JPH0754219B2 - Direct-fired generator - Google Patents
Direct-fired generatorInfo
- Publication number
- JPH0754219B2 JPH0754219B2 JP14570387A JP14570387A JPH0754219B2 JP H0754219 B2 JPH0754219 B2 JP H0754219B2 JP 14570387 A JP14570387 A JP 14570387A JP 14570387 A JP14570387 A JP 14570387A JP H0754219 B2 JPH0754219 B2 JP H0754219B2
- Authority
- JP
- Japan
- Prior art keywords
- flue
- generator
- solution
- direct
- fired generator
- 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
- Inorganic Insulating Materials (AREA)
- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】 (イ) 産業上の利用分野 本発明は直焚発生器に係り、特に吸収冷凍機に使用され
る直焚発生器(以下、発生器という)に関する。TECHNICAL FIELD The present invention relates to a direct-fired generator, and more particularly to a direct-fired generator (hereinafter referred to as a generator) used in an absorption refrigerator.
(ロ) 従来の技術 臭化リチウム−水系の吸収冷凍機に使用される発生器の
従来の技術として、例えば実公昭61−9317号公報にみら
れるように、吸収液の流通する溶液管群を煙道内に垂直
に設け、バーナーからの燃焼ガスに加熱された吸収液が
生ずる水蒸気と共に上方に流通し撹拌され易いような構
造のものが公知となっている。(B) Conventional Technology As a conventional technology of a generator used for a lithium bromide-water absorption refrigerator, for example, as shown in Japanese Utility Model Publication No. 61-9317, a solution pipe group through which an absorption liquid flows is used. A structure is known in which the structure is provided vertically in the flue and flows upward together with the steam generated by the absorption liquid heated by the combustion gas from the burner and easily stirred.
(ハ) 発明が解決しようとする問題点 しかし、此種従来の発生器においては、バーナーからの
燃焼ガスは煙道上流側の溶液管内の吸収液と熱交換した
後温度が低下する。前記燃焼ガスはそれでも尚温度が高
いので、燃焼ガスは煙道下流側では主に煙道の上部側を
通過していた。このため、煙道下流側で下部の吸収液が
加熱されにくいので、この部分では他の部分よりも吸収
液の濃度の高いものが滞留しやすく、分路内での吸収液
の濃度分布が不均一になりやすい。このことは、発生器
の構造部材の防錆剤として吸収液に充填するモリブデン
酸リチウムやクロム酸リチウムなどの濃度分布において
も、同様である。そのため、従来の発生器では、その加
熱の停止後に多数の分路内においてその下部に臭化リチ
ウムの晶析を生じやすい問題点があり、また、濃度差に
よって生じる微弱電流の作用で発生器の構造部材の腐食
を早める問題点があった。(C) Problems to be Solved by the Invention However, in the conventional generator of this type, the temperature of the combustion gas from the burner decreases after heat exchange with the absorbing liquid in the solution pipe upstream of the flue. Since the combustion gas still has a high temperature, the combustion gas mainly passed through the upper part of the flue downstream of the flue. For this reason, since the lower part of the absorption liquid is less likely to be heated on the downstream side of the flue, the part with a higher concentration of the absorption liquid tends to stay in this part than in other parts, and the concentration distribution of the absorption liquid in the shunt is not uniform. It tends to be uniform. This also applies to the concentration distribution of lithium molybdate or lithium chromate, which is filled in the absorbing solution as an anticorrosive agent for the structural member of the generator. Therefore, in the conventional generator, there is a problem that crystallization of lithium bromide is likely to occur in the lower part of the shunt in many shunts after the heating is stopped. There is a problem of accelerating the corrosion of structural members.
本発明は、これらの問題点に鑑み、吸収液の結晶の軽減
と構造部材の腐食の緩和との可能な発生器の提供を技術
的課題としたものである。In view of these problems, the present invention has an object to provide a generator capable of reducing crystals of the absorbing liquid and reducing corrosion of structural members.
(ニ) 問題点を解決するための手段 本発明は、上記の問題点を解決する手段として、燃焼
室、煙道、溶液流通部および煙道にほぼ垂直に設けられ
た溶液管群を有する直焚発生器において、前記煙道内の
上流側ほど高さの低い案内板及び下流側ほど高さの高い
案内板を煙道の上部、かつ溶液管の間に設けた直焚発生
器を提供するものである。(D) Means for Solving Problems As a means for solving the above problems, the present invention has a combustion chamber, a flue, a solution flow section, and a solution tube group provided substantially vertically to the flue. In the flame generator, there is provided a direct flame generator in which a guide plate having a lower height on the upstream side in the flue and a guide plate having a higher height on the downstream side are provided in the upper part of the flue and between the solution pipes. Is.
(ホ) 作用 本発明の発生器においては、その加熱時、煙道の下流側
ほど高さの高い案内板によって燃焼ガスの流れを下降さ
せて煙道内下流側および底部近くへ導く作用を発揮す
る。(E) Action In the generator of the present invention, when heated, it exerts the action of lowering the flow of the combustion gas by the guide plate having a height higher on the downstream side of the flue and guiding it toward the downstream side and the bottom of the flue. .
(ヘ) 実施例 第1図は本発明による吸収冷凍機用発生器の一実施例を
示した要部切欠斜視図であり、第2図は第1図に示した
発生器の側面から見た横断面図である。また、第3図は
第2図に示した発生器のX−X矢視の縦断面図であり、
第4図は第2図に示した発生器のY−Y矢視の断面図で
ある。なお、これらの図において、同一の構成要素には
同じ符号を付している。(F) Embodiment FIG. 1 is a cutaway perspective view of an essential part showing an embodiment of a generator for an absorption refrigerator according to the present invention, and FIG. 2 is a side view of the generator shown in FIG. FIG. Further, FIG. 3 is a vertical cross-sectional view of the generator shown in FIG.
FIG. 4 is a sectional view of the generator shown in FIG. In addition, in these drawings, the same components are denoted by the same reference numerals.
第1図において、(1)は発生器の器胴であり、この器
胴内には燃焼室(2)が形成され、この燃焼室に臨ませ
てバーナー(B)が器胴(1)に装備されている。
(3)は燃焼室(2)の後方と連通し、かつ、その上方
に形成されている煙道で、この煙道には溶液管(4),
(4)…群が垂直に、かつ、千鳥状に配備されている。
(5)は煙道(3)と連通する煙室であり、この煙室は
煙突(6)が備えてある。前記煙道(3)内上流側ほど
高さが低く、下流側ほど高さが高い案内板(21),(2
2),(23),(24),(25)が前記煙道(3)の天面
に設けられている。In FIG. 1, (1) is a body of a generator, a combustion chamber (2) is formed in the body, and a burner (B) faces the body of the combustion chamber (1). Equipped.
(3) is a flue which communicates with the rear of the combustion chamber (2) and is formed above the flue, and the solution pipe (4),
(4) ... Groups are arranged vertically and in a staggered manner.
(5) is a smoke chamber communicating with the flue (3), and this smoke chamber is provided with a chimney (6). Guide plates (21), (2) whose height is lower on the upstream side in the flue (3) and higher on the downstream side.
2), (23), (24) and (25) are provided on the top surface of the flue (3).
(7)は吸収液の導入口であり、(8)は吸収液の流出
口である。また、(9)は蒸気の流出口である。そし
て、器胴(1)内壁と燃焼室(2)外壁および煙道
(3)外壁ならびに溶液管(4)内壁とで囲まれたスペ
ースには吸収液〔臭化リチウム水溶液〕の液相部とその
蒸気の気相部とが形成されている。(7) is an inlet for the absorbent, and (8) is an outlet for the absorbent. Further, (9) is a steam outlet. In the space surrounded by the inner wall of the body (1), the outer wall of the combustion chamber (2), the outer wall of the flue (3) and the inner wall of the solution pipe (4), there is a liquid phase part of the absorbing liquid [lithium bromide aqueous solution]. The vapor phase portion of the vapor is formed.
なお、(10),(10)は器胴(1)載置用の架台であ
り、(R)は器胴(1)上部に形成した蒸気室である。In addition, (10) and (10) are mounts for mounting the body barrel (1), and (R) is a steam chamber formed on the upper part of the body barrel (1).
また、第2図ないし第3図において、(11),(12),
(13)(14),(15),(16),(17)は、それぞれ、
上記液相部としての溶液流通部である。そして、溶液管
(4),(4)…内は前記溶液流通部(16),(17)と
連通していて吸収液の通路(18),(18)…を形成し、
かつ、煙道(3)には燃焼ガスの通路(19),(19)…
および(20),(20)…が形成されている。Further, in FIGS. 2 to 3, (11), (12),
(13) (14), (15), (16), (17) are respectively
It is a solution flow section as the liquid phase section. Then, the insides of the solution pipes (4), (4) ... Are in communication with the solution circulation parts (16), (17) to form passages (18), (18) ...
Moreover, the combustion gas passages (19), (19) in the flue (3) ...
And (20), (20) ... Are formed.
なお、第2図に示した(O)はバーナー(B)の取付け
口であり、第2図および第3図に示した(P1),(P2)
は、それぞれ、蒸気流出用の管、吸収液導入用の管であ
る。また、第2図および第4図に示した(F)は煙室
(5)の蓋で、この蓋は取り外しの可能なものである。In addition, (O) shown in FIG. 2 is a mounting port of the burner (B), and (P 1 ) and (P 2 ) shown in FIG. 2 and FIG.
Are pipes for vapor outflow and pipes for introducing absorption liquid, respectively. Further, (F) shown in FIGS. 2 and 4 is a lid of the smoke chamber (5), and this lid is removable.
上述のような構成の発生器(以下、本発生器という)に
おいては、その加熱時、煙道(3)を流れる燃焼ガスが
案内板(21),(22),(23),(24),(25)によっ
て煙道(3)内において下流側ほど下部に流れる。この
ため、従来装置では熱交換があまりなされなかった部
分、つまり前記煙道(3)内下流側の溶液管(4)下部
での熱交換量が多くなる。よって、煙道(3)下流側の
溶液管(4)下部から吸収液への加熱がなされるので、
吸収液が沸騰して生ずる蒸気の気泡と共に吸収液は溶液
管(4)内の下部から上部へ移動し、これら通路と溶液
流通部(16),(17)とで形成された溶液貯留部内を吸
収液は対流しつつ撹拌される。その結界、上記溶液貯留
部内における吸収液の臭化リチウム濃度の均一化が促進
される。In the generator configured as described above (hereinafter referred to as the present generator), the combustion gas flowing through the flue (3) during heating is guided by the guide plates (21), (22), (23), (24). , (25), the lower part of the flue (3) flows downward. For this reason, the amount of heat exchange increases in the portion where heat exchange is not performed so much in the conventional device, that is, in the lower portion of the solution pipe (4) on the downstream side in the flue (3). Therefore, since the lower part of the solution pipe (4) on the downstream side of the flue (3) is heated to the absorbing liquid,
The absorption liquid moves from the lower part to the upper part in the solution pipe (4) together with the bubbles of vapor generated by boiling of the absorption liquid, and moves in the solution storage part formed by these passages and the solution flow parts (16) and (17). The absorption liquid is agitated while convection. As a result, the uniformization of the lithium bromide concentration of the absorbing solution in the solution storage section is promoted.
なお、本発明の実施例では煙道が炉の上方に形成されて
いるタイプの発生器について説明してきたが、この例か
ら炉の延長上に煙道が形成されているタイプの発生器に
ついても適用できることは勿論である。Although the embodiment of the present invention has described the type of generator in which the flue is formed above the furnace, this example also applies to the type of generator in which the flue is formed on the extension of the furnace. Of course, it can be applied.
(ト) 発明の効果 本発明は以上の如くであり、煙道内の燃焼ガスが案内板
によって下流側ほど煙道下部に流れるので、煙道下流側
は溶液管内の吸収液が下部から加熱され、そして対流し
撹拌される。このため、吸収液の濃度の偏りが軽減され
てこの偏りによるイオンの移動、換言すれば、微弱電流
の発生が抑制され、微弱電流の作用による溶液管などの
構造部材の腐食が緩和される。特に、溶液管の開口周縁
と煙道との溶接部が腐食すると応力腐食割れを生じやす
いので、この溶液部の腐食が緩和されることによって本
発生器の寿命が大幅に延びる。(G) Effect of the Invention The present invention is as described above. Since the combustion gas in the flue flows toward the lower part of the flue through the guide plate, the absorption liquid in the solution pipe is heated from the lower part of the flue on the downstream side. And it is convected and stirred. Therefore, the bias of the concentration of the absorbing liquid is reduced, the movement of ions due to the bias is suppressed, that is, the generation of the weak current is suppressed, and the corrosion of the structural members such as the solution pipe due to the action of the weak current is mitigated. In particular, stress corrosion cracking easily occurs when the welded portion between the opening peripheral edge of the solution tube and the flue corrodes, so that the corrosion of this solution portion is mitigated, and the life of the generator is greatly extended.
また、本発生器の加熱時、溶液流通部においても、上述
の溶液貯留部と同様に、吸収液は対流しつつ撹拌される
ので、その濃度はほぼ均一になる。Further, when the generator is heated, the absorbing liquid is agitated while convection in the solution flowing section as well as the solution storing section, so that the concentration thereof becomes substantially uniform.
そして、本発生器においては、その加熱時、吸収液は撹
拌されつつ円滑に流動するので、その停滞による局部過
熱や局部濃縮が防止され、吸収液の結晶も防止される。In this generator, during heating, the absorbing liquid flows smoothly while being agitated, so that local overheating and local concentration due to the stagnation are prevented, and crystallization of the absorbing liquid is also prevented.
第1図は本発明による吸収冷凍機用直焚発生器の一実施
例を示した要部切欠斜視図、第2図は第1図に示した発
生器を側面から見た横断面図、第3図は第2図に示した
発生器のX−X矢視の縦断面図、第4図は第2図に示し
た発生器のY−Y矢視の断面図である。 (1)……器胴、(2)……燃焼室、(3)……煙道、
(4)……溶液管、(R)……蒸気室、(11),(1
2),(13),(14),(15),(16),(17)……溶
液流通部、(21),(22),(23),(24),(25)…
…案内板。FIG. 1 is a cutaway perspective view of an essential part showing an embodiment of a direct-fired generator for an absorption refrigerator according to the present invention, and FIG. 2 is a lateral cross-sectional view of the generator shown in FIG. FIG. 3 is a longitudinal sectional view of the generator shown in FIG. 2 as seen in the direction of arrow XX, and FIG. 4 is a sectional view of the generator shown in FIG. 2 as seen in the direction of arrow YY. (1) …… Body, (2) …… Burning chamber, (3) …… Flue,
(4) …… Solution tube, (R) …… Steam chamber, (11), (1
2), (13), (14), (15), (16), (17) ... Solution flow section, (21), (22), (23), (24), (25) ...
…direction board.
Claims (1)
ぼ垂直に設けられた溶液管群を有する直焚発生器におい
て、前記煙道内の上流側ほど高さの低い案内板及び下流
側ほど高さの高い案内板を煙道の上部、かつ溶液管の間
に設けたことを特徴とする直焚発生器。1. A direct-fired generator having a combustion chamber, a flue, a solution flow section, and a solution pipe group provided substantially vertically to the flue, wherein a guide plate having a lower height toward the upstream side in the flue and a downstream side. A direct-fired generator characterized in that a guide plate whose height is higher toward the side is provided above the flue and between the solution pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14570387A JPH0754219B2 (en) | 1987-06-11 | 1987-06-11 | Direct-fired generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14570387A JPH0754219B2 (en) | 1987-06-11 | 1987-06-11 | Direct-fired generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63311059A JPS63311059A (en) | 1988-12-19 |
| JPH0754219B2 true JPH0754219B2 (en) | 1995-06-07 |
Family
ID=15391161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14570387A Expired - Fee Related JPH0754219B2 (en) | 1987-06-11 | 1987-06-11 | Direct-fired generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0754219B2 (en) |
-
1987
- 1987-06-11 JP JP14570387A patent/JPH0754219B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63311059A (en) | 1988-12-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |