JP2002357359A - Hot-water supplying device - Google Patents
Hot-water supplying deviceInfo
- Publication number
- JP2002357359A JP2002357359A JP2001250299A JP2001250299A JP2002357359A JP 2002357359 A JP2002357359 A JP 2002357359A JP 2001250299 A JP2001250299 A JP 2001250299A JP 2001250299 A JP2001250299 A JP 2001250299A JP 2002357359 A JP2002357359 A JP 2002357359A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water supply
- temperature
- hot
- general
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Control Of Temperature (AREA)
- Control For Baths (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、一般給湯路を介し
て給湯し、且つ、前記一般給湯路を介して給湯する湯水
よりも高温の湯水を高温給湯路を介して給湯する給湯装
置に関し、詳しくは、給水路を通して供給される水をバ
ーナの燃焼により加熱して一般給湯路より給湯する水加
熱用の熱交換器と、前記給水路を通して供給される水を
前記熱交換器を迂回して前記一般給湯路に供給するバイ
パス路と、前記一般給湯路における前記バイパス路の接
続箇所よりも上流側に分岐接続されて、前記バーナにて
加熱された湯水を高温給湯負荷に供給する高温給湯路
と、前記高温給湯路における湯水の通流を断続する高温
給湯断続弁と、給湯運転を制御する制御手段とが設けら
れ、前記制御手段が、前記高温給湯断続弁を閉弁して一
般給湯用の目標温度にて前記一般給湯路を通して給湯す
るように給湯運転を制御する一般給湯制御、前記高温給
湯断続弁を開弁して高温給湯用の目標温度にて前記高温
給湯路を通して給湯するように給湯運転を制御する高温
給湯制御、及び、給湯割り込み制御を実行するように構
成され、前記給湯割り込み制御においては、前記高温給
湯制御を実行しているときに一般給湯の割り込みが指令
されると、一般給湯用の目標温度にて前記一般給湯路を
通して給湯するように給湯運転を制御する運転状態に切
り換え、且つ、その切り換えよりも遅延させて前記高温
給湯断続弁を閉弁させるように構成されている給湯装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply apparatus for supplying hot water via a general hot water supply path, and for supplying hot water via a high temperature hot water supply path than hot water supplied via the general hot water supply path. Specifically, a water heat exchanger for heating water supplied through a water supply passage by burning a burner and supplying hot water from a general hot water supply passage, and water supplied through the water supply passage bypassing the heat exchanger. A bypass path for supplying the general hot water supply path, and a high-temperature hot water supply path branched and connected to an upstream side of a connection point of the bypass path in the general hot water supply path to supply hot water heated by the burner to a high-temperature hot water supply load. A high-temperature hot water supply interrupting valve for interrupting the flow of hot water in the high-temperature hot water supply path, and control means for controlling hot water supply operation, wherein the control means closes the high-temperature hot water supply interrupting valve to open and close the hot water supply interrupting valve. Target temperature General hot water supply control for controlling hot water supply operation to supply hot water through the general hot water supply path, and controlling the hot water supply operation so as to supply hot water through the high temperature hot water supply path at a target temperature for high temperature hot water supply by opening the high temperature hot water supply intermittent valve. High-temperature hot water supply control, and hot water supply interrupt control are executed. In the hot water supply interrupt control, when an interrupt of general hot water supply is instructed while the high-temperature hot water supply control is being executed, the general hot water supply control is performed. A hot water supply device configured to switch to an operation state in which hot water supply operation is controlled to supply hot water through the general hot water supply path at a target temperature, and to close the high-temperature hot water supply intermittent valve with a delay from the switching. .
【０００２】[0002]
【従来の技術】上記構成の給湯装置は、例えば浴槽に高
温湯（約９０℃の高温湯）を追焚き給湯したり、食器洗
浄機や床暖房装置等に対して上記追焚き給湯の場合と同
様な高温湯を給湯するなど、前記高温給湯路から高温湯
を給湯する高温給湯制御を実行しているときに、例え
ば、図６に示すように、一般給湯路４に備えられた給湯
栓５が開き操作されて割り込みセンサ１７で湯水の通流
が検出され、一般給湯の割り込みが指令されると、一般
給湯用の目標温度にて一般給湯路４を通して給湯するよ
うに給湯運転を制御する一般給湯制御に運転状態を切り
換えるようにしている。そして、その一般給湯制御への
切り換えよりも遅延させて高温給湯断続弁２１を閉弁さ
せることによって、一般給湯路４に熱交換器２から高温
湯が多量に流出しないようにし、且つ、バイパス路７を
通して供給される水のを混合させて一般給湯路４から給
湯される湯の温度が高くならないようにしている。2. Description of the Related Art A hot water supply apparatus having the above-mentioned structure is, for example, a case in which high-temperature hot water (high-temperature hot water of about 90 ° C.) is additionally heated in a bathtub, or a case in which the above-described hot-water supply is applied to a dishwasher, a floor heating device and the like. When high-temperature hot water supply control for supplying high-temperature hot water from the high-temperature hot water supply path, such as supplying similar high-temperature hot water, is performed, for example, as shown in FIG. Is opened, the flow of hot water is detected by the interrupt sensor 17, and when an interrupt of general hot water supply is instructed, the hot water supply operation is controlled so that hot water is supplied through the general hot water supply path 4 at the target temperature for general hot water supply. The operation state is switched to hot water supply control. By closing the high-temperature hot-water supply intermittent valve 21 at a time later than the switching to the general hot-water supply control, it is possible to prevent a large amount of high-temperature hot water from flowing out of the heat exchanger 2 into the general hot-water supply path 4 and to perform a bypass path. The water supplied through the hot water supply 7 is mixed so that the temperature of the hot water supplied from the general hot water supply path 4 does not increase.
【０００３】つまり、上述したような高温給湯制御を実
行しているときに一般給湯の割り込みが指令された場
合、直ちに、高温給湯断続弁２１を閉弁させて前記一般
給湯制御に切り換えるようにすると、熱交換器２内部や
その出口付近の湯路に残っている高温湯が一般給湯路４
を通して給湯されるおそれがあるので、上記した一般給
湯用の目標温度にて一般給湯路４を通して給湯する運転
状態に切り換えた後も高温給湯断続弁２１を開弁状態に
維持させ、その運転状態の切り換えよりも遅延させて高
温給湯断続弁２１を閉弁させるようにして、上記したよ
うに熱交換器２等に残っている高温湯を高温給湯路６か
ら流出させるようにしたものである。In other words, if an interrupt for general hot water supply is issued while the above-described high temperature hot water supply control is being executed, the high temperature hot water supply interrupting valve 21 is immediately closed to switch to the general hot water supply control. The hot water remaining in the heat exchanger 2 and the hot water path near the outlet thereof is supplied to the general hot water supply path 4.
Therefore, after switching to the operation state in which hot water is supplied through the general hot water supply path 4 at the above-described target temperature for general hot water supply, the high-temperature hot water supply intermittent valve 21 is maintained in the open state. The high-temperature hot water supply intermittent valve 21 is closed with a delay after the switching, so that the high-temperature hot water remaining in the heat exchanger 2 and the like flows out of the high-temperature hot water supply passage 6 as described above.
【０００４】具体的には、例えば、運転状態を切り換え
た後に、熱交換器にて加熱された後の湯温の検出値が設
定温度以下に低下すると高温給湯断続弁を閉弁させる構
成、又は、設定時間が経過した後に高温給湯断続弁を閉
弁させる構成などがあった。図示の例では、前記バイパ
ス路７に、第一バイパス路３７と第二バイパス路３８と
が並列に設けられ、夫々に第一バイパス弁７ａと第二バ
イパス弁７ｂとが設けられている。そして、高温給湯制
御を実行しているときに一般給湯の割り込みが指令され
ると、両バイパス弁７ａ，７ｂを共に開いて、一般給湯
路４から高温の湯が流れにくいようにしている。又、高
温給湯制御をしているときに一般給湯の割り込みが指令
されると、熱交換器２への給水路１に供給される給水の
温度に応じて、高温給湯断続弁２１の開度を給湯器１に
供給される水の温度が高いほど大きくなるように調節し
て、前記高温給湯路６を通流する湯量を、給水サーミス
タ１２により検出された給水路１からの水の温度が高い
ほど多く、低いほど少なくなるように調節することが行
われている。Specifically, for example, after switching the operation state, when the detected value of the hot water temperature after being heated by the heat exchanger falls below the set temperature, the high-temperature hot water supply intermittent valve is closed, or There has been a configuration in which the high-temperature hot water supply intermittent valve is closed after a set time has elapsed. In the illustrated example, a first bypass path 37 and a second bypass path 38 are provided in parallel with the bypass path 7, and a first bypass valve 7a and a second bypass valve 7b are provided respectively. When a general hot water supply interrupt is instructed during the execution of the high temperature hot water supply control, both the bypass valves 7a and 7b are opened to make it difficult for the high temperature hot water to flow from the general hot water supply passage 4. When an interrupt for general hot water supply is instructed during high-temperature hot water supply control, the opening degree of the high-temperature hot water supply interrupting valve 21 is changed according to the temperature of water supplied to the water supply passage 1 to the heat exchanger 2. The amount of hot water flowing through the high-temperature hot water supply channel 6 is adjusted by increasing the temperature of the water supplied to the hot water supply device 1 so that the higher the temperature, the higher the temperature of the water from the water supply channel 1 detected by the water supply thermistor 12. Adjustments are made so that the more the number is, the lower the number is.
【０００５】[0005]
【発明が解決しようとする課題】上記従来構成は、上記
運転状態の切り換えの後も、高温給湯断続弁２１を開弁
状態に維持させることにより、熱交換器２にて加熱され
た後の湯を一般給湯路４だけでなく高温給湯路６にも分
配させて通流させるようにしたもので、一般給湯路４と
高温給湯路６の湯水の通流量の分配比率は、給水路１か
らの水の給水温度により調節され、一般給湯路４への流
量とは関わりなく調節されていた。また、前記高温給湯
路６に通流する湯量、即ちパージ流量は、例えば図７に
示すように、給水サーミスタ１２で検出する給水路１か
らの水の給水温度が低温側の特定の温度以下の場合には
一定の低温側パージ設定流量を設定してこの給水温度の
領域ではパージ流量を低温側パージ設定流量Ｑ1 に維持
し、高温側の特定の温度以上の場合には一定の前記低温
側パージ設定流量Ｑ1 よりも多い高温側パージ設定流量
Ｑ2 を設定してこの給水温度の領域ではパージ流量を高
温側パージ設定流量Ｑ2 に維持し、両特定温度の間で
は、低温側パージ設定流量Ｑ1 と高温側パージ設定流量
Ｑ2 との間が連続的に変化するように設定されたパージ
設定流量とするように設定されている。このパージ流量
の設定値が、一般にシャワー等で使用する割り込み給湯
量に対する給湯性能を基準として設定されているため、
割り込み給湯量が設定流量よりも少ない場合には、前記
熱交換器等の湯路からの高温湯の排出が遅れ、設定時間
経過後に残った高温湯が一般給湯路に供給される場合が
あり、また、一般給湯路への割り込み給湯量が多い場合
には、給湯開始時に、前記高温給湯路への通流量が設定
条件に維持されるため、前記湯路内の高温湯が一般給湯
路側に多量に流れるおそれがある。つまり、何れの場合
にも、一般給湯路に高温の湯水が供給されるおそれがあ
ったのである。In the above-described conventional configuration, the hot water supply after being heated by the heat exchanger 2 is maintained by keeping the high-temperature hot water supply intermittent valve 21 open even after the switching of the operation state. Is distributed not only to the general hot water supply path 4 but also to the high-temperature hot water supply path 6 so that the hot water supply flow rate of the general hot water supply path 4 and the high-temperature hot water supply path 6 can be distributed. The temperature was adjusted by the water supply temperature of the water, and was adjusted irrespective of the flow rate to the general hot water supply channel 4. The amount of hot water flowing through the high-temperature hot water supply passage 6, that is, the purge flow rate, is, for example, as shown in FIG. 7, when the temperature of water supplied from the water supply passage 1 detected by the water supply thermistor 12 is lower than a specific temperature on the low temperature side. In this case, a constant low-temperature-side purge set flow rate is set, and the purge flow rate is maintained at the low-temperature-side purge set flow rate Q1 in this water supply temperature range. The high-temperature side purge set flow rate Q2, which is larger than the set flow rate Q1, is set, and the purge flow rate is maintained at the high-temperature side purge set flow rate Q2 in this water supply temperature range. The purge set flow rate is set so as to continuously change with the side purge set flow rate Q2. Since the set value of the purge flow rate is set based on the hot water supply performance for the interrupted hot water supply amount generally used in a shower or the like,
When the interrupted hot water supply amount is smaller than the set flow rate, the discharge of the hot water from the hot water path of the heat exchanger or the like is delayed, and the hot water remaining after the lapse of the set time may be supplied to the general hot water path, In addition, when the amount of interrupted hot water supply to the general hot water supply path is large, the flow rate to the high-temperature hot water supply path is maintained at the set condition at the start of hot water supply, so that a large amount of high-temperature hot water May flow to That is, in any case, there is a risk that hot water is supplied to the general hot water supply path.
【０００６】そこで、本発明に係る給湯装置の目的は、
割り込み給湯量の多少に関わらず一般給湯路への高温湯
の供給を抑制して、割り込み使用時の使用感を改善する
点にある。Therefore, the purpose of the hot water supply device according to the present invention is to
The point is to suppress the supply of high-temperature hot water to the general hot water supply path regardless of the amount of interrupted hot water supply, thereby improving the usability at the time of interrupt use.
【０００７】[0007]
【課題を解決するための手段】本発明に係る給湯装置
は、給水路を通して供給される水をバーナの燃焼により
加熱して一般給湯路より給湯する水加熱用の熱交換器
と、前記給水路を通して供給される水を前記熱交換器を
迂回して前記一般給湯路に供給するバイパス路と、前記
一般給湯路における前記バイパス路の接続箇所よりも上
流側に分岐接続されて、前記バーナにて加熱された湯水
を高温給湯負荷に供給する高温給湯路と、前記高温給湯
路における湯水の通流を断続する高温給湯断続弁と、給
湯運転を制御する制御手段とが設けられ、前記制御手段
が、前記高温給湯断続弁を閉弁して一般給湯用の目標温
度にて前記一般給湯路を通して給湯するように給湯運転
を制御する一般給湯制御、前記高温給湯断続弁を開弁し
て高温給湯用の目標温度にて前記高温給湯路を通して給
湯するように給湯運転を制御する高温給湯制御、及び、
給湯割り込み制御を実行するように構成され、前記給湯
割り込み制御においては、前記高温給湯制御を実行して
いるときに一般給湯の割り込みが指令されると、一般給
湯用の目標温度にて前記一般給湯路を通して給湯するよ
うに給湯運転を制御する運転状態に切り換え、且つ、そ
の切り換えよりも遅延させて前記高温給湯断続弁を閉弁
させるように構成されている給湯装置において、前記給
湯割り込み制御下で高温給湯路を通流する湯水の流量
を、給水路を通して供給される給水の水温と、一般給湯
路を通流する湯水の流量とに対応して調節する点に特徴
を有するものであり、夫々に以下のような特徴を備える
ものである。A hot water supply apparatus according to the present invention comprises a heat exchanger for heating water supplied from a general hot water supply path by heating water supplied through a water supply path by burning a burner, and the water supply path. A bypass that supplies water supplied through the heat exchanger to the general hot water supply path, and a branch connection upstream of a connection point of the bypass path in the general hot water supply path. A high-temperature hot water supply path for supplying heated hot water to the high-temperature hot water supply load, a high-temperature hot water supply on-off valve for interrupting the flow of hot water in the high-temperature hot water supply path, and control means for controlling hot water supply operation are provided. A general hot water supply control for closing the high-temperature hot water supply intermittent valve and controlling a hot water supply operation to supply water through the general hot water supply path at a target temperature for general hot water supply; Target temperature Hot water heating control for controlling the hot-water supply operation to the hot water through the hot water heating passage at, and,
The hot water supply interrupt control is configured to be performed. In the hot water supply interrupt control, when an interrupt of general hot water supply is instructed while the high-temperature hot water supply control is being executed, the general hot water supply is performed at a target temperature for general hot water supply. A hot water supply apparatus configured to switch to an operation state in which a hot water supply operation is controlled to supply hot water through a road, and to close the high-temperature hot water supply intermittent valve with a delay from the switching, under the hot water supply interruption control; The method is characterized in that the flow rate of hot water flowing through the high-temperature hot water supply path is adjusted in accordance with the temperature of feed water supplied through the water supply path and the flow rate of hot water flowing through the general hot water supply path. Are provided with the following features.
【０００８】請求項１に記載の給湯装置によれば、高温
給湯路を通流する湯水の流量を調節する高温給湯量調節
手段が前記高温給湯路に設けられ、制御手段が、給湯割
り込み制御において、前記高温給湯路の湯水の流量を、
給水路を通して供給される水の温度が高いときの方が低
いときより多く、且つ、前記一般給湯路を通流する湯水
の割り込み給湯量が多いときの方が少ないときより多く
なるように、前記高温給湯量調節手段を作動させるよう
に構成されている。すなわち、前記高温給湯量調節手段
の作動により、前記給水路を通して供給される水の温度
の影響を抑制し、同時に、前記一般給湯路への割り込み
給湯量が多い場合には前記高温給湯路を通流する湯水の
流量を増加して、熱交換器やその近傍の湯路内の高温湯
の高温給湯路への排出を促進し、一般給湯路への割り込
み給湯の温度の急上昇を抑制することができるようにな
っている。According to the first aspect of the present invention, a high-temperature hot water supply amount adjusting means for adjusting a flow rate of hot water flowing through the high-temperature hot water supply path is provided in the high-temperature hot water supply path. , The hot water flow rate of the hot water supply path,
The temperature is higher when the temperature of the water supplied through the water supply channel is higher than when the temperature is low, and is higher when the interrupted hot water supply amount of the hot water flowing through the general hot water supply channel is higher than when it is lower. It is configured to operate the hot water supply amount adjusting means. That is, by operating the high-temperature hot water supply amount adjusting means, the effect of the temperature of water supplied through the water supply passage is suppressed, and at the same time, when the interrupted hot water supply amount to the general hot water supply passage is large, the high-temperature hot water supply passage is controlled. By increasing the flow rate of flowing hot and cold water, it is possible to promote the discharge of high-temperature hot water in the heat exchanger and the nearby hot water path to the high-temperature hot water supply path, and to suppress the rapid rise in the temperature of the interrupted hot water supply to the general hot water supply path. I can do it.
【０００９】請求項２に記載の給湯装置によれば、上記
請求項１に記載の給湯装置の制御手段が、給湯割り込み
制御において、給水路を通して供給される水の温度が高
いときほど多く、且つ、一般給湯路を通流する湯水の割
り込み給湯量が多いほど多くなるように、高温給湯路の
流量を無段階で調節すべく高温給湯量調節手段を作動さ
せるように構成されている。すなわち、前記高温給湯路
を通流する湯水の流量を無段階に変化させることによ
り、前記一般給湯路への割り込み給湯量の変化に応じて
前記高温給湯路への高温湯の排出量を調節でき、割り込
み給湯の際の一般給湯路に供給される湯水の温度を安定
させることができるようになっている。According to the second aspect of the present invention, in the hot water supply interruption control, the control means of the hot water supply apparatus according to the first aspect increases as the temperature of the water supplied through the water supply passage increases, and The hot water supply amount adjusting means is operated to adjust the flow rate of the hot water supply passage in a stepless manner so that the larger the interrupted water supply amount of the hot water flowing through the general hot water supply passage is, the larger the interruption water supply amount becomes. That is, by changing the flow rate of the hot water flowing through the high-temperature hot water supply path in a stepless manner, the discharge amount of the high-temperature hot water to the high-temperature hot water supply path can be adjusted according to the change in the interrupted hot water supply amount to the general hot water supply path. In addition, the temperature of hot water supplied to the general hot water supply path at the time of interrupted hot water supply can be stabilized.
【００１０】請求項３に記載の給湯装置によれば、請求
項１または２に記載の給湯装置の制御手段が、熱交換器
出口の湯水の温度が一般給湯制御において設定される目
標温度を含む終了設定温度範囲に下降するに伴って、高
温給湯路に設けられた高温給湯断続弁を閉弁させるよう
に構成されている。すなわち、前記一般給湯路に供給さ
れる湯水の温度が前記一般給湯制御における目標温度に
近付くまで前記高温給湯路への高温湯の通流を維持し、
前記一般給湯路に割り込み給湯される湯水の温度が上昇
することを防止できるようになっている。[0010] According to the third aspect of the present invention, the control means of the hot water supply apparatus according to the first or second aspect includes the target temperature at which the temperature of the hot water at the heat exchanger outlet is set in the general hot water supply control. As the temperature falls to the end set temperature range, the high-temperature hot-water supply on-off valve provided in the high-temperature hot-water supply path is closed. That is, the flow of high-temperature hot water to the high-temperature hot water supply path is maintained until the temperature of hot water supplied to the general hot water supply path approaches the target temperature in the general hot water supply control,
It is possible to prevent the temperature of the hot water that is interrupted and supplied to the general hot water supply passage from rising.
【００１１】請求項４に記載の給湯装置によれば、請求
項１〜３のいずれかにおいて、前記高温給湯路に、開閉
並びに開度調整自在な調整弁が設けられ、この調整弁に
て、前記高温給湯断続弁及び前記高温給湯量調節手段が
構成され、その調整弁が、ステッピングモータにて開閉
並びに開度調整操作されるように構成されている。すな
わち、一般給湯制御、高温給湯制御、及び、給湯割り込
み制御の夫々において、高温給湯路の湯水通流の断続の
ために調整弁が開閉操作され、高温給湯路を通流する湯
水の流量の調節のために調整弁の開度が調整されること
になる。そして、その調整弁の開閉並びに開度調整操作
が、ステッピングモータにて、高速に且つ的確に行われ
るものとなり、特に給湯割り込み制御においても、高温
給湯路を通流する湯水を流量調節することを、高速且つ
的確に行えるものとなり、一般給湯路への割り込み給湯
の温度の急上昇を抑制することを適切に行い易いものと
なる。説明を加えると、調整弁の開閉並びに開度調整操
作を行うにあたり、調整弁を開閉操作する直流式の電動
モータを設けて、調整弁の開度をポテンショメータなど
の開度検出用センサにて検出しながら、調整弁が目標開
度になるように電動モータを駆動させるようにする、い
わゆるフィードバック制御により電動モータを作動させ
る構成を採用することが考えられるが、ステッピングモ
ータは目標回転量を駆動パルス数にて指令して駆動する
ものであるから、上記のフィードバック制御により駆動
される電動モータに較べて、高速で且つ的確に調整弁の
開閉操作並びに開度調整操作を行うことができるもので
あり、一般給湯路への割り込み給湯の温度の急上昇を抑
制することを適切に行い易いものとなるのである。According to a fourth aspect of the present invention, there is provided the hot water supply apparatus according to any one of the first to third aspects, wherein the high-temperature hot water supply path is provided with an adjusting valve capable of opening and closing and adjusting the opening degree. The high-temperature hot-water supply intermittent valve and the high-temperature hot-water supply amount adjusting means are configured, and the adjustment valve is configured to be opened and closed and the opening degree is adjusted by a stepping motor. That is, in each of the general hot water supply control, the high temperature hot water supply control, and the hot water supply interrupt control, the regulating valve is opened and closed to interrupt the flow of hot and cold water in the high temperature hot water supply path, and the flow rate of hot water flowing through the high temperature hot water supply path is adjusted. Therefore, the opening of the regulating valve is adjusted. Then, the opening and closing of the adjusting valve and the opening degree adjusting operation are performed at high speed and accurately by the stepping motor. Particularly in the hot water supply interrupt control, the flow rate of the hot water flowing through the high-temperature hot water supply path is adjusted. This can be performed quickly and accurately, and it is easy to appropriately suppress the rapid rise in the temperature of the interrupted hot water supply to the general hot water supply path. In addition, when opening and closing the adjustment valve and adjusting the opening, a DC electric motor that opens and closes the adjustment valve is provided, and the opening of the adjustment valve is detected by an opening detection sensor such as a potentiometer. Meanwhile, it is conceivable to adopt a configuration in which the electric motor is driven by so-called feedback control in which the electric motor is driven so that the adjustment valve reaches the target opening degree. Since it is driven by a command in a number, the opening and closing operation and the opening degree adjustment operation of the adjustment valve can be performed at a higher speed and more accurately than the electric motor driven by the above feedback control. In addition, it is easy to appropriately suppress a rapid rise in the temperature of the interrupted hot water supply to the general hot water supply path.
【００１２】[0012]
【発明の実施の形態】以下、本発明に係る給湯装置に関
する実施の形態の一例ついて図面を参照しながら説明す
る。尚、従来の技術の説明に用いた図６に記載の要素と
同じ機能、或いは同等の機能を有する要素には、同じ符
号或いは関連する符号を付して、重複する説明の一部を
省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of an embodiment of a water heater according to the present invention will be described with reference to the drawings. Elements having the same or similar functions as the elements shown in FIG. 6 used in the description of the related art are denoted by the same reference numerals or related reference numerals, and a part of the redundant description will be omitted. .
【００１３】この給湯装置は、図１に示すように、給水
路１を通して供給される水を加熱して一般給湯路４より
給湯する給湯部Ａと、この給湯部Ａの給湯運転を制御す
る制御手段１０を構成する給湯制御部１１と、この給湯
制御部１１に運転動作を指令するメインリモコンＲ１及
び風呂リモコンＲ２を備えて構成されている。As shown in FIG. 1, this hot water supply apparatus heats water supplied through a water supply passage 1 and supplies hot water from a general hot water supply passage 4, and a control for controlling a hot water supply operation of the hot water supply unit A. The hot water supply control unit 11 constituting the means 10 is provided with a main remote control R1 and a bath remote control R2 for instructing the hot water supply control unit 11 to perform an operation.
【００１４】前記給湯部Ａは、前記給水路１を通して供
給される水を加熱して一般給湯路４より給湯する水加熱
用の熱交換器２と、この熱交換器２を加熱するためのガ
ス燃焼式のバーナ３等から構成され、この一般給湯路４
には、手動操作で開度を変更調節自在な給湯栓５やシャ
ワー（図示せず）などが接続される。The hot water supply section A is provided with a heat exchanger 2 for heating water supplied through the water supply passage 1 and supplying hot water from a general hot water supply passage 4, and a gas for heating the heat exchanger 2. This general hot water supply path 4 is composed of a combustion type burner 3 and the like.
Is connected to a hot water tap 5 or a shower (not shown) whose opening can be changed and adjusted by manual operation.
【００１５】また、前記給水路１を通して供給される水
を前記熱交換器２を迂回して前記一般給湯路４に供給す
るバイパス路７が設けられ、前記給水路１における給水
サーミスタ１２よりも下流側と、後述の一般給湯路４に
おける逆止弁４ａと水比例弁１５との間とが連通されて
いる。さらに、前記給水路１には、その給水路１を通し
て給水される水量を検出する水量センサ１３が設けら
れ、その水量センサ１３の下流側には前記給水サーミス
タ１２が、その水の温度を検出自在に配置されている。A bypass 7 for supplying water supplied through the water supply channel 1 to the general hot water supply channel 4 bypassing the heat exchanger 2 is provided, and is provided downstream of the water supply thermistor 12 in the water supply channel 1. The side and the check valve 4a and the water proportional valve 15 in the general hot water supply path 4 described later communicate with each other. Further, the water supply path 1 is provided with a water amount sensor 13 for detecting an amount of water supplied through the water supply path 1, and the water supply thermistor 12 is provided downstream of the water amount sensor 13 so that the temperature of the water can be detected. Are located in
【００１６】前記一般給湯路４には、前記熱交換器２に
おいてバーナ３の熱により加熱された後の湯水の温度を
検出する給湯サーミスタ１４が設けられ、その下流側
に、前記給湯栓５側への通流のみを許容するように設け
られた前記逆止弁４ａと、その開度を無段階に変更調節
することで一般給湯路４を通して給湯される給湯量を変
更調節自在な前記水比例弁１５と、前記バイパス路７か
らの水を混合した混合湯水の温度を検出するミキシング
サーミスタ１６と、一般給湯路４を通して給湯栓５側に
給湯される湯水の通流量を検出可能な割り込みセンサ１
７とが下流側に向けて順に配置されている。The general hot water supply path 4 is provided with a hot water supply thermistor 14 for detecting the temperature of hot water after being heated by the heat of the burner 3 in the heat exchanger 2. The check valve 4a provided so as to allow only the flow to the water supply port, and the water proportion which can change and adjust the amount of hot water supplied through the general hot water supply path 4 by changing the opening thereof in a stepless manner. A valve 15, a mixing thermistor 16 for detecting the temperature of the mixed hot and cold water mixed with the water from the bypass passage 7, and an interrupt sensor 1 for detecting the flow rate of hot and cold water supplied to the hot water tap 5 through the general hot water supply passage 4.
7 are arranged in order toward the downstream side.
【００１７】また、前記一般給湯路４における前記バイ
パス路７の接続箇所よりも上流側で、前記給湯サーミス
タ１４と前記逆止弁４ａとの間に、前記バーナ３にて加
熱された湯水を高温給湯負荷Ｈの一例である浴槽Ｂ内に
供給する高温給湯路６としての追い焚き路６Ａが分岐接
続され、その追い焚き路６Ａの他端は前記浴槽Ｂ内に連
通接続され、その開口部の前面には、風呂アダプタ１９
が取り付けられ、この風呂アダプタ１９の内側には、そ
の浴槽Ｂ内の湯水の温度を検出する浴槽温サーミスタ１
９ａが設けられている。前記追い焚き路６Ａには、前記
高温給湯路６における湯水の通流を断続する高温給湯断
続弁２１及び高温給湯路６を通流する湯水の流量を調節
する高温給湯量調節手段２０を兼ねる調整弁としての追
い焚き弁２０Ａが設けられ、その下流側には、下流側か
らの湯水の逆流を防止するためのバキュームブレーカ６
ａが設けられている。前記追い焚き弁２０Ａについて説
明を加えると、図４に示すように、この追い焚き弁２０
Ａは、弁体Ｍの正逆回転により、開閉並びに開度調整自
在に構成されるものであって、このように開閉並びに開
度調整できる機能を用いて、上述の如く前記高温給湯断
続弁２１及び前記高温給湯量調節手段２０を構成するよ
うにしている。そして、ケーシングＫに組み付けたステ
ッピングモータ２１Ｂにて、弁体Ｍが正逆回転操作され
て、追い焚き弁２０Ａが開閉並びに開度調整操作される
ように構成されており、さらには、追い焚き弁２０Ａの
閉じ位置、及び、最大開き位置を検出する開度検出セン
サ２１Ｃが設けられている。つまり、ステッピングモー
タ２１Ｂは、追い焚き弁２０Ａの操作量が駆動パルス数
として指令されて駆動されるものであり、具体的には、
開度位置検出センサ２１Ｃの検出情報に基づいて、追い
焚き弁２０Ａの閉じ位置や、最大開き位置が確認され
て、それらの位置から目標開度に操作するための駆動パ
ルス数が指令されて駆動されるようになっている。Further, the hot water heated by the burner 3 is heated to a high temperature between the hot water supply thermistor 14 and the check valve 4a at a position upstream of the connection point of the bypass passage 7 in the general hot water supply passage 4. A reheating path 6A as a high-temperature hot water supply path 6 to be supplied into a bathtub B, which is an example of the hot water supply load H, is branched and connected. The other end of the reheating path 6A is connected to the inside of the bathtub B, and an opening of the opening is provided. On the front is a bath adapter 19
A bathtub temperature thermistor 1 for detecting the temperature of hot water in the bathtub B is provided inside the bath adapter 19.
9a is provided. The supplementary heating path 6 </ b> A also has a high-temperature hot-water supply on-off valve 21 for interrupting the flow of hot water in the high-temperature hot-water supply path 6 and a high-temperature hot-water supply amount adjusting means 20 for adjusting the flow rate of hot water flowing through the high-temperature hot water supply path 6. A reheating valve 20A is provided as a valve, and a vacuum breaker 6 for preventing backflow of hot and cold water from the downstream side is provided downstream thereof.
a is provided. The supplementary heating valve 20A will be described below. As shown in FIG.
A is configured to be capable of opening and closing and adjusting the opening degree by forward and reverse rotation of the valve body M. The function for opening and closing and adjusting the opening degree is used as described above, and the high-temperature hot water supply intermittent valve 21 is used as described above. And the high-temperature hot water supply amount adjusting means 20 is constituted. The stepping motor 21B attached to the casing K rotates the valve body M forward and reverse to open / close and adjust the opening degree of the reheating valve 20A. An opening detection sensor 21C for detecting the closed position of 20A and the maximum open position is provided. That is, the stepping motor 21B is driven by the operation amount of the reheating valve 20A being instructed as the number of drive pulses, and specifically,
Based on the detection information of the opening position detection sensor 21C, the closing position and the maximum opening position of the additional heating valve 20A are confirmed, and the number of drive pulses for operating the target opening degree from those positions is commanded and driven. It is supposed to be.
【００１８】さらに、前記熱交換器２において加熱され
た湯水とバイパス路７からの水とを混合した混合湯水を
前記浴槽Ｂ内に供給する湯張り路８が、一般給湯路４に
おけるミキシングサーミスタ１６と割り込みセンサ１７
との間から分岐し、前記追い焚き路６Ａの一部を共用し
て、前記追い焚き路６Ａにおける追い焚き弁２０Ａとバ
キュームブレーカ６ａとの間に連通接続されている。前
記湯張り路８には、その流路を開閉する電磁式の湯張り
開閉弁１８が設けられている。Further, a hot water path 8 for supplying mixed hot water mixed with hot water heated in the heat exchanger 2 and water from the bypass path 7 into the bathtub B is provided with a mixing thermistor 16 in the general hot water supply path 4. And interrupt sensor 17
And a portion of the reheating path 6A is shared and connected between the reheating valve 20A and the vacuum breaker 6a in the reheating path 6A. The filling path 8 is provided with an electromagnetic filling valve 18 for opening and closing the flow path.
【００１９】前記バーナ３は、多段式バーナで、一般家
庭用の燃料ガスを供給するガス供給路９が三系統に分岐
して接続され、それらガス供給路９の夫々にガス切替電
磁弁２２が設けられ、それらの分岐箇所よりも上流側の
ガス供給路９に、燃料ガス供給量を調整する電磁式のガ
ス比例弁２３や、燃料ガスの供給を断続する元ガス電磁
弁２４等が設けられている。また、前記バーナ３に燃焼
用空気を供給するファンＦも設けられ、バーナ３の近く
には、バーナ３に対する点火のための点火プラグ３ａ
と、バーナ３の着火を検出するフレームロッド３ｂとが
設けられている。The burner 3 is a multi-stage burner. A gas supply path 9 for supplying fuel gas for general household is connected to three branches, and a gas switching electromagnetic valve 22 is connected to each of the gas supply paths 9. An electromagnetic gas proportional valve 23 for adjusting the fuel gas supply amount, a source gas electromagnetic valve 24 for interrupting the supply of the fuel gas, and the like are provided in the gas supply passage 9 upstream of these branch points. ing. Further, a fan F for supplying combustion air to the burner 3 is also provided. An ignition plug 3a for igniting the burner 3 is provided near the burner 3.
And a frame rod 3b for detecting the ignition of the burner 3.
【００２０】この給湯装置では、給湯制御部１１により
後述の給湯制御を実行するように構成されている。その
制御手段１０には、前記給湯制御部１１に対する制御指
令を伝達するためのメインリモコンＲ１と、風呂リモコ
ンＲ２とが無線或いは有線で接続されている。このメイ
ンリモコンＲ１は、台所などに設置され、図２（イ）に
示すように、運転の開始及び停止を指令する運転スイッ
チ２５と、浴槽Ｂへの湯張り運転を指令する湯はりスイ
ッチ２６と、一般給湯路４を通して給湯する給湯目標温
度を設定する給湯温度設定スイッチ２７と、給湯目標温
度などを表示する表示部３５などが備えられている。In this hot water supply apparatus, the hot water supply control section 11 executes a hot water supply control described later. A main remote controller R1 for transmitting a control command to the hot water supply controller 11 and a bath remote controller R2 are connected to the control means 10 wirelessly or by wire. The main remote controller R1 is installed in a kitchen or the like, and includes, as shown in FIG. 2A, an operation switch 25 for instructing start and stop of operation, and a hot-water switch 26 for instructing bathing operation to the bathtub B. A hot water supply temperature setting switch 27 for setting a hot water supply target temperature for supplying hot water through the general hot water supply passage 4 and a display unit 35 for displaying a hot water supply target temperature and the like are provided.
【００２１】また、風呂リモコンＲ２には、図２（ロ）
に示すように、運転スイッチ２８と湯はりスイッチ２９
との他に、足し湯運転を指令するたし湯スイッチ３０
と、湯張り設定温度を設定する湯張り温度設定スイッチ
３１と、浴槽Ｂ内の湯温を前記湯張り設定温度よりもぬ
るくするぬるく運転を指令するぬるくスイッチ３２と、
前記湯張り設定温度よりもあつくするあつくスイッチ３
３と、浴槽Ｂ内の湯温を前記湯張り設定温度に維持する
保温運転を指令する保温スイッチ３４と、給湯目標温度
などを表示する表示部３６などが備えられている。尚、
給湯装置が給湯中の時には、湯はりスイッチ２６，２９
やたし湯スイッチ３０などの運転を指令する各種のスイ
ッチは、指令操作を受け付けないように構成されてい
る。The bath remote controller R2 has a structure shown in FIG.
As shown in the figure, the operation switch 28 and the hot water switch 29
In addition to the above, a hot water switch 30 for instructing a hot water operation.
A filling temperature setting switch 31 for setting a filling temperature, a warming switch 32 for instructing a lubricating operation to make the temperature of the water in the bathtub B warmer than the setting temperature, and
A hot switch 3 that is hotter than the hot water setting temperature
3, a warming switch 34 for instructing a warming operation for maintaining the hot water temperature in the bathtub B at the hot water setting temperature, a display unit 36 for displaying a hot water supply target temperature and the like. still,
When the hot water supply device is supplying hot water, the hot water switch 26, 29
Various switches for commanding operation, such as the hot water switch 30, are configured not to receive command operations.
【００２２】前記制御手段１０は、追い焚き弁２０Ａを
閉弁して一般給湯用の目標温度にて前記一般給湯路４を
通して給湯するように給湯運転を制御する一般給湯制
御、前記追い焚き弁２０Ａを開弁して高温給湯用の目標
温度にて前記高温給湯路６を通して給湯するように給湯
運転を制御する高温給湯制御、及び、給湯割り込み制御
を実行するように構成されている。つまり、給湯制御部
１１は、前記追い焚き弁２０Ａを閉弁した状態で、一般
給湯路４から湯水を供給する給湯運転では一般給湯制御
を実行し、前記追い焚き弁２０Ａを開弁し、追い焚き路
６Ａから高温湯を浴槽Ｂに向けて給湯する高温給湯運転
では高温給湯制御を実行し、その高温給湯制御中に前記
一般給湯路４への給湯が割り込む割り込み給湯運転では
給湯割り込み制御を実行するのである。この給湯割り込
み制御において、前記高温給湯制御を実行しているとき
に一般給湯の割り込みが指令されると、一般給湯用の目
標温度にて前記一般給湯路４を通して給湯するように給
湯運転を制御する運転状態に切り換え、且つ、その切り
換えよりも遅延させて前記追い焚き弁２０Ａを閉弁させ
るように構成されている。The control means 10 controls the hot water supply operation such that the reheating valve 20A is closed and the hot water is supplied through the general hot water supply path 4 at the target temperature for general hot water supply. And hot water supply control for controlling hot water supply operation so as to supply hot water through the high temperature water supply passage 6 at a target temperature for high temperature water supply, and hot water supply interrupt control are executed. In other words, the hot water supply control unit 11 executes the general hot water supply control in the hot water supply operation of supplying hot water from the general hot water supply path 4 with the additional heating valve 20A closed, and opens the additional heating valve 20A to perform the additional heating. In the high-temperature hot water supply operation in which high-temperature hot water is supplied from the heating path 6A toward the bathtub B, high-temperature hot water supply control is performed. In the hot water supply control, the hot water supply to the general hot water supply path 4 is interrupted. You do it. In this hot water supply interrupt control, when an interrupt for general hot water supply is instructed while the high-temperature hot water supply control is being executed, the hot water supply operation is controlled so that hot water is supplied through the general hot water supply path 4 at a target temperature for general hot water supply. It is configured to switch to the operating state and to close the reheating valve 20A with a delay from the switching.
【００２３】前記制御手段１０を構成する給湯制御部１
１では、前記給湯割り込み制御において、前記追い焚き
弁２０Ａをステッピングモータ２１Ｂの駆動により操作
して前記追い焚き路６Ａの湯水の流量を、前記給水路１
を通して供給される水の温度と、前記一般給湯路４を通
流する湯水の割り込み給湯量との、両者に対応して調節
する。つまり、前記給水路１を通して供給される水の温
度が高いときの方が低いときより多く、且つ、前記一般
給湯路４を通流する湯水の割り込み給湯量が多いときの
方が少ないときより多くなるように、前記追い焚き弁２
０Ａの開度を無段階に調節するのである。この給湯割り
込み制御では、前記給湯サーミスタ１４により検出した
前記熱交換器２出口の湯水の温度が、終了設定温度に下
降するに伴って高温給湯を終了する。つまり、前記給湯
サーミスタ１４により検出した前記熱交換器２出口の湯
水の温度から、記制御手段１０の給湯制御部１１が、前
記一般給湯制御において設定された目標温度を含む終了
設定温度範囲に下降したことを検出すると、前記高温給
湯断続弁２１としての追い焚き弁２０Ａを閉弁させるの
である。以下、夫々の運転について説明する。Hot water supply controller 1 constituting control means 10
1, in the hot water supply interruption control, the reheating valve 20A is operated by driving a stepping motor 21B to control the flow rate of hot water in the reheating channel 6A and the water supply path 1A.
Of the hot water supplied through the general hot water supply channel 4 and the interrupted hot water supply amount. That is, when the temperature of the water supplied through the water supply channel 1 is high, it is more than when it is low, and when the amount of interrupted hot water flowing through the general hot water supply channel 4 is large, it is more than when it is small. So that the reheating valve 2
The opening of 0A is adjusted steplessly. In this hot water supply interruption control, the high-temperature hot water supply ends as the temperature of the hot water at the outlet of the heat exchanger 2 detected by the hot water supply thermistor 14 decreases to the end set temperature. That is, from the temperature of the hot water at the outlet of the heat exchanger 2 detected by the hot water supply thermistor 14, the hot water supply control unit 11 of the control unit 10 falls to the end set temperature range including the target temperature set in the general hot water supply control. When it is detected that this is done, the reheating valve 20A as the high-temperature hot water supply intermittent valve 21 is closed. Hereinafter, each operation will be described.
【００２４】前記給湯運転では、メインリモコンＲ１の
運転スイッチ２５等が操作されて、給湯可能になってい
る状態で、給湯栓５が開操作され、水量センサ１３が熱
交換器２への通水を検知すると実行され、追い焚き弁２
０Ａ及び湯張り開閉弁１８を閉じ状態に維持して、バー
ナ３により給水路１を通して供給される水の一部を加熱
しながら、加熱された湯水とバイパス路７から混合され
る水との混合湯水の温度が給湯目標温度になるようにバ
ーナ３の燃焼を制御し、一般給湯路４を通して給湯する
一般給湯制御としての給湯燃焼制御を実行する。In the hot water supply operation, when the operation switch 25 of the main remote controller R1 is operated to supply hot water, the hot water tap 5 is opened, and the water amount sensor 13 switches the water flow to the heat exchanger 2. Is executed when detecting
Mixing of the heated hot water and the water mixed from the bypass 7 while maintaining a part of the water supplied through the water supply passage 1 by the burner 3 while keeping the 0 A and the hot water on-off valve 18 closed. The combustion of the burner 3 is controlled such that the temperature of the hot water reaches the hot water supply target temperature, and hot water supply combustion control as general hot water supply control for supplying hot water through the general hot water supply path 4 is executed.
【００２５】この給湯燃焼制御においては、水量センサ
による検出水量と、給水サーミスタ１２による検出水温
と給湯温度設定スイッチ２７により設定された給湯目標
温度との比較結果とに基づいて、バーナ３により加熱さ
れた湯水とバイパス路７からの水とを混合した混合湯水
を給湯目標温度にするために必要なガス量を算出して、
ガス切替電磁弁２２とガス比例弁２３の開度を調節し、
ファンＦの回転速度を調節する。尚、通常は水比例弁１
５は最大開度の維持しておき、バーナ３に最大ガス量を
供給してもミキシングサーミスタ１６による検出温度が
給湯目標温度に達しない場合に、水比例弁１５を絞るこ
とで温度を調節する。こうして、給水路１からの水の一
部が熱交換器２で加熱された湯水と、バイパス路７から
の水とを混合して一般給湯路４に給湯するが、給湯栓５
等の閉操作に伴って、水量センサ１３が熱交換器２への
通水を検知しなくなると、ガス切替電磁弁２２、ガス比
例弁２３、元ガス電磁弁２４を夫々閉弁してバーナ３の
燃焼を停止させた後、設定時間を経過するとファンＦも
停止させて給湯運転を終了するようにしている。In this hot water supply combustion control, the burner 3 heats the water based on the water amount detected by the water amount sensor and the comparison result between the water temperature detected by the water supply thermistor 12 and the hot water supply target temperature set by the hot water temperature setting switch 27. The amount of gas required to bring the mixed hot and cold water and the water from the bypass 7 to the hot water supply target temperature is calculated,
The opening degree of the gas switching solenoid valve 22 and the gas proportional valve 23 is adjusted,
Adjust the rotation speed of the fan F. Normally, water proportional valve 1
5 maintains the maximum opening, and adjusts the temperature by narrowing the water proportional valve 15 when the temperature detected by the mixing thermistor 16 does not reach the hot water supply target temperature even when the maximum gas amount is supplied to the burner 3. . In this way, a part of the water from the water supply channel 1 is mixed with the hot water heated by the heat exchanger 2 and the water from the bypass channel 7 and supplied to the general hot water supply channel 4.
When the water amount sensor 13 stops detecting the flow of water to the heat exchanger 2 with the closing operation such as the above operation, the gas switching solenoid valve 22, the gas proportional valve 23, and the original gas solenoid valve 24 are closed, respectively, and the burner 3 is closed. After the combustion is stopped, the fan F is also stopped when the set time has elapsed, and the hot water supply operation is terminated.
【００２６】前記湯張り運転では、メインリモコンＲ１
の湯はりスイッチ２６や風呂リモコンＲ２の湯はりスイ
ッチ２９の操作による湯張り運転の指令により実行され
る。先ず、湯張り開閉弁１８を開弁させ、バーナ３によ
り加熱された湯水とバイパス路７からの水との混合湯水
の温度が湯張り設定温度になるようにバーナ３の燃焼を
制御し、湯張り路８を通して浴槽Ｂ内に湯水を供給して
湯張りするように構成されている。尚、湯張り燃焼制御
は上記給湯運転の場合と同様にして行われる。この湯張
り運転中に給湯栓５等が開操作されて、割り込みセンサ
１７が検出する割り込み給湯量が割り込み設定量以上に
なると、前記湯張り開閉弁１８を閉弁して、一旦湯張り
運転を待機させて、一般給湯割り込みを開始し、前記割
り込みセンサ１７が割り込み給湯を検知しなくなると、
湯張り運転を再開するようにしている。In the hot water filling operation, the main remote control R1
The operation is performed by a hot water operation command by operating the hot water switch 26 or the hot water switch 29 of the bath remote controller R2. First, the hot water opening / closing valve 18 is opened, and the combustion of the burner 3 is controlled so that the temperature of the hot water mixed with the hot water heated by the burner 3 and the water from the bypass 7 becomes the hot water setting temperature. Hot water is supplied into the bathtub B through the tension path 8 to fill the bathtub. The filling combustion control is performed in the same manner as in the hot water supply operation. When the hot water tap 5 or the like is opened during the hot water filling operation and the interrupted hot water supply amount detected by the interrupt sensor 17 exceeds the interrupt set amount, the hot water filling opening / closing valve 18 is closed, and the hot water filling operation is performed once. When the general hot water supply interrupt is started and the interrupt sensor 17 does not detect the interrupted hot water supply,
The hot water operation is restarted.
【００２７】前記たし湯運転は、風呂リモコンＲ２のた
し湯スイッチ３０による指令により実行される。先ず、
上記湯張り運転と同様に、湯張り開閉弁１８を開弁させ
て、バーナ３により加熱された湯水とバイパス路７から
の水との混合湯水の温度を調節しながら、湯張り路８を
通して浴槽Ｂ内に湯水を追加供給するように構成されて
いる。そして、浴槽Ｂ内に湯張り設定温度の湯水を供給
して、水量センサ１３の積算水量がたし湯用設定湯量
（例えば２０リットル）になればたし湯運転を終了する
ようにしている。このたし湯運転中に、割り込みセンサ
１７により一般給湯割り込みが検知されると、湯張り開
閉弁１８を閉弁して、一旦たし湯運転を待機させて、一
般給湯割り込みを開始し、前記割り込みセンサ１７が割
り込み給湯を検知しなくなると、たし湯運転を再開する
ようにしている。The hot water operation is executed by a command from the hot water switch 30 of the bath remote controller R2. First,
As in the case of the hot water operation, the hot water opening / closing valve 18 is opened to adjust the temperature of the hot water mixed with the hot water heated by the burner 3 and the water from the bypass passage 7, and the bathtub is passed through the hot water passage 8. It is configured to additionally supply hot and cold water into B. Then, hot water at the hot water set temperature is supplied into the bathtub B, and the hot water operation is terminated when the integrated water amount of the water amount sensor 13 reaches the set hot water amount for the hot water (for example, 20 liters). If a general hot water supply interrupt is detected by the interrupt sensor 17 during the hot water operation, the hot water opening / closing valve 18 is closed to temporarily suspend the hot water operation, and the general hot water interrupt is started. When the interrupt sensor 17 no longer detects the interrupted hot water supply, the hot water operation is restarted.
【００２８】前記ぬるく運転は、風呂リモコンＲ２のぬ
るくスイッチ３２による指令により実行される。この運
転では、湯張り開閉弁１８を開弁させ、給水路１からの
水を加熱することなく、湯張り路８を通して浴槽Ｂ内に
供給するように構成されている。つまり、バーナ３に点
火することなく、水量センサ１３の積算水量がぬるく用
設定水量（例えば１０リットル）になると、湯張り開閉
弁１８を閉弁させてぬるく運転を終了させるようにして
いる。また、このぬるく運転中に割り込みセンサ１７に
より一般給湯の割り込みが検知されると、湯張り開閉弁
１８を閉弁して、一旦ぬるく運転を待機させて、一般給
湯の割り込みを開始し、前記割り込みセンサ１７が割り
込み給湯を検知しなくなると、ぬるく運転を再開するよ
うにしている。The warm operation is executed by a command from the warm switch 32 of the bath remote controller R2. In this operation, the hot water opening / closing valve 18 is opened, and the water from the water supply passage 1 is supplied into the bathtub B through the hot water passage 8 without heating. That is, when the integrated water amount of the water amount sensor 13 reaches the set amount of warm water (for example, 10 liters) without igniting the burner 3, the hot water opening / closing valve 18 is closed to end the warm operation. Further, when the interruption of the general hot water supply is detected by the interrupt sensor 17 during the warm operation, the filling / opening valve 18 is closed to temporarily suspend the warm operation, and the interruption of the general hot water supply is started. When the sensor 17 stops detecting the interrupted hot water supply, the warm operation is restarted.
【００２９】前記保温運転は、風呂リモコンＲ２の保温
スイッチ３４による指令により実行される。この保温運
転においては、浴槽温サーミスタ１９ａの検出温度が追
い焚き開始用設定温度以下になっていると、追い焚き弁
２０Ａを開弁させて、後述の追い焚き燃焼制御処理を伴
う追い焚き運転を実行して、追い焚き目標温度の湯水を
浴槽Ｂ内に供給し、浴槽温サーミスタ１９ａの検出温度
が湯張り設定温度になると、追い焚き運転を終了するよ
うに構成されている。そして、保温スイッチ３４が操作
された後、設定時間（例えば４時間）が経過すると、保
温運転を終了するようにしている。この保温運転中に割
り込みセンサ１７により一般給湯の割り込みが検知され
ると、一般給湯の割り込みを開始すると共に、後述の給
湯割り込み制御により時間遅れを与えて追い焚き弁２０
Ａを一旦閉弁して、一時保温運転を待機させ、前記割り
込みセンサ１７が一般給湯の割り込みを検知しなくなる
と、保温運転を再開するようにしている。尚、この保温
運転中にぬるくスイッチ３２或いはあつくスイッチ３３
が操作され、ぬるく運転或いはあつく運転が指令される
と、上述のぬるく運転、或いは後述のあつく運転が優先
して実行されるようにしている。The warming operation is executed by a command from the warming switch 34 of the bath remote controller R2. In this heat retention operation, when the detected temperature of the bathtub temperature thermistor 19a is equal to or lower than the set temperature for starting reheating, the reheating valve 20A is opened to perform the reheating operation with the reheating combustion control process described later. The refueling operation is completed by supplying hot water at the reheating target temperature into the bathtub B, and when the temperature detected by the bathtub temperature thermistor 19a reaches the hot water set temperature, the reheating operation is terminated. Then, after a set time (for example, 4 hours) elapses after the heat retention switch 34 is operated, the heat retention operation is terminated. When the interruption of the general hot water supply is detected by the interruption sensor 17 during the heat retention operation, the interruption of the general hot water supply is started, and at the same time, the reheating valve 20 is given a time delay by the hot water supply interruption control described later.
A is temporarily closed to temporarily suspend the warming operation, and when the interrupt sensor 17 does not detect the interruption of the general hot water supply, the warming operation is restarted. During the warming operation, the switch 32 or the hot switch 33 is used.
Is operated, and when a warm operation or a hot operation is instructed, the above-described soft operation or hot operation described later is preferentially executed.
【００３０】前記あつく運転は、風呂リモコンＲ２のあ
つくスイッチ３３による指令により実行される。このあ
つく運転では、一般給湯路４に湯水を導くことなく、給
水路１を通して供給される水の全量をバーナ３により加
熱しながら、追い焚き弁２０Ａを開弁すると共に、水量
センサ１３及び給水サーミスタ１２の検出情報に基づい
て、熱交換器２で加熱された湯水の温度が追い焚き目標
温度になるように、バーナ３の燃焼を制御し、追い焚き
路６Ａを通して浴槽Ｂに高温の湯水を供給する高温給湯
制御である追い焚き燃焼制御を実行するようにしてい
る。即ち、水量センサ１３で検出する供給水量と給水サ
ーミスタ１２で検出する給水温度とに基づいて、熱交換
器２からの湯水の温度を追い焚き目標温度（例えば９０
℃）にするために必要なガス量を算出し、バーナ３への
ガス量とファンＦの回転速度とを調整するのである。The hot operation is executed by a command from the hot switch 33 of the bath remote controller R2. In this hot operation, the reheating valve 20A is opened while the entire amount of water supplied through the water supply channel 1 is heated by the burner 3 without introducing hot water into the general hot water supply channel 4, and the water amount sensor 13 and the water supply thermistor are opened. Based on the detection information of 12, the combustion of the burner 3 is controlled so that the temperature of the hot water heated by the heat exchanger 2 becomes the reheating target temperature, and high-temperature hot water is supplied to the bathtub B through the reheating path 6A. The reheating combustion control, which is a high-temperature hot water supply control, is executed. That is, based on the supply water amount detected by the water amount sensor 13 and the supply water temperature detected by the water supply thermistor 12, the temperature of the hot water from the heat exchanger 2 is refired (for example, 90
C) is calculated, and the amount of gas to the burner 3 and the rotation speed of the fan F are adjusted.
【００３１】以上のようにして、給水路１を通して供給
される水の全量を熱交換器２で加熱しながら、その熱交
換器２からの湯水を追い焚き路６Ａを通して浴槽Ｂ内に
供給し、浴槽温サーミスタ１９ａにより検出される浴槽
Ｂ内の湯水の温度があつく設定温度になると、追い焚き
弁２０Ａを閉弁させ、ガス切替電磁弁２２、ガス比例弁
２３、元ガス電磁弁２４を閉弁して、バーナ３の燃焼を
停止させた後、設定時間の経過を待ってファンＦの駆動
も停止さてあつく運転を終了するようにしている。この
あつく運転を実行しているときに、割り込みセンサ１７
が、割り込み設定量以上の湯水の通流量を検出すると、
ミキシングサーミスタ１６で検出する給湯温度を給湯目
標温度に維持して湯水を一般給湯路４を通して給湯する
割り込み給湯運転に切り換える給湯割り込み制御を実行
するように構成されている。As described above, while the entire amount of water supplied through the water supply channel 1 is heated by the heat exchanger 2, the hot water from the heat exchanger 2 is supplied into the bathtub B through the additional heating channel 6A. When the temperature of the hot and cold water in the bathtub B detected by the bathtub temperature thermistor 19a reaches a set temperature, the reheating valve 20A is closed, and the gas switching solenoid valve 22, the gas proportional valve 23, and the original gas solenoid valve 24 are closed. Then, after the combustion of the burner 3 is stopped, the drive of the fan F is also stopped after the elapse of the set time, and the hot operation is terminated. When performing this hot operation, the interrupt sensor 17
However, when the flow rate of hot and cold water that exceeds the interrupt set amount is detected,
The hot water supply interrupt detected by the mixing thermistor 16 is switched to an interrupted hot water supply operation in which hot water is supplied through the general hot water supply path 4 while maintaining the hot water supply temperature at the hot water supply target temperature.
【００３２】この給湯割り込み制御について具体的に説
明すると、あつく運転中に給湯栓５等が開操作されて、
割り込みセンサ１７で検出する一般給湯路４を通して給
湯される湯水の割り込み給湯量が割り込み設定量以上に
なると、追い焚き燃焼制御を停止し、一般給湯路４を通
して湯水を給湯目標温度にて給湯するように給湯運転を
制御する運転状態に切り換え、且つ、その切り換えより
も遅延させて追い焚き弁２０Ａを閉弁させるようになっ
ている。同時に、給湯制御部１１は、給水路１を通して
供給される水の給水サーミスタ１２により検出される温
度と、割り込みセンサ１７で検出される割り込み給湯量
とを基に、追い焚き路６Ａを通流する湯水の通流量を調
節する。すなわち、追い焚き路６Ａを通して供給される
高温の湯水の通流量を、前記給水路１を通して供給され
る水の温度が高いときほど多く、且つ、前記一般給湯路
４を通流する湯水の割り込み給湯量が多いほど多くなる
ように、ステッピングモータ２１Ｂにて追い焚き弁２１
Ａの開度を調節するのである。つまり、前記追い焚き弁
２０Ａは、給水サーミスタ１２により検出される給水温
度が低いほど閉じ側に、高いほど開き側に開度を調節す
ると同時に、前記割り込みセンサ１７により検出される
割り込み給湯量が少ないほど閉じ側に、多いほど開き側
に調節されるである。そして、給湯サーミスタ１４によ
り検出される熱交換器２出口の湯水の温度が、予め設定
された終了温度範囲にまで下降すれば、追い焚き弁２０
Ａが閉弁されることになる。前記終了温度範囲は、一般
給湯制御において設定される給湯目標温度を含み設定さ
れたものである。More specifically, the hot water supply interruption control will be described.
When the interrupted hot water supply amount detected through the general hot water supply path 4 detected by the interrupt sensor 17 exceeds the interrupt set amount, the reheating combustion control is stopped and hot water is supplied through the general hot water supply path 4 at the target hot water supply temperature. Then, the operation is switched to an operation state for controlling the hot water supply operation, and the reheating valve 20A is closed with a delay from the switching. At the same time, the hot water supply control unit 11 flows through the additional heating path 6 </ b> A based on the temperature detected by the water supply thermistor 12 and the interrupted hot water supply amount detected by the interrupt sensor 17. Adjust the flow rate of hot and cold water. That is, the flow rate of high-temperature hot water supplied through the reheating path 6A increases as the temperature of the water supplied through the water supply path 1 increases, and the hot water supply flowing through the general hot water supply path 4 is interrupted. The reheating valve 21 is driven by a stepping motor 21B so that the amount increases as the amount increases.
The opening of A is adjusted. In other words, the reheating valve 20A adjusts the opening degree to the closing side as the water supply temperature detected by the water supply thermistor 12 is lower, and adjusts the opening degree to the opening side as the water supply temperature is higher. The closer to the closed side, the more the open side. If the temperature of the hot water at the outlet of the heat exchanger 2 detected by the hot water supply thermistor 14 falls to a preset end temperature range, the reheating valve 20
A will be closed. The end temperature range is set including the hot water supply target temperature set in the general hot water supply control.
【００３３】上記の如く、追い焚き弁２０Ａの開度調節
により、給湯目標温度にて一般給湯路４を通して給湯す
るように給湯運転を制御する運転状態に切り換える際
に、バーナ３の発熱量を低下させた後に、熱交換器２内
に残る高温湯を、割り込み給湯で一般給湯路４に供給す
る湯水の温度に影響させないように追い焚き路６Ａから
排出させることができる。つまり、追い焚き弁２０Ａの
開度調節によって、一般給湯割り込みの際の熱交換器２
内に残留する高温湯のパージ量を変化させるのである。
説明を加えると、追い焚き弁２０Ａを開き側に調節すれ
ば、一般給湯路４に対して追い焚き路６Ａの流路抵抗が
相対的に低下して、追い焚き路６Ａに対する一般給湯路
４への湯水の分配比が低下傾向を示して高温湯のパージ
を促進し、追い焚き弁２０Ａを閉じ側に調節すれば、追
い焚き路６Ａは一般給湯路４に対して相対的に流路抵抗
が増大して、一般給湯路４への湯水の分配比が増大傾向
を示して高温湯のパージを抑制する。As described above, when the opening degree of the reheating valve 20A is adjusted, the amount of heat generated by the burner 3 is reduced when switching to the operation state in which the hot water supply operation is controlled so as to supply hot water through the general hot water supply path 4 at the hot water supply target temperature. After the heating, the high-temperature hot water remaining in the heat exchanger 2 can be discharged from the additional heating path 6A so as not to affect the temperature of the hot water supplied to the general hot water supply path 4 in the interrupted hot water supply. In other words, by adjusting the opening degree of the reheating valve 20A, the heat exchanger 2 at the time of interrupting the general hot water supply is provided.
That is, the purge amount of the high-temperature hot water remaining in the inside is changed.
In addition, if the additional heating valve 20A is adjusted to the open side, the flow path resistance of the additional heating path 6A relative to the general hot water supply path 4 is relatively decreased, and the general hot water supply path 4 for the additional heating path 6A is moved. If the distribution ratio of the hot water shows a decreasing tendency to promote the purging of the high-temperature water and adjust the reheating valve 20A to the closing side, the reheating channel 6A has a flow path resistance relatively to the general hot water supply channel 4. As a result, the distribution ratio of hot water to the general hot water supply path 4 tends to increase, and the purging of high-temperature hot water is suppressed.
【００３４】一方、熱交換器２内の高温湯の温度は、給
水サーミスタ１２で検出する給水温度が高ければ高くな
りやすく、給水温度が低ければ高くなりにくいから、上
述の分配比の変化傾向を利用して、給水温度が高い場合
には一般給湯路４への高温湯の流出を抑制するために追
い焚き路６Ａへの湯水の分配比を増加して追い焚き路６
Ａを通しての熱交換器２内に残留する高温湯のパージを
促進し、給水温度が低い場合には一般給湯路４への高温
湯の流出を幾分許容するために追い焚き路６Ａへの湯水
の分配比を低下させて追い焚き路６Ａへの高温湯のパー
ジを抑制するのである。他方、割り込みセンサ１７で検
出する一般給湯路４への割り込み給湯量が多い場合に
は、追い焚き路６Ａに対して一般給湯路４への湯水の分
配比が増大する傾向にあり、これに対抗して追い焚き路
６Ａの流路抵抗を低下させるべく、追い焚き弁２０Ａの
開度を開き側に調節して一般給湯路４への湯水の分配比
の増加を抑制して追い焚き路６Ａを通しての高温湯のパ
ージを促進し、割り込み流量が少ない場合には、一般給
湯路４への湯水の分配比が低下する傾向にあり、これに
対抗して追い焚き弁２０Ａの開度を閉じ側に調節して一
般給湯路４への湯水の分配比の低下を抑制して追い焚き
路６を通しての高温湯のパージを抑制するようにするの
である。上記したような、給水路１への給水温度と一般
給湯路４への給湯量とに応じてた、追い焚き路６Ａへの
熱交換器２内の高温湯のパージ流量の調節について一例
を示せば、図３に示すような複数のパージ流量曲線にな
る。つまり、給水温度に対して描かれるパージ流量曲線
を、割り込み給湯量の多少によりに応じて上下にシフト
させるのである。図には三本の曲線で示したが、連続的
にシフトさせることもできる。このような給湯割り込み
制御により、高温給湯路６への湯水の通流時の一般給湯
の割り込みに際して一般給湯路４に給湯される湯水の給
湯温度に対する制御のオーバーシュート・アンダーシュ
ートを抑制することが可能となる。On the other hand, the temperature of the hot water in the heat exchanger 2 tends to increase when the temperature of the supply water detected by the supply water thermistor 12 is high, and it is difficult to increase when the temperature of the supply water is low. When the supply water temperature is high, the distribution ratio of the hot water to the additional heating path 6A is increased to suppress the flow of the high-temperature hot water to the general hot water supply path 4 and the additional heating path 6 is used.
In order to facilitate the purging of the hot water remaining in the heat exchanger 2 through A and to allow the hot water to flow out to the general hot water supply channel 4 when the feed water temperature is low, the hot water , The purging of the hot water into the reheating path 6A is suppressed. On the other hand, when the interrupted hot water supply amount to the general hot water supply path 4 detected by the interrupt sensor 17 is large, the distribution ratio of the hot water to the general hot water supply path 4 with respect to the additional heating path 6A tends to increase. In order to reduce the flow path resistance of the additional heating path 6A, the opening degree of the additional heating valve 20A is adjusted to the open side to suppress an increase in the distribution ratio of hot water to the general hot water supply path 4 and through the additional heating path 6A. When the interrupt flow rate is small, the distribution ratio of hot water to the general hot water supply path 4 tends to decrease, and the opening degree of the reheating valve 20A is adjusted to the closed side. The adjustment is performed to suppress a decrease in the distribution ratio of the hot water to the general hot water supply passage 4 and to suppress the purging of the high-temperature hot water through the additional heating passage 6. An example of the adjustment of the purge flow rate of the high-temperature hot water in the heat exchanger 2 to the additional heating path 6A according to the water supply temperature to the water supply path 1 and the hot water supply amount to the general hot water supply path 4 as described above will be shown. For example, a plurality of purge flow rate curves as shown in FIG. 3 are obtained. That is, the purge flow rate curve drawn with respect to the feed water temperature is shifted up and down according to the amount of the interrupted hot water supply. Although shown with three curves in the figure, the shift can be performed continuously. With such hot water supply interruption control, it is possible to suppress overshoot and undershoot of control on the hot water supply temperature of the hot water supplied to the general hot water supply path 4 when the general hot water supply is interrupted when the hot water flows into the high-temperature hot water supply path 6. It becomes possible.
【００３５】上述のように、給水温度と割り込み給湯量
とに応じて熱交換器２内の高温湯のパージを促進したり
抑制したりすると、そのパージに要する時間が給水温度
と割り込み給湯量とに影響を受けることになるが、その
影響に関わらず、一般給湯路４への給湯温度を設定温度
に維持するために、前記パージの終了を判定して、給湯
割り込み制御を終了させるようにする。As described above, if the purging of the high-temperature hot water in the heat exchanger 2 is promoted or suppressed in accordance with the water supply temperature and the interrupted hot water supply amount, the time required for the purging is determined by the water supply temperature and the interrupted hot water supply amount. Irrespective of the influence, in order to maintain the hot water supply temperature to the general hot water supply path 4 at the set temperature, the end of the purge is determined and the hot water supply interrupt control is ended. .
【００３６】前記給湯制御部１１における給湯割り込み
制御の制御動作について、あつく運転中の割り込み給湯
の一例を図５に示す流れ図に基づいて説明する。あつく
運転を実行しているとき（ステップ＃１）に、割り込み
センサ１７によって一般給湯路４への給湯量が割り込み
設定量以上になったことが検知され、一般給湯の割り込
みが指令されると（ステップ＃２）、あつく運転におけ
る追い焚き燃焼制御を一旦停止して、給湯目標温度にて
一般給湯路４を通して給湯するように給湯運転を制御す
る運転状態に切り換える（ステップ＃３）。ここで運転
状態が切り換えられると、熱交換器２に供給する熱量を
低下させるようにバーナ３の燃焼を調節し、一般給湯路
４を通しての給湯を開始すると同時に、熱交換器２内の
高温湯の一部を追い焚き路６Ａを通してパージを継続す
る。このパージの流量は、上述の如く給水路１への給水
温度と一般給湯路４への給湯量とに応じて求められ、そ
の求めたパージ流量となるように、追い焚き弁２０Ａが
ステッピングモータ２１Ｂにて開度調整操作される。The control operation of the hot water supply interrupt control in the hot water supply control section 11 will be described with reference to a flowchart shown in FIG. When the hot operation is being performed (step # 1), the interrupt sensor 17 detects that the amount of hot water supplied to the general hot water supply path 4 has exceeded the interrupt set amount, and an interrupt for general hot water supply is issued ( In step # 2), the reheating combustion control in the hot operation is temporarily stopped, and the operation mode is switched to an operation state in which the hot water supply operation is controlled such that hot water is supplied through the general hot water supply path 4 at the hot water supply target temperature (step # 3). Here, when the operation state is switched, the combustion of the burner 3 is adjusted so as to reduce the amount of heat supplied to the heat exchanger 2 and the hot water supply through the general hot water supply path 4 is started, and at the same time, the high-temperature hot water in the heat exchanger 2 is started. Purging is continued through the reheating path 6A. The flow rate of this purge is determined according to the temperature of the water supplied to the water supply channel 1 and the amount of hot water supplied to the general hot water supply channel 4 as described above, and the reheating valve 20A is driven by the stepping motor 21B so that the obtained purge flow rate is obtained. Is operated to adjust the opening.
【００３７】その後、給湯サーミスタ１４で検出する熱
交換器２にて加熱された後の湯水の温度Ｔｏが設定温度
Ｔｓ以下にまで低下すると（ステップ＃４）、給湯割り
込み制御の終了条件が成立したと判断して、追い焚き弁
２０Ａを閉弁し（ステップ＃５）、その後は、上述の給
湯運転が実行されるが、前記給湯栓５等が操作されて、
一般給湯路４への割り込み設定値以上の給湯量が割り込
みセンサ１７で検出されなくなると、一般給湯割り込み
が終了したと判断し（ステップ＃６）、上述の手順であ
つく運転を再開する（ステップ＃７）。Thereafter, when the temperature To of the hot water after being heated by the heat exchanger 2 detected by the hot water supply thermistor 14 falls below the set temperature Ts (step # 4), the condition for ending the hot water supply interrupt control is satisfied. Then, the additional heating valve 20A is closed (step # 5), and thereafter, the above-described hot water supply operation is performed.
When the amount of hot water supplied to the general hot water supply passage 4 exceeds the set value, the interrupt sensor 17 determines that the general hot water supply interrupt has been completed (step # 6) and restarts the hot operation according to the above-described procedure (step #). 7).
【００３８】〔別実施形態〕上記実施の形態において示
さなかった本発明に係る給湯装置の他の実施の形態につ
いて以下に説明する。[Other Embodiment] Another embodiment of the hot water supply apparatus according to the present invention, which is not shown in the above embodiment, will be described below.
【００３９】〈１〉上記実施の形態に於いては、バイパ
ス路７に流量調節手段を設けていない例について説明し
たが、従来の技術の項で図６に示して説明したものと同
様に、バイパス路７に並列に配置された複数のバイパス
路３７，３８を設けて、夫々にバイパス弁７ａ，７ｂを
設け、これらの個別の開閉操作により、前記バイパス路
７を通流する水の流量を調節し、この水の一般給湯路４
に通流する湯水に対する混合比を変えることにより給湯
温度を調節できるようにしてあってもよい。このバイパ
ス路７の並列部分は、三路以上設けられていてもよい。
また、上記バイパス弁を単一にし、その開度を調節する
ようにしてもよい。このように、バイパス路７を通流す
る水の流量を調節すれば、一般給湯路４の給湯温度はさ
らに安定して調節できる。<1> In the above-described embodiment, an example in which a flow rate adjusting means is not provided in the bypass 7 has been described. However, in the same manner as that shown in FIG. A plurality of bypass passages 37, 38 arranged in parallel with the bypass passage 7 are provided, and bypass valves 7a, 7b are respectively provided. By individually opening and closing these bypass passages, the flow rate of water flowing through the bypass passage 7 is reduced. Adjust the general hot water supply path 4 for this water
The hot water supply temperature may be adjusted by changing the mixing ratio with respect to the hot and cold water flowing through the hot water. Three or more parallel portions of the bypass path 7 may be provided.
Further, the bypass valve may be made a single unit and the opening thereof may be adjusted. Thus, by adjusting the flow rate of the water flowing through the bypass 7, the hot water supply temperature of the general hot water supply path 4 can be adjusted more stably.
【００４０】〈２〉上記実施の形態においては、高温給
湯量調節手段２０として、高温給湯断続弁２１を兼用し
た追い焚き弁２０Ａを設けた例について説明したが、前
記高温給湯調節弁１９を、高温給湯断続弁２１とは別に
高温給湯路６に設けてもよく、例えば上記実施の形態に
おける追い焚き弁２０Ａとは別に、前記高温給湯路６に
高温給湯断続弁２１が設けられていてもよい。そして、
高温給湯路６の開閉は高温給湯断続弁２１により、パー
ジ流量の調節は、高温給湯量調節弁２０（上記実施の形
態においては追い焚き弁２０Ａ）によるように構成して
もよい。<2> In the above-described embodiment, an example is described in which a reheating valve 20A serving also as a high-temperature hot water supply intermittent valve 21 is provided as the high-temperature hot water supply amount adjusting means 20, but the high-temperature hot water supply control valve 19 is The high-temperature hot water supply intermittent valve 21 may be provided in the high-temperature hot water supply path 6 separately from the high-temperature hot water supply intermittent valve 21. For example, the high-temperature hot water supply path 6 may be provided in the high-temperature hot water supply path 6 separately from the reheating valve 20A in the above-described embodiment. . And
The opening and closing of the high-temperature hot water supply path 6 may be configured by the high-temperature hot water supply intermittent valve 21, and the adjustment of the purge flow rate may be configured by the high-temperature hot water supply amount adjusting valve 20 (the reheating valve 20 </ b> A in the above embodiment).
【００４１】〈３〉上記実施の形態においては、バイパ
ス路７を一般給湯路４に直接合流させた例を図示して説
明したが、前記バイパス路の一般給湯路への接続箇所に
混合弁を設けて、熱交換器で加熱された湯水と、給水路
から供給される水との混合比を調節するように構成され
ていてもよい。この混合比は、手動または自動で設定さ
れるように構成してあってもよく、また、手動または自
動で調節されるように構成してあってもよい。このよう
な混合弁を備える場合においても、課題の項で説明した
ような、熱交換器２内及びその近傍からの高温湯の一般
給湯路への一時的な過剰混入を抑制することができて、
設定された給湯温度より著しく高い温度の湯水が一般給
湯路に供給されることを防止できる。<3> In the above-described embodiment, an example in which the bypass 7 is directly joined to the general hot water supply path 4 is illustrated and described. However, a mixing valve is provided at a connection point of the bypass to the general hot water supply path. It may be configured so as to adjust the mixing ratio of hot and cold water heated by the heat exchanger and water supplied from the water supply passage. This mixing ratio may be configured to be set manually or automatically, or may be configured to be adjusted manually or automatically. Even in the case where such a mixing valve is provided, it is possible to suppress the temporary excessive mixing of high-temperature hot water from the heat exchanger 2 and its vicinity into the general hot water supply passage as described in the section of the problem. ,
Hot water having a temperature significantly higher than the set hot water supply temperature can be prevented from being supplied to the general hot water supply path.
【００４２】〈４〉上記実施の形態に於いては、給湯運
転及びあつく運転の他に、湯張り運転、ぬるく運転、た
し湯運転、保温運転を実行する給湯装置の例について説
明したが、給湯運転、あつく運転、湯張り運転のみを実
行するものなど、運転の数及び種類については適宜変更
が可能であり、給湯温度で湯水を供給する運転と、給湯
温度よりも高い温度の高温給湯温度で高温給湯を行う運
転とを実行する給湯装置であればよい。<4> In the above embodiment, an example of a hot water supply apparatus for executing a hot water supply operation, a warm operation, a hot water operation, and a warming operation in addition to the hot water supply operation and the hot water operation has been described. The number and type of operations can be changed as appropriate, such as hot water supply operation, hot water operation, and one that executes only hot water filling operation. The operation of supplying hot water at the hot water supply temperature and the hot water supply temperature higher than the hot water supply temperature And a hot water supply device that performs an operation of supplying high-temperature hot water at the same time.
【図１】本発明に係る給湯装置の一例につき説明する構
成図FIG. 1 is a configuration diagram illustrating an example of a hot water supply apparatus according to the present invention.
【図２】リモコンの例を説明する正面図FIG. 2 is a front view illustrating an example of a remote controller.
【図３】パージ流量の設定例を示す線図FIG. 3 is a diagram showing an example of setting a purge flow rate;
【図４】追い焚き弁を示す側面図FIG. 4 is a side view showing a reheating valve.
【図５】給湯割り込み制御の流れ図FIG. 5 is a flowchart of hot water supply interrupt control;
【図６】従来の給湯装置の一例を説明する構成図FIG. 6 is a configuration diagram illustrating an example of a conventional hot water supply device.
【図７】従来の給湯装置におけるパージ流量の例を示す
線図FIG. 7 is a diagram showing an example of a purge flow rate in a conventional hot water supply apparatus.
１ 給水路 ２ 熱交換器 ３ バーナ ４ 一般給湯路 ６ 高温給湯路 ７ バイパス路 １０ 制御手段 ２０ 高温給湯量調節手段 ２１ 高温給湯断続弁 ２０Ａ 調整弁 ２１Ｂ ステッピングモータ DESCRIPTION OF SYMBOLS 1 Water supply path 2 Heat exchanger 3 Burner 4 General hot water supply path 6 High temperature hot water supply path 7 Bypass path 10 Control means 20 High temperature hot water supply amount adjusting means 21 High temperature hot water supply intermittent valve 20A Adjustment valve 21B Stepping motor
Claims (4)
燃焼により加熱して一般給湯路より給湯する水加熱用の
熱交換器と、 前記給水路を通して供給される水を前記熱交換器を迂回
して前記一般給湯路に供給するバイパス路と、 前記一般給湯路における前記バイパス路の接続箇所より
も上流側に分岐接続されて、前記バーナにて加熱された
湯水を高温給湯負荷に供給する高温給湯路と、 前記高温給湯路における湯水の通流を断続する高温給湯
断続弁と、 給湯運転を制御する制御手段とが設けられ、 前記制御手段が、前記高温給湯断続弁を閉弁して一般給
湯用の目標温度にて前記一般給湯路を通して給湯するよ
うに給湯運転を制御する一般給湯制御、前記高温給湯断
続弁を開弁して高温給湯用の目標温度にて前記高温給湯
路を通して給湯するように給湯運転を制御する高温給湯
制御、及び、給湯割り込み制御を実行するように構成さ
れ、 前記給湯割り込み制御においては、前記高温給湯制御を
実行しているときに一般給湯の割り込みが指令される
と、一般給湯用の目標温度にて前記一般給湯路を通して
給湯するように給湯運転を制御する運転状態に切り換
え、且つ、その切り換えよりも遅延させて前記高温給湯
断続弁を閉弁させるように構成されている給湯装置であ
って、 前記高温給湯路を通流する湯水の流量を調節する高温給
湯量調節手段が前記高温給湯路に設けられ、 前記制御手段が、前記給湯割り込み制御において、前記
高温給湯路の湯水の流量を、前記給水路を通して供給さ
れる水の温度が高いときの方が低いときより多く、且
つ、前記一般給湯路を通流する湯水の割り込み給湯量が
多いときの方が少ないときより多くなるように、前記高
温給湯量調節手段を作動させるように構成されている給
湯装置。1. A heat exchanger for heating water supplied from a general hot water supply line by heating water supplied through a water supply line by burning a burner, and bypassing the water supplied through the water supply line to the heat exchanger. A bypass passage for supplying the general hot water supply path to the general hot water supply path; and a high-temperature supply line that is branched and connected upstream of a connection point of the bypass hot water supply path in the general hot water supply path to supply hot water heated by the burner to a high-temperature hot water supply load. A hot water supply path, a high-temperature hot-water supply on-off valve for interrupting the flow of hot water in the high-temperature hot-water supply path, and control means for controlling hot-water supply operation are provided. General hot water supply control for controlling hot water supply operation so that hot water is supplied through the general hot water supply path at the target temperature for hot water supply, opening the high-temperature hot water supply intermittent valve and supplying hot water through the high-temperature hot water supply path at the target temperature for high-temperature hot water supply. High-temperature hot-water supply control for controlling hot-water supply operation, and hot-water supply interrupt control. In the hot-water supply interrupt control, when an interrupt for general hot water supply is issued while the high-temperature hot-water supply control is being executed. A switching to an operation state in which the hot water supply operation is controlled to supply hot water through the general hot water supply path at a target temperature for general hot water supply, and to close the high-temperature hot water supply intermittent valve with a delay from the switching. High-temperature hot water supply amount adjusting means for adjusting a flow rate of hot water flowing through the high-temperature hot water supply path is provided in the high-temperature hot water supply path; and in the hot water supply interruption control, the high-temperature hot water supply means The flow rate of hot water flowing through the general hot water supply path is greater when the temperature of the water supplied through the water supply path is high than when the temperature of the water supplied through the water supply path is low. To be larger than when there are fewer when viewed hot water supply amount is large, Configured water heater to actuate the high-temperature hot water supply amount adjusting means.
において、前記給水路を通して供給される水の温度が高
いときほど多く、且つ、前記一般給湯路を通流する湯水
の割り込み給湯量が多いほど多くなるように、前記高温
給湯路の流量を無段階で調節すべく前記高温給湯量調節
手段を作動させるように構成されている請求項１記載の
給湯装置。2. In the hot water supply interruption control, the control means increases as the temperature of water supplied through the water supply passage increases, and as the interruption water supply amount of hot water flowing through the general hot water supply passage increases. 2. The hot water supply apparatus according to claim 1, wherein the hot water supply amount adjusting means is operated to adjust the flow rate of the high temperature hot water supply passage in a stepless manner so as to increase the flow rate.
水の温度が前記一般給湯制御において設定される目標温
度を含む終了設定温度範囲に下降するに伴って、前記高
温給湯断続弁を閉弁させるように構成されている請求項
１または２に記載の給湯装置。3. The high-temperature hot water supply intermittent valve is closed as the temperature of the hot water at the outlet of the heat exchanger falls to an end set temperature range including a target temperature set in the general hot water supply control. 3. The hot water supply device according to claim 1, wherein the hot water supply device is configured to be valved.
自在な調整弁が設けられ、この調整弁にて、前記高温給
湯断続弁及び前記高温給湯量調節手段が構成され、 その調整弁が、ステッピングモータにて開閉並びに開度
調整操作されるように構成されている請求項１〜３のい
ずれか１項に記載の給湯装置。4. A high-temperature hot water supply path is provided with an adjusting valve capable of opening and closing and adjusting an opening degree. The adjusting valve comprises the high-temperature hot water supply intermittent valve and the high-temperature hot water supply amount adjusting means. The hot water supply apparatus according to any one of claims 1 to 3, wherein the hot water supply apparatus is configured to be opened and closed and an opening degree is adjusted by a stepping motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001250299A JP2002357359A (en) | 2001-03-30 | 2001-08-21 | Hot-water supplying device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-98252 | 2001-03-30 | ||
| JP2001098252 | 2001-03-30 | ||
| JP2001250299A JP2002357359A (en) | 2001-03-30 | 2001-08-21 | Hot-water supplying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002357359A true JP2002357359A (en) | 2002-12-13 |
Family
ID=26612674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001250299A Pending JP2002357359A (en) | 2001-03-30 | 2001-08-21 | Hot-water supplying device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002357359A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012042091A (en) * | 2010-08-18 | 2012-03-01 | Hitachi Appliances Inc | Water heater |
| JP2016008769A (en) * | 2014-06-24 | 2016-01-18 | 株式会社ノーリツ | Water heater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989372A (en) * | 1995-09-29 | 1997-04-04 | Harman Co Ltd | Hot water heater |
| JPH09303861A (en) * | 1996-05-14 | 1997-11-28 | Harman Co Ltd | Hot water supplier |
| JPH10254551A (en) * | 1997-03-06 | 1998-09-25 | Toto Ltd | Flow rate controller and hot water supplier equipped with the flow rate controller |
| JP4392999B2 (en) * | 2001-01-12 | 2010-01-06 | 株式会社ハーマンプロ | Water heater |
-
2001
- 2001-08-21 JP JP2001250299A patent/JP2002357359A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989372A (en) * | 1995-09-29 | 1997-04-04 | Harman Co Ltd | Hot water heater |
| JPH09303861A (en) * | 1996-05-14 | 1997-11-28 | Harman Co Ltd | Hot water supplier |
| JPH10254551A (en) * | 1997-03-06 | 1998-09-25 | Toto Ltd | Flow rate controller and hot water supplier equipped with the flow rate controller |
| JP4392999B2 (en) * | 2001-01-12 | 2010-01-06 | 株式会社ハーマンプロ | Water heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012042091A (en) * | 2010-08-18 | 2012-03-01 | Hitachi Appliances Inc | Water heater |
| JP2016008769A (en) * | 2014-06-24 | 2016-01-18 | 株式会社ノーリツ | Water heater |
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