JP2003294231A - Combustion equipment - Google Patents

Combustion equipment

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Publication number
JP2003294231A
JP2003294231A JP2002098087A JP2002098087A JP2003294231A JP 2003294231 A JP2003294231 A JP 2003294231A JP 2002098087 A JP2002098087 A JP 2002098087A JP 2002098087 A JP2002098087 A JP 2002098087A JP 2003294231 A JP2003294231 A JP 2003294231A
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JP
Japan
Prior art keywords
combustion
backwind
control
predetermined
temperature
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
Application number
JP2002098087A
Other languages
Japanese (ja)
Other versions
JP3748104B2 (en
Inventor
Yasunari Okuda
康成 奥田
Tatsuhiko Koda
達彦 好田
Hideya Nagao
英也 長尾
Kosaku Shirode
浩作 城出
Yasuo Nakanishi
康雄 中西
Akira Kidowaki
彰 木戸脇
Yoshihiko Tanaka
良彦 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noritz Corp
Original Assignee
Noritz Corp
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Priority to JP2002098087A priority Critical patent/JP3748104B2/en
Publication of JP2003294231A publication Critical patent/JP2003294231A/en
Application granted granted Critical
Publication of JP3748104B2 publication Critical patent/JP3748104B2/en
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Expired - Fee Related legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide combustion equipment which effects stable combustion even when against wind irregularly occurs. <P>SOLUTION: In the combustion equipment 1, an against wind detecting means 70 to detect the presence of against wind applied in the direction of the upper stream side on an exhaust gas flow passage 63 through which combustion gas burnt at a combustion part 3 is provided. When based on detection of the against wind detecting means 70, the occurrence of against wind is discriminated, a combustion amount in the combustion part and a feed air amount of a blower 16 are increased, and against wind corresponding control to reduce a low limit temperature at which automatic temperature holding for a storing part 6 is carried out is effected. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は燃焼装置に係り、更
に詳しくは、燃焼装置の排気口に強風が吹き付けて逆風
が生じた場合でも安定した燃焼制御を行う燃焼装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion device, and more particularly, to a combustion device that performs stable combustion control even when strong wind blows against the exhaust port of the combustion device to generate a back wind.

【０００２】[0002]

【従来の技術】近時、給湯や風呂の落とし込み、暖房運
転を行う燃焼装置が開発され普及している。このような
燃焼装置には、燃焼によって発生した熱を貯留部に貯留
した湯水や熱媒体と熱交換して加熱する貯湯式燃焼装置
や、燃焼によって発生した熱を通水パイプ内を流動する
水と熱交換して加熱する走水式燃焼装置などがある。こ
れらの燃焼装置は、通常、住戸外の壁面などに排気口を
外方や側方へ向けて設置される。2. Description of the Related Art Recently, a combustion apparatus for hot water supply, dropping in a bath, and heating operation has been developed and spread. Such a combustor includes a hot water storage type combustor that heats the heat generated by combustion by exchanging heat with hot water or a heat medium stored in a storage section, and water generated by combustion that flows in a water passage pipe. There is a running water combustion device that heats by exchanging heat with. These combustion devices are usually installed on the wall surface outside the dwelling unit with the exhaust ports facing outward or laterally.

【０００３】ところで、地上では殆ど風がない場合で
も、高層マンションなどの特に高層階では風が強く、２
０〜３０ｍ／ｓの強風が発生することも多い。このた
め、高層階の住戸のベランダやバルコニーに燃焼装置を
設置すると、排気口に向けて強風が吹き付け、排気流路
内に強風が逆流する逆風現象が生じる。逆風が生じる
と、排気ガスがスムーズに排出されずに排気閉塞状態に
陥り、不完全燃焼によって煤や有害ガスが発生して安定
した燃焼が阻害される。また、高層階などで生じる強風
は極めて不安定で、短時間に繰り返して発生することも
あれば、長時間継続することもある。このため、高層階
に設置された燃焼装置では、逆風が不規則に発生する環
境に晒され、安定した燃焼が一層阻害される要因となっ
ていた。By the way, even when there is almost no wind on the ground, the wind is strong especially on high floors such as high-rise apartments.
A strong wind of 0 to 30 m / s often occurs. Therefore, when the combustion device is installed on the balcony or balcony of the dwelling unit on the higher floor, a strong wind blows toward the exhaust port, causing a back wind phenomenon in which the strong wind flows backward in the exhaust passage. When headwind occurs, exhaust gas is not discharged smoothly and falls into an exhaust block state, soot and harmful gas are generated due to incomplete combustion, and stable combustion is hindered. In addition, strong winds generated on high floors are extremely unstable and may repeatedly occur in a short time or may continue for a long time. For this reason, in the combustion device installed on the upper floors, it is exposed to the environment in which the back wind is irregularly generated, which is a factor that further hinders stable combustion.

【０００４】[0004]

【発明が解決しようとする課題】そこで、逆風の発生を
検知することにより、逆風検知時には燃焼状態を切り換
えて、逆風に耐える燃焼を可能にした燃焼装置も試みら
れている。ところが、前記したように、逆風の発生が極
めて不規則なため、この様な燃焼装置では、逆風の発生
や停止に応じて逐一燃焼状態が切り換わり、安定した燃
焼制御を行うには更なる改良を要するものであった。本
発明は、このような事情に鑑みて提案されるもので、逆
風が不規則に頻発する場合でも安定した燃焼制御を行う
ことのできる燃焼装置を提供することを目的としてい
る。Therefore, there has been also attempted a combustion apparatus which detects the occurrence of a back wind and switches the combustion state when the back wind is detected to enable combustion to withstand the back wind. However, as described above, since the generation of backwind is extremely irregular, in such a combustion device, the combustion state is switched one by one according to the generation or stop of backwind, and further improvement is required to perform stable combustion control. Was required. The present invention is proposed in view of such circumstances, and an object of the present invention is to provide a combustion device capable of performing stable combustion control even when backwind occurs irregularly and frequently.

【０００５】[0005]

【課題を解決するための手段】前記目的を達成するため
に、本発明者らは以下の技術的手段を講じた。則ち、送
風機から供給される空気を燃料に混合して燃焼部で燃焼
させ、燃焼によって発生した熱を利用して貯留部に貯留
した湯水または熱媒体を加熱し、前記貯留部に貯留され
た湯水の温度を所定の温度に制御する燃焼装置におい
て、前記燃焼部で燃焼した燃焼ガスが排出される排気流
路に上流側へ向けて加わる逆風の有無を検知する逆風検
知手段を備え、該逆風検知手段の検知に基づいて逆風の
発生を判別したときは、燃焼要求に対して燃焼部におけ
る燃焼量を所定値まで増加させると共に、送風機の供給
空気量を増加させ、さらに貯留された湯水の温度の制御
値を変更する逆風対応制御が行われることを特徴とする
燃焼装置である。In order to achieve the above object, the present inventors have taken the following technical means. In other words, the air supplied from the blower is mixed with fuel and burned in the combustion section, and the hot water or heat medium stored in the storage section is heated by using the heat generated by the combustion, and stored in the storage section. In a combustion device for controlling the temperature of hot and cold water to a predetermined temperature, a backwind detecting means for detecting the presence or absence of backwind which is applied toward an upstream side in an exhaust flow path from which combustion gas burned in the combustion section is discharged is provided. When it is determined that the back wind is generated based on the detection of the detection means, the combustion amount in the combustion unit is increased to a predetermined value in response to the combustion request, the air supply amount of the blower is increased, and the temperature of the stored hot water is further increased. The combustion apparatus is characterized in that the control against the backwind is performed to change the control value of.

【０００６】本発明によれば、逆風の発生を判別する
と、燃焼量を増加させると共に供給空気量も燃焼量に見
合った量に増加させる。これにより、排気ガスの圧力が
増大し、排気流路を逆流しようとする逆風は排気ガスに
押し戻されて逆流が阻止される。従って、燃焼量が低い
場合に生じる排気閉塞が緩和されて安定した燃焼が可能
となる。According to the present invention, when the occurrence of the back wind is discriminated, the combustion amount is increased and the supply air amount is also increased to an amount commensurate with the combustion amount. As a result, the pressure of the exhaust gas increases, and the backflow that tries to backflow through the exhaust flow path is pushed back to the exhaust gas, and backflow is blocked. Therefore, exhaust gas blockage that occurs when the combustion amount is low is alleviated, and stable combustion is possible.

【０００７】本発明では前記したように、逆風の発生を
判別すると、燃焼部における燃焼量および空気供給量を
増加させる逆風対応制御が行われる。従って、定常時に
比べて逆風の発生時は貯留部に貯留された湯水や熱媒体
は短時間に加熱されて上限温度まで上昇する。このた
め、逆風の発生時は例えば貯留部の自動保温のために頻
繁に燃焼および燃焼停止が繰り返され、燃焼装置の耐久
性に支障を生じる。In the present invention, as described above, when the occurrence of backwind is discriminated, the backwind handling control for increasing the combustion amount and the air supply amount in the combustion section is performed. Therefore, as compared with the steady state, when the back wind occurs, the hot water and the heat medium stored in the storage unit are heated in a short time and rise to the upper limit temperature. Therefore, when a back wind is generated, for example, combustion and combustion stop are frequently repeated for the purpose of automatically keeping the temperature of the storage portion, which impairs the durability of the combustion device.

【０００８】しかし、本発明によれば、逆風の発生時に
は貯留された湯水の温度の制御値が変更されるので、燃
焼および燃焼停止の頻度を低減させ、燃焼装置の耐久性
を向上させることができる。However, according to the present invention, since the control value of the temperature of the hot water stored is changed when the back wind is generated, the frequency of combustion and combustion stop can be reduced and the durability of the combustion apparatus can be improved. it can.

【０００９】なお逆風検知手段には種々の構成を採用す
ることができる。例えば、所定の空気圧力を印加すると
常閉接点を開成する風圧スイッチを用い、排気流路の排
気口近傍に固定された検圧管と風圧スイッチとを接続管
で繋いだ構成を採ることができる。この構成によれば、
逆風停止状態では常閉接点が閉成している。そして、排
気口の近傍に強風が吹き込むと検圧管に加わる空気圧力
が接続管を介して風圧スイッチに加わり、常閉接点が開
成して逆風状態を検知することができる。Various configurations can be adopted for the backwind detecting means. For example, it is possible to adopt a configuration in which a wind pressure switch that opens a normally closed contact when a predetermined air pressure is applied is used, and a pressure detection tube fixed near the exhaust port of the exhaust flow path and a wind pressure switch are connected by a connection tube. According to this configuration,
The normally closed contact is closed when headwind is stopped. Then, when a strong wind blows in the vicinity of the exhaust port, the air pressure applied to the pressure detecting tube is applied to the wind pressure switch via the connecting tube, and the normally closed contact is opened to detect the backwind state.

【００１０】また、逆風検知手段は、燃焼部で燃焼した
燃焼ガスが排出される排気流路に上流側へ向けて加わる
所定圧力を有する逆風の有無を検知する構成を採ること
ができる。則ち、風圧スイッチを用いる構成では、検知
する逆風の圧力（風速）を予め設定することも可能であ
る。この構成によれば、例えば、２０ｍ／ｓの風速の逆
風を検知したときに風速３０ｍ／ｓの逆風に耐える燃焼
を行わせるような逆風対応制御を行うことができ、逆風
の風速が急上昇した場合でも安定した燃焼を行うことが
可能となる。Further, the backwind detecting means may be configured to detect the presence or absence of backwind having a predetermined pressure which is applied toward the upstream side in the exhaust passage through which the combustion gas burned in the combustion section is discharged. In other words, in the configuration using the wind pressure switch, it is possible to preset the pressure (wind speed) of the counter wind to be detected. According to this configuration, for example, when the back wind with the wind speed of 20 m / s is detected, it is possible to perform the back wind handling control such that the combustion withstanding the back wind with the wind speed of 30 m / s is performed. However, it becomes possible to perform stable combustion.

【００１１】請求項２に記載の発明は、送風機から供給
される空気を燃料に混合して燃焼部で燃焼させ、燃焼に
よって発生した熱を利用して貯留部に貯留した湯水また
は熱媒体を加熱し、前記貯留部に貯留された湯水の温度
が所定の下限温度まで低下すると燃焼を開始する一方、
湯水の温度が所定の上限温度まで上昇すると燃焼を停止
して貯留部に貯留した湯水または熱媒体の温度を制御す
る燃焼装置において、前記燃焼部で燃焼した燃焼ガスが
排出される排気流路に上流側へ向けて加わる逆風の有無
を検知する逆風検知手段を備え、該逆風検知手段の検知
に基づいて逆風の発生を判別したときは、燃焼要求に対
して燃焼部における燃焼量を所定値まで増加させると共
に、送風機の供給空気量を増加させ、さらに前記燃焼が
開始される下限温度よりも低い別の下限温度に切換設定
する逆風対応制御が行われることを特徴とする燃焼装置
である。According to a second aspect of the present invention, the air supplied from the blower is mixed with fuel and burned in the combustion section, and the heat generated by the combustion is used to heat the hot water or the heat medium stored in the storage section. Then, while the temperature of the hot water stored in the storage section drops to a predetermined lower limit temperature, combustion is started,
In a combustion device that controls the temperature of the hot water or the heat medium stored in the storage unit by stopping the combustion when the temperature of the hot water rises to a predetermined upper limit temperature, an exhaust flow path through which the combustion gas burned in the combustion unit is discharged A backwind detecting means for detecting the presence or absence of backwind applied toward the upstream side is provided, and when the occurrence of backwind is discriminated based on the detection of the backwind detecting means, the combustion amount in the combustion section is set to a predetermined value in response to the combustion request. The combustion apparatus is characterized in that the amount of air supplied to the blower is increased, and further, the backflow control is performed to switch and set to another lower limit temperature lower than the lower limit temperature at which the combustion is started.

【００１２】本発明においても逆風の発生を判別する
と、燃焼量を増加させると共に供給空気量も燃焼量に見
合った量に増加させる。これにより、排気ガスの圧力が
増大し、排気流路を逆流しようとする逆風は排気ガスに
押し戻されて逆流が阻止される。従って、燃焼量が低い
場合に生じる排気閉塞が緩和されて安定した燃焼が可能
となる。また本発明では、逆風の発生時には温度制御に
おける下限温度を所定値だけ低下させた別の下限温度に
切換設定して下限温度と上限温度との温度幅を拡大する
制御を付加する。これにより、貯留部に貯留された湯水
や熱媒体を下限温度から上限温度まで上昇させる時間が
増大し、逆風状態における貯留部の自動保温のための燃
焼および燃焼停止の頻度が低減して、燃焼装置の耐久性
を向上させることができる。Also in the present invention, when the generation of the back wind is discriminated, the combustion amount is increased and the supply air amount is also increased to an amount commensurate with the combustion amount. As a result, the pressure of the exhaust gas increases, and the backflow that tries to backflow through the exhaust flow path is pushed back to the exhaust gas, and backflow is blocked. Therefore, exhaust gas blockage that occurs when the combustion amount is low is alleviated, and stable combustion is possible. Further, in the present invention, when the back wind occurs, the lower limit temperature in the temperature control is switched to another lower limit temperature which is lowered by a predetermined value, and the control for expanding the temperature range between the lower limit temperature and the upper limit temperature is added. As a result, the time for raising the hot water and heat medium stored in the storage unit from the lower limit temperature to the upper limit temperature increases, and the frequency of combustion and combustion stop for automatic heat retention of the storage unit in the headwind condition decreases, The durability of the device can be improved.

【００１３】本発明は、逆風状態であって、給湯が行わ
れていない場合に適用するのが好適である。例えば自動
保温機能を有する燃焼装置に本発明を適用する場合は、
逆風状態であって、給湯が停止し暖房運転あるいは貯留
部の自動保温の燃焼制御が行われている際（停水焚き上
げ時）に適用するのが好適である。これは、給湯時に貯
留部の保温の下限温度を低下させると給湯の温度変動が
増大して使い勝手に支障を生じるためである。一方、暖
房運転中や停水焚き上げ時は、給湯時のように直接的な
温度変動の支障を受け難く、下限温度を低下することに
よって燃焼および燃焼停止の頻度を効果的に低減可能で
ある。The present invention is preferably applied in a headwind condition and when hot water is not supplied. For example, when applying the present invention to a combustion device having an automatic heat retention function,
It is suitable to be applied when the hot water supply is stopped and the heating operation or the combustion control of the automatic heat retention of the storage portion is being performed in the headwind state (when the water is stopped and heated). This is because if the lower limit temperature of the heat retention of the storage part is lowered during hot water supply, the temperature fluctuation of the hot water supply increases, and the usability is impaired. On the other hand, during heating operation or when heating with stopped water, it is less likely to be affected by direct temperature fluctuations like during hot water supply, and the frequency of combustion and combustion stop can be effectively reduced by lowering the lower limit temperature. .

【００１４】また請求項３に記載の発明は、送風機から
供給される空気を燃料に混合して燃焼部で燃焼させ、燃
焼によって発生した熱を利用して貯留部に貯留した湯水
または熱媒体を加熱し、前記貯留部に貯留された湯水の
温度が所定の温度制御幅に納まる様に制御する燃焼装置
において、前記燃焼部で燃焼した燃焼ガスが排出される
排気流路に上流側へ向けて加わる逆風の有無を検知する
逆風検知手段を備え、該逆風検知手段の検知に基づいて
逆風の発生を判別したときは、燃焼要求に対して燃焼部
における燃焼量を所定値まで増加させると共に、該燃焼
量に応じて送風機の供給空気量を増加させ、さらに前記
温度制御幅を拡大する逆風対応制御が行われることを特
徴とする燃焼装置である。Further, in the invention according to claim 3, the air supplied from the blower is mixed with the fuel and burned in the combustion part, and the hot water or heat medium stored in the storage part is utilized by utilizing the heat generated by the combustion. In a combustion device that controls so that the temperature of the hot water stored in the storage portion is heated within a predetermined temperature control range, in an exhaust flow path from which the combustion gas burned in the combustion portion is discharged, the upstream side is discharged. A backwind detecting means for detecting the presence or absence of added backwind is provided, and when the occurrence of backwind is determined based on the detection of the backwind detecting means, the combustion amount in the combustion unit is increased to a predetermined value in response to the combustion request, and This is a combustion device characterized in that the amount of air supplied to the blower is increased in accordance with the amount of combustion, and the control for counterwinding that expands the temperature control width is performed.

【００１５】本発明においても逆風の発生を判別する
と、燃焼量を増加させると共に供給空気量も燃焼量に見
合った量に増加させる。これにより、排気ガスの圧力が
増大し、排気流路を逆流しようとする逆風は排気ガスに
押し戻されて逆流が阻止される。従って、燃焼量が低い
場合に生じる排気閉塞が緩和されて安定した燃焼が可能
となる。また本発明では、逆風の発生時には温度制御幅
を拡大するので貯留部に貯留された湯水や熱媒体を上昇
させるのに要する時間が増大し、逆風状態における貯留
部の自動保温のための燃焼および燃焼停止の頻度が低減
して、燃焼装置の耐久性を向上させることができる。Also in the present invention, when it is determined that the back wind is generated, the combustion amount is increased and the supply air amount is also increased to an amount commensurate with the combustion amount. As a result, the pressure of the exhaust gas increases, and the backflow that tries to backflow through the exhaust flow path is pushed back to the exhaust gas, and backflow is blocked. Therefore, exhaust gas blockage that occurs when the combustion amount is low is alleviated, and stable combustion is possible. Further, in the present invention, since the temperature control width is expanded when a back wind occurs, the time required to raise the hot water and the heat medium stored in the storage unit increases, and the combustion and automatic heat retention of the storage unit in the back wind state and The frequency of combustion stop can be reduced, and the durability of the combustion device can be improved.

【００１６】また請求項４に記載の発明は、送風機から
供給される空気を燃料に混合して燃焼部で燃焼させ、燃
焼によって発生した熱を利用して貯留部に貯留した湯水
または熱媒体を加熱し、前記貯留部に貯留された湯水の
温度が所定の温度制御幅に納まる様に制御する燃焼装置
において、前記燃焼部で燃焼した燃焼ガスが排出される
排気流路に上流側へ向けて加わる逆風の有無を検知する
逆風検知手段を備え、該逆風検知手段の検知に基づいて
逆風の発生を判別したときは、燃焼要求に対して燃焼部
における燃焼量を所定値まで増加させると共に、該燃焼
量に応じて送風機の供給空気量を増加させ、さらに前記
温度制御幅の上限を上方にシフトさせ、及び／又は下限
を下方にシフトさせる逆風対応制御が行われることを特
徴とする燃焼装置である。Further, in the invention according to claim 4, the air supplied from the blower is mixed with fuel and burned in the combustion part, and the hot water or heat medium stored in the storage part is utilized by utilizing the heat generated by the combustion. In a combustion device that controls so that the temperature of the hot water stored in the storage portion is heated within a predetermined temperature control range, in an exhaust flow path from which the combustion gas burned in the combustion portion is discharged, the upstream side is discharged. A backwind detecting means for detecting the presence or absence of added backwind is provided, and when the occurrence of backwind is determined based on the detection of the backwind detecting means, the combustion amount in the combustion unit is increased to a predetermined value in response to the combustion request, and Combustion apparatus, wherein the amount of air supplied to the blower is increased according to the amount of combustion, the upper limit of the temperature control width is shifted upward, and / or the lower limit is shifted downward, which is a counterwinding control. A.

【００１７】本発明においても逆風の発生を判別する
と、燃焼量を増加させると共に供給空気量も燃焼量に見
合った量に増加させる。これにより、排気ガスの圧力が
増大し、排気流路を逆流しようとする逆風は排気ガスに
押し戻されて逆流が阻止される。従って、燃焼量が低い
場合に生じる排気閉塞が緩和されて安定した燃焼が可能
となる。また本発明では、逆風の発生時には温度制御幅
をシフトするので貯留部に貯留された湯水や熱媒体を上
昇させるのに要する時間が増大し、逆風状態における貯
留部の自動保温のための燃焼および燃焼停止の頻度が低
減して、燃焼装置の耐久性を向上させることができる。Also in the present invention, when it is determined that the back wind is generated, the combustion amount is increased and the supply air amount is also increased to an amount commensurate with the combustion amount. As a result, the pressure of the exhaust gas increases, and the backflow that tries to backflow through the exhaust flow path is pushed back to the exhaust gas, and backflow is blocked. Therefore, exhaust gas blockage that occurs when the combustion amount is low is alleviated, and stable combustion is possible. Further, in the present invention, since the temperature control width is shifted when a back wind is generated, the time required to raise the hot water and the heat medium stored in the storage unit is increased, and the combustion for the automatic heat retention of the storage unit in the back wind state and The frequency of combustion stop can be reduced, and the durability of the combustion device can be improved.

【００１８】また請求項５に記載の発明は、前記逆風検
知手段が予め定められた逆風判別時間だけ継続して逆風
状態を検知したときは、逆風対応制御が行われ、前記逆
風検知手段が予め定められた定常判別時間だけ継続して
逆風停止状態を検知したときは、通常燃焼制御に移行す
ることを特徴とする請求項１乃至４のいずれか１項に記
載の燃焼装置である。According to a fifth aspect of the present invention, when the backwind detecting means continuously detects a backwind state for a predetermined backwind determining time, the backwind handling control is performed, and the backwind detecting means preliminarily operates. The combustion apparatus according to any one of claims 1 to 4, wherein when the backflow stop state is continuously detected for a predetermined steady-state determination time, the normal combustion control is performed.

【００１９】逆風が生じても短時間であれば燃焼に与え
る影響は少ないので、このような短時間の逆風に対して
逆風の判別を行わないのが望ましい。本発明によれば、
燃焼に影響を及ぼさないような短時間の逆風が検知され
ても逆風として判別しない。これにより、逆風対応制御
と通常燃焼制御とが頻繁に切り換わるような不具合を除
去することができ、安定した燃焼制御を行うことが可能
である。また本発明によれば、定常判別時間よりも短い
間隔で逆風が頻繁に生じている場合には逆風の停止の判
別を行わず、逆風の発生頻度が低減して定常判別時間よ
りも長い間隔になれば逆風の停止を判別する。これによ
り、逆風の発生頻度の低下を的確に判別して逆風対応制
御を解除することができ、逆風を逐一判別して逆風対応
制御と通常燃焼制御とが頻繁に切り換わるような不具合
を除去することができる。Even if a backwind occurs, it has a small effect on combustion for a short time. Therefore, it is desirable not to determine the backwind for such a short time backwind. According to the invention,
Even if a short-time headwind that does not affect combustion is detected, it is not determined as headwind. As a result, it is possible to eliminate a problem in which the control against the counterwind and the normal combustion control frequently switch, and it is possible to perform stable combustion control. Further, according to the present invention, when the backwind is frequently generated at intervals shorter than the steady determination time, the determination of the stop of the backwind is not performed, and the occurrence frequency of the backwind is reduced to the interval longer than the steady determination time. If so, it is determined that headwind has stopped. As a result, it is possible to accurately determine the decrease in the occurrence frequency of the backwind and cancel the backwind handling control, and to eliminate the problem that the backwind handling control and the normal combustion control are frequently switched by discriminating the backwind. be able to.

【００２０】請求項６に記載の本発明は、前記逆風検知
手段が、所定の判別時間内に所定の検知回数だけ逆風停
止状態から逆風状態への変動を検知したときは、所定の
逆風対応制御に切り換わり、続いて逆風の停止を検知し
た時点から予め定められた待機時間だけ逆風対応制御を
継続し、その後に通常燃焼制御に移行することを特徴と
する請求項１乃至５のいずれか１項に記載の燃焼装置で
ある。According to a sixth aspect of the present invention, when the backwind detecting means detects a change from the backwind stopped state to the backwind state a predetermined number of times within a predetermined determination time, a predetermined backwind handling control is performed. 6. Then, the control for switching backwind is continued for a predetermined standby time from the time when the stop of backwind is detected, and then the normal combustion control is performed. The combustion device according to the item.

【００２１】また請求項８に記載の発明も同趣旨の発明
であり、請求項８に記載の発明は、燃焼部で燃焼した燃
焼ガスが排出される排気流路に上流側へ向けて加わる逆
風の有無を検知する逆風検知手段を備えた燃焼装置にお
いて、前記逆風検知手段が、所定の判別時間内に所定の
検知回数だけ逆風停止状態から逆風状態への変動を検知
したときは、所定の逆風対応制御に切り換わり、続いて
逆風の停止を検知した時点から予め定められた待機時間
だけ逆風対応制御を継続し、その後に通常燃焼制御に移
行することを特徴とする燃焼装置である。ここで請求項
８でいう逆風対応制御には、例えば燃焼を停止する様な
ものも含む。後記する請求項９についても同様である。The invention described in claim 8 is also an invention to the same effect, and in the invention described in claim 8, the backflow applied toward the upstream side in the exhaust passage through which the combustion gas burned in the combustion part is discharged. In the combustion apparatus having the backwind detecting means for detecting the presence or absence of the backwind, when the backwind detecting means detects a change from the backwind stopped state to the backwind state for a predetermined number of detections within a predetermined determination time, a predetermined backwind is detected. The combustion device is characterized in that the control is switched to the corresponding control, and subsequently, the control against the counterwind is continued for a predetermined standby time from the time when the stop of the counterwind is detected, and then the normal combustion control is performed. Here, the control against the backwind referred to in claim 8 includes, for example, a control for stopping combustion. The same applies to claim 9 described later.

【００２２】則ち、本発明は、逆風の断続が頻繁に生じ
ると推測される判別条件を規定して、頻繁に生じると判
別した場合には、逆風対応制御を所定の待機時間だけ延
長するものである。本発明によれば、逆風の発生状況を
的確に判別することにより、頻繁に逆風が生じる期間は
逆風対応制御を継続させて逆風対応制御と通常燃焼制御
が頻繁に切り換わることを抑えることができ、安定した
燃焼制御が可能となる。In other words, the present invention defines the judgment condition in which it is presumed that the back wind is intermittently frequent, and when it is judged that the back wind is frequently interrupted, the back wind countermeasure control is extended by a predetermined waiting time. Is. According to the present invention, it is possible to suppress the frequent switching between the backwind handling control and the normal combustion control by continuing the backwind handling control during the period in which the backwind frequently occurs by accurately determining the occurrence state of the backwind. Therefore, stable combustion control becomes possible.

【００２３】また、請求項７に記載の本発明は、前記逆
風検知手段が、所定の判別時間内に所定の検知回数だけ
逆風停止状態から逆風状態への変動を検知したときは、
所定の逆風対応制御に切り換わり、それ以降に、予め定
められた定常判別時間だけ継続して逆風停止状態を検知
したときには逆風対応制御を解除して通常燃焼制御に移
行することを特徴とする請求項１乃至６のいずれか１項
に記載の燃焼装置である。According to the present invention of claim 7, when the backwind detecting means detects a change from the backwind stopped state to the backwind state for a predetermined number of detections within a predetermined determination time,
The control is switched to a predetermined headwind response control, and thereafter, when the headwind stop state is continuously detected for a predetermined steady-state determination time, the headwind response control is canceled and the normal combustion control is performed. Item 7. A combustion device according to any one of items 1 to 6.

【００２４】また請求項９に記載の発明も同趣旨の発明
であり、請求項９に記載の発明は、燃焼部で燃焼した燃
焼ガスが排出される排気流路に上流側へ向けて加わる逆
風の有無を検知する逆風検知手段を備えた燃焼装置にお
いて、前記逆風検知手段が、所定の判別時間内に所定の
検知回数だけ逆風停止状態から逆風状態への変動を検知
したときは、所定の逆風対応制御に切り換わり、それ以
降に、予め定められた定常判別時間だけ継続して逆風停
止状態を検知したときには逆風対応制御を解除して通常
燃焼制御に移行することを特徴とする請求項１乃至６の
いずれか１項に記載の燃焼装置である。The invention described in claim 9 is also an invention to the same effect, and in the invention described in claim 9, the backflow applied toward the upstream side in the exhaust passage through which the combustion gas burned in the combustion part is discharged. In the combustion apparatus having the backwind detecting means for detecting the presence or absence of the backwind, when the backwind detecting means detects a change from the backwind stopped state to the backwind state for a predetermined number of detections within a predetermined determination time, a predetermined backwind is detected. The control is switched to the corresponding control, and thereafter, when the backwind stop state is continuously detected for a predetermined steady state determination time, the backwind corresponding control is canceled and the normal combustion control is performed. The combustion apparatus according to any one of 6 above.

【００２５】則ち、本発明は、逆風の断続が頻繁に生じ
ると推測される判別条件を規定して、頻繁に生じると判
別した場合には、更に、逆風の停止を判別する際の条件
を規定するものである。本発明においても、逆風の発生
状況を的確に判別することにより、頻繁に逆風が生じる
期間は逆風対応制御を継続させる。これにより、逆風対
応制御と通常燃焼制御が頻繁に切り換わることを抑える
ことができ、安定した燃焼制御が可能となる。That is, according to the present invention, the determination condition is presumed that the intermittent back wind is frequently generated, and when it is determined that the frequent back wind is intermittent, the condition for determining the stop of the back wind is further determined. It stipulates. In the present invention as well, the headwind response control is continued during a period in which headwind frequently occurs by accurately determining the state of headwind generation. As a result, it is possible to suppress frequent switching between the headwind response control and the normal combustion control, and stable combustion control becomes possible.

【００２６】また請求項１０に記載の発明は、逆風検知
手段に代わって風の有無を検知する風検知手段を使用
し、当該風検知手段が所定の強さの風を検知したときに
逆風の発生と判別することを特徴とする請求項１乃至９
のいずれかに１項に記載の燃焼装置である。According to a tenth aspect of the present invention, a wind detecting means for detecting the presence or absence of wind is used in place of the back wind detecting means, and when the wind detecting means detects a wind having a predetermined strength, the wind is detected. 10. It is determined that the occurrence has occurred.
The combustion apparatus according to item 1.

【００２７】本発明は、逆風検知手段に代わって風の有
無を検知する風検知手段を使用するものである。則ち風
検知手段によって一定値以上の強風を検知した場合は、
逆風が発生するものと擬制して逆風対応制御に移行す
る。The present invention uses wind detecting means for detecting the presence or absence of wind instead of the backwind detecting means. In other words, when strong wind above a certain value is detected by the wind detection means,
The control shifts to the control against the backwind by assuming that the backwind is generated.

【００２８】[0028]

【発明の実施の形態】以下に、図面を参照して本発明の
実施形態の燃焼装置を詳細に説明する。 （第１実施形態）図１は第１実施形態の燃焼装置１の内
部構造を示す正面図および側面図、図２は図１に示す燃
焼装置１の流水回路図、図３は図１に示す燃焼装置１の
制御系の要部構成を示すブロック図、図４は図１に示す
燃焼装置１の逆風の判別および逆風対応制御の動作を示
すフローチャート、図５は図４の動作を示すタイミング
チャートである。ここで、本実施形態の燃焼装置１の制
御動作の説明に際しては、燃焼装置１の構成を把握する
必要がある。そこで、動作説明に先立って燃焼装置１の
基本構成を説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a combustion apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. (First Embodiment) FIG. 1 is a front view and a side view showing an internal structure of a combustion apparatus 1 of the first embodiment, FIG. 2 is a running water circuit diagram of the combustion apparatus 1 shown in FIG. 1, and FIG. 3 is shown in FIG. FIG. 4 is a block diagram showing a configuration of a main part of a control system of the combustion apparatus 1, FIG. 4 is a flow chart showing operations of discrimination and headwind response control of the combustion apparatus 1 shown in FIG. Is. Here, in describing the control operation of the combustion device 1 of the present embodiment, it is necessary to understand the configuration of the combustion device 1. Therefore, the basic configuration of the combustion device 1 will be described prior to the description of the operation.

【００２９】燃焼装置１は、図１，図２の様に、本体部
２、燃焼部３および消音器４により構成される。本体部
２は、大きく燃焼空間部５と貯留部６とに分かれてい
る。燃焼部３と燃焼空間部５とは、貯留部６内に貯留さ
れる熱媒体を加熱する加熱手段７として機能する。本体
部２は、全体形状が円筒形であり、２重構造となってい
て内部に貯留部６が形成されている。より具体的には、
本体部２は外筒８と内筒９とを有し、その内部に熱媒体
を貯留できる構造を有する。また、本体部２の上半分に
は、上鏡板１０と下鏡板１１とによって囲まれた大容量
の熱媒体室１２が形成されている。As shown in FIGS. 1 and 2, the combustion device 1 is composed of a main body portion 2, a combustion portion 3 and a silencer 4. The main body portion 2 is roughly divided into a combustion space portion 5 and a storage portion 6. The combustion unit 3 and the combustion space unit 5 function as a heating unit 7 that heats the heat medium stored in the storage unit 6. The main body 2 has a cylindrical overall shape, has a double structure, and has a reservoir 6 formed therein. More specifically,
The main body 2 has an outer cylinder 8 and an inner cylinder 9 and has a structure capable of storing a heat medium inside. A large capacity heat medium chamber 12 surrounded by an upper mirror plate 10 and a lower mirror plate 11 is formed in the upper half of the main body 2.

【００３０】熱媒体室１２には、複数の燃焼ガス通路１
３が形成されている。燃焼ガス通路１３は、貯留部６の
熱媒体室１２を軸方向に貫通する貫通孔である。また、
燃焼部３は、灯油等の液体燃料の燃焼を行うバーナを備
えており、燃料噴射ノズル１５が内蔵されている。ま
た、燃焼部３は、送風機１６を具備しており、本体部２
の下方に位置する燃焼空間部５に接続されている。燃焼
空間部５は、燃焼部３の燃焼室として機能する。A plurality of combustion gas passages 1 are provided in the heat medium chamber 12.
3 is formed. The combustion gas passage 13 is a through hole that penetrates the heat medium chamber 12 of the storage portion 6 in the axial direction. Also,
The combustion unit 3 includes a burner that burns liquid fuel such as kerosene, and has a fuel injection nozzle 15 built therein. Further, the combustion unit 3 includes a blower 16, and the main body 2
Is connected to the combustion space 5 located below. The combustion space section 5 functions as a combustion chamber of the combustion section 3.

【００３１】一方、本体部２の上部には、消音器４が設
けられている。消音器４は、外観が円筒状または直方体
状で、内部がラビリンス構造となっており、燃焼空間部
５で燃焼した燃焼ガスをラビリンスで減圧しつつ排気し
て燃焼音を低減させるものである。尚、図１，図２で
は、消音器４のラビリンス構造を省略している。On the other hand, a muffler 4 is provided above the main body 2. The muffler 4 has a cylindrical or rectangular parallelepiped appearance and a labyrinth structure inside, and reduces the combustion noise by exhausting the combustion gas combusted in the combustion space portion 5 while decompressing it with the labyrinth. 1 and 2, the labyrinth structure of the silencer 4 is omitted.

【００３２】また、図１，図２の様に、消音器４の下流
側端部に位置する排気口６３の近傍には逆風検知手段７
０が設けられている。逆風検知手段７０は、排気口６３
に固定された検圧管７１と、排気流路外に設けられた風
圧スイッチ７２と、これらの検圧管７１および風圧スイ
ッチ７２を繋ぐ接続チューブ７３で構成される。As shown in FIGS. 1 and 2, the backwind detecting means 7 is provided near the exhaust port 63 located at the downstream end of the silencer 4.
0 is provided. The headwind detecting means 70 has an exhaust port 63.
And a wind pressure switch 72 provided outside the exhaust flow path, and a connecting tube 73 connecting the pressure detection pipe 71 and the wind pressure switch 72.

【００３３】検圧管７１は、金属製の円筒管で開口を排
気口６３の外方へ向けて排気流路内の右端に固定されて
いる。また、風圧スイッチ７２は、図３の様に、常閉接
点７２ａと開口７２ｂを有し、開口７２ｂに所定の空気
圧力を印加することにより常閉接点７２ａを開成する圧
力検知スイッチである。また、接続チューブ７３はシリ
コーンゴムで製され、高温に晒される検圧管７１と排気
流路外に位置する風圧スイッチ７２の開口７２ｂとを接
続して検圧管７１の受ける空気圧力を風圧スイッチ７２
へ伝達する機能を有する。The pressure detecting pipe 71 is a metal cylindrical pipe and is fixed to the right end in the exhaust passage with its opening facing the outside of the exhaust port 63. Further, as shown in FIG. 3, the wind pressure switch 72 is a pressure detection switch that has a normally closed contact 72a and an opening 72b, and opens the normally closed contact 72a by applying a predetermined air pressure to the opening 72b. The connection tube 73 is made of silicone rubber, and connects the pressure detection pipe 71 exposed to high temperature with the opening 72b of the wind pressure switch 72 located outside the exhaust flow path to control the air pressure received by the pressure detection pipe 71.
It has the function of transmitting to.

【００３４】この燃焼装置１では、図２の様に、燃焼部
３の燃料噴射ノズル１５から噴射された燃料は、燃焼空
間部５内において燃焼し、高温の燃焼ガスと火炎とを発
生する。燃焼ガスは、熱媒体室１２内の燃焼ガス通路１
３を流れ、消音器４を通過した後、外部に排出される。
熱媒体室１２内の熱媒体は、燃焼ガス通路１３を流れる
高温の燃焼ガスにより加熱され昇温する。In this combustion apparatus 1, as shown in FIG. 2, the fuel injected from the fuel injection nozzle 15 of the combustion section 3 burns in the combustion space section 5 to generate high temperature combustion gas and flame. The combustion gas passes through the combustion gas passage 1 in the heat medium chamber 12.
After passing through the muffler 4, the muffler 4 is discharged to the outside.
The heat medium in the heat medium chamber 12 is heated by the high-temperature combustion gas flowing through the combustion gas passage 13 and rises in temperature.

【００３５】貯留部６には、熱媒体として不凍液が貯留
され、貯留部６の内部には、コイル状の熱交換器１７，
１８が内蔵されている。熱交換器１７には第１流水回路
２０が接続され、熱交換器１８には第２流水回路２１が
接続されている。また、貯留部６には、貯留部６内で加
熱された熱媒体が循環する負荷回路２２が接続されて暖
房運転の機能を構成している。An antifreeze liquid is stored in the storage section 6 as a heat medium. Inside the storage section 6, a coiled heat exchanger 17,
18 is built in. A first running water circuit 20 is connected to the heat exchanger 17, and a second running water circuit 21 is connected to the heat exchanger 18. Further, a load circuit 22 in which a heat medium heated in the storage section 6 circulates is connected to the storage section 6 to configure a function of heating operation.

【００３６】第１流水回路２０は、カランなどに接続さ
れ外部に湯水を流出する給湯回路である。第１流水回路
２０は、熱交換器１７に外部から水を給水する給水回路
２３と、熱交換器１７で加熱された湯水が流れ出る高温
湯回路２５と、給水回路２３から分岐された流水バイパ
ス回路２６とを有し、要求に応じて外部に湯水を供給す
る。そして流水バイパス回路２６を流れる冷水のバイパ
ス水量と高温湯回路２５に流れる高温の湯水の量とをバ
イパス水量調節弁２７によって調節し、これらの湯水を
混合して湯水の温度を調節する。また高温湯回路２５と
流水バイパス回路２６との混合部分の下流側には、給湯
回路２９が接続されている。給湯回路２９には、水量調
節弁２８と出湯温度センサ３０が設けられ、出湯温度セ
ンサ３０の検知温度が前記したバイパス水量調節弁２７
等にフィードバックされると共に、水量調節弁２８によ
って総水量が調節される。給水回路２３には、水量セン
サ３１と水温センサ３２が設けられ、高温湯の温度が８
０℃程度となる様に燃焼部３の燃焼量が調節される。The first running water circuit 20 is a hot water supply circuit that is connected to a curran or the like and flows hot water to the outside. The first running water circuit 20 includes a water supply circuit 23 for supplying water to the heat exchanger 17 from the outside, a high-temperature hot water circuit 25 from which hot water heated by the heat exchanger 17 flows out, and a running water bypass circuit branched from the water supply circuit 23. 26, and supplies hot water to the outside on demand. Then, the bypass water amount of the cold water flowing through the flowing water bypass circuit 26 and the amount of high-temperature hot water flowing in the high-temperature hot water circuit 25 are adjusted by the bypass water amount adjusting valve 27, and these hot and cold waters are mixed to adjust the temperature of the hot and cold water. A hot water supply circuit 29 is connected to the downstream side of the mixed portion of the high temperature hot water circuit 25 and the flowing water bypass circuit 26. The hot water supply circuit 29 is provided with a water amount adjusting valve 28 and a hot water temperature sensor 30, and the bypass water amount adjusting valve 27 whose temperature detected by the hot water temperature sensor 30 is the above-mentioned.
And the like, and the total water amount is adjusted by the water amount adjusting valve 28. The water supply circuit 23 is provided with a water amount sensor 31 and a water temperature sensor 32 so that the temperature of the hot water is 8
The combustion amount of the combustion unit 3 is adjusted so that the temperature becomes about 0 ° C.

【００３７】給湯回路２９には、後述するバイパス水路
３７に繋がる注湯バイパス回路４７が設けられている。
注湯バイパス回路４７は、浴槽（図示せず）の落とし込
みを行う回路であり、中途に注湯電磁弁４８と、注湯水
量センサ５０と、逆止弁５１，５２が設けられている。
注湯水量センサ５０は、注湯バイパス回路４７を流れる
水量を検知するものであり、この検知信号に基づき注湯
電磁弁４８を開閉することにより、浴槽内に貯留する湯
水の量が調整される。また、逆止弁５１，５２は、浴槽
側からの湯水の逆流を防止するものである。The hot water supply circuit 29 is provided with a pouring bypass circuit 47 connected to a bypass water passage 37 described later.
The pouring metal bypass circuit 47 is a circuit for dropping a bath (not shown), and is provided with a pouring electromagnetic valve 48, a pouring water amount sensor 50, and check valves 51 and 52 in the middle thereof.
The pouring water amount sensor 50 detects the amount of water flowing through the pouring bypass circuit 47, and by opening and closing the pouring electromagnetic valve 48 based on this detection signal, the amount of hot water stored in the bathtub is adjusted. . Further, the check valves 51 and 52 prevent the backflow of hot water from the bathtub side.

【００３８】第２流水回路２１は、いわゆる追い焚き回
路であり、熱交換器１８側から浴槽（図示せず）へ湯水
を送る往側回路３５と、浴槽から熱交換器１８側に湯水
を戻す戻り側回路３６とを有し、往側回路３５と戻り側
回路３６との間には、両者をバイパスするバイパス水路
３７が設けられている。また、往側回路３５には、当該
往側回路３５内に滞留する湯水を必要に応じて排出する
水抜回路３８が設けられている。The second running water circuit 21 is a so-called reheating circuit, and includes a forward circuit 35 for sending hot water from the heat exchanger 18 side to a bath (not shown) and hot water for returning from the bath to the heat exchanger 18 side. A return side circuit 36 is provided, and a bypass water channel 37 that bypasses the return side circuit 35 and the return side circuit 36 is provided between them. Further, the forward side circuit 35 is provided with a drainage circuit 38 for discharging hot and cold water accumulated in the forward side circuit 35 as needed.

【００３９】戻り側回路３６には、水位センサ４０と、
循環ポンプ４１、水流スイッチ４３および湯温センサ４
５が設けられている。また、戻り側回路３６とバイパス
水路３７との分岐部には三方弁４６が設けられ、必要に
応じて三方弁４６が開閉される。即ち、浴槽への落とし
込みを行う場合には、三方弁４６はバイパス水路３７と
循環ポンプ４１とを連通し、熱交換器１８を閉止する。
また、浴槽内の湯水を追い焚きする場合は、三方弁４６
は熱交換器１８と循環ポンプ４１とを連通し、バイパス
水路３７を閉止する。In the return side circuit 36, a water level sensor 40,
Circulation pump 41, water flow switch 43, and hot water temperature sensor 4
5 are provided. Further, a three-way valve 46 is provided at a branch portion between the return side circuit 36 and the bypass water passage 37, and the three-way valve 46 is opened / closed as needed. That is, when the water is dropped into the bathtub, the three-way valve 46 connects the bypass water passage 37 and the circulation pump 41 to close the heat exchanger 18.
When reheating the hot water in the bathtub, the three-way valve 46
Connects the heat exchanger 18 and the circulation pump 41 and closes the bypass water passage 37.

【００４０】循環回路２２は、貯留部６から暖房端末５
５に熱媒体を流出する循環往路５６と、暖房端末５５か
ら貯留部６に熱媒体を戻す循環復路５７とにより構成さ
れた密閉回路である。循環往路５６の中途には、循環回
路２２内を流れる熱媒体を圧送するための循環ポンプ５
８が設けられている。循環ポンプ５８は吸い込み側が貯
留部６側に接続され、循環ポンプ５８の吐出側は暖房端
末５５側に接続されている。循環回路２２には、循環往
路５６の中途で循環ポンプ５８より下流側と、貯留部６
とをバイパスするポンプ保護バイパス回路６０が設けら
れている。The circulation circuit 22 extends from the storage section 6 to the heating terminal 5
5 is a closed circuit constituted by a circulation outward path 56 for flowing the heat medium to 5 and a circulation return path 57 for returning the heat medium from the heating terminal 55 to the storage section 6. In the middle of the circulation outward path 56, the circulation pump 5 for pressure-feeding the heat medium flowing in the circulation circuit 22.
8 are provided. The suction side of the circulation pump 58 is connected to the storage section 6 side, and the discharge side of the circulation pump 58 is connected to the heating terminal 55 side. The circulation circuit 22 includes a portion in the middle of the circulation outward path 56 on the downstream side of the circulation pump 58 and a storage portion 6.
A pump protection bypass circuit 60 is provided for bypassing and.

【００４１】貯留部６には、内部に貯留する熱媒体の温
度を測定するためのサーミスタを用いた温度センサ６２
が設けられている。温度センサ６２は安定した検知精度
を得るために貯留部６の上方側に取り付けられている。
この温度センサ６２の検知温度に基づいて燃焼部３が駆
動され、貯留部６内の熱媒体は沸騰しない程度の８０℃
以上の温度に維持されている。The storage section 6 has a temperature sensor 62 using a thermistor for measuring the temperature of the heat medium stored therein.
Is provided. The temperature sensor 62 is attached to the upper side of the reservoir 6 in order to obtain stable detection accuracy.
The combustion unit 3 is driven based on the temperature detected by the temperature sensor 62, and the heat medium in the storage unit 6 is not heated to 80 ° C.
It is maintained at the above temperature.

【００４２】本実施形態の燃焼装置は上記した構成であ
り、燃焼制御は、図３の様に、ＣＰＵを用いた制御回路
部８０によって統括して行われる。制御回路部８０は、
Ａ／Ｄ変換回路やＤ／Ａ変換回路、Ｉ／Ｏポートなどを
備え、センサの検知信号やスイッチの切換信号を参照し
つつ、予めＲＯＭ８６に格納されたプログラムやデータ
あるいはＲＡＭ８５に記憶したデータを参照して燃焼に
必要な制御信号を生成するデジタル制御を行う。The combustion apparatus of the present embodiment has the above-mentioned configuration, and combustion control is carried out by the control circuit section 80 using a CPU as shown in FIG. The control circuit unit 80 is
It is equipped with an A / D conversion circuit, a D / A conversion circuit, an I / O port, etc., and while referring to the detection signal of the sensor and the switching signal of the switch, the programs and data stored in advance in the ROM 86 or the data stored in the RAM 85 are stored. The digital control for generating the control signal necessary for combustion is performed with reference.

【００４３】逆風検知手段７０の風圧スイッチ７２は制
御回路部８０に接続されている。風圧スイッチ７２は逆
風停止時には常閉接点７２ａを閉成している。そして、
検圧管７１に逆風が加わり接続チューブ７３を介して風
圧スイッチ７２の開口７２ｂに空気圧力が印加される
と、常閉接点７２ａが開成して制御回路部８０に逆風の
検知信号を送出する。本実施形態では、逆風検知手段７
０の検知信号を制御回路部８０で受けて信号処理を行う
ことにより、逆風の判別を行う構成としている。The wind pressure switch 72 of the backwind detecting means 70 is connected to the control circuit section 80. The wind pressure switch 72 closes the normally closed contact 72a when the back wind is stopped. And
When the back wind is applied to the pressure detection pipe 71 and the air pressure is applied to the opening 72b of the wind pressure switch 72 through the connection tube 73, the normally closed contact 72a is opened to send the back wind detection signal to the control circuit unit 80. In the present embodiment, the headwind detecting means 7
The control circuit unit 80 receives a detection signal of 0 and performs signal processing to determine the headwind.

【００４４】また、前記した貯留部６の保温制御は次の
様にして行われる。則ち、温度センサ６２の検知温度が
７５℃まで低下すると、制御回路部８０は燃焼制御部８
１に制御信号を送出して燃料噴射ノズル１５から所定燃
焼量（本実施形態では燃焼号数１０号）の燃料を噴射さ
せると共に、送風機制御部８２に制御信号を送出して送
風機１６を燃焼量に対応した空気供給量で駆動して燃焼
制御を開始する。そして、温度センサ６２の検知温度が
８５℃まで上昇すると、制御回路部８０は燃焼制御部８
１および送風機制御部８２の駆動を停止して燃焼制御を
停止させる。この動作を繰り返すことにより、貯留部６
内の熱媒体は８０℃以上に自動的に保温される。The heat retention control of the storage section 6 is performed as follows. That is, when the temperature detected by the temperature sensor 62 decreases to 75 ° C., the control circuit unit 80 causes the combustion control unit 8
1 to inject a predetermined amount of fuel (combustion number 10 in the present embodiment) of fuel from the fuel injection nozzle 15 and to send a control signal to the blower controller 82 to burn the blower 16 The combustion control is started by driving with an air supply amount corresponding to. Then, when the temperature detected by the temperature sensor 62 rises to 85 ° C., the control circuit unit 80 causes the combustion control unit 8 to
1 and the blower control unit 82 are stopped to stop the combustion control. By repeating this operation, the storage unit 6
The heat medium inside is automatically kept warm above 80 ° C.

【００４５】また、カランが開かれて水量センサ３１が
水流を検知すると、制御回路部８０は燃焼制御部８１お
よび送風機制御部８２に制御信号を送出して温度設定部
（不図示）で設定された温度に応じた燃焼量で燃焼を行
いつつ給湯が行われる。また、暖房運転スイッチ８３を
操作すると、制御回路部８０は循環制御部８４に制御信
号を送出して循環ポンプ５８を駆動し、暖房端末５５に
熱媒体を循環させて暖房運転が開始される。この場合、
貯留部６の熱媒体は前記制御によって略８０℃に自動保
温される制御が行われる。When the water flow sensor 31 detects the water flow by opening the currant, the control circuit section 80 sends a control signal to the combustion control section 81 and the blower control section 82 to set the temperature in a temperature setting section (not shown). Hot water is supplied while performing combustion with a combustion amount according to the temperature. When the heating operation switch 83 is operated, the control circuit section 80 sends a control signal to the circulation control section 84 to drive the circulation pump 58, circulate the heat medium to the heating terminal 55, and start the heating operation. in this case,
The heat medium of the storage section 6 is controlled to be automatically kept at about 80 ° C. by the above control.

【００４６】次に、第１実施形態の燃焼装置１に適用す
る逆風の判別および逆風対応制御の動作を図３〜図５を
参照して詳細に説明する。尚、以下の説明では、各部の
制御は制御回路部８０で統括して行うことを前提として
述べる。Next, the operation of the headwind discrimination and headwind response control applied to the combustion apparatus 1 of the first embodiment will be described in detail with reference to FIGS. In the following description, it is assumed that the control circuit unit 80 integrally controls each unit.

【００４７】運転スイッチ（不図示）がオン操作され
るまでは初期設定を行いつつ待機する（図４ステップ１
００〜１０２参照）。初期設定では、貯留部６の保温制
御のための設定温度を７５℃オン／８５℃オフに設定す
ると共に、判別フラグおよびタイマーをリセットする。
タイマーは逆風判別時間を計時する２秒タイマーと正常
判別時間を計時する１０秒タイマーを有する。また、判
別フラグは、２秒タイマーによって計時される逆風判別
時間だけ継続して逆風検知手段７０が逆風状態を検知し
たときに逆風の発生と判別してオンされるフラグであ
る。Until the operation switch (not shown) is turned on, the system waits while performing initial settings (step 1 in FIG. 4).
00-102). In the initial setting, the set temperature for the heat retention control of the storage unit 6 is set to 75 ° C. ON / 85 ° C. OFF, and the determination flag and the timer are reset.
The timer has a 2-second timer that measures the headwind discrimination time and a 10-second timer that measures the normal discrimination time. The determination flag is a flag that is turned on by determining that a backwind has occurred when the backwind detection means 70 detects the backwind state continuously for the backwind determination time counted by the 2-second timer.

【００４８】運転が開始され、逆風検知手段７０が逆
風を検知しないときは、貯留部６の自動保温の燃焼量を
燃焼号数１０号に設定すると共に、設定温度を初期設定
と同一の７５℃オン／８５℃オフに設定して自動保温を
継続する（図４ステップ１０２，１０３，１１４，１２
０，１２２，１２３参照）。When the operation is started and the back wind detecting means 70 does not detect the back wind, the combustion amount of the automatic heat retention of the storage section 6 is set to the combustion number 10 and the set temperature is 75 ° C. which is the same as the initial setting. Set ON / 85 ° C OFF to continue automatic heat retention (steps 102, 103, 114, 12 in FIG. 4).
0, 122, 123).

【００４９】逆風検知手段７０が逆風を検知すると、
２秒タイマーの計時を開始し、２秒が経過するまでに逆
風が停止すると２秒タイマーをリセットして貯留部６の
自動保温を継続する（図４ステップ１０２〜１０８，１
１４，１２０，１２１，１２２，１２３、図５（ａ）参
照）。When the headwind detecting means 70 detects headwind,
The timer for 2 seconds is started, and when the back wind stops before 2 seconds elapse, the timer for 2 seconds is reset to continue the automatic heat retention of the storage section 6 (steps 102 to 108, 1 in FIG.
14, 120, 121, 122, 123, see FIG. 5 (a)).

【００５０】一方、２秒経過しても逆風検知状態が継
続すると逆風の発生を判別して判別フラグをオンにす
る。そして、２秒タイマーをリセットし、逆風対応制御
に移行する。則ち貯留部６の自動保温の燃焼量を燃焼号
数２５．５号（本実施形態では燃焼装置１の最大燃焼
量）に増加設定する。なお本実施形態では、燃焼号数に
対応した風量で送風が行われる様に制御されており、燃
焼号数が増大すると燃焼時の風量も増加する。また上記
した燃焼号数の増加と共に、設定温度を６５℃オン／８
５℃オフに切換設定する。則ち設定温度の下限を下方向
にシフトさせて全体的に温度制御幅を拡大している。ま
た見方を代えれば設定温度の中心を変更したこととな
る。そしてこの状態で逆風状態における自動保温を継続
する（図４ステップ１０２〜１１３、図５（ａ），
（ｂ），（ｄ）参照）。但し、水量センサ３１の検知信
号を受ける給湯中は、逆風状態であっても、貯留部６の
自動保温の燃焼量を燃焼号数２５．５号に設定したま
ま、設定温度を７５℃オン／８５℃オフに戻す（図４ス
テップ１０２〜１１２，１２３、図５（ａ）〜（ｄ）参
照）。On the other hand, if the backwind detection state continues even after 2 seconds have passed, it is determined that backwind has occurred and the determination flag is turned on. Then, the 2-second timer is reset, and the control shifts to the headwind response control. That is, the combustion amount for automatic heat retention in the storage unit 6 is increased to the combustion number of 25.5 (the maximum combustion amount of the combustion device 1 in this embodiment). It should be noted that in the present embodiment, the air is controlled to be blown at an air volume corresponding to the combustion number, and when the combustion number increases, the air volume at the time of combustion also increases. Also, with the increase in the number of combustion mentioned above, the set temperature is turned on at 65 ° C / 8.
Switch off 5 ℃ and set. That is, the lower limit of the set temperature is shifted downward to expand the temperature control range as a whole. In other words, the center of the set temperature is changed. Then, in this state, the automatic heat retention in the headwind state is continued (steps 102 to 113 in FIG. 4, FIG. 5A,
(See (b) and (d)). However, during hot water supply receiving the detection signal of the water amount sensor 31, even if the wind is in a back wind condition, the set temperature is set to 75 ° C./on while keeping the combustion amount of the automatic heat retention of the storage unit 6 set to the combustion number of 25.5. It is returned to 85 ° C. OFF (see steps 102 to 112 and 123 in FIG. 4 and FIGS. 5A to 5D).

【００５１】判別フラグがオンの状態で逆風が検知さ
れなくなると、１０秒タイマーの計時を開始し、１０秒
が経過するまでに再び逆風が検知されると、上記の制
御工程に戻る。この場合は、逆風の検知は行うが、判別
フラグが既にオンされているので、逆風対応制御は継続
したままである（図４ステップ１０３，１１４〜１１
７，１０２、図５（ａ）参照）。When the backwind is not detected while the discrimination flag is on, the 10-second timer starts counting, and when the backwind is detected again within 10 seconds, the process returns to the above control step. In this case, although the backwind is detected, the determination flag has already been turned on, so the backwind support control is still continued (steps 103, 114 to 11 in FIG. 4).
7, 102, see FIG. 5 (a).

【００５２】一方、１０秒が経過するまで逆風が検知
されない状態が継続すると、逆風の停止を判別して判別
フラグをリセットする。そして、１０秒タイマーをリセ
ットし、貯留部６の自動保温の燃焼量の設定を燃焼号数
１０号に戻すと共に、設定温度を７５℃オン／８５℃オ
フに切換設定して通常燃焼制御における自動保温を継続
する（図４ステップ１０３，１１４〜１２３、図５
（ａ）〜（ｄ）参照）。On the other hand, if the state in which the back wind is not detected continues until 10 seconds elapse, the stop of the back wind is discriminated and the discrimination flag is reset. Then, the timer for 10 seconds is reset, the setting of the combustion amount of the automatic heat retention of the storage unit 6 is returned to the combustion number 10, and the set temperature is set to 75 ° C on / 85 ° C off to set the automatic combustion in the normal combustion control. Keeping warm (steps 103, 114-123 in FIG. 4, FIG. 5)
(See (a) to (d)).

【００５３】この様に、本実施形態によれば、燃焼に与
える影響の少ない短時間の逆風については逆風の発生と
して判別しないので、このような逆風が頻発しても、逆
風対応制御と通常燃焼制御とが頻繁に切り換わることが
ない。また、逆風が検知されない状態が定常判別時間だ
け継続しなければ逆風の停止と判別しないので、その間
に頻繁に逆風が生じても逆風対応制御を継続したままで
ある。これにより、逆風の影響を最小限に抑えつつ安定
した燃焼制御を行うことが可能となる。尚、本実施形態
では、逆風判別時間を２秒、定常判別時間を１０秒に設
定したが、これらの時間は燃焼装置１の燃焼能力や設置
場所に応じて適宜に設定可能である。As described above, according to the present embodiment, a short-time backwind that has little influence on combustion is not discriminated as the backwind. Therefore, even if such backwind occurs frequently, the backwind handling control and the normal combustion are performed. Control does not switch frequently. Further, if the state in which no backwind is detected does not continue for the steady determination time, it is not determined that the backwind is stopped. Therefore, even if a backwind frequently occurs, the backwind handling control is still continued. This makes it possible to perform stable combustion control while minimizing the effect of backwind. In the present embodiment, the backwind discrimination time is set to 2 seconds and the steady discrimination time is set to 10 seconds, but these times can be appropriately set according to the combustion capacity of the combustion device 1 and the installation location.

【００５４】また上記した実施形態では、逆風対応制御
の一つとして、設定温度を７５℃オン／８５℃オフから
６５℃オン／８５℃オフに切換設定した。則ち本実施形
態では、設定温度の下限を下方向にシフトさせて全体的
に温度制御幅を拡大した。しかしこれに代わる方策とし
て、例えば７５℃オン／９０℃オフの様に上限側を上方
にシフトさせてもよい。また６５℃オン／９０℃オフの
様に上限側を上方にシフトさせ、下限側を下方にシフト
させてもよい。則ち本発明は、温度制御のヒステリシス
を増大させたものである。Further, in the above-described embodiment, as one of the controls for dealing with the backwind, the set temperature is switched from 75 ° C. on / 85 ° C. off to 65 ° C. on / 85 ° C. off. That is, in this embodiment, the lower limit of the set temperature is shifted downward to expand the temperature control range as a whole. However, as an alternative measure, the upper limit side may be shifted upward, for example, 75 ° C on / 90 ° C off. Further, the upper limit side may be shifted upward and the lower limit side may be shifted downward like 65 ° C. on / 90 ° C. off. That is, the present invention increases the temperature control hysteresis.

【００５５】また上記した実施例で採用した逆風検知手
段に代わって風の有無を検知する風検知手段を使用して
もよい。則ち風検知手段によって一定値以上の強風を検
知した場合は、逆風が発生するものと擬制して逆風対応
制御に移行する。風検知手段は例えば燃焼装置の本体に
設けることもできる。Further, wind detecting means for detecting the presence or absence of wind may be used in place of the back wind detecting means employed in the above-mentioned embodiment. In other words, when the wind detecting means detects a strong wind of a certain value or more, it assumes that a back wind will occur and shifts to the back wind handling control. The wind detecting means may be provided in the main body of the combustion device, for example.

【００５６】（第２実施形態）次に、第２実施形態の逆
風の判別および逆風対応制御の動作を図３および図６，
図７を参照して詳細に説明する。尚、図６は第２実施形
態の制御動作を示すフローチャート、図７はその動作を
示すタイミングチャートである。ここで、第２実施形態
の燃焼装置１の基本構成は、前記図１〜図３に示した第
１実施形態の燃焼装置１と同一である。本実施形態で
は、燃焼装置１を支障なく燃焼させることができる逆風
の最大許容風速を予め把握し、逆風検知手段７０で検知
する逆風の風速をこの最大許容風速値に設定している。
そして、最大許容風速を超える逆風が生じた場合に燃焼
を禁止させる逆風対応制御を行うものである。以下に、
動作の詳細を説明する。(Second Embodiment) Next, the operation of the headwind discrimination and headwind response control of the second embodiment will be described with reference to FIGS.
This will be described in detail with reference to FIG. 7. 6 is a flowchart showing the control operation of the second embodiment, and FIG. 7 is a timing chart showing the operation. Here, the basic configuration of the combustion apparatus 1 of the second embodiment is the same as that of the combustion apparatus 1 of the first embodiment shown in FIGS. 1 to 3 above. In the present embodiment, the maximum allowable wind speed of backwind that can burn the combustion device 1 without any trouble is grasped in advance, and the wind speed of the backwind detected by the backwind detection means 70 is set to this maximum allowable wind speed value.
Then, when a backwind exceeding the maximum allowable wind speed is generated, a backwind handling control for prohibiting combustion is performed. less than,
The details of the operation will be described.

【００５７】運転スイッチ（不図示）がオン操作され
るまでは初期設定を行いつつ待機する（図６ステップ１
３０〜１３２参照）。初期設定によって、逆風の検知回
数、タイマーおよび判別フラグをリセットすると共に、
カウントフラグをオンにセットする。ここで、タイマー
は判別時間を計時する１分タイマーであり、カウントフ
ラグは検知回数のカウントの可否を区別するフラグであ
る。また、判別フラグは、判別時間（１分間）内に逆風
検知手段７０によって所定回数（３回）の逆風状態が検
知されたときにオンされるフラグである。Until the operation switch (not shown) is turned on, the system waits while making initial settings (step 1 in FIG. 6).
30-132). By initial setting, reset the number of times of backwind detection, timer and discrimination flag,
Set the count flag to on. Here, the timer is a 1-minute timer that measures the determination time, and the count flag is a flag that distinguishes whether or not to count the number of times of detection. The determination flag is a flag that is turned on when the backwind detection unit 70 detects a backwind state a predetermined number of times (three times) within the determination time (1 minute).

【００５８】運転が開始され、逆風検知手段７０が逆
風を検知しないときは、燃焼要求に対して通常の燃焼制
御処理を行う（図６ステップ１３２，１３３，１４５，
１５２，１５０，１５１参照）。When the operation is started and the backwind detecting means 70 does not detect the backwind, the normal combustion control process is performed for the combustion request (steps 132, 133, 145 in FIG. 6).
152, 150, 151).

【００５９】逆風検知手段７０が逆風状態を検知する
と、１分タイマーの計時を開始し検知回数を１増加させ
ると共にカウントフラグをオフに設定し、燃焼を禁止す
る逆風対応制御を行う（図６ステップ１３２，１３３〜
１３９，１４２参照）。そして１分が経過するまで逆風
状態が継続すると、燃焼禁止の状態を維持する（図６ス
テップ１３２，１３３〜１３６，１４３、図７（ａ）参
照）。When the backwind detecting means 70 detects a backwind condition, the 1-minute timer starts counting, the number of detections is increased by 1, the count flag is set to OFF, and the backwind handling control for prohibiting combustion is performed (step in FIG. 6). 132, 133-
139, 142). Then, if the backwind state continues until 1 minute has elapsed, the combustion prohibited state is maintained (steps 132, 133 to 136, 143 in FIG. 6, see FIG. 7A).

【００６０】１分が経過しても逆風状態が継続してい
るときは、検知回数をリセットし、燃焼禁止状態を継続
しつつ再び１分タイマーの計時を開始する（図６ステッ
プ１３２〜１３６，１４３，１４４，１３９，１４２参
照）。この制御工程は、逆風の検知状態が継続する間
は繰り返されて燃焼禁止は継続したままとなる。そし
て、逆風が検知されなくなると、燃焼禁止の逆風対応制
御を解除して定常の燃焼制御を再開する（図６ステップ
１３２，１３３，１４５，１５２〜１５４，１５０，１
５１、図７（ａ）参照）。If the backwind state continues even after 1 minute has elapsed, the number of detections is reset, and the 1-minute timer starts counting again while continuing the combustion prohibited state (steps 132 to 136 in FIG. 6). 143, 144, 139, 142). This control process is repeated while the head wind detection state continues, and combustion inhibition remains. Then, when the backwind is no longer detected, the control of the backwind corresponding to the combustion inhibition is canceled and the steady combustion control is restarted (steps 132, 133, 145, 152 to 154, 150, 1 in FIG. 6).
51, see FIG. 7 (a).

【００６１】一方、制御工程において、一分が経過
するまでに逆風が検知されなくなると、制御回路部８０
は、タイマーの計時を継続しつつ、燃焼禁止を解除し、
カウントフラグをオンに設定する（図６ステップ１３２
〜１３９，１４２参照）。この後、再び逆風が検知され
ると、前記制御工程に戻って検知回数を１増加させる
と共に、燃焼禁止の逆風対応制御を再開する。この制御
工程および制御工程は１分が経過するまで繰り返さ
れる。On the other hand, in the control process, if the backwind is no longer detected by the lapse of one minute, the control circuit section 80
Cancels the combustion prohibition while continuing to count the timer,
The count flag is set to ON (step 132 in FIG. 6).
~ 139, 142). After that, when the backwind is detected again, the process returns to the control step, the number of detections is increased by 1, and the combustion-inhibited backwind handling control is restarted. This control step and the control step are repeated until 1 minute has elapsed.

【００６２】制御工程および制御工程を繰り返し
て１分が経過したときに、検知回数が３回に達しておら
ず、逆風状態が検知されていなければ、検知回数をリセ
ットし、燃焼禁止の逆風対応制御を解除して定常の燃焼
制御を再開する（図６ステップ１３２，１３３，１４
５，１５２〜１５４，１５０，１５１、図７（ｂ）参
照）。また、１分が経過したときに、検知回数が３回に
達しておらず、逆風検知状態であれば、検知回数をリセ
ットする。そして、逆風が検知されなくなると検知回数
をリセットし、燃焼禁止の逆風対応制御を解除して燃焼
を許容する通常燃焼制御に移行する（図６ステップ１３
２，１３３〜１３６，１４３，１４４，１３９，１４
２，１４５，１５２〜１５４，１５０，１５１、図７
（ｂ）参照）。When 1 minute has elapsed after repeating the control process and the control process, if the number of times of detection has not reached 3 times and the backwind condition has not been detected, the number of times of detection is reset to cope with the backwind in which combustion is prohibited. The control is released and the steady combustion control is restarted (steps 132, 133, 14 in FIG. 6).
5,152-154,150,151, see FIG. 7B). In addition, when the number of times of detection has not reached 3 times when one minute has passed and the headwind is detected, the number of times of detection is reset. Then, when the backwind is no longer detected, the number of times of detection is reset, the control of the backwind corresponding to the combustion prohibition is released, and the process shifts to the normal combustion control that allows combustion (step 13 in FIG. 6).
2,133-136,143,144,139,14
2,145,152-154,150,151, FIG.
(See (b)).

【００６３】一方、制御工程および制御工程を繰
り返して１分が経過するまでに逆風の検知回数が３回に
達すると、判別フラグをオンにすると共にタイマーをリ
セットし、燃焼禁止の逆風対応制御を継続する（図６ス
テップ１３２〜１４２、制御工程参照）。そして、続
いて逆風が検知されなくなると、１分タイマーの計時を
開始すると共にカウントフラグをオンにし、燃焼禁止の
逆風対応制御を継続する（図６ステップ１３２，１３
３，１４５〜１４８、１５５，１３４〜１４４、図７
（ｃ）参照）。On the other hand, when the control step and the control step are repeated and the number of times of detection of backwind reaches three times within one minute, the discrimination flag is turned on and the timer is reset to control the backwind corresponding to combustion inhibition. Continue (see steps 132 to 142 in FIG. 6, control step). Then, when the backwind is no longer detected, the one-minute timer starts counting, the count flag is turned on, and the combustion-inhibited backwind handling control is continued (steps 132 and 13 in FIG. 6).
3,145-148, 155,134-144, FIG.
(See (c)).

【００６４】１分が経過すると、制御回路部８０は、
検知回数およびタイマーをリセットすると共に、判別フ
ラグをオフ、カウントフラグをオンに設定し、燃焼禁止
の逆風対応制御を解除して通常燃焼制御に復帰する（図
６ステップ１３２，１３３，１４５〜１５１、図７
（ｃ）参照）。但し、１分が経過した時点で逆風検知状
態であれば、再び、前記制御工程に戻って燃焼禁止の
逆風対応制御が行われる。When one minute has passed, the control circuit section 80
While resetting the number of detections and the timer, setting the determination flag to OFF and the count flag to ON, cancels the control of the backflow for which combustion is prohibited and returns to the normal combustion control (steps 132, 133, 145 to 151 in FIG. 6). Figure 7
(See (c)). However, if the backwind detection state is reached at the time when one minute has passed, the process returns to the control process again, and the backwind support control for prohibiting combustion is performed.

【００６５】この様に、第２実施形態の逆風対応制御に
よれば、逆風状態を検知したときは必ず燃焼停止を行
い、その上、逆風の断続が１分間に３回生じると、逆風
の断続が頻繁に生じるものと判別して、燃焼禁止の逆風
対応制御を１分間延長する。これにより、燃焼装置１の
安定燃焼を確保しつつ燃焼に支障を及ぼす逆風の発生頻
度に応じて燃焼禁止状態を的確に継続させることがで
き、安定した燃焼制御を行うことが可能となる。As described above, according to the backwind control according to the second embodiment, when the backwind state is detected, the combustion is always stopped, and when the backwind is intermittently generated three times in one minute, the backwind is intermittent. Is determined to occur frequently, and the combustion-controlled headwind response control is extended for 1 minute. As a result, stable combustion of the combustion device 1 can be ensured, and the combustion prohibited state can be accurately continued in accordance with the frequency of generation of backwind that interferes with combustion, and stable combustion control can be performed.

【００６６】尚、本実施形態では、判別時間（１分間）
内に逆風の発生を所定回数（３回）検知した場合に逆風
の発生と判別して、逆風対応制御を待機時間（１分間）
継続させる構成としたが、これらの判別時間、待機時間
および検知回数は、燃焼装置１の燃焼能力や設置場所に
応じて適宜に設定可能である。また、本実施形態の燃焼
装置１は貯湯式の燃焼装置として述べたが、走水式の燃
焼装置などにも適用可能である。In this embodiment, the discrimination time (1 minute)
When the occurrence of backwind is detected a predetermined number of times (3 times), it is determined that backwind has occurred, and the backwind response control is performed for a waiting time (1 minute).
Although it is configured to continue, the determination time, the waiting time, and the number of times of detection can be appropriately set according to the combustion capacity of the combustion device 1 and the installation location. Further, although the combustion device 1 of the present embodiment has been described as a hot water storage type combustion device, it is also applicable to a running water type combustion device and the like.

【００６７】以上、本発明の実施形態を説明したが、上
記第２実施形態の燃焼装置に適用した逆風の発生を判別
する制御および逆風対応制御を継続させる制御を前記第
１実施形態の燃焼装置に適用することも可能である。ま
た、逆に、前記第１実施形態の燃焼装置に適用した逆風
の発生および停止を判別する制御を前記第２実施形態の
燃焼装置に適用して逆風対応制御を行うことも可能であ
る。Although the embodiment of the present invention has been described above, the control for discriminating the occurrence of the backwind and the control for continuing the backwind support control applied to the combustion apparatus of the second embodiment are controlled by the combustion apparatus of the first embodiment. It is also possible to apply to. Conversely, it is also possible to apply the control applied to the combustion apparatus according to the first embodiment to determine the occurrence and stop of the backwind to the combustion apparatus according to the second embodiment to perform the headwind response control.

【００６８】また、逆風の発生を判別する制御は適宜に
行い、所定の判別時間内に逆風の発生を所定回数検知し
た場合には、所定の定常判別時間だけ継続して逆風の停
止を検知した場合に限って逆風の停止と判別する制御を
行うことも可能である。Further, the control for discriminating the occurrence of the back wind is appropriately performed, and when the generation of the back wind is detected a predetermined number of times within a predetermined discrimination time, the stop of the back wind is continuously detected for a predetermined steady discrimination time. Only in such a case, it is possible to perform the control for determining that the back wind is stopped.

【００６９】また、例えば、逆風の発生の判別は前記第
１実施形態と同様の制御で行い、所定の判別時間内に逆
風の発生を所定回数検知した場合には、前記第２実施形
態と同様に逆風状態が検知されなくなった時点から所定
の待機時間は逆風対応制御を継続する制御を行うことも
可能である。Further, for example, the determination of the back wind is performed by the same control as that of the first embodiment, and when the back wind is detected a predetermined number of times within a predetermined determination time, the same as in the second embodiment. In addition, it is possible to perform control to continue the headwind response control for a predetermined waiting time from the time when the headwind condition is no longer detected.

【００７０】[0070]

【発明の効果】本発明によれば、逆風が生じた場合でも
燃焼量を増加させた逆風対応制御を行うことにより安定
した燃焼を行う貯湯式の燃焼装置を提供することができ
る。また本発明によれば、貯留部の保温のために頻繁に
燃焼状態が切り換わることが防止され、耐久性を向上し
た燃焼装置を提供できる。請求項５に記載の本発明によ
れば、燃焼状態に影響を及ぼすことの少ない短時間だけ
生じる逆風を判別しないことにより、逆風対応制御と通
常燃焼制御が頻繁に切り換わることを防止でき、安定し
た燃焼を行う燃焼装置を提供できる。請求項６〜９に記
載の本発明によれば、逆風の発生状況に応じて逆風対応
制御を継続させることにより、逆風対応制御と通常燃焼
制御が頻繁に切り換わることを防止でき、安定した燃焼
を行う燃焼装置を提供できる。According to the present invention, it is possible to provide a hot-water storage type combustion apparatus that performs stable combustion by performing control against the backwind that increases the amount of combustion even when backwind occurs. Further, according to the present invention, it is possible to provide a combustion device in which the combustion state is prevented from being frequently switched to keep the temperature of the storage portion and the durability is improved. According to the fifth aspect of the present invention, by not discriminating the backwind generated only for a short time, which does not affect the combustion state, it is possible to prevent frequent switching between the backwind handling control and the normal combustion control, and it is stable. It is possible to provide a combustion device that performs the above combustion. According to the present invention as set forth in claims 6 to 9, by continuing the backwind handling control according to the occurrence situation of the backwind, frequent switching between the backwind handling control and the normal combustion control can be prevented, and stable combustion can be achieved. It is possible to provide a combustion device for performing.

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

【図１】（ａ）は本発明の実施形態に係る燃焼装置の正
面図、（ｂ）はその側面図である。1A is a front view of a combustion apparatus according to an embodiment of the present invention, and FIG. 1B is a side view thereof.

【図２】図１に示す燃焼装置の流水回路図である。2 is a running water circuit diagram of the combustion device shown in FIG. 1. FIG.

【図３】図１に示す燃焼装置の制御系の要部構成を示す
ブロック図である。FIG. 3 is a block diagram showing a main configuration of a control system of the combustion device shown in FIG.

【図４】図１に示す燃焼装置の逆風対応制御の動作を示
すフローチャートである。FIG. 4 is a flowchart showing an operation of headwind response control of the combustion apparatus shown in FIG.

【図５】図４に示す制御動作のタイミングチャートであ
る。5 is a timing chart of the control operation shown in FIG.

【図６】本発明の別の実施形態に係る燃焼装置の逆風対
応制御の動作を示すフローチャートである。FIG. 6 is a flowchart showing the operation of headwind response control of the combustion apparatus according to another embodiment of the present invention.

【図７】（ａ）〜（ｃ）は図６に示す制御動作を逆風の
検知状況に応じて示したタイミングチャートである。7 (a) to 7 (c) are timing charts showing the control operation shown in FIG. 6 according to a headwind detection situation.

【符号の説明】[Explanation of symbols]

１ 燃焼装置 ３ 燃焼部 ６ 貯留部 １６ 送風機 ６２ 温度センサ ６３ 排気流路（排気口） ７０ 逆風検知手段 1 Combustion device 3 Combustion section 6 storage 16 blower 62 Temperature sensor 63 Exhaust flow path (exhaust port) 70 Headwind detection means

───────────────────────────────────────────────────── フロントページの続き (72)発明者 長尾 英也 兵庫県神戸市中央区江戸町93番地 株式会 社ノーリツ内 (72)発明者 城出 浩作 兵庫県神戸市中央区江戸町93番地 株式会 社ノーリツ内 (72)発明者 中西 康雄 兵庫県神戸市中央区江戸町93番地 株式会 社ノーリツ内 (72)発明者 木戸脇 彰 兵庫県神戸市中央区江戸町93番地 株式会 社ノーリツ内 (72)発明者 田中 良彦 兵庫県神戸市中央区江戸町93番地 株式会 社ノーリツ内 Ｆターム(参考） 3K003 AA08 AB03 AB06 AC02 AC09 BB07 BC02 CA04 CB03 CB05 RA01    ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideo Nagao             93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo Stock Association             Company Noritsu (72) Inventor Kosaku Joide             93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo Stock Association             Company Noritsu (72) Inventor Yasuo Nakanishi             93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo Stock Association             Company Noritsu (72) Inventor Akira Kidowaki             93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo Stock Association             Company Noritsu (72) Inventor Yoshihiko Tanaka             93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo Stock Association             Company Noritsu F-term (reference) 3K003 AA08 AB03 AB06 AC02 AC09                       BB07 BC02 CA04 CB03 CB05                       RA01

Claims (10)

【特許請求の範囲】[Claims] 【請求項１】 送風機から供給される空気を燃料に混合
して燃焼部で燃焼させ、燃焼によって発生した熱を利用
して貯留部に貯留した湯水または熱媒体を加熱し、前記
貯留部に貯留された湯水の温度を所定の温度に制御する
燃焼装置において、前記燃焼部で燃焼した燃焼ガスが排
出される排気流路に上流側へ向けて加わる逆風の有無を
検知する逆風検知手段を備え、該逆風検知手段の検知に
基づいて逆風の発生を判別したときは、燃焼要求に対し
て燃焼部における燃焼量を所定値まで増加させると共
に、送風機の供給空気量を増加させ、さらに貯留された
湯水の温度の制御値を変更する逆風対応制御が行われる
ことを特徴とする燃焼装置。1. The air supplied from a blower is mixed with fuel and burned in a combustion section, and the heat generated by the combustion is used to heat hot water or a heat medium stored in the storage section and stored in the storage section. In a combustion device that controls the temperature of the hot water to a predetermined temperature, a backwind detection unit that detects the presence or absence of backwind added toward the upstream side to an exhaust flow path from which the combustion gas burned in the combustion section is discharged, When it is determined that the back wind is generated based on the detection by the back wind detection means, the combustion amount in the combustion section is increased to a predetermined value in response to the combustion request, and the supply air amount of the blower is increased to further store the hot and cold water. Combustion device characterized in that the control against the counterwind is performed to change the control value of the temperature of the combustion device. 【請求項２】 送風機から供給される空気を燃料に混合
して燃焼部で燃焼させ、燃焼によって発生した熱を利用
して貯留部に貯留した湯水または熱媒体を加熱し、前記
貯留部に貯留された湯水の温度が所定の下限温度まで低
下すると燃焼を開始する一方、湯水の温度が所定の上限
温度まで上昇すると燃焼を停止して貯留部に貯留した湯
水または熱媒体の温度を制御する燃焼装置において、前
記燃焼部で燃焼した燃焼ガスが排出される排気流路に上
流側へ向けて加わる逆風の有無を検知する逆風検知手段
を備え、該逆風検知手段の検知に基づいて逆風の発生を
判別したときは、燃焼要求に対して燃焼部における燃焼
量を所定値まで増加させると共に、送風機の供給空気量
を増加させ、さらに前記燃焼が開始される下限温度より
も低い別の下限温度に切換設定する逆風対応制御が行わ
れることを特徴とする燃焼装置。2. The air supplied from the blower is mixed with fuel and burned in the combustion section, and the hot water or the heat medium stored in the storage section is heated by using the heat generated by the combustion and stored in the storage section. Combustion starts when the temperature of the generated hot water falls to a predetermined lower limit temperature, while combustion stops when the temperature of the hot water rises to a predetermined upper limit temperature to control the temperature of the hot water or heat medium stored in the storage section. The apparatus is provided with a backwind detecting means for detecting the presence or absence of backwind added toward the upstream side in the exhaust flow path from which the combustion gas burned in the combustion section is discharged, and the backwind is detected based on the detection by the backwind detecting means. When the determination is made, the combustion amount in the combustion section is increased to a predetermined value in response to the combustion request, the air supply amount of the blower is increased, and another lower limit temperature lower than the lower limit temperature at which the combustion is started. A combustion device characterized in that control is performed in response to headwinds by switching the setting to. 【請求項３】 送風機から供給される空気を燃料に混合
して燃焼部で燃焼させ、燃焼によって発生した熱を利用
して貯留部に貯留した湯水または熱媒体を加熱し、前記
貯留部に貯留された湯水の温度が所定の温度制御幅に納
まる様に制御する燃焼装置において、前記燃焼部で燃焼
した燃焼ガスが排出される排気流路に上流側へ向けて加
わる逆風の有無を検知する逆風検知手段を備え、該逆風
検知手段の検知に基づいて逆風の発生を判別したとき
は、燃焼要求に対して燃焼部における燃焼量を所定値ま
で増加させると共に、該燃焼量に応じて送風機の供給空
気量を増加させ、さらに前記温度制御幅を拡大する逆風
対応制御が行われることを特徴とする燃焼装置。3. The air supplied from the blower is mixed with fuel and burned in the combustion unit, and the heat generated by the combustion is used to heat the hot water or the heat medium stored in the storage unit to be stored in the storage unit. In a combustion device that controls the temperature of the generated hot water to fall within a predetermined temperature control range, a back wind that detects the presence of back wind that is applied toward the upstream side in the exhaust flow path from which the combustion gas burned in the combustion section is discharged. When the generation of backwind is determined based on the detection by the backwind detection means, the combustion amount in the combustion section is increased to a predetermined value in response to the combustion request, and the blower is supplied according to the combustion amount. A combustion apparatus, wherein a backwind-corresponding control for increasing the amount of air and further expanding the temperature control width is performed. 【請求項４】 送風機から供給される空気を燃料に混合
して燃焼部で燃焼させ、燃焼によって発生した熱を利用
して貯留部に貯留した湯水または熱媒体を加熱し、前記
貯留部に貯留された湯水の温度が所定の温度制御幅に納
まる様に制御する燃焼装置において、前記燃焼部で燃焼
した燃焼ガスが排出される排気流路に上流側へ向けて加
わる逆風の有無を検知する逆風検知手段を備え、該逆風
検知手段の検知に基づいて逆風の発生を判別したとき
は、燃焼要求に対して燃焼部における燃焼量を所定値ま
で増加させると共に、該燃焼量に応じて送風機の供給空
気量を増加させ、さらに前記温度制御幅の上限を上方に
シフトさせ、及び／又は下限を下方にシフトさせる逆風
対応制御が行われることを特徴とする燃焼装置。4. The air supplied from the blower is mixed with fuel and burned in the combustion section, and the hot water or the heat medium stored in the storage section is heated by using the heat generated by the combustion and stored in the storage section. In a combustion device that controls the temperature of the generated hot water to fall within a predetermined temperature control range, a back wind that detects the presence of back wind that is applied toward the upstream side in the exhaust flow path from which the combustion gas burned in the combustion section is discharged. When the back wind is detected based on the detection by the back wind detection means, the combustion amount in the combustion section is increased to a predetermined value in response to the combustion request, and the blower is supplied according to the combustion amount. A combustion apparatus, wherein an air flow control is performed by increasing an air amount, further shifting an upper limit of the temperature control width upward, and / or shifting a lower limit thereof downward. 【請求項５】 前記逆風検知手段が予め定められた逆風
判別時間だけ継続して逆風状態を検知したときは、逆風
対応制御が行われ、前記逆風検知手段が予め定められた
定常判別時間だけ継続して逆風停止状態を検知したとき
は、通常燃焼制御に移行することを特徴とする請求項１
乃至４のいずれか１項に記載の燃焼装置。5. When the backwind detection means continuously detects a backwind state for a predetermined backwind determination time, a backwind response control is performed and the backwind detection means continues for a predetermined steady determination time. When the back wind stop condition is detected, the normal combustion control is performed.
The combustion apparatus according to any one of claims 1 to 4. 【請求項６】 前記逆風検知手段が、所定の判別時間内
に所定の検知回数だけ逆風停止状態から逆風状態への変
動を検知したときは、所定の逆風対応制御に切り換わ
り、続いて逆風の停止を検知した時点から予め定められ
た待機時間だけ逆風対応制御を継続し、その後に通常燃
焼制御に移行することを特徴とする請求項１乃至５のい
ずれか１項に記載の燃焼装置。6. When the backwind detecting means detects a change from the backwind stopped state to the backwind state a predetermined number of times within a predetermined determination time, the control is switched to a predetermined backwind corresponding control, and subsequently the backwind is detected. The combustion apparatus according to any one of claims 1 to 5, characterized in that the backwind response control is continued for a predetermined standby time after the stop is detected, and then the normal combustion control is performed. 【請求項７】 前記逆風検知手段が、所定の判別時間内
に所定の検知回数だけ逆風停止状態から逆風状態への変
動を検知したときは、所定の逆風対応制御に切り換わ
り、それ以降に、予め定められた定常判別時間だけ継続
して逆風停止状態を検知したときには逆風対応制御を解
除して通常燃焼制御に移行することを特徴とする請求項
１乃至６のいずれか１項に記載の燃焼装置。7. When the backwind detecting means detects a change from the backwind stop state to the backwind state a predetermined number of times within a predetermined determination time, the predetermined backwind corresponding control is performed, and thereafter, The combustion according to any one of claims 1 to 6, wherein when a backflow stop state is detected continuously for a predetermined steady-state determination time, the backwind support control is canceled and the normal combustion control is performed. apparatus. 【請求項８】 燃焼部で燃焼した燃焼ガスが排出される
排気流路に上流側へ向けて加わる逆風の有無を検知する
逆風検知手段を備えた燃焼装置において、前記逆風検知
手段が、所定の判別時間内に所定の検知回数だけ逆風停
止状態から逆風状態への変動を検知したときは、所定の
逆風対応制御に切り換わり、続いて逆風の停止を検知し
た時点から予め定められた待機時間だけ逆風対応制御を
継続し、その後に通常燃焼制御に移行することを特徴と
する燃焼装置。8. A combustion apparatus comprising a backwind detecting means for detecting the presence or absence of backwind that is applied toward an upstream side of an exhaust flow path from which combustion gas burned in a combustion section is discharged, wherein the backwind detecting means is a predetermined one. When a change from the backwind stop state to the backwind state is detected a predetermined number of times within the discrimination time, the control switches to the predetermined backwind response control, and then only the predetermined waiting time from the time when the backwind stop is detected. A combustion device characterized by continuing control against headwind and then shifting to normal combustion control. 【請求項９】 燃焼部で燃焼した燃焼ガスが排出される
排気流路に上流側へ向けて加わる逆風の有無を検知する
逆風検知手段を備えた燃焼装置において、前記逆風検知
手段が、所定の判別時間内に所定の検知回数だけ逆風停
止状態から逆風状態への変動を検知したときは、所定の
逆風対応制御に切り換わり、それ以降に、予め定められ
た定常判別時間だけ継続して逆風停止状態を検知したと
きには逆風対応制御を解除して通常燃焼制御に移行する
ことを特徴とする請求項１乃至６のいずれか１項に記載
の燃焼装置。9. A combustion apparatus comprising a backwind detecting means for detecting the presence or absence of backwind that is applied toward an upstream side of an exhaust flow path from which combustion gas burned in a combustion section is discharged, wherein the backwind detecting means is a predetermined one. When the change from the backwind stop state to the backwind state is detected a predetermined number of times within the determination time, the control switches to the predetermined backwind response control, and thereafter, the backwind stop continues for a predetermined steady determination time. The combustion apparatus according to any one of claims 1 to 6, wherein when the state is detected, the control against the backwind is canceled and the normal combustion control is performed. 【請求項１０】 逆風検知手段に代わって風の有無を検
知する風検知手段を使用し、当該風検知手段が所定の強
さの風を検知したときに逆風の発生と判別することを特
徴とする請求項１乃至９のいずれかに１項に記載の燃焼
装置。10. A wind detecting means for detecting the presence or absence of wind is used in place of the back wind detecting means, and when the wind detecting means detects a wind having a predetermined strength, it is determined that a back wind is generated. The combustion apparatus according to any one of claims 1 to 9, wherein:
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015140964A (en) * 2014-01-28 2015-08-03 リンナイ株式会社 Hot water supply system
JP2018013289A (en) * 2016-07-20 2018-01-25 リンナイ株式会社 Combustion apparatus

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Publication number Priority date Publication date Assignee Title
JPH0436508A (en) * 1990-06-01 1992-02-06 Toshiba Corp Burner
JPH07190342A (en) * 1993-12-27 1995-07-28 Rinnai Corp Combustion equipment
JPH08233262A (en) * 1996-02-08 1996-09-10 Paloma Ind Ltd Safety device for gas combustor
JPH08261455A (en) * 1995-03-22 1996-10-11 Rinnai Corp Combustion device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0436508A (en) * 1990-06-01 1992-02-06 Toshiba Corp Burner
JPH07190342A (en) * 1993-12-27 1995-07-28 Rinnai Corp Combustion equipment
JPH08261455A (en) * 1995-03-22 1996-10-11 Rinnai Corp Combustion device
JPH08233262A (en) * 1996-02-08 1996-09-10 Paloma Ind Ltd Safety device for gas combustor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015140964A (en) * 2014-01-28 2015-08-03 リンナイ株式会社 Hot water supply system
JP2018013289A (en) * 2016-07-20 2018-01-25 リンナイ株式会社 Combustion apparatus

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