JPH0334357B2 - - Google Patents
Info
- Publication number
- JPH0334357B2 JPH0334357B2 JP60148676A JP14867685A JPH0334357B2 JP H0334357 B2 JPH0334357 B2 JP H0334357B2 JP 60148676 A JP60148676 A JP 60148676A JP 14867685 A JP14867685 A JP 14867685A JP H0334357 B2 JPH0334357 B2 JP H0334357B2
- Authority
- JP
- Japan
- Prior art keywords
- water level
- laundry
- amount
- water
- washing
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 110
- 238000005406 washing Methods 0.000 claims description 36
- 238000003756 stirring Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 15
- 238000013019 agitation Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は洗濯物量を自動的に検知する洗濯物量
検知装置に関し、例えば全自動洗濯機において洗
濯物量に応じた適切な給水量を自動設定するのに
有用である。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a laundry amount detection device that automatically detects the amount of laundry, and for example, automatically sets an appropriate water supply amount according to the amount of laundry in a fully automatic washing machine. It is useful for
「従来の技術」
従来の洗濯物量検知装置の一例では、洗濯槽へ
の給水を所定の低水位までとして洗濯用モータを
運転し、洗濯用モータの入力電流の定常値を測定
し、その大きさにより洗濯物量を判定している。"Prior Art" An example of a conventional laundry amount detection device operates a washing motor by supplying water to the washing tub to a predetermined low water level, measures the steady value of the input current of the washing motor, and calculates its magnitude. The amount of laundry is determined by
洗濯用モータの入力電流は負荷量に応じて大き
くなる特性を持つことから、入力電流が大きけれ
ば負荷量すなわち洗濯物量が多いと判定するので
ある。 Since the input current of the washing motor has a characteristic of increasing according to the amount of load, if the input current is large, it is determined that the amount of load, that is, the amount of laundry is large.
「発明の目的」
本発明は、上記従来装置と異なる観点から洗濯
物量を検知する装置を提供するもので、洗濯用モ
ータの入力電流を測定する代わりに、洗濯槽での
水位変化を測定して、それに基づいて洗濯物量を
判定する装置を提供するものである。``Object of the Invention'' The present invention provides a device that detects the amount of laundry from a different perspective than the conventional device described above.Instead of measuring the input current of the washing motor, the present invention measures changes in the water level in the washing tub. , and provides a device for determining the amount of laundry based on the amount of laundry.
「発明の構成」
本発明の洗濯物量検知装置は、洗濯機の洗濯槽
内に洗濯物を入れ且つ所定の初期水位まで給水し
た状態で撹拌を行わせる撹拌制御手段、撹拌後の
上記洗濯物への含水により低下する水位またはそ
の変化を検出する水位変化検出手段およびその水
位変化検出手段の出力値を所定の比較値と比較し
て洗濯物量を判定する判定手段を具備してなるこ
とを構成上の特徴とする。``Structure of the Invention'' The laundry amount detection device of the present invention includes an agitation control means that performs agitation while the laundry is placed in a washing tub of a washing machine and water is supplied to a predetermined initial water level; The method further comprises a water level change detection means for detecting a drop in water level due to water content or a change in the water level, and a determination means for comparing the output value of the water level change detection means with a predetermined comparison value to determine the amount of laundry. The characteristics of
「作用」
本発明の発明者らは、鋭意研究を進めた結果、
洗濯機の洗濯槽内に洗濯物を入れ、所定の低水位
まで給水し、水位を測定しつつ洗濯槽内を撹拌し
たところ、水位が最初の水位から洗濯物量に応じ
て低下することを見い出した。"Effect" As a result of intensive research, the inventors of the present invention found that
When laundry was placed in the washing machine's washing tub, water was supplied to a predetermined low water level, and the inside of the washing tub was stirred while measuring the water level, it was found that the water level decreased from the initial water level according to the amount of laundry. .
これは、単に給水した状態では洗濯物が完全に
含水しないが、これを撹拌するとほぼ完全に含水
するようになり、その結果、含水された量だけ水
位が下がるものと推定される。 This is because if the laundry is simply supplied with water, it will not be completely hydrated, but when it is stirred, it will become almost completely hydrated, and as a result, the water level will drop by the amount that is hydrated.
また、布量が多いほど撹拌により含水される量
も多くなるから、その結果、布量が多いほど水位
の低下が大きくなるものと考えられる。 In addition, the larger the amount of cloth, the more water is absorbed by stirring, and as a result, it is thought that the larger the amount of cloth, the greater the drop in the water level.
そこで本発明の発明者らは、この点に着目して
研究を進め、本発明を完成したものである。 Therefore, the inventors of the present invention focused on this point, conducted research, and completed the present invention.
すなわち、本発明では、所定水位まで給水し、
撹拌し、水位の変化を見ることで洗濯物量を検知
するのである。 That is, in the present invention, water is supplied to a predetermined water level,
The amount of laundry is detected by stirring and observing changes in the water level.
「実施例」
以下、図に示す実施例に基づいて本発明を更に
詳しく説明する。ここに第１図は本発明にかかる
洗濯物量検知装置を含む洗濯機の模式的構成説明
図、第２図は本発明の一実施例の洗濯物量検知装
置の作動の要部フローチヤート、第３図は撹拌時
間と水位の変化を示す特性図、第４図は第３図に
基づいて作成した撹拌時間と水位の極大値の変化
の特性図である。なお、図に示す実施例により本
発明が限定されるものではない。"Example" The present invention will be described in more detail below based on the example shown in the drawings. Here, FIG. 1 is a schematic structural explanatory diagram of a washing machine including a laundry amount detection device according to the present invention, FIG. The figure is a characteristic diagram showing changes in stirring time and water level, and FIG. 4 is a characteristic diagram showing changes in maximum value of stirring time and water level created based on FIG. 3. Note that the present invention is not limited to the embodiments shown in the figures.
第１図に示す洗濯機１の構成は、給水弁２、水
位センサ３、洗濯兼脱水槽４、水槽５、パルセー
タ６、駆動部７、モータ８および制御回路１０か
ら基本的になつている。 The construction of a washing machine 1 shown in FIG. 1 basically consists of a water supply valve 2, a water level sensor 3, a washing/dehydration tank 4, a water tank 5, a pulsator 6, a drive section 7, a motor 8, and a control circuit 10.
これらの各構成要素は、制御回路１０を除き、
従来公知の各構成要素と同様である。 Each of these components, except for the control circuit 10,
It is the same as each conventionally known component.
制御回路１０は、本発明の洗濯物量検知装置と
して機能をしうる点において従来公知の制御回路
とは異なるものである。もつとも、ハードウエア
的にはマイクロコンピユータを中枢とする回路で
あつて従来の構成と同様である。 The control circuit 10 differs from conventionally known control circuits in that it can function as the laundry amount detection device of the present invention. However, in terms of hardware, it is a circuit centered on a microcomputer, and is similar to the conventional configuration.
この洗濯機１の使用に際しては、洗濯物Ｑを洗
濯兼脱水槽４内に投入し、スタートスイツチ（図
示省略）を押す。 When using this washing machine 1, the laundry Q is put into the washing and dehydrating tub 4, and a start switch (not shown) is pressed.
スタートスイツチが押されると、制御回路１０
は、給水弁２を開き、水槽５内に水を貯溜する。
このとき、水位センサ３により水位を監視する。 When the start switch is pressed, the control circuit 10
opens the water supply valve 2 and stores water in the water tank 5.
At this time, the water level is monitored by the water level sensor 3.
水槽５内の水の貯溜量が所定の低水位L1にな
つたことを水位センサ３により検出すれば、給水
弁２をオフにする（S1）。 When the water level sensor 3 detects that the amount of water stored in the water tank 5 has reached a predetermined low water level L1 , the water supply valve 2 is turned off (S1).
このとき、洗濯物Ｑは水を含んでいるが、まだ
完全には含んでおらず水に浮いたような状態とな
つている。 At this time, the laundry Q contains water, but does not completely contain it yet and is in a state where it appears to be floating on water.
制御回路１０は、ここでモータ８を駆動し、パ
ルセータ６により洗濯兼脱水槽４内の水を撹拌す
る。この撹拌は、連続撹拌でもよいが、断続撹拌
（例えば0.5秒間パルセータ６を駆動し一秒間停止
することを繰り返す）としてもよく、また前記断
続撹拌で１回の断続ごとにパルセータ６の回転方
向を逆転させてもよい。ここでは前者の断続撹拌
を行うものとする。 The control circuit 10 drives the motor 8 to agitate the water in the washing and dehydrating tank 4 using the pulsator 6. This stirring may be continuous stirring, but may also be intermittent stirring (for example, repeating driving the pulsator 6 for 0.5 seconds and stopping for 1 second). It may be reversed. Here, the former type of intermittent stirring is performed.
パルセータ６が回転されると、それにより水も
回転し、遠心力によつて、洗濯兼脱水槽４内の水
は周辺部が持ち上がるようになる。このような状
態を第１図にＨで示している。 When the pulsator 6 is rotated, the water is also rotated, and the peripheral portion of the water in the washing and dehydrating tank 4 is lifted up by centrifugal force. Such a state is indicated by H in FIG.
洗濯兼脱水槽４内の水の周辺部が持ち上がる
と、いわゆるポンプ効果によつて、洗濯兼脱水槽
４と水槽５の間の水が洗濯兼脱水槽４内に引き込
まれ、第１図にｈで示すように洗濯兼脱水槽４と
水槽５の間の水面が低下する。 When the peripheral part of the water in the washing/spinner tank 4 lifts up, the water between the washing/spinners tank 4 and the water tank 5 is drawn into the washing/spinners tank 4 due to the so-called pump effect, and as shown in FIG. As shown in the figure, the water level between the washing and dewatering tank 4 and the water tank 5 decreases.
パルセータ６が停止すると、盛り上がつた水面
Ｈが元に戻るため、低下した水面ｈも元の高さに
上昇する。また、撹拌により上下に変動する。 When the pulsator 6 stops, the raised water surface H returns to its original level, so that the lowered water surface H also rises to its original height. Also, it fluctuates up and down due to stirring.
この結果、水位センサ３で検出される水位は、
パルセータ６の断続運転と共に小さな上下変動を
繰り返す。 As a result, the water level detected by the water level sensor 3 is
Along with the intermittent operation of the pulsator 6, small vertical fluctuations are repeated.
一方、撹拌される結果、始めは水に浮いたよう
になつていた洗濯物Ｑが水中に引き込まれ、ほぼ
完全に含水するようになる。そこで、平均的な水
位は、これら洗濯物Ｑに含水された分だけ元の低
水位L1より低下する。 On the other hand, as a result of the stirring, the laundry Q, which was initially floating in the water, is drawn into the water and becomes almost completely hydrated. Therefore, the average water level is lowered from the original low water level L1 by the amount of water contained in these laundry items Q.
その低下の大きさは、洗濯物Ｑに含水される量
に比例し、それはすなわち洗濯物Ｑの量に比例す
る。 The magnitude of the decrease is proportional to the amount of water contained in the laundry Q, which in turn is proportional to the amount of laundry Q.
かくして、第３図に示す如き水位の変化特性が
得られる。 In this way, water level change characteristics as shown in FIG. 3 are obtained.
ここで、Ｗは水のみの場合であり、上記ポンプ
効果によつて水位は小さく上下変動しているが、
平均的水位は所定の低水位L1のままである。 Here, W is the case of only water, and the water level fluctuates slightly up and down due to the pump effect mentioned above.
The average water level remains at the predetermined low water level L1 .
Ａは、洗濯物量が少量（例えば500ｇ）の場合
であり、ポンプ効果による小さな上下変動と共
に、含水されることによる平均水位の低下があ
る。ただし、洗濯物のためにポンプ効果は少し低
下し、上下変動の振幅βはＷに比べ小さくなつて
いる。また、洗濯物が少量のため、平均水位の低
下は小さい。 A is a case where the amount of laundry is small (for example, 500 g), and there is a small vertical fluctuation due to the pump effect and a decrease in the average water level due to water content. However, the pumping effect is slightly reduced due to the laundry, and the amplitude β of the vertical fluctuation is smaller than W. In addition, since the amount of laundry is small, the average water level decrease is small.
Ｂは洗濯物量が中量（例えば１Kg）の場合であ
る。ポンプ効果による上下の変動の振幅βはＡに
比べ小さくなり、一方、含水による平均水位の低
下αはＡより大きい。 B is a case where the amount of laundry is medium (for example, 1 kg). The amplitude β of the vertical fluctuation due to the pumping effect is smaller than A, while the decrease α in the average water level due to water content is larger than A.
Ｃは洗濯物量が多量（例えば２Kg）の場合で、
やはり同様の特性が見られる。 C is when the amount of laundry is large (for example 2 kg),
Again, similar characteristics can be seen.
上記Ａ、Ｂ、Ｃを比較すれば、ポンプ効果によ
る小さな水位の上下変動βは洗濯物量が多いほど
小さくなり、平均水位の低下αは洗濯物量が多い
ほど大きくなる。平均水位は小さな上下変動βを
均した曲線であるが、小さな上下変動の極大点を
結ぶ曲線もしくは極小点を結ぶ曲線と近似してい
るので、それらを用いても差支えない。 Comparing A, B, and C above, the small vertical fluctuation β of the water level due to the pump effect becomes smaller as the amount of laundry increases, and the decrease α in the average water level increases as the amount of laundry increases. The average water level is a curve that smoothes out the small vertical fluctuations β, but since it is approximated by a curve connecting the maximum points or a curve connecting the minimum points of the small vertical fluctuations, there is no problem in using them.
そこで極大点を結んだ曲線を第４図に示す。す
なわち、第４図において、ｗ，ａ，ｂ，ｃはそれ
ぞれＷ，Ａ，Ｂ，Ｃの極大点を結んだ曲線であ
る。 Figure 4 shows a curve connecting the maximum points. That is, in FIG. 4, w, a, b, and c are curves connecting the maximum points of W, A, B, and C, respectively.
制御回路１０は、撹拌を開始してから所定時間
（例えば５秒）後に水位センサ３の出力値を読む。 The control circuit 10 reads the output value of the water level sensor 3 after a predetermined time (for example, 5 seconds) after starting stirring.
その後、短時間（例えば0.1秒）ごとに水位セ
ンサ３の出力値を読み込み、所定個（例えば20
個）読み取れば、その内の最大値を検出値Ｊとす
る（S2）。 Thereafter, the output value of the water level sensor 3 is read every short period (for example, 0.1 seconds), and
), the maximum value among them is set as the detected value J (S2).
この値Ｊは、ポンプ効果により上下に変動する
水位の極大値となつている。 This value J is the maximum value of the water level that fluctuates up and down due to the pump effect.
次に、制御回路１０は、検出値Ｊを所定の比較
値Ｅと比較する（S3）。 Next, the control circuit 10 compares the detected value J with a predetermined comparison value E (S3).
この比較値Ｅは、第４図に示すように、洗濯物
量が少量より多く中量より少ない中間的な場合に
おける撹拌による低下後の水位値に定めてある。 As shown in FIG. 4, this comparison value E is determined to be the water level value after lowering due to stirring in an intermediate case where the amount of laundry is more than a small amount and less than a medium amount.
そこで、検出値Ｊが比較値Ｅよりも大きけれ
ば、水位低下が少ないのだから、それは洗濯物量
が少量であると判定できる。 Therefore, if the detected value J is larger than the comparison value E, the water level has decreased less, so it can be determined that the amount of laundry is small.
かかる判定をしたときは、「少量洗い」とメモ
リーに設定する（S4）。 When such a judgment is made, "small amount washing" is set in the memory (S4).
一方、検出値Ｊが比較値Ｅよりも小さければ、
次に検出値Ｊを第２の比較値Ｆと比較する
（S5）。 On the other hand, if the detected value J is smaller than the comparison value E,
Next, the detected value J is compared with the second comparison value F (S5).
この第２の比較値Ｆは、第４図に示すように、
洗濯物量が中量より多く多量より少ない中間的な
場合における撹拌による低下後の水位値に設定し
てある。 This second comparison value F is, as shown in FIG.
It is set to the water level value after lowering due to stirring in an intermediate case where the amount of laundry is more than a medium amount and less than a large amount.
そこで、検出値Ｊが第２の比較値Ｆよりも大で
あれば、洗濯物量が中量と判定できる。 Therefore, if the detected value J is larger than the second comparison value F, it can be determined that the amount of laundry is medium.
かかる判定をしたときは、「中量洗い」とメモ
リーに設定する（S6）。 When such a judgment is made, "medium weight washing" is set in the memory (S6).
しかし、検出値Ｊが第２の比較値Ｆよりも小さ
ければ、それだけ洗濯物Ｑに含水された量が多い
のであるから、洗濯物量が多量であると判定す
る。 However, if the detected value J is smaller than the second comparison value F, the amount of water contained in the laundry Q is correspondingly large, and therefore it is determined that the amount of laundry is large.
かかる判定をしたときは、「多量洗い」とメモ
リーに設定する（S7）。 When such a judgment is made, "Large amount washing" is set in the memory (S7).
制御回路１０は、上記の如くメモリーに設定し
た判定結果に基づいて、例えば全自動洗濯機の場
合には給水量の制御や洗剤供給量の制御を、手動
給水の場合にはブザーやLEDを介して給水量の
過不足の表示を、さらには、パルセータ６の回転
の制御による水流の制御、洗濯時間やすすぎ時間
の制御等を行う（S8）。 Based on the determination results set in the memory as described above, the control circuit 10 controls, for example, the amount of water supplied and the amount of detergent supplied in the case of a fully automatic washing machine, and via a buzzer or LED in the case of manual water supply. In addition, the water flow is controlled by controlling the rotation of the pulsator 6, and the washing time and rinsing time are controlled (S8).
上記説明から理解されるように、この洗濯機１
の有する洗濯物量判定装置としての機能により、
水位の変化のみに基づいて洗濯物量が検知できる
のである。 As understood from the above explanation, this washing machine 1
Due to its function as a laundry amount determination device,
The amount of laundry can be detected based solely on changes in water level.
他の実施例としては、低水位からの水位の低下
分（第３図に示すα）に着目し、これを検出値と
して比較値と比較し、洗濯物量を判定するものが
挙げられる。 Another example is to focus on the drop in water level from the low water level (α shown in FIG. 3), use this as a detected value, and compare it with a comparison value to determine the amount of laundry.
また、水位として、小さな上下変動の極小値を
とるものや、上下変動の中間値をとるもの等が挙
げられる。 In addition, the water level may take a minimum value with small vertical fluctuations, or a water level with an intermediate value of vertical fluctuations.
更に、上記実施例のように２段階の比較値を有
する代わりに、３段階以上の比較値を有するもの
が挙げられる。 Furthermore, instead of having two levels of comparison values as in the above embodiments, it may have three or more levels of comparison values.
「発明の効果」
本発明によれば、洗濯機の洗濯槽内に洗濯物を
入れ且つ所定の初期水位まで給水した状態で撹拌
を行わせる撹拌制御手段、撹拌後の上記洗濯物へ
の含水により低下する水位またはその変化を検出
する水位変化検出手段およびその水位変化検出手
段の出力値を所定の比較値と比較して洗濯物量を
判定する判定手段を具備してなることを特徴とす
る洗濯物量検知装置が提供され、これにより所定
水位まで給水し、撹拌し、その撹拌後の洗濯物へ
の含水により低下した水位によつて洗濯物量を好
適に判別できるようになる。"Effects of the Invention" According to the present invention, there is provided an agitation control means that performs agitation while the laundry is placed in the washing tub of a washing machine and water is supplied to a predetermined initial water level. A laundry amount comprising a water level change detecting means for detecting a decreasing water level or a change thereof, and a determining means for determining the amount of laundry by comparing the output value of the water level change detecting means with a predetermined comparison value. A detection device is provided, which makes it possible to supply water to a predetermined water level, agitate it, and suitably determine the amount of laundry based on the water level that has fallen due to water content in the laundry after the agitation.
第１図は本発明にかかる洗濯物量検知装置を含
む洗濯機の模式的構成説明図、第２図は本発明の
一実施例の洗濯物量検知装置の作動の要部フロー
チヤート、第３図は撹拌時間と水位の変化を示す
特性図、第４図は第３図に基づいて作成した撹拌
時と水位の極大値の変化の特性図である。
（符号の説明）、１……洗濯機、２……給水弁、
３……水位センサ、４……洗濯兼脱水槽、５……
水槽、６……パルセータ、８……モータ、１０…
…制御回路。
FIG. 1 is a schematic structural explanatory diagram of a washing machine including a laundry amount detecting device according to the present invention, FIG. 2 is a flowchart of a main part of the operation of the laundry amount detecting device according to an embodiment of the present invention, and FIG. FIG. 4 is a characteristic diagram showing changes in stirring time and water level. FIG. 4 is a characteristic diagram showing changes in maximum value of water level during stirring and created based on FIG. 3. (Explanation of symbols), 1...Washing machine, 2...Water valve,
3...Water level sensor, 4...Washing and dehydration tank, 5...
Water tank, 6... Pulsator, 8... Motor, 10...
...control circuit.
Claims (1)
初期水位まで給水した状態で撹拌を行わせる撹拌
制御手段、撹拌後の上記洗濯物への含水により低
下する水位またはその変化を検出する水位変化検
出手段およびその水位変化検出手段の出力値を所
定の比較値と比較して洗濯物量を判定する判定手
段を具備してなることを特徴とする洗濯物量検知
装置。 ２ 水位変化検出手段が、撹拌後の所定時の水位
を出力する手段である特許請求の範囲第１項記載
の洗濯物量検知装置。 ３ 水位変化検出手段が、初期水位と撹拌後の所
定時の水位の差を出力する手段である特許請求の
範囲第１項記載の洗濯物量検知装置。[Scope of Claims] 1. An agitation control means that performs agitation while the laundry is placed in the washing tub of a washing machine and water is supplied to a predetermined initial water level; a water level that decreases due to water content in the laundry after agitation; or 1. A laundry amount detection device comprising a water level change detection means for detecting the change, and a determination means for comparing the output value of the water level change detection means with a predetermined comparison value to determine the amount of laundry. 2. The laundry amount detection device according to claim 1, wherein the water level change detection means is a means for outputting the water level at a predetermined time after stirring. 3. The laundry amount detection device according to claim 1, wherein the water level change detection means is a means for outputting a difference between an initial water level and a water level at a predetermined time after stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60148676A JPS628794A (en) | 1985-07-05 | 1985-07-05 | Apparatus for detecting amount of washing article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60148676A JPS628794A (en) | 1985-07-05 | 1985-07-05 | Apparatus for detecting amount of washing article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS628794A JPS628794A (en) | 1987-01-16 |
| JPH0334357B2 true JPH0334357B2 (en) | 1991-05-22 |
Family
ID=15458119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60148676A Granted JPS628794A (en) | 1985-07-05 | 1985-07-05 | Apparatus for detecting amount of washing article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628794A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5146843A (en) * | 1984-08-31 | 1992-09-15 | Robert Fuller | Apparatus for thawing frozen food |
| US5271116A (en) * | 1989-08-30 | 1993-12-21 | Fisher & Paykel Limited | Laundry machines and/or methods of controlling the same |
| JP2892749B2 (en) * | 1990-02-28 | 1999-05-17 | 株式会社日立製作所 | Washing machine control method |
| US5768729A (en) * | 1996-12-19 | 1998-06-23 | Maytag Corporation | Adaptive fill control for an automatic washer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5799995A (en) * | 1980-12-12 | 1982-06-21 | Hitachi Ltd | Full automatic washing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105073U (en) * | 1980-12-19 | 1982-06-28 |
-
1985
- 1985-07-05 JP JP60148676A patent/JPS628794A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5799995A (en) * | 1980-12-12 | 1982-06-21 | Hitachi Ltd | Full automatic washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS628794A (en) | 1987-01-16 |
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