JPH04220293A - Residual volume detector for liquid tank - Google Patents
Residual volume detector for liquid tankInfo
- Publication number
- JPH04220293A JPH04220293A JP2404160A JP40416090A JPH04220293A JP H04220293 A JPH04220293 A JP H04220293A JP 2404160 A JP2404160 A JP 2404160A JP 40416090 A JP40416090 A JP 40416090A JP H04220293 A JPH04220293 A JP H04220293A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- tank
- sensor
- remaining amount
- pump
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 83
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000007423 decrease Effects 0.000 claims abstract description 12
- 206010049040 Weight fluctuation Diseases 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 abstract description 10
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、液体タンクの残量検出
装置であって、例えば洗濯機の助剤等の液体を収容する
液体タンクにおける液体の残量を検出する装置に関する
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting the remaining amount of liquid in a liquid tank, and more particularly, to an apparatus for detecting the remaining amount of liquid in a liquid tank containing liquid such as washing machine aid.
【０００２】0002
【従来の技術】従来、洗濯機に助剤等の液体タンクを併
設しているものに、該タンクの助剤等の液体残量を簡単
確実に検出するようにしたものがなかった。BACKGROUND OF THE INVENTION Conventionally, there has been no washing machine equipped with a tank for liquid such as auxiliary agent, which is designed to easily and reliably detect the remaining amount of liquid such as auxiliary agent in the tank.
【０００３】0003
【発明が解決しようとする課題】従って、液体タンクに
おける液体の有無を知ることができず、前記液体の減量
による補給を逸失したり、運転中に液体が欠乏して、洗
濯槽に供給するポンプのみが液体なしで空運転する等の
不都合な問題があった。本発明は、前記問題点に鑑みて
発明したもので、その目的は、液体タンク内の液体の残
量を簡単確実に知ることができて、液体の補給を逸失し
たり、液体を洗濯槽へ供給するポンプを、液体なしで空
運転させる等の不都合な問題を解消することのできる液
体タンクの残量検出装置を提供するものがある。[Problems to be Solved by the Invention] Therefore, it is not possible to know the presence or absence of liquid in the liquid tank, and the pump that supplies the washing tub to the washing tank may lose replenishment due to a decrease in the amount of liquid, or run out of liquid during operation. There were inconvenient problems such as the chisel running dry without liquid. The present invention was invented in view of the above-mentioned problems.The purpose of the present invention is to easily and reliably know the remaining amount of liquid in the liquid tank, and to prevent the liquid from being refilled or discharging the liquid to the washing tub. 2. Description of the Related Art There is a device for detecting the remaining amount of liquid in a liquid tank, which can solve inconvenient problems such as running a supply pump dry without liquid.
【０００４】0004
【課題を解決するための手段】本発明は、上記目的達成
のために、タンクに均衡揺動可能な支点を設け、液体の
変動でタンクの均衡が崩れたとき、前記センサが動作し
、又は、タンクと連動するアクチュエータを設け、タン
ク内の重量変動によるアクチュエータの圧力変化で前記
センサが動作することを特徴としている。この場合、タ
ンクに均衡揺動可能な支点を設け、液体の変動でタンク
の均衡が崩れたとき、前記センサが動作し、又は、タン
クと連動するアクチュエータを設け、タンク内の重量変
動によるアクチュエータの圧力変化で前記センサが動作
することを特徴のようにすることができる。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a fulcrum capable of swinging in a balanced manner in a tank, and when the balance of the tank is disrupted due to fluctuations in liquid, the sensor operates or The sensor is characterized in that an actuator is provided that interlocks with the tank, and the sensor is operated by a change in the pressure of the actuator due to a change in weight within the tank. In this case, the tank is provided with a fulcrum capable of balanced rocking, and when the balance of the tank is disrupted due to fluctuations in the liquid, the sensor is activated or an actuator is provided that interlocks with the tank. The sensor may be characterized in that it is activated by a change in pressure.
【０００５】[0005]
【作用】前記構成により、タンクに収容している液体が
、減量することに伴い重量変動するのを利用して残量検
出センサを動作させるので、前記液体の残量を正確に検
出することができるのである。又、液体の減量による重
量変動で、タンクの均衡が崩れるとき、該タンクの揺動
で残量検出センサを動作させたり、又、液体の重量をタ
ンクに連動させたアクチュエータにより圧力に変換して
残量検出センサを動作させるようにしていることで、タ
ンクに収容している液体の残量を簡単、かつ、確実に検
出することができるのである。[Operation] With the above configuration, the remaining amount detection sensor is operated by utilizing the weight fluctuation of the liquid contained in the tank as it decreases, so it is possible to accurately detect the remaining amount of the liquid. It can be done. In addition, when the balance of the tank is disrupted due to weight fluctuations due to the loss of liquid, the remaining amount detection sensor is operated by the rocking of the tank, and the weight of the liquid is converted into pressure by an actuator linked to the tank. By activating the remaining amount detection sensor, the remaining amount of liquid contained in the tank can be easily and reliably detected.
【０００６】[0006]
【実施例】本発明の液体タンクの残量検出装置を図面の
実施例に基づいて説明する。図３は、本発明を装備する
一例の洗濯機を外観的に示しており、この洗濯機の内部
に以下に説明する液体タンクの残量検出装置が設けてあ
る。即ち、図１は前記液体タンクの残量検出装置の第１
実施例で、上面に液体補給口１と、先端にフィルタ２を
備えたホース３を併設する供給口４とを設けると共に、
底面５に該底面５の一方を凹状に沈降させた液溜り６を
形成した概略箱体を呈する液体タンク７を設け、該タン
ク７に支持台８を設けて、該支持台８に前記タンク７に
液体の充填時、該タンク７が均衡揺動可能となる揺動支
点９を設けると共に、前記支持台８の前記支点９に対す
る一方の遊端１０側に、ポンプ１１を支持するポンプ台
１２を設けて、該ポンプ台１２に例えば、リミットスイ
ッチ等で構成された液体残量検出センサ１３を設けてい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus for detecting the remaining amount of liquid in a liquid tank according to the present invention will be explained based on the embodiments shown in the drawings. FIG. 3 shows an external appearance of an example of a washing machine equipped with the present invention, and a liquid tank remaining amount detection device described below is provided inside this washing machine. That is, FIG. 1 shows the first part of the liquid tank remaining amount detection device.
In the embodiment, a liquid supply port 1 and a supply port 4 having a hose 3 with a filter 2 at the tip are provided on the top surface, and
A liquid tank 7 having a generally box-like shape is provided on the bottom surface 5 and has a liquid reservoir 6 formed by sinking one side of the bottom surface 5 in a concave shape.A support 8 is provided on the tank 7. A swing fulcrum 9 is provided to allow the tank 7 to swing in a balanced manner when filling with liquid, and a pump stand 12 for supporting the pump 11 is provided on one free end 10 side of the support stand 8 with respect to the fulcrum 9. The pump stand 12 is provided with a remaining liquid amount detecting sensor 13 configured with a limit switch or the like, for example.
【０００７】一方前記支持台８における支点９を介した
他方側の遊端１０ａには、螺軸１４と、該螺軸１４と螺
合する螺孔をもち、回動操作により螺進螺退可能なウェ
イト１５とで構成された均衡調節装置１６が設けてあり
、この均衡調節装置１６の前記ウェイト１５を螺進螺退
させることで、前記タンク７の均衡状態を所定の状態に
予め初期調節するようになしている。On the other hand, the free end 10a of the support base 8 on the other side via the fulcrum 9 has a screw shaft 14 and a screw hole that screws into the screw shaft 14, and can be screwed forward and backward by a rotation operation. A balance adjustment device 16 is provided, which is configured with a weight 15, and by screwing the weight 15 of this balance adjustment device 16 forward and backward, the balance state of the tank 7 is initially adjusted to a predetermined state. That's what I do.
【０００８】又、図２に示すものは、タンク７内の液体
重量を圧力に変換してこの圧力で残量検出センサ１３ａ
を動作させるようにした第２実施例である。即ち、平坦
な底面５ａをもつ液体タンク７に、これを支持する支持
台８ａを設けて、該支持台８ａの液体が重力作用すると
きの重心位置に、ピストン１７を固定させたエアーアク
チュエータ１８を設けて、該アクチュエータ１８の圧縮
室１９を、例えば、感圧式のスイッチからなる残量検出
センサ１３ａにチューブ２０で連通させ、前記タンク７
に液体が充填時、該液体の重力作用で下降したピストン
１７により、圧縮室１９の圧力（気体）が前記チューブ
２０を通り、前記検出センサ１３ａを圧接してＯＦＦ動
作させるようになしている。Furthermore, the device shown in FIG. 2 converts the weight of the liquid in the tank 7 into pressure and uses this pressure to detect the remaining amount of the sensor 13a.
This is a second embodiment in which the system is operated. That is, a liquid tank 7 having a flat bottom surface 5a is provided with a support stand 8a to support it, and an air actuator 18 with a piston 17 fixed at the center of gravity position when the liquid on the support stand 8a acts by gravity. The compression chamber 19 of the actuator 18 is communicated with a remaining amount detection sensor 13a consisting of a pressure-sensitive switch through a tube 20, and the compression chamber 19 of the actuator 18 is
When filled with liquid, the pressure (gas) in the compression chamber 19 passes through the tube 20 due to the piston 17 descending due to the gravity of the liquid, and presses the detection sensor 13a to turn it off.
【０００９】又、前記タンク７内の液体が減量してその
重力作用が減少したとき、復元ばね２１の付勢力でピス
トン１７が上方へ持ち上げられ、圧縮室１９が減圧状態
となって、前記検出センサ１３ａがＯＮ動作するように
なされている。そして、前記第１及び第２実施例におけ
る検出センサ１３、１３ａの検出結果が、図４に示した
電気回路を介し、例えばランプ又は、ブザー等の報知装
置２２を作動するようになしている。尚、図４中２３は
、交流電源、２４、２５は各々リレー、又、２６はポン
プ１１の駆動時間を制御するタイマ装置である。Further, when the liquid in the tank 7 decreases and its gravitational action decreases, the piston 17 is lifted upward by the biasing force of the restoring spring 21, and the compression chamber 19 becomes depressurized, so that the detection The sensor 13a is turned ON. The detection results of the detection sensors 13 and 13a in the first and second embodiments are used to operate a notification device 22, such as a lamp or a buzzer, through the electric circuit shown in FIG. In FIG. 4, 23 is an AC power source, 24 and 25 are relays, and 26 is a timer device for controlling the drive time of the pump 11.
【００１０】次に以上のようになされた実施例の作用に
ついて説明する。先ず、第１実施例において、予め均衡
調節装置１６を操作してタンク７の均衡状態を調節して
おくことにより、液体タンク７に液体が充填されている
ときは、支点９を中心に支持台８の両遊端１０、１０ａ
の均衡が保たれて、該支持台８における遊端１０側裏面
が、検出センサ１３の接点から離間し、該センサ１３を
ＯＦＦ動作させているので報知装置２２は作動しない。
そして、液体がポンプ１１を介して洗濯槽（図示省略）
へ供給されることで、前記タンク７内の液体が著しく減
量したとき、該タンク７の底面５に設けた液溜り６に残
留する液体の重量で、支点９を中心にした支持台８の均
衡状態が崩れ、遊端１０側が下方へ下降することで、前
記支持台８の下面が検出センサ１３の接点に当接して、
該センサ１３がＯＮ動作して、液体残量の減少を検出し
、この検出結果に基づいて図４の電気回路を介して報知
装置２２を作動し、タンク７内に液体が欠乏しているこ
とを知らせると共に、ポンプ１１の駆動を停止させて該
ポンプ１１の空運転を防止するのである。Next, the operation of the embodiment constructed as described above will be explained. First, in the first embodiment, by operating the balance adjusting device 16 in advance to adjust the balanced state of the tank 7, when the liquid tank 7 is filled with liquid, the support base is moved around the fulcrum 9. Both free ends 10, 10a of 8
The balance is maintained, and the back surface of the support base 8 on the free end 10 side is separated from the contact point of the detection sensor 13, turning off the sensor 13, so the notification device 22 is not activated. Then, the liquid flows through the pump 11 into a washing tub (not shown).
When the liquid in the tank 7 decreases significantly by being supplied to the tank 7, the weight of the liquid remaining in the liquid reservoir 6 provided on the bottom 5 of the tank 7 balances the support base 8 around the fulcrum 9. When the condition collapses and the free end 10 side descends downward, the lower surface of the support base 8 comes into contact with the contact point of the detection sensor 13,
The sensor 13 is turned on to detect a decrease in the remaining amount of liquid, and based on this detection result, the notification device 22 is activated via the electric circuit shown in FIG. 4 to indicate that there is a lack of liquid in the tank 7. At the same time, the drive of the pump 11 is stopped to prevent the pump 11 from running idle.
【００１１】又、第２実施例では、液体タンク７に液体
が充填しているときは、この液体の重力作用でピストン
１７が復元ばね２１の付勢力に抗して下降して、圧縮室
１９内を高圧にし、この圧力で検出センサ１３ａを圧接
することで、該検出センサ１３ａがＯＦＦ動作して報知
装置２２を作動しない。又、前記タンク７内の液体が著
しく減量したとき、該液体の重力作用が減少することで
、復元ばね２１の付勢力が優勢となり、この付勢力でピ
ストン１７を上方へ移動させ、圧縮室１９内の圧力を底
圧にすることで、前記圧縮室１９と連通する検出センサ
１３ａの圧接状態が解除されて、該センサ１３ａがＯＮ
動作し、報知装置２２を作動して液体の残量減少を知ら
すと共に、ポンプ１１の駆動を停止して該ポンプ１１の
空運転を防止するのである。In the second embodiment, when the liquid tank 7 is filled with liquid, the piston 17 descends against the biasing force of the restoring spring 21 due to the gravitational action of the liquid, and the compression chamber 19 By making the pressure inside high and pressing the detection sensor 13a with this pressure, the detection sensor 13a is turned off and the notification device 22 is not activated. Further, when the liquid in the tank 7 decreases significantly, the gravitational force of the liquid decreases, and the biasing force of the restoring spring 21 becomes dominant, and this biasing force moves the piston 17 upward, causing the compression chamber 19 By setting the internal pressure to the bottom pressure, the pressure contact state of the detection sensor 13a communicating with the compression chamber 19 is released, and the sensor 13a is turned on.
It activates the notification device 22 to notify the user of a decrease in the remaining amount of liquid, and also stops the drive of the pump 11 to prevent the pump 11 from running idle.
【００１２】0012
【発明の効果】以上説明したように本発明では、液体タ
ンクに収容している液体の減量による重量変動を利用し
て残量を検出するようにしているので、前記液体の残量
を簡単、確実に、しかも、正確に知ることができて、液
体の補給を逸失することがなく、従って、この液体を供
給するポンプを空運転させるようなことを解消できる作
用効果を有するものである。As explained above, in the present invention, the remaining amount of the liquid is detected by using the weight fluctuation due to the reduction in the amount of liquid contained in the liquid tank. This has the effect of being able to reliably and accurately know the supply of liquid, preventing the supply of liquid from being lost, and thus eliminating the problem of dry running of the pump that supplies this liquid.
【図１】本発明を装備する第１実施例の側面方向断面図
である。1 is a side sectional view of a first embodiment equipped with the invention; FIG.
【図２】同第２実施例の側面方向断面図である。FIG. 2 is a side cross-sectional view of the second embodiment.
【図３】本発明を装備する一例とした洗濯機の外観斜視
図である。FIG. 3 is an external perspective view of a washing machine as an example equipped with the present invention.
【図４】電気回路図である。FIG. 4 is an electrical circuit diagram.
７ タンク ９ 支点 １３ 検出センサ １８ アクチュエータ 7 Tank 9 Fulcrum 13 Detection sensor 18 Actuator
Claims (2)
残量を検出する残量検出センサを設けると共に、該セン
サを前記液体の重量変動を利用して動作させ、前記液体
が減量したとき、前記検出センサが動作するようにした
ことを特徴とする液体タンクの残量検出装置。1. A tank containing a liquid is provided with a remaining amount detection sensor for detecting the remaining amount of the liquid, and the sensor is operated using changes in the weight of the liquid, so that when the amount of the liquid decreases, A remaining amount detection device for a liquid tank, characterized in that the detection sensor is activated.
液体の変動でタンクの均衡が崩れたとき、前記センサが
動作し、又は、タンクと連動するアクチュエータを設け
、タンク内の重量変動によるアクチュエータの圧力変化
で前記センサが動作することを特徴とする１項記載の液
体タンクの残量検出装置。[Claim 2] A fulcrum capable of balanced swing is provided in the tank,
The sensor operates when the balance of the tank collapses due to fluctuations in the liquid, or an actuator is provided that works in conjunction with the tank, and the sensor operates due to pressure changes in the actuator due to weight fluctuations in the tank. A device for detecting the remaining amount of liquid in a liquid tank as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2404160A JPH04220293A (en) | 1990-12-20 | 1990-12-20 | Residual volume detector for liquid tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2404160A JPH04220293A (en) | 1990-12-20 | 1990-12-20 | Residual volume detector for liquid tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04220293A true JPH04220293A (en) | 1992-08-11 |
Family
ID=18513856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2404160A Pending JPH04220293A (en) | 1990-12-20 | 1990-12-20 | Residual volume detector for liquid tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04220293A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000045026A (en) * | 1998-12-30 | 2000-07-15 | 전주범 | Draining method for a drum type washing machine |
| JP2004166940A (en) * | 2002-11-19 | 2004-06-17 | Sharp Corp | Washing machine |
| KR100461870B1 (en) * | 2002-07-19 | 2004-12-17 | 삼성전자주식회사 | Detergent throwing device of washing machine |
| WO2008105635A1 (en) * | 2007-02-27 | 2008-09-04 | Lg Electronics Inc. | Washing machine |
| WO2008120929A3 (en) * | 2007-03-31 | 2009-01-22 | Lg Electronics Inc | Washing machine and method of controlling the washing machine |
| JP2019500173A (en) * | 2016-01-05 | 2019-01-10 | エルジー エレクトロニクス インコーポレイティド | Laundry processing apparatus and method for supplying laundry |
| JP2021029847A (en) * | 2019-08-28 | 2021-03-01 | 東芝ライフスタイル株式会社 | Clothing treatment device |
-
1990
- 1990-12-20 JP JP2404160A patent/JPH04220293A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000045026A (en) * | 1998-12-30 | 2000-07-15 | 전주범 | Draining method for a drum type washing machine |
| KR100461870B1 (en) * | 2002-07-19 | 2004-12-17 | 삼성전자주식회사 | Detergent throwing device of washing machine |
| JP2004166940A (en) * | 2002-11-19 | 2004-06-17 | Sharp Corp | Washing machine |
| WO2008105635A1 (en) * | 2007-02-27 | 2008-09-04 | Lg Electronics Inc. | Washing machine |
| WO2008120929A3 (en) * | 2007-03-31 | 2009-01-22 | Lg Electronics Inc | Washing machine and method of controlling the washing machine |
| US9885137B2 (en) | 2007-03-31 | 2018-02-06 | Lg Electronics Inc. | Washing machine and method of controlling the washing machine |
| JP2019500173A (en) * | 2016-01-05 | 2019-01-10 | エルジー エレクトロニクス インコーポレイティド | Laundry processing apparatus and method for supplying laundry |
| US10934658B2 (en) | 2016-01-05 | 2021-03-02 | Lg Electronics Inc. | Laundry treating apparatus and method for supplying washing agent thereof |
| JP2021029847A (en) * | 2019-08-28 | 2021-03-01 | 東芝ライフスタイル株式会社 | Clothing treatment device |
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