JP4987829B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine that improves the start-up of a control device when a power failure is restored.

  Conventionally, a washing machine described in Patent Document 1 and a washing machine described in Patent Document 2 are known as washing machines that have taken measures at the time of power failure and recovery from power failure. In the washing machine described in Patent Document 1, an operation control circuit is connected to the power plug via the power supply device, and the operation control device detects a power interruption (power failure) during the washing machine operation, and the operation control circuit The power supply is temporarily held, and the operation control circuit stores the current operation state in the nonvolatile memory. After that, when the user operates the start / pause switch and the power-on switch, the washing machine is operated. It is made to resume from the state before power-off.

Moreover, in the washing machine described in Patent Document 2, when the main control unit is connected to the commercial power supply (primary power) via the uninterruptible power supply apparatus and the apparatus power supply apparatus, the commercial power supply is shut off. The main control unit is automatically stopped according to a predetermined procedure, and the main control unit is automatically started when the supply of commercial power is resumed.
Japanese Patent Laid-Open No. 7-275561 JP-A-6-282360

  In Patent Document 1, in order to detect a power failure and cause the operation control circuit to execute storage control to the nonvolatile memory, a power failure detection means is required, and a power source for the operation control circuit to perform memory control from the occurrence of the power failure is provided. There is a need for power holding means for keeping, and there is a problem that even if the power is restored, unless the user performs a predetermined switch operation, the operation is not resumed and the operation resumption is delayed.

  In the device described in Patent Document 2, the main control unit is automatically started up when the supply of commercial power is resumed. However, the main control unit is always activated even when normal operation ends or the power is turned off. There is a problem in that the power is input and the standby operation state is entered, resulting in an increase in power consumption. In addition, the operation progress status and operation details at the time of a power failure are not stored, and the washing machine operation cannot be resumed from the state before the power is shut off.

  The present invention has been made in view of the above circumstances, and the purpose thereof is that the control device does not enter a standby operation state in the operation stop state after the end of the washing operation, and the power failure detection means and the power holding means are provided. An object of the present invention is to provide a washing machine which is unnecessary and can automatically restart the washing machine operation from the state at the time of the power failure without waiting for the user's operation when the power failure is restored.

  According to the first aspect of the present invention, there is provided a control device powered by a power supply plug via a control power supply circuit, a non-volatile memory connected to or provided in the control device, and a power-off command operated by a user. And a power-off command generating means for inputting the power to the control device, and the control device has a function as a washing operation control means for performing a washing operation by drivingly controlling a washing machine motor, a water supply valve, and a drain valve. When the washing operation is started, the progress status and the operation content are stored in the nonvolatile memory at a predetermined timing, and when the washing operation is normally finished or the power-off command generating means inputs the power-off command. It functions as a storage control means that clears the stored contents of the nonvolatile memory when the power is supplied, and further reads the stored contents of the nonvolatile memory when the power is supplied. And when the stored contents of the progress status and operation contents remain, the power supply plug and the control power supply circuit have a function as a power failure recovery operation restarting means for restarting the washing operation based on the stored contents. The energizing path is closed by the user's operation and the closed state is maintained after the closing, and the washing operation is normally completed or the power-off command is generated by the power-off command generating means. The present invention is characterized in that a switch device for opening the energization path is provided based on the above.

  In the first aspect of the present invention, the energizing path between the power plug and the control power circuit is closed by the user's operation, and the closed state is maintained after the closing, and the washing operation is performed. Since the switch device for opening the energization path is provided based on the normal termination of the power or the power-off command generation means is generated by the power-off command generating means, the energization path is opened in the washing operation end state to the control device When the power supply is cut off and the operation is stopped after the washing operation is completed, the control device does not enter the standby operation state, and the power consumption can be suppressed. Further, when the washing operation is started, the control device stores the progress status and the operation content in the nonvolatile memory at a predetermined timing, and when the washing operation is normally finished or when the power-off command generation means is turned off. Since the content stored in the nonvolatile memory is cleared when a command is input, the washing operation is terminated when the washing operation ends normally, or when the power-off command is not input by the power-off command generating means, that is, the power failure is terminated. Then, the progress of the washing operation and the details of the operation are stored in the nonvolatile memory.

Accordingly, it is possible to store the progress of the washing operation and the operation details at the time of a power failure without providing a power failure detection means and a power supply holding means.
Further, the control device reads the stored contents of the non-volatile memory when the power is supplied, and resumes the washing operation based on the stored contents when the stored contents regarding the progress status and the operating contents remain. After power failure recovery, it can be resumed from the power failure state.

Furthermore, since the above-described switch device is provided, when the power failure occurs, the energization path remains closed, and when the power failure returns, the control power circuit is automatically supplied with power, and therefore the control device is also automatically operated. The control power is supplied.
Therefore, when the power failure is restored, the washing machine operation can be automatically resumed from the power failure state without waiting for the user's operation.

  The present invention does not cause the control device to enter a standby operation state in the operation stop state after the washing operation is completed, and does not require the power failure detection means and the power holding means, and waits for the user's operation when the power failure is restored. Without having to, the washing machine operation can be automatically resumed from the power failure state.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, FIG. 2 shows the overall configuration of a washing machine, in particular, a vertical washing machine. An outer box 1 that is an outer shell includes a base 1a at the bottom and a box body 1b that is placed and coupled thereto. And a top cover 1c attached to the box body 1b. The top cover 1c is provided with a washing machine lid 1d that can be opened and closed.
Inside the outer box 1, a water tank 2 is elastically supported by an elastic suspension mechanism 3 mainly composed of a plurality of suspension rods 3 a (only one is shown). Is provided with a rotating tub 4.

  The rotary tank 4 has a basket shape having a large number of dewatering holes 5 (only a part of which is shown) in the entire peripheral side wall, and a liquid-filled rotary balancer 6 is attached to the upper edge. Inside the rotating tub 4, a stirring body 7 is disposed at the bottom, and further, a washing machine motor 8 is disposed from the bottom of the water tub 2 to the outer lower portion. The washing machine motor 8 is composed of, for example, an outer rotor type DC brushless motor. Although not shown, a clutch mechanism is built inside the washing machine motor 8, and the rotating tub 4 is stopped during washing (washing and rinsing) during operation, so that the stirring body 7 is directly and alternately alternately in both forward and reverse directions. The rotating tank 4 is directly rotated in one direction together with the stirring body 7 during dehydration.

  Further, a drain port 9 is provided at the bottom of the water tank 2, and the drainage port 10 and the drain hose 11 drain water from the drain port 9. In addition, an air trap 12 for detecting a water level is provided in parallel with the drain port 9, and an air tube 13 is connected to the air trap 12.

  FIG. 3 shows the operation panel 14 in a specific display state to be described later. The operation panel 14 is provided, for example, at a front portion of the top cover 1c. The operation panel 14 includes a power-on switch including an automatic return type push switch of a switch device 15 (see FIG. 1, which will be described later). 15A and a power-off switch 16 composed of an automatic return type push switch as a power-off command generating means are provided. Further, the operation panel 14 has a power failure indicator 17 for indicating that a power failure has occurred, a reservation switch 18 for setting an operation reservation, a reservation indicator 19 for displaying an operation reservation setting, Remaining time indicator 20 for displaying the remaining time (reservation waiting time) from the time of reservation to the start of operation, the wind drying switch 21 for setting the wind drying, and the wind drying display for displaying the setting of the wind drying A vessel 22 is provided.

  Furthermore, the operation panel 14 includes a course switch 23 for setting a driving course, a standard display for displaying the driving setting course, a strong washing, a rinsing, a resting, a blanket, a tank washing course display 24- 29, a start switch 30 for starting operation, a water level switch 31 for setting a water level, water level indicators 32 to 35 for displaying a set water level, a washing switch 36 for setting a washing process, a setting time for washing Washing time indicator 37 for displaying rinsing, rinsing switch 38 for setting the rinsing stroke, rinsing frequency indicator 39 for displaying the number of times of rinsing, irrigation rinsing indicator 40 for indicating the setting of rinsing water, dehydration stroke A dehydration switch 41 for setting the dehydration time and a dehydration time indicator 42 for displaying the set time for dehydration are provided. In addition, LED is used for the above-mentioned various displays.

  On the other hand, FIG. 1 shows an electrical configuration, and the control device 43 is composed of, for example, a microcomputer (including a CPU, ROM, RAM, etc.) disposed inside the top cover 1c. By executing a program stored in advance, it functions as a washing operation control means that controls the overall operation of the washing machine, a storage control means that will be described later, a power failure recovery operation restarting means, and a latching relay control means.

  One power supply terminal of a power plug 44 connected to a power outlet (not shown) connected to a commercial AC power supply is connected to one input terminal of the control power supply circuit 45, and the switch device 15 is connected to the other power supply terminal. To the other input terminal of the control power circuit 45. Both output terminals of the control power circuit 45 are connected to the power input terminal of the control device 43. As a result, the switch device 15 is provided in the energization path 44 a among the energization paths 44 a and 44 b between the power plug 44 and the control power circuit 45.

  The switch device 15 includes the power switch 15A, a latching relay 15B, an on coil 15C, and an off coil 15D. The power-on switch 15A is an automatic return push switch that is turned on manually to close the energization path 44a. The latching relay 15B is connected in parallel to the power-on switch 15A and is closed by energizing the on coil 15C. After the closing, the latching relay 15B maintains the closed state even if the on coil 15C is disconnected, and is turned off. When the coil 15D is energized, it opens. Accordingly, the latching relay 15B remains closed unless the off coil 15D is energized.

A latching relay drive circuit 46 is provided that controls opening and closing of the latching relay 15B by controlling the on / off coil 15C and the off coil 15D.
The latching relay drive circuit 46 includes an NPN transistor 47 as a switching element for turning on and off the on-coil 15C, and a detection circuit 48 for detecting closing (turning on by the user) of the power-off switch 16. And an NPN transistor 49 as a switching element for turning on and off the off coil 15C.

  The on coil 15C and the transistor 47 are connected in series between the DC power source Vd and GND. A latch signal Sa (transistor on signal) is supplied from the control device 43 to the base of the transistor 47. The detection circuit 48 connects the voltage dividing resistors 48a and 48b between the DC power supply Vd and GND, and connects the power-off switch 16 in parallel with the upper voltage dividing resistor 48a. A noise absorbing capacitor 48c is connected in parallel with the piezoresistor 48b. The potential at the connection point between the voltage dividing resistors 48a and 48b is an on / off command for the power-off switch 16, and in particular, the potential when the power-off switch 16 is turned on is used as the power-off command Sb. 43.

The off coil 15D and the transistor 49 are connected in series between the DC power supply Vd and GND. A latch release signal Sc (transistor on signal) is supplied from the control device 43 to the base of the transistor 49.
The control device 43 includes the switch group 50 (which includes the switches 21, 23, 30, 36, 38, and 41), the display group 51 (which includes the display units 17, 19, 20, 22, 32 to 35, 37, 39, 40, 42), a washing machine lid opening / closing sensor 52, a rotation sensor 53 for detecting the rotation speed of the washing machine motor 8, and a water level in the water tank 2. A water level sensor 54 and a nonvolatile memory 55 are connected.

  Further, the control device 43 includes a drive circuit 8A for driving the washing machine motor 8, a drive circuit 10A for driving the drain valve 10, and a drive circuit for driving the water supply valve 56 for supplying water into the water tank 2. 56A is connected. The drive circuits 8A, 10A, and 56A are supplied with commercial AC power by closing the switch device 15. A DC power supply may be supplied from the control power supply circuit 45 to the drive circuit 10A of the drain valve 10 and the drive circuit 56A of the water supply valve 56.

The nonvolatile memory 55 is composed of, for example, an EEPROM. The nonvolatile memory 55 may be included in the control device 43.
The function of the control device 43 as a washing operation control means is to execute a washing operation by controlling the washing machine motor 8, the water supply valve 56, and the drain valve 10 by executing an operation control program stored in advance. In this case, there are various courses as the washing operation course. For example, “standard course”, “standard course with reservation setting”, and “standard course with extraordinary” will be schematically described.

  As shown in FIG. 4, the “standard course” includes a laundry amount detection process, a water supply process, a washing process, a draining process, a dehydration process, a shower rinsing process, a dehydration process, a shower rinsing process, a dehydration process, and a water supply process. It is a course in which the process, final rinse process, drainage process, and final dehydration process are performed in order. The storage timing of the driving progress at this time is T1 (immediately before the laundry amount detection process), T2 (after the laundry amount detection process and before the water supply process), T3 (after the washing process and before the drainage process), T4 (dehydration) After 1 stroke and 1 shower before rinse), T5 (after 2 dehydration and before 2 shower rinse), T6 (after 3 dehydration and before water supply), T7 (after final rinse) It is before the drainage process) and T8 (immediately after the final rinse process).

At timing T1, a progress status storage parameter “1” is stored. This parameter “1” means that the progress status is before or during the detection of the laundry amount, and the restart of operation is from the laundry amount detection process. Means.
At timing T2, a progress status storage parameter “3” is stored, and this parameter “3” means that the progress status is after the laundry amount detection process and in the middle of the water supply process or in the process of washing. Means from the water supply process.

At timing T3, a progress status storage parameter “4” is stored. This parameter “4” means that the progress status is after the washing process and during the drainage process or during the dehydration process. Do from the drainage process.
At timing T4, a progress status storage parameter “5” is stored, and this parameter “5” means that the progress status is after the first dehydration stroke and during the shower rinsing one stroke or the second dehydration stroke. Resuming operation means starting from the first shower rinse.

At timing T5, a progress status storage parameter “6” is stored, and this parameter “6” means that the progress status is after the dehydration 2 stroke and during the shower rinsing 2 stroke or the dehydration 3 stroke. Resuming operation means starting from the second shower rinse.
At timing T6, a progress status storage parameter “7” is stored, and this parameter “7” means that the progress status is after the dehydration process 3 and is in the middle of the water supply process or in the final rinse process. Means from the water supply process.

At timing T7, a progress status storage parameter “8” is stored, and this parameter “8” means that the progress status is after the final rinsing process and in the middle of the drainage process or the final dewatering process, and the operation is resumed. Means from the drainage stroke.
At timing T8, the washing operation has been completed normally. At this timing T8, the stored contents so far are cleared and “0” is stored as the progress status storage parameter. This parameter “0” means that the stored contents have been cleared.

Even when the power-off switch 16 is turned on during the washing operation described above, the control device 43 clears the stored contents so far and stores the progress status storage parameter “0”.
The “standard course with reservation setting” is as shown in FIG. 5 and is different in that a reservation waiting process is added between the laundry amount detection process and the water supply process of the “standard course”. This reservation standby process is set so that the reservation switch 18 starts the operation (operation from the water supply process) after the user's desired time.
The driving progress storage timings in the “standard course with reservation setting” are T1, Ta, Tb, T3, T4, T5, T6, T7, and T8. The “standard course” is replaced with the timing T2. The difference is that timings Ta and Tb are added.

  The timing Ta is after the laundry amount detection process and before the start of the reservation standby process, and stores the progress status storage parameter “3”. The parameter “3” indicates that the progress status is after the laundry amount detection process. This means that it is in the middle of a water supply stroke or in the middle of a wash stroke, and restarting the operation means that the reservation standby stroke is omitted and that it is from the water supply stroke. The reason is that performing the reservation waiting process again when restarting the operation may increase the waiting time.

  The timing Tb is after the end of the reservation standby process and before the start of the water supply process, and stores the progress status storage parameter “3”. The parameter “3” indicates that the progress status is after the laundry amount detection process. It means that it is in the middle of the water supply process or the washing process, and the restart of operation means that it is from the water supply process by omitting the reservation standby process. The reason is that performing the reservation waiting process again when restarting the operation may increase the waiting time.

  The “standard course with extraordinary” is different from the “standard course” in that an extra extra process is added after the water supply process. The storage timing of the driving progress status in the “standard course with extraordinary” is T1, T2, Tc, T3, T4, T5, T6, T7, T8. The “standard course” is the timing at the timing T2. The stored contents are different and the point that the timing Tc is added is different. The timing T2 is after the end of the laundry amount detection process and before the water supply process, and stores the progress status storage parameter “2”. This parameter “2” means that the progress is after the laundry amount detection process and is in the middle of the water supply process or in the process of adding water, and that the operation restart is from the water supply process.

  Further, the timing Tc is after the putting-in process and after the washing process is started, and the progress status storage parameter “3” is stored. The parameter “3” indicates that the progress status is after the laundry amount detection process. It means that it is in the middle of the water supply stroke, and restarting operation means that it is from the water supply stroke with the extra stroke omitted. The purpose of this is that performing the putting-in process again when the operation is resumed may increase the putting-up time.

  The control device 43 operates as shown in FIG. The flowchart of FIG. 7 is started when the control device 43 receives control power (when the power-on switch 15A is turned on or when a power failure is restored). In step S1, a latch signal Sa is output to the transistor 47 and the ON coil 15C is energized to close the latching relay 15B. At this time, the latching relay 15B maintains the closed state.

  In step S2, the storage content of the nonvolatile memory 55 is read to determine whether or not the storage content remains. Here, when the previous washing operation is completed normally or when the power-off switch 16 is turned on during the previous washing operation, the stored content is the parameter “0” indicating zero. The determination in S2 is “NO”, and the process proceeds to step S3. In this step S3, the washing operation is started on the set course. In step S4, as described above, the driving progress is stored at the set timing.

  In the next step S5, it is determined whether or not the washing operation is normally completed. If “NO”, the power-off switch 16 is turned on during the washing operation in step S6 (the power-off command Sb is changed). Judgment) or not. If there is no power-off command Sb, the process returns to step S4.

  If the washing operation ends normally or if there is a power-off command Sb, the stored contents are cleared in step S7, the driving of each device is stopped in step S8, and latched in the transistor 49 in step S9. An open signal Sc is output to energize the off coil 15D. As a result, the latching relay 15B is opened, and all devices including the control device 43 are disconnected. As a result, in the washing operation end state, the control device 43 is not in the standby operation state because the power is cut off. Therefore, it is possible to eliminate power consumption in the operation end state (state where the washing machine is not used).

  Here, if a power failure occurs during the washing operation (during the loop execution of steps S4 → S5 → S6 → S4), power is not supplied to the control device 43 and other devices at that time. Thereby, control of the control apparatus 43 is stopped. Then, the storage contents at the time of the power failure remain in the nonvolatile memory 55. In addition, when this power failure occurs, the latching relay 15B remains in the closed state.

  When the power failure is restored, the latching relay 15B remains in the closed state as described above. Therefore, the commercial AC power is supplied to the control power circuit 45 and the control device 43 is supplied with power as shown in FIG. Control will start. In this case, the ON coil 15C is uniquely energized in step S1, but the latching relay 15B remains closed. Thereafter, in the determination process of step S2, since it is determined that the stored contents of the non-volatile memory 55 remain, the process proceeds to step S10, the power failure indicator 17 is displayed, and further step S11. Thus, it is determined whether or not the washing machine lid 1d is closed based on the output of the washing machine lid opening / closing sensor 52. If the washing machine lid 1d is closed, the process proceeds to step S12, and the operation is resumed according to the stored contents.

When it is determined that the washing machine lid 1d is opened, the process proceeds to step S13, and a display for prompting the closure of the washing machine lid 1d is displayed on an appropriate display, and the user's lid is closed.
After step S12, the process proceeds to step S4 and subsequent steps.

  Thus, according to the present embodiment, the energizing path 44a between the power plug 44 and the control power circuit 45 is closed by the operation of the user, and the closed state is maintained after the closing. Since the switch device 15 is provided for opening the energization path 44a based on the normal termination of the washing operation or the occurrence of the power-off command Sb from the power-off switch 16, the energization path 44a is opened in the washing operation end state. The circuit is opened, the power supply of the control device 43 is cut off, and the control device 43 does not enter the standby operation state. As a result, power consumption can be suppressed. Further, when the washing operation is started, the control device 43 stores the progress status and the operation content in the nonvolatile memory 55 at a predetermined timing. When the washing operation is normally finished or when the washing operation is finished, the power supply switch 16 is turned on. Since the stored contents of the nonvolatile memory 55 are cleared when the turn-off command Sb is input, the washing operation is performed when the washing operation ends normally, or when the power-off command Sb is not input by the power-off switch 16, that is, at a power failure. Is completed, the progress of the washing operation and the details of the operation are stored in the nonvolatile memory 55.

Therefore, it is possible to memorize the progress of the washing operation and the details of the operation at the time of the power outage without providing the power outage detecting means and the power holding means.
Furthermore, the control device 43 reads the stored contents of the nonvolatile memory 55 when power is supplied, and resumes the washing operation based on the stored contents when the stored contents regarding the progress status and the operation contents remain. Therefore, after power failure recovery, it can be resumed from the power failure state.

  Furthermore, since the above-described switch device 15 is provided in the energization path 44a between the power plug 44 and the control power circuit 45, when there is a power failure, the energization path 44a remains closed, and the power failure occurs. When the power is restored, power is automatically supplied to the control power supply circuit 45, so that control power is also automatically supplied to the control device 43.

Therefore, when the power failure is restored, the washing machine operation can be automatically resumed from the power failure state without waiting for the user's operation.
Further, according to the present embodiment, the switch device 15 is connected in parallel to the power-on switch 15A composed of an automatic return type push switch that is manually turned on to close the energization path 44a, and the power-on switch 15A. The latching relay 15b is closed by energization of the on-coil 15c, and is kept closed even after the on-coil 15c is de-energized and opened when the off-coil 15d is energized. The controller 43 energizes the ON coil 15c via the latching relay drive circuit 46 based on the closing of the energization path 44a, and the washing operation is normally terminated, or the power-off command Sb by the power-off switch 16 is issued. Latching for energizing the off coil 15d via the latching relay drive circuit 46 based on the occurrence Because with a rate control unit, it can be reliably expected operation of the switching device 15.

Moreover, according to the present Example, since the power failure occurred was displayed on the power failure indicator 17, the occurrence of the power failure can be easily and reliably notified to the user.
Further, according to the present embodiment, it is safe because the washing operation is resumed based on the stored contents on the condition that the washing machine lid 1d is closed when the power failure is restored. That is, in general, in the washing process, the washing process is executed even if the user opens the washing machine lid 1d halfway, but the user does not notice the restoration of the power failure and operates with the washing machine lid 1d opened. However, it is not safe for safety in this embodiment.

    In addition, this invention is not limited to the said Example, For example, as a switch apparatus, it is not restricted to the said structure, It can implement variously.

Electrical configuration diagram showing one embodiment of the present invention Longitudinal side view of washing machine Front view of the operation panel A figure showing the time chart of the “Standard Course” The figure which shows the time chart of “standard course with reservation setting” The figure which shows the time chart of “standard course with extraordinary” Flow chart showing control contents

Explanation of symbols

  In the drawing, 15 is a switch device, 15A is a power-on switch, 15B is a latching relay, 15C is an on-coil, 15D is an off-coil, 16 is a power-off switch (power-off command generating means), and 17 is a display (display). Means), 43 is a control device (washing operation control means, storage control means to be described later, power failure recovery operation restarting means, latching relay control means), 46 is a latching relay drive circuit, and 55 is a non-volatile memory.

Claims (4)

A control device powered by a power plug via a control power circuit;
A non-volatile memory connected to or included in the control device;
A power-off command generating means that is operated by a user to input a power-off command to the control device;
The control device has a function as a washing operation control means for executing a washing operation by drivingly controlling a washing machine motor, a water supply valve, and a drain valve, and when the washing operation is started, a progress situation and an operation content are determined in advance. As storage control means for clearing the stored contents of the nonvolatile memory when the washing operation is normally finished or when the power-off command is input by the power-off command generation means In addition, when the power is supplied, the stored contents of the nonvolatile memory are read out, and when the stored contents regarding the progress and driving contents remain, the washing operation is resumed based on the stored contents. It has a function as a power failure recovery operation restarting means to
The energizing path between the power plug and the control power circuit is closed by the user's operation and the closed state is maintained after the closing, and the washing operation is normally terminated or the power is turned off. A washing machine comprising a switch device that opens the energization path when a power-off command is generated by the command generation means. The switch device is a power-on switch composed of an automatic return type push switch that is manually turned on to close the energization path, and is closed and closed by energization of an on coil connected in parallel to the power-on switch. After that, it is composed of a latching relay that maintains a closed state even when the on-coil is disconnected and opens when the off-coil is energized,
A latching relay drive circuit for driving the latching relay;
The control device energizes the on-coil via the latching relay drive circuit based on the closing of the energization path, and the washing operation is normally terminated, or the power-off command is generated by the power-off command generating means. The washing machine according to claim 1, further comprising latching relay control means for energizing the off-coil via the latching relay drive circuit based on the above. A display means,
The power failure recovery operation restarting means reads the stored contents of the non-volatile memory when the power is supplied, and resumes the washing operation based on the stored contents when the stored contents of the progress status and the operating contents remain. The washing machine according to claim 1 or 2, wherein a power outage is displayed on the display means. The power failure recovery operation restarting means reads the stored contents of the non-volatile memory when the power is supplied, and the washing machine lid is closed when the stored contents of the progress status and the operating contents remain. 4. The washing machine according to claim 1, wherein the washing operation is restarted based on the stored contents .

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