WO2019100695A1 - Lave-linge à tambour - Google Patents

Lave-linge à tambour Download PDF

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Publication number
WO2019100695A1
WO2019100695A1 PCT/CN2018/090760 CN2018090760W WO2019100695A1 WO 2019100695 A1 WO2019100695 A1 WO 2019100695A1 CN 2018090760 W CN2018090760 W CN 2018090760W WO 2019100695 A1 WO2019100695 A1 WO 2019100695A1
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WO
WIPO (PCT)
Prior art keywords
drum
washing machine
eccentric position
control unit
eccentric
Prior art date
Application number
PCT/CN2018/090760
Other languages
English (en)
Chinese (zh)
Inventor
川口智也
佐藤弘树
北川宏之
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.)
Filing date
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 CN201880075438.2A priority Critical patent/CN111373087A/zh
Publication of WO2019100695A1 publication Critical patent/WO2019100695A1/fr

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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
    • D06F2105/02—Water supply
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a drum type washing machine having a dehydrating function.
  • washing machine such as a general household or a laundromat
  • a washing machine having a washing and dehydrating function and a washing and dehydrating drying function.
  • the washing machine having the dehydrating function generates vibration and noise in the drum due to the offset of the laundry. Further, if the offset of the laundry is large, the 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 user stops the operation of the washing machine and eliminates the offset of the laundry by manual operation.
  • Patent Document 1 Japanese Patent Laid-Open No. Hei 9-290089
  • Patent Document 2 Japanese Laid-Open Patent Publication No. 2009-82558
  • Patent Document 3 is expected to solve the problems that cannot be solved in the two patent documents. Then, it is currently desired to provide a further specific control flow, specific configuration for actively solving the problem.
  • the present invention has been made to solve the conventional problems. According to the present invention, it is possible to provide a drum type washing machine capable of reliably reducing the imbalance of the washing tub during the dehydrating process and rapidly performing the dehydration process even if there is a bias of the laundry in the washing tub, thereby being shortened Washing time.
  • the drum type washing machine of the present invention is characterized in that it has an inlet port seal, an outer cylinder and a frame for water sealing, and a drum position detecting device that generates a signal every time the drum rotates; a single acceleration sensor is used for detecting the outside
  • the eccentric position detecting means detects the eccentric position in the front-rear direction, the up-and-down direction, and the left-right direction of the drum, and the drum-type washing machine calculates the eccentric position in the up-down direction and the left-right direction in consideration of the eccentric position of the drum in the front-rear direction.
  • front-rear direction refers to a direction from the opening toward the rear wall in the horizontal direction when the opening of the washing machine is viewed from the front view
  • up-and-down direction is synonymous with the vertical direction
  • left-right direction means The direction perpendicular to the front-rear direction in the horizontal direction.
  • the drum type washing machine is characterized in that the eccentric position detecting means measures the difference between the motor rotation speed during the constant speed rotation of the drum, the motor current change value, and the amplitude value from the vertical direction and the left and right direction of the acceleration sensor.
  • the eccentric position detecting means in the front-rear direction of the drum is measured based on the difference between the amplitude values of the vertical direction and the left-right direction from the acceleration sensor and the amplitude values of the front-rear direction in the constant-speed rotation of the drum.
  • the drum type washing machine is characterized in that the eccentric position detecting means in the front-rear direction of the drum is measured in accordance with the difference in the rate of change of the phase with the increase in the number of revolutions.
  • the drum type washing machine of the present invention comprises: a frame; an outer cylinder fixed to the frame; an inlet seal, the outer cylinder and the frame are connected for water sealing; and the drum is rotatably supported in the outer cylinder, the drum type washing machine
  • the utility model is characterized in that: a drum position detecting device, a signal is generated once every one rotation of the drum; a single acceleration sensor is used for detecting the vibration of the outer cylinder; and an eccentric position detecting unit detects the eccentricity in the front-rear direction, the up-and-down direction and the left-right direction of the drum. In the position, the drum type washing machine calculates the eccentric position in the up and down direction and the left and right direction in consideration of the eccentric position of the drum in the front-rear direction.
  • the eccentric position detecting means performs the difference between the motor rotation speed change value in the constant speed rotation of the drum, the motor current change value, the amplitude value from the left and right direction of the acceleration sensor, and the difference between the amplitude values in the up and down direction. Determination.
  • the amplitude value in the left-right direction and the amplitude value in the vertical direction can be measured with higher accuracy.
  • the eccentric position detecting means in the front-rear direction of the drum performs the amplitude value from the left-right direction of the acceleration sensor during the constant-speed rotation of the drum and the difference between the amplitude value in the vertical direction and the amplitude value in the front-rear direction. Determination.
  • the amplitude value of the front-back direction can be measured with higher precision.
  • the drum type washing machine of the present invention is characterized in that the eccentric position detecting means in the front-rear direction of the drum is measured in accordance with the difference in the rate of change of the phase with the increase in the number of revolutions.
  • the amplitude value of the front-back direction can be measured with higher precision.
  • Fig. 1 is a view schematically showing a cross section 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 washing machine 1.
  • FIG. 3 is a view for explaining a control flow in the dehydration process of the washing machine 1.
  • FIG. 4 is a parameter table showing the water supply valve 62 that is opened.
  • FIG. 5 is a schematic view showing an eccentric position in the drum 2.
  • Fig. 6 is a schematic view showing a state in which the inside of the drum 2 is in a facing load.
  • FIG. 7 is a graph showing an outline of a dehydration process of the washing machine 1 of the present embodiment.
  • Fig. 8 is a flow chart showing a control flow in the dehydration process of the washing machine 1.
  • Fig. 9 is a flowchart showing an eccentric position adjustment process.
  • Fig. 10 is a schematic flow chart showing the main process of dehydration.
  • Figure 11 is a flow chart showing the main process of dehydration.
  • Fig. 12 is a schematic flow chart showing a process of starting determination.
  • Fig. 13 is a schematic flow chart showing the processing of the water injection process.
  • Fig. 14 is a schematic flow chart showing the processing of the water injection process.
  • Fig. 15 is a schematic flow chart showing the processing of the water injection process.
  • Fig. 16 is a graph showing the relationship between the acceleration and the eccentric position N.
  • Fig. 17 is a graph showing the relationship between the difference between the left and right amplitudes and the front and rear amplitudes and the amount of eccentricity.
  • Fig. 18 is a graph showing the relationship between the temporary eccentric position ⁇ 1 and the formal eccentric position ⁇ 2 and the number of revolutions.
  • 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 suitably used, for example, in a laundromat or a home.
  • the washing machine 1 includes a washing machine body 1a as a frame, and the washing tub 1b includes an outer tube 3 having an axis S1 extending substantially horizontally and The drum 2; the water injection device 1c has a water receiving assembly 5 and a nozzle assembly 6; a driving device 40; and only the control unit 30 shown in Fig. 2.
  • the front end of the outer cylinder 3 is indirectly supported by the washing machine main body 1a as a frame via an inlet seal (hereinafter referred to as a seal PK) for water sealing.
  • the seal PK has, for example, a synthetic resin having elasticity as a main body, and the elastic coefficient determined by the material, shape, hardness, and the like of the seal is stored in advance in the central control unit 31.
  • the washing machine body 1a shown in Fig. 1 has a substantially rectangular parallelepiped shape.
  • An opening 11 for taking out/putting laundry with respect to the drum 2 is formed on the front surface 10a of the washing machine main body 1a, and an opening and closing cover 11a capable of opening and closing the opening 11 is attached.
  • the main body 1a of the washing machine has a state in which its front surface 10a faces slightly upward, whereby the opening 11 for taking out/putting the laundry with respect to the drum 2 is formed to face obliquely upward, and the user is diagonally upward.
  • the opening and closing cover 11a that can open and close the opening 11 is opened and closed. That is, the washing machine 1 of the present embodiment is referred to as a so-called inclined drum type automatic washing machine in which the washing tub 1b is attached in the oblique direction.
  • the outer cylinder 3 is a bottomed cylindrical member disposed inside the washing machine main body 1a, and can store washing water therein.
  • an acceleration sensor 12 capable of detecting accelerations in three directions of the vertical direction, the horizontal direction, and the front-rear direction is attached to the outer peripheral surface 3a of the outer cylinder 3.
  • 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 the laundry inside, and has a plurality of water-passing holes 2b on its wall surface 2a (refer to 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 extends toward the bottom 2c of the drum 2, and applies a driving force to the drum 2 to rotate the drum 2.
  • a proximity switch 14 capable of detecting the passage of the mark 15a formed on the pulley 15 is provided in the vicinity of one of the pulleys 15. Then, in the present embodiment, the proximity switch 14 corresponds to a drum position detecting device.
  • each of the lifting ribs 7 extends from the proximal end portion 2c of the drum 2 across the distal end portion in the axial direction of the drum 2, and is formed to protrude from the inner peripheral surface 2a1 of the drum 2 toward the axis S1. Further, each of the lifting ribs 7 is hollow.
  • the water receiving unit 5 is configured such that the water conduit 5a overlaps three layers in the radial direction, for example, along the axis S1 of the drum 2, and is fixed to the inner peripheral surface 2a1 of the drum 2 as shown in FIG.
  • the water conduit 5a is provided in the same number as the lifting rib 7, and a water passage path through which the adjustment water W flows to any of the lifting ribs 7 is formed inside. Then, as shown in FIG. 1, the communication member 5a1 is connected to the inside of the lifting rib 7, and the adjustment water W is supplied from the water receiving unit 5.
  • Such a water receiving unit 5 and the lifting ribs 7 are respectively connected by the communicating member 5a1.
  • the nozzle assembly 6 separately injects the adjustment water W into such a water conduit 5a.
  • the nozzle assembly 6 has three water injection nozzles 6a and water supply valves 62a, 62b, 62c respectively connected to the water injection nozzles 6a.
  • the water injection nozzles 6a are provided in the same number as the water conduit 5a, and are disposed at positions where water can be injected into the respective water conduits 5a.
  • tap water is used as the adjustment water W.
  • the lifting rib 7 has a retention portion 71 for retaining the adjustment water W injected from the tip end 1d side of the washing tub 1b by the water injection device 1c through the centrifugal force during the dehydration process, and an outlet portion 72 for supplying the adjusted water W from the washing tub
  • the base end 1e side of 1b is discharged.
  • 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 the control unit 30 is connected to a memory 32 that stores values detailed below that are lower than the resonance point CP of the drum 2.
  • the microcomputer executes the program stored in the memory 32 by the control unit 30, thereby performing a predetermined operation operation, and temporarily storing the data or the like used when the program is executed in the memory 32.
  • 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 unit (motor control circuit) 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 unit 34 as a control element in real time.
  • 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.
  • the drum 2 is calculated in the unbalance amount detecting portion 35 based on the acceleration amounts in the up-down direction, the left-right direction, and the front-rear direction obtained from the acceleration sensor 12.
  • the eccentric amount (M) is output to the unbalance amount determining unit 37.
  • the unbalanced position detecting unit 36 calculates an angle in the unbalanced direction based on the signal indicating the position of the mark 15a input from the proximity switch 14, and outputs an unbalanced position signal as the eccentric position (N) to the water injection control unit 38.
  • the angle of the unbalanced direction means the relative angle with respect to the lifting rib 7 in the circumferential direction of the axis S1.
  • three lifting ribs 7 (A), 7 (B), and 7 (C) and eccentric positions which are arranged at equal angular intervals around the axis S1 are shown as an example.
  • the relative angle of the lifting ribs 7 (B) and 7 (C) is set to 0 °.
  • the water injection control unit 38 determines the lifting rib 7 of the water supply based on the control program stored in advance. And its water supply. Then, the water injection control unit 38 opens the selected water supply valves 62a, 62b, and 62c to start the injection of the adjustment water W.
  • the water injection control unit 38 starts to inject the adjustment water W from the water injection nozzle 6a selected based on the calculation of the eccentric amount (M) to the water conduit 5a of the water receiving unit 5.
  • the eccentric amount (M) becomes equal to or lower than the predetermined reference, the injection of the adjustment water W is stopped.
  • the laundry mass LD (X) which is the cause of eccentricity is located between the lifting rib 7 (B) of the drum 2 and the lifting rib 7 (C)
  • water injection is performed.
  • the control unit 38 performs the following control to supply the adjustment water W to the lifting rib 7 (A).
  • the water injection control unit 38 performs the following control to supply the adjustment water W to both the lift rib 7 (B) and the lift rib 7 (C). .
  • the central control unit 31 opens the water supply valve X and the water supply valve Z.
  • the eccentric position (N) of the lifting rib 7 to be water-injected is specifically designated by equally dividing the drum 2 in the circumferential direction.
  • the description of the "eccentric position (N)" in the present embodiment means any of the temporarily calculated temporary eccentric position ( ⁇ 1, not shown) and the officially determined official eccentric position ( ⁇ 2, not shown). The concept of one or both parties.
  • the temporary eccentric position ( ⁇ 1) and the formal eccentric position ( ⁇ 2) are described in detail later.
  • the region Y in which the eccentric position (N) of the lifting rib 7 to be water-injected is specified is specifically referred to as the regions (P(A)), (P(B)), and (P(C)).
  • the region Y of the eccentric position (N) required to eliminate the eccentricity means the regions (P(AB)), (P(BC)), and (P(CA)).
  • the angle centered on the axis S1 of the regions (P(A)), (P(B)), and (P(C)) is set to 20°
  • the region (P(AB)), ( The angle at which the axis S1 of P(BC)) and (P(CA)) is centered is set to 100°.
  • the lifting rib 7 corresponding to the character not described in the ABC is the lifting rib 7 closest to the eccentric position (N).
  • the acceleration sensor 12 is a three-axis sensor capable of detecting accelerations in the vertical direction, the horizontal direction, and the front-rear direction.
  • FIG. 7 is a graph showing an outline of a dehydration process of the washing machine 1 of the present embodiment.
  • the vertical axis represents the rotational speed of the drum 2
  • the horizontal axis represents time.
  • 10, and 11 are flowcharts showing the main outline of the dehydration process.
  • Fig. 8 shows the pre-dehydration process in the first half of the dehydration process
  • Fig. 10 and Fig. 11 show the main dehydration process as a process after the pre-dehydration process.
  • the central control unit 31 when the central control unit 31 receives an input signal from a dehydration button (not shown) or a signal indicating that the dehydration process should be started during the washing mode operation, the central control unit 31 proceeds to step SP1 to start the pre-dehydration process.
  • step SP1 the central control unit 31 raises the rotation of the drum 2 to a first rotation speed (N1) lower than the resonance point CP of the drum 2 after the drum 2 is loosely reversed.
  • the process proceeds to step SP2.
  • the first number of revolutions (N1) is set to be 180 rpm lower than about 300 rpm which is the resonance point CP of the drum 2.
  • step SP2 the central control unit 31 performs control of the eccentric amount (M) and the eccentric amount/temporary eccentric position measurement on the eccentricity detecting unit based on the acceleration signal supplied from the acceleration sensor 12.
  • the central control unit 31 calculates the eccentric amount (M) for each direction based on, for example, the acceleration signals in the up-down direction, the left-right direction, and the front-rear direction obtained from the acceleration sensor 12.
  • the value used in the present control is an eccentric amount (M) calculated based on the eccentric amount (M) in the front-rear direction and the acceleration signal in either the up-down direction or the left-right direction among the calculated values in the three directions.
  • the central control unit 31 compares the calculated eccentricity (M) with the first eccentric amount threshold (ma) stored in the memory 32, and performs a start determination, that is, whether or not M ⁇ ma is established. When it is determined that M ⁇ ma is satisfied, the central control unit 31 proceeds to step SP4, and when it is determined that M ⁇ ma is not satisfied, the process proceeds to step SP5.
  • the first eccentric amount threshold (ma) is a threshold value imaginary: the offset of the laundry is so large that it is difficult to reduce the eccentric amount (M) to enable the drum 2 even if the adjustment water W is supplied to the lifting rib 7 The speed of the rise rises to the extent of the dehydration steady state speed. In other words, in the case of proceeding to step SP5, the eccentric amount (M) is so large that it is difficult to complete the dehydration process even if the adjustment water W is supplied to the lifting rib 7.
  • the first eccentricity threshold (ma) is further explained.
  • the acceleration sensor 12 applies an acceleration sensor that can detect accelerations in the vertical direction, the horizontal direction, and the front-rear direction, respectively.
  • step SP4 when the eccentric amount (M) calculated in step SP2 is smaller than the first eccentric amount threshold (ma) set in the eccentric position, the central control unit 31 increases the rotational speed of the drum 2. In addition, the central control unit 31 continues to perform the control of the eccentric amount/temporary eccentric position measurement of the present embodiment while increasing the number of revolutions of the drum 2.
  • “continuing” is not necessarily limited to a scheme that is continuously performed continuously. Of course, it is also possible to intermittently execute the control of the eccentric amount/temporary eccentric position measurement of the present embodiment when the number of revolutions of the drum 2 is increased to a plurality of rotation speeds until the dehydration steady-state rotation speed is reached.
  • step SP5 the central control unit 31 stops the rotation of the drum 2 or lowers the number of revolutions of the drum 2 to a rotational speed greater than the centrifugal force, so that the so-called eccentric position adjustment process of the laundry in the vertical direction agitating drum 2 is performed. control. Thereafter, the process returns to step SP1.
  • the solid line indicates the behavior of not rotating the lifting rib 7, and the rotation speed of the drum 2 reaches the rotation speed at the time of dehydration steady-state rotation. Further, in Fig.
  • the imaginary line on the upper side indicates the behavior of the rotational speed when the rotational speed reaches the dehydration steady-state rotational speed only after the water is applied to the lifting rib 7, and the rotational speed of the drum 2 in step SP5 is indicated by the lower imaginary line. behavior.
  • step SP3 When it is judged by the above-described step SP3 that the eccentric amount (M) is so large that it is difficult to reduce, the rotation of the drum 2 is stopped (step SP51). Thereafter, the drum 2 is rotated at a rotation speed at which the centrifugal force is lowered, and the laundry in the drum 2 is stirred to change the eccentric amount (M) (step SP52).
  • step SP4 the control of the main dehydration process after step SP4 will be specifically shown and illustrated in FIG. 10 in FIG.
  • step SP6 the central control unit 31 determines whether or not the eccentric amount (M) calculated in step SP2 shown in FIG. 8 is larger than the water injection eccentricity threshold value set in advance by the number of rotations of the drum 2.
  • the central control unit 31 does not perform water injection into the lifting rib 7, and moves to step SP7.
  • the central control unit 31 performs water injection into the lifting rib 7 and then moves to SP7 after the water injection.
  • step SP7 the central control unit 31 increases the number of revolutions of the drum 2 at a predetermined acceleration.
  • step SP8 when the rotation speed of the drum 2 reaches the dehydration steady-state rotation speed, the central control unit 31 maintains the state to maintain the rotation speed of the drum 2 until the end of the dehydration process.
  • the dehydration steady-state rotation speed is set to 800 rpm.
  • Fig. 11 is a flow chart showing a specific process of the main dehydration process of the present embodiment.
  • step SP71 the central control unit 31 increases the rotational speed by 20 rpm per second until the rotational speed of the drum 2 reaches 400 rpm.
  • the central control unit 31 executes step SP6 in parallel while performing step SP71.
  • step SP72 the central control unit 31 determines whether or not the rotational speed of the drum 2 has reached 400 rpm. If the rotation speed does not reach 400 rpm, the central control unit 31 shifts to step SP71. When the rotation speed reaches 400 rpm, the central control unit 31 shifts to step SP73.
  • step SP73 the central control unit 31 increases the rotational speed by 5 rpm per second until the rotational speed of the drum 2 reaches 600 rpm.
  • the central control unit 31 executes step SP6 in parallel while performing step SP72.
  • step SP74 the central control unit 31 determines whether or not the rotational speed of the drum 2 has reached 600 rpm. If the number of revolutions does not reach 600 rpm, the central control unit 31 shifts to step SP73. When the rotation speed reaches 600 rpm, the central control unit 31 shifts to step SP75.
  • the acceleration when the rotation speed of the drum 2 is raised to 400 to 600 rpm is lower than the other rotation regions because the amount of water dehydrated from the laundry is larger than the other rotation regions in the rotation region, so that unnecessary noise generated by the dehydrated water is generated. reduce.
  • step SP72 the central control unit 31 increases the rotational speed by 20 rpm per second until the rotational speed of the drum 2 reaches 800 rpm.
  • the central control unit 31 executes step SP6 in parallel while performing step SP72.
  • step SP76 the central control unit 31 determines whether or not the rotational speed of the drum 2 has reached 800 rpm. If the number of revolutions does not reach 800 rpm, the central control unit 31 shifts to step SP75. When the number of revolutions reaches 800 rpm, the central control unit 31 shifts to step SP8.
  • step SP8 when the number of rotations of the drum 2 reaches 800 rpm as the dehydration steady-state rotation speed, the central control unit 31 maintains the state to continue the dehydration process, and after confirming that the predetermined time has elapsed, the washing is ended.
  • the central control unit 31 rotates the drum 2 at the dehydration steady-state rotational speed for a predetermined time to perform the dehydration treatment, similarly to the dehydration process in the normal washing. After that, the dehydration treatment ends. Then, the dehydration is finished, and the deceleration of the drum 2 is started.
  • the centrifugal force is less than the gravitational acceleration, the adjustment water W in the lifting rib 7 flows out to perform drainage.
  • step SP6 as the water injection step and the step SP7 as the rotation speed increasing step are repeated until the rotation speed of the drum 2 reaches the dehydration steady-state rotation speed.
  • Fig. 12 is a flow chart showing an embodiment of the start determination. The start determination will be described below.
  • step SP31 the central control unit 31 selects the eccentric amount (M) indicating a large value among the eccentric amount Mx in the left-right direction and the eccentric amount Mz in the vertical direction determined in step SP25.
  • the selected eccentric amount (M) is referred to as the eccentric amount Mxz.
  • step SP32 the central control unit 31 determines whether or not the eccentric amount Mxz is larger than the threshold M_xz which is the first eccentric amount threshold (ma). If the eccentric amount Mxz is smaller than the threshold value M_xz, the central control unit 31 shifts to step SP33. If the eccentricity amount Mxz is larger than the threshold value M_xz, the central control unit 31 determines that the eccentricity amount Mxz cannot be started, and proceeds to step SP5 to perform the eccentricity amount adjustment processing.
  • step SP33 the central control unit 31 determines whether or not the eccentric amount My in the front-rear direction is larger than the threshold M_y which is the first eccentric amount threshold (ma). If the eccentric amount My is smaller than the threshold value M_y, the central control unit 31 determines that it is possible to start. In this case, the number of revolutions of the drum 2 is increased. If the eccentric amount My is larger than the threshold M_y, the central control unit 31 determines that the eccentricity amount 31 cannot be started, and proceeds to step SP5 to perform the eccentricity amount adjustment processing.
  • M_y the first eccentric amount threshold
  • step SP6 the processing of the pre-dehydration process during the dehydration process is completed. Thereafter, the processing of the main dehydration process after the step SP6 will be described.
  • step SP7 and step SP8 has been described, and therefore, the specific processing of step SP6, that is, the water filling process will be mainly described.
  • the washing machine 1 of the present embodiment is characterized in that it has an inlet port seal PK, an outer cylinder and a washing machine body 1a as a frame for water sealing, a plurality of lifting ribs 7 as a hollow balancer, and a water injection device.
  • the proximity switch 14 serves as a hollow balancer position detecting device in the drum, and generates a signal every rotation of the drum; a single acceleration sensor 12 for detecting vibration of the outer cylinder; and a central control unit 31.
  • the eccentric position detecting means detects the eccentric position N in the front-rear direction, the vertical direction, and the left-right direction of the drum 2, and calculates the vertical difference and the left-right direction in consideration of the phase difference caused by the difference between the eccentric positions N of the front and rear direction of the drum 2.
  • the eccentric position N is the eccentric position N in the front-rear direction, the vertical direction, and the left-right direction of the drum 2, and calculates the vertical difference and the left-right direction in consideration of the phase difference caused by the difference between the eccentric positions N of the front and rear direction of the drum 2.
  • step SP602 the central control unit 31 measures the amplitude in the front-rear direction based on the signal from the acceleration sensor 12. After the amplitude in the front-rear direction is measured, the process proceeds to step SP603.
  • step SP603 the central control unit 31 measures the amplitudes in the vertical direction and the horizontal direction based on the signal from the acceleration sensor 12. After the amplitudes in the vertical direction and the horizontal direction are measured, the process proceeds to step SP604.
  • the central control unit 31 determines the actual eccentric position N in the vertical direction and the horizontal direction based on the amplitude in the front-rear direction, the vertical direction, and the amplitude in the left-right direction.
  • the eccentric position N in the vertical direction and the horizontal direction is calculated in consideration of the phase difference caused by the difference in the eccentric position N of the drum 2 in the front-rear direction.
  • the relationship between the difference between the eccentric position N in the front-rear direction and the eccentric position N in the vertical direction and the horizontal direction is stored in the memory 32 as a map so that the central control unit 31 can read out .
  • a scheme thereof is shown.
  • the central control unit 31 as the eccentric position detecting means uses the change value of the motor rotational speed of the motor 10 during the constant-speed rotation of the drum 2, the motor current change value, and the amplitude value from the vertical direction of the acceleration sensor 12, The amplitude of the direction is used to measure the amplitude in the front-rear direction.
  • step SP602a the central control unit 31 detects a change in the motor rotation speed. When the change is detected, the process proceeds to step SP602a.
  • step SP602b the central control unit 31 detects a difference between the change value of the motor current and the amplitude value in the vertical direction and the amplitude value in the horizontal direction. Then, based on the difference, the amplitude in the front-rear direction is determined.
  • FIG. 16 is a graph showing the relationship between the acceleration obtained by the acceleration sensor 12 and the pulse signal ps obtained by the proximity switch 14.
  • the temporary eccentric position ⁇ 1 is calculated based on the time difference t1 between the maximum value (Ymax) of the acceleration in the left-right direction obtained by the acceleration sensor 12 and the pulse signal ps.
  • a scheme in which the temporary eccentric position ⁇ 1 is calculated from the maximum value (Ymax) and the minimum value (Ymin) of the acceleration is shown as an example of the present invention.
  • the temporary eccentric position ⁇ 1 may be calculated from any one or a plurality of values of the acceleration zero point, the maximum value of the acceleration (Ymax), and the minimum value (Ymin). Further, the temporary eccentric position ⁇ 1 may be calculated as described above based on the acceleration in the vertical direction and the front-rear direction.
  • the change value of the motor current if it is written as a graph, it has a curve having an amplitude as shown in the graph showing the behavior of the acceleration.
  • the amplitude is smaller than that of the eccentricity.
  • the change value of the motor current is substantially the same amplitude amount regardless of whether the eccentricity position is on the front side or the rear side.
  • the acceleration sensor 12 is provided near the front end of the drum 2. Therefore, the amplitudes of the vertical direction and the horizontal direction detected by the acceleration sensor 12 are located in the vicinity of the acceleration sensor 12, that is, on the front side, and in the case of the rear side of the drum 2, the amplitudes in the vertical direction and the horizontal direction. Become smaller.
  • the amplitude in the front-rear direction tends to be larger than the case where the eccentricity is located on the front side of the drum 2. Thereby, it is possible to determine which position in the front-rear direction the eccentricity is located.
  • the central control unit 31 uses the amplitude value from the longitudinal direction of the acceleration sensor 12 and the amplitude value in the vertical direction/left-right direction. The difference between the amplitude values is used to measure the amplitude in the front-rear direction, that is, the eccentric position N in the front-rear direction.
  • step SP602c the central control unit 31 detects the amplitude value in the vertical direction and the amplitude value in the horizontal direction by the acceleration sensor 12. After the amplitude value in the vertical direction and the amplitude value in the horizontal direction are detected, the process proceeds to step SP602d.
  • step SP602d the central control unit 31 detects the amplitude value in the front-rear direction by the acceleration sensor 12.
  • step SP602e the central control unit 31 determines the eccentric position N in the front-rear direction based on the amplitude value from the vertical direction of the acceleration sensor 12 and the difference between the amplitude value in the left-right direction and the amplitude value in the front-rear direction during the constant-speed rotation of the drum.
  • FIG. 17 is a vertical value and a left-right direction when the eccentricity of the drum 2 is 220 rpm and the eccentricity is located at the front (front side), the center, and the rear (rear side), and the eccentricity of the weight is shown.
  • the position in the front-rear direction of the eccentricity and the amount of eccentricity can be estimated.
  • the eccentric position detecting means in the front-rear direction of the drum 2 measures the eccentric position N in the front-rear direction in accordance with the difference in the rate of change of the phase with the increase in the number of revolutions.
  • FIG. 18 is a graph showing the temporary eccentric position ⁇ 1 detected based on the acceleration in the front-rear direction in the acceleration sensor 12 and the official eccentric position ⁇ 2 as the actual eccentric position.
  • the vertical axis represents the eccentric position (angle) in the up and down direction and the left and right direction
  • the horizontal axis represents the number of revolutions of the drum 2.
  • the temporary eccentric position ⁇ 1 collectively shows the temporary eccentric position ⁇ 1 (front side) in the case where the eccentric position is located on the front side and the temporary eccentric position ⁇ 1 (rear side) in the case where the eccentric position is located on the rear side.
  • the behavior of the temporary eccentric position ⁇ 1 (rear side) rapidly changes (rises in the graph) in the vicinity of a predetermined number of revolutions such as 350 rpm during the rotation. By detecting this behavior, it is also estimated that the eccentric position is on the back side.
  • the drum type washing machine 1 of the present embodiment includes the inlet port seal PK, the outer cylinder 3 and the washing machine body 1a as a frame for water sealing, and the proximity sensor 14 as the drum position detecting device.
  • a signal is generated; a single acceleration sensor 12 for detecting the vibration of the outer cylinder 3; and a central control unit 31 as an eccentric position detecting unit for detecting the front-rear direction, the up-and-down direction, and the left-right direction of the drum 2.
  • the eccentric position N is calculated by considering the eccentric position N of the front and rear direction of the drum 2, and calculating the eccentric position N in the vertical direction and the horizontal direction.
  • the plurality of acceleration sensors 12 are not used, and the eccentric position N in the vertical direction and the horizontal direction can be accurately measured regardless of the eccentric position N of the drum 2 in the front-rear direction.
  • the central control unit 31 as the eccentric position detecting means uses the change value of the rotational speed of the motor 10 during the constant speed rotation of the drum 2, the current change value of the motor 10, and the left and right from the acceleration sensor 12. The difference between the amplitude values was measured.
  • the drum type washing machine 1 of the present embodiment can measure the left and right amplitude values with higher accuracy.
  • the central control unit 31 as the eccentric position detecting means in the front-rear direction of the drum 2 has an amplitude value from the vertical direction of the acceleration sensor 12 and an amplitude value in the left-right direction in accordance with the constant-speed rotation of the drum 2. The difference was measured from the amplitude value in the front-rear direction.
  • the drum type washing machine 1 of the present embodiment can measure the amplitude value in the front-rear direction with higher accuracy.
  • the drum type washing machine 1 of the present embodiment is characterized in that the central control unit 31 as the eccentric position detecting means in the front-rear direction of the drum 2 measures the difference in the phase change rate in accordance with the increase in the number of revolutions of the motor 10.
  • the drum type washing machine 1 of the present embodiment can measure the amplitude value in the front-rear direction with higher accuracy.
  • washing machine an example in which the present invention is applied to a so-called inclined drum type fully automatic washing machine which can be applied to a home is disclosed, and of course, it is widely applicable to a laundromat shop.
  • the horizontal washing and drying machine can also be suitably applied to the control method of the present invention.
  • lifting ribs 7 need not necessarily be arranged at equal angular intervals in the circumferential direction of the drum 2, and of course, it is needless to have the same shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

La présente invention concerne un lave-linge à tambour susceptible de réduire de manière fiable un déséquilibre dans un tambour de lavage lors de l'élimination de l'eau même lorsque du linge à l'intérieur du tambour de lavage est réparti de manière inégale, éliminant rapidement l'eau afin de réduire le temps de lavage. Le lave-linge (1) selon la présente invention est caractérisé en ce qu'il comprend : un élément d'étanchéité d'orifice d'alimentation (PK), et un corps principal de lavage (1a) qui est relié à un tambour externe (3) afin de contenir hermétiquement l'eau et qui sert de structure; un détecteur de proximité (14) servant de dispositif de détection d'emplacement pour un compensateur creux dans un tambour, un tambour (2) dans un tambour externe (3) générant un signal une fois par rotation; un capteur d'accélération unique (12), qui est destiné à détecter la vibration du tambour externe; une partie de commande centrale (31) servant d'unité de détection de position excentrée, détectant des positions excentrées (N) en direction avant et arrière, vers le haut et vers le bas, et en direction gauche et droite du tambour (2). Le lave-linge (1) prend en compte une différence de phase produite par la différence entre les positions excentrées (N) du tambour (2) en direction avant et arrière afin de calculer les positions excentrées (N) vers le haut et vers le bas et en direction gauche et droite.
PCT/CN2018/090760 2017-11-21 2018-06-12 Lave-linge à tambour WO2019100695A1 (fr)

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JP2017223504A JP7178651B2 (ja) 2017-11-21 2017-11-21 ドラム式洗濯機

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