JPH079320B2 - Direct-fired generator - Google Patents
Direct-fired generatorInfo
- Publication number
- JPH079320B2 JPH079320B2 JP12875187A JP12875187A JPH079320B2 JP H079320 B2 JPH079320 B2 JP H079320B2 JP 12875187 A JP12875187 A JP 12875187A JP 12875187 A JP12875187 A JP 12875187A JP H079320 B2 JPH079320 B2 JP H079320B2
- Authority
- JP
- Japan
- Prior art keywords
- solution
- generator
- flue
- furnace
- liquid
- 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 - Lifetime
Links
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- 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60-18746号公報にみら
れるように、燃焼ガスの通過する煙道内に吸収液の流通
する溶液管群を炉の後方に水平方向になるよう設けて吸
収液と熱交換を行う直焚発生器が公知となっている。(B) Conventional technology As a conventional technology of a generator used in a lithium bromide-water absorption refrigerator, for example, as shown in Japanese Utility Model Publication No. 60-18746, absorption is performed in a flue passage through which combustion gas passes. A direct-fired generator is known in which a solution pipe group through which a liquid flows is provided in the rear of the furnace in a horizontal direction to exchange heat with the absorbing liquid.
（ハ） 発明が解決しようとする問題点 しかし、溶液管群の下部はバーナーから離れており、こ
の溶液管群の下部に濃度の高い吸収液が溜まり易いの
で、吸収液が結晶し易いという問題が生じていた。(C) Problems to be solved by the invention However, since the lower part of the solution tube group is apart from the burner, and the high concentration of the absorbing solution tends to accumulate in the lower part of the solution tube group, the absorbing solution is likely to crystallize. Was occurring.
本発明は、これらの問題点に鑑み、吸収液が結晶しにく
い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 a technical problem to provide a generator in which an absorbing liquid is less likely to crystallize.
（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、発生器
の煙道を炉の後方と連通させて炉筒の上方に形成し、か
つ、煙道を囲む溶液貯留部としての溶液流通部に連通す
る溶液管群〔分路〕を煙道内に縦方向に備ており、更に
下流側の前記溶液管群にはひれが形成されてある構成と
したものである。(D) Means for Solving the Problems As a means for solving the above-mentioned problems, the present invention forms the flue of the generator with the rear of the furnace so as to communicate with the rear of the furnace, and forms the flue. A solution pipe group (shunt) communicating with the solution flow unit as a solution storage unit that surrounds is provided in the flue in the vertical direction, and a fin is formed in the solution pipe group on the further downstream side. It is a thing.
（ホ） 本発明の発生器は、煙道を炉の後方と連通させ
て炉筒の上方に形成し、かつ、煙道内の下流側の溶液管
群はひれ付管で形成されてあるので、その加熱時に温度
が低い燃焼ガスでも効率良く熱交換が行なわれると共
に、溶液管群内の吸収液は蒸気の気泡と共に下から上へ
移動しつつ溶液流通部内を対流して攪拌されるため、こ
れら管群内での吸収濃度の均一化の促進作用が発揮され
る。この作用により、溶液管群での吸収液濃度の偏りが
軽減されて微弱電流の発生も抑制されるので、発生器の
構造部材の腐食が緩和される。(E) In the generator of the present invention, since the flue is communicated with the rear of the furnace to be formed above the furnace tube, and the solution tube group on the downstream side in the flue is formed with the finned tube, Since the heat exchange is efficiently performed even with the combustion gas having a low temperature at the time of heating, the absorbing liquid in the solution tube group is stirred by convection in the solution flowing portion while moving from the bottom to the top together with the vapor bubbles. The effect of promoting uniform absorption concentration in the tube group is exhibited. Due to this action, the bias of the concentration of the absorbing liquid in the solution tube group is reduced and the generation of the weak current is also suppressed, so that the corrosion of the structural members of the generator is reduced.
かつまた、溶液管群の配備されている煙道が炉の上方に
配備されていて溶液貯留部の上方に溶液管群が位置する
ことになるので、発生器の加熱休止中に、重い吸収液す
なわち臭化リチウム濃度の高い吸収液が溶液管群内およ
び下部に滞留することも殆んどない。このため、溶液管
群内および下部で吸収液の結晶を生じることも殆んどな
い。Also, since the flue where the solution tube group is installed is located above the furnace and the solution tube group is located above the solution storage part, the heavy absorption liquid is not supplied during the heating suspension of the generator. That is, the absorbing solution having a high lithium bromide concentration hardly stays in the solution tube group and in the lower part thereof. Therefore, crystals of the absorbing liquid are hardly generated in the solution tube group and in the lower part thereof.
（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
胴内には炉（２）が形成され、この炉に臨ませてバーナ
ー（Ｂ）が器胴（１）に装備されている。（３）は炉
（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、この煙室には煙突（６）
が備えてある。尚、前記煙道（３）の下流側の前記溶液
管（４）には伝熱面積を広げるためにひれ（21）が備え
られている。In FIG. 1, (1) is a barrel of a generator, a furnace (2) is formed in the barrel, and a burner (B) is installed in the barrel (1) facing the furnace. ing. (3) is a flue that communicates with the rear of the furnace (2) and is formed above it. Solution pipes (4), (4) ... The groups are vertical and staggered. Have been deployed in a shape. (5) is a smoke chamber that communicates with the flue (3), and the smoke chamber has a chimney (6).
Is prepared. The solution pipe (4) on the downstream side of the flue (3) is provided with a fin (21) for expanding a heat transfer area.
（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）内壁と炉（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. Then, in the space surrounded by the inner wall of the vessel (1), the outer wall of the furnace (2), the outer wall of the flue (3) and the inner wall of the solution tube (4), the liquid phase part of the absorbing liquid [lithium bromide aqueous solution] and its A vapor phase portion of steam 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），（1
7）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), and (17) are solution flow sections as the liquid phase section, respectively. The inside of the solution pipes (4), (4) ...
7) to form passages (18), (18) for absorbing liquid, and for the flue (3), passages (19) for combustion gas,
(19) ... 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、この煙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 smoke 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）を流れる燃焼ガスの
熱により、溶液管（４），（４）…すなわち通路（1
8），（18）…内で吸収液〔臭化リチウム水溶液〕が沸
騰して蒸気が発生する。また、燃焼ガスの温度は煙道
（３）内の上流側では高く、煙道（３）の上流側で吸収
液との熱交換が行なわれているので下流側では燃焼ガス
の温度は低い。In the generator configured as described above (hereinafter referred to as the present generator), the solution pipes (4), (4), that is, the passage (1) are heated by the heat of the combustion gas flowing through the flue (3).
The absorbing liquid [lithium bromide aqueous solution] boils inside 8), (18), and vapor is generated. Further, the temperature of the combustion gas is high on the upstream side in the flue (3), and heat is exchanged with the absorbing liquid on the upstream side of the flue (3), so the temperature of the combustion gas is low on the downstream side.
しかし、煙道（３）下流側の溶液管（４）にはら線状の
ひれ（21）が形成されてあるので、煙道（３）上流側の
ひれが形成されていない溶液管（４）に比べて伝熱面積
が大きいので、熱効率が良い。従って、煙道（３）下流
側の吸収液は煙道（３）上流側の吸収液と同じぐらいに
交換熱量が大きくなる。However, since the fins (21) having a linear shape are formed on the solution pipe (4) on the downstream side of the flue (3), the solution pipe (4) on which the fins on the upstream side of the flue (3) are not formed. Since the heat transfer area is larger than that of, heat efficiency is good. Therefore, the amount of heat exchanged in the absorption liquid on the downstream side of the flue (3) is as large as that of the absorption liquid on the upstream side of the flue (3).
更に、溶液流通部（16）においても、バーナー（Ｂ）の
火炎および燃焼ガスの熱で吸収液が激しく沸騰して蒸気
が発生する。そして、発生した蒸気の気泡と共に吸収液
は通路（18），（18）…内の下部から上方へ移動し、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攪拌される。その結
果、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。また、このことは防錆剤とし
て吸収液に充填されているモリブデン酸リチウムの濃度
においても同様である。このため、上記溶液貯留部内に
おける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（４）などの構造部材の腐食が緩
和される。特に、溶液管（４）の開口周縁と煙道（３）
外壁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、この溶接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。Further, also in the solution flow section (16), the absorbing liquid vigorously boils due to the flame of the burner (B) and the heat of the combustion gas to generate steam. Then, the absorption liquid moves upward from the lower part of the passages (18), (18), etc. together with the generated bubbles of vapor, and inside the solution storage portion formed by these passages and the solution circulation portions (16), (17). The absorption liquid is agitated while convection. As a result, the homogenization of the lithium bromide concentration of the absorbing liquid in the solution storage section is promoted. This also applies to the concentration of lithium molybdate filled in the absorbing solution as a rust preventive. Therefore, the bias of the concentration in the solution storage section is reduced, the movement of ions due to this bias, in other words, the generation of a weak current is suppressed, and the corrosion of structural members such as the solution pipe (4) due to the action of the weak current is suppressed. Is alleviated. In particular, the periphery of the opening of the solution pipe (4) and the flue (3)
Corrosion of the welded portion with the outer wall easily causes stress corrosion cracking, and the corrosion of this welded portion is mitigated, whereby the life of the generator is significantly extended.
また、本発生器の加熱時、溶液流通部（11），（12），
（13），（14），（15），（17）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攪拌されるの
で、その濃度はほぼ均一になる。Also, when the generator is heated, the solution flow sections (11), (12),
Also in (13), (14), (15), and (17), as in the case of the solution storage section described above, the absorbing solution is agitated while convection, so that its concentration becomes substantially uniform.
そして、本発生器においては、その加熱時、吸収液は攪
拌されつつ円滑に流動するので、その停止滞による局部
加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 smoothly flows while being agitated, so that local heating and local concentration due to the suspension of the absorbing liquid are prevented, and crystallization of the absorbing liquid is also prevented.
また、通路（18），（18）…すなわち溶液管（４），
（４）…内の吸収液の濃度が本発生器の加熱時にほぼ均
一化されており、かつ、溶液管（４），（４）…内の吸
収液は器胴（１）内の液相部の上部に位置するので、本
発生器の加熱休止中に溶液管（４），（４）…で吸収液
の結晶を生じる確率は小さい。このため、本発生器の再
加熱時における吸収液の濃縮に著しい支障を来すおそれ
も少ない。尤も、液相部の最下部に位置する溶液流通部
（15）においては、本発生器の加熱休止中に冷えて重く
なった吸収液すなわち上層部よりやゝ濃度の高い吸収液
が存在しやすく、その結晶の確率が高いものの、この結
晶は加熱再開時のバーナー（Ｂ）の高温の火炎の熱で溶
解されやすいため、溶液管（４），（４）…内での加熱
休止中の結晶にくらべ、加熱再開時の支障は小さい。Further, the passages (18), (18), that is, the solution pipes (4),
The concentration of the absorbing liquid in (4) ... is almost uniform when the generator is heated, and the absorbing liquid in the solution tubes (4), (4) ... is the liquid phase in the body (1). Since it is located at the upper part of the section, the probability that crystal of the absorbing solution will be generated in the solution pipes (4), (4), etc. during the heating suspension of the generator is small. Therefore, it is unlikely that the concentration of the absorbing solution will be significantly hindered when the generator is reheated. However, in the solution flow section (15) located at the bottom of the liquid phase part, the absorption liquid that became cold and heavy during the rest of heating of the generator, that is, the absorption liquid with a slightly higher concentration than the upper layer, is likely to exist. Although the probability of the crystal is high, this crystal is easily melted by the heat of the high-temperature flame of the burner (B) when the heating is restarted, so the crystal in the solution tube (4), (4) ... Compared to the above, there is less trouble when resuming heating.
更に、溶液管（４）にひれがない場合は煙道（３）から
の燃焼ガス出口温度が260℃（熱効率約87.5％）であっ
て、下流側の溶液管（４）にひれ（21）が形成されてあ
る場合は前記燃焼ガス出口温度は180℃（熱効率約92
％）となり、同一燃焼量で吸収液への加熱量が約4.5％
増加するとの実験結果がでている。Furthermore, when there is no fin in the solution pipe (4), the temperature of the combustion gas outlet from the flue (3) is 260 ° C (thermal efficiency is about 87.5%), and the fin (21) in the downstream solution pipe (4). Is formed, the combustion gas outlet temperature is 180 ° C (thermal efficiency of about 92
%), And the heating amount to the absorption liquid is about 4.5% with the same combustion amount.
The experimental result is increasing.
（ト） 発明の効果 以上のとおり、本発明は、発生器の溶液管群およびこれ
らと連通する溶液流通部内の吸収液濃度の均一化の促進
効果をもたらし、これにより、濃度の偏りに伴なう微弱
電流の発生を抑えて発生器の構造部材の腐食を緩和する
効果と吸収液の結晶を軽減する効果とをもたらし、耐久
性のある発生器を提供し得るものとして実用的価値の高
いものである。(G) Effect of the Invention As described above, the present invention brings about an effect of promoting the homogenization of the concentration of the absorbing liquid in the solution tube group of the generator and the solution flow section communicating with these, and thereby, the concentration unevenness is accompanied. It has a high practical value as a material that can provide a durable generator by providing the effect of suppressing the generation of a weak current and mitigating the corrosion of the structural members of the generator and the effect of reducing the crystals of the absorbing liquid. Is.
更に、本発明の発生器には、溶液管群にひれが形成され
ているので熱効率が向上し、加えて前記ひれは煙管下流
側の溶液管群に形成されているので煙管上流側とほぼ同
様の吸収液への加熱量が確保でき、吸収液濃度の均一化
を促進する効果もある。Further, in the generator of the present invention, since fins are formed in the solution tube group, thermal efficiency is improved, and in addition, since the fins are formed in the solution tube group on the downstream side of the smoke tube, almost the same as the upstream side of the smoke tube. The amount of heating of the absorption liquid can be secured, and there is an effect of promoting uniformization of the concentration of the absorption liquid.
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）……炉、（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）……ひれ。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) …… Furnace, (3) …… Flue,
(4) …… Solution tube, (R) …… Steam chamber, (11), (1
2), (13), (14), (15), (16), (17) ... Solution flow section, (21) ... Fin.
Claims (1)
する直焚発生器において、その煙道が炉の後方と連通し
て炉の上方に形成され、かつ、前記溶液流通部と連通す
る溶液管群が煙道内に縦方向に配備されており、更に下
流側の溶液管はひれ付管で形成されてあることを特徴と
した直焚発生器。1. A direct-fired generator having a furnace, a flue, a solution flow section, and a solution tube group, the flue being formed above the furnace in communication with the rear of the furnace, and with the solution flow section. A direct-fired generator characterized in that a solution tube group communicating with each other is vertically arranged in the flue, and a solution tube on the further downstream side is formed by a fin tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12875187A JPH079320B2 (en) | 1987-05-26 | 1987-05-26 | Direct-fired generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12875187A JPH079320B2 (en) | 1987-05-26 | 1987-05-26 | Direct-fired generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63294467A JPS63294467A (en) | 1988-12-01 |
| JPH079320B2 true JPH079320B2 (en) | 1995-02-01 |
Family
ID=14992563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12875187A Expired - Lifetime JPH079320B2 (en) | 1987-05-26 | 1987-05-26 | Direct-fired generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079320B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2708840B2 (en) * | 1989-01-12 | 1998-02-04 | 三洋電機株式会社 | Direct firing generator |
| JPH02208463A (en) * | 1989-02-08 | 1990-08-20 | Sanyo Electric Co Ltd | Direct firing generator |
| JP3865325B2 (en) * | 1996-04-30 | 2007-01-10 | 東京瓦斯株式会社 | Absorption refrigerator |
-
1987
- 1987-05-26 JP JP12875187A patent/JPH079320B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63294467A (en) | 1988-12-01 |
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