JPH0733927B2 - Hot water heater with additional heating function - Google Patents

Description

【発明の詳細な説明】 産業上の利用分野 本発明は浴槽へ自動給湯する追焚機能付給湯機に関する
ものである。Description: TECHNICAL FIELD The present invention relates to a water heater with a reheating function for automatically supplying hot water to a bathtub.

従来の技術 近年、追焚機能付給湯機は給湯機と浴槽とを接続し、ポ
ンプで温水（浴槽水）を循環する追焚機を組合せた複合
商品が開発されており、さらに、浴槽へ自動給湯する機
能を追加したものなど、風呂装置の自動沸きあげ化が進
んでいる。2. Description of the Related Art In recent years, a water heater with a reheating function has been developed that combines a water heater and a bathtub and combines a reheating machine that circulates hot water (bath water) with a pump. Bath equipment, such as the one with the function to supply hot water, is being automatically boiled.

以下図面を参照しながら、従来の追焚機能付給湯機につ
いて説明する。第３図にその従来例の構成概略図を示
す。A conventional water heater with a reheating function will be described below with reference to the drawings. FIG. 3 shows a schematic diagram of the configuration of the conventional example.

１は給湯用熱交換器で給水口1aおよび1bに接続されてい
る。２は追焚用熱交換器で温水戻口2aおよび温水往口2b
に接続されている。温水戻口2aから追焚用熱交換器２に
至る温水通路にポンプ３を設け、そして、前記温水戻口
2aおよび温水往口2bに浴槽４を接続管５で連結して温水
循環通路を構成する。前記各々の熱交換器1,2には排気
筒６が接続され、排気ファン７によって燃焼排気ガスを
排気口８に排出するように構成する。また、燃焼用空気
を給気口９から供給できるようにケース10の一部にに形
成してある。燃料通路は、元電磁弁11から分岐して、給
湯用電磁弁12と比例制御弁13を通して給湯用バーナ14
に、そして追焚用電磁弁15を通して追焚用バーナ16に各
々接続して構成されている。A heat exchanger 1 for hot water supply is connected to the water supply ports 1a and 1b. 2 is a heat exchanger for additional heating, which is a hot water return port 2a and a hot water outlet port 2b
It is connected to the. A pump 3 is provided in a hot water passage extending from the hot water return port 2a to the additional heat exchanger 2 and the hot water return port
A bathtub 4 is connected to the hot water outlet 2b and the hot water outlet 2b by a connecting pipe 5 to form a hot water circulation passage. An exhaust pipe 6 is connected to each of the heat exchangers 1 and 2, and a combustion exhaust gas is discharged to an exhaust port 8 by an exhaust fan 7. Further, it is formed in a part of the case 10 so that the combustion air can be supplied from the air supply port 9. The fuel passage branches from the original solenoid valve 11 and passes through a hot water supply solenoid valve 12 and a proportional control valve 13 to supply a hot water supply burner 14
In addition, it is connected to a heating burner 16 through a heating solenoid valve 15.

給水側通路に給水を検知して信号を出す給水検知素子17
を設けるとともに、前記給湯用熱交換器１の出口に湯温
を検出する給湯用サーミスタ18を設ける。前記ポンプ３
と前記追焚用熱交換器２に至る温水通路に温水の循環を
検知する循環水検知素子19を設けるとともに、前記追焚
用熱交換器２の入口に循環湯温を検出する追焚用サーミ
スタ20を設ける。給湯せん21を、例えば浴室や台所など
へ給湯配管22を通して、給湯口1bへ接続するとともに、
浴槽４へ自動給湯する為の給湯制御弁24とホッパー25と
水位センサ26を有する自動給湯ユニット23を給湯配管22
から分岐して設け、浴槽４へ接続する。前記の各種セン
サの信号を受けてアクチェータ（電磁弁、ポンプなど）
は制御回路27とリモコン28によって動作するように構成
されている。Water supply detection element 17 that detects water supply in the water supply side passage and outputs a signal
A hot water supply thermistor 18 for detecting the hot water temperature is provided at the outlet of the hot water supply heat exchanger 1. The pump 3
And a circulating water detecting element 19 for detecting circulation of hot water in a hot water passage leading to the heating heat exchanger 2 for heating, and a thermistor for heating water for detecting circulating hot water at the inlet of the heat exchanger 2 for heating. Provide 20. While connecting the hot water supply 21 to the hot water supply port 1b through the hot water supply pipe 22 to, for example, a bathroom or a kitchen,
An automatic hot water supply unit 23 having a hot water supply control valve 24, a hopper 25, and a water level sensor 26 for automatically supplying hot water to the bathtub 4 is connected to the hot water supply pipe 22.
It is branched from and is connected to the bathtub 4. Actuator (solenoid valve, pump, etc.) receiving signals from the various sensors
Is configured to be operated by the control circuit 27 and the remote controller 28.

次に動作を説明すると、給湯せん21を開くことにより、
給水通路に水が流れ、給水検知素子17が動作して、元電
磁弁11、給湯用電磁弁12、比例制御弁13が開弁し、給湯
用バーナ14に流れた燃料に点火させ給湯用サーミスタ18
の信号により、出湯温度をリモコン28の給湯湯温設定器
（図示せず）で設定された給湯温度になるように、制御
回路27で演算処理された出力で前記比例制御弁13を動作
させ、前記給湯用バーナ14の燃焼量を制御して給湯湯温
を安定に制御するように構成している。Next, the operation will be explained. By opening the hot water dispenser 21,
Water flows into the water supply passage, the water supply detection element 17 operates, the main solenoid valve 11, the hot water supply solenoid valve 12, and the proportional control valve 13 open, and the fuel flowing to the hot water supply burner 14 is ignited to ignite the hot water supply thermistor. 18
Signal to operate the proportional control valve 13 with the output processed by the control circuit 27 so that the hot water supply temperature becomes the hot water supply temperature set by the hot water supply hot water temperature setting device (not shown) of the remote controller 28, The combustion amount of the hot water supply burner 14 is controlled to stably control the hot water supply hot water temperature.

一方、リモコン28に設けた追焚スイッチ（特に図示せ
ず）を操作することにより、ポンプ３が運転し浴槽４に
予め蓄えられた水あるいは湯が循環し、これを検知した
循環水検知素子19が動作し、元電磁弁11、追焚用電磁弁
15が開弁し、追焚用バーナ16に流れた燃料に点火させ
る。そして、循環されている戻り湯温を感知し、前記追
焚用熱交換器２の入口に設けた追焚用サーミスタ20の信
号とリモコン28の浴槽湯温設定器（図示せず）で設定さ
れた風呂沸き上げ温度になるように、制御回路27を動作
させ、追焚用電磁弁15を動作させ、追焚用バーナ16の燃
焼量を制御して、循環温水を安定に制御して浴槽湯温を
制御するように構成している。On the other hand, by operating an additional heating switch (not shown) provided on the remote controller 28, the pump 3 is operated to circulate the water or hot water previously stored in the bathtub 4, and the circulating water detecting element 19 which detects this is detected. Operates, the original solenoid valve 11, solenoid valve for additional heating
The valve 15 opens to ignite the fuel that has flowed to the additional burner 16. Then, the circulating hot water temperature is sensed and set by the signal from the additional heating thermistor 20 provided at the inlet of the additional heat exchanger 2 and the bath water temperature setting device (not shown) of the remote controller 28. The control circuit 27 is operated so that the bath heating temperature is reached, the solenoid valve 15 for additional heating is operated, the combustion amount of the additional burner 16 is controlled, and the circulating hot water is stably controlled to control the bath water. It is configured to control the temperature.

また、リモコン28に設けてある自動給湯スイッチ（図示
せず）を操作すると、自動給湯ユニット23の給湯制御弁
24が開弁しリモコン28の給湯湯温設定器（図示せず）で
設定された自動給湯温度になるように、制御回路27で演
算処理された出力で前記比例制御弁13を動作させ、前記
給湯用バーナ14の燃焼量を制御して給湯湯温を安定に制
御することにより、浴槽４への自動給湯化と、浴槽温度
の自動温調を実現している。Further, when an automatic hot water supply switch (not shown) provided on the remote controller 28 is operated, a hot water supply control valve of the automatic hot water supply unit 23.
The proportional control valve 13 is operated with the output processed by the control circuit 27 so that the valve 24 is opened and the automatic hot water supply temperature is set by the hot water supply hot water temperature setting device (not shown) of the remote controller 28. By controlling the combustion amount of the hot water supply burner 14 to stably control the hot water supply temperature, automatic hot water supply to the bathtub 4 and automatic temperature control of the bath temperature are realized.

発明が解決しようとする問題点 しかしながら、上記のような構成では、自動給湯ユニッ
ト23が、浴槽４のすぐ近傍に設置する必要があり、建物
の構成上、浴室が部屋の中央にある場合に取付が不可能
であるとともに、仮に壁側に設置できても、建物外観上
および美観上不具合であるなど、問題点を有していた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described configuration, the automatic hot water supply unit 23 needs to be installed in the immediate vicinity of the bathtub 4, and is installed when the bathroom is located at the center of the room due to the configuration of the building. However, even if it could be installed on the wall side, there were problems such as a defect in the appearance and aesthetics of the building.

本発明は上記問題点に鑑み、自動給湯機能をコスト安価
にし、しかも、設置自由にして工事性、美観上で有効な
ものを提供しようとするものである。In view of the above problems, the present invention intends to provide an automatic hot water supply function which is inexpensive and can be installed freely, which is effective in terms of workability and aesthetics.

問題点を解決するための手段 上記問題点を解決するために本発明の追焚機能付給湯機
は、給湯用熱交換器および浴槽と接続しポンプで温水循
環する温水循環通路の追焚用熱交換器と、前記給湯用熱
交換器の出口に設け、給湯湯温を検出する給湯用サーミ
スタおよび追焚用熱交換器の入口に設け、循環湯温を検
出する追焚用サーミスタと、前記給湯用サーミスタの下
流の給湯通路から分岐して浴槽と接続した浴槽自動給湯
通路に設けた給湯流量制御弁と、追焚用熱交換器の給水
通路に設け、任意の設定給水量を検知して前記給湯流量
制御弁を閉成する給水検知素子と、制御回路とを備え、
前記制御回路は前記給湯流量制御弁を開弁し、かつ前記
給湯用サーミスタの信号で演算処理した制御信号によ
り、給湯用バーナの燃焼量を制御するとともに、給湯用
サーミスタの信号が、自動給湯設定温度よりも低くな
り、給湯可能な能力を越えた場合には、前記ポンプを作
動させ、かつ前記追焚用電磁弁も開弁して前記追焚用バ
ーナも同時に燃焼させて浴槽へ自動給湯し、浴槽への前
記浴槽自動給湯通路と追焚用温水循環路は、浴槽内に設
けた１箇所のアダプターを介して浴槽に接続され、追焚
用温水循環路の追焚用熱交換器への復管は前記アダプタ
ーを貫通して中央に開口し、前記追焚用温水循環路の往
管と前記浴槽自動給湯通路を前記追焚用温水循環路の復
管の外側に位置して下向き開口の前記アダプター内に開
口させたものである。Means for Solving the Problems In order to solve the above problems, the water heater with a reheating function of the present invention is a heating water for a hot water circulation passage which is connected to a hot water heat exchanger and a bath and circulates hot water with a pump. An exchanger, a hot water supply thermistor provided at the outlet of the hot water supply heat exchanger, which is provided at the inlet of the hot water supply hot water heater and an inlet of the reheating heat exchanger, and an additional heating thermistor which detects circulating hot water temperature, and the hot water supply Hot water supply flow control valve provided in the bathtub automatic hot water supply passage branched from the hot water supply passage downstream of the thermistor and the water supply passage of the heat exchanger for additional heating to detect any set water supply amount and A hot water supply detecting element for closing the hot water supply flow rate control valve; and a control circuit,
The control circuit opens the hot water supply flow rate control valve and controls the combustion amount of the hot water supply burner by a control signal calculated by the signal of the hot water supply thermistor, and the signal of the hot water supply thermistor sets the automatic hot water supply setting. When the temperature becomes lower than the temperature and exceeds the ability to supply hot water, the pump is operated and the solenoid valve for additional heating is opened to simultaneously burn the additional heating burner to automatically supply hot water to the bath. The bathtub automatic hot water supply passage to the bathtub and the hot water circulation passage for reheating are connected to the bathtub via one adapter provided in the bathtub, and the hot water circulation passage for reheating is connected to the heat exchanger for reheating. The return pipe penetrates the adapter and opens in the center, and the forward pipe of the hot water circulation passage for reheating and the bathtub automatic hot water supply passage are located outside the return pipe of the hot water circulation passage for reheating and have a downward opening. It is opened in the adapter.

作用 本発明は上記した構成によって、給湯運転時には、給湯
用サーミスタの信号により制御回路で演算処理された出
力で比例制御弁を動作させ給湯用バーナの燃焼量を制御
して給湯湯温を安定に制御することが出来る。また、追
焚運転時には追焚用サーミスタの信号により制御回路で
演算処理された出力で比例制御弁を動作させ追焚用バー
ナの燃焼量を制御して浴槽湯温を安定に制御することが
出来る。With the above-described configuration, the present invention operates the proportional control valve with the output calculated by the control circuit by the signal of the hot water supply thermistor to control the combustion amount of the hot water supply burner and stabilize the hot water supply temperature during the hot water supply operation. It can be controlled. Further, during the heating operation, the proportional control valve is operated by the output processed by the control circuit according to the signal from the heating thermistor to control the combustion amount of the heating burner to stably control the bath water temperature. .

また、上記両者の同時運転には制御回路で優先的に給湯
用モードで演算処理された出力で比例制御弁を動作させ
給湯湯温を安定に制御するとともに、追焚側は追焚用サ
ーミスタの信号で追焚用電磁弁を開閉制御することによ
り、浴槽湯温を安定に制御することが出来る。Further, in the simultaneous operation of both of the above, the control circuit preferentially operates the proportional control valve with the output calculated in the hot water supply mode to stably control the hot water supply hot water temperature, and on the heating side, the heating thermistor By controlling the opening and closing of the additional heating solenoid valve with a signal, the bath water temperature can be controlled stably.

さらに、自動給湯運転時には給湯流量制御弁を開弁する
ことにより、給湯用熱交換器から浴槽自動通路を通して
浴槽へ自動給湯し、その自動給湯湯温を給湯用サーミス
タの信号により制御回路で演算処理された出力で比例制
御弁を動作させ、給湯用バーナの燃焼量を制御して浴槽
湯温を所期の風呂沸き上げ温度に、追焚運転せずに自動
給湯運転のみで完了することが出来る。Furthermore, during the automatic hot water supply operation, the hot water supply flow rate control valve is opened to automatically supply hot water from the hot water supply heat exchanger to the bathtub through the automatic bathtub passage, and the automatic hot water supply temperature is calculated by the control circuit using the signal from the hot water supply thermistor. By operating the proportional control valve with the output, and controlling the combustion amount of the hot water supply burner, the bath water temperature can be set to the desired bath boiling temperature without the additional heating operation and only with the automatic hot water supply operation. .

また、浴槽への自動給湯時に給湯用サーミスタの信号が
自動給湯設定温度よりも低くなり、給湯可能な能力を越
えた場合、ポンプを運転し、追焚用電磁弁も開弁して追
焚用バーナも同時に燃焼させ、自動給湯回路からの温水
と追焚用循環通路の往き口からの温水を浴槽内のアダプ
ターで混合させ下方に噴出させて浴槽への給湯温度を一
定にし、浴槽内の湯温分布を均一にする。また、前記ア
ダプターの中央に設け、浴槽内に開口した追焚用戻り口
から、追い焚き往き口と、自動給湯口からの高温な、お
湯に影響しない、浴槽中段の温水を吸入することによ
り、追い焚き用サーミスタが適確に浴槽内の温度を感知
することができ、浴槽湯温を所期の風呂沸き上げ温度ま
で短時間に自動給湯することが出来る。Also, when the signal from the thermistor for hot water supply falls below the set temperature for automatic hot water supply when hot water is automatically supplied to the bathtub, the pump is operated and the solenoid valve for additional heating is opened to add additional hot water. The burner is also burned at the same time, and the hot water from the automatic hot water supply circuit and the hot water from the outlet of the reheating circulation passage are mixed by the adapter in the bathtub and jetted downward to make the hot water supply temperature to the bathtub constant. Make the temperature distribution uniform. Further, provided in the center of the adapter, from the reheating outlet for opening in the bathtub, the reheating outlet and the high temperature from the automatic hot water supply port, which does not affect the hot water, by inhaling warm water in the middle of the bathtub, The reheating thermistor can accurately detect the temperature in the bathtub, and can automatically supply hot water to the desired bath boiling temperature in a short time.

また部品点数も少なく出来、自動給湯機能をコスト安価
にし、しかも、設置フリーにして工事性、美観上も有効
にして目的を達成することが出来る。In addition, the number of parts can be reduced, the cost of the automatic hot water supply function can be reduced, and the installation can be done freely to improve the workability and aesthetics to achieve the purpose.

実施例 以下本発明の一実施例について、第１図の構成概略図及
び第２図の制御フローチャートに従って説明する。１は
給湯用熱交換器で、給水口1aおよび給湯口1bと給湯流量
制御弁24を介して自動給湯口1cにそれぞれ接続されてお
り、さらに給水側通路に給水を検知して信号を出す給水
検知素子（水量をカウントする水量センサーなど）17を
有する。２は追焚用熱交換器で、温水戻口2aおよび温水
往口2bに接続されている。温水戻口2aから追焚用熱交換
器２に至る温水通路にポンプ３と温水の循環を検知する
循環水検知素19を設け、さらに、前記温水戻口2aおよび
温水往口2bを浴槽４に設け、下向き開口30aを有する浴
槽接続口30（アダプターともいう）に接続管５で連結し
て温水循環通路を構成する。前記各々の熱交換器1,2に
は排気筒６が接続され、排気ファン７によって燃焼排気
ガスを排気口８に排出するように構成する。また、燃焼
用空気を給気口９から供給できるようにケース10の一部
に形成してある。Embodiment An embodiment of the present invention will be described below with reference to the schematic configuration diagram of FIG. 1 and the control flowchart of FIG. Reference numeral 1 is a heat exchanger for hot water supply, which is connected to an automatic hot water supply port 1c via a hot water supply port 1a and a hot water supply port 1b and a hot water supply flow rate control valve 24, respectively, and further supplies a signal by detecting the water supply in a water supply side passage. It has a detection element (a water amount sensor for counting the amount of water) 17. Reference numeral 2 is a heat exchanger for additional heating, which is connected to the hot water return port 2a and the hot water outlet port 2b. A pump 3 and a circulating water detector 19 for detecting circulation of hot water are provided in a hot water passage from the hot water return port 2a to the heat exchanger 2 for additional heating, and the hot water return port 2a and the hot water outlet port 2b are provided in the bathtub 4. A hot water circulation passage is formed by connecting the bathtub connection port 30 (also referred to as an adapter) having a downward opening 30a with a connection pipe 5. An exhaust pipe 6 is connected to each of the heat exchangers 1 and 2, and a combustion exhaust gas is discharged to an exhaust port 8 by an exhaust fan 7. Further, it is formed in a part of the case 10 so that combustion air can be supplied from the air supply port 9.

燃料通路は、元電磁弁11と比例制御弁13を直列接続し、
これより分岐して給湯用電磁弁12を通して給湯バーナ14
と、追焚用電磁弁15を通して追焚用バーナ16に、前記比
例制御弁13が共通に接続されるように分岐接続する。前
記給湯用熱交換器１の出口に設けた給湯用サーミスタ18
の信号とリモコン28の給湯湯温設定器（図示せず）で設
定された給湯温度になるように、制御回路27で演算処理
された出力で前記比例制御弁13を動作させ、前記給湯用
バーナ14の燃焼量を制御して給湯湯温を安定に制御する
ように構成している。In the fuel passage, the original solenoid valve 11 and the proportional control valve 13 are connected in series,
Branch from this and pass the hot water supply burner 14 through the hot water supply solenoid valve 12.
And a branching burner 16 is branched through an additional solenoid valve 15 so that the proportional control valve 13 is commonly connected. Hot water supply thermistor 18 provided at the outlet of the hot water supply heat exchanger 1.
Signal and the hot water supply temperature set by a hot water supply temperature setting device (not shown) of the remote controller 28, the proportional control valve 13 is operated by the output processed by the control circuit 27, and the hot water supply burner is operated. The combustion amount of 14 is controlled to stably control the hot water temperature.

一方、前記追焚用熱交換器２の入口に設けた追焚用サー
ミスタ20の信号とリモコン28の浴槽湯温設定器（図示せ
ず）で設定された風呂沸き上げ温度になるように、制御
回路27で演算処理された出力で、前記比例制御弁13を動
作させ、前記追焚用バーナ16の燃焼量を制御して、循環
温水を安定に制御して浴槽湯温を制御するように構成し
ている。On the other hand, control is performed so that the signal from the reheating thermistor 20 provided at the inlet of the reheating heat exchanger 2 and the bath boiling temperature set by the bathtub hot water temperature setting device (not shown) of the remote control 28 are set. With the output processed by the circuit 27, the proportional control valve 13 is operated, the combustion amount of the additional heating burner 16 is controlled, the circulating hot water is stably controlled, and the bath water temperature is controlled. is doing.

尚、浴槽湯温の立上りを早くする為、前記比例制御弁13
で制御される前記追焚用バーナ16の燃焼量を浴槽湯温設
定器で設定された風呂沸き上げ温度まで、比例制御せず
に最大能力で制御して沸き上がり温度に到達した時に、
前記追焚用電磁弁15を閉弁するように前記制御回路27を
構成している。前記給湯用電磁弁12と追焚用電磁弁15は
各々の湯温制御をする時に開弁閉弁するように構成して
ある。In addition, in order to speed up the rise of bath water temperature, the proportional control valve 13
The amount of combustion of the additional heating burner 16 controlled by up to the bath boiling temperature set by the bath water temperature setting device, when the boiling temperature is reached by controlling the maximum capacity without proportional control,
The control circuit 27 is configured to close the solenoid valve 15 for additional heating. The hot water supply solenoid valve 12 and the reheating solenoid valve 15 are configured to open and close when the respective hot water temperatures are controlled.

また、給湯と追焚の同時運転時には前記制御回路27で優
先的に給湯用モードで演算処理された出力で前記比例制
御弁13を動作させた給湯湯温を安定に制御するととも
に、追焚側は前記追焚用サーミスタ20の信号で前記追焚
用電磁弁15を開閉制御することにより、浴槽湯温を安定
に制御するように構成してある。Further, during the simultaneous operation of hot water supply and hot water heating, the control circuit 27 gives priority to the calculation of the hot water supply mode to operate the proportional control valve 13 to stably control the hot water temperature, and the hot water heating side. Is configured to stably control the bath water temperature by controlling the opening and closing of the additional heating solenoid valve 15 by the signal of the additional heating thermistor 20.

さらに、自動給湯運転時には給湯流量制御弁24を上流に
して下流に安全弁（バキュームブレーカ）29を設けた浴
槽自動給湯通路31を、給湯用サーミスタ18の下流から分
岐して設けている。そして前記給湯流量制御弁24を開弁
することにより、前記給湯用熱交換器１を通し、前記給
湯用サーミスタ18の信号により、前記制御回路27で演算
処理された出力で前記比例制御弁13を動作させ前記給湯
用バーナ14の燃焼量を制御して給湯湯温を安定に制御し
て、前記浴槽４へ自動給湯するように構成してある。ま
た冬期などの水温が低い場合などに給湯能力以上になっ
て前記給湯用サーミスタ18の信号が自動給湯設定温度よ
りも低くなった場合には、ポンプ３を運転し、循環水検
知素子19で通水を検知し、前記追焚用電磁弁15も開弁し
て前記追焚用バーナ16も同時に燃焼させることにより、
大能力で浴槽湯温を所期の風呂沸き上げ温度まで短時間
に自動給湯するように構成してある。Further, during the automatic hot water supply operation, a hot water supply flow control valve 24 is provided upstream, and a bathtub automatic hot water supply passage 31 provided with a safety valve (vacuum breaker) 29 is provided downstream from the downstream of the hot water supply thermistor 18. Then, by opening the hot water supply flow rate control valve 24, the hot water supply heat exchanger 1 is passed through, and the proportional control valve 13 is operated by the output of the control circuit 27 by the signal of the hot water supply thermistor 18. The hot water supply burner 14 is operated to control the amount of combustion of the hot water supply burner 14 to stably control the hot water supply hot water temperature and automatically supply hot water to the bathtub 4. If the signal from the hot water supply thermistor 18 becomes lower than the automatic hot water supply set temperature due to the hot water supply capacity being exceeded, such as when the water temperature is low in the winter, etc., the pump 3 is operated and the circulating water detection element 19 is used. By detecting water, by also opening the solenoid valve 15 for additional heating and burning the burner 16 for additional heating at the same time,
With a large capacity, it is configured to automatically supply hot water to the desired bath boiling temperature in a short time.

上記実施例の動作を説明する。The operation of the above embodiment will be described.

Ｉ、給湯運転 給湯口1bに接続された給湯配管22を通して、例えば浴室
や台所などの給湯せん21を開けると、給水検知素子17で
給水を検知して給湯運転シーケンスが動作するように構
成されており、排気ファン７が回転する。元電磁弁11、
給湯用電磁弁12、比例制御弁13を開弁させ、燃料に着火
保持させる。（着火保持手段は特に図示せず）そして、
給湯用バーナ14が燃焼することにより、給湯用熱交換器
１が熱せられ、給湯口1bを通して給湯せん21から出湯さ
れる。I, Hot Water Supply Operation When the hot water supply pipe 21 connected to the hot water supply port 1b is used to open the hot water supply pipe 21 in a bathroom or kitchen, for example, the water supply detecting element 17 detects water supply and the hot water supply operation sequence is operated. And the exhaust fan 7 rotates. Original solenoid valve 11,
The hot water solenoid valve 12 and the proportional control valve 13 are opened, and the fuel is ignited and held. (Ignition holding means is not specifically shown)
The hot water supply burner 14 burns to heat the hot water supply heat exchanger 1, and the hot water is discharged from the hot water supply pipe 21 through the hot water supply port 1b.

その出湯温度を給湯用サーミスタ18で検知してリモコン
28の給湯湯温設定器（図示せず）で設定された給湯温度
になるように、制御回路27で演算処理された出力で前記
比例制御弁13を動作させ、前記給湯用バーナ14の燃焼量
を制御して給湯湯温を安定に制御する。The hot water temperature is detected by the hot water supply thermistor 18 and the remote control
The proportional control valve 13 is operated by the output processed by the control circuit 27 so that the hot water supply temperature set by the hot water supply hot water temperature setting device (not shown) of 28 is set, and the combustion amount of the hot water supply burner 14 is set. Is controlled to stably control the hot water temperature.

II、追焚運転 一方、リモコン28に設けた追焚運転スイッチ（特に図示
せず）を操作することによりポンプ３と排気ファン７が
回転する。そして、浴槽４に予め蓄えられた湯や水がポ
ンプ３で循環されると、循環水検知素子19が検知して追
焚運転シーケンスが動作するように構成されており、元
電磁弁11、追焚用電磁弁15、比例制御弁13を開弁させ、
燃料に着火保持させる。（着火保持手段は特に図示せ
ず）そして、追焚用バーナ15が燃焼することにより追焚
用熱交換器２が熱せられ温水往口2bから接続管５を通し
て浴槽４内を循環して、温水戻口2aに温水が循環され
る。浴槽４内の湯温と等しい循環温水を追焚用サーミス
タ20の信号とリモコン28の浴槽湯温設定器（図示せず）
で設定された風呂沸き上げ温度になるように、制御回路
27で演算処理された出力で前記比例制御弁13を動作さ
せ、前記追焚用バーナ16の燃焼量を制御して、循環温水
を安定に制御して浴槽湯温を制御する。II, Reheating Operation On the other hand, the pump 3 and the exhaust fan 7 are rotated by operating a reheating operation switch (not shown) provided on the remote controller 28. Then, when hot water or water stored in advance in the bathtub 4 is circulated by the pump 3, the circulating water detection element 19 detects and the heating operation sequence is operated. Open the solenoid valve 15 for heating and the proportional control valve 13,
Keep the fuel on ignition. (Ignition holding means is not shown in particular) Then, as the reburning burner 15 burns, the reheating heat exchanger 2 is heated to circulate in the bathtub 4 from the hot water outlet port 2b through the connecting pipe 5 to generate hot water. Hot water is circulated through the return port 2a. Circulating hot water equal to the hot water in the bathtub 4 is signaled by the thermistor 20 for additional heating and a bathtub hot water temperature setting device (not shown) of the remote controller 28.
Control circuit so that the bath boiling temperature set by
The proportional control valve 13 is operated by the output calculated in 27 to control the combustion amount of the reburning burner 16 to stably control the circulating hot water to control the bath water temperature.

尚、浴槽湯温の立上りを早くする為、前記比例制御弁13
で制御される前記追焚用バーナ16の燃焼量を浴槽湯温設
定器で設定された風呂沸き上げ温度まで、比例制御せず
に最大能力で制御して沸き上がり温度に到達した時に、
追焚用電磁弁15を閉弁する。In addition, in order to speed up the rise of bath water temperature, the proportional control valve 13
The amount of combustion of the additional heating burner 16 controlled by up to the bath boiling temperature set by the bath water temperature setting device, when the boiling temperature is reached by controlling the maximum capacity without proportional control,
The additional solenoid valve 15 is closed.

III、自動給湯運転 また、リモコン28に設けた自動給湯運転スイッチを操作
すると、給湯流量制御弁24を開弁し、前記給湯用熱交換
器１を通して、自動給湯口1cから、自動給湯接続管32を
経由しアダプター30より浴槽４へ自動給湯される。そし
て、給水検知素子17で、その給水を検知して自動給湯運
転シーケンスが動作するように構成されており排気ファ
ン７が回転する。III, automatic hot water supply operation When the automatic hot water supply operation switch provided on the remote controller 28 is operated, the hot water supply flow rate control valve 24 is opened, and the automatic hot water supply port 1c is passed through the hot water supply heat exchanger 1 to the automatic hot water supply connection pipe 32. Hot water is automatically supplied to the bathtub 4 from the adapter 30 via the. Then, the water supply detecting element 17 is configured to detect the water supply and operate the automatic hot water supply operation sequence, and the exhaust fan 7 rotates.

元電磁弁11、給湯用電磁弁12、比例制御弁13を開弁さ
せ、燃料に着火保持させる。（着火保持手段は特に図示
せず）そして、給湯用バーナ14が燃焼することにより給
湯用熱交換器１が熱せられ、自動給湯口1cから浴槽４へ
自動給湯される。その給湯温度を給湯用サーミスタ18で
検知してリモコン28の浴槽湯温設定器（図示せず）で設
定された給湯温度になるように、制御回路27で演算処理
された出力で比例制御弁13を動作させ給湯用バーナ14の
燃焼量を制御して給湯湯温を安定に制御して浴槽４へ自
動給湯する。The original solenoid valve 11, the hot water solenoid valve 12, and the proportional control valve 13 are opened, and the fuel is ignited and held. (Ignition holding means is not particularly shown) Then, the hot water supply burner 14 burns to heat the hot water supply heat exchanger 1, and the hot water supply port 1c automatically supplies hot water to the bathtub 4. The hot water supply temperature is detected by the hot water supply thermistor 18, and the proportional control valve 13 is operated by the output of the control circuit 27 so that the hot water supply temperature is set by the bath water temperature setting device (not shown) of the remote controller 28. Is operated to control the combustion amount of the hot water supply burner 14 to stably control the hot water supply hot water temperature to automatically supply hot water to the bathtub 4.

こうすることによって、所期の風呂沸き上げ温度に追焚
運転をせずに自動給湯運転のみで完了することが出来
る。By doing so, it is possible to complete the operation only by the automatic hot water supply operation without the operation of heating the bath to the desired bath boiling temperature.

IV、自動給湯と追焚の同時運転 また、冬期などの水温が低い場合などに給湯能力以上に
なって前記給湯用サーミスタ18の信号が自動給湯設定温
度よりも低くなった場合には、ポンプ３を運転し、前記
追焚用電磁弁15も開弁して前記追焚用バーナ16も同時に
燃焼させて、自動給湯と追焚運転を同時に行なうことに
より大能力で、前記リモコン28の浴槽湯温設定器（図示
せず）で設定された給湯温度になるように、追焚用熱交
換器２の上流に設けた追焚用サーミスタ20で浴槽４内の
湯温を感知し、前記追焚用電磁弁15を開閉することによ
り、前記浴槽４への浴槽湯温を所期の風呂沸き上げ温度
まで短時間に自動給湯することが出来る。IV, Simultaneous operation of automatic hot water supply and reheating In addition, when the signal of the hot water supply thermistor 18 becomes lower than the automatic hot water supply set temperature because the water supply capacity is exceeded and the water temperature is low such as in winter, the pump 3 The hot water heating solenoid valve 15 is also opened to burn the hot water burner 16 at the same time, so that the hot water bath temperature of the remote controller 28 is large by simultaneously performing the automatic hot water supply and the hot water heating operation. The hot water temperature in the bathtub 4 is sensed by the additional heating thermistor 20 provided upstream of the additional heating heat exchanger 2 so that the hot water supply temperature set by the setting device (not shown) is reached. By opening and closing the solenoid valve 15, the bath water temperature to the bathtub 4 can be automatically supplied to the desired bath boiling temperature in a short time.

浴槽４への給湯量は給水検知素子17に給水量をカウント
する水量センサーを使用しているので、点火・消火水量
を検知するとともに、自動的に給湯流量制御弁24を閉弁
して自動給湯を停止することが出来る。又、給湯能力以
上になった場合の追焚運転の開始する水量をあらかじめ
制御回路27に記憶させておき、水量センサーからの信号
により、アダプター30の位置より下部での水量での追焚
運転、すなわち、ポンプ３の空運転を防止することが出
来る。The amount of hot water supplied to the bathtub 4 uses a water amount sensor that counts the amount of water supplied to the water supply detecting element 17, so the amount of ignition / extinguishing water is detected and the hot water supply flow control valve 24 is automatically closed to automatically supply hot water. Can be stopped. In addition, the amount of water to start the additional heating operation when the hot water supply capacity is exceeded is stored in the control circuit 27 in advance, and the signal from the water amount sensor causes the additional heating operation with the amount of water below the position of the adapter 30, That is, it is possible to prevent the idle operation of the pump 3.

安全弁（バキュームブレーカ）29は、自動給湯運転停止
時に、給湯流量制御弁から下流に、空気層を設け、浴槽
循環路から給湯回路への逆流を防止する為のものであ
る。The safety valve (vacuum breaker) 29 is provided for preventing a backflow from the bathtub circulation path to the hot water supply circuit by providing an air layer downstream from the hot water supply flow control valve when the automatic hot water supply operation is stopped.

また、アダプター30内に開口した自動給湯接続管32から
の高温湯と、アダプター30内に開口した接続管５の温水
往口2b側からの追焚された浴槽水が混合されて浴槽４内
に供給され、そしてアダプター30を貫通して浴槽４内に
開口した接続管５の温水戻口2a側から浴槽水が追焚用熱
交換器２に戻り、浴槽湯温を追い焚用サーミスタ20が正
しく検知できる。Further, the hot water from the automatic hot water supply connection pipe 32 opened in the adapter 30 and the bath water reheated from the hot water outlet 2b side of the connection pipe 5 opened in the adapter 30 are mixed into the bathtub 4. The bath water returns from the hot water return port 2a of the connection pipe 5 that is supplied and penetrates the adapter 30 and opens in the bathtub 4, to the heat exchanger 2 for additional heating, and the thermistor 20 for additional heating of the hot water in the bathtub is properly operated. Can be detected.

発明の効果 以上のように本発明によれば次の効果を有する。Effects of the Invention As described above, the present invention has the following effects.

（１） 燃焼量を比例制御して湯温制御するので湯温の
安定化が図れる。(1) Since the hot water temperature is controlled by proportionally controlling the combustion amount, the hot water temperature can be stabilized.

（２） 特に、浴槽湯温が自動給湯により、比例制御で
湯温制御できるので、従来のHi−LO−OFFあるいはON−O
FF制御による湯温制御に比べて、省エネルギー化が図れ
る。(2) Especially, since the bath water temperature can be controlled by proportional control by automatic hot water supply, the conventional Hi-LO-OFF or ON-O
Energy saving can be achieved compared to hot water temperature control by FF control.

（３） 自動給湯機能を本体に内蔵したので、コスト安
価にして、しかも、設置自由にして工事性を向上させる
ことが出来るとともに、建物の美観上も損ねないもので
ある。(3) Since the main body has an automatic hot water supply function, the cost can be reduced, the installation can be freely performed to improve the workability, and the aesthetic appearance of the building is not impaired.

（４） 給水検知素子を給水量をカウントする水量セン
サーにすることにより、自動給湯時には浴槽への給湯量
を任意に設定して自動的に停止することが出来、従来の
ように点火・消火水量を検知するセンサー以外に浴槽の
水位を検知する水位センサーを必要としない。(4) By using a water amount sensor that counts the amount of water supplied as the water supply detection element, the amount of hot water supplied to the bathtub can be arbitrarily set and automatically stopped during automatic hot water supply. No water level sensor that detects the water level in the bathtub is required other than the sensor that detects the water level.

（５） 浴槽の蓋をしたまま自動給湯が出来るので、湯
ざめもなく、省エネルギー化が図れ、経済的である。(5) Since hot water can be supplied automatically with the lid of the bathtub kept open, there is no need to sprinkle hot water, energy can be saved, and it is economical.

（６） 所期の風呂沸き上げ温度に追焚運転をせずに、
自動給湯運転のみで完了することが出来、従来のように
自動給湯後に追焚運転を必要としないので、風呂沸き上
がり時間も短かくなり、経済的に快適な、お風呂の生活
が出来る。(6) Without heating to the desired bath boiling temperature,
It can be completed only by the automatic hot water supply operation, and no additional heating operation is required after the automatic hot water supply as in the past, so the bath boiling time is shortened, and an economically comfortable bath life can be achieved.

（７） 冬期などの水温が低い場合などに給湯能力以上
になって給湯用サーミスタの信号が自動給湯設定温度よ
りも低くなった場合には、ポンプを運転し追焚用電磁弁
も開弁して追焚用バーナも燃焼させて、自動給湯、追焚
運転を同時に行なうことにより、大能力で浴槽湯温を所
期の風呂沸き上げ温度まで短時間に自動給湯することが
出来る。又、自動給湯と、追焚往き口の浴槽への接続
を、アダプターで一箇所に集め混合させたお湯を、浴槽
下部に噴出することにより、浴槽湯温を均一にし、か
つ、追焚戻り口をアダプターを貫通して中央に開口し、
浴槽中段部の湯を吸入することにより、真の浴槽内の湯
温を、追焚用サーミスタで感知させることができ、設定
温度に正確に沸き上げが出来る。(7) If the signal from the hot water supply thermistor becomes lower than the automatic hot water supply set temperature due to the hot water supply capacity being exceeded when the water temperature is low, such as in winter, the pump is operated and the additional heating solenoid valve is also opened. By burning the additional heating burner and performing automatic hot water supply and additional heating operation at the same time, it is possible to automatically supply hot water to the desired bath boiling temperature in a short time. In addition, the automatic hot water supply and the connection of the reheating port to the bathtub are collected by an adapter at one place and the mixed hot water is spouted to the lower part of the bathtub to make the temperature of the bathtub uniform, and the reheating port. Through the adapter and open in the center,
By inhaling the hot water in the middle part of the bathtub, the true hot water temperature in the bathtub can be sensed by the thermistor for reheating, and the boiling can be done accurately to the set temperature.

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

第１図は本発明の一実施例を示す追焚機能付給湯機の構
成概略図、第２図は同給湯機の制御フローチャート、第
３図は従来例の構成概略図である。 １……給湯用熱交換器、２……追焚用熱交換器、３……
ポンプ、４……浴槽、11……元電磁弁、12……給湯用電
磁弁、13……比例制御弁、14……給湯用バーナ、15……
追焚用電磁弁、16……追焚用バーナ、17……給水検知素
子、18……給湯用サーミスタ、19……循環水検知素子、
20……追焚用サーミスタ、24……給湯制御弁、30……ア
ダプター。FIG. 1 is a schematic configuration diagram of a water heater with a reheating function showing one embodiment of the present invention, FIG. 2 is a control flowchart of the water heater, and FIG. 3 is a schematic configuration diagram of a conventional example. 1 ... Heat exchanger for hot water supply, 2 ... Heat exchanger for additional heating, 3 ...
Pump, 4 ... Bathtub, 11 ... Original solenoid valve, 12 ... Hot water solenoid valve, 13 ... Proportional control valve, 14 ... Hot water burner, 15 ...
Solenoid valve for reheating, 16 ... Burner for reheating, 17 ... Water supply detecting element, 18 ... Hot water supply thermistor, 19 ... Circulating water detecting element,
20 …… additional heating thermistor, 24 …… hot water supply control valve, 30 …… adapter.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】給湯用熱交換器および浴槽と接続しポンプ
で温水循環する温水循環通路の追焚用熱交換器と、前記
給湯用熱交換器の出口に設け、給湯湯温を検出する給湯
用サーミスタおよび追焚用熱交換器の入口に設け、循環
湯温を検出する追焚用サーミスタと、前記給湯用サーミ
スタの下流の給湯通路から分岐して浴槽と接続した浴槽
自動給湯通路を設けた給湯流量制御弁と、給湯用熱交換
器の給水通路に設け、任意の設定給水量を検知して前記
給湯流量制御弁を閉成する給水検知素子と、制御回路と
を備え、前記制御回路は前記給湯流量制御弁を開弁し、
かつ前記給湯用サーミスタの信号で演算処理した制御信
号により、給湯用バーナの燃焼量を制御するとともに、
給湯用サーミスタの信号が、自動給湯設定温度よりも低
くなり、給湯可能な能力をこえた場合には、前記ポンプ
を作動させ、前記追焚用電磁弁も開弁して前記追焚用バ
ーナも同時に燃焼させて浴槽へ自動給湯し、浴槽への浴
槽自動給湯通路と追焚用温水循環路は浴槽内に設けた、
１箇所のアダプターを介して浴槽に接続され、前記追焚
用温水循環路の追焚用熱交換器への復管は、前記アダプ
ターを貫通して中央に開口し、前記追焚用温水循環路の
往管と前記浴槽自動給湯通路を、前記追焚用温水循環路
の復管の外側に位置して下向き開口の前記アダプター内
に開口させた追焚機能付給湯機。1. A hot water heat exchanger for reheating a hot water circulation passage, which is connected to a hot water heat exchanger and a bathtub and circulates hot water by a pump, and hot water supply means provided at the outlet of the hot water heat exchanger for detecting hot water temperature. The thermistor for heating and the heat exchanger for reheating are provided at the inlet, and a thermistor for reheating that detects the circulating hot water temperature and a bathtub automatic hot water supply passage branched from the hot water supply passage downstream of the hot water supply thermistor and connected to the bathtub are provided. The hot water supply flow rate control valve, a water supply detection element that is provided in the water supply passage of the hot water supply heat exchanger, detects the arbitrary set water supply amount and closes the hot water supply flow rate control valve, and a control circuit. Open the hot water supply flow control valve,
And, by the control signal arithmetically processed by the signal of the hot water supply thermistor, while controlling the combustion amount of the hot water supply burner,
When the signal of the hot water supply thermistor becomes lower than the set temperature for automatic hot water supply and exceeds the ability to supply hot water, the pump is operated and the solenoid valve for heating is also opened to burn the heating burner. At the same time, it was burned to automatically supply hot water to the bathtub, and a bathtub automatic hot water supply passage to the bathtub and a hot water circulation passage for additional heating were provided in the bathtub.
Connected to the bathtub via an adapter at one location, the return pipe of the hot water circulation passage for reheating to the heat exchanger for reheating is opened at the center through the adapter, and the hot water circulation passage for heating is added. The water heater with a reheating function in which the forward pipe and the bathtub automatic hot water supply passage are located outside the return pipe of the hot water circulation passage for reheating and are opened in the downward opening adapter.