JPH10141768A - Hot water burning control method and hot water supply system - Google Patents
Hot water burning control method and hot water supply systemInfo
- Publication number
- JPH10141768A JPH10141768A JP8294867A JP29486796A JPH10141768A JP H10141768 A JPH10141768 A JP H10141768A JP 8294867 A JP8294867 A JP 8294867A JP 29486796 A JP29486796 A JP 29486796A JP H10141768 A JPH10141768 A JP H10141768A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water supply
- time
- combustion control
- feedforward
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 214
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims description 111
- 238000010079 rubber tapping Methods 0.000 claims description 45
- 239000008400 supply water Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、出湯時にフィード
フォワード給湯燃焼制御を所定時間だけ実行し、当該所
定時間経過後に当該フィードフォワード給湯燃焼制御に
加えてフィードバック燃焼制御を実行することにより湯
温変動量を最小にする給湯燃焼制御方法、およびこれを
用いた給湯器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the temperature of hot water by executing feedforward hot-water supply combustion control for a predetermined time at the time of tapping and performing feedback combustion control in addition to the feedforward hot-water supply combustion control after the predetermined time has elapsed. The present invention relates to a hot water supply combustion control method for minimizing an amount and a water heater using the same.
【０００２】[0002]
【従来の技術】従来この種の燃焼制御方法、およびこれ
を用いた給湯器においては、出湯時に、フィードフォワ
ード給湯燃焼制御を一定時間（つまり、固定時間）だけ
実行し、当該固定時間経過後に当該フィードフォワード
給湯燃焼制御に加えてフィードバック燃焼制御を実行す
ることにより湯温変動量を最小にする湯温の安定化制御
を行っていた。2. Description of the Related Art Conventionally, in this type of combustion control method and a water heater using the same, feed-forward hot water supply combustion control is executed for a fixed time (ie, a fixed time) at the time of tapping, and after the fixed time elapses, the feedforward hot water combustion control is performed. By performing feedback combustion control in addition to feedforward hot water supply combustion control, hot water temperature stabilization control that minimizes hot water temperature fluctuations has been performed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の技術では、出湯時に実行するフィードフォワ
ード給湯燃焼制御の時間は一定（つまり、固定）である
ため、当該固定時間中に湯温変動量が所定の変動範囲に
収らない内にフィードバック燃焼制御に制御が移行され
ることがあり、このために、湯温変動量が逆に大きくな
ってしまうことがあるという問題点があった。However, in such a conventional technique, since the time of the feedforward hot water supply combustion control executed at the time of tapping is fixed (that is, fixed), the hot water temperature fluctuation amount during the fixed time is controlled. The control may be shifted to the feedback combustion control before the temperature falls within the predetermined fluctuation range, and consequently, the amount of fluctuation in the hot water temperature may increase.
【０００４】本発明は、このような従来の問題点に着目
してなされたもので、出湯時の入水量、または前回の出
湯停止から再出湯までの待機時間に応じて、フィードフ
ォワード給湯燃焼制御を実行する所定時間を最適化する
とともに、所定時間経過後にフィードフォワード給湯燃
焼制御に加えてフィードバック燃焼制御を実行すること
により、広い湯温変動範囲において湯温変動量を最小に
することができる給湯燃焼制御方法、およびこれを用い
た給湯器を提供することを目的としている。[0004] The present invention has been made in view of such conventional problems, and the feed-forward hot-water supply combustion control is performed in accordance with the amount of water input at the time of tapping or the standby time from the last stop of tapping to the re- tapping. By performing the feedback combustion control in addition to the feedforward hot water supply combustion control after the lapse of the predetermined time, it is possible to minimize the amount of fluctuation in the temperature in a wide temperature fluctuation range. It is an object of the present invention to provide a combustion control method and a water heater using the same.
【０００５】[0005]
【課題を解決するための手段】かかる目的を達成するた
めの要旨とするところは、次の各項の発明に存する。The gist for achieving the above object lies in the following inventions.
【０００６】［１］ 出湯時にフィードフォワード給湯
燃焼制御を所定時間（１９ａ）だけ実行し、当該所定時
間（１９ａ）経過後に当該フィードフォワード給湯燃焼
制御に加えてフィードバック燃焼制御を実行することに
より湯温変動量（２２ａ）を最小にする給湯燃焼制御方
法において、前記出湯時の入水量（１２ｂ）、または前
回の出湯停止から再出湯までの待機時間（１６ａ）に応
じて、前記フィードフォワード給湯燃焼制御を実行する
前記所定時間（１９ａ）を可変にする、ことを特徴とす
る給湯燃焼制御方法。[1] The feed-forward hot-water supply combustion control is performed for a predetermined time (19a) at the time of tapping, and after the predetermined time (19a) elapses, the feedback combustion control is executed in addition to the feed-forward hot-water supply combustion control to thereby control the hot water temperature. In the hot water supply combustion control method for minimizing the fluctuation amount (22a), the feedforward hot water supply combustion control is performed according to the water input amount at the time of tapping (12b) or the standby time (16a) from the previous stoppage of tapping to re-watering. The hot water supply combustion control method, wherein the predetermined time (19a) for performing the step (a) is variable.
【０００７】［２］ 前記出湯時の給湯運転データ（１
２ａ）として、入水温、前記入水量（１２ｂ）、または
前記給湯設定温度（１２ｃ）を求める給湯運転計測手段
（１２）と、前記待機時間（１６ａ）を求める待機時間
計測手段（１６）と、前記出湯時に、前記給湯運転デー
タ（１２ａ）に基づいて前記湯温変動量（２２ａ）を最
小にするためのフィードフォワード燃焼補正ガス量（２
０ａ）を求めるフィードフォワードガス量算出手段（２
０）と、前記出湯時の入水量（１２ｂ）、または前回の
出湯停止から再出湯までの待機時間（１６ａ）に応じ
て、前記所定時間（１９ａ）を求めるフィードフォワー
ド燃焼時間算出手段（１９）と、を備えて成ることを特
徴とする［１］項に記載の給湯燃焼制御方法を用いた給
湯器（１０）。[2] Hot water supply operation data at the time of tapping (1)
2a) hot water supply operation measuring means (12) for obtaining the incoming water temperature, the incoming water amount (12b), or the hot water supply set temperature (12c); standby time measuring means (16) for obtaining the standby time (16a); At the time of tapping, the feedforward combustion correction gas amount (2) for minimizing the hot water temperature fluctuation amount (22a) based on the hot water supply operation data (12a).
0a) for calculating the feedforward gas amount (2)
0) and the feed-in combustion amount calculating means (19) for obtaining the predetermined time (19a) according to the water input amount at the time of tapping (12b) or the standby time (16a) from the previous stop of hot tapping to the re-starting. A water heater (10) using the hot water combustion control method according to the item [1], comprising:
【０００８】本発明は次のように作用する。本発明にお
ける給湯燃焼制御方法、およびこれを用いた給湯器（１
０）は、出湯時にフィードフォワード給湯燃焼制御を所
定時間（１９ａ）だけ実行し、所定時間（１９ａ）経過
後にフィードフォワード給湯燃焼制御に加えてフィード
バック燃焼制御を実行することにより湯温変動量（２２
ａ）を最小にするものであって、出湯時の入水量（１２
ｂ）、または前回の出湯停止から再出湯までの待機時間
（１６ａ）に応じて、フィードフォワード給湯燃焼制御
を実行する所定時間（１９ａ）を可変にすることができ
る。これにより、広い湯温変動範囲において湯温変動量
（２２ａ）を最小にすることができる。The present invention operates as follows. Hot water supply combustion control method according to the present invention, and water heater using the same (1)
0) executes feedforward hot water supply combustion control for a predetermined time (19a) at the time of tapping, and executes feedback combustion control in addition to the feedforward hot water supply combustion control after the predetermined time (19a) elapses, thereby changing the hot water temperature fluctuation amount (22).
a) is minimized, and the amount of water input at the time of tapping (12
The predetermined time (19a) for executing the feedforward hot water supply combustion control can be made variable in accordance with b) or the standby time (16a) from the last stop of hot water supply to the second hot water supply. Thereby, the hot water temperature fluctuation amount (22a) can be minimized in a wide hot water temperature fluctuation range.
【０００９】更に詳しく本発明の作用について説明す
る。給湯運転計測手段（１２）は、出湯時の給湯運転デ
ータ（１２ａ）として、入水温、入水量（１２ｂ）、ま
たは給湯設定温度（１２ｃ）を求めることができる。The operation of the present invention will be described in more detail. The hot water supply operation measuring means (12) can determine the incoming water temperature, the incoming water amount (12b), or the set hot water supply temperature (12c) as the hot water supply operation data (12a) at the time of hot water supply.
【００１０】待機時間計測手段（１６）は、前回の出湯
停止から再出湯までの待機時間（１６ａ）を計測する。The standby time measuring means (16) measures a standby time (16a) from the last stop of hot water supply to the second hot water supply.
【００１１】フィードフォワードガス量算出手段（２
０）は、出湯時に、給湯運転データ（１２ａ）に基づい
て湯温変動量（２２ａ）を最小にするためのフィードフ
ォワード燃焼補正ガス量（２０ａ）を求めることができ
る。The feedforward gas amount calculating means (2)
0) can determine the feedforward combustion correction gas amount (20a) for minimizing the hot water temperature fluctuation amount (22a) based on the hot water supply operation data (12a) at the time of tapping.
【００１２】フィードフォワード燃焼時間算出手段（１
９）は、出湯時の入水量（１２ｂ）、または前回の出湯
停止から再出湯までの待機時間（１６ａ）に応じて、所
定時間（１９ａ）を求めることができる。The feedforward combustion time calculating means (1)
In 9), the predetermined time (19a) can be obtained according to the water input amount at the time of tapping (12b) or the standby time (16a) from the last stop of tapping to the tapping again.
【００１３】フィードフォワード燃焼制御手段（２２）
は、出湯時に、フィードフォワード燃焼補正ガス量（２
０ａ）を所定時間（１９ａ）だけ供給して湯温変動量
（２２ａ）を最小にするフィードフォワード給湯燃焼制
御を実行することができる。[0013] Feed forward combustion control means (22)
Is the feedforward combustion correction gas amount (2
0a) is supplied for a predetermined time (19a) to perform feedforward hot water supply combustion control that minimizes the hot water temperature fluctuation amount (22a).
【００１４】以上説明したように本発明の給湯燃焼制御
方法、およびこれを用いた給湯器（１０）によれば、出
湯時の入水量（１２ｂ）、または前回の出湯停止から再
出湯までの待機時間（１６ａ）に応じて、フィードフォ
ワード給湯燃焼制御を実行する所定時間（１９ａ）を最
適化するとともに、所定時間（１９ａ）経過後にフィー
ドフォワード給湯燃焼制御に加えてフィードバック燃焼
制御を実行することにより、広い湯温変動範囲において
湯温変動量（２２ａ）を最小にすることができる。As described above, according to the hot water supply combustion control method of the present invention and the water heater (10) using the same, the amount of water input at the time of hot water supply (12b) or the standby from the last stop of hot water supply to the second hot water supply. By optimizing the predetermined time (19a) for executing the feedforward hot water supply combustion control according to the time (16a), and executing the feedback combustion control in addition to the feedforward hot water supply combustion control after the predetermined time (19a) has elapsed. In addition, the hot water temperature fluctuation amount (22a) can be minimized in a wide hot water temperature fluctuation range.
【００１５】[0015]
【発明の実施の形態】以下、図面に基づき本発明の一実
施例を説明する。図１は本発明の一実施例にかかる給湯
器１０の構成を示すブロック図である。図２は本発明の
一実施例にかかる給湯器１０の燃焼制御方法において、
再出湯時に、待機時間１６ａが短い場合の湯温変動量２
２ａ、および湯温の立ち下がり特性と立ち上がり特性の
関係を示すグラフである。図３は本発明の一実施例にか
かる給湯器１０の燃焼制御方法において、再出湯時に、
待機時間１６ａが長い場合の湯温変動量２２ａを示すグ
ラフである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a water heater 10 according to one embodiment of the present invention. FIG. 2 shows a combustion control method for the water heater 10 according to one embodiment of the present invention.
Hot water temperature fluctuation amount 2 when standby time 16a is short at the time of re-hot water supply
2a and a graph showing the relationship between the falling characteristic and the rising characteristic of the hot water temperature. FIG. 3 shows a method for controlling the combustion of the water heater 10 according to one embodiment of the present invention.
It is a graph which shows hot water temperature fluctuation amount 22a when standby time 16a is long.
【００１６】本実施例の給湯器１０は、出湯時の入水量
１２ｂ、または前回の出湯停止から再出湯までの待機時
間１６ａに応じて、フィードフォワード給湯燃焼制御を
実行する所定時間１９ａを変更し、当該変更した所定時
間１９ａだけフィードフォワード給湯燃焼制御を実行
し、所定時間１９ａ経過後にフィードフォワード燃焼補
正ガス量２０ａが所定の範囲（図２に示す△ＧＦ）に達
した後は、当該フィードフォワード給湯燃焼制御に加え
てフィードバック燃焼制御を実行することにより湯温変
動量２２ａを最小にするものであって、図１に示すよう
に、給湯運転計測手段１２と待機時間計測手段１６とフ
ィードフォワード燃焼時間算出手段１９とフィードフォ
ワードガス量算出手段２０とフィードフォワード燃焼制
御手段２２とが装置されて成る。The water heater 10 of the present embodiment changes the predetermined time 19a for executing the feedforward hot water supply combustion control according to the water input amount 12b at the time of tapping or the standby time 16a from the previous stoppage of tapping to re-starting tapping. The feedforward hot water supply combustion control is executed for the changed predetermined time 19a, and after the feedforward combustion correction gas amount 20a reaches a predetermined range (範 囲 GF shown in FIG. 2) after the predetermined time 19a has elapsed, the feedforward hot water supply combustion control is performed. By performing feedback combustion control in addition to hot water supply combustion control, the hot water temperature fluctuation amount 22a is minimized. As shown in FIG. 1, hot water supply operation measurement means 12, standby time measurement means 16, feed forward combustion The time calculating means 19, the feedforward gas amount calculating means 20 and the feedforward combustion controlling means 22 are provided by an apparatus. Made is.
【００１７】更に詳しく本実施例の構成について説明す
る。給湯運転計測手段１２は、出湯時の給湯運転データ
１２ａとして、入水温、入水量１２ｂ、または給湯設定
温度１２ｃを求めるよう、フィードフォワード燃焼時間
算出手段１９とフィードフォワードガス量算出手段２０
とに接続されて成る。The configuration of this embodiment will be described in more detail. The hot water supply operation measuring means 12 feeds the feedforward combustion time calculating means 19 and the feedforward gas amount calculating means 20 so as to obtain the incoming water temperature, the incoming water amount 12b, or the set hot water supply temperature 12c as the hot water supply operation data 12a at the time of hot water supply.
And connected to.
【００１８】入水温の検出は熱電対・サーミスタ等の温
度検出手段によって実現できる。入水量１２ｂの検出
は、フローセンサ等を用いて実現できる。The detection of the incoming water temperature can be realized by a temperature detecting means such as a thermocouple or a thermistor. The detection of the water input amount 12b can be realized using a flow sensor or the like.
【００１９】待機時間計測手段１６は、前回の出湯停止
から再出湯までの待機時間１６ａを求めるよう、フィー
ドフォワードガス量算出手段２０に接続されて成る。待
機時間計測手段１６は、水栓の開閉に伴う入水量１２ｂ
フローセンサ等によって検出することによって実現でき
る。The standby time measuring means 16 is connected to the feedforward gas amount calculating means 20 so as to obtain a standby time 16a from the last stop of hot water supply to the second hot water supply. The standby time measuring means 16 is provided with a water input amount 12b accompanying opening and closing of the faucet.
This can be realized by detecting with a flow sensor or the like.
【００２０】フィードフォワードガス量算出手段２０
は、出湯時に、給湯運転データ１２ａに基づいて湯温変
動量２２ａを最小にするためのフィードフォワード燃焼
補正ガス量２０ａを求めるよう、給湯運転計測手段１２
とフィードフォワード燃焼制御手段２２とに接続されて
成る。Feedforward gas amount calculating means 20
The hot water supply operation measuring means 12 calculates a feedforward combustion correction gas amount 20a for minimizing the hot water temperature fluctuation amount 22a based on the hot water supply operation data 12a at the time of hot water supply.
And feed forward combustion control means 22.
【００２１】フィードフォワード燃焼時間算出手段１９
は、出湯時の入水量１２ｂ、または前回の出湯停止から
再出湯までの待機時間１６ａに応じて、所定時間１９ａ
を求めるよう、給湯運転計測手段１２と待機時間計測手
段１６とフィードフォワード燃焼制御手段２２とに接続
されて成る。Feedforward combustion time calculating means 19
Is a predetermined time 19a according to a water input amount 12b at the time of tapping or a standby time 16a from a previous stop of tapping to a re-start.
Is connected to the hot water supply operation measuring means 12, the standby time measuring means 16, and the feedforward combustion control means 22.
【００２２】フィードフォワード燃焼制御手段２２は、
出湯時に、フィードフォワード燃焼補正ガス量２０ａを
所定時間１９ａだけ供給して湯温変動量２２ａを最小に
するフィードフォワード給湯燃焼制御を実行するよう、
フィードフォワード燃焼時間算出手段１９とフィードフ
ォワードガス量算出手段２０と給湯器の燃焼制御部（図
示せず）に接続されて成る。The feed forward combustion control means 22
At the time of hot water supply, feed-forward combustion correction gas amount 20a is supplied for a predetermined time 19a, and feed-forward hot water supply combustion control for minimizing hot water temperature fluctuation amount 22a is executed.
The feedforward combustion time calculation means 19, the feedforward gas amount calculation means 20, and the combustion control unit (not shown) of the water heater are connected.
【００２３】本実施例の給湯器１０の作用を説明する。
本実施例における給湯燃焼制御方法、およびこれを用い
た給湯器１０は、出湯時にフィードフォワード給湯燃焼
制御を所定時間１９ａだけ実行し、所定時間１９ａ経過
後にフィードフォワード給湯燃焼制御に加えてフィード
バック燃焼制御を実行することにより湯温変動量２２ａ
を最小にするものであって、出湯時の入水量１２ｂ、ま
たは前回の出湯停止から再出湯までの待機時間１６ａに
応じて、フィードフォワード給湯燃焼制御を実行する所
定時間１９ａを可変にすることができる。The operation of the water heater 10 of this embodiment will be described.
The hot water supply combustion control method and the water heater 10 using the same in this embodiment execute feedforward hot water supply combustion control for a predetermined time 19a at the time of tapping, and perform feedback combustion control in addition to feedforward hot water supply combustion control after the predetermined time 19a has elapsed. Is performed, the hot water temperature fluctuation amount 22a
And the predetermined time 19a for executing the feed forward hot water supply combustion control can be made variable in accordance with the water input amount 12b at the time of tapping or the standby time 16a from the previous stoppage of tapping to the restart of tapping. it can.
【００２４】これにより、広い湯温変動範囲において湯
温変動量２２ａを最小にすることができる。Thus, the hot water temperature fluctuation amount 22a can be minimized in a wide hot water temperature fluctuation range.
【００２５】さらに、本実施例の給湯器１０は、所定時
間１９ａ経過後にフィードフォワード燃焼補正ガス量２
０ａが所定の範囲（図２に示す△ＧＦ）に達した後は、
当該フィードフォワード給湯燃焼制御に加えてフィード
バック燃焼制御を実行することができる。Further, the water heater 10 according to the present embodiment is configured such that the feedforward combustion correction gas amount 2
After 0a reaches a predetermined range (ΔGF shown in FIG. 2),
Feedback combustion control can be executed in addition to the feedforward hot water supply combustion control.
【００２６】更に詳しく本実施例の作用について説明す
る。給湯運転計測手段１２は、出湯時の給湯運転データ
１２ａとして、入水温、入水量１２ｂ、または給湯設定
温度１２ｃを求めることができる。なお、入水量１２
ｂ、入水温、待機時間１６ａはそれぞれメモリに一旦記
憶されてもよい。The operation of this embodiment will be described in more detail. The hot water supply operation measuring means 12 can obtain the incoming water temperature, the incoming water amount 12b, or the set hot water supply temperature 12c as the hot water supply operation data 12a at the time of hot water supply. In addition, water input 12
b, the incoming water temperature, and the standby time 16a may be temporarily stored in the memory, respectively.
【００２７】待機時間計測手段１６は、前回の出湯停止
後、すなわち給湯栓が閉められてフローセンサ（流量セ
ンサ）がオフしたときから、給湯栓が開けられてフロー
センサ（流量センサ）がオンする再出湯までの待機時間
１６ａを計測する。The standby time measuring means 16 opens the hot water tap and turns on the flow sensor (flow rate sensor) after the previous stop of hot water supply, that is, when the hot water tap is closed and the flow sensor (flow rate sensor) is turned off. The standby time 16a before the hot water is again measured.
【００２８】フィードフォワードガス量算出手段２０
は、出湯時に、給湯運転データ１２ａに基づいて湯温変
動量２２ａを最小にするためのフィードフォワード燃焼
補正ガス量２０ａを求めることができる。Feedforward gas amount calculating means 20
Can determine the feedforward combustion correction gas amount 20a for minimizing the hot water temperature fluctuation amount 22a based on the hot water supply operation data 12a at the time of hot water supply.
【００２９】フィードフォワード燃焼時間算出手段１９
は、出湯時の入水量１２ｂ、または前回の出湯停止から
再出湯までの待機時間１６ａに応じて、所定時間１９ａ
を求めることができる。Feed forward combustion time calculating means 19
Is a predetermined time 19a according to a water input amount 12b at the time of tapping or a standby time 16a from a previous stop of tapping to a re-start.
Can be requested.
【００３０】入水量１２ｂは、給湯栓が開けられてフロ
ーセンサ（流量センサ）からの信号が加えられたとき、
給湯運転計測手段１２を動作させてフローセンサ（流量
センサ）からの信号を測定し、これを流量換算して検出
される。The amount of incoming water 12b is calculated as follows when a hot water tap is opened and a signal from a flow sensor (flow rate sensor) is applied.
The hot water supply operation measuring means 12 is operated to measure a signal from the flow sensor (flow rate sensor), which is converted into a flow rate and detected.
【００３１】また、入水温等の給湯運転データ１２ａも
給湯運転計測手段１２によってを検出される。The hot water supply operation data 12a such as the incoming water temperature is also detected by the hot water supply operation measuring means 12.
【００３２】所定時間１９ａとは、フィードフォワード
給湯燃焼制御を開始してから、フィードフォワード燃焼
補正ガス量２０ａが所定の範囲（図２に示す△ＧＦ）に
達するまでの時間である。The predetermined time 19a is the time from the start of the feedforward hot water supply combustion control until the feedforward combustion correction gas amount 20a reaches a predetermined range (ΔGF shown in FIG. 2).
【００３３】所定の範囲とは、図２に示す△ＧＦであっ
て、フィードフォワード量２０ａに対する割合のことで
ある。The predetermined range is ΔGF shown in FIG. 2 and is a ratio to the feedforward amount 20a.
【００３４】フィードフォワード燃焼補正ガス量２０ａ
が目標ガス量ＧＦに対してＧＦ士△ＧＦの範囲内に達し
た後は、フィードフォワード給湯燃焼制御に加えてフィ
ードバック燃焼制御が実行される。Feed forward combustion correction gas amount 20a
Reaches the target gas amount GF, the feedback combustion control is executed in addition to the feedforward hot water supply combustion control.
【００３５】具体的には、図２に示すような、再出湯時
に、待機時間１６ａが短い場合、フィードフォワード燃
焼補正ガス量２０ａが目標ガス量ＧＦに対してＧＦ十△
ＧＦの範囲内に達した後は、フィードフォワード給湯燃
焼制御に加えてフィードバック燃焼制御が実行される。More specifically, as shown in FIG. 2, when the standby time 16a is short at the time of hot water re-discharge, the feedforward combustion correction gas amount 20a becomes GF more than the target gas amount GF.
After reaching the range of GF, feedback combustion control is executed in addition to feedforward hot water supply combustion control.
【００３６】図３に示すような、再出湯時に、待機時間
１６ａが長い場合、フィードフォワード燃焼補正ガス量
２０ａが目標ガス量ＧＦに対してＧＦ−△ＧＦの範囲内
に達した後は、フィードフォワード給湯燃焼制御に加え
てフィードバック燃焼制御が実行される。As shown in FIG. 3, when the standby time 16a is long at the time of re-hot water supply, after the feedforward combustion correction gas amount 20a has reached the range of GF-ΔGF with respect to the target gas amount GF, the feed is stopped. Feedback combustion control is executed in addition to forward hot water supply combustion control.
【００３７】本実施例では、標準的な△ＧＦを０．０５
ＧＦとしている。この値は、入水温、入水量１２ｂ、お
よび給湯設定温度１２ｃ等の給湯運転データ１２ａ、出
湯湯量によって設定される。本実施例では、△ＧＦを０
≦△ＧＦ≦０．１の間において可変設定可能としてい
る。In this example, the standard ΔGF was 0.05
GF. This value is set based on hot water supply operation data 12a such as incoming water temperature, incoming water amount 12b, and hot water supply set temperature 12c, and outgoing hot water amount. In the present embodiment, ΔGF is set to 0
It can be set variably between ≤ △ GF≤0.1.
【００３８】フィードフォワード燃焼制御手段２２は、
出湯時に、フィードフォワード燃焼補正ガス量２０ａを
所定時間１９ａだけ供給して湯温変動量２２ａを最小に
するフィードフォワード給湯燃焼制御を実行することが
できる。The feedforward combustion control means 22
At the time of tapping, it is possible to execute feedforward hot-water supply combustion control in which the feedforward combustion correction gas amount 20a is supplied for a predetermined time 19a and the hot water temperature fluctuation amount 22a is minimized.
【００３９】フィードフォワード燃焼制御手段２２は、
湯温変動量２２ａを最小にするのに必要なガス量として
のフィードフォワード燃焼補正ガス量２０ａに基づい
て、湯温上昇の遅れ分を最小にするのに必要なガス量と
しての遅れ時間ガス補償量を算出し、フィードフォワー
ド燃焼補正ガス量２０ａに遅れ時間ガス補償量を加えた
ものを新たにフィードフォワード燃焼補正ガス量２０ａ
としてガス比例弁駆動部に加えることができる。The feedforward combustion control means 22 comprises:
Delay time gas compensation as a gas amount necessary for minimizing the delay of the hot water temperature rise based on the feedforward combustion correction gas amount 20a as a gas amount necessary for minimizing the hot water temperature fluctuation amount 22a. Calculate the feedforward combustion correction gas amount 20a and add the delay time gas compensation amount to the feedforward combustion correction gas amount 20a.
Can be added to the gas proportional valve drive.
【００４０】以上説明したように本実施例の給湯燃焼制
御方法、およびこれを用いた給湯器１０によれば、出湯
時の入水量１２ｂ、または前回の出湯停止から再出湯ま
での待機時間１６ａに応じて、フィードフォワード給湯
燃焼制御を実行する所定時間１９ａを最適化するととも
に、所定時間１９ａ経過後にフィードフォワード給湯燃
焼制御に加えてフィードバック燃焼制御を実行すること
により、広い湯温変動範囲において湯温変動量２２ａを
最小にすることができる。As described above, according to the hot water supply combustion control method of the present embodiment and the water heater 10 using the same, the water supply amount 12b at the time of tapping or the standby time 16a from the previous stoppage of tapping to the re-starting of tapping water is taken. Accordingly, by optimizing the predetermined time 19a during which the feedforward hot water supply combustion control is executed, and performing the feedback combustion control in addition to the feedforward hot water supply combustion control after the predetermined time 19a has elapsed, the hot water temperature can be varied over a wide range of hot water temperature fluctuation. The variation 22a can be minimized.
【００４１】なお、入水量は器具（給湯器）の入水量、
熱交換器の入水量等に特に限定されることはない。ま
た、フローセンサ等の入水量を直接検出するもののほ
か、演算等による値を入水量としてもよい。The amount of water input is the amount of water input by the appliance (water heater),
There is no particular limitation on the amount of water entering the heat exchanger. In addition to a flow sensor or the like that directly detects the amount of incoming water, a value obtained by calculation or the like may be used as the amount of incoming water.
【００４２】[0042]
【発明の効果】本発明にかかる給湯器およびこれを用い
た燃焼制御方法によれば、出湯時の入水量、または前回
の出湯停止から再出湯までの待機時間に応じて、フィー
ドフォワード給湯燃焼制御を実行する所定時間を最適化
するとともに、所定時間経過後にフィードフォワード給
湯燃焼制御に加えてフィードバック燃焼制御を実行する
ことにより、広い湯温変動範囲において湯温変動量を最
小にすることができる。According to the water heater and the combustion control method using the same according to the present invention, feed-forward hot water supply combustion control is performed in accordance with the amount of water supplied at the time of tapping or the standby time from the last stoppage of tapping to re-starting tapping. Is optimized and the feedback combustion control is executed in addition to the feedforward hot water supply combustion control after the elapse of the predetermined time, thereby making it possible to minimize the hot water temperature fluctuation amount in a wide range of hot water temperature fluctuation.
【図１】本発明の一実施例にかかる給湯器の構成を示す
ブロック図である。FIG. 1 is a block diagram showing a configuration of a water heater according to one embodiment of the present invention.
【図２】本発明の一実施例にかかる給湯器の燃焼制御方
法において、待機時間が短い場合の出湯温の変化、およ
び湯温の立ち下がり特性と立ち上がり特性の関係を示す
グラフである。FIG. 2 is a graph showing a change in tapping temperature when a standby time is short and a relationship between a falling characteristic and a rising characteristic of the hot water in the combustion control method for a water heater according to one embodiment of the present invention.
【図３】本発明の一実施例にかかる給湯器の燃焼制御方
法において、再出湯時で、待機時間が短い場合の出湯温
の変化を示すグラフである。FIG. 3 is a graph showing a change in tapping temperature when the standby time is short at the time of tapping again in the combustion control method for a water heater according to one embodiment of the present invention.
１０…給湯器 １２…給湯運転計測手段 １２ａ…給湯運転データ １２ｂ…入水量 １２ｃ…給湯設定温度 １６…待機時間計測手段 １６ａ…待機時間 １９…フィードフォワード燃焼時間算出手段 １９ａ…所定時間 ２０…フィードフォワードガス量算出手段 ２０ａ…フィードフォワード燃焼補正ガス量 ２２…フィードフォワード燃焼制御手段 ２２ａ…湯温変動量 DESCRIPTION OF SYMBOLS 10 ... Hot water supply device 12 ... Hot water supply operation measuring means 12a ... Hot water supply operation data 12b ... Water input amount 12c ... Hot water supply set temperature 16 ... Standing time measuring means 16a ... Standing time 19 ... Feed forward combustion time calculating means 19a ... Predetermined time 20 ... Feed forward Gas amount calculating means 20a: feed forward combustion correction gas amount 22: feed forward combustion control means 22a: hot water temperature fluctuation amount
Claims (2)
を所定時間だけ実行し、当該所定時間経過後に当該フィ
ードフォワード給湯燃焼制御に加えてフィードバック燃
焼制御を実行することにより湯温変動量を最小にする給
湯燃焼制御方法において、 前記出湯時の入水量、または前回の出湯停止から再出湯
までの待機時間に応じて、前記フィードフォワード給湯
燃焼制御を実行する前記所定時間を可変にする、ことを
特徴とする給湯燃焼制御方法。1. A hot-water supply system in which feed-forward hot-water supply combustion control is performed for a predetermined time at the time of tapping, and after the predetermined time has elapsed, feedback combustion control is executed in addition to the feed-forward hot-water supply combustion control, thereby minimizing the amount of fluctuation in hot water temperature. In the combustion control method, the predetermined time for performing the feedforward hot-water supply combustion control is made variable according to a water input amount at the time of tapping or a standby time from a previous stoppage of tapping to re-starting tapping. Hot water supply combustion control method.
温、前記入水量、または前記給湯設定温度を求める給湯
運転計測手段と、 前記待機時間を求める待機時間計測手段と、 前記出湯時に、前記給湯運転データに基づいて前記湯温
変動量を最小にするためのフィードフォワード燃焼補正
ガス量を求めるフィードフォワードガス量算出手段と、 前記出湯時の入水量、または前回の出湯停止から再出湯
までの待機時間に応じて、前記所定時間を求めるフィー
ドフォワード燃焼時間算出手段と、 前記出湯時に、前記フィードフォワード燃焼補正ガス量
を前記の所定時間だけ供給して前記湯温変動量を最小に
する前記フィードフォワード給湯燃焼制御を実行するフ
ィードフォワード燃焼制御手段と、を備えて成ることを
特徴とする請求項１に記載の給湯燃焼制御方法を用いた
給湯器。2. The hot water supply operation data at the time of hot water supply, the hot water supply operation measuring means for obtaining the incoming water temperature, the incoming water amount, or the hot water supply set temperature; the standby time measuring means for obtaining the standby time; Feedforward gas amount calculating means for obtaining a feedforward combustion correction gas amount for minimizing the hot water temperature fluctuation amount based on the hot water supply operation data; and Feedforward combustion time calculating means for determining the predetermined time in accordance with a standby time; and supplying the feedforward combustion correction gas amount for the predetermined time during the tapping to minimize the hot water temperature fluctuation. The feed forward combustion control means for performing forward hot water supply combustion control is provided. A water heater using a hot water combustion control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29486796A JP3922749B2 (en) | 1996-11-07 | 1996-11-07 | Hot water combustion control method and hot water heater using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29486796A JP3922749B2 (en) | 1996-11-07 | 1996-11-07 | Hot water combustion control method and hot water heater using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10141768A true JPH10141768A (en) | 1998-05-29 |
| JP3922749B2 JP3922749B2 (en) | 2007-05-30 |
Family
ID=17813283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29486796A Expired - Fee Related JP3922749B2 (en) | 1996-11-07 | 1996-11-07 | Hot water combustion control method and hot water heater using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3922749B2 (en) |
-
1996
- 1996-11-07 JP JP29486796A patent/JP3922749B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3922749B2 (en) | 2007-05-30 |
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