JPH07250989A - Dehydrating and washing machine - Google Patents
Dehydrating and washing machineInfo
- Publication number
- JPH07250989A JPH07250989A JP6042220A JP4222094A JPH07250989A JP H07250989 A JPH07250989 A JP H07250989A JP 6042220 A JP6042220 A JP 6042220A JP 4222094 A JP4222094 A JP 4222094A JP H07250989 A JPH07250989 A JP H07250989A
- Authority
- JP
- Japan
- Prior art keywords
- washing
- water
- air
- drain
- pipe
- 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
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、洗濯と脱水とを同一槽
で行なういわゆる一槽式脱水洗濯機に関し、特に洗濯兼
脱水槽における水位検知に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called single-tank dewatering washing machine in which washing and dewatering are performed in the same tank, and more particularly to water level detection in a washing and dewatering tank.
【０００２】[0002]
【従来の技術】従来の一槽式脱水洗濯機を図１０〜１２
に基づいて説明する。図１０において、１は底部中央に
パルセータ２が回転自在に内装された洗濯機兼脱水槽
（以下、内槽と称す）、３は内槽１が回転自在に内装さ
れた洗濯受槽、４は洗濯軸、５は洗濯軸４が内通された
脱水軸、６は脱水軸５と内槽１とを連結したカップリン
グ、７はカップリング６のボス部に設けられた排水孔、
８は排水孔７に対応してカップリング６の下方に配置さ
れたシール受け、９はシール受け８に固定されカップリ
ング６と円周当接するオイルシール、１０はシール受け
８と洗濯受槽３との間に設けられたシールパッキン、１
１は洗濯受槽３の底部に形成された排水口１２に接続し
た排水用継手、１３は排水用継手１１の一端側と排水ホ
ース１４との間に設けられた排水弁、１５は排水用継手
１１の他端側に立設された水位検知部である圧力センサ
１６にパイプ１７を介して接続されたエアトラップ、１
８は洗濯時およびすすぎ時に内槽１内に給水するための
給水弁、１９は減速機構、２０はクラッチ機構、２１は
パルセータ２を駆動する駆動モータである。2. Description of the Related Art A conventional single-tank dewatering washing machine is shown in FIGS.
It will be described based on. In FIG. 10, 1 is a washing machine / dewatering tub (hereinafter referred to as an inner tub) in which a pulsator 2 is rotatably installed in the center of the bottom, 3 is a washing receiving tub in which the inner tub 1 is rotatably installed, and 4 is washing A shaft 5 is a dewatering shaft through which the washing shaft 4 is inserted, 6 is a coupling connecting the dewatering shaft 5 and the inner tub 1, and 7 is a drain hole provided in a boss portion of the coupling 6.
Reference numeral 8 denotes a seal receiver arranged below the coupling 6 corresponding to the drain hole 7, 9 is an oil seal fixed to the seal receiver 8 and circumferentially abutting the coupling 6, and 10 is a seal receiver 8 and a washing tub 3. Seal packing provided between
Reference numeral 1 denotes a drainage joint connected to a drainage port 12 formed at the bottom of the washing tub 3, 13 is a drainage valve provided between one end of the drainage joint 11 and a drainage hose 14, and 15 is a drainage joint 11 An air trap connected via a pipe 17 to a pressure sensor 16 which is a water level detection unit erected on the other end side of the
Reference numeral 8 is a water supply valve for supplying water into the inner tub 1 at the time of washing and rinsing, 19 is a speed reduction mechanism, 20 is a clutch mechanism, and 21 is a drive motor for driving the pulsator 2.
【０００３】次に、上記構成の脱水洗濯機における水位
検知の動作について説明する。洗濯開始とともに、給水
弁１８が作動して内槽１内への給水が始まる。内槽１内
へ給水された水は、内槽１とパルセータ２との隙間から
カップリング６に設けられた排水孔７、シール受け８、
排水口１２、排水用継手１１を通ってエアトラップ１５
の直前から充填されていく。このときの水頭圧によって
エアトラップ１５およびパイプ１７内の空気が圧縮さ
れ、その空気圧を圧力センサ１６により検出することに
より内槽１内の水位を検知し、内槽１内の水位が設定水
位となると、給水弁１８を閉じて給水を停止する。そし
て、洗い工程が運転プログラムに従って行われ、洗い工
程終了後、すすぎ工程へ移行する準備工程としての洗剤
を含んだ洗濯液を除去するための中間脱水工程へ入るた
めに、内槽１内に溜まっている洗濯液の排水が行われ
る。Next, the operation of detecting the water level in the dehydration washing machine having the above structure will be described. With the start of washing, the water supply valve 18 operates to start water supply into the inner tub 1. The water supplied into the inner tank 1 is drained through a gap between the inner tank 1 and the pulsator 2 in the coupling 6, a seal receiver 8,
Air trap 15 through drain outlet 12 and drain joint 11
Will be filled from just before. The air in the air trap 15 and the pipe 17 is compressed by the water head pressure at this time, and the water level in the inner tub 1 is detected by detecting the air pressure by the pressure sensor 16, and the water level in the inner tub 1 becomes the set water level. Then, the water supply valve 18 is closed to stop the water supply. Then, the washing process is performed in accordance with the operation program, and after the washing process is completed, it is accumulated in the inner tub 1 in order to enter an intermediate dehydration process for removing the washing liquid containing the detergent as a preparatory process for shifting to the rinsing process. The washing liquid being discharged is drained.
【０００４】ここで、排水弁１３を開放することによ
り、洗濯液は排水口１２から排水用継手１１を経て垂直
方向から水平方向の流れに変えられる。このとき、洗濯
液はエアトラップ１５または排水弁１３のいずれかに向
かおうとするが、排水弁１３が開となっていて大気と連
通しているため、図１１，１２に示す矢印Ａのように洗
濯液は排水弁１３の方向に流れる。この洗濯液の流れに
より、エアトラップ１５への圧力状態は加圧状態から減
圧状態となり、洗濯液の排水流速が速くなればなるほど
圧力が低下する。このため、同じ水位であっても洗濯時
やすすぎ時と比べてエアトラップ１５の直前に充填され
た水の水頭圧が低下してしまい、このときのエアトラッ
プ１５およびパイプ１７における空気圧を圧力センサ１
６により検出すると、洗濯液の流れにより圧力が低下し
た分だけ実際の水位よりも低い水位を検知してしまう。
これにより、まだ内槽１内に洗濯液が残留しているにも
かかわらず排水完了とみなして、中間脱水工程に移行し
てしまうことがある。その結果、残留している洗濯液の
質量およびその粘性抵抗によりパルセータ２を駆動する
駆動モータ２１に多大な負荷がかかり、モータロック等
の異常をきたす恐れがあった。これは、すすぎ工程終了
後の排水時においても同様である。Here, by opening the drain valve 13, the washing liquid is changed from the vertical direction to the horizontal flow through the drain port 12 and the drain joint 11. At this time, the washing liquid tries to go to either the air trap 15 or the drain valve 13, but since the drain valve 13 is open and communicates with the atmosphere, as shown by an arrow A in FIGS. The washing liquid flows in the direction of the drain valve 13. Due to the flow of the washing liquid, the pressure on the air trap 15 is changed from the pressurized state to the depressurized state, and the higher the drainage flow velocity of the washing liquid, the lower the pressure. Therefore, even at the same water level, the water head pressure of the water filled immediately before the air trap 15 becomes lower than that at the time of washing and rinsing, and the air pressure in the air trap 15 and the pipe 17 at this time is detected by the pressure sensor. 1
When detected by 6, the water level lower than the actual water level is detected by the amount of the pressure drop due to the flow of the washing liquid.
As a result, even if the washing liquid still remains in the inner tub 1, it may be considered that the drainage has been completed and the intermediate dehydration step may be performed. As a result, a large load is applied to the drive motor 21 that drives the pulsator 2 due to the remaining mass of the washing liquid and its viscous resistance, which may cause an abnormality such as motor lock. This is the same when draining water after the rinsing step is completed.
【０００５】また、実公昭５３−４７８２３号公報にお
いては、パルセータの裏面に環状のリブを設け、パルセ
ータの裏面の凹凸によるポンプ作用がパルセータの下方
に設けた排水孔を介して水位検知用のエアトラップに対
して負荷になるのを極力防止しようとする脱水洗濯機が
開示されているが、エアトラップは上述と同様の位置で
排水ホースに立設されているため、洗濯液の排水時での
水位検知における問題点は解決されていない。Further, in Japanese Utility Model Publication No. 53-47823, an annular rib is provided on the back surface of the pulsator, and the pumping action due to the unevenness of the back surface of the pulsator causes an air for detecting the water level through a drain hole provided below the pulsator. A dehydration washing machine is disclosed that tries to prevent the load from being applied to the trap as much as possible.However, since the air trap is erected on the drain hose at the same position as described above, it is possible to remove it when draining the washing liquid. Problems with water level detection have not been solved.
【０００６】そこで、本出願人は、特願平３−２８９７
３６号において、上述の問題点を解決すべく脱水洗濯機
を提案している。この脱水洗濯機は、図２〜図５に示す
ように、垂直管３０と水平管３１とで形成されるＬ型の
第一排水管３２が洗濯受槽３の排水口１２に接続されて
おり、水平管３１における垂直管３０と反対側の端部に
エアトラップ３３が立設され、さらに水平管３１に直交
して第二排水管３４が接続されており、排水弁１３が第
二排水管３４に配設されている。なお、図２〜図５にお
いて、上述と同様の機能を有する部材については同符号
を付してある。Therefore, the applicant of the present invention filed Japanese Patent Application No. 3-2897.
No. 36 proposes a dehydration washing machine to solve the above-mentioned problems. As shown in FIGS. 2 to 5, in this dehydration washing machine, an L-shaped first drain pipe 32 formed by a vertical pipe 30 and a horizontal pipe 31 is connected to the drain port 12 of the laundry receiving tub 3, An air trap 33 is erected at an end of the horizontal pipe 31 opposite to the vertical pipe 30, and a second drain pipe 34 is connected orthogonally to the horizontal pipe 31, and the drain valve 13 is connected to the second drain pipe 34. It is installed in. 2 to 5, members having the same functions as those described above are designated by the same reference numerals.
【０００７】そして、給水動作は上述と同様に行われ、
洗い工程終了後やすすぎ工程終了後の排水時においては
図３〜図５に示す矢印Ｂのように洗濯液は第一排水管３
２から第二排水管３４に流れる。このとき、流れの慣性
による圧力と排水弁１３の方向の流れに引かれる圧力す
なわち動圧と静圧とが釣り合うため、排水時の洗濯液の
流れによりエアトラップ３３の直前に充填された水の水
頭圧が低下することなく、洗濯時やすすぎ時（静圧時）
と同様に圧力センサ１６による正確な水位検知を行なう
ことができる。Then, the water supply operation is performed in the same manner as described above,
At the time of draining after the washing process and after the rinsing process, the washing liquid is the first drain pipe 3 as shown by an arrow B in FIGS.
2 to the second drain pipe 34. At this time, the pressure due to the inertia of the flow and the pressure drawn by the flow in the direction of the drain valve 13, that is, the dynamic pressure and the static pressure are balanced, so that the water filled immediately before the air trap 33 is caused by the flow of the washing liquid during drainage. When washing or rinsing (static pressure) without lowering the head pressure
Similarly to, the pressure sensor 16 can accurately detect the water level.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、提案例
の脱水洗濯機では、洗濯受槽３のわずかな傾斜により、
洗い工程前やすすぎ工程前の給水時に第一排水管３２の
水平管３１に図６に示すような空気溜まり３５が発生し
てしまう。この空気溜まり３５によってエアトラップ３
３およびパイプ１７内の空気の圧縮が緩和され、内槽１
内の水位が設定水位に達してもエアトラップ３３および
パイプ１７の空気圧が所定圧力まで上昇せず、圧力セン
サ１６により所定の空気圧を検出して設定水位を検知し
たとき実際には設定水位より高い水位まで給水されてい
たり、また給水が止まらなくなるといった恐れがあっ
た。However, in the dehydration washing machine of the proposed example, due to the slight inclination of the washing tub 3,
When water is supplied before the washing process and before the rinsing process, an air pool 35 as shown in FIG. 6 is generated in the horizontal pipe 31 of the first drain pipe 32. The air trap 3 is formed by the air trap 35.
3 and the compression of the air in the pipe 17 are alleviated, and the inner tank 1
Even if the internal water level reaches the set water level, the air pressure of the air trap 33 and the pipe 17 does not rise to a predetermined pressure, and when the predetermined air pressure is detected by the pressure sensor 16 and the set water level is detected, it is actually higher than the set water level. There was a fear that water was being supplied to the water level or that water supply would not stop.
【０００９】本発明は、上記に鑑み、給水時における排
水管内の空気溜まりの発生を防止して正確な水位検知を
可能とする脱水洗濯機の提供を目的とする。In view of the above, an object of the present invention is to provide a dewatering washing machine which can prevent the accumulation of air in the drainage pipe during water supply and can accurately detect the water level.
【００１０】[0010]
【課題を解決するための手段】本発明による課題解決手
段は、図１，２の如く、洗濯受槽３に回転自在に内装さ
れた洗濯兼脱水槽１と、該洗濯兼脱水槽１の底部に回転
自在に内装されたパルセータ２と、前記洗濯受槽３の底
部に設けられ排水弁１３を有する排水流路４０と、該排
水流路４０に接続されたエアトラップ３３における空気
圧から前記洗濯兼脱水槽１の水位を検知する水位検知部
１６とを備え、給水時に前記パルセータ２を一定時間だ
け回転させる空気吸上げ手段あるいは給水時に前記排水
弁１３を一定時間だけ開放する空気排出手段が設けられ
ている。As shown in FIGS. 1 and 2, a means for solving the problems according to the present invention includes a washing / dehydrating tub 1 rotatably mounted in a washing receiving tub 3 and a bottom portion of the washing / dehydrating tub 1. From the pulsator 2 rotatably installed, the drainage channel 40 having the drainage valve 13 provided at the bottom of the laundry receiving tub 3, and the air pressure in the air trap 33 connected to the drainage channel 40, the washing / dehydrating tub 1, a water level detection unit 16 for detecting the water level, and an air suction means for rotating the pulsator 2 for a fixed time at the time of water supply or an air discharge means for opening the drain valve 13 for a fixed time at the time of water supply. .
【００１１】また、排水流路４０は、図３，４の如く、
洗濯受槽３の底部に上下方向に接続された垂直管３０お
よび該垂直管３０の下端に水平方向に接続された水平管
３１からなる第一排水管３２と、前記水平管３１に直交
して接続された第二排水管３４とを備え、エアトラップ
３３が前記水平管３１に立設され、前記第二排水管３４
が前記垂直管３０と前記エアトラップ３３との間に配設
されている。The drainage channel 40 is, as shown in FIGS.
A first drainage pipe 32 composed of a vertical pipe 30 vertically connected to the bottom of the laundry receiving tub 3 and a horizontal pipe 31 horizontally connected to the lower end of the vertical pipe 30, and a connection perpendicular to the horizontal pipe 31. The second drain pipe 34, and the air trap 33 is installed upright on the horizontal pipe 31.
Are arranged between the vertical pipe 30 and the air trap 33.
【００１２】[0012]
【作用】上記課題解決手段において、給水時には、給水
開始から所定時間が経過すると、パルセータ２を一定時
間だけ回転させ、パルセータ２の回転におけるポンプ作
用により、第一，第二排水管３２，３４内の水および空
気を吸上げる。もしくは、給水開始から所定時間が経過
すると、排水弁１３を一定時間だけ開放して、第一，第
二排水管３２，３４内の水および空気を排出する。そし
て、パルセータ２の回転が停止あるいは排水弁１３が閉
鎖したときには、給水前に第一，第二排水管３２，３４
内に存在した空気と給水された水とが確実に入れ替わ
り、第一，第二排水管３２，３４内には全て水が充填さ
れる。この充填された水の水頭圧によってエアトラップ
３３内の空気が圧縮され、その空気圧から洗濯兼脱水槽
１内の水位を検知する。In the above means for solving the problems, when water is supplied, the pulsator 2 is rotated for a certain time when a predetermined time elapses from the start of the water supply, and the pump action in the rotation of the pulsator 2 causes the inside of the first and second drain pipes 32, 34 to rotate. Absorbs water and air. Alternatively, after a lapse of a predetermined time from the start of water supply, the drain valve 13 is opened for a certain time, and the water and air in the first and second drain pipes 32 and 34 are discharged. When the rotation of the pulsator 2 is stopped or the drain valve 13 is closed, the first and second drain pipes 32, 34 are supplied before water is supplied.
The air existing therein and the supplied water are reliably exchanged, and the first and second drain pipes 32 and 34 are all filled with water. The air in the air trap 33 is compressed by the head pressure of the filled water, and the water level in the washing / dehydrating tub 1 is detected from the air pressure.
【００１３】また、排水時には、洗濯液は第一排水管３
２から第二排水管３４に流れ、流れの慣性による圧力と
排水弁１３の方向の流れに引かれる圧力すなわち動圧と
静圧とが釣り合い、エアトラップ３３への圧力に影響を
与えることなく、洗濯時やすすぎ時（静圧時）と同様に
水位検知部１６による正確な水位検知を行なうことがで
きる。When the water is drained, the washing liquid is the first drain pipe 3
2 to the second drain pipe 34, the pressure due to the inertia of the flow and the pressure drawn by the flow in the direction of the drain valve 13, that is, the dynamic pressure and the static pressure are balanced, without affecting the pressure to the air trap 33. As with washing and rinsing (at the time of static pressure), the water level detecting unit 16 can accurately detect the water level.
【００１４】[0014]
（第一実施例）本発明の第一実施例の一槽式脱水洗濯機
を図２に基づいて説明する。なお、従来と同様の機能を
有する部材については、同符号を付してある。(First Embodiment) A one-tank type dewatering washing machine according to a first embodiment of the present invention will be described with reference to FIG. The members having the same functions as those of the related art are designated by the same reference numerals.
【００１５】図２において、１は底部中央にパルセータ
２が回転自在に内装された洗濯機兼脱水槽（以下、内槽
と称す）、３は内槽１が回転自在に内装された洗濯受
槽、４は洗濯軸、５は洗濯軸４が内通された脱水軸、６
は脱水軸５と内槽１とを連結したカップリング、７はカ
ップリング６のボス部に設けられた排水孔、８は排水孔
７に対応してカップリング６の下方に配置されたシール
受け、９はシール受け８に固定されカップリング６と円
周当接するオイルシール、１０はシール受け８と洗濯受
槽３との間に設けられたシールパッキン、１８は洗濯時
およびすすぎ時に内槽１内に給水するための給水弁、１
９は減速機構、２０はクラッチ機構、４６はパルセータ
２を駆動する駆動モータである。In FIG. 2, 1 is a washing machine / dewatering tub (hereinafter referred to as an inner tub) in which a pulsator 2 is rotatably installed in the center of the bottom, and 3 is a laundry receiving tub in which the inner tub 1 is rotatably installed. 4 is a washing shaft, 5 is a dehydration shaft in which the washing shaft 4 is passed, 6
Is a coupling connecting the dewatering shaft 5 and the inner tank 1, 7 is a drain hole provided in the boss portion of the coupling 6, and 8 is a seal receiver arranged below the coupling 6 corresponding to the drain hole 7. , 9 are oil seals fixed to the seal receiver 8 and circumferentially abutting the coupling 6, 10 are seal packings provided between the seal receiver 8 and the washing tub 3, and 18 is inside the inner tub 1 at the time of washing and rinsing Water valve for water supply to 1
Reference numeral 9 is a reduction mechanism, 20 is a clutch mechanism, and 46 is a drive motor for driving the pulsator 2.
【００１６】前記洗濯受槽３の底部には、排水口１２が
形成され、この排水口１２には、排水流路４０が設けら
れている。排水流路４０は、図３〜図５の如く、洗濯受
槽３の底部に上下方向に接続された垂直管３０および垂
直管３０の下端に水平方向に接続された水平管３１から
なるＬ型の第一排水管３２と、水平管３１に直交して水
平管３１のほぼ中央に接続され排水弁１３が配設された
第二排水管３４と、第二排水管３４に排水弁１３を介し
て接続された排水ホース１４とを備えている。A drain port 12 is formed at the bottom of the laundry receiving tub 3, and a drain passage 40 is provided in the drain port 12. As shown in FIGS. 3 to 5, the drainage flow path 40 is an L-shaped pipe including a vertical pipe 30 vertically connected to the bottom of the washing tub 3 and a horizontal pipe 31 horizontally connected to a lower end of the vertical pipe 30. A first drain pipe 32, a second drain pipe 34 which is orthogonal to the horizontal pipe 31 and which is connected to approximately the center of the horizontal pipe 31 and in which a drain valve 13 is provided, and a second drain pipe 34 through the drain valve 13 And a connected drain hose 14.
【００１７】そして、水平管３１における垂直管３０と
反対側の端部には、内槽１の水位を検知するための水位
検知部である圧力センサ１６にパイプ１７を介して接続
されたエアトラップ３３が立設され、これら第一排水管
３２，第二排水管３４およびエアトラップ３３は一体成
形されている。At the end of the horizontal pipe 31 opposite to the vertical pipe 30, an air trap connected via a pipe 17 to a pressure sensor 16 which is a water level detecting unit for detecting the water level of the inner tank 1. 33 is erected, and the first drain pipe 32, the second drain pipe 34, and the air trap 33 are integrally formed.
【００１８】前記圧力センサ１６としては、圧力トラン
スミッタ等が使用されており、洗濯受槽３より上側の図
示しない操作パネル部内に配されている。前記エアトラ
ップ３３の上部には、パイプ１７を装着するための円筒
状の凸部３３ａが形成されている。A pressure transmitter or the like is used as the pressure sensor 16 and is arranged in an operation panel portion (not shown) above the laundry receiving tub 3. A cylindrical convex portion 33a for mounting the pipe 17 is formed on the upper portion of the air trap 33.
【００１９】また、脱水洗濯機には、予め設定された運
転プログラムに従って洗濯工程を実行する制御部４１が
設けられている。この制御部４１は、マイクロコンピュ
ータからなり、図７に示すように、整流回路４２および
定電圧回路４３を介して商用交流電源４４に接続され、
給水時にパルセータ２の回転によって生じるポンプ作用
により第一，第二排水管３２，３４内の空気を吸上げる
ために、給水開始からクロック回路４５により刻時され
た所定時間が経過するとパルセータ２を回転させる駆動
モータ４６を一定時間だけ作動する空気吸上げ機能を有
している。The dewatering washing machine is also provided with a control unit 41 for executing a washing process according to a preset operation program. The control unit 41 is composed of a microcomputer, and is connected to a commercial AC power supply 44 via a rectifier circuit 42 and a constant voltage circuit 43, as shown in FIG.
In order to suck up the air in the first and second drain pipes 32, 34 by the pumping action generated by the rotation of the pulsator 2 during water supply, the pulsator 2 is rotated after a predetermined time elapsed by the clock circuit 45 from the start of water supply. It has an air suction function for operating the drive motor 46 for a fixed time.
【００２０】上記構成の脱水洗濯機における水位検知の
動作について図１に基づいて説明する。洗濯開始ととも
に給水弁１８が作動して内槽１内への給水が始まる。内
槽１内へ給水された水は、内槽１とパルセータ２との隙
間からカップリング６に設けられた排水孔７、シール受
け８、排水口１２、垂直管３０から水平管３１に導か
れ、エアトラップ３３の直前から充填されていく。The operation of detecting the water level in the dehydration washing machine having the above structure will be described with reference to FIG. With the start of washing, the water supply valve 18 is activated to start water supply into the inner tub 1. The water supplied into the inner tank 1 is guided from the gap between the inner tank 1 and the pulsator 2 to the drain hole 7, the seal receiver 8, the drain port 12, the vertical pipe 30 and the horizontal pipe 31 provided in the coupling 6. , The air trap 33 is filled immediately before.
【００２１】このとき、給水前から第一，第二排水管３
２，３４内に存在していた空気が、第一，第二排水管３
２，３４内に流入してきた水と入れ替わるが、エアトラ
ップ３３と連通する水平管３１においては空気と水の入
れ替わりが生じにくいため、図６に示すような空気溜ま
り３５が発生することがある。一方、給水は継続して行
われているので、内槽１内の水位は上昇を続ける。At this time, the first drain pipe 3 and the second drain pipe 3 from before water supply.
The air existing in the insides of the second and the second drainage pipes 34 is
Water is exchanged with the water flowing into the insides of the air pipes 2, 34, but in the horizontal pipe 31 communicating with the air trap 33, exchange of air with water is unlikely to occur, so that an air pool 35 as shown in FIG. 6 may be generated. On the other hand, since the water is continuously supplied, the water level in the inner tank 1 continues to rise.
【００２２】そして、給水開始から所定時間（約２５
秒）が経過すると、パルセータ２が一定時間（約０．５
秒）回転する。なお、所定時間の約２５秒は内槽１内の
水位がパルセータ２を完全に浸す程度の水位（予めマイ
クロコンピュータ４１にメモリーされている最小設定水
位）に達するまでの時間であり、一定時間の０．５秒は
パルセータ２が１回転するのに要する時間である。この
とき、パルセータ２の裏面の羽２ａによるポンプ作用に
より、排水孔７およびシール受け８を通して第一，第二
排水管３２，３４内の水が吸上げられるとともに空気も
吸上げられる。そして、パルセータ２の回転が停止する
と、内槽１内の水がその自重により再び第一，第二排水
管３２，３４内へ戻される。これにより、第一，第二排
水管３２，３４内の空気溜まり３５が解消されて水と空
気の入れ替わりを確実に行え、第一，第二排水管３２，
３４内には全て水が充填される。Then, a predetermined time (about 25
After the lapse of seconds, the pulsator 2 will continue for a certain time (about 0.5
Second) rotate. Note that the predetermined time of about 25 seconds is a time until the water level in the inner tank 1 reaches a water level at which the pulsator 2 is completely immersed (minimum set water level stored in advance in the microcomputer 41), and is a fixed time. 0.5 second is the time required for the pulsator 2 to make one revolution. At this time, due to the pumping action of the wing 2a on the back surface of the pulsator 2, the water in the first and second drain pipes 32, 34 is sucked through the drain hole 7 and the seal receiver 8 and also the air is sucked. Then, when the rotation of the pulsator 2 is stopped, the water in the inner tank 1 is returned to the first and second drain pipes 32, 34 again by its own weight. As a result, the air pool 35 in the first and second drain pipes 32 and 34 is eliminated, and the exchange of water and air can be reliably performed.
All of the inside of 34 is filled with water.
【００２３】この充填された水の水頭圧によってエアト
ラップ３３およびパイプ１７内の空気が圧縮され、その
空気圧を圧力センサ１６により検出することにより内槽
１内の水位を検知し、内槽１内の水位が設定水位となる
と、給水弁１８を閉じて給水を停止する。そして、洗い
工程が運転プログラムに従って行われ、洗い工程終了
後、すすぎ工程へ移行するための準備工程としての洗剤
を含んだ洗濯液を除去する中間脱水工程へ入るために、
内槽１内に溜まっている洗濯液は図３〜図５に示す矢印
Ｂのように、排水口１２から第一排水管３２，第二排水
管３４，排水弁１３，排水ホース１４を経て機外に排出
される。The air in the air trap 33 and the pipe 17 is compressed by the head pressure of the filled water, and the pressure sensor 16 detects the air pressure to detect the water level in the inner tank 1 and the inner tank 1. When the water level becomes the set water level, the water supply valve 18 is closed to stop the water supply. Then, the washing process is performed according to the operation program, and after the washing process is completed, in order to enter the intermediate dehydration process for removing the washing liquid containing the detergent as the preparatory process for shifting to the rinsing process,
The washing liquid accumulated in the inner tub 1 is discharged from the drain port 12 through the first drain pipe 32, the second drain pipe 34, the drain valve 13 and the drain hose 14 as shown by an arrow B in FIGS. 3 to 5. It is discharged outside.
【００２４】このとき、上述の提案例と同様に、洗濯液
の流れの慣性による圧力と排水弁１３の方向の流れに引
かれる圧力すなわち動圧と静圧とが釣り合うため、洗濯
液の流れによってエアトラップ３３の直前に充填された
水の水頭圧に影響を与えてしまうことがなく、圧力セン
サ１５による正確な水位検知を行なうことができる。そ
して、内槽１および第一，第二排水管３２，３４内の洗
濯液が全て排出さると、圧力センサ１６は大気圧に等し
い圧力を検出し、これによりマイクロコンピュータ４１
が排水完了を判断して中間脱水工程を行い、その後すす
ぎ工程、脱水工程へと移行する。なお、すすぎ工程前の
給水時には上述と同様の給水動作が行われ、すすぎ工程
終了後の排水時には上述と同様の排水動作が行われる。At this time, as in the case of the above-mentioned proposed example, the pressure due to the inertia of the flow of the washing liquid and the pressure drawn by the flow in the direction of the drain valve 13, that is, the dynamic pressure and the static pressure are balanced, so that the flow of the washing liquid varies. The pressure sensor 15 can accurately detect the water level without affecting the head pressure of the water filled immediately before the air trap 33. When all the washing liquid in the inner tub 1 and the first and second drainage pipes 32, 34 is discharged, the pressure sensor 16 detects a pressure equal to the atmospheric pressure, whereby the microcomputer 41
Determines the completion of drainage, performs an intermediate dehydration process, and then moves to a rinsing process and a dehydration process. The water supply operation similar to the above is performed at the time of water supply before the rinsing step, and the drainage operation similar to the above is performed at the time of draining after the rinse step.
【００２５】このように、給水時には給水開始から所定
時間が経過すると、パルセータ２を一定時間だけ回転さ
せてパルセータ２のポンプ作用により第一，第二排水管
３２，３４内の水および空気を吸上げるため、第一，第
二排水管３２，３４内に空気溜まり３５が発生しても解
消することができ、正確な水位検知を行なうことができ
る。このため、設定水位以上に給水されたり、給水が止
まらないといったことを防止できる。As described above, when water is supplied for a predetermined time from the start of water supply, the pulsator 2 is rotated for a fixed time to suck the water and air in the first and second drain pipes 32, 34 by the pump action of the pulsator 2. Since it is raised, even if the air pool 35 is generated in the first and second drain pipes 32 and 34, it can be eliminated, and accurate water level detection can be performed. For this reason, it is possible to prevent water from being supplied above the set water level or from being stopped.
【００２６】また、第二排水管３４が垂直管３０とエア
トラップ３３との間に配設されており、排水時には洗濯
液の流れの慣性による圧力と排水弁１３の方向の流れに
引かれる圧力すなわち動圧と静圧とが釣り合うため、洗
濯液の流れによってエアトラップ３３の直前に充填され
た水の水頭圧に影響を与えてしまうことがなく、洗濯時
と同様に圧力センサ１６による正確な水位検知を行なう
ことができる。このため、排水完了を正確に判断でき、
脱水時に内槽１内に洗濯液が残留して駆動モータに負荷
がかかることを防止できる。A second drain pipe 34 is disposed between the vertical pipe 30 and the air trap 33, and the pressure due to the inertia of the flow of the washing liquid and the pressure drawn in the direction of the drain valve 13 at the time of draining. That is, since the dynamic pressure and the static pressure are balanced, the flow of the washing liquid does not affect the head pressure of the water filled immediately before the air trap 33, and the pressure sensor 16 can accurately measure the same as in the washing. The water level can be detected. Therefore, it is possible to accurately judge the completion of drainage,
It is possible to prevent the washing liquid from remaining in the inner tub 1 during dewatering and exerting a load on the drive motor.
【００２７】（第二実施例）第二実施例の脱水洗濯機に
おいては、図８の如く、制御部４１に、給水開始からク
ロック回路４５により刻時された所定時間が経過すると
排水弁１３を一定時間だけ開放する空気排出機能を有し
ている。(Second Embodiment) In the spin-drying washing machine of the second embodiment, as shown in FIG. 8, the control unit 41 controls the drain valve 13 to operate when a predetermined time counted by the clock circuit 45 has elapsed from the start of water supply. It has an air discharge function that opens only for a certain period of time.
【００２８】したがって、図９に示すように、給水時に
給水開始から所定時間（約２５秒）経過すると、排水弁
１３が一定時間（約５秒）だけ開放し、第一，第二排水
管３２，３４内の水や空気が排出されて内槽１内の水が
第一，第二排水管３２，３４内に流入する。なお、一定
時間の約５秒は、給水当初に第一，第二排水管３２，３
４内に存在する水や空気を全て排出するのに要する時間
である。Therefore, as shown in FIG. 9, when a predetermined time (about 25 seconds) elapses from the start of water supply at the time of water supply, the drain valve 13 is opened for a certain time (about 5 seconds), and the first and second drain pipes 32 are provided. , 34 is discharged, and the water in the inner tank 1 flows into the first and second drain pipes 32, 34. In addition, about 5 seconds of fixed time is the first and second drain pipes 32, 3 at the beginning of water supply.
This is the time required to discharge all the water and air existing in the table 4.
【００２９】そして、排水弁１３を閉鎖したときには、
水と空気の入れ替えが確実に行われて第一，第二排水管
３２，３４内には全て水が充填されている。これによ
り、給水時に第一，第二排水管３２，３４内に空気溜ま
り３５が発生しても解消することができ、正確な水位検
知を行なうことができる。なお、その他の構成および動
作は、第一実施例と同様である。When the drain valve 13 is closed,
The replacement of water and air is reliably performed, and the first and second drain pipes 32 and 34 are all filled with water. As a result, even if the air pool 35 is generated in the first and second drain pipes 32 and 34 during water supply, it can be eliminated, and accurate water level detection can be performed. The other configurations and operations are similar to those of the first embodiment.
【００３０】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。例えば、本
実施例の給水時におけるパルセータ２あるいは排水弁１
３の作動制御は、本実施例のような排水流路を有する脱
水洗濯機に適用するだけに限らず、空気溜まりが発生し
やすい排水流路を有する脱水洗濯機すべてに適用可能で
あり、空気溜まりを解消することができて効果的であ
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. For example, the pulsator 2 or the drain valve 1 at the time of water supply of this embodiment
The operation control of No. 3 is not limited to be applied to the dehydration washing machine having the drainage channel as in the present embodiment, but can be applied to all the dehydration washing machines having the drainage channel in which air is easily accumulated. It is effective because it can eliminate the accumulation.
【００３１】[0031]
【発明の効果】以上の説明から明らかな通り、本発明に
よると、給水時に、パルセータを一定時間だけ回転させ
てパルセータのポンプ作用により第一，第二排水管内の
水および空気を吸上げたり、排水弁を一定時間だけ開放
させて第一，第二排水管内の水および空気を排出するた
め、第一，第二排水管内に空気溜まりが発生しても解消
することができ、正確な水位検知を行なうことができ
る。このため、設定水位以上に給水されたり、給水が止
まらないといったことを防止できる。As is apparent from the above description, according to the present invention, when water is supplied, the pulsator is rotated for a certain period of time to suck up water and air in the first and second drain pipes by the pump action of the pulsator, Since the drain valve is opened for a certain period of time to discharge the water and air in the first and second drain pipes, it is possible to eliminate even if air pools occur in the first and second drain pipes, and to accurately detect the water level. Can be done. For this reason, it is possible to prevent water from being supplied above the set water level or from being stopped.
【００３２】また、第二排水管が垂直管とエアトラップ
との間に配設されているため、排水時には洗濯液の流れ
によってエアトラップへの圧力に影響を与えることがな
く、正確な水位検知を行なうことができる。このため、
排水完了を正確に判断でき、脱水時に洗濯兼脱水槽内に
洗濯液が残留して駆動モータに負荷がかかることを防止
できるといった優れた効果がある。Further, since the second drainage pipe is arranged between the vertical pipe and the air trap, the flow of the washing liquid does not affect the pressure on the air trap during drainage, and the water level is accurately detected. Can be done. For this reason,
There is an excellent effect that the completion of drainage can be accurately determined, and that the washing liquid can be prevented from remaining in the washing / dehydrating tub during dewatering and exerting a load on the drive motor.
【図１】本発明の第一実施例の脱水洗濯機における給水
時の動作フローチャートFIG. 1 is an operation flowchart when supplying water in a dehydration washing machine according to a first embodiment of the present invention.
【図２】脱水洗濯機の縦断面図FIG. 2 is a vertical sectional view of a dehydration washing machine.
【図３】排水流路の縦断面図[Fig. 3] Vertical sectional view of the drainage channel
【図４】排水流路の側面図[Figure 4] Side view of drainage channel
【図５】排水流路における洗濯水の排水方向を示す図FIG. 5 is a diagram showing a drainage direction of washing water in a drainage channel.
【図６】排水流路内に生じた空気溜まりを示す図FIG. 6 is a diagram showing an air pool generated in a drainage flow path.
【図７】第一実施例の脱水洗濯機における制御ブロック
図FIG. 7 is a control block diagram of the spin-drying washing machine according to the first embodiment.
【図８】第二実施例の脱水洗濯機における制御ブロック
図FIG. 8 is a control block diagram of the spin-drying washing machine according to the second embodiment.
【図９】第二実施例の脱水洗濯機における給水時の動作
フローチャートFIG. 9 is an operation flowchart when supplying water in the dehydration washing machine of the second embodiment.
【図１０】従来の脱水洗濯機の縦断面図FIG. 10 is a vertical sectional view of a conventional dehydration washing machine.
【図１１】排水流路の縦断面図FIG. 11 is a vertical sectional view of the drainage channel.
【図１２】排水流路における洗濯水の排水方向を示す図FIG. 12 is a diagram showing a drainage direction of washing water in a drainage channel.
１ 洗濯兼脱水槽 ２ パルセータ ３ 洗濯受槽 １３ 排水弁 １６ 水位検知部 ３０ 垂直管 ３１ 水平管 ３２ 第一排水管 ３３ エアトラップ ３４ 第二排水管 ４０ 排水流路 1 Washing / Dehydrating Tank 2 Pulsator 3 Laundry Tank 13 Drain Valve 16 Water Level Detector 30 Vertical Pipe 31 Horizontal Pipe 32 First Drain Pipe 33 Air Trap 34 Second Drain Pipe 40 Drain Channel
Claims (3)
脱水槽と、該洗濯兼脱水槽の底部に回転自在に内装され
たパルセータと、前記洗濯受槽の底部に設けられ排水弁
を有する排水流路と、該排水流路に接続されたエアトラ
ップにおける空気圧から前記洗濯兼脱水槽の水位を検知
する水位検知部とを備え、給水時に前記パルセータを一
定時間だけ回転させる空気吸上げ手段が設けられたこと
を特徴とする脱水洗濯機。1. A washing / dehydrating tub rotatably mounted in a washing tub, a pulsator rotatably mounted in the bottom of the washing / dehydrating tub, and a drainage valve provided at the bottom of the washing tub. A flow path and a water level detection unit for detecting the water level in the washing / dehydrating tank from the air pressure in an air trap connected to the drainage flow path, and an air suction means for rotating the pulsator for a predetermined time during water supply are provided. Dewatering washing machine characterized by being done.
に接続された垂直管および該垂直管の下端に水平方向に
接続された水平管からなる第一排水管と、前記水平管に
直交して接続された第二排水管とを備え、エアトラップ
が前記水平管に立設され、前記第二排水管が前記垂直管
と前記エアトラップとの間に配設されたことを特徴とす
る請求項１記載の脱水洗濯機。2. The drainage flow path comprises a first drainage pipe, which is a vertical pipe vertically connected to the bottom of the washing tub and a horizontal pipe horizontally connected to the lower end of the vertical pipe, and the horizontal pipe. A second drain pipe connected orthogonally to each other, an air trap is erected on the horizontal pipe, and the second drain pipe is arranged between the vertical pipe and the air trap. The dehydration washing machine according to claim 1.
脱水槽と、該洗濯兼脱水槽の底部に回転自在に内装され
たパルセータと、前記洗濯受槽の底部に設けられ排水弁
を有する排水流路と、該排水流路に接続されたエアトラ
ップにおける空気圧から前記洗濯兼脱水槽の水位を検知
する水位検知部とを備え、給水時に前記排水弁を一定時
間だけ開放する空気排出手段が設けられたことを特徴と
する脱水洗濯機。3. A washing / dehydrating tub rotatably mounted in the washing tub, a pulsator rotatably mounted on the bottom of the washing / dehydrating tub, and a drainage valve provided at the bottom of the washing tub. An air discharge means is provided that includes a flow path and a water level detection unit that detects the water level of the washing / dehydrating tank from the air pressure in an air trap connected to the drain flow path, and that opens the drain valve for a certain period of time during water supply. Dewatering washing machine characterized by being done.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6042220A JP3046487B2 (en) | 1994-03-14 | 1994-03-14 | Dehydration washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6042220A JP3046487B2 (en) | 1994-03-14 | 1994-03-14 | Dehydration washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07250989A true JPH07250989A (en) | 1995-10-03 |
| JP3046487B2 JP3046487B2 (en) | 2000-05-29 |
Family
ID=12629962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6042220A Expired - Lifetime JP3046487B2 (en) | 1994-03-14 | 1994-03-14 | Dehydration washing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3046487B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100519275B1 (en) * | 1998-05-11 | 2005-12-01 | 엘지전자 주식회사 | Drainage structure of washing machine |
| US20110146353A1 (en) * | 2009-12-17 | 2011-06-23 | Whirlpool Corporation | Washing machine with air trap |
| CN102477683A (en) * | 2010-11-20 | 2012-05-30 | 安徽聚隆机械有限公司 | Transmission case of multi-pulsator washing machine, washing machine provided with same and washing manner thereof |
| CN102560977A (en) * | 2010-12-23 | 2012-07-11 | 三星电子株式会社 | Washing machine and control method of the same |
| CN108930144A (en) * | 2017-05-23 | 2018-12-04 | 安徽聚隆传动科技股份有限公司 | A kind of water-conservation washing machine crosses water installations |
-
1994
- 1994-03-14 JP JP6042220A patent/JP3046487B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100519275B1 (en) * | 1998-05-11 | 2005-12-01 | 엘지전자 주식회사 | Drainage structure of washing machine |
| US20110146353A1 (en) * | 2009-12-17 | 2011-06-23 | Whirlpool Corporation | Washing machine with air trap |
| US8578741B2 (en) * | 2009-12-17 | 2013-11-12 | Whirlpool Corporation | Washing machine with air trap |
| CN102477683A (en) * | 2010-11-20 | 2012-05-30 | 安徽聚隆机械有限公司 | Transmission case of multi-pulsator washing machine, washing machine provided with same and washing manner thereof |
| CN102560977A (en) * | 2010-12-23 | 2012-07-11 | 三星电子株式会社 | Washing machine and control method of the same |
| CN108930144A (en) * | 2017-05-23 | 2018-12-04 | 安徽聚隆传动科技股份有限公司 | A kind of water-conservation washing machine crosses water installations |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3046487B2 (en) | 2000-05-29 |
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