JP2506284B2 - Bath equipment - Google Patents

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は風呂装置、特に、浴槽内
水位が低下したときに自動的に浴槽に温水補充（以下、
補水という）を行ってその水位を一定に保ち得るように
した風呂装置に関するもので、補水に先立って行う浴槽
内水位の検知動作中に設定水位の変更があった場合には
該水位変更に速やかに追随し得るようにしたものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath device, and more particularly to a bath device which is automatically replenished with hot water when the water level in the bathtub decreases (hereinafter referred to as
This is related to a bath device that can maintain the water level at a constant level by performing water replenishment), and if there is a change in the set water level during the operation of detecting the water level in the bathtub that is performed prior to water replenishment, promptly change the water level. It is designed to be able to follow.

【０００２】[0002]

【従来技術及び課題】浴槽内水位が低下したときに自動
的に浴槽に補水してその水位を一定に保ち得るようにし
た風呂装置が普及してきた。図３に示すように、給湯用
熱交換器(26)から引出した湯張り回路(20)には湯張り弁
(28)と逆流防止装置(29)と更に水位センサ(41)がこの順
序で上流側から挿入されており、上記湯張り弁(28)等は
マイクロコンピュータを組込んだ制御装置(3）に配線接
続されている。又、該制御装置(3）には浴室壁面に配設
したリモコン装置(18)が配線接続されており、該リモコ
ン装置(18)には浴槽(2）に湯張りする設定水位をセット
する為の水位設定器(17)が設けられている。2. Description of the Related Art A bath device has been widely used which is capable of automatically replenishing water in a bathtub to keep the water level constant when the water level in the bathtub is lowered. As shown in FIG. 3, a hot water filling valve (20) drawn from the hot water supply heat exchanger (26) has a hot water filling valve.
(28), the backflow prevention device (29) and the water level sensor (41) are inserted in this order from the upstream side, and the water filling valve (28) and the like are connected to a control device (3) incorporating a microcomputer. Wiring is connected. Further, a remote control device (18) arranged on the wall surface of the bathroom is connected to the control device (3) by wiring, and the remote control device (18) is for setting a set water level for filling the bathtub (2) with water. A water level setting device (17) is provided.

【０００３】このものでは、リモコン(18)に設けた操作
スイッチ(19)を操作すると浴槽(2）への湯張り動作が適
宜実行される。又、該湯張り完了後に浴槽(2）内の入浴
水が使用されてその水位が低下すると、湯張り回路(20)
を介して水位センサ(41)が検出する浴槽(2）内の水圧を
浴槽内水位として検知する。そして、該検知水位を制御
装置(3）が判断して湯張り弁(28)を開けると共に給湯用
ガスバーナ(24)を燃焼させ、これにより、浴槽(2）への
補水を行い、水位センサ(41)が検知する浴槽内水位が水
位設定器(17)でセットした設定水位に達すると、上記補
水動作を停止させる。以後、浴槽内水位が低下する毎に
上記と同様にして浴槽(2）への補水を繰返してその水位
を一定に維持する。In this device, when the operation switch (19) provided on the remote controller (18) is operated, the operation of filling the bathtub (2) with water is appropriately performed. Further, when the bath water in the bathtub (2) is used and the water level drops after completion of the filling, the filling circuit (20)
The water pressure in the bathtub (2) detected by the water level sensor (41) is detected as the water level in the bathtub. Then, the control device (3) judges the detected water level and opens the water filling valve (28) and burns the hot water supply gas burner (24), thereby replenishing water to the bathtub (2) and the water level sensor ( When the water level in the bathtub detected by 41) reaches the set water level set by the water level setter (17), the water refilling operation is stopped. Thereafter, every time the water level in the bathtub drops, the water level in the bathtub (2) is repeated in the same manner as described above to maintain the water level constant.

【０００４】ところがこのものでは、浴槽内水位が設定
水位を維持しているにも関わらずその水面が波打つと、
これに追随して水位センサ(41)の検知水位が変動し、該
変動周期に合せて湯張り弁(28)の開閉や給湯用ガスバー
ナ(24)がＯＮ・ＯＦＦする所謂チャタリング現象が発生
する。そこで上記不都合を解決するため、浴槽(2）内の
水面の波打ちが小さく然も浴槽内水位が設定水位より低
い場合にのみ該浴槽(2）への補水を行うようにすること
も考えられる。即ち、水位センサ(41)の検知水位の変化
を監視すると共に該水位変化が微小で然も上記検知水位
が設定水位より低い状態が一定時間（例えば２０秒程
度）だけ継続した場合には補水要求信号を出す補水判定
手段(43)を設けるのである。そして、該補水判定手段(4
3)から補水要求信号が出たときは水位設定器(17)の設定
水位まで浴槽(2）に補水を行なうようにするのである。However, in this case, when the water level in the bathtub maintains the set water level, but the water surface undulates,
Following this, the detected water level of the water level sensor (41) fluctuates, and a so-called chattering phenomenon occurs in which the water filling valve (28) is opened and closed and the hot water supply gas burner (24) is turned on and off in accordance with the fluctuation period. Therefore, in order to solve the above-mentioned inconvenience, it may be possible to replenish water in the bathtub (2) only when the water level in the bathtub (2) is small and the water level in the bathtub is lower than the set water level. That is, the change in the water level detected by the water level sensor (41) is monitored, and when the change in the water level is small and the detected water level is still lower than the set water level for a certain period of time (for example, about 20 seconds), a water replenishment request is made. The water replenishment determining means (43) that outputs a signal is provided. Then, the replenishment determination means (4
When the water replenishment request signal is output from 3), water is replenished in the bathtub (2) up to the set water level of the water level setting device (17).

【０００５】しかしながら、上記改良案のものでは、湯
張り設定水位を変更した場合に於ける湯張り所要時間が
長くなる場合がある。上記問題点について更に詳述す
る。上記改良案のものでは、設定水位と水位センサ(41)
の検知水位の差異や該水位センサ(41)の検知水位の変動
を補水判定手段(43)が監視している監視時間内に水位設
定器(17)で設定水位が変更された場合においても、補水
判定手段(43)が補水の要否を判断するのに要する上記監
視時間が経過するまでは水位変更が確認されない。この
ことから湯張り完了までに要する時間が長くなるのであ
る。However, in the case of the above-mentioned improvement plan, there is a case where the required time for filling the water when the water level for setting the water filling is changed. The above problems will be described in more detail. In the above improvement plan, the set water level and water level sensor (41)
Even when the set water level is changed by the water level setting device (17) within the monitoring time when the replenishment determination means (43) monitors the difference in the detected water level and the fluctuation of the detected water level of the water level sensor (41), The water level change is not confirmed until the monitoring time required for the replenishment water judging means (43) to judge the necessity of replenishing water. For this reason, the time required to complete the filling of water becomes longer.

【０００６】本発明は上記の点に鑑みて成されたもの
で、『浴槽内水位を検知する水位センサ(41)の出力を一
定時間だけ監視して該監視結果と水位設定器(17)の設定
水位によって浴槽(2）への補水の要否を判断する補水判
定手段(43)を設け、上記浴槽(2）への補水を要求する前
記補水判定手段(43)からの出力信号に基づいて前記浴槽
(2）への補水動作を行うようにした風呂装置』におい
て、湯張り設定水位を変更した場合に於ける湯張り所要
時間の短縮化を図ることをその課題とする。The present invention has been made in view of the above point, and "The output of the water level sensor (41) for detecting the water level in the bathtub is monitored for a certain period of time and the monitoring result and the water level setting device (17) are set. Based on the output signal from the replenishment water determination means (43) that requests replenishment water to the bathtub (2), a replenishment water determination means (43) that determines whether or not replenishment water is necessary for the bathtub (2) is provided. The bathtub
The problem is to shorten the time required for water filling when the water level set for water filling is changed in the "bath device adapted to refill water to (2)".

【０００７】[0007]

【手段】上記課題を解決する為の本発明の技術的手段
は、『水位設定器(17)で設定水位が変更されたか否かを
判断して水位変更された場合には水位変更信号を出す水
位変更検知手段(44)と、該水位変更検知手段(44)から水
位変更信号が発生したときには補水判定手段(43)による
判定を待つことなく変更後の設定水位とその時点に於け
る水位センサ(41)の検知水位を比較する水位比較手段(4
5)を設け、該水位比較手段(45)の出力に基づいて浴槽へ
の補水動作を行なうようにした』ことである。Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problem is to "determine whether or not the set water level has been changed by the water level setting device (17) and issue a water level change signal when the water level is changed. Water level change detection means (44), and when a water level change signal from the water level change detection means (44) is generated, the set water level after change and the water level sensor at that time without waiting for the judgment by the replenishment water judgment means (43) Water level comparison means for comparing the detected water levels in (41) (4
5) is provided, and the water replenishing operation for the bath is performed based on the output of the water level comparing means (45). "

【０００８】[0008]

【作用】上記技術的手段は次のように作用する。補水判
定手段(43)が浴槽(2）への補水の要否を判断している
間、即ち、水位センサ(41)が検知する浴槽内水位やその
変動等を一定時間だけ監視している間に水位設定器(17)
で設定水位が変更されると、水位変更検知手段(44)から
水位変更信号が出力される。すると、該水位変更信号に
より補水判定手段(43)の判定を待つことなく水位比較手
段(45)が駆動し、該水位比較手段(45)はその時点におけ
る水位センサ(41)の検知水位と変更された設定水位を比
較する。即ち、補水判定手段(43)が動作途中に設定水位
の変更があった場合には、該補水判定手段(43)による一
定時間の水位監視を行わないで、上記水位比較手段(45)
による比較結果に基づいて浴槽(2）への補水の要否を判
断するのである。The above technical means operates as follows. While the replenishment water judging means (43) judges the necessity of replenishing water to the bathtub (2), that is, while monitoring the water level in the bathtub detected by the water level sensor (41) and its fluctuation for a certain period of time. Water level setting device (17)
When the set water level is changed by, the water level change detection means (44) outputs a water level change signal. Then, the water level comparison means (45) is driven by the water level change signal without waiting for the determination of the water replenishment determination means (43), and the water level comparison means (45) changes the detected water level of the water level sensor (41) at that time. Compare the set water levels. That is, when the set water level is changed during the operation of the replenishment water judging means (43), the water level comparing means (45) is not used to monitor the water level for a certain period of time by the replenishing water judging means (43).
The necessity of refilling water in the bathtub (2) is judged based on the comparison result according to.

【０００９】[0009]

【効果】本発明は次の特有の効果を有する。補水判定手
段(43)が浴槽内水位等を監視している途中でも設定水位
の変更があった場合は補水判定手段(43)による監視を止
めて直ちに変更後の水位に基づいた補水動作に切替わる
から、湯張り設定水位を変更した後の湯張り所要時間が
短縮化できる。[Effect] The present invention has the following unique effects. If the set water level is changed even while the water level in the bath replenishment judging means (43) is monitoring, etc., the monitoring by the water replenishment judging means (43) is stopped and the water refilling operation is immediately switched to the water level based on the changed water level. Since it is changed, the time required for filling water after changing the set water level can be shortened.

【００１０】[0010]

【実施例】次に、上記した本発明の実施例を図面に従っ
て説明する。この実施に使用する風呂装置は図１に示す
ように、浴槽(2）内を昇温させる為の追焚き回路(21)を
具備する。追焚き用熱交換器(22)と浴槽(2）を循環する
追焚き回路(21)には、上記追焚き用熱交換器(22)の上流
側に位置させて温度センサ(40)，水位センサ(41)及び切
替弁(25)が上流側からこの順序で配設されている。又、
追焚き用熱交換器(22)の下流側には水流スイッチ(F) が
挿入されている。Embodiments of the present invention described above will now be described with reference to the drawings. As shown in FIG. 1, the bath apparatus used for this implementation comprises a reheating circuit (21) for raising the temperature inside the bathtub (2). In the reheating circuit (21) circulating in the reheating heat exchanger (22) and the bathtub (2), the temperature sensor (40) and the water level are located at the upstream side of the reheating heat exchanger (22). The sensor (41) and the switching valve (25) are arranged in this order from the upstream side. or,
A water flow switch (F) is inserted on the downstream side of the reheating heat exchanger (22).

【００１１】更に、追焚き回路(21)に於ける切替弁(25)
の部分には、給湯用熱交換器(26)から引出した給湯回路
(27)が接続されており、該給湯回路(27)には湯張り弁(2
8)と逆流防止装置(29)が挿入されている。上記各部品は
マイコンを組込んだ制御装置(3）に電気接続されている
と共に、該制御装置(3）には浴室(C) の壁面に配設され
たリモコン装置(18)が配線接続されており、更に、該リ
モコン装置(18)には、水位設定器(17)と操作スイッチ(1
9)が設けられている。Further, the switching valve (25) in the reheating circuit (21)
The hot water supply circuit drawn from the hot water heat exchanger (26)
(27) is connected, and a hot water filling valve (2
8) and backflow prevention device (29) are inserted. Each of the above parts is electrically connected to a control device (3) incorporating a microcomputer, and a remote control device (18) arranged on the wall of the bathroom (C) is connected to the control device (3) by wiring. In addition, the remote control device (18) has a water level setting device (17) and an operation switch (1
9) is provided.

【００１２】上記湯張り弁(28)や切替弁(25)等は制御装
置(3）のマイコン内に格納された図２に示す制御プログ
ラムに従って監視や制御が成されるようになっており、
以下、該制御動作について説明する。 （ア）．操作スイッチ(19)が投入されるのを監視し、こ
れが投入されると浴槽(2）への湯張り動作を実行する
（図面符号(71)のステップ参照）。即ち、給湯用ガスバ
ーナ(24)を燃焼させると共に湯張り弁(28)を開弁して浴
槽(2）への湯張り動作を開始し、水位センサ(41)の検知
する浴槽内水位が水位設定器(17)でセットした設定水位
になると湯張り弁(28)を閉じると共に給湯用ガスバーナ
(24)を消火させて湯張り動作を停止させるのである。 （イ）．上記湯張り動作時には、切替弁(25)の切替えに
よって給湯回路(27)→切替弁(25)→追焚き用熱交換器(2
2)→水流スイッチ(F) →浴槽(2）と繋がる回路が成立
し、その逆の回路即ち給湯回路(27)→切替弁(25)→ポン
プ(P) →水位センサ(41)→浴槽(2）と繋がる回路は上記
切替弁(25)によって遮断された状態になっている。The water filling valve (28), the switching valve (25), etc. are designed to be monitored and controlled according to the control program shown in FIG. 2 stored in the microcomputer of the control unit (3).
The control operation will be described below. (A). When the operation switch (19) is turned on, the operation of filling the bathtub (2) is executed when the operation switch (19) is turned on (see step of reference numeral (71)). That is, the hot water gas burner (24) is burned and the water filling valve (28) is opened to start the water filling operation to the bathtub (2), and the water level in the bathtub detected by the water level sensor (41) is set to the water level. When the set water level set in the vessel (17) is reached, the water filling valve (28) is closed and the hot water gas burner is closed.
(24) is extinguished and the filling operation is stopped. (I). During the above water filling operation, by switching the switching valve (25), the hot water supply circuit (27) → switching valve (25) → heat exchanger for reheating (2
2) → Water flow switch (F) → A circuit connected to the bathtub (2) is established, and the reverse circuit, that is, the hot water supply circuit (27) → switching valve (25) → pump (P) → water level sensor (41) → bathtub ( The circuit connected to 2) is shut off by the switching valve (25).

【００１３】そこで、上記（イ）の湯張り動作が完了し
た後は、切替弁(25)を同図の姿勢に切替えて追焚き回路
(21)が成立した状態にし、更にポンプ(P) を駆動させる
（図面符号(72)のステップ参照）。 （ウ）．上記ポンプ(P) の駆動によって浴槽(2）内水が
追焚き回路(21)内で循環することとなり、該水の温度を
検知して浴槽内温度を調べる温度センサ(40)の検知温度
（浴槽内温度）と設定温度を比較する（図面符号(73)の
ステップ参照）。そして、浴槽内温度が設定温度より低
い場合は、追焚き回路(21)の追焚き用ガスバーナ(23)を
燃焼させると共に、温度センサ(40)の検知温度を判断
し、該温度センサ(40)の検知温度が設定温度まで昇温す
ると追焚き用ガスバーナ(23)を消火させると共にポンプ
(P) を停止させて追焚き動作を完了させる（図面符号(7
4)のステップ参照）。そして、制御動作は浴槽内水位を
監視する図面符号(75)以下の工程に移行せしめられる。Therefore, after the hot water filling operation of (a) above is completed, the switching valve (25) is switched to the posture shown in FIG.
The condition (21) is established, and the pump (P) is further driven (see step (72)). (C). The water in the bathtub (2) is circulated in the reheating circuit (21) by driving the pump (P), and the temperature detected by the temperature sensor (40) that detects the temperature of the water and checks the bath temperature ( Compare the bath temperature) with the set temperature (see step (73)). Then, when the temperature in the bathtub is lower than the set temperature, the burning gas burner (23) of the heating circuit (21) is burned, and the temperature detected by the temperature sensor (40) is determined, and the temperature sensor (40) When the detected temperature of the pump rises to the set temperature, the fire gas burner (23) is extinguished and the pump
(P) is stopped to complete the reheating operation (drawing code (7
See step 4)). Then, the control operation is shifted to the step below the drawing code (75) for monitoring the water level in the bathtub.

【００１４】他方、図面符号(73)のステップで浴槽内温
度を判断した際にこれが設定温度以上になっている場合
はポンプ(P) を停止させ（図面符号(731) のステップ参
照）た後に浴槽内水位を監視する図面符号(75)以下の工
程を実行させる。 （エ）．図面符号(75)以下の工程は、浴槽内水位が低下
すると該浴槽(2）内に温水を補充してその水位を一定に
保つ為の工程である。On the other hand, when the temperature in the bathtub is judged to be higher than the set temperature when the temperature in the bathtub is judged in the step of the drawing code (73), the pump (P) is stopped (see the step of the drawing code (731)). The steps below the drawing code (75) for monitoring the water level in the bathtub are executed. (D). Steps below the reference numeral (75) are steps for replenishing the bathtub (2) with warm water to keep the water level constant when the water level in the bathtub is lowered.

【００１５】先ずマイコン内の水位設定メモリ(M1)に水
位設定器(17)でセットした設定水位Ｈを記憶させると共
に、後述する水位判定回数を判断する際に使用する判定
回数フラグＪを「０」にセットする（図面符号(75)のス
テップ参照）。 （オ）．次に、水位設定器(17)で設定水位Ｈが変更され
たか否かを判断する（図面符号(76)のステップ参照）。
即ち、上記図面符号(75)のステップを実行した際に水位
設定メモリ(M1)に記憶させた設定水位と、現在の水位設
定器(17)の設定水位を比較する等して設定水位が変更さ
れたか否かを判断するのである。そして、設定水位が変
更されていると判断される場合には、その時点に於ける
水位センサ(41)の検知水位と変更後の設定水位Ｈを比較
し（図面符号(87)のステップ参照）、前者の検知水位が
後者の設定水位Ｈ以下の場合は図面符号(84)以下の補水
動作に移行する。又、前者の検知水位が後者の変更後の
設定水位Ｈより大きいときは再度浴槽内温度の判断（図
面符号(73)のステップ参照）とその後の補水の要否を判
断する図面符号(75)以下のステップを実行する。First, the set water level H set by the water level setter (17) is stored in the water level setting memory (M1) in the microcomputer, and the judgment number flag J used when judging the water level judgment number described later is set to "0". ”(See step (75)). (E). Next, it is judged by the water level setting device (17) whether or not the set water level H has been changed (see step of drawing code (76)).
That is, the set water level is changed by comparing the set water level stored in the water level setting memory (M1) when the step of the drawing code (75) is executed with the current set water level of the water level setter (17). It is determined whether or not it has been done. When it is determined that the set water level has been changed, the detected water level at that time (41) is compared with the changed set water level H (see step of reference numeral (87) in the drawing). If the former detected water level is equal to or lower than the latter set water level H, the replenishment operation below the reference numeral (84) is performed. When the former detected water level is higher than the latter set water level H after change, the drawing code (75) is used to judge the bath temperature again (see step of drawing code (73)) and the necessity of replenishing water thereafter. Perform the following steps.

【００１６】このことから、浴槽(2）への補水動作の要
否判断が完了する前であっても、水位設定器(17)で設定
水位が変更された場合は速やかに該変更後の設定水位に
基づく補水動作が行われる。他方、水位設定器(17)でセ
ットした設定水位に変更が無いと判断される場合には、
水位センサ(41)の検知水位を水位メモリ(M2)に格納する
（図面符号(77)のステップ参照）。From this fact, even before the judgment of the necessity of the water supply operation to the bathtub (2) is completed, if the set water level is changed by the water level setter (17), the setting after the change is promptly made. Water replenishment operation based on the water level is performed. On the other hand, if it is determined that the set water level set by the water level setter (17) has not changed,
The detected water level of the water level sensor (41) is stored in the water level memory (M2) (see step of drawing code (77)).

【００１７】尚、この実施例では、水位設定器(17)で設
定水位が変更されたか否かを判断する上記図面符号(76)
のステップを実行するマイコン内の機能部が既述技術的
手段の項に記載の水位変更検知手段(44)に対応する。
又、上記図面符号(76)のステップで設定水位の変更があ
ったことが判断されたときは水位センサ(41)の検知水位
と変更後の設定水位Ｈとの比較を行なう図面符号(87)の
ステップを実行するマイコン内の機能部が既述技術的手
段の項に記載の水位比較手段(45)に対応する。 （カ）．次に１秒間の時間待ちを行い（図面符号(78)の
ステップ参照）、その後、水位メモリ(M2)に記憶させた
水位とその後１秒間が経過した現在水位（現在の水位セ
ンサ(41)の検知水位）の差、即ち、変動水位ΔＭを演算
する（図面符号(79)のステップ参照）。すると、該変動
水位ΔＭは浴槽(2）内の水面の波打ちに追随して微妙に
変動することとなる。即ち、上記水面の波打ちによって
水位センサ(41)が検知する浴槽内水位の信頼性が低下す
るのである。そこで、上記変動水位ΔＭの絶対値が微小
な値（この実施例では５mm未満）に納まっているか否か
を判断し（図面符号(80)のステップ参照）、該変動水位
ΔＭが小さく水位センサ(41)の検知する浴槽内水位の信
頼性が高いと判断されるときは、その時点に於ける水位
センサ(41)の検知水位と水位設定メモリ(M1)に記憶させ
た設定水位Ｈを比較する（図面符号(81)のステップ参
照）。そして、水位センサ(41)の検知水位が設定水位Ｈ
よりも低い場合には、判定回数フラグＪの値を「１」だ
け増加させ（図面符号(82)のステップ参照）た後に、該
判定回数フラグＪが「２０」になったか否かを判断する
（図面符号(83)のステップ参照）。即ち、変動水位ΔＭ
の値が小さくて浴槽(2）の水面の波打ちがあまり無いと
判断され然も水位センサ(41)の検知水位が設定水位Ｈよ
り低い状態が２０回（上記判定回数フラグＪの値が２０
になるまで）確認されるまで、この監視動作を繰返すの
である。そして、この状態が２０回確認されると、次の
（キ）に記載する図面符号(84)以下の補水動作が実行さ
れる。In this embodiment, the reference numeral (76) is used for determining whether or not the set water level is changed by the water level setting device (17).
The functional unit in the microcomputer that executes the step (1) corresponds to the water level change detecting means (44) described in the above-mentioned technical means section.
Further, when it is determined in the step of the drawing code (76) that the set water level is changed, the detected water level of the water level sensor (41) is compared with the changed set water level H (87). The functional unit in the microcomputer that executes the step (1) corresponds to the water level comparison means (45) described in the section of the technical means. (F). Next, wait for 1 second (see step of drawing code (78)), and then, the water level stored in the water level memory (M2) and the current water level (current water level sensor (41) of 1 second after that) The difference between the detected water levels), that is, the fluctuating water level ΔM is calculated (see step (79) in the figure). Then, the fluctuating water level ΔM slightly changes following the undulation of the water surface in the bathtub (2). That is, the undulation of the water surface lowers the reliability of the water level in the bathtub detected by the water level sensor (41). Therefore, it is judged whether or not the absolute value of the fluctuation water level ΔM is within a very small value (less than 5 mm in this embodiment) (see step (80) in the drawing), and the fluctuation water level ΔM is small and the water level sensor ( When it is judged that the water level in the bathtub detected by (41) is high, compare the detected water level of the water level sensor (41) at that time with the set water level H stored in the water level setting memory (M1). (See step in drawing number (81)). The water level detected by the water level sensor (41) is the set water level H.
If it is lower than the above, the value of the judgment count flag J is increased by "1" (see the step of drawing code (82)), and then it is judged whether or not the judgment count flag J has become "20". (See step in drawing code (83)). That is, the fluctuation water level ΔM
It is judged that the water level of the water level sensor (41) is lower than the set water level H for 20 times (when the value of the judgment count flag J is 20
This monitoring operation is repeated until it is confirmed. Then, when this state is confirmed 20 times, the rehydration operation below the drawing symbol (84) described in (K) is executed.

【００１８】他方、変動水位ΔＭが微小範囲に納まって
いるか否かを判断する図面符号(80)のステップを実行し
た際に、該変動水位ΔＭが大きく浴槽(2）内の水面の波
打ちが激しいと考えられる場合には、水位センサ(41)が
検知する浴槽内水位の信頼性が極めて低いと判断する。
そして、かかる場合には判定回数フラグＪを「０」にセ
ットし直す等の図面符号(75)のステップに制御動作が戻
され、再び水位判定動作を実行する。又、図面符号(81)
のステップで水位センサ(41)の検知水位が設定水位Ｈ以
上で浴槽(2）への補水動作が不要と判断される場合も、
上記と同様に図面符号(75)のステップに制御動作が戻さ
れる。On the other hand, when the step of the drawing symbol (80) for judging whether or not the fluctuation water level ΔM is within the minute range is executed, the fluctuation water level ΔM is large and the water surface in the bathtub (2) is severely undulated. In such a case, it is determined that the reliability of the water level in the bathtub detected by the water level sensor (41) is extremely low.
Then, in such a case, the control operation is returned to the step of the reference numeral (75) such as resetting the determination count flag J to "0", and the water level determination operation is executed again. Also, reference numeral (81)
If the water level detected by the water level sensor (41) is above the set water level H and it is determined that the refilling operation to the bathtub (2) is unnecessary in the step of
Similar to the above, the control operation is returned to the step of the drawing code (75).

【００１９】そして、上記実施例のものでは、図面符号
(78)のステップで１秒間の時間待ちを行うことから、判
定回数フラグＪが「２０」回に達するまでに約２０秒の
監視時間が経過することとなる。尚、この実施例では図
面符号(75)，(77)〜(83)のステップを実行するマイコン
内の機能部が既述技術的手段の項に記載の補水判定手段
(43)に対応する。 （キ）．次に、上記判定回数フラグＪの値が２０回に達
して補水動作の要否確認が２０回繰返されたことが分る
と、浴槽(2）への補水動作が開始する。即ち、切替弁(2
5)を切替えて給湯回路(27)→切替弁(25)→追焚き用熱交
換器(22)→水流スイッチ(F) →浴槽(2）と繋がる回路を
開くのである。又、これにより、該回路とは逆の回路、
即ち、給湯回路(27)→切替弁(25)→水位センサ(41)→浴
槽(2）と繋がる回路を遮断し、これにより、水位センサ
(41)が浴槽内水位を検知できる状態にする（図面符号(8
4)のステップ参照）。 （ク）．次に湯張り弁(28)を開けると共に給湯用ガスバ
ーナ(24)を燃焼させて浴槽(2）への補水動作を開始し
（図面符号(85)のステップ参照）、水位センサ(41)が検
知する浴槽内水位が水位設定器(17)の設定水位まで上昇
すると、湯張り弁(28)を閉じて浴槽(2）への補水動作を
終了させる（図面符号(86)のステップ参照）。以後、制
御動作は、浴槽内温度を判断する図面符号(73)のステッ
プに戻される。Further, in the above embodiment, the reference numeral
Since the waiting time of 1 second is performed in the step (78), the monitoring time of about 20 seconds elapses until the judgment count flag J reaches "20" times. In this embodiment, the functional unit in the microcomputer that executes the steps (75), (77) to (83) in FIG.
Corresponds to (43). (Ki). Next, when it is found that the value of the judgment number flag J reaches 20 times and the necessity confirmation of the water supply operation is repeated 20 times, the water supply operation to the bathtub (2) is started. That is, the switching valve (2
5) is switched to open the circuit connected to the hot water supply circuit (27) → switching valve (25) → heat exchanger for reheating (22) → water flow switch (F) → bathtub (2). Also, by this, the circuit opposite to the circuit,
That is, the circuit connected to the hot water supply circuit (27) → the switching valve (25) → the water level sensor (41) → the bathtub (2) is shut off, whereby the water level sensor
(41) put it in a state where it can detect the water level in the bathtub
See step 4)). (H). Next, the water filling valve (28) is opened and the hot water gas burner (24) is burned to start the water refilling operation for the bathtub (2) (see the step in the drawing code (85)), and the water level sensor (41) detects it. When the water level inside the bathtub rises up to the set water level of the water level setting device (17), the water filling valve (28) is closed to end the water refilling operation for the bathtub (2) (see step of reference numeral (86)). After that, the control operation is returned to the step of the reference numeral (73) for determining the bath temperature.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明実施例の風呂装置の概略図FIG. 1 is a schematic view of a bath device according to an embodiment of the present invention.

【図２】本発明実施例の風呂装置の制御動作の説明図FIG. 2 is an explanatory diagram of a control operation of the bath device according to the embodiment of the present invention.

【図３】従来例の説明図FIG. 3 is an explanatory diagram of a conventional example.

【符号の説明】[Explanation of symbols]

(2）・・・浴槽 (3）・・・制御装置 (17)・・・水位設定器 (41)・・・水位センサ (43)・・・補水判定手段 (44)・・・水位変更検知手段 (45)・・・水位比較手段 (2) ・ ・ ・ Bathtub (3) ・ ・ ・ Control device (17) ・ ・ ・ Water level setter (41) ・ ・ ・ Water level sensor (43) ・ ・ ・ Replenishment judgment means (44) ・ ・ ・ Water level change detection Means (45) ・ ・ ・ Water level comparison means

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 浴槽内水位を検知する水位センサ(41)の
出力を一定時間だけ監視して該監視結果と水位設定器(1
7)の設定水位によって浴槽(2）への補水の要否を判断す
る補水判定手段(43)を設け、上記浴槽(2）への補水を要
求する前記補水判定手段(43)からの出力信号に基づいて
前記浴槽(2）への補水動作を行うようにした風呂装置に
おいて、水位設定器(17)で設定水位が変更されたか否か
を判断して水位変更された場合には水位変更信号を出す
水位変更検知手段(44)と、該水位変更検知手段(44)から
水位変更信号が発生したときには補水判定手段(43)によ
る判定を待つことなく変更後の設定水位とその時点に於
ける水位センサ(41)の検知水位を比較する水位比較手段
(45)を設け、該水位比較手段(45)の出力に基づいて浴槽
への補水動作を行なうようにした風呂装置。1. The output of a water level sensor (41) for detecting the water level in a bathtub is monitored for a certain period of time, and the monitoring result and the water level setting device (1)
An output signal from the replenishment water determination means (43) that requests replenishment water to the bathtub (2) by providing replenishment water determination means (43) that determines whether or not replenishment water to the bathtub (2) is required according to the set water level of 7). In the bath device adapted to perform the water refilling operation to the bathtub (2) based on the above, it is judged whether the set water level has been changed by the water level setter (17) and if the water level is changed, the water level change signal The water level change detection means (44) for outputting the water level change detection means (44), and when the water level change signal is generated from the water level change detection means (44), the set water level after the change and at that time without waiting for the judgment by the water replenishment judgment means (43) Water level comparison means for comparing the water levels detected by the water level sensor (41)
A bath device provided with (45) and performing a water replenishing operation for the bath based on the output of the water level comparing means (45).