WO2018121598A1 - Front-loading washing machine - Google Patents

Front-loading washing machine Download PDF

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Publication number
WO2018121598A1
WO2018121598A1 PCT/CN2017/118955 CN2017118955W WO2018121598A1 WO 2018121598 A1 WO2018121598 A1 WO 2018121598A1 CN 2017118955 W CN2017118955 W CN 2017118955W WO 2018121598 A1 WO2018121598 A1 WO 2018121598A1
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WO
WIPO (PCT)
Prior art keywords
drum
eccentricity
amount
revolutions
washing machine
Prior art date
Application number
PCT/CN2017/118955
Other languages
French (fr)
Chinese (zh)
Inventor
西野雅文
松下丈也
竹中正
Original Assignee
青岛海尔洗衣机有限公司
Aqua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.)
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Publication date
Application filed by 青岛海尔洗衣机有限公司, Aqua株式会社 filed Critical 青岛海尔洗衣机有限公司
Priority to CN201780080411.8A priority Critical patent/CN110114524B/en
Publication of WO2018121598A1 publication Critical patent/WO2018121598A1/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
    • 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
    • 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 
    • D06F23/02—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 a horizontal 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
    • 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
    • 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 drum type washing machine having a washing function.
  • Some drum type washing machines installed in ordinary households or self-service laundries may have a washing and dehydrating function and a washing and dehydrating drying function.
  • a drum type washing machine having a dehydrating function generates vibration and noise in the drum due to the bias of the laundry. Further, when the deviation of the laundry is large, the amount of eccentricity of the drum at the time of rotation becomes large, and a large torque is required for the rotation, so that the dehydration operation cannot be started.
  • the drum type washing machine of Patent Document 1 when it is determined that the deviation of the laundry, that is, the eccentric amount is larger than a predetermined value, the drum is decelerated to a rotational speed less than the gravity by the output timing of the position detecting unit to eliminate the laundry.
  • the bias is to reduce the eccentricity of the drum.
  • a large piece in the laundry a laundry such as a felt or a sheet of a bedding, is recognized as an example of a large piece of laundry.
  • Patent Document 1 Japanese Patent No. 3332769
  • the present invention is an invention that solves the above problems. According to the present invention, it is possible to provide a drum type washing machine which not only accurately detects the deviation of the laundry in the washing tub, but also reliably detects the eccentric amount of the drum in the wide rotation region during the dehydrating process, and smoothly performs the dehydration. The process thus shortens the washing time.
  • the present invention relates to a drum type washing machine having a bottomed cylindrical drum that is configured to be rotatable about an axis extending in a horizontal direction or an oblique direction, and an eccentricity detecting unit that detects an eccentric amount and an eccentric position in the drum.
  • control for reducing the amount of eccentricity is performed, and when the eccentric amount is larger than the threshold value for the large laundry during the dehydration process, it is determined that the roller is caused by the roller.
  • the control for reducing the amount of eccentricity is performed in the case of a large laundry, and the control for lowering the amount of eccentricity is performed one or more times, and if the amount of eccentricity is not lower than the threshold value for the large laundry, it is low.
  • the drum is rotated by a predetermined number of rotations of a large number of washings set in the dehydration process.
  • the present invention is characterized in that even if the control for lowering the eccentric amount is performed a plurality of times, if the eccentric amount is not lower than the threshold value for the large laundry, it is lower than that set in the dehydration process.
  • the prescribed number of rotations of the large number of constant rotations ends the dehydration process.
  • the present invention is characterized in that the control for reducing the eccentric amount is brake control, that is, the drum is rotated at a control rotation number lower than the detected rotation number, and then the number of revolutions of the drum is lowered to The centrifugal force is less than the number of braking revolutions of gravity.
  • brake control that is, the drum is rotated at a control rotation number lower than the detected rotation number, and then the number of revolutions of the drum is lowered to The centrifugal force is less than the number of braking revolutions of gravity.
  • control for lowering the amount of eccentricity is stop control, that is, stopping the rotation of the drum, and then rotating the drum again.
  • the present invention is characterized in that the large-sized laundry threshold is set in accordance with the eccentric amount, and the dehydration process is ended by the number of rotations of the large-sized washings which are different for each of the large-sized laundry thresholds. .
  • the eccentricity detecting unit is based on an acceleration sensor that detects vibration of the drum, a drum position detecting device that emits a pulse signal according to rotation of the drum, and the drum that is detected by the acceleration sensor
  • the vibration and the pulse signal emitted from the drum position detecting device detect the eccentric amount and the eccentric position in the drum, and calculate any time in the information indicating the temporal change of the acceleration in at least one rotation of the drum.
  • the time difference between the point and the pulse signal is used to calculate the eccentric position in the drum based on the relationship between the time difference and the number of revolutions of the drum.
  • the present invention is characterized in that the eccentricity detecting unit detects an eccentric position and an eccentric amount by controlling a motor control device of a motor that drives the drum.
  • the present invention it is possible to provide a drum type washing machine which reliably detects a situation in which the amount of eccentricity of the drum cannot be reliably lowered by the control, and even in this state, the dehydration process is smoothly performed, whereby the washing can be effectively prevented The delay of time.
  • the drum type washing machine of the present invention if the amount of eccentricity is lowered by the control for lowering the amount of eccentricity, the same dehydration process as usual is performed, whereby a more rapid dehydration process can be performed.
  • the brake control is performed as the control for reducing the amount of eccentricity, whereby a rapid decrease in the amount of eccentricity can be achieved.
  • the stop control for reliably stopping the rotation of the drum once is performed, whereby the amount of eccentricity can be more reliably reduced.
  • the dehydration process is ended by the number of rotations of the large-sized washings which differ according to the threshold value of the large-sized laundry, and therefore, regardless of the state of the laundry in the drum, it is effective Avoid prolonged dehydration.
  • the deviation of the laundry is detected by the acceleration sensor, whereby the eccentric amount of the drum is detected by the motor control device used in the conventional washing machine based on the torque applied to the motor, and is disposed in the washing machine.
  • the eccentric position and the amount of eccentricity in the drum can be accurately detected even in a higher and wider rotation area than in the case where the behavior of the micro switch near the cylinder is mechanically detected. Thereby, the eccentricity is quickly eliminated, and therefore, the operation time of the washing machine can be shortened by avoiding the long-term dehydration process.
  • the deviation of the laundry is detected without using the acceleration sensor, and thus, it can be easily applied to various conventional washing machines.
  • Fig. 1 is a schematic cross-sectional view of a washing machine 1 according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of an electrical system of the same washing machine 1.
  • FIG. 3 is a graph showing detected values of the acceleration sensor 12 and the proximity sensor 14 of the same washing machine 1.
  • FIG. 4 is a flow chart showing a control flow of a dehydration process in the same embodiment.
  • FIG. 1 is a schematic cross-sectional view showing a configuration of a washing machine 1 of the present embodiment.
  • FIG. 2 is a functional block diagram showing an electrical configuration of the washing machine 1 of the present embodiment.
  • the washing machine 1 of the present embodiment can be applied to, for example, a laundromat or a household, and is called a so-called drum type washing machine, and includes a washing machine main body 1a, and a washing tub 1b including an outer side having an axis S1 extending substantially horizontally.
  • the washing machine body 1a shown in Fig. 1 has a substantially rectangular parallelepiped shape.
  • An opening 11 for taking in and taking out the laundry to the drum 2 is formed on the front surface 10a of the washing machine main body 1a, and an opening and closing cover (not shown) capable of opening and closing the opening 11 is attached.
  • the washing machine 1 of the present embodiment is referred to as a drum type fully automatic washing machine, and the washing tub 1b is attached in a substantially horizontal direction.
  • the outer cylinder 3 is a bottomed cylindrical member disposed inside the washing machine body 1a, and can store washing water therein.
  • an acceleration sensor 12 capable of detecting accelerations in three directions of the left-right direction, the vertical direction, and the front-rear direction is attached to the outer peripheral surface 3a of the outer cylinder 3.
  • the acceleration sensor 12 is a three-axis sensor capable of detecting accelerations in the left-right direction, the vertical direction, and the front-rear direction.
  • a discharge passage 3b capable of discharging the washing water to the outside is connected to the outer cylinder 3.
  • a discharge valve 32 that is openable and closable is provided in the discharge passage 3b.
  • the drum 2 is a bottomed cylindrical member that is disposed coaxially with the outer cylinder 3 in the outer cylinder 3 and that is rotatably supported in the outer cylinder 3.
  • the drum 2 can accommodate laundry inside, and its wall has a plurality of water holes.
  • the driving device 40 rotates the pulleys 15, 15 and the belt 15b by the motor 10, and rotates the drive shaft 17 that protrudes toward the bottom portion 2c of the drum 2, and applies a driving force to the drum 2 to rotate the drum 2.
  • a proximity switch 14 is provided in the vicinity of one of the pulleys 15, and the proximity switch 14 can detect the passage of the mark 15a formed on the pulley 15. Then, in the present embodiment, the proximity switch 14 corresponds to a drum position detecting device.
  • a motor control circuit 34 which is also referred to as a drum inverter, is connected to the motor 10.
  • FIG. 2 is a block diagram showing an electrical configuration of the washing machine 1 of the present embodiment.
  • the operation of the washing machine 1 is controlled by a control unit 30 including a microcomputer.
  • the control unit 30 includes a central control unit (CPU) 31 that controls the entire system, and a memory (not shown) is connected to the control unit 30, and the memory stores a value which will be described in detail below, that is, a threshold value ( ⁇ ) to be controlled.
  • the control unit 30 can execute a predetermined operation operation by executing a program stored in the memory by the microcomputer, and the memory temporarily stores data and the like used when the program is executed.
  • the central control unit 31 outputs a control signal to the rotational speed control unit 33, and further outputs the control signal to the motor control circuit (drum inverter) 34 to perform rotation control of the motor 10.
  • the rotation speed control unit 33 inputs a signal indicating the number of rotations of the motor 10 from the motor control circuit 34 in real time to constitute a control element.
  • the acceleration sensor 12 is connected to the unbalance amount detecting unit 35.
  • the acceleration sensor 12 and the proximity switch 14 are connected to the unbalanced position detecting unit 36.
  • the unbalance amount detecting unit 35 and the unbalanced position detecting unit 36 constitute an eccentricity detecting unit. Further, in the present embodiment, the configuration in which the unbalance amount detecting unit 35 and the unbalanced position detecting unit 36 are connected to the motor control circuit 34 is not denied.
  • the method of detecting the eccentric position and the eccentric amount (M) of the drum 2 by the motor control circuit 34 is a method of calculating the eccentric position from the fluctuation of the torque applied to the motor 10 and the detected value from the proximity switch 14.
  • the method of detecting the eccentricity position and the eccentric amount (M) by the motor control circuit 34 can be performed by a conventional method, and thus detailed description thereof will be omitted in the present embodiment.
  • the eccentricity of the drum 2 is calculated in the unbalance amount detecting portion 35 based on the magnitudes of the accelerations in the left-right direction, the up-and-down direction, and the front-rear direction obtained by the acceleration sensor 12.
  • the amount (M) is output to the central control unit 31.
  • the unbalanced position detecting unit 36 calculates an eccentric position based on the signal indicating the position of the mark 15a input from the proximity switch 14, and outputs it to the central control unit 31.
  • the eccentric position refers to a relative angle based on any portion in the circumferential direction of the axis S1.
  • the time difference t1 between the arbitrary time point of the signal indicating the acceleration of at least one period t2 of the drum 2 emitted from the acceleration sensor 12 and the timing of the pulse signal ps from the proximity switch 14 is calculated, It is compared with the relationship between the signal of the eccentric position/acceleration sensor 12 as the prior information and the pulse signal ps of the proximity switch 14, thereby calculating the circumferential direction in the drum 2 based on the relationship between the time difference t1 and the number of revolutions of the drum 2.
  • the eccentric position is controlled based on the calculated eccentric position to reduce the amount of eccentricity (M).
  • the eccentric amount (M) is expressed in proportion to the amplitude of the signal emitted from the acceleration sensor 12, the amplitude amount is expressed as the eccentric amount (M) in Fig. 3 .
  • FIG. 3 is a graph showing the relationship between the information indicating the temporal change of the acceleration calculated based on the acceleration obtained by the acceleration sensor 12 and the pulse signal ps obtained by the proximity switch 14.
  • the eccentric position is calculated from the time difference t1 between the maximum value (max) of the acceleration obtained by the acceleration sensor 12 and the pulse signal ps.
  • a scheme in which an eccentric position is calculated from a maximum value (max) and a minimum value (min) of acceleration is shown as the present invention.
  • the eccentric position may be calculated from any one or more of the acceleration zero point, the maximum value (max) of the acceleration, and the minimum value (min).
  • the eccentric position is calculated by the relative value of the period t1 shown in FIG. 3 with respect to one period t2 obtained from the pulse signal ps.
  • the range of the value of the time difference t1 is previously associated with each of the plurality of regions that are divided into a plurality in the circumferential direction of the drum 2, and is stored in the central control unit 31. Then, based on the value of t1 obtained, it is determined which region the eccentric position is located. Further, the association between the time difference t1 and the eccentric position does not hinder the change depending on the number of revolutions of the drum 2 and the number of resonance revolutions of the drum 2.
  • the central control unit 31 when the central control unit 31 receives an input signal from a dehydration button (not shown) or receives a signal indicating that the dehydration process should be started in the washing mode operation, the process proceeds to step ST1 to start the dehydration process.
  • step ST1 the central control unit 31 performs a process of raising the number of revolutions of the drum 2 to a number of revolutions sufficient to calculate the eccentric position of the drum 2 and the eccentric amount (M).
  • the eccentric position of the drum 2 and the eccentric amount (M) are calculated by the motor control circuit 34, the number of revolutions of the drum 2 is raised to 100 rpm as an example.
  • the eccentric position of the drum 2 and the eccentric amount (M) are calculated by the acceleration sensor 12, the number of revolutions of the drum 2 is raised to 200 rpm or more as an example.
  • step ST2 the central control unit 31 calculates the eccentricity position and the eccentric amount (M) of the drum 2, and determines whether or not the eccentric amount (M) is smaller than the threshold value ⁇ to be accelerated to the highest dehydration number.
  • the central control unit 31 moves to step ST14.
  • the eccentric amount (M) is equal to or greater than the control threshold value ⁇ , the central control unit 31 proceeds to step ST3.
  • step ST3 the central control unit 31 determines whether or not the eccentricity amount (M) has exceeded the value of the threshold value ⁇ to be controlled, that is, the number of times the large-purpose threshold value ⁇ has reached five times.
  • the central control unit 31 moves to step ST4. If the large-piece count BC reaches 5, the central control unit 31 moves to step ST10.
  • step ST4 the central control unit 31 determines whether or not the eccentric amount (M) is smaller than the oversized control threshold value ⁇ .
  • the central control unit 31 proceeds to step ST7.
  • the eccentric amount (M) is equal to or larger than the oversized control threshold value ⁇
  • the central control unit 31 proceeds to step ST5.
  • the central control unit 31 determines that there is a large laundry in the drum 2.
  • step ST5 the central control unit 31 increments the large item count by one.
  • step ST6 if the eccentric amount (M) exceeds the number of times of the large-piece control threshold value ⁇ , that is, the large-piece count BC does not reach 5, the central control unit 31 proceeds to step ST8. If the large-piece count BC reaches 5, the central control unit 31 moves to step ST10.
  • step ST7 the central control unit 31 resets the large-piece count to zero. After resetting the large-piece count BC to 0, the central control unit 31 moves to step ST8.
  • step ST8 the central control unit 31 determines whether or not the eccentricity position calculated in the above-described step ST2 is at the timing of the upper portion of the drum 2. When the eccentric position is at the timing of the upper portion of the drum 2, the central control unit 31 moves to step ST9.
  • step ST9 the central control unit 31 performs so-called brake control, that is, decelerating the number of revolutions of the drum 2 to, for example, 100 rpm, and further reducing the number of revolutions of the drum to a number of brake revolutions in which the centrifugal force is smaller than the gravity.
  • the central control unit 31 proceeds to step ST1.
  • the brake control is performed as the control for reducing the eccentric amount (M), that is, the number of revolutions of 200 rpm or 100 rpm is detected to rotate the drum 2, and then the number of revolutions of the drum is lowered. The number of brake revolutions to which the centrifugal force is less than gravity.
  • step ST10 the central control unit 31 determines whether or not the number of steps ST12 to be described later has elapsed, in other words, whether or not the number of times of stopping the drum DS for stopping the rotation of the drum 2 is three. If the number of times the drum is stopped is less than 3, the process proceeds to step ST11. If the number of times of stopping the drum DS is 3, the process proceeds to step ST13.
  • step ST11 the central control unit 31 increments the number of drum stops DS by one.
  • step ST12 the central control unit 31 stops the rotation of the drum 2 in order to change the eccentric position of the drum 2. Then, the central control unit 31 moves to step ST1.
  • the control for increasing the number of revolutions of the drum 2 by executing the step ST1 after the rotation of the drum 2 is stopped in this step ST12 corresponds to the stop control for reducing the eccentric amount (M) of the present embodiment.
  • step ST13 in order to prevent the eccentric amount (M) of the drum 2 from reaching the predetermined maximum number of dehydration revolutions, the central control unit 31 raises the number of revolutions of the drum 2 to a number of low-speed dehydration revolutions in which the number of revolutions is lower than the maximum number of dehydration revolutions.
  • the highest dehydration number is set to 800 rpm as an example.
  • the central control unit 31 moves to the position of the map A, that is, step ST15.
  • the number of rotations of the low speed dehydration can be set to a number of revolutions of about 3 in accordance with the eccentric amount (M) of the drum 2. Then, as described above, in the central control portion 31, the first large-piece threshold ( ⁇ 1), the second large-sized threshold ( ⁇ 2), the third large-sized threshold ( ⁇ 3), and the large-sized member for determining the low-speed dehydration revolution number are used.
  • the eccentricity threshold ( ⁇ ) is stored together in a memory (not shown).
  • the central control unit 31 sets the low-speed dehydration revolution number to 600 rpm as an example.
  • the central control unit 31 sets the low-speed dehydration revolution number to 400 rpm as an example.
  • the central control unit 31 sets the low-speed dehydration number to 200 rpm.
  • step ST14 the eccentric amount (M) of the drum 2 detected in step ST2 is smaller than the threshold value ⁇ to be controlled. Therefore, the central control unit 31 determines that the dehydration process can be smoothly performed, and accelerates the number of revolutions of the drum 2 to the present embodiment.
  • the highest dehydration revolution in the mode is 800 rpm.
  • step ST15 the central control unit 31 determines whether or not the elapsed time after the start of the dehydration process has passed the predetermined dehydration time.
  • the central control unit 31 ends the process of the dehydration process.
  • the number of revolutions of the drum 2 in the above-described step ST15 is the highest dehydration number of 800 rpm in the present embodiment.
  • the number of revolutions of the drum 2 is the above-described low-speed dehydration number.
  • the low-speed dehydration rotation number is any one of 600 rpm, 400 rpm, and 200 rpm according to the eccentric amount (M) of the drum 2.
  • the eccentric amount (M) is not lower than the large washing even when the above-described brake control and stop of reducing the eccentric amount (M) are performed a plurality of times at the low speed dehydration number to reach the above step ST15.
  • the threshold is used. Then, in the present embodiment, a plurality of threshold values, that is, a first large-sized threshold ( ⁇ 1), a second large-sized threshold ( ⁇ 2), and a third large-sized threshold ( ⁇ 3) are set as a reference based on the eccentric amount (M).
  • the dehydration process is terminated by the respective different low-speed dehydration revolutions, that is, the number of rotations of the large-piece washing.
  • the washing machine 1 of the present embodiment reliably detects that the eccentric amount (M) of the drum 2 cannot be reliably lowered by the control, and even in this state, the dehydration process is smoothly performed, thereby achieving an effective manner. Avoid delays in washing time.
  • the brake control as step ST9 is performed, whereby a rapid decrease in the amount of eccentricity (M) is achieved.
  • step ST12 the stop control from step ST12 to step ST1 is performed, whereby the reduction in the amount of eccentricity can be performed more reliably.
  • the first large piece threshold ( ⁇ 1), the second large piece threshold ( ⁇ 2), and the third large piece threshold ( ⁇ 3) are used for each of the threshold values for the large-sized laundry.
  • the different large-size washing rotation number that is, the low-speed dehydration rotation number, ends the dehydration process, and therefore, regardless of the state of the laundry in the drum 2, the long-term dehydration process is effectively prevented.
  • the present invention is applied to a washing machine of a type that opens the drum in the horizontal direction.
  • the present invention can also be applied to a tilting drum type washing machine that opens the drum in the obliquely upward direction, and also has a drying function. Laundry dryer.
  • only the eccentric position and the eccentricity are detected by the acceleration sensor.
  • the use of the motor control circuit without using the acceleration sensor is not negated, and the mechanical control circuit is used.
  • the specific details of the acceleration sensor and the specific calculation method of the eccentric position can be variously modified without departing from the gist of the invention.
  • drum type washing machine washing machine
  • roller position detecting device proximity sensor
  • eccentricity detecting unit unbalance detecting unit
  • eccentricity detecting unit unbalanced position detecting unit
  • ⁇ a threshold for large laundry
  • ⁇ 1 threshold for large laundry (first large threshold);
  • ⁇ 2 threshold for large laundry (second largest threshold);
  • ⁇ 3 threshold for large laundry (third largest threshold);
  • T1 time difference

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  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

A front-loading washing machine, comprising: a cylindrical drum (2) with a bottom, which is configured to be able to rotate about an axis (S1) extending along a horizontal direction or an inclined direction; and eccentricity detector units (35, 36), which detect an amount of eccentricity (M) and an eccentric position in the drum (2). During dehydration, when the amount of eccentricity (M) is greater than a threshold (β) for large laundry, it is determined that this is caused by large laundry existing in the drum (2) and control for reducing the amount of eccentricity (M) is performed; and after the control for reducing the amount of eccentricity (M) is performed for one or more times, if the amount of eccentricity (M) is still not lower than the threshold (β) for large laundry, the drum (2) is enabled to rotate at a rotational speed lower than the rotational speed of specified constant revolutions per minute for large laundry during dehydration. The washing machine (1) can effectively prevent delay of washing time by making the dehydration be completed smoothly.

Description

滚筒式洗衣机Drum washing machine 技术领域Technical field
本发明涉及一种具有洗涤功能的滚筒式洗衣机。The present invention relates to a drum type washing machine having a washing function.
背景技术Background technique
设置于普通家庭或者自助洗衣店等的滚筒式洗衣机有的会具备洗涤脱水功能、洗涤脱水烘干功能。Some drum type washing machines installed in ordinary households or self-service laundries may have a washing and dehydrating function and a washing and dehydrating drying function.
具有脱水功能的滚筒式洗衣机会在滚筒内因洗涤物的偏倚而产生振动、噪音。此外，若洗涤物的偏倚大，则旋转时的滚筒的偏心量变大，旋转需要较大的转矩，因此，无法开始脱水运转。A drum type washing machine having a dehydrating function generates vibration and noise in the drum due to the bias of the laundry. Further, when the deviation of the laundry is large, the amount of eccentricity of the drum at the time of rotation becomes large, and a large torque is required for the rotation, so that the dehydration operation cannot be started.
此处，在专利文献1的滚筒式洗衣机中，在判定洗涤物的偏倚即偏心量大于规定值的情况下，根据位置检测单元的输出定时使滚筒减速至离心力小于重力的转速来消除洗涤物的偏在，即降低滚筒的偏心量。In the drum type washing machine of Patent Document 1, when it is determined that the deviation of the laundry, that is, the eccentric amount is larger than a predetermined value, the drum is decelerated to a rotational speed less than the gravity by the output timing of the position detecting unit to eliminate the laundry. The bias is to reduce the eccentricity of the drum.
特别是，在洗涤物中，衣物中的大件、被视为床上用品的毛毯或床单这样的洗涤物作为一个例子被识别为大件衣物。In particular, in the laundry, a large piece in the laundry, a laundry such as a felt or a sheet of a bedding, is recognized as an example of a large piece of laundry.
这种大件衣物在滚筒内被配置于偏倚位置的情况下，通常滚筒的偏心量会变大。When such a large piece of laundry is placed in a biased position in the drum, the amount of eccentricity of the drum generally increases.
现有技术文献Prior art literature
专利文献Patent literature
专利文献1：日本专利第3332769号公报Patent Document 1: Japanese Patent No. 3332769
发明内容Summary of the invention
发明所要解决的问题Problems to be solved by the invention
然而，在包括上述专利文献1所记载的构件的当前的滚筒式洗衣机中，即 使产生由上述大件衣物导致的滚筒的偏心，也不能与通常的洗涤物的偏心分开来检测。However, in the current drum type washing machine including the member described in Patent Document 1, even if the eccentricity of the drum caused by the large-sized laundry is generated, it cannot be detected separately from the eccentricity of the normal laundry.
另一方面，即使滚筒的偏心量因大件衣物而变大，如果用于消除该偏心的控制需要时间，则也会导致脱水过程的长时间化，其结果是会导致延长运转时间这样的不良情况。On the other hand, even if the eccentric amount of the drum becomes large due to the large laundry, if the control for eliminating the eccentricity takes time, the dehydration process is prolonged, and as a result, the operation time is prolonged. Happening.
本发明是解决上述这样的问题的发明。通过本发明，能提供一种滚筒式洗衣机，其不仅准确地检测出洗涤筒内的洗涤物的偏在，还在脱水过程时的宽旋转区域中可靠地检测出滚筒的偏心量，顺利地进行脱水过程，由此能缩短洗涤时间。The present invention is an invention that solves the above problems. According to the present invention, it is possible to provide a drum type washing machine which not only accurately detects the deviation of the laundry in the washing tub, but also reliably detects the eccentric amount of the drum in the wide rotation region during the dehydrating process, and smoothly performs the dehydration. The process thus shortens the washing time.
用于解决问题的方案Solution to solve the problem
本发明是一种滚筒式洗衣机，其具有：有底筒状的滚筒，构成为能绕水平方向或者倾斜方向延伸的轴线旋转；以及偏心检测单元，检测所述滚筒内的偏心量以及偏心位置，在所述滚筒内的偏心量超过规定的阈值时，进行使偏心量降低的控制，其特征在于，在脱水过程中，当偏心量大于大型洗涤物用阈值时，判断为是起因于所述滚筒内存在大型洗涤物，而进行使偏心量降低的控制，即使进行一次或者多次使所述偏心量降低的控制，如果所述偏心量也不低于所述大型洗涤物用阈值，则以低于所述脱水过程中设定的规定的恒定转数的大件洗涤用转数，使所述滚筒旋转。The present invention relates to a drum type washing machine having a bottomed cylindrical drum that is configured to be rotatable about an axis extending in a horizontal direction or an oblique direction, and an eccentricity detecting unit that detects an eccentric amount and an eccentric position in the drum. When the amount of eccentricity in the drum exceeds a predetermined threshold value, control for reducing the amount of eccentricity is performed, and when the eccentric amount is larger than the threshold value for the large laundry during the dehydration process, it is determined that the roller is caused by the roller The control for reducing the amount of eccentricity is performed in the case of a large laundry, and the control for lowering the amount of eccentricity is performed one or more times, and if the amount of eccentricity is not lower than the threshold value for the large laundry, it is low. The drum is rotated by a predetermined number of rotations of a large number of washings set in the dehydration process.
此外，本发明的特征在于，即使进行多次使所述偏心量降低的控制，如果所述偏心量也不低于所述大型洗涤物用阈值，则以低于所述脱水过程中设定的规定的恒定转数的大件洗涤用转数，结束脱水过程。Further, the present invention is characterized in that even if the control for lowering the eccentric amount is performed a plurality of times, if the eccentric amount is not lower than the threshold value for the large laundry, it is lower than that set in the dehydration process. The prescribed number of rotations of the large number of constant rotations ends the dehydration process.
此外，本发明的特征在于，使所述偏心量降低的控制是制动控制，即，以低于所述检测转数的控制用转数使所述滚筒旋转，然后使滚筒的转数降低至离心力小于重力的制动转数。Further, the present invention is characterized in that the control for reducing the eccentric amount is brake control, that is, the drum is rotated at a control rotation number lower than the detected rotation number, and then the number of revolutions of the drum is lowered to The centrifugal force is less than the number of braking revolutions of gravity.
此外，本发明的特征在于，使所述偏心量降低的控制是停止控制，即，停止所述滚筒的旋转，然后再次使滚筒旋转。Further, the present invention is characterized in that the control for lowering the amount of eccentricity is stop control, that is, stopping the rotation of the drum, and then rotating the drum again.
此外，本发明的特征在于，所述大件洗涤物用阈值根据偏心量设定多个，通过按照每一所述大件洗涤物用阈值而不同的大件洗涤用转数结束所述脱水过 程。Further, the present invention is characterized in that the large-sized laundry threshold is set in accordance with the eccentric amount, and the dehydration process is ended by the number of rotations of the large-sized washings which are different for each of the large-sized laundry thresholds. .
此外，本发明的特征在于，所述偏心检测单元基于检测所述滚筒的振动的加速度传感器、根据所述滚筒的旋转发出脉冲信号的滚筒位置检测装置和通过所述加速度传感器检测到的所述滚筒的振动以及从所述滚筒位置检测装置发出的脉冲信号，检测所述滚筒内的偏心量以及偏心位置，运算表示所述滚筒的至少旋转一圈中的加速度的时间变化的信息中的任意的时间点与所述脉冲信号的时间差，根据该时间差与所述滚筒的转数的关系计算出所述滚筒内的偏心位置。Further, the present invention is characterized in that the eccentricity detecting unit is based on an acceleration sensor that detects vibration of the drum, a drum position detecting device that emits a pulse signal according to rotation of the drum, and the drum that is detected by the acceleration sensor The vibration and the pulse signal emitted from the drum position detecting device detect the eccentric amount and the eccentric position in the drum, and calculate any time in the information indicating the temporal change of the acceleration in at least one rotation of the drum. The time difference between the point and the pulse signal is used to calculate the eccentric position in the drum based on the relationship between the time difference and the number of revolutions of the drum.
此外，本发明的特征在于，所述偏心检测单元通过控制对所述滚筒进行驱动的电机的电机控制装置来检测偏心位置以及偏心量。Further, the present invention is characterized in that the eccentricity detecting unit detects an eccentric position and an eccentric amount by controlling a motor control device of a motor that drives the drum.
发明效果Effect of the invention
根据本发明，能提供一种滚筒式洗衣机，其可靠地检测出处于无法通过控制可靠地降低滚筒的偏心量的状况，即使处于该状况下也顺利地进行脱水过程，由此能有效地避免洗涤时间的延迟。According to the present invention, it is possible to provide a drum type washing machine which reliably detects a situation in which the amount of eccentricity of the drum cannot be reliably lowered by the control, and even in this state, the dehydration process is smoothly performed, whereby the washing can be effectively prevented The delay of time.
在本发明的滚筒式洗衣机中，如果通过使偏心量降低的控制而使偏心量降低，则进行与平时一样的脱水过程，由此能进行更迅速的脱水过程。In the drum type washing machine of the present invention, if the amount of eccentricity is lowered by the control for lowering the amount of eccentricity, the same dehydration process as usual is performed, whereby a more rapid dehydration process can be performed.
在本发明的滚筒式洗衣机中，作为使偏心量降低的控制进行制动控制，由此能实现迅速的偏心量的降低。In the drum type washing machine of the present invention, the brake control is performed as the control for reducing the amount of eccentricity, whereby a rapid decrease in the amount of eccentricity can be achieved.
在本发明的滚筒式洗衣机中，进行将滚筒的旋转可靠地停止一次的停止控制，由此能更可靠地进行偏心量的降低。In the drum type washing machine of the present invention, the stop control for reliably stopping the rotation of the drum once is performed, whereby the amount of eccentricity can be more reliably reduced.
在本发明的滚筒式洗衣机中，通过按照所述大件洗涤物用阈值而不同的大件洗涤用转数结束所述脱水过程，因此，不管滚筒内的洗涤物的状况如何，都能有效地避免脱水过程的长时间化。In the drum type washing machine of the present invention, the dehydration process is ended by the number of rotations of the large-sized washings which differ according to the threshold value of the large-sized laundry, and therefore, regardless of the state of the laundry in the drum, it is effective Avoid prolonged dehydration.
在本发明的滚筒式洗衣机中，通过加速度传感器来检测洗涤物的偏倚，由此，与以往的洗衣机中使用的经由电机控制装置根据施加于电机的转矩检测滚筒的偏心量、通过配置于洗涤筒附近的微动开关的举动机械地检测偏心量的方案相比，即使在更高且更宽的旋转区域，也能准确地检测滚筒内的偏心位置、偏心量。由此，会迅速地消除偏心，因此，通过避免脱水过程的长时间化能缩短洗衣机的运转时间。In the drum type washing machine of the present invention, the deviation of the laundry is detected by the acceleration sensor, whereby the eccentric amount of the drum is detected by the motor control device used in the conventional washing machine based on the torque applied to the motor, and is disposed in the washing machine. The eccentric position and the amount of eccentricity in the drum can be accurately detected even in a higher and wider rotation area than in the case where the behavior of the micro switch near the cylinder is mechanically detected. Thereby, the eccentricity is quickly eliminated, and therefore, the operation time of the washing machine can be shortened by avoiding the long-term dehydration process.
在本发明的滚筒式洗衣机中，即使不使用加速度传感器也会检测出洗涤物的偏倚，由此，能容易应用于现有的各种洗衣机。In the drum type washing machine of the present invention, the deviation of the laundry is detected without using the acceleration sensor, and thus, it can be easily applied to various conventional washing machines.
附图说明DRAWINGS
图1是本发明的一实施方式的洗衣机1的示意性剖面图。Fig. 1 is a schematic cross-sectional view of a washing machine 1 according to an embodiment of the present invention.
图2是同一洗衣机1的电气***框图。2 is a block diagram of an electrical system of the same washing machine 1.
图3是表示同一洗衣机1的加速度传感器12以及接近传感器14的检测值的曲线图。FIG. 3 is a graph showing detected values of the acceleration sensor 12 and the proximity sensor 14 of the same washing machine 1.
图4是表示同一实施方式的脱水过程的控制流程的流程图。4 is a flow chart showing a control flow of a dehydration process in the same embodiment.
具体实施方式detailed description
以下，基于附图对本发明的一实施方式进行详细说明。Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.
图1是表示本实施方式的洗衣机1的结构的示意性剖面图。图2是表示本实施方式的洗衣机1的电气结构的功能框图。FIG. 1 is a schematic cross-sectional view showing a configuration of a washing machine 1 of the present embodiment. FIG. 2 is a functional block diagram showing an electrical configuration of the washing machine 1 of the present embodiment.
本实施方式的洗衣机1能适用于例如自助洗衣店或家庭，并且被称为所谓的滚筒式洗衣机，其具备：洗衣机主体1a；洗涤筒1b，包括具有大致水平伸出而成的轴线S1的外筒3和滚筒2；驱动装置40；以及仅在图2中示出的控制部30。The washing machine 1 of the present embodiment can be applied to, for example, a laundromat or a household, and is called a so-called drum type washing machine, and includes a washing machine main body 1a, and a washing tub 1b including an outer side having an axis S1 extending substantially horizontally. Cartridge 3 and drum 2; drive unit 40; and control unit 30 shown only in FIG.
图1所示的洗衣机主体1a是大致长方体形状。在洗衣机主体1a的前表面10a，形成有用于对滚筒2投入取出洗涤物的开口11，并且安装有能开闭该开口11的未图示的开闭盖。本实施方式的洗衣机1被称为滚筒式全自动洗衣机，其洗涤筒1b呈大致水平方向安装。The washing machine body 1a shown in Fig. 1 has a substantially rectangular parallelepiped shape. An opening 11 for taking in and taking out the laundry to the drum 2 is formed on the front surface 10a of the washing machine main body 1a, and an opening and closing cover (not shown) capable of opening and closing the opening 11 is attached. The washing machine 1 of the present embodiment is referred to as a drum type fully automatic washing machine, and the washing tub 1b is attached in a substantially horizontal direction.
外筒3是配置于洗衣机主体1a的内部的有底筒状的构件，能在内部储存洗涤水。如图1所示，在外筒3的外周面3a，安装有能检测例如左右方向、上下方向以及前后方向这三个方向的加速度的加速度传感器12。需要说明的是，在本实施方式中，作为一个例子，加速度传感器12是能检测左右方向、上下方向以及前后方向的加速度的三轴传感器。此外，在外筒3连接有能向外部排出洗 涤水的排出路3b。在该排出路3b中设有可开闭地设置的排出阀32。The outer cylinder 3 is a bottomed cylindrical member disposed inside the washing machine body 1a, and can store washing water therein. As shown in FIG. 1, an acceleration sensor 12 capable of detecting accelerations in three directions of the left-right direction, the vertical direction, and the front-rear direction is attached to the outer peripheral surface 3a of the outer cylinder 3. In the present embodiment, as an example, the acceleration sensor 12 is a three-axis sensor capable of detecting accelerations in the left-right direction, the vertical direction, and the front-rear direction. Further, a discharge passage 3b capable of discharging the washing water to the outside is connected to the outer cylinder 3. A discharge valve 32 that is openable and closable is provided in the discharge passage 3b.
滚筒2是与外筒3同轴地配置于外筒3内，并且自由旋转地支承于外筒3内的有底筒状的构件。滚筒2能在内部容纳洗涤物，其壁面具有许多通水孔。The drum 2 is a bottomed cylindrical member that is disposed coaxially with the outer cylinder 3 in the outer cylinder 3 and that is rotatably supported in the outer cylinder 3. The drum 2 can accommodate laundry inside, and its wall has a plurality of water holes.
如图1所示，驱动装置40通过电机10使滑轮15、15以及传动带15b旋转，并且使朝向滚筒2的底部2c伸出的驱动轴17旋转，对滚筒2赋予驱动力，使滚筒2旋转。此外，在一方的滑轮15的附近设置有接近开关14，该接近开关14能检测形成于该滑轮15的标记15a的通过。然后，在本实施方式中，该接近开关14相当于滚筒位置检测装置。As shown in FIG. 1, the driving device 40 rotates the pulleys 15, 15 and the belt 15b by the motor 10, and rotates the drive shaft 17 that protrudes toward the bottom portion 2c of the drum 2, and applies a driving force to the drum 2 to rotate the drum 2. Further, a proximity switch 14 is provided in the vicinity of one of the pulleys 15, and the proximity switch 14 can detect the passage of the mark 15a formed on the pulley 15. Then, in the present embodiment, the proximity switch 14 corresponds to a drum position detecting device.
此外，在本实施方式中，作为驱动装置40的一个构成要素，具有连接于电机10的也被称为滚筒变频器的电机控制电路34。Further, in the present embodiment, as one component of the drive device 40, a motor control circuit 34, which is also referred to as a drum inverter, is connected to the motor 10.
图2是表示本实施方式的洗衣机1的电气结构的框图。洗衣机1的动作通过包括微型计算机的控制部30来控制。控制部30具备负责控制整个***的中央控制部(CPU)31，在该控制部30连接有未图示的存储器，该存储器分别存储有以下将详细叙述的值，即：要控制阈值(α)、大件计数BC、大件偏心量阈值(β)、滚筒停止次数DS、第一大件阈值(γ1)、第二大件阈值(γ2)、以及第三大件阈值(γ3)。此外，通过控制部30，通过由微型计算机来执行存储于存储器的程序，能进行预定的运转动作，并且存储器临时存储有执行上述程序时所用的数据等。FIG. 2 is a block diagram showing an electrical configuration of the washing machine 1 of the present embodiment. The operation of the washing machine 1 is controlled by a control unit 30 including a microcomputer. The control unit 30 includes a central control unit (CPU) 31 that controls the entire system, and a memory (not shown) is connected to the control unit 30, and the memory stores a value which will be described in detail below, that is, a threshold value (α) to be controlled. The large piece count BC, the large piece eccentricity threshold (β), the number of drum stops DS, the first large piece threshold (γ1), the second large piece threshold (γ2), and the third large piece threshold (γ3). Further, the control unit 30 can execute a predetermined operation operation by executing a program stored in the memory by the microcomputer, and the memory temporarily stores data and the like used when the program is executed.
中央控制部31向转速控制部33输出控制信号，进而将该控制信号向电机控制电路(滚筒变频器)34输出，进行电机10的旋转控制。需要说明的是，转速控制部33从电机控制电路34实时输入表示电机10的转速的信号，构成控制要素。The central control unit 31 outputs a control signal to the rotational speed control unit 33, and further outputs the control signal to the motor control circuit (drum inverter) 34 to perform rotation control of the motor 10. It should be noted that the rotation speed control unit 33 inputs a signal indicating the number of rotations of the motor 10 from the motor control circuit 34 in real time to constitute a control element.
在不平衡量检测部35连接有加速度传感器12。在不平衡位置检测部36连接有加速度传感器12以及接近开关14。由不平衡量检测部35和不平衡位置检测部36构成偏心检测单元。此外，在本实施方式中，并不否定不平衡量检测部35以及不平衡位置检测部36连接于上述电机控制电路34的方案。通过该电机控制电路34来检测滚筒2的偏心位置以及偏心量(M)的方法是根据施加于电机10的转矩的变动和来自上述接近开关14的检测值计算出偏心位置的方法。 由该电机控制电路34进行的偏心位置、偏心量(M)的检测方法可以利用现有的方法，因此，在本实施方式中省略详细的说明。The acceleration sensor 12 is connected to the unbalance amount detecting unit 35. The acceleration sensor 12 and the proximity switch 14 are connected to the unbalanced position detecting unit 36. The unbalance amount detecting unit 35 and the unbalanced position detecting unit 36 constitute an eccentricity detecting unit. Further, in the present embodiment, the configuration in which the unbalance amount detecting unit 35 and the unbalanced position detecting unit 36 are connected to the motor control circuit 34 is not denied. The method of detecting the eccentric position and the eccentric amount (M) of the drum 2 by the motor control circuit 34 is a method of calculating the eccentric position from the fluctuation of the torque applied to the motor 10 and the detected value from the proximity switch 14. The method of detecting the eccentricity position and the eccentric amount (M) by the motor control circuit 34 can be performed by a conventional method, and thus detailed description thereof will be omitted in the present embodiment.
然后，当接近开关14检测到标记15a(参照图1)时，根据由加速度传感器12得到的左右方向、上下方向以及前后方向的加速度的大小，在不平衡量检测部35中计算出滚筒2的偏心量(M)，该偏心量(M)被输出给中央控制部31。Then, when the proximity switch 14 detects the mark 15a (refer to FIG. 1), the eccentricity of the drum 2 is calculated in the unbalance amount detecting portion 35 based on the magnitudes of the accelerations in the left-right direction, the up-and-down direction, and the front-rear direction obtained by the acceleration sensor 12. The amount (M) is output to the central control unit 31.
不平衡位置检测部36根据从接近开关14输入的表示标记15a的位置的信号计算出偏心位置，并输出给中央控制部31。此处，偏心位置是指，以轴线S1的周向上的任一部位为基准的相对角度。The unbalanced position detecting unit 36 calculates an eccentric position based on the signal indicating the position of the mark 15a input from the proximity switch 14, and outputs it to the central control unit 31. Here, the eccentric position refers to a relative angle based on any portion in the circumferential direction of the axis S1.
接着，对本实施方式的控制方法的具体方案进一步进行说明。Next, a specific embodiment of the control method of the present embodiment will be further described.
对本实施方式中的偏心位置的计算步骤进行说明。本实施方式中，在脱水过程中，运算从加速度传感器12发出的表示滚筒2的至少一个周期t2的加速度的信号中的任意的时间点与从接近开关14发出脉冲信号ps的定时的时间差t1，并与作为事前信息的偏心位置/加速度传感器12的信号、接近开关14的脉冲信号ps的关系进行比较，由此，根据时间差t1与滚筒2的转数的关系计算出滚筒2内的周向上的偏心位置，基于计算出的偏心位置进行降低偏心量(M)的控制。以下，特别是，对本实施方式的偏心位置的具体计算步骤进行说明。然后，由于偏心量(M)与从加速度传感器12发出的信号的振幅量成比例地表示，因此图3中将该振幅量表示为偏心量(M)。The calculation procedure of the eccentric position in the present embodiment will be described. In the present embodiment, during the dehydration process, the time difference t1 between the arbitrary time point of the signal indicating the acceleration of at least one period t2 of the drum 2 emitted from the acceleration sensor 12 and the timing of the pulse signal ps from the proximity switch 14 is calculated, It is compared with the relationship between the signal of the eccentric position/acceleration sensor 12 as the prior information and the pulse signal ps of the proximity switch 14, thereby calculating the circumferential direction in the drum 2 based on the relationship between the time difference t1 and the number of revolutions of the drum 2. The eccentric position is controlled based on the calculated eccentric position to reduce the amount of eccentricity (M). Hereinafter, in particular, a specific calculation procedure of the eccentric position of the present embodiment will be described. Then, since the eccentric amount (M) is expressed in proportion to the amplitude of the signal emitted from the acceleration sensor 12, the amplitude amount is expressed as the eccentric amount (M) in Fig. 3 .
图3是示出了表示基于由加速度传感器12得到的加速度计算出的加速度的时间变化的信息与由接近开关14得到的脉冲信号ps的关系的曲线图。在图3中，为了方便，根据由加速度传感器12得到的加速度的极大值(max)与脉冲信号ps的时间差t1计算出偏心位置。需要说明的是，在图3所示的本实施方式中，作为一个例子，示出了根据加速度的极大值(max)以及极小值(min)计算出偏心位置的方案，但作为本发明的其他实施例，也可以根据加速度零点、加速度的极大值(max)，极小值(min)中的任一个或者多个计算出偏心位置。FIG. 3 is a graph showing the relationship between the information indicating the temporal change of the acceleration calculated based on the acceleration obtained by the acceleration sensor 12 and the pulse signal ps obtained by the proximity switch 14. In FIG. 3, for convenience, the eccentric position is calculated from the time difference t1 between the maximum value (max) of the acceleration obtained by the acceleration sensor 12 and the pulse signal ps. In addition, in the present embodiment shown in FIG. 3, as an example, a scheme in which an eccentric position is calculated from a maximum value (max) and a minimum value (min) of acceleration is shown as the present invention. In other embodiments, the eccentric position may be calculated from any one or more of the acceleration zero point, the maximum value (max) of the acceleration, and the minimum value (min).
即，通过如图3所示的时间差t1相对于根据脉冲信号ps得到的一个周期t2的相对值计算出偏心位置。作为其一个例子，预先将时间差t1的值的范围与将 滚筒2内在圆周方向上分割为多个的各区域建立关联并存储于中央控制部31。然后，根据所得的t1的值确定出偏心位置位于哪个区域。此外，时间差t1与偏心位置的关联建立不会妨碍根据滚筒2的转数、滚筒2的共振转数进行变更的方案。That is, the eccentric position is calculated by the relative value of the period t1 shown in FIG. 3 with respect to one period t2 obtained from the pulse signal ps. As an example, the range of the value of the time difference t1 is previously associated with each of the plurality of regions that are divided into a plurality in the circumferential direction of the drum 2, and is stored in the central control unit 31. Then, based on the value of t1 obtained, it is determined which region the eccentric position is located. Further, the association between the time difference t1 and the eccentric position does not hinder the change depending on the number of revolutions of the drum 2 and the number of resonance revolutions of the drum 2.
在本实施方式中，当中央控制部31接收到来自未图示的脱水按键的输入信号或者在洗涤模式运转中接收到旨在应该开始脱水过程的信号时，进入步骤ST1，开始脱水过程。In the present embodiment, when the central control unit 31 receives an input signal from a dehydration button (not shown) or receives a signal indicating that the dehydration process should be started in the washing mode operation, the process proceeds to step ST1 to start the dehydration process.
<步骤ST1><Step ST1>
在步骤ST1中，中央控制部31进行使滚筒2的转数上升至足以计算出滚筒2的偏心位置以及偏心量(M)的转数的处理。在本实施方式中，当采用通过电机控制电路34计算出滚筒2的偏心位置以及偏心量(M)的方案时，作为一个例子使滚筒2的转数上升至100rpm。此外，当采用通过加速度传感器12计算出滚筒2的偏心位置以及偏心量(M)的方案时，作为一个例子使滚筒2的转数上升至200rpm以上。In step ST1, the central control unit 31 performs a process of raising the number of revolutions of the drum 2 to a number of revolutions sufficient to calculate the eccentric position of the drum 2 and the eccentric amount (M). In the present embodiment, when the eccentric position of the drum 2 and the eccentric amount (M) are calculated by the motor control circuit 34, the number of revolutions of the drum 2 is raised to 100 rpm as an example. Further, when the eccentric position of the drum 2 and the eccentric amount (M) are calculated by the acceleration sensor 12, the number of revolutions of the drum 2 is raised to 200 rpm or more as an example.
<步骤ST2><Step ST2>
在步骤ST2中，中央控制部31计算出偏心位置以及滚筒2的偏心量(M)，并且判定偏心量(M)是否小于无法加速至最高脱水转数的要控制阈值α。在偏心量(M)小于要控制阈值α时，中央控制部31移至步骤ST14。在偏心量(M)为要控制阈值α以上时，中央控制部31移至步骤ST3。In step ST2, the central control unit 31 calculates the eccentricity position and the eccentric amount (M) of the drum 2, and determines whether or not the eccentric amount (M) is smaller than the threshold value α to be accelerated to the highest dehydration number. When the eccentric amount (M) is smaller than the threshold value α to be controlled, the central control unit 31 moves to step ST14. When the eccentric amount (M) is equal to or greater than the control threshold value α, the central control unit 31 proceeds to step ST3.
<步骤ST3><Step ST3>
在步骤ST3中，中央控制部31判定目前为止偏心量(M)超过大于要控制阈值α的值即大件用阈值β的次数是否达到5次。如果偏心量(M)超过大件控制用阈值β的次数即大件计数BC未达到5，则中央控制部31移至步骤ST4。如果大件计数BC达到5，则中央控制部31移至步骤ST10。In step ST3, the central control unit 31 determines whether or not the eccentricity amount (M) has exceeded the value of the threshold value α to be controlled, that is, the number of times the large-purpose threshold value β has reached five times. When the eccentric amount (M) exceeds the number of times of the large-piece control threshold value β, that is, the large-piece count BC does not reach 5, the central control unit 31 moves to step ST4. If the large-piece count BC reaches 5, the central control unit 31 moves to step ST10.
<步骤ST4><Step ST4>
在步骤ST4中，中央控制部31判定偏心量(M)是否小于大件控制用阈值β。在偏心量(M)小于大件控制用阈值β时，中央控制部31移至步骤ST7。如果偏心量(M)为大件控制用阈值β以上，则中央控制部31移至步骤ST5。 即，在该步骤ST5中，由于偏心量(M)大于大型洗涤物用阈值β，因此中央控制部31判断为滚筒2内存在大型洗涤物。In step ST4, the central control unit 31 determines whether or not the eccentric amount (M) is smaller than the oversized control threshold value β. When the eccentric amount (M) is smaller than the large-piece control threshold value β, the central control unit 31 proceeds to step ST7. When the eccentric amount (M) is equal to or larger than the oversized control threshold value β, the central control unit 31 proceeds to step ST5. In other words, in the step ST5, since the eccentric amount (M) is larger than the large-scale laundry threshold value β, the central control unit 31 determines that there is a large laundry in the drum 2.
<步骤ST5><Step ST5>
在步骤ST5中，中央控制部31将大件计数加1。In step ST5, the central control unit 31 increments the large item count by one.
<步骤ST6><Step ST6>
在步骤ST6中，如果偏心量(M)超过大件控制用阈值β的次数即大件计数BC未达到5，则中央控制部31移至步骤ST8。如果大件计数BC达到5，则中央控制部31移至步骤ST10。In step ST6, if the eccentric amount (M) exceeds the number of times of the large-piece control threshold value β, that is, the large-piece count BC does not reach 5, the central control unit 31 proceeds to step ST8. If the large-piece count BC reaches 5, the central control unit 31 moves to step ST10.
<步骤ST7><Step ST7>
在步骤ST7中，中央控制部31将大件计数复位至0。在将大件计数BC复位至0之后，中央控制部31移至步骤ST8。In step ST7, the central control unit 31 resets the large-piece count to zero. After resetting the large-piece count BC to 0, the central control unit 31 moves to step ST8.
<步骤ST8><Step ST8>
在步骤ST8中，中央控制部31判定是否处于上述步骤ST2中计算出的偏心位置位于滚筒2的上部的定时。在处于偏心位置位于滚筒2的上部的定时时，中央控制部31移至步骤ST9。In step ST8, the central control unit 31 determines whether or not the eccentricity position calculated in the above-described step ST2 is at the timing of the upper portion of the drum 2. When the eccentric position is at the timing of the upper portion of the drum 2, the central control unit 31 moves to step ST9.
<步骤ST9><Step ST9>
在步骤ST9中，中央控制部31执行所谓的制动控制，即，将滚筒2的转数例如减速至100rpm前后，进而使滚筒的转数降低至离心力小于重力的制动转数。在进行了该制动控制之后，中央控制部31移至步骤ST1。即，在该步骤ST9中，作为降低偏心量(M)的控制进行制动控制，即，以检测转数即200rpm或者100rpm前后的控制用转数使滚筒2旋转，然后使滚筒的转数降低至离心力小于重力的制动转数。In step ST9, the central control unit 31 performs so-called brake control, that is, decelerating the number of revolutions of the drum 2 to, for example, 100 rpm, and further reducing the number of revolutions of the drum to a number of brake revolutions in which the centrifugal force is smaller than the gravity. After the brake control is performed, the central control unit 31 proceeds to step ST1. In other words, in this step ST9, the brake control is performed as the control for reducing the eccentric amount (M), that is, the number of revolutions of 200 rpm or 100 rpm is detected to rotate the drum 2, and then the number of revolutions of the drum is lowered. The number of brake revolutions to which the centrifugal force is less than gravity.
<步骤ST10><Step ST10>
在步骤ST10中，中央控制部31判定目前为止经过后述的步骤ST12的次数、换言之，为使滚筒2的旋转停止的滚筒停止次数DS是否为3。如果滚筒停止次数达不到3，则移至步骤ST11。如果滚筒停止次数DS为3，则移至步骤ST13。In step ST10, the central control unit 31 determines whether or not the number of steps ST12 to be described later has elapsed, in other words, whether or not the number of times of stopping the drum DS for stopping the rotation of the drum 2 is three. If the number of times the drum is stopped is less than 3, the process proceeds to step ST11. If the number of times of stopping the drum DS is 3, the process proceeds to step ST13.
<步骤ST11><Step ST11>
在步骤ST11中，中央控制部31将滚筒停止次数DS加1。In step ST11, the central control unit 31 increments the number of drum stops DS by one.
<步骤ST12><Step ST12>
在步骤ST12中，中央控制部31为了变更滚筒2的偏心位置而停止滚筒2的旋转。然后，中央控制部31移至步骤ST1。即，通过在该步骤ST12中停止滚筒2的旋转之后执行步骤ST1再次使滚筒2的转数上升的控制相当于本实施方式的用于降低偏心量(M)的停止控制。In step ST12, the central control unit 31 stops the rotation of the drum 2 in order to change the eccentric position of the drum 2. Then, the central control unit 31 moves to step ST1. In other words, the control for increasing the number of revolutions of the drum 2 by executing the step ST1 after the rotation of the drum 2 is stopped in this step ST12 corresponds to the stop control for reducing the eccentric amount (M) of the present embodiment.
<步骤ST13><Step ST13>
在步骤ST13中，为了避免滚筒2的偏心量(M)达到规定的最高脱水转数，中央控制部31使滚筒2的转数上升至转数低于最高脱水转数的低速脱水转数。在本实施方式中，作为一个例子将最高脱水转数设定为800rpm。在使滚筒2的转数上升至低速脱水转数之后，中央控制部31移至图示A的部位、即步骤ST15。In step ST13, in order to prevent the eccentric amount (M) of the drum 2 from reaching the predetermined maximum number of dehydration revolutions, the central control unit 31 raises the number of revolutions of the drum 2 to a number of low-speed dehydration revolutions in which the number of revolutions is lower than the maximum number of dehydration revolutions. In the present embodiment, the highest dehydration number is set to 800 rpm as an example. After the number of revolutions of the drum 2 is increased to the number of low-speed dehydration revolutions, the central control unit 31 moves to the position of the map A, that is, step ST15.
此处，在本实施方式中，低速脱水转数可以根据滚筒2的偏心量(M)设定为3左右的转数。然后，如上所述，在中央控制部31中，用于确定低速脱水转数的第一大件阈值(γ1)、第二大件阈值(γ2)、第三大件阈值(γ3)与大件偏心量阈值(β)一起存储于未图示的存储器内。Here, in the present embodiment, the number of rotations of the low speed dehydration can be set to a number of revolutions of about 3 in accordance with the eccentric amount (M) of the drum 2. Then, as described above, in the central control portion 31, the first large-piece threshold (γ1), the second large-sized threshold (γ2), the third large-sized threshold (γ3), and the large-sized member for determining the low-speed dehydration revolution number are used. The eccentricity threshold (β) is stored together in a memory (not shown).
具体而言，在本实施方式中，作为一个例子，将大件偏心量阈值(β)与用于确定低速脱水转数的第一大件阈值(γ1)、第二大件阈值(γ2)、第三大件阈值(γ3)的关系设定为使β＝γ1＜γ2＜γ3这一式子成立。Specifically, in the present embodiment, as an example, the large eccentricity amount threshold (β) and the first large piece threshold (γ1) for determining the low speed dehydration number, the second large piece threshold (γ2), The relationship of the third largest threshold (γ3) is set such that β = γ1 < γ2 < γ3 holds.
在滚筒2的转数大于第一大件阈值(γ1)且为第二大件阈值(γ2)以下的情况下，作为一个例子，中央控制部31将低速脱水转数设定为600rpm。In the case where the number of revolutions of the drum 2 is larger than the first large-piece threshold value (γ1) and is equal to or less than the second large-piece threshold value (γ2), the central control unit 31 sets the low-speed dehydration revolution number to 600 rpm as an example.
在滚筒2的转数大于第二大件阈值(γ2)且为第三大件阈值(γ3)以下的情况下，作为一个例子，中央控制部31将低速脱水转数设定为400rpm。In the case where the number of revolutions of the drum 2 is larger than the second large-piece threshold value (γ2) and is equal to or less than the third large-piece threshold value (γ3), the central control unit 31 sets the low-speed dehydration revolution number to 400 rpm as an example.
在滚筒2的转数大于第三大件阈值(γ3)的情况下，作为一个例子，中央控制部31将低速脱水转数设定为200rpm。In the case where the number of revolutions of the drum 2 is larger than the third large-piece threshold (γ3), as an example, the central control unit 31 sets the low-speed dehydration number to 200 rpm.
<步骤ST14><Step ST14>
在步骤ST14中，由步骤ST2检测到的滚筒2的偏心量(M)小于要控制阈值α，因此，中央控制部31判断为能顺利地进行脱水过程，将滚筒2的转数加 速至本实施方式中的最高脱水转数800rpm。In step ST14, the eccentric amount (M) of the drum 2 detected in step ST2 is smaller than the threshold value α to be controlled. Therefore, the central control unit 31 determines that the dehydration process can be smoothly performed, and accelerates the number of revolutions of the drum 2 to the present embodiment. The highest dehydration revolution in the mode is 800 rpm.
<步骤ST15><Step ST15>
在步骤ST15中，中央控制部31判定开始脱水过程后经过的时间是否经过了规定的脱水时间。如果开始脱水过程后经过的时间经过了规定的脱水时间，则中央控制部31结束脱水过程的处理。In step ST15, the central control unit 31 determines whether or not the elapsed time after the start of the dehydration process has passed the predetermined dehydration time. When the elapsed time after the start of the dehydration process has passed the predetermined dehydration time, the central control unit 31 ends the process of the dehydration process.
在从上述步骤ST2经过上述步骤ST14到达该步骤ST15的情况下，上述步骤ST15中的滚筒2的转数为本实施方式中的最高脱水转数800rpm。另一方面，在从上述步骤ST13到达该步骤ST15的情况下，滚筒2的转数为上述的低速脱水转数。如上所述，低速脱水转数根据滚筒2的偏心量(M)为600rpm、400rpm、200rpm中的任一个。When the above step ST14 is passed from the above-described step ST2 to the step ST15, the number of revolutions of the drum 2 in the above-described step ST15 is the highest dehydration number of 800 rpm in the present embodiment. On the other hand, when the process proceeds from step ST13 to step ST15, the number of revolutions of the drum 2 is the above-described low-speed dehydration number. As described above, the low-speed dehydration rotation number is any one of 600 rpm, 400 rpm, and 200 rpm according to the eccentric amount (M) of the drum 2.
也就是说，意味着经过如下过程：在以低速脱水转数到达上述步骤ST15时即使进行多次降低偏心量(M)的上述制动控制、停止，偏心量(M)也不低于大型洗涤物用阈值。然后，在本实施方式中，将根据偏心量(M)设定多个的阈值即第一大件阈值(γ1)、第二大件阈值(γ2)、第三大件阈值(γ3)作为基准，通过各自不同的低速脱水转数即大件洗涤用转数结束所述脱水过程。In other words, it means that the eccentric amount (M) is not lower than the large washing even when the above-described brake control and stop of reducing the eccentric amount (M) are performed a plurality of times at the low speed dehydration number to reach the above step ST15. The threshold is used. Then, in the present embodiment, a plurality of threshold values, that is, a first large-sized threshold (γ1), a second large-sized threshold (γ2), and a third large-sized threshold (γ3) are set as a reference based on the eccentric amount (M). The dehydration process is terminated by the respective different low-speed dehydration revolutions, that is, the number of rotations of the large-piece washing.
如上所述，本实施方式的洗衣机1可靠地检测出处于无法通过控制可靠地降低滚筒2的偏心量(M)的状况，即使处于该状况下也顺利地进行脱水过程，由此会实现有效地避免洗涤时间的延迟。As described above, the washing machine 1 of the present embodiment reliably detects that the eccentric amount (M) of the drum 2 cannot be reliably lowered by the control, and even in this state, the dehydration process is smoothly performed, thereby achieving an effective manner. Avoid delays in washing time.
在本实施方式中，进行作为步骤ST9的制动控制，由此会实现迅速的偏心量(M)的降低。In the present embodiment, the brake control as step ST9 is performed, whereby a rapid decrease in the amount of eccentricity (M) is achieved.
在本实施方式中，进行作为从步骤ST12至步骤ST1的停止控制，由此能更可靠地进行偏心量的降低。In the present embodiment, the stop control from step ST12 to step ST1 is performed, whereby the reduction in the amount of eccentricity can be performed more reliably.
在本实施方式中，执行步骤ST13时，应用按照每一作为大件洗涤物用阈值的第一大件阈值(γ1)、第二大件阈值(γ2)、第三大件阈值(γ3)而不同的大件洗涤用转数即低速脱水转数，结束脱水过程，因此，不管滚筒2内的洗涤物的状况如何，都有效地避免脱水过程的长时间化。In the present embodiment, when step ST13 is executed, the first large piece threshold (γ1), the second large piece threshold (γ2), and the third large piece threshold (γ3) are used for each of the threshold values for the large-sized laundry. The different large-size washing rotation number, that is, the low-speed dehydration rotation number, ends the dehydration process, and therefore, regardless of the state of the laundry in the drum 2, the long-term dehydration process is effectively prevented.
以上，对本发明的一实施方式进行了说明，但各部分的具体结构不仅限于上述的实施方式，可以在不脱离本发明的主旨的范围内进行各种变形。The embodiment of the present invention has been described above, but the specific configuration of each part is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the invention.
例如在上述实施方式中将本发明应用于使滚筒向水平方向开口的类型的洗衣机，当然，也可以将本发明应用于使滚筒向斜上方向开口的斜滚筒式的洗衣机、也具备烘干功能的洗衣干衣机。此外，在上述实施方式中仅公开了通过加速度传感器进行偏心位置、偏心量的检测的方案，但并不否定不借助于该加速度传感器而替换为以往应用的使用电机控制电路的方案、使用机械地检测偏心位置的微动开关的方案、或者并用的方案。此外，加速度传感器的具体方案、偏心位置的具体计算方法这些详细的点在不脱离本发明的主旨的范围内可以进行各种变形。For example, in the above embodiment, the present invention is applied to a washing machine of a type that opens the drum in the horizontal direction. Of course, the present invention can also be applied to a tilting drum type washing machine that opens the drum in the obliquely upward direction, and also has a drying function. Laundry dryer. Further, in the above-described embodiment, only the eccentric position and the eccentricity are detected by the acceleration sensor. However, the use of the motor control circuit without using the acceleration sensor is not negated, and the mechanical control circuit is used. A scheme for detecting a microswitch of an eccentric position, or a scheme for use in combination. In addition, the specific details of the acceleration sensor and the specific calculation method of the eccentric position can be variously modified without departing from the gist of the invention.
附图标记的说明Description of the reference numerals
1：滚筒式洗衣机(洗衣机)；1: drum type washing machine (washing machine);
1b：洗涤筒；1b: washing tub;
12：加速度传感器；12: acceleration sensor;
14：滚筒位置检测装置(接近传感器)；14: roller position detecting device (proximity sensor);
2：滚筒；2: roller;
35：偏心检测单元(不平衡量检测部)；35: eccentricity detecting unit (unbalance detecting unit);
36：偏心检测单元(不平衡位置检测部)；36: eccentricity detecting unit (unbalanced position detecting unit);
β：大型洗涤物用阈值；β: a threshold for large laundry;
γ1：大型洗涤物用阈值(第一大件阈值)；Γ1: threshold for large laundry (first large threshold);
γ2：大型洗涤物用阈值(第二大件阈值)；Γ2: threshold for large laundry (second largest threshold);
γ3：大型洗涤物用阈值(第三大件阈值)；Γ3: threshold for large laundry (third largest threshold);
M：偏心量；M: eccentricity;
ST9：降低偏心量的控制(停止控制)；ST9: control to reduce the amount of eccentricity (stop control);
ST12：降低偏心量的控制(制动控制)；ST12: Control to reduce the amount of eccentricity (brake control);
t1：时间差；T1: time difference;
ps：脉冲信号。Ps: pulse signal.

Claims (7)

  1. 一种滚筒式洗衣机，其具有：有底筒状的滚筒，构成为能绕水平方向或倾斜方向延伸的轴线旋转；以及偏心检测单元，检测所述滚筒内的偏心量以及偏心位置，在所述滚筒内的偏心量超过规定的阈值时，进行使偏心量降低的控制，其特征在于，A drum type washing machine having: a bottomed cylindrical drum configured to be rotatable about an axis extending in a horizontal direction or an oblique direction; and an eccentricity detecting unit that detects an eccentric amount and an eccentric position in the drum, When the amount of eccentricity in the drum exceeds a predetermined threshold value, control for reducing the amount of eccentricity is performed, and is characterized in that
    在脱水过程中，During the dehydration process,
    当偏心量大于大型洗涤物用阈值时，判断为是起因于所述滚筒内存在大型洗涤物，而进行降低偏心量的控制，When the amount of eccentricity is larger than the threshold value for the large laundry, it is determined that the large amount of laundry is present in the drum, and the control for reducing the amount of eccentricity is performed.
    即使进行一次或者多次使所述偏心量降低的控制，如果所述偏心量也不低于所述大型洗涤物用阈值，则以低于所述脱水过程中设定的规定的恒定转数的大件洗涤用转数，使所述滚筒旋转。Even if the control for reducing the eccentricity is performed one or more times, if the eccentric amount is not lower than the threshold for the large laundry, it is lower than a prescribed constant number of revolutions set in the dehydration process. The large-sized washing uses a number of revolutions to rotate the drum.
  2. 根据权利要求1所述的滚筒式洗衣机，其特征在于，A drum type washing machine according to claim 1, wherein
    即使进行多次使所述偏心量降低的控制，如果所述偏心量也不低于所述大型洗涤物用阈值，则以低于所述脱水过程中设定的规定的恒定转数的大件洗涤用转数结束脱水过程。Even if the control for lowering the eccentric amount is performed a plurality of times, if the eccentric amount is not lower than the threshold value for the large laundry, a large piece lower than a predetermined constant number of revolutions set in the dehydration process is used. The washing ends the dehydration process with the number of revolutions.
  3. 根据权利要求1所述的滚筒式洗衣机，其特征在于，A drum type washing machine according to claim 1, wherein
    使所述偏心量降低的控制是制动控制，即，以在离心力和重力平衡的转数附近且高的转数即控制用转数使所述滚筒旋转，然后使滚筒的转数降低至离心力小于重力的制动转数。The control for reducing the amount of eccentricity is brake control, that is, the drum is rotated by a high number of revolutions, that is, a number of revolutions in the vicinity of the number of revolutions in which the centrifugal force and the gravity are balanced, and then the number of revolutions of the drum is reduced to centrifugal force. Brake revolutions less than gravity.
  4. 根据权利要求1所述的滚筒式洗衣机，其特征在于，A drum type washing machine according to claim 1, wherein
    使所述偏心量降低的控制是停止控制，即，停止所述滚筒的旋转，然后再次使滚筒旋转。The control to reduce the amount of eccentricity is to stop the control, that is, to stop the rotation of the drum, and then to rotate the drum again.
  5. 根据权利要求1所述的滚筒式洗衣机，其特征在于，A drum type washing machine according to claim 1, wherein
    所述大件洗涤物用阈值根据偏心量设定多个，通过按照每一所述大件洗涤物用阈值而不同的大件洗涤用转数结束所述脱水过程。The large-sized laundry is set in plural according to the eccentricity by the threshold value, and the dehydration process is ended by the number of rotations of the large-sized washings which are different for each of the large-sized laundry thresholds.
  6. 根据权利要求1～5中任一项所述的滚筒式洗衣机，其特征在于，The drum type washing machine according to any one of claims 1 to 5, characterized in that
    所述偏心检测单元基于检测所述滚筒的振动的加速度传感器、根据所述滚筒的旋转发出脉冲信号的滚筒位置检测装置和通过所述加速度传感器检测到的所述滚筒的振动以及从所述滚筒位置检测装置发出的脉冲信号，检测所述滚筒内的偏心量以及偏心位置，The eccentricity detecting unit is based on an acceleration sensor that detects vibration of the drum, a drum position detecting device that emits a pulse signal according to rotation of the drum, and vibration of the drum detected by the acceleration sensor and from the drum position Detecting a pulse signal from the device to detect an amount of eccentricity and an eccentric position in the drum,
    运算表示所述滚筒的至少旋转一圈中的加速度的时间变化的信息中的任意的时间点与所述脉冲信号的时间差，根据该时间差与所述滚筒的转数的关系计算出所述滚筒内的偏心位置。Calculating a time difference between an arbitrary time point of the information indicating the temporal change of the acceleration in at least one revolution of the drum and the pulse signal, and calculating the relationship between the time difference and the number of revolutions of the drum The eccentric position.
  7. 根据权利要求1所述的滚筒式洗衣机，其特征在于，A drum type washing machine according to claim 1, wherein
    所述偏心检测单元通过控制对所述滚筒进行驱动的电机的电机控制装置来检测偏心位置以及偏心量。The eccentricity detecting unit detects an eccentric position and an eccentric amount by controlling a motor control device of a motor that drives the drum.
PCT/CN2017/118955 2016-12-27 2017-12-27 Front-loading washing machine WO2018121598A1 (en)

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