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WO2018147587A1 - Lave-linge - Google Patents

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Publication number
WO2018147587A1
WO2018147587A1 PCT/KR2018/001313 KR2018001313W WO2018147587A1 WO 2018147587 A1 WO2018147587 A1 WO 2018147587A1 KR 2018001313 W KR2018001313 W KR 2018001313W WO 2018147587 A1 WO2018147587 A1 WO 2018147587A1
Authority
WO
WIPO (PCT)
Prior art keywords
waterproof
rotation
processor
water
washing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/001313
Other languages
English (en)
Korean (ko)
Inventor
시노하라노부히코
오야기아츠시
타키타히로키
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2017086959A external-priority patent/JP6941967B2/ja
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to US16/485,151 priority Critical patent/US11149372B2/en
Priority to KR1020197013478A priority patent/KR102492151B1/ko
Publication of WO2018147587A1 publication Critical patent/WO2018147587A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user

Definitions

  • the present invention relates to a technique for preventing abnormal vibrations that may occur in dehydration processing of a washing machine when a waterproof sheet or the like is accidentally incorporated into laundry.
  • washing machines are generally designed to automatically perform a series of processes for washing, rinsing, dehydration, and drying (so-called automatic washing machines).
  • automatic washing machines almost no water, such as clothes subjected to waterproofing or water repellent, impervious products (e.g., raincoats or nylon bed covers, etc.) or a little laundry even if the water passes (generally here Since waterproof clothing is usually difficult to dehydrate and there is a possibility that abnormal vibration may occur during dehydration, attention is paid to not performing dewatering treatment.
  • Patent Document 1 proposes a method of early detecting an abnormal state due to waterproof clothing during dehydration in a washing machine (so-called drum type washing machine) in which a drum accommodating laundry rotates about a horizontal axis.
  • the washing machine tank is provided with an acceleration sensor for detecting the vibration in the vertical direction (the radial direction of the drum).
  • the acceleration sensor detects the vibration value of the water tank and controls the rotation of the drum to increase the rotation speed step by step while comparing with the preset threshold value, and the vibration value is larger than the threshold value. Determines that the condition is abnormal.
  • Patent Literature 4 and Patent Literature 5 disclose a washing machine based on the amount of cloth (initial amount of cloth) detected before the washing process and the amount of cloth (first and second dehydration cloth) detected after the rinsing process in a fully automatic washing machine.
  • a method of determining whether water is contained in clothing contained in a dehydration tank (drum) (whether or not it contains a function bubble) and performing a dehydration process based on the determination result have been proposed.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2012-170686
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2014-64918
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2014-64919
  • Patent Document 4 Japanese Patent Application Laid-Open No. 2015-165938
  • Patent Document 5 Japanese Patent Application Laid-Open No. 2015-165941
  • Patent Literature 1 it is difficult to accurately predict abnormal vibration caused by waterproof clothing with only the vibration value of the water tank.
  • the vibration due to the bias of general clothing is large or gradually increases from the beginning, whereas the abnormal vibration due to waterproof clothing occurs when the remaining water starts to move suddenly during dehydration. As a large amount of water moves, the vibration of the tank increases at once.
  • Patent Documents 2 and 3 Since the ratio of waterproof clothing mixed with general laundry is not the same, and the weight change of general laundry is greatly influenced according to the material and type of the laundry, the methods of Patent Documents 2 and 3 are low in precision and are easy to cause false detection. .
  • an object of the present invention is to provide a washing machine capable of preventing abnormal vibrations during dehydration caused by waterproof clothing with high precision.
  • the present invention relates to a washing machine that performs dehydration treatment by rotating a rotary bath accommodating laundry.
  • Washing machine a rotating tub for receiving laundry;
  • a vibration sensor attached to a water tank supporting the rotating tank therein and capable of detecting vibrations in a plurality of directions;
  • a processor for controlling the rotation of the rotating tub and determining the type of vibration based on the detection value of the vibration sensor to determine whether there is waterproof clothing in the laundry.
  • the processor at the start of the dehydration process, performs two acceleration processes for accelerating the rotation of the rotating tank in the low rotation region, by comparing the vibration type in the two acceleration processes, the presence or absence of waterproof clothing in the laundry Can be determined.
  • the processor may determine the presence or absence of the waterproof garment based on at least one change in the vibration state or the unbalance position in the first acceleration process and the second acceleration process.
  • two acceleration processes for accelerating the rotation of the rotating tub in the low rotation region are performed, and the detection values in the plurality of directions detected by the vibration sensor are set at the same rotation speed during the two acceleration processes.
  • the washing machine to determine the presence or absence of the waterproof clothing in comparison.
  • the processor determines two magnitude values for each acceleration process by digitizing the magnitude relations of the detection values in the plurality of directions detected in each of the acceleration processes, and compares the amount of change in these magnitude relationships with a preset reference value. The presence or absence of the waterproof clothing can be determined.
  • the detection values in the plurality of directions may be detection values in two directions, horizontal and vertical.
  • the processor may perform an absolute value smoothing process and a smoothing process on each of the detected values in the plurality of directions to convert the values into comparable values.
  • the processor subtracts each of the detected values in the plurality of directions in which the absolute value and smoothing process is performed in each of the two acceleration processes, and digitizes the magnitude of the output signal between the respective directions in each acceleration process.
  • the two magnitude relationships can be determined.
  • the processor may set the spin speed of dehydration based on a determination result of the presence or absence of the waterproof garment.
  • the processor may determine the presence or absence of the waterproof garment based on a rate of change of the level of the water tank during a predetermined time when watering or draining water.
  • the washing machine may further include a water level sensor configured to detect a water level of the water tank based on a change in water pressure of the water collected in the water tank, and the processor may determine the rate of change of the water level based on a detection value of the water level sensor.
  • a water level sensor configured to detect a water level of the water tank based on a change in water pressure of the water collected in the water tank
  • the processor may determine the rate of change of the water level based on a detection value of the water level sensor.
  • the processor may determine the rate of change of the water level at least twice or more at different timings.
  • the processor may also determine the presence or absence of the waterproof garment based on the ratio of the two water level change rates at different timings.
  • the processor may determine the rate of change of the water level at the timing of the water level at the bottom of the bottom of the rotating tub.
  • the washing machine further includes a pulsator that rotates inside the rotary bath and stirs the laundry when the washing process or the rinsing process is performed.
  • the processor further includes the presence or absence of the waterproof garment based on the water level change rate during water supply. When it is determined that the waterproof clothing is present, the rotation speed of the pulsator may be increased to a predetermined rotation speed or more during the washing or rinsing treatment performed after water supply.
  • the processor is based on the signal output from the vibration sensor, the motion component of a period longer than the rotation period of the rotary tank is detected, or a sign of abnormal vibration when the rate of change of the vibration amplitude of the tank is greater than a predetermined reference value You can judge that there is.
  • the washing machine includes a lid for opening and closing the inlet through which laundry is put in and out; An opening / closing sensor for detecting an open / closed state of the lid; Resume switch for resuming the interrupted processing; further comprising, when the resumption switch is operated after the opening and closing of the lid, the processor can return the maximum rotational speed of the rotating tank in the dewatering process to the initial state.
  • the processor lowers the maximum rotational speed of the rotating tub in the dehydration process performed after the determination, or generates an alarm through a notification buzzer, An error message may be displayed on the display panel, an error message may be notified to the terminal device, or driving may be stopped.
  • the washing machine includes a vibration sensor attached to a water tank supporting the rotating tank therein and capable of detecting vibrations in a plurality of directions; And a processor having a rotation control unit for controlling rotation of the rotating tub and a first waterproof garment determination unit for determining the presence or absence of waterproof garments in the laundry based on a detection value of the vibration sensor. And at the start of the dehydration process, by the rotation control section, two acceleration processes, which accelerate the rotation of the rotating tub in the low rotation region, are performed, and the first waterproof garment determining section is the same as the preset two acceleration processes. The presence or absence of the waterproof garment is determined by comparing and calculating the detected values in the plurality of directions detected by the vibration sensor in the rotation speed range.
  • this washing machine at the start of the dehydration process, two acceleration processes for accelerating the rotation of the rotating tub are performed in the low rotation region where abnormal vibration does not occur even if waterproof clothing is mixed. Then, the presence or absence of the waterproof garment is determined by comparing the detection values of the plurality of directions detected by the vibration sensor in the preset rotation speed zones of the two acceleration processes by the first waterproof garment determination unit.
  • the vibration of the rotating tub in the dehydration process has a predetermined pattern, and in the case of whether or not the waterproof clothing is mixed in the laundry, by comparing the pattern of the vibration in two acceleration processes, The presence or absence can be judged with high precision.
  • the first waterproof clothing determining unit realizes the determination, and by providing the first waterproof clothing determination unit in the processor, it is possible to prevent abnormal vibration in the dehydration process caused by the waterproof clothing. By using the detection values of a plurality of directions, the detection accuracy can be further improved.
  • the first waterproof garment determining unit calculates the magnitude relationship of the detected values in the plurality of directions detected in each of the acceleration processes, calculates two magnitude relationships for each acceleration process, and calculates the amount of change in these magnitude relationships values.
  • the presence or absence of the waterproof garment may be determined by comparing with the set reference value.
  • the processor may be provided with a pre-waterproof clothing determining unit that determines the presence or absence of the water-resistant clothing based on a water level change rate indicating a change amount of the water tank during a predetermined time during water supply or drainage. .
  • a water level sensor for detecting the water level of the water tank based on the change in the water pressure of the water stored in the water tank, wherein the pre-waterproof clothing determination unit to calculate the water level change rate based on the detection value of the water level sensor It's okay.
  • the pre-waterproof clothing determining unit performs the calculation of the water level change rate at least twice or more at different timings, and the pre-waterproof clothing determining unit determines the ratio of the two water level change rates at different timings. It is okay to determine the presence or absence.
  • the pre-waterproof clothing determining unit may calculate the water level change rate at a timing at which the water level is below the bottom of the rotating tub.
  • the pre-waterproof clothing determining unit determines the presence or absence of the water-resistant clothing based on the rate of change of water level at the time of water supply.
  • the rotation control unit may increase the rotation speed of the pulsator above the preset rotation speed in the washing process or rinsing process performed after water supply.
  • a drive motor having an annular stator and two rotors each independently rotatable with respect to the stator, one side of the rotor being connected to the rotating tub, and the other side of the rotor being the pulsator. It is desirable to be connected to.
  • the rotation control section may be made to lower the maximum rotational speed of the rotating tub in the dehydration process performed after the determination to be less than or equal to the predetermined rotational speed.
  • the processor may have a sign detecting unit that detects a sign of abnormal vibration of the water tank generated in the dehydration process based on the detected value of the vibration sensor.
  • predetermined notification may be given or the driving may be stopped.
  • a lid for opening and closing the inlet through which laundry is put in and out, an opening / closing sensor for detecting the opening / closing state of the lid, and a resume switch for resuming the interrupted processing, wherein the resume switch is operated after opening and closing the lid.
  • the rotation control unit may return the maximum rotational speed of the rotating tank in the dewatering process performed thereafter to the initial state.
  • a communication unit for enabling wireless communication with an external terminal device may be provided, and notification information may be transmitted to the terminal device through the communication unit.
  • This invention also relates to the washing machine which performs dehydration process by rotating the rotating tank which accommodated laundry.
  • the washing machine includes a rotation control unit for controlling the rotation of the rotating tub, and a processor having a second waterproof garment determining unit configured to determine whether there is waterproof clothing in the laundry based on the rotation speed of the rotating tub.
  • the rotation control process is performed by the rotation control section to accelerate and maintain the rotation of the rotating tub in the low rotation region up to a predetermined maintenance rotation speed.
  • the said 2nd waterproof clothing determination part determines the presence or absence of the said waterproof clothing based on the rotation shake amount which generate
  • this washing machine it is possible to determine the presence or absence of the waterproof clothing from the difference in the inertia of the rotating tub. For example, when the waterproof clothing included in the laundry sticks to the rotating tub and water is difficult to drain, the presence or absence of the waterproof clothing is highly accurate. It can be determined.
  • the rotation of the rotating tub is preferably performed by the rotation control unit controlling the drive motor, and the second waterproof garment determining unit detects the amount of rotation shake from the control voltage of the drive motor.
  • the second waterproof garment determining unit includes a preset reference value, and when the rotation shake amount exceeds the reference value, it is acceptable to determine that the waterproof garment exists.
  • the reference value can be adjusted according to the situation, the reliability of the determination can be ensured, and the generality is also excellent.
  • the second waterproof garment determining unit includes a plurality of the reference values set at every predetermined time after reaching the holding rotational speed, and compares the reference value with each of the rotation shake amounts corresponding to the reference values, In one comparison, when the amount of rotation shake exceeds the reference value, it is preferable to determine that the waterproof garment exists.
  • a second rotation holding step of accelerating and holding up to a second holding speed lower than the holding speed is performed by the rotation control part, and the processor Determining that there is no waterproof clothing based on an increase ratio ratio of the increase ratio of the rotation shake amount to the increase ratio of the second shake amount generated when the rotating tub reaches the second holding rotation speed. It is preferable to further have a 1st false detection avoidance part, and when it is determined that there is no waterproof clothing by the said 1st false detection avoidance part, it is preferable not to make determination by the said 2nd waterproof clothing decision part.
  • the said 1st false detection avoidance part contains a preset 1st threshold value and the said increase ratio ratio exceeds the said 1st threshold value, it is good to make it determine that there is no waterproof clothing.
  • the first threshold value can be adjusted according to the situation, the reliability of the false detection determination by the first false detection avoiding unit can be ensured, and the versatility is also excellent.
  • a vibration sensor attached to a water tank supporting the rotating tank therein and capable of detecting vibration
  • the processor is configured to detect a detected value detected by the vibration sensor at a predetermined rotational speed at the start of the dehydration process.
  • the determination by the second waterproof garment determination unit is not performed. More preferably.
  • the 2nd waterproof clothing determination part since the pattern which becomes a factor of a misdetection can be excluded by a mechanism different from a 1st false detection avoidance part, it is waterproof by the 2nd waterproof clothing determination part. The accuracy of determining whether the clothing is present can be further improved.
  • the second false detection avoiding unit includes a plurality of second thresholds preset in correspondence to different detection directions and / or different rotational speeds of the vibration sensor, and the second threshold and the second threshold It is preferable to compare each detected value of the vibration sensor corresponding to the value, and to determine that there is no waterproof garment when the detected value exceeds the second threshold in any one comparison.
  • the second threshold can be adjusted according to the situation, the reliability of the false detection determination by the second false detection avoiding unit can be ensured, and the versatility is also excellent.
  • the number of judgments can be increased efficiently, and a high precision judgment can be performed.
  • the rotation control unit lowers the maximum rotational speed of the rotating tub in the dehydration process performed after the determination or lowers the preset rotational speed or less. For example, predetermined notification may be performed.
  • the present invention relates to a washing machine having a rotating tank rotatably disposed in a water tank, a driving unit for rotating the rotating tank and a processor for controlling the driving unit to perform a dehydration process.
  • the washing machine includes a load detector that detects the rotational load of the rotating tub, an arithmetic unit that calculates the variation of the rotational load in a predetermined period during the dehydration process based on a detection result of the load detector, and a calculation result of the arithmetic unit. And a judging section for judging whether or not a sign of abnormal vibration is present.
  • the determination part judges the presence or absence of the sign of abnormal vibration (specifically, the presence or absence of the waterproof garment which sealed water) based on the variation amount of the said rotational load in the predetermined period during a dehydration process.
  • the amount of change in the rotational load that is, the acceleration / deceleration load of the rotation including the torque voltage of the motor becomes relatively small.
  • the rotation speed is increasing at the constant speed, since water is discharged in accordance with the increase in the rotation speed, the amount of change in the acceleration / deceleration load of the rotation gradually decreases as the weight of the laundry is reduced.
  • the amount of change in the rotational acceleration / deceleration load is large.
  • the weight of the laundry is not reduced as compared with the case of ordinary garment. Therefore, the amount of change of the acceleration / deceleration load of rotation becomes relatively large.
  • this determination is made to refer only to the detection result in the dehydration process, it can respond to the situation which performs only a dehydration process, for example, without performing a washing process or a rinsing process. Since such a situation is particularly assumed for waterproof garments, it is effective in preventing abnormal vibrations caused by waterproof garments.
  • the indication can be suitably determined.
  • a plurality of said predetermined periods are set during said dehydration process, and said calculating part calculates the fluctuation amount every said predetermined period, calculates the index which shows the average value of the fluctuation amount, and the said determination part is based on the said index value And the predetermined value, and when the average value is larger than the predetermined value, it may be determined that there is a sign of abnormal vibration.
  • the "average value" of the variation includes the mean of the variation and the geometric mean.
  • the calculation unit calculates an index indicating the average value based on the variation amounts calculated in the plurality of predetermined periods.
  • the determination unit compares the average value and the threshold value of the variation amount based on the index. And when an average value is larger than a predetermined value, it has a sign of abnormal vibration, In other words, it is judged that the laundry contains the waterproof garment which sealed water.
  • a rotating tank disposed rotatably in a water tank, a driving unit for rotating the rotating tank, a processor for controlling the driving unit to perform a dehydration process, a load detecting unit detecting a rotating load of the rotating tank,
  • a washing machine having a calculating unit for calculating an average of the rotational loads in a predetermined period during the dehydration process based on the detection result of the load detecting unit, and a determining unit for determining the presence or absence of signs of abnormal vibration based on the calculation result of the calculating unit. You may also use.
  • the determination part judges the presence or absence of the sign of abnormal vibration (specifically, the presence or absence of the waterproof garment which sealed water) based on the average of the said rotational load in the predetermined period during a dehydration process.
  • this determination is made to refer only to the detection result in the dehydration process, it can respond to the situation which performs only a dehydration process, for example, without performing a washing process or a rinsing process. Since such a situation is particularly assumed for waterproof garments, it is effective in preventing abnormal vibrations caused by waterproof garments.
  • the indication can be suitably determined.
  • a rotating tank disposed rotatably in a water tank, a driving unit for rotating the rotating tank, a processor for controlling the driving unit to perform a dehydration process, a load detecting unit detecting a rotating load of the rotating tank,
  • a washing machine having a calculation unit for calculating the maximum value of the rotary load in a predetermined period during the dehydration process based on the detection result of the load detection unit, and a determination unit for determining the presence or absence of signs of abnormal vibration based on the calculation result of the calculation unit. You may also use.
  • the determination part judges the presence or absence of the sign of abnormal vibration (specifically, the presence or absence of the waterproof garment which sealed water) based on the maximum value of the said rotational load in the predetermined period during a dehydration process.
  • this determination is made to refer only to the detection result in the dehydration process, it can respond to the situation which performs only a dehydration process, for example, without performing a washing process or a rinsing process. Since such a situation is particularly assumed for waterproof garments, it is effective in preventing abnormal vibrations caused by waterproof garments.
  • the indication can be suitably determined.
  • the processor may control the operation of the drive unit to rotate the rotating tank at a predetermined rotation speed or less in the dehydration process.
  • a processor when the waterproof garment which sealed water was accommodated in the rotating tank, and it is determined that there is a sign of abnormal vibration, a processor is made to rotate the rotating tank below predetermined rotation speed in a dehydration process.
  • the maximum rotation speed of the rotating tank in a normal dehydration process is set to about 700-1000 rpm
  • the maximum rotation speed of the rotating tank in a dehydration process is mentioned, for example. It can be set to about 500rpm.
  • the dehydration process can be completed without stopping the operation of the washing machine while preventing the occurrence of abnormal vibration caused by the watertight garments which contain the water.
  • the load detection unit may be configured to perform the detection of the rotational load when the rotational speed of the rotating tub is rising.
  • the processor controls the drive unit, thereby preliminary dehydration process of raising the rotating tank to a predetermined first rotational speed and rotating the rotational tank to maintain the first rotational speed, and the rotational tank than the first rotational speed.
  • a main dehydration process is carried out in order to raise the predetermined second rotational speed and rotate to maintain the second rotational speed, and the load detection unit performs the rotation in both the preliminary dewatering process and the main dewatering process.
  • the load may be detected.
  • the washing machine of the present invention it is possible to prevent abnormal vibration at the time of dehydration caused by the waterproof garment with high precision.
  • FIG. 1 is a schematic perspective view showing the overall configuration of a washing machine in the first embodiment.
  • FIG. 2 is a schematic longitudinal cross-sectional view showing the internal structure of the washing machine.
  • FIG. 3 is a block diagram illustrating a relationship between a processor and a device of a washing machine.
  • (A)-(e) is a figure which shows the vibration type, such as a rotating tank, in dehydration process.
  • FIG. 6 is a flowchart showing the flow of the determination processing by the first waterproof garment determining unit.
  • FIG. 7 is a diagram for explaining two acceleration processes at the start of the dehydration process.
  • FIG. 8 is a diagram showing an example of horizontal and vertical angle detection values of the vibration sensor in each of the main spin and the pre spin. (a) shows only the case of general garment, and (b) shows the case where waterproof garment is mixed.
  • FIG. 9 is a view for explaining the vibration type in the case where waterproof clothing is mixed in the laundry and a catcher state is generated.
  • 13 is a graph showing the rate of change of water level of the general garment and the change of the level of water level clothing.
  • FIG. 14 is a flowchart showing the flow of the determination processing by the pre-waterproof clothing determination unit.
  • 15 is a flowchart of detecting a sign of abnormal vibration by the rhythm detection unit.
  • Fig. 16 is a flowchart of detecting a sign of abnormal vibration by the change rate detecting unit.
  • 17 is a side sectional view showing a configuration of a drive motor included in a washing machine of an application example.
  • Fig. 18 is a block diagram showing the main relationship between the processor and each device of the washing machine in the second embodiment.
  • 21 is an enlarged view of a part of the rotation maintenance process, and is an explanatory diagram for calculating the rotation shake amount.
  • 22 is a diagram illustrating the frequency distribution of the rotation shake amount at the eleventh comparison point.
  • 24 is a diagram illustrating an increase ratio ratio of various sample data.
  • 25 is a diagram illustrating acceleration detection values of various sample data, (a) is a horizontal acceleration detection value in the first rotation region, and (b) a vertical acceleration detection value in the first rotation region. (C) has shown the acceleration detection value of the horizontal direction in a 2nd rotation area, (d) has shown the acceleration detection value of the vertical direction in a 2nd rotation area, respectively.
  • FIG. 27 is a diagram illustrating a frequency distribution of the amount of rotational shake at the eleventh comparison point when the erroneous detection is avoided.
  • Fig. 28 is a block diagram showing the main relationship between the processor and each apparatus of the washing machine in the third embodiment.
  • 29 is a schematic structural diagram of a processor.
  • FIG. 30 is a diagram illustrating a dehydration profile of the dehydration process.
  • 32 is a view comparing the state of the general garment before and after the preliminary dehydration process.
  • 33 is a view comparing the state of the waterproof garment before and after the preliminary dehydration process.
  • Fig. 34 is a flowchart showing processing relating to a sign determination of abnormal vibration.
  • 35 is a diagram illustrating a dehydration profile when it is determined that there is a sign of abnormal vibration.
  • FIG. 1 and 2 show the washing machine of the present embodiment.
  • This washing machine is a so-called vertical type automatic washing machine, and an inlet 1a for opening and closing with a lid 1b is provided on the upper portion of the rectangular box-shaped case 1.
  • the laundry C is withdrawn through this inlet 1a.
  • the operation part 2 is provided in the back of the inlet 1a, and when a user operates the operation part 2, each process of "water supply”, “washing”, “rinse”, and “dehydration” can be performed automatically and continuously. It is supposed to be.
  • the water tank 10 Inside the case 1, the water tank 10, the rotating tank 20, the drive motor 30, the pulsator 40, the balancer 50, the processor 60, etc. are provided.
  • the water tank 10 is comprised from the bottomed cylindrical container opened upward and is arrange
  • the rotating tank 20 is comprised by the bottomed cylindrical container which is opened one step
  • a plurality of dripping holes 21 penetrating in and out are formed over the entire circumference.
  • the pulsator 40 is arrange
  • the pulsator 40 consists of a disk-shaped member which has a some wing-shaped protrusion arrange
  • the laundry C is put into this rotating tank 20, and each process, such as washing and dehydration, is performed in the state which accommodated the laundry C in this rotating tank 20. As shown to FIG.
  • the rotating tank 20 is rotatably supported by the water tank 10, and is driven to rotate around the vertical axis J by the drive motor 30 provided in the back surface side of the bottom face of the water tank 10.
  • the drive motor 30 includes a motor main body 31 and a power transmission device 32.
  • the power transmission device 32 has a 1st rotating shaft 32a and a 2nd rotating shaft 32b which each center coincides with the vertical axis
  • the first rotating shaft 32a penetrates the bottom wall of the water tank 10 and is attached to the bottom wall portion of the rotating tank 20.
  • the second rotary shaft 32b penetrates the bottom wall of the water tank 10 and the bottom wall of the rotary tank 20 to protrude into the rotary tank 20, and its protruding end is attached to the center of the pulsator 40. have.
  • the power transmission device 32 switches the rotation direction of each of the 1st rotation shaft 32a and the 2nd rotation shaft 32b according to each process.
  • the 1st rotation shaft 32a and the 2nd rotation shaft 32b are independent, or integral with each other, and can perform forward rotation, reverse rotation, and reverse rotation.
  • the second rotating shaft 32b is driven, and the rotating tank 20 does not rotate, but the pulsator 40 rotates while being inverted at regular intervals.
  • the first rotary shaft 32a and the second rotary shaft 32b are integrally driven, and the rotary tub 20 and the pulsator 40 are integrally rotated at a high speed in a constant direction.
  • the balancer 50 is a member of a round ring shape, and is provided in the upper end of the circumferential wall part 20a of the rotating tank 20. Inside the balancer 50, a high specific gravity liquid such as brine, a plurality of balls, and the like are movably enclosed. By the balancer 50, the unbalance which arises by the bias of the distribution of the laundry C at the time of high speed rotation of the rotating tank 20 cancels out, and the vibration at the time of dehydration process can be suppressed.
  • the drain hose 12 and the drain pump 13 are provided in the case 1 below the water tank 10.
  • One end of the drain hose 12 is connected to the bottom wall of the water tank 10, and the other end of the drain hose 12 is connected to the suction port of the drain pump 13.
  • An external hose 14 extending to the outside of the case 1 is connected to the discharge port of the drain pump 13.
  • the water supply apparatus 70 which supplies water to the water tank 10 is installed in the upper side inside the case 1 before washing or a rinsing process.
  • the water supply device 70 is configured to flow a predetermined amount of water into the inside of the water tank 10 through the opening of the rotary tank 20 at a constant flow rate.
  • a small box-shaped airtight chamber 15 is integrally provided below the outer surface of the circumferential wall of the water tank 10.
  • the airtight chamber 15 communicates with the inside of the water tank 10 through the communication hole 16 opened in the lower corner part of the water tank 10.
  • the upper end of the airtight chamber 15 is connected with the lower end of the sub hose 17 extended along the circumferential wall of the water tank 10 in the up-down direction.
  • the water level sensor 18 is connected to the upper end of the sub hose 17.
  • the water level sensor 18 and the airtight chamber 15 communicate in an airtight state through the sub hose 17.
  • the water level sensor 18 outputs the oscillation frequency according to the change of the air pressure to the processor 60, and the processor 60 detects the water level of the water tank 10 from the oscillation frequency.
  • the vibration sensor 19 is attached to the rear surface of the bottom wall of the water tank 10.
  • the vibration sensor 19 is a sensor that detects acceleration in a plurality of directions of the water tank 10. In this washing machine, a vibration sensor 19 is attached so that acceleration in two horizontal directions and three vertical directions can be detected.
  • the opening / closing sensor 8 is attached to the periphery of the inlet 1a in the case 1.
  • the open / close sensor 8 detects the open / close state of the lid 1b, and is composed of a proximity sensor and a magnetic sensor.
  • a permanent magnet (not shown) may be provided in the back surface side of the lid 1b, and it may be arrange
  • the processor 60 is installed inside the case 1.
  • the processor 60 is provided with hardware, such as a CPU and a memory, and software, such as a control program, and has the function to comprehensively control the operation of a washing machine. That is, the processor 60 controls the switching of the rotational speed of the drive motor 30 and the rotational direction of the power transmission device 32 in accordance with the control program, and processes each of water, washing, intermediate dewatering, rinsing, draining, and dewatering. Run
  • the processor 60 is configured such that an external terminal device 80 such as a smartphone or a tablet can be connected as an input / output device.
  • the notification buzzer 6, the drive motor 30, the drain pump 13, and the water supply device 70 are connected to the processor 60.
  • the processor 60 includes a rotation control unit 61, a water supply and drainage control unit 62, a communication unit 63, a first waterproof garment determining unit 64, a pre-waterproof garment determining unit 65, a sign detecting unit 66, and the like. It is installed.
  • the rotation control unit 61 controls the driving of the drive motor 30 to control the rotation of the rotating tank 20 or the pulsator 40, and the water supply / discharge control unit 62 is a drain pump 13 and a water supply device 70. ) To control drainage or water supply.
  • the communication unit 63 enables wireless communication between the processor 60 and the terminal device 80, and the processor 60 transmits notification information such as an error message to the terminal device 80 through the communication unit 63. can do.
  • the 1st waterproof clothing determination part 64, the pre-waterproof clothing determination part 65, and the sign detection part 66 comprise the abnormal vibration prevention mechanism which prevents abnormal vibration at the time of dehydration, and these details are mentioned later.
  • a user selects a predetermined operation mode by operating the operation switch 3, whereby a series of processes such as washing, rinsing, and dehydration are started.
  • the drain pump 13 is operated and water is drained from the water tank 10.
  • the rotation control part 61 the rotating tank 20 is controlled so that it may become integral with the pulsator 40 and rotate in a fixed direction.
  • the rotation of the rotating tub 20 rises until it reaches the high speed top speed (dehydration speed) exceeding 1000 rpm, and it rotates by dehydration speed for a fixed time.
  • the water contained in the laundry C is discharged from the rotary tub 20 through the dripping hole 21 by the action of centrifugal force.
  • the water discharged from the rotating tub 20 is drained out of the air through the drain hose 12 and the air hose 14.
  • dehydration treatment is performed at the end of a series of treatments, depending on the operation mode, washing or rinsing treatment may be repeated in the middle of a series of treatments. In that case, intermediate dehydration treatment is performed between each rinsing treatment and washing treatment. May be performed (in this case, intermediate dehydration treatment and dehydration treatment are collectively referred to as dehydration treatment).
  • the rotating tub 20 may be disposed through the general clothes Cn and the water draining hole 21.
  • the collected water can be spilled to the outside without any problem. Therefore, in the dehydration process, since the rotating tub 20 is dewatered and becomes lightweight, even if the laundry C is greatly biased, the balancer 50 can follow the unbalance change, so that abnormal vibration does not occur.
  • laundry that is hardly watery or even slightly watery such as raincoats or nylon bed covers, etc.
  • waterproofing or water repellent processing for example, raincoats or nylon bed covers, etc.
  • the abnormal vibration prevention mechanism is multiply organized. Specifically, first and second judging mechanisms for determining the presence or absence of waterproof clothing Cwp based on different mechanisms, and foresight mechanisms for detecting signs of abnormal vibration are provided.
  • the state (water catching state) in which water was wrapped in waterproof garment Cwp may arise before dewatering process.
  • the catcher state is not limited to a state in which water is completely wrapped, and includes a state in which water cannot escape with centrifugal force acting in the dehydration process.
  • a catcher condition occurs whether large or small. It is not a problem if the residual water is small, but it is a problem when the residual water is large.
  • FIG. 4A such a catcher state is illustrated.
  • a catching state Waterproof clothing (Cwp) or general clothing (Cn) can be concentrated in the peripheral wall portion 20a of the rotating tub 20 by centrifugal force.
  • the general garment Cn is dehydrated so that the weight gradually decreases and clings to the circumferential wall portion 20a without moving.
  • the waterproof clothing Cwp has almost no change in weight, and due to the increase in the number of revolutions, the water inside moves to the upper side due to the action of the centrifugal force and adheres to the circumferential wall portion 20a.
  • the unbalanced position of the waterproof garment Cwp and the unbalanced position of the general garment Cn are opposed to each other in the inside of the rotating tub 20, and the water inside the waterproof garment Cwp moves up and down to rotate.
  • the jaw 20 and the like are shaken greatly in three dimensions, and abnormal vibrations occur.
  • vibration types such as the rotating tank 20 in such a dehydration process
  • an unbalanced position means that the weight generated from the water tank 10 at the time of actual dehydration in the state where the clothes are put in is reproduced by attaching a solid weight (unbalanced) to the rotating tank 20.
  • position to attach to (20) That is, the clothes and their biases contained in the rotating tub 20 are replaced by the size of the weight and the attachment position (the centrifugal force acts, and thus becomes the sidewall surface of the rotating tub 20).
  • an unbalanced position means that a weight having the same weight as that of the total amount of the laundry C, which is distributed in a biased manner in the inside of the rotating tub 20, is disposed at that position, thereby generating a similar vibration state without the laundry C. This is where you can.
  • the weight of the weight corresponds to the unbalance amount.
  • the unbalanced position is generally used in a vibration test. .
  • FIG. 5A is a pattern in which the laundry C is distributed in a biased manner on the upper side of the rotating tub 20.
  • the unbalanced position is located away from the upper side of the center, while the rotary tub 20 and the like move largely up and down, compared with the lower portion, the upper portion is largely shaken in the radial direction.
  • FIG. 5B is a pattern in which the laundry C is distributed in a biased manner in the lower side of the rotating tub 20.
  • the unbalanced position is located at the lower side of the center, and the rotary tub 20 and the like move largely up and down, and the lower portion is largely shaken in the radial direction compared to the upper portion.
  • FIG. 5C is a pattern in which the laundry C is distributed in the middle of the rotating tub 20 in a biased manner.
  • the unbalanced position is located at substantially the same height as the center, and the rotating tub 20 and the like move small in the vertical direction, and the lower part and the upper part are substantially synchronously shaken in the radial direction.
  • 5D is a pattern in the case where the laundry C is distributed in the rotating tub 20 in a good balance. Since the rotating tank 20 etc. have a good balance, it shakes, moving small up and down.
  • FIG. 5E is visible even in general clothes Cn, especially when waterproof clothes Cwp are mixed in the laundry C, a catcher state is generated.
  • the unbalanced position of the general garment Cn and the unbalanced position of the waterproof garment Cwp are located up and down, and the rotating tub 20 and the like move largely up and down, and the lower and upper portions largely shake in the radial direction.
  • the weight changes because the weight decreases, but the unbalanced position is almost unchanged since the water is drained approximately evenly.
  • the first waterproof garment which determines the presence or absence of the waterproof garment Cwp in the laundry C on the processor 60 based on the detection value of the vibration sensor 19 so that such a change can be detected with high precision.
  • the determination unit 64 is provided.
  • the dewatering rotation speed is set based on the determination result.
  • the rotation controller 61 controls two acceleration processes for accelerating the rotation of the rotating tub 20 in the low rotation region. Specifically, as shown in FIG. 7, the rotation control unit 61 is abnormal before the rotation control (main spin) of the rotating tub 20 in the normal dehydration process that starts up to the dehydration rotation speed at the start of the dehydration process.
  • the rotation control pre-spin which accelerates and decelerates to a predetermined low rotation speed before vibration is generated is performed.
  • step S10 In each of the acceleration processes of the main spin and the free spin, detection values (horizontal and vertical) detected by the vibration sensor 19 in the same rotation speed band (parts indicated by dashed lines or broken lines in FIG. 7) with the same acceleration state.
  • the detected value in two directions) is acquired by the first waterproof garment determining unit 64 (step S10).
  • FIG. 8A and 8B show examples of horizontal and vertical detection values (output signal of acceleration indicating vibration magnitude) of the vibration sensor 19 in the main spin and the free spin, respectively.
  • FIG. 8A illustrates only general clothes Cn
  • FIG. 8B illustrates a case where waterproof clothing Cwp is mixed.
  • the horizontal axis represents time and the vertical axis represents detected values.
  • the part shown by a dashed-dotted line or a broken line has shown the rotation speed band from which the detection value used for a comparison operation is sampled.
  • the weight decreases in the second acceleration process as compared with the first acceleration process, and the unbalance amount is somewhat changed, but the unbalance position is hardly changed. Therefore, when the detection values of the vibration sensors 19 of the main spin and the free spin are compared, the absolute value (amplitude) does not show a large change in the free spin and the main spin (because the unbalance amount is hardly changed). . The relative change in the difference between the horizontal and vertical detection values in the main and free spins respectively becomes " small " (because the unbalanced position hardly changes).
  • the waterproof clothing Cwp is in a similar state to the free spin, but the general clothes Cn are free-spin to reduce the unbalance amount by reducing the weight. Move to the nearest location.
  • the unbalanced position above the center and the unbalanced position below the center are aligned to the waterproof clothing Cwp side, and the unbalanced position where these compounds are synthesized is approximately the same as the center, or located at the height of the periphery of the pattern (c). It is in a state.
  • the absolute value (amplitude) of the detection value becomes larger in the horizontal direction than in the vertical direction, and the relative change in the difference between the horizontal and vertical detection values in each of the main spin and the free spin becomes "large”.
  • the vibration type in each of the main and free spins is different. Is produced, the presence or absence of the waterproof garment (Cwp) can be determined by comparing the difference.
  • the use of the plurality of direction detection values is intended to make it easier to detect the unbalanced position and the amount of change, and by doing so, the improvement of the detection accuracy can be realized.
  • the first waterproof clothing determining unit 64 acquires the detection values in the horizontal and vertical two directions in each acceleration process, as shown in FIG. 10, the absolute value smoothing and the smoothing process are performed for the acquired detection values. Then, the detected value (output signal) is converted into a comparable value. That is, since the output signal has a periodic negative and positive value, it is absolute valued and smoothed by obtaining the moving average of each signal (step S11).
  • the amount of change ⁇ S of one magnitude relation value is calculated by subtracting ( ⁇ Am- ⁇ Ap) the two magnitude relation values ⁇ Ap and ⁇ Am thus obtained (step S13).
  • a reference value that enables the determination of the presence or absence of the waterproof clothing Cwp is set in advance by comparison with the change amount ⁇ S of the magnitude relationship value. This reference value is obtained by experiment or the like, and is appropriately changed according to the model, size, operation mode, and the like.
  • the first waterproof clothing determining unit 64 calculates the change amount ⁇ S of the magnitude relationship value, it checks whether the change amount ⁇ S is larger than this reference value (step S14). If the determination result is "NO", it is determined that there is no waterproof clothing Cwp (step S15), and the setting of the dewatering rotation speed of the rotating tub 20 in the main spin is set to a normal rotation speed (for example, 1000 rpm) (step S16).
  • step S17 it is determined that there is waterproof clothing Cwp (step S17), and the setting of the dewatering rotation speed of the rotating tub 20 in the main spin is set at a predetermined low speed (for example, 300 rpm) to change the speed of rotation (step S18).
  • a predetermined low speed for example, 300 rpm
  • an alarm is issued by the notification buzzer 6, or an error message is displayed on the display panel of the operation unit 2 or the terminal device 80, and the user is notified. It is safe to call attention.
  • the operation may be stopped at this stage, and the user may be urged to confirm and perform again.
  • the inside of the rotating tub 20 is partitioned with the waterproof clothing Cwp spreading in a bag shape, and the lower portion of the rotating tub 20 A state where a certain space is occupied by the waterproof clothing Cwp may occur.
  • the processor 60 is provided with a pre-waterproof clothing determining unit 65 that determines the presence or absence of the waterproof clothing Cwp on the basis of the rate of change of the water level at the time of water supply in each process of washing or rinsing.
  • the water tank 10 by the volume occupied by the water resistant clothing Cwp. Since the volume of) decreases, the water level detected by the water level sensor 18 rises rapidly. That is, when the waterproof clothing Cwp is mixed in the laundry C, there is an inflection point at which the level change rate (the rate at which the water level changes per unit time) increases rapidly (the water level at this time is also called the inflection point level). .
  • the inflection point level is located at a height near the upper surface of the lower wall portion of the rotating tub 20.
  • the ratio ( ⁇ 2 / ⁇ 1) of the second water level change rate ⁇ 2 to the first water level change rate ⁇ 1 is, for example, about 10, and is equal to a predetermined threshold (eg, 3 to 6). By comparison, it can be determined that there is a waterproof garment (Cwp).
  • the processor 60 rotates the rotating tub 20 at a lower rotation speed than normal in the dehydration process. 30) to control the rotation.
  • the rotating tub 20 is maintained at a dehydration speed exceeding 1000 rpm for a predetermined time, but when it is determined that the waterproof clothing Cwp is present, the rotation speed is changed to, for example, about 300 rpm. .
  • step S101 When the water supply from the water supply device 70 is started at the start of each process of washing or hemging (step S101), the elapsed time t from the water supply start and the water level S in the water tank 10 at the elapsed time t It acquires (step S102). On the other hand, the elapsed time t and the water level S are acquired in sequence during the time from the start of water supply until the set water level is reached.
  • the first water level change rate ⁇ 1 is calculated based on the time t1 from the start of the water supply to the predetermined water level S1 before the inflection point level and the time t2 until the water level S2 is reached (step S103). Subsequently, based on the time t3 until reaching the water level S3 after the inflection point level higher than the water level S2 and the time t4 until the water level S4 is reached, the second water level change rate ⁇ 2 is calculated (step S104). ).
  • step S105 it is determined whether or not the ratio ⁇ 2 / ⁇ 1 of the second water level change rate ⁇ 2 to the first water level change rate ⁇ 1 is larger than the predetermined threshold value (step S105). If the determination result is "YES”, it is determined that there is waterproof clothing Cwp (step S109), and the setting of the dewatering rotation speed of the rotating tub 20 in the dewatering process is set to a predetermined low speed (for example, 300 rpm). It changes so that it may rotate to (step S110).
  • a predetermined low speed for example, 300 rpm
  • step S105 determines whether the water level of the water tank 10 reached the setting water level (step S106), and the water level of the water tank 10 did not reach the setting water level. In the case, the flow returns to step S104 and the second water level change rate ⁇ 2 is calculated again. On the other hand, during this recalculation, the water levels S3 and S4 are updated to a level higher than the previous time, and the second water level change rate ⁇ 2 is calculated.
  • step S107 When the water level of the water tank 10 has reached the set water level, since ⁇ 2 / ⁇ 1 did not become larger than the predetermined threshold value from the start of water supply to the set water level, the waterproof clothing Cwp is It is determined that there is no (step S107), and the setting of the dehydration rotation speed of the rotating tank 20 in the dehydration process is maintained at a normal rotation speed (for example, 1000 rpm) (step S108).
  • a normal rotation speed for example, 1000 rpm
  • the rotation speed of the pulsator 40 may be set to be higher than or equal to the set normal rotation speed in the washing or rinsing processing performed after the water supply. Do. By doing so, the waterproof garment Cwp is further loosened, so that formation of a catcher state can be suppressed, and abnormal vibration in dewatering treatment can be made less likely to occur.
  • the washing machine is further provided with a sign detecting unit 66 capable of detecting a sign of the abnormal vibration and stopping the rotation of the rotating tub 20 in an emergency manner.
  • the sign detection unit 66 is also composed of two detection units based on different mechanisms (the movement detection unit 66a and the change rate detection unit 66b).
  • the motion detection unit 66a finds that the inventors of the present invention show specific behavior in the rhythm component of a period longer than the rotation period of the rotating tank 20 extracted from the signal of the vibration sensor 19 output before the abnormal vibration occurs.
  • the change rate detection part 66b is based on what the present inventors discovered that the vibration amplitude of the rotating tank 20 changes suddenly before abnormal vibration generate
  • Fig. 15 is a flowchart of detection of a sign of abnormal vibration based on a rhythm component
  • Fig. 16 is a flowchart of detection of a sign of abnormal vibration based on a vibration amplitude.
  • the sign detection of abnormal vibration based on a rhythm component is performed by the rhythm detection part 66a, and the signal output from the vibration sensor 19 during the dehydration process is continuous in the rhythm detection part 66a.
  • the swing detection part 66a performs predetermined signal processing on the acquired output signal, and extracts the swinging component of the period longer than the rotation period of the rotating tank 20 (step S202).
  • the swinging component it is preferable to change the swinging component to extract according to the rotation speed of the rotating tank 20. That is, as a result of a simulation experiment in which abnormal vibration is generated in a state where the plastic bag is placed inside the rotating tub 20 in an unbalanced state, among the rhythm components detected before the occurrence of abnormal vibration, the frequency (peak frequency) having the greatest intensity is The rotation speed of the rotating tub 20 tended to be larger. That is, since the primary correlation is shown between the rotational speed of the rotating tub 20 and the peak frequency of the moving component detected immediately before the occurrence of abnormal vibration, the moving component to be extracted is changed based on the correlation. By this, the detection accuracy can be improved.
  • the swing detection unit 66a decomposes the extracted swing component, for example, the vibration component acquired by the vibration sensor 19 by FFT or the like, calculates the strength of the vibration component at a predetermined frequency, and the like.
  • the predetermined parameter R is calculated (step S203).
  • the swing detection part 66a checks whether this parameter R value is larger than the 1st threshold value Th1 preset (step S204). As a result, when it is "NO”, it determines with no sign of abnormal vibration, and returns a process to step S201. As a result, in the case of "YES”, it is determined that there is a sign of abnormal vibration, and the rotation of the rotating tub 20 is urgently stopped (step S205).
  • the change rate detection part 66b performs the detection of the sign of abnormal vibration to the change rate of vibration amplitude, and the signal output from the vibration sensor 19 during the dehydration process is continuously performed by the change rate detection part 66b. It acquires (step S301).
  • the change rate detection unit 66b performs predetermined signal processing on the acquired output signal, calculates the change rate RV of the vibration amplitude of the water tank 10 (step S302), and sets the change rate RV of the vibration amplitude in advance. It is checked whether it is larger than 2 threshold Th2 (step S303).
  • step S304 it is determined that there is no sign of abnormal vibration, and the process returns to step S301.
  • step S304 it is determined that there is a sign of abnormal vibration, and the rotation of the rotating tub 20 is urgently stopped (step S304).
  • the opening / closing of the lid 1b at that time is detected by the opening / closing sensor 8. In this way, the user can restart from the dehydration process by operating the resume switch 7.
  • the rotation control section 61 at the time of emergency stop after the user opens and closes the lid 1b, and operates the resume switch 7, so that the rotating tub 20 rotates at the normal dehydration rotation speed, Returns the setting to the initial state (reset).
  • the drive motor 300 includes an outer rotor 301 (second rotor), an inner rotor 302 (first rotor), an inner shaft 303 (first rotation shaft), and an outer shaft 304 (second rotation shaft). And an annular stator 305 or the like. That is, this drive motor 300 is what is called a dual rotor motor provided with the outer rotor 301 and the inner rotor 302 in the radial direction outer side and inner side of one stator 305. As shown in FIG.
  • the outer rotor 301 and the inner rotor 302 are connected to the pulsator 40 or the rotating tub 20 without the use of a clutch or a decelerator, and are configured to drive these directly.
  • the outer rotor 301 and the inner rotor 302 share a coil of the stator 305, and by supplying current to the coil, the drive motor 300 connects the outer rotor 301 and the inner rotor 302, respectively. It is possible to drive rotation independently.
  • the stator 305 is attached to the bearing bracket 306 provided on the bottom surface of the water tank 10.
  • the outer rotor 301 is a cylindrical member having a flat bottom, a bottom wall portion 301a having a central portion opened, a rotor yoke 30lb installed around the bottom wall portion 301a, and an arc-shaped permanent magnet. It has a some outer magnet 301c which consists of.
  • the inner rotor 302 is a cylindrical member with a flat bottom having a smaller outer diameter than the outer rotor 301, and has an inner circumference set up around the inner bottom wall portion 302a and the inner bottom wall portion 302a with a central portion opened. It has the wall part 302b and the some inner magnet 302c which consists of a rectangular plate-shaped permanent magnet.
  • the inner shaft 303 is a cylindrical shaft member and is rotatably supported inside the outer shaft 304 via the upper and lower inner bearings 307 and 307.
  • the lower end of the inner shaft 303 is connected to the outer rotor 301.
  • the upper end of the inner shaft 303 is connected to the pulsator 40.
  • the outer shaft 304 is a cylindrical shaft member that is shorter than the inner shaft 303 and has an inner diameter larger than the outer diameter of the inner shaft 303, and is freely rotatable to the bearing bracket 306 through upper and lower ball bearings 308 and 308. Supported.
  • the lower end of the outer shaft 304 is connected to the inner rotor 302.
  • the upper end of the outer shaft 304 is connected to the rotating tub 20.
  • the stator 305 is formed of a round annular member having an outer diameter smaller than the inner diameter of the outer rotor 301 and larger than the outer diameter of the inner rotor 302.
  • the stator 305 is provided with a plurality of teeth, coils, and the like embedded in a resin.
  • the rotary tub 20 and the pulsator 40 can be independently driven to rotate. Therefore, when it is determined that there is a waterproof garment Cwp, the water collected by the waterproof garment Cwp can be removed.
  • each of the pulsator 40 and the rotating tub 20 may have a predetermined independent rotation (for example, different directions or speeds) in a drainable state.
  • the drive motor 300 is controlled by the rotation controller. Accordingly, the force can be applied to the waterproof clothing Cwp from various directions, and water collected in the waterproof clothing Cwp can be removed from the waterproof clothing Cwp.
  • the washing machine of 1st Embodiment is not limited to embodiment mentioned above, It also includes various structures other than that.
  • the direction for detecting the acceleration of the vibration sensor 19 is preferably two directions, horizontal and vertical, but is not limited thereto.
  • the vibration state in the acceleration process was compared, you may compare the vibration state in a deceleration process.
  • the rate of change of the water level during the wastewater treatment may be used instead of the rate of change of the water level during the water supply treatment.
  • the basic configuration of the washing machine in the present embodiment is similar to that of the washing machine in the first embodiment. Therefore, the same code
  • the software mounted in the processor differs from the washing machine of 1st Embodiment. That is, this washing machine is provided with a mechanism (third determination mechanism) for preventing abnormal vibration during dehydration, which is different from the washing machine of the first embodiment.
  • FIG. 18 shows the relationship between the main configuration of the processor 60A and the main device of the washing machine. That is, only the unique structure which concerns on this embodiment is shown in simplified form, and FIG. 18 does not exclude each structure of the processor 60 of 1st Embodiment shown in FIG.
  • the vibration sensor 19 and the voltage sensor 30a are connected to the processor 60A as an input device, and the notification buzzer 6 and the drive motor 30 are connected as the output device.
  • the voltage sensor 30a is attached to the drive motor 30 and inputs a control voltage value for controlling the drive motor 30 to the processor 60A every 10 ms, for example.
  • the processor 60A is provided with a rotation control unit 61, a second waterproof garment determining unit 201, a first false detection avoiding unit 202, a second false detection avoiding unit 203, and the like.
  • the rotation controller 61 controls the driving of the drive motor 30 to control the rotation of the rotating tub 20 or the pulsator 40.
  • the second waterproof clothing determining unit 201 constitutes a third determination mechanism for determining the presence or absence of the waterproof clothing Cwp based on the amount of rotation shake of the rotating tub 20, and the first false detection avoiding unit 202. ),
  • the second false detection avoiding unit 203 avoids false detection in the determination, and improves the determination accuracy of the second waterproof garment determining unit 201.
  • the waterproof clothing Cwp when the waterproof clothing Cwp is mixed in the laundry C, the waterproof clothing Cwp is widened in the shape of a pouch, and the state (sticking state) of sticking to the inside of the rotating tub 20 It may generate
  • produce and water may collect in the inside of the rotating tank 20, and it may become difficult to drain.
  • This third judging mechanism is particularly suitable for the determination of the presence or absence of waterproof clothing Cwp in such a stuck state.
  • the second waterproof clothing plate which determines the presence or absence of the waterproof clothing Cwp in the laundry C on the processor 60A based on the rotation speed of the rotating tub 20.
  • the government 201 is provided. Based on the determination result, the dehydration rotation speed is set, the notification and the like are performed.
  • the rotation control unit 61 controls so that two acceleration processes for accelerating the rotation of the rotating tub 20 in the low rotation region are performed. Specifically, as shown in FIG. 20, the rotation control unit 61 performs free spin and main spin at the start of the dehydration process.
  • the rotation control part 61 accelerates rotation of the rotating tank 20 to predetermined rotation speed (holding rotation speed, r1 shown in FIG. 20), for example, the holding rotation speed for several tens of seconds.
  • predetermined rotation speed holding rotation speed, r1 shown in FIG. 20
  • a process of controlling the drive motor 30 is performed (rotation maintenance process, indicated by arrow X in FIG. 20).
  • the general clothing Cn is slightly biased to the lower part of the rotating tub 20 while decreasing the weight, and thus varies with the circumferential wall portion 20a as the rotation speed of the rotating tub 20 increases. (The unbalanced position gets closer to the center position). Therefore, since the "inertia" of the rotating tub 20, which is only general clothing Cn, is small, the amount of rotational shake that occurs when the rotating tub 20 reaches the holding rotation speed and is supported by the holding rotation speed, that is, over The chute amount and the undershoot amount are relatively small.
  • the second waterproof garment determining unit 201 determines the presence or absence of the waterproof garment Cwp based on the amount of rotation shake generated when the rotating tub 20 reaches the holding rotation speed r1.
  • the second waterproof garment determining unit 201 detects the amount of rotation shake from the amount of change in the control voltage of the drive motor 30.
  • the rotation shake amount may be detected by a displacement sensor, a rotation sensor, or the like.
  • the control voltage value of the drive motor 30 is input to the processor 60A from the voltage sensor 30a. High correlation with the actual rotation speed (actual rotation speed) of () is shown, and it fluctuates in conjunction with the change of the actual rotation speed.
  • the second waterproof garment determining unit 201 converts the actual rotation speed of the rotating tub 20 based on the control voltage value and detects the amount of rotation shake in order to suppress the complexity of the structure and the increase of the member cost. Consists of.
  • the rotation control part 61 accelerates to the maintenance rotation speed r1, and when it reaches the maintenance rotation speed r1, it controls the drive motor 30 so that it may be maintained at that rotation.
  • the drive motor 30 cannot follow the control due to the inertia effect of the rotating tub 20, and it does too much (overshoot) or returns too much to the target holding rotation speed r1. Or undershoot (here, these overshoot amounts and undershoot amounts are referred to as rotation shake amounts).
  • the rotation control part 61 controls to rotate for a fixed time, for example, several tens of seconds, and the maintenance rotation speed r1 (rotation maintenance process).
  • the predetermined period of time (18 seconds in this embodiment) after reaching the holding rotation speed r1 is subdivided into fixed periods of time (every 0.5 seconds in this embodiment).
  • Comparison points (36 in this embodiment) are set.
  • control voltage values are returned to the processor 60A. Is entered.
  • the second waterproof garment determining unit 201 calculates the actual rotation speed RPM (i) based on each of the input control voltage values.
  • the absolute value CALC_RPM (i) of the difference between the actual rotational speed RPM (i) and the holding rotational speed r1 is calculated (see Equation 1 shown below).
  • the second waterproof clothing determining unit 201 After reaching the holding rotation speed r1, the second waterproof clothing determining unit 201 sequentially accumulates the absolute value CALC_RPM (i) for 36 comparison points (see Equation 2 shown below). ). The second waterproof garment determining unit 201 treats the accumulated value as a comparison value of the amount of rotation shake.
  • a reference value based on the amount of rotation shake in the case of only the general garment Cn is set for each comparison point by experiment or the like in advance.
  • the second waterproof clothing determining unit 201 compares the reference value set at the comparison point with the comparison value of the amount of rotation shake corresponding to the reference value. And when the comparison value of the rotation shake amount by the comparison in any one comparison point exceeds the reference value, the 2nd waterproof clothing determination part 201 determines that there is waterproof clothing Cwp.
  • the determination accuracy can be increased.
  • the frequency distribution of the rotation shake amount in the eleventh comparison point is illustrated.
  • the vertical axis represents the frequency
  • the horizontal axis represents the comparison value (integrated value at the eleventh comparison point) of the rotation shake amount.
  • the solid line shows the case where only general clothes Cn, and the broken line shows the case where there exists waterproof clothing Cwp.
  • Ls is an example of a reference value.
  • the presence or absence of the waterproof garment Cwp can be determined by setting the reference value Ls at the boundary portion of these frequency distributions and comparing the reference value Ls with a comparison value of the amount of rotational shake.
  • the second waterproof clothing determining unit 201 determines that the waterproof clothing Cwp is Is determined.
  • the position of the reference value Ls can be arbitrarily set and can be adjusted according to the situation.
  • the comparative value of rotation shake amount may become abnormally large, and although the frequency is low, the reference value Ls is exceptionally low. It may be exceeded.
  • the general clothing (Cn) is extremely distributed in the inside of the rotating tub 20 to increase the vibration, or the general clothing (Cn) is well distributed in the interior of the rotating tub 20, but the weight In this extremely large case, the comparison value of the rotation shake amount is ideally large.
  • the second waterproof clothing determining unit 201 determines that there is the waterproof clothing Cwp, even if it is only the general clothing Cn, and detects it incorrectly. If the frequency of false detections increases, reliability is impaired.
  • the 1st false detection avoiding part 202 and the 2nd false detection avoiding part 203 are provided.
  • the first false detection avoidance unit 202 determines that there is no waterproof garment Cwp by using a difference in load variation depending on the presence or absence of the waterproof garment Cwp (load variation detection).
  • the rotation control unit 61 accelerates and maintains the second rotation holding process to accelerate to the second holding rotation speed r2 lower than the holding rotation speed r1 at the start of the dehydration process. Do it.
  • the rotation speed change of free spin is shown in FIG.
  • the free spin prior to the rotation holding process of accelerating and holding at the above-mentioned holding rotation speed r1, the second rotation holding process of accelerating and holding up to a second holding rotation speed r2 lower than the holding rotation speed r1 This is done.
  • the 1st false detection avoidance part 202 calculates the maximum rotation speed r1max, r2max in these overshoots. Then, the increase ratios (A%, B%) for each of the holding rotation speed r1 and the second holding rotation speed r2 are obtained (see Equation 3 below).
  • the first false detection avoidance unit 202 acquires the increase ratio ratio (A% / B%) which is the ratio of these increase ratios, and sets this as the comparison value of the determination.
  • FIG. 24 the increase ratio ratio in the various sample data in the case of only general clothes Cn and including waterproof clothes Cwp is shown. It is sample data when a mark contains waterproof clothing Cwp, and it is sample data when x mark is only general clothes Cn.
  • the weight is significantly reduced in the rotational maintenance process compared to the second rotational maintenance process, so that the increase ratio increases, whereas in the case of the waterproof clothing (Cwp), the weight hardly changes.
  • the ratio ratio becomes small. Therefore, depending on the presence or absence of waterproof clothing Cwp, there is a difference in the increase ratio, and the distribution thereof is also divided. Therefore, it is possible to determine that there is no waterproof garment Cwp by setting the threshold value (first threshold value S1) at the boundary portion of these distributions, and comparing the first threshold value S1 with the increase ratio ratio. .
  • the value of the increase ratio ratio 10% larger than the maximum value of the increase ratio ratio in the case of including the waterproof garment Cwp is set to the first threshold value S1.
  • the first threshold value S1 when the acquired increase ratio ratio exceeds the first threshold value S1, by determining that "there is no waterproof clothing Cwp", the first false detection avoiding unit 202 is " waterproof clothing Cwp. ) Can be detected with high precision.
  • the second false detection avoiding unit 203 Since the second false detection avoiding unit 203 mainly distributes the general clothing Cn in an extremely symmetrical manner in the inside of the rotating tub 20, and the vibration increases, the case where the comparison value of the rotation shake amount is ideally large in advance It is configured to detect. In other words, the second false detection avoiding unit 203 uses the vibration sensor 19 and determines that there is no waterproof clothing Cwp by using a difference in vibration depending on the presence or absence of the waterproof clothing Cwp (vibration). Index).
  • the second false detection avoiding unit 203 is configured to compare the vibration of the plurality of directions at the plurality of rotation speeds in order to increase the detection accuracy.
  • the second false detection avoiding unit 203 uses the acceleration in the horizontal direction and the acceleration in the vertical direction of the vibration sensor 19. And the comparison is made of the rotation maintenance process Z which rotates by the rotation area Z (the area which secondary resonance becomes large, the 1st rotation area
  • the second false detection avoiding unit 203 integrates the detected values of the accelerations in the horizontal direction and the vertical direction acquired from the vibration sensor 19 in these first and second areas by a predetermined amount of time. These integrated values are used as comparison values.
  • 25 shows detection values (accumulated values in the horizontal direction and the vertical direction in each rotation region in various sample data in the case of only general clothing Cn and waterproof clothing Cwp). ). It is sample data when a mark contains waterproof clothing Cwp, and it is sample data when x mark is only general clothes Cn.
  • the waterproof clothing Cwp Since the waterproof clothing Cwp is small in vibration, the waterproof clothing Cwp can be distinguished from the general clothing Cn. Therefore, by setting a threshold value (second threshold value S2) at the boundary portion of these distributions for each comparison point, and comparing the second threshold value S2 with a corresponding comparison value, the waterproofing is performed under four different conditions. It can be determined that there is no clothing Cwp.
  • S2 (4) the “waterproof clothing ( Cwp). " By doing so, the 2nd false detection avoiding part 203 can detect with high precision that "there is no waterproof clothing Cwp.”
  • step S401 the presence or absence of the waterproof garment Cwp is determined by the second false detection avoiding unit 203 (step S401).
  • step S401 the determination by the second waterproof clothing determining unit 201 is not performed (Yes in step S402).
  • step S403 a determination by the first false detection avoiding unit 202 is performed (step S403).
  • step S404 when it is not determined by the first false detection avoiding unit 202 that there is no waterproof clothing Cwp, a determination by the second waterproof clothing determining unit 201 is performed (step S405).
  • the second waterproof clothing determining unit 201 determines whether the waterproof clothing Cwp is present by both the first false detection avoiding unit 202 and the second false detection avoiding unit 203. Since it is limited only when it is not determined that there is no Cwp), false detection can be effectively avoided, and the presence or absence of the waterproof garment Cwp can be determined with high precision.
  • the first waterproof clothing determining unit 64 may be combined with the first waterproof clothing determining unit 64, the pre-waterproof clothing determining unit 65, the sign detecting unit 66, or the like of the first embodiment. By doing so, it becomes possible to further prevent abnormal vibration during dehydration.
  • the basic structure of the washing machine in this embodiment is the same as that of the washing machine of 1st and 2nd embodiment. Therefore, the same code
  • the software mounted in the processor 60B differs from the washing machine of the 1st and 2nd embodiment. That is, this washing machine is provided with a mechanism which prevents abnormal vibration during dehydration, which is different from the washing machines of the first and second embodiments.
  • the drive motor 30 constitutes a "drive part" in the third embodiment.
  • the processor 60B is a controller based on a well-known microcomputer, and includes a central processing unit (CPU) that executes a program, a memory configured by, for example, RAM or ROM, for storing programs and data, and an electrical signal. And an intelligent power module (IPM) configured as a switching device for driving the drive motor 30.
  • CPU central processing unit
  • IPM intelligent power module
  • various sensor detection signals are input to the processor 60B.
  • the various sensors include the following sensors. That is, the above-described water level sensor 18, the Hall IC sensor SW1 for detecting the rotation speed of the drive motor 30, the voltage sensor SW2 for detecting the applied voltage of the drive motor 30, and the drive motor 30. And a current sensor SW3 and a shunt resistor SW4 for detecting the drive current.
  • the processor 60B performs a dehydration process similar to that of the washing machines of the first and second embodiments.
  • the dehydration process includes a preliminary dehydration process (pre-spin) in which the rotation speed of the rotating tub 20 reaches an intermediate rotation region (in this embodiment (around 400 to 500 rpm)) and a high rotation region ( In this embodiment, this spin-drying
  • pre-spin preliminary dehydration process
  • main spin dehydration process
  • the preliminary dehydration process is a process for releasing the bias of the laundry C, and after raising the rotating tank 20 to a predetermined first rotation speed r1 (about 450 rpm in this embodiment), over a predetermined time, It rotates so that the 1st rotation speed r1 may be maintained.
  • This dewatering process is a process for dewatering the laundry C. After raising the rotating tank 20 to a predetermined 2nd rotation speed R2 (about 700 rpm in this embodiment), the 2nd over a predetermined time. It rotates to maintain the rotation speed R2.
  • FIG. 31 shows the enclosing portion A of FIG. 30 in an enlarged manner. As shown in FIG. 31, both the preliminary
  • the processor 60B detects the presence of the waterproof clothing Cwp and prevents abnormal vibrations from occurring.
  • the processor 60B includes a load detector 101 and a load detector 101 for converting and detecting a rotational load of the rotating tub 20 into a rotational coordinate system that rotates in synchronization with motor rotation.
  • the determination part 103 which determines the presence or absence of a sign of abnormal vibration based on a calculation result is provided.
  • the torque voltage Vi is determined based on the detection signal from the voltage sensor SW2.
  • the load detection unit 101 has three predetermined periods T1 to T3 set when the rotating tank 20 is being accelerated in the preliminary dehydration process, and the rotating tank 20 is accelerated in the main dewatering process.
  • the torque voltage Vi is detected in the three predetermined periods T4 to T6 which are set at the same time.
  • the confirmation rotation speed ri is equal to the rotation speed at the time of rotating the rotating tank 20 by a fixed rotation speed (refer FIG. 31).
  • the term "constant speed” here refers to the place where the target value of the speed becomes constant. The actual rotation speed may vibrate around the target value as a result of being affected by overshoot or undershoot, for example.
  • setting of the confirmation rotation speed ri is not limited to what was shown in FIG.
  • the fluctuation amount ⁇ Vi is equivalent to the difference obtained by subtracting the minimum value from the maximum value of the torque voltage Vi. For example, if the torque voltage V1 has been detected 100 times in the predetermined period T1, the calculating unit 102 determines the maximum value and the minimum value among the 100 torque voltages V1 and changes the subtraction result (the variation amount ( It calculates as (DELTA) V1).
  • the calculating part 102 also multiplies each variation amount (DELTA) V1-(DELTA) V6, and outputs to the determination part 103 the determination value Vp which showed the multiplication result. Specifically, the determination value Vp is calculated based on the following equation (4).
  • Vp ⁇ V1 ⁇ ⁇ V2 ⁇ ⁇ V3 ⁇ ⁇ V4 ⁇ ⁇ V5 ⁇ ⁇ V6.
  • the determination value Vp is equal to the sixth power of the geometric mean of the amount of change ⁇ Vi.
  • the determination value Vp is an example of the index showing the average value of the variation amount ⁇ Vi.
  • the determination unit 103 compares the determination value Vp output from the operation unit 102 with a predetermined threshold value Vt. And the determination part 103 determines that there is a sign of abnormal vibration, when the determination value Vp is larger than the threshold value Vt, as shown to following formula (5).
  • the determination unit 103 is equivalent to comparing the geometric mean of the variation amount ⁇ Vi with a predetermined value (specifically, one-sixth of the threshold value Vt).
  • the water contained in the said general garment Cn is discharged and it becomes light.
  • the magnitude of the torque value Vi itself decreases from the preliminary dehydration process to the present dehydration process, and the magnitude of the variation ⁇ Vi is relatively small, so that the magnitude of the determination value Vp is relatively small. Becomes smaller.
  • the fluctuation amount ⁇ Vi of the torque voltage Vi becomes relatively large.
  • the rotation speed is in the low to medium rotation region, even if the dewatering process proceeds, the water blocked in the waterproof clothing Cwp is not discharged. This is not alleviated. For this reason, the torque voltage Vi and its variation ⁇ Vi become relatively large.
  • the processor 60B receives the determination of the determination unit 103 and controls the drive motor 30. Specifically, when it is determined by the determination unit 103 that there is a sign of abnormal vibration, the processor 60B is driven to rotate the rotating tub 20 below a predetermined third rotation speed R3 in the dehydration process. The operation of the motor 30 is controlled.
  • the third rotational speed R3 is set to an intermediate rotational area, and is substantially equal to the first rotational speed r1 set as the highest rotational speed of the preliminary dewatering process in this embodiment.
  • step S1 the processor 60B determines whether or not the dehydration process is started. If this determination is YES, the flow proceeds to step S2, and if NO, the process waits until the dehydration process is started.
  • the processor 60B starts the preliminary dewatering process by driving the drive motor 30 or the like along the dehydration profile shown in FIGS. 30 and 31.
  • the rotation speed of the drive motor 30 rises stepwise toward the first rotation speed r1.
  • the load detector 101 detects the torque voltage Vi when the rotation speed of the drive motor 30 is rising in the preliminary dehydration process.
  • step S3 the load detection part 101 has a torque voltage in predetermined period Ti which is a period from the rotation speed just before reaching confirmation rotation ri to the confirmation rotation ri. (Vi) is detected. In each predetermined period Ti, the torque voltage Vi is detected several times.
  • step S4 the load detection part 101 determines the maximum value Vi (max) and the minimum value Vi (min) of the torque voltage Vi in each predetermined period Ti.
  • step S5 the processor 60B determines whether or not the detection of the torque voltage Vi is completed with respect to the confirmation rotational speed ri stored in the first table (that is, the first three periods). In all, it is determined whether the detection is completed). If this determination is YES, the flow proceeds to step S6, and if NO, the flow returns to step S3.
  • the rotation speed of the driving motor 30 reaches the first rotation speed r1.
  • the processor 60B controls the driving of the drive motor 30 so as to maintain the first rotation speed r1.
  • the processor 60B reduces the rotation speed of the drive motor 30 toward zero.
  • the processor 60B ends the preliminary dehydration process to start the present dewatering process.
  • the rotation speed of the drive motor 30 rises stepwise toward the second rotation speed R2.
  • the load detection unit 101 detects the torque voltage Vi not only during the preliminary dehydration process but also when the rotation speed of the drive motor 30 increases in the present dehydration process.
  • step S7 the load detection part 101 torques in predetermined period Ti which is a period from the rotation speed just before reaching confirmation rotation ri to the confirmation rotation ri.
  • the voltage Vi is detected.
  • the torque voltage Vi is detected several times.
  • step S8 the load detection part 101 determines the maximum value Vi (max) and minimum value Vi (min) of the torque voltage Vi for every predetermined period Ti.
  • step S9 the processor 60B determines whether or not the detection of the torque voltage Vi is completed with respect to the confirmation rotational speed ri stored in the second table (that is, in the latter three periods). In all, it is determined whether the detection is completed). If this determination is YES, the flow proceeds to step S10, and if NO, the flow returns to step S7.
  • step S10 the calculating part 102 makes each fluctuation amount (DELTA) Vi based on the maximum value Vi (max) and minimum value Vi (min) of the torque voltage Vi determined with respect to each of predetermined period T1-T6, respectively.
  • step S11 the calculating part 102 calculates the determination value Vp based on Formula (4) mentioned above.
  • step S12 the determination part 103 compares the determination value Vp and the threshold value Vt based on Formula (5) mentioned above.
  • the determination value Vp is equal to or less than the threshold value Vt (step S12: NO)
  • the flow shown in FIG. 34 ends, and the present dehydration process is continued, while the determination value Vp is larger than the threshold value Vt.
  • processor 60B proceeds to step S13 to end the flow by changing the dewatering profile. In the latter case, as shown in FIG. 35, the highest rotation speed in the present dehydration process is changed from the second rotation speed R2 to the third rotation speed R3.
  • step S10 to step S12 the process from step S10 to step S12 is performed before the rotation speed of the drive motor 30 reaches a high rotation area.
  • the detection of the torque voltage Vi (specifically, the processing according to steps S2 to S9) is performed when the rotation speed of the drive motor 30 is in the low to medium rotation region (specifically, about 200 to 500 rpm). It is supposed to be done.
  • the washing machine considers the amount of change ⁇ Vi of the torque voltage Vi in accordance with the flow shown in FIG. 34. Specifically, as shown in FIG. 31, when the geometric mean of the fluctuation amounts ⁇ V1 to ⁇ V6 determined in a total of six periods is larger than a predetermined value, there is a sign of abnormal vibration, that is, water is washed in the laundry C. It is determined that the sealed waterproof clothing Cwp is included.
  • this determination is made to refer only to the detection result in the dehydration process, it can respond to the situation which performs only a dehydration process, for example, without performing a washing process or a rinsing process.
  • Such a situation is particularly effective for waterproof clothing Cwp, and thus is effective in preventing abnormal vibrations caused by waterproof clothing Cwp.
  • the indication can be suitably determined before abnormal vibration generate
  • the variation amount ⁇ Vi itself is not compared with the threshold value Vt, but by comparison based on the geometric mean Vp of the variation amount ⁇ Vi. Therefore, it is advantageous to suppress the influence of the detection error of the torque voltage Vi and the like and further determine the sign appropriately before the abnormal vibration occurs.
  • the processor 60B dehydrates as shown in FIG. 35.
  • the rotating tub 20 is made to rotate below 3rd rotation speed R3.
  • the maximum rotation speed of the rotating tank 20 in a normal dehydration process is set to about 700 rpm
  • the highest rotation of the rotating tank 20 in the dewatering process The number may be set at, for example, about 500 rpm.
  • the dehydration process can be completed without stopping the operation of the washing machine while preventing the occurrence of abnormal vibration caused by the watertight waterproof clothing Cwp.
  • the physical voltage representing the rotational load of the rotating tub 20 is configured to detect the torque voltage Vi of the drive motor 30, but is not limited to this configuration.
  • the torque voltage Vi for example, the torque current of the drive motor 30 may be used.
  • the torque current can be acquired based on the detection result of the current sensor SW3 and / or the shunt resistor SW4.
  • both the torque voltage and the torque current of the drive motor 30 may be detected, and a sign of abnormal vibration may be determined based on the combination thereof.
  • the washing machine was comprised so that the presence or absence of a sign of abnormal vibration may be determined based on the fluctuation amount (DELTA) Vi acquired for every predetermined period Ti, it is not limited to this structure.
  • the washing machine may determine whether there is a sign of abnormal vibration based on the average of the torque voltages Vi in the predetermined period Ti.
  • the calculation unit 102 calculates the average of the rotational load (torque voltage Vi) in each of the predetermined period Ti during the dehydration process, and the determination unit 103 calculates the calculation unit 102. Based on the average of the operations calculated by), the presence or absence of a sign of abnormal vibration is determined. As in the above embodiment, when the torque voltage Vi is configured to be detected in six periods in total, the calculation unit 102 calculates the average of the sums in each of the six periods.
  • the sign can be suitably determined before abnormal vibration generate
  • the washing machine may determine whether the abnormal vibration is a sign based on the maximum value of the torque voltage Vi in the predetermined period Ti.
  • the calculation unit 102 determines the maximum value of the rotation load (torque voltage Vi) in each of the predetermined period Ti during the dehydration process, and the determination unit 103 determines the calculation unit 102. Based on the maximum value determined by), the presence or absence of a sign of abnormal vibration is determined. As in the above embodiment, when the torque voltage Vi is configured to be detected in six periods in total, the calculation unit 102 calculates the maximum value in each of the six periods.
  • the laundry C includes the waterproof garment Cwp sealed off the water
  • torque voltage Vi becomes large largely.
  • torque voltage Vi increases, its maximum value also increases.
  • the sign can be suitably determined before abnormal vibration generate
  • the torque voltage Vi may be performed when the rotation speed of the rotating tub 20 rises, it is not limited to this structure. For example, when the rotation speed of the rotating tub 20 is decreasing, the torque voltage Vi may be detected, or when the angular acceleration of the rotating tub 20 is changing, the torque voltage Vi ) May be detected. In addition, you may detect when the rotation speed of the rotating tank 20 rises in full swing, when the rotation speed decreases in full swing, and when two or more of angular accelerations are changing in full swing.
  • the said structure may be applied to the intermediate dewatering process performed between a washing process and a rinsing process, for example.
  • the presence or absence of a sign of abnormal vibration is determined based on the rotational load detected during the intermediate dehydration process.
  • the dehydration profile a configuration in which a preliminary dehydration process is performed once, and then immediately shifts to the dehydration process is exemplified.
  • the preliminary dehydration process may be performed a plurality of times.
  • the rotational load may be detected in each of the plurality of preliminary dewatering processes.
  • the dehydration process may be started after the rotation speed of the drive motor 30 is decelerated to a predetermined rotation speed (greater than zero rotation speed) in the low rotation region.
  • both the preliminary dehydration process and this dehydration process were comprised so that torque voltage Vi might be detected, it is not limited to this structure. At least one of the preliminary dehydration process and the present dehydration process may detect the torque voltage Vi. In this case, as the period for detecting the torque voltage Vi is increased or decreased, the setting of the threshold value Vt is also changed.
  • washing machine of each of the above-mentioned first to third embodiments is not limited to the above-described embodiment, but also includes various other configurations.
  • the technique disclosed by each embodiment can be combined suitably according to the specification of a washing machine.
  • a washing machine may be constituted by the technique disclosed in the first embodiment and the technique disclosed in the second and third embodiments, and the washing machine is constituted by the technique disclosed in the second embodiment and the technique disclosed in the third embodiment. You can do it.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

La présente invention concerne un lave-linge capable d'empêcher une vibration anormale pendant l'essorage provoqué par un vêtement étanche à l'eau (Cwp) à l'avance. Un lave-linge selon la présente invention comprend : une cuve rotative pour recevoir le linge; un capteur de vibration fixé à une cuve à eau pour supporter la cuve rotative, et capable de détecter une vibration dans une pluralité de directions; et un processeur pour commander la rotation de la cuve rotative et déterminer le type de vibration sur la base de la valeur de détection du capteur de vibration pour déterminer s'il existe ou non un vêtement étanche à l'eau dans le linge.
PCT/KR2018/001313 2017-02-10 2018-01-31 Lave-linge Ceased WO2018147587A1 (fr)

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US16/485,151 US11149372B2 (en) 2017-02-10 2018-01-31 Washing machine
KR1020197013478A KR102492151B1 (ko) 2017-02-10 2018-01-31 세탁기

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JP2017-023132 2017-02-10
JP2017023132 2017-02-10
JP2017-026937 2017-02-16
JP2017026937 2017-02-16
JP2017-086959 2017-04-26
JP2017086959A JP6941967B2 (ja) 2017-02-10 2017-04-26 洗濯機

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Publication number Priority date Publication date Assignee Title
CN112522910A (zh) * 2019-08-30 2021-03-19 青岛海尔洗衣机有限公司 一种洗衣机的异常检测方法
CN113802328A (zh) * 2020-06-12 2021-12-17 青岛海尔洗衣机有限公司 用于洗涤设备的控制方法

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JP2003334398A (ja) * 2003-06-25 2003-11-25 Toshiba Corp 洗濯機
KR100690687B1 (ko) * 2005-08-19 2007-03-09 엘지전자 주식회사 세탁기의 편심 종류 검출 방법
JP2007319184A (ja) * 2006-05-30 2007-12-13 Sharp Corp ドラム式洗濯機
KR20150054128A (ko) * 2013-11-11 2015-05-20 동부대우전자 주식회사 세탁기의 세탁제어 장치 및 방법
KR20160146057A (ko) * 2015-06-11 2016-12-21 삼성전자주식회사 세탁기 및 그 제어방법

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Publication number Priority date Publication date Assignee Title
JP2003334398A (ja) * 2003-06-25 2003-11-25 Toshiba Corp 洗濯機
KR100690687B1 (ko) * 2005-08-19 2007-03-09 엘지전자 주식회사 세탁기의 편심 종류 검출 방법
JP2007319184A (ja) * 2006-05-30 2007-12-13 Sharp Corp ドラム式洗濯機
KR20150054128A (ko) * 2013-11-11 2015-05-20 동부대우전자 주식회사 세탁기의 세탁제어 장치 및 방법
KR20160146057A (ko) * 2015-06-11 2016-12-21 삼성전자주식회사 세탁기 및 그 제어방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112522910A (zh) * 2019-08-30 2021-03-19 青岛海尔洗衣机有限公司 一种洗衣机的异常检测方法
CN112522910B (zh) * 2019-08-30 2024-02-20 重庆海尔滚筒洗衣机有限公司 一种洗衣机的异常检测方法
CN113802328A (zh) * 2020-06-12 2021-12-17 青岛海尔洗衣机有限公司 用于洗涤设备的控制方法
CN113802328B (zh) * 2020-06-12 2023-10-10 天津海尔洗涤电器有限公司 用于洗涤设备的控制方法

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