JPS5846341Y2 - Solution heating boiler - Google Patents

Description

【考案の詳細な説明】 本考案は、吸収冷温水機の直焚き発生器などに供する内
部にバーナを備えた横型の溶液加熱ボイラに関するもの
である。[Detailed Description of the Invention] The present invention relates to a horizontal solution heating boiler equipped with an internal burner for use in a direct firing generator of an absorption chiller/heater.

従来、例えば吸収式冷温水機の直焚き発生器においては
、外形寸法の関係で横型の溶液加熱ボイラが用いられて
いる。Conventionally, for example, in a direct-fired generator of an absorption type water chiller/heater, a horizontal solution heating boiler has been used due to external dimensions.

その加熱方式には、例えば特開昭５１−１８３５２第３
図に示す如く、バーナに対して奥の方の燃焼ガスを、後
部の煙室を経てケーシングと炉筒の間に貯溜されている
吸収溶液の中を通って設けられた煙管の中を通して吸収
溶液を加熱する方式のもの、又は、例えば特開昭５１−
１８３５２第５図に示す如く、燃焼室の奥に木管を設け
、ケーシングと炉筒との間に貯溜されている吸収溶液を
この水管に導いて加熱する方式などがあるが、何れも燃
焼室内の燃焼が不充分でＮＯｘの排出量が多く公害上問
題があり、また燃焼効率も比較的悪く、その上溶液の保
有量が大であり、コスト面並びに起動特性面でも欠点の
あるものであった。The heating method includes, for example, JP-A No. 51-18352 No. 3.
As shown in the figure, the combustion gas at the back of the burner is passed through the smoke chamber at the rear, through the absorbent solution stored between the casing and the furnace tube, and then through the smoke pipe provided. or, for example, JP-A-51-
18352 As shown in Fig. 5, there is a method in which a wood pipe is installed at the back of the combustion chamber, and the absorption solution stored between the casing and the furnace tube is introduced into this water pipe and heated. The combustion was insufficient, resulting in a large amount of NOx emissions, which caused pollution problems, and the combustion efficiency was also relatively low.Furthermore, the amount of solution retained was large, and there were drawbacks in terms of cost and startup characteristics. .

本考案は、横型溶液加熱ボイラに貫流式の構成を適用し
て流体通路にて燃焼室壁を形威し、かつ流体通路の中の
煙管の開口を、燃焼室への開口はバーナ側、煙道への開
口はバーナと反対側とすることにより、従来のものの上
記の欠点を除き、いわゆる戻り燃焼を行なわしめてＮＯ
ｘ発生量の低減、燃焼効率の向上をはかると共に扱い液
の保有量を減少せしめてコストの低下、起動特性の向上
がはかれる溶液加熱ボイラを提供することを目的とする
ものである。The present invention applies a once-through configuration to a horizontal solution heating boiler, forms the combustion chamber wall with a fluid passage, and connects the opening of the smoke pipe in the fluid passage to the burner side and the smoke pipe opening to the combustion chamber. By setting the opening to the path on the opposite side of the burner, the above-mentioned drawbacks of the conventional method are eliminated, and so-called return combustion is performed to reduce NO.
It is an object of the present invention to provide a solution heating boiler that reduces the amount of x generated, improves combustion efficiency, and reduces the amount of liquid to be handled, thereby reducing costs and improving startup characteristics.

本考案は、はぼ水平に支承されたケーシングの両端に管
寄せを配置し、該管寄せの間に筒型の燃焼室壁を配備し
て中央に燃焼室を外部に前記ケーシングとの間に煙道を
形成し、前記燃焼室壁はその中に前記両管寄せを接続す
る流体通路を備え、前記燃焼室の一端にはバーナを配設
し、前記燃焼室壁内の前記流体通路中に煙管を備え、該
煙管は前記バーナに近い方の端で前記燃焼室に開口し、
かつ前記バーナに遠い方の端で前記ケーシング内の前記
煙道に開口していることを特徴とする溶液加熱ボイラで
ある。In this invention, a header is arranged at both ends of a casing supported horizontally, a cylindrical combustion chamber wall is provided between the headers, and a combustion chamber is placed in the center between the outside and the casing. forming a flue, the combustion chamber wall having a fluid passage therein connecting the headers, a burner disposed at one end of the combustion chamber, and a burner disposed in the fluid passage in the combustion chamber wall; a smoke pipe, the smoke pipe opening into the combustion chamber at an end proximate to the burner;
The solution heating boiler is characterized in that an end remote from the burner opens into the flue in the casing.

本考案を吸収冷温水機の溶液ボイラにおける実施例につ
き、図面を用いて説明すれば、第１図、第２図において
、はは゛水平に配置された円筒形のケーシング１の両端
に円環状の管寄せ２，３が配備され、この管寄せ２，３
との間にほぼ水平に流体通路として水管４が配置され、
各水管４は互いに接して相互間が閉塞されて円筒状の壁
をなして燃焼室壁を形成し、内部に燃焼室５、及び外部
に煙道６を形成し、燃焼室５の一端にはバーナ７が配設
されている。The present invention will be explained with reference to the drawings regarding an embodiment of the present invention in a solution boiler of an absorption chiller/heater. Headers 2 and 3 are installed, and these headers 2 and 3
A water pipe 4 is arranged as a fluid passage almost horizontally between the
The water pipes 4 are in contact with each other and are closed to form a cylindrical wall to form a combustion chamber wall, with a combustion chamber 5 inside and a flue 6 outside. A burner 7 is provided.

水管４の中には煙管８が備えられ、バーナ７に近い側の
端部に燃焼室５への開口９が設けられ、バーナ７に遠い
側の端部に煙道６への開口１０が設けられている。The water pipe 4 is provided with a smoke pipe 8, the end of which is closer to the burner 7 is provided with an opening 9 to the combustion chamber 5, and the end farther from the burner 7 is provided with an opening 10 to the flue 6. It is being

バーナ７と反対側の管寄せ２には蒸気管１１が設けられ
、気液分離器１２に接続されている。A steam pipe 11 is provided in the header 2 on the opposite side of the burner 7 and is connected to a gas-liquid separator 12.

１３は蒸気出口、１４は液出口である。１５は管寄せ３
に接続された給液管、１６は排ガス出口である。13 is a steam outlet, and 14 is a liquid outlet. 15 is header 3
The liquid supply pipe 16 is connected to the exhaust gas outlet.

ボイラ全体は、発生した蒸気が導かれ易いよう蒸気管１
１側がやや高くなるよう傾斜−させることが好ましい。The entire boiler is divided into steam pipes 1 and 1 so that the generated steam can be easily guided.
It is preferable to incline so that the first side is slightly higher.

また水管４の相互間は一部あるいは全部を溶接にて接続
してもよい。Also, some or all of the water pipes 4 may be connected by welding.

また水管４は互いに接触せず相互間をフィンで閉塞して
もよい。Further, the water pipes 4 may not be in contact with each other but may be closed with fins.

液出口１４より回収された液は給液管１５より再び管寄
せ３内に供給されるようになっている。The liquid recovered from the liquid outlet 14 is supplied again into the header 3 through a liquid supply pipe 15.

運転に当たっては、水管４及び管寄せ２，３に溶液を充
填しバーナ７を点火すれば、燃焼ガスは一度管寄せ２側
に達して後、反転して燃焼室の周囲に沿って戻り、いわ
ゆる戻り燃焼を行なった後、開口９より煙管８内に入り
、開口１０より煙道６に入り推力゛ス出口１６から排出
される。During operation, when the water pipe 4 and headers 2 and 3 are filled with solution and the burner 7 is ignited, the combustion gas reaches the header 2 side, then reverses and returns along the periphery of the combustion chamber, so-called After return combustion, the gas enters the smoke pipe 8 through the opening 9, enters the flue 6 through the opening 10, and is discharged from the thrust outlet 16.

この過程の間に水管４中の溶液は燃焼室５側及び内部の
煙管８から加熱されて高温となり、一部は沸騰して蒸気
となり、気液混合の状態で蒸気管１１を気泡ポンプの作
用で上昇し、気液分離器１２に達して分離され、蒸気は
蒸気出口１３から、液は液出口１４から排出される。During this process, the solution in the water pipe 4 is heated from the combustion chamber 5 side and the internal smoke pipe 8 to a high temperature, and a part of it boils and becomes steam, and in the state of gas-liquid mixture, the steam pipe 11 is moved by the action of a bubble pump. The vapor reaches the gas-liquid separator 12 and is separated, and the vapor is discharged from the vapor outlet 13 and the liquid is discharged from the liquid outlet 14.

液は給液管１５に送られ再び管寄せ３から供給され循環
する。The liquid is sent to the liquid supply pipe 15 and then supplied again from the header 3 to be circulated.

加熱され高温になって管寄せ２の中に入った溶液の一部
は水管４のうちのあるものを通って逆流して管寄せ３に
戻る。A portion of the solution heated to a high temperature and entering the header 2 flows back through some of the water pipes 4 and returns to the header 3.

本実施例は、以上の如く構成され供用するので、燃焼室
５内の燃焼は戻り燃焼となるので燃焼が完全となりＮＯ
ｘの発生を抑制することができ、燃焼効率も上昇し、ま
た水管４の中に煙管８が備えられているので伝熱面積が
増大して熱効率が向上し、その上溶液の貯溜部分の面積
が小となるので、所要溶液量を減少せしめてコストの低
下をはかり、また起動特性を良好ならしめることができ
る。Since this embodiment is configured and put into service as described above, the combustion inside the combustion chamber 5 is return combustion, so that the combustion is complete and no NO.
The generation of x can be suppressed, the combustion efficiency will be increased, and since the smoke tube 8 is provided in the water tube 4, the heat transfer area will be increased and the thermal efficiency will be improved. Since the amount of liquid is small, the amount of solution required can be reduced, thereby reducing costs and improving the starting characteristics.

またケーシングの板厚を小とすることができるので材料
費を軽減することができる。Furthermore, since the thickness of the casing can be reduced, material costs can be reduced.

隣接する水管４は直接接触せずフィンを介して接続して
いてもよい。Adjacent water pipes 4 may not be in direct contact but may be connected via fins.

第３図及び第４図は別の実施例を示し、一部の水管４は
煙管８を内蔵するが、残りの木管４′は煙管８を備えず
内部に何も設けられていない方式のものである。FIGS. 3 and 4 show another embodiment, in which some of the water pipes 4 have a built-in smoke pipe 8, but the remaining wood pipes 4' are not equipped with a smoke pipe 8 and have nothing inside. It is.

本実施例では溶液の貯溜溶接は前述の実施例よりも増大
するが、溶液の循環量が確保できる利点を有する。Although this embodiment requires more solution storage welding than the previous embodiment, it has the advantage that the amount of solution circulation can be ensured.

即ち、加熱能力が大であっても管寄せ３側に対する液の
供給が不足すると水管４内で蒸気かもめる割合が大とな
り有効な蒸発が行なわれなくなる。That is, even if the heating capacity is large, if the supply of liquid to the header 3 side is insufficient, the proportion of steam being absorbed in the water pipes 4 will increase, and effective evaporation will not take place.

これを防いで加熱能力に見合わせるためには水管４の容
積を大にするなど大型とせねばならず、大型となればス
ペース上、溶液コスト上などの問題が起きる。In order to prevent this and make it compatible with the heating capacity, the water pipe 4 must be made large, such as by increasing its volume, and if it is made large, problems such as space and solution costs will occur.

これに対し本実施例においては水管４′の溶液は比較的
低温で沸騰も激しくないので、他の沸騰の激しい水管４
により管寄せ２に入った溶液の一部が水管４′を逆流し
て管寄せ３に流入し易くなり、加熱能力に見合った溶液
流量を得ることができ、能力が大でありかつ小型のボイ
ラを得ることができる。On the other hand, in this embodiment, the solution in the water pipe 4' is relatively low temperature and does not boil violently, so the solution in the water pipe 4', which boils violently,
This makes it easier for a part of the solution that entered the header 2 to flow back through the water pipe 4' and into the header 3, making it possible to obtain a solution flow rate commensurate with the heating capacity, and to create a boiler with large capacity and small size. can be obtained.

第５図、第６図は別の実施例で燃焼室壁として内筒１７
、外筒１８から戊る二重円筒構造となっており、内筒１
７、外筒１８との間の空間が流体通路となっているもの
である。FIGS. 5 and 6 show another embodiment in which an inner cylinder 17 is used as a combustion chamber wall.
, has a double cylindrical structure that is hollowed out from the outer cylinder 18, and the inner cylinder 1
7. The space between it and the outer cylinder 18 serves as a fluid passage.

本考案は、はぼ水平に支承されたケーシングの両端に管
寄せを配置し、該管寄せの間に筒型の燃焼室壁を配備し
て中央に燃焼室を外部に前記ケーシングとの間に煙道を
形成し、前記燃焼室壁はその中に前記両管寄せを接続す
る流体通路を備え、前記燃焼室の一端にはバーナを配設
し、前記燃焼室内壁の前記流体通路中に煙管を備え、該
煙管は前記バーナに近い方の端で前記燃焼室に開口し、
かつ前記バーナに遠い方の端で前記ケーシング内の前記
煙道に開口していることにより、いわゆる戻り燃焼を行
なわしめてＮＯｘの発生の抑制及び燃焼効率の向上をは
かり、かつ扱い液の貯溜容積を減じてコスト低減及び起
動特性の向上をはかることが可能なボイラを提供するこ
とができ、実用上公害防止上極めて大なる効果を有する
ものである。In this invention, a header is arranged at both ends of a casing supported horizontally, a cylindrical combustion chamber wall is provided between the headers, and a combustion chamber is placed in the center between the outside and the casing. a flue is formed, the combustion chamber wall having a fluid passage therein connecting the headers, a burner disposed at one end of the combustion chamber, and a flue in the fluid passage of the combustion chamber wall. , the smoke pipe opening into the combustion chamber at the end closer to the burner;
Moreover, by opening into the flue in the casing at the end farthest from the burner, so-called return combustion is performed to suppress the generation of NOx and improve combustion efficiency, and to reduce the storage volume of the liquid to be handled. Therefore, it is possible to provide a boiler that can reduce costs and improve starting characteristics, and has an extremely large practical effect in terms of pollution prevention.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図、第３図及び第５
図は別の実施例を示す縦断面図、第２図、第４図及び第
６図はそれぞれＩ−Ｉ線、ＩＩ −ＩＩ線、ＩＩＩＩＩ
Ｉ線における横断面図である。 １・・・・・・ケーシング、２，３・・・・・・管寄せ
、４，４′・・・・・・水管、５・・・・・・燃焼室、
６・・・・・・煙道、７・・・・・・バーナ、８・・・
・・・煙管、９，１０・・・・・・開口、１１・・・・
・・蒸気管、１２・・・・・・気液分離器、１３・・・
・・・蒸気出口、１４・・・・・・液出口、１５・・・
・・・給液管、１６・・・・・・排ガス出口、１７・・
・・・・内筒、１８・・・・・・外筒。The drawings show embodiments of the present invention, and include FIGS. 1, 3 and 5.
The figure is a longitudinal cross-sectional view showing another embodiment, and FIGS. 2, 4, and 6 are line II, II-II, and III, respectively.
FIG. 3 is a cross-sectional view taken along the I line. 1... Casing, 2, 3... Header, 4, 4'... Water pipe, 5... Combustion chamber,
6... Flue, 7... Burner, 8...
... Smoke pipe, 9, 10... Opening, 11...
...Steam pipe, 12... Gas-liquid separator, 13...
...Steam outlet, 14...Liquid outlet, 15...
...Liquid supply pipe, 16...Exhaust gas outlet, 17...
...Inner cylinder, 18...Outer cylinder.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] １．はぼ水平に支承されたケーシングの両端に管寄せを
配置し、該管寄せの間に筒型の燃焼室壁を配備して中央
に燃焼室を外部に前記ケーシングとの間に煙道を形成し
、前記燃焼室壁はその中に前記両管寄せを接続する流体
通路を備え、前記燃焼室の一端にはバーナを配設し、前
記燃焼室壁内の前記流体通路中に煙管を備え、該煙管は
前記バーナに近い方の端で前記燃焼室に開口し、かつ前
記バーナに遠い方の端で前記ケーシング内の前記煙道に
開口していることを特徴とする溶液加熱ボイラ。 ２、前記燃焼室壁が、多数の水管を隣接して並べ筒状に
形成したものであり、該水管の中が前記流体通路となっ
ている実用新案登録請求の範囲第１項記載のボイラ。 ３、前記煙管が前記水管の全てに対し備えられている実
用新案登録請求の範囲第２項記載のボイラ。 ４、前記煙管が前記木管のうち一部の水管のみに備えら
れている実用新案登録請求の範囲第２項記載のボイラ。 ５、前記燃焼室壁が、内筒及び外筒から成る二重筒構造
であり、前記内筒及び外筒の間の空間が前記流体通路と
なっている実用新案登録請求の範囲第１項記載のボイラ
。1. A header is arranged at both ends of a casing that is supported horizontally, and a cylindrical combustion chamber wall is provided between the headers to form a combustion chamber in the center and a flue between the outside and the casing. the combustion chamber wall has a fluid passage therein connecting the headers, a burner is disposed at one end of the combustion chamber, and a smoke pipe is provided in the fluid passage in the combustion chamber wall; A solution heating boiler characterized in that the smoke pipe opens into the combustion chamber at an end near the burner and into the flue in the casing at an end remote from the burner. 2. The boiler according to claim 1, wherein the combustion chamber wall is formed into a cylindrical shape by arranging a large number of water pipes adjacent to each other, and the inside of the water pipe is the fluid passage. 3. The boiler according to claim 2, wherein the smoke pipe is provided for all of the water pipes. 4. The boiler according to claim 2, wherein the smoke pipe is provided only in some of the water pipes among the wood pipes. 5. Utility model registration claim 1, wherein the combustion chamber wall has a double cylinder structure consisting of an inner cylinder and an outer cylinder, and the space between the inner cylinder and the outer cylinder serves as the fluid passage. boiler.