JP3983605B2 - Washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine capable of a rinsing operation including a rinsing intermediate dehydration step and a rinsing step.
[0002]
[Prior art]
In recent years, as life has been rationalized, drum-type fully automatic drying washing machines that can automatically operate from washing to drying are becoming popular as products that meet consumer needs. Conventionally, as this type of fully automatic drying washing machine, the one described in JP-A-10-33878 is known.
[0003]
The driving operation will be described with reference to the flowchart of the driving program shown in FIG . When clothes are put in and driving is started, the capacity is determined by capacity sensing, and the driving time is determined. Then, the water supply valve for washing is turned on, water is supplied to a predetermined water level, and the washing process is performed for a predetermined time. After performing the washing process for a predetermined time, a draining process is performed to drain the washing water (detergent solution). Next, when drainage is completed, the process proceeds to a rinsing intermediate dehydration process, and the detergent liquid contained in the clothes is drained by dehydration (intermediate dehydration) for a predetermined time, and the process proceeds to the rinsing process.
[0004]
In the rinsing step, the water supply valve is turned on to supply water to a predetermined water level. At this time, if the rotational speed of the intermediate dehydration is lower than a predetermined value due to the resistance of the detergent foam, the amount of rinse water is automatically increased or the number of rinses is increased. Then, the rinsing step is shifted to the next step after the operation for a predetermined time.
[0005]
[Problems to be solved by the invention]
By the way, the control in the rinsing process of the washing machine described in the above publication performs control to increase the amount of rinsing water or the number of times of rinsing only when the number of rotations of the intermediate dewatering drum is observed and the foam is completely restricted.
[0006]
However, in a state close to foam restraint even if it is not completely restrained by foam, the washing liquid splashed from the laundry such as clothing foams between the drum and the water tank, and the rotating drum rotates compared to the case where the rotating drum is not restrained by foam. As a result, the rinsing performance is lowered.
[0007]
In addition, in the conventional example described in Japanese Patent Publication No. 3-11240, there is disclosed control in which intermediate dehydration is skipped when bubble restraint is detected, and the process proceeds to the next water supply step (irrigation step). Even when the intermediate dehydration is skipped and the process proceeds to the water supply process, the water level in the water supply process is a normal (predetermined) water level, so even if the rinsing process is repeated a plurality of times, the rinsing performance decreases. .
[0008]
In view of the above problems, the present invention provides a washing machine capable of controlling operation without deteriorating rinsing performance even during intermediate dewatering operation in a state close to foam restraint and when intermediate dewatering is skipped by foam restraint detection. It is aimed.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention sets the rinsing water level in the next step to be higher than a predetermined (normal) water level during intermediate dehydration operation in a state close to foam restriction and when intermediate dehydration is skipped by detecting bubble restriction. By setting, it is possible to ensure a rinsing performance equivalent to a normal rinsing process.
[0010]
Here, the foam restraint may occur due to an unbalance of the laundry during dehydration. That is, the imbalance caused by the laundry being offset toward the drum during dehydration promotes foaming due to vibration, and also causes foam to be restrained easily. Therefore, the detection of the bubble restraint or a state close thereto is performed by assuming that the foam restraint occurs even when the unbalanced state and the state close to the unbalance causing the bubble restraint are detected. Is set higher.
[0011]
That is, the present invention provides an operation control means for controlling a rinsing process including a rinsing intermediate dehydration process and a rinsing process, and a state detection means for detecting a bubble restraint state during intermediate dehydration and / or an unbalanced state causing the same. The operation control means includes a rinse water level for the next process when the state detection means detects a state close to imbalance and / or bubble restraint for a certain period of time and performs intermediate dehydration in the intermediate dehydration process. Is set higher than a predetermined water level .
[0012]
According to the said structure, when the state close | similar to an unbalanced state and bubble restraint is detected at the time of intermediate dehydration of a rinse, the fall of rinse performance can be suppressed by making a rinse higher than a predetermined water level for the next process.
[0013]
In the present invention, the operation control means performs intermediate dehydration when the state detection means detects a state close to imbalance and / or bubble restraint for a certain period of time in the rinsing intermediate dehydration step, so that the rinsing water level is changed from the predetermined water level. high, also skips intermediate dehydration when detecting the unbalance and / or foam constrained state, and in the following for the rinsing step, the or without intermediate dehydration, the order rinsing water level higher than a predetermined level set It is characterized by doing.
[0014]
According to this configuration, the rinsing can be made higher than the predetermined water level for the next step in both the unbalanced state and the state close to the bubble restraint during the intermediate dehydration of the rinse, and the case where the unbalance detection and the foam restraint are detected. , The deterioration of the rinsing performance can be suppressed.
[0015]
Furthermore, the present invention changes the water level depending on the presence or absence of intermediate dehydration in the rinsing step in addition to the above configuration . According to this configuration, since the decrease in the rinsing performance varies depending on the presence or absence of intermediate dehydration, it is possible to perform the rinsing according to the state at that time and suppress the decrease in the rinsing performance without using wasted water.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
<First Embodiment>
FIG. 1 is a schematic perspective view showing a fully automatic drying washing machine according to the first embodiment of the present invention. In the fully automatic drying washing machine, an outer box is arranged on the base 2, and the upper surface of the outer box 1 is covered with a top plate 32. The outer box 1 is formed by bending a decorative steel plate. The top plate 32 is formed of a compression board or the like and is screwed to the outer box 1.
[0018]
FIG. 2 is a detailed view of the operation unit of FIG. An operation panel 11 that is operated by a user is attached to the upper front portion of the outer box 1. The operation panel 11 includes a display unit 11a and a plurality of operation keys 111 to 119, and a control circuit 31 (see FIG. 3) is arranged on the back surface. The display unit 11a is composed of a liquid crystal display device and displays input information and the like.
[0019]
The operation keys 111 to 119 perform an operation for setting operation conditions provided in the fully automatic drying washing machine. A power key 111 turns on / off the fully automatic drying washing machine. When the power key 111 is turned on, the “standard course” washing and drying conditions are displayed on the display unit 11a. In the standard course, conditions for optimally performing the washing process and the drying process are preset in the case of laundry such as cotton and synthetic fiber. The user can select operating conditions such as “dry course” and “blanket course” by pressing the course switching key 114.
[0020]
When the washing key 116 is pressed, it can be set so that only the washing process including the washing process, the rinsing process, and the dehydration process is performed and the drying process is not performed. When the drying key 115 is pressed, only the drying process is set. When the washing key 117, the rinsing key 118, or the dehydration key 119 is pressed, only the washing process, the rinsing process, and the dehydration process are set, respectively.
[0021]
When the operating conditions are set, the operation of the fully automatic drying washing machine is started by turning on the start key 112. When the start key 112 is pressed during operation, the operation of the fully automatic washing machine is temporarily stopped, and when pressed again, the operation is resumed. When the door lock release key 113 is pressed during the temporary stop, the locked state of the open / close door 3 is released, so that additional laundry can be input.
[0022]
FIG. 3 is a side sectional view of the fully automatic drying washing machine. The control circuit 31 stores a control program for controlling the operation of the fully automatic drying washing machine, and when the operation condition is set by the operation keys 111 to 119, the operation of the fully automatic drying washing machine is performed based on the operation condition.
[0023]
Inside the outer box 1, a water tank 4 having an opening 4 a that opens toward the front surface is arranged so as to be inclined downward as it goes rearward. In the water tank 4, a rotating drum 5 having an opening 5 a is coaxially inclined. This inclination improves the view in the drum 5 from the front side.
[0024]
A drive mechanism 9 is attached to the outer surface of the bottom of the water tank 4. The drive mechanism 9 includes a motor including a rotor 9b and a stator 9c in a case 9a. The stator 9c is fixed to the case 9a, and the rotor 9b is fixed to the tank shaft 5d of the drum 5. The tank shaft 5d is supported by a bearing 6 fixed to the case 9a, and since one end is fixed to the drum 5, the drum 5 is rotatable. Thereby, the drive mechanism 9 directly connected to the drum 5 is configured, and the rotation of the rotor 9b directly drives the drum 5 to rotate. Further, rotation detection means 53 for detecting the rotation speed of the rotor 9b is provided, and an inverter motor whose rotation speed is controlled based on the detection result of the rotation detection means 53 is provided.
[0025]
A small hole 5 c is provided in the peripheral wall of the drum 5. The small hole 5 c allows the water tank 4 and the drum 5 to communicate with each other so that washing water can flow between the water tank 4 and the drum 5. A baffle 5b is formed on the inner wall surface of the drum 5 so as to protrude, and the laundry is hooked and lifted by the rotation of the drum 5 and dropped into the washing liquid for washing. The baffle 5 b is fixed to the inner wall of the drum 5 or formed integrally with the drum 5.
[0026]
A fluid balancer 5 e is provided on the outer peripheral edge of the opening 5 a of the drum 5. The fluid balancer 5e is filled with a liquid having a large specific gravity such as salt water, and the fluid moves when the drum 5 rotates to cancel the movement of the center of gravity due to the deviation of the laundry and the washing water. The liquid balancer 5e may be provided on the inner peripheral edge of the drum 5.
[0027]
A packing 10 made of an elastic material such as rubber or soft resin is attached to the periphery of the laundry input port 1a and the opening 4a of the water tub 4 to form an access path for taking in and out the laundry. The opening / closing door 3 is provided with a projecting window 3 a that is in close contact with the packing 10. A part of the front surface of the opening / closing door 3 and the window portion 3a are formed of a transparent member on glass or the like so that the inside of the drum 5 can be visually recognized.
[0028]
When the opening / closing door 3 is closed, the packing 10 closes the access path by bringing the inner peripheral edge 10a into close contact with the peripheral edge of the window 3a. Thereby, the washing water in the water tank 4 is prevented from leaking outside. Further, the packing 10 is provided with a bellows or the like so as to follow and bend according to the swinging of the water tank 4.
[0029]
A detergent case 15 for accommodating detergent is arranged at the upper part in the outer box 1. The detergent case 15 is provided with a passage that passes through the detergent storage portion and a passage that does not pass therethrough, so that the washing water flowing into the detergent case 15 can be switched and distributed. A water supply pipe 12 is led out from the detergent case 15 on one side, and a water supply nozzle 15a supported by the door packing 10 is led out on the other side. The water supply pipe 12 is connected to the water supply valve 13.
[0030]
FIG. 4 is a detailed view of the water supply valve 13. As shown in the figure, the water supply valve 13 has discharge ports 13a and 13b and an inflow port 13c. The inflow port 13c is connected to a water pipe so that city water can be supplied. The discharge port 13a is connected to the water supply pipe 12, discharges city water by driving the water supply valve 13, and the wash water is supplied into the water tank 4 from the water supply nozzle 15a through the detergent case 15. As will be described later, the discharge port 13b of the water supply valve 13 is connected to a drying duct 27 (see FIG. 5) through which hot air circulates, and condenses moisture in the hot air.
[0031]
In FIG. 3, a drainage duct 16 is led out from the outlet 4 c on the bottom surface of the water tank 4. The drainage duct 16a connects between the connection case 17 with the lint filter 17a and the water tank 4, and the drainage duct 16b connects between the connection case 17 and the drainage pump 18. The drainage duct 16c communicates with the outside and drains the washing water to the outside by the operation of the drainage pump 18.
[0032]
The lint filter 17a is made of, for example, a resin formed in a lattice shape or fine fibers formed in a bag shape, and the lint in the wash water is accumulated when the wash water passes therethrough. ing. Further, the lint filter 17a is detachably mounted in the connection case 17, and can be easily removed from the lower portion of the front surface of the outer box 1 together with the cap 17b for easy cleaning.
[0033]
A pressure guide pipe 22 is led out to the air trap 21 branched from the drainage duct 16a. The water level sensor 23 communicates with the water tank 4 via the pressure guiding pipe 22 and the air trap 21, and the pressure (water pressure) due to the water pressure in the water tank 4 is transmitted to the water level sensor 23. The water level sensor 23 includes a coil and a magnetic body, and the magnetic body moves in the coil in accordance with a pressure change due to the water level in the water tank 4. And the inductance of the coil produced by the position of the magnetic body in a coil is detected as an oscillation frequency, and the water level in the water tank 4 is detected. The water level sensor 23 may be provided at any position communicating with the inside of the water tank 4.
[0034]
FIG. 5 is a side sectional view of a washing machine having a part of the configuration different from the fully automatic drying washing machine shown in FIG. Above the water tank 4, a hot air unit 24 for drying the laundry composed of the blower fan 25 and the heater 28 is provided. The warm air unit 24 is arranged in the middle of the path of the drying duct 27 that connects the outlet 4 a facing the opening 4 a of the water tank 4 and the circulation port 4 d provided in the lower part of the water tank 4.
[0035]
Air flows through the drying duct 27 by driving the blower fan 25. At this time, the air heated by the heater 28 is sent into the drum 5 from the outlet 4b. The air in the drum 5 passes through the small hole 5c, passes through the water tank 4, and returns from the circulation port 4d to the drying duct 27.
[0036]
The output of the heater 28 is controlled according to the temperature detected by the temperature sensors 29 a and 29 b attached to the drying duct 27, and warm air at a predetermined temperature is sent into the drum 5. Further, as described above, the discharge port 13 b of the water supply valve 13 is connected to the cooling chamber 33 provided in the middle of the path of the drying duct 27, and the water in the warm air passing through the drying duct 27 by driving the water supply valve 13. It cools and condenses.
[0037]
FIG. 6 shows a control block diagram. The center of the control operation is a microcomputer 50 (hereinafter referred to as a microcomputer). The microcomputer 50 inputs signals from the operation keys 111 to 119, the water level sensor 23 as the water level detection means, the power supply circuit 51, the reset circuit 52, the rotation detection means 53 of the motor 9, and the temperature detection means 54 of the heater 28.
[0038]
In the microcomputer 50, capacity detecting means 55 for detecting and determining the load capacity of clothes, unbalance detecting means 56 for detecting load imbalance during (intermediate) dehydration, and foam restraint during (intermediate) dehydration are detected. A bubble restraint detection means 57 and a timer 58 that counts the process time determined by the capacity determination are provided.
[0039]
For example, the capacity detection means 55 is configured so that the drum drive motor has a predetermined rotational speed based on an input signal from a drum rotation detection means 53 comprising a magnet provided on a driven pulley for driving the drum and a reed switch responsive to the magnet. When energized so as to be obtained, the washing capacity (washing load) in the drum is determined based on the difference from the rotation speed obtained from the drum rotation detecting means 53.
[0040]
The unbalance detection means 56 receives signals from the power supply circuit 51 and the rotation detection means 53 and detects the eccentric amount of the drum from the current value of the motor driving the drum or its change amount. Etc. are used. In addition to this, a configuration in which a variation in the rotation speed of the drum driving motor is detected by a hall sensor or a tachometer may be employed.
[0041]
The bubble restraint detecting means 57 detects the current value of the motor driving the drum, like the unbalance detecting means 56, and a current transformer or the like is used. In addition to this, a light bubble sensor provided at the entrance and exit of the drying duct 27 of the water tank may be used.
[0042]
Here, in the state detection means composed of the unbalance detection means 56 and the bubble restraint detection means 57, the unbalance and the foam restraint detection and the state close to the unbalance and the foam restraint using two threshold values (set values), respectively. Detection. The first threshold value (set value) is a value to be detected in a state close to imbalance and bubble restraint. For example, when a current value of 6A is detected in the intermediate dehydration process and more, the next process is rinsed. In the process, it is used to set the water level higher than the predetermined water level. The second threshold value (setting value) is a value for detecting the unbalanced state and the bubble restraint state. When detected, it is used to determine whether or not to skip intermediate dehydration.
[0043]
On the output side of the microcomputer 50, as described above, each load is operated by the load drive circuit 59 according to the state determined by the microcomputer 50, and the motor 9, the water supply valves (for drying) 13, 13b, the heater 28, The blower fan 25, the drainage pump 18 and the like are operated, and the operation is sequentially shifted to washing, rinsing, dehydration, and drying. The operation content is displayed on the display unit 11a, and the buzzer 60 notifies the user when the operation is completed or when an error occurs.
[0044]
Next, the control operation of the above configuration will be described with reference to the flowchart shown in FIG. When the laundry is loaded from the laundry loading port 1a and the open / close door 3 is closed, the inner peripheral edge 10a of the packing 10 is brought into close contact with the peripheral edge of the window 3a of the open / close door 3 and the water tank 4 is sealed. Then, when the power on / off 111 of the operation key is pressed and the start / pause 112 is pressed, capacity sensing for determining the load capacity starts.
[0045]
When the load capacity is determined by the capacity sensing, the operation time corresponding to the capacity is displayed on the display unit 11a, and the washing process starts. When the washing process starts, the discharge port 13 a of the water supply valve 13 is opened and water is sent to the detergent case 15. The washing water containing the detergent in the detergent case flows into the water tank 4 and the drum 5 from the water supply nozzle 15a. When the water level in the water tank 4 reaches a predetermined water level, the water level sensor 23 detects and the water supply valve 13 is closed. Then, the motor 9 is driven to control the rotation of the drum 5 according to a predetermined washing chart, and the washing process is performed for a predetermined time. After the washing is finished, the washing liquid is drained by the drain pump 18 and the process proceeds to the rinsing process.
[0046]
In the rinsing step, intermediate dehydration is performed by driving the motor 9 while operating the drain pump 18. When the current value of the motor 9 is higher than the set value (6A in this embodiment) for a certain period of time (30 seconds in this embodiment) during high-speed rotation during intermediate dehydration, the state is close to an unbalanced state or bubble restraint. Judge that it is dehydrated. Then, after performing intermediate dehydration for a predetermined time, the process proceeds to a rinsing step and water supply begins.
[0047]
When it is determined that the intermediate dehydration is in an unbalanced state or a state close to foam restraint, the rinsing water level is set higher than a predetermined value (in this embodiment, higher than a predetermined water level of 20 mm), and when this high water level is detected, the water supply valve 13 is turned on. Close and rinse for a predetermined time. If there is a rinsing step in the next step, the operation is performed in the same manner as described above, and the process proceeds to the final dehydration step.
[0048]
Thus, in the rinsing step, when it is detected that the intermediate dehydration is performed in an unbalanced state or in a state close to bubble restraint, the rinsing water level is made higher than a predetermined water level for the next step, so that the user's Rinsing performance equivalent to that when operating without problems or abnormalities such as normal washing, rinsing, and dehydration can be ensured even during misuse (such as adding more detergent than usual) or abnormalities due to cloth conditions.
[0049]
<Second Embodiment>
FIG. 8 is a flowchart showing the control operation of the fully automatic drying washing machine according to the second embodiment. Since the structure of the fully automatic drying washing machine shown in FIGS. 1 to 6 and the washing process from putting in clothes are the same as those in the first embodiment, description thereof will be omitted.
[0050]
The control operation of this embodiment will be described with reference to FIG. 8. After the washing process is executed for a predetermined time and the washing process is completed, the washing liquid is drained by the drain pump 18 and the process proceeds to the rinsing process.
[0051]
In the rinsing step, intermediate dehydration is performed by driving the motor 9 while operating the drain pump 18. If the motor 9 normally starts up during the intermediate dehydration, the current value of the motor 9 during high-speed rotation becomes higher than the set value (6A in this embodiment) for a certain time or longer (30 seconds in this embodiment). It is determined that the water is dehydrated in a balanced state or in a state close to bubble restraint. Then, after intermediate dehydration is performed for a predetermined time, the process proceeds to a rinsing step, and water supply begins.
[0052]
In addition, when the clothes are not balanced and the foam is restrained, the intermediate dehydration does not start up, and the imbalance and foam restraint of the clothes are detected by the unbalance detection means 56 and the foam restraint detection means 57 of the microcomputer 50 to prevent abnormal vibration. Therefore, do not start up intermediate dehydration. If this unbalance detection or bubble restraint detection is tried several times (three times in the present embodiment) and still unbalance and foam restraint are detected, the process skips to the rinsing process without performing intermediate dehydration, and water supply begins. .
[0053]
When this intermediate dehydration detects an unbalanced state or a state close to bubble restraint, the rinsing water level is set higher than the predetermined water level by 20 mm. Further, when the imbalance detection or the bubble restraint detection is performed and the intermediate dehydration is skipped, the water level for rinsing is set higher than the predetermined water level by 30 mm.
[0054]
When this high water level is detected, the water supply valve 13 is closed and rinsing is performed for a predetermined time. If there is a rinsing process in the next process, the operation is performed in the same manner as described above, and the process proceeds to the final dehydration process.
[0055]
Thus, the water level that makes the rinsing water level higher than the predetermined level for the next step when it is detected that intermediate dehydration is being performed in an unbalanced state or a state close to foam restraint and when unbalance or foam restraint is detected. By changing the above, it is possible to distinguish the difference in the amount of detergent liquid discharged between the intermediate dehydrated one and the skipped one, and the rinsing can be performed efficiently without using wasted water. In addition, the same rinsing performance as when operating without problems or abnormalities, such as normal washing, rinsing, and dehydration when the user misuses (such as adding more detergent than usual) or when there is an abnormality due to cloth condition can do.
[0056]
In addition, this invention is not limited to the said embodiment, Of course, correction and a change can be added within the scope of the present invention. For example, although the drum type fully automatic drying washing machine has been described in the above embodiment, it goes without saying that the present invention can be applied to various washing machines such as a drum type washing machine that performs only washing and a vertical type fully automatic washing machine.
[0057]
Moreover, in the said embodiment, although unbalance detection or bubble restraint detection was tried several times (for example, 3 times), when unbalance and foam restraint were detected still, control which skips intermediate skip was explained. Of course, control for adding an unbalance correction step and a bubble restraint elimination step may be performed while repeating this unbalance or bubble restraint detection several times. Furthermore, in the above-described embodiment, the configuration provided with both the unbalance detection means and the bubble restraint detection means is illustrated, but among these, only the unbalance detection means and the foam restraint detection means are provided. May be.
[0058]
【The invention's effect】
As is apparent from the above description, according to the present invention, when intermediate dehydration is performed in an unbalanced state or near bubble restraint during intermediate dehydration, the user misuses by increasing the rinse water level. Even when there is an abnormality due to time (detergent is added more than usual) or a cloth condition, it is possible to ensure the same rinsing performance as when operating without problems / abnormalities like normal washing / rinsing / dehydration.
[Brief description of the drawings]
1 is a schematic sectional side view showing a full automatic dry washer schematic perspective view showing an external structure of a detailed view of the operation unit of FIG. 1. FIG 3 shows the internal structure of Figure 1 which is an embodiment of the present invention FIG. 4 is a detailed view around the water supply in FIG. 1. FIG. 5 is a schematic side sectional view showing the internal structure of FIG. 1. FIG. 6 is a block diagram of the control unit in FIG. Operation program flowchart [FIG. 8] Operation program flowchart of the rinsing process in the second embodiment [FIG. 9] Conventional operation program flowchart [Explanation of symbols]
1: Outer box 1a: Laundry slot 2: Bottom base 3: Open / close door 4: Water tank 5: Drum 9: Drive device 10: Packing 11: Operation panel 11a: Display unit 12: Water supply pipe 13: Water supply valve 13b: Drying Water supply valve 15: detergent case 16: drainage duct 17a: lint filter 17: connection case 18: drainage pump 23: water level sensor 24: hot air unit 25: blower fan 27: drying duct 28: heaters 29a, 29b: temperature Sensor 31: Control circuit 32: Top plate 33: Cooling chamber 50: Microcomputer 55: Capacity detection means 56: Unbalance detection means 57: Bubble restraint detection means

Claims (3)

An operation control means for controlling a rinsing process including a rinsing intermediate dehydration process and a rinsing process, and a state detection means for detecting a bubble restraint state during intermediate dehydration and / or an unbalanced state causing the same,
The state detection means includes a first threshold value for detecting a state close to unbalance and / or a state close to bubble restraint, and the first threshold for detecting an unbalance state and / or a state of bubble restraint. Set a second threshold value higher than the threshold value of 1,
The operation control means detects, for a certain period of time , a state in which the state detection means exceeds the first threshold and is close to an unbalance and / or close to bubble restraint in the rinsing intermediate dehydration step. The washing machine is characterized in that intermediate dehydration is performed and the rinsing water level is set higher than a predetermined water level for the next process. An operation control means for controlling a rinsing process including a rinsing intermediate dehydration process and a rinsing process, and a state detection means for detecting a bubble restraint state during intermediate dehydration and / or an unbalanced state causing the same,
The state detection means includes a first threshold value for detecting a state close to unbalance and / or a state close to bubble restraint, and the first threshold for detecting an unbalance state and / or a state of bubble restraint. Set a second threshold value higher than the threshold value of 1,
The operation control means detects, for a certain period of time , a state in which the state detection means exceeds the first threshold and is close to an unbalance and / or close to bubble restraint in the rinsing intermediate dehydration step. In this case, the intermediate dehydration is performed and the rinse water level is made higher than the predetermined water level, and the intermediate dehydration is skipped when the state detection means exceeds the second threshold and detects an unbalance and / or bubble restraint state. In the next rinsing step, the rinsing water level is set higher than a predetermined water level regardless of the presence or absence of the intermediate dehydration. Said operation control means, in the rinsing step for, before for rinsing water level when performing an intermediate dehydrating in step, wherein, characterized in that set high rinsing water level in case you skip intermediate dehydration in the previous step Item 3. A washing machine according to Item 2 .

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