JPH04198661A - Heating control method - Google Patents
Heating control methodInfo
- Publication number
- JPH04198661A JPH04198661A JP33204090A JP33204090A JPH04198661A JP H04198661 A JPH04198661 A JP H04198661A JP 33204090 A JP33204090 A JP 33204090A JP 33204090 A JP33204090 A JP 33204090A JP H04198661 A JPH04198661 A JP H04198661A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- temperature
- burner
- capacity
- circulating water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 title claims description 29
- 238000002485 combustion reaction Methods 0.000 claims abstract description 138
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000002737 fuel gas Substances 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims description 6
- 238000010926 purge Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Landscapes
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、暖房負荷が小さい時の着火時に最適の循環水
温度制御を行う暖房制御方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heating control method that performs optimal circulating water temperature control at the time of ignition when the heating load is small.
一般に暖房装置と巳で、加熱器において加熱された温水
を室内放熱器Ｌ：循環させて暖房を行う温水暖房装置が
用いられている。In general, a hot water heating device is used in which hot water heated in a heater is circulated through an indoor radiator L to perform heating.
温水暖房装置として二よ、熱交換器とノ＼−すとを有し
、バーナを大能力燃焼と小能力燃焼とに切り換える能力
切換弁と燃料量を制御する比例弁が設けられた加熱器と
、放熱用熱交換器とファンとを有する放熱器と、加熱器
と放熱器とを結合する循環管と、循環管に設けられた循
環ポンプとを有するものが広く用いられている。Second, as a hot water heating system, there is a heater that has a heat exchanger and a nozzle, and is equipped with a capacity switching valve that switches the burner between high-capacity combustion and low-capacity combustion, and a proportional valve that controls the amount of fuel. Widely used devices include a radiator having a heat exchanger for heat radiation and a fan, a circulation pipe that connects the heater and the radiator, and a circulation pump provided in the circulation pipe.
上記温水暖房装置の制御は、第４図のフローチャートに
示されるように、加熱器から出湯される循環水温（暖房
往き温度）Ｔｈが設定温度Ｔ、より１０度以上低い（Ｔ
あごＴ、 −１０°Ｃ）場合にブリバージからバーナへ
の点火動作を行う。As shown in the flowchart of FIG. 4, the hot water heating system is controlled so that the circulating water temperature (heating outlet temperature) Th discharged from the heater is at least 10 degrees lower than the set temperature T (T
ignition operation from the bribarge to the burner when the temperature is -10°C).
バーナに点火した後、循環水温Ｔｈと設定温度Ｔ、とを
比較し、循環水温Ｔｈが設定温度Ｔ、よりも４０度以上
低い場合（’ｒ ｈ≦Ｔ、−４０°Ｃ）に、負荷が大き
いと判定して、大能力でバーナの燃焼を開始するコール
ドスタートを行う。After igniting the burner, compare the circulating water temperature Th with the set temperature T, and if the circulating water temperature Th is 40 degrees or more lower than the set temperature T ('r h≦T, -40°C), the load is It determines that it is large, and performs a cold start to start burning the burner at high capacity.
コールドスタートを行う時には、能力切換弁をオン（開
）し、時間とともに比例弁の開度を増大させて燃料ガス
量を増大さセでいく強制燃焼ルーチンを行い、循環水温
Ｔ１と設定温度Ｔ６との差が５度以下（Ｔあ≧Ｔ、−５
°Ｃ）となった時、通常の燃焼制御として用いられてい
る比例積分制御（ＰｌｉｌＪ御）に切り換えられる。When performing a cold start, the capacity switching valve is turned on (opened), and a forced combustion routine is performed in which the opening of the proportional valve is increased over time to increase the amount of fuel gas, and the circulating water temperature T1 and set temperature T6 are adjusted. The difference between is 5 degrees or less (Ta≧T, -5
°C), the switch is made to proportional-integral control (PlilJ control), which is used as normal combustion control.
一方、循環水温Ｔ、と設定温度Ｔ、との差が４０度未満
（Ｔゎ＞７． ４０℃）の場合には、負荷が小さいと判
定し、能力切換弁をオフ（閉弁）して小能力でバーナの
燃焼を開始するホントスタートを行い、時間とともに比
例弁の開度を増大させて燃料ガス量を増大させる強制燃
焼ルーチンに入って、循環水温Ｔ１と設定温度Ｔ８との
差が５度以下（Ｔ１≧Ｔ８−５°Ｃ）となった時、通常
の燃焼制御として用いられている比例積分制御（ＰＩ副
制御に切り換えられる。On the other hand, if the difference between the circulating water temperature T and the set temperature T is less than 40 degrees (Tゎ>7.40 degrees Celsius), the load is determined to be small and the capacity switching valve is turned off (closed). A true start is performed to start combustion of the burner at a small capacity, and a forced combustion routine is started in which the opening degree of the proportional valve is increased over time to increase the amount of fuel gas.The difference between the circulating water temperature T1 and the set temperature T8 is 5. When the temperature is below 5°C (T1≧T8-5°C), the combustion control is switched to proportional-integral control (PI sub-control), which is used as normal combustion control.
しかしながら、上記従来の温水暖房装置の制御において
は、時間とともに比例弁の開度を増大さ廿で燃料ガス量
を増大させてい←強制燃焼ルーチンを行うために、負荷
が小さい場合Ｌ＝はｔ檄に循環水温Ｔゎが上昇して沸騰
する、或い；＝循環水温Ｔ、が設定温度Ｔ、に違して燃
焼が停止されることにより、点火・消火を繰り返すハン
チングを生しる恐れがあるという問題があった。However, in the conventional control of the hot water heating system described above, the opening degree of the proportional valve is increased over time, and the amount of fuel gas is increased.In order to perform a forced combustion routine, when the load is small, L = t. When the circulating water temperature T rises and boils, or when the circulating water temperature T is different from the set temperature T, combustion is stopped, which may cause hunting that repeats ignition and extinguishing. There was a problem.
本発明の目的は、負荷が小さい場合においても着火時に
安定して設定値に近い循環水温を保持することのできる
暖房制御方法を提供することである。An object of the present invention is to provide a heating control method that can stably maintain a circulating water temperature close to a set value at the time of ignition even when the load is small.
上記目的を達成するために本発明の暖房制御方法は、熱
交換器とバーナとを有し、バーナを大能力燃焼と小能力
燃焼とに切り換える能力切換弁と燃料量を制御する比例
弁が設けられた加熱器と、放熱用熱交換器とファンとを
有する放熱器と、加熱器と放熱器とを結合する循環管と
、循環管に設けられた循環ポンプとを有する温水暖房装
置において、設定温度Ｔ、より第１所定温度（例えば、
１０度）だけ低い着火判定温度Ｔ０よりも循環水温Ｔｈ
が低い時に、ブリバージ動作からノ＼−すの点火動作を
行ってバーナに点火し、能力切換弁をオフ（閉弁）して
小能力とするとともに、比例弁の開度を最小として最小
燃焼モードでバーナの燃焼を開始し、循環水温Ｔ１が上
記着火判定温度Ｔ。In order to achieve the above object, the heating control method of the present invention includes a heat exchanger and a burner, and is provided with a capacity switching valve that switches the burner between high-capacity combustion and low-capacity combustion, and a proportional valve that controls the amount of fuel. In a hot water heating system, the hot water heating system includes a heater, a radiator having a heat exchanger for heat radiation and a fan, a circulation pipe that connects the heater and the radiator, and a circulation pump provided in the circulation pipe. The temperature T is higher than the first predetermined temperature (for example,
The circulating water temperature Th is 10 degrees) lower than the ignition judgment temperature T0.
When the current is low, the burner is ignited by performing the ignition operation from the briverge operation to the nozzle, and the capacity switching valve is turned off (closed) to set the capacity to low capacity, and the opening degree of the proportional valve is set to the minimum to set the minimum combustion mode. The burner starts combustion at , and the circulating water temperature T1 reaches the above ignition judgment temperature T.
より第２所定温度（例えば、２度）だけ低い第１最小燃
焼判定温度ＴＲＩ未満の場合Ｌコのみ、循環水温Ｔ１と
設定温度Ｔ１の差に応じて、大能力燃焼または小能力燃
焼を選択し、時間経過とともに比例弁の開度を増大させ
て燃料ガス量を増大させる強制燃焼ルーチンに入る。If the first minimum combustion determination temperature TRI is lower by a second predetermined temperature (for example, 2 degrees) than that of , a forced combustion routine is entered in which the opening degree of the proportional valve is increased over time to increase the amount of fuel gas.
或いは、設定温度Ｔ、より第１所定温度だけ低い着火判
定温度Ｔ０よりも循環水温Ｔｈが低い時に、ブリバージ
動作からバーナの点火動作を行ってバーナに点火し、能
力切換弁をオフ（閉弁）して小能力とするとともに、比
例弁の開度を最小として最小燃焼モードでバーナの燃焼
を開始し、最小燃焼モードでのバーナの燃焼が所定時間
（例えば、２分間）経過する前には、循環水温Ｔｈが第
１最小燃焼判定温度Ｔ１未満の場合にのみ、循環水温Ｔ
ｈと設定温度Ｔ、との差に応じて、大能力燃焼または小
能力燃焼を選択し、強制燃焼ル−チンに入り、循環水温
Ｔ１が第１１１小燃焼判定温度Ｔｅ１以上の場合には最
小燃焼モードでバーナの燃焼を継続させる一方、所定時
間経過後には、循環水温Ｔ、が上記着火判定温度Ｔ０よ
り第３所定温度（例えば、２度）だけ高い第２最小燃焼
判定温度Ｔ、１未満の場合にのみ、循環水温Ｔ１と設定
温度Ｔ、の差に応じて、大能力燃焼または小能力燃焼を
選択し、強制燃焼ルーチンに入るようにしても良い。Alternatively, when the circulating water temperature Th is lower than the ignition judgment temperature T0, which is lower than the set temperature T by a first predetermined temperature, the burner is ignited by performing the burner ignition operation from the bribarge operation, and the capacity switching valve is turned off (closed). At the same time, the opening of the proportional valve is set to the minimum and the burner starts burning in the minimum combustion mode, and before the burner starts burning in the minimum combustion mode for a predetermined period of time (for example, 2 minutes), Only when the circulating water temperature Th is less than the first minimum combustion determination temperature T1, the circulating water temperature T
Depending on the difference between h and the set temperature T, large capacity combustion or small capacity combustion is selected, a forced combustion routine is entered, and if the circulating water temperature T1 is equal to or higher than the 111th small combustion judgment temperature Te1, minimum combustion is performed. While the burner continues to burn in the mode, after a predetermined period of time has elapsed, the circulating water temperature T is set to a second minimum combustion judgment temperature T, which is higher than the ignition judgment temperature T0 by a third predetermined temperature (for example, 2 degrees), which is less than 1. Only in this case, high-capacity combustion or low-capacity combustion may be selected depending on the difference between the circulating water temperature T1 and the set temperature T, and the forced combustion routine may be entered.
上記のとおり構成された本発明の暖房制御方法において
は、循環水温Ｔ、が着火判定温度Ｔ０よりも低い時に、
プリバージ動作からバーナの点火動作を行ってバーナに
点火し、能力切換弁をオフ（閉弁）して小能力とすると
ともに、比例弁の開度を最小として最小燃焼モードでバ
ーナの燃焼を開始し、循環水温Ｔｈが上記着火判定温度
Ｔ０より第２所定温度（例えば、２度）だけ低い第１最
小燃焼判定温度７１１１未満の場合にのみ、循環水温Ｔ
あと設定温度Ｔ、の差に応じて、大能力燃燦または小能
力燃焼を選択し、時間とともに比例弁の開度を増大させ
てｔ！ｊ！、ｌガス量を増大させる強制燃焼ルーチンに
入り、循環水温Ｔ１が第１最小燃焼判定温度Ｔｅ１以上
の場合りこは最小燃焼モードでノ＼−すの燃焼を継続す
る。In the heating control method of the present invention configured as described above, when the circulating water temperature T is lower than the ignition determination temperature T0,
From the pre-barge operation, the burner is ignited by igniting the burner, the capacity switching valve is turned off (closed) to reduce the capacity, and the opening of the proportional valve is set to the minimum to start burning the burner in the minimum combustion mode. , only when the circulating water temperature Th is less than the first minimum combustion determination temperature 7111, which is lower than the ignition determination temperature T0 by a second predetermined temperature (for example, 2 degrees), the circulating water temperature Th
Also, depending on the difference in the set temperature T, select high-capacity combustion or small-capacity combustion, and increase the opening of the proportional valve over time to set t! j! , l enters a forced combustion routine to increase the amount of gas, and if the circulating water temperature T1 is equal to or higher than the first minimum combustion determination temperature Te1, Riko continues to burn the fuel in the minimum combustion mode.
或いは、バーナに着火した後、能力切換弁をオフ（閉弁
）して小能力とするとともに、比例弁の開度を最小とし
て最小燃焼モードでバーナの燃焼を開始し、最小燃焼モ
ードでのバーナの燃焼が所定時間（例えば、２分間）経
過する前には、循環水温Ｔ６が第１最小燃焼判定温度Ｔ
１□未満の場合にのみ、循環水温Ｔ１と設定温度Ｔ、の
差に応じて、大能力燃焼または小能力燃焼を選択し、強
制燃焼ルーチンに入り、循環水温Ｔ１が第１最小燃焼判
定温度Ｔ１以上の場合には最小燃焼モードでバーナの燃
焼を継続させる一方、所定時間経過後には、循環水温Ｔ
、が上記着火判定温度Ｔｏより第３所定温度（例えば、
２度）だけ高い第２最小燃焼判定温度Ｔ、２未満の場合
のみ、循環水温Ｔ。Alternatively, after the burner is ignited, the capacity switching valve is turned off (closed) to reduce the capacity, and the opening of the proportional valve is set to the minimum to start burning the burner in the minimum combustion mode. The circulating water temperature T6 reaches the first minimum combustion determination temperature T before the combustion of
Only when the temperature is less than 1□, large capacity combustion or small capacity combustion is selected according to the difference between the circulating water temperature T1 and the set temperature T, a forced combustion routine is entered, and the circulating water temperature T1 is set to the first minimum combustion determination temperature T1. In the above cases, the burner continues to burn in the minimum combustion mode, and after a predetermined period of time, the circulating water temperature T
, is a third predetermined temperature (for example,
2 degrees) higher than the second minimum combustion determination temperature T, and only if it is less than 2 degrees, the circulating water temperature T.
と設定温度Ｔ５の差に応じて、大能力燃焼またはづ＼能
力燃焼を選択し、強制燃焼ルーチンに入り、循環水温Ｔ
、が第２最小燃焼判定温度Ｔい２以上の場合には最小燃
焼モードでバーナの燃焼を継続させる。Depending on the difference between the temperature T5 and the set temperature T5, high-capacity combustion or low-capacity combustion is selected, the forced combustion routine is entered, and the circulating water temperature T5 is selected.
is equal to or higher than the second minimum combustion determination temperature T2, the burner continues combustion in the minimum combustion mode.
；実施例〕 体発明の実施例を図面に基づいて説明する。;Example〕 Embodiments of the present invention will be described based on the drawings.
第１図において、加熱器ｌは、上方に配設された熱交換
器２と、下方に配設されたバーナ３と、バーナ３の下部
に配置されたファン９とを有し、バーナ３への燃料ガス
路４に比例弁５、を上回６及び元’を上回７が設けられ
ている、
バーナ３は第１燃焼部３１と第２燃焼部３２とから成り
、第２燃焼部３２は能力切換弁８を介して燃料ガス路４
に連通されており、能力切換弁８をオン（開弁）すると
第１燃焼部３１と第２燃焼部３２に燃料ガスが供給され
て大能力燃焼が行われ、能力切換弁８をオフ（閉弁）す
ると第１燃焼部３１にのみ燃料ガスが供給されて小能力
燃焼が行われる。In FIG. 1, the heater l has a heat exchanger 2 disposed above, a burner 3 disposed below, and a fan 9 disposed below the burner 3. A proportional valve 5, a proportional valve 5, a proportional valve 6, and a proportional valve 7 are provided in the fuel gas path 4 of the burner 3. is connected to the fuel gas path 4 via the capacity switching valve 8.
When the capacity switching valve 8 is turned on (opened), fuel gas is supplied to the first combustion section 31 and the second combustion section 32 to perform high capacity combustion, and when the capacity switching valve 8 is turned off (closed). valve), fuel gas is supplied only to the first combustion section 31 and small capacity combustion is performed.
熱交換器２には、入水管２１が入口側に、出湯管２２が
出口側りこ接続されており、出湯管２２二＝放熱器（図
示せず）に連通される暖房往き管２５Ｌこ接続される。To the heat exchanger 2, an inlet pipe 21 is connected to the inlet side, a hot water outlet pipe 22 is connected to the outlet side, and the hot water outlet pipe 222 is connected to the heating outgoing pipe 25L which communicates with a radiator (not shown). Ru.
出湯管２２にハイリミットスイッチ１５と、出湯温度で
ある循環水温Ｔ、を検出する温度センサ１６とが配設さ
れており、入水管２１と出湯管２２に跨がって温度ヒユ
ーズ１７が８ｉｌｌ：されている。A high limit switch 15 and a temperature sensor 16 for detecting the circulating water temperature T, which is the hot water temperature, are installed in the hot water outlet pipe 22, and a temperature fuse 17 is installed across the water inlet pipe 21 and the hot water outlet pipe 22. has been done.
入水管２１は循環ポンプ２０を介して膨張タンク１１に
接続されており、膨張タンク１１には水位検出用電極１
２が設けられ、膨張タンク１１の上方に水電磁弁１３を
有する給水管１０及びオーバーフロー管１４が接続され
、下部には放熱器からの暖房戻り管２６が接続されてい
る。The water inlet pipe 21 is connected to the expansion tank 11 via the circulation pump 20, and the expansion tank 11 is equipped with a water level detection electrode 1.
A water supply pipe 10 having a water electromagnetic valve 13 and an overflow pipe 14 are connected above the expansion tank 11, and a heating return pipe 26 from a radiator is connected to the lower part.
暖房往き管２５と暖房戻り管２６はオリフィス２４を介
してバイパス管２３で互いに連通されている。The heating outgoing pipe 25 and the heating return pipe 26 are communicated with each other through an orifice 24 and a bypass pipe 23 .
本発明の第１実施例である上記加熱器１の燃焼制御即ち
暖房制御方法を第２図のフローチャートに基づいて説明
する。A combustion control method, that is, a heating control method for the heater 1, which is a first embodiment of the present invention, will be explained based on the flowchart shown in FIG.
設定温度Ｔ、より第１所定温度（例えば１０℃）だけ低
い着火判定温度７．（Ｔｏ＝Ｔ、−１０°Ｃ）よちも循
環水温Ｔ１が低い（Ｔ１≦Ｔｏ ）時に、プリへ−ジ動
作からバーナＯ点火動作を行ってバーナ３に着火する。Ignition judgment temperature that is lower than the set temperature T by a first predetermined temperature (for example, 10° C.)7. (To=T, -10°C) When the circulating water temperature T1 is lower than (T1≦To), the burner O ignition operation is performed from the prehage operation to ignite the burner 3.
バーナ３の着火が、暖房スイッチ（或いは運転スイッチ
）をオンにした時の最初の着火である初回着火である場
合に二よ、加熱器から出湯される循環水温（暖房往き温
度）Ｔ、と設定温度Ｔ８とを比較し、循環水温Ｔ、が設
定温度Ｔ、よりも４０度以上低い場合（”ｒ ｈ≦Ｔ、
−４０°Ｃ）に、負荷が大きいと判定して、大能力でバ
ーナ３の燃焼を開始するコールドスタートを行う。When the ignition of burner 3 is the first ignition, which is the first ignition when the heating switch (or operation switch) is turned on, the temperature of the circulating water discharged from the heater (heating temperature) is set as T. Compare the temperature T8 and if the circulating water temperature T is 40 degrees or more lower than the set temperature T ("r h≦T,
-40°C), it is determined that the load is large, and a cold start is performed in which the burner 3 starts combustion at high capacity.
コールドスタートを行う時には、能力切換弁８をオン（
開）し、時間とともに比例弁５の開度を増大させて燃料
ガス量を増大させる強制燃焼ルーチンを行い、ＷＩ環水
温Ｔ、と設定温度Ｔ６との差が５度以下（’ｒ ｈ≧Ｔ
６−５°Ｃ）となった時、通常の燃焼制御として用いら
れている比例積分制御（ＰＩ開制御に切り換えられる。When performing a cold start, turn on the capacity selector valve 8 (
open), and performs a forced combustion routine that increases the amount of fuel gas by increasing the opening degree of the proportional valve 5 over time, until the difference between the WI ring water temperature T and the set temperature T6 is 5 degrees or less ('r h≧T
6-5°C), the switch is made to proportional-integral control (PI open control), which is used as normal combustion control.
一方、循環水温Ｔｈと設定温度Ｔ、との差が４０度未満
（Ｔｂ ＞７．−４０°Ｃ）の場合には、負荷が小さい
と判定し、能力切換弁８をオフ（閉弁）して小能力でバ
ーナ３の燃焼を開始するホットスタートを行い１、時間
経通とともに比例弁５の開度を増大させて燃料ガス量を
増大させる強制燃焼ルーチンに入って、循環水温Ｔ１と
設定温度Ｔ６の差が５度以下（’ｒ ｂ≧Ｔ、−５°Ｃ
）となった時、通常の燃焼制御として用いられている比
例積分制御１ｔ（ＰＩ開制御に切り換えられる。On the other hand, if the difference between the circulating water temperature Th and the set temperature T is less than 40 degrees (Tb > 7.-40 degrees Celsius), it is determined that the load is small, and the capacity switching valve 8 is turned off (closed). A hot start is performed in which the burner 3 starts combustion at a small capacity (1), and as time passes, the opening degree of the proportional valve 5 is increased to increase the amount of fuel gas. The difference in T6 is 5 degrees or less ('r b≧T, -5°C
), the switch is made to proportional-integral control 1t (PI open control) which is used as normal combustion control.
このように、初回着火時に速やかに強制燃焼ルーチンに
入ることにより、立ち上がり特性が向上されるものであ
る。In this way, by quickly entering the forced combustion routine at the time of initial ignition, the start-up characteristics are improved.
循環水温Ｔ１が上昇して、設定温度Ｔ２より所定値α°
Ｃ高い温度である燃焼オフ点Ｔ、（Ｔｃ−Ｔ、＋α”Ｃ
）を超えた（”ｒｈ ＞Ｔ、 ）場合にはバーナ３が消
火される。The circulating water temperature T1 rises to a predetermined value α° from the set temperature T2.
The combustion off point T, which is a high temperature
), the burner 3 is extinguished.
バーナ３が消火された状態で循環水温Ｔ１が下降し、着
火判定温度Ｔ０以下になった時に再びバーナ３を着火す
る再着火の場合には、能力切換弁８をオフ（閉弁）して
小能力とするとともに、比例弁の開度を最小として最小
燃焼モードでノλ−すの燃焼を開始する。In the case of re-ignition, in which the burner 3 is ignited again when the circulating water temperature T1 decreases with the burner 3 extinguished and becomes below the ignition determination temperature T0, the capacity switching valve 8 is turned off (closed). At the same time, the opening degree of the proportional valve is set to the minimum to start combustion of the fuel in the minimum combustion mode.
上記最小燃焼モードでバーナが燃焼している状態で、循
環水温Ｔｈが上記着火判定温度Ｔ、より第２所定温度（
例えば、２°Ｃ）だけ低い第１最小燃焼判定温度Ｔ、、
（Ｔ、、＝Ｔ、−２°Ｃ）未満である（Ｔｈ ＜”ｒ＋
ｅ＋）場合にのみ、循環水温Ｔ、と設定温度Ｔ１の差が
４０度未満（Ｔ、 ＞Ｔ、 −４０°Ｃ）であるか、ま
たは４０度以上（Ｔ１≦Ｔ、 −４０°Ｃ）であるかに
応じてコールドスタートまたはホットスタートの判定を
行い、能力切換弁８をオン（開弁）またはオフ（閉弁）
して大能力燃焼または小能力燃焼を選択し、時間経過と
ともに比例弁５の開度を増大させて燃料ガス量を増大さ
せる強制燃焼ルーチンに入る。When the burner is burning in the minimum combustion mode, the circulating water temperature Th is higher than the ignition determination temperature T, and is higher than the second predetermined temperature (
For example, the first minimum combustion determination temperature T, which is lower by 2°C),
(T, , =T, -2°C) (Th <”r+
e+), the difference between the circulating water temperature T, and the set temperature T1 is less than 40 degrees (T, >T, -40°C) or more than 40 degrees (T1≦T, -40°C). Depending on whether there is a cold start or a hot start, the capacity switching valve 8 is turned on (open) or off (closed).
A forced combustion routine is entered in which high capacity combustion or low capacity combustion is selected, and the opening degree of the proportional valve 5 is increased over time to increase the amount of fuel gas.
循環水温Ｔ１が第１！小燃焼判定温度Ｔ、３以上（Ｔ、
≧Ｔ１）である場合には、負荷が小さいものであるから
、最小燃焼モードでバーナの燃焼を継続する。Circulating water temperature T1 is the first! Small combustion judgment temperature T, 3 or more (T,
≧T1), the load is small, so the burner continues combustion in the minimum combustion mode.
この制御方法によると、循環水温Ｔ、が第１！小燃焼判
定温度Ｔ ＩＩ １以上になっている時二よ、暖房負荷
が小さい状態であるから、最小燃焼モードでバーナ３の
燃焼をｍ続させることにより、循環水温Ｔ７の上昇が抑
制され、直ちにバーナ３が消火されることはなく、点火
・消火のハンチングを生しることがなく、安定した循環
水温Ｔｈを得ることができるものである。According to this control method, the circulating water temperature T is the first! When the small combustion judgment temperature T II is 1 or more, the heating load is small, so by continuing combustion of the burner 3 in the minimum combustion mode, the rise in the circulating water temperature T7 is suppressed, and the temperature is immediately increased. The burner 3 is never extinguished, no hunting occurs during ignition and extinguishing, and a stable circulating water temperature Th can be obtained.
次二二、第２実施例について第３図を参照して説明する
と、初回着火時には、前述の第１実施例と同様に、速や
かに強制燃焼ルーチンに入ること乙二より、立ち上がり
特性が向上される。Next, the second embodiment will be explained with reference to FIG. 3. At the time of initial ignition, as in the first embodiment described above, the start-up characteristics are improved by quickly entering the forced combustion routine. Ru.
循環水温Ｔｈが上昇して、−旦燃焼オフ点Ｔ１を超えて
（Ｔｂ ＞’ｒｃ） 、バーナ３が消火され、その後循
環水温Ｔわが下降し、着火判定温度Ｔ。The circulating water temperature Th rises and exceeds the combustion off point T1 (Tb>'rc), the burner 3 is extinguished, and then the circulating water temperature T decreases to the ignition determination temperature T.
以下になった時に再びバーナ３を着火する再着火の場合
には、能力切換弁８をオフ（閉弁）して小能力とすると
ともに、比例弁の開度を最小として最小燃焼モードでバ
ーナの燃焼を開始する。In the case of re-ignition, in which the burner 3 is ignited again when the temperature is below, the capacity switching valve 8 is turned off (closed) to reduce the capacity, and the opening degree of the proportional valve is set to the minimum to set the burner to the minimum combustion mode. Start combustion.
バーナの燃焼が最小燃焼モードで所定時間（例えば、２
分間）経過する前に、循環水温Ｔ、が上記着火判定温度
Ｔ。より第２所定温度（例えば、２°Ｃ）だけ低い第１
最小燃焼判定温度Ｔ、、（Ｔ１＝Ｔ、−２°Ｃ）未満と
なる（Ｔあ＜ Ｔ ｅ ｌ ）場合にのみ、循環水温Ｔ
ゎと設定温度Ｔ１の差が４０度未満（’ｒ、 ＞Ｔ、−
４０°Ｃ）であるか、または４０度以上（Ｔあ≦Ｔ、−
４０°Ｃ）であるかに応じてコールドスタートまたはホ
ットスタートの判定を行い、能力切換弁８をオン（開弁
）またはオフ（閉弁）して大能力燃焼または小能力燃焼
を選択し、時間経通とともに比例弁５の開度を増大させ
て燃料ガス量を増大させる強制燃焼ルーチンに入る。Burner combustion is in the minimum combustion mode for a predetermined period of time (for example, 2
minutes), the circulating water temperature T reaches the above-mentioned ignition judgment temperature T. The first temperature is lower by a second predetermined temperature (for example, 2°C) than the first temperature.
Only when the minimum combustion determination temperature T is less than (T1=T, -2°C) (T<T e l ), the circulating water temperature T
The difference between ゎ and set temperature T1 is less than 40 degrees ('r, >T, -
40°C) or 40° or more (Ta≦T, -
A cold start or a hot start is determined depending on whether the temperature is 40°C), the capacity switching valve 8 is turned on (open) or off (closed), large capacity combustion or small capacity combustion is selected, and the time is determined. A forced combustion routine is entered in which the opening degree of the proportional valve 5 is increased to increase the amount of fuel gas.
循環水温Ｔｈが第１最小燃焼判定温度Ｔ□以上（Ｔ、≧
Ｔ−＋）である場合には、負荷が小さいものであるから
、最小燃焼モードでバーナの燃焼を継続する。The circulating water temperature Th is equal to or higher than the first minimum combustion determination temperature T□ (T, ≧
T-+), the load is small, so the burner continues combustion in the minimum combustion mode.
バーナの燃焼が最小燃焼モーＦ′で所定時間（例えば、
２分間）経過した後に、循環水温Ｔｂが上記着火判定温
度Ｔ０より第３所定温度（例えば、２°Ｃ）だけ高い第
２最小燃焼判定温度Ｔ−ｚ（Ｔ−ｚ−’ｒ０＋２℃）未
満の場合にのみ、循環水温Ｔ。The burner burns at the minimum combustion mode F' for a predetermined period of time (for example,
2 minutes), the circulating water temperature Tb is lower than the second minimum combustion judgment temperature Tz (Tz-'r0+2°C) which is higher than the ignition judgment temperature T0 by a third predetermined temperature (for example, 2°C). Only if the circulating water temperature T.
と設定温度Ｔ１の差に応じてコールドスタートまたはホ
ントスタートの判定を行い、大能力燃焼ｔたは小能力燃
焼を選択巳、時間経過とともに比例弁５の開度を増大さ
せて燃料ガス量を増大させる強制燃焼ルーチンに入る。A cold start or a real start is determined according to the difference between the temperature T1 and the set temperature T1, and a large capacity combustion or a small capacity combustion is selected.As time passes, the opening degree of the proportional valve 5 is increased to increase the amount of fuel gas. Enters a forced combustion routine.
循環水温Ｔ、が第２最小燃焼判定温度Ｔ１以上（Ｔ、≧
Ｔ１）の場合には、負荷が小さいものであるから、最小
燃焼モードでバーナの燃焼を継続させる。Circulating water temperature T, is equal to or higher than second minimum combustion determination temperature T1 (T, ≧
In the case of T1), since the load is small, the burner continues combustion in the minimum combustion mode.
この構成により、暖房負荷が最小燃焼モードでのバーナ
の燃焼とバランスする大きさである場合に、所定時間（
２分間）経過前と経過後で、強制燃焼ルーチンに移行す
る条件である第１最小燃焼判定温度Ｔ１を第２最小燃焼
判定温度Ｔ、！（Ｔ、。This configuration allows for a predetermined period of time (
2 minutes) before and after the elapse of time, the first minimum combustion determination temperature T1, which is the condition for transitioning to the forced combustion routine, is changed to the second minimum combustion determination temperature T,! (T.
＜ Ｔ ＠ ！ ）に変更することにより、両最小燃焼
判定温度の差（ここでは、Ｔ−ｚ Ｔ１＝４℃）だけ
循環水温Ｔ６が高い場合にのみ強制燃焼ルーチンに移行
するものであるから、設定温度Ｔ、Ｌ二近い温度に安定
させることができる。<T @! ), the set temperature T, It can be stabilized at a temperature close to L2.
なお、上記第１及び第２実施例においては、再着火の時
のみ循環水温Ｔ、と第１１小燃焼判定温度Ｔ□との比較
、及び循環水温Ｔ６と第１最小燃焼判定温度Ｔ□或いは
第２最小燃焼判定温度Ｔ、２との比較を行っているが、
初回着火の際にも同様の比較操作を行って良いものであ
る。In the first and second embodiments described above, only at the time of re-ignition, the circulating water temperature T and the eleventh small combustion determination temperature T□ are compared, and the circulating water temperature T6 and the first minimum combustion determination temperature T□ or the first minimum combustion determination temperature T□ 2. A comparison is made with the minimum combustion determination temperature T, 2.
A similar comparison operation may be performed when igniting for the first time.
本発明は上述のとおり構成されているから、以下°に述
べるとおりの効果を奏する。Since the present invention is configured as described above, it produces the effects as described below.
循環水温が第１最小燃焼判定温度以上になっている時は
、暖房負荷が小さい状態であるから、最小ｔｌ！焼モー
ドでバーナの燃焼を継続させることにより、循環水温の
上昇が抑制され、直ちにバーナが消火されることはなく
、点火・消火のハンチングを住じることがなく、安定し
た循環水温を得ることができるものである。When the circulating water temperature is equal to or higher than the first minimum combustion determination temperature, the heating load is small, so the minimum tl! By allowing the burner to continue burning in the burning mode, the rise in circulating water temperature is suppressed, the burner is not extinguished immediately, and there is no hunting between ignition and extinguishing, and a stable circulating water temperature can be obtained. It is something that can be done.
また、暖房負荷が最小燃焼モードでのバーナの燃焼とバ
ランスする大きさである場合に、所定時間経過前と経通
後で、強制燃焼ルーチンに移行する条件である第１最小
燃焼判定温度を第２最小燃焼判定温度に変更することＬ
二より、両最小燃焼判定温度の差だけ循環水温が高い場
合にのみ強制燃焼ルーチンに移行するものであるから、
設定温度に近い温度に安定させることができる。In addition, when the heating load is of a size that balances the combustion of the burner in the minimum combustion mode, the first minimum combustion judgment temperature, which is the condition for transitioning to the forced combustion routine, is set to 2 Change to the minimum combustion judgment temperature L
From the second point, the forced combustion routine is entered only when the circulating water temperature is higher than the difference between the two minimum combustion determination temperatures.
The temperature can be stabilized close to the set temperature.
第１図は本発明を適用する暖房用加熱器の概略構成図、
第２図は第１実施例の制御方法のフローチャート、第３
図は第２実施例の制御方法のフローチャート、第４図は
従来の制御方法のフローチャートである。
１・・・加熱器、２・・・熱交換器、
３・・・バーナ、５・・・比例弁、
８・・・能力切換弁、】６・・・温度センサ、２１・・
・入水管、２２・・・出湯管。FIG. 1 is a schematic configuration diagram of a heating device to which the present invention is applied;
FIG. 2 is a flowchart of the control method of the first embodiment;
The figure is a flowchart of the control method of the second embodiment, and FIG. 4 is a flowchart of the conventional control method. DESCRIPTION OF SYMBOLS 1... Heater, 2... Heat exchanger, 3... Burner, 5... Proportional valve, 8... Capacity switching valve, ] 6... Temperature sensor, 21...
・Water inlet pipe, 22... Hot water outlet pipe.
Claims (2)
切り換える能力切換弁と燃料量を制御する比例弁が設け
られた加熱器と、放熱器と、加熱器と放熱器とを結合す
る循環管とを有する温水暖房装置において、加熱器のバ
ーナ着火時に、能力切換弁をオフ（閉弁）して小能力と
するとともに、比例弁の開度を最小として最小燃焼モー
ドでバーナの燃焼を開始し、循環水温が上記着火判定温
度より第２所定温度だけ低い第１最小燃焼判定温度未満
の場合にのみ、循環水温と設定温度の差に応じて大能力
燃焼または小能力燃焼を選択し、時間経過とともに比例
弁の開度を増大させて燃料ガス量を増大させる強制燃焼
ルーチンに入ることを特徴とする暖房制御方法。(1) A heater that has a heat exchanger and a burner and is equipped with a capacity switching valve that switches the combustion capacity of the burner and a proportional valve that controls the amount of fuel, a radiator, and a combination of the heater and the radiator. In a hot water heating system having a circulation pipe, when the burner of the heater is ignited, the capacity switching valve is turned off (closed) to reduce the capacity, and the opening of the proportional valve is set to the minimum to burn the burner in the minimum combustion mode. is started, and only when the circulating water temperature is less than the first minimum combustion judgment temperature, which is lower than the ignition judgment temperature by a second predetermined temperature, large capacity combustion or small capacity combustion is selected according to the difference between the circulating water temperature and the set temperature. A heating control method characterized by entering a forced combustion routine in which the opening of a proportional valve is increased over time to increase the amount of fuel gas.
切り換える能力切換弁と燃料量を制御する比例弁が設け
られた加熱器と、放熱器と、加熱器と放熱器とを結合す
る循環管とを有する温水暖房装置において、加熱器のバ
ーナ着火時に、能力切換弁をオフ（閉弁）して小能力と
するとともに、比例弁の開度を最小として最小燃焼モー
ドでバーナの燃焼を開始し、所定時間経過前には、循環
水温が第１最小燃焼判定温度未満の場合にのみ、循環水
温と設定温度の差に応じて大能力燃焼または小能力燃焼
を選択し、強制燃焼ルーチンに入る一方、所定時間経過
後には、循環水温が上記着火判定温度より第３所定温度
だけ高い第２最小燃焼判定温度未満の場合にのみ、循環
水温と設定温度の差に応じて大能力燃焼または小能力燃
焼を選択し、強制燃焼ルーチンに入ることを特徴とする
暖房制御方法。(2) A heater that has a heat exchanger and a burner and is equipped with a capacity switching valve that switches the combustion capacity of the burner and a proportional valve that controls the amount of fuel, a radiator, and a heater and radiator that are combined. In a hot water heating system having a circulation pipe, when the burner of the heater is ignited, the capacity switching valve is turned off (closed) to reduce the capacity, and the opening of the proportional valve is set to the minimum to burn the burner in the minimum combustion mode. is started, and before a predetermined time elapses, only when the circulating water temperature is less than the first minimum combustion determination temperature, large capacity combustion or small capacity combustion is selected according to the difference between the circulating water temperature and the set temperature, and the forced combustion routine is started. On the other hand, after a predetermined period of time has elapsed, high-capacity combustion or A heating control method characterized by selecting small capacity combustion and entering a forced combustion routine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332040A JPH0713547B2 (en) | 1990-11-29 | 1990-11-29 | Heating control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332040A JPH0713547B2 (en) | 1990-11-29 | 1990-11-29 | Heating control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04198661A true JPH04198661A (en) | 1992-07-20 |
| JPH0713547B2 JPH0713547B2 (en) | 1995-02-15 |
Family
ID=18250471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332040A Expired - Fee Related JPH0713547B2 (en) | 1990-11-29 | 1990-11-29 | Heating control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713547B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1248044A2 (en) * | 2001-03-26 | 2002-10-09 | Vaillant GmbH | Method for starting a heater |
-
1990
- 1990-11-29 JP JP2332040A patent/JPH0713547B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1248044A2 (en) * | 2001-03-26 | 2002-10-09 | Vaillant GmbH | Method for starting a heater |
| EP1248044A3 (en) * | 2001-03-26 | 2005-02-02 | Vaillant GmbH | Method for starting a heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0713547B2 (en) | 1995-02-15 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |