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JP3579513B2 - Combustion equipment - Google Patents
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JP3579513B2 - Combustion equipment - Google Patents

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JP3579513B2
JP3579513B2 JP18011395A JP18011395A JP3579513B2 JP 3579513 B2 JP3579513 B2 JP 3579513B2 JP 18011395 A JP18011395 A JP 18011395A JP 18011395 A JP18011395 A JP 18011395A JP 3579513 B2 JP3579513 B2 JP 3579513B2
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Prior art keywords
combustion
feedforward
combustion surface
gas
correction
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JPH0933038A (en
Inventor
享 和泉沢
久恭 渡辺
喜久雄 岡本
修一 小野寺
雅 石本
清一 森
均 林
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株式会社ガスター
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Description

【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燃焼ガス量と補正値とに基づいて算出した補正ガスを燃焼させる際に、複数の燃焼面の中から所要の面数の燃焼面を選択的に切替えるとともに、当該選択燃焼面上で当該補正ガスを燃焼させて給湯の出湯温の変動を最適化するフィードフォワード給湯燃焼制御を実行する燃焼装置に関する。
【0002】
【従来の技術】
従来この種の燃焼装置は、出湯時に、フィードフォワード燃焼ガス量と補正値とに基づいて算出した補正ガスを燃焼させる際に、複数の燃焼面(例えば、燃焼面がA燃焼面とB燃焼面とC燃焼面とから構成されている)の中から所要の面数の燃焼面を選択的に切替えるとともに、当該選択燃焼面上で当該補正ガスを燃焼させて給湯の出湯温の変動を最適化するフィードフォワード給湯燃焼制御を実行していた。
【0003】
燃焼面の切替えを伴わないフィードフォワード給湯燃焼制御においては、例えば、図5(a)に示すように、A燃焼面とB燃焼面とを選択燃焼面(以降、A+B燃焼面と表現する)とし、補正ガスの燃焼中は、燃焼面の切替えを実行せずに、同一の選択燃焼面(つまり、A+B燃焼面)上で補正ガスを燃焼(以降、A+B面燃焼と表現する)させてフィードフォワード給湯燃焼制御を実行していた。
【0004】
また、燃焼面の切替えを伴うフィードフォワード給湯燃焼制御においては、例えば、図5(c)に示すように、出湯当初は、A燃焼面とB燃焼面とC燃焼面とから成るA+B+C燃焼面を選択燃焼面とするフィードフォワード給湯燃焼制御(つまり、A+B+C面燃焼によるフィードフォワード給湯燃焼制御)を実行し、補正ガスが所定のガス量(つまり、燃焼面切替ライン)に達したときに、燃焼面の切替えを実行してA+B燃焼面を選択燃焼面とするフィードフォワード給湯燃焼制御(つまり、A+B面燃焼によるフィードフォワード給湯燃焼制御)を実行していた。
【0005】
【発明が解決しようとする課題】
しかしながら、従来技術の燃焼装置では、燃焼面の切替えを伴わないフィードフォワード給湯燃焼制御においては給湯の出湯温の変動を最適化することができるもの(図5(b)参照)、燃焼面の切替えを伴うフィードフォワード給湯燃焼制御においては燃焼面の切替えによる出湯温の変動が燃焼面切替ライン付近で発生するため(図5(d)参照)、給湯の出湯温の変動を最適化することが難しく、湯の使用者に不快感を与えるという問題点があった。
【0006】
本発明は、このような従来の技術が有する問題点に着目してなされたもので、給湯の出湯温の変動を最適化して快適に湯の使用を行える燃焼装置を提供することを目的としている。
【0007】
【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本発明の要旨とするところは、次の各項の発明に存する。
【0008】
[1]出湯時に、フィードフォワード燃焼ガス量(24)と補正値(26)とに基づいて算出した補正ガス(20)を燃焼させる際に、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えるとともに、当該選択的に切替えられた選択燃焼面(13)上で当該補正ガス(20)を燃焼させて給湯の出湯温(14)の変動を最適化するフィードフォワード給湯燃焼制御(15)を実行する燃焼装置(10)において、
前記補正ガス(20)を燃焼させる際に、前記フィードフォワード燃焼ガス量(24)に基づいて算出した前記補正ガス(20a)、および当該フィードフォワード燃焼ガス量(24)と前記補正値(26)との積に基づいて算出した前記補正ガス(20b)に応じて、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替え、当該選択燃焼面(13)上で当該補正ガス(20)を燃焼させて前記フィードフォワード給湯燃焼制御(15)を実行するものであって、
前記補正ガス(20)を燃焼させる際に、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えるための燃焼面選択切替手段(16)を備えて成り、
前記燃焼面選択切替手段(16)は、
前記フィードフォワード燃焼ガス量(24)に基づいて算出した前記補正ガス(20a)、および当該フィードフォワード燃焼ガス量(24)と前記補正値(26)との積に基づいて算出した前記補正ガス(20b)を同一の前記選択燃焼面(13)を用いて供給可能な場合に、当該同一の選択燃焼面(13)上で前記フィードフォワード給湯燃焼制御(15)を実行し、
前記フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な選択燃焼面(13)と当該フィードフォワード燃焼ガス量(24)と補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な選択燃焼面(13)とを異なる選択燃焼面(13)を用いて供給する必要がある場合であって、さらにフィードフォワード給湯燃焼制御(15)を満足させる最低限の補正ガス(20c)を供給可能な選択燃焼面(13)とフィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な選択燃焼面(13)が同一のときに、当該選択燃焼面(13)で燃焼可能な最大の補正ガス量を所定時間だけ供給して前記フィードフォワード燃焼制御(15)を実行し、
前記フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な前記選択燃焼面(13)と、当該フィードフォワード燃焼ガス量(24)と補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な前記選択燃焼面(13)とを異なる前記選択燃焼面(13)を用いて供給する必要がある場合であっても燃焼面(12)を切替えることなく、前記フィードフォワード給湯燃焼制御(15)を満足させるための前記補正ガス(20c)を供給可能な前記選択燃焼面(13)と前記フィードフォワード燃焼ガス量(24)と補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な前記選択燃焼面(13)とが同一のときに、当該フィードフォワード燃焼ガス量(24)と補正値(26)の積に基づいて算出した補正ガス(20b)を当該選択燃焼面(13)に供給して前記フィードフォワード給湯燃焼制御(15)を実行し、当該補正ガス(20)が所定のガス量に達したとき、前記フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な前記選択燃焼面(13)に前記燃焼面(12)を切替えるとともに、当該選択燃焼面(13)に当該補正ガス(20)を供給して前記フィードフォワード給湯燃焼制御(15)を実行する、
ことを特徴とする燃焼装置(10)。
【0009】
[2]出湯時に、フィードフォワード燃焼ガス量(24)と補正値(26)とに基づいて算出した補正ガス(20)を燃焼させる際に、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えるとともに、当該選択的に切替えられた選択燃焼面(13)上で当該補正ガス(20)を燃焼させて給湯の出湯温(14)の変動を最適化するフィードフォワード給湯燃焼制御(15)を実行する燃焼装置(10)において、
前記補正ガス(20)を燃焼させる際に、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えるための燃焼面選択切替手段(16)と、
当該選択的に切替えられた選択燃焼面(13)、または当該選択燃焼面(13)上で前記フィードフォワード給湯燃焼制御(15)を実行したときに発生する保有熱量(30a)を記憶可能な選択燃焼面記憶手段(30)と、
を備えて成り、
前記燃焼面選択切替手段(16)は、
前記フィードフォワード燃焼ガス量(24)に基づいて算出した前記補正ガス(20a)、および当該前記フィードフォワード燃焼ガス量(24)と前記補正値(26)との積に基づいて算出した前記補正ガス(20b)を同一の前記選択燃焼面(13)を用いて供給可能な場合に、当該同一の選択燃焼面(13)上で前記フィードフォワード給湯燃焼制御(15)を実行し、
前記フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な前記選択燃焼面(13)と、当該フィードフォワード燃焼ガス量(24)と補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な前記選択燃焼面(13)とを異なる前記選択燃焼面(13)を用いて供給する必要がある場合に、前記選択燃焼面記憶手段(30)に記憶された前回の前記選択燃焼面(13)並びに前記保有熱量(30a)に基づいて、次回の前記フィードフォワード給湯燃焼制御(15)に用いる前記選択燃焼面(13)の選択的な切替えを実行し、
さらに、前記燃焼面選択切替手段(16)は、
前記選択燃焼面記憶手段(30)に記憶された前記前回の保有熱量(30a)が所定熱量(30b)以上のときは、前記次回の選択燃焼面(13)の選択面数を前記前回の選択燃焼面(13)の選択面数より所定面数だけ少ない前記選択燃焼面(13)を用いて前記次回のフィードフォワード給湯燃焼制御(15)を実行し、
前記選択燃焼面記憶手段に記憶された前記前回の保有熱量(30a)が所定熱量(30b)未満のときは、前記次回の選択燃焼面(13)の選択面数を前記前回の選択燃焼面(13)の選択面数より所定面数だけ多い前記選択燃焼面(13)を用いて前記次回のフィードフォワード給湯燃焼制御(15)を実行する、
ことを特徴とする燃焼装置(10)。
【0010】
前記本発明は次のように作用する。
始めに第一の発明における燃焼装置(10)の作用を説明する。
【0011】
第一の発明における燃焼装置(10)は、出湯時に、フィードフォワード燃焼ガス量(24)と補正値(26)とに基づいて算出した補正ガス(20)を燃焼させる際に、フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)、および当該フィードフォワード燃焼ガス量(24)と補正値(26)との積に基づいて算出した補正ガス(20b)に応じて、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えるとともに、当該選択燃焼面(13)上で当該補正ガス(20)を燃焼させて給湯の出湯温(14)の変動を最適化するフィードフォワード給湯燃焼制御(15)を実行することができる。
【0012】
更に詳しく第一の発明の作用について説明する。
【0013】
燃焼面選択切替手段(16)は、補正ガス(20)を燃焼させる際に、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えることができるものであって、さらに、以下の[選択切替動作1]〜[選択切替動作3]に説明する動作を実行することができる。
【0014】
[選択切替動作1] フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)、および当該フィードフォワード燃焼ガス量(24)と補正値(26)との積に基づいて算出した補正ガス(20b)を同一の選択燃焼面(13)を用いて供給可能な場合。
【0015】
燃焼面選択切替手段(16)は、このときの同一の選択燃焼面(13)上でフィードフォワード給湯燃焼制御(15)を実行する。
【0016】
[選択切替動作2] フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な選択燃焼面(13)と当該フィードフォワード燃焼ガス量(24)および補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な選択燃焼面(13)とを異なる選択燃焼面(13)を用いて供給する必要がある場合であって、さらにフィードフォワード給湯燃焼制御(15)を満足させる最低限のガス量を備えた補正ガス(20c)を供給可能な選択燃焼面(13)とフィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な選択燃焼面(13)とが同一のとき。
【0017】
燃焼面選択切替手段(16)は、このときの選択燃焼面(13)で燃焼可能な最大の補正ガス量(24a)を所定時間だけ供給してフィードフォワード給湯燃焼制御(15)を実行する。
【0018】
[選択切替動作3] フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な選択燃焼面(13)と当該フィードフォワード燃焼ガス量(24)および補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な選択燃焼面(13)とを異なる選択燃焼面(13)を用いて供給する必要がある場合であって、さらにフィードフォワード給湯燃焼制御(15)を満足させる最低限の補正ガス(20c)を供給可能な選択燃焼面(13)とフィードフォワード燃焼ガス量(24)および補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な選択燃焼面(13)とが同一のとき。
【0019】
燃焼面選択切替手段(16)は、このときのフィードフォワード燃焼ガス量(24)および補正値(26)の積に基づいて算出した補正ガス(20b)を当該選択燃焼面(13)に供給してフィードフォワード給湯燃焼制御(15)を実行し、当該補正ガス(20)が所定のガス量に達したとき、フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な選択燃焼面(13)に燃焼面(12)を切替えるとともに、当該選択燃焼面(13)に当該補正ガス(20)を供給してフィードフォワード給湯燃焼制御(15)を実行する。
【0020】
以上説明したように第一の発明の燃焼装置(10)によれば、給湯の出湯温(14)の変動を最適化して快適な湯の使用ができる。
【0021】
次に第二の発明における燃焼装置(10)の作用を説明する。
第二の発明における燃焼装置(10)は、出湯時に、フィードフォワード燃焼ガス量(24)と補正値(26)とに基づいて算出した補正ガス(20)を燃焼させる際に、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えるとともに、当該選択燃焼面(13)上で当該補正ガス(20)を燃焼させて給湯の出湯温(14)の変動を最適化するフィードフォワード給湯燃焼制御(15)を実行するものである。
【0022】
さらに、第二の発明における燃焼装置(10)は、以下の[選択切替動作4]〜[選択切替動作5]に説明する動作を実行することができる。
【0023】
[選択切替動作4] フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)、および当該フィードフォワード燃焼ガス量(24)と補正値(26)との積に基づいて算出した補正ガス(20b)を同一の選択燃焼面(13)を用いて供給可能な場合。
【0024】
第二の発明における燃焼装置(10)は、このときの同一の選択燃焼面(13)上でフィードフォワード給湯燃焼制御(15)を実行する。
【0025】
[選択切替動作5] フィードフォワード燃焼ガス量(24)に基づいて算出した補正ガス(20a)を供給可能な選択燃焼面(13)と当該フィードフォワード燃焼ガス量(24)および補正値(26)の積に基づいて算出した補正ガス(20b)を供給可能な選択燃焼面(13)とを異なる選択燃焼面(13)を用いて供給する必要がある場合。
【0026】
第二の発明における燃焼装置(10)は、このときに選択燃焼面記憶手段(30)に記憶された前回の選択燃焼面(13)ならびに保有熱量(30a)に基づいて、次回のフィードフォワード給湯燃焼制御(15)に用いる選択燃焼面(13)の選択的な切替えを実行する。
【0027】
更に詳しく第二の発明の作用について説明する。
選択燃焼面記憶手段(30)は、選択的に切替えられた選択燃焼面(13)、または当該選択燃焼面(13)上でフィードフォワード給湯燃焼制御(15)を実行したときに発生する保有熱量(30a)を記憶可能である。
【0028】
燃焼面選択切替手段(16)は、このときの補正ガス(20)を燃焼させる際に、複数の燃焼面(12)の中から所要の面数の燃焼面(12)を選択的に切替えることが可能である。
【0029】
さらに、燃焼面選択切替手段(16)は、以下の[選択切替動作6]〜[選択切替動作7]に説明する動作を実行することができる。
【0030】
[選択切替動作6] 選択燃焼面記憶手段(30)に記憶された前回の保有熱量(30a)が所定熱量(30b)以上のとき。
【0031】
燃焼面選択切替手段(16)は、このときの次回の選択燃焼面(13)の選択面数を前回の選択燃焼面(13)の選択面数より所定面数だけ少ない選択燃焼面(13)を用いて次回のフィードフォワード給湯燃焼制御(15)を実行する。
【0032】
[選択切替動作7] 選択燃焼面記憶手段(30)に記憶された前回の保有熱量(30a)が所定熱量(30b)未満のとき。
【0033】
燃焼面選択切替手段(16)は、このときの次回の選択燃焼面(13)の選択面数を前回の選択燃焼面(13)の選択面数より所定面数だけ多い選択燃焼面(13)を用いて次回のフィードフォワード給湯燃焼制御(15)を実行する。
【0034】
以上説明したように第二の発明の燃焼装置(10)によれば、給湯の出湯温(14)の変動を最適化して快適な湯の使用ができる。
【0035】
【発明の実施の形態】
以下、図面に基づき第一の発明の一実施の形態を説明する。図1は第一の発明の一実施の形態にかかる燃焼装置10を示す機能ブロック図である。
本実施の形態の燃焼装置10は、図2に示すように、出湯時に、フィードフォワード燃焼ガス量(F/Fと呼ぶ)24と補正値(αと呼ぶ)26とに基づいて算出した補正ガス20を燃焼させる際に、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替えるとともに、選択燃焼面13上で補正ガス20を燃焼させて給湯の出湯温14の変動を最適化するフィードフォワード給湯燃焼制御(F/F給湯燃焼制御と呼ぶ)15を実行するものである。
【0036】
さらに、本実施の形態の燃焼装置10は、補正ガス20を燃焼させる際に、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した前記補正ガス20a、およびフィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(則ち、F/F・α、ただし・は積演算記号)に基づいて算出した前記補正ガス20bに応じて、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替え、選択燃焼面13上で補正ガス20を燃焼させてフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行するものであって、燃焼面選択切替手段16を備えて成る。
【0037】
燃焼面選択切替手段16は、補正ガス20を燃焼させる際に、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替えるものである。本実施の形態の燃焼面12は、A燃焼面、B燃焼面、C燃焼面の3つ(則ち、面数=3)の燃焼面12から構成されている。
【0038】
A燃焼面、B燃焼面、C燃焼面は、各々独立して補正ガス20を燃焼(則ち、A面燃焼、B面燃焼、C面燃焼)させることもできるし、選択的に切替えられた所要の面数の燃焼面12(則ち、A燃焼面+B燃焼面、A燃焼面+C燃焼面、C燃焼面+B燃焼面、A燃焼面+B燃焼面+C燃焼面)を複合させて補正ガス20を燃焼(則ち、A+B面燃焼、A+C面燃焼、C+B面燃焼、A+B+C面燃焼)させることもできるものである。
【0039】
燃焼面切替ラインとは、補正ガス20の燃焼の途中で、異なる燃焼面12に選択的に切替えた後、補正ガス20の燃焼を続行する際の補正ガス20の量のことである。
【0040】
例えば、図3(a)〜(c)に示すように、A燃焼面+B燃焼面+C燃焼面を用いた補正ガス20の燃焼(則ち、A+B+C面燃焼)の途中で、異なる燃焼面12(則ち、A燃焼面+B燃焼面)に選択的に切替えた後、補正ガス20の燃焼(則ち、A+B面燃焼)を続行する際(則ち、3面燃焼から2面燃焼への切替の際)の補正ガス20の量のことである。
【0041】
全く同様にして、例えば、A燃焼面+B燃焼面を用いた補正ガス20の燃焼(則ち、A+B面燃焼)の途中で、異なる燃焼面12(則ち、A燃焼面)に選択的に切替えた後、補正ガス20の燃焼(則ち、A面燃焼)を続行する際(則ち、2面燃焼から1面燃焼への切替の際)の補正ガス20の量のことでもある。
【0042】
補正値(α)26は、前回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15による保有熱量30aに基づいて決定される数値である。保有熱量30aが所定量より少ないとき、補正値(α)26>1に設定される。
【0043】
本実施の形態では、補正値(α)26として、1.6〜1.8の値を用いているが、特にこれに限定されるものではなく、燃焼条件に従って適宜変更可能なものである。また、保有熱量30aが所定量より多いとき、補正値(α)26<1に設定される。
【0044】
図3(a)〜(c)におけるaラインは、A燃焼面+B燃焼面を用いた補正ガス20の燃焼(則ち、A+B面燃焼)を実行した場合に、フィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を満足させる最低限のガス量を備えた補正ガス20cを意味している。
【0045】
同様に、図3(a)〜(c)におけるbラインは、A燃焼面+B燃焼面+c燃焼面を用いた補正ガス20の燃焼(則ち、A+B+C面燃焼)を実行した場合に、フィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を満足させる最低限のガス量を備えた補正ガス20cを意味している。
【0046】
選択燃焼面13で燃焼可能な最大の補正ガス量24aとは、図3(b)に示すように、選択燃焼面13(例えば、A燃焼面+B燃焼面)で燃焼可能な最大の補正ガス量24aを意味する。
【0047】
選択燃焼面13で燃焼可能な最大の補正ガス量24aを供給する所定時間は、燃焼装置10の燃焼条件によって適宜決定可能なものである。補正ガス20における所定のガス量とは、燃焼面切替ラインに対応する補正ガス量を意味する。
【0048】
次に第一の発明の一実施の形態における燃焼装置10の作用を説明する。
図2は第一の発明の一実施の形態にかかる燃焼装置10のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15における、補正ガス20の燃焼特性、および給湯の出湯温特性を示すグラフであり、図3は第一の発明の一実施の形態にかかる燃焼装置10のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15における、補正ガス20の燃焼特性、および給湯の出湯温特性を示すグラフである。
【0049】
実施の形態における燃焼装置10は、図2および図3に示すように、出湯時に、フィードフォワード燃焼ガス量(F/F)24と補正値(α)26とに基づいて算出した補正ガス20を燃焼させる際に、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20a、および当該フィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した補正ガス20bに応じて、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替えるとともに、当該選択燃焼面13上で当該補正ガス20を燃焼させて給湯の出湯温14の変動を最適化するフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行することができる。
【0050】
更に詳しく第一の発明の一実施の形態の作用について説明する。
燃焼面選択切替手段16は、補正ガス20を燃焼させる際に、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替えることができるものであって、さらに、以下の[選択切替動作1]〜[選択切替動作3]に説明する動作を実行することができる。
【0051】
[選択切替動作1] フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20a、および当該フィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した補正ガス20bを同一の選択燃焼面13を用いて供給可能な場合(図2参照)。
【0052】
例えば、図2に示すように、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13がA燃焼面+B燃焼面であり、当該フィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13がA燃焼面+B燃焼面である、つまり、両者を同一の選択燃焼面13(つまり、A燃焼面+B燃焼面)を用いて供給可能な場合。
【0053】
燃焼面選択切替手段16は、このときの同一の選択燃焼面(つまり、A燃焼面+B燃焼面)13上でフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0054】
[選択切替動作2] フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13と当該フィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13とを異なる選択燃焼面13を用いて供給する必要がある場合であって、さらにフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を満足させる最低限のガス量を備えた補正ガス20cを供給可能な選択燃焼面13とフィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13とが同一のとき。
【0055】
例えば、図3(a)に示すように、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13がA燃焼面+B燃焼面であり、当該フィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13がA燃焼面+B燃焼面+C燃焼面である場合(つまり、異なる選択燃焼面13を用いて供給する場合)であって、さらに、図3(b)に示すように、フィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を満足させる最低限のガス量を備えた補正ガス20c(例えば、aライン)を供給可能な選択燃焼面13がA燃焼面+B燃焼面であり、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13がA燃焼面+B燃焼面のとき(つまり、両者を同一の選択燃焼面13を用いて供給可能なとき)。
【0056】
燃焼面選択切替手段16は、図3(b)に示すように、このときの選択燃焼面13(例えば、A燃焼面+B燃焼面)で燃焼可能な最大の補正ガス量24a(本実施の形態では、燃焼面切替ライン)を所定時間だけ供給してフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0057】
[選択切替動作3] フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13と当該フィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13とを異なる選択燃焼面13を用いて供給する必要がある場合であって、さらにフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を満足させる最低限のガス量を備えた補正ガス20cを供給可能な選択燃焼面13とフィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13とが同一のとき。
【0058】
例えば、図3(a)に示すように、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13がA燃焼面+B燃焼面であり、当該フィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13がA燃焼面+B燃焼面+C燃焼面ある揚合(つまり、異なる選択燃焼面13を用いて供給する必要がある場合)であって、さらに、図3(c)に示すように、フィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を満足させる最低限のガス量を備えた補正ガス20c(例えば、bライン)を供給可能な選択燃焼面13がA燃焼面+B燃焼面+C燃焼面であり、フィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13がA燃焼面+B燃焼面+C燃焼面のとき(つまり、選択燃焼面13が同一のとき)。
【0059】
燃焼面選択切替手段16は、このときのフィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを当該選択燃焼面13(例えば、A燃焼面+B燃焼面+C燃焼面)に供給してフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行し、当該補正ガス20が所定のガス量(例えば、図3(c)に示す燃焼面切替ライン)に達したとき、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13(例えば、A燃焼面+B燃焼面)に燃焼面12を切替えるとともに、当該選択燃焼面13(A燃焼面+B燃焼面)に当該補正ガス20を供給してフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0060】
以上説明したように第一の発明の一実施の形態の燃焼装置10によれば、補正ガス20を燃焼させる際に、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20a、およびフィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した補正ガス20bに応じて、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替え、選択燃焼面13上で補正ガス20を燃焼させてフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行することにより、給湯の出湯温14の変動を最適化して快適な湯の使用ができる。
【0061】
以下、図面に基づき第二の発明の一実施の形態を説明する。図1は第二の発明の一実施の形態にかかる燃焼装置10を示す機能ブロック図である。なお、第一の発明の一実施の形態と重複する記載は省略するものとする。
【0062】
本実施の形態の燃焼装置10は、出湯時に、フィードフォワード燃焼ガス量(F/F)24と補正値(α)26とに基づいて算出した補正ガス20を燃焼させる際に、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替えるとともに、選択燃焼面13上で補正ガス20を燃焼させて給湯の出湯温14の変動を最適化するフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行するものであって、燃焼面選択切替手段16と選択燃焼面記憶手段30とを備えて成る。
【0063】
燃焼装置10に装置された選択燃焼面記憶手段30は、選択的に切替えられた選択燃焼面13、または選択燃焼面13上でフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行したときに発生する保有熱量30aを記憶可能なように、燃焼面選択切替手段16に接続されて成る。
【0064】
燃焼装置10に装置された燃焼面選択切替手段16は、補正ガス20を燃焼させる際に、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替えるものであって、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した前記補正ガス20a、およびフィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した前記補正ガス20bを同一の選択燃焼面13を用いて供給可能な場合に、同一の選択燃焼面13上でフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行し、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13とフィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13とを異なる選択燃焼面13を用いて供給する必要がある場合に、選択燃焼面記憶手段30に記憶された前回の燃焼面12ならびに保有熱量30aに基づいて、次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15に用いる選択燃焼面13の選択的な切替えを実行するように、選択燃焼面記憶手段30に接続されて成る。
【0065】
本実施の形態の燃焼面選択切替手段16は、選択燃焼面記憶手段30に記憶された前回の保有熱量30aが所定熱量30b以上のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数より所定面数だけ少ない選択燃焼面13を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行し、選択燃焼面記憶手段30に記憶された前回の保有熱量30aが所定熱量30b未満のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数より所定面数だけ多い選択燃焼面13を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行するものである。
【0066】
次に第二の発明の一実施の形態における燃焼装置10の作用を説明する。図2は第二の発明の一実施の形態にかかる燃焼装置10のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15における、補正ガス20の燃焼特性、および給湯の出湯温特性を示すグラフであり、図4は第二の発明の一実施の形態にかかる燃焼装置10において、前回の燃焼面12ならびに保有熱量30aに対して次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15に用いる選択燃焼面13を選択するときに用いる対応表である。
【0067】
第二の発明の一の実施の形態における燃焼装置10は、図2に示すように、出湯時に、フィードフォワード燃焼ガス量(F/F)24と補正値(α)26とに基づいて算出した補正ガス20を燃焼させる際に、複数の燃焼面12の中から所要の面数の燃焼面12を選択的に切替えるとともに、当該選択燃焼面13上で当該補正ガス20を燃焼させて給湯の出湯温14の変動を最適化するフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行することができる。
【0068】
さらに、第二の発明の一実施の形態における燃焼装置10は、以下の[選択切替動作4]〜[選択切替動作5]に説明する動作を実行することができる。
【0069】
[選択切替動作4] フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20a、および当該フィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した補正ガス20bを同一の選択燃焼面13を用いて供給可能な場合。
【0070】
例えば、図2に示すように、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13がA燃焼面+B燃焼面であり、当該フィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13がA燃焼面+B燃焼面である場合(つまり、同一の選択燃焼面13を用いて補正ガス20を供給可能な場合)。
【0071】
第二の発明の一実施の形態における燃焼装置10は、このときの同一の選択燃焼面13(例えば、A燃焼面+B燃焼面)上で、補正ガス20の燃焼(例えば、A+B面燃焼)を行ってフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0072】
[選択切替動作5] フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13と当該フィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13とを異なる選択燃焼面13を用いて供給する必要がある場合。
【0073】
例えば、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13がA燃焼面+B燃焼面であり、当該フィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13がA燃焼面+B燃焼面+C燃焼面(つまり、異なる選択燃焼面13を用いて補正ガス20を供給する必要がある場合)。
【0074】
第二の発明の一実施の形態における燃焼装置10は、図4に示すように、このときに選択燃焼面記憶手段30に記憶された前回の燃焼面12に基づいて、次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15に用いる選択燃焼面13の選択的な切替えを実行する。
【0075】
更に詳しく第二の発明の一実施の形態の作用について説明する。
選択燃焼面記憶手段30は、選択的に切替えられた選択燃焼面13(則ち、A燃焼面、B燃焼面、C燃焼面、A燃焼面+B燃焼面、A燃焼面+C燃焼面、C燃焼面+B燃焼面、A燃焼面+B燃焼面+C燃焼面)、または当該選択燃焼面13上でフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行したときに発生する保有熱量30aを記憶可能である。
【0076】
燃焼面選択切替手段16は、このときの補正ガス20を燃焼させる際に、複数の燃焼面12(本実施の形態では、A燃焼面、B燃焼面、C燃焼面の3燃焼面)の中から所要の面数(則ち、1燃焼面〜3燃焼面)の燃焼面12(則ち、A燃焼面、B燃焼面、C燃焼面、A燃焼面+B燃焼面、A燃焼面+C燃焼面、C燃焼面+B燃焼面、A燃焼面+B燃焼面+C燃焼面)を選択的に切替えることが可能である。
【0077】
さらに、燃焼面選択切替手段16は、以下の[選択切替動作6]〜[選択切替動作7]に説明する動作を実行することができる。
【0078】
本実施の形態では、図4に示すように、保有熱量30aによる燃焼面12の選択的な切替えに替えて、補正値(α)26による燃焼面12の選択的な切替えを実行している。
【0079】
[選択切替動作6] 選択燃焼面記憶手段30に記憶された前回の保有熱量30aが所定熱量30b以上のとき(則ち、図4において、補正値(α)26>1、ただし、>は不等号記号を意味する)。
【0080】
燃焼面選択切替手段16は、このときの次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数より所定面数だけ少ない選択燃焼面13を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0081】
例えば、補正値(α)26>1の場合であって、前回の燃焼面12の選択面がA燃焼面+B燃焼面+C燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、3燃焼面)より1燃焼面(=所定面数)だけ少ない選択燃焼面13(則ち、A燃焼面+B燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0082】
また、補正値(α)26>1の場合であって、前回の燃焼面12の選択面がA燃焼面+B燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、2燃焼面)より1燃焼面(=所定面数)だけ少ない選択燃焼面13(則ち、A燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0083】
また、補正値(α)26>1の場合であって、前回の燃焼面12の選択面がA燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、1燃焼面)と同数の選択燃焼面13(則ち、A燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行するようにしている。
【0084】
なお、補正値(α)26>1の場合であって、前回の燃焼面12の選択面がA燃焼面+B燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、2燃焼面)と同数の選択燃焼面13(則ち、A燃焼面+B燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行するようにしてもよい。
【0085】
[選択切替動作7] 選択燃焼面記憶手段30に記憶された前回の保有熱量30aが所定熱量30b未満のとき(則ち、図4において、補正値(α)26<1、ただし、<は不等号記号を意味する)。
【0086】
燃焼面選択切替手段16は、このときの次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数より所定面数だけ多い選択燃焼面13を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0087】
例えば、補正値(α)26<1の場合であって、前回の燃焼面12の選択面がA燃焼面+B燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、2燃焼面)より1燃焼面(=所定面数)だけ多い選択燃焼面13(則ち、A燃焼面+B燃焼面+C燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0088】
また、補正値(α)26<1の場合であって、前回の燃焼面12の選択面がA燃焼面+B燃焼面+C燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、3燃焼面)と同数の選択燃焼面13(則ち、A燃焼面+B燃焼面+C燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行するようにしている。
【0089】
また、補正値(α)26<1の場合であって、前回の燃焼面12の選択面がA燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、1燃焼面)より1燃焼面(=所定面数)だけ多い選択燃焼面13(則ち、A燃焼面+B燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行する。
【0090】
なお、補正値(α)26<1の場合であって、前回の燃焼面12の選択面がA燃焼面+B燃焼面のときは、次回の選択燃焼面13の選択面数を前回の燃焼面12の選択面数(則ち、2燃焼面)と同数の選択燃焼面13(則ち、A燃焼面+B燃焼面)を用いて次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行するようにしてもよい。
【0091】
以上説明したように第二の発明の一実施の形態の燃焼装置10によれば、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20a、およびフィードフォワード燃焼ガス量(F/F)24と補正値(α)26との積(F/F・α)に基づいて算出した補正ガス20bを同一の選択燃焼面13を用いて供給可能な場合に、同一の選択燃焼面13上でフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15を実行し、また、フィードフォワード燃焼ガス量(F/F)24に基づいて算出した補正ガス20aを供給可能な選択燃焼面13とフィードフォワード燃焼ガス量(F/F)24および補正値(α)26の積(F/F・α)に基づいて算出した補正ガス20bを供給可能な選択燃焼面13とを異なる選択燃焼面13を用いて供給する必要がある場合に、選択燃焼面記憶手段30に記憶された前回の燃焼面12ならびに保有熱量30aに基づいて、次回のフィードフォワード給湯燃焼制御(F/F給湯燃焼制御)15に用いる選択燃焼面13の選択的な切替えを実行することにより、給湯の出湯温14の変動を最適化して快適な湯の使用ができる。
【0092】
【発明の効果】
本発明に係る燃焼装置によれば、補正ガスを燃焼させる際に、フィードフォワード燃焼ガス量に基づいて算出した補正ガス、およびフィードフォワード燃焼ガス量と補正値との積に基づいて算出した補正ガスに応じて、複数の燃焼面の中から所要の面数の燃焼面を選択的に切替え、選択燃焼面上で補正ガスを燃焼させてフィードフォワード給湯燃焼制御を実行することにより、給湯の出湯温の変動を最適化して快適な湯の使用ができる。
【0093】
さらに本発明の燃焼装置によれば、フィードフォワード燃焼ガス量に基づいて算出した補正ガス、およびフィードフォワード燃焼ガス量と補正値との積に基づいて算出した補正ガスを同一の選択燃焼面を用いて供給可能な場合に、同一の選択燃焼面上でフィードフォワード給湯燃焼制御を実行し、また、フィードフォワード燃焼ガス量に基づいて算出した補正ガスを供給可能な選択燃焼面とフィードフォワード燃焼ガス量と補正値の積に基づいて算出した補正ガスを供給可能な選択燃焼面とを異なる選択燃焼面を用いて供給する必要がある揚合に、選択燃焼面記憶手段に記憶された前回の選択燃焼面ならびに保有熱量に基づいて、次回のフィードフォワード給湯燃焼制御に用いる選択燃焼面の選択的な切替えを実行することにより、給湯の出湯温の変動を最適化して快適な湯の使用ができる。
【図面の簡単な説明】
【図1】第一の発明の一実施の形態または第二の発明の一実施の形態にかかる燃焼装置を示す機能ブロック図である。
【図2】第一の発明の一実施の形態または第二の発明の一実施の形態にかかる燃焼装置のフィードフォワード給湯燃焼制御における、補正ガスの燃焼特性、および給湯の出湯温特性を示すグラフの図表である。
【図3】第一の発明の一実施の形態にかかる燃焼装置のフィードフォワード給湯燃焼制御における、補正ガスの燃焼特性、および給湯の出湯温特性を示すグラフの図表である。
【図4】第二の発明の一実施の形態にかかる燃焼装置において、前回の選択燃焼面ならびに保有熱量に対して次回のフィードフォワード給湯燃焼制御に用いる選択燃焼面を選択するときに用いる対応図表である。
【図5】従来の燃焼装置のフィードフォワード給湯燃焼制御における、補正ガスの燃焼特性、および給湯の出湯温特性を示すグラフの図表である。
【符号の説明】
10…燃焼装置
12…燃焼面
13…選択燃焼面
14…出湯温
15…フィードフォワード給湯燃焼制御
16…燃焼面選択切替手段
20…補正ガス
20a…フィードフォワード燃焼ガス量に基づいて算出した補正ガス
20b…フィードフォワード燃焼ガス量と補正値との積に基づいて算出した補正ガス
20c…フィードフォワード給湯燃焼制御を満足させる最低限の補正ガス
24…フィードフォワード燃焼ガス量
24a…フィードフォワード給湯燃焼制御を満足させる最低限の補正ガスを供給可能な選択燃焼面で燃焼可能な最大の補正ガス量
26…補正値
30…選択燃焼面記憶手段
30a…保有熱量
30b…所定熱量
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention, at the time of tapping, when burning the correction gas calculated based on the feedforward combustion gas amount and the correction value, while selectively switching the required number of combustion surfaces from among a plurality of combustion surfaces, The present invention relates to a combustion apparatus that performs feedforward hot-water supply combustion control for optimizing fluctuations in the hot water supply temperature by burning the correction gas on the selected combustion surface.
[0002]
[Prior art]
Conventionally, this type of combustion apparatus uses a plurality of combustion surfaces (for example, a combustion surface having an A combustion surface and a B combustion surface) when burning a correction gas calculated based on a feedforward combustion gas amount and a correction value at the time of tapping. And a C combustion surface), and selectively switches the required number of combustion surfaces, and burns the correction gas on the selected combustion surface to optimize fluctuations in the hot water supply temperature. Feed-forward hot water supply combustion control was performed.
[0003]
In the feedforward hot water supply combustion control without switching of the combustion surface, for example, as shown in FIG. 5A, the A combustion surface and the B combustion surface are defined as a selected combustion surface (hereinafter, referred to as A + B combustion surface). During the combustion of the correction gas, the switching of the combustion surface is not performed, and the correction gas is burned on the same selected combustion surface (that is, the A + B combustion surface) (hereinafter, referred to as A + B surface combustion) and fed forward. Hot water supply combustion control was being executed.
[0004]
Further, in the feedforward hot water supply combustion control with switching of the combustion surface, for example, as shown in FIG. 5C, at the beginning of tapping, an A + B + C combustion surface composed of an A combustion surface, a B combustion surface, and a C combustion surface is used. When the feedforward hot water supply combustion control (that is, feedforward hot water supply combustion control by A + B + C plane combustion) as the selected combustion surface is executed and the correction gas reaches a predetermined gas amount (that is, the combustion surface switching line), the combustion surface And the feedforward hot water supply combustion control using the A + B combustion surface as the selected combustion surface (that is, feedforward hot water supply combustion control by A + B surface combustion) is executed.
[0005]
[Problems to be solved by the invention]
However, in the conventional combustion apparatus, in the feedforward hot water supply combustion control without switching the combustion surface, it is possible to optimize the fluctuation of the outlet temperature of the hot water supply (see FIG. 5 (b)). In the feedforward hot water supply combustion control accompanied by the above, since the variation of the outlet temperature due to the switching of the combustion surface occurs near the combustion surface switching line (see FIG. 5D), it is difficult to optimize the variation of the outlet temperature of the hot water supply. However, there is a problem that the user of the hot water gives discomfort.
[0006]
The present invention has been made in view of such problems of the conventional technology, and has as its object to provide a combustion device that can optimize the fluctuation of the outlet temperature of hot water supply and can use hot water comfortably. .
[0007]
[Means for Solving the Problems]
The gist of the present invention to achieve this object lies in the inventions in the following items.
[0008]
[1] When the correction gas (20) calculated based on the feedforward combustion gas amount (24) and the correction value (26) is burned at the time of tapping, a required surface is selected from the plurality of combustion surfaces (12). The number of combustion surfaces (12) are selectively switched, and the correction gas (20) is burned on the selectively switched selected combustion surface (13) to optimize fluctuations in the hot water supply temperature (14). In the combustion device (10) that executes the feedforward hot water supply combustion control (15)
When the correction gas (20) is burned, the correction gas (20a) calculated based on the feedforward combustion gas amount (24), and the feedforward combustion gas amount (24) and the correction value (26) In accordance with the correction gas (20b) calculated based on the product of the above, the required number of combustion surfaces (12) are selectively switched from the plurality of combustion surfaces (12), and the selected combustion surface (13) is selected. ), The feedforward hot water supply combustion control (15) is performed by burning the correction gas (20).
A combustion surface selection switching means (16) for selectively switching a required number of combustion surfaces (12) from a plurality of combustion surfaces (12) when burning the correction gas (20); Consisting of
The combustion surface selection switching means (16) includes:
The correction gas (20a) calculated based on the feedforward combustion gas amount (24) and the correction gas (20a) calculated based on the product of the feedforward combustion gas amount (24) and the correction value (26). 20b) can be supplied using the same selected combustion surface (13), the feedforward hot water supply combustion control (15) is executed on the same selected combustion surface (13),
Based on the product of the selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24) and the feedforward combustion gas amount (24) and the correction value (26). This is the case where it is necessary to supply the calculated correction gas (20b) to the selected combustion surface (13) that can be supplied using a different selected combustion surface (13), and further satisfies the feedforward hot water supply combustion control (15). The selected combustion surface (13) capable of supplying the minimum correction gas (20c) to be corrected and the selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24) are the same. In this case, the feedforward combustion control (15) is executed by supplying the maximum correction gas amount combustible on the selected combustion surface (13) for a predetermined time,
The selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24) and the product of the feedforward combustion gas amount (24) and the correction value (26) Even if it is necessary to supply the selected combustion surface (13) that can supply the correction gas (20b) calculated based on the selected combustion surface (13) using a different selected combustion surface (13), the combustion surface (12) is switched. The selected combustion surface (13) capable of supplying the correction gas (20c) for satisfying the feedforward hot water supply combustion control (15) without any problem, the feedforward combustion gas amount (24), and the correction value (26) When the selected combustion surface (13) capable of supplying the correction gas (20b) calculated based on the product of the same is the same, the feedforward combustion gas amount (24) and the correction value ( 6) The correction gas (20b) calculated based on the product of the above is supplied to the selected combustion surface (13) to execute the feedforward hot water supply combustion control (15), and the correction gas (20) becomes a predetermined gas amount. Is reached, the combustion surface (12) is switched to the selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24), and the selected combustion surface is switched to the selected combustion surface. (13) supplying the correction gas (20) to execute the feedforward hot water supply combustion control (15);
A combustion device (10), characterized in that:
[0009]
[2] When the correction gas (20) calculated based on the feedforward combustion gas amount (24) and the correction value (26) is burned at the time of tapping, a required surface is selected from the plurality of combustion surfaces (12). The number of combustion surfaces (12) are selectively switched, and the correction gas (20) is burned on the selectively switched selected combustion surface (13) to optimize fluctuations in the hot water supply temperature (14). In the combustion device (10) that executes the feedforward hot water supply combustion control (15)
Combustion surface selection switching means (16) for selectively switching a required number of combustion surfaces (12) from a plurality of combustion surfaces (12) when burning the correction gas (20);
The selection that can store the selectively switched selected combustion surface (13) or the retained heat amount (30a) generated when the feedforward hot water supply combustion control (15) is executed on the selected combustion surface (13). Combustion surface storage means (30);
Comprising
The combustion surface selection switching means (16) includes:
The correction gas (20a) calculated based on the feedforward combustion gas amount (24) and the correction gas calculated based on a product of the feedforward combustion gas amount (24) and the correction value (26). (20b) can be supplied using the same selected combustion surface (13), the feedforward hot water supply combustion control (15) is executed on the same selected combustion surface (13),
The selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24) and the product of the feedforward combustion gas amount (24) and the correction value (26) When it is necessary to supply the selected combustion surface (13) that can supply the correction gas (20b) calculated based on the selected combustion surface (13) using a different selected combustion surface (13), the selected combustion surface storage means (30) Based on the previous selected combustion surface (13) and the retained heat quantity (30a) stored in the storage unit, the selective switching of the selected combustion surface (13) to be used in the next feedforward hot water supply combustion control (15) is performed. Run,
Further, the combustion surface selection switching means (16) includes:
When the previously stored heat amount (30a) stored in the selected combustion surface storage means (30) is equal to or more than a predetermined heat amount (30b), the number of selected surfaces of the next selected combustion surface (13) is determined by the previous selection. Executing the next feedforward hot water supply combustion control (15) using the selected combustion surface (13) that is smaller by the predetermined number of surfaces than the selected number of combustion surfaces (13);
When the previously stored heat quantity (30a) stored in the selected combustion face storage means is less than the predetermined heat quantity (30b), the number of selected faces of the next selected combustion face (13) is changed to the number of selected faces of the previous selected combustion face (30). The next feedforward hot water supply combustion control (15) is executed by using the selected combustion surface (13) which is larger by the predetermined number of surfaces than the selected surface number of 13).
A combustion device (10), characterized in that:
[0010]
The present invention operates as follows.
First, the operation of the combustion device (10) according to the first invention will be described.
[0011]
The combustion device (10) according to the first aspect of the present invention provides a feedforward combustion gas when burning the correction gas (20) calculated based on the feedforward combustion gas amount (24) and the correction value (26) at the time of tapping. Depending on the correction gas (20a) calculated based on the amount (24) and the correction gas (20b) calculated based on the product of the feedforward combustion gas amount (24) and the correction value (26), a plurality of A required number of combustion surfaces (12) are selectively switched from among the combustion surfaces (12), and the correction gas (20) is burned on the selected combustion surface (13) to discharge hot water (14). The feedforward hot water supply combustion control (15) for optimizing the fluctuation of (1) can be executed.
[0012]
The operation of the first invention will be described in more detail.
[0013]
The combustion surface selection switching means (16) is capable of selectively switching a required number of combustion surfaces (12) from a plurality of combustion surfaces (12) when burning the correction gas (20). Further, the operations described in the following [selection switching operation 1] to [selection switching operation 3] can be executed.
[0014]
[Selection Switching Operation 1] Correction gas (20a) calculated based on feedforward combustion gas amount (24) and correction calculated based on the product of feedforward combustion gas amount (24) and correction value (26) When the gas (20b) can be supplied using the same selective combustion surface (13).
[0015]
The combustion surface selection switching means (16) executes feedforward hot water supply combustion control (15) on the same selected combustion surface (13) at this time.
[0016]
[Selection switching operation 2] A selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24), the feedforward combustion gas amount (24), and the correction value (26) In the case where it is necessary to supply the selected combustion surface (13) that can supply the correction gas (20b) calculated based on the product of Supplying the correction gas (20a) calculated based on the selected combustion surface (13) capable of supplying the correction gas (20c) having the minimum gas amount satisfying (15) and the feedforward combustion gas amount (24) When the possible selected combustion surface (13) is the same.
[0017]
The combustion surface selection switching means (16) supplies the maximum correction gas amount (24a) combustible on the selected combustion surface (13) at this time for a predetermined time, and executes the feed forward hot water supply combustion control (15).
[0018]
[Selection Switching Operation 3] A selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24), the feedforward combustion gas amount (24), and the correction value (26) In the case where it is necessary to supply the selected combustion surface (13) that can supply the correction gas (20b) calculated based on the product of The correction gas (20b) calculated based on the product of the selected combustion surface (13) capable of supplying the minimum correction gas (20c) satisfying (15), the feedforward combustion gas amount (24), and the correction value (26) ) Can be supplied to the same selected combustion surface (13).
[0019]
The combustion surface selection switching means (16) supplies the correction gas (20b) calculated based on the product of the feedforward combustion gas amount (24) and the correction value (26) at this time to the selected combustion surface (13). When the correction gas (20) reaches a predetermined gas amount, the correction gas (20a) calculated based on the feedforward combustion gas amount (24) can be supplied. The combustion surface (12) is switched to the selected combustion surface (13), and the correction gas (20) is supplied to the selected combustion surface (13) to execute the feedforward hot water supply combustion control (15).
[0020]
As described above, according to the combustion apparatus (10) of the first invention, the variation of the tapping temperature (14) of hot water supply can be optimized and comfortable hot water can be used.
[0021]
Next, the operation of the combustion device (10) in the second invention will be described.
The combustion device (10) according to the second aspect of the present invention uses a plurality of combustion surfaces when burning the correction gas (20) calculated based on the feedforward combustion gas amount (24) and the correction value (26) at the time of tapping. The required number of combustion surfaces (12) are selectively switched from among (12), and the correction gas (20) is burned on the selected combustion surface (13) to reduce the hot water supply temperature (14). The feedforward hot water supply combustion control (15) for optimizing the fluctuation is executed.
[0022]
Furthermore, the combustion device (10) in the second invention can execute the operations described in the following [selection switching operation 4] to [selection switching operation 5].
[0023]
[Selection Switching Operation 4] The correction gas (20a) calculated based on the feedforward combustion gas amount (24) and the correction calculated based on the product of the feedforward combustion gas amount (24) and the correction value (26). When the gas (20b) can be supplied using the same selective combustion surface (13).
[0024]
The combustion device (10) in the second invention executes the feedforward hot water supply combustion control (15) on the same selected combustion surface (13) at this time.
[0025]
[Selection Switching Operation 5] A selected combustion surface (13) capable of supplying the correction gas (20a) calculated based on the feedforward combustion gas amount (24), the feedforward combustion gas amount (24), and the correction value (26) When it is necessary to supply the selected combustion surface (13) that can supply the correction gas (20b) calculated based on the product of the selected combustion surface using a different selected combustion surface (13).
[0026]
The combustion device (10) according to the second aspect of the invention feeds the next feedforward hot water based on the previous selected combustion surface (13) and the retained heat amount (30a) stored in the selected combustion surface storage means (30) at this time. The selective switching of the selected combustion surface (13) used for the combustion control (15) is executed.
[0027]
The operation of the second invention will be described in more detail.
The selected combustion surface storage means (30) stores the selectively switched combustion surface (13) or the retained heat generated when the feedforward hot water supply combustion control (15) is executed on the selected combustion surface (13). (30a) can be stored.
[0028]
The combustion surface selection switching means (16) selectively switches a required number of combustion surfaces (12) from a plurality of combustion surfaces (12) when burning the correction gas (20) at this time. Is possible.
[0029]
Furthermore, the combustion surface selection switching means (16) can execute the operations described in the following [selection switching operation 6] to [selection switching operation 7].
[0030]
[Selection switching operation 6] When the previous stored heat quantity (30a) stored in the selected combustion surface storage means (30) is equal to or more than the predetermined heat quantity (30b).
[0031]
The combustion surface selection switching means (16) reduces the number of selected surfaces of the next selected combustion surface (13) by a predetermined number of surfaces from the number of selected surfaces of the previous selected combustion surface (13). Then, the next feedforward hot water supply combustion control (15) is executed.
[0032]
[Selection switching operation 7] When the previous stored heat quantity (30a) stored in the selected combustion surface storage means (30) is less than the predetermined heat quantity (30b).
[0033]
The combustion surface selection switching means (16) increases the number of selected surfaces of the next selected combustion surface (13) by a predetermined number of surfaces from the number of selected surfaces of the previous selected combustion surface (13). Then, the next feedforward hot water supply combustion control (15) is executed.
[0034]
As described above, according to the combustion apparatus (10) of the second invention, the fluctuation of the tapping temperature (14) of hot water supply can be optimized and comfortable hot water can be used.
[0035]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the first invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing a combustion device 10 according to one embodiment of the first invention.
As shown in FIG. 2, the combustion device 10 of the present embodiment performs correction gas calculation based on a feedforward combustion gas amount (referred to as F / F) 24 and a correction value (referred to as α) 26 at the time of tapping. When burning 20, the required number of burning surfaces 12 are selectively switched from the plurality of burning surfaces 12, and the correction gas 20 is burned on the selected burning surface 13 to change the hot water outlet temperature 14. The feedforward hot water supply combustion control (referred to as F / F hot water supply combustion control) 15 for optimizing is performed.
[0036]
Further, when burning the correction gas 20, the combustion device 10 of the present embodiment calculates the correction gas 20a and the feedforward combustion gas amount (F) calculated based on the feedforward combustion gas amount (F / F) 24. / F) 24 and the correction value (α) 26 (that is, F / F · α, where is a product operation symbol), and a plurality of combustion surfaces 12 A required number of combustion surfaces 12 are selectively switched from among them, and the correction gas 20 is burned on the selected combustion surface 13 to execute feedforward hot water supply combustion control (F / F hot water supply combustion control) 15. , A combustion surface selection switching means 16.
[0037]
The combustion surface selection switching means 16 selectively switches the required number of combustion surfaces 12 from the plurality of combustion surfaces 12 when the correction gas 20 is burned. The combustion surface 12 according to the present embodiment includes three combustion surfaces 12 (that is, the number of surfaces = 3): an A combustion surface, a B combustion surface, and a C combustion surface.
[0038]
The A combustion surface, the B combustion surface, and the C combustion surface can each independently burn the correction gas 20 (that is, A surface combustion, B surface combustion, and C surface combustion), and are selectively switched. The required number of combustion surfaces 12 (that is, A combustion surface + B combustion surface, A combustion surface + C combustion surface, C combustion surface + B combustion surface, and A combustion surface + B combustion surface + C combustion surface) are combined to make correction gas 20. (That is, A + B surface combustion, A + C surface combustion, C + B surface combustion, and A + B + C surface combustion).
[0039]
The combustion surface switching line is the amount of the correction gas 20 when the combustion of the correction gas 20 is continued after selectively switching to a different combustion surface 12 during the combustion of the correction gas 20.
[0040]
For example, as shown in FIGS. 3A to 3C, during the combustion of the correction gas 20 using the A combustion surface + B combustion surface + C combustion surface (that is, A + B + C surface combustion), different combustion surfaces 12 ( That is, when the combustion of the correction gas 20 (that is, A + B combustion) is continued after the selective switching to the A combustion surface + B combustion surface (that is, the switching from the three combustion to the two combustion). 2) means the amount of the correction gas 20).
[0041]
In exactly the same way, for example, during the combustion of the correction gas 20 using the A combustion surface + B combustion surface (that is, the A + B surface combustion), it is selectively switched to a different combustion surface 12 (that is, the A combustion surface). After that, it also means the amount of the correction gas 20 when the combustion of the correction gas 20 (that is, the A-side combustion) is continued (that is, when switching from the two-sided combustion to the one-sided combustion).
[0042]
The correction value (α) 26 is a numerical value determined based on the retained heat amount 30a by the previous feedforward hot water supply combustion control (F / F hot water supply combustion control) 15. When the retained heat amount 30a is smaller than the predetermined amount, the correction value (α) 26 is set to be greater than 1.
[0043]
In the present embodiment, a value of 1.6 to 1.8 is used as the correction value (α) 26, but the correction value (α) is not particularly limited to this and can be appropriately changed according to combustion conditions. When the retained heat amount 30a is larger than the predetermined amount, the correction value (α) 26 is set to <1.
[0044]
3 (a) to 3 (c), a line a indicates a feedforward hot water supply combustion control (F / F) when the correction gas 20 is burned using the A combustion surface + B combustion surface (that is, A + B surface combustion). (F hot water supply combustion control) 15 means the correction gas 20c having the minimum gas amount that satisfies 15.
[0045]
Similarly, the b line in FIGS. 3A to 3C indicates a feedforward when the correction gas 20 is burned using the A combustion surface + B combustion surface + c combustion surface (that is, A + B + C surface combustion). The correction gas 20c has a minimum gas amount that satisfies the hot water supply combustion control (F / F hot water supply combustion control) 15.
[0046]
As shown in FIG. 3B, the maximum correction gas amount 24a that can be burned on the selected combustion surface 13 is the maximum corrected gas amount that can be burned on the selected combustion surface 13 (for example, A combustion surface + B combustion surface). 24a.
[0047]
The predetermined time for supplying the maximum correction gas amount 24a that can be combusted on the selected combustion surface 13 can be appropriately determined according to the combustion conditions of the combustion device 10. The predetermined gas amount in the correction gas 20 means a correction gas amount corresponding to the combustion surface switching line.
[0048]
Next, the operation of the combustion device 10 according to the embodiment of the first invention will be described.
FIG. 2 is a graph showing the combustion characteristics of the correction gas 20 and the hot water outlet temperature characteristics in the feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 of the combustion device 10 according to one embodiment of the first invention. FIG. 3 shows the combustion characteristics of the correction gas 20 and the hot water outlet temperature characteristics in the feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 of the combustion device 10 according to the embodiment of the first invention. FIG.
[0049]
As shown in FIGS. 2 and 3, the combustion device 10 in the embodiment generates the correction gas 20 calculated based on the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 at the time of tapping. At the time of combustion, the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 and the product (F) of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 / F · α), the required number of combustion surfaces 12 are selectively switched from the plurality of combustion surfaces 12 in accordance with the correction gas 20b calculated based on the correction gas 20b, and the correction gas is selected on the selected combustion surface 13. A feed-forward hot-water supply combustion control (F / F hot-water supply combustion control) 15 that optimizes the fluctuation of the hot water supply temperature 14 by burning the hot water 20 can be executed.
[0050]
The operation of the embodiment of the first invention will be described in more detail.
The combustion surface selection switching means 16 can selectively switch a required number of combustion surfaces 12 from a plurality of combustion surfaces 12 when the correction gas 20 is burned. The operations described in [selection switching operation 1] to [selection switching operation 3] can be executed.
[0051]
[Selection Switching Operation 1] The correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24, and the product of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 ( (F / F · α) can be supplied using the same selected combustion surface 13 (see FIG. 2).
[0052]
For example, as shown in FIG. 2, the selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 is an A combustion surface + B combustion surface. The selected combustion surface 13 that can supply the correction gas 20b calculated based on the product (F / F · α) of the gas amount (F / F) 24 and the correction value (α) 26 is the A combustion surface + B combustion surface. That is, when both can be supplied using the same selected combustion surface 13 (that is, A combustion surface + B combustion surface).
[0053]
The combustion surface selection switching means 16 executes feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 on the same selected combustion surface (that is, A combustion surface + B combustion surface) 13 at this time.
[0054]
[Selection Switching Operation 2] The selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24, the feedforward combustion gas amount (F / F) 24, and the correction value ( α) when the correction gas 20b calculated based on the product (F / F · α) of 26 needs to be supplied using a different selected combustion surface 13 from the selected combustion surface 13 that can be supplied. Based on the selected combustion surface 13 and the feedforward combustion gas amount (F / F) 24 that can supply the correction gas 20c having the minimum gas amount that satisfies the forward hot water supply combustion control (F / F hot water combustion control) 15. When the selected combustion surface 13 to which the calculated correction gas 20a can be supplied is the same.
[0055]
For example, as shown in FIG. 3A, the selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 is an A combustion surface + B combustion surface. The selected combustion surface 13 capable of supplying the correction gas 20b calculated based on the product (F / F · α) of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 is an A combustion surface + B combustion surface + C combustion surface (that is, supply using a different selected combustion surface 13), and further, as shown in FIG. 3B, feedforward hot water supply combustion control (F / F hot water supply combustion control) The selected combustion surface 13 capable of supplying the correction gas 20c (for example, a line) having the minimum gas amount satisfying the condition 15 is the A combustion surface + B combustion surface, and the feedforward combustion gas amount (F / F) 24 On the basis of the When the selected combustion surface 13 to which the calculated correction gas 20a can be supplied is the A combustion surface + B combustion surface (that is, when both can be supplied using the same selected combustion surface 13).
[0056]
As shown in FIG. 3 (b), the combustion surface selection switching means 16 provides a maximum correction gas amount 24a (in this embodiment) combustable on the selected combustion surface 13 (for example, A combustion surface + B combustion surface) at this time. Then, the feed-forward hot-water supply combustion control (F / F hot-water supply combustion control) 15 is executed by supplying the combustion surface switching line for a predetermined time.
[0057]
[Selection Switching Operation 3] The selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24, the feedforward combustion gas amount (F / F) 24, and the correction value ( α) when the correction gas 20b calculated based on the product (F / F · α) of 26 needs to be supplied using a different selected combustion surface 13 from the selected combustion surface 13 that can be supplied. Selective combustion surface 13 capable of supplying correction gas 20c having a minimum gas amount satisfying forward hot water supply combustion control (F / F hot water supply combustion control) 15, feedforward combustion gas amount (F / F) 24, and correction value (Α) When the selected combustion surface 13 capable of supplying the correction gas 20b calculated based on the product (F / F · α) of 26 is the same.
[0058]
For example, as shown in FIG. 3A, the selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 is an A combustion surface + B combustion surface. The selected combustion surface 13 capable of supplying the correction gas 20b calculated based on the product (F / F · α) of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 is an A combustion surface + B combustion surface + C combustion surface (that is, when it is necessary to supply using a different selected combustion surface 13), and further, as shown in FIG. 3 (c), feed forward hot water supply combustion control (F / F hot water supply) The selected combustion surface 13 that can supply the correction gas 20c (for example, b line) having the minimum gas amount that satisfies the combustion control 15 is A combustion surface + B combustion surface + C combustion surface, and the feedforward combustion gas amount (F / F) When the selected combustion surface 13 capable of supplying the correction gas 20b calculated based on the product (F / F · α) of the correction value (α) 26 and the correction value (α) 26 is A combustion surface + B combustion surface + C combustion surface (that is, When the selected combustion surfaces 13 are the same).
[0059]
The combustion surface selection switching means 16 converts the correction gas 20b calculated based on the product (F / F · α) of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 at this time into the selected combustion. The feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed by supplying the correction gas 20 to the surface 13 (for example, the A combustion surface + B combustion surface + C combustion surface), and the correction gas 20 has a predetermined gas amount (for example, FIG. 3 (c), the selected combustion surface 13 (for example, A combustion surface + B) capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 when reaching the combustion surface switching line shown in FIG. The combustion surface 12 is switched to the combustion surface, and the correction gas 20 is supplied to the selected combustion surface 13 (A combustion surface + B combustion surface) to execute the feedforward hot water supply combustion control (F / F hot water combustion control) 15. You.
[0060]
As described above, according to the combustion apparatus 10 of the first embodiment of the present invention, when the correction gas 20 is burned, the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 And the correction gas 20b calculated based on the product (F / F · α) of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26, from among the plurality of combustion surfaces 12. By selectively switching the required number of combustion surfaces 12 and burning the correction gas 20 on the selected combustion surface 13 to execute feedforward hot water supply combustion control (F / F hot water supply combustion control) 15, hot water supply is performed. By optimizing the fluctuation of the temperature 14, comfortable hot water can be used.
[0061]
Hereinafter, an embodiment of the second invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing a combustion device 10 according to one embodiment of the second invention. Note that the description overlapping with the embodiment of the first invention is omitted.
[0062]
The combustion device 10 of the present embodiment, when burning the correction gas 20 calculated based on the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 at the time of tapping, has a plurality of combustion surfaces. A feed-forward hot-water supply combustion control (F) that selectively switches a required number of combustion surfaces 12 from among the 12 and burns the correction gas 20 on the selected combustion surface 13 to optimize the fluctuation of the hot water supply temperature 14. / F hot water supply combustion control) 15, and includes a combustion surface selection switching unit 16 and a selected combustion surface storage unit 30.
[0063]
The selected combustion surface storage means 30 provided in the combustion apparatus 10 executes the selectively switched selected combustion surface 13 or the feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 on the selected combustion surface 13. It is connected to the combustion surface selection switching means 16 so that the retained heat amount 30a generated sometimes can be stored.
[0064]
The combustion surface selection switching means 16 provided in the combustion device 10 selectively switches a required number of combustion surfaces 12 from a plurality of combustion surfaces 12 when the correction gas 20 is combusted. The correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24, and the product (F / F · α) of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 When the correction gas 20b calculated on the basis of the above can be supplied using the same selected combustion surface 13, the feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed on the same selected combustion surface 13. The product of the selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24, the feedforward combustion gas amount (F / F) 24, and the correction value (α) 26 (F / F · α), the correction gas 20b can be supplied to the selected combustion surface 13 that can be supplied by using a different selected combustion surface 13 if necessary. Based on the previous combustion surface 12 and the retained heat amount 30a, the selected combustion surface storage is performed so that the selective switching of the selected combustion surface 13 used for the next feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed. Connected to the means 30.
[0065]
When the previous stored heat quantity 30a stored in the selected combustion face storage means 30 is equal to or greater than the predetermined heat quantity 30b, the combustion face selection switching means 16 of the present embodiment changes the number of selected faces of the next selected combustion face 13 to the previous count. The next feedforward hot-water supply combustion control (F / F hot-water supply combustion control) 15 is executed using the selected combustion surface 13 that is smaller by the predetermined number of surfaces than the selected number of combustion surfaces 12, and the selected combustion surface storage means 30 stores it. When the previous stored heat amount 30a is less than the predetermined heat amount 30b, the next feed combustion surface 13 is selected by using the selected combustion surface 13 that is larger by a predetermined number than the previous combustion surface 12 by the predetermined number of selected combustion surfaces 12. A forward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed.
[0066]
Next, the operation of the combustion device 10 according to the embodiment of the second invention will be described. FIG. 2 is a graph showing the combustion characteristics of the correction gas 20 and the hot water outlet temperature characteristics in the feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 of the combustion device 10 according to one embodiment of the second invention. FIG. 4 shows the next feed-forward hot-water supply combustion control (F / F hot-water supply combustion control) 15 with respect to the previous combustion surface 12 and the retained heat quantity 30a in the combustion apparatus 10 according to the second embodiment of the present invention. Is a correspondence table used when selecting the selected combustion surface 13 to be used.
[0067]
As shown in FIG. 2, the combustion device 10 according to the second embodiment of the present invention calculates on the basis of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 at the time of tapping. When burning the correction gas 20, a required number of combustion surfaces 12 are selectively switched from the plurality of combustion surfaces 12, and the correction gas 20 is burned on the selected combustion surface 13 to supply hot water. The feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 that optimizes the fluctuation of the temperature 14 can be executed.
[0068]
Furthermore, the combustion device 10 according to one embodiment of the second invention can execute the operations described in the following [selection switching operation 4] to [selection switching operation 5].
[0069]
[Selection Switching Operation 4] The correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 and the product of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26 ( (F / F · α) can be supplied using the same selected combustion surface 13.
[0070]
For example, as shown in FIG. 2, the selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 is an A combustion surface + B combustion surface. The selected combustion surface 13 that can supply the correction gas 20b calculated based on the product (F / F · α) of the gas amount (F / F) 24 and the correction value (α) 26 is the A combustion surface + B combustion surface. Case (that is, when the correction gas 20 can be supplied using the same selected combustion surface 13).
[0071]
The combustion device 10 according to the second embodiment of the present invention performs combustion (for example, A + B surface combustion) of the correction gas 20 on the same selected combustion surface 13 (for example, A combustion surface + B combustion surface) at this time. Then, feed forward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed.
[0072]
[Selection Switching Operation 5] The selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24, the feedforward combustion gas amount (F / F) 24, and the correction value ( α) A case where it is necessary to supply the correction gas 20b calculated based on the product of 26 (F / F · α) and the selected combustion surface 13 that can be supplied using a different selected combustion surface 13.
[0073]
For example, the selected combustion surface 13 capable of supplying the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 is the A combustion surface + B combustion surface, and the feedforward combustion gas amount (F / F) 24 and the selected combustion surface 13 capable of supplying the correction gas 20b calculated based on the product (F / F · α) of the correction value (α) 26 are A combustion surface + B combustion surface + C combustion surface (that is, different selected combustion surfaces). 13 when it is necessary to supply the correction gas 20).
[0074]
As shown in FIG. 4, the combustion device 10 according to the second embodiment of the present invention performs the next feedforward hot water supply combustion based on the previous combustion surface 12 stored in the selected combustion surface storage means 30 at this time. The selective switching of the selected combustion surface 13 used for the control (F / F hot water supply combustion control) 15 is executed.
[0075]
The operation of the embodiment of the second invention will be described in more detail.
The selected combustion surface storage means 30 stores the selectively switched selected combustion surface 13 (that is, A combustion surface, B combustion surface, C combustion surface, A combustion surface + B combustion surface, A combustion surface + C combustion surface, C combustion). The stored heat quantity 30a generated when the feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed on the surface + B combustion surface, A combustion surface + B combustion surface + C combustion surface, or on the selected combustion surface 13. It is possible.
[0076]
When burning the correction gas 20 at this time, the combustion surface selection switching means 16 includes a plurality of combustion surfaces 12 (in the present embodiment, three combustion surfaces A, B, and C). To the required number of surfaces (that is, 1 to 3 burning surfaces) (that is, A burning surface, B burning surface, C burning surface, A burning surface + B burning surface, A burning surface + C burning surface) , C burning surface + B burning surface, and A burning surface + B burning surface + C burning surface).
[0077]
Further, the combustion surface selection switching means 16 can execute the operations described in the following [selection switching operation 6] to [selection switching operation 7].
[0078]
In the present embodiment, as shown in FIG. 4, instead of the selective switching of the combustion surface 12 by the retained heat quantity 30a, the selective switching of the combustion surface 12 by the correction value (α) 26 is executed.
[0079]
[Selection Switching Operation 6] When the previous retained heat quantity 30a stored in the selected combustion surface storage means 30 is equal to or greater than the predetermined heat quantity 30b (that is, in FIG. 4, the correction value (α) 26> 1, where> is an inequality sign) Sign)).
[0080]
The combustion surface selection switching means 16 uses the selected combustion surface 13 in which the number of selected surfaces of the next selected combustion surface 13 at this time is smaller by a predetermined number of surfaces than the number of selected surfaces of the previous combustion surface 12, and performs the next feedforward hot water supply combustion. The control (F / F hot water supply combustion control) 15 is executed.
[0081]
For example, when the correction value (α) 26 is greater than 1 and the selected surface of the previous combustion surface 12 is A combustion surface + B combustion surface + C combustion surface, the number of selected surfaces of the next selected combustion surface 13 is set to the previous number. The next feedforward is performed by using the selected combustion surface 13 (ie, A combustion surface + B combustion surface) that is smaller by one combustion surface (= predetermined number of surfaces) than the selected number of combustion surfaces 12 (ie, three combustion surfaces). Hot water supply combustion control (F / F hot water supply combustion control) 15 is executed.
[0082]
When the correction value (α) 26> 1 and the previous selected combustion surface 12 is A combustion surface + B combustion surface, the number of selected surfaces of the next selected combustion surface 13 is changed to the previous combustion surface. The next feed-forward hot water supply combustion control (F /) using the selected combustion surface 13 (that is, the A combustion surface) smaller by one combustion surface (= predetermined number of surfaces) than the selected number of 12 surfaces (that is, two combustion surfaces). F hot water supply combustion control) 15 is executed.
[0083]
If the correction value (α) 26> 1 and the previous selected combustion surface 12 is the A combustion surface, the number of selected surfaces of the next selected combustion surface 13 is changed to the number of selected previous combustion surfaces 12. The next feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed using the same number of selected combustion surfaces 13 (that is, A combustion surface) as the number of surfaces (that is, one combustion surface). I have.
[0084]
If the correction value (α) 26> 1 and the previous selected combustion surface 12 is the A combustion surface + B combustion surface, the number of selected surfaces of the next selected combustion surface 13 is changed to the previous combustion surface. The next feedforward hot water supply combustion control (F / F hot water combustion control) 15 using the same number of selected combustion surfaces 13 (ie, A combustion surface + B combustion surface) as the number of selected surfaces 12 (ie, two combustion surfaces) May be executed.
[0085]
[Selection Switching Operation 7] When the previous stored heat quantity 30a stored in the selected combustion surface storage means 30 is less than the predetermined heat quantity 30b (that is, in FIG. 4, the correction value (α) 26 <1, where <is an inequality sign) Sign)).
[0086]
The combustion surface selection switching means 16 uses the selected combustion surface 13 in which the number of selected surfaces of the next selected combustion surface 13 at this time is larger than the number of selected surfaces of the previous combustion surface 12 by a predetermined number of surfaces. The control (F / F hot water supply combustion control) 15 is executed.
[0087]
For example, when the correction value (α) 26 <1 and the previous selected combustion surface 12 is the A combustion surface + B combustion surface, the number of selected surfaces of the next selected combustion surface 13 is changed to the previous combustion surface. The next feedforward is performed by using the selected combustion surface 13 (ie, A combustion surface + B combustion surface + C combustion surface) which is larger by one combustion surface (= predetermined number of surfaces) than the selected surface number of 12 (ie, 2 combustion surfaces). Hot water supply combustion control (F / F hot water supply combustion control) 15 is executed.
[0088]
If the correction value (α) 26 <1 and the previous selected combustion surface 12 is A combustion surface + B combustion surface + C combustion surface, the next selected number of selected combustion surfaces 13 is set to the previous number. Next, using the same number of selected combustion surfaces 13 (ie, A combustion surface + B combustion surface + C combustion surface) as the number of selected combustion surfaces 12 (ie, three combustion surfaces), the next feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed.
[0089]
Also, when the correction value (α) 26 <1 and the previous selected combustion surface 12 is the A combustion surface, the number of selected surfaces of the next selected combustion surface 13 is changed to the number of selected previous combustion surfaces 12. Using the selected combustion surface 13 (ie, A combustion surface + B combustion surface) larger by one combustion surface (= predetermined number of surfaces) than the number of surfaces (ie, one combustion surface), the next feedforward hot water supply combustion control (F / F hot water supply combustion control) 15 is executed.
[0090]
When the correction value (α) 26 <1 and the previous selected combustion surface 12 is the A combustion surface + B combustion surface, the number of selected surfaces of the next selected combustion surface 13 is changed to the previous combustion surface. The next feedforward hot water supply combustion control (F / F hot water combustion control) 15 using the same number of selected combustion surfaces 13 (ie, A combustion surface + B combustion surface) as the number of selected surfaces 12 (ie, two combustion surfaces) May be executed.
[0091]
As described above, according to the combustion apparatus 10 of the embodiment of the second invention, the correction gas 20a calculated based on the feedforward combustion gas amount (F / F) 24 and the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26, when the correction gas 20b calculated based on the product (F / F · α) can be supplied using the same selected combustion surface 13, the same selected combustion surface A feed-forward hot-water supply combustion control (F / F hot-water supply combustion control) 15 is performed on 13, and a selected combustion surface 13 capable of supplying a correction gas 20 a calculated based on a feed-forward combustion gas amount (F / F) 24. And a selected combustion surface 13 capable of supplying the correction gas 20b calculated based on the product (F / F · α) of the feedforward combustion gas amount (F / F) 24 and the correction value (α) 26. 1 When it is necessary to supply by using the above, the next feed forward hot water supply combustion control (F / F hot water supply combustion control) 15 based on the previous combustion surface 12 and the retained heat amount 30a stored in the selected combustion surface storage means 30 By performing the selective switching of the selected combustion surface 13 used for the hot water supply, the fluctuation of the hot water supply outlet temperature 14 can be optimized and comfortable hot water can be used.
[0092]
【The invention's effect】
According to the combustion device of the present invention, when burning the correction gas, the correction gas calculated based on the feedforward combustion gas amount, and the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value The required number of combustion surfaces is selectively switched from among a plurality of combustion surfaces, and the correction gas is burned on the selected combustion surface to perform feedforward hot water supply combustion control, whereby the hot water outlet temperature is increased. It is possible to optimize the fluctuation of water and use comfortable hot water.
[0093]
Further, according to the combustion apparatus of the present invention, the correction gas calculated based on the feedforward combustion gas amount and the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value are used for the same selected combustion surface. And feed-forward hot-water combustion control is performed on the same selected combustion surface, and the selected combustion surface and the feedforward combustion gas amount that can supply the correction gas calculated based on the feedforward combustion gas amount The selected combustion surface that can supply the correction gas calculated based on the product of the correction combustion value and the correction combustion gas needs to be supplied using a different selection combustion surface. By selectively switching the selected combustion surface used for the next feed-forward hot water supply combustion control based on the surface and the retained heat, You can use a comfortable hot water to optimize the change of temperature.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing a combustion device according to an embodiment of the first invention or an embodiment of the second invention.
FIG. 2 is a graph showing a combustion characteristic of a correction gas and a temperature characteristic of a hot water supply in a feedforward hot water supply combustion control of a combustion device according to an embodiment of the first invention or an embodiment of the second invention. FIG.
FIG. 3 is a graph showing a combustion characteristic of a correction gas and a discharge temperature characteristic of hot water in feedforward hot water supply combustion control of the combustion device according to one embodiment of the first invention;
FIG. 4 is a correspondence chart used when selecting a selected combustion surface to be used for the next feedforward hot water supply combustion control with respect to the previous selected combustion surface and the retained heat amount in the combustion apparatus according to the embodiment of the second invention; It is.
FIG. 5 is a graph showing a combustion characteristic of a correction gas and a temperature characteristic of a hot water supply in a feedforward hot water supply combustion control of a conventional combustion device.
[Explanation of symbols]
10. Combustion device
12: Combustion surface
13 ... Selective combustion surface
14 ... Hot water temperature
15: Feed forward hot water supply combustion control
16. Combustion surface selection switching means
20 ... Correction gas
20a: Correction gas calculated based on the feedforward combustion gas amount
20b: Correction gas calculated based on the product of the feedforward combustion gas amount and the correction value
20c: Minimum correction gas that satisfies the feedforward hot water supply combustion control
24 ... Feed forward combustion gas amount
24a: Maximum correction gas amount combustible on the selected combustion surface capable of supplying the minimum correction gas satisfying the feedforward hot water supply combustion control
26 ... Correction value
30 ... Selection combustion surface storage means
30a ... Heat quantity
30b: predetermined amount of heat

Claims (2)

出湯時に、フィードフォワード燃焼ガス量と補正値とに基づいて算出した補正ガスを燃焼させる際に、複数の燃焼面の中から所要の面数の燃焼面を選択的に切替えるとともに、当該選択的に切替えられた選択燃焼面上で当該補正ガスを燃焼させて給湯の出湯温の変動を最適化するフィードフォワード給湯燃焼制御を実行する燃焼装置において、
前記補正ガスを燃焼させる際に、前記フィードフォワード燃焼ガス量に基づいて算出した前記補正ガス、および当該フィードフォワード燃焼ガス量と前記補正値との積に基づいて算出した前記補正ガスに応じて、複数の燃焼面の中から所要の面数の燃焼面を選択的に切替え、当該選択燃焼面上で当該補正ガスを燃焼させて前記フィードフォワード給湯燃焼制御を実行するものであって、
前記補正ガスを燃焼させる際に、複数の燃焼面の中から所要の面数の燃焼面を選択的に切替えるための燃焼面選択切替手段を備えて成り、
前記燃焼面選択切替手段は、
前記フィードフォワード燃焼ガス量に基づいて算出した前記補正ガス、および当該フィードフォワード燃焼ガス量と前記補正値との積に基づいて算出した前記補正ガスを同一の前記選択燃焼面を用いて供給可能な場合に、当該同一の選択燃焼面上で前記フィードフォワード給湯燃焼制御を実行し、
前記フィードフォワード燃焼ガス量に基づいて算出した補正ガスを供給可能な選択燃焼面と当該フィードフォワード燃焼ガス量と補正値の積に基づいて算出した補正ガスを供給可能な選択燃焼面とを異なる選択燃焼面を用いて供給する必要がある場合であって、さらにフィードフォワード給湯燃焼制御を満足させる最低限の補正ガスを供給可能な選択燃焼面とフィードフォワード燃焼ガス量に基づいて算出した補正ガスを供給可能な選択燃焼面が同一のときに、当該選択燃焼面で燃焼可能な最大の補正ガス量を所定時間だけ供給して前記フィードフォワード燃焼制御を実行し、
前記フィードフォワード燃焼ガス量に基づいて算出した補正ガスを供給可能な前記選択燃焼面と、当該フィードフォワード燃焼ガス量と補正値の積に基づいて算出した補正ガスを供給可能な前記選択燃焼面とを異なる前記選択燃焼面を用いて供給する必要がある場合であっても燃焼面を切替えることなく、前記フィードフォワード給湯燃焼制御を満足させるための前記補正ガスを供給可能な前記選択燃焼面と前記フィードフォワード燃焼ガス量と補正値の積に基づいて算出した補正ガスを供給可能な前記選択燃焼面とが同一のときに、当該フィードフォワード燃焼ガス量と補正値の積に基づいて算出した補正ガスを当該選択燃焼面に供給して前記フィードフォワード給湯燃焼制御を実行し、当該補正ガスが所定のガス量に達したとき、前記フィードフォワード燃焼ガス量に基づいて算出した補正ガスを供給可能な前記選択燃焼面に前記燃焼面を切替えるとともに、当該選択燃焼面に当該補正ガスを供給して前記フィードフォワード給湯燃焼制御を実行する、
ことを特徴とする燃焼装置。
At the time of tapping, when burning the correction gas calculated based on the feedforward combustion gas amount and the correction value, a required number of combustion surfaces are selectively switched from among a plurality of combustion surfaces, and the selectively In a combustion device that performs feedforward hot water supply combustion control for burning the correction gas on the switched selected combustion surface and optimizing the variation of the outlet temperature of the hot water,
When burning the correction gas, according to the correction gas calculated based on the feedforward combustion gas amount, and the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value, Selectively switching a required number of combustion surfaces from among a plurality of combustion surfaces, performing the feedforward hot water supply combustion control by burning the correction gas on the selected combustion surface,
When burning the correction gas, comprises a combustion surface selection switching means for selectively switching a required number of combustion surfaces from among a plurality of combustion surfaces,
The combustion surface selection switching means,
The correction gas calculated based on the feedforward combustion gas amount and the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value can be supplied using the same selected combustion surface. In this case, the feedforward hot water supply combustion control is executed on the same selected combustion surface,
Different selection between a selected combustion surface capable of supplying the correction gas calculated based on the feedforward combustion gas amount and a selected combustion surface capable of supplying the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value In the case where it is necessary to supply using the combustion surface, the correction gas calculated based on the selected combustion surface and the feedforward combustion gas amount that can supply the minimum correction gas that further satisfies the feedforward hot water supply combustion control is calculated. When the selectable combustion surface that can be supplied is the same, the feedforward combustion control is performed by supplying the maximum correction gas amount combustible on the selected combustion surface for a predetermined time,
The selected combustion surface capable of supplying a correction gas calculated based on the feedforward combustion gas amount, and the selected combustion surface capable of supplying a correction gas calculated based on a product of the feedforward combustion gas amount and the correction value. Even if it is necessary to supply using the different selected combustion surface, without switching the combustion surface, the selected combustion surface and the selected combustion surface capable of supplying the correction gas for satisfying the feedforward hot water supply combustion control When the selected combustion surface capable of supplying the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value is the same, the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value To the selected combustion surface to execute the feedforward hot water supply combustion control, and when the correction gas reaches a predetermined gas amount, the A correction gas calculated based on the over-forward amount of combustion gas with switching the combustion surface to the selected combustion surface that can be supplied, and supplies the corrected gas to perform the feedforward water heater combustion control to the selected combustion surface,
A combustion device characterized by the above-mentioned.
出湯時に、フィードフォワード燃焼ガス量と補正値とに基づいて算出した補正ガスを燃焼させる際に、複数の燃焼面の中から所要の面数の燃焼面を選択的に切替えるとともに、当該選択的に切替えられた選択燃焼面上で当該補正ガスを燃焼させて給湯の出湯温の変動を最適化するフィードフォワード給湯燃焼制御を実行する燃焼装置において、
前記補正ガスを燃焼させる際に、複数の燃焼面の中から所要の面数の燃焼面を選択的に切替えるための燃焼面選択切替手段と、
当該選択的に切替えられた選択燃焼面、または当該選択燃焼面上で前記フィードフォワード給湯燃焼制御を実行したときに発生する保有熱量を記憶可能な選択燃焼面記憶手段と、
を備えて成り、
前記燃焼面選択切替手段は、
前記フィードフォワード燃焼ガス量に基づいて算出した前記補正ガス、および当該前記フィードフォワード燃焼ガス量と前記補正値との積に基づいて算出した前記補正ガスを同一の前記選択燃焼面を用いて供給可能な場合に、当該同一の選択燃焼面上で前記フィードフォワード給湯燃焼制御を実行し、
前記フィードフォワード燃焼ガス量に基づいて算出した補正ガスを供給可能な前記選択燃焼面と、当該フィードフォワード燃焼ガス量と補正値の積に基づいて算出した補正ガスを供給可能な前記選択燃焼面とを異なる前記選択燃焼面を用いて供給する必要がある場合に、前記選択燃焼面記憶手段に記憶された前回の前記選択燃焼面並びに前記保有熱量に基づいて、次回の前記フィードフォワード給湯燃焼制御に用いる前記選択燃焼面の選択的な切替えを実行し、
さらに、前記燃焼面選択切替手段は、
前記選択燃焼面記憶手段に記憶された前記前回の保有熱量が所定熱量以上のときは、前記次回の選択燃焼面の選択面数を前記前回の選択燃焼面の選択面数より所定面数だけ少ない前記選択燃焼面を用いて前記次回のフィードフォワード給湯燃焼制御を実行し、
前記選択燃焼面記憶手段に記憶された前記前回の保有熱量が所定熱量未満のときは、前記次回の選択燃焼面の選択面数を前記前回の選択燃焼面の選択面数より所定面数だけ多い前記選択燃焼面を用いて前記次回のフィードフォワード給湯燃焼制御を実行する、
ことを特徴とする燃焼装置。
At the time of tapping, when burning the correction gas calculated based on the feedforward combustion gas amount and the correction value, a required number of combustion surfaces are selectively switched from among a plurality of combustion surfaces, and the selectively In a combustion device that performs feedforward hot water supply combustion control for burning the correction gas on the switched selected combustion surface and optimizing the variation of the outlet temperature of the hot water,
When burning the correction gas, a combustion surface selection switching means for selectively switching a required number of combustion surfaces from among a plurality of combustion surfaces,
The selected combustion surface selectively switched, or a selected combustion surface storage means capable of storing a retained heat amount generated when the feedforward hot water supply combustion control is performed on the selected combustion surface,
Comprising
The combustion surface selection switching means,
The correction gas calculated based on the feedforward combustion gas amount and the correction gas calculated based on the product of the feedforward combustion gas amount and the correction value can be supplied using the same selected combustion surface. In such a case, the feedforward hot water supply combustion control is executed on the same selected combustion surface,
The selected combustion surface capable of supplying a correction gas calculated based on the feedforward combustion gas amount, and the selected combustion surface capable of supplying a correction gas calculated based on a product of the feedforward combustion gas amount and the correction value. Is required to be supplied using a different selected combustion surface, based on the previous selected combustion surface and the retained heat amount stored in the selected combustion surface storage means, the next feedforward hot water supply combustion control Performing selective switching of the selected combustion surface to be used;
Further, the combustion surface selection switching means,
When the previously stored heat amount stored in the selected combustion surface storage means is equal to or more than a predetermined heat amount, the number of selected surfaces of the next selected combustion surface is smaller by a predetermined number of surfaces than the number of selected surfaces of the previous selected combustion surface. Using the selected combustion surface to execute the next feedforward hot water supply combustion control,
When the previous stored heat amount stored in the selected combustion surface storage means is less than a predetermined heat amount, the number of selected surfaces of the next selected combustion surface is increased by a predetermined number of surfaces from the number of selected surfaces of the previous selected combustion surface. Executing the next feedforward hot water supply combustion control using the selected combustion surface,
A combustion device characterized by the above-mentioned.
JP18011395A 1995-07-17 1995-07-17 Combustion equipment Expired - Fee Related JP3579513B2 (en)

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JP3579513B2 true JP3579513B2 (en) 2004-10-20

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JP4713784B2 (en) * 2001-08-22 2011-06-29 株式会社ハーマンプロ Water heater

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