JPH05220291A - Turbidity detecting device for washing machine - Google Patents
Turbidity detecting device for washing machineInfo
- Publication number
- JPH05220291A JPH05220291A JP4030809A JP3080992A JPH05220291A JP H05220291 A JPH05220291 A JP H05220291A JP 4030809 A JP4030809 A JP 4030809A JP 3080992 A JP3080992 A JP 3080992A JP H05220291 A JPH05220291 A JP H05220291A
- Authority
- JP
- Japan
- Prior art keywords
- water
- turbidity
- turbidity sensor
- water tub
- tub
- 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
- 238000005406 washing Methods 0.000 title claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000001514 detection method Methods 0.000 claims description 14
- 101150114468 TUB1 gene Proteins 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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】この発明は、洗濯機の水槽内の水
の汚れを検知する洗濯機の濁度検知装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turbidity detecting device for a washing machine for detecting dirt in water in a water tank of the washing machine.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】近年、
洗濯時の水の汚れを、発光素子と受光素子を有する濁度
センサを用いて、光学的に検知することが行われてい
る。このように、光学的に検知を行う場合、検知部分で
の気泡の存在が、検知に悪影響を及ぼしていた。そこ
で、気泡除去機構を設けたり、濁度センサを気泡の発生
しない排水路に設けたりすることが行われている。2. Description of the Related Art In recent years,
BACKGROUND ART Water contamination during washing is optically detected by using a turbidity sensor having a light emitting element and a light receiving element. As described above, when optically detecting, the presence of bubbles in the detecting portion adversely affects the detection. Therefore, a bubble removing mechanism is provided, or a turbidity sensor is provided in a drainage channel in which bubbles are not generated.
【０００３】前者の場合、気泡を確実に除去することは
非常に困難であるとともに、装置が大掛かりになってい
た。また、後者の場合、排水路では気泡が発生しない代
わりに、水槽内と排水路内とでは水の交流があまりない
ので、水槽内の汚れが濁度センサまで伝わってくるまで
に時間を要し、しかも、検知の精度も悪かった。ひいて
は、汚れや汚れの変化に応じた運転制御を行う場合の妨
げとなっていた。In the former case, it is very difficult to surely remove the air bubbles, and the size of the device is large. In the latter case, air bubbles do not occur in the drainage channel, and since there is not much water exchange between the water tank and the drainage channel, it takes time for dirt in the water tank to reach the turbidity sensor. Moreover, the accuracy of detection was poor. As a result, it has been a hindrance when performing operation control according to dirt and changes in dirt.
【０００４】この発明の目的は、簡単な構造にて水槽内
の水の汚れを時間遅れなく且つ精度良く検出することが
できる洗濯機の濁度検知装置を提供することである。An object of the present invention is to provide a turbidity detection device for a washing machine which is capable of accurately detecting dirt in water in a water tub with a simple structure without time delay.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めの請求項１記載の洗濯機の濁度検知装置は、水槽内の
水を排水弁を介して排水する排水路の、上記排水弁より
も水槽側に配置された濁度センサによって、水槽内の水
の濁りを検知する洗濯機の濁度検知装置において、排水
路の、濁度センサと排水弁との間の部分を、水槽内の底
部の、回転翼の下方側部分に連通させることにより、排
水路内の水を水槽内に循環させる循環路を設けたことを
特徴とするものである。A turbidity detection device for a washing machine according to claim 1 for achieving the above object, said drain valve in a drainage channel for draining water in a water tank through a drainage valve. In the turbidity detection device of the washing machine that detects the turbidity of the water in the water tub by the turbidity sensor arranged on the water tank side, the part of the drainage channel between the turbidity sensor and the drain valve is It is characterized in that a circulation path for circulating the water in the drainage channel in the water tank is provided by communicating with the lower portion of the rotary blade of the bottom of the.
【０００６】[0006]
【作用】上記の構成によれば、洗濯時やすすぎ洗い時
に、回転翼の下方側の水は回転翼によって上方へ吸い上
げられるため、水槽内の底部には、弱い負圧となってい
る。この負圧により、循環路内の水が水槽内の底部側へ
吸い上げられ、これに伴って、水槽内の水が排水路内に
流入する。これにより、水槽内の水を排水路内に循環さ
せることができ、したがって、水槽内の汚れた水を、濁
度センサ部分にいち早く導くことができ、水槽内の汚れ
を、時間遅れなく且つ精度良く検知することができる。
しかも、これを、循環路を設けるという簡単な構造にて
実現することができる。According to the above construction, the water on the lower side of the rotary blade is sucked upward by the rotary blade during washing and rinsing, so that the bottom of the water tank has a weak negative pressure. Due to this negative pressure, the water in the circulation path is sucked up to the bottom side in the water tank, and accordingly, the water in the water tank flows into the drain path. As a result, the water in the water tank can be circulated in the drainage channel, and therefore, the dirty water in the water tank can be quickly guided to the turbidity sensor portion, and the dirt in the water tank can be accurately collected without time delay. It can be detected well.
Moreover, this can be realized with a simple structure in which a circulation path is provided.
【０００７】[0007]
【実施例】以下実施例を示す添付図面によって詳細に説
明する。図１はこの発明の一実施例の濁度検知装置が配
置された洗濯機の下部を示す概略図である。図１を参照
して、外槽としての水槽１内に、内槽としての脱水槽を
兼ねる洗濯槽２が配置されている。Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 1 is a schematic view showing a lower portion of a washing machine in which a turbidity detecting device according to an embodiment of the present invention is arranged. With reference to FIG. 1, a washing tub 2 also serving as an inner tub is disposed in a water tub 1 as an outer tub.
【０００８】洗濯槽２内の底部には、洗濯水流を起こす
ための回転翼３が配置されており、この回転翼３は、水
槽１の下方に配置されたモータ（図示せず）により回転
軸３ａを介して駆動される。洗濯槽２の底面の、回転翼
３の下方部分には、洗濯槽２内と水槽１内とを連通させ
る複数の連通孔２ａが穿設されている。水槽１の底面の
外周近傍位置には、水槽１内の水を排出するための排水
路４が連通されている。この排水路４の途中部には、排
水弁５が設けられており、この排水弁５の開閉により、
保水・排水が制御される。排水路４の、上記排水弁５よ
りも水槽１側の位置には、水の濁りを検知する濁度セン
サ７が取り付けられている。排水路４の、濁度センサ７
と排水弁５との間の部分と、水槽１内の底部の、回転翼
３の下方側部分とは、排水路４内の水を水槽１内に循環
させるための循環路８を介して連通されている。At the bottom of the washing tub 2, a rotary blade 3 for causing a washing water flow is arranged. The rotary blade 3 is rotated by a motor (not shown) arranged below the water tub 1. Driven via 3a. A plurality of communication holes 2 a for communicating the inside of the washing tub 2 and the inside of the water tub 1 are formed in the bottom portion of the rotary tub 3 on the bottom surface of the washing tub 2. A drainage channel 4 for discharging water in the water tank 1 is connected to a position near the outer periphery of the bottom surface of the water tank 1. A drain valve 5 is provided in the middle of the drain passage 4, and by opening and closing the drain valve 5,
Water retention and drainage are controlled. A turbidity sensor 7 for detecting turbidity of water is attached to the drainage passage 4 at a position closer to the water tank 1 than the drainage valve 5. Turbidity sensor 7 in drainage channel 4
The portion between the drainage valve 5 and the bottom of the water tub 1 on the lower side of the rotary blade 3 communicates with each other via a circulation passage 8 for circulating the water in the drainage passage 4 into the water tub 1. Has been done.
【０００９】図２を参照して、濁度センサ６は、排水路
４を挟んで対向配置された発光素子６ａと受光素子６ｂ
からなり、発光素子６ａから出力された光を排水路４内
の水を通して受光素子６ｂにより受光し、受光素子６ｂ
の出力に基づいて濁り度合いを検知する。これらの発光
素子６ａおよび受光素子６ｂは、樹脂やガラス等の透光
性材料からなる検知窓１１，１２を通して発光および受
光する。発光素子６ａおよび受光素子６ｂは、樹脂成形
部等からなる取付部９，１０により、検知窓１１，１２
以外の外部からの光を遮断した密閉状態で取り付けられ
ている。Referring to FIG. 2, the turbidity sensor 6 includes a light emitting element 6a and a light receiving element 6b which are arranged to face each other with the drainage channel 4 interposed therebetween.
The light output from the light emitting element 6a is received by the light receiving element 6b through the water in the drainage channel 4, and the light receiving element 6b
The degree of turbidity is detected based on the output of. The light emitting element 6a and the light receiving element 6b emit and receive light through the detection windows 11 and 12 made of a translucent material such as resin or glass. The light emitting element 6a and the light receiving element 6b are attached to the detection windows 11 and 12 by the mounting portions 9 and 10 made of a resin molding portion or the like.
Other than the above, it is installed in a sealed state that blocks light from the outside.
【００１０】この実施例によれば、洗濯時やすすぎ洗い
時に、回転翼３が回転すると、水槽１内の底部の、回転
翼３の下方側部分には、弱い負圧が発生する。この負圧
のために、排水路４の、濁度センサ６よりも下流側部分
の水が、循環路８を通して、水槽１内へ循環されると共
に、水槽１内の水が排水路４内に導入される。したがっ
て、水槽１内の汚れた水を、排水路４に配した濁度セン
サ６の位置へ素早く導いて、時間遅れなしに汚れを検知
することができる。また、水が循環されることから、排
水路４内の水の汚れを水槽１内の水の汚れに略等しくす
ることができ、精度の良い汚れ検知が行える。しかも、
この時間遅れがなくて精度の良い検知を、循環路８を設
けるという簡単な構造にて達成することができる。そし
て、ひいては、下記のように、濁度や濁度変化に応じ
て、洗濯・すすぎ洗いの方法や時間等を制御を行うこと
も可能となる。According to this embodiment, when the rotary blades 3 rotate during washing or rinsing, a weak negative pressure is generated at the bottom of the water tank 1 below the rotary blades 3. Due to this negative pressure, the water in the portion of the drainage channel 4 downstream of the turbidity sensor 6 is circulated into the water tank 1 through the circulation channel 8, and the water in the water tank 1 flows into the drainage channel 4. be introduced. Therefore, the dirty water in the water tank 1 can be quickly guided to the position of the turbidity sensor 6 arranged in the drainage channel 4, and the dirt can be detected without a time delay. Further, since the water is circulated, the dirt on the water in the drainage channel 4 can be made substantially equal to the dirt on the water in the water tank 1, and the dirt can be detected with high accuracy. Moreover,
It is possible to achieve accurate detection without the time delay with a simple structure in which the circulation path 8 is provided. Then, as described below, it is possible to control the washing and rinsing methods, the time, and the like according to the turbidity and changes in the turbidity.
【００１１】すなわち、図３は、洗濯運転を行った際
の、受光素子６ｂの出力の経時変化を示している。図中
の実線は、洗濯物なしの清水で洗濯運転を行った場合を
示し、破線は、清水で汚れた洗濯物の洗濯運転を行った
場合を示している。洗濯運転中は、破線のように、受光
素子６ｂの出力（汚れ）が、次第に低下していき、最後
には、変化しなくなる。そこで、受光素子６ｂの出力
（汚れ）の変化に応じて洗濯運転を行い、汚れ変化がな
くなった時点で、洗濯運転を終了し、次工程に移るとい
った制御を行うことができる。That is, FIG. 3 shows a change with time in the output of the light receiving element 6b during the washing operation. The solid line in the figure shows the case where the washing operation is performed with fresh water without laundry, and the broken line shows the case where the washing operation of the laundry soiled with fresh water is performed. During the washing operation, as indicated by the broken line, the output (dirt) of the light receiving element 6b gradually decreases, and finally does not change. Therefore, it is possible to perform control such that the washing operation is performed according to the change in the output (dirt) of the light receiving element 6b, and when the stain change disappears, the washing operation is ended and the process proceeds to the next step.
【００１２】また、すすぎ運転中は、図中の破線と逆の
変化をし、時間の変化とともに受光素子６ｂの出力が上
昇し、最終的に出力変化がなくなると考えられる。そこ
で、受光素子６ｂの出力（汚れ）変化がなくなった時点
ですすぎ運転を終了し、次工程に移るといった制御が可
能となる。なお、回転翼３の下方に発生する弱い水流に
よる負圧を利用して、排水路４内の水を循環させるの
で、濁度検知に悪影響を及ぼす気泡の発生を抑制するこ
とができる。Further, during the rinsing operation, it is considered that the output changes from the broken line in the figure, the output of the light receiving element 6b rises with time, and finally the output does not change. Therefore, it becomes possible to perform control such that the rinsing operation is terminated and the process moves to the next step when the output (dirt) of the light receiving element 6b is no longer changed. In addition, since the water in the drainage channel 4 is circulated by utilizing the negative pressure due to the weak water flow generated below the rotor blade 3, it is possible to suppress the generation of bubbles that adversely affect the turbidity detection.
【００１３】この発明は上記実施例に限定されるもので
はなく、この発明の要旨を変更しない範囲で種々の変更
を施すことが可能である。The present invention is not limited to the above embodiment, but various modifications can be made without departing from the spirit of the present invention.
【００１４】[0014]
【発明の効果】以上のように、この発明の洗濯機の濁度
検知装置によれば、循環路により水槽内の水を排水路内
に循環させることができるので、水槽内の汚れた水を、
濁度センサ部分にいち早く導くことができ、水槽内の汚
れを、時間遅れなく且つ精度良く検知することができ
る。しかも、これを、循環路を設けるという簡単な構造
にて実現できる。そして、ひいては、水の汚れや汚れの
変化に応じた洗濯機の運転制御を行うことも可能とな
る。As described above, according to the turbidity detection device for a washing machine of the present invention, since the water in the water tank can be circulated in the drainage path by the circulation path, the dirty water in the water tank can be removed. ,
It is possible to quickly lead to the turbidity sensor portion, and it is possible to detect dirt in the water tank with high accuracy and without time delay. Moreover, this can be realized with a simple structure in which a circulation path is provided. As a result, it is possible to control the operation of the washing machine according to the stains on the water or changes in the stains.
【図１】この発明の一実施例としての濁度検知装置を含
む洗濯機の概略図である。FIG. 1 is a schematic view of a washing machine including a turbidity detection device according to an embodiment of the present invention.
【図２】濁度検知装置の要部拡大図である。FIG. 2 is an enlarged view of a main part of a turbidity detection device.
【図３】受光素子の出力の経時変化を示す図である。FIG. 3 is a diagram showing changes over time in the output of the light receiving element.
１ 水槽 ３ 回転翼 ４ 排水路 ５ 排水弁 ６ 濁度センサ ８ 循環路 1 Water tank 3 Rotor blade 4 Drainage channel 5 Drainage valve 6 Turbidity sensor 8 Circulation channel
Claims (1)
路の、上記排水弁よりも水槽側に配置された濁度センサ
によって、水槽内の水の濁りを検知する洗濯機の濁度検
知装置において、 排水路の、濁度センサと排水弁との間の部分を、水槽内
の底部の、回転翼の下方側部分に連通させることによ
り、排水路内の水を水槽内に循環させる循環路を設けた
ことを特徴とする洗濯機の濁度検知装置。1. A turbidity of a washing machine for detecting turbidity of water in a water tub by a turbidity sensor arranged on the water tub side of the drainage channel for draining water in the water tub through a drainage valve. In the degree detection device, the part of the drainage channel between the turbidity sensor and the drainage valve is communicated with the bottom of the water tank, below the rotor blades, to circulate the water in the drainage channel into the water tank. A turbidity detection device for a washing machine, which is provided with a circulation path that allows
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4030809A JP2654300B2 (en) | 1992-02-18 | 1992-02-18 | Washing machine turbidity detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4030809A JP2654300B2 (en) | 1992-02-18 | 1992-02-18 | Washing machine turbidity detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05220291A true JPH05220291A (en) | 1993-08-31 |
| JP2654300B2 JP2654300B2 (en) | 1997-09-17 |
Family
ID=12314022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4030809A Expired - Fee Related JP2654300B2 (en) | 1992-02-18 | 1992-02-18 | Washing machine turbidity detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2654300B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100453784B1 (en) * | 1996-12-18 | 2005-04-20 | 보쉬-지멘스 하우스게레테 게엠바하 | Drum Washer with Fluid Pipe |
| EP2290148A1 (en) | 2009-08-25 | 2011-03-02 | Panasonic Corporation | Laundry machine |
| JP2011041586A (en) * | 2009-08-19 | 2011-03-03 | Panasonic Corp | Washing machine |
| JP2011045437A (en) * | 2009-08-25 | 2011-03-10 | Panasonic Corp | Washing machine |
| CN102199854A (en) * | 2010-03-26 | 2011-09-28 | 松下电器产业株式会社 | Washing machine |
| TWI415992B (en) * | 2009-08-25 | 2013-11-21 | Panasonic Corp | Washing machine (1) |
| CN103757862A (en) * | 2014-01-03 | 2014-04-30 | 南京乐金熊猫电器有限公司 | Water-saving washing machine and application method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60192792U (en) * | 1984-05-30 | 1985-12-21 | シャープ株式会社 | washing machine |
-
1992
- 1992-02-18 JP JP4030809A patent/JP2654300B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60192792U (en) * | 1984-05-30 | 1985-12-21 | シャープ株式会社 | washing machine |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100453784B1 (en) * | 1996-12-18 | 2005-04-20 | 보쉬-지멘스 하우스게레테 게엠바하 | Drum Washer with Fluid Pipe |
| JP2011041586A (en) * | 2009-08-19 | 2011-03-03 | Panasonic Corp | Washing machine |
| EP2290148A1 (en) | 2009-08-25 | 2011-03-02 | Panasonic Corporation | Laundry machine |
| JP2011045437A (en) * | 2009-08-25 | 2011-03-10 | Panasonic Corp | Washing machine |
| TWI415992B (en) * | 2009-08-25 | 2013-11-21 | Panasonic Corp | Washing machine (1) |
| TWI418681B (en) * | 2009-08-25 | 2013-12-11 | Panasonic Corp | Washing machine (5) |
| CN102199854A (en) * | 2010-03-26 | 2011-09-28 | 松下电器产业株式会社 | Washing machine |
| CN103757862A (en) * | 2014-01-03 | 2014-04-30 | 南京乐金熊猫电器有限公司 | Water-saving washing machine and application method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2654300B2 (en) | 1997-09-17 |
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