JP2019162324A - Washing machine - Google Patents

Abstract

To allow a smooth progress of a washing operation by eliminating as much as possible the time required for unbalance correction operation according to vibration detection of a water tub during the execution of a dewatering step.SOLUTION: A washing machine includes: an outer case; a water tub elastically supported in the outer case; a dewatering tub provided rotatably in the water tub; a drive mechanism for rotationally driving the dewatering tub; a vibration sensor for detecting the vibration of the water tub; and a control device for executing a washing operation including a dewatering step by controlling the drive mechanism. When the control device has detected a vibration generating state where the detected vibration of the vibration sensor has become equal to or greater than a predetermined size during the execution of a dewatering step, the control device stops the rotation of the dewatering tub temporarily, and then, according to the rotational frequency of the dewatering tub at the time of the vibration generating state, executes a dewatering retry operation or an unbalance correction operation.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a washing machine.

  In a so-called vertical type washing machine, an unbalanced state occurs due to uneven clothing in the dewatering tank during the dewatering process of rotating the dewatering tank at high speed, and it is elastically supported in the outer box. May cause abnormal vibration of the aquarium. When such abnormal vibration occurs, there are problems such as the rotation speed of the dehydrating tank does not increase and the dehydration is not sufficiently performed, or the water tank is in strong contact with the outer case and noise is generated. Therefore, conventionally, when an abnormal vibration of the water tank is detected during the dehydration process, the rotation of the dewatering tank is temporarily stopped, and after a certain amount of water is supplied into the dewatering tank, an unbalance correction operation for operating the pulsator for a short time, That is, the cloth unraveling operation is performed, and then the dehydration process is performed again (see, for example, Patent Document 1).

JP-A-9-70493

  As described above, when an abnormal vibration of the water tank is detected during the dehydration process, the unbalance state of the dewatering tank can be eliminated by executing the unbalance correction operation. However, the execution of the unbalance correction operation uses extra water and takes extra time, and as a result, the time required for the entire washing operation is extended from the initial schedule. Therefore, a smoother washing operation is desired.

  In view of this, a washing machine is provided that enables smooth progress of the washing operation while omitting as much time as possible for the unbalance correction operation associated with vibration detection of the water tank during the dehydration process.

  The washing machine of the embodiment includes an outer box, a water tank elastically supported in the outer box, a dewatering tank rotatably provided in the water tank, and a drive mechanism that rotationally drives the dewatering tank, A vibration sensor that detects the vibration of the water tank; and a control device that controls the drive mechanism to execute a washing operation including a dehydration process. The control device detects vibration detected by the vibration sensor during the dehydration process. When the vibration occurrence state is detected, the rotation of the dehydration tank is temporarily stopped, and then the dehydration retry operation is performed according to the rotation speed of the dehydration tank when the vibration occurrence state is detected. Alternatively, an unbalance correction operation is executed.

1 is a longitudinal side view schematically showing a configuration of a washing machine according to the first embodiment. Block diagram schematically showing the electrical configuration Flow chart showing the control procedure when detecting the vibration occurrence state in the dehydration process The flowchart which shows 2nd Embodiment and shows the control procedure at the time of the vibration generation state detection in a dehydration process. The flowchart which shows 3rd Embodiment and shows the control procedure at the time of the vibration generation state detection in a dehydration process. The flowchart which shows 4th Embodiment and shows the control procedure at the time of the vibration generation state detection in a dehydration process. The flowchart which shows 5th Embodiment and shows the control procedure at the time of the vibration generation state detection in a dehydration process. The flowchart which shows 6th Embodiment and shows the control procedure at the time of the vibration generation state detection in a spin-drying | dehydration process. The flowchart which shows 7th Embodiment and shows the control procedure at the time of the vibration generation state detection in a dehydration process. The flowchart which shows 8th Embodiment and shows the control procedure at the time of the vibration generation state detection in a dehydration process. The flowchart which shows 9th Embodiment and shows the control procedure at the time of the vibration generation state detection in a spin-drying | dehydration process.

  Hereinafter, several embodiments applied to a so-called vertical type fully automatic washing machine will be described with reference to the drawings. In addition, between several embodiment, the same code | symbol is attached | subjected to the same part and new illustration and repeated description are abbreviate | omitted.

(1) First Embodiment A first embodiment will be described with reference to FIGS. FIG. 1 shows an overall configuration of a washing machine 1 according to the present embodiment, and the washing machine 1 includes an outer box 2 made of, for example, a steel plate and having a rectangular shape as a whole. A base plate 4 having four legs 3 is provided at the bottom of the outer box 2. A water tub 5 for storing washing water is provided in the outer box 2 by being elastically suspended and supported by an elastic suspension mechanism 6 having a well-known configuration. A dewatering tank 7 described later is rotatably provided in the water tank 5.

  A drain port 8 is formed at the bottom of the water tank 5, and a drain channel 10 having a motor-driven drain valve 9 is connected to the drain port 8. Although not shown in detail, an air trap is provided at the bottom of the water tank 5, and a water level sensor 11 (FIG. 2) detects the water level in the water tank 5, that is, in the dewatering tank 7, via an air tube connected to the air trap. Reference) is provided.

  The dewatering tank 7 has a substantially bottomed cylindrical shape, and a large number of dewatering holes 7a are formed in the peripheral wall portion thereof. For example, a liquid-filled rotary balancer 12 is attached to the upper end portion of the dewatering tank 7. A stirring body (pulsator) 13 is disposed at the inner bottom of the dehydration tank 7. A laundry (not shown) is accommodated in the dewatering tub 7, and washing, rinsing, dewatering, and drying processes of the laundry are performed.

  A water tank cover 14 is attached to the upper part of the water tank 5. The water tank cover 14 is provided with an opening 14a for loading and unloading laundry at a substantially central portion, and an inner lid 15 for opening and closing the opening 14a is attached. A water supply port 16 for water supply is provided at the rear of the upper surface of the water tank cover 14. A drive mechanism 17 is disposed at the lower portion of the water tank 5, that is, the outer bottom portion.

  The drive mechanism 17 includes a washing machine motor 18 formed of an outer rotor type DC three-phase brushless motor, a hollow tub shaft 19, a stirring shaft 20 penetrating the tub shaft 19, and the rotational driving force of the washing machine motor 18. , 20 is provided with a clutch mechanism 21 or the like for selectively transmitting to. The dehydrating tank 7 is connected to the upper end of the tank shaft 19, and the stirring body 13 is connected to the upper end of the stirring shaft 20. Although not shown in detail, the clutch mechanism 21 is configured to operate in conjunction with the drain valve 9 as is well known.

  That is, the clutch mechanism 21 is configured so that the driving force of the washing machine motor 18 is agitated through the agitation shaft 20 while the dewatering tank 7 is fixed (stopped) at the time of washing and rinsing when the drain valve 9 is closed. 13, and the agitator 13 is directly forward / reversely driven at a low speed. Further, during the dehydration (dehydration process) when the drain valve 9 is opened, the driving force of the washing machine motor 18 is supplied via the tank shaft 19 while the tank shaft 19 and the stirring shaft 20 are connected. The dehydration tank 7 and the stirring body 13 are directly rotated at a high speed in one direction. The rotational speed of the washing machine motor 18 at the time of dehydration is equal to the rotational speed of the dewatering tub 7. As shown only in FIG. 2, the drive mechanism 17 is also provided with a rotation sensor 31 that detects the rotational position of the washing machine motor 18 and thus the rotation speed, and a current sensor 32 that detects the current flowing through the washing machine motor 18. It has been.

  On the other hand, a top cover 22 made of synthetic resin having a thin hollow box shape is mounted on the upper portion of the outer box 2. In the center of the top surface of the top cover 22, a substantially circular laundry entrance (not shown) is formed above the dewatering tub 7, and a lid 23 for opening and closing the laundry entrance is provided. ing. An operation panel 28 (see FIG. 2) is provided on the upper surface of the front portion of the top cover 22. Although not shown in detail, the operation panel 28 displays a selection section for a washing operation, an operation unit for instructing the start of the operation, a washing process, a scheduled operation end time (washing remaining time), and the like. The display section is provided.

  A water supply mechanism 24 for supplying water into the water tank 5 is provided at the rear portion of the top cover 22. The water supply mechanism 24 includes a water supply valve 25, a water injection case 26, and a flexible water supply hose 27, and the tip of the water supply hose 27 is connected to the water supply port 16. The water supply valve 25 is provided with a water supply receiving port 25a, and the water supply receiving port 25a is connected to a tip end of a connection hose connected to a faucet (not shown). When the water supply valve 25 is opened, water supplied from the water supply is supplied from the water supply port 16 into the dehydration tank 7 and the water tank 5 through the water injection case 26 and the water supply hose 27.

  In the present embodiment, the washing machine 1 is provided with a vibration sensor 29 as vibration detection means for detecting the vibration of the water tank 5. In this case, the vibration sensor 29 includes, for example, an acceleration sensor that detects acceleration in three axial directions, that is, longitudinal, lateral, and vertical directions, and is provided on the outer surface of the rear upper portion of the water tank 5. In the present embodiment, the washing machine 1 is also provided with an outside air temperature sensor 33 (see FIG. 2) as a temperature sensor for detecting the ambient environmental temperature.

  In the present embodiment, a control device 30 (electronic unit) is provided in the lower part of the outer wall 2 on the back wall side. FIG. 2 schematically shows an electrical configuration of the washing machine 1 with the control device 30 as a center. The control device 30 is mainly configured by a computer including a CPU, a ROM, a RAM, and the like. The whole process of washing operation is executed by controlling the whole 1. The control device 30 receives an operation signal from the operation panel 28 and controls display on each display unit of the operation panel 28. Further, the control device 30 receives a water level detection signal from the water level sensor 11 and a detection signal from the vibration sensor 29, and further receives from the rotation sensor 31, current sensor 32, and outside air temperature sensor 33. A detection signal is input.

  The control device 30 controls the water supply valve 25, the drain valve 9, the washing machine motor 18, etc. according to the input signal from each sensor or a pre-stored control program according to the user's setting operation of the washing course on the operation panel 28. A washing operation consisting of a process of controlling, washing, rinsing and dewatering is executed. At this time, for example, when “standard course” is selected as the driving course for automatic driving, water supply, washing process, drainage, first dehydration process, water supply, first rinse process, intermediate dehydration process, second test are performed. Well-known processes such as a rinsing process, drainage, and final dehydration process are sequentially performed. Thus, a plurality of dehydration processes, for example, three dehydration processes are provided. Each dehydration process is executed such that the rotational speed of the washing machine motor 18 (dehydration tank 7) finally reaches, for example, about 900 rpm.

  In the course of automatic driving, the operation of detecting the volume of clothes, that is, the amount of cloth in the dewatering tank 7 is executed at the start of driving. Based on the result of the cloth amount detection operation, the water level at the time of washing and rinsing is set, and the execution time of each process is automatically set. Water supply control into the dewatering tank 7 is performed based on the water level detection of the water level sensor 11. As is well known, the cloth amount detection operation is performed based on the fact that the agitator 13 is rotationally driven for a short time by the drive mechanism 17 and the current flowing through the washing machine motor 18 at that time is detected by the current sensor 32. Thereby, a capacity detection unit is configured by the control device 30 and the like. Further, as is well known, the control device 30 sets the scheduled operation end time (remaining operation time) according to the operation course and the amount of cloth at the start of the washing operation, and displays the display unit of the operation panel 28 during the washing operation. To display the remaining operation time.

  As will be described in the following description of the operation, in the present embodiment, the control device 30 monitors the detection signal of the vibration sensor 29 during the execution of each dehydration process, and detects the magnitude of the detected vibration of the water tank 5 ( When the (amplitude) is equal to or greater than a threshold value (first threshold value), it is determined that the water tank 5 is in a vibration occurrence state. When the vibration generation state is detected, the control device 30 temporarily stops the rotation of the dehydration tank 7, and then performs a dehydration retry operation or an unbalance according to the number of rotations of the dehydration tank 7 when the vibration generation state is detected. Perform corrective action.

  Here, in the unbalance correction operation, the drain valve 9 is closed, the water supply mechanism 24 supplies a constant amount of water into the water tank 5 (dehydration tank 7), and the drive mechanism 17 drives the stirrer 13 in the forward and reverse directions for a short time. Then, the drainage valve 9 is opened to drain the water. As a result, the clothes in the dewatering tank 7 are loosened, and the unevenness is eliminated. The dehydration retry operation is performed as it is by performing the dehydration process again, that is, by driving the washing machine motor 18 to rotate the dewatering tub 7 from the rotation speed 0 toward the target rotation speed.

  More specifically, when the control device 30 detects the vibration occurrence state, the control device 30 increases the magnitude of the vibration detected by the vibration sensor 29 by A times, for example, 1.2 times the threshold value (first threshold value). If the vibration is large enough to exceed the second threshold value compared to the value (second threshold value), an unbalance correction operation is executed. On the other hand, when the magnitude of the vibration detected by the vibration sensor 29 is equal to or less than the second threshold, the control device 30 determines that the rotation speed of the dehydration tank 7 when the vibration occurrence state is detected is a predetermined rotation speed (for example, 460 to 600). It is determined whether the speed is equal to or lower than 470 rpm, and if it is equal to or lower than the predetermined rotational speed, a dehydration retry operation is executed. If it exceeds the predetermined number of revolutions, an unbalance correction operation is executed.

  In the present embodiment, as a method for detecting the vibration occurrence state, the vibration occurrence state is determined when the magnitude of vibration detected by the vibration sensor 29 is equal to or greater than a threshold value (first threshold value). For example, when it is detected a predetermined number of times (for example, 5 times) that the magnitude of vibration detected by the vibration sensor 29 is equal to or greater than a threshold value (first threshold value), it is determined that a vibration has occurred. Is also possible. When the number of times is used in this way, the number of times corresponding to the second threshold value is compared with the number of times that the predetermined number of times is B times, for example, 1.2 times (for example, six times). It is also possible to execute an unbalance correction operation.

  Next, the operation of the washing machine 1 configured as described above will be described mainly with reference to FIG. The flowchart of FIG. 3 shows a control procedure that is performed by the control device 30 and that is accompanied by detection of the vibration occurrence state of the water tank 5 in each dehydration process (first dehydration process, intermediate dehydration process, and final dehydration process). That is, when the dehydration process is started, first, in step S1, the vibration detection signal of the vibration sensor 29 is read. In the next step S2, it is determined whether or not the magnitude of the vibration of the detection signal is greater than or equal to a threshold value (first threshold value). If the magnitude of vibration is less than the threshold (No in step S2), dehydration is continued in step S3, and the process returns to step S1.

  On the other hand, if the magnitude of the vibration is equal to or greater than the threshold value (Yes in step S2), the rotation of the dewatering tank 7 is temporarily stopped in step S4. In the next step S5, it is determined whether or not the magnitude of the vibration of the detection signal is equal to or smaller than a second threshold value obtained by multiplying the first threshold value by A. If the magnitude of the vibration of the detection signal exceeds the second threshold (No in step S5), an unbalance correction operation is executed in step S6.

  On the other hand, when the magnitude of the vibration of the detection signal is equal to or smaller than the second threshold value (Yes in step S5), in the next step S7, the rotation speed of the dehydration tank 7 when the vibration occurrence state is detected. Is determined to be less than or equal to a predetermined rotation speed (eg, 460 rpm). If the rotation speed of the dewatering tank 7 is equal to or lower than the predetermined rotation speed (Yes in step S7), a dehydration retry operation is executed in step S8. If the rotational speed of the dewatering tank 7 exceeds the predetermined rotational speed (No in step S7), the process proceeds to step S6 and an unbalance correction operation is performed.

  Here, the present inventor does not necessarily execute the unbalance correction operation when the vibration occurrence state is detected, but the dehydration retry operation, that is, the dehydration tank 7 is rotated again from the stopped state to the target rotational speed (900 rpm). We paid attention to the fact that there are often cases where the robot can survive the operation. The reason why the dehydration retry operation is effective can be considered as follows.

  That is, at the start of the dewatering process (the dewatering tank 7 is in a relatively low rotation speed), the water tank 5 is likely to be swung around due to the unbalanced state of the dewatering tank 7. It can be considered that the water tank 5 comes into contact with somewhere in the outer box 2 to reach a vibration generating state. In this case, since the gap dimension between the outer box 2 and the water tank 5 is not uniform on the four sides of the outer box 4, the degree of contact with the outer box 2 (depending on the position where the dewatering tank 7 starts to rotate ( The presence or absence of contact) is different, and the vibration generation state may not be reached. In addition, there is a case where the moisture content in the garment decreases to some extent (although a small amount) before the dehydration tank 7 is stopped and then restarted, and the state of the garment changes accordingly, and there is a case where vibration does not occur. Conceivable.

  In this way, if the dehydration process can proceed as it is by the dehydration retry operation, it is possible to eliminate unnecessary increase in the operation time compared to the case where the unbalance correction operation is performed. In addition, the amount of water used can be reduced. However, depending on the number of rotations of the dehydration tank 7 at the time when the abnormal vibration is detected, the dehydration retry operation is executed or the dehydration retry operation is repeatedly executed, which is more than the case where the unbalance correction operation is performed. There is a risk of taking time.

  For example, when a vibration generation state is detected when the rotation speed of the dewatering tank 7 is high (for example, 470 rpm or more), it has been confirmed that there are many cases in which a vibration generation state occurs again even if the dehydration retry operation is performed. In such a case, it is preferable in terms of efficiency to execute the imbalance correction operation promptly without repeating the dehydration retry operation unnecessarily. As described above, although the dehydration retry operation is effective, it is not always preferable to perform the dehydration retry operation unconditionally.

  According to the present embodiment, when the controller 30 detects the vibration occurrence state of the water tank 5 during the dehydration process, the controller 30 performs the dehydration retry operation or the unbalance according to the rotation speed of the dehydration tank 7 when the vibration occurrence state is detected. Perform corrective action. Therefore, when detecting the vibration occurrence state of the water tank 5, it is possible to perform an appropriate process according to the number of rotations of the dewatering tank 7, and it is not necessary to perform an unbalance correction operation every time. As a result, it is possible to obtain an excellent effect that the time required for the unbalance correction operation accompanying the vibration detection of the water tank 5 during the dehydration process is saved as much as possible and the smooth washing operation can be performed.

(2) Second Embodiment FIG. 4 shows a second embodiment, and shows a processing procedure that is performed by the control device 30 and that is accompanied by detection of the vibration occurrence state of the water tank 5 in the dehydration process. The second embodiment is different from the first embodiment (FIG. 3) in the following points. That is, after the dehydration process is started, the processes in steps S1 to S6 are executed in the same manner as in the first embodiment. Here, in step S5, when the magnitude of the vibration of the detection signal exceeds the second threshold value obtained by multiplying the first threshold value by A (No in step S5), unbalance correction is performed in step S6. The action is executed.

  On the other hand, when the magnitude of the vibration of the detection signal is equal to or smaller than the second threshold value (Yes in step S5), after proceeding to step S11, the dehydration retry operation is executed in step S12. In step S11, the maximum number of repetitions of the dehydration retry operation is set according to the rotation speed of the dehydration tank 7 when the vibration occurrence state is detected. In this case, the maximum number of repetitions of the dehydration retry operation when the rotation speed of the dewatering tank 7 is low is set to be larger than when the rotation speed is high.

  Specifically, when the rotation speed of the dewatering tank 7 at the time of detecting the vibration occurrence state is less than 100 rpm, the maximum number of repetitions of the dewatering retry operation is set to 4 times. When it is 100 rpm or more and less than 200 rpm, the maximum number of repetitions is set to three. When it is 200 rpm or more and less than 300 rpm, the maximum number of repetitions is set to two. When it is 300 rpm or more, the maximum number of repetitions is set to one. As described above, after the maximum number of repetitions of the dehydration retry operation is set according to the rotation speed of the dehydration tank 7 when the vibration occurrence state is detected, the dehydration retry operation is executed in step S12.

  After the dehydration retry operation is executed, it is determined in step S13 whether or not the magnitude of the vibration of the vibration detection signal of the vibration sensor 29 is greater than or equal to the first threshold value. If the magnitude of vibration is less than the first threshold (No in step S13), dehydration is continued in step S14. On the other hand, after the dehydration retry operation is executed in step S12, if the magnitude of vibration of the vibration detection signal of the vibration sensor 29 detects the first threshold value or more (Yes in step S13), step S15 It is determined whether the number of dehydration retry operations exceeds the set maximum number of repetitions.

  If the number of dehydration retry operations does not exceed the set maximum number of repetitions (No in step S15), the process returns to step S12, and the dehydration retry operation is executed again. On the other hand, when the number of dehydration retry operations exceeds the set maximum number of repetitions (Yes in step S15), an unbalance correction operation is executed in step S16. Thus, when executing the dehydration retry operation, the control device 30 determines the maximum number of repetitions of the dehydration retry operation when the rotation number of the dehydration tank 7 is low when the vibration generation state of the water tank 5 is detected. Control is performed so that the rotation speed is higher than when the rotation speed is high.

  Here, as described in the first embodiment, when the number of rotations of the dewatering tank 7 at the time of detecting the vibration occurrence state is relatively low, the dehydration retry operation is performed or repeatedly performed to perform dewatering. The process can proceed as it is, that is, the possibility of successful dehydration is high. On the contrary, when the rotation speed of the dehydration tank 7 at the time of detecting the vibration occurrence state is relatively high, even if the dehydration retry operation is repeatedly executed, the possibility of successful dehydration is relatively low. For this reason, the amount of time spent repeatedly performing the dehydration retry operation is wasted, so it can be said that it is more efficient to shift to the unbalance correction operation sooner.

  According to the second embodiment, when detecting the vibration occurrence state of the water tank 5, it is possible to perform an appropriate process according to the rotation speed of the dewatering tank 7, and it is not necessary to perform an unbalance correction operation every time. be able to. As a result, as in the first embodiment, the time required for the unbalance correction operation associated with the vibration detection of the water tank 5 during the dehydration process can be saved as much as possible, and the smooth washing operation can be performed smoothly. Can be obtained. And in this 2nd Embodiment, the control apparatus 30 was made to set the maximum frequency | count of dehydration retry operation | movement according to the rotation speed of the dehydration tank 7 at the time of vibration generation state detection. By setting the maximum number of repetitions of the dehydration retry operation, more efficient washing operation can be performed.

(3) Third Embodiment FIG. 5 shows a third embodiment, and again shows a processing procedure performed by the control device 30 with detection of the vibration generation state of the water tank 5 in the dehydration process. Yes. In the third embodiment, a determination step S21 is provided instead of the determination step S7 in the first embodiment (FIG. 3). In the third embodiment, the control device 30 executes an unbalance correction operation when the rotational speed of the dewatering tank 7 when the vibration occurrence state is detected is within a predetermined range corresponding to the secondary resonance mode. If the rotation speed is other than that, the dehydration retry operation is executed.

  That is, when the vibration generation state of the water tank 5 is detected and the magnitude of the vibration of the detection signal is equal to or smaller than the second threshold value (Yes in step S5), in step S21, the removal of the vibration generation state is detected. It is determined whether the rotational speed of the water tank 7 is outside a predetermined range (for example, a range of 200 to 300 rpm) corresponding to the secondary resonance mode. If the rotation speed of the dewatering tank 7 is within the predetermined range (No in step S21), an unbalance correction operation is executed in step S22. If the rotation speed of dehydration tank 7 is out of the predetermined range (No in step S21), a dehydration retry operation is executed in step S23.

  Here, when the rotation speed of the dehydrating tank 7 at the time of detecting the vibration generation state is within a predetermined range (for example, 200 to 300 rpm) corresponding to the secondary resonance mode, the vibration of the water tank 5 at the time of detecting the vibration generating state It is a vibration mode that moves, with high rotational speed and high rotational energy. In this case, there is a possibility that the main body moves and a large noise occurs. Moreover, even if the dehydration retry operation is performed, there is a high possibility that the same situation is repeated. Therefore, in such a case, the occurrence of the above-mentioned situation can be prevented in advance and the safety can be ensured by performing the unbalance correction operation without performing the dehydration retry operation.

  Therefore, also in this third embodiment, it is possible to perform an appropriate process according to the number of rotations of the dewatering tank 7 when detecting the vibration occurrence state of the water tank 5, and without performing an unbalance correction operation every time. I can finish it. As a result, as in the first embodiment, the time required for the unbalance correction operation associated with the vibration detection of the water tank 5 during the dehydration process can be saved as much as possible, and the smooth washing operation can be performed smoothly. Can be obtained. In particular, in the third embodiment, the control device 30 performs the dehydration retry when the rotation speed of the dewatering tank 7 when the vibration occurrence state is detected is within a predetermined range (for example, 200 to 300 rpm) corresponding to the secondary resonance mode. The unbalance correction operation was performed without performing the operation. As a result, it is possible to prevent the main body from moving and a large amount of noise, and to ensure safety.

(4) Fourth Embodiment FIG. 6 shows a fourth embodiment, and shows a processing procedure that is performed by the control device 30 and that is accompanied by detection of the vibration occurrence state of the water tank 5 in the dehydration process. The fourth embodiment differs from the first embodiment (FIG. 3) and the like in the following points. That is, after the dehydration process is started, the processing of step S1 to step S7 is executed in the same manner as in the first embodiment. Here, when the vibration generation state is detected and the magnitude of the vibration of the detection signal is equal to or smaller than the second threshold (Yes in step S5), in the next step S7, the vibration generation state is detected. It is determined whether or not the rotational speed of the dewatering tank 7 is equal to or lower than a predetermined rotational speed (for example, 460 rpm).

  In step S5, when the magnitude of the vibration of the detection signal exceeds the second threshold value (No in step S5), and the rotation speed of the dehydration tank 7 when the vibration occurrence state is detected exceeds the predetermined rotation speed. If this is the case (No in step S7), an unbalance correction operation is executed in step S6. If the rotational speed of the dewatering tank 7 is equal to or lower than the predetermined rotational speed (Yes in step S7), the process proceeds to step S31, and then a dehydration retry operation is performed in step S32.

  In step S31, the maximum number of repetitions of the dehydration retry operation is determined based on the detection result of the clothing capacity (cloth amount) in the dewatering tub 7 at the start of the washing operation. In this case, the maximum number of repetitions of the dehydration retry operation when the detected amount of clothing is small is set to be larger than when the amount of clothing is large.

  Specifically, when the detected amount of cloth is less than 2 kg, the maximum number of repetitions of the dehydration retry operation is set to four. When the amount of cloth is 2 kg or more and less than 4 kg, the maximum number of repetitions is set to three. When the amount of cloth is 4 kg or more and less than 6 kg, the maximum number of repetitions is set to two. When the amount of cloth is 6 kg or more, the maximum number of repetitions is set to one. Thus, after setting the maximum number of times of dehydration retry operation according to the amount of clothes, the dehydration retry operation is executed in step S32.

  After the dehydration retry operation is executed, in step S33, it is determined whether or not the magnitude of the vibration detection signal of the vibration sensor 29 is equal to or greater than the first threshold value. If the magnitude of vibration is less than the first threshold (No in step S33), dehydration is continued in step S34. On the other hand, after the dehydration retry operation is executed in step S32, when the magnitude of vibration of the vibration detection signal of the vibration sensor 29 detects the first threshold value or more (Yes in step S33), step S35 is performed. It is determined whether the number of dehydration retry operations exceeds the set maximum number of repetitions.

  If the number of dehydration retry operations does not exceed the set maximum number of repetitions (No in step S35), the process returns to step S32, and the dehydration retry operation is executed again. On the other hand, when the number of dehydration retry operations exceeds the set maximum number of repetitions (Yes in step S35), an unbalance correction operation is executed in step S36. As described above, when executing the dehydration retry operation, the control device 30 increases the maximum number of repetitions of the dehydration retry operation when the amount of clothing in the rotary tub 7 is small compared to when the amount of clothing is large. Control to do.

  Here, when the amount of clothes in the dewatering tank 7 is small, the cloth is more likely to be biased than in the case where the amount of cloth is large, and an unbalanced state is likely to occur. Unbalanced conditions are less likely to occur when the amount of fabric is large. Therefore, when the capacity of the clothes in the dehydration tank 7 detected in the capacity detection operation is small, the probability of a successful dehydration process can be increased by increasing the maximum number of repetitions of the dehydration retry operation. Conversely, if the amount of fabric is relatively large, even if the dehydration retry operation is repeatedly executed, the possibility of successful dehydration is relatively low. For this reason, the amount of time spent repeatedly performing the dehydration retry operation is wasted, so that it is more efficient to shift to the unbalance correction operation sooner.

  Therefore, according to the fourth embodiment, when the vibration occurrence state of the water tank 5 is detected, it is possible to perform appropriate processing according to the rotation speed of the dewatering tank 7 and the amount of cloth in the dewatering tank 7, and each time This can be done without performing the unbalance correction operation. As a result, as in the first embodiment, the time required for the unbalance correction operation associated with the vibration detection of the water tank 5 during the dehydration process can be saved as much as possible, and the smooth washing operation can be performed smoothly. Can be obtained. In the fourth embodiment, more efficient washing operation can be performed by setting the maximum number of repetitions of the dehydration retry operation.

(5) Fifth Embodiment FIG. 7 shows a fifth embodiment. The fifth embodiment is different from the first embodiment (FIG. 3) in the following points. That is, after the dehydration process is started, the processes in steps S1 to S7 are executed in the same manner as in the first embodiment. If the rotation speed of the dewatering tank 7 is equal to or lower than the predetermined rotation speed in step S7 (Yes in step S7), the process proceeds to step S41.

  In step S41, it is determined whether or not the vibration occurrence state is detected in an intermediate dehydration process among a plurality of dehydration processes. Here, as described above, in the washing operation of the standard course, three dehydration processes such as the first dehydration, the intermediate dehydration, and the final dehydration are included. If the vibration occurrence state is detected in the first dehydration or final dehydration process (No in step S41), the dehydration retry operation is executed in step S42. On the other hand, when a vibration occurrence state is detected in the intermediate dehydration process (Yes in step S41), an unbalance correction operation is executed in step S43.

  As described above, in the present embodiment, the control device 30 performs the unbalance correction operation without performing the dehydration retry operation in the intermediate dehydration process. In other words, when the dehydration retry operation is performed, the maximum number of repetitions of the dehydration retry operation in the intermediate dehydration process is 0, and the maximum number of repetitions is less than other dehydration processes (first dehydration and final dehydration). Here, among the plurality of dehydration processes during the washing operation, the intermediate dehydration process does not significantly affect the finished state of the washing of clothes as compared with other dehydration processes. In the present embodiment, in the intermediate dehydration process, the unbalance correction operation is performed at an early stage even if a vibration occurrence state is detected. As a result, the intermediate dehydration process is effective in eliminating unnecessary and long dehydration retry operations and reducing waste of the entire time.

  Therefore, also in the fifth embodiment, when the vibration occurrence state of the water tank 5 is detected, it is possible to perform an appropriate process according to which speed of the dehydration tank 7 and the dehydration process. This can be done without performing the balance correction operation. As a result, as in the first embodiment, the time required for the unbalance correction operation accompanying the vibration detection of the water tank 5 during the dehydration process is saved as much as possible, and the smooth washing operation can be progressed. An effect can be obtained. In the fifth embodiment, more efficient washing operation can be performed by making the maximum number of repetitions of the dehydration retry operation in the intermediate dehydration process smaller than others.

(6) Sixth Embodiment FIG. 8 shows a sixth embodiment. In the sixth embodiment, when the dehydration retry operation is executed, the maximum number of repetitions of the dehydration retry operation in the final dehydration process is increased from that in the previous dehydration process. 6) etc. That is, also in the sixth embodiment, after the dehydration process is started, the processing of step S1 to step S7 is executed in the same manner as in the first embodiment. If the rotational speed of the dewatering tank 7 is equal to or lower than the predetermined rotational speed in step S7 (Yes in step S7), the process proceeds to step S51, and then a dehydration retry operation is performed in step S52.

  In step S51, the maximum number of repetitions of the dehydration retry operation is set according to the dehydration process when the vibration occurrence state is detected. Here, in the washing operation, the intermediate dehydration process is performed twice in the middle of the rinsing process, so that a total of four dehydration processes of the first dehydration, the second dehydration, the third dehydration, and the final dehydration are performed. Is done. In this case, the maximum number of repetitions of the dehydration retry operation is set to be gradually increased as the later process is performed among a plurality of (four times) dehydration processes. That is, when executing the dehydration retry operation, the control device 30 increases the maximum number of repetitions of the dehydration retry operation in the final dehydration process compared to the previous dehydration process.

  Specifically, when the vibration occurrence state is detected in the first dehydration process, the maximum number of repetitions of the dehydration retry operation is set to one. In the case of the second dehydration process, the maximum number of repetitions is set to two. In the case of the third dehydration process, the maximum number of repetitions is set to three. In the case of the final dehydration process, the maximum number of repetitions is set to four. In this way, after the maximum number of times of dehydration retry operation is set according to the dehydration process, the dehydration retry operation is executed in step S52.

  After the dehydration retry operation is executed, it is determined in step S53 whether or not the magnitude of the vibration detection signal of the vibration sensor 29 is equal to or greater than the first threshold value. If the magnitude of vibration is less than the first threshold (No in step S53), dehydration is continued in step S54. On the other hand, after the dehydration retry operation is executed in step S52, when the magnitude of vibration of the vibration detection signal of the vibration sensor 29 detects the first threshold value or more (Yes in step S53), step S55. It is determined whether the number of dehydration retry operations exceeds the set maximum number of repetitions.

  If the number of dehydration retry operations does not exceed the set maximum number of repetitions (No in step S55), the process returns to step S52, and the dehydration retry operation is executed again. On the other hand, when the number of dehydration retry operations exceeds the set maximum number of repetitions (Yes in step S55), an unbalance correction operation is executed in step S56. As described above, when executing the dehydration retry operation, the control device 30 controls the maximum number of repetitions of the dehydration retry operation in the final dehydration process so that the process is larger than the previous dehydration process.

  Here, from the viewpoint of improving the finish of washing clothes, it is most important to properly execute the final dehydration process among a plurality of dehydration processes. In particular, when a finishing agent such as a softening agent is introduced in the rinsing process before the final dehydration process, when the unbalance correction process is executed, the finish that has adhered to the clothing is diluted. It is not preferable. In addition, performing the unbalance correction process in the final dewatering process unnecessarily prolongs the time of the washing operation, so it is desirable that the dewatering succeeds by the dewatering retry operation as much as possible.

  Therefore, also in the sixth embodiment, when the vibration occurrence state of the water tank 5 is detected, it is possible to perform an appropriate process according to the rotation speed of the dehydration tank 7 and which dehydration process, and an unbalance correction operation every time. You can do without having to. As a result, as in the first embodiment, the time required for the unbalance correction operation accompanying the vibration detection of the water tank 5 during the dehydration process is saved as much as possible, and the smooth washing operation can be progressed. An effect can be obtained. In the sixth embodiment, the possibility of successful final dehydration can be increased by increasing the maximum number of repetitions of the dehydration retry operation in the final dehydration process. As a result, overall, it is effective with respect to both the finished state of the washing operation and the time of the washing operation.

(7) Seventh Embodiment FIG. 9 shows a seventh embodiment. In the seventh embodiment, when the dehydration retry operation is performed, the maximum number of repetitions of the dehydration retry operation when the temperature detected by the outside air temperature sensor 33 is low is larger than that when the detection temperature is high. This is different from the fourth embodiment. That is, also in the seventh embodiment, after the dehydration process is started, the processing of step S1 to step S7 is executed in the same manner as in the first embodiment and the like. If the rotational speed of the dewatering tank 7 is equal to or lower than the predetermined rotational speed in step S7 (Yes in step S7), the process proceeds to step S61, and then a dehydration retry operation is performed in step S62.

  In step S61, the maximum number of repetitions of the dehydration retry operation when the detected temperature is low according to the environmental temperature (outside air temperature) detected by the outside air temperature sensor 33 is the detected temperature of the maximum number of repetitions of the dehydration retry operation. It is set to be more than the case. Specifically, when the detected environmental temperature is less than 10 ° C., the maximum number of repetitions of the dehydration retry operation is set to four. When the environmental temperature is 10 ° C. or higher and lower than 20 ° C., the maximum number of repetitions is set to three. When the environmental temperature is 20 ° C. or higher and lower than 30 ° C., the maximum number of repetitions is set to two. When the environmental temperature is 30 ° C. or higher, the maximum number of repetitions is set to one. Thus, after setting the maximum number of times of dehydration retry operation according to the environmental temperature, the dehydration retry operation is executed in step S62.

  After the dehydration retry operation is executed, it is determined in step S63 whether or not the magnitude of the vibration of the vibration detection signal of the vibration sensor 29 is greater than or equal to the first threshold value. If the magnitude of vibration is less than the first threshold value (No in step S63), dehydration is continued in step S64. On the other hand, when the magnitude of vibration of the vibration detection signal of the vibration sensor 29 detects the first threshold value or more (Yes in Step S63), the number of dehydration retry operations is set in Step S65. It is determined whether the maximum number of repetitions has been exceeded.

  If the number of dehydration retry operations does not exceed the set maximum number of repetitions (No in step S65), the process returns to step S62, and the dehydration retry operation is executed again. On the other hand, when the number of dehydration retry operations exceeds the set maximum number of repetitions (Yes in step S65), an unbalance correction operation is executed in step S66. As described above, when executing the dehydration retry operation, the control device 30 performs control so that the maximum number of repetitions of the dehydration retry operation when the temperature detected by the outside air temperature sensor 33 is low is larger than when the detection temperature is high. To do.

  Here, rubber is generally used for the elastic support mechanism 6 that elastically supports the water tank 5, and the rubber softens when the temperature rises. Therefore, the lower the temperature, the better the function of absorbing vibration. Become. Therefore, the lower the environmental temperature, the higher the possibility that the dehydration is successful by the dehydration retry operation. Therefore, with the above configuration, if the environmental temperature is high and the dehydration retry operation is likely to fail, an unbalance correction operation is executed early, and if the environmental temperature is low and the dehydration retry operation is likely to succeed, more dehydration retry operation is performed. Can try.

  Therefore, also in the seventh embodiment, when detecting the vibration occurrence state of the water tank 5, it is possible to perform an appropriate process according to the rotation speed of the dewatering tank 7 and the environmental temperature, and the unbalance correction operation is performed every time. You can do it without it. As a result, as in the first embodiment, the time required for the unbalance correction operation accompanying the vibration detection of the water tank 5 during the dehydration process is saved as much as possible, and the smooth washing operation can be progressed. An effect can be obtained. In the seventh embodiment, the maximum number of repetitions of the dehydration retry operation when the temperature is low is larger than that when the detection temperature is high, so that the dehydration retry operation is repeated unnecessarily as a whole. It is excellent in the effect of reducing time waste.

(8) Eighth Embodiment FIG. 10 shows an eighth embodiment. In the eighth embodiment, the maximum number of repetitions of the dehydration retry operation depends on the type of operation course being executed. Is set. That is, also in the eighth embodiment, after the dehydration process is started, the processes in steps S1 to S7 are performed in the same manner as in the first embodiment. If the rotational speed of the dewatering tank 7 is equal to or lower than the predetermined rotational speed in step S7 (Yes in step S7), the process proceeds to step S71, and then a dehydration retry operation is performed in step S72.

  In step S71, the maximum number of repetitions of the dehydration retry operation is set according to the type of driving course being executed. In this embodiment, as a driving course of washing luck that can be executed by the washing machine 1, there are a fashion course for washing without damaging fashion clothes such as knits, a blanket course for washing blankets, etc. in addition to a standard course for washing ordinary clothes. is there. Furthermore, in the automatic cleaning course, after the end of the rinsing process and before the final dehydration process, the dehydration tank 7 is rotated at a high speed (for the dehydration process) while leaving a certain amount of washing water in the water tank 5. This is a course to which a process of automatically cleaning the outside of the dewatering tank 7 and the inside of the water tank 5 by a water flow generated in the water is added.

  Specifically, in step S71, when the standard course is executed, the maximum number of repetitions of the dehydration retry operation is set to one. When the fashionable wear course is being executed, the maximum number of repetitions of the dehydration retry operation is set to two. When the blanket course is executed, the maximum number of repetitions of the dehydration retry operation is set to three. When the automatic cleaning course is executed, the maximum number of repetitions of the dehydration retry operation is set to four. As described above, the dehydration retry operation is executed in step S72 after the maximum number of repetitions of the dehydration retry operation is set according to the running course being executed.

  In the next step S73, it is determined whether or not the magnitude of the vibration of the vibration detection signal of the vibration sensor 29 is equal to or greater than the first threshold value. If the magnitude of vibration is less than the first threshold value (in step S73). No), dehydration is continued in step S74. When the magnitude of the vibration of the vibration detection signal of the vibration sensor 29 detects the first threshold value or more (Yes in Step S73), in Step S75, the number of dehydration retry operations is set to the set maximum number of repetitions. It is determined whether it has been exceeded. If the number of dehydration retry operations does not exceed the set maximum number of repetitions (No in step S75), the process returns to step S72, and the dehydration retry operation is executed again. On the other hand, when the number of dehydration retry operations exceeds the set maximum number of repetitions (Yes in step S75), an unbalance correction operation is executed in step S76.

  Here, depending on the driving course such as the standard course, the fashionable clothes course, the blanket course, and the automatic cleaning course, the cloth quality of the clothes to be washed is different and the cloth load is different. In the case of the blanket course, since a blanket that easily contains water is targeted, the duration of the dehydration process is originally set to be long. However, if the unbalance correction operation is performed, the time required for dehydration may be significantly increased. In addition, the automatic cleaning course is prone to vibrations (unbalance) during the dehydration process, so dehydration is repeated by repeating the dehydration retry operation without executing the imbalance correction operation as much as possible. There are circumstances that want to lead to success.

  As described above, the driving course in which the unbalance correction operation is not desired to be performed, that is, the blanket course and the automatic cleaning course, is set so that the maximum number of repetitions of the dehydration retry operation is relatively large. Compared to these, for standard courses and fashionable courses that are thought to have no adverse effect even if unbalance correction operation is performed, it is rather efficient to proceed with the dehydration process by performing unbalance correction operation early. It is conceivable that the maximum number of repetitions of the dehydration retry operation is set to be small. Thereby, according to the driving | running | working course in execution, the maximum frequency | count of dehydration retry operation | movement can be set to an appropriate number.

  Therefore, also in the eighth embodiment, when the vibration occurrence state of the water tank 5 is detected, it is possible to perform an appropriate process according to the rotation speed of the dewatering tank 7 and the operation course being executed, and the unbalance correction is performed each time. You can do it without any action. As a result, as in the first embodiment, the time required for the unbalance correction operation accompanying the vibration detection of the water tank 5 during the dehydration process is saved as much as possible, and the smooth washing operation can be progressed. An effect can be obtained. In the eighth embodiment, the maximum number of repetitions of the dehydration retry operation can be set to an appropriate number according to the running course being executed.

(9) Ninth Embodiment, Other Embodiments FIG. 11 shows a ninth embodiment. In the ninth embodiment, the dehydration retry operation or the unbalance correction operation is performed in consideration of the degree of progress of the stroke with respect to the scheduled operation end time when the vibration occurrence state is detected. That is, also in the ninth embodiment, after the dehydration process is started, the processing of step S1 to step S7 is executed in the same manner as in the first embodiment and the like. If the rotational speed of the dewatering tank 7 is equal to or lower than the predetermined rotational speed in step S7 (Yes in step S7), the process proceeds to step S81, and the first dehydration process detects the vibration occurrence state. It is judged whether or not.

  In the case of the first dehydration process (Yes in Step S81), in Step S82, it is predicted that a delay of 1 minute or more will occur at the present time with respect to the scheduled operation end time (the remaining operation time displayed). It is judged whether or not. If a delay of 1 minute or more is expected (Yes in step S82), a dehydration retry operation is executed in step S83. If there is no delay of 1 minute or longer (No in step S82), an unbalance correction operation is executed in step S84.

  On the other hand, when it is not the first dehydration process that the vibration generation state is detected (No in step S81), the process proceeds to step S85, and it is determined whether or not the vibration generation state is detected in the final dehydration process. Is done. In the case of the final dehydration process (Yes in step S85), in step S86, a delay of 3 minutes or more with respect to the scheduled operation end time (remaining operation time displayed) is currently predicted. It is judged whether or not. If a delay of 3 minutes or more is expected (Yes in step S86), a dehydration retry operation is executed in step S87. On the other hand, when it is not the final dehydration process that the vibration generation state is detected (No in step S85), and when a delay of 3 minutes or more is not expected (No in step S86), step S88. Then, an unbalance correction operation is executed.

  Here, in each dehydration process, a delay relative to the scheduled operation end may occur due to the execution of the dehydration retry operation based on the detection of the vibration occurrence state or the execution of the unbalance correction operation. When the degree of delay with respect to the schedule is large, if the unbalance correction operation is further performed, there is a problem that the delay is further increased. Therefore, in such a case, it is possible to perform control so as to reduce the delay from the schedule by executing the dehydration retry operation so that dehydration is as successful as possible. When there is no delay or little delay with respect to the scheduled operation end, the unbalance can be easily eliminated by executing an unbalance correction operation as necessary. Of course, even if the dehydration retry operation is repeated, there is a case where the dehydration is not successful. However, if there is a possibility that the washing operation can be completed at an early stage, that is, as close as possible to the schedule, it can be said that this is emphasized. .

  Therefore, also in the ninth embodiment, when the vibration occurrence state of the water tank 5 is detected, it is possible to perform an appropriate process according to the rotational speed of the dewatering tank 7 and the delay with respect to the scheduled operation end, and each time the This can be done without performing the balance correction operation. As a result, as in the first embodiment, the time required for the unbalance correction operation accompanying the vibration detection of the water tank 5 during the dehydration process is saved as much as possible, and the smooth washing operation can be progressed. An effect can be obtained. In the ninth embodiment, even when the vibration occurrence state is detected, it is possible to reduce the delay with respect to the scheduled operation end.

  In each of the above-described embodiments, the number of rotations of the dewatering tank 7, the number of repetitions of the dehydration retry operation, the first threshold value, the second threshold value (A value) of the rotation number, the outside air temperature and the delay time, and how to classify them. Although the above has been described with specific numerical values, the specific numerical values and the manner of classification are merely examples, and it is needless to say that changes can be made as appropriate. Various changes can be made to the overall hardware configuration of the washing machine 1, the type of operation course, and the like. Furthermore, it is possible to implement a combination of any of the above-described embodiments.

  The several embodiments described above have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 1 is a washing machine, 2 is an outer box, 5 is a water tank, 6 is an elastic suspension mechanism, 7 is a dewatering tank, 9 is a drain valve, 17 is a drive mechanism, 18 is a washing machine motor, 25 is a water supply valve, Reference numeral 28 denotes an operation panel, 29 denotes a vibration sensor, 30 denotes a control device, 31 denotes a rotation sensor, and 33 denotes an outside air temperature sensor (temperature sensor).

Claims (9)

An outer box,
A water tank elastically supported in the outer box;
A dehydration tank rotatably provided in the water tank;
A drive mechanism for rotating the dehydration tank;
A vibration sensor for detecting vibration of the water tank;
A control device for controlling the drive mechanism to execute a washing operation including a dehydration process,
The control device temporarily stops the rotation of the dehydration tank when detecting a vibration generation state in which the vibration detected by the vibration sensor becomes a predetermined magnitude or more during the dehydration process, and then generates the vibration. A washing machine that performs a dehydration retry operation or an unbalance correction operation according to the number of rotations of the dewatering tank at the time of state detection.   When the dehydration retry operation is executed, the control device sets the maximum number of repetitions of the dehydration retry operation in the case where the rotation speed of the dehydration tank is low when the vibration occurrence state is detected as compared with the case where the rotation speed of the dehydration tank is high. The washing machine according to claim 1, wherein the washing machine is also increased.   3. The washing machine according to claim 1, wherein the control device executes an unbalance correction operation when the rotation speed of the dewatering tub when the vibration occurrence state is detected is within a predetermined range corresponding to a secondary resonance mode. . Comprising a capacity detecting means for detecting the capacity of the clothes in the dehydration tank;
The control device, when performing a dehydration retry operation, increases the maximum number of repetitions of the dehydration retry operation when the capacity of the garment detected by the capacity detection unit is small compared to when the capacity of the garment is large. 1. The washing machine according to 1. In the washing operation, a plurality of dehydration processes including an intermediate dehydration process are provided.
2. The washing machine according to claim 1, wherein, when the dehydration retry operation is executed, the control device reduces the maximum number of repetitions of the dehydration retry operation in the intermediate dehydration stroke as compared with other dehydration strokes. In the washing operation, a plurality of dehydration processes including a final dehydration process are provided.
The washing machine according to claim 1 or 5, wherein when the dehydration retry operation is performed, the control device increases the maximum number of repetitions of the dehydration retry operation in the final dehydration process compared to the previous dehydration process. It has a temperature sensor that detects the ambient temperature,
2. The washing machine according to claim 1, wherein, when the dehydration retry operation is performed, the maximum number of repetitions of the dehydration retry operation when the temperature detected by the temperature sensor is low is larger than when the detection temperature is high. A plurality of driving courses are provided in the washing operation, and it is possible to execute the washing operation of the driving course set from them.
The washing machine according to claim 1, wherein when the dehydration retry operation is executed, the control device sets the maximum number of repetitions of the dehydration retry operation according to the running course being executed. At the start of the washing operation, the scheduled operation end time is set,
2. The washing machine according to claim 1, wherein the control device executes a dehydration retry operation or an unbalance correction operation in consideration of a progress degree of a stroke with respect to a scheduled operation end time when the vibration occurrence state is detected.

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