WO2021121000A1

WO2021121000A1 - Washing machine

Info

Publication number: WO2021121000A1
Application number: PCT/CN2020/131545
Authority: WO
Inventors: 辻野圭则
Original assignee: 青岛海尔洗衣机有限公司; Aqua株式会社; 海尔智家股份有限公司
Priority date: 2019-12-20
Filing date: 2020-11-25
Publication date: 2021-06-24
Also published as: CN114829696B; JP2021097846A; CN114829696A

Abstract

The present invention provides a washing machine, comprising: a load measurement unit (51) configured to measure, at the beginning of a cleaning process, the load corresponding to the amount of laundry put into a washing and dewatering tub; a set water volume determination unit (52) configured to determine, on the basis of the load measured by the load measurement unit (51), the set water volume supplied to the washing and dewatering tub; a first water volume change measurement unit (53) configured to measure, when the washing process or the rinsing process is interrupted and a cover that opens and closes a laundry access opening is opened or closed, the water volume change between a first water volume in the washing and dewatering tub when a cover is opened and a second water volume in the washing and dewatering tub when the cover is closed; a correction unit (55) configured to correct the set water volume on the basis of the water volume change measured by the first water volume change measurement unit (53); and a water volume adjustment unit (56) configured to adjust the water volume in the washing and dewatering tub on the basis of the set water volume corrected by the correction unit (55).

Description

washing machine

Technical field

The present invention relates to, for example, a washing machine capable of performing a washing process, a rinsing process, and a spin-drying process.

Background technique

In the case of washing in a washing machine, usually after the laundry is put into the washing and dehydrating tub, it is operated in a washing process, a rinsing process, and a dehydrating process in sequence. When the washing machine starts the washing process, the load amount corresponding to the amount of laundry put into the washing and dehydrating tub is detected, and water is supplied to the washing and dehydrating tub based on the set water amount according to the load. The above-mentioned load amount detection is performed in a state where water is not supplied to the washing and dehydrating tub, so the amount of laundry can be appropriately detected.

In contrast, when water is added to the washing and dehydrating tub when the washing process is started, the amount of laundry cannot be detected, and it is difficult to determine the optimal set water amount. In addition, in the case of starting the rinsing process with water stored in advance after the end of the washing process, it is considered that the rinsing process is performed with the set water amount that has been determined, but it is not clear that it is relative to the laundry that is subjected to the rinsing process. Whether the amount of water is the best set water amount.

For example, when the rinsing process is performed in a state where the amount of water is small relative to the amount of laundry, there is a problem that the laundry is damaged or the rinsing performance is reduced.

Therefore, not as a washing machine that performs a rinsing operation with a larger water level setting in consideration of cloth damage and insufficient rinsing performance, but as a washing machine that seeks to reduce the amount of water used, there are the following washing machines: In this case, when more than a certain amount of water is added at the start of the rinsing operation, it is judged that the washing process has been performed and the amount of laundry has been measured, and the rinse setting water level is set based on the water level at the start of the rinsing operation (For example, Patent Document 1).

However, as a case of starting from the rinsing process, it is considered that a part of the laundry washed in the washing process is taken out or the laundry separately washed is added to restart the rinsing process. In this case, different from the amount of laundry at the start of the washing process, it is not appropriate to set the rinse setting water level based on the water level at the start of the rinse operation.

In addition, in the washing machine of Patent Document 1, it is determined whether more than a certain amount of water is added in the starting state of the rinsing operation, but it is not clear whether the operation is stopped at any point after the washing process, for example, when the washing process is drained. When the operation is stopped in the middle of the operation, it may be less than the final water level of the washing process (appropriate water amount relative to the amount of laundry). In such a case, the problem of damage to the laundry or reduced rinsing performance cannot be eliminated.

Prior art literature

Patent literature

Patent Document 1: Japanese Patent Application Publication No. 2018-79167

Summary of the invention

The problem to be solved by the invention

Therefore, the object of the present invention is to provide a washing machine that can perform washing or rinsing with an appropriate amount of water even when the washing process or the rinsing process is restarted after being interrupted.

Solutions used to solve the problem

That is, the present invention is a washing machine that can perform a washing process, a rinsing process, and a dehydration process, and includes a load detection unit that detects the load corresponding to the amount of laundry put into the washing and dehydration tub at the start of the washing process The set water amount determination unit, based on the load amount detected by the load amount detecting unit, determines the set water amount to be supplied to the washing and dewatering tub; the first water amount change detecting unit is determined by the set water amount determining unit After setting the amount of water and starting the washing process, the washing process or the rinsing process is interrupted and the cover that opens and closes the washing inlet is opened and closed. The water volume change between the first water volume in the washing and dehydration tank and the second water volume in the washing and dehydration tank when the cover is closed is detected; the correction unit, when the cleaning process or the rinsing process is restarted Next, correcting the set water volume based on a change in the water volume detected by the first water volume change detecting unit; and a water volume adjustment unit that adjusts the water volume in the washing and dehydrating tub based on the setting water volume corrected by the correction unit .

In the washing machine of the present invention, it is preferable that the correction unit reduces the set water volume when the first water volume is greater than the second water volume.

In the washing machine of the present invention, it is preferable that the correction unit increases the set water volume when the second water volume is greater than the first water volume.

In the washing machine of the present invention, it is preferable that the correction unit 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, it is preferable that the cover is not opened until the first predetermined time has elapsed after the washing process or the rinsing process is interrupted, or the cover is opened When the cover body is not closed until the second predetermined time has elapsed, the set water amount determining unit resets the set water amount that has been determined.

In the washing machine of the present invention, it is preferable to include: a second water volume change detection unit, in the case where the washing process is restarted after being interrupted, and the first water volume change detection unit detects a water volume change Next, the water volume change between the third water volume in the washing and dehydration tank when the cleaning process is restarted and the fourth water volume in the washing and dehydration tank when the cleaning process is restarted and interrupted again is detected, and the correction When the cleaning process is restarted and the third water volume is greater than the fourth water volume, the unit is based on the water volume change detected by the first water volume change detection unit and the second water volume change detection unit The detected water volume changes are used to correct the set water volume.

Invention effect

In the washing machine of the present invention, in the case where the washing process or the rinsing process is restarted after being interrupted, the set water volume determined at the beginning of the washing process is corrected based on the change of the water volume in the washing and dehydrating tub after the interruption. Therefore, even after the washing process or the rinsing process is interrupted, the washing process or the rinsing process is interrupted and restarted after a part of the laundry is taken out or the separately washed laundry is added, it can be compared to the laundry. The amount of washing or rinsing is carried out with an appropriate amount of water.

In the washing machine of the present invention, when the amount of water in the washing and dewatering tub is reduced after the washing process or the rinsing process is interrupted, it is considered that the amount of laundry in the washing and dewatering tub is less than at the time of interruption, so the set water amount can be reduced. Adjust the amount of water in the washing and dehydration tank.

In the washing machine of the present invention, when the amount of water in the washing and dewatering tub increases after the washing process or the rinsing process is interrupted, it is considered that the amount of laundry in the washing and dewatering tub is more than when it was interrupted, so the set water amount can be increased. Adjust the amount of water in the washing and dehydration tank.

In the washing machine of the present invention, when the amount of water in the washing and dehydrating tub does not change after the washing process or the rinsing process is interrupted, it is considered that the amount of laundry in the washing and dehydrating tub is the same as that at the time of interruption, so the washing and dehydrating tub can not be washed The amount of water inside changes.

In the washing machine of the present invention, after the washing process or the rinsing process is interrupted, the lid 22 is not opened until the first predetermined time elapses, or the lid 22 is opened until the second predetermined time elapses. When the body 22 is not closed, there is no need to perform the control when restarting the interrupted operation, so the set water volume determined at the beginning of the washing process is reset.

In the washing machine of the present invention, even if the amount of water in the washing and dewatering tub changes after the washing process is interrupted, when dry laundry is added, the amount of water in the washing and dewatering tub may change because the laundry contains water. . In this case, when it is corrected to the set water amount determined at the start of the washing process based on the change in the amount of water in the washing and dehydrating tub after the interruption, it is not corrected to an appropriate set water amount. Therefore, the cleaning process is restarted without correcting the set water volume. Taking into account that the dry laundry contains moisture, the change in the amount of water in the washing and dewatering tank after the cleaning process is restarted is corrected to the setting determined at the beginning of the cleaning process. Set the water volume, and then correct it to the appropriate set water volume.

Description of the drawings

Fig. 1 is a longitudinal sectional view showing a schematic configuration of a washing machine 100 according to this embodiment.

Fig. 2 is a control block diagram of the washing machine 100 of Fig. 1.

Fig. 3 is a flowchart showing the flow of the operation when the operation is interrupted after the end of the washing operation of the washing process.

Fig. 4 is a flowchart showing the flow of water volume correction and determination processing.

FIG. 5 is a flowchart showing the flow of the operation when the operation is interrupted in the middle of the washing operation in the washing process.

Fig. 6 is a flowchart showing the flow of the water amount replenishment determination process.

Description of reference signs

3: Washing and dewatering tub; 21: input port; 22: cover; 50: control unit; 51: load detection unit (load detection unit); 52: set water volume determination unit (set water volume determination unit); 53 : First water volume change detection unit (first water volume change detection unit); 54: second water volume change detection unit (second water volume change detection unit); 55: correction unit (correction unit); 56: water volume adjustment unit (water volume adjustment Unit); 100: washing machine.

Detailed ways

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

The washing machine 100 is a vertical washing machine that can perform washing, rinsing, and dehydration processes. The washing machine 100 has an outer box 1, and a bottomed cylindrical outer tub 2 is suspended and supported inside the outer box 1 by a plurality of hanging rods not shown. . The washing and dewatering tub 3 having many water passage holes around it is pivotally supported in the outer tub 2 around a support shaft 4 fixed to the bottom wall thereof. The stirring blade 5 is rotatably provided at the inner bottom of the washing and dewatering tub 3 with the inner shaft 6 inserted into the support shaft 4 as the center.

The rotational power of the motor 7 mounted on the lower surface of the outer tub 2 is transmitted to the support shaft 4 and the inner shaft 6 via a transmission mechanism and a power switching mechanism 14. The transmission mechanism consists of a small pulley 9 fixed to the motor shaft 8 and a V drive belt 10. The large pulley 11 and the like are constituted, and the power switching mechanism 14 includes a clutch mechanism 12 and a torque motor 13.

Mainly during washing and rinsing operations, the clutch mechanism 12 releases the connection between the large pulley 11 and the support shaft 4 in response to the operation of the torque motor 13, and rotates the stirring blade 5 in one or two directions via the inner shaft 6. On the other hand, during the dehydration operation, the clutch mechanism 12 connects the large pulley 11 and the support shaft 4, and the washing and dehydration tub 3 and the stirring blade 5 rotate in one direction integrally.

A water supply pipe 15 connected to an external faucet is arranged behind the upper part of the outer box 1. When the water supply valve 16 is opened, the water introduced through the water supply pipe 15 flows into the water injection port 17 equipped with a detergent container and is injected into the outer tub 2 . On the other hand, a drain port 18 is provided at the bottom of the outer tub 2, and a drain pipe 19 connected to the drain port 18 is opened and closed by a drain valve 20.

The opening and closing action of the drain valve 20 is as follows: when the stirring wing 5 is separated from the washing and dewatering tub 3 and can be rotated independently, the drain valve 20 is closed, and when the stirring wing 5 and the washing and dewatering tub 3 are rotated integrally , The drain valve 20 is opened. In addition, the opening and closing actions of the drain valve 20 can be independent of the operating actions.

The laundry inlet 21 opened on the upper surface of the outer box 1 is provided with a lid 22 that can be opened and closed. A lid opening/closing sensing device 24 is provided in the front of the upper part of the outer box 1.

The operation part 61 provided with various key switches is provided on the side of the input port 21 on the upper surface of the outer box 1, but it is not shown in FIG.

FIG. 2 is a control block diagram of the washing machine 100 of this embodiment. The control unit 50 of the washing machine 100 is shown in FIG. 2, for example, it is composed of a microcomputer or the like, and includes a CPU (central processing unit: central processing unit), and a ROM (read-only memory: read-only memory) that stores programs that control the operation of the washing machine 100 ) And RAM (random access memory: random access memory) for temporarily storing data used when executing the above-mentioned programs. The operation of the washing machine 1 is controlled by the control unit 50.

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

The load amount detection unit 51 detects the load amount corresponding to the amount of laundry put into the washing and dehydrating tub 3 at the start of the washing process. Specifically, the motor 7 is turned on for a short time to rotate the driving stirring blade 5, and then, during the idle rotation period when the motor 7 is turned off, the load detection unit 51 performs a pulse signal synchronization with the rotation of the motor 7 Count, and detect the load by the count value. The greater the load, the greater the resistance to the rotation of the stirring blade 5, and therefore the shorter the duration of the inert rotation.

The set water amount determination unit 52 determines the set water amount to be supplied to the washing and dehydration 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 for multi-level or non-level setting based on 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.

After the first water volume change detection unit 53 determines the set water volume by the set water volume determination unit 52 to start the cleaning process, the cleaning process or the rinsing process is interrupted, and the cover 22 is opened and closed, and then detects the inside of the washing and dewatering tub 3 The amount of water changes.

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

After the washing process or the rinsing process is interrupted and the cover 22 is opened and closed, the first water volume detection unit 53a detects the first water volume in the washing and dehydrating tub 3 when the cover 22 is opened based on the output of the water level sensor 62 .

After the washing process or the rinsing process is interrupted, the second water volume detection unit 53b detects the second water volume in the washing and dehydrating tub 3 when the cover 22 is closed according to the output of the water level sensor 62 when the cover 22 is opened and closed. .

Thus, the first water volume change detection unit 53 detects the slave after the washing process or the rinsing process is interrupted based on the first water volume detected by the first water volume detection unit 53a and the second water volume detected by the second water volume detection unit 53b. The amount of water from when the lid 22 is opened to when the lid 22 is closed changes.

After the cleaning process is interrupted and restarted, when the cover 22 is opened and closed after the cleaning process is interrupted and there is a change in the amount of water in the washing and dehydration tank 3, the second water volume change detection unit 54 detects the washing and dehydration after the cleaning process is restarted. The amount of water in the bucket 3 changes.

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

The third water volume detection unit 54a detects the third water volume in the washing and dehydrating tub 3 when the cleaning process is restarted according to the output of the water level sensor 62 when the cleaning process is restarted after being interrupted.

The fourth water volume detection unit 54b detects the fourth water volume in the washing and dewatering tub 3 when the cleaning process is restarted after the third predetermined time has elapsed and is interrupted again when the cleaning process is restarted after being interrupted. .

Thus, the second water volume change detection unit 54 detects based on the third water volume detected by the third water volume detection unit 54a and the fourth water volume detected by the fourth water volume detection unit 54b after the washing process is interrupted and restarted. The third water volume change at the specified time.

When the washing process or the rinsing process is restarted after being interrupted, the correction unit 55 corrects the set water volume stored in the set water volume determination unit 52 based on the water volume change detected by the first water volume change detection unit 53.

Specifically, when the first water volume change detection unit 53 detects that the water volume has decreased (when the first water volume is greater than the second water volume), the correction unit 55 considers that the amount of laundry in the washing and dehydrating tub 3 has decreased, and therefore Correct the set water volume to reduce the water volume α1. The amount of water α1 (where α1>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.

In addition, the correcting unit 55 considers that the amount of laundry in the washing and dewatering tub 3 has increased when the first water amount change detection unit 53 detects an increase in the water amount (the first water amount is smaller than the second water amount), and therefore will set The constant water volume is corrected to increase the water volume α2. The amount of water α2 (where α2>0) is the amount of water corresponding to the increase in the amount of water detected by the first water amount change detection unit 53.

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

In addition, when the cover 22 is not opened until the first predetermined time elapses after the washing process or the rinsing process is interrupted, and when the cover 22 is not closed from the time the cover 22 is opened until the second predetermined time elapses Next, the correction unit 55 clears the set water volume.

In addition, when the water volume in the washing and dehydrating tub 3 decreases when the cleaning process is restarted after the cleaning process is interrupted, the correction unit 55 corrects the set water volume based on the water volume change detected by the second water volume change detection unit 54.

Specifically, when the second water volume change detection unit 54 detects that the water volume has decreased (the third water volume is greater than the fourth water volume), the correction unit 55 considers that after the washing process is interrupted, it will send the water to the washing and dewatering tub 3 Since dry laundry is put in, the set water volume is corrected to increase the water volume α3. The amount of water α3 (where α3>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 process or the rinsing process is interrupted, the water volume adjustment unit 56 adjusts the water volume in the washing and dehydrating tub 3 based on the set water volume corrected by the correction unit 55.

The control unit 50 is connected with an operation unit 61, a lid opening/closing sensing device 24, and a water level sensor 62. Therefore, in the control section 50, an operation signal is input from the operation section 61, and an on/off signal is input from the lid opening/closing sensing device 24. The on signal from the lid opening/closing sensing device 24 indicates the closed state in which the lid 22 is closed, and the off signal from the lid opening/closing sensing device 24 indicates the open state in which the lid 22 is opened. In addition, an output signal corresponding to the amount of water in the washing and dehydrating tub 3 is input from the water level sensor 62 to the control unit 50.

In addition, 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 controls the motor 7 and the torque motor 13 to perform the washing operation of the washing machine 100. As the washing action of the washing machine 100, a washing process, a rinsing process, and a dehydration process are sequentially performed. During the cleaning process, water supply action, cleaning action, drainage action, and dehydration action are performed. In the rinsing process, water supply action, rinsing action, drainage action, and dehydration action are performed. In addition, the control unit 50 controls the water supply valve 16 and the drain valve 20 to switch the water supply to the washing and dehydration tub 3 or the drain from the washing and dehydration tub 3 to adjust the amount of water in the washing and dehydration tub 3.

The operation unit 61 is an operation panel with a plurality of operation keys. As the operation keys, it includes, for example, a power key, an operation designation unit including a mode key for selecting an operation mode, etc., and an instruction to start and pause the washing operation. Pause key etc. In the following description, sometimes the start/pause key is called the start key when instructing the start of the washing stroke, and the pause key when instructing the pause of the washing stroke.

(When the operation is interrupted after the cleaning action of the cleaning process is completed)

The operation in the case where the operation is interrupted after the end of the cleaning operation of the cleaning process will be described based on FIG. 3.

When the user puts the laundry into the washing and dehydrating tub 3, and presses the start key according to the appropriate setting of the operation unit 61, the control unit 50 starts the washing process in step S1.

In step S2, the control unit 50 performs load detection.

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

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

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

In the case where the user presses the pause key after the end of the cleaning operation, in step S6, the control unit 50 interrupts the operation of the cleaning process.

In step S7, the control unit 50 performs a water volume correction determination. Specifically, the control unit 50 sets the first correction flag to any one of 0, 1, 2 or clears the set water amount based on the change in the amount of water in the washing and dewatering tub 3. The water amount correction determination will be described in detail below.

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

In step S9, the control unit 50 determines whether the set water amount is determined based on the load amount, that is, it determines whether the set water amount has not been cleared. Then, it proceeds to step S10.

When the control unit 50 determines in step S9 that the set water amount has been determined, the process proceeds to step S10, and the control unit 50 determines whether the first correction flag is zero. When the control unit 50 determines that the first correction flag is 0 in step S10, the control unit 50 does not change the amount of water in the washing and dehydrating tub 3, and proceeds to step S15.

If it is determined by the control unit 50 that the first correction flag is not 0 in step S10, the process proceeds to step S11, and the control unit 50 determines whether the first correction flag is 1.

When the control unit 50 determines that the first correction flag is 1 in step S11, the process proceeds to step S12, and the control unit 50 adjusts the water volume in the washing and dehydrating tub 3 to reduce the water volume α1, and then proceeds to step S15.

In step S11, when the control unit 50 determines that the first correction flag is not 1, the first correction flag is 2, so it proceeds to step S13. The control unit 50 increases the amount of water in the washing and dehydrating tank 3 by the amount of water α2. The water volume is adjusted in this way, and then the process proceeds to step S15.

If it is determined in step S9 that the set water volume has been removed by the control unit 50, the process proceeds to step S14, the control unit 50 adjusts the water volume in the washing and dehydrating tub 3 to the maximum water volume, and then proceeds to step S15.

The control section 50 restarts the rinsing process. As the rinsing process, the control unit 50 performs storage rinsing by performing a predetermined amount of water supply in the washing and dehydrating tank 3, and rotating the stirring blade 5 in the same manner as the washing operation in step S5. When the rinsing process ends, the control unit 50 opens the drain valve 20 to drain the water in the washing and dehydrating tub 3.

As a dehydration process, the control unit 50 performs final dehydration by rotating the washing and dehydration tub 3 and the stirring blade 5 at a high speed integrally.

(Judgment of water volume correction)

The processing of the above-mentioned water amount correction determination in step S7 will be described based on FIG. 4.

In step S101, the control unit 50 determines whether the lid 22 is opened after the operation is interrupted.

When the control unit 50 determines in step S101 that the lid 22 is opened, the process proceeds to step S102 to detect the first amount of water in the washing and dehydrating tub 3 when the lid 22 is opened. Then, it proceeds to step S103.

In step S103, the control unit 50 determines whether the lid 22 is closed.

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

In step S105, the control unit 50 compares the first water volume with the second water volume to determine whether the water volume has decreased. The control unit 50 determines that the water volume has decreased when the water volume difference of the first water volume minus the second water volume is greater than 0, and determines that the water volume has not decreased when the water volume difference of the first water volume minus the second water volume is 0 or less .

If it is determined by the control unit 50 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.

If it is determined by the control unit 50 that the water volume has not decreased in step S105, the process proceeds to step S107, and the control unit 50 compares the first water volume with the second water volume to determine whether the water volume has increased. The control unit 50 determines that the water volume has increased when the water volume difference of the second water volume minus the first water volume is greater than 0, and determines that the water volume has not changed when the water volume difference of the second water volume minus the first water volume is 0. End processing.

If it is determined by the control unit 50 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.

If it is determined by the control unit 50 in step S107 that the water volume has not changed, the process proceeds to step S109, the first correction flag is set to 0, and the process ends.

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

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 the second predetermined time has elapsed after the lid 22 is opened. If it is determined by the control unit 50 in step S111 that the second predetermined time has not elapsed, the process proceeds to step S103.

If it is determined by the control unit 50 that the first predetermined time has elapsed in step S110 and if it is determined that the second predetermined time has elapsed by the control unit 50 in step S111, the process proceeds to step S112, the set water volume is cleared, and the end deal with.

(When the operation is interrupted in the middle of the cleaning action in the cleaning process)

The operation in the case where the operation is interrupted in the middle of the cleaning operation in the cleaning process will be described based on FIG. 5.

The user puts the laundry into the washing and dehydrating tub 3, and when the operation unit 51 makes appropriate settings and presses the start key, in step S201, the control unit 50 starts the washing process.

In step S202, the control unit 50 performs load detection.

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

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

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

In the case where the user presses the pause key after the start of the washing operation, in step S206, the control unit 50 interrupts the operation in the middle of the washing operation in the washing process.

In step S207, the control unit 50 performs a water volume correction determination. Specifically, the control unit 50 sets the first correction flag to any one of 0, 1, and 2 or clears the set water amount in the water amount correction determination.

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

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 has not been cleared. Then, it proceeds to step S210.

When the control unit 50 determines in step S209 that the set water amount is confirmed, the process proceeds to step S210, and the control unit 50 determines whether the first correction flag is 0. If the control unit 50 determines that the first correction flag is 0 in step S210, the control unit 50 does not change the amount of water in the washing and dehydrating tub 3, and proceeds to step S220.

If it is determined by the control unit 50 that the first correction flag is not 0 in step S210, the process proceeds to step S211, and the control unit 50 performs a water amount replenishment determination. Specifically, the control unit 50 sets the second correction flag to 1 when the amount of water decreases in the third predetermined time after the cleaning process is restarted after the interruption. That is, the control unit 50 determines whether or not the water volume needs to be replenished after the water volume in the washing and dehydrating tub 3 is corrected by the water volume correction determination. The water replenishment determination will be described in detail below. Then, it proceeds to step S212.

In step S212, the control unit 50 determines whether the first correction flag is 1.

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 the second correction flag is 1.

In step S213, if the control unit 50 determines that the second correction flag is not 1, then it proceeds to step S214. The control unit 50 adjusts the water volume in the washing and dehydrating tub 3 to reduce the water volume α1, and then proceeds to step S214. S220.

If the control unit 50 determines that the second correction flag is 1 in step S213, the process proceeds to step S215, where the control unit 50 adjusts the amount of water in the washing and dehydration tub 3 to reduce the water amount α1, and then further increases the water amount. After the amount of water is replenished by the method of α3 and the amount of water is adjusted, the process proceeds to step S220.

If the control unit 50 determines in step S212 that the first correction flag is not 1, the first correction flag is 2, and therefore, the process proceeds to step S216, and the control unit 50 determines whether the second correction flag is 1.

In step S216, if the control unit 50 determines that the second correction flag is not 1, the process proceeds to step S217, and the control unit 50 adjusts the water volume in the washing and dehydrating tub 3 by increasing the water volume α2, and then proceeds to step S220 .

In step S216, when the control unit 50 determines that the second correction flag is 1, the process proceeds to step S218, where the control unit 50 adjusts the amount of water in the washing and dehydrating tub 3 by increasing the water amount α2, and then further increases the water amount. After the amount of water is supplemented by the method of α3 and the amount of water is adjusted, the process proceeds to step S220.

When the control unit 50 determines in step S209 that the set water volume is cleared, the process proceeds to step S219, and the control unit 50 adjusts the water volume in the washing and dehydrating tub 3 to the maximum water volume, and then proceeds to step S220.

The control unit 50 restarts the cleaning action of the cleaning process. When the cleaning process ends, step S221 is entered.

As a rinsing process, the control unit 50 performs storage rinsing by performing a predetermined amount of water supply in the washing and dehydrating tub 3, and rotating the stirring blade 5 in the same manner as the washing operation in step S205. When the rinsing process ends, the control unit 50 opens the drain valve 20 to drain the water in the washing and dehydrating tub 3.

As a dehydration process, the control unit 50 performs the final dehydration by rotating the washing and dehydration tub 3 and the stirring blade 5 integrally at a high speed.

(Judgment of water replenishment)

Based on FIG. 6, the processing of the water amount replenishment determination in step 211 described above will be described.

In step S301, the control unit 50 detects the third amount of water in the washing and dehydrating tub 3 when the washing operation is started. Then, it proceeds to step S302.

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

In step S303, the control unit 50 determines whether a third predetermined time has elapsed after the start of the washing operation. If the control unit 50 determines in step S303 that the third predetermined time has not elapsed, the control unit 50 continues the cleaning operation.

When the control unit 50 determines in step S303 that the third predetermined time has passed, the control unit 50 interrupts the cleaning operation. Then, it proceeds to step S305.

In step S305, the control unit 50 detects the fourth amount of water in the washing and dehydrating tub 3 when the washing operation is interrupted. Then, it proceeds to step S306.

In step S306, the control unit 50 compares the third water volume with the fourth water volume to determine whether the water volume has decreased. The control unit 50 determines that the water volume has decreased when the water volume difference of the third water volume minus the fourth water volume is greater than 0, and determines that the water volume has not decreased when the water volume difference of the third water volume minus the fourth water volume is 0 or less . If it is determined by the control unit 50 in step S306 that the amount of water has not decreased, the process ends.

If it is determined by the control unit 50 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 this embodiment is a washing machine capable of performing a washing process, a rinsing process, and a spin-drying process, and includes a load detection unit 51 as a load detection unit, which detects and puts into the washing and spin-drying tub 3 at the beginning of the washing process. The amount of load corresponding to the amount of laundry; the set water amount determining unit 52, which is a set water amount determining unit, determines the set amount of water supplied to the washing and dehydrating tub 3 based on the load amount detected by the load amount detecting unit 51; The first water volume change detection unit 53 of a water volume change detection unit determines the set water volume by the set water volume determination unit 52 to start the washing process, the washing process or the rinsing process is interrupted and the laundry inlet 21 is opened and closed. When the cover 22 is opened and closed, the water volume change between the first water volume in the washing and dehydration tank 3 when the cover 22 is opened and the second water volume in the washing and dehydration tank 3 when the cover 22 is closed is performed. Detection; the correction unit 55 as a correction unit, in the case of restarting the washing process or the rinsing process, correct the set water volume based on the water volume change detected by the first water volume change detection unit 53; and the water volume adjustment as a water volume adjustment unit The section 56 adjusts the amount of water in the washing and dehydrating tub 3 based on the set water amount corrected by the correction section 55.

Therefore, in the washing machine 100 of this embodiment, in the case where the washing process or the rinsing process is interrupted and then restarted, the setting determined at the start of the washing process is corrected based on the change in the amount of water in the washing and spinning tub 3 after the interruption. The amount of water. Therefore, even after the washing process or the rinsing process is interrupted, the washing process or the rinsing process is restarted after a part of the laundry is taken out or the separately washed laundry is added, the amount of the laundry can be adjusted appropriately. The amount of water used for washing or rinsing the laundry.

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

Therefore, in the washing machine 100 of the present embodiment, when the amount of water in the washing and dehydrating tub 3 is reduced after the washing process or the rinsing process is interrupted, it is considered that the amount of laundry in the washing and dehydrating tub 3 is less than that at the time of interruption. The set water volume can be reduced to adjust the water volume in the washing and dewatering tank 3.

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

Therefore, in the washing machine 100 of the present embodiment, when the amount of water in the washing and dehydrating tub 3 increases after the washing process or the rinsing process is interrupted, it is considered that the amount of laundry in the washing and dehydrating tub 3 is greater than that at the time of interruption. The set water volume can be increased to adjust the water volume in the washing and dewatering tank 3.

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

Therefore, in the washing machine 100 of the present embodiment, when the amount of water in the washing and dehydrating tub 3 does not change after the washing process or the rinsing process is interrupted, it is considered that the amount of laundry in the washing and dehydrating tub 3 is the same as when it was interrupted. Therefore, the amount of water in the washing and dewatering tank 3 can not be changed.

In the washing machine 100 of the present embodiment, the lid 22 is not opened until the first predetermined time elapses after the washing process or the rinsing process is interrupted, or when the lid 22 is opened until the second predetermined time elapses When the lid 22 is not closed, the set water amount determination unit 52 resets the set water amount that has been determined.

Therefore, in the washing machine 100 of the present embodiment, the lid 22 is not opened until the first predetermined time elapses after the washing process or the rinsing process is interrupted, or when the lid 22 is opened until the first predetermined time elapses. 2. If the lid 22 has not been closed by the predetermined time, there is no need to perform the control when restarting the interrupted operation, so the set water volume determined at the beginning of the cleaning process is reset.

In the washing machine 100 of this embodiment, the second water volume change detection unit 54 as the second water volume change detection unit is provided, and when the washing process is restarted after being interrupted, the first water volume change detection unit 53 detects When the water volume changes, detect and correct the water volume change between the third water volume in the washing and dehydration tank 3 when the cleaning process is restarted and the fourth water volume in the washing and dehydration tank 3 when the cleaning process is restarted and interrupted again. When the cleaning process is restarted and the third water volume is larger than the fourth water volume, the part 55 corrects based on the water volume change detected by the first water volume change detection part 53 and the water volume change detected by the second water volume change detection part 54 Set the water volume.

Therefore, in the washing machine 100 of the present embodiment, even if the amount of water in the washing and dehydrating tub 3 changes after the washing process is interrupted, when dry laundry is added, the laundry may contain moisture. The amount of water in the dehydration tank 3 changes. In this case, when it is corrected to the set water amount determined at the start of the washing process based on the change in the amount of water in the washing and dehydrating tub 3 after the interruption, it is not corrected to an appropriate set water amount. Therefore, the cleaning process is restarted without correcting the set water volume. Taking into account that the dry laundry contains moisture, the change in the amount of water in the washing and dehydrating tank 3 after the cleaning process is restarted is corrected to be determined at the beginning of the cleaning process Set the water volume, thereby correcting to the appropriate setting water volume.

As mentioned above, although the embodiment of this invention was described, the specific structure of each part is not limited to the above-mentioned embodiment.

For example, in the above-mentioned embodiment, the operation is described when the operation is interrupted after the end of the cleaning operation in the cleaning process and when the operation is interrupted in the middle of the cleaning operation in the cleaning process, but for the operation during the cleaning process or when the operation is interrupted during the cleaning process. The actions when different stages of the rinsing process are interrupted are also the same.

In the above-mentioned embodiment, the case where the operation is interrupted due to the user pressing the pause key has been described, and the same applies to the case where the operation is interrupted due to the user pressing the power key.

In the above-mentioned embodiment, the washing machine 100 may have a display unit, and when the set water amount is corrected, the content may be displayed on the display unit. In addition, after the content of the correction of the set water amount is displayed on the display unit, the correction of the set water amount can be canceled by a specific operation until the predetermined cancellation time elapses.

Claims

A washing machine capable of implementing a cleaning process, a rinsing process, and a dehydration process, and is characterized in that it has:

A load detection unit, which detects the load corresponding to the amount of laundry put into the washing and dewatering tub at the beginning of the cleaning process;

A set water amount determining unit, which determines a set water amount for supplying water to the washing and dehydrating tub based on the load amount detected by the load amount detecting unit;

The first water amount change detection unit, after the set water amount is determined by the set water amount determining unit to start the washing process, the washing process or the rinsing process is interrupted and the cover of the laundry input port is opened and closed When the body is opened and closed, detecting the water volume change between the first water volume in the washing and dehydrating tub when the cover is opened and the second water volume in the washing and dehydrating tub when the cover is closed;

A correction unit, in the case of restarting the washing process or the rinsing process, correcting the set water volume based on the water volume change detected by the first water volume change detecting unit; and

The water volume adjustment unit adjusts the water volume in the washing and dehydrating tub based on the set water volume corrected by the correction unit.
The washing machine according to claim 1, wherein:

The correction unit reduces the set water volume when the first water volume is greater than the second water volume.
The washing machine according to claim 1 or 2, characterized in that:

The correction unit increases the set water volume when the second water volume is greater than the first water volume.
The washing machine according to any one of claims 1 to 3, wherein:

The correction unit does not change the set water volume when the first water volume is the same as the second water volume.
The washing machine according to any one of claims 1 to 4, characterized in that:

After the washing process or the rinsing process is interrupted, the cover is not opened until the first predetermined time elapses, or from when the cover is opened until the second predetermined time elapses. When the cover is not closed, the set water amount determining unit resets the set water amount that has been determined.
The washing machine according to any one of claims 1 to 5, characterized by comprising:

The second water volume change detection unit, when the washing process is interrupted and restarted, and the first water volume change detection unit detects a water volume change, performs washing and dehydration when the washing process is restarted The water volume change between the third water volume in the barrel and the fourth water volume in the washing and dehydrating barrel when the cleaning process is restarted and interrupted again is detected,

When the cleaning process is restarted by the correction unit and the third water volume is greater than the fourth water volume, the correction unit is based on the water volume change detected by the first water volume change detection unit and the second water volume The set water amount is corrected by the change in the amount of water detected by the change detection unit.