JP2021097846A - Washing machine - Google Patents

Abstract

To provide a washing machine in which laundry is not damaged and rinsing performance does not deteriorate even in the case where a washing step or a rinsing step is resumed after taking out part of the laundry or adding laundry which has been separately washed.SOLUTION: A washing machine includes: a first water amount change detection part 53 for detecting water amount change of a first water amount in a washing and dewatering tub when a lid body is opened and a second water amount in the washing and dewatering tub when the lid body is closed, in the case where a washing step or a rinsing step is interrupted and a lid body is opened/closed after a setting water amount determination part 52 has determined a setting water amount based on a load amount detected by a load amount detection part 51 at the start of the washing step and the washing step is started; and a water amount adjustment part 56 for adjusting the water amount in the washing and dewatering tub based on the setting water amount corrected by a correction part 55 based on the detected water amount change. With these, even when the washing step or the rinsing step is resumed after interruption, washing or rinsing can be executed with a proper water amount with respect to the amount of laundry.SELECTED DRAWING: Figure 2

Description

The present invention relates to, for example, a washing machine capable of performing a washing step, a rinsing step and a dehydration step.

When washing in a washing machine, it is common that after the laundry is put into the washing / dehydrating tub, the washing step, the rinsing step, and the dehydration step are performed in this order. When the washing machine starts the washing process, the load amount corresponding to the amount of laundry put into the washing / dehydrating tub is detected, and water is supplied to the washing / dehydrating tub based on the set amount of water according to the load amount. To. Since the above-mentioned load amount detection is performed in a state where water is not supplied to the washing / dehydrating tub, the amount of laundry can be detected appropriately.

On the other hand, if water is contained in the washing / dehydrating tub when the washing process is started, the amount of laundry cannot be detected, and it is difficult to determine the optimum set amount of water. Further, when the operation is started from the rinsing process after the washing process is completed and the water is stored in the state of being stored, it is conceivable to perform the rinsing process with the set amount of water already determined. It is unclear whether or not the set amount of water is optimal for the amount of water.

For example, when the rinsing step is performed in a state where the amount of water is smaller than the amount of laundry, there is a problem that the laundry is damaged or the rinsing performance is deteriorated.

Therefore, as a washing machine that can reduce the amount of water used without performing the rinsing operation with a large water level setting in consideration of cloth pain and insufficient rinsing performance, when the operation is started from the rinsing process, water will be in the rinsing operation start state. There is a washing machine that determines that the washing process has been performed and the amount of laundry cloth has been measured when it has entered a certain amount or more, and sets the rinsing set water level based on the water level at the start of rinsing operation (for example). Patent Document 1).

JP-A-2018-79167

However, when starting from the rinsing step, it is conceivable to take out a part of the laundry washed in the washing step or add the separately washed laundry to restart the rinsing step. In that case, it is different from the amount of laundry at the start of the washing process, and it is not appropriate to set the rinsing set water level based on the water level at the start of the rinsing operation.

Further, in the washing machine of Patent Document 1, it is determined whether or not water is contained in a certain amount or more in the rinsing operation start state, but it is unknown at what point after the washing process the operation is stopped, for example, washing. If the operation is stopped in the middle of the drainage operation of the process, the water level may be lower than the final water level of the washing process (the amount of water appropriate for the amount of laundry). In such a case, the problem that the laundry is damaged or the rinsing performance is deteriorated cannot be solved.

Therefore, an object of the present invention is to provide a washing machine capable of performing washing or rinsing with an appropriate amount of water even when the washing step or rinsing step is interrupted and then restarted.

That is, the washing machine of the present invention is a washing machine capable of performing a washing step, a rinsing step and a dehydration step, and a load corresponding to the amount of laundry put into the washing / dehydrating tub at the start of the washing step. The load amount detecting means for detecting the amount, the set water amount determining means for determining the set water amount to be supplied to the washing / dehydrating tub based on the load amount detected by the load amount detecting means, and the set water amount determining means by the set water amount determining means. When the washing step or the rinsing step is interrupted and the lid for opening and closing the laundry inlet is opened and closed after the washing step is started. The first water amount change detecting means for detecting the change in the amount of water between the first amount of water in the washing / dehydrating tub and the second amount of water in the washing / dehydrating tub when the lid is closed, and the washing step or the rinsing step. When restarting, the correction means for correcting the set water amount based on the water amount change detected by the first water amount change detecting means, and the washing / dehydrating tub based on the set water amount after being corrected by the correction means. It is characterized in that it is provided with a water amount adjusting means for adjusting the amount of water in the water.

In the washing machine of the present invention, it is preferable that the correction means reduces the set water amount when the first water amount is larger than the second water amount.

In the washing machine of the present invention, it is preferable that the correction means increases the set water amount when the second water amount is larger than the first water amount.

In the washing machine of the present invention, it is preferable that the correction means does not change the set water amount when the first water amount is the same as the second water amount.

In the washing machine of the present invention, the set water amount determining means is used when the lid is not opened until the first predetermined time elapses after the washing step or the rinsing step is interrupted, or the lid. If the lid is not closed until the second predetermined time elapses from the time when the lid is opened, it is preferable to reset the already determined set amount of water.

In the washing machine of the present invention, when the washing process is interrupted and then restarted, and when the water amount change is detected by the first water amount change detecting means, washing is performed when the washing process is restarted. A second water amount change detecting means for detecting a change in the amount of water between the third amount of water in the dehydration tub and the fourth amount of water in the washing / dehydrating tub when the washing process is interrupted again after being restarted is provided. The correction means was detected by the water amount change detecting means and the second water amount change detecting means when the washing step was restarted and the third water amount was larger than the fourth water amount. It is preferable to correct the set amount of water based on the change in the amount of water.

In the washing machine of the present invention, when the washing process or the rinsing process is interrupted and then restarted, the set amount of water determined at the start of the washing process is corrected based on the change in the amount of water in the washing / dehydrating tub after the interruption. To. Therefore, even if a part of the laundry is taken out after the washing process or the rinsing process is interrupted, or the washing process or the rinsing process is interrupted after the separately washed laundry is added and then restarted. , The laundry can be washed or rinsed with an appropriate amount of water for the amount of laundry.

In the washing machine of the present invention, when the amount of water in the washing / dehydrating tub decreases after the washing step or rinsing step is interrupted, it is considered that the amount of laundry in the washing / dehydrating tub is smaller than that at the time of interruption. The amount of water in the washing / dehydrating tub can be adjusted by reducing the amount of water.

In the washing machine of the present invention, when the amount of water in the washing / dehydrating tub increases after the washing step or rinsing step is interrupted, it is considered that the amount of laundry in the washing / dehydrating tub is larger than that at the time of interruption. The amount of water in the washing / dehydrating tub can be adjusted by increasing the amount of water.

In the washing machine of the present invention, if the amount of water in the washing / dehydrating tub does not change after the washing step or rinsing step is interrupted, the amount of laundry in the washing / dehydrating tub is considered to be the same as at the time of interruption. The amount of water in the tank cannot be changed.

In the washing machine of the present invention, when the lid 22 is not opened until the first predetermined time elapses after the washing step or the rinsing step is interrupted, or when the lid 22 is opened, the second predetermined If the lid 22 is not closed until the time has elapsed, the set amount of water determined at the start of the washing process is reset because no control is required when resuming the interrupted operation.

In the washing machine of the present invention, even if the amount of water in the washing / dehydrating tub changes after the washing process is interrupted, when dry laundry is added, the laundry contains water and is therefore washed / dehydrated. The amount of water in the tank may have changed. In that case, if the set water amount determined at the start of the washing process is corrected based on the change in the water amount in the washing / dehydrating tub after the interruption, the set water amount is not corrected to an appropriate level. Therefore, the washing process is restarted without correcting the set amount of water so that the dry laundry contains water, and the washing process is taken into consideration of the change in the amount of water in the washing / dehydrating tub after the washing process is restarted. It is corrected to the appropriate set water amount by correcting it to the set water amount determined at the start of.

It is a vertical cross-sectional view which shows the schematic structure of the washing machine 100 which concerns on this embodiment. It is a control block diagram of the washing machine 100 of FIG. It is a flowchart which shows the flow | flow of the operation when the operation is interrupted after the washing operation of a washing process is completed. It is a flowchart which shows the flow of the process of the water amount correction determination. It is a flowchart which shows the flow | flow of the operation when the operation is interrupted in the middle of the washing operation of a washing process. It is a flowchart which shows the flow of the process of the water amount supply determination.

Hereinafter, the washing machine 100 according to the embodiment of the present invention will be described with reference to the drawings.

The washing machine 100 is a vertical washing machine capable of performing a washing step, a rinsing step, and a dehydration step, and has an outer box 1, and a plurality of bottomed cylindrical outer tubs 2 (not shown) inside the outer box 1. It is suspended by the hanging rod of. Inside the outer tub 2, a washing / dehydrating tub 3 having a large number of water passage holes around it is rotatably supported around a support shaft 4 fixed to the bottom wall thereof. The inner bottom of the washing / dehydrating tub 3 is provided with a stirring blade 5 rotatably around an inner shaft 6 fitted into the support shaft 4.

The rotational power of the motor 7 attached to the lower surface of the outer tank 2 includes a transmission mechanism including a small pulley 9, a V-belt 10, a large pulley 11 and the like fixed to the motor shaft 8, a clutch mechanism 12 and a torque motor 13. It is transmitted to the support shaft 4 and the inner shaft 6 via the power switching mechanism 14.

Mainly during a cleaning operation or a rinsing operation, the clutch mechanism 12 disengages the connection between the large pulley 11 and the support shaft 4 according to the operation of the torque motor 13, and moves the stirring blade 5 in one direction or both directions via the inner shaft 6. Rotate. On the other hand, during the dehydration operation, the clutch mechanism 12 connects the large pulley 11 and the support shaft 4, and integrally rotates the washing / dehydrating tub 3 and the stirring blade 5 in one direction.

A water supply pipe 15 connected to an external water tap is arranged behind the upper part of the outer box 1, and when the water supply valve 16 is opened, the water introduced through the water supply pipe 15 is provided with a detergent container. It flows into the water port 17 and is poured into the outer tank 2. On the other hand, a drainage port 18 is provided at the bottom of the outer tank 2, and the drainage pipe 19 connected to the drainage port 18 is opened and closed by the drainage valve 20.

In the opening / closing operation of the drain valve 20, when the stirring blade 5 is separated from the washing / dehydrating tub 3 and can rotate independently, the drain valve 20 is closed and the stirring blade 5 and the washing / dehydrating tub 3 are integrated. When in the rotating state, the drain valve 20 is opened. Further, the opening / closing operation of the drain valve 20 can be performed independently of the operating operation.

A lid 22 that can be opened and closed is provided in the laundry inlet 21 opened on the upper surface of the outer box 1. A lid open / close detection device 24 is installed in front of the upper part of the outer box 1.

Although not shown in FIG. 1, an operation unit 61 provided with various key switches is provided on the side of the insertion port 21 on the upper surface of the outer box 1.

FIG. 2 is a control block diagram of the washing machine 100 of the present embodiment. As shown in FIG. 2, the control unit 50 of the washing machine 100 is composed of, for example, a microcomputer or the like, and executes the CPU, a ROM in which a program for controlling the operation of the washing machine 100 is stored, and the above program. It is equipped with a RAM for temporarily storing data and the like used when performing the program. The operation of the washing machine 1 is controlled by the control unit 50.

The control unit 50 includes a load amount detection unit 51, a set water amount determination unit 52, a first water amount change detection unit 53, a second water amount change detection unit 54, a correction unit 55, and a water amount adjustment unit 56. ing.

The load amount detecting unit 51 detects the load amount corresponding to the amount of laundry put into the washing / dehydrating tub 3 at the start of the washing process. Specifically, during the inertial rotation period when the motor 7 is turned on for a short time to drive the stirring blade 5 to rotate and then the motor 7 is turned off, the load amount detecting unit 51 synchronizes with the rotation of the motor 7. The pulse signal is counted, and the load amount is detected by the counted value. The larger the load amount, the larger the resistance to the rotation of the stirring blade 5, and therefore the duration of the inertial rotation becomes shorter.

The set water amount determination unit 52 determines the set water amount to be supplied to the washing / dehydrating tub 3 based on the load amount detected by the load amount detection unit 51, and stores the determined set water amount. Specifically, the set water amount determination unit 52 determines the set water amount determined in a plurality of steps or steplessly according to the load amount. The set water amount determination unit 52 determines the set water amount so that the set water amount increases as the load amount increases.

When the set water amount determination unit 52 determines the set water amount and the washing process is started, the first water amount change detection unit 53 interrupts the washing process or the rinsing process and opens and closes the lid 22. The change in the amount of water in the washing / dehydrating tub 3 is detected.

Therefore, the first water amount change detection unit 53 has a first water amount detection unit 53a and a second water amount detection unit 53b.

When the lid 22 is opened and closed after the washing step or the rinsing step is interrupted, the first water amount detecting unit 53a measures the first water amount in the washing / dehydrating tub 3 when the lid 22 is opened. It is detected by the output of 62.

When the lid 22 is opened and closed after the washing step or the rinsing step is interrupted, the second water amount detecting unit 53b detects the second water amount in the washing / dehydrating tub 3 when the lid 22 is closed. It is detected by the output of 62.

Therefore, the first water amount change detecting unit 53 performs a washing step or a rinsing step based on the first water amount detected by the first water amount detecting unit 53a and the second water amount detected by the second water amount detecting unit 53b. After the interruption, the change in the amount of water from the time when the lid 22 is opened to the time when the lid 22 is closed is detected.

The second water amount change detection unit 54 is restarted after the washing process is interrupted, and when the lid 22 is opened and closed after the washing process is interrupted and there is a change in the amount of water in the washing / dehydrating tub 3, the washing process is restarted. The change in the amount of water in the washing / dehydrating tub 3 is detected.

Therefore, the second water amount change detection unit 54 has a third water amount detection unit 54a and a fourth water amount detection unit 54b.

When the washing process is restarted after being interrupted, the third water amount detecting unit 54a detects the third water amount in the washing / dehydrating tub 3 when the washing process is restarted by the output of the water level sensor 62.

The fourth water amount detecting unit 54b is the fourth water amount in the washing / dehydrating tub 3 when the washing process is restarted after the washing process is interrupted and the third predetermined time elapses after the washing process is restarted. Is detected by the output of the water level sensor 62.

Therefore, the second water amount change detecting unit 54 interrupted the washing step based on the third water amount detected by the third water amount detecting unit 54a and the fourth water amount detected by the fourth water amount detecting unit 54b. After being restarted later, the change in the amount of water during the third predetermined time is detected.

When the washing step or the rinsing step is interrupted and then restarted, the correction unit 55 is stored in the set water amount determination unit 52 based on the water amount change detected by the first water amount change detection unit 53. To correct.

Specifically, when the correction unit 55 detects that the amount of water has decreased by the first water amount change detection unit 53 (when the first water amount is larger than the second water amount), the laundry in the washing / dehydrating tub 3 it is considered that the amount is reduced, corrects the set amount of water to water alpha ₁ decreases. The amount of water α ₁ (where α ₁ > 0) is the amount of water corresponding to the amount of decrease in the amount of water detected by the first water amount change detection unit 53.

Further, when the correction unit 55 detects that the amount of water has increased by the first water amount change detection unit 53 (when the first water amount is smaller than the second water amount), the amount of laundry in the washing / dehydrating tub 3 increases. Therefore, the set amount of water is corrected so as to increase the _{amount of water α 2.} The amount of water α ₂ (where α ₂ > 0) is the amount of water corresponding to the amount of increase in the amount of water detected by the first water amount change detection unit 53.

Further, the correction unit 55 does not correct the set water amount when the first water amount change detection unit 53 detects that the water amount has not changed (when the first water amount is the same as the second water amount).

Further, the correction unit 55 is determined when the lid 22 is not opened until the first predetermined time elapses after the washing step or the rinsing step is interrupted, and when the lid 22 is opened. When the lid 22 is not closed until the time has elapsed, the set amount of water is cleared.

Further, the correction unit 55 is based on the water amount change detected by the second water amount change detection unit 54 when the water amount in the washing / dehydrating tub 3 decreases when the washing process is restarted after the washing process is interrupted. And correct the set amount of water.

Specifically, when the correction unit 55 detects that the water amount has decreased by the second water amount change detection unit 54 (when the third water amount is larger than the fourth water amount), after the washing step is interrupted, the correction unit 55 for dry laundry is considered to have been put into the washing and dewatering tub 3, corrects the set amount of water so as to increase the amount of water alpha _3. The amount of water α ₃ (where α ₃ > 0) is the amount of water corresponding to the amount of decrease in the amount of water detected by the second water amount change detection unit 54.

When the washing step or the rinsing step is interrupted, the water amount adjusting unit 56 adjusts the amount of water in the washing / dehydrating tub 3 based on the set amount of water after being corrected by the correction unit 55.

The operation unit 61, the lid open / close detection device 24, and the water level sensor 62 are connected to the control unit 50. Therefore, the operation signal is input to the control unit 50 from the operation unit 61, and the on / off signal is input from the lid open / close detection device 24. The on signal from the lid open / close detection device 24 indicates that the lid 22 is in the closed closed state, and the off signal from the lid open / close detection device 24 indicates that the lid 22 is in the open open state. Shown. Further, an output signal corresponding to the amount of water in the washing / dehydrating tub 3 is input from the water level sensor 62 to the control unit 50.

Further, the motor 7, the torque motor 13, the water supply valve 16, and the drain valve 20 are connected to the control unit 50.

Therefore, the control unit 50 performs the washing operation of the washing machine 100 by controlling the motor 7 and the torque motor 13. The washing operation of the washing machine 100 is performed in the order of a washing step, a rinsing step, and a dehydration step. In the washing process, a water supply operation, a washing operation, a drainage operation, and a dehydration operation are performed. In the rinsing step, a water supply operation, a rinsing operation, a drainage operation, and a dehydration operation are performed. Further, the control unit 50 adjusts the amount of water in the washing / dehydrating tub 3 by controlling the water supply valve 16 and the drain valve 20 to switch between supplying water to the washing / dehydrating tub 3 and draining from the washing / dehydrating tub 3.

The operation unit 61 is an operation panel having a plurality of operation keys, and as operation keys, for example, an operation designation unit including a power key, a course key for selecting an operation course, and instructions for starting and pausing the washing operation. It has a start / pause key for. In the following description, the start / pause key may be referred to as a start key when instructing the start of the washing process, and may be referred to as a pause key when instructing the suspension of the washing process.

(When the operation is interrupted after the washing operation of the washing process is completed)
The operation when the operation is interrupted after the washing operation of the washing step is completed will be described with reference to FIG.

<Step S1>
When the user puts the laundry into the washing / dehydrating tub 3, makes appropriate settings by the operation unit 61 and presses the start key, the control unit 50 starts the washing process in step S1.

<Step S2>
In step S2, the control unit 50 detects the load amount.

<Step S3>
In step S3, the control unit 50 determines the set water amount based on the load amount detected in step S2.

<Step S4>
In step S4, the control unit 50 performs a water supply operation of supplying water to the washing / dehydrating tub 3 based on the set amount of water detected in step S3. Specifically, the control unit 50 opens the water supply valve 16 to supply water to the washing / dehydrating tub 3 to a water level corresponding to the set amount of water.

<Step S5>
In step S5, the control unit 50 performs a cleaning operation. As a cleaning operation, the control unit 50 performs a cleaning operation by rotating the stirring blade 5 in one direction or both directions at a predetermined speed.

<Step S6>
When the user presses the pause key after the washing operation is completed, the control unit 50 interrupts the operation of the washing process in step S6.

<Step S7>
In step S7, the control unit 50 makes a water amount correction determination. Specifically, the control unit 50 sets the first correction flag to 0, 1, or 2 based on the change in the amount of water in the washing / dehydrating tub 3, or clears the set amount of water. The water amount correction determination will be described in detail later.

<Step S8>
When the user presses the start key after interrupting the operation of the washing step, in step S8, the control unit 50 adjusts the amount of water in the washing / dehydrating tub 3 in steps S9 to S14.

<Step S9>
In step S9, the control unit 50 determines whether the set water amount is determined based on the load amount, that is, whether the set water amount is not cleared. After that, the process proceeds to step S10.

<Step S10>
If it is determined in step S9 that the set water amount has been determined by the control unit 50, the process proceeds to step S10, and the control unit 50 determines whether or not the first correction flag is not 0. When the control unit 50 determines in step S10 that the first correction flag is 0, the control unit 50 proceeds to step S15 without changing the amount of water in the washing / dehydrating tub 3.

<Step S11>
If the control unit 50 determines in step S10 that the first correction flag is not 0, the process proceeds to step S11, and the control unit 50 determines whether or not the first correction flag is 1.

<Step S12>
If the first correction flag by the control unit 50 in step S11 is judged to be 1, the process proceeds to step S12, the control unit 50, and water adjusted to the amount of water the amount of water alpha ₁ reduction in the washing and dewatering tub 3 After that, the process proceeds to step S15.

<Step S13>
When the control unit 50 determines in step S11 that the first correction flag is not 1, the first correction flag is 2, so the process proceeds to step S13, and the control unit 50 sets the amount of water in the washing / dehydrating tub 3 to the amount of water. After adjusting the amount of water so as to increase α _{2, the process proceeds to step S15.}

<Step S14>
If it is determined by the control unit 50 that the set water amount has been cleared in step S9, the process proceeds to step S14, and the control unit 50 adjusts the amount of water in the washing / dehydrating tub 3 to the maximum amount, and then proceeds to step S15. move on.

<Step S15>
The control unit 50 restarts from the rinsing step. As a rinsing step, the control unit 50 supplies a predetermined amount of water to the washing / dehydrating tub 3 and rotates the stirring blade 5 to perform pool rinsing in the same manner as the washing operation in step S5. When the rinsing step is completed, the control unit 50 opens the drain valve 20 to drain the water in the washing / dehydrating tub 3.

<Step S16>
As a dehydration step, the control unit 50 performs final dehydration by integrally rotating the washing and dehydrating tub 3 and the stirring blade 5 at high speed.

(Water amount correction judgment)
The process of determining the amount of water corrected in step S7 described above will be described with reference to FIG.

<Step S101>
In step S101, the control unit 50 determines whether or not the lid 22 is opened after the operation is interrupted.

<Step S102>
If the control unit 50 determines in step S101 that the lid 22 has been opened, the process proceeds to step S102 to detect the amount of first water in the washing / dehydrating tub 3 when the lid 22 is opened. Then, the process proceeds to step S103.

<Step S103>
In step S103, the control unit 50 determines whether or not the lid 22 is closed.

<Step S104>
When the control unit 50 determines in step S103 that the lid 22 is closed, the process proceeds to step S104 to detect the amount of second water in the washing / dehydrating tub 3 when the lid 22 is closed. Then, the process proceeds to step S105.

<Step S105>
In step S105, the control unit 50 compares the first water amount with the second water amount and determines whether or not the water amount has decreased. The control unit 50 determines that the water amount has decreased when the water amount difference obtained by subtracting the second water amount from the first water amount is greater than 0, and when the water amount difference obtained by subtracting the second water amount from the first water amount is 0 or less. , Judge that the amount of water has not decreased.

<Step S106>
If the control unit 50 determines in step S105 that the amount of water has decreased, the process proceeds to step S106, the first correction flag is set to 1, and the process ends.

<Step S107>
If the control unit 50 determines in step S105 that the amount of water has not decreased, the process proceeds to step S107, and the control unit 50 compares the first water amount with the second water amount to determine whether or not the water amount has increased. judge. The control unit 50 determines that the water amount has increased when the water amount difference obtained by subtracting the first water amount from the second water amount is greater than 0, and when the water amount difference obtained by subtracting the first water amount from the second water amount is 0, the control unit 50 determines that the water amount has increased. It is determined that the amount of water has not changed, and the process is terminated.

<Step S108>
If the control unit 50 determines in step S107 that the amount of water has decreased, the process proceeds to step S108, the first correction flag is set to 2, and the process ends.

<Step S109>
If the control unit 50 determines in step S107 that the amount of water has not changed, the process proceeds to step S109, the first correction flag is set to 0, and the process ends.

<Step S110>
If it is determined in step S101 that the lid 22 is not opened by the control unit 50, the process proceeds to step S110, and the control unit 50 determines whether or not the first predetermined time has elapsed after the operation was interrupted. judge. If the control unit 50 determines in step S110 that the first predetermined time has not elapsed, the process proceeds to step S101.

<Step S111>
If the control unit 50 determines in step S103 that the lid 22 is not closed, the process proceeds to step S111 to determine whether or not a second predetermined time has elapsed after the lid 22 was opened. If the control unit 50 determines in step S111 that the second predetermined time has not elapsed, the process proceeds to step S103.

<Step S112>
When the control unit 50 determines in step S110 that the first predetermined time has elapsed, and when the control unit 50 determines in step S111 that the second predetermined time has elapsed, the process proceeds to step S112 and the set water amount is set. Is cleared to end the process.

(When the operation is interrupted during the washing operation of the washing process)
The operation when the operation is interrupted in the middle of the washing operation in the washing step will be described with reference to FIG.

<Step S201>
When the user puts the laundry into the washing / dehydrating tub 3, makes appropriate settings by the operation unit 51 and presses the start key, the control unit 50 starts the washing process in step S201.

<Step S202>
In step S202, the control unit 50 detects the load amount.

<Step S203>
In step S203, the control unit 50 determines the set water amount based on the load amount detected in step S202.

<Step S204>
In step S204, the control unit 50 performs a water supply operation of supplying water to the washing / dehydrating tub 3 based on the set amount of water detected in step S203. Specifically, the control unit 50 opens the water supply valve 16 to supply water to the washing / dehydrating tub 3 to a water level corresponding to the set amount of water.

<Step S205>
In step S205, the control unit 50 starts the cleaning operation. As a cleaning operation, the control unit 50 performs a cleaning operation by rotating the stirring blade 5 in one direction or both directions at a predetermined speed.

<Step S206>
When the user presses the pause key after the cleaning operation is started, in step S206, the control unit 50 interrupts the operation during the cleaning operation in the washing process.

<Step S207>
In step S207, the control unit 50 makes a water amount correction determination. Specifically, the control unit 50 sets the first correction flag to 0, 1, or 2 in the water amount correction determination, or clears the set water amount.

<Step S208>
When the user presses the start key in step S208, the control unit 50 adjusts the amount of water in the washing / dehydrating tub 3 in steps S209 to S219.

<Step S209>
In step S209, the control unit 50 determines whether the set water amount is determined based on the load amount, that is, whether the set water amount is not cleared. Then, the process proceeds to step S210.

<Step S210>
If it is determined in step S209 that the set water amount has been determined by the control unit 50, the process proceeds to step S210, and the control unit 50 determines whether or not the first correction flag is not 0. When the control unit 50 determines in step S210 that the first correction flag is 0, the control unit 50 proceeds to step S220 without changing the amount of water in the washing / dehydrating tub 3.

<Step S211>
If the control unit 50 determines in step S210 that the first correction flag is not 0, the process proceeds to step S211 and the control unit 50 determines the amount of water supply. Specifically, the control unit 50 sets the second correction flag to 1 when the amount of water decreases during the third predetermined time after the washing process is interrupted and then restarted. That is, the control unit 50 corrects the amount of water in the washing / dehydrating tub 3 by the water amount correction determination, and then determines whether or not it is necessary to further replenish the amount of water. The water supply determination will be described in detail later. After that, the process proceeds to step S212.

<Step S212>
In step S212, the control unit 50 determines whether or not the first correction flag is 1.

<Step S213>
If the control unit 50 determines that the first correction flag is 1 in step S212, the process proceeds to step S213, and the control unit 50 determines whether or not the second correction flag is 1.

<Step S214>
If step S213 the second correction flag by the control unit 50 is determined not 1, the routine proceeds to step S214, the control unit 50, after water adjusted to a water washing drying tub 3 to water alpha ₁ decreases , Step S220.

<Step S215>
When the second correction flag by the control unit 50 in step S213 is determined to be 1, the process proceeds to step S215, the control unit 50, and water adjusted to the amount of water the amount of water alpha ₁ reduction in the washing and dewatering tub 3 later, further, after water adjusted to the amount of water replenished to increase the amount of water alpha _3, the process proceeds to step S220.

<Step S216>
If the control unit 50 determines in step S212 that the first correction flag is not 1, the first correction flag is 2, so the process proceeds to step S216, and the control unit 50 determines whether the second correction flag is 1. Judge whether or not.

<Step S217>
Step S216 If the second correction flag by the control unit 50 is determined not 1, the routine proceeds to step S217, after water adjusted to control unit 50 to water water alpha ₂ increased in washing and dewatering tub 3, The process proceeds to step S220.

<Step S218>
When the second correction flag by the control unit 50 in step S216 is determined to be 1, the process proceeds to step S218, the control unit 50, and water adjusted to a water washing drying tub 3 increases water alpha ₂ later, further, after water adjusted to the amount of water replenished to increase the amount of water alpha _3, the process proceeds to step S220.

<Step S219>
If the control unit 50 determines in step S209 that the set amount of water has been cleared, the process proceeds to step S219, and the control unit 50 adjusts the amount of water in the washing / dehydrating tub 3 to the maximum amount, and then moves to step S220. move on.

<Step S220>
The control unit 50 restarts the washing operation in the washing process. When the washing step is completed, the process proceeds to step S221.

<Step S221>
As a rinsing step, the control unit 50 supplies a predetermined amount of water to the washing / dehydrating tub 3 and rotates the stirring blade 5 to perform pool rinsing in the same manner as the washing operation in step S205. When the rinsing step is completed, the control unit 50 opens the drain valve 20 to drain the water in the washing / dehydrating tub 3.

<Step S222>
As a dehydration step, the control unit 50 performs final dehydration by integrally rotating the washing and dehydrating tub 3 and the stirring blade 5 at high speed.

(Water supply judgment)
The process of determining the amount of water supply in step 211 described above will be described with reference to FIG.

<Step S301>
In step S301, the control unit 50 detects the amount of the third water in the washing / dehydrating tub 3 when the washing operation is started. Then, the process proceeds to step S302.

<Step S302>
In step S302, the control unit 50 starts the cleaning operation.

<Step S303>
In step S303, the control unit 50 determines whether or not a third predetermined time has elapsed after the cleaning operation is started. When the control unit 50 determines in step S303 that the third predetermined time has not elapsed, the control unit 50 continues the cleaning operation.

<Step S304>
When the control unit 50 determines in step S303 that the third predetermined time has elapsed, the control unit 50 interrupts the cleaning operation. Then, the process proceeds to step S305.

<Step S305>
In step S305, the control unit 50 detects the amount of the fourth water in the washing / dehydrating tub 3 when the washing operation is interrupted. Then, the process proceeds to step S306.

<Step S306>
In step S306, the control unit 50 compares the third water amount with the fourth water amount and determines whether or not the water amount has decreased. The control unit 50 determines that the water amount has decreased when the water amount difference obtained by subtracting the fourth water amount from the third water amount is greater than 0, and when the water amount difference obtained by subtracting the fourth water amount from the third water amount is 0 or less. , Judge that the amount of water has not decreased. If the control unit 50 determines in step S306 that the amount of water has not decreased, the process ends.

<Step S307>
If the control unit 50 determines in step S306 that the amount of water has decreased, the process proceeds to step S307, the second correction flag is set to 1, and the process ends.

The washing machine 100 of the present embodiment is a washing machine capable of performing a washing step, a rinsing step, and a dehydration step, and is a load corresponding to the amount of laundry put into the washing / dehydrating tub 3 at the start of the washing step. The load amount detecting unit 51, which is a load amount detecting means for detecting the amount, and the set water amount determining means for determining the set water amount to be supplied to the washing / dehydrating tub 3 based on the load amount detected by the load amount detecting unit 51. After the set water amount determination unit 52 and the set water amount determination unit 52 determine the set water amount and start the washing process, the washing process or the rinsing process is interrupted and the lid 22 that opens and closes the laundry inlet 21 When opened and closed, the change in the amount of water between the first amount of water in the washing / dehydrating tub 3 when the lid 22 is opened and the second amount of water in the washing / dehydrating tub 3 when the lid 22 is closed is detected. When the washing step or rinsing step is restarted with the first water amount change detecting unit 53 which is the first water amount change detecting means, the set water amount is corrected based on the water amount change detected by the first water amount change detecting unit 53. It includes a correction unit 55 which is a correction means, and a water amount adjusting unit 56 which is a water amount adjusting means for adjusting the amount of water in the washing / dehydrating tub 3 based on the set water amount after being corrected by the correction unit 55.

As a result, in the washing machine 100 of the present embodiment, when the washing step or the rinsing step is interrupted and then restarted, it is determined at the start of the washing step based on the change in the amount of water in the washing / dehydrating tub 3 after the interruption. The set amount of water is corrected. Therefore, even if a part of the laundry is taken out after the washing process or the rinsing process is interrupted, or the washing process or the rinsing process is restarted after the separately washed laundry is added, the amount of laundry is used. The laundry can be washed or rinsed with an appropriate amount of water.

In the washing machine 100 of the present embodiment, the correction unit 55 reduces the set water amount when the first water amount is larger than the second water amount.

As a result, in the washing machine 100 of the present embodiment, when the amount of water in the washing / dehydrating tub 3 decreases after the washing step or the rinsing step is interrupted, the amount of laundry in the washing / dehydrating tub 3 is smaller than that at the time of interruption. Therefore, it is possible to adjust the amount of water in the washing / dehydrating tub 3 by reducing the set amount of water.

In the washing machine 100 of the present embodiment, the correction unit 55 increases the set water amount when the second water amount is larger than the first water amount.

As a result, in the washing machine 100 of the present embodiment, when the amount of water in the washing / dehydrating tub 3 increases after the washing step or the rinsing step is interrupted, the amount of laundry in the washing / dehydrating tub 3 is larger than that at the time of interruption. Therefore, it is possible to adjust the amount of water in the washing / dehydrating tub 3 by increasing the set amount of water.

In the washing machine 100 of the present embodiment, the correction unit 55 does not change the set water amount when the first water amount is the same as the second water amount.

As a result, in the washing machine 100 of the present embodiment, when the amount of water in the washing / dehydrating tub 3 does not change after the washing step or the rinsing step is interrupted, the amount of laundry in the washing / dehydrating tub 3 is the same as that at the time of interruption. Therefore, it is possible to keep the amount of water in the washing / dehydrating tub 3 unchanged.

In the washing machine 100 of the present embodiment, the set water amount determination unit 52 determines the case where the lid 22 is not opened until the first predetermined time elapses after the washing step or the rinsing step is interrupted, or the lid 22. If the lid 22 is not closed until the second predetermined time elapses from the time when the lid 22 is opened, the set water amount already determined is reset.

As a result, in the washing machine 100 of the present embodiment, when the lid 22 is not opened until the first predetermined time elapses after the washing step or the rinsing step is interrupted, or the lid 22 is opened. If the lid 22 is not closed until the second predetermined time elapses, the set amount of water determined at the start of the washing process is reset because no control is required when restarting the interrupted operation. ..

In the washing machine 100 of the present embodiment, washing is performed when the washing process is restarted when the washing process is interrupted and then restarted, and when the water amount change is detected by the first water amount change detecting unit 53. A second water amount that is a second water amount change detecting means for detecting a change in the amount of water between the third water amount in the dehydration tub 3 and the fourth water amount in the washing / dehydration tub 3 when the washing process is restarted and then interrupted again. The change detection unit 54 is provided, and the correction unit 55 includes a water amount change and a second water amount change detected by the first water amount change detection unit 53 when the washing process is restarted and the third water amount is larger than the fourth water amount. The set water amount is corrected based on the water amount change detected by the detection unit 54.

As a result, in the washing machine 100 of the present embodiment, even if the amount of water in the washing / dehydrating tub 3 changes after the washing process is interrupted, when dry laundry is added, the laundry retains water. It is possible that the amount of water in the washing / dehydrating tub 3 changed due to the inclusion. In that case, if the set water amount determined at the start of the washing process is corrected based on the change in the water amount in the washing / dehydrating tub 3 after the interruption, the set water amount is not corrected to an appropriate level. Therefore, the washing process is restarted without correcting the set amount of water so that the dry laundry contains water, and the washing is performed in consideration of the change in the amount of water in the washing / dehydrating tank 3 after the washing process is restarted. By correcting to the set water amount determined at the start of the process, it is corrected to an appropriate set water amount.

Although the embodiment of the present invention has been described above, the specific configuration of each part is not limited to the above-described embodiment.

For example, in the above embodiment, the operation when the operation is interrupted after the washing operation of the washing step is completed and the operation when the operation is interrupted during the washing operation of the washing step has been described, but the washing step or rinsing has been described. The same applies to the operation when the operation is interrupted at different stages of the process.

In the above embodiment, the case where the pause key is pressed by the user to interrupt the operation has been described, but the same applies to the case where the power key is pressed by the user to interrupt the operation.

In the above embodiment, the washing machine 100 has a display unit, and when the set water amount is corrected, the contents may be displayed on the display unit. Further, the correction of the set water amount may be canceled by a specific operation until a predetermined release time elapses after the content of the corrected set water amount is displayed on the display unit.

3 Washing / dehydrating tub 21 Input port 22 Lid body 50 Control unit 51 Load amount detection unit (load amount detection means)
52 Set water amount determination unit (set water amount determination means)
53 First water volume change detection unit (first water volume change detection means)
54 Second water volume change detection unit (second water volume change detection means)
55 Correction unit (correction means)
56 Water volume adjusting unit (water volume adjusting means)
100 washing machine

Claims (6)

A washing machine capable of performing washing, rinsing and dehydrating processes.
A load amount detecting means for detecting a load amount corresponding to the amount of laundry put into the washing / dehydrating tub at the start of the washing process, and a load amount detecting means.
A set water amount determining means for determining the set water amount to be supplied to the washing / dehydrating tub based on the load amount detected by the load amount detecting means, and
After the set water amount is determined by the set water amount determining means and the washing step is started, when the washing step or the rinsing step is interrupted and the lid for opening and closing the laundry inlet is opened and closed. A first water amount change detecting means for detecting a change in the amount of water between the first amount of water in the washing / dehydrating tub when the lid is opened and the second amount of water in the washing / dehydrating tub when the lid is closed.
When the washing step or the rinsing step is restarted, the correction means for correcting the set water amount based on the water amount change detected by the first water amount change detecting means, and the correction means.
A washing machine including a water amount adjusting means for adjusting the amount of water in the washing / dehydrating tub based on the set amount of water after being corrected by the correction means. The washing machine according to claim 1, wherein the correction means reduces the set water amount when the first water amount is larger than the second water amount. The washing machine according to claim 1 or 2, wherein the correction means increases the set water amount when the second water amount is larger than the first water amount. The washing machine according to any one of claims 1 to 3, wherein the correction means does not change the set water amount when the first water amount is the same as the second water amount. The set water amount determining means is used when the lid is not opened until the first predetermined time elapses after the washing step or the rinsing step is interrupted, or when the lid is opened. 2. The washing machine according to any one of claims 1 to 4, wherein when the lid is not closed until a predetermined time elapses, the set amount of water already determined is reset. When the washing step is interrupted and then restarted, and when the water amount change is detected by the first water amount change detecting means, the third water amount in the washing / dehydrating tub when the washing step is restarted. A second water amount change detecting means for detecting a change in the amount of water with the fourth water amount in the washing / dehydrating tub when the washing process is restarted and then interrupted again is provided.
The correction means is detected by the water amount change detected by the first water amount change detecting means and the second water amount change detecting means when the washing step is restarted and the third water amount is larger than the fourth water amount. The washing machine according to any one of claims 1 to 5, wherein the set amount of water is corrected based on the change in the amount of water.

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