WO2019120138A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2019120138A1
WO2019120138A1 PCT/CN2018/121077 CN2018121077W WO2019120138A1 WO 2019120138 A1 WO2019120138 A1 WO 2019120138A1 CN 2018121077 W CN2018121077 W CN 2018121077W WO 2019120138 A1 WO2019120138 A1 WO 2019120138A1
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WO
WIPO (PCT)
Prior art keywords
water
washing machine
water injection
rotation speed
control unit
Prior art date
Application number
PCT/CN2018/121077
Other languages
English (en)
French (fr)
Inventor
西野雅文
Original Assignee
青岛海尔洗衣机有限公司
Aqua株式会社
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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
Publication of WO2019120138A1 publication Critical patent/WO2019120138A1/zh

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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
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • 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
    • D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • D06F37/14—Ribs or rubbing means forming part of the receptacle
    • 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • 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
    • D06F2103/26—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
    • D06F2105/02—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
    • 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

Definitions

  • the present invention relates to a washing machine capable of eliminating the imbalance of the dewatering tub during the dehydration process, particularly at a high speed, and suppressing vibration and noise caused by the eccentricity of the dewatering tub during dehydration.
  • the laundry is biased in the dewatering tub during dehydration to generate vibration and noise.
  • This vibration and noise sometimes cause trouble depending on the installation place of the washing machine and the surrounding environment.
  • the eccentricity of the dewatering tub at the time of rotation becomes large, and a large torque is required for the rotation, so that the dehydration operation cannot be started.
  • Patent Document 1 discloses a technique for detecting an unbalance amount and an unbalanced position of laundry in a dewatering tub during dehydration, and in the case where there is an imbalance, applying a brake to the rotation of the dewatering tub to lower the centrifugal force The agglomerated clothes causing the imbalance are dropped and dispersed by gravity.
  • the unbalance detection and the dispersion operation can be performed only when the dewatering tub rotates at a low speed during the dehydration process, and may occur again after the dewatering bucket starts to rotate at a high speed due to the influence of the type of the laundry or the like. balance.
  • this technology can only be used in washing machines with a rotating shaft level of the dewatering bucket.
  • Patent Document 1 Japanese Patent Laid-Open No. Hei 9-290089
  • An object of the present invention is to solve such a problem effectively, and an object thereof is to eliminate a dewatering bucket by a simple structure even in the case where a dewatering process, particularly a high-speed rotation, in which a bias of laundry is present in a dewatering bucket balance.
  • the present invention has been made in view of the above problems.
  • the washing machine of the present invention is characterized in that it includes a hollow balancer that is disposed on the inner circumferential surface of the dewatering bucket at three or more different angular and phase angles around the axis, and a common water guiding portion is disposed in the dewatering bucket.
  • the upper portion is annular, and a communication port is respectively opened at a position where the balancers can flow into the respective balancers; a common water injection device injects the adjustment water into the water guide portion; and a water injection control portion that generates no in the dewatering tank The water injection device is operated when balancing.
  • the washing machine of the present invention includes: a rotation speed control unit that rotates the dewatering tub; and an unbalance amount detecting unit that detects an unbalance amount in the dehydration tub and passes the rotation speed control unit
  • the water injection control unit causes the water injection device to operate when the rotation speed of the dewatering can reaches a predetermined set rotation speed or more and the unbalance amount detected by the unbalance amount detection unit reaches a preset dehydration threshold or more Water is injected into the water guiding portion.
  • the washing machine of the present invention is characterized in that the water injection control unit does not operate the water injection device until the rotation speed controlled by the rotation speed control portion reaches a preset set rotation speed or more after the spin-drying is started.
  • the washing machine of the present invention is characterized in that the set rotational speed is set at a position exceeding the resonance rotational speed.
  • the washing machine of the present invention is characterized in that the rotation speed control unit stops the acceleration of the dewatering tub when water injection is performed by the water injection control unit.
  • the water is guided by the dewatering bucket that rotates while being eccentric, and the water is guided to the opposite side of the eccentric side according to the principle of the liquid balancer and flows into the eccentric load through the communication port located at the position.
  • the balancer of the opposite position As a result, the imbalance is eliminated. Further, according to the above configuration, since it is possible to perform the function of injecting water into the plurality of balancers in response to the high-speed rotation, and also to share the water conduit portion and the water injection device, the structure can be simplified.
  • the water injection is performed when the dehydration rotation speed reaches the set rotation speed or more and the unbalance amount reaches the dehydration threshold or more. Therefore, even if complicated control is not performed, it can be quickly responded to when the rotation region in which the principle of the liquid balancer effectively functions is unbalanced.
  • the set rotational speed is set to a rotational region exceeding the resonance rotational speed, it is possible to avoid instability in the unstable rotational speed region, and in particular to stabilize the rotation in the high-speed rotational region.
  • the dewatering bucket since the dewatering tub is set to stop at the time of water injection, the dewatering bucket can be quickly prevented from eliminating the imbalance.
  • Fig. 1 is a perspective view showing an appearance of a washing machine in accordance with an embodiment of the present invention.
  • Fig. 2 is a schematic cross-sectional view showing the configuration of the same washing machine.
  • Fig. 3 is a perspective view of Fig. 2;
  • Fig. 4 is a partial enlarged view of Fig. 3;
  • Fig. 5 is an explanatory view of the operation of the same washing machine.
  • Fig. 6 is a functional block diagram showing a schematic configuration of a control system of the same washing machine.
  • Fig. 7 is a flow chart showing the flow of control in the dehydration process of the same washing machine.
  • 2 dewatering bucket
  • 2a inner circumferential surface
  • 5 water guiding portion
  • 5a1 communication port
  • 6 water injection device
  • 7 balancer
  • 32 rotation speed control portion
  • 34 unbalance amount detecting portion
  • 35 water injection control Department
  • N1 set speed
  • S1 axis
  • W adjust water
  • ⁇ dehydration threshold
  • FIG. 1 is a perspective view showing an appearance of a vertical washing machine (hereinafter referred to as "washing machine") 1 according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a configuration of the washing machine 1 of the embodiment.
  • Fig. 3 is a perspective view of Fig. 2;
  • Fig. 4 is a partial enlarged view of Fig. 3;
  • FIG. 5 is an explanatory view of the operation of the washing machine 1.
  • FIG. 6 is a functional block diagram showing a schematic configuration of a control system of the washing machine 1.
  • 4 is a flow chart showing a control flow in the dehydration process of the washing machine 1.
  • the washing machine 1 of the present embodiment includes a washing machine main body 1a, an outer tub 3 constituting the washing tub 1b, a dewatering tub 2, an annular water guiding portion 5, a water injection device 6, a driving portion 40, and a control portion 30 (see Fig. 6).
  • the dewatering tank 2 has a baffle plate 7 in which water is stored at three places in the inner peripheral surface 2a1, that is, at three places in the present embodiment.
  • the baffles 7 are communicated with the water guide 5a of the common water guiding portion 5, and water is injected from the injection device 6 to the water portion 5 at the time when the amount of unbalance becomes large, so that the water W is adjusted according to the liquid balancer.
  • the principle flows into the baffle 7 on the opposite side of the eccentric side.
  • the washing machine body 1a shown in Fig. 1 has a substantially rectangular parallelepiped shape.
  • An opening 11 for taking laundry into the dewatering tub 2 is formed on the upper surface 10a of the washing machine main body 1a, and an opening and closing cover 11a that can open and close the opening 11 is attached.
  • the outer tub 3 is a bottomed cylindrical member constituting the outer shape of the washing tub 1b disposed inside the washing machine main body 1a, and the washing water can be stored therein.
  • the dewatering tub 2 is a bottomed cylindrical member that is disposed coaxially with the outer tub 3 in the outer tub 3 and that constitutes the washing tub 1b together with the outer tub 3 and is rotatably supported.
  • the dewatering tub 2 can accommodate laundry therein, and has a plurality of water-passing holes 2b on its wall surface 2a (refer to Fig. 3).
  • a pulsator (stirring blade) 4 is rotatably disposed in the center of the bottom portion 2c of the dewatering tub 2.
  • the pulsator 4 has a pulsator main body 4b having a disk shape, a plurality of upper blade portions 4c formed on the upper surface of the pulsator main body 4b, and a plurality of lower blades formed on the lower surface of the pulsator main body 4b. Part 4a.
  • Such a pulsator 4 agitates the washing water stored in the outer tub 3 to generate a water flow.
  • the rotation speed control unit 32 shown in FIG. 6 drives the drive unit 40 shown in FIG. 2 by the motor control circuit 33 to rotate the drive shaft 17 that extends toward the bottom portion 2c of the dewatering tank 2, and to the dewatering tank 2 and the pulsator 4 A driving force is applied to rotate the dewatering tub 2 and the pulsator 4.
  • the washing machine 1 mainly rotates only the pulsator 4 during the washing process, and the dewatering tub 2 and the pulsator 4 are integrally rotated at high speed during the dehydration process.
  • baffles (water injection pipes) 7 corresponding to the balancer are provided at equal intervals (equal angles) in the circumferential direction of the inner peripheral surface 2a1 of the dewatering tank 2.
  • Each of the baffles 7 is formed to extend in the vertical direction from the bottom portion 2c of the dewatering tub 2 to the upper end portion, and protrudes from the inner peripheral surface 2a1 of the dewatering tub 2 toward the axis S1.
  • each of the baffles 7 has a hollow shape, and the cross-sectional shape is formed in an arc shape. With such a shape, the baffle as a balancer also functions to agitate the laundry during the dehydration process.
  • the shape of the baffle plate 7 is such that the protrusion to the axis S1 of the dewatering tub 2 is small and expands along the circumferential direction of the dewatering tub 2, thereby suppressing the narrowing of the accommodating space of the dewatering tub 2.
  • the washing water is circulated in the dewatering tank 2. That is, the baffle 7 has a circulation function of washing water.
  • the water conduit portion having the opening portion 71 and the circulation nozzle 70 and capable of being rinsed as described above is also applicable to a conventional washing machine, but usually only one is provided.
  • a partition piece 7a is provided inside the baffle plate 7, and the partition piece extends from the position where the communication port 5a1 to be described later communicates with the circulation nozzle 70 to the inner circumferential surface of the dewatering tub 2.
  • the partition piece 7a extends from the upper end edge of the circulation nozzle 70, and the free end 7a1 side is bent downward.
  • a gap 7b is formed between the free end 7a1 of the partition piece 7a and the inner peripheral surface 2a1 of the dewatering tub 2, and the adjusted water W to be supplied from the water guide 5a of the water guiding portion 5 flows downward through the gap 7b.
  • the annular water guiding groove 5a that opens upward in the water guiding portion 5 is a member that is formed around the axis S1 of the dewatering tub 2, and is fixed to the upper end portion of the inner circumferential surface 2a1 of the dewatering tub 2.
  • the water guiding groove 5a is common to the three baffles 7, and a communication port 5a1 for causing the regulating water W to flow to the baffle plate 7 located at the opposing position when the dewatering tub 2 is inclined is partially formed.
  • the size and shape of such a water guiding portion 5 are substantially the same as those of a known liquid balancer installed in a conventional washing machine. In the present embodiment, instead of a liquid balancer, it is attached to a mounting position of a general liquid balancer.
  • the liquid balancer functions to passively eliminate the imbalance of the dewatering tank 2 during dehydration, and the working principle is different from that of the water guiding unit 5 of the present embodiment which eliminates the imbalance of the dewatering tank 2 in cooperation with the baffle 7 to be described later. The effect is also small.
  • Such a water guiding portion 5 communicates with the upper end portion of the baffle 7 through the communication port 5a1.
  • the communication port 5a1 is formed by a slit-shaped opening, and the opening is provided from the bottom of the water guide 5a of the water guiding portion 5 to the façade so as to communicate with the inside of the baffle 7 above the circulating water port 70.
  • An annular water guiding port 5a2 is provided at an upper portion of the water guiding groove 5a. The adjustment water W can enter the water guide 5a through the water conduit 5a2 and enter the baffle 7 through the communication port 5a1.
  • the water injection device 6 is a member that injects the adjustment water W into the water tank 5a.
  • the water injection device 6 has a water injection nozzle 6a that is opened above the water guide 5a, and has a distal end 6a1 disposed toward the water conduit 5a2, and a water supply valve 6b that is connected to the water injection nozzle 6a (see Fig. 2).
  • the water injection nozzle 6a and the water guiding groove 5a are provided together as a common member with respect to the baffle plate 7 provided at three places.
  • tap water is used as the adjustment water W.
  • the water guiding portion 5 In the configuration of such a water injection device 1c, if the water guiding portion 5 is filled with water without being unbalanced, it can flow into any of the baffles 7. However, when the imbalance occurs during the rotation, the water balancer 5 acts on the water guiding portion 5 in the water guiding groove 5a of the water portion 5. That is, as shown in FIG. 5, when the axis S1 is inclined in the direction of the arrow A1 due to the unbalance amount M, as shown by the arrow A2, the adjustment water W is gathered toward the opposite side of the inclined side, and communicates via the opposite side on the inclined side. The port 5a1 flows into the baffle 7 shown in Fig. 3 and the like.
  • the baffle plate 7 is a ⁇ type baffle structure capable of retaining the adjustment water W by centrifugal force.
  • the centrifugal force in the baffle 7 is gradually attenuated, the adjustment water W flows out from the opening portion 71 by gravity, and is discharged to the outside of the tub 3 via the drain pipe 50. At this time, a part of the adjustment water W flows into the lower side of the pulsator main body 4b via the opening 71, and is finally discharged so as not to wet the laundry located above the pulsator main body 4b.
  • the washing machine 1 is provided with an unbalance amount detecting unit 34 and a water injection control unit 35 in order to control the timing at which the water guiding unit 5 performs water injection.
  • the unbalance amount detecting unit 34 calculates the unbalance amount based on the magnitude of the vibration value of the acceleration in the horizontal direction and the vertical direction input from the acceleration sensor 12. This imbalance amount is input to the water injection control unit 35 via the central control unit 31. It should be noted that in the present embodiment, it is not necessary to detect an unbalanced position.
  • the water injection control unit 35 operates the water injection device 6 to inject the water into the water portion 5 .
  • FIG. 7 is a flowchart showing a processing procedure executed by the control unit 30 including the rotation speed control unit 32 and the water injection control unit 35.
  • the outline of the control will be described along the flowchart.
  • control unit 30 starts accelerating the dewatering tub 2 to the highest spin speed, and moves to step S2.
  • step S2 the control unit 30 determines whether or not the vibration value of the acceleration sensor 12 is equal to or lower than the low-speed rotation threshold ⁇ allowed at the time of the preset low-speed rotation.
  • the low-speed rotation threshold value ⁇ corresponds to a case where it is difficult to increase the vibration level of the rotation speed without measures.
  • the process proceeds to step S3, and if no, the process proceeds to step S4.
  • step S3 the control unit 30 determines whether or not the spin-drying speed exceeds the predetermined number of revolutions N1, for example, 300 rpm. In the case of NO, the process returns to step S1, and if YES, the process proceeds to step S5.
  • the predetermined number of revolutions of 300 rpm is a number of revolutions set at a position exceeding the resonance speed, and the control of the present invention is not performed until the number of revolutions is exceeded. This is because the effect of the liquid balancer has an adverse effect.
  • step S4 the control unit 30 receives the case where the vibration value of the acceleration sensor 12 exceeds the low-speed rotation threshold value ⁇ allowed in the low-speed rotation in the above-described step S2, and stops the rotation of the dewatering tub 2.
  • step S5 the control unit 30 determines whether or not the vibration value of the acceleration sensor 12 is equal to or lower than the dehydration threshold ⁇ .
  • the dehydration threshold ⁇ is set to the maximum vibration value that allows unbalance. In the case of YES, the process proceeds to step S6, and if no, the process proceeds to step S7.
  • step S6 the control unit 30 starts accelerating the dewatering tub 2 to the highest rotational speed, and proceeds to step S9. At this time, when the process of opening the water injection valve 6b is being performed in step S8 to be described later, the water injection valve 6b is closed.
  • step S7 the control unit 30 receives the case where it is determined in step S5 that the vibration value of the acceleration sensor 12 exceeds the dehydration threshold value ⁇ , and stops the acceleration of the dehydration tank 2, and proceeds to step S8.
  • step S8 the control unit 30 opens the water injection valve 6b by the water injection control unit 35, and injects water into the water tank 5a.
  • the injected adjustment water W moves in the water guide 5a according to the principle of the liquid balancer and gathers on the opposite side to the direction in which the dewatering tub 3 is eccentric, and injects the corresponding baffle via the communication port 5a1 opened in the vicinity thereof.
  • the communication port 5a1 opened in the vicinity thereof.
  • step S9 the control unit 30 receives the fact that the acceleration has started in the above-described step S6, and determines whether or not the spin-drying speed has reached the maximum rotational speed Nmax . If yes, go to step S10. If no, go back to step S5.
  • step S10 the control unit 30 determines whether or not the dehydration time has elapsed. Then, if it is, the dehydration process is finished, and if not, it returns to step S5.
  • a scheme may be employed in which the timer is operated at the time when the maximum rotational speed is reached, and ends after the dehydration time has elapsed.
  • the hollow balancer 7 is provided at three equal distances of the dewatering tub 2, and the water is guided from the ring-shaped common water guiding portion 5a to the balancers 7 via the communication port 5a1.
  • Water injection is performed from the water injection device 6 when an imbalance occurs in the dewatering tank 2.
  • the dewatering tub 2 that rotates while being eccentric is gathered on the opposite side of the eccentric side according to the principle of the liquid balancer, and passes through the communication port 5a1 at the position to flow into the opposite side of the eccentric load.
  • Position balancer 7. According to this principle, it is possible to provide a simple configuration and reliably eliminate the unbalanced state even when rotating at a high speed.
  • the set rotation speed N1 is set to a position that is unstable in rotation, that is, a position exceeding the resonance rotation speed, the effect of the present invention can be made effective.
  • the dewatering tub 2 can be quickly prevented from being unbalanced.

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

Abstract

一种洗衣机，其即使在进入脱水过程尤其是高速旋转中脱水桶内存在洗涤物的偏置的情况下，也能通过简单的结构消除脱水桶的不平衡。所述洗衣机具备：中空的平衡器(7)，围绕轴线(S1)，角度相位各异地在脱水桶(2)的内周面(2a)配设有三个；共用的导水部(5)，配置于脱水桶(2)的上部并呈环状，在能流入各平衡器(7)的位置分别开设有连通口(5a1)；共用的注水装置(6)，向导水部(5)注入调整水；以及注水控制部(35)，在脱水桶(2)内产生不平衡时使注水装置(6)工作。

Description

洗衣机 技术领域
本发明涉及一种洗衣机，其能在特别是高速旋转时消除脱水过程中的脱水桶的不平衡，抑制脱水时脱水桶的偏心所导致的振动、噪音。
背景技术
对于设置于普通家庭或者自助洗衣房等的普通洗衣机而言，在脱水时洗涤物在脱水桶内偏置而产生振动、噪音。根据洗衣机的设置场所、周边环境，该振动、噪音有时会带来困扰。此外，在此时的洗涤物的偏置大的情况下，旋转时的脱水桶的偏心变大，旋转需要大的转矩，因此，无法开始脱水运转。
因此，专利文献1中公开了一种技术，其检测脱水时脱水桶内的衣物的不平衡量以及不平衡位置，并在存在不平衡的情况下，对脱水桶的旋转施加制动而使离心力降低，使造成不平衡的原因的成团衣物因重力而落下并分散开。
但是，专利文献1公开的构成中，只能在脱水过程中的脱水桶低速旋转时进行不平衡检测和分散作业，在脱水桶开始高速旋转之后可能会因衣物的种类等的影响而再次发生不平衡。
此外，该技术只能用于脱水桶的旋转轴水平的洗衣机中。
现有技术文献
专利文献
专利文献1：日本特开平9-290089号公报
发明内容
发明所要解决的问题
本发明的目的在于有效地解决这样的问题，其目的在于，即使在进入脱水 过程尤其是高速旋转中脱水桶内存在洗涤物的偏置的情况下，也能通过简单的结构消除脱水桶的不平衡。
用于解决问题的方案
本发明鉴于以上的问题点，采用了如下的方案。
即，本发明的洗衣机的特征在于，具备：中空的平衡器，围绕轴线，角度相位各异地在脱水桶的内周面配设有三个以上；共用的导水部，配置于所述脱水桶的上部并呈环状，在能流入所述各平衡器的位置分别开设有连通口；共用的注水装置，向所述导水部注入调整水；以及注水控制部，在所述脱水桶内产生不平衡时使所述注水装置工作。
此外，本发明的洗衣机的特征在于，具备：旋转速度控制部，对所述脱水桶进行旋转控制；以及不平衡量检测部，检测所述脱水桶内的不平衡量，当通过所述旋转速度控制部的控制而使脱水桶的转速达到预设的设定转速以上且由所述不平衡量检测部检测出的不平衡量达到预设的脱水阈值以上时，所述注水控制部使所述注水装置工作而向所述导水部进行注水。
此外，本发明的洗衣机的特征在于，开始脱水旋转之后，直到受所述旋转速度控制部控制的转速达到预设的设定转速以上，所述注水控制部不使所述注水装置工作。
此外，本发明的洗衣机的特征在于，设定转速设定于超过共振转速的位置。
此外，本发明的洗衣机的特征在于，通过注水控制部进行注水时，所述旋转速度控制部停止脱水桶的加速。
发明效果
根据本发明，通过对一边偏心一边进行旋转的脱水桶向导水部进行导水，根据液体平衡器的原理来将调整水聚集到偏心侧的相反侧并通过位于该位置的连通口流入位于偏心负载的对置位置的平衡器。其结果是，消除了不平衡状态。而且，根据上述构成，由于既能对应高速旋转，而且具有向多个平衡器进行注水的功能，同时还能将导水部、注水装置共用化，因而能实现结构的简化。
此外，根据本发明，在脱水转速达到设定转速以上并且不平衡量达到脱水 阈值以上时，执行注水。因此，即使不进行复杂的控制，也能在液体平衡器的原理有效地发挥作用的旋转区域产生不平衡的情况下迅速地应对。
此外，根据本发明，由于即使开始脱水，只要不达到设定转速以上就不进行注水，因而能防止液体平衡器的功能在低旋转区域反而成为振动发生的原因。
此外，根据本发明，由于设定转速设定为超过共振转速的旋转区域，因此能避免在不稳定的转速区域控制不稳定，尤其能使高速旋转区域中的旋转稳定。
此外，根据本发明，由于设置为在注水时使脱水桶停止，因而能使脱水桶迅速趋于消除不平衡。
附图说明
图1是表示本发明的一实施方式的洗衣机的外观的立体图。
图2是表示同一洗衣机的构成的示意性剖面图。
图3是图2的立体图。
图4是图3的局部放大图。
图5是同一洗衣机的作用说明图。
图6是表示同一洗衣机的控制***的概略构成的功能框图。
图7是表示同一洗衣机的脱水过程中的控制流程的流程图。
附图标记说明
2：脱水桶；2a：内周面；5：导水部；5a1：连通口；6：注水装置；7：平衡器；32：旋转速度控制部；34：不平衡量检测部；35：注水控制部；N1：设定转速；S1：轴线；W：调整水；α：脱水阈值。
具体实施方式
以下，基于附图对本发明的一实施方式进行详细说明。
图1是表示本发明的一实施方式的立式洗衣机(以下，称为“洗衣机”。)1的外观的立体图。图2是表示本实施方式的洗衣机1的构成的示意性剖面图。图3是图2的立体图。图4是图3的局部放大图。图5是洗衣机1的作用说明图。图6是表示洗衣机1的控制***的概略构成的功能框图。图4是表示洗衣机1的脱水过程中的控制流程的流程图。
本实施方式的洗衣机1具备：洗衣机主体1a、构成洗涤桶1b的外桶3和脱水桶2、环状的导水部5、注水装置6、驱动部40以及控制部30(参照图6)，脱水桶2在内周面2a1的多处即本实施方式中的三处具有蓄水的折流板7。本实施方式通过使这些折流板7与共用的导水部5的导水槽5a连通，并在不平衡量变大的时刻从注入装置6向导水部5进行注水，使得调整水W根据液体平衡器的原理流入位于偏心侧的相反侧的折流板7。以下，对各部的构成以及功能进行具体说明。
图1所示的洗衣机主体1a为近似长方体形状。在洗衣机主体1a的上表面10a，形成有用于向脱水桶2投取洗涤物的开口11，并且装配有可开闭该开口11的开闭盖11a。
外桶3为构成配置于洗衣机主体1a的内部的洗涤桶1b的外形的有底筒状的构件，可在内部蓄积洗涤水。
脱水桶2是在外桶3内与外桶3同轴地配置而与外桶3一起构成洗涤桶1b并且被自由旋转地支承的有底筒状的构件。脱水桶2可在内部收容洗涤物，在其壁面2a具有许多通水孔2b(参照图3)。
在这样的脱水桶2的底部2c中央，自由旋转地配置有波轮(搅拌翼)4。如图3所示，波轮4具有近似圆盘形状的波轮主体4b、形成于波轮主体4b的上表面的多个上叶片部4c、以及形成于波轮主体4b的下表面的多个下叶片部4a。这样的波轮4将蓄于外桶3内的洗涤水搅拌而产生水流。
图6所示的旋转速度控制部32通过马达控制电路33来驱动图2所示的驱动部40，使朝向脱水桶2的底部2c延伸出的驱动轴17旋转，向脱水桶2、波轮4施加驱动力，使脱水桶2、波轮4旋转。洗衣机1在洗涤过程中主要只使波轮4旋转，在脱水过程中使脱水桶2和波轮4一体地高速旋转。
如图3、4所示，在脱水桶2的内周面2a1，沿周向等间隔(等角度)地设置有三个相当于平衡器的折流板(注水管)7。各折流板7形成为从脱水桶2的底部2c到上端部沿上下方向延伸，并从脱水桶2的内周面2a1朝向轴线S1突出。此外，各折流板7为中空状，横截面形状形成为圆弧状。通过这样的形状，该作为平衡器的折流板在脱水过程中还起到搅拌洗涤物的作用。这样，折流板7的形状为向脱水桶2的轴线S1的突出小并沿着脱水桶2的周向扩大的形状，从而抑制了脱水桶2的收容空间变狭窄。
如图2、3所示，在这样的折流板7的下端部形成有在脱水桶2的底部2c附近开口，更具体而言在波轮主体4b的下方开口的开口部71。此外，在折流板7的上端部形成有横向长的循环水口70。因此，在处于排水阀50a关闭且外桶3内蓄有洗涤水的状态的洗涤过程中，如图3中箭头所示，被波轮4的下叶片部4a搅拌的洗涤水从开口部71进入折流板7内并从循环水口70排出，衣物被淋洗。此外，通过重复这个动作，使得洗涤水在脱水桶2内循环。即，折流板7具有洗涤水的循环功能。需要说明的是，像这样具有开口部71以及循环水口70并能进行淋洗的通水管部也适用于现有的洗衣机，但通常只设置一个。
进而，如图4所示，在折流板7的内部设置有分隔片7a，该分隔片从后述的连通口5a1所连通的位置与循环水口70之间延伸到脱水桶2的内周面2a1的附近位置。分隔片7a从循环水口70的上端缘延伸，自由端7a1侧向下方弯曲。在这样的分隔片7a的自由端7a1与脱水桶2的内周面2a1之间形成有间隙7b，从导水部5的导水槽5a供给的后述调整水W经由该间隙7b流入下方。
导水部5的朝向上方敞开的环状的导水槽5a是绕脱水桶2的轴线S1构成的构件，固定于脱水桶2的内周面2a1的上端部。导水槽5a相对于三个折流板7是共用的，局部形成有用于在脱水桶2倾斜的情况下使调整水W流向位于对置位置的折流板7的连通口5a1。这样的导水部5的大小以及形状与现有的洗衣机中装配的已知的液体平衡器大致相同，在本实施方式中，代替液体平衡器而装配于一般的液体平衡器的装配位置。液体平衡器发挥在脱水时被动消除脱水桶2的不平衡的作用，比起后述的与折流板7配合消除脱水桶2的不平衡的本实施方式的导水部5，工作原理不同，其效果也小。
这样的导水部5与折流板7的上端部通过连通口5a1连通。连通口5a1由狭 缝状的开口部构成，该开口部在循环水口70的上方以与折流板7的内部连通的方式从导水部5的导水槽5a的底部到立面部进行设置。在导水槽5a的上部设置有圆环状的导水口5a2。调整水W可以通过导水口5a2进入导水槽5a，并通过连通口5a1进入折流板7。
注水装置6是向导水槽5a注入调整水W的构件。注水装置6具有：注水喷嘴6a，在导水槽5a的上方开口，并使顶端6a1朝向导水口5a2配置；以及供水阀6b，与该注水喷嘴6a连接(参照图2)。相对于折流板7设置于三处，注水喷嘴6a和导水槽5a一起被设置为共用的构件。需要说明的是，本实施方式中，将自来水用作调整水W。
在这样的注水装置1c的构成中，如果导水部5在没有不平衡的状态下被注水的话，可流入任一个折流板7。但是，若在旋转中产生不平衡时向导水部5的导水槽5a内对导水部5蓄水的话，液体平衡器发挥作用。即，如图5所示，当轴线S1因不平衡量M向箭头A1的方向倾斜时，如箭头A2所示，调整水W向倾斜侧的相反侧聚集，并经由位于倾斜侧的相反侧的连通口5a1，流入图3等所示的折流板7内。当脱水桶2为某特定转速以上时，流入折流板7内的调整水W通过离心力贴着脱水桶2的内周面2a1而滞留。由此，该折流板7的重量增加，脱水桶2的平衡发生变化。如此，折流板7是能通过离心力来存留调整水W的匣式折流板结构。并且，当脱水过程接近结束而脱水桶2的旋转速度降低时，折流板7内的离心力逐渐衰减，调整水W通过重力从开口部71流出，并经由排水管50向外桶3外排出。此时，一部分调整水W经由开口部71流入波轮主体4b的下方，最终以不会浸湿位于波轮主体4b上方的衣物的方式被排出。
这里，洗衣机1为了控制向导水部5进行注水的时机，除了图6所示的设置于控制部30的旋转速度控制部32之外，还设置有不平衡量检测部34、注水控制部35。
不平衡量检测部34根据从加速度传感器12输入的水平方向和垂直方向的加速度的振动值的大小计算出不平衡量。该不平衡量经由中央控制部31输入到注水控制部35。需要说明的是，本实施方式中，不需要检测不平衡位置。
当所述旋转速度控制部32的控制下的脱水桶2的转速在超过共振转速的情况下达到预设的设定转速N1以上并且所述不平衡量检知部34检测出的不平衡 量达到预设的脱水阈值α以上时，注水控制部35使注水装置6工作而向导水部5进行注水。
在衣物不均匀地分散于脱水桶2内的情况下，因其不平衡量而在外桶3产生圆轨道的振动。此时向脱水桶2的导水部5进行注水的话，根据上述的液体平衡器的原理，在与衣物不平衡对称的位置聚水，不进行复杂的控制也能消除不平衡。
图7是表示包括旋转速度控制部32、注水控制部35的控制部30执行的处理步骤的流程图。以下，顺着该流程图，对控制的概要进行说明。
<步骤S1>
首先，随着脱水主程序的开始，控制部30开始将脱水桶2向最高脱水转速加速，移至步骤S2。
<步骤S2>
步骤S2中，控制部30判断加速度传感器12的振动值是否为预设的低速旋转时允许的低速旋转阈值β以下。低速旋转阈值β与产生了难以不作措施地提高转速的振动等级的情况对应。在是的情况下进入步骤S3，在否的情况下进入步骤S4。
<步骤S3>
步骤S3中，控制部30判断脱水转速是否超过了规定转速N1，例如300rpm。在否的情况下返回步骤S1之前，在是的情况下进入步骤S5。该规定转速300rpm是设定于超过共振转速的位置的转速，直到超过该转速为止，不进行本发明的控制。这是因为，液体平衡器的作用反而会产生不良影响。
<步骤S4>
步骤S4中，控制部30接收到上述的步骤S2中加速度传感器12的振动值超过低速旋转时允许的低速旋转阈值β这一情况，使脱水桶2的旋转停止。
<步骤S5>
步骤S5中，控制部30判断加速度传感器12的振动值是否为脱水阈值α以下。脱水阈值α设定为允许不平衡的最大的振动值。在是的情况下进入步骤S6， 在否的情况下进入步骤S7。
<步骤S6>
步骤S6中，控制部30开始将脱水桶2向最高转速加速，进入步骤S9。这时，当后述的步骤S8中正在进行打开注水阀6b的处理时，将注水阀6b关闭。
<步骤S7>
步骤S7中，控制部30接收到步骤S5中判断加速度传感器12的振动值超过了脱水阈值α这一情况，停止脱水桶2的加速，进入步骤S8。
<步骤S8>
步骤S8中，控制部30通过注水控制部35打开注水阀6b，向导水槽5a进行注水。由此，注入的调整水W根据液体平衡器的原理而在导水槽5a内移动并向脱水桶3偏心的方向的相反侧聚集，并经由在这附近开口的连通口5a1注入对应的折流板7内。由于注入的水贴着折流板7的内表面而滞留，因此能消除不平衡。
<步骤S9>
步骤S9中，控制部30接收到在上述的步骤S6中已开始加速这一情况，判断脱水转速是否达到了最高转速N max。是的话进入步骤S10，否的话返回步骤S5之前。
<步骤S10>
步骤S10中，控制部30判断是否经过了脱水时间。然后，是的话结束脱水过程，否的话返回步骤S5之前。例如，可以举出如下方案：在到达最大转速的时刻使计时器工作，并在经过脱水时间后结束。
这样，本实施方式的洗衣机在脱水桶2的等距的三处设置中空的平衡器7，从呈环状的共用的导水部5a经由连通口5a1向各平衡器7进行导水，并在脱水桶2内产生不平衡时从注水装置6进行注水。由此，对于一边偏心一边进行旋转的脱水桶2，根据液体平衡器的原理而在偏心侧的相反侧聚集调整水W并使其通过位于该位置的连通口5a1而流入位于偏心负载的对置位置的平衡器7。根据该原理，能设置成简单的构成，并且即使在高速旋转时也能可靠地消除不平 衡状态。
尤其是，设置为当旋转速度控制部32的控制下的脱水桶2的转速达到预设的设定转速N1以上并且不平衡量检测部34检测出的不平衡量达到预设的脱水阈值α以上时，执行注水。因此，即使不进行复杂的控制，也能在液体平衡器的原理有效地发挥作用的旋转区域产生不平衡的情况下迅速地应对。
此外，即使开始脱水旋转，只要不达到设定转速N1以上脱水桶2就不进行注水，因而能避免在液体平衡器不起作用时导水部5中有水而产生不良影响。
此外，由于设定转速N1设定于旋转的不稳定区域即超过共振转速的位置，因此能使本发明的效果具有实效性。
此外，由于在由注水控制部35进行注水时停止脱水桶2的加速，因此能使脱水桶2迅速趋于消除不平衡。
以上，对本发明的一实施方式进行了说明，但是本实施方式的构成不局限于上述的实施方式，可以进行各种变形。

Claims (5)

  1. 一种洗衣机，其特征在于，具备：
    中空的平衡器，围绕轴线，角度相位各异地在脱水桶的内周面配设有三个以上；
    共用的导水部，配置于所述脱水桶的上部并呈环状，在能流入所述各平衡器的位置分别开设有连通口；
    共用的注水装置，向所述导水部注入调整水；以及
    注水控制部，在所述脱水桶内产生不平衡时使所述注水装置工作。
  2. 根据权利要求1所述的洗衣机，其特征在于，具备：
    旋转速度控制部，对所述脱水桶进行旋转控制；以及
    不平衡量检测部，检测所述脱水桶内的不平衡量，
    当通过所述旋转速度控制部的控制而使脱水桶的转速达到预设的设定转速以上并且由所述不平衡量检测部检测出的不平衡量达到预设的脱水阈值以上时，所述注水控制部使所述注水装置工作而向所述导水部进行注水。
  3. 根据权利要求2所述的洗衣机，其特征在于，
    脱水开始后，直到通过受所述旋转速度控制部控制的转速达到预设的设定转速以上，所述注水控制部不使所述注水装置工作。
  4. 根据权利要求3所述的洗衣机，其特征在于，
    所述设定转速设定于超过共振转速的位置。
  5. 根据权利要求2～4的任一项所述的洗衣机，其特征在于，
    通过所述注水控制部进行注水时，所述旋转速度控制部停止脱水桶的加速。
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* Cited by examiner, † Cited by third party
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CN106029970A (zh) * 2014-02-20 2016-10-12 Lg电子株式会社 衣物处理设备
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CN1281070A (zh) * 1999-07-16 2001-01-24 三洋电机株式会社 洗衣机
EP1655404A1 (en) * 2004-11-08 2006-05-10 Fagor, S.Coop. Device and method for the balancing of a washing machine
CN106029970A (zh) * 2014-02-20 2016-10-12 Lg电子株式会社 衣物处理设备
CN106544806A (zh) * 2016-09-30 2017-03-29 无锡小天鹅股份有限公司 波轮洗衣机

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WO2021088738A1 (zh) * 2019-11-06 2021-05-14 青岛海尔洗衣机有限公司 洗衣机

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