JP2015043786A - Washing machine - Google Patents

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Publication number
JP2015043786A
JP2015043786A JP2011284994A JP2011284994A JP2015043786A JP 2015043786 A JP2015043786 A JP 2015043786A JP 2011284994 A JP2011284994 A JP 2011284994A JP 2011284994 A JP2011284994 A JP 2011284994A JP 2015043786 A JP2015043786 A JP 2015043786A
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Prior art keywords
dewatering tub
acceleration sensor
tank
motor
tub
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JP2011284994A
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Japanese (ja)
Inventor
真吾 皆本
Shingo Minamoto
真吾 皆本
近藤　信二
Shinji Kondo
信二 近藤
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Panasonic Corp
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Panasonic Corp
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Priority to JP2011284994A priority Critical patent/JP2015043786A/en
Priority to PCT/JP2012/007923 priority patent/WO2013099126A1/en
Publication of JP2015043786A publication Critical patent/JP2015043786A/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
    • 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 
    • D06F23/04—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 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
    • 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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • 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
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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
    • 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

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

Abstract

PROBLEM TO BE SOLVED: To control the rotation frequency of a dewatering tub at low cost by using an acceleration sensor for detecting the vibrations of the dewatering tub.SOLUTION: A washing machine includes: a dewatering tub 5 opened upward; a housing 1 including a side wall part erected so as to surround the dewatering tub 5; a motor 9 for rotationally driving the dewatering tub 5; an acceleration sensor 10 for outputting a detection signal including information on the vibrations of the dewatering tub 5; and a control device for controlling the dewatering tub 5. The control device is made to determine the rotation state of the dewatering tub 5 on the basis of the information acquired from the acceleration sensor 10 on the vibrations of the dewatering tub 5, and can thereby calculate the rotation frequency of the dewatering tub 5 without using rotor position detection means for detecting the rotor position of the motor and without using rotation frequency detection means for detecting the rotation frequency of the motor according to an output signal from the rotor position detection means.

Description

本発明は、脱水槽を回転駆動する手段を有する洗濯機に関するものである。   The present invention relates to a washing machine having means for rotationally driving a dewatering tub.

従来、脱水槽の回転駆動は、脱水槽を回転駆動するモータと、脱水槽を制御する制御装置とを備え、モータのロータ位置を検出するロータ位置検出手段と、前記ロータ位置検出手段の出力信号により前記モータまたは前記攪拌翼の回転数を検知する回転数検知手段により、前記モータまたは前記攪拌翼の回転数が所定の回転数になるように制御されていた（例えば、特許文献１参照）。   Conventionally, the rotational drive of the dewatering tank includes a motor that rotationally drives the dewatering tank, a control device that controls the dewatering tank, a rotor position detecting means that detects the rotor position of the motor, and an output signal of the rotor position detecting means Thus, the rotational speed of the motor or the stirring blade is controlled to be a predetermined rotational speed by the rotational speed detection means for detecting the rotational speed of the motor or the stirring blade (see, for example, Patent Document 1).

図５は、特許文献１に記載された洗濯機の回転数検知手法の実施例のブロック回路図である。   FIG. 5 is a block circuit diagram of an embodiment of the method for detecting the rotational speed of the washing machine described in Patent Document 1. In FIG.

図５に示すように洗濯兼脱水槽に回転自在に配設した攪拌翼と、前記攪拌翼を駆動するモータと、前記モータに電力を供給するスイッチング素子からなるインバータと、前記モータのロータ位置を検出するロータ位置検出手段と、前記ロータ位置検出手段の出力信号により前記モータまたは前記攪拌翼の回転数を検知する回転数検知手段と、前記スイッチング素子の入力電流値を検知する電流検知手段と、前記インバータを制御する制御手段とを備え、前記制御手段は、前記モータを略正弦波で駆動するとともに、前記回転数検知手段からの出力信号により、前記モータまたは前記攪拌翼の回転数が所定回転数になるように前記インバータのスイッチング素子の通電比、すなわち前記モータの印加電圧の制御を行い、脱水槽の回転数を所定の回転数で動作させることを可能としている。   As shown in FIG. 5, a stirring blade rotatably disposed in the washing and dewatering tub, a motor that drives the stirring blade, an inverter that includes a switching element that supplies power to the motor, and a rotor position of the motor Rotor position detection means for detecting; rotation speed detection means for detecting the rotation speed of the motor or the stirring blade based on an output signal of the rotor position detection means; current detection means for detecting an input current value of the switching element; Control means for controlling the inverter, wherein the control means drives the motor with a substantially sinusoidal wave, and the rotational speed of the motor or the stirring blade is rotated at a predetermined speed by an output signal from the rotational speed detection means. The energization ratio of the switching element of the inverter, that is, the applied voltage of the motor is controlled so that the number of rotations of the dehydrating tank is a predetermined value. Is it possible to operate in a converter number.

また、脱水槽は、一般的に、衣類を脱水するために回転する内槽と、内槽を収容する外槽を備える。内槽の周壁には、多数の透孔が形成される。衣類から脱水された水は、透孔を通じて、内槽から排出される。外槽は、内槽から出た水を受け止める。   The dewatering tank generally includes an inner tank that rotates to dehydrate clothing and an outer tank that houses the inner tank. A large number of through holes are formed in the peripheral wall of the inner tank. The water dehydrated from the clothes is discharged from the inner tank through the through holes. The outer tank receives the water from the inner tank.

脱水処理を受ける衣類は、水を含んでいるので、比較的重い。内槽の回転によって、衣類は、内槽の周壁に衝突する。この結果、脱水が促される。その一方で、衣類と内槽の周壁との衝突は、脱水槽の振動を引き起こす。   Clothing that undergoes dehydration treatment is relatively heavy because it contains water. The clothes collide with the peripheral wall of the inner tank by the rotation of the inner tank. As a result, dehydration is promoted. On the other hand, the collision between the clothing and the peripheral wall of the inner tank causes the dehydration tank to vibrate.

特許文献２及び３は、加速度センサを用いて、脱水槽の振動を検出する洗濯機を開示する。特許文献２及び３の開示によれば、加速度センサは、スイッチ素子では検出が困難な高速回転時における脱水槽の振動も検出することができる。   Patent Documents 2 and 3 disclose a washing machine that uses an acceleration sensor to detect the vibration of a dewatering tub. According to the disclosure of Patent Documents 2 and 3, the acceleration sensor can also detect the vibration of the dehydration tank during high-speed rotation, which is difficult to detect with a switch element.

特開２００３−９８６号公報JP 2003-986 A 特開平５−２３７２９０号公報JP-A-5-237290 特開平１０−４３４６９号公報Japanese Patent Laid-Open No. 10-43469

しかしながら、前記従来の構成では、構成部品が増加し、洗濯機の構成が複雑かつ高価となっている。   However, in the conventional configuration, the number of components is increased, and the configuration of the washing machine is complicated and expensive.

本発明は、上記従来の課題を解決するもので、脱水槽の振動に関する情報を含む検出信号を出力するセンサ要素を用いて、（加速度センサを用いて、）脱水槽の回転数を検知することで、前記モータのロータ位置を検出するロータ位置検出手段と、前記ロータ位置検出手段の出力信号により前記モータの回転数を検知する回転数検知手段を取り除くことにより、構成部品の減少及び原価を抑えることを目的としている。   The present invention solves the above-described conventional problems, and detects the rotation speed of a dehydrating tank (using an acceleration sensor) using a sensor element that outputs a detection signal including information related to vibrations of the dehydrating tank. Thus, by removing the rotor position detection means for detecting the rotor position of the motor and the rotation speed detection means for detecting the rotation speed of the motor based on the output signal of the rotor position detection means, the reduction in the number of components and the cost can be suppressed. The purpose is that.

上記目的を達成するために、本発明の洗濯機は、上方に開口した脱水槽と、前記脱水槽を内包する外槽と、前記脱水槽を囲むように立設された側壁部を含む筐体と、前記脱水槽を回転駆動するモータと、前記脱水槽の振動に関する検出信号を出力する加速度センサユニットと、前記脱水槽の回転制御を行う制御装置とを備え、前記加速度センサユニットは前記外槽の上部に取り付けられ、前記制御装置は、前記加速度センサユニットから得た前記脱水槽の振動に関する検出信号を元に前記脱水槽の回転数を算出することを特徴とする。   In order to achieve the above object, a washing machine of the present invention includes a dehydrating tub that opens upward, an outer tub that encloses the dehydrating tub, and a housing that includes a side wall that stands up to surround the dehydrating tub. A motor that rotationally drives the dehydration tank, an acceleration sensor unit that outputs a detection signal relating to the vibration of the dehydration tank, and a control device that controls the rotation of the dehydration tank, the acceleration sensor unit being the outer tank The control device calculates the number of rotations of the dehydration tank based on a detection signal regarding the vibration of the dehydration tank obtained from the acceleration sensor unit.

これにより、従来から構成されていた前記モータのロータ位置を検出するロータ位置検出手段と、前記ロータ位置検出手段の出力信号により前記モータの回転数を検知する回転数検知手段を使用せずに前記脱水槽の回転数を制御することが可能である。   Thus, the rotor position detection means for detecting the rotor position of the motor, which has been conventionally configured, and the rotation speed detection means for detecting the rotation speed of the motor based on the output signal of the rotor position detection means, are used. It is possible to control the rotation speed of the dewatering tank.

本発明の洗濯機は、少数かつ安価な構成で脱水槽の回転数の制御を行なうことができる。   The washing machine of the present invention can control the rotation speed of the dewatering tank with a small number and a low-cost configuration.

本発明の実施の形態１における洗濯機の概略的な断面図Schematic sectional view of the washing machine according to Embodiment 1 of the present invention. 加速度センサで検知した時間変化による加速度値を示すグラフGraph showing acceleration value due to time change detected by acceleration sensor 加速度センサユニットとマイクロコンピュータのブロック図Block diagram of acceleration sensor unit and microcomputer 加速度センサユニットと洗濯機のシステムを示すブロック図Block diagram showing system of acceleration sensor unit and washing machine 従来の回転数検知手法の実施例のブロック回路図Block circuit diagram of an embodiment of a conventional rotational speed detection method

第１の発明は、上方に開口した脱水槽と、前記脱水槽を内包する外槽と、前記脱水槽を囲むように立設された側壁部を含む筐体と、前記脱水槽を回転駆動するモータと、前記脱水槽の振動に関する検出信号を出力する加速度センサユニットと、前記脱水槽の回転制御を行う制御装置とを備え、前記加速度センサユニットは前記外槽の上部に取り付けられ、前記制御装置は、前記加速度センサユニットから得た前記脱水槽の振動に関する検出信号を元に前記脱水槽の回転数を算出することにより、モータのロータ位置を検出するロータ位置検出手段と、ロータ位置検出手段の出力信号により前記モータの回転数を検知する回転数検知手段を使用せずに前記脱水槽の回転数を制御することが可能である。   In a first aspect of the present invention, a dewatering tank that opens upward, an outer tank that encloses the dewatering tank, a housing that includes a side wall that stands up to surround the dewatering tank, and the dehydration tank are driven to rotate. A motor, an acceleration sensor unit that outputs a detection signal related to the vibration of the dehydration tank, and a control device that performs rotation control of the dehydration tank; the acceleration sensor unit is attached to an upper portion of the outer tank; The rotor position detecting means for detecting the rotor position of the motor by calculating the rotational speed of the dewatering tank based on the detection signal relating to the vibration of the dewatering tank obtained from the acceleration sensor unit; It is possible to control the rotational speed of the dewatering tank without using a rotational speed detection means for detecting the rotational speed of the motor by an output signal.

以下、本発明の実施の形態について、図面を参照しながら説明する。また、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

（実施の形態１）
図１は、本発明の実施の形態１における洗濯機の縦断面図、図２は、加速度センサで検知した時間変化による加速度値を示すグラフであり、図３は加速度センサユニットとマイクロコンピュータのブロック図である。図４は加速度センサユニットと洗濯機のシステムを示すブロック図である。 (Embodiment 1)
FIG. 1 is a longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention, FIG. 2 is a graph showing acceleration values due to time changes detected by an acceleration sensor, and FIG. 3 is a block diagram of an acceleration sensor unit and a microcomputer. FIG. FIG. 4 is a block diagram showing a system of the acceleration sensor unit and the washing machine.

図１において、周囲を側壁部によって囲まれている筐体１は、内部に複数のサスペンション２によって弾性的に吊り下げた外槽３と制御手段（図示せず）を設ける構成としている。洗濯・脱水軸４は中空で２軸構造としている。外槽３の内方に設けた脱水槽５は側壁に多数の脱水孔（図示せず）を有するとともに内周の上部に流体バランサ６を有し、中央底部には外周を傾斜面としたナベ型の形状に形成したパルセータ７が配設されている。   In FIG. 1, a casing 1 surrounded by a side wall is provided with an outer tub 3 that is elastically suspended by a plurality of suspensions 2 and a control means (not shown). The washing / dehydrating shaft 4 is hollow and has a biaxial structure. A dewatering tank 5 provided inside the outer tank 3 has a number of dewatering holes (not shown) on the side wall, a fluid balancer 6 at the upper part of the inner periphery, and a pan with a slanted outer periphery at the center bottom. A pulsator 7 formed in the shape of a mold is disposed.

伝達機構部８は内部に洗濯時の減速ギア（図示せず）を内蔵している。モータ９は外槽３の底部に取り付けられ、伝達機構部８を介し、パルセータ７、及び脱水槽５を回転させる。   The transmission mechanism unit 8 has a reduction gear (not shown) for washing inside. The motor 9 is attached to the bottom of the outer tub 3 and rotates the pulsator 7 and the dewatering tub 5 via the transmission mechanism 8.

外槽３の外側面上部には、回転軸方向、及び回転軸に垂直な方向、及びこれら２方向と垂直な方向の、直交３軸方向（ＸＹＺの３方向）の加速度を測定する加速度センサユニット１０（別名：３Ｄセンサユニット）が取り付けられている。   An acceleration sensor unit that measures the acceleration in the orthogonal triaxial direction (three directions of XYZ) in the direction of the rotation axis, the direction perpendicular to the rotation axis, and the direction perpendicular to these two directions is disposed on the outer surface of the outer tub 3. 10 (alias: 3D sensor unit) is attached.

図４は加速度センサユニットと洗濯機のシステムを示すブロック構成である。外槽３の加速度により振動を検知する加速度センサユニット１０、外槽３の水位を検知する水位検知手段３４、使用者が洗濯のコースや時間を設定する入力設定手段３７、洗濯のコースや時間を確認できる表示手段３８、これらからの入力により負荷駆動手段３１を制御する制御手段３３で構成されている。電源スイッチ４１により電源４０がＯＮになると、使用者が入力設定手段３７でコースが設定され、スタート入力がされると洗濯、すすぎ、脱水の各工程が制御手段３３により制御される。   FIG. 4 is a block diagram showing a system of an acceleration sensor unit and a washing machine. Acceleration sensor unit 10 for detecting vibration by acceleration of outer tub 3, water level detecting means 34 for detecting the water level of outer tub 3, input setting means 37 for setting the course and time of washing by the user, and the course and time of washing The display means 38 which can be confirmed, and the control means 33 which controls the load drive means 31 by the input from these are comprised. When the power supply 40 is turned on by the power switch 41, the user sets a course by the input setting means 37. When a start input is made, the washing, rinsing and dehydration processes are controlled by the control means 33.

図３は加速度センサユニット１０とマイクロコンピュータのブロック構成である。加速度センサユニット１０上に、３軸の加速度センサ、Ａ／Ｄ変換器、シリアル通信機能を搭載している。制御装置内にあるマイクロコンピュータは内部のシリアル通信機能を用いて、加速度センサユニット１０と通信し、３軸の加速度データを一定の周期で収得することができる（図３参照）。   FIG. 3 shows a block configuration of the acceleration sensor unit 10 and the microcomputer. On the acceleration sensor unit 10, a three-axis acceleration sensor, an A / D converter, and a serial communication function are mounted. The microcomputer in the control device communicates with the acceleration sensor unit 10 by using an internal serial communication function, and can acquire triaxial acceleration data at a constant cycle (see FIG. 3).

以上のように構成された洗濯機について、その動作、作用を説明する。   About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated.

洗濯機における脱水時に発生する振動は、脱水槽５の回転数を上昇させていく過程において、脱水槽５内の衣類の偏りにより回転軸から外槽３の重心がずれることによって発生する。従って、何らかの共振現象が起こらない限り、振動による加速度変動は、脱水槽５の一回転に対して、一周期の正弦波として現れることとなる（図２参照）。   The vibration generated at the time of dehydration in the washing machine is generated when the center of gravity of the outer tub 3 is shifted from the rotation axis due to the bias of the clothes in the dewatering tub 5 in the process of increasing the rotation speed of the dewatering tub 5. Therefore, unless some resonance phenomenon occurs, the acceleration fluctuation due to vibration appears as a sine wave of one cycle for one rotation of the dewatering tank 5 (see FIG. 2).

任意の時間内におけるこのような正弦波を加速度センサユニット１０で検知し、マイクロコンピュータに正弦波のデータをシリアル通信機能を用いて入力し、制御手段内部にあるマイクロコンピュータで算出することにより脱水槽５の回転数を検知することができる。   Such a sine wave within an arbitrary time is detected by the acceleration sensor unit 10, the sine wave data is input to the microcomputer using a serial communication function, and the dehydration tank is calculated by the microcomputer inside the control means. The number of rotations of 5 can be detected.

さらに制御手段は、脱水槽５の回転数と目標回転数を比較し、目標回転数に達していなければモータ９の回転数を増加させる方向に制御し、目標回転数以上の回転数の場合、モータ９の回転数を減少させる方向に制御することとなる。   Further, the control means compares the rotational speed of the dewatering tank 5 with the target rotational speed, and if it does not reach the target rotational speed, it controls the direction in which the rotational speed of the motor 9 is increased. Control is performed in a direction to decrease the rotational speed of the motor 9.

これにより、モータ９のロータ位置を検出するロータ位置検出手段と、このようなロータ位置検出手段の出力信号によりモータ９の回転数を検知する回転数検知手段を使用しないで済む回転数制御を行うことができる。   Thereby, the rotor position detection means for detecting the rotor position of the motor 9 and the rotation speed control for eliminating the rotation speed detection means for detecting the rotation speed of the motor 9 based on the output signal of the rotor position detection means are performed. be able to.

以上のように、本発明は洗濯機だけでなく、乾燥機等、脱水槽を回転駆動する手段を有する機器の回転数制御を実現するのに有用である。   As described above, the present invention is useful not only for the washing machine but also for realizing the rotational speed control of a device having a means for rotationally driving the dewatering tank, such as a dryer.

３ 外槽
５ 脱水槽
９ モータ
１０ 加速度センサユニット（３Ｄセンサユニット） 3 Outer tank 5 Dehydration tank 9 Motor 10 Acceleration sensor unit (3D sensor unit)

Claims (1)

上方に開口した脱水槽と、前記脱水槽を内包する外槽と、前記脱水槽を囲むように立設された側壁部を含む筐体と、前記脱水槽を回転駆動するモータと、前記脱水槽の振動に関する検出信号を出力する加速度センサユニットと、前記脱水槽の回転制御を行う制御装置とを備え、前記加速度センサユニットは前記外槽の上部に取り付けられ、前記制御装置は、前記加速度センサユニットから得た前記脱水槽の振動に関する検出信号を元に前記脱水槽の回転数を算出することを特徴とする洗濯機。 A dehydrating tub that opens upward, an outer tub that encloses the dehydrating tub, a housing that includes a side wall portion standing around the dehydrating tub, a motor that rotates the dehydrating tub, and the dehydrating tub An acceleration sensor unit that outputs a detection signal relating to the vibration of the dehydration tank, and a control device that performs rotation control of the dehydration tank. The acceleration sensor unit is attached to an upper part of the outer tank, and the control apparatus includes the acceleration sensor unit. The number of rotations of the dewatering tub is calculated based on the detection signal regarding the vibration of the dewatering tub obtained from the washing machine.
JP2011284994A 2011-12-27 2011-12-27 Washing machine Pending JP2015043786A (en)

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