WO2010023912A1 - 洗濯機 - Google Patents

洗濯機 Download PDF

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Publication number
WO2010023912A1
WO2010023912A1 PCT/JP2009/004153 JP2009004153W WO2010023912A1 WO 2010023912 A1 WO2010023912 A1 WO 2010023912A1 JP 2009004153 W JP2009004153 W JP 2009004153W WO 2010023912 A1 WO2010023912 A1 WO 2010023912A1
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WO
WIPO (PCT)
Prior art keywords
acceleration
drum
vibration
detection range
detection device
Prior art date
Application number
PCT/JP2009/004153
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
尾関祐仁
薮内秀隆
蒲生健
萩原久
Original Assignee
パナソニック株式会社
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
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to KR1020117007517A priority Critical patent/KR101253404B1/ko
Priority to EP09809568.0A priority patent/EP2319971A4/de
Priority to CN200980134168.9A priority patent/CN102137966B/zh
Publication of WO2010023912A1 publication Critical patent/WO2010023912A1/ja

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    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • 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
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/06—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about an inclined axis
    • 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
    • D06F49/00—Domestic spin-dryers or similar spin-dryers not suitable for industrial use
    • D06F49/04—Bowl drive
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • 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

Definitions

  • the present invention relates to a washing machine including a vibration detection device that detects vibration of a water tank.
  • a vibration detector equipped with an acceleration sensor has been devised to improve the accuracy of vibration detection.
  • the amplification factor of the output of the acceleration sensor in response to the vibration in the direction orthogonal to the rotation axis direction of the dewatering tub at a low speed with a dehydration rotation speed equal to or lower than a predetermined value It is intended to effectively detect vibrations in a dehydrating device that has a larger amplification rate than the output in response to vibrations in the direction of the rotation axis of the dewatering tank at high speeds when the dehydration speed is higher than a predetermined value and that shows different vibration modes depending on the rotation speed. It is.
  • a device for amplifying the output of the vibration detection mechanism is separately required for each amplification process, and the vibration detection mechanism becomes complicated. Further, by amplifying the output of the vibration detection mechanism, the noise contained in the output component is amplified, and it becomes necessary to take measures against noise.
  • the present invention solves the conventional problems, and provides an accurate vibration detection device at low cost by appropriately switching between acceleration detection ranges having different sensitivities in accordance with detected acceleration and drum rotation speed.
  • the present invention includes a drum provided with water passage holes on the outer periphery, a water tank containing the drum and storing washing water, a motor for rotating the drum, a housing for storing the water tank,
  • a vibration detection device composed of an acceleration sensor that can detect vibrations in the aquarium and switch between multiple acceleration detection ranges with different minimum acceleration resolutions, and controls the motor and vibration detection device based on the output of the vibration detection device
  • the control unit improves the accuracy of vibration detection by switching the acceleration detection range according to the detected acceleration.
  • the washing machine of the present invention can perform vibration detection in the detection range with the highest sensitivity by switching the acceleration detection range according to the detected acceleration and drum rotation speed.
  • low vibration and low noise operation by improving vibration detection accuracy, and reduction of operation time by efficient operation can be realized, and both improvement of product safety and user convenience can be realized. it can.
  • FIG. 1 is a block diagram of a control device for a washing machine according to Embodiment 1.
  • FIG. FIG. 2A is a configuration diagram illustrating a mounting position of a triaxial acceleration sensor that is the vibration detection device according to the first exemplary embodiment.
  • FIG. 2B is a configuration diagram illustrating a mounting position of a triaxial acceleration sensor that is the vibration detection device according to the first exemplary embodiment.
  • FIG. 3A is a graph showing a change in acceleration in the dehydration process of the drum type washing machine.
  • FIG. 3B is a graph showing a change in acceleration in the dehydration process of the drum type washing machine.
  • FIG. 3C is a graph showing a change in acceleration in the dehydration process of the drum type washing machine.
  • FIG. 4 is a flowchart showing a series of processing for switching the acceleration detection range of the acceleration sensor according to the first embodiment.
  • FIG. 5 is a time chart showing a series of processes for switching the acceleration detection range of the acceleration sensor capable of detecting vibrations in a plurality of directions in the dehydration process.
  • FIG. 6 is a block diagram of the control device for the washing machine in the second embodiment.
  • FIG. 7 is a flowchart showing a series of processes for switching the acceleration detection range of the acceleration sensor according to the second embodiment.
  • FIG. 8A is a time chart showing a series of processes for switching the acceleration detection range of an acceleration sensor capable of detecting vibrations in a plurality of directions in the dehydration process.
  • FIG. 8B is a time chart showing a series of processes for switching the acceleration detection range of the acceleration sensor capable of detecting vibrations in a plurality of directions in the dehydration process.
  • FIG. 8C is a time chart showing a series of processes for switching the acceleration detection range of the acceleration sensor capable of detecting vibrations in a plurality of directions in the dehydration process.
  • FIG. 8D is a time chart showing a series of processes for switching the acceleration detection range of the acceleration sensor capable of detecting vibrations in a plurality of directions in the dehydration process.
  • FIG. 9 is a flowchart showing a series of processes for switching the acceleration detection range of the acceleration sensor and determining whether or not to continue dehydration in the dehydration process.
  • FIG. 10 is a flowchart showing a series of processing for switching the acceleration detection range of the acceleration sensor in the washing process of the drum type washing machine in the third embodiment.
  • FIG. 1 is a block diagram of a control device that detects and suppresses vibration due to unbalance of laundry in the washing machine (drum type) in the first embodiment.
  • the washing machine includes a housing 10, a drum 11 that stores and rotates laundry, and a motor 12 that rotates the drum 11 while controlling the speed. Further, a water tank 13 in which the drum 11 is housed and water enters, a cover 18 having a laundry inlet, a seal packing 14 for connecting the water tank 13 and the cover 18 having the laundry inlet without a gap, and a water tank 13
  • a support spring 15 for maintaining the posture and a vibration isolating damper 16 for reducing vibration generated when the motor rotates to reduce vibration transmission to the housing 10 and the floor are provided.
  • the washing machine according to Embodiment 1 further includes a vibration detection device 17 that detects vibration of the water tank 13.
  • a vibration detection device 17 an acceleration sensor that can digitally output a change in acceleration is used in the first embodiment, but an analog output type acceleration sensor that can output a change in acceleration as a voltage change may be used.
  • the acceleration sensor in the first embodiment uses a capacitance type acceleration sensor that converts a change in capacitance into a voltage.
  • a piezoresistive acceleration sensor or the like can be used.
  • MEMS Micro Electro Mechanical Systems
  • MEMS sensors are minute sensors fabricated using semiconductor integrated circuit fabrication technology, and in recent years, they have come to be mass-produced at low cost. It is used in equipment.
  • the MEMS sensor it can be said that it is suitable as the vibration detection device 17 because it is small and light and has little influence on vibration itself.
  • the acceleration sensor according to the first embodiment employs a single chip capable of detecting three axes and detects vibrations in a plurality of directions. Therefore, it is possible to accurately determine the vibration mode that changes in complex with the increase in the rotational speed during dehydration, and to determine various unbalanced states.
  • the acceleration sensor may be biaxial.
  • the attachment position of the vibration detection device 17 in the first embodiment is the upper front side of the water tank 13. Since the vibration when accelerating to high speed rotation in the state where the unbalance of the laundry in the drum 11 is present at the front part is larger than when the unbalance is present at the rear part, there is a large unbalance in the front part. It is necessary to avoid accelerating to high speed rotation as much as possible. When there is an imbalance in the front part, it is desirable that the vibration detector 17 is attached to the front part because the front side of the water tank 13 tends to appear remarkably.
  • the anti-vibration rubber 19 has the housing 10 on the floor.
  • the support spring 15 and the vibration damping damper 16 constitute a support means. Further, a control unit 20 that controls the rotation of the motor 12 and the vibration detection device 17 is provided.
  • FIGS. 2A and 2B are configuration diagrams showing the attachment position of the triaxial acceleration sensor which is the vibration detection device 17.
  • the X axis is attached to the horizontal direction when viewed from the front of the main body
  • the Y axis is attached to the front / rear (rotation axis) direction
  • the Z axis is attached to the substantially vertical direction. It enables three-dimensional monitoring.
  • the vibration detection device 17 is attached to the upper part on the front side of the main body, which is the farthest from the vibration damping damper 16. This makes it possible to detect vibrations with high sensitivity even when shaking a large displacement especially during low-speed dewatering rotation.
  • Table 1 is a diagram showing main specifications of the acceleration sensor according to the first embodiment.
  • the output type is a digital serial peripheral interface (digital SPI), which is a multi-axis detection type sensor that can detect accelerations of three orthogonal axes (X, Y, and Z).
  • digital SPI digital serial peripheral interface
  • Two types of acceleration detection ranges can be set: a first detection range ( ⁇ 2 g to +2 g) and a second detection range ( ⁇ 6 g to +6 g), and the detection range can be switched by setting an internal register of the sensor.
  • the sensitivity of each detection range is about 1024 [LSb / g] for the first detection range and about 340 [LSb / g] for the second detection range, and the first detection range is higher than the second detection range. While it is sensitivity, the acceleration detection range is narrow.
  • the first detection range when the first detection range is set, it is possible to accurately measure the unbalance of the drum 11 by narrowing the acceleration detection range and setting the sensitivity large. Therefore, fine control can be performed.
  • the second detection range when the second detection range is set, the sensitivity is lowered and the acceleration detection range is set wide so that the acceleration can be detected in a wide range. It can respond appropriately.
  • an acceleration sensor that can switch between three or more acceleration detection ranges (for example, ⁇ 2 g, ⁇ 6 g, ⁇ 8 g) may be used, and specifications such as the allowable vibration range of the washing machine and the maximum drum rotation speed in the dewatering process may be used. It is desirable to select an optimal sensor according to the situation.
  • the output from the acceleration sensor is digital, it can be taken directly into the microcontroller more easily than the analog type, and it is strong against noise generated from an inverter circuit or the like that drives the motor 12, and is a noise removing device. Cost-increasing factors can be suppressed, such as eliminating the need for
  • FIG. 3A, FIG. 3B and FIG. 3C are graphs in which the detected acceleration is recorded together with the drum rotational speed as an example of the acceleration sensor output in the dewatering process of the drum type washing machine.
  • the acceleration sensor according to the first embodiment is a type that can detect gravitational acceleration in addition to dynamic acceleration, and gravitational acceleration ( ⁇ + 1 g) is always applied to the Z-axis, up to +2 g. This is because the margin of is less than the other two axes.
  • the amplitude (Peak-to-Peak value) itself is at the same level as the other two axes, but it is necessary to widen the detection range at an early timing.
  • FIG. 4 is a flowchart showing the acceleration detection range switching process in the dehydration process in the first embodiment, and is intended to switch the acceleration detection range according to the detected acceleration. Hereinafter, it demonstrates in order for every step.
  • the acceleration detection range is set to the first acceleration detection range ( ⁇ 2 g) by the control unit 20 (for example, a microcontroller) (step 1).
  • the control unit 20 for example, a microcontroller
  • step 3 the drum 11 starts rotating (step 2). Thereafter, the acceleration is constantly monitored to determine whether or not the detected acceleration exceeds the first acceleration detection range (step 3). In step 3, if the detected acceleration is within the first acceleration detection range, the rotation is continued without changing the detection range, and it is determined whether the dehydration set time has elapsed (step 4). If it is determined in step 3 that the first acceleration detection range has been exceeded, the rotation is continued after switching to the second acceleration detection range ( ⁇ 6 g) (step 5). Thereafter, it is determined whether the dehydration set time has elapsed (step 6). If it is determined in step 6 that the elapsed time for dehydration has not elapsed, the rotation is continued and the process returns to step 6.
  • step 7 If it is determined in step 6 that the elapsed time for dehydration has elapsed, the rotation of the drum 11 is terminated (step 7). If it is determined in step 4 that the dehydration set time has not elapsed, the process returns to step 3. If it is determined in step 4 that the dehydration set time has elapsed, the rotation of the drum 11 is terminated (step 7).
  • FIG. 5 is a time chart showing acceleration detection range switching processing in the dehydration process when an acceleration sensor capable of detecting vibrations in a plurality of directions is mounted.
  • FIG. 5 shows an example of processing for individually switching the acceleration detection range of each axis, processing for switching uniformly may be used.
  • the X-axis and Z-axis acceleration amplitudes are almost equal, and the Y-axis is relatively small relative to the other two axes. Since the Z-axis includes gravity acceleration in the vertical direction, the output of 1 g is already shown at the start of dehydration, and it can be seen that the timing of reaching 2 g is earlier than that of the X-axis. On the other hand, the Y-axis is an acceleration that falls within ⁇ 2 g through the dehydration process, and can be detected with the initial acceleration detection range 1 as it is.
  • vibrations having different amplitudes depending on the detection direction change randomly each time driving is performed depending on the degree of bias of the laundry stuck in the drum 11, and may have vibrations having a tendency different from that of the acceleration waveform in FIG. 5.
  • the acceleration detection range for each direction by switching the acceleration detection range for each direction according to a change in acceleration, it is possible to always detect vibration with a setting with good sensitivity.
  • FIG. 6 is a block diagram of a control device that detects and suppresses vibration due to unbalance of laundry in the washing machine (drum type) in the second embodiment.
  • the rotation speed detection device 21 that detects the rotation speed of the drum 11 is provided, and the acceleration detection range can be switched according to the detected rotation speed.
  • FIG. 7 is a flowchart showing the acceleration detection range switching process in the dehydration process according to the second embodiment, in which the acceleration detection range is switched according to the number of rotations of the drum 11.
  • FIG. 7 demonstrates in order for every step.
  • control unit 20 sets the acceleration detection range to the first acceleration detection range ( ⁇ 2 g) (step 1).
  • step 3 the drum 11 starts rotating (step 2). Thereafter, the rotational speed is increased, and it is determined whether or not the acceleration detection range switching rotational speed (330 rpm in the second embodiment) has been reached (step 3). During this time, the acceleration is constantly monitored, and if a predetermined acceleration or more leading to abnormal vibration is detected, the rotation is stopped. If it is determined in step 3 that the rotational speed of the drum 11 has not reached the predetermined rotational speed, the rotational speed continues to increase and returns to step 3. If it is determined in step 3 that the rotation speed of the drum 11 has reached the predetermined rotation speed, the acceleration detection range is switched to the second acceleration detection range while maintaining the rotation of the drum 11 constant.
  • the acceleration detection range is switched to the second acceleration detection range while maintaining the rotation of the drum 11 constant.
  • step 5 it is determined whether the dehydration set time has elapsed. If it is determined in step 5 that the dehydration elapsed time has not elapsed, the rotation is continued and the process returns to step 5. If it is determined in step 5 that the dehydration time has elapsed, the rotation of the drum 11 is terminated (step 6).
  • the rotation speed for switching the acceleration detection range may be any rotation speed that avoids the resonance range (120 to 300 rpm) in which the acceleration varies greatly. Further, the acceleration detection range is switched while rotating the drum 11 at a constant speed. As a result, it is possible to prevent the detection range from being exceeded due to a sudden acceleration increase in the resonance region, resulting in no detection.
  • FIG. 8A, FIG. 8B, FIG. 8C, and FIG. 8D are time charts showing the acceleration detection range switching process in the dehydration process when an acceleration sensor capable of detecting vibrations in a plurality of directions is mounted.
  • the acceleration detection range of each axis is switched uniformly, and can be switched individually.
  • the drum rotation speed is increased after setting the first acceleration detection range, the constant speed is maintained at 330 rpm after passing through the resonance region, and the second acceleration detection range is switched after a predetermined time. Since the amplitude of the resonance region in the second embodiment has a margin with respect to the first acceleration detection range ( ⁇ 2 g), there is no problem even if switching is performed after passing through the resonance region.
  • FIG. 9 is a flowchart showing a process for switching the acceleration detection range in the dehydration process.
  • the acceleration detection range is switched according to the number of rotations of the drum 11 to determine whether dehydration can be continued.
  • it demonstrates in order for every step.
  • control unit 20 sets the acceleration detection range to the first acceleration detection range ( ⁇ 2 g) with the finest detection resolution (step a).
  • step b the drum 11 starts rotating.
  • step c a loosening process for eliminating tangling and unevenness of clothing is performed.
  • step d acceleration of rotation of the drum 11 is started.
  • the threshold value indicates the vibration when the vibration of the water tank 13 is equal to or higher than a specific vibration in the relationship between the acceleration and the vibration, and the threshold value 1 is within the first detection range. This is a reference value for detecting abnormal vibration.
  • step e If it is determined in step e that the detected acceleration does not exceed the threshold value 1, it is determined whether or not the acceleration detection range switching speed has been reached (step i). If it is determined in step i that the acceleration detection range switching speed has not been reached, the process returns to step e. If it is determined in step i that the acceleration detection range switching rotational speed has been reached, the acceleration detection range is wider than the first acceleration detection range (the detection resolution is coarse). (Step j). Next, it is determined whether or not the detected acceleration exceeds a threshold value 2 (step k).
  • the threshold value 2 is a reference value for detecting abnormal vibration within the second detection range.
  • step l If it is determined in step k that the detected acceleration does not exceed the threshold value 2, it is determined whether or not the dehydration set time has elapsed (step l). If it is determined in step l that the dehydration set time has not elapsed, the process returns to step k. When it is determined in step l that the dehydration set time has elapsed, the rotation of the drum 11 is terminated, dehydration is terminated, and the process proceeds to the next process (step m). If it is determined in step e that the detected acceleration has exceeded the threshold value 1 and if it is determined in step k that the detected acceleration has exceeded the threshold value 2, it is regarded as a state of abnormal vibration, and the rotation of the drum 11 is determined. Decelerate and stop (step f).
  • step g it is determined whether or not the stop due to the detected acceleration exceeding the threshold has reached a predetermined number of times. If it is determined in step g that the number of rotations of the drum 11 due to the large vibration level has not reached the predetermined number, the process returns to step a and restarts dehydration. If it is determined that the number of rotation stops of the drum 11 due to the large vibration level has reached the predetermined number, it is considered that the unbalanced state will not be resolved even if the dehydration is continued further, Error notification is performed (step h).
  • the detection resolution of the acceleration sensor is made fine so that vibration can be detected accurately even at a minute vibration level, and the acceleration detection range is set narrow when the drum 11 is below the predetermined rotation speed. Further, the acceleration detection range can be expanded above the predetermined number of rotations compared to the case of the predetermined number of rotations or less, and an acceleration level that increases as the rotation of the drum 11 increases can be dealt with. By doing so, it becomes possible to efficiently avoid the abnormal vibration corresponding to the vibration level that varies greatly as the drum rotation speed increases.
  • the drum rotation may be decelerated when the acceleration detected by the vibration detecting device 17 exceeds a predetermined acceleration when the rotation number of the drum 11 is less than or equal to the resonance range (120 to 300 rpm).
  • the acceleration of the water tank 13 is detected in a minute region and the vibration level is high, it is possible to prevent abnormal vibration in advance by decelerating or stopping the rotation of the drum 11, and the operation efficiency of the dehydration process Improvement and low vibration dehydration can be realized.
  • the present invention can also be applied in the washing process of a drum type washing machine.
  • FIG. 10 is a flowchart showing the acceleration detection range switching process in the washing process of the drum type washing machine.
  • the washing process of the drum type washing machine is a tumbling method in which the laundry is lifted up by a baffle attached to the inner side surface of the drum 11 and the dirt is removed by dropping the lifted laundry. Therefore, as the impact (acceleration) at the time of dropping increases, the degree of cleaning tends to increase. Therefore, the degree of cleaning can be increased by controlling the number of rotations of the motor 12 according to the acceleration.
  • the acceleration of the water tank 13 due to the drop impact of the clothing during the washing process is extremely small compared to the acceleration during the dehydration process (particularly during high-speed rotation). Accordingly, when controlling the washing operation according to the acceleration, it is necessary to increase the sensitivity.
  • control unit 20 sets the acceleration detection range to the first acceleration detection range ( ⁇ 2 g) (step 1).
  • the drum 11 starts to rotate (step 2). Thereafter, tumbling is performed while constantly monitoring acceleration.
  • step 3 it is always determined whether the detected acceleration exceeds the first detection range. If it is determined in step 3 that the detected acceleration exceeds the first detection range, the rotation is continued after the acceleration detection range is switched to the second acceleration detection range (step 5). Next, it is determined whether or not the rotation on time has elapsed (step 6). If it is determined in step 6 that the rotation on time has not elapsed, the process returns to step 6. If it is determined in step 6 that the rotation-on time has elapsed, the rotation of the drum 11 is stopped (step 7). Next, it is determined whether or not the set washing time has elapsed (step 8).
  • step 8 If it is determined in step 8 that the set washing time has elapsed, the drum rotation is terminated and the process proceeds to the next step. If it is determined in step 8 that the set washing time has not elapsed, it is determined whether or not a predetermined rotation-off time has elapsed (step 9).
  • step 9 If it is determined in step 9 that the predetermined rotation off time has not elapsed, the process returns to step 9. If it is determined in step 9 that the predetermined rotation-off time has elapsed, the drum rotation is reversed (step 10). And it returns to step 1. When it is determined in step 3 that the detected acceleration does not exceed the first detection range, the rotation is continued without changing the detection range, and it is determined whether a predetermined rotation on time has elapsed (step). 4). If it is determined in step 4 that the predetermined rotation on time has not elapsed, the process returns to step 3. When it is determined that the predetermined rotation on time has elapsed, the rotation of the drum 11 is stopped (step 7).
  • the operation process (washing, dehydration, etc.) of the washing machine As described above, the operation process (washing, dehydration, etc.) of the washing machine, the drum rotation speed or the structure of the machine body (characteristics and layout of the vibration damping damper 16 and the support spring 15, the size and inclination angle of the drum 11, and the vibration detection device 17.
  • the detected acceleration varies widely, so it is important to switch to an optimum acceleration detection range. Therefore, it is possible to realize highly accurate vibration detection by switching the acceleration detection range according to the detected acceleration and the drum rotation speed.
  • the drum is not only for the case where the acceleration detected by the vibration detection device 17 is increased by increasing the number of rotations of the drum 11 as in the first embodiment, but also for some reason such as imbalance occurring depending on the state of the laundry.
  • the acceleration detected by the vibration detection device 17 is reduced by lowering the rotation number of 11, the acceleration detection range in the subtracted direction is narrowed when the acceleration in a certain direction falls within the predetermined acceleration detection range. Therefore, highly accurate vibration detection can be realized.
  • the accuracy of vibration detection can be improved and the switching of the acceleration detection range can be simplified.
  • the rotation speed of the drum 11 is controlled while monitoring that the detected acceleration of the vibration detection device 17 does not exceed the maximum acceleration detection range ( ⁇ 6 g in the third embodiment) when the rotation of the drum 11 is increased, an abnormality will occur. It can realize vibration prevention and high-speed rotation as much as possible, and low vibration and improved dewatering performance.
  • the drum provided with water passage holes on the outer periphery, the water tank containing the drum and storing the washing water, the motor for rotationally driving the drum, the housing for housing the water tank, and the rotational speed for detecting the rotational speed of the drum
  • a vibration detection device composed of a detection device, an acceleration sensor capable of detecting vibrations in the aquarium and switching a plurality of acceleration detection ranges having different minimum acceleration resolutions, and a motor and vibration based on the output of the vibration detection device
  • a control unit for controlling the detection device is provided, and the control unit switches the acceleration detection range according to the number of rotations of the drum, and accordingly appropriately detects the acceleration detection range according to the vibration level (acceleration) of the water tank that varies according to the number of rotations.
  • a drum having a water passage hole on the outer periphery, a water tank that encloses the drum and stores washing water, a motor that rotationally drives the drum, a housing that houses the water tank, vibrations of the water tank, and a minimum acceleration resolution
  • a vibration detection device configured by an acceleration sensor capable of switching a plurality of acceleration detection ranges having different values
  • a control unit that controls the motor and the vibration detection device based on the output of the vibration detection device.
  • the control unit expands and fixes the acceleration detection range of the vibration detection device so that the acceleration peak value does not exceed the acceleration detection range of the acceleration sensor. As described above, it is possible to appropriately control the setting with high sensitivity, and it is possible to improve the accuracy of vibration detection.
  • control unit switches the acceleration detection range by avoiding the resonance range where the fluctuation of acceleration is large in the dehydration process by switching the acceleration detection range of the vibration detection device before and / or after the dehydration resonance range.
  • stable acceleration detection can be performed in the dehydration resonance region.
  • control unit determines the acceleration detection range in the direction exceeding the acceleration detection range when the detected acceleration in any direction of the vibration detection device capable of detecting vibrations in a plurality of directions exceeds the acceleration detection range.
  • control unit expands the acceleration detection range in all directions when the detected acceleration in any direction of the vibration detection device capable of detecting vibrations in a plurality of directions exceeds the acceleration detection range.
  • the acceleration detection range switching process by the control unit can be simplified.
  • control unit detects the direction within the acceleration detection range when the detected acceleration in any direction of the vibration detection device capable of detecting vibrations in a plurality of directions falls within the predetermined acceleration detection range.
  • control unit narrows the acceleration detection range in all directions when the detected acceleration in all directions of the vibration detection device capable of detecting vibrations in a plurality of directions falls within a predetermined acceleration detection range. By doing so, it is possible to select a highly sensitive acceleration detection range according to the vibration level, not only improve the accuracy of vibration detection, but also simplify the acceleration detection range switching processing by the control unit Can do.
  • control unit switches the acceleration detection range of the vibration detection device while the drum rotation speed is constant, thereby detecting vibration in a rotation region where there is a large acceleration fluctuation when the drum rotation speed increases or decreases. Can be performed accurately.
  • control unit can always perform vibration detection at the start of dehydration with low acceleration with a highly sensitive setting by narrowing the acceleration detection range of the vibration detection device at the start of drum rotation.
  • control unit controls the drum rotation speed so that the detected acceleration of the vibration detection device does not exceed the maximum acceleration detection range when the drum rotation speed rises. Dehydration can be achieved by rotation, and both low vibration and improved dewatering performance can be realized.
  • the acceleration sensor can switch the acceleration detection range only by switching the set value of the internal register, a separate switch for switching the acceleration detection range is unnecessary, and the vibration detection device is simplified. be able to.
  • control unit sets the acceleration detection range of the vibration detection device to be narrower below the predetermined drum rotation speed than when the predetermined drum rotation speed is exceeded, and the detected acceleration reduces the predetermined acceleration.
  • the control unit sets the acceleration detection range of the vibration detection device to be narrower below the predetermined drum rotation speed than when the predetermined drum rotation speed is exceeded, and the detected acceleration reduces the predetermined acceleration.
  • control unit decelerates the drum rotation when the acceleration detected by the vibration detection device during the increase in the drum rotation speed exceeds a predetermined acceleration, thereby changing the acceleration of the water tank that changes with the increase in the drum rotation speed.
  • the drum rotation can be decelerated or stopped to prevent the vibration from increasing in advance, thereby reducing vibration and noise especially in the dehydration process. Therefore, operation time can be reduced by low vibration, low noise operation, and efficient operation.
  • control unit decelerates the drum rotation when the acceleration detected by the vibration detection device below the resonance range exceeds a predetermined acceleration, so that the acceleration of the water tank is reduced in a region where the acceleration below the resonance rotation number is very small. If the vibration level is high and the drum rotation is decelerated or stopped, abnormal vibration can be prevented in advance, improving the operating efficiency of the dehydration process and realizing low vibration dehydration. Can do.
  • the washing machine according to the present invention can use the most sensitive acceleration detection range according to the detected acceleration and the number of rotations of the drum, improving the vibration detection accuracy, and at the time of dehydration and washing. It is useful for suppressing the vibration of time accurately.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
PCT/JP2009/004153 2008-09-01 2009-08-27 洗濯機 WO2010023912A1 (ja)

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KR1020117007517A KR101253404B1 (ko) 2008-09-01 2009-08-27 세탁기
EP09809568.0A EP2319971A4 (de) 2008-09-01 2009-08-27 Waschmaschine
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JP2009143860A JP2010075669A (ja) 2008-09-01 2009-06-17 洗濯機

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WO (1) WO2010023912A1 (de)

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JP2011188986A (ja) * 2010-03-15 2011-09-29 Toshiba Corp ドラム式洗濯機
JP2012005553A (ja) * 2010-06-23 2012-01-12 Hitachi Appliances Inc 洗濯機
EP2597187A1 (de) * 2011-02-23 2013-05-29 Panasonic Corporation Trommelwaschmaschine

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JP5753974B2 (ja) * 2011-02-23 2015-07-22 パナソニックＩｐマネジメント株式会社 ドラム式洗濯機
CN102888738B (zh) * 2011-07-06 2015-04-15 株式会社东芝 洗衣机
JP5788287B2 (ja) * 2011-07-06 2015-09-30 株式会社東芝 洗濯機
CN104593995B (zh) * 2013-10-31 2018-10-12 合肥海尔洗衣机有限公司 洗衣机撞桶检测控制装置及方法
CN106676818B (zh) * 2015-11-09 2021-03-19 无锡小天鹅电器有限公司 波轮洗衣机脱水桶的检测方法和系统
JP2017209295A (ja) * 2016-05-25 2017-11-30 シャープ株式会社 洗濯機
DE102016213232A1 (de) * 2016-07-20 2018-01-25 BSH Hausgeräte GmbH Haushaltsgerät mit verbesserter Steuerung und Verfahren zum Betrieb eines solchen Haushaltsgeräts
JP6753726B2 (ja) * 2016-08-10 2020-09-09 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． ドラム式洗濯機の制御方法
CN107059334B (zh) * 2017-05-08 2020-06-16 无锡飞翎电子有限公司 波轮洗衣机偏心检测装置及波轮洗衣机
CN109487486B (zh) * 2017-09-11 2021-12-03 无锡小天鹅电器有限公司 衣物处理装置的控制方法及衣物处理装置
CN113026296A (zh) * 2019-12-09 2021-06-25 青岛海尔洗衣机有限公司 洗衣机控制方法和洗衣机

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JP2011188986A (ja) * 2010-03-15 2011-09-29 Toshiba Corp ドラム式洗濯機
JP2012005553A (ja) * 2010-06-23 2012-01-12 Hitachi Appliances Inc 洗濯機
EP2597187A1 (de) * 2011-02-23 2013-05-29 Panasonic Corporation Trommelwaschmaschine
EP2597187A4 (de) * 2011-02-23 2014-08-27 Panasonic Corp Trommelwaschmaschine

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CN102137966A (zh) 2011-07-27
TW201020362A (en) 2010-06-01
TWI378165B (de) 2012-12-01
EP2319971A4 (de) 2018-02-14
CN102137966B (zh) 2014-01-15
KR20110048073A (ko) 2011-05-09
EP2319971A1 (de) 2011-05-11
JP2010075669A (ja) 2010-04-08
KR101253404B1 (ko) 2013-04-11

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