparent from the above description, the present invention selectively supplies water on the side of the washing tank and water on the side of the dehydration tank. Does not decrease, it is possible to eliminate a decrease in washing efficiency, and further, when a water supply command for a single dehydration rinse process occurs in the water supply for the washing process or rinsing process on the washing tank side,
Since priority is given to water supply to the wash tank side, by prioritizing water supply to the wash tank side, it is possible to perform a single dehydration rinsing process at the same time during the washing process after the water supply, which saves time. In addition to the above, when a water supply command occurs during water supply other than the above, priority is given to water supply to the dehydration tub side, so it is possible to take out the laundry early and the process is completed in a relatively short time. It is possible to complete the automatic dewatering rinsing process or the single dewatering rinsing process without interruption, and thus it is possible to perform water supply control that is optimal for the laundry operation content.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a block diagram of the electrical configuration, FIG. 2 is a front view of the entire cutaway, and FIGS. 3 and 4 are flow charts showing water supply control contents, respectively. 6 and 6 are diagrams showing the priority order. In the figure, 2 is a washing tank, 3 is a dehydration layer, 6 is a dehydration basket, 7 is a sprinkler cylinder, 9 is a washing side water supply valve (washing side water supply means), 10 is a dehydration side water supply valve (dehydration side water supply means), 14 Is an operation control circuit (water supply control means).

Claims (1)

[Claims] 1. An automatic system in which the washing side water supply means supplies water to the washing tank side to perform a washing step or a rinsing step, and the dehydration side water supply means supplies water to the dehydration tank side to perform a dehydration rinse operation and a dehydration operation. A dehydration rinsing process and a single dehydration rinsing process in which only a dehydration rinsing operation is performed, wherein the washing side water supply means and the dehydration side water supply means are drive-controlled to control water supply. A control means is provided, and this water supply control means supplies the water to the washing tank side only when a water supply command for a single dehydration rinsing process occurs in the water supply for the washing or rinsing process on the washing tank side. A washing machine which is prioritized and is controlled to give priority to water supply to the dehydration tub side when a water supply command is issued during water supply other than this.