JP3369486B2

JP3369486B2 - Automatic hot water bath equipment

Info

Publication number: JP3369486B2
Application number: JP27813998A
Authority: JP
Inventors: 幸雄中田; 秀之佐野; 直樹影山; 州典橋本; 照之望月
Original assignee: Takagi Industrial Co Ltd
Current assignee: Takagi Industrial Co Ltd
Priority date: 1990-02-21
Filing date: 1998-09-30
Publication date: 2003-01-20
Anticipated expiration: 2018-01-20
Also published as: JPH11153353A

Description

Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、浴槽に接続された
循環路を通して注湯を行う自動給湯風呂装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic hot water supply bath apparatus for pouring hot water through a circulation path connected to a bathtub.

【０００２】[0002]

【従来の技術】従来、給湯及び追焚を行う自動給湯風呂
装置が使用されている。このような風呂装置において
は、設定水位まで短時間で到達させることと、設定水位
に到達させる正確な水位制御が要求される。2. Description of the Related Art Conventionally, an automatic hot water supply bath device for supplying hot water and reheating is used. In such a bath device, it is required to reach the set water level in a short time and to accurately control the water level to reach the set water level.

【０００３】[0003]

【発明が解決しようとする課題】ところで、この種の自
動給湯風呂装置には、浴槽に注湯するため、給湯用熱交
換器が用いられているが、この給湯用熱交換器で加熱さ
れた湯水は浴槽に接続された往き管及び戻り管の一方、
即ち、往き管を通して浴槽に注湯され、戻り管は注湯時
に使用していない。これは、戻り管に浴槽の水位を圧力
によって検知する手段が設けられているため、注湯中、
浴槽内の湯水の水位変化が検出できないことを防止する
ためである。By the way, in this kind of automatic hot-water supply bath device, a hot-water supply heat exchanger is used for pouring hot water into the bathtub. Hot water is one of the forward and return pipes connected to the bathtub,
That is, the return pipe is poured into the bathtub through the going pipe, and the return pipe is not used during pouring. This is because the return pipe is provided with means for detecting the water level in the bathtub by pressure,
This is to prevent the change in the water level in the bathtub from being undetectable.

【０００４】ところが、往き管だけを用いて浴槽への注
湯量を増大させると、高い圧力が必要となる。そのた
め、往き管には高耐圧で、断面積の大きなものを採用す
る必要がある。また、多量の湯水を通流させた場合に
は、往き管の内面が水流により大きな摩擦を受け、往き
管の内面の溶解或いは破壊現象と共に腐食の発生、即
ち、磨耗腐食といわれる潰食を発生させる。また、水道
直結型では、水道の圧力を利用できる利点があるが、大
気開放型タンクを使用した場合には、循環ポンプに大容
量のものを使用する必要がある。However, if the amount of molten metal poured into the bathtub is increased by using only the outflow pipe, a high pressure is required. Therefore, it is necessary to adopt a high withstand voltage and a large cross-sectional area for the outflow pipe. Also, when a large amount of hot water is passed, the inner surface of the outflow pipe is subjected to a large amount of friction due to the water flow, and the inner surface of the outflow pipe is melted or destroyed and corrosion occurs, that is, erosion called abrasion corrosion occurs. Let Further, the direct connection type of water supply has an advantage of being able to use the pressure of the water supply, but when the atmosphere open type tank is used, it is necessary to use a large capacity circulating pump.

【０００５】また、迅速な設定水位への到達は、正確な
水位制御が前提である。Accurate water level control is a prerequisite for promptly reaching the set water level.

【０００６】そこで、本発明は、設定水位に正確に到達
させることができる自動給湯風呂装置を提供することを
目的とする。[0006] Therefore, an object of the present invention is to provide an automatic hot water supply bath apparatus which can accurately reach the set water level.

【０００７】また、本発明は、設定水位への到達時間を
短縮した自動給湯風呂装置を提供することを目的とす
る。Another object of the present invention is to provide an automatic hot-water supply bath device which shortens the time required to reach the set water level.

【０００８】[0008]

【課題を解決するための手段】本発明の自動給湯風呂装
置は、浴槽（５）の循環口（湯循環口２８）を水没させ
た後の所定水位を検出し、その検出水位を第１の注湯量
（Ｑ₁）、この第１の注湯量から設定水位までの注湯量
を第２の注湯量（Ｑ₂）とし、循環口（湯循環口２８）
を越える水位を検出したときには設定水位まで給湯し、
循環口を下回る水位の場合には、第１の注湯量及び第２
の注湯量により、設定水位に正確に到達させる。また、
本発明の自動給湯風呂装置は、浴槽（５）の循環口（湯
循環口２８）に接続された循環路（湯循環路４）が複数
の管路（戻り管２６、往き管２７）で構成されることを
利用し、循環路を成す管路の一部又は全部を選択的に給
湯に利用して浴槽への注湯量の増大を図っている。The automatic hot-water supply bath apparatus according to the present invention detects a predetermined water level after the circulation port (hot water circulation port 28) of the bathtub (5) is submerged, and the detected water level is set to the first level. The pouring amount (Q ₁ ), the pouring amount from the first pouring amount to the set water level is the second pouring amount (Q ₂ ), and the circulation port (the hot water circulation port 28)
When a water level exceeding the limit is detected, hot water is supplied to the set water level,
When the water level is below the circulation port, the first pouring amount and the second pouring amount
Accurately reach the set water level according to the pouring amount of. Also,
In the automatic hot-water supply bath apparatus of the present invention, the circulation path (hot water circulation path 4) connected to the circulation port (hot water circulation port 28) of the bathtub (5) is composed of a plurality of pipelines (return pipe 26, forward pipe 27). By taking advantage of this, some or all of the pipelines forming the circulation path are selectively used for hot water supply to increase the amount of hot water poured into the bathtub.

【０００９】請求項１に係る本発明の自動給湯風呂装置
は、湯水循環に用いられる循環口（湯循環口２８）を備
えた浴槽（５）と、上水を加熱する第１の熱交換器（給
湯用熱交換器２）と、この第１の熱交換器に接続された
湯水供給路と、前記浴槽内の湯水を加熱する第２の熱交
換器（風呂用熱交換器３）と、この第２の熱交換器と前
記循環口との間に連結された往き管及び戻り管からなる
循環路（湯循環路４）と、前記湯水供給路に設けられて
前記浴槽への注湯量を計測する流量センサと、この循環
路に設けられて前記浴槽内の湯水を前記第２の熱交換器
に前記循環路を通じて循環させるポンプ（循環ポンプ３
０）と、前記戻り管に設けられて前記循環路に循環する
前記湯水の流水を検出する流水検出手段（循環ポンプ３
０に内蔵されている流水スイッチ）と、前記戻り管に設
けられて前記循環路を通じて前記浴槽内の水位を検出す
る水位センサ（２９）と、前記循環路と前記湯水供給路
との間に設けられて前記循環路側の湯水循環あるいは前
記湯水供給路から前記往き管、又は前記往き管と前記戻
り管の双方からの前記浴槽への注湯を選択する弁（二方
弁２０、２３、２５）と、前記浴槽への注湯量を記憶す
る記憶手段を備え、前記弁を切り換えて前記ポンプを動
作させて前記循環路への湯水循環又は前記弁を切り換え
て前記湯水供給路及び前記循環路を用いて前記浴槽への
注湯、前記流水検出手段の検出に基づく流水判断、前記
水位センサの水位検出に基づく前記記憶手段への前記注
湯量の記憶を行うとともに、前記水位センサの水位検出
に基づく注湯制御を行う制御手段（制御部３１）とを備
え、初期設定時、前記ポンプによる前記湯水循環により
前記循環路に流水が検出された場合には、前記湯水供給
路及び前記往き管を通して前記浴槽に湯水を設定水位ま
で注湯し、前記湯水循環により前記循環路に流水が検出
されなかった場合には、前記水位センサに前記循環口を
超える所定水位が検出されるまで前記湯水供給路及び前
記往き管を通して前記浴槽へ注湯し、前記循環口を超え
る前記所定水位までの注湯量を第１の注湯量、前記所定
水位から前記設定水位までの注湯量を第２の注湯量と
し、これら第１及び第２の注湯量を前記記憶手段に記憶
し、次回注湯時、前記湯水循環により前記循環路に流水
が検出されない場合には、前記記憶手段から読み出した
前記第１の注湯量だけ前記湯水供給路から前記往き管、
前記戻り管の双方を介して前記浴槽へ注湯し、この注湯
後、前記水位センサに前記循環口を超える所定水位が検
出されたとき、前記記憶手段から読み出した前記第２の
注湯量だけ前記湯水供給路から前記往き管、前記戻り管
の双方を介して前記浴槽へ注湯を行って前記設定水位に
到達させることを特徴とする。The automatic hot-water supply bath device of the present invention according to claim 1 is a bathtub (5) having a circulation port (hot water circulation port 28) used for circulating hot water, and a first heat exchanger for heating tap water. (Hot water supply heat exchanger 2), a hot water supply path connected to the first heat exchanger, a second heat exchanger (bath heat exchanger 3) for heating hot water in the bathtub, A circulation path (hot water circulation path 4) including a forward pipe and a return pipe connected between the second heat exchanger and the circulation port, and a hot water supply passage, which is provided with A flow rate sensor for measuring, and a pump (circulation pump 3 provided in the circulation path for circulating hot water in the bathtub through the circulation path to the second heat exchanger.
0) and a flowing water detecting means (circulation pump 3 which is provided in the return pipe to detect flowing water of the hot water circulating in the circulation path.
0 built-in water flow switch), a water level sensor (29) provided in the return pipe to detect the water level in the bathtub through the circulation path, and provided between the circulation path and the hot water supply path. A valve (two-way valve 20, 23, 25) for pouring hot water into the bathtub from the hot water circulation on the circulation path side or the hot water supply path from the forward pipe, or both the forward pipe and the return pipe And a storage means for storing the amount of hot water poured into the bathtub, switching the valve to operate the pump to circulate hot water to the circulation path or switch the valve to use the hot water supply path and the circulation path. Pouring into the bathtub, running water determination based on detection by the running water detection means, storing the pouring amount in the storage means based on water level detection by the water level sensor, and pouring based on water level detection by the water level sensor Hot water control Control means and a (controller 31) to perform, during the initial setting, when the water flow in the circulation path by the hot water circulation by the pump is detected, the hot water in the bathtub through the hot water supplying passage and the forward pipe Note to water to set level, when said flowing water is not detected in the circulation path by hot water circulation, the hot water supply passage and the forward pipe to a predetermined water level in excess of the circulation port to said water level sensor is detected Through the circulation port to the predetermined water level beyond the circulation port as a first pouring amount, and the pouring amount from the predetermined water level to the set water level as a second pouring amount. The second pouring amount is stored in the storage means, and when running water is not detected in the circulation path due to the hot water circulation at the next pouring time, the hot water supply is performed by the first pouring amount read from the storage means. Road Et the forward pipe,
After pouring into the bathtub through both of the return pipes, and after the pouring, when the predetermined water level exceeding the circulation port is detected by the water level sensor, only the second pouring amount read from the storage means wherein the hot water supplying passage forward pipe, said through both the return pipe by performing the pouring into the bath, it characterized the Turkey allowed to reach the set water level.

【００１０】この自動風呂給湯装置では、循環路を通し
て浴槽内の水位を検出する。先ず、ポンプを動作させた
とき、循環路に水流がある場合には、浴槽に設定水位ま
で注湯する。また、循環路に水流がない場合には、給湯
を前記循環口より高い所定水位まで注湯して水位を検出
し、その水位を第１の注湯量（Ｑ₁）、この第１の注湯
量から設定水位までの注湯量を第２の注湯量（Ｑ₂）と
する。次回注湯時に水流が検知されない場合には、前記
第１の注湯量及び前記第２の注湯量の注湯を行い、水流
が検知された場合には、検出水位から前記設定水位まで
注湯を行う。したがって、正確に設定水位までの注湯を
行うことができる。In this automatic bath water heater, the water level in the bathtub is detected through the circulation path. First, when the pump is operated, if there is a water flow in the circulation path, the bath is poured to the set water level. When there is no water flow in the circulation path, the hot water is poured to a predetermined water level higher than the circulation port to detect the water level, and the water level is determined as the first pouring amount (Q ₁ ), the first pouring amount. The pouring amount from the set to the set water level is the second pouring amount (Q ₂ ). When the water flow is not detected at the next pouring time, the first pouring amount and the second pouring amount are poured, and when the water flow is detected, pouring is performed from the detected water level to the set water level. To do. Therefore, pouring to the set water level can be performed accurately.

【００１１】請求項２に係る本発明の自動給湯風呂装置
は、湯水循環に用いられる循環口（湯循環口２８）を備
えた浴槽（５）と、上水を加熱する第１の熱交換器（給
湯用熱交換器２）と、この第１の熱交換器に接続された
湯水供給路と、前記浴槽内の湯水を加熱する第２の熱交
換器（風呂用熱交換器３）と、この第２の熱交換器と前
記循環口との間に連結された往き管及び戻り管からなる
循環路（湯循環路４）と、前記湯水供給路に設けられて
前記浴槽への注湯量を計測する流量センサと、この循環
路に設けられて前記浴槽内の湯水を前記第２の熱交換器
に前記循環路を通じて循環させるポンプ（循環ポンプ３
０）と、前記湯水供給路から分岐されて前記戻り管と前
記湯水供給路との間に形成された第１の管路（１５）
と、前記湯水供給路から分岐されて前記往き管と前記湯
水供給路との間に形成された第２の管路（１６）と、前
記戻り管に設けられて前記循環路に循環する前記湯水の
流水を検出する流水検出手段（循環ポンプ３２に内蔵さ
れている流水スイッチ）と、前記戻り管に設けられて前
記浴槽内の水位を検出する水位センサ（２９）と、前記
第１の管路に設けられて開閉する第１の弁（二方弁２
０）と、前記第２の管路に設けられて開閉する第２の弁
（二方弁２３）と、前記循環路に設けられて開閉する第
３の弁（二方弁２５）と、前記浴槽への注湯量を記憶す
る記憶手段を備え、前記第１の弁及び第２の弁を閉、前
記第３の弁を開にして前記ポンプを動作させて前記循環
路への湯水循環、又は前記第３の弁を閉、前記第１の弁
及び前記第２の弁の何れか一方又は双方を開にして前記
湯水供給路及び前記循環路による前記浴槽への注湯、前
記流水検出手段の検出に基づく流水判断、前記水位セン
サの水位検出に基づく前記記憶手段への前記注湯量の記
憶を行うとともに、前記水位センサの水位検出に基づく
注湯制御を行う制御手段（制御部３１）とを備え、初期
設定時、前記第１の弁、前記第２の弁を閉じ、前記第３
の弁を開いて前記ポンプによる前記湯水循環を行うこと
により、前記循環路に流水が検出された場合には、前記
第２の弁を開、前記第１の弁、前記第３の弁を閉じて前
記湯水供給路、前記第２の管路及び前記往き管を介して
設定水位まで注湯し、前記循環路に流水が検出されなか
った場合には、前記第２の弁を開、前記第１の弁、前記
第３の弁を閉じ、前記水位センサに前記循環口を超える
所定水位が検出されるまで前記湯水供給路、前記第２の
管路及び前記往き管を通して前記浴槽へ注湯し、前記循
環口を超える前記所定水位までの注湯量を第１の注湯
量、前記所定水位から前記設定水位までの注湯量を第２
の注湯量とし、これら第１及び第２の注湯量を前記記憶
手段に記憶し、次回注湯時、前記湯水循環により前記循
環路に流水が検出されない場合には、前記第１の弁、前
記第２の弁を開き、前記第３の弁を閉じて、前記記憶手
段から読み出した前記第１の注湯量だけ前記湯水供給
路、前記第１の管路及び前記戻り管の経路と前記湯水供
給路、前記第２の管路及び前記往き管の経路とから前記
浴槽に注湯し、この注湯後、前記水位センサに前記所定
水位が検出されたとき、前記記憶手段から読み出した前
記第２の注湯量だけ前記第１の注湯量の注湯と同様の経
路で前記浴槽に注湯して前記所定水位に到達させること
を特徴とする。The automatic hot-water supply bath apparatus of the present invention according to claim 2 is a bathtub (5) having a circulation port (hot water circulation port 28) used for circulating hot water, and a first heat exchanger for heating tap water. (Hot water supply heat exchanger 2), a hot water supply path connected to the first heat exchanger, a second heat exchanger (bath heat exchanger 3) for heating hot water in the bathtub, A circulation path (hot water circulation path 4) including a forward pipe and a return pipe connected between the second heat exchanger and the circulation port, and a hot water supply passage, which is provided with A flow rate sensor for measuring, and a pump (circulation pump 3 provided in the circulation path for circulating hot water in the bathtub through the circulation path to the second heat exchanger.
0) and a first pipe line (15) branched from the hot water supply passage and formed between the return pipe and the hot water supply passage.
A second pipe line (16) branched from the hot water supply passage and formed between the forward pipe and the hot water supply passage; and the hot water provided in the return pipe and circulated in the circulation passage. Flow detecting means (flow switch built in the circulation pump 32) for detecting the flowing water, a water level sensor (29) provided in the return pipe for detecting the water level in the bath, and the first pipeline. The first valve (two-way valve 2) provided on the
0), a second valve (two-way valve 23) provided in the second pipeline and opened / closed, a third valve (two-way valve 25) provided in the circulation path and opened / closed, A storage means for storing the amount of pouring hot water into the bathtub is provided, and the first valve and the second valve are closed, the third valve is opened, and the pump is operated to circulate hot water to the circulation path, or The third valve is closed, and one or both of the first valve and the second valve are opened to inject the hot water into the bathtub by the hot water supply passage and the circulation passage. A control means (control section 31) for performing water flow judgment based on the detection, storing the pouring amount in the storage means based on the water level detection by the water level sensor, and performing pouring control based on the water level detection by the water level sensor. In the initial setting, the first valve and the second valve are closed, and the third valve is provided.
When the flowing water is detected in the circulation path by performing the hot water circulation by the pump by opening the valve of No. 2, the second valve is opened, and the first valve and the third valve are closed. Pouring water to the set water level through the hot water supply passage, the second pipe passage, and the forward pipe, and if no running water is detected in the circulation passage, open the second valve, The first valve and the third valve are closed, and hot water is poured into the bathtub through the hot water supply passage, the second pipeline, and the forward pipeline until a predetermined water level exceeding the circulation port is detected by the water level sensor. A first pouring amount of the pouring amount up to the predetermined water level exceeding the circulation port, and a second pouring amount of the pouring amount from the predetermined water level to the set water level.
The first and second pouring amounts are stored in the storage means, and when running water is not detected in the circulation path by the hot water circulation at the next pouring time, the first valve, the The second valve is opened, the third valve is closed, and the hot water supply passage, the first pipe passage, the return pipe passage, and the hot water supply by the first pouring amount read from the storage means. The pouring water is poured into the bathtub from the channel, the second pipeline, and the path of the outflow pipe, and after the pouring, when the predetermined water level is detected by the water level sensor, the second read from the storage means. pouring amount just by pouring the bath in the same path and pouring of the first pouring amount and wherein the benzalkonium allowed to reach the predetermined water level.

【００１２】このような構成としたことにより、注湯開
始時、制御手段に必要な水位を設定する。制御手段は、
浴槽内における湯水が浴槽における循環経路からの循環
口の部位まであるか否かを確認する。浴槽内の湯水が循
環口の部位まである場合には、設定水位になるまで注湯
を行い、湯水が循環口の部位までない場合には、管路内
の空気を外部に排除した後、水位を計測する。この場
合、第１の管路が開放されることで、湯水は戻り管を介
して浴槽内に流入するので、戻り管内の空気が除去さ
れ、湯水で満たされるので、浴槽の水位は水位センサに
よって正確に検出される。With this structure, the water level required for the control means is set at the start of pouring. The control means is
Check whether the hot and cold water in the bathtub reaches the part of the circulation port from the circulation path in the bathtub. If the hot water in the bathtub reaches the circulation port, pour the water until it reaches the set water level.If the hot water does not reach the circulation port, remove the air in the pipeline to the outside and then To measure. In this case, since the hot water flows into the bathtub through the return pipe by opening the first conduit, the air in the return pipe is removed and the hot water is filled, so that the water level of the bathtub is measured by the water level sensor. Accurately detected.

【００１３】水位センサによって水位上昇値が所定の値
に達したことが検知されたとき、その時点での注湯量を
第１の注湯量Ｑ₁として記憶し、再度注湯及び注湯量の
計測を開始する。When it is detected by the water level sensor that the water level rise value has reached a predetermined value, the pouring amount at that time is stored as the first pouring amount Q ₁ , and the pouring amount and the pouring amount are measured again. Start.

【００１４】設定水位に達したことを検知したとき、制
御手段は注湯完了として注湯を停止させる。制御手段
は、その時点で測定される注湯量を第２の注湯量Ｑ₂と
して記憶手段に記憶すると共に総注湯量Ｑ（＝Ｑ₁＋Ｑ
₂）を算出し、この注湯量を設定水位に対応する値とし
て記憶する。そして、制御手段は、設定温度と現在温度
との比較に基づいて追焚運転を開始する。When it is detected that the set water level has been reached, the control means determines that pouring is completed and stops pouring. The control means stores the pouring amount measured at that time as the second pouring amount Q ₂ in the storage means, and also the total pouring amount Q (= Q ₁ + Q).
₂ ) is calculated and this pouring amount is stored as a value corresponding to the set water level. Then, the control means starts the additional heating operation based on the comparison between the set temperature and the current temperature.

【００１５】そして、再運転する際、制御手段は初回運
転の場合と同様に、浴槽内の湯水の水位の確認、管路内
の空気を外部に排出し、注湯量の計測を開始する。When restarting, the control means confirms the water level of the hot water in the bathtub, discharges the air in the pipe to the outside, and starts measuring the pouring amount, as in the first operation.

【００１６】即ち、制御手段は、記憶された第１の注湯
量に基づき注湯を行わせる。即ち、第１の管路及び第２
の管路を開放して循環経路を構成する往き管及び戻り管
を介して浴槽に注湯を行うように制御する。そして、制
御手段は、記憶された第１の注湯量を浴槽に注湯させる
と、一旦注湯を停止して水位を確認し、再び注湯を開始
して記憶された第２の注湯量Ｑ₂を浴槽に注湯し、追焚
運転に移行させる。That is, the control means causes the molten metal to be poured based on the stored first molten metal amount. That is, the first conduit and the second
The pipe is opened to control the pouring into the bathtub through the return pipe and the return pipe that constitute the circulation path. Then, when the stored first pouring amount is poured into the bathtub, the control means once stops pouring and confirms the water level, starts pouring again, and then stores the stored second pouring amount Q. Pour ₂ into the bathtub and shift to additional heating operation.

【００１７】[0017]

【発明の実施の形態】以下、本発明を図面に示した実施
形態を参照して詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the embodiments shown in the drawings.

【００１８】図１は、本発明の自動給湯風呂装置の一実
施形態を示している。１は自動給湯風呂装置の本体部を
示し、この自動給湯風呂装置１には、給湯用熱交換器
２、風呂用熱交換器３が設けられ、風呂用熱交換器３と
湯循環路４を通して浴槽５が接続されている。FIG. 1 shows an embodiment of the automatic hot-water supply bath apparatus of the present invention. Reference numeral 1 denotes a main body of the automatic hot-water supply bath device. The automatic hot-water supply bath device 1 is provided with a hot-water supply heat exchanger 2 and a bath heat exchanger 3, and through the bath heat exchanger 3 and the hot-water circulation path 4. Bathtub 5 is connected.

【００１９】給湯用熱交換器２には、上水として水導入
側６に水道管７が接続される。一方、出湯側８には湯水
供給管９を介して外部へ給湯するための給湯栓１０が接
続される。湯水供給管９には給湯側管路としての分岐管
１１が接続され、この分岐管１１には湯水の流量を検知
するための流量センサ１２、逆流防止のための逆止弁１
３、後述する強制循環手段を停止した際分岐管１１内の
圧力を調整するための真空破壊弁１４が介在している。
分岐管１１には第１の管路１５及び第２の管路１６が分
岐接続され、管路１５は風呂用熱交換器３の湯水導入側
１７に接続され、管路１６は風呂用熱交換器３の出湯側
１８に接続される。また、管路１５、管路１６には、水
量規制弁１９、第１の弁として二方弁２０、逆止弁２１
と、水量規制弁２２、第２の弁としての二方弁２３、逆
止弁２４がそれぞれ介在している。さらに、風呂用熱交
換器３の出湯側１８には、第３の弁として二方弁２５が
設けられる。In the hot water supply heat exchanger 2, a water pipe 7 is connected to the water introduction side 6 as clean water. On the other hand, a hot water tap 10 for supplying hot water to the outside is connected to the hot water outlet side 8 via a hot water supply pipe 9. A branch pipe 11 as a hot water supply side pipe is connected to the hot water supply pipe 9, and a flow sensor 12 for detecting the flow amount of hot water and a check valve 1 for preventing backflow are connected to the branch pipe 11.
3. A vacuum break valve 14 for adjusting the pressure in the branch pipe 11 when the forced circulation means described later is stopped is interposed.
A first pipe line 15 and a second pipe line 16 are branched and connected to the branch pipe 11, the pipe line 15 is connected to a hot water introducing side 17 of the bath heat exchanger 3, and the pipe line 16 is a bath heat exchange. It is connected to the hot water outlet side 18 of the vessel 3. Further, in the pipe lines 15 and 16, a water amount regulating valve 19, a two-way valve 20 as a first valve, a check valve 21 are provided.
, A water amount regulating valve 22, a two-way valve 23 as a second valve, and a check valve 24 are interposed. Further, a two-way valve 25 is provided as a third valve on the hot water outlet side 18 of the bath heat exchanger 3.

【００２０】風呂用熱交換器３の湯水導入側１７は、湯
循環路４を構成する風呂用熱交換器３に湯水を還流する
ための戻り管２６に接続され、風呂用熱交換器３の出湯
側１８は湯循環路４の浴槽５に湯水を供給するための往
き管２７に接続される。なお、これら戻り管２６、往き
管２７は、浴槽５に形成された湯水取り入れ口である湯
循環口２８を介して接続されている。The hot water introduction side 17 of the bath heat exchanger 3 is connected to a return pipe 26 for returning hot water to the bath heat exchanger 3 constituting the hot water circulation passage 4, and the hot water exchanger 3 of the bath heat exchanger 3 is connected. The hot water outlet side 18 is connected to a forward pipe 27 for supplying hot water to the bathtub 5 of the hot water circulation path 4. The return pipe 26 and the outgoing pipe 27 are connected to each other through a hot water circulation port 28 which is a hot water intake port formed in the bathtub 5.

【００２１】湯水導入側１７には浴槽５内の湯水の水位
を検知するための水位センサ２９、風呂用熱交換器３に
湯水を強制的に還流するための強制循環手段たる循環ポ
ンプ３０が設置されている。なお、循環ポンプ３０に
は、湯水が通流することによってオン状態になる流水ス
イッチ（図示せず）が内蔵されている。この自動給湯風
呂装置１には、前記した構成体との間で、検知信号を取
り込んだり動作にかかる制御指令を送出する制御部３１
が設けられる。この制御部３１には、リモコン手段３２
によって浴槽５に注湯される湯水の水位が設定されると
共に、湯水の温度が設定されるようになっている。A water level sensor 29 for detecting the water level of the hot water in the bathtub 5 and a circulation pump 30 as a forced circulation means for forcibly returning the hot water to the bath heat exchanger 3 are installed on the hot water introducing side 17. Has been done. The circulation pump 30 has a built-in running water switch (not shown) that is turned on when hot water flows. In the automatic hot-water supply bath apparatus 1, a control unit 31 that receives a detection signal and sends a control command related to the operation with the above-mentioned structure.
Is provided. The control unit 31 includes remote control means 32.
The water level of the hot water poured into the bathtub 5 is set, and the temperature of the hot water is set.

【００２２】以上の構成に基づき動作を説明する。The operation will be described based on the above configuration.

【００２３】この自動給湯風呂装置１では注湯運転を行
った後、追焚運転を行う。In the automatic hot water supply bath apparatus 1, after the pouring operation is performed, the additional heating operation is performed.

【００２４】（ＳＴＥＰ１）運転開始時、リモコン手段
３２によって、予め、水位及び浴槽５内の湯温を設定
し、これら設定情報は制御部３１に取り込まれる。制御
部３１の制御出力により、二方弁２０及び二方弁２３を
閉、二方弁２５を開として循環ポンプ３０を作動させ、
浴槽５内に湯水が湯循環口２８の位置まであるか否かを
確認する。即ち、循環ポンプ３０に内蔵されている流水
スイッチ（図示せず）が循環ポンプ３０に湯水が通流す
ることでオンしたか否かを検知し、浴槽５内の湯水が湯
循環口２８の位置まであるか否かが確認できる。(STEP 1) At the start of operation, the water level and the hot water temperature in the bathtub 5 are set in advance by the remote control means 32, and the setting information is taken into the control section 31. By the control output of the control unit 31, the two-way valve 20 and the two-way valve 23 are closed and the two-way valve 25 is opened to operate the circulation pump 30,
It is confirmed whether or not hot and cold water is in the bathtub 5 up to the position of the hot water circulation port 28. That is, it is detected whether a hot water switch (not shown) built in the circulation pump 30 is turned on by flowing hot water to the circulation pump 30, and the hot water in the bathtub 5 is located at the position of the hot water circulation port 28. You can check whether there is up to.

【００２５】（ＳＴＥＰ２）また、循環ポンプ３０の流
水スイッチからオフを示す信号が制御部３１に入力され
ると、制御部３１は湯水が浴槽５内の湯循環口２８の位
置までないと判断し、その判断に基づく制御出力が得ら
れる。その結果、二方弁２０を開とし、二方弁２３及び
二方弁２５を閉として、湯水を導入して管路内の空気を
外部に排出し、分岐管１１に配設された流量センサ１２
によって湯水の流量の計測が開始される。この場合、管
路１５が開放されることで、湯水は戻り管２６を介して
浴槽５内に流入する。これによって、戻り管２６内の空
気が排除されると共に湯水で満たされ、浴槽５の水位を
水位センサ２９によって正確に検知できるようになる。
また、水位センサ２９から制御部３１にエアパージ開始
時における初期圧力にかかる信号が入力されると、制御
部３１の記憶手段には、この初期圧力にかかる信号が水
位の測定初期値として記憶される。(STEP 2) Further, when a signal indicating OFF is input from the water flow switch of the circulation pump 30 to the control unit 31, the control unit 31 determines that the hot water does not reach the position of the hot water circulation port 28 in the bathtub 5. , A control output based on the judgment is obtained. As a result, the two-way valve 20 is opened, the two-way valve 23 and the two-way valve 25 are closed, hot water is introduced to discharge the air in the pipeline to the outside, and the flow rate sensor arranged in the branch pipe 11 is discharged. 12
Measurement of the flow rate of hot water is started by. In this case, the hot water flows into the bathtub 5 through the return pipe 26 by opening the pipe 15. As a result, the air in the return pipe 26 is removed and filled with hot water, so that the water level of the bathtub 5 can be accurately detected by the water level sensor 29.
Further, when a signal applied to the initial pressure at the start of air purging is input from the water level sensor 29 to the control unit 31, the storage unit of the control unit 31 stores the signal applied to the initial pressure as an initial value for measuring the water level. .

【００２６】（ＳＴＥＰ３）この初期値の記憶の後、制
御部３１の制御出力により、二方弁２０を閉、二方弁２
３を開、二方弁２５を閉として、浴槽５に注湯が行われ
る。(STEP 3) After the storage of the initial value, the two-way valve 20 is closed by the control output of the control unit 31.
3 is opened and the two-way valve 25 is closed, so that the bath 5 is poured.

【００２７】そして、測定初期値からの変化値、すなわ
ち、水位の上昇値が５cmにかかる検知信号が水位センサ
２９から制御部３１に出力されたとき、制御部３１は二
方弁２３を閉として注湯を停止する。When a change value from the initial measurement value, that is, a detection signal indicating that the rising value of the water level is 5 cm is output from the water level sensor 29 to the control unit 31, the control unit 31 closes the two-way valve 23. Stop pouring.

【００２８】（ＳＴＥＰ４）この際、制御部３１の制御出力により、二方弁２５を開
として循環ポンプ３０を作動し、循環ポンプ３０に内蔵
されている流水スイッチ（図示せず）がオンしたこと
で、水位が湯循環口２８より上の所定水位（５cm）に達
したと判断し、その時点までの注湯量が、流量センサ１
２からの第１の注湯量Ｑ₁として制御部３１の記憶手段
に記憶される。すなわち、水位センサ２９が測定初期値
からの変化値として水位の上昇値５cmの検出と、循環ポ
ンプ３０を用いた湯水循環による流水スイッチとから循
環する湯水を確認し、それを所定水位（５cm）に達した
と判断している。 (STEP 4) At this time, the control output of the control unit 31 opens the two-way valve 25 to operate the circulation pump 30, and the flowing water switch (not shown) built in the circulation pump 30 is turned on. Then, it is judged that the water level has reached a predetermined water level (5 cm) above the hot water circulation port 28, and the pouring amount up to that point is determined by the flow sensor 1.
The first pouring amount Q ₁ from 2 is stored in the storage unit of the control unit 31. That is, the water level sensor 29 measures the initial value.
As the change value from the
Circulation from a running water switch using hot water circulation using pump 30
Confirm the hot and cold water to reach the predetermined water level (5 cm)
I have decided.

【００２９】（ＳＴＥＰ５）次に、制御部３１の制御出
力により、二方弁２３を開、二方弁２５を閉として再度
注湯が行われるとともに、制御部３１は流量センサ１２
からの信号を取り込み、注湯量の計測が開始される。設
定水位に達したことが水位センサ２９に検知されると、
注湯完了となる。即ち、水位センサ２９の検知出力に基
づく制御部３１の制御出力により、二方弁２３を閉にし
て注湯を停止する。(STEP 5) Next, by the control output of the control unit 31, the two-way valve 23 is opened and the two-way valve 25 is closed to perform pouring again, and the control unit 31 causes the flow rate sensor 12 to operate.
The signal from is taken in and the measurement of the pouring amount is started. When the water level sensor 29 detects that the set water level has been reached,
The pouring is completed. That is, the two-way valve 23 is closed and pouring is stopped by the control output of the control unit 31 based on the detection output of the water level sensor 29.

【００３０】制御部３１には、第１の注湯量Ｑ₁の注湯
以後に注湯された注湯量が、流量センサ１２からの信号
を積算して第２の注湯量Ｑ₂として取り込まれ、記憶手
段に記憶される。同時に、制御部３１において、総注湯
量Ｑ（＝Ｑ₁＋Ｑ₂）が求められ、この総注湯量Ｑが設
定水位に対応する値として記憶される。そして、制御部
３１は、現在温度と設定温度との比較に基づき、設定温
度に浴槽５内の湯水温度が到達するように追焚運転動作
の制御を行う。The pouring amount poured after the pouring of the first pouring amount Q ₁ is taken into the control section 31 as the second pouring amount Q ₂ by integrating the signal from the flow rate sensor 12. It is stored in the storage means. At the same time, the control unit 31 obtains the total pouring amount Q (= Q ₁ + Q ₂ ) and stores the total pouring amount Q as a value corresponding to the set water level. Then, the control unit 31 controls the additional heating operation based on the comparison between the current temperature and the set temperature so that the hot and cold water temperature in the bathtub 5 reaches the set temperature.

【００３１】（ＳＴＥＰ６）次に、再度運転する際の動
作を説明する。制御部３１はＳＴＥＰ１〜３の運転手順
にて浴槽５内の湯水の水位の確認、空気の排出を行い、
注湯量の計測を開始する。循環ポンプ３０の流水スイッ
チからオン信号が制御部３１に入力されると、制御部３
１は浴槽５内の湯水が湯循環口２８の位置まであると判
断し、二方弁２３を開とし、二方弁２５を閉として、設
定水位になるまで注湯を行う。(STEP 6) Next, the operation for re-driving will be described. The control unit 31 confirms the water level of the hot water in the bathtub 5 and discharges air in the operating procedure of STEP 1 to 3,
Start measuring the pouring amount. When an ON signal is input from the water flow switch of the circulation pump 30 to the control unit 31, the control unit 3
In No. 1, it is determined that the hot water in the bathtub 5 is at the position of the hot water circulation port 28, the two-way valve 23 is opened, the two-way valve 25 is closed, and pouring is performed until the set water level is reached.

【００３２】先ず、制御部３１の制御出力により、記憶
された第１の注湯量Ｑ₁の注湯を行う。この場合、制御
部３１の制御出力により、管路１５及び管路１６が開放
され、すなわち、二方弁２０及び二方弁２３を開とし、
二方弁２５を閉として、湯循環路４を構成する往き管２
７及び戻り管２６を介して浴槽５に注湯を行う。First, by the control output of the control unit 31, the stored first pouring amount Q ₁ is poured. In this case, the conduit 15 and the conduit 16 are opened by the control output of the controller 31, that is, the two-way valve 20 and the two-way valve 23 are opened,
The outflow pipe 2 which forms the hot water circulation path 4 by closing the two-way valve 25.
7 is poured into the bathtub 5 through the return pipe 26.

【００３３】（ＳＴＥＰ７）そして、第１の注湯量Ｑ₁
の注湯を行い、一旦注湯及び流量センサ１２による注湯
量の計測を停止して、水位上昇値が湯循環口２８から５
cm上であることが水位センサ２９の検出出力により確認
されると、再び注湯及び流量センサ１２による注湯量の
計測が開始され、記憶されている第２の注湯量Ｑ₂によ
る注湯が行われる。(STEP 7) Then, the first pouring amount Q ₁
Is temporarily stopped, and once the pouring and the measurement of the pouring amount by the flow rate sensor 12 are stopped, the water level rise value is 5
When it is confirmed to be on cm by the detection output of the water level sensor 29, the pouring and the measurement of the pouring amount by the flow rate sensor 12 are started again, and the pouring by the stored second pouring amount Q ₂ is performed. Be seen.

【００３４】第２の注湯量Ｑ₂を注湯後、水位センサ２
９の検出出力により、設定水位に達したことが確認され
た後、制御部３１は、追焚運転制御を行う。After pouring the _second pouring amount Q ₂ , the water level sensor 2
After the detection output of 9 confirms that the set water level has been reached, the control unit 31 performs the additional heating operation control.

【００３５】このように、設定水位になるまで総注湯量
Ｑ（＝Ｑ₁＋Ｑ₂）を２回に分けて、水位を確認しつつ
注湯を行うようにしているので、浴槽５内の残り湯に影
響されず、溢水することなく、設定水位にすることが可
能となる。In this way, the total pouring amount Q (= Q ₁ + Q ₂ ) is divided into two times until the set water level is reached, and pouring is performed while confirming the water level. It is possible to reach the set water level without being affected by the hot water and without overflowing.

【００３６】[0036]

【発明の効果】以上説明したように、本発明によれば、
次の効果が得られる。ａ．初期設定時、浴槽の循環口が水没する水位より高い
所定水位を第１の注湯量、この第１の注湯量から設定水
位までの注湯量を第２の注湯量を設定して記憶し、実際
の注湯時、循環口の水位より高い水位を検出したときに
は設定水位まで注湯し、循環口を下回る水位の場合に
は、第１の注湯量及び第２の注湯量により設定水位に注
湯し、水位センサに圧力センサを用いて水位を検出する
ことで、正確な水位制御ができるとともに、溢水を防止
できる。ｂ．浴槽への注湯を浴槽内の水量に従って行うことがで
きるとともに、循環路を構成する往き管及び戻り管の双
方を注湯に使用するので、注湯時間を短縮できる。ｃ．循環路を構成する往き管及び戻り管の双方を用いて
注湯するので、管路の通流抵抗を低減していわゆる潰食
現象の抑制とともに、その注湯量の増加で大きな給湯能
力を持つ給湯用熱交換器を用いることができ、給湯性能
を高めることができる。ｄ．水圧の低い給水源からの給水を用いても注湯量を減
ずることなく注湯できるとともに、初期設定時に記憶し
た第１及び第２の注湯量を以て設定水位に水位確認を行
いながら注湯でき、浴槽に残り湯があっても溢水させる
ことなく、設定水位まで迅速に注湯することができる。 As described above, according to the present invention,
The following effects are obtained. a. At the time of initial setting, a predetermined water level higher than the water level at which the circulation port of the bathtub is submerged is set as the first pouring amount, and the pouring amount from the first pouring amount to the set water level is set as the second pouring amount and stored.
During pouring, when it detects the water level higher than the water level in the circulation port and pouring to the set water level, when the water level below the circulating port, note the set water level by the first pouring amount and the second pouring amount
By detecting the water level using the pressure sensor as the water level sensor and the water level sensor , accurate water level control can be performed and overflow can be prevented. b. -Out <br/> pouring into the bathtub in be carried out in accordance with the amount of water in the bathtub Rutotomoni, because it uses both the forward pipe and the return pipe constituting the circulation path in pouring it can shorten the pouring time. c. Using both the forward and return pipes that make up the circulation path
Since pouring is performed , the flow resistance of the pipeline is reduced to suppress the so-called erosion phenomenon , and the increase in the pouring amount provides a large hot water supply capability.
A hot water heat exchanger having power can be used, and hot water supply performance can be improved. d. It is possible pouring without reduction <br/> cheat that even pouring amount with a feed water from a lower water pressure water source, stored during initialization
Check the water level at the set water level using the first and second pouring amounts
You can pour hot water while you are in the bath, and even if there is remaining hot water in the bathtub, it will overflow
Without this, you can quickly pour up to the set water level.

[Brief description of drawings]

【図１】本発明の自動給湯風呂装置の一実施形態を示す
系統図である。FIG. 1 is a system diagram showing an embodiment of an automatic hot-water supply bath device of the present invention.

[Explanation of symbols]

１自動給湯風呂装置３風呂用熱交換器（熱交換器）４湯循環路（循環路）５浴槽１５第１の管路１６第２の管路２０二方弁（第１の弁）２３二方弁（第２の弁）２５二方弁（第３の弁）２６戻り管（管路）２７往き管（管路）２８湯循環口（循環口）２９水位センサ３０循環ポンプ３１制御部（制御手段） 1 Automatic hot water bath equipment 3 Bath heat exchanger (heat exchanger) 4 hot water circulation path (circulation path) 5 bathtubs 15 First pipeline 16 Second pipeline 20 two-way valve (first valve) 23 Two-way valve (second valve) 25 two-way valve (third valve) 26 Return pipe (pipe) 27 Outward pipe (pipe) 28 Hot water circulation port (circulation port) 29 Water level sensor 30 circulation pump 31 control unit (control means)

───────────────────────────────────────────────────── フロントページの続き (72)発明者橋本州典静岡県富士市西柏原新田201番地高木産業株式会社内 (72)発明者望月照之静岡県富士市西柏原新田201番地高木産業株式会社内 (56)参考文献特開平１−225859（ＪＰ，Ａ) 特開平１−98853（ＪＰ，Ａ) 特開昭63−259348（ＪＰ，Ａ) (58)調査した分野(Int.Cl.⁷，ＤＢ名) F24H 1/00 602 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazunori Hashimoto 201 Nishi-Kashiwabara Nitta, Fuji City, Shizuoka Prefecture Takagi Sangyo Co., Ltd. (72) Teruyuki Mochizuki 201 Nishi-Kashiwabara Shinden, Fuji City, Shizuoka Prefecture Takagi Sangyo Co., Ltd. In-company (56) Reference JP-A-1-225859 (JP, A) JP-A-1-98853 (JP, A) JP-A-63-259348 (JP, A) (58) Fields investigated (Int.Cl) . ^7, DB name) F24H 1/00 602

Claims

(57) [Claims]

1. A bathtub having a circulation port used for circulating hot water, a first heat exchanger for heating tap water, a hot and cold water supply passage connected to the first heat exchanger, and the inside of the bathtub. A second heat exchanger for heating the hot and cold water, a circulation path composed of a forward pipe and a return pipe connected between the second heat exchanger and the circulation port, and a hot water supply passage. A flow rate sensor that measures the amount of hot water poured into the bathtub, a pump that is provided in this circulation path to circulate the hot water in the bathtub to the second heat exchanger through the circulation path, and a pump that is provided in the return pipe. Running water detection means for detecting running water of the hot water circulating in the circulation path, a water level sensor provided in the return pipe for detecting the water level in the bathtub through the circulation path, the circulation path and the hot water supply path Between the hot water circulation on the circulation path side or the front A valve for selecting pouring of hot water into the bathtub from the hot water supply passage or both of the hot water pipe and the return pipe, and a storage unit for storing the pouring amount of the hot water to the bathtub, and the valve is provided. Hot water circulation to the circulation path by switching and operating the pump or switching the valve, pouring into the bathtub using the hot water supply path and the circulation path, running water determination based on detection of the running water detection means, performs storage of the pouring amount to the storage unit based on the water level detection of the water level sensor, and a control means for performing pouring control based on the level detection of the water level sensor, the time of initial setting, the by the pump when the running water is detected in the circulation path by hot water circulation, the hot water in the bath through the hot water supplying passage and the forward pipe and pouring to set water level, water flow detection of the circulation path by the hot water circulation If not, pouring water into the bathtub through the hot water supply passage and the outflow pipe until a predetermined water level exceeding the circulation port is detected by the water level sensor, and pouring amount up to the predetermined water level beyond the circulation port. Is the first pouring amount, the pouring amount from the predetermined water level to the set water level is the second pouring amount, and these first and second pouring amounts are stored in the storage means, and at the time of the next pouring, When no running water is detected in the circulation path due to circulation, the pouring water is poured from the hot water supply path to the bathtub through both the forward pipe and the return pipe by the first pouring amount read from the storage means. , After this pouring,
When the water level sensor detects a predetermined water level exceeding the circulation port, only the second pouring amount read out from the storage means is passed from the hot water supply passage to the bathtub through both the forward pipe and the return pipe. Note automatic hot water supply bath and wherein the Turkey to reach <br/> the set water level by performing the hot water.

2. A bathtub provided with a circulation port used for hot water circulation, a first heat exchanger for heating tap water, a hot and cold water supply passage connected to the first heat exchanger, and the inside of the bathtub. A second heat exchanger for heating the hot and cold water, a circulation path composed of a forward pipe and a return pipe connected between the second heat exchanger and the circulation port, and a hot water supply passage. A flow rate sensor for measuring the amount of hot water poured into the bathtub, a pump provided in this circulation path for circulating the hot water in the bathtub to the second heat exchanger through the circulation path, and a pump branched from the hot water supply path. A first pipe formed between the return pipe and the hot water supply passage, and a second pipe branched from the hot water supply passage and formed between the forward pipe and the hot water supply passage A passage and a return pipe provided in the return pipe to detect the flowing hot water circulating in the circulation passage. Flowing water detection means, a water level sensor provided in the return pipe to detect the water level in the bath, a first valve provided in the first pipe line to open and close, and a second pipe line provided in the second pipe line A second valve that is opened and closed, a third valve that is provided in the circulation path and that is opened and closed, and a storage unit that stores the amount of pouring water into the bathtub, and the first valve and the second valve are provided. Closed, the third valve is opened to operate the pump to circulate hot water to the circulation path, or the third valve is closed, one of the first valve and the second valve, or Both are opened and pouring of water into the bathtub by the hot water supply passage and the circulation passage, judgment of flowing water based on detection of the flowing water detection means, storage of the pouring amount in the storage means based on water level detection of the water level sensor And a control means for performing pouring control based on the water level detection of the water level sensor. When the flowing water is detected in the circulation path by performing the hot water circulation by the pump by closing the first valve and the second valve and opening the third valve at the initial setting Has
The second valve is opened, the first valve and the third valve are closed, and the hot water is supplied to the set water level through the hot water supply passage, the second pipe passage, and the forward pipe, and the circulation passage is formed. If no running water is detected, the second valve is opened, the first valve and the third valve are closed, and the water level sensor detects the predetermined water level exceeding the circulation port. The pouring water is poured into the bathtub through the hot water supply passage, the second pipe and the outflow pipe, and the pouring amount up to the predetermined water level exceeding the circulation port is the first pouring amount, from the predetermined water level to the set water level. The pouring amount is defined as a second pouring amount, the first and second pouring amounts are stored in the storage means, and when running water is not detected in the circulation path by the hot water circulation at the next pouring time, 1 valve, the second valve is opened, the third valve is closed, and read from the storage means. Only the first pouring amount is poured into the bath from the hot water supply passage, the first pipe passage and the return pipe passage, and the hot water supply passage, the second pipe passage and the forward pipe passage. However, after this pouring, when the predetermined water level is detected by the water level sensor, the second pouring amount read from the storage means is added to the bathtub in the same route as the pouring of the first pouring amount. poured to the automatic hot water supply bath and wherein the benzalkonium allowed to reach the predetermined water level.