JPS622456Y2 - - Google Patents
Info
- Publication number
- JPS622456Y2 JPS622456Y2 JP8364183U JP8364183U JPS622456Y2 JP S622456 Y2 JPS622456 Y2 JP S622456Y2 JP 8364183 U JP8364183 U JP 8364183U JP 8364183 U JP8364183 U JP 8364183U JP S622456 Y2 JPS622456 Y2 JP S622456Y2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- temperature
- water temperature
- combustion
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 238000013021 overheating Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Control Of Combustion (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Description
【考案の詳細な説明】 本考案は温水暖房装置に関するものである。[Detailed explanation of the idea] The present invention relates to a hot water heating device.
従来、暖房負荷の変動に応じて燃焼量を増減
し、循環温水を一定温度に保つ比例制御を採用し
た温水暖房装置があり、その構成を第１図で説明
する。温水循環路１は缶体２、複数の放熱器３お
よびこれらの間に温水を循環させるポンプ４等か
ら構成され、缶体２を加熱するバーナ５へのガス
供給路６中には、缶体２の出口に設けたサーミス
タからなる湯温検出器７の検出温度と予め設定さ
れた設定温度との差を比較増巾して、検出温度が
設定温度に一致するようバーナ５の加熱量を制御
するガス比例弁８が設けてある。また該ガス供給
路６中には、暖房負荷が極端に小さくなり、ガス
比例弁８の制御可能範囲を越えて湯温が上昇した
場合に、これを湯温検出器７で検出しバーナ５の
燃焼を停止させるオンオフ弁９が備わつている。 BACKGROUND ART Conventionally, there is a hot water heating apparatus that employs proportional control that increases or decreases the amount of combustion in accordance with fluctuations in heating load and maintains circulating hot water at a constant temperature, and the configuration thereof will be explained with reference to FIG. The hot water circulation path 1 is composed of a can body 2, a plurality of radiators 3, a pump 4 that circulates hot water between them, etc., and a gas supply path 6 to a burner 5 that heats the can body 2 includes Comparing and amplifying the difference between the temperature detected by the hot water temperature detector 7 consisting of a thermistor installed at the outlet of 2 and a preset temperature, the heating amount of the burner 5 is controlled so that the detected temperature matches the set temperature. A gas proportional valve 8 is provided. In addition, in the gas supply path 6, when the heating load becomes extremely small and the hot water temperature rises beyond the controllable range of the gas proportional valve 8, this is detected by the hot water temperature detector 7 and the burner 5 is activated. An on/off valve 9 is provided to stop combustion.
ところが暖房開始時には、暖房用温水が早く設
定温に達して、安定した温度での暖房がいち早く
行える立ち上がりの速いことが望ましく、このた
め燃焼開始当初は比例弁８を大きく開いて略全開
燃焼させるが、このようにすると暖房負荷が小さ
い場合、第２図に示すように、湯温上昇によつて
比例弁８がガス量を絞り初めるが、その効果が現
われる前に缶体２の加熱が一気に進み、破線で示
す湯温上昇カーブはオーバーシユートにより湯温
検出器７のオフ温度を越えてしまい、オンオフ弁
９が動作して燃焼を停止し、湯温が低下して検出
器７の下限オン温度を下まわつた時点で再び着火
し、これがある程度減衰しながら繰り返されるハ
ンチング現象が生じ、設定温度に安定するまでに
時間が非常に長くかかり、結果として立ち上がり
が悪くなる難点がある。 However, at the start of heating, it is desirable for the hot water for heating to quickly reach the set temperature and to quickly start heating at a stable temperature.For this reason, at the beginning of combustion, the proportional valve 8 is opened wide to perform almost full combustion. In this way, when the heating load is small, as shown in Figure 2, the proportional valve 8 begins to throttle the gas amount as the water temperature rises, but the heating of the can body 2 rapidly progresses before the effect appears. , the hot water temperature rise curve shown by the broken line exceeds the off temperature of the hot water temperature detector 7 due to overshoot, the on/off valve 9 operates to stop combustion, the hot water temperature decreases, and the lower limit of the hot water temperature detector 7 is turned on. A hunting phenomenon occurs in which the ignition occurs again when the temperature drops below it, and this repeats while attenuating to some extent, and it takes a very long time to stabilize at the set temperature, resulting in a slow start-up.
またポンプ４がごみ噛み等で万一ロツクした場
合、缶体温度は急激に上昇するが、湯温検出器７
の取り付け位置によつてはハイリミツトスイツチ
等の過熱安全器１０が働く前に、上記同様に湯温
検出器７による燃焼のオンオフが繰り返されてし
まい、器具の動作を全面的に停止する安全動作に
至らない事態が生じるおそれがある。 In addition, if the pump 4 were to lock due to foreign matter, etc., the temperature of the can body would rise rapidly, but the water temperature detector 7
Depending on the mounting position of the device, the hot water temperature detector 7 may repeatedly turn on and off the combustion before the overheating safety device 10 such as a high limit switch is activated, resulting in a safety operation that completely stops the operation of the device. There is a risk that a situation that does not lead to this may occur.
そこで本考案はこれらの問題を解消せんとする
もので、湯温検出器７による燃焼の停止は、湯温
の上記オフ温度通過と比例弁８の開度が最小であ
ることの二つの条件が同時に満足されて初めて行
われるようにしたことを特徴とする。 Therefore, the present invention aims to solve these problems, and the stopping of combustion by the hot water temperature detector 7 is based on two conditions: the hot water temperature passes the above-mentioned off temperature, and the opening degree of the proportional valve 8 is minimum. It is characterized in that the process is performed only when the user is satisfied at the same time.
すなわち、これによれば第２図において実線で
示すように、湯温変動カーブはオーバーシユート
で湯温検出器７のオフ温度を越えるが、この時比
例弁８は最小開度に絞られてはいないため、従来
のようにここで燃焼を停止してしまうことはな
く、続けて比例弁８を絞つて行く温度コントロー
ル動作に入り、上記従来の場合と比べてより早く
設定温度に落ち着くものである。 That is, according to this, as shown by the solid line in FIG. 2, the hot water temperature fluctuation curve overshoots and exceeds the off temperature of the hot water temperature detector 7, but at this time the proportional valve 8 is throttled to the minimum opening. Therefore, unlike in the conventional case, combustion does not stop at this point, but the temperature control operation continues by throttling the proportional valve 8, and the temperature reaches the set temperature more quickly than in the conventional case. be.
そして放熱器３の運転台数を極端に減らす等、
暖房負荷が極端に小さくなり、比例弁８が最小開
度になつても尚設定温度を維持し得ず、オフ温度
を越えた場合、上記二条件が満足されることとな
つて燃焼が停止するのである。これをフローチヤ
ートで示すと第３図のようになる。 Also, the number of radiators 3 in operation is drastically reduced, etc.
If the heating load becomes extremely small and the set temperature cannot be maintained even when the proportional valve 8 reaches its minimum opening and the off temperature is exceeded, the above two conditions will be satisfied and combustion will stop. It is. This is shown in a flowchart as shown in Figure 3.
またもう一つの問題であるポンプロツク時の過
熱を防止するためには、第４図のように過熱安全
器１０の温度応答性の速い部分、例えばフインパ
イプどうしを連結するベンド管１１部に取り付け
ると共に、前記湯温検出器７は缶体２から離した
出湯管１２部に取り付けて過熱安全器１０よりも
熱応答性を遅らせるようにすればよい。 In addition, in order to prevent overheating when the pump is locked, which is another problem, as shown in FIG. The hot water temperature detector 7 may be attached to a portion of the hot water outlet pipe 12 separated from the can body 2 so that its thermal response is delayed compared to the overheat safety device 10.
こうすればポンプ４がロツクする等、異常加熱
に至つた場合には、湯温検出器７部の温度上昇よ
りも缶体２の温度上昇の方が速く、比例弁８によ
る温度制御に入る前に過熱安全器１０が先に作動
して燃焼を全面的に停止する安全動作となるので
あり、これを報知することによつて異常事態の発
生を知らせるようにしておけば良い。 By doing this, in the event of abnormal heating such as when the pump 4 locks up, the temperature of the can body 2 will rise faster than the temperature rise of the hot water temperature detector 7, and the temperature will rise before temperature control by the proportional valve 8 is started. The overheating safety device 10 operates first to perform a safety operation that completely stops combustion, and by notifying this, it is sufficient to notify the occurrence of an abnormal situation.
なお実施に際しては、比例弁８の開度は比例弁
駆動電流に置き換えることができるため、最小電
流検出器を設けてこの動作信号と湯温検出器７の
オフ温度検出信号とを論理回路等で処理してオン
オフ弁９を動作させる等の構成が考えられる。 In addition, in implementation, since the opening degree of the proportional valve 8 can be replaced with the proportional valve drive current, a minimum current detector is provided and this operating signal and the off-temperature detection signal of the hot water temperature detector 7 are connected by a logic circuit, etc. A configuration such as processing and operating the on/off valve 9 is conceivable.
以上のように本考案は、湯温検出器の検出温度
と設定温度との差に応じて燃焼量を比例弁により
比例制御し、出湯温度を設定温度に保つようにす
ると共に、暖房負荷が比例制御で上記設定温度に
維持し得ない小負荷時には、湯温検出器の検出温
度が所定のオフ温度を越えることにより燃焼を停
止するものにおいて、この燃焼の停止を上記湯温
検出器のオフ温度通過と比例弁が開度最小である
ことの両者を満足して初めて行うようにしたもの
であるから、運転立ち上がり時にはオーバーシユ
ートで燃焼を停止してしまうことなくそのまま比
例制御動作を続け、安定温度に早く達する結果、
暖房開始可能時間が短縮できる効果がある。また
過熱安全器を湯温検出器よりも熱応答の速い位置
に設けておくことにより、湯温検出器による消
火、着火を繰り返すことなく安全動作に直ちに入
らせて安全を確保することのできる利点がある。 As described above, the present invention uses a proportional valve to proportionally control the combustion amount according to the difference between the temperature detected by the hot water temperature detector and the set temperature, so that the hot water temperature is maintained at the set temperature, and the heating load is proportionally controlled. When the temperature is small and cannot be maintained at the set temperature by control, combustion is stopped when the temperature detected by the hot water temperature sensor exceeds the predetermined off temperature. This is done only when both the passage and the minimum opening of the proportional valve are satisfied, so at the start of operation, the proportional control operation continues without stopping combustion due to overshoot, resulting in stable operation. As a result of reaching the temperature faster,
This has the effect of shortening the time that heating can be started. In addition, by installing the overheating safety device in a position where the thermal response is faster than the hot water temperature detector, safety can be ensured by immediately entering safe operation without repeating extinguishing and ignition by the hot water temperature detector. There is.
第１図は本考案に係る温水暖房装置の概略図、
第２図は従来のものと本考案とを対比させた立ち
上がり時の湯温変動グラフ、第３図は本考案の動
作の一部を説明するフローチヤート、第４図は本
考案の一実施例を示す缶体部の斜視図である。
７……湯温検出器、８……比例弁。
Fig. 1 is a schematic diagram of a hot water heating device according to the present invention;
Figure 2 is a graph of hot water temperature fluctuation at startup comparing the conventional one and the present invention, Figure 3 is a flowchart explaining part of the operation of the present invention, and Figure 4 is an example of an embodiment of the present invention. It is a perspective view of the can body part showing. 7... Hot water temperature detector, 8... Proportional valve.
Claims (1)
て燃焼量を比例弁により比例制御し、出湯温度を
設定温度に保つようにすると共に、暖房負荷が比
例制御で上記設定温度に維持し得ない小負荷時に
は、湯温検出器の検出温度が所定のオフ温度を越
えることにより燃焼を停止するものにおいて、こ
の燃焼の停止を上記湯温検出器のオフ温度通過と
比例弁が開度最小であることの両者を満足して初
めて行うようにするとともに、異常加熱時に燃焼
を停止する過熱安全器をフインパイプどうしを連
結するベンド管部に設け、上記湯温検出器を缶体
から離した出湯管部に設けて上記過熱安全器より
も熱応答性を遅らせるようにしたことを特徴とす
る温水暖房装置。 The combustion amount is proportionally controlled by a proportional valve according to the difference between the temperature detected by the hot water temperature detector and the set temperature, and the hot water temperature is maintained at the set temperature, and the heating load is maintained at the above set temperature by proportional control. When the load is small and the temperature detected by the hot water temperature sensor exceeds the predetermined off temperature, combustion is stopped. In addition, an overheat safety device that stops combustion in the event of abnormal heating is installed in the bend pipe section that connects the fin pipes, and the hot water temperature sensor is placed away from the can body. A hot water heating device characterized in that the overheating safety device is provided in a pipe portion to delay thermal response more than the above-mentioned overheating safety device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8364183U JPS59186743U (en) | 1983-05-31 | 1983-05-31 | hot water heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8364183U JPS59186743U (en) | 1983-05-31 | 1983-05-31 | hot water heating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59186743U JPS59186743U (en) | 1984-12-11 |
| JPS622456Y2 true JPS622456Y2 (en) | 1987-01-21 |
Family
ID=30213599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8364183U Granted JPS59186743U (en) | 1983-05-31 | 1983-05-31 | hot water heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59186743U (en) |
-
1983
- 1983-05-31 JP JP8364183U patent/JPS59186743U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59186743U (en) | 1984-12-11 |
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