JP2698892B2 - Gas combustion equipment - Google Patents
Gas combustion equipmentInfo
- Publication number
- JP2698892B2 JP2698892B2 JP5011927A JP1192793A JP2698892B2 JP 2698892 B2 JP2698892 B2 JP 2698892B2 JP 5011927 A JP5011927 A JP 5011927A JP 1192793 A JP1192793 A JP 1192793A JP 2698892 B2 JP2698892 B2 JP 2698892B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchange
- exchange section
- water
- pipe
- water pipe
- 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 - Fee Related
Links
Landscapes
- Chimneys And Flues (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガス燃焼装置、特に、
燃焼排気中における窒素酸化物或は一酸化炭素等の有害
ガスの発生を低減するための２段式の熱交換器を具備す
るガス燃焼装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas combustion device,
The present invention relates to a gas combustion device provided with a two-stage heat exchanger for reducing generation of harmful gases such as nitrogen oxides or carbon monoxide in combustion exhaust gas.
【０００２】[0002]
【従来技術及びその課題】最近、ガス器具の燃焼排気に
含まれる窒素酸化物を少なくする技術が開発されるよう
になり、環境保護を十分に考慮されたガス器具が出現し
てきた。窒素酸化物は、ガス器具の燃焼部へ供給される
空気に含まれる窒素が高温条件下で酸化されることによ
って生成されるもの（サーマルＮＯｘ）であるが、かか
る窒素酸化物の発生量を抑え得るガス燃焼装置として、
図６に示すように、２段式の熱交換器とガスバーナ(3)
(3)とが組み合わされたものが提案されている。2. Description of the Related Art In recent years, techniques for reducing nitrogen oxides contained in combustion exhaust gas from gas appliances have been developed, and gas appliances with sufficient consideration for environmental protection have appeared. Nitrogen oxides are generated by oxidizing nitrogen contained in the air supplied to the combustion part of the gas appliance under high temperature conditions (thermal NOx). The amount of generated nitrogen oxides is suppressed. As a gas combustion device to obtain
As shown in Fig. 6, a two-stage heat exchanger and gas burner (3)
A combination of (3) has been proposed.
【０００３】この熱交換器は、主熱交換部(1) と、その
下部に配設された副熱交換部(2) とから構成されてお
り、前記主熱交換部(1) は多数のフィン(1a)(1a)とこれ
を貫通する通水管(10)とから成り、又、前記副熱交換部
(2) は前記フィン(1a)(1a)より粗い間隔で配設されたフ
ィン(2a)(2a)とこれを貫通する連絡管(20)とから成る。
そして、前記副熱交換部(2) は前記ガスバーナ(3)(3)の
炎形成域内に位置するようにし、前記通水管(10)と前記
連絡管(20)とは接続されて連絡管(20)からは水道水が供
給される。This heat exchanger comprises a main heat exchange section (1) and a sub heat exchange section (2) disposed below the main heat exchange section (1). A fin (1a) (1a) and a water pipe (10) penetrating therethrough;
(2) comprises fins (2a) and (2a) arranged at a coarser interval than the fins (1a) and (1a) and a connecting pipe (20) penetrating therethrough.
The auxiliary heat exchange section (2) is located within the flame formation area of the gas burners (3) (3), and the water pipe (10) and the communication pipe (20) are connected to each other to form a communication pipe ( From 20), tap water is supplied.
【０００４】このものでは、熱交換器の連絡管(20)や通
水管(10)内の通水は、ガスバーナ(3)(3)の発生熱量を上
記フィンから吸熱して湯となって装置外部に取り出され
るが、そのための吸熱作用は、主に主熱交換部(1) で行
われており、副熱交換部(2)では、主としてガスバーナ
(3)(3)の炎の冷却が行われて、この冷却作用により窒素
酸化物の生成が抑えられている。一方、前記副熱交換部
(2) を前記ガスバーナ(3)(3)の炎近傍に位置させて燃焼
排気温度を所定の温度域に抑えると、一酸化炭素の生成
を低減させることができる。In this apparatus, the water passing through the communication pipe (20) and the water pipe (10) of the heat exchanger absorbs the heat generated by the gas burners (3) and (3) from the fins to become hot water. The heat is taken out to the outside, but the heat absorption for this is mainly performed in the main heat exchange section (1), and the sub heat exchange section (2) is mainly used for the gas burner.
(3) The cooling of the flame of (3) is performed, and the generation of nitrogen oxides is suppressed by this cooling action. On the other hand, the sub heat exchange section
When (2) is located near the flame of the gas burners (3) and (3) and the temperature of the combustion exhaust gas is suppressed to a predetermined temperature range, the generation of carbon monoxide can be reduced.
【０００５】ところが、これらのものでは、副熱交換部
(2) の連絡管(20)に結露が発生して腐食が生じるという
問題がある。これは、副熱交換部(2) の連絡管(20)内の
通水により該連絡管(20)周壁が冷却され該連絡管(20)周
壁に接触した燃焼排気が冷却されて露点以下の温度とな
り、該連絡管(20)周壁に燃焼排気中の水分が結露するか
らである。However, in these devices, the auxiliary heat exchange section
There is a problem that dew condensation occurs on the connecting pipe (20) of (2) and causes corrosion. This is because the peripheral wall of the communication pipe (20) is cooled by the flow of water in the communication pipe (20) of the sub heat exchange section (2), and the combustion exhaust gas that has contacted the peripheral wall of the communication pipe (20) is cooled, so that the temperature of the combustion pipe is lower than the dew point. This is because the temperature of the exhaust gas reaches the temperature, and the moisture in the combustion exhaust dew forms on the peripheral wall of the connecting pipe (20).
【０００６】本発明は、このような、『多数のフィン
（１ａ）（１ａ）に通水管を貫通させた主熱交換部
（１）をガスバーナ（３）（３）から離れて配置し、複
数のフィン（２ａ）（２ａ）に連絡管（２０）を貫通さ
せた副熱交換部（２）を前記ガスバーナ（３）（３）の
炎形成域の内部又はその近傍に位置させると共に、主熱
交換部（１）の前記通水管と副熱交換部（２）の前記連
絡管（２０）とを直列接続して燃焼排気中の有害ガスの
発生を低減させるようにしたガス燃焼装置』において、
結露の発生による副熱交換部（２）の連絡管（２０）の
腐食を防止することをその課題とする。According to the present invention, the main heat exchange portion (1) having a large number of fins (1a) (1a) having a water pipe penetrated therethrough is arranged away from the gas burners (3) (3), The sub heat exchange part (2) having the communication pipe (20) penetrated through the fins (2a) and (2a) of the gas burners (3) and (3) is positioned inside or near the flame forming area of the gas burners (3) and (3), and A gas combustion device in which the water pipe of the exchange section (1) and the communication pipe (20) of the sub heat exchange section (2) are connected in series to reduce the generation of harmful gas in the combustion exhaust.
An object of the present invention is to prevent corrosion of a communication pipe (20) of a sub heat exchange section (2) due to dew condensation.
【０００７】[0007]
【技術的手段】上記課題を解決するために講じた本発明
の技術的手段は、『主熱交換部(1) を、第１通水管(11)
を具備する第１熱交換部と、第２通水管(12)を具備する
第２熱交換部とに区分し、前記第１・第２通水管を共に
共通のフィン(1a)(1a)に挿通させ、前記第２通水管(12)
に連絡管(20)を接続し、この連絡管(20)に第１通水管(1
1)を接続するようにした』ことである。[Technical Means] The technical means of the present invention taken to solve the above-mentioned problem is that "the main heat exchange part (1) is connected to the first water pipe (11).
And a second heat exchange unit having a second water pipe (12), and the first and second water pipes are both connected to a common fin (1a) (1a). Insert the second water pipe (12)
A connecting pipe (20) is connected to the connecting pipe (20).
1) was connected. "
【０００８】[0008]
【作用】本発明の上記技術的手段は、次のように作用す
る。本発明のガス燃焼装置では、水道水を第２熱交換部
の第２通水管(12)から供給して副熱交換部(2) の連絡管
(20)を経て第１熱交換部の第１通水管(11)から湯を取り
出すようにしている。The above technical means of the present invention operates as follows. In the gas combustion apparatus according to the present invention, tap water is supplied from the second water pipe (12) of the second heat exchange section and the connecting pipe of the sub heat exchange section (2) is supplied.
Hot water is taken out from the first water pipe (11) of the first heat exchange section via (20).
【０００９】ガスバーナ(3)(3)の燃焼と共に第２熱交換
部の第２通水管(12)から水道水を供給すると、第２通水
管(12)内の通水は、ガスバーナ(3)(3)の発生熱量を多数
のフィン(1a)(1a)から吸熱することにより加熱される。
次に、この加熱昇温された温水は、副熱交換部(2) の連
絡管(20)内に流れることとなるので、該連絡管(20)周壁
の冷却度合いが小さくなり該連絡管(20)周壁に接触した
燃焼排気は露点以下の温度にならず結露しない。又、こ
の副熱交換部(2) は、ガスバーナ(3)(3)の炎の形成域の
内部又は近傍に位置しているので、ガスバーナ(3)(3)で
生成される炎或は燃焼排気が前記副熱交換部(2) の連絡
管(20)やフィン(2a)(2a)に接触し、該連絡管(20)内の温
水に吸熱されて炎或は燃焼排気が冷却されることにより
窒素酸化物或は一酸化炭素の生成を抑えることができ
る。When tap water is supplied from the second water pipe (12) of the second heat exchange section together with the combustion of the gas burners (3), the water in the second water pipe (12) is supplied to the gas burner (3). Heat is generated by absorbing the heat generated in (3) from the large number of fins (1a) (1a).
Next, the heated water heated and heated flows into the communication pipe (20) of the sub heat exchange section (2), so that the degree of cooling of the peripheral wall of the communication pipe (20) is reduced and the communication pipe (20) is cooled. 20) Combustion exhaust gas that comes into contact with the peripheral wall does not reach a temperature below the dew point and does not condense. Further, since the auxiliary heat exchange section (2) is located inside or near the flame formation area of the gas burners (3) and (3), the flame or combustion generated by the gas burners (3) and (3) is formed. The exhaust gas comes into contact with the connecting pipe (20) and the fins (2a) and (2a) of the auxiliary heat exchange section (2), and is absorbed by the warm water in the connecting pipe (20) to cool the flame or the combustion exhaust gas. This can suppress generation of nitrogen oxides or carbon monoxide.
【００１０】そして、上記副熱交換部(2) の連絡管(20)
内で更に昇温された温水は、第１熱交換部の第１通水管
(11)へと流れ、第１通水管(11)内でフィン(1a)(1a)から
ガスバーナ(3)(3)の発生熱量を吸熱することにより一層
加熱されて最終的に所定温度の湯として装置外部に取り
出される。このとき、第２通水管(12)内には水道水が供
給されているが、第２通水管(12)の周壁は第１通水管(1
1)を挿通させた共通のフィン(1a)(1a)と結合されてい
る。一方、前記第１通水管(11)内の温湯は出湯温度に高
められていることから、この第２通水管挿通部のフィン
の温度は燃焼排気から吸熱される熱量に加えて前記第１
通水管(11)からの伝導熱により比較的高温度に維持され
ることとなり、第２通水管(12)の周壁に接触した燃焼排
気は露点以下の温度にならない。The connecting pipe (20) of the sub heat exchange section (2)
The warmed water further heated in the first heat exchange section of the first water pipe
(11), and is further heated by absorbing heat generated by the gas burners (3) and (3) from the fins (1a) and (1a) in the first water pipe (11), and finally heated to a predetermined temperature. Out of the apparatus. At this time, tap water is supplied into the second water pipe (12), but the peripheral wall of the second water pipe (12) is connected to the first water pipe (1).
It is connected to common fins (1a) (1a) into which 1) is inserted. On the other hand, since the temperature of the hot water in the first water pipe (11) has been raised to the tap water temperature, the temperature of the fins in the second water pipe insertion portion is not only the amount of heat absorbed from the combustion exhaust gas, but also the temperature of the first water pipe.
The relatively high temperature is maintained by the conduction heat from the water pipe (11), and the combustion exhaust gas that has come into contact with the peripheral wall of the second water pipe (12) does not reach a temperature below the dew point.
【００１１】[0011]
【効果】本発明は、上記構成であるから、次の特有の効
果を有する。副熱交換部（２）の連絡管（２０）内に
は、加熱昇温された温水が流れることとなり、該連絡管
（２０）周壁に接触した燃焼排気は露点以下の温度にな
らないので、結露の発生による連絡管（２０）の腐食を
防止できる。又、第１通水管（１１）内の温湯は出湯温
度に高められており、第２通水管挿通部のフィンの温度
は燃焼排気から吸熱される熱量に加えて前記第１通水管
（１１）からの伝導熱により比較的高温度に維持される
こととなり、水道水が供給されている第２通水管（１
２）の周壁に接触した燃焼排気は露点以下にならないの
で、結露の発生はない。According to the present invention having the above-described configuration, the present invention has the following specific effects. Hot water heated and heated flows into the communication pipe (20) of the sub heat exchange section (2), and the combustion exhaust gas that has come into contact with the peripheral wall of the communication pipe (20) does not reach a temperature below the dew point. Corrosion of the connecting pipe (20) due to the occurrence of cracks can be prevented. The temperature of the hot water in the first water pipe (11) is raised to the hot water outlet temperature, and the temperature of the fins in the second water pipe insertion part is not only the amount of heat absorbed from the combustion exhaust gas but also the temperature of the first water pipe (11). Is maintained at a relatively high temperature by conduction heat from the second water pipe (1) to which tap water is supplied.
Since the combustion exhaust coming into contact with the peripheral wall in 2) does not fall below the dew point, no dew condensation occurs.
【００１２】[0012]
【００１３】[0013]
【実施例】次に、上記した本発明を図面に従って説明す
る。図１に示す実施例は、２段式の熱交換器を具備する
給湯器に本発明を実施したものである。このものは、ブ
ンゼン式のガスバーナ(3)(3)を収容するバーナボックス
(5) の上部には、主熱交換部(1) と副熱交換部(2) とか
ら構成される２段式の熱交換器を具備する缶体(4) が接
続されている。前記主熱交換部(1) は、約２．６mmの間
隔で配設された多数のフィン(1a)(1a)とこれを貫通する
通水管(10)とから構成されていると共に、前記副熱交換
部(2) は約１２mmの間隔で配設されたフィン(2a)(2a)と
これを貫通する連絡管(20)とから構成されている。又、
前記副熱交換部(2) の連絡管(20)は、図２に示すよう
に、前記ガスバーナ(3)(3)の上方域に横４列に蛇行状に
配設されており、この副熱交換部(2) のフィン(2a)(2a)
はガスバーナ(3)(3)の炎口を挟むように配設されてい
る。更に、前記通水管(10)は、第１通水管(11)と第２通
水管(12)とから上下２段に構成されており、第１通水管
(11)は、図３に示すように、上段の３列と下段の１列と
によって蛇行状に配設され、又、第２通水管(12)は、下
段の３列に蛇行状に配設されている。そして、第１通水
管(11)と第２通水管(12)と更に連絡管(20)とは、通水経
路が同図において、第２通水管(12)である下段左端から
２列目→３列目→４列目→連絡管(20)の右端から１列目
→２列目→３列目→４列目→第１通水管(11)である下段
左端から１列目→上段左端から１列目→２列目→３列目
となるように接続されている。（図３において、ａ〜ｋ
の順番に通水する。）尚、このものでは、上記第２通水
管(12)である下段左端から２列目→３列目→４列目（ａ
〜ｃ）が既述請求項１の技術的手段の項に記載の第２熱
交換部に対応し、更に、第１通水管(11)である下段左端
から１列目→上段左端から１列目→２列目→３列目（ｈ
〜ｋ）が第１熱交換部に対応している。Next, the present invention will be described with reference to the drawings. The embodiment shown in FIG. 1 is an embodiment in which the present invention is applied to a water heater provided with a two-stage heat exchanger. This is a burner box that houses Bunsen gas burners (3) (3)
At the top of (5), a can (4) having a two-stage heat exchanger composed of a main heat exchange section (1) and a sub heat exchange section (2) is connected. The main heat exchange section (1) is composed of a number of fins (1a) (1a) arranged at intervals of about 2.6 mm and a water pipe (10) penetrating therethrough. The heat exchange part (2) is composed of fins (2a) (2a) arranged at intervals of about 12 mm and a connecting pipe (20) penetrating therethrough. or,
As shown in FIG. 2, the connecting pipes (20) of the sub heat exchange section (2) are arranged in a meandering manner in four rows in a region above the gas burners (3) and (3). Fins (2a) (2a) of heat exchange section (2)
Are arranged so as to sandwich the gas outlets of the gas burners (3) and (3). Further, the water pipe (10) is composed of a first water pipe (11) and a second water pipe (12) in two stages, upper and lower.
As shown in FIG. 3, (11) is arranged in a meandering manner by three upper rows and one lower row, and the second water pipe (12) is arranged in a meandering manner in three lower rows. Has been established. The first water pipe (11), the second water pipe (12), and the communication pipe (20) are located in the second row from the lower left end of the second water pipe (12) in FIG. → 3rd row → 4th row → 1st row from right end of connecting pipe (20) → 2nd row → 3rd row → 4th row → 1st water pipe (11) lower row, 1st row from left end → upper row They are connected so as to be in the first row → second row → third row from the left end. (In FIG. 3, a to k
Water in the following order. In this case, in the second water pipe (12), the second column → the third column → the fourth column (a
To c) correspond to the second heat exchange section described in the technical means of claim 1 described above, and further, the first water pipe (11) is the first row from the lower left end → the first row from the upper left end. Eye → second row → third row (h
To k) correspond to the first heat exchange unit.
【００１４】このものでは、ガスバーナ(3)(3)の燃焼と
共に、第２通水管(12)である下段左端から２列目（ａ）
から水道水を供給すると、通水は、下段左端から２列目
から４列目まで（ａ〜ｃ）の経路内でガスバーナ(3)(3)
の発生熱量をフィン(1a)(1a)から吸熱することにより加
熱昇温される。次に、この加熱昇温された温水は、連絡
管(20)に流れその右列から左列（ｄ〜ｇ）に流れること
となり、このとき連絡管(20)の周壁の冷却度合いが小さ
いので、該連絡管(20)の周壁に接触する燃焼排気は露点
以下の温度にならず、連絡管(20)にドレン（結露）が発
生しない。従ってこれの腐食を防止できる。又、前記連
絡管(20)を具備する副熱交換部(2) は、ガスバーナ(3)
(3)の炎形成域内に位置しているので、ガスバーナ(3)
(3)で生成される炎が連絡管(20)やフィン(2a)(2a)に接
触し、該炎の熱が連絡管(20)内の温水に吸熱されて該炎
が冷却されると共に、連絡管(20)内の温水は更に昇温さ
れる。そして、上記炎の冷却作用により、窒素酸化物の
生成を抑えることができる。又、前記フィン(2a)(2a)
は、前記ガスバーナ(3)(3)の炎口を挟むように比較的大
きな間隔（約１２mm）で配設されているので、ガスバー
ナ(3)(3)の炎に下方から供給される二次空気が円滑に供
給されると共に炎の熱が吸熱され過ぎることはないた
め、不完全燃焼による一酸化炭素の発生が抑えられる。
次に、前記連絡管(20)内の温水は、第１通水管(11)であ
る下段最左列（ｈ）を経て、上段左列から右列（ｉ〜
ｋ）へと流れ、この部分では、フィン(1a)(1a)から前記
ガスバーナ(3)(3)の発生熱量を吸熱し最終的に所定温度
の湯として取り出される。このとき、第２通水管(12)に
は比較的低温の水道水が導入されているが、第２通水管
(12)（ａ〜ｃ）の周壁は第１通水管(11)（ｈ〜ｋ）を挿
通させた共通のフィン(1a)(1a)と結合されている。一
方、前記第１通水管(11)（ｈ〜ｋ）内の温湯は出湯温度
に高められていることから、この第２通水管挿通部のフ
ィンの温度は燃焼排気から吸熱される熱量に加えて前記
第１通水管(11)からの伝導熱により比較的高温度に維持
されることとなり、第２通水管(12)（ａ〜ｃ）の周壁に
接触した燃焼排気は露点以下にならないので、この部分
にドレンが発生しない。尚、前記フィン(1a)(1a)の配設
間隔は、約２．６mmと比較的細かく設定されているの
で、このような吸熱効率を向上させることとなってい
る。In this apparatus, the second burner (3), the second row (a) from the left end of the lower row, which is the second water pipe (12), together with the combustion of the gas burners (3), (3).
When tap water is supplied from, the water flows through the gas burners (3) (3) in the route from the second row to the fourth row (ac) from the lower left end.
The heat generated is absorbed by the fins (1a) and (1a), thereby increasing the temperature. Next, the heated water heated and heated flows into the communication pipe (20) and flows from the right row to the left row (d to g). At this time, the degree of cooling of the peripheral wall of the communication pipe (20) is small. The temperature of the combustion exhaust coming into contact with the peripheral wall of the connecting pipe (20) does not become lower than the dew point, and no drain (condensation) is generated in the connecting pipe (20). Therefore, the corrosion can be prevented. Further, the sub heat exchange section (2) including the connecting pipe (20) is a gas burner (3).
Because it is located in the flame formation area of (3), the gas burner (3)
The flame generated in (3) comes into contact with the communication pipe (20) and the fins (2a) and (2a), and the heat of the flame is absorbed by the warm water in the communication pipe (20), thereby cooling the flame. The warm water in the connecting pipe (20) is further heated. And the generation | occurrence | production of nitrogen oxide can be suppressed by the cooling effect of the said flame. The fins (2a) and (2a)
Are arranged at relatively large intervals (about 12 mm) so as to sandwich the flame opening of the gas burners (3) and (3), so that the secondary gas supplied from below to the flame of the gas burners (3) and (3) is Since the air is smoothly supplied and the heat of the flame is not excessively absorbed, the generation of carbon monoxide due to incomplete combustion is suppressed.
Next, the warm water in the connecting pipe (20) passes through the lower leftmost row (h), which is the first water pipe (11), and then goes from the upper left row to the right row (i to i).
k), where the heat generated by the gas burners (3) and (3) is absorbed from the fins (1a) and (1a) and finally extracted as hot water at a predetermined temperature. At this time, tap water of relatively low temperature is introduced into the second water pipe (12).
(12) The peripheral walls of (a to c) are connected to common fins (1a) and (1a) through which the first water pipes (11) (h to k) pass. On the other hand, since the temperature of the hot water in the first water pipes (11) (h to k) has been raised to the tap water temperature, the temperature of the fins in the second water pipe insertion portion is determined by the amount of heat absorbed from the combustion exhaust gas. As a result, a relatively high temperature is maintained by the heat conducted from the first water pipe (11), and the combustion exhaust gas in contact with the peripheral wall of the second water pipe (12) (ac) does not fall below the dew point. No drain is generated in this portion. The interval between the fins (1a) and (1a) is set relatively small, about 2.6 mm, so that such heat absorption efficiency is improved.
【００１５】尚、上記実施例のものでは、通水管(10)の
下段４列のうち３列を第２通水管(12)としたが、該第２
通水管(12)を通水管(10)の下段１列で構成しても良く、
更に、該通水管(10)の下段４列全てを第２通水管(12)と
しても本発明と同様の効果が得られる。尚、第２通水管
(12)を通水管(10)の下段に設定した上記実施例では、上
段に第２通水管(12)を設ける場合に比べて、燃焼排気の
上流側つまり高温側から吸熱することから、通水管温度
の上昇度合いが大きく、ドレンが一層発生しにくい。In the above embodiment, three of the four lower rows of the water pipes (10) are the second water pipes (12).
The water pipe (12) may be constituted by a lower row of the water pipe (10),
Furthermore, the same effect as in the present invention can be obtained even if all the lower four rows of the water pipes (10) are used as the second water pipes (12). In addition, the second water pipe
(12) In the above-described embodiment in which the second water pipe (12) is provided in the upper stage, heat is absorbed from the upstream side of the combustion exhaust gas, that is, from the high temperature side. The temperature of the water pipe rises greatly, and drainage is less likely to occur.
【００１６】又、上記した熱交換器は、通常銅で形成さ
れるが、副熱交換部(2) の連絡管(20)をステンレスで形
成すれば、ステンレスは水に対して耐食性があることか
ら、連絡管(20)の周壁の燃焼排気が冷却されて露点以下
の温度となり、ドレンが発生するようなことがあっても
連絡管(20)の腐食を確実に防止することができる。又、
この場合には、副熱交換部(2) の連絡管(20)から水道水
を供給して主熱交換部(1) の通水管(10)から湯を取り出
す従来の形式の給湯器でも、連絡管(20)が腐食すること
を防止できる。The above-mentioned heat exchanger is usually made of copper. However, if the connecting pipe (20) of the sub heat exchange section (2) is made of stainless steel, the stainless steel has corrosion resistance to water. Accordingly, even if the combustion exhaust gas on the peripheral wall of the communication pipe (20) is cooled to a temperature below the dew point and drainage occurs, the corrosion of the communication pipe (20) can be reliably prevented. or,
In this case, even with a conventional water heater that supplies tap water from the connecting pipe (20) of the sub heat exchange section (2) and removes hot water from the water pipe (10) of the main heat exchange section (1), Corrosion of the connecting pipe (20) can be prevented.
【００１７】更に、この副熱交換部(2) の連絡管(20)
は、図４に示すように、ストレート部(21)とベンド部(2
2)から構成されて蛇行状となっているが、ステンレスで
ベンド部(22)を形成するのは困難なため、ベンド部(22)
のみ銅で形成しても、この部分は、通常、熱交換器の缶
体(4) の外に突出して配設され、燃焼排気と接触しない
ので問題はない。Furthermore, a connecting pipe (20) of the sub heat exchange section (2)
As shown in FIG. 4, the straight portion (21) and the bend portion (2
Although it is composed of 2) and has a meandering shape, it is difficult to form the bend portion (22) with stainless steel, so the bend portion (22)
Even if it is formed only of copper, there is no problem because this portion is usually provided so as to protrude outside the can body (4) of the heat exchanger and does not come into contact with the combustion exhaust gas.
【００１８】又、主熱交換部(1) の通水管(10)は、図５
に示すように、３段以上で構成しても良い。この場合、
最下段の通水管(10)を本発明の第２通水管(12)として水
道水を供給する。又、１段で構成しても良い。尚、上記
実施例では、第２通水管(12)を通水管(10)の最下段に設
定したが、管の周壁の温度が露点以下にならない上段部
分を第２通水管(12)としても良い。The water pipe (10) of the main heat exchange section (1) is shown in FIG.
As shown in FIG. in this case,
Tap water is supplied to the lowermost water pipe (10) as the second water pipe (12) of the present invention. Further, it may be constituted by one stage. In the above-described embodiment, the second water pipe (12) is set at the bottom of the water pipe (10). However, the upper section where the temperature of the peripheral wall of the pipe does not become lower than the dew point may be used as the second water pipe (12). good.
【００１９】又、上記実施例では、副熱交換部(2) をガ
スバーナ(3)(3)の炎形成域内に位置させて窒素酸化物の
発生を低減させるガス燃焼装置について説明したが、副
熱交換部(2) をガスバーナ(3)(3)の炎近傍に位置させて
燃焼排気温度を所定の温度範囲（1000℃〜1500℃）に抑
えることにより、一酸化炭素の生成を低減させる方式の
ガス燃焼装置に本発明を適用しても良い。尚、いずれの
場合も、ガスバーナ(3)(3)をブンゼン式バーナに限らず
全一次空気式バーナとしても良い。Further, in the above embodiment, the gas combustion apparatus for reducing the generation of nitrogen oxides by locating the sub heat exchange section (2) in the flame formation area of the gas burners (3) and (3) has been described. A method to reduce the generation of carbon monoxide by placing the heat exchange section (2) near the flame of the gas burners (3) and (3) and keeping the combustion exhaust temperature within a predetermined temperature range (1000 ° C to 1500 ° C) The present invention may be applied to the gas combustion device described above. In any case, the gas burners (3) and (3) are not limited to Bunsen burners, and may be all-primary pneumatic burners.
【００２０】又、フィンの材質、厚み等で吸熱効率に差
異を設ける場合には、主熱交換部(1) のフィン(1a)(1a)
と副熱交換部(2) のフィン(2a)(2a)とは、配設間隔を同
じに設定しても良い。When a difference is made in the heat absorption efficiency depending on the material and thickness of the fins, the fins (1a) and (1a) of the main heat exchange section (1) are used.
The fins (2a) and (2a) of the auxiliary heat exchange section (2) may be set at the same interval.
【図１】実施例の説明図FIG. 1 is an explanatory view of an embodiment.
【図２】副熱交換部(2) の斜視図FIG. 2 is a perspective view of a sub heat exchange section (2).
【図３】Ｘ−Ｘ断面図FIG. 3 is a sectional view taken along line XX.
【図４】副熱交換部(2) の連絡管(20)の説明図FIG. 4 is an explanatory view of a communication pipe (20) of a sub heat exchange section (2).
【図５】他の実施例の説明図FIG. 5 is an explanatory view of another embodiment.
【図６】従来例の説明図FIG. 6 is an explanatory view of a conventional example.
(1) ・・・主熱交換部 (10)・・・通水管 (11)・・・第１通水管 (12)・・・第２通水管 (2) ・・・副熱交換部 (20)・・・連絡管 (3) ・・・ガスバーナ (1a)(2a)・・・フィン (1) ・ ・ ・ Main heat exchange part (10) ・ ・ ・ Water pipe (11) ・ ・ ・ First water pipe (12) ・ ・ ・ Second water pipe (2) ・ ・ ・ Sub heat exchange part (20 ) ・ ・ ・ Connection pipe (3) ・ ・ ・ Gas burner (1a) (2a) ・ ・ ・ Fin
Claims (1)
を貫通させた主熱交換部（１）をガスバーナ（３）
（３）から離れて配置し、複数のフィン（２ａ）（２
ａ）に連絡管（２０）を貫通させた副熱交換部（２）を
前記ガスバーナ（３）（３）の炎形成域の内部又はその
近傍に位置させると共に、主熱交換部（１）の前記通水
管と副熱交換部（２）の前記連絡管（２０）とを直列接
続して燃焼排気中の有害ガスの発生を低減させるように
したガス燃焼装置において、主熱交換部（１）を、第１
通水管（１１）を具備する第１熱交換部と、第２通水管
（１２）を具備する第２熱交換部とに区分し、前記第１
・第２通水管を共に共通のフィン（１ａ）（１ａ）に挿
通させ、前記第２通水管（１２）に連絡管（２０）を接
続し、この連絡管（２０）に第１通水管（１１）を接続
するようにしたガス燃焼装置。A main heat exchange part (1) having a water pipe penetrated through a number of fins (1a) (1a) is used as a gas burner (3).
A plurality of fins (2a) (2
a) a sub heat exchange section (2) having a communication pipe (20) penetrated therein is positioned inside or near the flame formation area of the gas burners (3) and (3), and the main heat exchange section (1) In a gas combustion apparatus in which the water pipe and the communication pipe (20) of the sub heat exchange section (2) are connected in series to reduce generation of harmful gas in combustion exhaust gas, a main heat exchange section (1) Is the first
The first heat exchange section having a water passage pipe (11) and the second heat exchange section having a second water pipe (12) are divided into the first heat exchange section and the first heat exchange section.
-Both the second water pipes are inserted through the common fins (1a) and (1a), and the communication pipe (20) is connected to the second water pipe (12), and the first water pipe (20) is connected to the communication pipe (20). 11) A gas combustion device to which the device is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5011927A JP2698892B2 (en) | 1993-01-27 | 1993-01-27 | Gas combustion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5011927A JP2698892B2 (en) | 1993-01-27 | 1993-01-27 | Gas combustion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06221672A JPH06221672A (en) | 1994-08-12 |
| JP2698892B2 true JP2698892B2 (en) | 1998-01-19 |
Family
ID=11791318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5011927A Expired - Fee Related JP2698892B2 (en) | 1993-01-27 | 1993-01-27 | Gas combustion equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2698892B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008039389A (en) * | 2007-09-21 | 2008-02-21 | Gastar Corp | Combustion device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242961A (en) * | 2019-04-23 | 2019-09-17 | 苏州金洋环保科技有限公司 | A kind of interior micro- useless processing unit of circulation of pyrolysis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0729365Y2 (en) * | 1990-08-21 | 1995-07-05 | 株式会社ノーリツ | Low NO ▲ Lower x ▼ Combustion device |
| JP2935074B2 (en) * | 1991-03-29 | 1999-08-16 | 昭和アルミニウム株式会社 | Heat exchanger for heating |
-
1993
- 1993-01-27 JP JP5011927A patent/JP2698892B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008039389A (en) * | 2007-09-21 | 2008-02-21 | Gastar Corp | Combustion device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06221672A (en) | 1994-08-12 |
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