JPS62224397A - Load detector of electric washing machine - Google Patents

Load detector of electric washing machine

Info

Publication number
JPS62224397A
JPS62224397A JP61068023A JP6802386A JPS62224397A JP S62224397 A JPS62224397 A JP S62224397A JP 61068023 A JP61068023 A JP 61068023A JP 6802386 A JP6802386 A JP 6802386A JP S62224397 A JPS62224397 A JP S62224397A
Authority
JP
Japan
Prior art keywords
load
motor
detection means
pulsator
washing machine
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
Application number
JP61068023A
Other languages
Japanese (ja)
Inventor
沢辺 宇一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP61068023A priority Critical patent/JPS62224397A/en
Publication of JPS62224397A publication Critical patent/JPS62224397A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Washing Machine And Dryer (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、電気洗濯機に投入された洗濯量を検出する負
荷検出装置に関し、水流又は洗濯時間を自動的に切り替
えるために用いられる。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a load detection device that detects the amount of laundry put into an electric washing machine, and is used to automatically switch water flow or washing time.

(従来の技術) 第3図乃至第5図は、従来の電気洗濯機における負荷検
出装置の一例を示す図である。
(Prior Art) FIGS. 3 to 5 are diagrams showing an example of a load detection device in a conventional electric washing machine.

第3図は電気洗濯機におけるパルセータの駆動系を示す
概略図であり、周知のように1は洗濯槽、4はパルセー
タ、5はパルセータ4とプーリー6とを連結する軸、7
はモータ9に取付けられたプーリー、8は前記プーリー
6と7とを連結している駆動ベルトである。
FIG. 3 is a schematic diagram showing the drive system of a pulsator in an electric washing machine, and as is well known, 1 is a washing tub, 4 is a pulsator, 5 is a shaft connecting the pulsator 4 and the pulley 6, and 7
is a pulley attached to a motor 9, and 8 is a drive belt connecting the pulleys 6 and 7.

第4図は従来の負荷検出回路を示す回路図であリ、等価
回路で示したモータ12が2つのトライアック16,1
7によって電流制御されるように配置されている。トラ
イアック16.17のゲートに入力される制御信号は、
直流電源29によってバイアス電源が供給される2つの
回路素子20゜21によって制御されている。20は例
えばトランジスタアレイによる素子で、21はマイクロ
コンピュータによって構成されている。前記モータ12
と商用電源28間に設けたカレントトランス22を介し
て交流電流が検出され、この交流電流はダイオード24
によって整流され、コンデンサ27の両端にかかる直流
電圧となり、前記マイクロコンピュータ21に入力され
ている。モータ12は図面においては巻き線13.14
及び進相コンデンサ15のΔ結線によって構成されてい
る。
FIG. 4 is a circuit diagram showing a conventional load detection circuit, in which the motor 12 shown in the equivalent circuit has two triacs 16 and 1.
The current is controlled by 7. The control signal input to the gate of triac 16.17 is
It is controlled by two circuit elements 20 and 21 which are supplied with bias power by a DC power supply 29. 20 is an element such as a transistor array, and 21 is a microcomputer. The motor 12
An alternating current is detected through the current transformer 22 provided between the commercial power supply 28 and the
The voltage is rectified by the DC voltage applied to both ends of the capacitor 27, and is input to the microcomputer 21. The motor 12 has windings 13 and 14 in the drawings.
and a phase advancing capacitor 15 connected in a delta manner.

かかる装置において、モータ12をONにすると巻き線
のインダクタンス成分によって当初大きな突入電流が流
れ、その後パルセータ4に洗濯物が当る度に電流値は小
さくなり、比較的安定な振幅を繰返す(第5図参照)。
In such a device, when the motor 12 is turned on, a large inrush current initially flows due to the inductance component of the winding, and thereafter the current value decreases each time the laundry hits the pulsator 4, and a relatively stable amplitude is repeated (Fig. 5). reference).

第5図において、洗濯量が多ければこの振幅Δ■は大き
くなり、洗濯量が少なければ振幅ΔIは小さくなる。す
なわち、波形31は洗濯負荷量が多い場合、波形32は
洗濯負荷量が中程度で、波形33は洗濯負荷量が少ない
場合を示している。このようにして振幅Δ■を検知する
ことによって洗濯負荷量を測定していた。
In FIG. 5, if the amount of laundry is large, the amplitude Δ■ becomes large, and if the amount of washing is small, the amplitude ΔI becomes small. That is, waveform 31 shows a case where the washing load is large, waveform 32 shows a case where the washing load is medium, and waveform 33 shows a case where the washing load is small. In this way, the amount of washing load was measured by detecting the amplitude Δ■.

(考案が解決しようとする問題点) しかるに、このようにパルセータに当る洗濯物によって
洗濯負荷量を検出しているのでは、必ずしも負荷量に応
じて均一に振幅が決まるわけではなく、正確な洗濯負荷
量を測定できないという問題があった。
(Problem that the invention aims to solve) However, if the amount of washing load is detected by the laundry hitting the pulsator in this way, the amplitude is not necessarily determined uniformly depending on the amount of load, and accurate washing cannot be achieved. There was a problem that the amount of load could not be measured.

(問題点を解決するための手段) 本考案は、パルセータを駆動するモータが回転している
時に流れる電流値を検出する第1検出手段と、前記モー
タが回転状態から停止状態に移行した時に、前記パルセ
ータの継続する回転数相当量を検出する第2検出手段と
を備え、これら第1検出手段及び第2検出手段の出力信
号から総合的に洗濯物の負荷量を検出するものである。
(Means for Solving the Problems) The present invention includes a first detection means that detects a current value flowing when a motor that drives a pulsator is rotating, and a first detection means that detects a current value flowing when a motor that drives a pulsator is rotating, and when the motor shifts from a rotating state to a stopped state. and a second detection means for detecting an amount equivalent to the number of continuous rotations of the pulsator, and the load amount of laundry is comprehensively detected from the output signals of the first detection means and the second detection means.

(作用) 第1検出手段によって洗濯負荷量に応じてパルセータを
駆動するモータに流れる電流振幅を測定するとともに、
第2検出手段によってモータがOFFしてから慣性力で
パルセータが継続回転する回転数相当量を検出し、これ
ら2つの検出手段のデータをもとに総合的に負荷量が検
出される。
(Function) The first detection means measures the amplitude of the current flowing through the motor that drives the pulsator according to the amount of washing load, and
The second detection means detects an amount equivalent to the number of revolutions at which the pulsator continues to rotate due to inertia force after the motor is turned off, and the load amount is comprehensively detected based on the data of these two detection means.

(実施例) 以下、本発明の実施例について図面を参照して説明する
(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

第1図は、本発明に係る電気洗濯機の負荷検出装置の実
施例を示す回路図である。
FIG. 1 is a circuit diagram showing an embodiment of a load detection device for an electric washing machine according to the present invention.

同図において、従来の回路構成と同一構成素子には同一
符号を付している。
In the figure, the same reference numerals are given to the same constituent elements as those in the conventional circuit configuration.

第1図においては、カレントトランス22が進相コンデ
ンサ15と直列状態に設けられており、このカレントト
ランス22は、モータ12が回転している時に流れる負
荷電流を検出するだけでなく、モータ12が停止した場
合にパルセータ4等の慣性力によって当該パルセータ4
の回転が継続するため、この回転力に応じて発生する電
流値をも検出する。マイクロコンピュータ21の入力端
子Itには従来と同じく半波整流された電圧が入力され
ている。一方、入力端子■2にはカレントトランス22
で発生された正弦波に近い波形を矩形波に変換する波形
成形回路30を介してパルス信号が入力されている。そ
して、モータ12がONになっている時は、マイクロコ
ンピュータ21の入力端子■、には第5図に示す波形が
入力され、従来と同じく振幅ΔIを測定して洗濯物負荷
量を測定する。一方、モータ12がONからOFFへ移
行した場合には、モータ12自身の慣性力やパルセータ
4の慣性力で回転が継続されるので、モータ12が発電
機となって進相コンデンサ15に電流を流す。この電?
tLXは前記マイクロコンピュータ21の入力端子I、
に波形成形されて入力される。
In FIG. 1, a current transformer 22 is provided in series with a phase advance capacitor 15, and this current transformer 22 not only detects the load current flowing when the motor 12 is rotating, but also detects the load current flowing when the motor 12 is rotating. When the pulsator 4 stops, the inertia of the pulsator 4, etc.
Since the rotation continues, the current value generated in response to this rotational force is also detected. A half-wave rectified voltage is input to the input terminal It of the microcomputer 21, as in the conventional case. On the other hand, input terminal ■2 has a current transformer 22
A pulse signal is inputted through a waveform shaping circuit 30 that converts a waveform similar to a sine wave generated by a waveform into a rectangular wave. When the motor 12 is turned on, the waveform shown in FIG. 5 is input to the input terminal (2) of the microcomputer 21, and the laundry load is measured by measuring the amplitude ΔI as in the conventional method. On the other hand, when the motor 12 shifts from ON to OFF, the motor 12 continues to rotate due to its own inertia force and the inertia force of the pulsator 4, so the motor 12 acts as a generator and supplies current to the phase advance capacitor 15. Flow. This electric?
tLX is the input terminal I of the microcomputer 21;
The signal is waveform-shaped and input.

この波形を第2図に例示している。This waveform is illustrated in FIG.

第2図において、モータ12がOFFされているのでモ
ータ12の回転数は順次低下してくるが、洗濯負荷量が
多い時にはパルセータ4に洗濯物が度々光るのでパルセ
ータ4の回転は短時間で止められて、前記マイクロコン
ピュータ21に入力されるパルス数は少なくなる。逆に
洗濯負荷量が少ない時にはパルセータ4に洗濯物が当る
確率は小さいので入力されるパルス数は多くなる。この
ようにして、モータ12が停止した後にも洗濯負荷量を
検出することができ、すでに負荷電流値ΔIによって求
めた洗濯負荷量とから、例えば平均値を求める等によっ
て総合的に負荷量を測定できることになる。
In FIG. 2, since the motor 12 is turned off, the rotation speed of the motor 12 gradually decreases, but when the washing load is large, the pulsator 4 often stops rotating because the laundry often flashes on the pulsator 4. As a result, the number of pulses input to the microcomputer 21 is reduced. Conversely, when the amount of laundry load is small, the probability that the laundry will hit the pulsator 4 is small, so the number of input pulses increases. In this way, the amount of washing load can be detected even after the motor 12 has stopped, and the amount of washing load can be comprehensively measured by, for example, calculating the average value from the amount of washing load already determined by the load current value ΔI. It will be possible.

なお、モータ12がOFJしている時に流れる負荷電流
をとるために進相コンデンサ15にカレントトランス2
2を直列状態に接続しているが、モータ12の負荷電流
と進相コンデンサ15に流れる電流とは比例するので特
に問題はなく、もちろん従来と同じようにモータ12の
負荷電流の検出位置を従来と同じ場所に設けてもよく、
この場合は2つのカレントトランスを設けることになる
In addition, a current transformer 2 is connected to the phase advancing capacitor 15 in order to take the load current that flows when the motor 12 is OFJ.
2 are connected in series, but since the load current of the motor 12 and the current flowing through the phase advance capacitor 15 are proportional, there is no particular problem. It may be placed in the same location as
In this case, two current transformers will be provided.

(発明の効果) 以上述べたように、本発明によれば、従来と同じ電流変
化分による洗濯負荷量の測定とパルセータ等の慣性力に
よる回転数が同時に測定できるので、従来以上に正確に
洗濯負荷量を測定することができる。また、従来の回路
に波形成形回路を付加すればよいので、構成も極めて簡
単である。
(Effects of the Invention) As described above, according to the present invention, it is possible to simultaneously measure the amount of washing load using the same amount of current change as before and the rotation speed due to the inertial force of a pulsator, etc., so washing can be done more accurately than before. Load amount can be measured. Furthermore, since a waveform shaping circuit can be added to a conventional circuit, the configuration is extremely simple.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係る電気洗濯機の負荷検出装置の実施
例を示す回路図、第2図はモータが停止した時に流れる
電流値の波形を示す波形図、第3図乃至第5図は従来例
を示す図であり、第3図は電気洗濯機におけるパルセー
タの駆動系を示す一部断面とした正面図、第4図は負荷
検出装置を示す回路図、第5図はモータの負荷電流の測
定例を示す波形図である。 4・・・パルセータ    9・・・モータ21・・・
マイクロコンピュータ 22・・・カレントトランス 30・・・波形成形回路 第2図 第4図
Figure 1 is a circuit diagram showing an embodiment of the load detection device for an electric washing machine according to the present invention, Figure 2 is a waveform diagram showing the waveform of the current flowing when the motor stops, and Figures 3 to 5 are FIG. 3 is a partially sectional front view showing a pulsator drive system in an electric washing machine, FIG. 4 is a circuit diagram showing a load detection device, and FIG. 5 is a diagram showing a motor load current. FIG. 2 is a waveform diagram showing an example of measurement. 4... Pulsator 9... Motor 21...
Microcomputer 22...Current transformer 30...Waveform shaping circuit Fig. 2 Fig. 4

Claims (1)

【特許請求の範囲】 1)パルセータを駆動するモータが回転している時に流
れる電流値を検出する第1検出手段と、 前記モータが回転状態から停止状態に移行 した時に、前記パルセータの継続する回転数相当量を検
出する第2検出手段とを備え、これら第1検出手段及び
第2検出手段の出力信号から総合的に洗濯物の負荷量を
検出することを特徴とする電気洗濯機の負荷検出装置。 2)前記第2検出手段は、パルセータが継続して回転す
ることによってモータ内部に発生する電流値である特許
請求の範囲第1項記載の電気洗濯機の負荷検出装置。 3)前記第1検出手段及び第2検出手段は、モータの進
相コンデンサに流れる電流を検出するカレントトランス
である特許請求の範囲第1項記載の電気洗濯機の負荷検
出装置。 4)前記第1検出手段は、モータがONしてから一定時
間後から流れる電流値を検出するものである特許請求の
範囲第1項記載の電気洗濯機の負荷検出装置。
[Scope of Claims] 1) A first detection means for detecting a current value flowing when a motor that drives a pulsator is rotating; and a first detection means that detects a current value flowing when a motor that drives a pulsator is rotating; load detection means for an electric washing machine, characterized in that the load amount of laundry is comprehensively detected from the output signals of the first detection means and the second detection means. Device. 2) The load detection device for an electric washing machine according to claim 1, wherein the second detection means is a current value generated inside the motor due to continuous rotation of the pulsator. 3) The load detecting device for an electric washing machine according to claim 1, wherein the first detecting means and the second detecting means are current transformers that detect current flowing through a phase advance capacitor of the motor. 4) The load detection device for an electric washing machine according to claim 1, wherein the first detection means detects the value of the current flowing after a certain period of time after the motor is turned on.
JP61068023A 1986-03-26 1986-03-26 Load detector of electric washing machine Pending JPS62224397A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61068023A JPS62224397A (en) 1986-03-26 1986-03-26 Load detector of electric washing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61068023A JPS62224397A (en) 1986-03-26 1986-03-26 Load detector of electric washing machine

Publications (1)

Publication Number Publication Date
JPS62224397A true JPS62224397A (en) 1987-10-02

Family

ID=13361798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61068023A Pending JPS62224397A (en) 1986-03-26 1986-03-26 Load detector of electric washing machine

Country Status (1)

Country Link
JP (1) JPS62224397A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01119290A (en) * 1987-10-30 1989-05-11 Matsushita Electric Ind Co Ltd Detector for load of cloth in washer
JPH01185293A (en) * 1988-01-20 1989-07-24 Matsushita Electric Ind Co Ltd Controller for washing machine
JPH01185289A (en) * 1988-01-18 1989-07-24 Matsushita Electric Ind Co Ltd Load detector for washing machine
JPH01185292A (en) * 1988-01-18 1989-07-24 Matsushita Electric Ind Co Ltd Load detecting device for washing machine
US5233847A (en) * 1990-10-15 1993-08-10 Kabushiki Kaisha Toshiba Washing machine
JP2010284288A (en) * 2009-06-11 2010-12-24 Panasonic Corp Washing machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132366A (en) * 1978-04-04 1979-10-15 Toshiba Corp Device for operating washing machine
JPS58195589A (en) * 1982-05-10 1983-11-14 松下電器産業株式会社 Washer
JPS58195592A (en) * 1982-05-10 1983-11-14 松下電器産業株式会社 Apparatus for detecting amount of washing article of washer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132366A (en) * 1978-04-04 1979-10-15 Toshiba Corp Device for operating washing machine
JPS58195589A (en) * 1982-05-10 1983-11-14 松下電器産業株式会社 Washer
JPS58195592A (en) * 1982-05-10 1983-11-14 松下電器産業株式会社 Apparatus for detecting amount of washing article of washer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01119290A (en) * 1987-10-30 1989-05-11 Matsushita Electric Ind Co Ltd Detector for load of cloth in washer
JPH01185289A (en) * 1988-01-18 1989-07-24 Matsushita Electric Ind Co Ltd Load detector for washing machine
JPH01185292A (en) * 1988-01-18 1989-07-24 Matsushita Electric Ind Co Ltd Load detecting device for washing machine
JPH01185293A (en) * 1988-01-20 1989-07-24 Matsushita Electric Ind Co Ltd Controller for washing machine
US5233847A (en) * 1990-10-15 1993-08-10 Kabushiki Kaisha Toshiba Washing machine
JP2010284288A (en) * 2009-06-11 2010-12-24 Panasonic Corp Washing machine

Similar Documents

Publication Publication Date Title
EP1850471B1 (en) System and method for transient-based motor speed estimation with transient excitation
US4959596A (en) Switched reluctance motor drive system and laundering apparatus employing same
KR900004091A (en) DC current sensing method and apparatus of any one pole in the conductor, and electronic commutating motor controller responsive to the sensing motor current
US6249094B1 (en) Method and apparatus for determining the rotor position of synchronous motors
US9071181B2 (en) Three phase brushless DC motor sensor-less control using sinusoidal drive method and apparatus
JPS63234858A (en) Winding temperature detector for brushless dc motor
JP2721136B2 (en) Washing machine cloth load detection method
US5233847A (en) Washing machine
JPH06113585A (en) Position detection device for brushless dc motor using time-difference method without hall-effect device
JPH11160337A (en) Method for detecting rotating speed of mechanically rectified dc motor
JPH0813196B2 (en) Position detection of brushless DC motor
JP2008080173A (en) Cloth quantity sensing device for washing machine and its method
JP2010504077A (en) Method of operating an electronic rectifying electric motor
JPS62224397A (en) Load detector of electric washing machine
JP4030606B2 (en) X-ray tube rotary anode drive motor rotation speed monitoring device
JPH08331894A (en) Method and system for detecting internal rotation information of ac motor
JPS62176492A (en) Washing article amount detector of washing machine
KR940008628B1 (en) Laundry quantity and quality sensing apparatus
JPH03222993A (en) Operation control method for washing machine
KR900007597Y1 (en) Washing agents supplying apparatus
KR19990074896A (en) Detection circuit of zero crossing point of counter electromotive force
JP4288628B2 (en) Synchronous motor phase detection method and drive device
KR100292528B1 (en) A control method of brushless dc motor in washing machine
JPS61240996A (en) Apparatus for detecting washing article quantity of washing machine
KR100690641B1 (en) Forward/reverse rotation change timing point detection method for bldc motor