WO2010026719A1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
WO2010026719A1
WO2010026719A1 PCT/JP2009/004193 JP2009004193W WO2010026719A1 WO 2010026719 A1 WO2010026719 A1 WO 2010026719A1 JP 2009004193 W JP2009004193 W JP 2009004193W WO 2010026719 A1 WO2010026719 A1 WO 2010026719A1
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WO
WIPO (PCT)
Prior art keywords
drum
vibration
frequency component
receiving cylinder
laundry
Prior art date
Application number
PCT/JP2009/004193
Other languages
French (fr)
Japanese (ja)
Inventor
脇田克也
蒲生健
広田弘美
皆吉裕子
野村博義
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 CN2009801344117A priority Critical patent/CN102144061B/en
Priority to KR1020117007510A priority patent/KR101257174B1/en
Priority to EP09811249.3A priority patent/EP2325366B1/en
Publication of WO2010026719A1 publication Critical patent/WO2010026719A1/en

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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
    • D06F25/00—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 and having further drying means, e.g. using hot air 
    • 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
    • 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
    • D06F2103/26—Imbalance; Noise level

Definitions

  • the present invention relates to a drum-type washing machine that includes a rotatable drum in a receiving tube that is elastically supported, and performs washing, rinsing, and dehydration or drying of the laundry in the drum.
  • the drum behavior during washing operation such as unbalance detection control during dehydration and laundry movement amount detection control during washing, and the laundry behavior in the drum are measured. ⁇ Estimated.
  • the laundry situation is appropriately improved by controlling the imbalance during dehydration and controlling the amount of movement of the laundry during washing. .
  • a semiconductor acceleration sensor is attached to a drum receiving cylinder, and, as shown in FIG. 6, a laundry garment (laundry) is obtained from a change amount 61 of an acceleration sensor output and a change amount 62 of a torque current component of a motor.
  • the behavior of the object The controller 63 changes the number of rotations of the motor that rotates the drum according to the estimated behavior of the laundry.
  • the present invention provides a washing machine with excellent washing performance by accurately grasping the washing situation and rotating the drum at a rotation speed optimum for washing.
  • the present invention includes a drum that accommodates and rotates laundry, a receiving cylinder that accommodates the drum, an elastic suspension that suspends the receiving cylinder from above the housing, and a vibration damper that supports the receiving tube from below the housing, And a motor for rotating the drum. Further, the present invention provides a vibration detection unit that detects vibration of the receiving cylinder, a frequency component calculation unit that calculates a frequency component for the vibration detected by the vibration detection unit, and a frequency component calculated by the frequency component calculation unit. And a rotation speed control unit that changes the rotation speed of the motor according to the size.
  • the elastic suspension part suspends the receiving tube from a position symmetrical with respect to the rotation axis of the drum, and the vibration detection unit detects vibration in the front-rear direction of the receiving tube. Further, the rotation speed control unit changes the rotation speed of the motor according to the magnitude of the frequency component calculated for the vibration in the front-rear direction.
  • the present invention also provides a drum that accommodates and rotates laundry, a receiving cylinder that accommodates the drum, an elastic suspension that suspends the receiving cylinder from above the housing, and a vibration damping damper that supports the receiving tube from below the housing. And a motor for rotating the drum. Further, the present invention provides a vibration detection unit that detects vibration of the receiving cylinder, a frequency component calculation unit that calculates a frequency component for the vibration detected by the vibration detection unit, and a frequency component calculated by the frequency component calculation unit. And a rotation speed control unit that changes the rotation speed of the motor according to the size. Further, the elastic suspension unit suspends the receiving tube from a position on the rotation axis of the drum, and the vibration detection unit detects vibration in the left-right direction of the receiving tube. Further, the rotation speed control unit changes the rotation speed of the motor according to the magnitude of the frequency component calculated for the vibration in the left-right direction.
  • the direction of the vibration component derived from the vibration of the receiving tube due to the movement of the laundry is determined by the difference in the support position of the receiving tube with respect to the housing. That is, the direction of the vibration component used for calculation value calculation in the frequency component calculation unit is determined. Accordingly, it is possible to accurately grasp the movement of the laundry in the drum, perform drum rotation control suitable for washing clothes, and improve the cleaning performance.
  • FIG. 1 is a schematic side view of a washing machine according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic top view showing the washing machine support structure according to Embodiment 1 of the present invention.
  • FIG. 3A is a graph showing the longitudinal component analysis results obtained from the vibration of the receiving cylinder of the washing machine in the first embodiment of the present invention.
  • FIG. 3B is a graph showing a left-right direction component analysis result obtained from vibration of a receiving cylinder of the washing machine in the first embodiment of the present invention.
  • FIG. 3C is a graph showing the vertical component analysis result obtained from the vibration of the receiving cylinder of the washing machine in the first embodiment of the present invention.
  • FIG. 3A is a graph showing the longitudinal component analysis results obtained from the vibration of the receiving cylinder of the washing machine in the first embodiment of the present invention.
  • FIG. 3B is a graph showing a left-right direction component analysis result obtained from vibration of a receiving cylinder of the washing machine in the first embodiment of the present invention.
  • FIG. 4 is an explanatory diagram of a washing state inside the drum of the washing machine according to the first embodiment of the present invention.
  • FIG. 5 is a schematic top view showing the washing machine support structure according to Embodiment 2 of the present invention.
  • FIG. 6 is a diagram for explaining the control of the motor rotation speed in a conventional washing machine.
  • FIG. 1 is a schematic side view of the washing machine according to the first embodiment.
  • a receiving cylinder 2 containing a rotatable drum 1 is supported by a housing 5 by an elastic hanging portion 3 and a vibration damping damper 4.
  • a motor 6 is fixed to the bottom of the receiving tube 2, and the drum 1 is rotated at a predetermined rotational speed via a belt 7.
  • the laundry garment 9 as the laundry put into the drum 1 through the garment loading / unloading port 8 provided in the front of the washing machine is scooped up by the baffle 10 provided in the drum 1 as the drum 1 rotates. And falls from the top to the bottom.
  • the cleaning effect is enhanced by the kinetic energy when struck against the bottom.
  • the vibration of the receiving tube 2 generated by the movement of the laundry 9 is detected by the vibration detection unit 11 and the detection result is transmitted to the frequency component calculation unit 12. Further, the value calculated by the frequency component calculation unit 12 is transmitted to the rotation speed control unit 13, and the motor 6 is corrected and controlled by the rotation speed control unit 13 to a rotation speed at which appropriate tapping is realized.
  • the support position of the vibration isolating damper 4 is attached on the substantially vertical line or on the vertical line from the center of gravity when the drum 1 and the receiving cylinder 2 are combined.
  • This is detected by the vibration detection unit 11 by stabilizing the bottom of the receiving tube 2 because the vibration at the bottom is large and the shock is continuously received when the laundry 9 falls from the top of the drum 1. This is so as not to include shaking other than the movement of the laundry 9 in the signal to be performed.
  • the vibration detection unit 11 of the present embodiment includes an acceleration sensor, and the acceleration sensor may be any of a semiconductor acceleration sensor, a piezoelectric acceleration sensor, and the like.
  • FIG. 2 shows an example of a schematic top view showing the support structure in the present embodiment.
  • the center of gravity point 14 indicates the center of gravity in a state where the drum 1 and the receiving tube 2 are combined.
  • the receiving tube 2 is supported by the elastic suspension 3 at two support points 15.
  • the center axis 16 indicates the rotation axis of the drum 1.
  • the elastic suspension part 3 suspends the receiving tube 2 from a position symmetrical with respect to the central axis 16 line of the drum 1. More specifically, the elastic suspension portion 3 is a position on a plane including the center of gravity 14 in a state where the drum 1 and the receiving cylinder 2 are combined, and includes the center axis 16 of the drum 1 and extends in the vertical direction. The receiving tube 2 is suspended from a position symmetrical with respect to the plane.
  • the frequency component calculation unit 12 performs discrete Fourier transform (DFT) or fast Fourier transform (FFT) from the received acceleration value to calculate the magnitude of the frequency component (Fourier amplitude spectrum, power spectrum).
  • the rotation speed control unit 13 can increase or decrease the number of rotations of the drum according to the size of the specific frequency component calculated by the frequency component calculation unit 12 or the sum of the frequency components, thereby improving the washing performance of the laundry. Become.
  • the movement of the laundry garment 9 is received with a specific cycle that occurs when the laundry 9 is placed in a tapping state that is effective for removing dirt during washing.
  • the vibration from the cylinder 2 is alleviated by the elastic suspension portion 3 in the left-right direction, and is alleviated by the vibration-proof damper 4 in the up-down direction. Therefore, it becomes impossible to grasp the exact frequency component. Accordingly, in this case, the vibration in the front-rear direction reflects the movement of the laundry garment 9 moving inside the drum 1 with the least relaxation.
  • an acceleration sensor of the vibration detection unit 11 that can detect only in the front-rear direction, but vibration in three axes (front-rear, left-right, up-down) can be detected, and the front and rear A configuration may be adopted in which only vibration in the direction is employed.
  • the elastic suspension portion 3 that connects the receiving tube 2 and the upper portion of the housing 5 is in a symmetrical position with the center of gravity 14 on the central axis 16 as the center.
  • the analysis result when the vibration from the receiving cylinder 2 is decomposed into each direction component in the supported state is shown.
  • FIG. 3A to FIG. 3C cleaning evaluation was performed with the drum 1 rotating at 45 rpm and the weight of the laundry garment 9 being 2.0 kg.
  • 3A is a graph showing the analysis result of the longitudinal component obtained from the vibration of the receiving cylinder 2
  • FIG. 3B is a graph showing the analysis result of the horizontal component
  • FIG. 3C is the analysis result of the analytic component in the vertical direction. It is a graph which shows.
  • the circle in FIG. 4 represents the opening of the drum 1, and the bottom surface is represented as 0 ° and the upper portion is represented as 180 °. Since rotation of the drum is reversed at 90 ° and 270 °, there is no problem even if reversed left and right. Now, in order to improve the cleaning performance, it is most suitable to tap the washing garment 9 with the baffle 10 (see FIG. 1) and drop it from the top (trajectory b). When the laundry clothes 9 sticks to the drum 1 and moves (trajectory c), or when the laundry clothes 9 rotate around the bottom of the drum 1 (trajectory a), it is unsuitable for improving the cleaning performance. is there.
  • the condition that the garment can be washed is a frequency of 1. 5 Hz to 3.0 Hz. If the frequency is less than 1.5 Hz, the laundry garment 9 rotates at the bottom and the laundry garment 9 is attached to the drum 1 at a frequency higher than 3.0 Hz.
  • the sum of the peak values for each specific frequency interval (for example, 0.15 Hz) in each frequency region is the peak value for each specific frequency interval (for example, 0.15 Hz) in all frequency regions.
  • the vibration direction was the front-rear direction
  • the state of washing was 48%
  • the grooving state was 16%
  • the sticking state was 36%
  • the vibration direction was the left-right direction
  • the state of washing was 35%
  • the grooving state was 33%
  • the sticking state was 32%.
  • the vibration direction was the vertical direction
  • the washing state was 36%
  • the grooving state was 39%
  • the sticking state was 25%.
  • the vibration component in the front-rear direction largely reflects the signal of the washing state and can be clearly distinguished from signals in other areas. Therefore, even when the value fluctuates with time, it can be determined that the vibration component in the front-rear direction corresponds to the movement of the clothes in the drum.
  • the control is performed so that the amplitude spectrum of the frequency component resulting from the washing is increased as described above. If there are many components with a frequency longer than the frequency component region (for example, 1.5 Hz to 3.0 Hz when the drum rotational speed is 45 rpm) due to the washing with a beat, the drum It is considered that the laundry garment 9 is attached to the wall surface of the drum 1 and is rotating without falling at the upper part of the drum 1. Therefore, it is predicted that the frequency of vibration applied to the drum 1 is reduced. Therefore, control is performed such that the laundry 1 is dropped from the wall surface of the drum 1 by reducing the rotation speed of the drum 1.
  • the present embodiment includes a drum 1 that accommodates and rotates laundry, a receiving cylinder 2 that accommodates the drum 1, and an elastic suspension portion 3 that suspends the receiving cylinder 2 from above the housing 5.
  • the vibration isolating damper 4 that supports the receiving tube 2 from below the housing 5, the motor 6 that rotates the drum 1, the vibration detecting unit 11 that detects the vibration of the receiving tube 2, and the vibration detected by the vibration detecting unit 11
  • a frequency component calculation unit 12 that calculates the frequency component
  • a rotation speed control unit 13 that changes the rotation speed of the motor 6 according to the magnitude of the frequency component calculated by the frequency component calculation unit 12, and an elastic suspension unit 3 suspends the receiving tube 2 from a position symmetrical with respect to the rotation axis 16 of the drum 1,
  • the vibration detecting unit 11 detects vibration in the front-rear direction of the receiving tube 2, and the rotational speed control unit 13 Calculated for vibration in direction Having the configuration of changing the rotational speed of the motor 6 according to the magnitude of the frequency component.
  • the clothes rotate with the rotation of the drum 1, and when the clothes are lifted and dropped from above, they collide with the lower drum and generate vibration.
  • the elastic suspension part 3 suspends the receiving tube 2 from a position symmetrical with respect to the rotation axis 16 line of the receiving tube 2. For this reason, the movement of the receiving tube in the left-right direction is alleviated by the elastic force of the elastic suspension part 3, resulting in vibration unrelated to the movement of the clothing. Similarly, the movement of the receiving cylinder 2 in the vertical direction is also mitigated by the elastic force and damping force of the vibration damping damper 4. However, the vibration in the front-rear direction of the receiving tube 2 can be sufficiently detected without being buffered by the elastic suspension part 3 or the vibration damping damper 4.
  • FIG. 5 is a schematic top view showing a support structure according to Embodiment 2 of the present invention.
  • the same reference numerals are used for the same components as in the first embodiment, and description thereof is omitted.
  • the elastic suspension part 3 that connects the receiving tube 2 and the upper part of the housing 5 includes a center of gravity point 14 on a substantially central axis 16. Alternatively, it is supported at a support point 15 on the central axis 16. In this case, the suspension is balanced with the vibration damping damper 4 that supports the lower portion of the receiving tube 2. Therefore, periodic vibration is generated according to the movement of the laundry clothes 9 inside the drum 1.
  • Other configurations of the washing machine are the same as those in the first embodiment.
  • the vibration detection unit 11 detects at least one vibration component of the upper, lower, left, and right of the receiving cylinder 2, and the detected acceleration in the direction is sent to the frequency component calculation unit 12 as a signal value, and then the rotational speed control is performed. Used as output to the unit 13.
  • the frequency component calculator 12 performs discrete Fourier transform (DFT) or fast Fourier transform (FFT) from the received acceleration value to calculate the magnitude of the frequency component (Fourier amplitude spectrum, power spectrum).
  • DFT discrete Fourier transform
  • FFT fast Fourier transform
  • the rotational speed control unit 13 can improve the cleaning performance of the laundry garment 9 by increasing or decreasing the number of rotations of the drum according to the calculated magnitude of the specific frequency component and the sum of the frequency components.
  • the elastic suspension part 3 suspends the receiving tube 2 from a position on the rotation axis 16 line of the drum 1 as shown in FIG. More specifically, the elastic suspension part 3 suspends the receiving tube 2 from the position of a plane including the rotation axis 16 line of the drum 1 and extending in the vertical direction.
  • the number of supporting portions of the elastic suspension part 3 may be one as shown in FIG. 5 or may be two in the front-rear direction at the position of the plane. It is not limited.
  • the movement of the laundry garment 9 has a specific cycle that occurs when placed in a tapping state that is effective in removing dirt.
  • the vibration from the receiving cylinder 2 is relieved by the elastic suspension part 3 in the front-rear direction, and is relieved by the vibration-proof damper 4 in the up-down direction. Therefore, in this case, the vibration in the left-right direction reflects the movement of the laundry 9 that is moving inside the drum 1 without being relaxed. Therefore, in the present embodiment, it is sufficient to attach an acceleration sensor of the vibration detection unit 11 that can detect only in the left-right direction.
  • vibrations in three axes front-rear, left-right, up-down
  • a structure that employs only vibration in the direction may be employed.
  • the vertical direction and the left and right are actually relative to the central axis 16 of the drum 1.
  • vibration is relatively greater than in the front-rear direction. Therefore, detecting the vibration in the left-right direction is advantageous in this case in order to grasp the movement of the laundry 9 in the drum 1. Therefore, in the case where the support structure is as shown in FIG. 5, the cleaning performance is enhanced by controlling the rotational speed of the drum using the vibration component in the horizontal direction of the receiving tube 2 as in the first embodiment. It becomes possible.
  • the rotation speed of the drum 1 is decreased to control the laundry 9 to drop from the drum 1 wall surface.
  • the present embodiment includes a drum 1 that accommodates and rotates laundry, a receiving cylinder 2 that accommodates the drum 1, and an elastic suspension portion 3 that suspends the receiving cylinder 2 from above the housing 5.
  • the vibration isolating damper 4 that supports the receiving tube 2 from below the housing 5, the motor 6 that rotates the drum 1, the vibration detecting unit 11 that detects the vibration of the receiving tube 2, and the vibration detected by the vibration detecting unit 11
  • a frequency component calculation unit 12 that calculates the frequency component
  • a rotation speed control unit 13 that changes the rotation speed of the motor 6 according to the magnitude of the frequency component calculated by the frequency component calculation unit 12, and an elastic suspension unit 3 suspends the receiving tube 2 from a position on the rotation axis 16 of the drum 1,
  • the vibration detecting unit 11 detects left-right vibration of the receiving tube 2, and the rotational speed control unit 13 detects vibration in the left-right direction.
  • the clothes rotate with the rotation of the drum 1, and when the clothes are lifted and dropped from above, they collide with the lower drum 1 to generate vibration.
  • the elastic suspension part 3 suspends the receiving tube 2 from a position on the rotation axis 16 line of the receiving tube 2. For this reason, the movement of the receiving tube 2 in the front-rear direction is alleviated by the elastic force of the elastic suspension part 3, and the vibration is not related to the movement of the clothes. Similarly, the movement of the receiving cylinder 2 in the vertical direction is also mitigated by the elastic force and damping force of the vibration damping damper 4. However, the vibration in the left-right direction of the receiving cylinder 2 can be sufficiently detected without being buffered by the elastic suspension part 3 or the vibration damping damper 4.
  • the direction of the vibration component derived from the vibration of the receiving tube due to the movement of the laundry is determined by the difference in the support position of the receiving tube with respect to the housing. That is, the direction of the vibration component used for calculation value calculation in the frequency component calculation unit is determined. Accordingly, it is possible to accurately grasp the movement of the laundry in the drum, perform drum rotation control suitable for washing clothes, and improve the cleaning performance.
  • the washing machine of the present invention can improve the washing performance by controlling the rotation speed of the drum in accordance with the washing state of the clothes. This is widely applicable not only to a home-use washing machine but also to a washing / drying machine and a commercial washing machine.

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

Abstract

An elastic suspension unit (3), with which a receiving cylinder (2) is suspended from the top of a housing (5), suspends the receiving cylinder (2) from a position that is symmetrical to the rotation axis of a drum (1). An oscillation detection unit (11) detects the oscillation of the receiving cylinder (2), detecting the oscillation in the forward and rearward directions of the receiving cylinder (2). A rotational velocity control unit (13) changes the rotational velocity of a motor (6) according to the size of a frequency component for the forward and rearward oscillation that is calculated by a frequency component calculation unit (12); thus, the state of the clothes can be detected accurately, and the rotational velocity of the drum (1) can be controlled, enabling an improvement in the cleaning performance of a washing machine.

Description

洗濯機Washing machine
　本発明は、弾性支持された受け筒内に回転可能なドラムを備え、そのドラム内で洗濯物の洗い、すすぎ、及び、脱水または乾燥を行うドラム式の洗濯機に関するものである。 The present invention relates to a drum-type washing machine that includes a rotatable drum in a receiving tube that is elastically supported, and performs washing, rinsing, and dehydration or drying of the laundry in the drum.
　従来、このようなドラム式の洗濯機では、脱水時のアンバランス検出制御や、洗い時の洗濯物移動量検出制御など洗濯運転時におけるドラムの挙動や、ドラム内での洗濯物の挙動を計測・推定している。この結果を用いてドラムの回転速度を変化させることにより、脱水時のアンバランスを制御したり、洗い時の洗濯物の移動量を制御したりなどして、洗濯状況を適切に改善している。 Conventionally, in such a drum type washing machine, the drum behavior during washing operation, such as unbalance detection control during dehydration and laundry movement amount detection control during washing, and the laundry behavior in the drum are measured.・ Estimated. By using this result to change the rotation speed of the drum, the laundry situation is appropriately improved by controlling the imbalance during dehydration and controlling the amount of movement of the laundry during washing. .
　例えば、特許文献１では、ドラムの受け筒に半導体加速度センサを取り付け、図６に示すように、加速度センサ出力の変化量６１と、モータのトルク電流成分の変化量６２とから、洗濯衣類（洗濯物）の挙動を推定する。推定した洗濯衣類の挙動に応じて、制御部６３によってドラムを回転させるモータの回転数を変化させている。 For example, in Patent Document 1, a semiconductor acceleration sensor is attached to a drum receiving cylinder, and, as shown in FIG. 6, a laundry garment (laundry) is obtained from a change amount 61 of an acceleration sensor output and a change amount 62 of a torque current component of a motor. The behavior of the object). The controller 63 changes the number of rotations of the motor that rotates the drum according to the estimated behavior of the laundry.
　しかしながら、このような従来の洗濯機の構成では、洗濯衣類の挙動を把握し、洗浄特性に優れた洗濯を実施するためにドラムの回転数を適切に制御することが困難である。すなわち、受け筒に加わる振動には、様々なものがあり、単純な加速度センサの出力値の変化量では、衣類の挙動を正確に把握することが困難である。例えば、衣類の挙動以外に、モータ自体に起因する振動や筺体の振動が受け筒に加わる場合も想定される。さらには、衣類の量、重さ、質によっても受け筒の振動は異なり、単純な加速度センサの出力値の大きさの変化では洗濯衣類の挙動を精度良く把握することは困難である。 However, in the configuration of such a conventional washing machine, it is difficult to grasp the behavior of the laundry and appropriately control the number of revolutions of the drum in order to carry out washing with excellent washing characteristics. That is, there are various types of vibration applied to the receiving cylinder, and it is difficult to accurately grasp the behavior of clothing with a simple change amount of the output value of the acceleration sensor. For example, in addition to the behavior of clothing, it is also assumed that vibration due to the motor itself or vibration of the housing is applied to the receiving tube. Furthermore, the vibration of the receiving tube varies depending on the quantity, weight, and quality of the clothing, and it is difficult to accurately grasp the behavior of the laundry by simply changing the output value of the acceleration sensor.
　また、モータのトルク成分を示す電流値で洗濯衣類の挙動を把握することも同様である。例えば、洗濯時に水量が多く、衣類が化繊など軽量の場合には、ドラム内に設けられたバッフルによる衣類の掻き上げ移動量とモータトルクとの間には相関が観られない場合も存在している。そのため、モータのトルク電流成分から洗濯衣類の挙動を正確に推定することが困難な場合が生じる。 It is also the same as grasping the behavior of the laundry by the current value indicating the torque component of the motor. For example, when there is a large amount of water during washing and the clothing is lightweight, such as synthetic fiber, there is a case where no correlation is observed between the amount of movement of the clothing by the baffle provided in the drum and the motor torque. Yes. Therefore, it may be difficult to accurately estimate the behavior of the laundry from the torque current component of the motor.
特開２００６－３４６２７０号公報JP 2006-346270 A
　本発明は、精度よく洗濯状況を把握して洗濯に最適な回転速度でドラムを回転させることにより、洗浄性能の優れた洗濯機を提供するものである。 The present invention provides a washing machine with excellent washing performance by accurately grasping the washing situation and rotating the drum at a rotation speed optimum for washing.
　本発明は、洗濯物を収容して回転するドラムと、ドラムを収容する受け筒と、受け筒を筺体上方から吊り下げる弾性吊り下げ部と、受け筒を筺体下方から支持する防振ダンパと、ドラムを回転させるモータとを備えている。さらに、本発明は、受け筒の振動を検出する振動検出部と、振動検出部で検出した振動に対して周波数成分を計算する周波数成分計算部と、周波数成分計算部で計算された周波数成分の大きさにしたがってモータの回転速度を変化させる回転速度制御部とを備えている。さらに、弾性吊り下げ部は、ドラムの回転軸線に対して対称の位置から受け筒を吊り下げ、振動検出部は、受け筒の前後方向の振動を検出する。さらに、回転速度制御部は、前後方向の振動に対して計算された周波数成分の大きさにしたがってモータの回転速度を変化させる。 The present invention includes a drum that accommodates and rotates laundry, a receiving cylinder that accommodates the drum, an elastic suspension that suspends the receiving cylinder from above the housing, and a vibration damper that supports the receiving tube from below the housing, And a motor for rotating the drum. Further, the present invention provides a vibration detection unit that detects vibration of the receiving cylinder, a frequency component calculation unit that calculates a frequency component for the vibration detected by the vibration detection unit, and a frequency component calculated by the frequency component calculation unit. And a rotation speed control unit that changes the rotation speed of the motor according to the size. Furthermore, the elastic suspension part suspends the receiving tube from a position symmetrical with respect to the rotation axis of the drum, and the vibration detection unit detects vibration in the front-rear direction of the receiving tube. Further, the rotation speed control unit changes the rotation speed of the motor according to the magnitude of the frequency component calculated for the vibration in the front-rear direction.
　また、本発明は、洗濯物を収容して回転するドラムと、ドラムを収容する受け筒と、受け筒を筺体上方から吊り下げる弾性吊り下げ部と、受け筒を筺体下方から支持する防振ダンパと、ドラムを回転させるモータとを備えている。さらに、本発明は、受け筒の振動を検出する振動検出部と、振動検出部で検出した振動に対して周波数成分を計算する周波数成分計算部と、周波数成分計算部で計算された周波数成分の大きさにしたがってモータの回転速度を変化させる回転速度制御部とを備えている。さらに、弾性吊り下げ部は、ドラムの回転軸線上の位置から受け筒を吊り下げ、振動検出部は、受け筒の左右方向の振動を検出する。さらに、回転速度制御部は、左右方向の振動に対して計算された前記周波数成分の大きさにしたがってモータの回転速度を変化させる。 The present invention also provides a drum that accommodates and rotates laundry, a receiving cylinder that accommodates the drum, an elastic suspension that suspends the receiving cylinder from above the housing, and a vibration damping damper that supports the receiving tube from below the housing. And a motor for rotating the drum. Further, the present invention provides a vibration detection unit that detects vibration of the receiving cylinder, a frequency component calculation unit that calculates a frequency component for the vibration detected by the vibration detection unit, and a frequency component calculated by the frequency component calculation unit. And a rotation speed control unit that changes the rotation speed of the motor according to the size. Further, the elastic suspension unit suspends the receiving tube from a position on the rotation axis of the drum, and the vibration detection unit detects vibration in the left-right direction of the receiving tube. Further, the rotation speed control unit changes the rotation speed of the motor according to the magnitude of the frequency component calculated for the vibration in the left-right direction.
　かかる構成によれば、受け筒の筐体に対する支持位置の違いによって、洗濯物の動きによる受け筒の振動に由来する振動成分の方向を決める。すなわち、周波数成分計算部での計算値算出に用いる振動成分の方向を決める。これにより、ドラム内での洗濯物の移動を精度良く把握し、衣類の洗濯に適したドラム回転制御を行い、洗浄性能を向上させることができる。 According to this configuration, the direction of the vibration component derived from the vibration of the receiving tube due to the movement of the laundry is determined by the difference in the support position of the receiving tube with respect to the housing. That is, the direction of the vibration component used for calculation value calculation in the frequency component calculation unit is determined. Accordingly, it is possible to accurately grasp the movement of the laundry in the drum, perform drum rotation control suitable for washing clothes, and improve the cleaning performance.
図１は、本発明の実施の形態１における洗濯機の側面概略構成図である。FIG. 1 is a schematic side view of a washing machine according to Embodiment 1 of the present invention. 図２は、本発明の実施の形態１における洗濯機の支持構造を示す上面概略図である。FIG. 2 is a schematic top view showing the washing machine support structure according to Embodiment 1 of the present invention. 図３Ａは、本発明の実施の形態１における洗濯機の受け筒の振動から求めた前後方向成分解析結果を示すグラフである。FIG. 3A is a graph showing the longitudinal component analysis results obtained from the vibration of the receiving cylinder of the washing machine in the first embodiment of the present invention. 図３Ｂは、本発明の実施の形態１における洗濯機の受け筒の振動から求めた左右方向成分解析結果を示すグラフである。FIG. 3B is a graph showing a left-right direction component analysis result obtained from vibration of a receiving cylinder of the washing machine in the first embodiment of the present invention. 図３Ｃは、本発明の実施の形態１における洗濯機の受け筒の振動から求めた上下方向成分解析結果を示すグラフである。FIG. 3C is a graph showing the vertical component analysis result obtained from the vibration of the receiving cylinder of the washing machine in the first embodiment of the present invention. 図４は、本発明の実施の形態１における洗濯機のドラム内部における洗濯状態の説明図である。FIG. 4 is an explanatory diagram of a washing state inside the drum of the washing machine according to the first embodiment of the present invention. 図５は、本発明の実施の形態２における洗濯機の支持構造を示す上面概略図である。FIG. 5 is a schematic top view showing the washing machine support structure according to Embodiment 2 of the present invention. 図６は、従来の洗濯機におけるモータ回転数の制御を説明する図である。FIG. 6 is a diagram for explaining the control of the motor rotation speed in a conventional washing machine.
　以下本発明の実施の形態について、図面を参照しながら説明するが、本発明はこれらに限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.
　（実施の形態１）
　本発明の実施の形態１を図１に基づいて説明する。図１は、本実施の形態１における洗濯機の側面概略構成図である。 (Embodiment 1)
A first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic side view of the washing machine according to the first embodiment.
　図１に示されるように、本実施の形態の洗濯機は、回転自在のドラム１を内包する受け筒２が弾性吊り下げ部３と防振ダンパ４によって筐体５に支持されている。受け筒２の底部にはモータ６が固定されており、ベルト７を介してドラム１を所定の回転数で回転させる。 As shown in FIG. 1, in the washing machine according to the present embodiment, a receiving cylinder 2 containing a rotatable drum 1 is supported by a housing 5 by an elastic hanging portion 3 and a vibration damping damper 4. A motor 6 is fixed to the bottom of the receiving tube 2, and the drum 1 is rotated at a predetermined rotational speed via a belt 7.
　洗濯機の正面に設けられた衣類投入・取り出し口８よりドラム１内に投入された洗濯物としての洗濯衣類９は、ドラム１の回転とともに、ドラム１内に設けられたバッフル１０にてすくい持ち上げられ、上部より底部に向かって落下する。この底部に叩きつけられる際の運動エネルギーによって洗浄効果が高められている。洗濯衣類９の動きによって発生する受け筒２の振動を振動検出部１１によって検出し、検出結果を周波数成分計算部１２に伝達する。さらに、周波数成分計算部１２で計算された値が回転速度制御部１３へ伝達され、モータ６は、回転速度制御部１３により、適切な叩き洗いが実現する回転数へと修正制御される。 The laundry garment 9 as the laundry put into the drum 1 through the garment loading / unloading port 8 provided in the front of the washing machine is scooped up by the baffle 10 provided in the drum 1 as the drum 1 rotates. And falls from the top to the bottom. The cleaning effect is enhanced by the kinetic energy when struck against the bottom. The vibration of the receiving tube 2 generated by the movement of the laundry 9 is detected by the vibration detection unit 11 and the detection result is transmitted to the frequency component calculation unit 12. Further, the value calculated by the frequency component calculation unit 12 is transmitted to the rotation speed control unit 13, and the motor 6 is corrected and controlled by the rotation speed control unit 13 to a rotation speed at which appropriate tapping is realized.
　ここで、防振ダンパ４の支持位置はドラム１と受け筒２を合わせた状態での重心点より略鉛直線上または鉛直線上に取り付けられることが望ましい。これは、洗濯衣類９がドラム１の上部より落下する際に底部での振動が大きく、かつ連続して衝撃を受けるため、受け筒２の底部を安定化させることにより、振動検出部１１で検出する信号に、洗濯衣類９の動き以外の揺れを含めないようにするためである。なお、本実施の形態の振動検出部１１は加速度センサから構成されており、加速度センサとしては半導体加速度センサ、圧電型加速度センサなどのいずれであっても構わない。 Here, it is desirable that the support position of the vibration isolating damper 4 is attached on the substantially vertical line or on the vertical line from the center of gravity when the drum 1 and the receiving cylinder 2 are combined. This is detected by the vibration detection unit 11 by stabilizing the bottom of the receiving tube 2 because the vibration at the bottom is large and the shock is continuously received when the laundry 9 falls from the top of the drum 1. This is so as not to include shaking other than the movement of the laundry 9 in the signal to be performed. Note that the vibration detection unit 11 of the present embodiment includes an acceleration sensor, and the acceleration sensor may be any of a semiconductor acceleration sensor, a piezoelectric acceleration sensor, and the like.
　図２は、本実施の形態における支持構造を示す上面概略図の一例を表している。図２において、重心点１４は、ドラム１と受け筒２を合わせた状態での重心を示す。受け筒２は２箇所の支持点１５において弾性吊り下げ部３によって支持されている。中心軸１６は、ドラム１の回転軸を示している。 FIG. 2 shows an example of a schematic top view showing the support structure in the present embodiment. In FIG. 2, the center of gravity point 14 indicates the center of gravity in a state where the drum 1 and the receiving tube 2 are combined. The receiving tube 2 is supported by the elastic suspension 3 at two support points 15. The center axis 16 indicates the rotation axis of the drum 1.
　すなわち、本実施の形態では、弾性吊り下げ部３は、ドラム１の中心軸１６線に対して対称の位置から受け筒２を吊り下げている。より詳細には、弾性吊り下げ部３は、ドラム１と受け筒２を合わせた状態での重心点１４を含む平面上の位置であって、ドラム１の中心軸１６線を含み鉛直方向に延びる平面に対して対称の位置から受け筒２を吊り下げている。 That is, in the present embodiment, the elastic suspension part 3 suspends the receiving tube 2 from a position symmetrical with respect to the central axis 16 line of the drum 1. More specifically, the elastic suspension portion 3 is a position on a plane including the center of gravity 14 in a state where the drum 1 and the receiving cylinder 2 are combined, and includes the center axis 16 of the drum 1 and extends in the vertical direction. The receiving tube 2 is suspended from a position symmetrical with respect to the plane.
　本実施の形態のように、受け筒２と筐体５の上部とをつなぐ弾性吊り下げ部３が、中心軸１６上の重心点１４を中心に略対称位置または対称位置に支持されている場合には、均衡の取れた吊り下げ状態となっている。そのため、ドラム１内部の洗濯衣類９の動きに応じて周期的な振動が発生する。この振動を振動検出部１１によって検出し、図１に示す周波数成分計算部１２にその結果を伝達する。ここで振動検出部１１は、受け筒２の上下、左右、前後の少なくとも一つの振動成分を検出し、検出した方向の加速度は、信号値として周波数成分計算部１２に送られ、その後回転速度制御部１３への出力として利用される。 When the elastic suspension part 3 which connects the receiving cylinder 2 and the upper part of the housing | casing 5 is supported by the substantially symmetrical position or the symmetrical position centering on the gravity center point 14 on the center axis | shaft 16 like this Embodiment There is a balanced suspended state. Therefore, periodic vibration is generated according to the movement of the laundry clothes 9 inside the drum 1. This vibration is detected by the vibration detector 11, and the result is transmitted to the frequency component calculator 12 shown in FIG. Here, the vibration detection unit 11 detects at least one vibration component of the upper, lower, left, and right of the receiving cylinder 2, and the detected acceleration in the direction is sent to the frequency component calculation unit 12 as a signal value, and then the rotational speed control is performed. Used as output to the unit 13.
　周波数成分計算部１２では、送られてきた加速度値から離散フーリエ変換（ＤＦＴ）もしくは高速フーリエ変換（ＦＦＴ）を行って、周波数成分の大きさ（フーリエ振幅スペクトラム、パワースペクトラム）を計算する。回転速度制御部１３では、周波数成分計算部１２で計算された特定の周波数成分の大きさや周波数成分の和の大きさによって、ドラムの回転数を増減させ、洗濯物の洗浄性能の向上が可能となる。 The frequency component calculation unit 12 performs discrete Fourier transform (DFT) or fast Fourier transform (FFT) from the received acceleration value to calculate the magnitude of the frequency component (Fourier amplitude spectrum, power spectrum). The rotation speed control unit 13 can increase or decrease the number of rotations of the drum according to the size of the specific frequency component calculated by the frequency component calculation unit 12 or the sum of the frequency components, thereby improving the washing performance of the laundry. Become.
　ここで、図２に示すような支持構造の場合には、洗濯衣類９の動きが、洗濯時の汚れ落としに効果のある叩き洗い状態に置かれた際に発生する特定の周期を持った受け筒２からの振動は、左右方向では弾性吊り下げ部３によって緩和され、上下方向は防振ダンパ４によって緩和されてしまう。そのために、その正確な周波数成分を把握することができなくなってしまう。したがって、この場合には、前後方向の振動が、ドラム１内部で動いている洗濯衣類９の動きが最も緩和されることなく反映する。したがって、本実施の形態では、振動検出部１１の加速度センサは、前後方向のみ検出できるものを取り付ければ十分であるが、３軸（前後、左右、上下）方向の振動が検出可能でそのうちの前後方向の振動のみ採用する構成としてもよい。 Here, in the case of the support structure as shown in FIG. 2, the movement of the laundry garment 9 is received with a specific cycle that occurs when the laundry 9 is placed in a tapping state that is effective for removing dirt during washing. The vibration from the cylinder 2 is alleviated by the elastic suspension portion 3 in the left-right direction, and is alleviated by the vibration-proof damper 4 in the up-down direction. Therefore, it becomes impossible to grasp the exact frequency component. Accordingly, in this case, the vibration in the front-rear direction reflects the movement of the laundry garment 9 moving inside the drum 1 with the least relaxation. Therefore, in the present embodiment, it is sufficient to attach an acceleration sensor of the vibration detection unit 11 that can detect only in the front-rear direction, but vibration in three axes (front-rear, left-right, up-down) can be detected, and the front and rear A configuration may be adopted in which only vibration in the direction is employed.
　図３Ａ～図３Ｃでは、図２に示す本実施の形態ように、受け筒２と筐体５上部とをつなぐ弾性吊り下げ部３が、中心軸１６上の重心点１４を中心に対称位置に支持されている状態で、受け筒２からの振動を各方向成分に分解したときの解析結果を示している。図３Ａ～図３Ｃでは、ドラム１の回転数を４５ｒｐｍ、洗濯衣類９の重量を２．０ｋｇにて洗浄評価をした。図３Ａは、受け筒２の振動から求めた前後方向成分の解析結果を示すグラフ、図３Ｂは、同左右方向成分の解析結果を示すグラフ、図３Ｃは、同上下方向の解析成分の解析結果を示すグラフである。 3A to 3C, as in the present embodiment shown in FIG. 2, the elastic suspension portion 3 that connects the receiving tube 2 and the upper portion of the housing 5 is in a symmetrical position with the center of gravity 14 on the central axis 16 as the center. The analysis result when the vibration from the receiving cylinder 2 is decomposed into each direction component in the supported state is shown. In FIG. 3A to FIG. 3C, cleaning evaluation was performed with the drum 1 rotating at 45 rpm and the weight of the laundry garment 9 being 2.0 kg. 3A is a graph showing the analysis result of the longitudinal component obtained from the vibration of the receiving cylinder 2, FIG. 3B is a graph showing the analysis result of the horizontal component, and FIG. 3C is the analysis result of the analytic component in the vertical direction. It is a graph which shows.
　また、洗浄性能を向上させるよう回転数を制御するための指標とする周波数ピークについて図４を用いて説明をする。図４の円はドラム１の開口部を表し、底面を０°、上部を１８０°として表している。９０°及び２７０°についてはドラムの回転が反転するために、左右反転しても問題はない。今、洗浄性能を向上させるためには洗濯衣類９をバッフル１０（図１参照）にて持ち上げ、上部から落下させる叩き洗い（軌跡ｂ）が最適である。洗濯衣類９がドラム１に張り付いて動く場合（軌跡ｃ）や、洗濯衣類９がドラム１の底部にてゴロゴロと回転している場合（軌跡ａ）は、洗浄性能を向上させるには不適である。 Further, the frequency peak as an index for controlling the rotation speed so as to improve the cleaning performance will be described with reference to FIG. The circle in FIG. 4 represents the opening of the drum 1, and the bottom surface is represented as 0 ° and the upper portion is represented as 180 °. Since rotation of the drum is reversed at 90 ° and 270 °, there is no problem even if reversed left and right. Now, in order to improve the cleaning performance, it is most suitable to tap the washing garment 9 with the baffle 10 (see FIG. 1) and drop it from the top (trajectory b). When the laundry clothes 9 sticks to the drum 1 and moves (trajectory c), or when the laundry clothes 9 rotate around the bottom of the drum 1 (trajectory a), it is unsuitable for improving the cleaning performance. is there.
　図４中、９０°から１８０°までの間で落下して下部のドラム１面に衝突することが、洗浄性能を向上させるには最適となる。そのために、本実施の形態では、ドラム１の回転数とは異なる回転数に対応する周波数成分を検出し、その大きさに応じてドラム１の回転数を制御する。具体的には、本実施の形態の洗濯機においては、ドラム１の回転数にバッフル１０の数に１を加算した数を掛け合わせた回転数と、ドラム１の回転数にバッフル１０の数から１を減算した数を掛け合わせた回転数との範囲内における回転数の周波数成分の大きな変化を検出する。本実施の形態では、ドラム１の回転数を４５ｒｐｍとしており、バッフル１０が３つ設けられている。したがって、周波数が４５×２／６０＝１．５Ｈｚから４５×４／６０＝３．０Ｈｚの間に現れる振幅成分（振幅スペクトラム）が主として回転数の制御に必要な計算値となる。 In FIG. 4, it is optimal to improve the cleaning performance by dropping between 90 ° and 180 ° and colliding with the lower drum 1 surface. Therefore, in the present embodiment, a frequency component corresponding to a rotational speed different from the rotational speed of the drum 1 is detected, and the rotational speed of the drum 1 is controlled in accordance with the magnitude. Specifically, in the washing machine of the present embodiment, the rotation number obtained by multiplying the rotation number of the drum 1 by the number obtained by adding 1 to the number of the baffles 10, and the rotation number of the drum 1 from the number of the baffles 10. A large change in the frequency component of the rotational speed within the range of the rotational speed multiplied by the number obtained by subtracting 1 is detected. In the present embodiment, the number of rotations of the drum 1 is 45 rpm, and three baffles 10 are provided. Therefore, the amplitude component (amplitude spectrum) that appears when the frequency is between 45 × 2/60 = 1.5 Hz and 45 × 4/60 = 3.0 Hz is mainly a calculated value necessary for controlling the rotational speed.
　図３Ａ～図３Ｃの結果からも明らかなように、前後方向（図３Ａ）以外の左右方向（図３Ｂ）、上下方向（図３Ｃ）の結果では、全体として上記周波数範囲（１．５Ｈｚ～３．０Ｈｚ）以外の領域にも多くのピークが観測される。すなわち、左右方向、上下方向の周波数解析の結果からでは、洗濯衣類９の特徴的な動きに起因する周波数成分の変化が多数のピークの間に紛れてしまって観測できない。したがって、これらのような周波数のパターンからは衣類の状態を把握し、その結果を基にしたドラム１の回転速度を制御することが困難である。しかし、前後方向の周波数解析の結果によれば、周波数成分の大きな変化が観測できる。したがって、この結果を基にしてドラム１の回転速度を容易に制御できる。 As is apparent from the results of FIGS. 3A to 3C, in the results in the horizontal direction (FIG. 3B) and the vertical direction (FIG. 3C) other than the front-rear direction (FIG. 3A), the above frequency range (1.5 Hz to 3 Hz) as a whole. Many peaks are also observed in regions other than .0 Hz). That is, from the result of the frequency analysis in the left-right direction and the up-down direction, the change in the frequency component due to the characteristic movement of the laundry 9 is mixed between many peaks and cannot be observed. Therefore, it is difficult to grasp the state of clothing from these frequency patterns and control the rotational speed of the drum 1 based on the result. However, according to the result of frequency analysis in the front-rear direction, a large change in the frequency component can be observed. Therefore, the rotation speed of the drum 1 can be easily controlled based on this result.
　上記の説明で示したように、図３Ａ～図３Ｃに示された洗濯衣類９が２．０ｋｇ、ドラム回転数が４５ｒｐｍの洗濯条件において、衣類の叩き洗いができている条件は周波数が１．５Ｈｚ～３．０Ｈｚである。１．５Ｈｚ未満では洗濯衣類９が底部でゴロゴロと回転する状態、３．０Ｈｚより大きい周波数では洗濯衣類９がドラム１に張り付いている状態となっている。 As shown in the above description, in the washing condition where the laundry garment 9 shown in FIGS. 3A to 3C is 2.0 kg and the drum rotation speed is 45 rpm, the condition that the garment can be washed is a frequency of 1. 5 Hz to 3.0 Hz. If the frequency is less than 1.5 Hz, the laundry garment 9 rotates at the bottom and the laundry garment 9 is attached to the drum 1 at a frequency higher than 3.0 Hz.
　ここで、振動方向の成分毎に、各周波数領域における特定周波数間隔（例えば０．１５Ｈｚ）毎のピーク値の総計を、全周波数領域での特定周波数間隔（例えば同じく０．１５Ｈｚ）毎のピーク値の総計に対する比率として算出した。その結果、振動方向が前後方向では、叩き洗いの状態が４８％、ゴロゴロ状態が１６％、張り付き状態が３６％であった。振動方向が左右方向では、叩き洗いの状態が３５％、ゴロゴロ状態が３３％、張り付き状態が３２％であった。振動方向が上下方向では、叩き洗いの状態が３６％、ゴロゴロ状態が３９％、張り付き状態が２５％であった。 Here, for each component in the vibration direction, the sum of the peak values for each specific frequency interval (for example, 0.15 Hz) in each frequency region is the peak value for each specific frequency interval (for example, 0.15 Hz) in all frequency regions. As a percentage of the total. As a result, when the vibration direction was the front-rear direction, the state of washing was 48%, the grooving state was 16%, and the sticking state was 36%. When the vibration direction was the left-right direction, the state of washing was 35%, the grooving state was 33%, and the sticking state was 32%. When the vibration direction was the vertical direction, the washing state was 36%, the grooving state was 39%, and the sticking state was 25%.
　この結果からも、前後方向の振動成分が最も叩き洗いの状態の信号を大きく反映し、他の領域での信号と明瞭に区別できると判断できる。したがって、さらに、経時的にその値が変動した場合でも、前後方向の振動成分がドラム内における衣類の動きの変動として対応していると判断できる。 From this result, it can be judged that the vibration component in the front-rear direction largely reflects the signal of the washing state and can be clearly distinguished from signals in other areas. Therefore, even when the value fluctuates with time, it can be determined that the vibration component in the front-rear direction corresponds to the movement of the clothes in the drum.
　本実施の形態のドラム１の回転速度の制御においては、上記のように叩き洗いに起因する周波数成分の振幅スペクトルが大きくなるように制御がなされる。叩き洗いに起因する周波数成分領域（例えばドラム回転数が４５ｒｐｍの場合には１．５Ｈｚ～３．０Ｈｚ）よりも長い周波数（すなわち３．０Ｈｚより大きな周波数領域）の成分が多い場合には、ドラムの回転速度が速く、洗濯衣類９がドラム１上部で落下することなく、ドラム１壁面に張り付いて回転していると考えられる。したがって、ドラム１に与える振動の頻度が少なくなっているものと予測される。そのため、ドラム１の回転速度を遅くして洗濯衣類９をドラム１壁面より落とすように制御する。 In the control of the rotational speed of the drum 1 of the present embodiment, the control is performed so that the amplitude spectrum of the frequency component resulting from the washing is increased as described above. If there are many components with a frequency longer than the frequency component region (for example, 1.5 Hz to 3.0 Hz when the drum rotational speed is 45 rpm) due to the washing with a beat, the drum It is considered that the laundry garment 9 is attached to the wall surface of the drum 1 and is rotating without falling at the upper part of the drum 1. Therefore, it is predicted that the frequency of vibration applied to the drum 1 is reduced. Therefore, control is performed such that the laundry 1 is dropped from the wall surface of the drum 1 by reducing the rotation speed of the drum 1.
　逆に、叩き洗いに起因する周波数成分領域よりも短い周波数（すなわち１．５Ｈｚより小さな周波数領域）の成分が多い場合には、ドラム１の回転速度が遅く、濡れた状態の洗濯衣類９の重さに抗してバッフル１０で十分に持ち上げることができなくなり、洗濯衣類９はドラム１の底部でドラム１の回転にあわせてゴロゴロと回転しながら動いていると考えられる。したがって、短時間の間に何度もドラム１に振動を与えていると予測される。そのため、ドラム１の回転速度を早めて洗濯衣類９がドラム１の動きと共にバッフル１０で十分持ち上げられるように制御する。 On the other hand, when there are many components with a frequency shorter than the frequency component region resulting from tapping (that is, a frequency region smaller than 1.5 Hz), the rotational speed of the drum 1 is slow and the weight of the wet laundry 9 is heavy. The baffle 10 cannot be lifted sufficiently against this, and the laundry garment 9 is considered to move while rotating around the bottom of the drum 1 as the drum 1 rotates. Therefore, it is predicted that the drum 1 is vibrated many times in a short time. Therefore, the rotational speed of the drum 1 is increased so that the laundry 9 is sufficiently lifted by the baffle 10 as the drum 1 moves.
　このようにドラム１の回転速度を制御することで、高い位置より洗濯衣類９を落下させ、洗浄性能が高まる叩き洗いを実現することが可能となる。 By controlling the rotational speed of the drum 1 in this way, it is possible to drop the laundry garment 9 from a high position and realize tapping that enhances the cleaning performance.
　以上説明したように、本実施の形態は、洗濯物を収容して回転するドラム１と、ドラム１を収容する受け筒２と、受け筒２を筺体５上方から吊り下げる弾性吊り下げ部３と、受け筒２を筺体５下方から支持する防振ダンパ４と、ドラム１を回転させるモータ６と、受け筒２の振動を検出する振動検出部１１と、振動検出部１１で検出した振動に対して周波数成分を計算する周波数成分計算部１２と、周波数成分計算部１２で計算された周波数成分の大きさにしたがってモータ６の回転速度を変化させる回転速度制御部１３とを備え、弾性吊り下げ部３は、ドラム１の回転軸１６線に対して対称の位置から受け筒２を吊り下げ、振動検出部１１は、受け筒２の前後方向の振動を検出し、回転速度制御部１３は、前後方向の振動に対して計算された周波数成分の大きさにしたがってモータ６の回転速度を変化させる構成を有する。 As described above, the present embodiment includes a drum 1 that accommodates and rotates laundry, a receiving cylinder 2 that accommodates the drum 1, and an elastic suspension portion 3 that suspends the receiving cylinder 2 from above the housing 5. The vibration isolating damper 4 that supports the receiving tube 2 from below the housing 5, the motor 6 that rotates the drum 1, the vibration detecting unit 11 that detects the vibration of the receiving tube 2, and the vibration detected by the vibration detecting unit 11 A frequency component calculation unit 12 that calculates the frequency component, and a rotation speed control unit 13 that changes the rotation speed of the motor 6 according to the magnitude of the frequency component calculated by the frequency component calculation unit 12, and an elastic suspension unit 3 suspends the receiving tube 2 from a position symmetrical with respect to the rotation axis 16 of the drum 1, the vibration detecting unit 11 detects vibration in the front-rear direction of the receiving tube 2, and the rotational speed control unit 13 Calculated for vibration in direction Having the configuration of changing the rotational speed of the motor 6 according to the magnitude of the frequency component.
　かかる構成によれば、ドラム１の回転と共に衣類が回転し、衣類が持ち上げられて上方から落下する際に下部のドラムに衝突して振動が発生する。弾性吊り下げ部３が受け筒２の回転軸１６線に対して対称の位置から受け筒２を吊り下げている。そのため、受け筒の左右方向に対する動きは弾性吊り下げ部３の弾性力によって緩和され、衣類の動きとは関係のない振動となる。また、受け筒２の上下方向に対する動きも同様に、防振ダンパ４の弾性力や減衰力によって緩和される。しかし、受け筒２の前後方向の振動は、弾性吊り下げ部３や防振ダンパ４によって緩衝されることなく、十分検出することができる。 According to such a configuration, the clothes rotate with the rotation of the drum 1, and when the clothes are lifted and dropped from above, they collide with the lower drum and generate vibration. The elastic suspension part 3 suspends the receiving tube 2 from a position symmetrical with respect to the rotation axis 16 line of the receiving tube 2. For this reason, the movement of the receiving tube in the left-right direction is alleviated by the elastic force of the elastic suspension part 3, resulting in vibration unrelated to the movement of the clothing. Similarly, the movement of the receiving cylinder 2 in the vertical direction is also mitigated by the elastic force and damping force of the vibration damping damper 4. However, the vibration in the front-rear direction of the receiving tube 2 can be sufficiently detected without being buffered by the elastic suspension part 3 or the vibration damping damper 4.
　これによってドラム１内での衣類の動きと連動した受け筒２の振動を精度よく把握することが可能となる。したがって、洗濯時に最適な叩き洗いが不十分な状態や、衣類がドラムに張り付いている状態で回転している場合に回転数を制御して、洗濯時に最適な叩き洗いの状態を維持し、洗浄性能に優れた洗濯機を得ることができる。 This makes it possible to accurately grasp the vibration of the receiving cylinder 2 that is linked to the movement of clothing in the drum 1. Therefore, the optimal number of washing when washing is insufficient or when the clothes are rotating while the clothes are stuck to the drum, the number of rotations is controlled to maintain the optimum washing state when washing. A washing machine with excellent cleaning performance can be obtained.
　（実施の形態２）
　次に本発明の実施の形態２について説明する。図５は本発明の実施の形態２における支持構造を示す上面概略図を示している。実施の形態１と同様の構成については同じ符号を用い、説明は省略する。 (Embodiment 2)
Next, a second embodiment of the present invention will be described. FIG. 5 is a schematic top view showing a support structure according to Embodiment 2 of the present invention. The same reference numerals are used for the same components as in the first embodiment, and description thereof is omitted.
　本実施の形態では、実施の形態１と異なり、図５に示すように、受け筒２と筐体５の上部とをつなぐ弾性吊り下げ部３が、重心点１４を含む、略中心軸１６上または中心軸１６上の支持点１５で支持されている。この場合には、受け筒２の下部を支持する防振ダンパ４と合わせて均衡の取れた吊り下げ状態となっている。そのため、ドラム１の内部の洗濯衣類９の動きに応じて周期的な振動が発生する。その他の洗濯機の構成については実施の形態１と同様である。 In the present embodiment, unlike the first embodiment, as shown in FIG. 5, the elastic suspension part 3 that connects the receiving tube 2 and the upper part of the housing 5 includes a center of gravity point 14 on a substantially central axis 16. Alternatively, it is supported at a support point 15 on the central axis 16. In this case, the suspension is balanced with the vibration damping damper 4 that supports the lower portion of the receiving tube 2. Therefore, periodic vibration is generated according to the movement of the laundry clothes 9 inside the drum 1. Other configurations of the washing machine are the same as those in the first embodiment.
　この振動を振動検出部１１によって検出し、図１における周波数成分計算部１２にその結果を伝達する。ここで振動検出部１１は、受け筒２の上下、左右、前後の少なくとも一つの振動成分を検出し、検出した方向の加速度は、信号値として周波数成分計算部１２に送られ、その後回転速度制御部１３への出力として利用される。周波数成分計算部１２では送られてきた加速度値から離散フーリエ変換（ＤＦＴ）もしくは高速フーリエ変換（ＦＦＴ）を行って、周波数成分の大きさ（フーリエ振幅スペクトラム、パワースペクトラム）を計算する。回転速度制御部１３では計算された特定の周波数成分の大きさや周波数成分の和の大きさによってドラムの回転数を増減させ洗濯衣類９の洗浄性能の向上が可能となる。 This vibration is detected by the vibration detector 11 and the result is transmitted to the frequency component calculator 12 in FIG. Here, the vibration detection unit 11 detects at least one vibration component of the upper, lower, left, and right of the receiving cylinder 2, and the detected acceleration in the direction is sent to the frequency component calculation unit 12 as a signal value, and then the rotational speed control is performed. Used as output to the unit 13. The frequency component calculator 12 performs discrete Fourier transform (DFT) or fast Fourier transform (FFT) from the received acceleration value to calculate the magnitude of the frequency component (Fourier amplitude spectrum, power spectrum). The rotational speed control unit 13 can improve the cleaning performance of the laundry garment 9 by increasing or decreasing the number of rotations of the drum according to the calculated magnitude of the specific frequency component and the sum of the frequency components.
　本実施の形態では、弾性吊り下げ部３は、図５に示すように、ドラム１の回転軸１６線上の位置から受け筒２を吊り下げている。より詳細には、弾性吊り下げ部３は、ドラム１の回転軸１６線を含み鉛直方向に延びる平面の位置から受け筒２を吊り下げている。ここで、弾性吊り下げ部３の支持箇所数は、図５に示すように１ヶ所であっても、上記平面の位置にある前後方向の２ヶ所であってもよく、支持位置の数は特に限定されるものではない。 In this embodiment, the elastic suspension part 3 suspends the receiving tube 2 from a position on the rotation axis 16 line of the drum 1 as shown in FIG. More specifically, the elastic suspension part 3 suspends the receiving tube 2 from the position of a plane including the rotation axis 16 line of the drum 1 and extending in the vertical direction. Here, the number of supporting portions of the elastic suspension part 3 may be one as shown in FIG. 5 or may be two in the front-rear direction at the position of the plane. It is not limited.
　ここで、図５に示すような本実施の形態の支持構造の場合には、洗濯衣類９の動きが、汚れ落としに効果のある叩き状態に置かれた際に発生する特定の周期を持った受け筒２からの振動は、前後方向では弾性吊り下げ部３によって緩和され、上下方向は防振ダンパ４によって緩和される。そのため、この場合には、左右方向の振動がドラム１の内部で動いている洗濯衣類９の動きを緩和されることなく反映する。したがって、本実施の形態では、振動検出部１１の加速度センサは、左右方向のみ検出できるものを取り付ければ十分であるが、３軸（前後、左右、上下）方向の振動が検出可能でそのうちの左右方向の振動のみ採用する構造としてもよい。 Here, in the case of the support structure of the present embodiment as shown in FIG. 5, the movement of the laundry garment 9 has a specific cycle that occurs when placed in a tapping state that is effective in removing dirt. The vibration from the receiving cylinder 2 is relieved by the elastic suspension part 3 in the front-rear direction, and is relieved by the vibration-proof damper 4 in the up-down direction. Therefore, in this case, the vibration in the left-right direction reflects the movement of the laundry 9 that is moving inside the drum 1 without being relaxed. Therefore, in the present embodiment, it is sufficient to attach an acceleration sensor of the vibration detection unit 11 that can detect only in the left-right direction. However, vibrations in three axes (front-rear, left-right, up-down) can be detected, and left and right of them can be detected. A structure that employs only vibration in the direction may be employed.
　また、洗濯時に洗濯衣類９がドラム１と共に回転し、上部より叩きつけられたり、ゴロゴロと回転したりするような場合にも、ドラム１の中心軸１６に対して、実際には、垂直方向および左右方向の両方向については、相対的に前後方向よりも振動が大きくなる。このことから、左右方向の振動を検出することは、ドラム１の内での洗濯衣類９の動きを把握する上ではこの場合有利である。したがって、支持構造が図５に示されるような形態の場合には、受け筒２の左右方向の振動成分を用いて実施の形態１と同様にドラムの回転速度を制御することにより洗浄性能を高めることが可能となる。 In addition, when the laundry 9 rotates with the drum 1 during washing and is struck from the upper part or rotates around, the vertical direction and the left and right are actually relative to the central axis 16 of the drum 1. In both directions, vibration is relatively greater than in the front-rear direction. Therefore, detecting the vibration in the left-right direction is advantageous in this case in order to grasp the movement of the laundry 9 in the drum 1. Therefore, in the case where the support structure is as shown in FIG. 5, the cleaning performance is enhanced by controlling the rotational speed of the drum using the vibration component in the horizontal direction of the receiving tube 2 as in the first embodiment. It becomes possible.
　すなわち、叩き洗いに起因する周波数成分領域よりも長い周波数の成分が多い場合には、ドラム１の回転速度を遅くして洗濯衣類９をドラム１壁面より落とすように制御する。 That is, when there are a lot of components having a frequency longer than the frequency component region caused by tapping, the rotation speed of the drum 1 is decreased to control the laundry 9 to drop from the drum 1 wall surface.
　逆に、叩き洗いに起因する周波数成分領域よりも短い周波数の成分が多い場合には、ドラム１の回転速度を早めて洗濯衣類９がドラム１の動きと共にバッフル１０で十分持ち上げられるように制御する。 On the other hand, when there are many components having a frequency shorter than the frequency component region resulting from tapping, the rotational speed of the drum 1 is increased so that the laundry garment 9 is sufficiently lifted by the baffle 10 as the drum 1 moves. .
　このようにドラム１の回転速度を制御することで、高い位置より洗濯衣類９を落下させ、洗浄性能が高まる叩き洗いを実現することが可能となる。 By controlling the rotational speed of the drum 1 in this way, it is possible to drop the laundry garment 9 from a high position and realize tapping that enhances the cleaning performance.
　以上説明したように、本実施の形態は、洗濯物を収容して回転するドラム１と、ドラム１を収容する受け筒２と、受け筒２を筺体５上方から吊り下げる弾性吊り下げ部３と、受け筒２を筺体５下方から支持する防振ダンパ４と、ドラム１を回転させるモータ６と、受け筒２の振動を検出する振動検出部１１と、振動検出部１１で検出した振動に対して周波数成分を計算する周波数成分計算部１２と、周波数成分計算部１２で計算された周波数成分の大きさにしたがってモータ６の回転速度を変化させる回転速度制御部１３とを備え、弾性吊り下げ部３は、ドラム１の回転軸１６線上の位置から受け筒２を吊り下げ、振動検出部１１は、受け筒２の左右方向の振動を検出し、回転速度制御部１３は、左右方向の振動に対して計算された周波数成分の大きさにしたがってモータ６の回転速度を変化させる構成を有する。 As described above, the present embodiment includes a drum 1 that accommodates and rotates laundry, a receiving cylinder 2 that accommodates the drum 1, and an elastic suspension portion 3 that suspends the receiving cylinder 2 from above the housing 5. The vibration isolating damper 4 that supports the receiving tube 2 from below the housing 5, the motor 6 that rotates the drum 1, the vibration detecting unit 11 that detects the vibration of the receiving tube 2, and the vibration detected by the vibration detecting unit 11 A frequency component calculation unit 12 that calculates the frequency component, and a rotation speed control unit 13 that changes the rotation speed of the motor 6 according to the magnitude of the frequency component calculated by the frequency component calculation unit 12, and an elastic suspension unit 3 suspends the receiving tube 2 from a position on the rotation axis 16 of the drum 1, the vibration detecting unit 11 detects left-right vibration of the receiving tube 2, and the rotational speed control unit 13 detects vibration in the left-right direction. Frequency calculated for Having the configuration of changing the rotational speed of the motor 6 in accordance with the divided size.
　かかる構成によれば、ドラム１の回転と共に衣類が回転し、衣類が持ち上げられて上方から落下する際に下部のドラム１に衝突して振動が発生する。弾性吊り下げ部３が受け筒２の回転軸１６線上の位置から受け筒２を吊り下げている。そのため、受け筒２の前後方向に対する動きは弾性吊り下げ部３の弾性力によって緩和され、衣類の動きとは関係のない振動となる。また、受け筒２の上下方向に対する動きも同様に、防振ダンパ４の弾性力や減衰力によって緩和される。しかし、受け筒２の左右方向の振動は、弾性吊り下げ部３や防振ダンパ４によって緩衝されることなく、十分検出することができる。 According to such a configuration, the clothes rotate with the rotation of the drum 1, and when the clothes are lifted and dropped from above, they collide with the lower drum 1 to generate vibration. The elastic suspension part 3 suspends the receiving tube 2 from a position on the rotation axis 16 line of the receiving tube 2. For this reason, the movement of the receiving tube 2 in the front-rear direction is alleviated by the elastic force of the elastic suspension part 3, and the vibration is not related to the movement of the clothes. Similarly, the movement of the receiving cylinder 2 in the vertical direction is also mitigated by the elastic force and damping force of the vibration damping damper 4. However, the vibration in the left-right direction of the receiving cylinder 2 can be sufficiently detected without being buffered by the elastic suspension part 3 or the vibration damping damper 4.
　これによってドラム１内での衣類の動きと連動した受け筒２の振動を精度よく把握することが可能となる。したがって、洗濯時に最適な叩き洗いが不十分な状態や、衣類がドラム１に張り付いている状態で回転している場合に回転数を制御して、洗濯時に最適な叩き洗いの状態を維持し、洗浄性能に優れた洗濯機を得ることができる。 This makes it possible to accurately grasp the vibration of the receiving cylinder 2 that is linked to the movement of clothing in the drum 1. Therefore, when the optimal tapping washing is insufficient when washing, or when the clothes are rotating with the drum 1 attached to the drum 1, the number of rotations is controlled to maintain the optimum tapping washing state during washing. A washing machine with excellent cleaning performance can be obtained.
　以上のように、本発明は、受け筒の筐体に対する支持位置の違いによって、洗濯物の動きによる受け筒の振動に由来する振動成分の方向を決める。すなわち、周波数成分計算部での計算値算出に用いる振動成分の方向を決める。これにより、ドラム内での洗濯物の移動を精度良く把握し、衣類の洗濯に適したドラム回転制御を行い、洗浄性能を向上させることができる。 As described above, according to the present invention, the direction of the vibration component derived from the vibration of the receiving tube due to the movement of the laundry is determined by the difference in the support position of the receiving tube with respect to the housing. That is, the direction of the vibration component used for calculation value calculation in the frequency component calculation unit is determined. Accordingly, it is possible to accurately grasp the movement of the laundry in the drum, perform drum rotation control suitable for washing clothes, and improve the cleaning performance.
　以上に述べた通り、本発明の洗濯機は、衣類の洗濯状態に合わせた最適なドラムの回転数への制御を行い、洗浄性能を向上させることができる。これは、家庭用の洗濯機だけではなく、洗濯乾燥機や業務用の洗濯機などに広く適用可能である。 As described above, the washing machine of the present invention can improve the washing performance by controlling the rotation speed of the drum in accordance with the washing state of the clothes. This is widely applicable not only to a home-use washing machine but also to a washing / drying machine and a commercial washing machine.
　１　　ドラム
　２　　受け筒
　３　　弾性吊り下げ部
　４　　防振ダンパ
　５　　筐体
　６　　モータ
　７　　ベルト
　８　　衣類投入・取り出し口
　９　　洗濯衣類（洗濯物）
　１０　　バッフル
　１１　　振動検出部
　１２　　周波数成分計算部
　１３　　回転速度制御部
　１４　　重心点
　１５　　支持点
　１６　　中心軸（回転軸） DESCRIPTION OF SYMBOLS 1 Drum 2 Receptacle 3 Elastic suspension part 4 Anti-vibration damper 5 Case 6 Motor 7 Belt 8 Clothing input / exit port 9 Washing clothes (laundry)
DESCRIPTION OF SYMBOLS 10 Baffle 11 Vibration detection part 12 Frequency component calculation part 13 Rotational speed control part 14 Center of gravity point 15 Support point 16 Center axis (rotation axis)

Claims (4)

  1. 洗濯物を収容して回転するドラムと、前記ドラムを収容する受け筒と、前記受け筒を筺体上方から吊り下げる弾性吊り下げ部と、前記受け筒を前記筺体下方から支持する防振ダンパと、前記ドラムを回転させるモータと、前記受け筒の振動を検出する振動検出部と、前記振動検出部で検出した振動に対して周波数成分を計算する周波数成分計算部と、前記周波数成分計算部で計算された前記周波数成分の大きさにしたがって前記モータの回転速度を変化させる回転速度制御部とを備え、前記弾性吊り下げ部は、前記ドラムの回転軸線に対して対称の位置から前記受け筒を吊り下げ、前記振動検出部は、前記受け筒の前後方向の振動を検出し、前記回転速度制御部は、前記前後方向の振動に対して計算された前記周波数成分の大きさにしたがって前記モータの回転速度を変化させる洗濯機。 A drum that accommodates and rotates laundry, a receiving cylinder that accommodates the drum, an elastic suspension that suspends the receiving cylinder from above the housing, and a vibration damper that supports the receiving tube from below the housing; A motor that rotates the drum, a vibration detection unit that detects the vibration of the receiving cylinder, a frequency component calculation unit that calculates a frequency component for the vibration detected by the vibration detection unit, and a calculation performed by the frequency component calculation unit A rotation speed control unit that changes the rotation speed of the motor according to the magnitude of the frequency component that is generated, and the elastic suspension unit suspends the receiving tube from a position symmetrical with respect to the rotation axis of the drum. The vibration detection unit detects vibration in the front-rear direction of the receiving cylinder, and the rotational speed control unit follows the magnitude of the frequency component calculated for the vibration in the front-rear direction. Washing machine for changing the rotational speed of the motor.
  2. 前記弾性吊り下げ部は、前記ドラムと前記受け筒を合わせた状態での重心点を含む平面上の位置であって、前記ドラムの回転軸線を含み鉛直方向に延びる平面に対して対称の位置から前記受け筒を吊り下げる請求項１記載の洗濯機。 The elastic suspension portion is a position on a plane including a center of gravity in a state where the drum and the receiving cylinder are combined, and is symmetrical from a plane including the rotation axis of the drum and extending in the vertical direction. The washing machine according to claim 1, wherein the receiving tube is suspended.
  3. 洗濯物を収容して回転するドラムと、前記ドラムを収容する受け筒と、前記受け筒を筺体上方から吊り下げる弾性吊り下げ部と、前記受け筒を前記筺体下方から支持する防振ダンパと、前記ドラムを回転させるモータと、前記受け筒の振動を検出する振動検出部と、前記振動検出部で検出した振動に対して周波数成分を計算する周波数成分計算部と、前記周波数成分計算部で計算された前記周波数成分の大きさにしたがって前記モータの回転速度を変化させる回転速度制御部とを備え、前記弾性吊り下げ部は、前記ドラムの回転軸線上の位置から前記受け筒を吊り下げ、前記振動検出部は、前記受け筒の左右方向の振動を検出し、前記回転速度制御部は、前記左右方向の振動に対して計算された前記周波数成分の大きさにしたがって前記モータの回転速度を変化させる洗濯機。 A drum that accommodates and rotates laundry, a receiving cylinder that accommodates the drum, an elastic suspension that suspends the receiving cylinder from above the housing, and a vibration damper that supports the receiving tube from below the housing; A motor that rotates the drum, a vibration detection unit that detects the vibration of the receiving cylinder, a frequency component calculation unit that calculates a frequency component for the vibration detected by the vibration detection unit, and a calculation performed by the frequency component calculation unit A rotation speed control unit that changes the rotation speed of the motor according to the magnitude of the frequency component that is generated, and the elastic suspension unit suspends the receiving tube from a position on the rotation axis of the drum, The vibration detection unit detects left-right vibration of the cylinder, and the rotational speed control unit detects the mode according to the magnitude of the frequency component calculated for the left-right vibration. Washing machine for changing the rotational speed.
  4. 前記弾性吊り下げ部は、前記ドラムの回転軸線を含み鉛直方向に延びる平面の位置から前記受け筒を吊り下げる請求項３記載の洗濯機。 The washing machine according to claim 3, wherein the elastic suspension part suspends the receiving tube from a position of a plane including a rotation axis of the drum and extending in a vertical direction.
PCT/JP2009/004193 2008-09-02 2009-08-28 Washing machine WO2010026719A1 (en)

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CN2009801344117A CN102144061B (en) 2008-09-02 2009-08-28 Washing machine
KR1020117007510A KR101257174B1 (en) 2008-09-02 2009-08-28 Washing machine
EP09811249.3A EP2325366B1 (en) 2008-09-02 2009-08-28 Washing machine

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CN108360212B (en) * 2018-02-01 2023-11-28 惠而浦（中国）股份有限公司 Method for judging washing effect through acceleration sensor
CN109372923A (en) * 2018-11-14 2019-02-22 珠海格力电器股份有限公司 Shock attenuation supporting shoe, vehicle
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JP5446489B2 (en) 2014-03-19
CN102144061B (en) 2013-02-27
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EP2325366A4 (en) 2012-03-14
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