JPH0684976B2 - Drainage end detection method for cleaning equipment - Google Patents
Drainage end detection method for cleaning equipmentInfo
- Publication number
- JPH0684976B2 JPH0684976B2 JP62194670A JP19467087A JPH0684976B2 JP H0684976 B2 JPH0684976 B2 JP H0684976B2 JP 62194670 A JP62194670 A JP 62194670A JP 19467087 A JP19467087 A JP 19467087A JP H0684976 B2 JPH0684976 B2 JP H0684976B2
- Authority
- JP
- Japan
- Prior art keywords
- water level
- drainage
- water
- time
- detecting means
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title claims description 19
- 238000004140 cleaning Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 79
- 238000005406 washing Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電気洗濯機や食器洗い機などの洗浄装置にお
いて排水終了を検知するために用いられる排水終了検知
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage end detection method used for detecting the end of drainage in a cleaning device such as an electric washing machine or a dishwasher.
従来の技術 近年、機器の排水終了を検知するために水位検出手段を
用いて制御することが多くなってきた。2. Description of the Related Art In recent years, water level detection means are often used to detect the end of drainage of equipment.
一般的な水位検出手段の構成を第３図および第４図によ
り説明する。第３図において、Ｐは水位に比例した圧力
であり、15はゴム等で成形された薄膜のダイヤフラム、
16はコイル、17はダイヤフラム15に固定されコイル16の
中を上下方向に移動できる磁性体、18は磁性体17の変位
を抑制するバネ、19は調整ネジ、20はダイヤフラム15の
円周部分およびコイル16,調整ネジ19を固定しておく外
枠である。また、コイル16は第４図で示される発振回路
の一部位となっている。すなわち、21はインバータ、22
は帰還抵抗、23と24はコンデンサである。The structure of a general water level detecting means will be described with reference to FIGS. 3 and 4. In FIG. 3, P is a pressure proportional to the water level, 15 is a thin film diaphragm made of rubber or the like,
Reference numeral 16 is a coil, 17 is a magnetic body fixed to the diaphragm 15 and movable in the coil 16 in the vertical direction, 18 is a spring for suppressing displacement of the magnetic body 17, 19 is an adjusting screw, 20 is a circumferential portion of the diaphragm 15, and An outer frame for fixing the coil 16 and the adjusting screw 19. The coil 16 is a part of the oscillation circuit shown in FIG. That is, 21 is an inverter, 22
Is a feedback resistor and 23 and 24 are capacitors.
上記のような構成において、ダイヤフラム15に加わる水
位に比例した圧力Ｐが変化すると、磁性体17はバネ18の
作用を受けて上下方向に変位する。このときコイル16の
中を磁性体17が変位するので、コイル16のインダクタン
スが変化する。発振回路の周波数は、コイル16のインダ
クタンスとコンデンサ23および24の容量によって決まる
ので、コイル16のインダクタンスが変化すると周波数が
変化する。そして水位と周波数の関係をグラフに表すと
第５図のようになる。In the above configuration, when the pressure P proportional to the water level applied to the diaphragm 15 changes, the magnetic body 17 is displaced in the vertical direction by the action of the spring 18. At this time, since the magnetic body 17 is displaced in the coil 16, the inductance of the coil 16 changes. Since the frequency of the oscillation circuit is determined by the inductance of the coil 16 and the capacitances of the capacitors 23 and 24, the frequency changes when the inductance of the coil 16 changes. Then, the relationship between the water level and the frequency is shown in a graph as shown in FIG.
次に、洗濯機の回路構成を第６図により説明する。すな
わち、１は水位や浄濯時間，すすぎ回数，脱水時間等を
設定するための入手手段、２は入力手段１で設定された
内容や洗濯の進行状態等を使用者に知らせるための表示
手段、３は水位検出手段、５および６は洗濯脱水モータ
13を駆動するための双方向性サイリスタ、７は給水弁12
を駆動するための双方向性サイリスタ、８は排水マグネ
ット11を駆動するための双方向性サイリスタ（排水弁駆
動手段）、９は商用電源、10は電源スイッチ、14は進相
コンデンサ、４は水位検出装置３からの信号を一定時間
毎に入力し、また双方向性サイリスタ５〜８のゲートを
制御して機器全体の制御を行う制御手段である。Next, the circuit configuration of the washing machine will be described with reference to FIG. That is, 1 is an acquisition means for setting the water level, the rinsing time, the number of rinses, the dehydration time, and the like, 2 is a display means for notifying the user of the contents set by the input means 1, the progress of washing, and the like. 3 is a water level detecting means, and 5 and 6 are washing / dewatering motors.
A bidirectional thyristor for driving 13, a water supply valve 12
, 8 is a bidirectional thyristor (drain valve driving means) for driving the drain magnet 11, 9 is a commercial power source, 10 is a power switch, 14 is a phase advancing capacitor, 4 is a water level It is a control means for inputting a signal from the detection device 3 at regular intervals and controlling the gates of the bidirectional thyristors 5 to 8 to control the entire device.
さらに洗濯機の構成を第７図により説明する。すなわ
ち、25は外枠、26は水受け槽、27は洗濯兼脱水槽であ
り、28は洗濯時に回転翼29を、脱水時に洗濯兼脱水槽27
を回転させるように洗濯兼脱水モータ13の動力を切換え
るための動力切換機構である。30は水位に対応した圧力
を発生させるための空気だまりであり、31は空気だまり
30内で発生した圧力を水位検知手段３へ伝えるためのエ
アーホース、32は排水ホースである。Further, the structure of the washing machine will be described with reference to FIG. That is, 25 is an outer frame, 26 is a water receiving tank, 27 is a washing / dehydrating tank, 28 is a rotary blade 29 at the time of washing, and 28 is a washing / dewatering tank at the time of dewatering.
Is a power switching mechanism for switching the power of the washing / dehydrating motor 13 so as to rotate. 30 is an air pool for generating pressure corresponding to the water level, 31 is an air pool
An air hose for transmitting the pressure generated in 30 to the water level detecting means 3 and a drain hose 32.
上記構成において、排水時には水位が下がるとともに水
位検出手段３の出力周波数は大きくなり、第７図中の水
受け槽26内の水位が図中の水位基準面以下になると、空
気だまり30内の圧力は大気圧と等しくなり、水位検出手
段３の出力周波数は一定となる。ゆえに排水時における
水位検出手段３の出力周波数の経時変化をグラフにする
と第８図のようになる。同図においてａは水位が０の
ときの水位検出手段３の出力周波数である。このよう
に、排水時では一定時間毎に水位検出手段３の出力周波
数を測定し、ａ以上となれば排水終了としていた。こ
れを第９図のフローチャートを用いて説明すると、ステ
ップ410で制御手段４は、双方向性サイリスタ８をONす
ることにより排水マグネット11をONする。次にステップ
411で一定時間の遅延を設け、ステップ412で水位検出手
段３の出力周波数を測定しこの値をｘとする。ステッ
プ413でｘとａを比較し、ｘ≧ａであれば水受
け槽26内の水位が水位基準面以下となったと判定してス
テップ414へいき、排水マグネット11をOFFし、ｘ＜
ａであれば水受け槽26内の水位が水位基準面以上である
と判定してステップ411へもどる制御を行なっていた。In the above configuration, when the water level decreases during drainage, the output frequency of the water level detecting means 3 increases, and when the water level in the water receiving tank 26 in FIG. 7 becomes below the water level reference plane in the figure, the pressure in the air pool 30 Becomes equal to the atmospheric pressure, and the output frequency of the water level detecting means 3 becomes constant. Therefore, when the output frequency of the water level detecting means 3 changes with time during drainage, it is as shown in FIG. In the figure, a is the output frequency of the water level detecting means 3 when the water level is zero. In this way, the output frequency of the water level detecting means 3 was measured at regular intervals during drainage, and if it was a or above, drainage was completed. This will be described with reference to the flowchart of FIG. 9. In step 410, the control means 4 turns on the drain magnet 11 by turning on the bidirectional thyristor 8. Next step
A delay of a fixed time is provided at 411, and the output frequency of the water level detecting means 3 is measured at step 412, and this value is set as x . Comparing the x and a in step 413, x ≧ a, if determined that the water level in the water tub 26 is equal to or less than the water level reference plane step 414 calm, and OFF drainage magnet 11, x <
If it is a , it is determined that the water level in the water receiving tank 26 is above the water level reference plane, and the control is returned to step 411.
発明が解決しようとする問題点 このような従来の構成では、使用される周囲温度が変化
した場合、さらに量産時においてダイヤフラム15,コイ
ル16,磁性体17,バネ18,コンデンサ23および24等の特性
がばらついた場合、水位と周波数の関係は第５図のよう
になる。同図において、ｃはばらつきの上限を表し、ａ
はばらつきの下限を表し、ｂはその中心である。ここで
水位ｈが０≦ｈ≦hhにおいてｈ＝hhのときばらつきが最
小となるのは、常温にて水位ｈ＝hhのとき周波数が
＝ｈとなるように調整ネジ19で調整するためである。
このように水位と周波数の関係がばらついた場合、周波
数がａ以上になったことを検知して排水終了とすれ
ば、ｂの特性をもつサンプルではhbだけ水が残り、また
ｃの特性をもつサンプルではhcだけ水が残り、水が残っ
たまま脱水工程に移行すると、負荷が大きく洗濯兼脱水
モータ13の起動特性が悪くなるという問題があった。Problems to be Solved by the Invention In such a conventional configuration, when the ambient temperature used is changed, the characteristics of the diaphragm 15, the coil 16, the magnetic body 17, the spring 18, the capacitors 23 and 24, and the like are further increased during mass production. When the variation occurs, the relationship between the water level and the frequency becomes as shown in FIG. In the figure, c represents the upper limit of the variation, and a
Represents the lower limit of the variation, and b is the center thereof. Here, when the water level h is 0 ≦ h ≦ h h and h = h h , the minimum variation is that the adjustment is made with the adjusting screw 19 so that the frequency becomes = h when the water level h = h h at room temperature. This is because.
When the relationship between the water level and frequency fluctuates in this way, if it is detected that the frequency has become a or higher and the drainage is terminated, only h b of water remains in the sample having the characteristic of b, and the characteristic of c is changed. There was a problem that in the sample with water, only h c of water remained, and when the dehydration process was carried out with water remaining, the load was large and the starting characteristics of the washing / dewatering motor 13 deteriorated.
そこで本発明は前記問題点に鑑み、水位検出手段の特性
がばらついた場合でも確実に排水終了を判定することが
できる洗浄装置の排水終了検知方法を提供することを目
的とする。Therefore, in view of the above problems, it is an object of the present invention to provide a drainage end detection method for a cleaning device, which can reliably determine the drainage end even when the characteristics of the water level detection means vary.
問題点を解決するための手段 この目的を達成するために本発明の洗浄装置の排水終了
検知方法は、水位検出手段よりの出力から排水駆動手段
を制御する制御手段を備え、この制御手段は、排水時に
単位時間あたりの水位変化を随時演算しその演算結果の
値が所定電気信号値以下となった時点を排水終了と判定
するものである。Means for Solving the Problems In order to achieve this object, the method for detecting the completion of drainage of the cleaning apparatus of the present invention comprises a control means for controlling the drainage drive means from the output from the water level detection means, and this control means, The water level change per unit time is calculated at any time during drainage, and when the value of the calculation result is less than or equal to a predetermined electric signal value, it is determined that the drainage has ended.
作用 上記方法によれば、水位検出手段の出力周波数の絶対値
ではなく、一定時間毎の変化を検知して排水終了と判定
するので、周囲温度の変化および量産時の水位検出手段
個体のばらつきに関係なく、排水終了と判定することが
できる。Action According to the method described above, not the absolute value of the output frequency of the water level detection means, but the change at regular time intervals is detected and it is determined that the drainage has ended, so there is a change in ambient temperature and variations in the water level detection means during mass production. It can be determined that the drainage has ended regardless of the situation.
実施例 以下本発明の一実施例について、第１図および第２図を
参照しながら説明する。Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
なお洗濯機の構成は第６図および第７図で示される通り
であり、水位検出手段３の構成および特性は第３図，第
４図および第５図で示され、これは従来例の構成と同一
である。The structure of the washing machine is as shown in FIGS. 6 and 7, and the structure and characteristics of the water level detecting means 3 are shown in FIGS. 3, 4, and 5, which are the structures of the conventional example. Is the same as
本発明の特徴は制御手段４の制御にあり、その制御フロ
ーを第１図により説明する。まずステップ400で、制御
手段４は双方向性サイリスタ８をONすることにより、排
水マグネット11をONする。次にステップ401で、水位検
出手段３の出力周波数を測定し、この値をＯとする。
そしてステップ402で７秒間の遅延を設け、ステップ403
で再度水位検出手段３の出力周波数を測定し、この値を
Ｎとする。ステップ404でＮ−ＯとＰを比較
し、Ｎ−Ｏ≦Ｐであれば水受け槽26内の水位が水
位基準面以下となったと判定して、ステップ405へいっ
て排水マグネット11をOFFし、Ｎ−Ｏ＞Ｐであれ
ば水受け槽26内の水位が水位基準面以上であると判定し
て、ステップ406へいきＮのデータをＯに入れてス
テップ402にもどる。これを第２図の特性図を用いて排
水動作を説明すると、時間tm-3からtm-2までは水位検出
手段３の出力周波数はｍ−３からｍ−２へと変化し
ているので排水途中である。同様に、tm-2からtm-1ま
で、tm-1からtmまでは周波数は変化しているので排水途
中である。時間tm-1とtmの間で水受け槽26内の水位は水
位基準面以下となりそれ以後の周波数はｍで一定とな
るので、ｍ−ｍ−１≦Ｐであれば時間tmの時点で
排水終了と判定し、ｍ−ｍ＋１＞Ｐであれば時間
tm+1の時点で排水終了と判定することになる。ここで
Ｐは理論的には０であるが、制御手段４での周波数の読
取り精度は通常0.01KHzであるので、読取り誤差やノイ
ズの影響を考慮してＰ＝0.04KHzとしている。前記
Ｐの値および第１図中のステップ402の遅延時間の値は
実験で求めた最適値であり、Ｐの値は0.03〜0.05KH
z、遅延時間は５〜10秒が適当である。The feature of the present invention lies in the control of the control means 4, and its control flow will be described with reference to FIG. First, at step 400, the control means 4 turns on the drain magnet 11 by turning on the bidirectional thyristor 8. Next, in step 401, the output frequency of the water level detection means 3 is measured, and this value is set to O.
Then, in step 402, a delay of 7 seconds is set, and in step 403
Measure the output frequency of the water level detection means 3 again with.
Let N. In step 404, N - O and P are compared, and if N - O ≤ P , it is determined that the water level in the water receiving tank 26 is below the water level reference plane, and the flow goes to step 405 to turn off the drain magnet 11. , N − O > P , it is determined that the water level in the water receiving tank 26 is higher than the water level reference plane, the process proceeds to step 406, the data of N is entered in O , and the process returns to step 402. The drainage operation will be described below with reference to the characteristic diagram of FIG. 2. The output frequency of the water level detection means 3 changes from m- 3 to m-2 from time t m-3 to t m-2 . So draining is in progress. Similarly, the frequency is changing from t m-2 to t m-1 , and from t m-1 to t m, so that the water is being drained. Since the time the water level in the water tub 26 becomes less water reference surface of the subsequent frequency between t m-1 and t m is constant in m, m - m-1 if ≦ P time t m At the time point, it is determined that drainage has ended, and if m − m + 1 > P , the time
It will be judged that the drainage is completed at the time of t m + 1 . here
Although P is theoretically 0, the frequency reading accuracy of the control means 4 is usually 0.01 KHz, so P = 0.04 KHz in consideration of the effects of reading errors and noise. The above
The value of P and the value of the delay time of step 402 in FIG. 1 are optimum values obtained by experiments, and the value of P is 0.03 to 0.05KH.
It is suitable that z and the delay time are 5 to 10 seconds.
なお本実施例では全自動洗濯機の排水時について記載し
たが、電気食器洗い機等の排水動作を伴う機器にも適用
できる。さらに、水位検出手段の変位検出部は、水位に
比例した圧力の変化をコイルのインダクタンスの変化に
変換する可変インダクタンス方式としたが、これは水位
に比例した圧力の変化をコンデンサの容積の変化に変換
する可変容量方式として、その出力信号を発振回路に接
続した水位検出手段としても同様の効果がある。In addition, in this embodiment, the drainage of the fully-automatic washing machine is described, but the invention can be applied to a device accompanied by a draining operation such as an electric dishwasher. Further, the displacement detecting section of the water level detecting means adopts the variable inductance method which converts the change in pressure proportional to the water level into the change in the inductance of the coil, which changes the change in pressure proportional to the water level into the change in the volume of the capacitor. As a variable capacitance method for conversion, the same effect can be obtained even if the output signal is connected to an oscillation circuit as water level detection means.
発明の効果 以上、実施例から明らかなように本発明は、排水時に水
位検出手段の出力の一定時間毎の変化が一定値以下とな
ったとき排水終了と判定するため、周囲の温度変化およ
び量産時に水位検出手段がばらついた場合でも脱水開始
時に水位基準面以上の水が残ることを防止でき、洗濯機
の場合は、洗濯兼脱水モータの起動特性を良好にするこ
とができる。また、食器洗い機の場合は、洗浄行程が終
了したとき及びすすぎ行程が終了した時、完全に排水が
行われるため、食器の洗浄効率が向上し、かつ、乾燥行
程において悪臭が発生することもなくなる。EFFECTS OF THE INVENTION As is apparent from the embodiments described above, the present invention determines that the drainage is completed when the change in the output of the water level detection means at a constant time during drainage is equal to or less than a certain value. Sometimes even if the water level detecting means varies, it is possible to prevent water above the water level reference surface from remaining at the start of dehydration, and in the case of a washing machine, it is possible to improve the starting characteristics of the washing / dewatering motor. In the case of a dishwasher, when the washing process and the rinsing process are completed, the water is completely drained, so that the dishwashing efficiency is improved and the odor is not generated in the drying process. .
第１図は本発明の一実施例における排水終了検知方法を
示すフローチャート、第２図は排水時における水位検出
手段の出力周波数の経時変化を示す特性図、第３図は水
位検出手段の変位検出部の断面図、第４図は水位検出手
段の発振回路の電気回路図、第５図は水位検出手段の特
性図、第６図は全自動洗濯機の回路構成図、第７図は同
断面図、第８図は従来の排水方法を説明するための水位
検出手段の出力周波数の経時変化を示す特性図、第９図
は従来の排水制御を示すフローチャートである。 ３……水位検出手段、４……制御手段、８……排水弁駆
動手段。FIG. 1 is a flow chart showing a drainage end detection method according to an embodiment of the present invention, FIG. 2 is a characteristic diagram showing changes over time in the output frequency of the water level detection means during drainage, and FIG. 3 is a displacement detection of the water level detection means. 4 is a sectional view of the water level detecting means, FIG. 4 is an electric circuit diagram of the oscillation circuit of the water level detecting means, FIG. 5 is a characteristic diagram of the water level detecting means, FIG. 6 is a circuit configuration diagram of the fully automatic washing machine, and FIG. FIG. 8 is a characteristic diagram showing the change over time in the output frequency of the water level detecting means for explaining the conventional drainage method, and FIG. 9 is a flowchart showing the conventional drainage control. 3 ... Water level detecting means, 4 ... Control means, 8 ... Drain valve driving means.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−24422（ＪＰ，Ａ) 特開 昭57−77968（ＪＰ，Ａ) 特開 昭60−82075（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-24422 (JP, A) JP-A-57-77968 (JP, A) JP-A-60-82075 (JP, A)
Claims (1)
段と、前記水受け槽内の水位を検知して電気信号に変換
する水位検出手段と、この水位検出手段よりの出力から
前記排水駆動手段を制御する制御手段とを備え、この制
御手段は、排水時に単位時間あたりの水位変化を演算し
その演算結果の値が所定基準値以下となった時点を排水
終了と判定する洗浄装置の排水終了検知方法。1. A drain valve driving means for controlling drainage in a water receiving tank, a water level detecting means for detecting a water level in the water receiving tank and converting the water level into an electric signal, and an output from the water level detecting means, And a control means for controlling the drainage driving means, the control means calculates a water level change per unit time at the time of drainage, and determines the time when the value of the calculation result is equal to or less than a predetermined reference value as the drainage completion. Drainage completion detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62194670A JPH0684976B2 (en) | 1987-08-04 | 1987-08-04 | Drainage end detection method for cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62194670A JPH0684976B2 (en) | 1987-08-04 | 1987-08-04 | Drainage end detection method for cleaning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6438661A JPS6438661A (en) | 1989-02-08 |
| JPH0684976B2 true JPH0684976B2 (en) | 1994-10-26 |
Family
ID=16328353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62194670A Expired - Lifetime JPH0684976B2 (en) | 1987-08-04 | 1987-08-04 | Drainage end detection method for cleaning equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684976B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299215A (en) * | 1996-05-14 | 1997-11-25 | Duskin Co Ltd | Light emissive mat |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5777968A (en) * | 1980-11-04 | 1982-05-15 | Victor Co Of Japan Ltd | Detecting circuit for stoppage rotation of motor |
| JPS6024422A (en) * | 1983-07-20 | 1985-02-07 | Matsushita Electric Ind Co Ltd | Bathtub with water level detection device |
| JPS6082075A (en) * | 1983-10-11 | 1985-05-10 | Hitachi Ltd | Braking device for capstan motor for recording equipment |
-
1987
- 1987-08-04 JP JP62194670A patent/JPH0684976B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299215A (en) * | 1996-05-14 | 1997-11-25 | Duskin Co Ltd | Light emissive mat |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6438661A (en) | 1989-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110173853B (en) | Water pump control method, water pump control circuit and air conditioner | |
| JP2544000B2 (en) | Washing machine | |
| CN100543220C (en) | A method for controlling the dehydration speed of a washing machine | |
| JPH0684976B2 (en) | Drainage end detection method for cleaning equipment | |
| JPH0684977B2 (en) | Drainage end detection method for cleaning equipment | |
| JP2679140B2 (en) | Equipment drainage | |
| JPH07100103B2 (en) | Equipment drainage detection method | |
| JP2511938B2 (en) | Water level converter | |
| JPH0642167B2 (en) | Water level converter | |
| KR100659636B1 (en) | Apparatus for controlling the operation of washing machine | |
| JPH074465B2 (en) | Drainage abnormality notification device for washing machines, etc. | |
| JP2586535B2 (en) | Washing machine drainage control device | |
| JP2517070B2 (en) | Electric washing machine controller | |
| JP3791128B2 (en) | Water level detector for washing machine | |
| JPH11309293A (en) | Washing machine | |
| KR0133050Y1 (en) | Apparatus for anti-noise of a washing machine | |
| JPH01180016A (en) | water level converter | |
| KR0144098B1 (en) | How to dehydrate the washing machine | |
| JP2679257B2 (en) | Washing machine | |
| JP2819792B2 (en) | Washing machine control device | |
| JPH01218494A (en) | Drum laundry dryer | |
| JP2870129B2 (en) | dishwasher | |
| KR100269393B1 (en) | Apparatus and method for sensing vibration of drum washing machine | |
| JP2861281B2 (en) | Washing machine control device | |
| JPH11128584A (en) | Dehydration combined washing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071026 Year of fee payment: 13 |