JP2002139225A - Heating device - Google Patents
Heating deviceInfo
- Publication number
- JP2002139225A JP2002139225A JP2000336398A JP2000336398A JP2002139225A JP 2002139225 A JP2002139225 A JP 2002139225A JP 2000336398 A JP2000336398 A JP 2000336398A JP 2000336398 A JP2000336398 A JP 2000336398A JP 2002139225 A JP2002139225 A JP 2002139225A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat
- burner
- supply amount
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、バーナ燃焼等を熱
源に用いる暖房装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus using burner combustion or the like as a heat source.
【０００２】[0002]
【従来の技術】従来、燃料ガスの燃焼により得た熱で熱
媒を加熱し、これを放熱器に循環させて放熱する暖房装
置では、熱媒の温度を検出し、この検出温度によって燃
料ガスの燃焼を制御するＦＢ制御が行われている。この
ような暖房装置において、熱媒の循環量が減少したと
き、熱媒温度のオーバーシュート等の異常現象の発生を
回避するため、熱交換器の出湯側にサーミスタを設け、
熱媒の検出温度が所定値、例えば８８℃に到達したと
き、バーナ燃焼を停止させたり、燃焼ガス量を最小にす
る等の方法が採られてきた。温水が沸騰温度を越えた
ら、燃料供給量を最小又は停止させる従来の技術とし
て、例えば、特開平１１−１１８２５７号「温水熱交換
器内蔵型ストーブ」が存在している。2. Description of the Related Art Conventionally, a heating device that heats a heat medium with heat obtained by combustion of a fuel gas, circulates the heat medium through a radiator and radiates heat, detects the temperature of the heat medium, and detects the temperature of the fuel gas based on the detected temperature. FB control for controlling the combustion of the fuel cell is performed. In such a heating device, when the circulation amount of the heat medium is reduced, a thermistor is provided on the tapping side of the heat exchanger to avoid occurrence of an abnormal phenomenon such as overshoot of the heat medium temperature,
When the detected temperature of the heat medium reaches a predetermined value, for example, 88 ° C., a method of stopping burner combustion or minimizing the amount of combustion gas has been adopted. As a conventional technique for minimizing or stopping the supply of fuel when the temperature of the hot water exceeds the boiling temperature, for example, Japanese Patent Application Laid-Open No. H11-118257, entitled "Hot Water Heat Exchanger Built-in Stove", exists.
【０００３】[0003]
【発明が解決しようとする課題】ところで、熱媒の循環
量が多く、容量の大きい暖房能力が要求される製品で
は、循環する熱媒に急激な流量変化が生じたとき、サー
ミスタの検出温度が所定値に達する前に熱媒に局部沸騰
が生じたり、燃料ガス量の低減までの時間差で熱媒温度
にオーバーシュートが生じたりするおそれがあった。By the way, in a product in which a large amount of heat medium is circulated and a heating capacity with a large capacity is required, when the circulating heat medium undergoes a sudden change in flow rate, the temperature detected by the thermistor is reduced. Before reaching the predetermined value, there is a possibility that local boiling occurs in the heat medium, or an overshoot occurs in the temperature of the heat medium due to a time difference until the fuel gas amount is reduced.
【０００４】温水を熱媒とする暖房装置には放熱負荷と
して複数の放熱器が接続されており、これら放熱器には
床暖房パネル等の低温（６０℃）の熱放出をするもの、
ファンコンベクタ等のように高温（８０℃）の熱放出を
するものが存在している。高温で制御させている場合、
放熱器を一斉に停止させたとすると、循環流量が減少し
て熱交換器内の温水が急激に上昇し、沸騰による釜鳴り
現象が生じる。温水温度が沸騰領域温度を越えたとき、
燃料供給量を減少させても、ＦＢ制御の応答遅延や熱交
換器の熱伝導遅延等により、温水温度にオーバーシュー
トが生じ、温水温度が沸騰温度を越える。このとき、釜
鳴りが発生する。A plurality of radiators are connected to a heating device using hot water as a heat medium as a radiating load. These radiators emit heat at a low temperature (60 ° C.) such as a floor heating panel.
There are those that emit heat at a high temperature (80 ° C.), such as fan convectors. If controlled at high temperature,
If the radiators are stopped all at once, the circulating flow rate will decrease and the hot water in the heat exchanger will rise rapidly, causing a boiling noise due to boiling. When the hot water temperature exceeds the boiling range temperature,
Even if the fuel supply amount is reduced, the hot water temperature overshoots due to a delay in the response of the FB control and a delay in the heat conduction of the heat exchanger, and the temperature of the hot water exceeds the boiling temperature. At this time, a hook noise occurs.
【０００５】例えば、熱交換器の出口温度が８０℃、循
環流量が１５リットル、給水温度が５０℃のとき、循環
流量が２リットルまで減少したとすれば、熱交換器の出
口温度をＸとすると、 （８０−５０）×１５＝現在の熱量＝（Ｘ−５０）×２ ・・・（１） となり、熱交換器の出口温度Ｘは、Ｘ＝２７５℃とな
り、沸騰温度を遙に越えてしまう。For example, if the outlet temperature of the heat exchanger is 80 ° C., the circulating flow rate is 15 liters, and the feed water temperature is 50 ° C., if the circulating flow rate is reduced to 2 liters, the outlet temperature of the heat exchanger is X. Then, (80−50) × 15 = current amount of heat = (X−50) × 2 (1), and the outlet temperature X of the heat exchanger becomes X = 275 ° C., far exceeding the boiling temperature. Would.
【０００６】ところで、暖房装置において、具体的な温
水回路では流量センサが設置されていないのが一般的で
あり、最小の循環流量は放熱端末で０．５〜１．０リッ
トル／分、熱交換器等の管路内でも３リットル／分と少
なく、大流量から小流量、即ち、２４〜３０リットル／
分から３リットル／分のような急激な流量変化に対応し
ている。そして、熱交換器内で熱交換されるフィンパイ
プの長さは１．０〜２．０ｍ程度であり、この先端にサ
ーミスタが設置されている。ＦＢ制御では、管内を流れ
る流速は１．５ｍ／秒以下のため、管内を流れるのに１
〜２秒位必要である。このようなＦＢ制御において、熱
交換器の出口で温度検出を行い、その温度検出に基づい
て燃料供給量を制限しても、局部沸騰やオーバーシュー
ト等を生じてしまうことが確認された。In a heating apparatus, a flow sensor is not generally provided in a specific hot water circuit, and the minimum circulation flow rate is 0.5 to 1.0 liter / min at a heat radiation terminal, and heat exchange is performed. The flow rate is as small as 3 liters / minute even in pipes of vessels and the like.
It corresponds to a rapid change in flow rate from 3 to 3 liters / minute. The length of the fin pipe that exchanges heat in the heat exchanger is about 1.0 to 2.0 m, and a thermistor is installed at the end. In the FB control, the flow velocity in the pipe is 1.5 m / sec or less.
About 2 seconds are required. In such FB control, it has been confirmed that even if the temperature is detected at the outlet of the heat exchanger and the fuel supply amount is limited based on the temperature detection, local boiling, overshoot, and the like may occur.
【０００７】このように、熱媒の局部沸騰や熱媒温度の
オーバーシュートを回避する手段として暖房制御で通常
用いられてきたＦＢ制御では、反応速度の関係で熱負荷
の急変による急激な流量変化に対する局部沸騰やオーバ
ーシュートを回避することができなかった。As described above, in the FB control, which is usually used in heating control as a means for avoiding local boiling of the heat medium and overshoot of the heat medium temperature, a sudden change in the flow rate due to a sudden change in the heat load due to the reaction speed. Could not avoid local boiling and overshoot.
【０００８】そこで、本発明は、熱負荷の急変に伴う熱
媒の急激な温度上昇等を回避した暖房装置を提供するこ
とを課題とする。Accordingly, an object of the present invention is to provide a heating device that avoids a rapid rise in temperature of a heat medium due to a sudden change in heat load.
【０００９】[0009]
【課題を解決するための手段】本発明の暖房装置は、バ
ーナ（４）、熱交換手段（熱交換器６）、温度検出手段
（温度センサ２８）、制御手段（主制御装置８０等）、
放熱手段（放熱器５１〜５７）等を備えて、熱媒の検出
温度によってバーナ燃焼を制御するとともに、単位時間
当たりの熱媒の温度上昇が所定値を越えたとき、バーナ
の燃料供給量を所定値以下に低下させる等して、熱負荷
の急変に伴う熱媒の温度上昇を回避でき、ＦＢ制御の反
応速度遅延による局部沸騰やオーバーシュートの発生を
未然に防止できる。The heating apparatus according to the present invention comprises a burner (4), a heat exchange means (heat exchanger 6), a temperature detection means (temperature sensor 28), a control means (main controller 80, etc.),
A radiator (radiators 51 to 57) and the like are provided to control burner combustion based on the detected temperature of the heat medium. When the temperature rise of the heat medium per unit time exceeds a predetermined value, the fuel supply amount of the burner is reduced. By lowering the temperature to a predetermined value or less, it is possible to avoid an increase in the temperature of the heat medium due to a sudden change in the heat load, and it is possible to prevent the occurrence of local boiling and overshoot due to a reaction speed delay in FB control.
【００１０】本発明の暖房装置は、バーナ（４）の燃焼
により発生した熱によって熱媒を加熱する熱交換手段
（熱交換器６）と、この熱交換手段で加熱した前記熱媒
を循環させて放熱させる放熱手段（放熱器５１〜５７）
と、前記熱媒の温度を検出する温度検出手段（温度セン
サ２８）と、この温度検出手段の検出温度によって前記
バーナの燃焼を制御するとともに、単位時間当たりの前
記熱媒の温度上昇が所定値を越えたとき、前記バーナに
対する燃料供給量を所定値以下に低下させる制御手段
（主制御装置８０等）とを備えたことを特徴とする。即
ち、熱媒の温度変化に応じたバーナの通常の燃焼制御と
は別に、単位時間当たりの熱媒の温度上昇を監視し、こ
の温度傾斜が所定値を越えたとき、バーナに対する燃料
供給量を所定値以下に低下させており、熱負荷の急変に
伴う熱媒の急激な温度上昇等を回避することができる。The heating device of the present invention circulates the heat medium (heat exchanger 6) for heating the heat medium by the heat generated by the combustion of the burner (4), and circulates the heat medium heated by the heat exchange means. Radiating means for radiating heat (radiators 51 to 57)
Temperature detection means (temperature sensor 28) for detecting the temperature of the heat medium; controlling the combustion of the burner based on the temperature detected by the temperature detection means; and increasing the temperature of the heat medium per unit time by a predetermined value. Control means (main controller 80, etc.) for reducing the fuel supply amount to the burner to a predetermined value or less when the pressure exceeds the predetermined value. That is, apart from the normal combustion control of the burner according to the temperature change of the heat medium, the temperature rise of the heat medium per unit time is monitored, and when the temperature gradient exceeds a predetermined value, the fuel supply amount to the burner is determined. Since the temperature is reduced to a predetermined value or less, it is possible to avoid an abrupt increase in the temperature of the heat medium due to a sudden change in the heat load.
【００１１】本発明の暖房装置は、前記燃料供給量の低
下は最小量に減少させることを特徴とする。熱負荷の急
変に伴う急激な温度上昇を抑制するには、燃料供給量の
大幅な減少が必要である。In the heating apparatus according to the present invention, the decrease in the fuel supply amount is reduced to a minimum amount. In order to suppress a rapid rise in temperature due to a sudden change in heat load, it is necessary to drastically reduce the fuel supply amount.
【００１２】本発明の暖房装置は、単位時間当たりの前
記熱媒の温度上昇が所定値を越えたとき、前記バーナに
対する燃料供給量を所定値以下に減少させた後、前記熱
媒の温度が所定値以下に低下したとき、前記燃料供給量
を低下前の前記燃焼供給量より低く、かつ最小供給量よ
り高い値に復帰させることを特徴とする。即ち、大幅な
燃料供給量の削減によって熱媒の温度が所定値以下に低
下したとき、沸騰やオーバーシュートを生じない程度の
制御領域として、燃焼供給量より低く、かつ最小供給量
より高い値に復帰させることにより、暖房を持続させ
る。According to the heating apparatus of the present invention, when the temperature rise of the heat medium per unit time exceeds a predetermined value, the fuel supply amount to the burner is reduced to a predetermined value or less, and then the temperature of the heat medium is reduced. When the fuel supply amount falls below a predetermined value, the fuel supply amount is returned to a value lower than the combustion supply amount before the decrease and higher than the minimum supply amount. That is, when the temperature of the heat medium falls below a predetermined value due to a significant reduction in the fuel supply amount, the control region is set to a degree that does not cause boiling or overshoot, and is set to a value lower than the combustion supply amount and higher than the minimum supply amount. By returning, heating is maintained.
【００１３】また、本発明の暖房装置は、バーナ（４）
の燃焼により発生した熱で熱媒を加熱する熱交換手段
（熱交換器６）と、この熱交換手段で加熱された前記熱
媒を循環させて放熱させる放熱手段（放熱器５１〜５
７）と、前記熱媒の循環流量を検出する流量検出手段
（流量センサ２６）と、この流量検出手段の検出流量に
よって前記バーナの燃焼を制御するとともに、前記検出
流量が所定値以下に低下したとき、前記バーナの燃焼量
を所定値以下に減少させる制御手段（主制御装置８０
等）とを備えたことを特徴とする。即ち、熱媒の流量変
化を検出し、バーナの通常の燃焼制御に加え、検出流量
が所定値以下に低下したとき、バーナの燃焼量を所定値
以下に減少させることにより、熱負荷の急変に伴う熱媒
の急激な温度上昇等を回避することができる。[0013] The heating device of the present invention further comprises a burner (4).
Heat exchange means (heat exchanger 6) for heating the heat medium with the heat generated by the combustion of the heat, and heat radiating means (radiators 51 to 5) for circulating the heat medium heated by the heat exchange means and radiating heat.
7), a flow rate detecting means (flow rate sensor 26) for detecting the circulating flow rate of the heat medium, and controlling the combustion of the burner by the detected flow rate of the flow rate detecting means, and the detected flow rate falls below a predetermined value. At this time, control means (main controller 80) for reducing the burner combustion amount to a predetermined value or less.
Etc.). That is, the change in the flow rate of the heat medium is detected, and in addition to the normal combustion control of the burner, when the detected flow rate decreases to a predetermined value or less, the combustion amount of the burner is reduced to a predetermined value or less, so that a sudden change in the heat load is caused. The accompanying rapid increase in the temperature of the heat medium can be avoided.
【００１４】[0014]
【発明の実施の形態】以下、本発明及びその実施の形態
を図面に示した実施例を参照して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention and embodiments thereof will be described below in detail with reference to embodiments shown in the drawings.
【００１５】図１及び図２は、本発明の暖房装置の実施
例を示し、図１はその配管構成、図２は制御系統を示し
ている。FIGS. 1 and 2 show an embodiment of a heating apparatus according to the present invention. FIG. 1 shows a piping configuration thereof, and FIG. 2 shows a control system.
【００１６】この暖房装置は、熱媒として温水を使用
し、熱源機として給湯装置が用いられている。即ち、暖
房装置本体２は給湯装置で構成され、給水を加熱する手
段として発熱手段であるバーナ４、熱交換手段である熱
交換器６を備えている。バーナ４には、燃料管８を通し
て燃料ガスＧが供給され、燃料管８には燃料ガスＧの供
給、供給停止を行う燃料元弁１０、燃料ガスＧの供給量
を調節する燃料比例弁１２が設けられ、また、バーナ４
の下部には燃焼用空気を供給するファン１４が設けら
れ、バーナ４の燃焼部近傍には点火手段として放電器１
６が設けられている。This heating device uses hot water as a heat medium and a hot water supply device as a heat source device. That is, the heating device main body 2 is constituted by a hot water supply device, and includes a burner 4 as a heat generating means and a heat exchanger 6 as a heat exchange means as means for heating the water supply. Fuel gas G is supplied to the burner 4 through a fuel pipe 8. The fuel pipe 8 is provided with a fuel source valve 10 for supplying and stopping the supply of the fuel gas G and a fuel proportional valve 12 for adjusting the supply amount of the fuel gas G. Provided and burner 4
A fan 14 for supplying combustion air is provided at a lower portion of the discharger 1.
6 are provided.
【００１７】熱交換器６には温水循環路として戻り管１
８及び往き管２０が接続され、加熱すべき水が戻り管１
８から熱交換器６に供給される。戻り管１８側には膨張
タンク２２、圧送手段として循環ポンプ２４、流量セン
サ２６が設けられ、また、往き管２０側には熱交換器６
の出口側の熱媒温度、即ち、温水温度を検出する手段と
して温度センサ２８が設置されている。この実施例で
は、流量センサ２６を設置して熱媒流量を計測している
が、このような流量センサ２６を設置しない場合もあり
得る。また、膨張タンク２２は温水の加熱による膨張圧
力を大気に開放する手段であって、この膨張タンク２２
には上水供給管３０を通して上水Ｗが供給される。上水
供給管３０には開閉弁３２が設けられ、この開閉により
膨張タンク２２への上水Ｗの補給調整が行われる。ま
た、戻り管１８と往き管２０との間には放熱負荷側の圧
力損失による温水ＨＷの循環不良を緩和する手段として
バイパス管３４が設けられている。The return pipe 1 is connected to the heat exchanger 6 as a hot water circuit.
8 and the outgoing pipe 20 are connected, and the water to be heated is returned to the return pipe 1
8 to the heat exchanger 6. An expansion tank 22 is provided on the return pipe 18 side, a circulating pump 24 and a flow rate sensor 26 are provided as pressure feeding means, and a heat exchanger 6 is provided on the going pipe 20 side.
A temperature sensor 28 is provided as a means for detecting the temperature of the heat medium on the outlet side of, that is, the temperature of hot water. In this embodiment, the flow rate sensor 26 is provided to measure the flow rate of the heat medium. However, such a flow rate sensor 26 may not be provided. The expansion tank 22 is a means for releasing expansion pressure caused by heating of hot water to the atmosphere.
Is supplied with clean water W through a clean water supply pipe 30. An open / close valve 32 is provided on the clean water supply pipe 30, and the supply of clean water W to the expansion tank 22 is adjusted by opening and closing the open / close valve 32. Further, a bypass pipe 34 is provided between the return pipe 18 and the outgoing pipe 20 as means for mitigating poor circulation of the hot water HW due to pressure loss on the heat radiation load side.
【００１８】そして、暖房装置本体２の戻り管１８には
ヘッダ３６、往き管２０にはヘッダ３８が設けられてお
り、各ヘッダ３６、３８より放熱負荷に対応する複数の
管路４０、４２が分岐され、各管路４０、４２間には複
数の放熱負荷、放熱手段として放熱器５１、５２、５
３、５４、５５、５６、５７が設置されている。例え
ば、放熱器５１〜５４は床暖房パネル又はファンコンベ
クタで構成されて第１の居住室６１に設置され、放熱器
５５は床暖房パネル又はファンコンベクタで構成されて
第２の居住室６２に設置され、また、放熱器５６、５７
は床暖房パネル又はファンコンベクタで構成されて第３
の居住室６３に設置されている。各管路４０、４２側に
は温水ＨＷの供給、供給遮断を切り換える温水供給弁７
１、７２、７３、７４、７５、７６、７７が設置されて
いる。A header 36 is provided on the return pipe 18 of the heating device main body 2 and a header 38 is provided on the going pipe 20. A plurality of pipes 40, 42 corresponding to the heat radiation load are provided from the headers 36, 38. A plurality of radiating loads are provided between the pipes 40 and 42, and radiators 51, 52, and 5 as radiating means.
3, 54, 55, 56, and 57 are provided. For example, the radiators 51 to 54 are constituted by floor heating panels or fan convectors and are installed in the first living room 61, and the radiators 55 are constituted by floor heating panels or fan convectors and are installed in the second living room 62. Radiators 56 and 57
Is composed of floor heating panel or fan convector
Is installed in the living room 63. A hot water supply valve 7 that switches between supply and cutoff of hot water HW is provided on each of the pipelines 40 and 42.
1, 72, 73, 74, 75, 76, 77 are provided.
【００１９】また、この暖房装置には、制御手段として
暖房装置本体２側の給湯制御を行う主制御装置８０、こ
の主制御装置８０と連係される外部制御装置８２、主制
御装置８０を遠隔操作するメインリモートコントローラ
（以下、「メインリモコン」という）８４、外部制御装
置８２を通して主制御装置８０を遠隔操作する複数のサ
ブリモートコントローラとしての室内リモートコントロ
ーラ（以下、「室内リモコン」という）８６、８８、９
０が設けられている。各室内リモコン８６、８８、９０
は、第１〜第３の居住室６１〜６３に設置されている。Further, the heating device includes a main control device 80 for controlling hot water supply on the side of the heating device main body 2 as a control means, an external control device 82 linked to the main control device 80, and a remote control of the main control device 80. Main remote controller (hereinafter, referred to as “main remote controller”) 84, and indoor remote controllers (hereinafter, referred to as “indoor remote controller”) 86, 88 as a plurality of sub remote controllers that remotely control main controller 80 through external controller 82. , 9
0 is provided. Each room remote controller 86, 88, 90
Are installed in the first to third living rooms 61 to 63.
【００２０】これら主制御装置８０、外部制御装置８
２、メインリモコン８４及び室内リモコン８６、８８、
９０について説明すると、図２に示すように、主制御装
置８０は制御演算素子としてＣＰＵ、記憶手段としてＲ
ＡＭ、ＲＯＭ等を備えた制御演算部９２、駆動回路９
４、検出回路９６、通信回路９８、１００を備えてい
る。駆動回路９４の駆動出力は、循環ポンプ２４、燃料
元弁１０、燃料比例弁１２、ファン１４、放電器１６等
の各アクチュエータに加えられ、検出回路９６には流量
センサ２６、温度センサ２８等のセンサ出力が加えられ
ている。通信回路９８、１００は外部制御装置８２又は
メインリモコン８４と連係させる通信手段であって、通
信回路９８は外部制御装置８２と制御データの授受、通
信回路１００はメインリモコン８４と制御データの授受
を行う。The main controller 80 and the external controller 8
2. Main remote controller 84 and indoor remote controllers 86, 88;
Referring to FIG. 2, as shown in FIG. 2, main controller 80 includes a CPU as a control operation element and an R as a storage means.
Control operation unit 92 including AM, ROM, etc., drive circuit 9
4, a detection circuit 96 and communication circuits 98 and 100 are provided. The drive output of the drive circuit 94 is applied to actuators such as the circulating pump 24, the fuel valve 10, the fuel proportional valve 12, the fan 14, and the discharger 16. The detection circuit 96 includes a flow sensor 26, a temperature sensor 28, and the like. Sensor output is applied. The communication circuits 98 and 100 are communication means for linking with the external control device 82 or the main remote controller 84. The communication circuit 98 transmits and receives control data to and from the external control device 82, and the communication circuit 100 transmits and receives control data to and from the main remote controller 84. Do.
【００２１】外部制御装置８２は、制御演算を行うＣＰ
Ｕ、記憶媒体であるＲＡＭ、ＲＯＭ等を備える制御演算
部１０２、駆動回路１０４、通信回路１０６、１０８を
備えている。駆動回路１０４には第１〜第３の温水供給
弁系統１１０、１１２、１１４に対する出力が得られ、
この実施例では温水供給弁系統１１０は温水供給弁７１
〜７４、温水供給弁系統１１２は温水供給弁７５、温水
供給弁系統１１４は温水供給弁７６、７７を構成してい
る。そして、通信回路１０６は主制御装置８０の通信回
路９８と有線又は無線によって連係され、また、通信回
路１０８は室内リモコン８６、８８、９０と有線又は無
線等で接続されている。The external control device 82 has a CP for performing a control operation.
U, a control operation unit 102 including a storage medium such as a RAM and a ROM, a drive circuit 104, and communication circuits 106 and 108. Outputs to the first to third hot water supply valve systems 110, 112, 114 are obtained in the drive circuit 104,
In this embodiment, the hot water supply valve system 110 is
74, the hot water supply valve system 112 constitutes the hot water supply valve 75, and the hot water supply valve system 114 constitutes the hot water supply valves 76 and 77. The communication circuit 106 is linked to the communication circuit 98 of the main control device 80 by wire or wirelessly, and the communication circuit 108 is connected to the indoor remote controllers 86, 88, 90 by wire or wireless.
【００２２】メインリモコン８４は、ＣＰＵ、ＲＡＭ、
ＲＯＭ等を備えた制御演算部１１６、通信回路１１８、
駆動回路１２０、表示装置１２２、入力回路１２４及び
スイッチ１２６等を備えている。通信回路１１８は主制
御装置８０側の通信回路１００と有線又は無線によって
接続され、駆動回路１２０から得られる表示出力が液晶
表示器、蛍光表示管又はＬＥＤ表示器等の表示装置１２
２に加えられ、運転状態や設定温度等が表示される。ま
た、入力回路１２４には運転スイッチ、温度設定スイッ
チ等のスイッチ１２６からの入力が加えられている。な
お、設定温度は主制御装置８０に固定値として記憶させ
たものを使用してもよい。The main remote controller 84 includes a CPU, a RAM,
A control operation unit 116 including a ROM, a communication circuit 118,
A driving circuit 120, a display device 122, an input circuit 124, a switch 126, and the like are provided. The communication circuit 118 is connected to the communication circuit 100 on the main control device 80 side by wire or wirelessly, and the display output obtained from the drive circuit 120 is used for the display device 12 such as a liquid crystal display, a fluorescent display tube, or an LED display.
In addition to 2, the operation state, the set temperature, and the like are displayed. Further, an input from a switch 126 such as an operation switch and a temperature setting switch is applied to the input circuit 124. Note that the set temperature may be stored in the main controller 80 as a fixed value.
【００２３】そして、室内リモコン８６、８８、９０
は、各室で用いられる操作手段であって、各々ＣＰＵ、
ＲＡＭ、ＲＯＭ等を備えた制御演算部１２８、通信回路
１３０、検出回路１３２、入力回路１３４、駆動回路１
３６、温度センサ１３８、スイッチ１４０、表示器１４
２等を備えている。通信回路１３０は、外部制御装置８
２の通信回路１０８と有線又は無線によって接続され、
検出回路１３２には温度センサ１３８で検出された室内
温度が取り込まれ、入力回路１３４には放熱負荷である
各放熱器５１〜５７の放熱動作を指令する運転スイッチ
や設定温度を選択する選択スイッチ等のスイッチ１４０
からスイッチ入力が加えられている。また、駆動回路１
３６に得られる表示出力は、液晶等の表示器１４２に加
えられ、この表示器１４２により室温、設定温度又は運
転状態等が表示される。Then, the indoor remote controllers 86, 88, 90
Are operation means used in each room, each of which is a CPU,
Control operation unit 128 including RAM, ROM, etc., communication circuit 130, detection circuit 132, input circuit 134, drive circuit 1
36, temperature sensor 138, switch 140, display 14
2 and so on. The communication circuit 130 includes the external control device 8
2 by a wired or wireless communication circuit 108,
The detection circuit 132 takes in the room temperature detected by the temperature sensor 138, and the input circuit 134 operates switches for instructing the heat radiation operation of each of the heat radiators 51 to 57, which are the heat radiation loads, and selection switches for selecting the set temperature. Switch 140
From the switch input. Also, the driving circuit 1
The display output obtained at 36 is applied to a display 142 such as a liquid crystal display, which displays the room temperature, the set temperature, the operating state, and the like.
【００２４】次に、動作を説明すると、この暖房装置に
おいても、温度センサ２８の検出温度によってバーナ４
に対する燃料ガスＧの供給量を制御するＦＢ制御を用い
ている。Next, the operation will be described. Also in this heating device, the burner 4 is controlled by the temperature detected by the temperature sensor 28.
FB control for controlling the amount of fuel gas G supplied to the fuel cell is used.
【００２５】そして、このＦＢ制御の補強手段としてＰ
ＩＤ制御を用いている。このＰＩＤ制御では、例えば、
熱交換器６の出湯温度が所定時間として０．５秒間に所
定の温度上昇として０．５℃だけ上昇し、且つ熱交換器
６の出湯温度の最高温度として８０℃の高温、即ち、目
標温度以上を検出したとき、バーナ４に対する燃料供給
量を所定値以下、例えば、最小供給量（最小号数）に制
御することで、可及的速やかに熱交換器６の温度上昇を
抑制する。次の所定時間（＝０．５秒）に所定の温度上
昇（＝０．５℃）を検出し、熱交換器６の出湯温度とし
て目標温度以上を検出したとき、同様の制御、即ち、バ
ーナ４に対する燃料供給量を所定値以下として最小供給
量（最小号数）を維持する。この結果、温水温度の過渡
的な温度上昇を防止でき、温水温度のオーバーシュート
や局部沸騰を未然に防止でき、この程度の温水温度の低
下は暖房運転における床温度等には殆ど影響しない。実
施例では、熱交換器６の出口側の温水温度の単位時間当
たりの温度上昇を０．５℃としているが、これは、測定
誤差を考えると限界の温度であり、また、所定時間とし
て０．５秒としているのは、現状、０．１秒（＝１００
ｍｓ）以下の設定ができないことによるが、所定時間、
所定温度上昇は任意に設定できる。As a means for reinforcing the FB control, P
ID control is used. In this PID control, for example,
The hot water temperature of the heat exchanger 6 rises by 0.5 ° C. as a predetermined temperature rise in 0.5 seconds as a predetermined time, and a high temperature of 80 ° C. as a maximum hot water temperature of the heat exchanger 6, that is, a target temperature When the above is detected, the temperature increase of the heat exchanger 6 is suppressed as quickly as possible by controlling the fuel supply amount to the burner 4 to a predetermined value or less, for example, a minimum supply amount (minimum number). When a predetermined temperature rise (= 0.5 ° C.) is detected in the next predetermined time (= 0.5 seconds) and a temperature equal to or higher than the target temperature is detected as the tapping temperature of the heat exchanger 6, the same control, that is, a burner The minimum supply amount (minimum number) is maintained by setting the fuel supply amount for No. 4 to a predetermined value or less. As a result, a transient rise in hot water temperature can be prevented, and overshoot and local boiling of the hot water temperature can be prevented beforehand. Such a decrease in the hot water temperature hardly affects the floor temperature in the heating operation. In the embodiment, the temperature rise per unit time of the hot water temperature on the outlet side of the heat exchanger 6 is set to 0.5 ° C., which is a limit temperature in consideration of a measurement error, and is 0 ° as the predetermined time. It is currently 0.1 seconds (= 100 seconds).
ms) Although the following settings cannot be made,
The predetermined temperature rise can be set arbitrarily.
【００２６】そして、出湯温度が下降したとき、最小号
数出力、即ち、最小供給量に降下させた直前の燃料供給
量以下、例えば、その供給量の半分の供給量に相当する
号数を供給した後、通常のＦＢ制御に復帰させる。When the temperature of the hot water drops, a minimum number output is supplied, that is, a number corresponding to a supply amount equal to or less than the fuel supply amount immediately before being reduced to the minimum supply amount, for example, a half of the supply amount. After that, the control is returned to the normal FB control.
【００２７】このような制御について、その制御動作を
図３に示すフローチャートを参照して説明する。ステッ
プＳ１では、メインリモコン８４の運転スイッチがＯＮ
になったか否かを判定し、メインリモコン８４がＯＮの
とき、ステップＳ２に移行し、運転状態を維持し、ステ
ップＳ２では室内リモコン８６、８８、９０の中、１つ
以上がＯＮとなっているか否かを判定する。室内リモコ
ン８６、８８、９０の何れかがＯＮの場合、ステップＳ
３に移行し、暖房装置本体２の燃焼及び温水の循環を開
始し、設定温度に燃焼制御を行う。ステップＳ１、ステ
ップＳ２でＮＯの場合、運転停止状態が維持される。Such control will be described with reference to a flowchart shown in FIG. In step S1, the operation switch of the main remote controller 84 is turned on.
It is determined whether or not the main remote controller 84 is ON, the process proceeds to step S2, and the driving state is maintained. In step S2, one or more of the indoor remote controllers 86, 88, 90 are turned ON. Is determined. If any of the indoor remote controllers 86, 88, 90 is ON, step S
The process proceeds to 3 to start the combustion of the heating device main body 2 and the circulation of the hot water, and perform the combustion control to the set temperature. If NO in steps S1 and S2, the operation stop state is maintained.
【００２８】ステップＳ４では、放熱負荷の急変を判定
しており、その急変として例えば、室内リモコン８６、
８８、９０の総てに運転停止命令が入力されたとき、メ
インリモコン８４より運転停止命令が入力されたとき、
又は、室温が設定温度に到達したとき等、総ての温水供
給弁７１〜７７が一斉に閉止されたか否かが判定され
る。放熱負荷の急変時（ステップＳ４でＹＥＳの場合）
には、ステップＳ５に移行し、燃料元弁１０を閉止して
バーナ４の燃焼を停止するとともに循環ポンプ２４を停
止させる。また、このような温水供給弁７１〜７７が閉
止されていない場合には、ステップＳ６に移行する。In step S4, a sudden change in the heat radiation load is determined. As the sudden change, for example, the indoor remote controller 86,
When the operation stop command is input to all of 88 and 90, when the operation stop instruction is input from the main remote controller 84,
Alternatively, it is determined whether all the hot water supply valves 71 to 77 have been closed at the same time, for example, when the room temperature has reached the set temperature. When the heat radiation load changes suddenly (YES in step S4)
In step S5, the fuel supply valve 10 is closed to stop the combustion of the burner 4, and the circulation pump 24 is stopped. If the hot water supply valves 71 to 77 are not closed, the process proceeds to step S6.
【００２９】ステップＳ６では、放熱負荷の急変として
熱交換器６の出湯温度が所定時間で所定温度上昇、例え
ば、０．５秒で０．５℃以上上昇したか否かを判定す
る。０．５℃以上の温度上昇が生じたときには循環流量
の減少に伴う出湯温度の上昇勾配が高いものと判断し、
ステップＳ７に移行して燃料比例弁１２の開度を最小供
給量まで減少させる。また、急激な温度上昇が生じてい
ないときには、燃料供給量を設定温度に調整するためス
テップＳ１に移行させる。In step S6, it is determined whether or not the tapping temperature of the heat exchanger 6 has risen by a predetermined temperature for a predetermined time, for example, 0.5 ° C. or more in 0.5 seconds, as a sudden change in the heat radiation load. When a temperature rise of 0.5 ° C. or more occurs, it is determined that the rising gradient of the tapping temperature with the decrease in the circulation flow rate is high,
In step S7, the opening of the fuel proportional valve 12 is reduced to the minimum supply amount. If no rapid temperature rise has occurred, the process proceeds to step S1 to adjust the fuel supply amount to the set temperature.
【００３０】このような制御において、熱交換器６の出
湯温度及びバーナ４への燃料供給量の推移を図４を参照
して説明すると、Ｍは熱交換器６の出湯温度の推移、Ｎ
は燃料供給量（号数）の推移を示している。期間ｔ1 に
おいて総ての温水供給弁７１〜７７が開かれて総ての放
熱器５１〜５７より放熱される。ａ点において、例えば
室内リモコン８６、９０をＯＦＦにして温水供給弁７１
〜７４、７６、７７が閉止されると、循環流量は大幅に
減少する。In this control, the transition of the outlet temperature of the heat exchanger 6 and the transition of the amount of fuel supplied to the burner 4 will be described with reference to FIG.
Indicates changes in fuel supply (number). All of the hot water supply valve 71 to 77 is radiated from all of the radiator 51 to 57 are opened in the period t 1. At a point a, for example, the indoor remote controllers 86 and 90 are turned off and the hot water supply valve 71 is turned off.
When ~ 74, 76, 77 are closed, the circulating flow rate is significantly reduced.
【００３１】この循環流量の減少に伴い、出湯温度は上
昇傾向に転ずる。期間ｔ2 は温度上昇を検出するサンプ
リング時間であって、この実施例では０．５秒毎に出湯
温度値を取り込み、このサンプリング時間経過後の検出
温度が設定温度に移行するように、燃料比例弁１２の開
度が調整される。即ち、ＦＢ制御が実行される。このと
き、燃料供給量を例えば２０号とする。As the circulating flow rate decreases, the tapping water temperature starts to increase. Period t 2 is a sampling time for detecting the temperature rise takes in the hot water temperature values every 0.5 seconds in this embodiment, as the detected temperature after the sampling time is shifted to the setting temperature, fuel proportional The opening of the valve 12 is adjusted. That is, FB control is executed. At this time, the fuel supply amount is, for example, No. 20.
【００３２】ここで、期間ｔ1 が経過したとき、例えば
０．５℃以上の温度上昇が生じると、循環流量が大幅に
減少したと判定し、期間ｔ2 経過後に燃料供給量を最小
供給量まで減少させる。この実施例では、燃料比例弁１
２が操作できる最小供給量は３号であるから、この最小
供給量に減少させた後、期間ｔ3 において、この燃料供
給量を維持させ、熱交換器６を通過する温水の温度上昇
量を抑制する。Here, when the period t 1 elapses, for example, when the temperature rises by 0.5 ° C. or more, it is determined that the circulating flow rate has significantly decreased, and the fuel supply amount is reduced to the minimum supply amount after the period t 2 elapses. To reduce. In this embodiment, the fuel proportional valve 1
Since the minimum supply amount that can be operated by No. 2 is No. 3 , after decreasing the minimum supply amount, the fuel supply amount is maintained during the period t 3 and the temperature rise amount of the hot water passing through the heat exchanger 6 is reduced. Suppress.
【００３３】その後、期間ｔ4 において、出湯温度が設
定温度に移行するように燃料比例弁１２の開度を調整す
る。この実施例では、循環流量の減少を出湯温度の上昇
勾配から監視し、上昇勾配が高ければ即座に燃料供給量
を減少させ、出湯温度を温水の沸騰温度未満に抑制して
いる。Thereafter, in a period t 4 , the opening of the fuel proportional valve 12 is adjusted so that the hot water temperature shifts to the set temperature. In this embodiment, the decrease in the circulation flow rate is monitored from the rising gradient of the tapping temperature, and if the rising gradient is high, the fuel supply amount is immediately reduced to keep the tapping temperature below the boiling temperature of the hot water.
【００３４】次に、他の制御動作例を図５に示すフロー
チャートを参照して説明する。この動作例は、流量セン
サ２６を用いた場合であり、所定時間当たり所定流量以
上減少したか否かを判断し、その結果、燃料供給量を減
少させている。Next, another example of the control operation will be described with reference to the flowchart shown in FIG. This operation example is a case where the flow rate sensor 26 is used, and it is determined whether or not the flow rate has decreased by a predetermined amount or more per predetermined time, and as a result, the fuel supply amount is reduced.
【００３５】ステップＳ１１では、メインリモコン８４
の運転スイッチがＯＮになったか否かが判定される。メ
インリモコン８４がＯＮの場合、ステップＳ１２に移行
し、室内リモコン８６、８８、９０の中、１つ以上がＯ
Ｎとなっているか否かが判定される。メインリモコン８
４又は室内リモコンリモコン８６、８８、９０の何れも
がＯＦＦの場合には、運転停止状態となる。ステップＳ
１３では、燃焼及び温水の循環が行われる。In step S11, the main remote controller 84
It is determined whether or not the operation switch has been turned ON. If the main remote controller 84 is ON, the process proceeds to step S12, and one or more of the indoor remote controllers 86, 88, and 90 are set to O.
It is determined whether or not N has been reached. Main remote control 8
4 or all of the indoor remote controllers 86, 88, and 90 are OFF, the operation is stopped. Step S
At 13, combustion and circulation of hot water are performed.
【００３６】ステップＳ１４では、放熱負荷の急変を判
定しており、その急変として例えば、室内リモコン８
６、８８、９０の総てに運転停止命令が入力されたと
き、メインリモコン８４より運転停止命令が入力された
とき、又は、室温が設定温度に到達したとき等、総ての
温水供給弁７１〜７７が一斉に閉止されたか否かが判定
される。負荷の急変時（ステップＳ１４でＹＥＳの場
合）には、ステップＳ１５に移行し、燃料元弁１０を閉
止してバーナ４の燃焼を停止するとともに循環ポンプ２
４を停止させる。また、このような温水供給弁７１〜７
７が閉止されていない場合には、ステップＳ１６に移行
する。In step S14, a sudden change in the heat radiation load is determined.
When the operation stop command is input to all of 6, 88, and 90, when the operation stop command is input from the main remote controller 84, or when the room temperature reaches the set temperature, all the hot water supply valves 71 -77 are simultaneously closed. When the load suddenly changes (YES in step S14), the process proceeds to step S15, in which the fuel supply valve 10 is closed to stop the combustion of the burner 4 and the circulation pump 2
4 is stopped. Also, such hot water supply valves 71 to 7
If not closed, the process proceeds to step S16.
【００３７】ステップＳ１６では、循環流量が所定時間
当たり所定流量以上減少したか否かを判定し、放熱負荷
の急変として急激な流量減少が生じたとき、熱交換器６
の出湯温度が沸騰温度を越えて上昇するものとし、ステ
ップＳ１７に移行して燃料比例弁１２の開度を最小供給
量に減少させる。また、急激な流量減少が生じていない
ときには燃料供給量を設定温度に調整するため、ステッ
プＳ１１に移行する。In step S16, it is determined whether or not the circulation flow rate has decreased by a predetermined flow rate per predetermined time or more.
It is assumed that the tapping temperature rises above the boiling temperature, and the process proceeds to step S17 to reduce the opening of the fuel proportional valve 12 to the minimum supply amount. If the flow rate has not suddenly decreased, the process proceeds to step S11 to adjust the fuel supply amount to the set temperature.
【００３８】このような制御によっても同様に、放熱負
荷の急変時、温水温度のオーバーシュートや沸騰を防止
でき、釜鳴り等の異常現象を未然に防止できる。By such control, similarly, when the heat radiation load changes suddenly, the overshoot and boiling of the hot water temperature can be prevented, and abnormal phenomena such as kettle noise can be prevented.
【００３９】次に、他の制御動作例を図６に示すフロー
チャートを参照して説明する。この動作例は、外部制御
装置８２の各温水供給弁系統１１０、１１２、１１４の
遮断動作を確認してバーナ４に対する燃料供給量を減少
させている。Next, another example of the control operation will be described with reference to the flowchart shown in FIG. In this operation example, the shutoff operation of each of the hot water supply valve systems 110, 112, and 114 of the external control device 82 is confirmed, and the fuel supply amount to the burner 4 is reduced.
【００４０】ステップＳ２１〜Ｓ２５の動作は、図３又
は図５に示した制御動作と同様である。The operations in steps S21 to S25 are the same as the control operations shown in FIG. 3 or FIG.
【００４１】ステップＳ２４で総ての温水供給弁７１〜
７７が閉止していないと判断された場合には、ステップ
Ｓ２６で温水供給弁７１〜７７の中、１つ以上が閉止さ
れたか否かが判定される。この場合、温水供給弁７１〜
７７の一部又は全部の閉止によって循環流量が減少する
ので、温水供給弁７１〜７７の閉止が確認されたとき、
ステップＳ２７に移行して燃料比例弁１２の開度を最小
供給量まで減少させ、また、温水供給弁７１〜７７の閉
止が確認されないとき、ステップＳ２１に移行する。In step S24, all the hot water supply valves 71 to 71
If it is determined that 77 has not been closed, it is determined in step S26 whether one or more of the hot water supply valves 71 to 77 has been closed. In this case, the hot water supply valves 71 to
Since the circulation flow rate is reduced by closing part or all of 77, when the closing of the hot water supply valves 71 to 77 is confirmed,
The process proceeds to step S27 to reduce the opening of the fuel proportional valve 12 to the minimum supply amount. If the closing of the hot water supply valves 71 to 77 is not confirmed, the process proceeds to step S21.
【００４２】次に、他の制御動作例を図７に示すフロー
チャートを参照して説明する。この動作例は、放熱負荷
の急変に伴う熱交換器６の出湯温度の温度勾配を監視し
て燃料供給量を減少させるとともに、循環流量が減少し
たときに最小供給量まで減少させた後、出湯温度を設定
温度に可及的に収束させるため燃料供給量を所定量回復
させている。Next, another control operation example will be described with reference to the flowchart shown in FIG. In this operation example, the fuel supply amount is reduced by monitoring the temperature gradient of the tapping temperature of the heat exchanger 6 due to a sudden change in the heat radiation load, and when the circulation flow rate is reduced, the fuel supply amount is reduced to the minimum supply amount. In order to make the temperature converge to the set temperature as much as possible, the fuel supply amount is recovered by a predetermined amount.
【００４３】ステップＳ３１〜Ｓ３５の動作は、図３、
図５又は図６の制御動作と同様である。The operation of steps S31 to S35 is as shown in FIG.
This is the same as the control operation of FIG. 5 or FIG.
【００４４】ステップＳ３４で温水供給弁７１〜７７の
総てが閉止していないと判定された場合、ステップＳ３
６では、熱交換器６の出湯温度が０．５秒で０．５℃以
上上昇したか否かを判定する。０．５℃以上の温度上昇
が認められたとき、循環流量の減少に伴う出湯温度の上
昇勾配が大きいと判断し、ステップＳ３７に移行して燃
料比例弁１２の開度を最小供給量まで減少させる。If it is determined in step S34 that all of the hot water supply valves 71 to 77 are not closed, step S3
At 6, it is determined whether or not the tapping temperature of the heat exchanger 6 has increased by 0.5 ° C. or more in 0.5 seconds. When a temperature rise of 0.5 ° C. or more is recognized, it is determined that the rising gradient of the tapping temperature with the decrease in the circulation flow rate is large, and the process proceeds to step S37 to reduce the opening of the fuel proportional valve 12 to the minimum supply amount. Let it.
【００４５】また、急激な温度上昇が認められないとき
にはステップＳ３１に移行する。ステップＳ３８では所
定時間経過したか否かが判定され、待機時間はこの例で
は０．５秒程度で、燃料供給量の減少に伴う出湯温度の
安定化を図る。On the other hand, when no rapid temperature rise is recognized, the flow shifts to step S31. In step S38, it is determined whether or not a predetermined time has elapsed. In this example, the standby time is about 0.5 seconds, and stabilization of the tapping temperature with a decrease in the fuel supply amount is achieved.
【００４６】ステップＳ３９では燃料供給量を減少前と
減少後の中間の燃料供給量まで増加させる。この実施例
では燃料供給量の減少前が２０号、減少後が３号である
から１１．５号まで燃料供給量を回復させる。燃料供給
量を回復させることにより出湯温度を設定温度に可及的
に回復させることができる。その後、ステップＳ３１か
らのルーチンを再び実行し、出湯温度が再び急激に上昇
するときにはステップＳ３６〜Ｓ３９を実行して適切な
燃料供給量に調整を行う。In step S39, the fuel supply amount is increased to an intermediate fuel supply amount before and after the decrease. In this embodiment, the fuel supply amount is reduced to No. 20 before the fuel supply amount is reduced and to No. 3 after the decrease. By recovering the fuel supply amount, the tapping temperature can be restored to the set temperature as much as possible. Thereafter, the routine from step S31 is executed again, and when the tap water temperature rises again sharply, steps S36 to S39 are executed to adjust the fuel supply amount to an appropriate value.
【００４７】このような制御によっても同様に、放熱負
荷の急変時、温水温度のオーバーシュートや沸騰を防止
でき、釜鳴り等の異常現象を未然に防止できる。By such control, similarly, when the heat radiation load changes suddenly, overshoot or boiling of the hot water temperature can be prevented, and abnormal phenomena such as kettle noise can be prevented.
【００４８】この制御動作による燃料供給制御を図８を
参照して説明すると、図８において、Ｍは熱交換器６の
出湯温度の推移、Ｎは燃料供給量の推移を示している。
期間ｔ5 において、総ての温水供給弁７１〜７７が開か
れて総ての放熱器５１〜５７より放熱が行われる。ｂ点
において、例えば室内リモコン８６、８８をＯＦＦさ
せ、温水供給弁７１〜７５を閉止させると、循環流量が
大幅に減少し、この循環流量の減少に伴い、出湯温度が
上昇する。期間ｔ6 は、温度上昇を検出するサンプリン
グ時間であって、０．５秒間隔で出湯温度値が取り込ま
れる。この期間ｔ 6 が経過したとき、上昇温度が例えば
０．５℃以上である場合、温水供給弁７１〜７７が閉じ
て循環流量が大幅に減少したと判断し、期間ｔ6 の経過
後に燃料供給量を最小供給量まで減少させる。FIG. 8 shows the fuel supply control by this control operation.
Describing with reference to FIG. 8, in FIG.
The transition of the tapping temperature, N indicates the transition of the fuel supply amount.
Period tFive, All the hot water supply valves 71 to 77 are open
Then, heat is radiated from all the radiators 51-57. point b
At this time, for example, the indoor remote controllers 86 and 88 are turned off.
When the hot water supply valves 71 to 75 are closed,
Dramatically reduced, and with this decrease in circulation flow rate,
To rise. Period t6Is a sampler that detects temperature rise
The tapping time is taken at 0.5 second intervals.
It is. This period t 6When the temperature rises, for example,
When the temperature is 0.5 ° C. or higher, the hot water supply valves 71 to 77 are closed.
It is determined that the circulation flow rate has significantly decreased6The passage of
Later, the fuel supply is reduced to a minimum supply.
【００４９】この実施例では燃料比例弁１２が操作でき
る最小供給量は３号であるから、この最小供給量に減少
させた後、期間ｔ7 において、この燃料供給量を維持さ
せて熱交換器６を通過する温水の温度上昇量を抑制す
る。期間ｔ7 が経過すると、減少前の燃料供給量（例え
ば２０号）と最小供給量（例えば３号）との中間（例え
ば１１．５号）まで燃料供給量を回復させ、期間ｔ8 に
おいて出湯温度が設定温度になるように燃料比例弁１２
の開度を調整する。Ａは、同一号数を示している。[0049] Since in this embodiment the minimum supply amount of fuel proportional valve 12 can be operated is No. 3, after reducing to the minimum supply quantity, in the period t 7, the heat exchanger to maintain the fuel supply amount The amount of temperature rise of the hot water passing through 6 is suppressed. When time t 7 elapses, to restore the fuel supply amount to the middle of the fuel supply amount before reduction (e.g. No. 20) and the minimum supply amount (e.g., No.3) (example 11.5 No.), tapping in the period t 8 The fuel proportional valve 12 is set so that the temperature reaches the set temperature.
Adjust the opening of. A indicates the same number.
【００５０】このような制御によれば、ＦＢ制御の応答
遅れを補完するとともに、燃料制御の連続性を維持し、
急激な温度変化を伴うことなく、信頼性の高い暖房制御
を実現することができる。According to this control, the response delay of the FB control is complemented, and the continuity of the fuel control is maintained.
It is possible to realize highly reliable heating control without a sudden temperature change.
【００５１】なお、実施例では、燃料ガスのバーナ燃焼
を熱源として用いた場合について説明したが、本発明の
暖房装置では、灯油燃焼を熱源としてもよく、また、電
熱を熱源としてもよい。In the embodiment, the case where burner combustion of fuel gas is used as a heat source has been described. However, in the heating device of the present invention, kerosene combustion may be used as a heat source, or electric heat may be used as a heat source.
【００５２】[0052]
【発明の効果】以上説明したように、本発明によれば、
熱負荷の急変に伴う熱媒の温度上昇を回避でき、ＦＢ制
御の反応速度遅延による局部沸騰やオーバーシュートの
発生を未然に防止でき、信頼性の高い暖房制御を実現で
きるとともに、熱交換手段等を損耗から防護でき、寿命
特性の優れた暖房装置を提供することができる。As described above, according to the present invention,
It is possible to avoid the temperature rise of the heat medium due to the rapid change of the heat load, to prevent the occurrence of local boiling and overshoot due to the reaction speed delay of the FB control, to realize highly reliable heating control, and to realize heat exchange means. Can be protected from wear, and a heating device having excellent life characteristics can be provided.
【図１】本発明の暖房装置の一実施例を示す配管構成図
である。FIG. 1 is a piping configuration diagram showing one embodiment of a heating device of the present invention.
【図２】暖房装置の制御装置を示すブロック図である。FIG. 2 is a block diagram illustrating a control device of the heating device.
【図３】温水温度の監視及び燃料供給量の制御を示すフ
ローチャートである。FIG. 3 is a flowchart illustrating monitoring of hot water temperature and control of a fuel supply amount.
【図４】出湯温度及び燃料供給量の推移を示すグラフで
ある。FIG. 4 is a graph showing changes in tapping temperature and fuel supply amount.
【図５】温水流量の監視及び燃料供給量の制御を示すフ
ローチャートである。FIG. 5 is a flowchart showing monitoring of a hot water flow rate and control of a fuel supply amount.
【図６】他の温水流量の監視及び燃料供給量の制御を示
すフローチャートである。FIG. 6 is a flowchart showing another monitoring of the flow rate of hot water and control of the fuel supply amount.
【図７】他の温水流量の監視及び燃料供給量の制御を示
すフローチャートである。FIG. 7 is a flowchart showing another monitoring of the flow rate of hot water and control of the fuel supply amount.
【図８】他の出湯温度及び燃料供給量の推移を示すグラ
フである。FIG. 8 is a graph showing changes in other tapping temperatures and fuel supply amounts.
４ バーナ ６ 熱交換器（熱交換手段） ２６ 流量センサ（流量検出手段） ２８ 温度センサ（温度検出手段） ５１〜５７ 放熱器（放熱手段） Reference Signs List 4 burner 6 heat exchanger (heat exchange means) 26 flow sensor (flow detection means) 28 temperature sensor (temperature detection means) 51-57 radiator (radiation means)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小林 志銘 静岡県富士市西柏原新田201番地 高木産 業株式会社内 Ｆターム(参考） 3L070 BB01 DD02 DD06 DE06 DF06 DF12 DG02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shiname Kobayashi 201 Nishi-Kashiwara Nitta, Fuji City, Shizuoka Prefecture F-term in Takagi Industries Co., Ltd. (Reference) 3L070 BB01 DD02 DD06 DE06 DF06 DF12 DG02
Claims (4)
熱媒を加熱する熱交換手段と、 この熱交換手段で加熱した前記熱媒を循環させて放熱さ
せる放熱手段と、 前記熱媒の温度を検出する温度検出手段と、 この温度検出手段の検出温度によって前記バーナの燃焼
を制御するとともに、単位時間当たりの前記熱媒の温度
上昇が所定値を越えたとき、前記バーナに対する燃料供
給量を所定値以下に低下させる制御手段と、 を備えたことを特徴とする暖房装置。1. A heat exchange means for heating a heat medium by heat generated by combustion of a burner, a heat radiation means for circulating the heat medium heated by the heat exchange means to radiate heat, and detecting a temperature of the heat medium. Temperature detection means for controlling the combustion of the burner according to the temperature detected by the temperature detection means, and when the temperature rise of the heating medium per unit time exceeds a predetermined value, the fuel supply amount to the burner is set to a predetermined value. A heating device comprising: control means for reducing the following:
ることを特徴とする請求項１記載の暖房装置。2. The heating apparatus according to claim 1, wherein the decrease in the fuel supply amount is reduced to a minimum amount.
所定値を越えたとき、前記バーナに対する燃料供給量を
所定値以下に減少させた後、前記熱媒の温度が所定値以
下に低下したとき、前記燃料供給量を低下前の前記燃焼
供給量より低く、かつ最小供給量より高い値に復帰させ
ることを特徴とする請求項１記載の暖房装置。3. When the temperature rise of the heating medium per unit time exceeds a predetermined value, the fuel supply amount to the burner is reduced to a predetermined value or less, and then the temperature of the heating medium falls to a predetermined value or less. The heating device according to claim 1, wherein when the fuel supply amount is reduced, the fuel supply amount is returned to a value lower than the combustion supply amount before the decrease and higher than a minimum supply amount.
加熱する熱交換手段と、 この熱交換手段で加熱された前記熱媒を循環させて放熱
させる放熱手段と、 前記熱媒の循環流量を検出する流量検出手段と、 この流量検出手段の検出流量によって前記バーナの燃焼
を制御するとともに、前記検出流量が所定値以下に低下
したとき、前記バーナの燃焼量を所定値以下に減少させ
る制御手段と、 を備えたことを特徴とする暖房装置。4. A heat exchange means for heating a heat medium with heat generated by combustion of a burner; a heat radiation means for circulating the heat medium heated by the heat exchange means to radiate heat; and a circulating flow rate of the heat medium Controlling the combustion of the burner by the detected flow rate of the flow rate detecting means, and reducing the burned amount of the burner to a predetermined value or less when the detected flow rate decreases to a predetermined value or less. Means, and heating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000336398A JP4017817B2 (en) | 2000-11-02 | 2000-11-02 | Heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000336398A JP4017817B2 (en) | 2000-11-02 | 2000-11-02 | Heating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002139225A true JP2002139225A (en) | 2002-05-17 |
| JP4017817B2 JP4017817B2 (en) | 2007-12-05 |
Family
ID=18811979
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000336398A Expired - Fee Related JP4017817B2 (en) | 2000-11-02 | 2000-11-02 | Heating system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4017817B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007101052A (en) * | 2005-10-04 | 2007-04-19 | Matsushita Electric Ind Co Ltd | Hot water supply apparatus |
-
2000
- 2000-11-02 JP JP2000336398A patent/JP4017817B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007101052A (en) * | 2005-10-04 | 2007-04-19 | Matsushita Electric Ind Co Ltd | Hot water supply apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4017817B2 (en) | 2007-12-05 |
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