JP2000234802A - Automatic bath device - Google Patents
Automatic bath deviceInfo
- Publication number
- JP2000234802A JP2000234802A JP11035411A JP3541199A JP2000234802A JP 2000234802 A JP2000234802 A JP 2000234802A JP 11035411 A JP11035411 A JP 11035411A JP 3541199 A JP3541199 A JP 3541199A JP 2000234802 A JP2000234802 A JP 2000234802A
- Authority
- JP
- Japan
- Prior art keywords
- water
- circulation
- water level
- time
- bathtub
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 238000003303 reheating Methods 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims description 17
- 239000013505 freshwater Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 238000003287 bathing Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Control For Baths (AREA)
Abstract
Description
【０００１】[0001]
【発明に属する技術分野】本発明は、浴槽への湯張りを
自動的に行う自動風呂装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bath apparatus for automatically filling a bathtub with hot water.
【０００２】[0002]
【従来の技術】図４は、従来の自動風呂装置のシステム
構成図であり、図において、Ａは自動風呂装置本体、１
は適温に混合された湯を供給する注湯回路で、湯と水を
混合する混合弁２、混合後の温水を開閉する開閉弁３を
備えている。５は注湯回路１に接続された追い焚き循環
回路５で、この追い焚き循環回路５は往き配管５ａと戻
り配管５ｂとで構成され、往き配管５ａにはヒータ８が
設けられ、戻り配管５ｂには二方弁１３、フロースイッ
チ６、循環ポンプ４、水位センサ７の順で設けられてい
る。また、浴槽１１には風呂アダプタ１０が取り付けら
れており、追い焚き循環回路５と浴槽アダプタ１０は風
呂往き配管９ａと風呂戻り配管９ｂで接続されている。
また、１２は前記追い焚き循環回路５の往き配管５aと
戻り配管５bと前記注湯回路１の開閉弁３との交点部に
設置された温度センサ１２であり、注湯時には開閉弁３
方向より供給される湯温を検知し、保温時には循環ポン
プ４により循環する浴槽水の温度を検知する。なお、図
４中、二点鎖線Ｂで囲まれる部分を一般に鳥居配管と呼
んでおり、実際に住宅などに本装置を設置する際、基礎
を跨いだりする必要が生じたときなどに行われる配管手
段である。2. Description of the Related Art FIG. 4 is a system configuration diagram of a conventional automatic bath apparatus. In FIG.
Is a pouring circuit for supplying hot water mixed at an appropriate temperature, and includes a mixing valve 2 for mixing hot water and water, and an on-off valve 3 for opening and closing hot water after mixing. Reference numeral 5 denotes a reheating circuit 5 connected to the pouring circuit 1. The reheating circuit 5 includes an outgoing pipe 5a and a return pipe 5b. The outgoing pipe 5a is provided with a heater 8, and a return pipe 5b. , A two-way valve 13, a flow switch 6, a circulation pump 4, and a water level sensor 7 are provided in this order. A bath adapter 10 is attached to the bathtub 11, and the reheating circuit 5 and the bathtub adapter 10 are connected by a bath going pipe 9a and a bath returning pipe 9b.
Reference numeral 12 denotes a temperature sensor 12 installed at the intersection of the outgoing pipe 5a and return pipe 5b of the reheating circuit 5 and the on-off valve 3 of the pouring circuit 1.
The temperature of the hot water supplied from the direction is detected, and the temperature of the bath water circulated by the circulation pump 4 at the time of keeping the temperature is detected. In FIG. 4, a portion surrounded by a two-dot chain line B is generally called a torii pipe, and when installing the apparatus in a house or the like, a pipe is performed when it is necessary to cross a foundation. Means.
【０００３】次に上記構成よりなる従来装置の動作につ
いて説明する。まず、別途の水源および給湯装置（図示
せず）より注湯回路１に供給される湯と水を混合弁２に
より所望温度の温水になるように混合し、開閉弁３を開
いて追い焚き循環回路５へ給湯する。このとき、二方弁
１３は開状態である。給湯された温水は温度センサ１２
により給湯温度が検出され、往き配管５ａと戻り配管５
ｂをそれぞれ経由し、風呂往き配管９ａと風呂戻り配管
９ｂを介して風呂アダプタ１０より浴槽１１へ供給さ
れ、給湯が開始される。湯張りの途中、前記風呂アダプ
タ１０よりも浴槽１１内の水位が上昇したことを水位セ
ンサ７が検知した場合、必要に応じて随時、往き配管５
ａ、戻り配管５ｂ、風呂往き配管９ａ、風呂戻り配管９
ｂ内に残留する空気を抜くために、循環ポンプ４を運転
する動作を一定時間行う。また、湯張り途中で、随時、
開放弁３を閉じて戻り配管５ｂ側からの注水を停止する
と共に、水位センサ７に生じる浴槽１１からの水頭圧を
検出し、この値から浴槽１１内の水位を検出する。そし
て、水位センサ７があらかじめ設定した水位まで浴槽１
１内の水位が上昇したことを検知すると、湯張り動作を
完了する。[0003] Next, the operation of the conventional apparatus having the above configuration will be described. First, hot water and water supplied to a pouring circuit 1 from a separate water source and a hot water supply device (not shown) are mixed by a mixing valve 2 so as to obtain hot water at a desired temperature, and the on-off valve 3 is opened to reheat and recirculate. Hot water is supplied to the circuit 5. At this time, the two-way valve 13 is in the open state. The supplied hot water is supplied to a temperature sensor 12
The hot water supply temperature is detected by the
b, the water is supplied from the bath adapter 10 to the bathtub 11 via the bath going pipe 9a and the bath returning pipe 9b, and hot water supply is started. If the water level sensor 7 detects that the water level in the bathtub 11 has risen above the bath adapter 10 during the filling, the outgoing pipe 5
a, return pipe 5b, bath pipe 9a, bath return pipe 9
The operation of operating the circulation pump 4 is performed for a certain period of time to remove the air remaining in b. Also, at any time during the bathing,
The opening valve 3 is closed to stop the water injection from the return pipe 5b side, and the head pressure from the bathtub 11 generated in the water level sensor 7 is detected, and the water level in the bathtub 11 is detected from this value. Then, the bathtub 1 reaches the water level set by the water level sensor 7 in advance.
When it is detected that the water level in 1 has risen, the filling operation is completed.
【０００４】設定水位まで湯張りが完了すると、循環ポ
ンプ４で浴槽１１内の温水を循環させ、温度センサ１２
で循環する温水温度を検知し、温水の温度が低下すると
ヒータ８により加熱して浴槽１１内の温水を適温に保温
する。When the filling is completed to the set water level, the hot water in the bathtub 11 is circulated by the circulation pump 4 and the temperature sensor 12
The temperature of the hot water circulating is detected, and when the temperature of the hot water decreases, the temperature of the hot water in the bathtub 11 is maintained at an appropriate temperature by heating with the heater 8.
【０００５】また、使用者が入浴を終えた後など、浴槽
１１内の湯を抜いたときには、湯が抜けていくことによ
る水位低下を水位センサ７で検知し、風呂アダプタ１０
以下まで水位が低下したことを検知した時点で、入浴は
終了したと判断し、風呂循環配管９ａ,９ｂ内に残留す
る入浴後の温水を排水するために、開閉弁３を開いて清
水（ここでは、入浴後の汚れを含む水に対して、水源か
らの水を区別して清水という）を追い焚き循環回路５の
往き配管5ａと戻り配管５ｂ及び風呂往き配管９ａと風
呂戻り配管９ｂへ注入する。これにより、上記配管内部
に残っていた入浴による汚れを含んだ温水は、機器外へ
排出されるので、残留水が原因の配管内への汚れの付着
や腐食、あるいは細菌等の発生などが抑制され、機器の
長寿命化やクリーン化が図れる。上記排水後の清水を注
入して残留水を排出する動作を、ここではセルフクリー
ン動作と呼ぶ。[0005] When the user removes hot water from the bathtub 11 after finishing bathing, the water level sensor 7 detects a drop in water level due to the hot water being drained, and the bath adapter 10
When it is detected that the water level has dropped to below, it is determined that bathing has been completed, and in order to drain hot water remaining after bathing in the bath circulation pipes 9a and 9b, the on-off valve 3 is opened and fresh water (here Then, for the water containing dirt after bathing, water from the water source is distinguished and called clean water) and injected into the outgoing pipe 5a and the return pipe 5b, and the outgoing pipe 9a and the bath return pipe 9b of the reheating circuit 5. . As a result, the hot water containing dirt due to bathing remaining inside the pipe is discharged to the outside of the apparatus, so that the adhesion of dirt and corrosion of the pipe due to the residual water, or the generation of bacteria and the like are suppressed. As a result, the life of the device can be extended and the device can be cleaned. The operation of injecting the fresh water after the drainage and discharging the residual water is herein referred to as a self-cleaning operation.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
自動風呂装置は、以下のような問題点があった。すなわ
ち、入浴後の排水時に水位センサ７が正しく浴槽１１内
の水位を読み取り、動作すべき風呂アダプタ１０のポイ
ントで上述のセルフクリーン動作を行うことができれば
全く問題はないが、水位センサ７の測定誤差の影響や実
設置状態での風呂循環配管のされ方によっては、必ずし
も正しい水位を的確に検知することができない。例え
ば、入浴中であるにもかかわらず、誤った水位検知によ
り排水状態と判断された場合、入浴中に風呂アダプタ１
０から一定量の低温水が給水されることになり、入浴者
に不快感を与えるだけでなく、水の無駄にもなり、経済
的ではないという問題点があった。However, the conventional automatic bath apparatus has the following problems. That is, there is no problem if the water level sensor 7 can correctly read the water level in the bathtub 11 at the time of drainage after bathing and perform the self-cleaning operation at the point of the bath adapter 10 to be operated. Depending on the influence of the error and the way the bath circulation piping is installed in the actual installation state, it is not always possible to accurately detect the correct water level. For example, if it is determined that the state of drainage is due to erroneous water level detection even while bathing, the bath adapter 1
A certain amount of low-temperature water is supplied from 0, which not only gives a bather discomfort but also wastes water and is not economical.
【０００７】このような問題点への対処のため、上記従
来例のようなフロースイッチ６を備えた機器において
は、水位センサ７で水位低下を検知したあと、循環ポン
プ４を動作させながらフロースイッチ６の動作を監視
し、フロースイッチ６が動作しない場合には風呂アダプ
タ１０以下に水位が低下したことになるので、これをも
ってセルフクリーン動作に移る制御を行っているものも
あったが、この場合、セルフクリーン動作に移る直前の
配管内部の残留水状態は図４に示すように、循環ポンプ
４で押し出す側となる往き配管５ａおよび風呂往き配管
９ａ側はほぼ満水となる一方で、循環ポンプ４で吸い込
まれる側となる風呂戻り配管９ｂおよび戻り配管５ｂ側
は空気が風呂アダプタ１０より吸入され、中途半端な状
態となる。このような中途半端な状態で、セルフクリー
ン動作のため、開閉弁３を開くと、往き側の各配管5
ａ、９ａ側は浴槽１１を基準とする水頭圧は図のＨ１と
なるが、戻り側の各配管５ｂ、９ｂ側は図４のＨ位置で
鳥居配管内に水頭が残留している場合、この鳥居配管の
高さＨ３を越えるための水頭圧が必要となり、往き側の
配管の必要圧Ｈ１に比べて相当高い水圧が必要となって
しまうので、特に水源や湯側の供給源が電気温水器等の
減圧弁を搭載した機器である場合などは、図４のように
Ｈ２程度（Ｈ３＞Ｈ２）の水頭圧しか得られないため、
結果として、戻り側の配管内のセルフクリーン動作が行
えないというような問題点があった。In order to deal with such a problem, in a device provided with a flow switch 6 as in the above-mentioned conventional example, after detecting a decrease in the water level by a water level sensor 7, the flow switch is operated while operating the circulation pump 4. 6 is monitored, and if the flow switch 6 does not operate, the water level has dropped below the bath adapter 10, so that there is a control that shifts to a self-cleaning operation. As shown in FIG. 4, the state of the residual water in the pipe immediately before shifting to the self-cleaning operation is almost full at the outgoing pipe 5a and the bath outgoing pipe 9a which are pushed out by the circulating pump 4, while the circulating pump 4 The air is sucked from the bath adapter 10 into the bath return pipe 9b and the return pipe 5b, which are the sides to be sucked in, and the state is halfway. In such a halfway state, when the on-off valve 3 is opened for a self-cleaning operation, each pipe 5 on the outgoing side is opened.
The a and 9a sides have a head pressure of H1 in the figure with reference to the bathtub 11, but the return side pipes 5b and 9b have a water head pressure of H in FIG. A water head pressure is required to exceed the height H3 of the torii pipe, which requires a considerably higher water pressure than the required pressure H1 of the pipe on the outgoing side. In the case of a device equipped with a pressure reducing valve such as the above, only the head pressure of about H2 (H3> H2) can be obtained as shown in FIG.
As a result, there is a problem that the self-cleaning operation in the return pipe cannot be performed.
【０００８】[0008]
【課題を解決するための手段】本発明は上記のような問
題点を解消するためになされたもので、適温に混合され
た湯を給湯する注湯回路と、この注湯回路に接続され往
き配管と戻り配管からなる追い焚き循環回路と、本装置
の運転を制御する制御部を備え、前記浴槽水の排水後、
注湯回路から追い焚き回路の配管内部に清水を注入して
配管内部の残留水を排出するセルフクリーン動作を行う
ようにした自動風呂装置において、少なくとも前記追い
焚き循環回路の往き配管に温水の循環を検出するための
フロースイッチ、浴槽内の水位を検出する水位センサ、
往き配管と戻り配管とを連通・遮断する二方弁を設ける
とともに、前記追い焚き循環回路の戻り配管に浴槽の温
水を循環させる循環ポンプを設け、前記水位センサで浴
槽水の排水を検知した後、循環ポンプを一定時間動作さ
せながらフロースイッチで循環の有無を検知し、循環が
検知できない場合に、前記二方弁を閉じて戻り配管側へ
清水の注入を一定時間行った後、更に前記二方弁を開い
て清水の注入を一定時間行うものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a pouring circuit for supplying hot water mixed at an appropriate temperature, and a pouring circuit connected to the pouring circuit. A reheating circuit comprising a pipe and a return pipe, and a control unit for controlling the operation of the present apparatus, after draining the bathtub water,
In an automatic bath apparatus configured to perform a self-cleaning operation of injecting fresh water from the pouring circuit into the piping of the reheating circuit and discharging residual water from the piping, circulation of hot water at least in the outward piping of the reheating circuit. Flow switch for detecting water level, water level sensor for detecting water level in bathtub,
After providing a two-way valve for communicating and shutting off the going pipe and the return pipe, and providing a circulation pump for circulating hot water in the bathtub in the return pipe of the reheating circuit, after detecting the drainage of the bathtub water by the water level sensor While the circulation pump is operated for a certain period of time, the presence or absence of circulation is detected by a flow switch. If the circulation cannot be detected, the two-way valve is closed to inject fresh water into the return pipe for a certain period of time. The valve is opened and fresh water is injected for a certain period of time.
【０００９】また、前記循環ポンプを一定時間動作させ
ながらフロースイッチで循環の有無を検知する際、循環
が検知できた場合は、さらに一定量の水位低下を検出し
た後、再度循環ポンプを一定時間動作させながらフロー
スイッチで循環の有無を検出する動作を行うものであ
る。When detecting the presence or absence of circulation with the flow switch while operating the circulating pump for a certain period of time, if the circulation is detected, the lowering of the water level is further detected by a certain amount, and then the circulating pump is turned on again for a certain period of time. The operation of detecting the presence / absence of circulation with the flow switch is performed while operating.
【００１０】[0010]
【発明の実施の形態】実施の形態１．以下、本発明の実
施の形態１について説明する。図１は、本発明の実施の
形態１を示すシステム構成図であり、図２はその制御ブ
ロック図である。なお、図１に示すシステム構成は、図
４の従来例と全く同一であるので、同一符号を付し、詳
細な説明は省略する。図１において、Ａは自動風呂装置
本体、１は適温に混合された湯を供給する注湯回路、２
は湯と水を混合する混合弁、３は混合後の温水を開閉す
る開閉弁、４は循環ポンプ、５は注湯回路１に接続され
た追い焚き循環回路、５ａ,５ｂはこの追い焚き循環回
路５の往き配管と戻り配管、６はフロースイッチ、７は
水位センサ、８はヒータ、１３は二方弁、１０は風呂ア
ダプタ、１１は浴槽、９ａ,９ｂは追い焚き循環回路５
と浴槽アダプタ１０間を接続する風呂往き配管９ａと風
呂戻り配管９ｂである。なお、前記二方弁１３、フロー
スイッチ６、水位センサ７、ヒータ８は追い焚き循環回
路５の往き配管５a側にそれぞれ設置され、戻り配管５b
側には循環ポンプ４だけが設置されるようにしている。
図２において、１５は装置全体を制御する制御部であ
り、判断部１５ａと記憶部１５ｂを備え、自動風呂本体
Ａの内蔵部品である前記フロースイッチ６、水位センサ
７、循環ポンプ４、ヒータ８、開閉弁３、混合弁２、二
方弁１３の動作を制御する。また、１６は前記制御部１
５に対する制御指示入力を行う入力部であり、湯張り動
作や保温動作などの所望動作が使用者より入力される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described. FIG. 1 is a system configuration diagram showing Embodiment 1 of the present invention, and FIG. 2 is a control block diagram thereof. Since the system configuration shown in FIG. 1 is completely the same as the conventional example shown in FIG. 4, the same reference numerals are given and the detailed description is omitted. In FIG. 1, A is an automatic bath apparatus main body, 1 is a pouring circuit for supplying hot water mixed at an appropriate temperature, 2
Is a mixing valve for mixing hot and cold water, 3 is an on-off valve for opening and closing hot water after mixing, 4 is a circulation pump, 5 is a reheating circuit connected to the pouring circuit 1, and 5a and 5b are reheating circuits. Outgoing and return piping of the circuit 5, 6 is a flow switch, 7 is a water level sensor, 8 is a heater, 13 is a two-way valve, 10 is a bath adapter, 11 is a bathtub, 9a and 9b are reheating circuit 5
A bath outgoing pipe 9a and a bath return pipe 9b connecting between the bathtub adapter 10. The two-way valve 13, the flow switch 6, the water level sensor 7, and the heater 8 are respectively installed on the outgoing pipe 5 a side of the reheating circuit 5, and the return pipe 5 b
Only the circulation pump 4 is provided on the side.
In FIG. 2, reference numeral 15 denotes a control unit for controlling the entire apparatus, which includes a determination unit 15a and a storage unit 15b, and includes the flow switch 6, the water level sensor 7, the circulation pump 4, and the heater 8 which are built-in parts of the automatic bath body A. , The operation of the on-off valve 3, the mixing valve 2, and the two-way valve 13 are controlled. 16 is the control unit 1
This is an input unit for inputting a control instruction to the control unit 5, and a user inputs a desired operation such as a filling operation or a warming operation.
【００１１】次に、上記構成によりなる本発明の実施の
形態１における動作について、説明する。なお、湯張り
動作および循環保温動作については、従来例と全く同一
であるので、説明を省略する。図３は本発明によるセル
フクリーン動作の制御フローチャートである。Next, the operation of the first embodiment of the present invention having the above configuration will be described. Note that the filling operation and the circulating heat retaining operation are completely the same as those in the conventional example, and the description thereof will be omitted. FIG. 3 is a control flowchart of the self-cleaning operation according to the present invention.
【００１２】使用者が入浴を終えた後など、浴槽１１の
湯を抜いたとき行うセルフクリーン動作について、図３
の制御フローチャートを用いて説明する。まず、図３の
ステップＳ１では、排水の状態を判断する。浴槽１１よ
り湯が抜けていくことによる水位低下を水位センサ７で
検知し、この水位センサ７の検知信号から制御部１５の
判断部１５ａが風呂アダプタ１０以下まで水位が低下し
たと判断した場合、ステップＳ２に進み、循環ポンプ４
を運転させる。一方、排水が検知されない場合は、ステ
ップＳ１を繰り返す。次に、ステップＳ３では循環ポン
プ４の運転中にフロースイッチ６の動作の有無を制御部
１５の判断部１５ａが判断し、フロースイッチ６の動作
を検知した場合は、制御部１５は循環ポンプ４を停止し
てステップＳ１へ戻る。一方、ステップＳ３で、フロー
スイッチ６が動作しなかった場合は、判断部１５ａは浴
槽１１の水位が風呂アダプタ１０以下に低下したと判断
し、ステップＳ５に進み、循環ポンプ４の動作を停止さ
せ、続いて、ステップＳ６で、制御部１５は二方弁１３
を閉じた後、ステップＳ７に進み、開閉弁３を開いて注
湯回路１から清水の注水を行うことにより、循環ポンプ
４の動作で図１のＨの位置まで変化した風呂戻り配管９
ｂ内に残留する水位を図中矢印Ｃ方向に水源水圧により
押し上げていく。ここで、水源水圧によりやがて、鳥居
配管を越えた水位は風呂アダプタ１０にまで至り、行き
戻りの両配管が水で充填されることになる。制御上で
は、ここまでにかかる時間をあらかじめ想定したある一
定時間を設定しておき、それに達するまで開閉弁３を開
く動作を続ける。（図３のステップＳ８に相当） 一定時間が経過すると、ステップＳ９に進んで二方弁１
３を開き、往き戻り両配管に注水を行う。このときには
すでに往き戻りの両配管は水で充填されているので、そ
の水頭差は図のＨ１相当でほぼ同じであるから、両配管
とも等しく注水され、セルフクリーン動作が正しく行え
る。ステップＳ１０では、前記二方弁１３を開いてから
一定時間が経過したかどうかを判断し、一定時間の経過
後、ステップＳ１１に進み、開閉弁３を閉じてセルフク
リーン動作の全行程を終了する。これにより、水位セン
サ７で浴槽水の排水を検知した後、循環ポンプ４を一定
時間動作させながらフロースイッチ６で循環の有無を検
知し、循環が検知できない場合に、二方弁１３を閉じて
戻り配管側へ清水の注入を一定時間行った後、更に前記
二方弁１３を開いて清水の注入を一定時間行うので、入
浴後の排水時に水位センサ７の測定誤差の影響や風呂循
環配管の途中に鳥居配管などが形成されていて、正しい
水位を的確に検知することができない場合にも、入浴中
に風呂アダプタ１０から低温水が給水されたりするよう
な不具合が無く、入浴者に不快感を与えることがない。
また、水の無駄も防止できるので、経済的にも有利で確
実なセルフクリーン動作が可能となる。FIG. 3 shows a self-cleaning operation performed when the bathtub 11 is drained, such as after the user finishes bathing.
This will be described with reference to the control flowchart of FIG. First, in step S1 of FIG. 3, the state of drainage is determined. When the water level sensor 7 detects a drop in the water level due to the hot water being drained from the bathtub 11, and when the determination unit 15 a of the control unit 15 determines that the water level has dropped below the bath adapter 10 from the detection signal of the water level sensor 7, Proceeding to step S2, the circulation pump 4
Drive. On the other hand, if no drainage is detected, step S1 is repeated. Next, in step S3, the determination unit 15a of the control unit 15 determines whether or not the flow switch 6 is operating while the circulation pump 4 is operating, and when the operation of the flow switch 6 is detected, the control unit 15 And returns to step S1. On the other hand, if the flow switch 6 does not operate in step S3, the determining unit 15a determines that the water level in the bathtub 11 has dropped below the bath adapter 10, and proceeds to step S5 to stop the operation of the circulation pump 4. Subsequently, in step S6, the control unit 15 sets the two-way valve 13
Then, the process proceeds to step S7, in which the opening / closing valve 3 is opened to inject fresh water from the pouring circuit 1, whereby the bath return pipe 9 changed to the position H in FIG.
The water level remaining in b is pushed up by the water source water pressure in the direction of arrow C in the figure. Here, due to the water pressure of the water source, the water level that exceeds the torii pipe eventually reaches the bath adapter 10, and both the returning pipes are filled with water. In the control, a certain period of time is set in advance assuming the time taken so far, and the operation of opening the on-off valve 3 is continued until the time reaches the certain time. (Corresponding to step S8 in FIG. 3) After a predetermined time has elapsed, the process proceeds to step S9, where the two-way valve 1
Open 3 and go back and inject water into both pipes. At this time, since both the returning pipes are already filled with water, the head difference is substantially the same as H1 in the figure, so that both pipes are equally injected and the self-cleaning operation can be performed correctly. In step S10, it is determined whether or not a predetermined time has elapsed since the opening of the two-way valve 13. After the predetermined time has elapsed, the process proceeds to step S11, where the on-off valve 3 is closed and the entire process of the self-cleaning operation is completed. . Thereby, after detecting the drainage of the bathtub water by the water level sensor 7, the presence or absence of circulation is detected by the flow switch 6 while operating the circulation pump 4 for a certain time, and when the circulation cannot be detected, the two-way valve 13 is closed. After injecting fresh water into the return pipe for a certain period of time, the two-way valve 13 is further opened to inject fresh water for a certain period of time. Even when a torii pipe or the like is formed on the way and the correct water level cannot be accurately detected, there is no problem that low-temperature water is supplied from the bath adapter 10 during bathing, and the bather is uncomfortable. Never give.
Further, since waste of water can be prevented, an economically advantageous and reliable self-cleaning operation can be performed.
【００１３】[0013]
【発明の効果】以上のように本発明によれば、適温に混
合された湯を給湯する注湯回路と、この注湯回路に接続
され往き配管と戻り配管からなる追い焚き循環回路と、
本装置の運転を制御する制御部を備え、前記浴槽水の排
水後、注湯回路から追い焚き回路の配管内部に清水を注
入して配管内部の残留水を排出するセルフクリーン動作
を行うようにした自動風呂装置において、少なくとも前
記追い焚き循環回路の往き配管に温水の循環を検出する
ためのフロースイッチ、浴槽内の水位を検出する水位セ
ンサ、往き配管と戻り配管とを連通・遮断する二方弁を
設けるとともに、前記追い焚き循環回路の戻り配管に浴
槽の温水を循環させる循環ポンプを設け、前記水位セン
サで浴槽水の排水を検知した後、循環ポンプを一定時間
動作させながらフロースイッチで循環の有無を検知し、
循環が検知できない場合に、前記二方弁を閉じて戻り配
管側へ清水の注入を一定時間行った後、更に前記二方弁
を開いて清水の注入を一定時間行うので、入浴後の排水
時に水位センサの測定誤差の影響や実設置状態での風呂
循環配管のされ方によって、正しい水位を的確に検知す
ることができない場合にあっても、入浴中に風呂アダプ
タから給水がされたりするような不具合を生じること無
く、入浴者に不快感を与えることがない。また水の無駄
な使用を防止することが可能となる。As described above, according to the present invention, a pouring circuit for supplying hot water mixed at an appropriate temperature, a reheating circuit which is connected to the pouring circuit and includes a forward pipe and a return pipe,
A control unit for controlling the operation of the present apparatus is provided.After draining the bathtub water, a self-cleaning operation of injecting fresh water from the pouring circuit into the piping of the reheating circuit and discharging residual water from the piping is performed. In the automatic bath apparatus described above, at least a flow switch for detecting circulation of hot water in the outgoing pipe of the reheating circuit, a water level sensor for detecting a water level in the bathtub, and two ways for communicating and shutting off the outgoing pipe and the return pipe. A valve is provided, and a circulating pump for circulating hot water in the bathtub is provided in the return pipe of the reheating circuit. After detecting the drainage of the bathtub water by the water level sensor, the circulation pump is circulated by operating the circulation pump for a certain period of time. Is detected,
When circulation cannot be detected, after closing the two-way valve and injecting fresh water to the return pipe side for a certain period of time, further opening the two-way valve and injecting fresh water for a certain period of time, so when draining after bathing, Even if the correct water level cannot be accurately detected due to the effect of the measurement error of the water level sensor or the way of the bath circulation piping in the actual installation state, water may be supplied from the bath adapter during bathing. The bather does not cause any discomfort without causing any trouble. In addition, it is possible to prevent useless use of water.
【００１４】また、前記循環ポンプを一定時間動作させ
ながらフロースイッチで循環の有無を検知する際、循環
が検知できた場合は、さらに一定量の水位低下を検出し
た後、再度循環ポンプを一定時間動作させながらフロー
スイッチで循環の有無を検出する動作を行うので、セル
フクリーン動作に移る直前の配管内部の残留水の状態に
よらず、また特に水源や湯側の供給源が電気温水器等の
減圧弁を搭載した機器である場合でも、常に安定した配
管のセルフクリーン動作が可能となる。When detecting the presence / absence of circulation with the flow switch while operating the circulation pump for a certain period of time, if the circulation can be detected, the lowering of the water level is further detected by a certain amount, and then the circulation pump is turned on again for a certain period of time. Since the flow switch detects the presence or absence of circulation during operation, it does not depend on the state of residual water in the piping immediately before shifting to the self-cleaning operation. Even if the device is equipped with a pressure reducing valve, a stable self-cleaning operation of the piping can be always performed.
【図１】 本発明の実施の形態１を示す自動風呂装置の
システム構成図である。FIG. 1 is a system configuration diagram of an automatic bath apparatus according to a first embodiment of the present invention.
【図２】 本発明の実施の形態１を示す自動風呂装置の
制御ブロック図である。FIG. 2 is a control block diagram of the automatic bath apparatus according to Embodiment 1 of the present invention.
【図３】 本発明の実施の形態１を示す自動風呂装置の
セルフクリーン動作の制御フローチャートである。FIG. 3 is a control flowchart of a self-cleaning operation of the automatic bath apparatus according to the first embodiment of the present invention.
【図４】 従来の自動風呂装置のシステム構成図であ
る。FIG. 4 is a system configuration diagram of a conventional automatic bath apparatus.
Ａ 自動風呂装置本体、２ 混合弁、３ 開閉弁、４
循環ポンプ、５ 追い焚き循環配管、５ａ 往き配管、
５ｂ 戻り配管、６ フロースイッチ、７ 水位セン
サ、９ａ 風呂往き配管、９ｂ 風呂戻り配管、１１
浴槽、１３ 二方弁、１５ 制御部。A Automatic bath equipment main unit, 2 mixing valve, 3 on-off valve, 4
Circulation pump, 5 additional heating circulation piping, 5a outgoing piping,
5b return piping, 6 flow switch, 7 water level sensor, 9a bath going piping, 9b bath returning piping, 11
Bathtub, 13 two-way valve, 15 control unit.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 斎藤 孝 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 Ｆターム(参考） 3L024 CC03 DD01 DD17 DD27 GG12 GG28 GG41 HH13 HH31 HH39 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takashi Saito 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation F-term (reference) 3L024 CC03 DD01 DD17 DD27 GG12 GG28 GG41 HH13 HH31 HH39
Claims (2)
と、この注湯回路に接続され往き配管と戻り配管からな
る追い焚き循環回路と、本装置の運転を制御する制御部
を備え、前記浴槽水の排水後、注湯回路から追い焚き回
路の配管内部に清水を注入して配管内部の残留水を排出
するセルフクリーン動作を行うようにした自動風呂装置
において、少なくとも前記追い焚き循環回路の往き配管
に温水の循環を検出するためのフロースイッチ、浴槽内
の水位を検出する水位センサ、往き配管と戻り配管とを
連通・遮断する二方弁を設けるとともに、前記追い焚き
循環回路の戻り配管に浴槽の温水を循環させる循環ポン
プを設け、前記水位センサで浴槽水の排水を検知した
後、循環ポンプを一定時間動作させながらフロースイッ
チで循環の有無を検知し、循環が検知できない場合に、
前記二方弁を閉じて戻り配管側へ清水の注入を一定時間
行った後、更に前記二方弁を開いて清水の注入を一定時
間行うことを特徴とする自動風呂装置。1. A pouring circuit for supplying hot water mixed at an appropriate temperature, a reheating circuit connected to the pouring circuit, comprising a feed pipe and a return pipe, and a control unit for controlling the operation of the present apparatus. In an automatic bath apparatus configured to perform a self-cleaning operation of injecting fresh water from a pouring circuit into the piping of a reheating circuit after draining the bathtub water and discharging residual water from the piping, at least the reheating circulation A flow switch for detecting circulation of hot water in the outgoing pipe of the circuit, a water level sensor for detecting the water level in the bathtub, a two-way valve for communicating and shutting off the outgoing pipe and the return pipe are provided, and the reheating circuit is provided. A return pump is provided with a circulation pump for circulating hot water in the bathtub, and after detecting the drainage of the bathtub water by the water level sensor, the presence of circulation is detected by a flow switch while operating the circulation pump for a certain period of time. And if the circulation cannot be detected,
An automatic bath apparatus characterized in that after closing the two-way valve and injecting fresh water into the return pipe for a certain time, the two-way valve is further opened to inject fresh water for a certain time.
らフロースイッチで循環の有無を検知する際、循環が検
知できた場合は、さらに一定量の水位低下を検出した
後、再度循環ポンプを一定時間動作させながらフロース
イッチで循環の有無を検出する動作を行うことを特徴と
する請求項１記載の自動風呂装置。2. When detecting the presence or absence of circulation with a flow switch while operating the circulation pump for a certain period of time, if the circulation is detected, after detecting a further decrease in the water level, the circulation pump is again turned on for a certain period of time. 2. The automatic bath apparatus according to claim 1, wherein an operation of detecting the presence or absence of circulation with a flow switch is performed while operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03541199A JP4003337B2 (en) | 1999-02-15 | 1999-02-15 | Automatic bath equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03541199A JP4003337B2 (en) | 1999-02-15 | 1999-02-15 | Automatic bath equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000234802A true JP2000234802A (en) | 2000-08-29 |
| JP4003337B2 JP4003337B2 (en) | 2007-11-07 |
Family
ID=12441151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03541199A Expired - Fee Related JP4003337B2 (en) | 1999-02-15 | 1999-02-15 | Automatic bath equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4003337B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006300481A (en) * | 2005-04-25 | 2006-11-02 | Gastar Corp | Bath hot water supply device |
| JP2015059668A (en) * | 2013-09-17 | 2015-03-30 | 日立アプライアンス株式会社 | Hot water supply |
| JP2017219255A (en) * | 2016-06-08 | 2017-12-14 | 株式会社デンソー | Water heater |
-
1999
- 1999-02-15 JP JP03541199A patent/JP4003337B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006300481A (en) * | 2005-04-25 | 2006-11-02 | Gastar Corp | Bath hot water supply device |
| JP2015059668A (en) * | 2013-09-17 | 2015-03-30 | 日立アプライアンス株式会社 | Hot water supply |
| JP2017219255A (en) * | 2016-06-08 | 2017-12-14 | 株式会社デンソー | Water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4003337B2 (en) | 2007-11-07 |
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