JPH01236092A - Dewatering device for washer - Google Patents
Dewatering device for washerInfo
- Publication number
- JPH01236092A JPH01236092A JP63062432A JP6243288A JPH01236092A JP H01236092 A JPH01236092 A JP H01236092A JP 63062432 A JP63062432 A JP 63062432A JP 6243288 A JP6243288 A JP 6243288A JP H01236092 A JPH01236092 A JP H01236092A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- voltage
- value
- section
- capacitor motor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 43
- 230000018044 dehydration Effects 0.000 claims description 27
- 238000006297 dehydration reaction Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 230000004913 activation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、洗濯機の脱水装置の回転速度制御に関するも
ので・ある1、
従来の技術
従来洗濯機の脱水装置は、特に回転速度制御を行わすに
遠心脱水を行うのが普通であった。−槽式全自動洗濯機
の場合も、起動時に於て低速運転をするために間欠給電
駆動を一定時間だけ組み込んで行うものがほとんとてあ
った。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to rotational speed control of a washing machine dewatering device. It was common practice to perform centrifugal dehydration. - Even in the case of tub-type fully automatic washing machines, most of them incorporate an intermittent power supply drive for a certain period of time in order to operate at low speed when starting up.
また近年モータやプーリに、磁石と検知コイル等を組み
合わせた回転検知装置を装備させて、この回転検知装置
からのフィードバックによって回転速度制御を実現する
機種も商品化されてきている。In addition, in recent years, models have been commercialized in which a motor or pulley is equipped with a rotation detection device that combines a magnet, a detection coil, etc., and the rotation speed is controlled by feedback from this rotation detection device.
発明が解決しようとする課題
しかしこのような回転検知装置は一般的に高価であり、
余分な組立工数が必要となるなと経済的に不利なもので
あった。但しこの脱水装置の回転速度制御自体は洗濯機
の高付加価値化には必要なものであり、その低コスト化
による実現に対する期待は大なるものかある。Problems to be Solved by the Invention However, such rotation detection devices are generally expensive;
This was economically disadvantageous as it required extra assembly man-hours. However, this rotational speed control of the dewatering device itself is necessary for increasing the added value of washing machines, and there are great expectations for its realization by reducing costs.
本発明はこの点に着目してなされたもので、簡便かつ低
コストで回転速度制御を実現する洗濯機の脱水装置を提
供するものである。The present invention has been made with this point in mind, and it is an object of the present invention to provide a washing machine dewatering device that realizes rotational speed control simply and at low cost.
課題を解決するための手段
本発明は上記課題を解決するための洗濯機の脱水装置で
あり、脱水槽を回転駆動するコンデンサモータと、この
コンデンサモータのコンデンサに発生する電圧を検知す
るコンデンサ電圧検知部と、このコンデンサ電圧検知部
の出力を2進データに変換するA 、/ D変換部と、
脱水運転起動直後のA/D変換部の出力を記憶する記憶
部と、脱水運転中のA 、/ D変換部の出力と記憶部
の値との差が設定値以下である場合は前記コンデンサモ
ータに給電し、設定値以上になった場合は所定の時間だ
け給電を休止する比較演算制御部を有した構成としたも
のである。Means for Solving the Problems The present invention is a washing machine dewatering device for solving the above problems, and includes a capacitor motor that rotationally drives a dehydration tank, and a capacitor voltage detector that detects the voltage generated in the capacitor of this capacitor motor. an A/D conversion unit that converts the output of the capacitor voltage detection unit into binary data;
If the difference between the storage unit that stores the output of the A/D conversion unit immediately after the start of dehydration operation and the output of the A/D conversion unit during dehydration operation and the value in the storage unit is less than a set value, the capacitor motor The configuration includes a comparison calculation control section that supplies power to the target and stops power supply for a predetermined period of time when the value exceeds a set value.
作用
本発明は上記した構成により、コンデンサモータのコン
デンサに発生する電圧を検知し、脱水運転起動直後から
の増加量を設定値と比較することにより脱水槽の回転速
度制御を行うものである。Function The present invention uses the above-described configuration to detect the voltage generated in the capacitor of the capacitor motor, and to control the rotational speed of the dehydration tank by comparing the amount of increase immediately after starting the dehydration operation with a set value.
このコンデンサの電圧はモータの回転速度すなわち脱水
槽の回転速度と相関かあり、回転速度が大きいほとこの
電圧も大きい。従ってこのコンデンサ電圧の増加量と設
定値との比較を行うことによって脱水槽の回転速度制御
を行うことができる。The voltage of this capacitor is correlated with the rotational speed of the motor, that is, the rotational speed of the dehydration tank, and the higher the rotational speed, the higher the voltage. Therefore, by comparing the amount of increase in capacitor voltage with a set value, the rotation speed of the dehydration tank can be controlled.
実施例
第1図に本発明を一槽式脱水兼用洗濯機に適用した実施
例を示す。1は外槽、2は脱水槽、3は衣類、4は衣類
3を撹はんするパルセータ、5はパルセータ4または脱
水槽2を回転駆動するためのコンデンサモータ、6はコ
ンデンサモータ5の回転をパルセータ4または脱水槽2
に伝える回転力伝達手段である。モータ5と回転力伝達
手段6の間は、図においては破線で結ばれているが実際
はベルト等の適宜な動力伝達手段によって結ばれている
。7はコンデンサモータ5の起動トルクを生成するコン
デンサである。Embodiment FIG. 1 shows an embodiment in which the present invention is applied to a single-tub type washing machine that also performs dehydration and dehydration. 1 is an outer tank, 2 is a dehydration tank, 3 is clothing, 4 is a pulsator for stirring the clothing 3, 5 is a capacitor motor for rotating the pulsator 4 or the dehydration tank 2, and 6 is a capacitor motor for rotating the capacitor motor 5. Pulsator 4 or dehydration tank 2
It is a means of transmitting rotational force to the Although the motor 5 and the rotational force transmission means 6 are connected by a broken line in the figure, they are actually connected by a suitable power transmission means such as a belt. 7 is a capacitor that generates starting torque for the capacitor motor 5.
Sは商用電源、9はコンデンサモータ5への通電を制御
するトライアック、10は商用電源8を入力としてDC
5Vを出力とする電源部である。S is a commercial power supply, 9 is a triac that controls energization to the capacitor motor 5, and 10 is a DC with the commercial power supply 8 as input.
This is a power supply unit that outputs 5V.
電源部10の出力は他の制御回路の電源として用いられ
ると共にトライアック9のゲート電流を供給するために
、正側は商用電源の片側に接続され負側は制御回路のア
ースに接続されている。The output of the power supply section 10 is used as a power source for other control circuits, and in order to supply the gate current of the triac 9, the positive side is connected to one side of the commercial power supply, and the negative side is connected to the ground of the control circuit.
11はコンデンサモータ5のコンデンサ7に発生する電
圧を検知するコンデンサ電圧検知部である。コンデンサ
7の電圧は交流電圧であるか、抵抗12及び13によっ
て分圧され、ダイオ−1−’ 14によって半波整流さ
れ、更にコンデンサ15及び抵抗16によって構成され
る平滑回路により平滑されて遡当な大きさの直流電圧と
して検知される。抵抗12及び13にはコンデンサ7の
電圧以外に電源部10の出力電圧とトライアック9の電
圧降下分が合成されているが、これらはコンデンサ7に
発生する200V程度の大きさの電圧に比へて無視てき
ると考えられる。Reference numeral 11 denotes a capacitor voltage detection section that detects the voltage generated in the capacitor 7 of the capacitor motor 5. The voltage of the capacitor 7 is an alternating current voltage, or is divided by resistors 12 and 13, half-wave rectified by diode 1-' 14, and further smoothed by a smoothing circuit constituted by capacitor 15 and resistor 16. It is detected as a DC voltage of a certain magnitude. In addition to the voltage of the capacitor 7, the output voltage of the power supply section 10 and the voltage drop of the triac 9 are combined in the resistors 12 and 13, but these are compared to the voltage of about 200 V generated in the capacitor 7. It seems likely that it will be ignored.
17はマイクロコンピュータで、後述する本発明の脱水
槽の回転速度制御以外にも洗濯機全体の動作制御を司っ
ている。18はマイクロコンピュータ17に内蔵されて
いるA/D変換部で、コンデンサ電圧検知部11の出力
(図に示すVc)を人力とし、この電圧の大きさを2進
データに変換して出力する。19はマイクロコンピュー
タ17の中枢部であり、データの転送や比較・演算及び
外部の負荷の制御を行う比較演算制御部である。Reference numeral 17 denotes a microcomputer, which controls the overall operation of the washing machine in addition to controlling the rotational speed of the dehydration tank of the present invention, which will be described later. Reference numeral 18 denotes an A/D conversion section built in the microcomputer 17, which uses the output of the capacitor voltage detection section 11 (Vc shown in the figure) as human power, converts the magnitude of this voltage into binary data, and outputs it. 19 is the central part of the microcomputer 17, and is a comparison calculation control part that transfers data, compares and calculates, and controls external loads.
20は記憶部で、脱水運転起動時のA/D変換部18の
出力データを記憶する。この記憶部20はマイクロコン
ピュータ17のRAMの一部を用いて構成され、比較演
算制御部1つによってデータ転送が行われる。A storage unit 20 stores output data of the A/D conversion unit 18 at the time of starting the dehydration operation. This storage section 20 is constructed using a part of the RAM of the microcomputer 17, and data transfer is performed by one comparison calculation control section.
21は電流増幅用のトランジスタで、マイクロコンピュ
ータ17の比較演算制御部19によって駆動され、抵抗
22を介してそのヘースが接続されている。23はトラ
イアック9のゲート電流制限用の抵抗で、比較演算制御
部19の出力によってトランジスタ21が導通状態にな
ったときにゲート電流が流れてトライアック9が導通す
る。Reference numeral 21 denotes a current amplification transistor, which is driven by the comparison calculation control section 19 of the microcomputer 17, and whose base is connected via a resistor 22. 23 is a resistor for limiting the gate current of the triac 9, and when the transistor 21 is turned on by the output of the comparison calculation control section 19, the gate current flows and the triac 9 is turned on.
次に本実施例の動作原理について述へる。コンデンサ7
の電圧は交流電圧で、コンデンサモータ5の回転速度に
応して増加するが、この電圧はコンデンサ電圧検知部1
1によって分圧・整流・平溺され、適宜な大きさの直流
電圧となってΔ/D変換部18に入力される。この電圧
(第1図に示ずVc)と脱水槽2の回転速度との関係を
第2図に示す。図に示す!〜・B−Cの3本の曲線はそ
れぞれ商用電源8の電圧か110V・100y・90V
の時の特性である。いずれの電圧の時ら脱水槽2の回転
速度か200r l) m以下の場合は変化かみられな
いか、400rpm以上になると直線的に増加してくる
ことか分かる。また各々の電源電圧における特性はほぼ
平行移動していると考えられ、脱水運転起動直後の脱水
!2の回転速度がO近傍の時との差く第2図に示すdV
c)はとの電圧の場合にもほぼ等しい。従ってこのdV
cを検知ずれは約40011〕m以十に於ける脱水WI
2の回転速度が検知できる。Next, the operating principle of this embodiment will be described. capacitor 7
The voltage is an alternating current voltage that increases according to the rotation speed of the capacitor motor 5;
1, the voltage is divided, rectified, and leveled, and the DC voltage is input to the Δ/D converter 18 as a DC voltage of an appropriate magnitude. The relationship between this voltage (Vc not shown in FIG. 1) and the rotational speed of the dehydration tank 2 is shown in FIG. Shown in the diagram! ~・The three curves B-C are the voltage of the commercial power supply 8 or 110V, 100y, and 90V, respectively.
This is the characteristic when . At which voltage is the rotational speed of the dehydration tank 2?If it is less than 200rpm, no change is observed, or if it is more than 400rpm, it increases linearly. In addition, the characteristics at each power supply voltage are thought to move almost in parallel, and the dehydration immediately after starting the dehydration operation! The difference in dV shown in Figure 2 from when the rotational speed of 2 is near O
c) is also approximately equal for voltages of and. Therefore, this dV
The deviation in detection of c is approximately 40011] m or more during dehydration WI.
2 rotation speeds can be detected.
次に本実施例に於て比較演算制御部1って行われろ回転
速度制御の力性について述・\る。第3図にその制御フ
「J−ヂ・1・−1・を示ず。まずI・ランシスタ21
を導通さゼてI・ライアック9を点弧し、フンデンナモ
ータ5への通電を行って脱水運転を開始する。起動直後
に於てΔ/D変換部18により第2図に示すVcを2進
データに変換し、この値を記憶部20に転送してVcl
として記憶させろ。次に運転中はVcの値を常時A/D
変換してVc2とし、Vc2−Vcl、ずなわち第2図
に示すdVcに相当する電圧差が設定値よりも大きくな
ったかとうかを判定する。この電圧差が設定値よりも大
きくなるとトランジスタ21を非導通にしてコンデンサ
モータ5への通電を所定時間だけ休止する。本実施例に
於いてはdVcは0.5V、所定の休止時間は1秒とし
ている。この休止時間が終了すると再びコンデンサモー
タへの通電を再開する。この様な制御を行うことによっ
て第4図に示すように脱水槽2の回転速度を約70Or
’pmに制御することができる。Next, the power of the rotational speed control performed by the comparison calculation control section 1 in this embodiment will be described. FIG.
is turned on, the I.Liac 9 is ignited, and the hydration motor 5 is energized to start dewatering operation. Immediately after startup, the Δ/D conversion section 18 converts Vc shown in FIG. 2 into binary data, transfers this value to the storage section 20, and stores it as Vcl
Let me remember it as Next, during operation, the Vc value is constantly A/D
The voltage difference is converted to Vc2, and it is determined whether the voltage difference between Vc2 and Vcl, that is, the voltage difference corresponding to dVc shown in FIG. 2, has become larger than the set value. When this voltage difference becomes larger than a set value, the transistor 21 is made non-conductive and the supply of electricity to the capacitor motor 5 is stopped for a predetermined period of time. In this embodiment, dVc is 0.5V and the predetermined pause time is 1 second. When this pause time ends, power supply to the capacitor motor is restarted. By performing such control, the rotation speed of the dehydration tank 2 can be adjusted to about 70 Orr, as shown in Fig. 4.
'PM can be controlled.
本発明に於いてコンデンサモータ5への通電を停止した
後所定時間待機する理由は、通電停止後はコンデンサ7
の電圧はOvとなって変化ゼす、回転速度を検知するこ
とかできないからである。In the present invention, the reason for waiting for a predetermined period of time after stopping the power supply to the capacitor motor 5 is that after the power supply is stopped, the capacitor 7
The voltage changes to Ov, which is because it is only possible to detect the rotational speed.
この様に本発明を使用すれば、前述したdVc−/−
と比較する設定値を適宜に選ぶことにより約40Or’
p m以上の所望の脱水槽回転速度を得ることができ
ろ。If the present invention is used in this way, by appropriately selecting the setting value to be compared with the above-mentioned dVc-/-, the voltage will be approximately 40 Or'
It should be possible to obtain a desired dehydration tank rotation speed of pm or more.
発明の効果
以上述へたように、本発明によれば特別な回転センサを
用いることな(容易に脱水槽の回転速度制御を行うこと
かでき、きめ細かな制御か可能となって洗濯機の高付加
価値化を実現することができる。また電源電圧変動に対
しても有効な補正を行うことかてき、安定した回転速度
制御を行うことかできる。さらに必要な付加部品点数も
少なく経済的にメリットかあり、工業的価値の非常に大
きい発明である。Effects of the Invention As mentioned above, according to the present invention, it is possible to easily control the rotation speed of the dehydration tank without using a special rotation sensor, and fine-grained control is possible. It is possible to realize added value.It is also possible to effectively compensate for power supply voltage fluctuations, and stable rotation speed control can be performed.Furthermore, the number of additional parts required is small, making it economically advantageous. This is an invention of great industrial value.
第1図は本発明の洗濯機の脱水装置の一実施例を示すブ
ロック図、第2図は同コンデン号電圧検知部出力と脱水
槽回転速度の関係を示す特性図、第3図は同比較演算制
御部で行われる制御のシーケンスを示すフローヂキート
、第4図は本実施例の洗濯機の脱水装置を使用した場合
の回転速−8−一
度制御の状態を示す特性図である。
2・・・脱水槽、5・・・コンデンサモータ、7・・・
コンデンサ、11・・・コンデンサ電圧検知部、18・
・・A/D変換部、19・・・比較演算制御部、20・
・・記憶部。
代理人の氏名 弁理士 中尾敏男 はか1名。
1− 外■
2− 航71((
3−−一駁厘
第 1 図 軒−バ
ルゞ−75−−−コンテ゛ンブモーグ
7−−−]シテ”Jブ
説7)(糟回転敷(ram)
第3図
WD
−−,1−m−“Fig. 1 is a block diagram showing an embodiment of the dewatering device for a washing machine according to the present invention, Fig. 2 is a characteristic diagram showing the relationship between the output of the condenser voltage detection section and the rotation speed of the dehydrating tank, and Fig. 3 is a comparison of the same. FIG. 4 is a flowchart showing the sequence of control performed by the arithmetic control section. FIG. 4 is a characteristic diagram showing the state of rotational speed -8-once control when the washing machine dewatering device of this embodiment is used. 2... Dehydration tank, 5... Capacitor motor, 7...
Capacitor, 11... Capacitor voltage detection section, 18.
... A/D conversion section, 19... Comparison calculation control section, 20.
...Memory section. Name of agent: Patent attorney Toshio Nakao (1 person) 1- Out ■ 2- Navigation 71 ((3--Ippa-Rin No. 1 Fig. Eaves-Balls-75--- Containment Morgue 7---] Shite" Jbu Theory 7) (Ram) Figure 3 WD --, 1-m-"
Claims (1)
ンサモータのコンデンサに発生する電圧を検知するコン
デンサ電圧検知部と、このコンデンサ電圧検知部の出力
を2進データに変換するA/D変換部と、脱水運転起動
直後の前記A/D変換部の出力を記憶する記憶部と、脱
水運転中の前記A/D変換部の出力と前記記憶部の値と
の差が設定値以下である場合は前記コンデンサモータに
給電し、前記設定値以上になった場合は所定の時間だけ
給電を休止する比較演算制御部を有する洗濯機の脱水装
置。A capacitor motor that rotationally drives the dehydration tank, a capacitor voltage detection section that detects the voltage generated in the capacitor of the capacitor motor, an A/D conversion section that converts the output of the capacitor voltage detection section into binary data, and a dehydration tank. A storage section that stores the output of the A/D conversion section immediately after the start of operation, and when the difference between the output of the A/D conversion section during dehydration operation and the value of the storage section is less than a set value, the capacitor A dewatering device for a washing machine, which has a comparison calculation control section that supplies power to a motor and stops the power supply for a predetermined time when the power exceeds the set value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63062432A JPH01236092A (en) | 1988-03-16 | 1988-03-16 | Dewatering device for washer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63062432A JPH01236092A (en) | 1988-03-16 | 1988-03-16 | Dewatering device for washer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01236092A true JPH01236092A (en) | 1989-09-20 |
Family
ID=13200014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63062432A Pending JPH01236092A (en) | 1988-03-16 | 1988-03-16 | Dewatering device for washer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01236092A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05146579A (en) * | 1991-11-28 | 1993-06-15 | Sanyo Electric Co Ltd | Washing machine |
EP1721860A1 (en) * | 2005-05-09 | 2006-11-15 | Yorkshire Technology Limited | Motor control system |
-
1988
- 1988-03-16 JP JP63062432A patent/JPH01236092A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05146579A (en) * | 1991-11-28 | 1993-06-15 | Sanyo Electric Co Ltd | Washing machine |
EP1721860A1 (en) * | 2005-05-09 | 2006-11-15 | Yorkshire Technology Limited | Motor control system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6445879B1 (en) | Apparatus and method for braking a washing machine | |
KR100425723B1 (en) | Method of detecting the weight of laundry in washing machine of sensorless bldc motor | |
US6822409B2 (en) | Circuit using current limiting to reduce power consumption of actuator with DC brush motor | |
US5726550A (en) | Motor control system for centrifuge | |
TW201308874A (en) | Motor diving and control circuit, and control method thereof | |
US5077824A (en) | Direct-current motor control | |
EP1710905A1 (en) | Motor control circuit for sewing machine | |
JPH01236092A (en) | Dewatering device for washer | |
Meghana et al. | Sensorless Start-Up Control for BLDC Motor using Initial Position Detection Technique | |
JPH0219199A (en) | Dewatering device for washing machine | |
JP4143912B2 (en) | Electric motor control device | |
KR100803772B1 (en) | Washing machine and its Electric braking method | |
JPH11252970A (en) | Power generator and electric washing machine therewith | |
JP4174999B2 (en) | DC / DC converter | |
JP3048099B2 (en) | Dehydration operation control device for washing machine | |
JP4016487B2 (en) | Washing machine | |
KR100504462B1 (en) | Current limiting device of the washing machine and its current limiting method | |
JPS60143610A (en) | Solenoid driving circuit | |
JP3046695B2 (en) | Dehydration operation control device for washing machine | |
US10396691B1 (en) | Motor control circuit system | |
JP2003033069A (en) | Inverter controller and washing machine using it | |
KR100315814B1 (en) | Apparatus &the method for voltage control in case of braking in washer | |
KR100341925B1 (en) | Breaking control method in a BLDC electric washing machine | |
JPS6198187A (en) | Control circuit for inverter | |
Gupta | Intelligent Induction Motor Drive |