JPH0671084A - Washing machine - Google Patents
Washing machineInfo
- Publication number
- JPH0671084A JPH0671084A JP4227198A JP22719892A JPH0671084A JP H0671084 A JPH0671084 A JP H0671084A JP 4227198 A JP4227198 A JP 4227198A JP 22719892 A JP22719892 A JP 22719892A JP H0671084 A JPH0671084 A JP H0671084A
- Authority
- JP
- Japan
- Prior art keywords
- washing
- optical sensor
- light
- output
- 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.)
- Granted
Links
Landscapes
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 受発光素子間への泡の侵入を防止し、光セン
サの出力調整を安価に行う。
【構成】 給水された水は、排水管１０からノズル９に
侵入する。光センサ１５により測定部１６を通して水の
光透過度を検知する。光センサ１５の出力値を出力基準
値となるように受光素子の感度抵抗を調整する。
(57) [Summary] (Corrected) [Purpose] Preventing bubbles from entering between the light emitting and receiving elements and adjusting the output of the optical sensor at low cost. [Structure] The supplied water enters a nozzle 9 from a drain pipe 10. The optical sensor 15 detects the light transmittance of water through the measuring unit 16. The sensitivity resistance of the light receiving element is adjusted so that the output value of the optical sensor 15 becomes the output reference value.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、洗濯槽内の液体の汚濁
度を検知する光センサを有した洗濯機に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine having an optical sensor for detecting the degree of contamination of liquid in a washing tub.
【０００２】[0002]
【従来の技術】近年、受発光素子からなる光センサを用
いて、洗濯槽内の液体（洗濯水あるいはすすぎ水）の汚
濁度を検知し、この検知結果により各洗濯工程の制御を
行なう全自動洗濯機が多く提案されている。2. Description of the Related Art In recent years, an optical sensor consisting of a light emitting and receiving element is used to detect the degree of contamination of a liquid (washing water or rinsing water) in a washing tub, and the result of this detection is used to control each washing process. Many washing machines have been proposed.
【０００３】この種の洗濯機において、光センサにより
汚濁度を正確に検知するために、例えば、特公昭６２−
１６１２０号公報に開示されているように、ホルダーに
より受発光素子を排水経路の外表面に直接もしくは間接
的に面接触させて、排水経路を介して対向配置させてい
た。In this type of washing machine, in order to accurately detect the degree of contamination by an optical sensor, for example, Japanese Patent Publication No. 62-
As disclosed in Japanese Patent No. 16120, the light receiving and emitting element is brought into direct or indirect surface contact with the outer surface of the drainage path by the holder, and the light receiving and emitting elements are arranged to face each other through the drainage path.
【０００４】また、光センサの発光素子および受光素子
への汚れ付着や部品のバラツキあるいは経時的な変化
（長期使用による測定部の光透過度の低下）等により、
汚濁度を誤検知することがある。このため、特開平３−
１３１２９８号公報に開示されているように、光センサ
により検知した給水時の水の光透過度が初期の基準値と
なるよう発光素子を制御して、光センサの出力調整を行
い、上記の誤検知の原因となる光透過率の誤差を補正し
ていた。Further, due to contamination of the light emitting element and the light receiving element of the optical sensor, variations in parts, or changes over time (decrease in light transmittance of the measuring portion due to long-term use), etc.
The pollution level may be erroneously detected. For this reason, JP-A-3-
As disclosed in Japanese Patent No. 131298, the light emitting element is controlled so that the light transmittance of water at the time of water supply detected by the optical sensor becomes an initial reference value, and the output of the optical sensor is adjusted. The error of the light transmittance which causes the detection was corrected.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、特公昭
６２−１６１２０号公報の従来技術においては、排水経
路の汚れや受発光素子の部品のバラツキ等により、汚濁
度を誤検知する可能性がある。また、排水経路内の発光
素子と受光素子の間に洗濯撹拌等により発生する泡が入
ることにより、正確に洗濯水の汚濁度を検出できない。However, in the conventional technique disclosed in Japanese Patent Publication No. 62-16120, there is a possibility that the degree of pollution may be erroneously detected due to dirt in the drainage path, variations in parts of the light emitting / receiving element, or the like. Further, the bubbles generated by washing agitation and the like enter between the light emitting element and the light receiving element in the drainage path, so that the contamination degree of the washing water cannot be accurately detected.
【０００６】特開平３−１３１２９８号公報の従来技術
においては、出力値の調整を発光素子で行うと、マイク
ロコンピュータにＰＷＭ出力端子やＤ／Ａ変換器が必要
となる。また、発光素子の電流は１０〜５０ｍＡ程度流
れるため、前記Ｄ／Ａ変換器にトランジスタが必要とな
るなど部品点数が多く、高価なものになっていた。In the prior art disclosed in Japanese Patent Laid-Open No. 3-131298, if the light emitting element is used to adjust the output value, the microcomputer requires a PWM output terminal and a D / A converter. Further, since the current of the light emitting element flows about 10 to 50 mA, a transistor is required for the D / A converter, resulting in a large number of parts and an increase in cost.
【０００７】本発明は、上記に鑑み、受発光素子間への
泡の侵入を防止し、光センサの出力補正が安価に行える
洗濯機を提供する。In view of the above, the present invention provides a washing machine capable of preventing bubbles from entering between the light emitting and receiving elements and correcting the output of the optical sensor at low cost.
【０００８】[0008]
【課題を解決するための手段】本発明請求項１による課
題解決手段は、水槽２内の液体の光透過度を検知する発
光素子１８および受光素子１９からなる光センサ１５
と、該光センサ１５の出力信号により洗濯工程を制御す
る制御装置２２とを備え、受光素子１９に感度調整用抵
抗２９〜３２が接続され、制御装置２２に、水槽２内に
給水される水に対する光センサ１５の出力値が出力基準
値となるように受光素子１９の感度抵抗を調整する出力
補正手段を備えたものである。According to a first aspect of the present invention, a light sensor 15 comprising a light emitting element 18 and a light receiving element 19 for detecting the light transmittance of a liquid in a water tank 2 is provided.
And a control device 22 for controlling the washing process based on the output signal of the optical sensor 15, the resistance adjusting resistors 29 to 32 are connected to the light receiving element 19, and the water supplied to the water tank 2 is supplied to the control device 22. The output correction means for adjusting the sensitivity resistance of the light receiving element 19 is provided so that the output value of the optical sensor 15 with respect to the output reference value becomes the output reference value.
【０００９】請求項２による課題解決手段は、水槽２の
底部の排水口２ａに排水路１０が接続され、排水口２ａ
よりも下側の排水路１０に水槽２内の液体に空気を供給
する送風路１３が接続され、該送風路１３に水槽２内の
液体が流入する透光性を有した測定部１６が形成され、
該測定部１６に水槽２内の液体の光透過度を検知する発
光素子１８および受光素子１９からなる光センサ１５が
装着されたものである。According to a second aspect of the present invention, the drainage channel 10 is connected to the drainage port 2a at the bottom of the water tank 2, and the drainage port 2a is provided.
A ventilation passage 13 for supplying air to the liquid in the water tank 2 is connected to the drainage passage 10 below the water drainage passage 10, and a translucent measuring unit 16 is formed to allow the liquid in the water tank 2 to flow into the ventilation passage 13. Is
An optical sensor 15 including a light emitting element 18 and a light receiving element 19 for detecting the light transmittance of the liquid in the water tank 2 is attached to the measuring section 16.
【００１０】請求項３による課題解決手段は、光センサ
１５の出力信号により洗濯工程を制御する制御装置２２
が設けられ、前記制御装置２２に、受光素子１９の感度
抵抗を調整する請求項１記載の出力補正手段と、感度調
整後に光センサ１５の出力初期値を記憶する記憶手段３
５と、光センサ１５の出力値と出力初期値から水の汚れ
を検知して洗濯条件を決定する洗濯実行手段とを備えた
ものである。The means for solving problems according to claim 3 is a control device 22 for controlling the washing process by the output signal of the optical sensor 15.
The output correction means according to claim 1 for adjusting the sensitivity resistance of the light receiving element 19, and the storage means 3 for storing the initial output value of the optical sensor 15 after the sensitivity adjustment.
5 and the washing execution means for detecting the dirt of water from the output value of the optical sensor 15 and the initial output value to determine the washing condition.
【００１１】請求項４による課題解決手段は、送風路１
３の排水路１０と連通する連通口９ａの周囲に、洗濯中
の撹拌により発生する泡の侵入を防ぐため排水路１０内
に突出する突起１４が設けられたものである。According to a fourth aspect of the present invention, a means for solving the problems is the air passage 1
Around the communication port 9a communicating with the drainage channel 10 of No. 3, a protrusion 14 protruding into the drainage channel 10 is provided in order to prevent invasion of bubbles generated by stirring during washing.
【００１２】請求項５による課題解決手段は、測定部１
３の上部に空気溜まり１７が設けられたものである。[0012] The problem solving means according to claim 5 is the measuring unit 1
3, an air reservoir 17 is provided on the upper part of 3.
【００１３】[0013]
【作用】上記課題解決手段において、給水された水は、
排水路１０から送風路１３に侵入し、光センサ１５が測
定部１６を通してこの水の光透過度を検知する。このと
きの光センサ１５の出力値を予め記憶されている出力基
準値となるように受光素子１９の感度抵抗を調整する。
調整が完了すると、その時の光センサ１５の出力初期値
を記憶手段３５に記憶しておく。In the above means for solving the problem, the water supplied is
The light sensor 15 enters the air duct 13 from the drainage channel 10, and the optical sensor 15 detects the light transmittance of this water through the measuring unit 16. The sensitivity resistance of the light receiving element 19 is adjusted so that the output value of the optical sensor 15 at this time becomes the output reference value stored in advance.
When the adjustment is completed, the initial output value of the optical sensor 15 at that time is stored in the storage means 35.
【００１４】次に、圧縮された空気を洗濯槽に送り込
み、洗い工程の撹拌が始められ、洗濯水の汚濁度が運転
時間の経過と共に変化する。Next, the compressed air is sent to the washing tub, the agitation in the washing step is started, and the contamination degree of the washing water changes with the lapse of operating time.
【００１５】このとき、送風路１３に洗濯水が流入する
が、送風路１３の出口に形成された突起１４により、撹
拌時に発生する泡の侵入は防止される。それでも送風路
１３に侵入した泡は、上方に移動して測定部１６の空気
溜まり１７に溜まる。その後、測定部１６における光セ
ンサ１５の出力値を読み込み、感度調整時点の光センサ
１５の出力初期値との差により洗濯水の汚濁度を判定
し、これに基づいて洗い工程を実行する。At this time, the wash water flows into the air passage 13, but the protrusions 14 formed at the outlet of the air passage 13 prevent bubbles from entering during stirring. Still, the bubbles that have entered the air passage 13 move upward and accumulate in the air reservoir 17 of the measuring unit 16. After that, the output value of the optical sensor 15 in the measuring unit 16 is read, the contamination level of the wash water is determined based on the difference from the initial output value of the optical sensor 15 at the time of sensitivity adjustment, and the washing step is executed based on this.
【００１６】[0016]
【実施例】図１は本発明の一実施例を示す光センサの回
路図、図２は洗濯機の全体構成図、図３は測定部の断面
図、図４は洗濯機の制御回路図、図５は洗い工程のフロ
ーチャートである。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a circuit diagram of an optical sensor showing an embodiment of the present invention, FIG. 2 is an overall configuration diagram of a washing machine, FIG. 3 is a sectional view of a measuring section, and FIG. 4 is a control circuit diagram of a washing machine. FIG. 5 is a flowchart of the washing process.
【００１７】本実施例の全自動洗濯機の構成を図２に基
づいて説明する。図２において、１は外箱、２は水槽、
３は洗濯兼脱水槽、４はパルセータ、５は駆動モータ、
６は給水弁、７は外箱１に内設されたエアポンプ、８は
エアパイプ、９はノズル、１０は水槽２の排水口２ａか
ら真下に配された排水路である排水管、１１は排水弁、
１２は水槽２を防振支持する防振機構である。The structure of the fully automatic washing machine of this embodiment will be described with reference to FIG. In FIG. 2, 1 is an outer box, 2 is a water tank,
3 is a washing / dehydrating tank, 4 is a pulsator, 5 is a drive motor,
6 is a water supply valve, 7 is an air pump installed in the outer box 1, 8 is an air pipe, 9 is a nozzle, 10 is a drainage pipe which is a drainage channel arranged directly below the drainage port 2a of the water tank 2, and 11 is a drainage valve. ,
Reference numeral 12 denotes a vibration isolation mechanism for supporting the water tank 2 with vibration isolation.
【００１８】エアポンプ７は、そこで圧縮した空気をエ
アパイプ８およびノズル９から構成される送風路１３を
通して水槽２に供給するもので、この空気が泡となり洗
浄力が向上する。The air pump 7 supplies the compressed air therein to the water tank 2 through the air passage 13 composed of the air pipe 8 and the nozzle 9, and this air becomes bubbles to improve the cleaning power.
【００１９】ノズル９は、排水管１０に直交するように
接続され、その連通口９ａの上下には、パルセータ４に
よる撹拌時に発生する泡がノズル９内へ侵入するを防止
する突起１４が形成されている。The nozzle 9 is connected orthogonally to the drain pipe 10, and projections 14 are formed above and below the communication port 9a for preventing bubbles generated during stirring by the pulsator 4 from entering the nozzle 9. ing.
【００２０】また、ノズル９には、ノズル９内に流入し
た洗濯水の汚濁度を検知する光センサ１５を装着するた
めの測定部１６が配されている。Further, the nozzle 9 is provided with a measuring section 16 for mounting an optical sensor 15 for detecting the contamination level of the wash water flowing into the nozzle 9.
【００２１】この測定部１６は、図３の如く、両側面が
透光性を有して平坦とされ、その上方に侵入した空気を
溜める空気溜まり１７が形成されている。As shown in FIG. 3, both sides of the measuring section 16 are transparent and flat, and an air reservoir 17 is formed above the air reservoir 17 for accumulating air.
【００２２】前記光センサ１５は、発光ダイオードであ
る発光素子１８およびホトトランジスタである受光素子
１９からなり、測定部１６の両側面の外側に光学的に対
向配置され、測定部１６を通して内部の洗濯水の光透過
度を検知する。なお、図３中、２０は遮光性樹脂からな
る外装ケースである。The optical sensor 15 is composed of a light emitting element 18 which is a light emitting diode and a light receiving element 19 which is a phototransistor. The optical sensor 15 is arranged on both sides of the measuring section 16 so as to be optically opposed to each other. Detect the light transmittance of water. In FIG. 3, reference numeral 20 denotes an outer case made of light-shielding resin.
【００２３】また、洗濯機には、洗濯工程を制御する制
御装置２２が設けられている。ここで、制御装置２２の
回路構成を図４に基づいて説明する。図４において、２
４は交流電源で、制御装置２２、進相コンデンサ２５を
備えた駆動モータ５、給水弁６、エアポンプ７および排
水弁１１に電力供給している。Further, the washing machine is provided with a control device 22 for controlling the washing process. Here, the circuit configuration of the control device 22 will be described with reference to FIG. In FIG. 4, 2
An AC power source 4 supplies electric power to the control device 22, the drive motor 5 provided with the phase advancing capacitor 25, the water supply valve 6, the air pump 7, and the drain valve 11.
【００２４】制御装置２２は、制御の中心となるマイク
ロコンピュータ２６を有し、該マイクロコンピュータ２
６の入力側には、光センサ１５と、駆動モータ５のオフ
時における進相コンデンサ２５の端子電圧の変化により
洗濯兼脱水槽３内の洗濯布量を判定する洗濯布量検知部
２７とが接続されている。The control device 22 has a microcomputer 26 which is the center of control.
An optical sensor 15 and a laundry amount detector 27 for determining the amount of laundry in the washing / dehydrating tub 3 based on a change in the terminal voltage of the phase advancing capacitor 25 when the drive motor 5 is off are provided on the input side of 6. It is connected.
【００２５】洗濯布量検知部２７は、駆動モータ５の正
反転制御時に、オフ時のコンデンサ２５の端子電圧の変
化によるパルスをカウントするもので、パルス数が少な
ければ洗濯布量が大であると判断する。The laundry amount detector 27 counts the pulses due to the change in the terminal voltage of the capacitor 25 when the drive motor 5 is in the normal / reverse control. When the number of pulses is small, the amount of laundry is large. To judge.
【００２６】またマイクロコンピュータ２６の出力側に
は、その出力信号によって駆動モータ５等の負荷を制御
するスイッチング装置２８が接続されている。A switching device 28 is connected to the output side of the microcomputer 26 to control the load of the drive motor 5 or the like according to its output signal.
【００２７】さらに、図１の如く、マイクロコンピュー
タ２６の出力端子Ｐ1，Ｐ2，Ｐ3，Ｐ4には、それぞれ抵
抗値の異なる感度調整用抵抗２９〜３２が接続されてい
る。この抵抗２９〜３２は抵抗３３と共に受光素子１９
のコレクタに接続されている。なお、抵抗３４は発光素
子１８の電流制限抵抗である。Further, as shown in FIG. 1, sensitivity adjusting resistors 29 to 32 having different resistance values are connected to the output terminals P 1 , P 2 , P 3 and P 4 of the microcomputer 26. The resistors 29 to 32 together with the resistor 33 are the light receiving element 19
Connected to the collector. The resistor 34 is a current limiting resistor of the light emitting element 18.
【００２８】この制御装置２２は、給水時に水槽２内か
らノズル９内に流入した水に対する光センサ１５の出力
値が出力基準値となるように受光素子１９の感度抵抗を
調整する出力補正手段と、感度調整後に光センサ１５の
出力初期値を記憶する記憶手段３５と、光センサ１５の
出力値と出力初期値から水の汚れを検知して洗濯条件を
決定する洗濯実行手段とを備えている。The control device 22 serves as an output correction means for adjusting the sensitivity resistance of the light receiving element 19 so that the output value of the optical sensor 15 for the water flowing into the nozzle 9 from the water tank 2 at the time of water supply becomes the output reference value. A storage unit 35 that stores the output initial value of the optical sensor 15 after the sensitivity adjustment and a washing execution unit that detects water stains from the output value and the output initial value of the optical sensor 15 and determines the washing condition are provided. .
【００２９】したがって、前記出力補正手段は、出力端
子Ｐ1，Ｐ2，Ｐ3，Ｐ4からＨｉ（ＶＤＤ）の出力を選択
して、抵抗２９〜３３の並列抵抗すなわち受光素子１９
の感度抵抗を調整して出力補正を行い、前記記憶手段３
５は、補正された出力を出力初期値として記憶する。Therefore, the output correcting means selects the output of Hi (VDD) from the output terminals P 1 , P 2 , P 3 and P 4 to connect the resistors 29 to 33 in parallel, that is, the light receiving element 19.
The output of the storage means 3 is adjusted by adjusting the sensitivity resistance of
Reference numeral 5 stores the corrected output as an output initial value.
【００３０】上記構成において、洗濯をスタートする
と、給水弁６がオンし、水槽２および洗濯兼脱水槽３に
給水される。そして、洗濯兼脱水槽３内の水位が洗濯布
量検知部２７により判定された洗濯布量に応じた水位に
達すると、給水弁６がオフする。In the above structure, when washing is started, the water supply valve 6 is turned on and water is supplied to the water tank 2 and the washing / dehydrating tank 3. Then, when the water level in the washing / dehydrating tub 3 reaches the water level according to the laundry volume determined by the laundry volume detection unit 27, the water supply valve 6 is turned off.
【００３１】給水された水は、排水管１０からノズル９
に侵入し、光センサ１５により測定部１６を通して光透
過度が検知される。このときの光センサ１５の出力値を
予め記憶されている出力基準値となるように受光素子１
９の感度抵抗を調整する。The water supplied from the drain pipe 10 to the nozzle 9
The optical sensor 15 detects the light transmittance through the measuring unit 16. The light receiving element 1 adjusts the output value of the optical sensor 15 at this time to the previously stored output reference value.
Adjust the sensitivity resistance of 9.
【００３２】この調整方法は、例えば、Ｐ1〜Ｐ4出力端
子よりＨｉ（ＶＤＤ）を出力すると、抵抗２９〜３３の
並列抵抗が光センサ１５の感度抵抗となり、感度の一番
悪い状態となる。このとき、記憶手段３５に記憶されて
いる初期状態時の出力基準値とマイクロコンピュータ２
６のＡ／Ｄ入力端子から読み込んだ光センサ１５の出力
値とを比較し、基準値と同じならば、この抵抗２９〜３
３の並列抵抗をこのとき行なう洗濯工程におけるの光セ
ンサ１５の感度抵抗とする。In this adjusting method, for example, when Hi (VDD) is output from the P 1 to P 4 output terminals, the parallel resistance of the resistances 29 to 33 becomes the sensitivity resistance of the optical sensor 15 and the sensitivity is the worst. . At this time, the output reference value in the initial state stored in the storage means 35 and the microcomputer 2
The output value of the optical sensor 15 read from the A / D input terminal of No. 6 is compared, and if it is the same as the reference value, the resistances 29 to 3
The parallel resistance of 3 is the sensitivity resistance of the optical sensor 15 in the washing process performed at this time.
【００３３】基準値と異なっていると、Ｐ1出力端子の
みオフ（ハイインピーダンス）とし、Ｐ2〜Ｐ4出力端子
よりＨｉを出力することにより感度抵抗は抵抗３０〜３
３の並列抵抗となり、抵抗２９〜３３の並列抵抗より大
きな抵抗値となって光センサ１５の感度は良くなる。こ
のときの光センサ１５の出力値と出力基準値とを比較
し、出力基準値かどうかを判定し、出力基準値でなけれ
ば出力基準値となるまで同様の動作を繰り返す。なお、
マイクロコンピュータ２６には四本の抵抗２９〜３２が
接続されているので、感度抵抗としては１６通りある。If the value differs from the reference value, only the P 1 output terminal is turned off (high impedance), and Hi is output from the P 2 to P 4 output terminals, whereby the sensitivity resistance becomes 30 to 3 resistance.
3 is a parallel resistance, which is a resistance value larger than the parallel resistance of the resistors 29 to 33, and the sensitivity of the optical sensor 15 is improved. At this time, the output value of the optical sensor 15 is compared with the output reference value to determine whether it is the output reference value. If it is not the output reference value, the same operation is repeated until the output reference value is reached. In addition,
Since four resistors 29 to 32 are connected to the microcomputer 26, there are 16 sensitivity resistors.
【００３４】調整が完了すると、その時の光センサ１５
の出力値を出力初期値として記憶手段３５に記憶してお
く。次に、駆動モータ５をオンして、パルセータ４を回
転させ、エアポンプ７をオンして、圧縮された空気を洗
濯兼脱水槽３に送り込み、洗い工程の撹拌が始められ
る。これにより洗剤が溶解し、洗濯物の汚れが溶け出
し、洗濯水の汚濁度が運転時間の経過と共に変化する。When the adjustment is completed, the optical sensor 15 at that time
The output value of 1 is stored in the storage means 35 as an output initial value. Next, the drive motor 5 is turned on, the pulsator 4 is rotated, the air pump 7 is turned on, the compressed air is sent to the washing / dehydrating tank 3, and stirring in the washing step is started. As a result, the detergent is dissolved, the stains on the laundry are dissolved, and the contamination level of the wash water changes with the lapse of operating time.
【００３５】エアポンプ７がオンしているときは、ノズ
ル９には圧送されている空気が存在し、光センサ１５に
よる洗濯水の汚濁度を正確に検出できない。ｔ1時間経
過してエアポンプ７をオフしたとき、水圧によりノズル
９およびエアパイプ８内に洗濯水が導引される。このと
き、撹拌によって発生した泡が洗濯水に含まれているこ
とも考えられるので、この影響が出ないようにエアポン
プ７をオフしてからｔ2時間経過して、洗濯水の汚濁度
の検出を行う。When the air pump 7 is turned on, the air being pumped is present in the nozzle 9, and the contamination level of the washing water by the optical sensor 15 cannot be accurately detected. When the air pump 7 is turned off after a lapse of t 1 time, washing water is drawn into the nozzle 9 and the air pipe 8 by the water pressure. At this time, it is possible that the foam generated by the agitation is contained in the wash water. Therefore, in order to prevent this effect, the air pump 7 is turned off for t 2 hours, and the contamination level of the wash water is detected. I do.
【００３６】これは、ノズル９には、泡防止用の突起１
４が形成されているが、それでも泡が侵入することがあ
り、測定部１６における洗濯水中の比重の軽い泡を自然
に高い位置へ移動させて、空気溜まり１７に溜めるため
の時間である。This is because the nozzle 9 has a protrusion 1 for preventing bubbles.
No. 4 is formed, but bubbles may still enter, and it is time for the bubbles having a low specific gravity in the wash water in the measuring unit 16 to naturally move to a higher position and be accumulated in the air reservoir 17.
【００３７】その後、測定部１６における光センサ１５
の出力値をマイクロコンピュータ２６のＡ／Ｄ端子より
読み込み、感度調整時点の光センサ１５の出力初期値と
の差より洗濯水の汚濁度を判定し、この汚濁度と洗濯布
量により、洗い時間、すすぎ時間、脱水時間を決めて以
後の動作を行なう。After that, the optical sensor 15 in the measuring section 16
Is read from the A / D terminal of the microcomputer 26, the contamination level of the washing water is judged from the difference between the initial value of the output of the optical sensor 15 at the time of sensitivity adjustment, and the washing time is determined by the contamination degree and the amount of laundry. , Rinse time and dehydration time are determined and the subsequent operations are performed.
【００３８】このように、排水管１０に直交するよう連
通するノズル９に光センサ１５を装着した測定部１６を
設け、さらに、泡侵入防止用の突起１４および空気溜ま
り１７が設けられているため、測定部１６の洗濯水にパ
ルセータ４の撹拌により発生する泡による汚濁度検知に
対する悪影響を排除でき、測定部１６での正確な汚濁度
検知が行える。As described above, since the nozzle 9 communicating so as to be orthogonal to the drain pipe 10 is provided with the measuring portion 16 equipped with the optical sensor 15, the projection 14 and the air reservoir 17 for preventing bubbles from entering are provided. Therefore, it is possible to eliminate the adverse effect of the bubbles generated by the agitation of the pulsator 4 on the washing water of the measuring unit 16 with respect to the contamination level detection, and the measuring unit 16 can accurately detect the contamination level.
【００３９】また、光センサ１５の給水時の水に対する
出力値が初期状態における出力基準値になるように受光
素子１９の感度抵抗を調整するため、光センサ１５の部
品のバラツキおよび測定部１６の経年的な汚れ等による
出力の低下を防止でき、光センサ１５の誤検知を無くし
て高精度な汚濁度検知が実現できる。しかも、発光素子
を制御して光センサの出力値を調整する場合と比べて、
部品点数が少なく安価に行える。Further, since the sensitivity resistance of the light receiving element 19 is adjusted so that the output value of the optical sensor 15 for water at the time of water supply becomes the output reference value in the initial state, the variation of the parts of the optical sensor 15 and the measuring unit 16 are adjusted. It is possible to prevent a decrease in output due to aged stains, eliminate erroneous detection of the optical sensor 15, and realize highly accurate detection of pollution degree. Moreover, compared with the case of controlling the light emitting element to adjust the output value of the optical sensor,
The number of parts is small and the cost can be reduced.
【００４０】なお、本発明は、上記実施例に限定される
ものではなく、本発明の範囲内で上記実施例に多くの修
正および変更を加え得ることは勿論である。The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.
【００４１】例えば、送風路１３を水槽２に直接接続し
てもよく、また、感度調整用抵抗２９〜３２を可変抵抗
にしてもよい。さらに、洗濯槽は、水槽２と洗濯兼脱水
槽３を含んだ概念であるが二槽式洗濯機の水槽に対して
でも適用できる。For example, the air passage 13 may be directly connected to the water tank 2, and the sensitivity adjusting resistors 29 to 32 may be variable resistors. Further, the washing tub is a concept including the water tub 2 and the washing / dehydrating tub 3, but it can also be applied to the water tub of the two-tub type washing machine.
【００４２】[0042]
【発明の効果】以上の説明から明らかな通り、本発明請
求項１によると、受光素子の感度調整用抵抗を調整し
て、光センサの給水時の水に対する出力値を出力基準値
になるように補正できるため、光センサの部品のバラツ
キおよび測定部の経年的な汚れ等による出力の低下を防
止でき、光センサの誤検知を無くした高精度な汚濁度検
知が安価に実現できる。As is apparent from the above description, according to the first aspect of the present invention, the sensitivity adjusting resistance of the light receiving element is adjusted so that the output value of the optical sensor with respect to water during water supply becomes the output reference value. Therefore, it is possible to prevent a decrease in output due to variations in parts of the optical sensor and stains on the measuring unit over time, and it is possible to inexpensively realize highly accurate pollution degree detection without erroneous detection of the optical sensor.
【００４３】請求項２によると、排水口より下側の送風
路に光センサを設けることで、測定部に洗濯中の撹拌に
よって発生する泡の侵入を防止し、泡による汚濁度検知
に対する悪影響を排除できるため、測定部での正確な汚
濁度検知が行える。According to the second aspect, by providing the optical sensor in the air passage below the drain outlet, invasion of bubbles generated by agitation during washing is prevented from being introduced into the measuring portion, and the adverse effect on the detection of the pollution degree due to the bubbles is prevented. Since it can be eliminated, it is possible to accurately detect the degree of pollution in the measurement unit.
【００４４】請求項３によると、測定部への泡の侵入を
防止し、泡による汚濁度検知に対する悪影響を排除で
き、光センサの部品のバラツキおよび測定部の経年的な
汚れ等による出力の低下を防止できる。According to the third aspect, it is possible to prevent bubbles from entering the measuring section, eliminate the adverse effect of the bubbles on the detection of the pollution degree, and reduce the output due to variations in parts of the optical sensor and stains on the measuring section over time. Can be prevented.
【００４５】請求項４によると、送風路に設けた突起に
より、測定部への洗濯中の撹拌によって発生する泡の侵
入を防止し、泡による汚濁度検知に対する悪影響を排除
できる。According to the fourth aspect, the protrusions provided in the air passage can prevent the invasion of bubbles generated by stirring during washing into the measuring section, and eliminate the adverse effect of the bubbles on the detection of the pollution degree.
【００４６】請求項５によると、測定部に設けた空気溜
まりにより、測定部における液体の泡を上方に溜めて液
体内の泡を排除し、泡による汚濁度検知に対する悪影響
を排除できる。According to the fifth aspect of the present invention, the air reservoir provided in the measurement unit can collect the bubbles of the liquid in the measurement unit upward and eliminate the bubbles in the liquid, thereby eliminating the adverse effect of the bubbles on the detection of the pollution degree.
【図１】本発明の一実施例を示す光センサの回路図FIG. 1 is a circuit diagram of an optical sensor showing an embodiment of the present invention.
【図２】洗濯機の全体構成図[Figure 2] Overall structure of the washing machine
【図３】測定部の断面図FIG. 3 is a sectional view of a measurement unit
【図４】洗濯機の制御回路図FIG. 4 is a control circuit diagram of the washing machine.
【図５】洗い工程のフローチャート[Fig. 5] Flow chart of the washing process
２ 水槽 ２ａ 排水口 ９ａ 連通口 １０ 排水路 １３ 送風路 １４ 突起 １５ 光センサ １６ 測定部 １７ 空気溜まり １８ 発光素子 １９ 受光素子 ２２ 制御装置 ２９〜３２ 感度調整用抵抗 ３５ 記憶手段 2 Water Tank 2a Drainage Port 9a Communication Port 10 Drainage Channel 13 Blower Channel 14 Protrusion 15 Optical Sensor 16 Measuring Section 17 Air Reservoir 18 Light-Emitting Element 19 Light-Receiving Element 22 Control Device 29-32 Sensitivity Adjustment Resistor 35 Storage Means
Claims (5)
光素子および受光素子からなる光センサと、該光センサ
の出力信号により洗濯工程を制御する制御装置とを備
え、受光素子に感度調整用抵抗が接続され、制御装置
に、洗濯槽内に給水される水に対する光センサの出力値
が出力基準値となるように受光素子の感度抵抗を調整す
る出力補正手段を備えたことを特徴とする洗濯機。1. A light sensor comprising a light emitting element and a light receiving element for detecting the light transmittance of a liquid in a washing tub, and a control device for controlling the washing process according to an output signal of the light sensor. An adjustment resistor is connected, and the control device is provided with output correction means for adjusting the sensitivity resistance of the light receiving element so that the output value of the optical sensor for water supplied to the washing tub becomes an output reference value. And a washing machine.
れ、排水口よりも下側の排水路に洗濯槽内の液体に空気
を供給する送風路が接続され、該送風路に洗濯槽内の液
体が流入する透光性を有した測定部が形成され、該測定
部に洗濯槽内の液体の光透過度を検知する発光素子およ
び受光素子からなる光センサが装着されたことを特徴と
する洗濯機。2. A drainage channel is connected to the drainage port at the bottom of the washing tub, and a ventilation channel for supplying air to the liquid in the washing tub is connected to the drainage channel below the drainage port, and washing is performed on the ventilation channel. A light-transmissive measuring section into which the liquid in the tub flows is formed, and an optical sensor including a light-emitting element and a light-receiving element for detecting the light transmittance of the liquid in the washing tub is attached to the measuring section. Characteristic washing machine.
サの出力信号により洗濯工程を制御する制御装置が設け
られ、前記制御装置に、受光素子の感度抵抗を調整する
請求項１記載の出力補正手段と、感度調整後に光センサ
の出力初期値を記憶する記憶手段と、光センサの出力値
と出力初期値から水の汚れを検知して洗濯条件を決定す
る洗濯実行手段とを備えたことを特徴とする洗濯機。3. The washing machine according to claim 2, further comprising a control device for controlling the washing process by an output signal of the optical sensor, wherein the control device adjusts the sensitivity resistance of the light receiving element. A correction means, a storage means for storing the initial output value of the optical sensor after the sensitivity adjustment, and a washing execution means for detecting water stains from the output value and the initial output value of the optical sensor to determine the washing condition A washing machine characterized by.
の排水路と接続する連通口の周囲に、洗濯中の撹拌によ
り発生する泡の侵入を防ぐための排水路内に突出する突
起が設けられたことを特徴とする洗濯機。4. The washing machine according to claim 2, wherein a protrusion protruding into the drainage passage is provided around a communication port connected to the drainage passage of the air blow passage to prevent intrusion of bubbles generated by stirring during washing. A washing machine characterized by being provided.
の上部に空気溜まりが設けられたことを特徴とする洗濯
機。5. The washing machine according to claim 2, wherein an air pocket is provided at an upper portion of the measuring unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4227198A JP2923396B2 (en) | 1992-08-26 | 1992-08-26 | Washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4227198A JP2923396B2 (en) | 1992-08-26 | 1992-08-26 | Washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0671084A true JPH0671084A (en) | 1994-03-15 |
| JP2923396B2 JP2923396B2 (en) | 1999-07-26 |
Family
ID=16857036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4227198A Expired - Lifetime JP2923396B2 (en) | 1992-08-26 | 1992-08-26 | Washing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2923396B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003072721A (en) * | 2001-09-05 | 2003-03-12 | Ishida Co Ltd | Article processing equipment |
| JP2011050662A (en) * | 2009-09-04 | 2011-03-17 | Panasonic Corp | Washing machine and program therefor |
| CN114396993A (en) * | 2022-01-29 | 2022-04-26 | 深圳市银舍创新科技有限公司 | A water collection detection structure and detection method for cleaning water of a cleaning device |
| CN116717818A (en) * | 2023-05-23 | 2023-09-08 | 火星人厨具股份有限公司 | Air duct cleaning control method, device and computer-readable storage medium |
-
1992
- 1992-08-26 JP JP4227198A patent/JP2923396B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003072721A (en) * | 2001-09-05 | 2003-03-12 | Ishida Co Ltd | Article processing equipment |
| JP2011050662A (en) * | 2009-09-04 | 2011-03-17 | Panasonic Corp | Washing machine and program therefor |
| CN114396993A (en) * | 2022-01-29 | 2022-04-26 | 深圳市银舍创新科技有限公司 | A water collection detection structure and detection method for cleaning water of a cleaning device |
| CN116717818A (en) * | 2023-05-23 | 2023-09-08 | 火星人厨具股份有限公司 | Air duct cleaning control method, device and computer-readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2923396B2 (en) | 1999-07-26 |
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