JP2698076B2 - Direct firing generator - Google Patents

Direct firing generator

Info

Publication number
JP2698076B2
JP2698076B2 JP16066287A JP16066287A JP2698076B2 JP 2698076 B2 JP2698076 B2 JP 2698076B2 JP 16066287 A JP16066287 A JP 16066287A JP 16066287 A JP16066287 A JP 16066287A JP 2698076 B2 JP2698076 B2 JP 2698076B2
Authority
JP
Japan
Prior art keywords
flue
solution
generator
fins
tube
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
Application number
JP16066287A
Other languages
Japanese (ja)
Other versions
JPS646661A (en
Inventor
雅裕 古川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP16066287A priority Critical patent/JP2698076B2/en
Publication of JPS646661A publication Critical patent/JPS646661A/en
Application granted granted Critical
Publication of JP2698076B2 publication Critical patent/JP2698076B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Sorption Type Refrigeration Machines (AREA)
  • Gas Separation By Absorption (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。 (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、更に煙道下流側の溶液管にフィンを設けて、
燃焼ガス温度の低い煙道下流側においても吸収液への加
熱量を煙道上流側と同程度確保するような発生器が公知
となっている。 (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
の燃焼ガスの大部分は煙道上部を通過するので、煙道下
流側の溶液管下部においては吸収液への加熱熱量が少く
なり、このため煙道下流側の吸収液管内では吸収液が一
様に流動せず、このため局部的な加熱による局部腐食、
あるいは吸収液の結晶を生じ易い等の問題点が生じてい
た。 本発明は、これらの問題点に鑑み、吸収液の結晶析出
の軽減と構造部材の腐食緩和とが可能な発生器の提供を
技術的課題とするものである。 (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ための手段とし
て、煙道内に溶液管群を縦方向に配列されてある直焚発
生器において、溶液管の上部におけるフィンの間隔が前
記液管の下部におけるフィンの間隔より密に設けたもの
である。 (ホ)作用 溶液管のフィンが設けられている部分は、燃焼ガスに
とってかなりの抵抗となる。よって、本発明の発生器に
おいては、その使用時に燃焼ガスの大部分はフィンが間
隔を密に設けられている部分よりも、フィンが間隔を疎
に設けられている部分を通過する。このため、従来装置
と異り、燃焼ガスは煙道下流側において煙道下部側を通
過し、煙道上流側における溶液管内の吸収液を下部側か
ら加熱する。 (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縦断面図である。また、第3図
は煙道要部拡大断面図、第4図は第2図に示した発生器
のX−X矢視の横断面図であり、第5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。 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(2)
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、千鳥目状に配備さ
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。 (7)は吸収液の導入口であり、(9)は吸収液の流
出口である。また、(8)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。 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。 また、第2図ないし第4図において、(11),(1
2),(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(1
6),(17)と連通していて吸収液の通路(18),(1
8)…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。(21)は溶液管(4)に設けられているフィン
で、第3図に示すように該フィン(21)は溶液管(4)
の上部ほど密に巻かれており、かつ、煙道(3)の下部
ほど疎に巻かれている。ここで、フィン付の溶液管とし
て、フィンの寸法分太い溶液管を加工してフィンが溶液
管と一体に形成されているものを用いてもよい。 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(F)はボルトによって着脱
可能なものである。 本発明の発生器の使用中において、燃焼ガスは煙道
(3)下流側では煙道(3)の下部側を通過する。この
ため、燃焼ガスは煙道(3)下流側では溶液への加熱を
煙道(3)下部側より行い、加熱によって生ずる蒸気の
気泡と共に吸収液は通路(18),(18),…内の下部か
ら上部へ流動し、これら通路(18),(18),…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。その結果、上記溶液貯留
部内における吸収液の濃度の均一化が促進される。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。 また、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撹拌されるので、その濃度はほ
ぼ均一になる。 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。 第6図は本発明における発生器の他の実施例を示す。
第6図は煙道要部拡大断面図である。この発生器の溶液
管(4)の下流側には上部側からフィン(21)が密に巻
かれており、このフィン(21)が密に巻かれている部分
(22)は煙道(3)下流側ほど長く設けられ、かつ、他
の溶液管(4)の部分にはフィン(21)が疎に巻かれて
いる。 また、第6図に示した発生器は、第1図から第5図に
示した前記実施例の発生器よりもその使用中において、
燃焼ガスを徐々に煙道下流下部に導く機能を有してい
る。 なお、本発明の実施例では煙道が燃焼室の上方に形成
されているタイプの発生器について説明してきたが、こ
の例から燃焼室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。 (ト)発明の効果 本発明は以上のとおりであり、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析出を軽減する効
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。
The present invention relates to a direct-fired generator, and more particularly to a direct-fired generator used in an absorption refrigerator (hereinafter, referred to as a generator). (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. 61-9317, a solution tube group through which an absorbent flows is used. It is installed vertically in the flue, and furthermore, fins are provided in the solution pipe on the downstream side of the flue,
A generator is known which ensures the same amount of heating to the absorption liquid on the downstream side of the flue where the temperature of the combustion gas is low than on the upstream side of the flue. (C) Problems to be solved by the invention However, in this type of conventional generator, most of the combustion gas from the burner passes through the upper part of the flue, so it is absorbed in the lower part of the solution pipe downstream of the flue. The amount of heat to be heated to the liquid is reduced, so that the absorbent does not flow uniformly in the absorbent pipe on the downstream side of the flue, so that local corrosion due to local heating,
Alternatively, there have been problems such as easy formation of crystals of the absorbing solution. In view of these problems, an object of the present invention is to provide a generator capable of reducing crystal precipitation of an absorbing solution and reducing corrosion of a structural member. (D) Means for Solving the Problems The present invention provides, as a means for solving the above-mentioned problems, a direct-fired generator in which a group of solution tubes is vertically arranged in a flue, The distance between the fins in the upper part is more dense than the distance between the fins in the lower part of the liquid tube. (E) Action The part of the solution tube where the fins are provided has considerable resistance to the combustion gas. Thus, in the generator of the present invention, during use, most of the combustion gas passes through the portions where the fins are provided more sparsely than the portion where the fins are provided more closely. For this reason, unlike the conventional apparatus, the combustion gas passes through the lower portion of the flue downstream of the flue, and heats the absorbing liquid in the solution pipe on the upstream side of the flue from the lower side. (F) Embodiment FIG. 1 is a cutaway perspective view of an essential part showing an embodiment of an absorption refrigerator generator according to the present invention, and FIG. 2 is a side view of the generator shown in FIG. It is a longitudinal cross-sectional view. 3 is an enlarged cross-sectional view of the main part of the flue, FIG. 4 is a cross-sectional view of the generator shown in FIG. 2 taken along the line XX, and FIG. 5 is a cross-sectional view of the generator shown in FIG. It is sectional drawing of the container taken along the line YY. In these figures, the same components are denoted by the same reference numerals. In FIG. 1, (1) is a generator body, in which a combustion chamber (2) is formed, and the combustion chamber (2) is formed.
A burner (B) is mounted on the body (1). (3) is a flue communicating with the rear of the combustion chamber (2) and formed above the flue. In this flue, a group of solution pipes (4), (4). They are arranged in a zigzag pattern. (5) is a smoke chamber communicating with the flue (3),
This chimney is equipped with a chimney (6). (7) is an absorption liquid inlet, and (9) is an absorption liquid outlet. (8) 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 and the flue (3), and the inner wall of the solution pipe (4), a liquid phase portion of the absorbing solution (aqueous lithium bromide) is provided. A vapor phase of the vapor is formed. In addition, (10) and (10) are mounts for mounting the body (1), and (R) is a steam chamber formed above the body (1). 2 to 4, (11), (1)
2), (13), (14), (15), (16), and (17) are solution flow sections as the liquid phase section, respectively. The solution pipes (4), (4)...
6), (17) and the passages (18), (1
8), and the flue (3) is formed with combustion gas passages (19), (19), and (20), (20). (21) are fins provided in the solution pipe (4), and as shown in FIG.
The lower part of the stack (3) is densely wound at the upper part of the stack. Here, as the solution tube with fins, a solution tube in which a fin is formed integrally with the solution tube by processing a solution tube thicker than the fin size may be used. Incidentally, (O) shown in FIG. 2 is a mounting port for the burner (B), and (P 1 ) and (P 1 ) shown in FIGS.
(P 2 ) is a tube for vapor outflow and a tube for absorption liquid introduction, respectively. (F) shown in FIGS. 2 and 4 is a lid of the smoke chamber (5), and the lid (F) is detachable by bolts. During use of the generator according to the invention, the combustion gases pass downstream of the flue (3) and below the flue (3). For this reason, the combustion gas heats the solution downstream of the flue (3) from the lower side of the flue (3), and the absorbent along with vapor bubbles generated by the heating passes through the passages (18), (18),. Flows from the lower part to the upper part, and the absorbing liquid is stirred while convectionally flowing in the solution storage part formed by these passages (18), (18),... And the solution circulation parts (16), (17). As a result, uniformization of the concentration of the absorbing solution in the solution storage section is promoted. For this reason, the concentration deviation in the solution storage portion is reduced, and the movement of ions due to this deviation, in other words, the generation of a weak current is suppressed, and the solution tube (4) caused by the action of the weak current.
Corrosion of the structural members such as is reduced. In particular, the corrosion of the weld between the periphery of the opening of the solution pipe (4) and the outer wall of the flue (3) tends to cause stress corrosion cracking. Extend to. In addition, solution circulation parts (11), (12), (13), (14),
Also in (15) and (17), as in the case of the above-mentioned solution storage section, the absorption liquid is stirred while convectionally flowing, so that the concentration becomes almost uniform. And in this generator, at the time of the heating, since the absorption liquid flows smoothly while being stirred, local overheating and local concentration due to stagnation are prevented, and crystallization of the absorption liquid is also prevented. FIG. 6 shows another embodiment of the generator according to the present invention.
FIG. 6 is an enlarged sectional view of a main part of the flue. Downstream of the solution tube (4) of this generator, fins (21) are tightly wound from the upper side, and the part (22) where the fins (21) are tightly wound is located in the flue (3). ) The longer the downstream side, the longer the fin (21) is sparsely wound around the other solution pipe (4). In addition, the generator shown in FIG. 6 is more in use than the generator of the embodiment shown in FIGS.
It has a function to gradually guide the combustion gas to the lower part of the flue downstream. In the embodiment of the present invention, the type in which the flue is formed above the combustion chamber has been described, but from this example, the type in which the flue is formed on the extension of the combustion chamber It goes without saying that the above can also be applied. (G) Effects of the Invention The present invention is as described above, and the present invention has an effect of promoting the uniformization of the concentration of the absorbing solution in the solution tube groups of the generator and the solution flowing section communicating with them. The effect of suppressing the generation of a weak current accompanying the deviation of the structure and reducing the corrosion of the structural members of the generator and the effect of reducing the crystal precipitation of the absorbing solution are provided as a durable generator. It is of high practical value.

【図面の簡単な説明】 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縦断面図、第3図は煙道要部拡大断
面図、第4図は第2図に示した発生器のX−X矢視の横
断面図、第5図は第2図に示した発生器のY−Y矢視の
断面図、第6図は本発明による発生器の他の実施例を示
した煙道要部拡大断面図である。 (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)……フィン、(22)……フィンが密に
巻かれている部分。
BRIEF DESCRIPTION OF THE DRAWINGS 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 side view of the generator shown in FIG. FIG. 3 is an enlarged cross-sectional view of a main part of the flue, FIG. 4 is a cross-sectional view of the generator shown in FIG. 2 taken along the line XX, and FIG. FIG. 6 is an enlarged sectional view of a main part of a flue showing another embodiment of the generator according to the present invention. (1) ... trunk, (2) ... combustion chamber, (3) ... flue,
(4) ... solution pipe, (R) ... steam chamber, (11), (1
2), (13), (14), (15), (16), (17): Solution flowing part, (21): Fin, (22): Part where fins are densely wound.

Claims (1)

(57)【特許請求の範囲】 1.胴内に煙道を横方向に配置し、かつ、煙道内に溶液
管群を縦方向に配列して溶液管内の吸収液を加熱濃縮す
る直焚発生器において、溶液管の上部におけるフィンの
間隔が前記液管の下部におけるフィンの間隔より密に設
けられてあることを特徴とする直焚発生器。
(57) [Claims] In a direct-fired generator that arranges the flue horizontally in the trunk and arranges the solution tubes in the flue vertically to heat and concentrate the absorbing solution in the solution tube, the spacing of the fins at the top of the solution tube Is provided more densely than the interval between the fins in the lower part of the liquid tube.
JP16066287A 1987-06-26 1987-06-26 Direct firing generator Expired - Fee Related JP2698076B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16066287A JP2698076B2 (en) 1987-06-26 1987-06-26 Direct firing generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16066287A JP2698076B2 (en) 1987-06-26 1987-06-26 Direct firing generator

Publications (2)

Publication Number Publication Date
JPS646661A JPS646661A (en) 1989-01-11
JP2698076B2 true JP2698076B2 (en) 1998-01-19

Family

ID=15719779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16066287A Expired - Fee Related JP2698076B2 (en) 1987-06-26 1987-06-26 Direct firing generator

Country Status (1)

Country Link
JP (1) JP2698076B2 (en)

Also Published As

Publication number Publication date
JPS646661A (en) 1989-01-11

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