JPH05164401A - Combustion controller of hot water boiler - Google Patents
Combustion controller of hot water boilerInfo
- Publication number
- JPH05164401A JPH05164401A JP35472391A JP35472391A JPH05164401A JP H05164401 A JPH05164401 A JP H05164401A JP 35472391 A JP35472391 A JP 35472391A JP 35472391 A JP35472391 A JP 35472391A JP H05164401 A JPH05164401 A JP H05164401A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- temperature sensor
- hot water
- burner
- detected
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、温水ボイラの燃焼制
御装置の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a combustion control device for a hot water boiler.
【０００２】[0002]
【従来の技術】従来、貯湯式の温水ボイラにおいては、
缶体内上段部の温水温度を検出し、この検出温度に基づ
いてバーナをＯＮ−ＯＦＦ制御するようにしている。例
えば、温水温度が６５℃に達したらバーナを停止させ、
温水温度が６０℃に低下したらバーナを稼動させるよう
に制御する。従って、バーナが停止したときには、缶体
内の撹拌作用が少なくなり、缶体内では、その上段部に
高温の温水が、下段部に低温の温水が分かれて溜まり、
負荷からの要求があったときに、缶体上部より高温の温
水を供給するようにしている。2. Description of the Related Art Conventionally, in hot water storage type hot water boilers,
The hot water temperature in the upper part of the can is detected, and the burner is ON / OFF controlled based on the detected temperature. For example, when the hot water temperature reaches 65 ° C, stop the burner,
When the hot water temperature drops to 60 ° C., the burner is controlled to operate. Therefore, when the burner is stopped, the stirring action inside the can is reduced, and in the can, high-temperature hot water is collected in the upper part and low-temperature hot water is collected in the lower part.
When there is a demand from the load, hot water of higher temperature is supplied from above the can body.
【０００３】このような構成の温水ボイラにおいて、バ
ーナ停止中に次のバーナ稼動指示信号が発せられるに
は、負荷への給湯によって下部の低温の温水層が上昇
し、缶体内上部の温水温度が低下しなければならない。
そうすると、その缶体内上部の温水温度の低下を温度セ
ンサで検出して、バーナへ稼動指示信号を出力する。In the hot water boiler having such a structure, when the next burner operation instruction signal is issued while the burner is stopped, the low-temperature hot water layer in the lower part is raised by supplying hot water to the load, and the hot water temperature in the upper part of the can is raised. Must drop.
Then, the temperature sensor detects the decrease in the temperature of the hot water in the upper part of the can and outputs an operation instruction signal to the burner.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述の
燃焼制御方法では、負荷への給湯量が急増したときに、
対応しきれない場合がある。低温の温水層の上昇を待っ
てバーナ稼動指示信号を出力したのでは、応答遅れが生
じ、又、燃焼開始時には約１５秒程度のプレパージを必
要とするため、その分さらに応答が遅れることになる。
そうなると、低温の水が負荷側へ流れてしまい、高温の
温水を安定して供給することができなくなる。However, in the above combustion control method, when the amount of hot water supplied to the load suddenly increases,
It may not be possible to respond. If the burner operation instruction signal is output after waiting for the rise of the low-temperature hot water layer, a response delay will occur, and since pre-purge of about 15 seconds is required at the start of combustion, the response will be further delayed by that amount. ..
If this happens, low-temperature water will flow to the load side, making it impossible to stably supply high-temperature hot water.
【０００５】[0005]
【課題を解決するための手段】この発明は、上述の課題
に鑑みて為されたもので、高温の温水を安定して供給す
ることを目的とし、具体的には、温水ボイラに、缶内の
温水温度を検出する第１温度センサ及び第２温度センサ
を設け、これらの温度センサのうち第１温度センサを第
２温度センサより上方位置に配置し、第１温度センサの
検出温度が設定温度ｔ1 以下、及び第２温度センサの検
出温度が設定温度ｔ2 以下のうち、少なくともどちらか
一方の条件を満たすとき、バーナへ稼動指示信号を出力
し、第１温度センサの検出温度が設定温度ｔ3 以上にな
ったとき、バーナへ停止指示信号を出力する制御装置を
備えたことを特徴としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to stably supply hot water of high temperature. A first temperature sensor and a second temperature sensor for detecting the hot water temperature of the first temperature sensor are provided above the second temperature sensor, and the detected temperature of the first temperature sensor is the set temperature. When t 1 or less and the detected temperature of the second temperature sensor satisfies at least one of the set temperature t 2 or less, an operation instruction signal is output to the burner and the detected temperature of the first temperature sensor is set to the set temperature. It is characterized in that a control device is provided for outputting a stop instruction signal to the burner when t 3 or more.
【０００６】[0006]
【作用】上述の構成によれば、通常の給湯量の場合に
は、第１温度センサの検出温度が設定温度ｔ1 以下にな
ったときバーナへ稼動指示信号を出力し、第１温度セン
サの検出温度が設定温度ｔ3 以上になったときバーナへ
停止指示信号を出力するようにして、バーナのＯＮ−Ｏ
ＦＦを制御し、給湯量が急増した場合には、缶内の温度
降下が急であるため、第１温度センサの検出温度が設定
温度ｔ1 以下になるよりも早く、第１温度センサより下
方に配置した第２温度センサの検出温度が、設定温度ｔ
2 以下になり、この第２温度センサの検出信号を受け
て、バーナへ稼動指示信号を出力する。そうすることに
より、従来のものより格段に早く、負荷の要求に応答す
ることができる。According to the above-described structure, in the case of the normal hot water supply amount, when the detected temperature of the first temperature sensor becomes equal to or lower than the set temperature t 1 , the operation instruction signal is output to the burner, and the first temperature sensor operates. When the detected temperature exceeds the set temperature t 3 , a stop instruction signal is output to the burner to turn the burner ON-O.
When the FF is controlled and the amount of hot water supply suddenly increases, the temperature drop in the can is rapid, so that the temperature detected by the first temperature sensor is lower than the set temperature t 1 and lower than the first temperature sensor. The temperature detected by the second temperature sensor arranged in
When it becomes 2 or less, the operation instruction signal is output to the burner in response to the detection signal of the second temperature sensor. By doing so, it is possible to respond to the load request much faster than the conventional one.
【０００７】[0007]
【実施例】以下、この発明の好ましい実施例を図面に基
づいて説明する。図１において、(6) は貯湯式温水ボイ
ラの缶体で、内胴(6A)と外胴(6B)との間に貯湯部を形成
し、缶体の下部に設けた給水口(7) に給水シスターンタ
ンク(8) を接続している。(4) は送風機(9) を備えたバ
ーナで、このバーナにより内胴(6A)を加熱し缶体内の水
を温水にするようにしている。(10)はカラン等の負荷
で、缶体(6) 内に貯えている温水を、温水出口(11)に接
続した給湯管(12)を通して供給する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, (6) is a can body of a hot water storage type hot water boiler, in which a hot water storage part is formed between an inner body (6A) and an outer body (6B), and a water supply port (7) provided at the bottom of the body The water supply tank (8) is connected to. (4) is a burner equipped with a blower (9), which heats the inner case (6A) to heat the water in the can. (10) is a load such as a curran, and supplies the hot water stored in the can body (6) through a hot water supply pipe (12) connected to the hot water outlet (11).
【０００８】(2) は缶体内の上段部に設けた第１温度セ
ンサ、(3)は缶体内の中段部に設けた第２温度センサ
で、それぞれ缶体内の温水温度を検出する。(5) は制御
装置で、上記温水ボイラの運転を予め設定したプログラ
ムに従って制御する。燃焼制御に関しては、前記第１温
度センサ(2) 及び第２温度センサ(3) からの検出信号に
基づいて制御し、第１温度センサ(2) の検出温度が設定
温度ｔ1 以下、及び第２温度センサ(3) の検出温度が設
定温度ｔ2 以下のうち、少なくともどちらか一方の条件
を満たすとき、バーナ(4) へ稼動指示信号を出力し、第
１温度センサ(2)の検出温度が設定温度ｔ3 以上になっ
たとき、バーナ(4) へ停止指示信号を出力するようにす
る。(2) is a first temperature sensor provided in the upper part of the can body, and (3) is a second temperature sensor provided in the middle part of the can body, which respectively detect the hot water temperature in the can body. (5) is a control device that controls the operation of the hot water boiler according to a preset program. The combustion control is controlled based on the detection signals from the first temperature sensor (2) and the second temperature sensor (3), and the temperature detected by the first temperature sensor (2) is less than or equal to the set temperature t 1 , 2 When the temperature detected by the temperature sensor (3) satisfies at least one of the set temperatures t 2 or less, an operation instruction signal is output to the burner (4) to detect the temperature detected by the first temperature sensor (2). When the temperature exceeds the set temperature t 3 , a stop instruction signal is output to the burner (4).
【０００９】図３は制御回路の一例で、(13)はマイクロ
コンピュータより成る制御部で、運転操作スイッチ(1
4)、第１温度センサ(2) 、第２温度センサ(3) からの信
号を受けて、内部メモリ又は外部メモリに予め記憶され
た制御手順に従い、バーナ(4)及び送風機(9) を制御す
る。この制御手順の要部は、図２に示す。FIG. 3 shows an example of a control circuit. Reference numeral (13) is a control section composed of a microcomputer, which includes a driving operation switch (1
4), receiving signals from the first temperature sensor (2) and the second temperature sensor (3), and controlling the burner (4) and the blower (9) according to the control procedure stored in the internal memory or the external memory in advance. To do. The main part of this control procedure is shown in FIG.
【００１０】以下、図２に従い、実施例の動作を説明す
る。ステップＳ１で第１温度センサ(2) の検出温度が設
定温度ｔ1 以下かどうかを判定する。ＹＥＳの場合、Ｓ
２へ移行し、まず送風機(9) をＯＮにして所定の時間プ
レパージを行った後、バーナ(4) をＯＮにして燃焼を開
始する。Ｓ１でＮＯと判定すると、Ｓ３へ移行する。こ
こで、第２温度センサ(3) の検出温度が設定温度ｔ2 以
下かどうかを判定する（例えばｔ1 が６０℃であればｔ
2 は５０℃に設定）。ＮＯの場合、Ｓ４へ移行して、バ
ーナ(4) 及び送風機(9) をＯＦＦにする。ＹＥＳの場合
は、Ｓ２へ移行して燃焼を開始する。前述の、バーナ
(4) へ停止指示信号を出力するための第１温度センサ
(2) における設定温度ｔ3 は、例えば上記設定温度ｔ1
が６０℃であれば６５℃に設定する。両者の差５℃は、
いわゆるディファレンシャルに相当する分である。The operation of the embodiment will be described below with reference to FIG. In step S1, it is determined whether the temperature detected by the first temperature sensor (2) is below the set temperature t 1 . If YES, S
Then, the blower (9) is turned on to perform pre-purge for a predetermined time, and then the burner (4) is turned on to start combustion. If NO is determined in S1, the process proceeds to S3. Here, it is determined whether or not the temperature detected by the second temperature sensor (3) is less than or equal to the set temperature t 2 (for example, if t 1 is 60 ° C., t
2 is set to 50 ° C). If NO, the process proceeds to S4, and the burner (4) and blower (9) are turned off. In the case of YES, the process proceeds to S2 and combustion is started. The burner mentioned above
(4) First temperature sensor for outputting stop instruction signal to
The set temperature t 3 in (2) is, for example, the set temperature t 1 described above.
If is 60 ° C, set to 65 ° C. The difference of 5 ° C between the two
This is equivalent to what is called a differential.
【００１１】バーナ(4) が停止している状態、即ち燃焼
待機時には、缶体(6) 内の上段部に高温の温水が、中段
部以下に低温の温水が滞留している状態になるが、上述
の制御によれば、第２温度センサ(3) で中段部の温水温
度を検出してバーナ(4) をＯＮにすることができるた
め、上段部のみならず、中段部の温水も常に所定の温度
以上に維持することができ、いつでも負荷への給湯が可
能な状態が維持される。又、負荷側で給湯が開始され、
冷水が缶体内に流入し始めると、その冷水流入の影響に
よる温度低下を第２温度センサ(3) でいち早くキャッチ
し、燃焼を開始するため、缶体からの低温の温水の流出
を極力少なくすることができる。従って、負荷に対して
常に高温の温水を供給することができる。When the burner (4) is stopped, that is, during combustion standby, high-temperature hot water stays in the upper part of the can body (6) and low-temperature hot water stays in the middle part and below. According to the control described above, since the burner (4) can be turned on by detecting the hot water temperature of the middle section with the second temperature sensor (3), the hot water of the middle section as well as the upper section is always The temperature can be maintained at a predetermined temperature or higher, and the state where hot water can be supplied to the load is maintained at any time. Also, hot water supply is started on the load side,
When cold water begins to flow into the can, the second temperature sensor (3) quickly catches the temperature drop due to the effect of cold water inflow, and starts combustion, so that the flow of cold water from the can is minimized. be able to. Therefore, high-temperature hot water can always be supplied to the load.
【００１２】尚、この発明は、上述の実施例に限定され
るものではなく、貫流型温水ボイラ、即ち図４に示すよ
うに、上部ヘッダ(15)及び下部ヘッダ(16)間に多数の垂
直水管(17)を接続して缶体(6) を形成し、熱交換器(18)
を前記上部ヘッダ(15)及び下部ヘッダ(16)に連通接続し
た構成のものにも適用することができる。(19)は循環ポ
ンプで、ボイラ運転中はバーナのＯＮ−ＯＦＦに関係な
く連続的に駆動される。The present invention is not limited to the above-described embodiment, but a through-flow type hot water boiler, that is, as shown in FIG. 4, a large number of vertical headers are provided between the upper header (15) and the lower header (16). The water pipe (17) is connected to form the can body (6), and the heat exchanger (18)
Can also be applied to a structure in which the above is connected to the upper header (15) and the lower header (16). (19) is a circulation pump that is continuously driven during boiler operation regardless of whether the burner is on or off.
【００１３】又、図１及び図４に示す実施例において、
第２温度センサ(3)の取り付け位置は、缶体(6) の下段
部に設定することもできる。In the embodiment shown in FIGS. 1 and 4,
The mounting position of the second temperature sensor (3) can be set in the lower part of the can body (6).
【００１４】[0014]
【発明の効果】この発明は、以上のような構成であるの
で、給湯量が急増した場合でも、第１温度センサより下
方位置に配置した第２温度センサの検出温度に基づい
て、早期にバーナへ稼動指示信号を出力することがで
き、従来のものより格段に早く、負荷の給湯要求に応答
することができる。従って、低温の温水が負荷に対して
供給されるのを防止して、常時、高温の温水を安定して
供給することができる。又、バーナへの停止指示信号の
出力は、上方位置に配置した第１温度センサの検出温度
に基づいて行うので、缶体上部の異常過熱を防止するこ
とができる。EFFECTS OF THE INVENTION Since the present invention has the above-described structure, even if the amount of hot water supply increases suddenly, the burner can be early operated based on the temperature detected by the second temperature sensor located below the first temperature sensor. The operation instruction signal can be output to, and the load hot water supply request can be responded to much faster than the conventional one. Therefore, low-temperature hot water can be prevented from being supplied to the load, and high-temperature hot water can always be stably supplied. Further, since the stop instruction signal is output to the burner based on the temperature detected by the first temperature sensor arranged at the upper position, abnormal overheating of the upper portion of the can body can be prevented.
【図１】この発明における一実施例を示す系統図であ
る。FIG. 1 is a system diagram showing an embodiment of the present invention.
【図２】この発明の一実施例における制御の主要動作を
を示すフロー図である。FIG. 2 is a flowchart showing a main operation of control in one embodiment of the present invention.
【図３】この発明の一実施例における制御回路の概略を
示すブロック図である。FIG. 3 is a block diagram showing an outline of a control circuit in one embodiment of the present invention.
【図４】この発明における別の実施例を示す系統図であ
る。FIG. 4 is a system diagram showing another embodiment of the present invention.
１ 温水ボイラ ２ 第１温度センサ ３ 第２温度センサ ４ バーナ ５ 制御装置 1 Hot Water Boiler 2 First Temperature Sensor 3 Second Temperature Sensor 4 Burner 5 Controller
Claims (1)
出する第１温度センサ(2) 及び第２温度センサ(3) を設
け、これらの温度センサのうち第１温度センサ(2) を第
２温度センサ(3) より上方位置に配置し、第１温度セン
サ(2) の検出温度が設定温度ｔ1 以下、及び第２温度セ
ンサ(3) の検出温度が設定温度ｔ2 以下のうち、少なく
ともどちらか一方の条件を満たすとき、バーナ(4) へ稼
動指示信号を出力し、第１温度センサ(2) の検出温度が
設定温度ｔ3 以上になったとき、バーナ(4) へ停止指示
信号を出力する制御装置(5) を備えたことを特徴とする
温水ボイラの燃焼制御装置。1. A hot water boiler (1) is provided with a first temperature sensor (2) and a second temperature sensor (3) for detecting the temperature of hot water in a can. Of these temperature sensors, a first temperature sensor (2) is provided. ) Is arranged above the second temperature sensor (3), and the detected temperature of the first temperature sensor (2) is less than the set temperature t 1 and the detected temperature of the second temperature sensor (3) is less than the set temperature t 2 of, when at least one of the conditions are satisfied, when outputting the operation instruction signal to the burner (4), the temperature detected by the first temperature sensor (2) reaches the set temperature t 3 or more, burner (4) A combustion control device for a hot water boiler, comprising a control device (5) that outputs a stop instruction signal to the hot water boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35472391A JPH05164401A (en) | 1991-12-18 | 1991-12-18 | Combustion controller of hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35472391A JPH05164401A (en) | 1991-12-18 | 1991-12-18 | Combustion controller of hot water boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05164401A true JPH05164401A (en) | 1993-06-29 |
Family
ID=18439472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35472391A Pending JPH05164401A (en) | 1991-12-18 | 1991-12-18 | Combustion controller of hot water boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05164401A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003106671A (en) * | 2001-09-28 | 2003-04-09 | Noritz Corp | Hot water storage type hot water supply device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57122220A (en) * | 1981-01-21 | 1982-07-30 | Hitachi Ltd | Temperature controlling device for water boiler |
-
1991
- 1991-12-18 JP JP35472391A patent/JPH05164401A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57122220A (en) * | 1981-01-21 | 1982-07-30 | Hitachi Ltd | Temperature controlling device for water boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003106671A (en) * | 2001-09-28 | 2003-04-09 | Noritz Corp | Hot water storage type hot water supply device |
| JP4730578B2 (en) * | 2001-09-28 | 2011-07-20 | 株式会社ノーリツ | Hot water storage water heater |
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