JP3080748B2 - Absorption refrigerator - Google Patents
Absorption refrigeratorInfo
- Publication number
- JP3080748B2 JP3080748B2 JP04006444A JP644492A JP3080748B2 JP 3080748 B2 JP3080748 B2 JP 3080748B2 JP 04006444 A JP04006444 A JP 04006444A JP 644492 A JP644492 A JP 644492A JP 3080748 B2 JP3080748 B2 JP 3080748B2
- Authority
- JP
- Japan
- Prior art keywords
- solution
- ejector
- regenerator
- absorber
- pressure
- 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
- Sorption Type Refrigeration Machines (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は空気調和、プロセス用そ
の他の用途に利用される吸収冷凍機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption refrigerator used for air conditioning, processing and other uses.
【０００２】[0002]
【従来の技術】従来の吸収冷凍機のフロー図を図３に示
す。図示のように従来の吸収冷凍機では再生器（また
は、低圧再生器）１から出て、溶液熱交換器（または、
低温側溶液熱交換器）２を介して、吸収器４へ戻る濃溶
液ライン１０には、吸収器４から出て、吸収器溶液ポン
プ９により昇圧された希溶液により駆動される主エジェ
クター８を一つ備えているのが普通であった。なお、図
中、１１は蒸発希、１２は冷媒ポンプである。2. Description of the Related Art FIG. 3 shows a flow chart of a conventional absorption refrigerator. As shown in the drawing, in a conventional absorption refrigerator, a solution heat exchanger (or a low-pressure regenerator) exits from a regenerator (or a low-pressure regenerator) 1.
A concentrated ejector line 10 returning to the absorber 4 via the low-temperature side solution heat exchanger 2 is provided with a main ejector 8 which is driven out of the absorber 4 and is driven by the diluted solution pressurized by the absorber solution pump 9. It was normal to have one. In the figure, reference numeral 11 denotes an evaporation rare, and 12 denotes a refrigerant pump.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の吸収冷凍機
には解決すべき次の課題があった。The above conventional absorption refrigerator has the following problems to be solved.
【０００４】即ち、再生器（または、低圧再生器）１か
ら出た濃溶液は、溶液熱交換器（または、低温側溶液熱
交換器）２を通る間に圧力損失を生じ、圧力低下を来
す。このため、濃溶液の吸収器４への戻りを維持するた
めに、希溶液で駆動する主エジェクター８を備えている
が、溶液熱交換器（又は、低温側溶液熱交換器）２を出
た濃溶液の状態は、飽和状態に近く、主エジェクター８
のノズルの下流では、静圧が低下し、フラッシュを生じ
易くなる。このため、大きな騒音を発生する問題があっ
た。That is, the concentrated solution discharged from the regenerator (or low-pressure regenerator) 1 generates a pressure loss while passing through the solution heat exchanger (or low-temperature solution heat exchanger) 2, causing a pressure drop. You. For this reason, in order to maintain the return of the concentrated solution to the absorber 4, a main ejector 8 driven by a dilute solution is provided, but has exited the solution heat exchanger (or the low-temperature solution heat exchanger) 2. The state of the concentrated solution is almost saturated, and the main ejector 8
Downstream of the nozzle, the static pressure is reduced, and flushing is likely to occur. For this reason, there was a problem of generating loud noise.
【０００５】本発明は上記問題解決のため、エジェクタ
ー（主エジェクター）の上流側又は下流側に補助エジェ
クターを追加し、濃溶液の昇圧を２段階で行なう構成と
した吸収冷凍機を提供することを目的とする。[0005] The present invention provides an absorption refrigerator in which an auxiliary ejector is added upstream or downstream of an ejector (main ejector) in order to solve the above-mentioned problem, and the concentrated solution is pressurized in two stages. Aim.
【０００６】[0006]
【課題を解決するための手段】本発明は上記課題の解決
手段として、吸収器、蒸発器、再生器、溶液熱交換器、
溶液ポンプ、冷媒ポンプ、配管を有し再生器から出て溶
液熱交換器を介し吸収器へ戻る濃溶液ラインに溶液ポン
プで昇圧された溶液でこの戻りの濃溶液を昇圧するエジ
ェクターを備えた吸収冷凍機において、上記エジェクタ
ーの上流側又は下流側の何れかに補助エジェクターを具
備してなることを特徴とする吸収冷凍機を提供しようと
するものである。According to the present invention, an absorber, an evaporator, a regenerator, a solution heat exchanger,
Absorption equipped with a solution pump, a refrigerant pump, and an ejector that pressurizes the returned concentrated solution with the solution pumped up by the solution pump in the concentrated solution line that goes out of the regenerator and returns to the absorber via the solution heat exchanger with a pipe. An object of the present invention is to provide an absorption refrigerator in which an auxiliary ejector is provided on either the upstream side or the downstream side of the ejector.
【０００７】なお、当然のことながらここに再生器は、
低圧、高圧何れの再生器をも含み、溶液熱交換器は低温
側、高温側何れの溶液熱交換器をも含むものである。[0007] Naturally, the regenerator here is
The solution heat exchanger includes both low-pressure and high-pressure regenerators, and the solution heat exchanger includes both a low-temperature side and a high-temperature side solution heat exchanger.
【０００８】また、エジェクター、補助エジェクターは
互いに同一性能であってもよい。The ejector and the auxiliary ejector may have the same performance.
【０００９】[0009]
【作用】本発明は上記のように構成されるので次の作用
を有する。The present invention is configured as described above and has the following effects.
【００１０】即ち、吸収冷凍機の再生器から溶液熱交換
器を介し、吸収器へ接続される濃溶液ラインに、稀溶液
で駆動されるエジェクターと補助エジェクターとが介装
されるため、濃溶液が２段階で昇圧される。これによ
り、エジェクターと補助エジェクターの各１段当りの昇
圧量は小さくできるので、エジェクターと補助エジェク
ターの所要駆動圧力はそれぞれの昇圧量に応じ、小さく
できる。That is, since the ejector driven by the dilute solution and the auxiliary ejector are interposed in the concentrated solution line connected from the regenerator of the absorption refrigerator to the absorber via the solution heat exchanger, the concentrated solution Is boosted in two stages. Thus, the boosting amount of each stage of the ejector and the auxiliary ejector can be reduced, so that the required driving pressure of the ejector and the auxiliary ejector can be reduced according to the respective boosting amounts.
【００１１】この結果、エジェクターと補助エジェクタ
ーで吸引される時の濃溶液の静圧低下量は小さくなるこ
とから、エジェクターまたは補助エジェクターの下流部
で冷媒蒸気が吸収溶液からフラッシュするのを抑えるこ
とができ、相応してフラッシュによる騒音レベルも小さ
く抑えられる。As a result, the amount of decrease in the static pressure of the concentrated solution when sucked by the ejector and the auxiliary ejector is reduced, so that it is possible to suppress the refrigerant vapor from flashing from the absorbing solution downstream of the ejector or the auxiliary ejector. And the noise level from the flash can be reduced accordingly.
【００１２】[0012]
【実施例】本発明の第１、第２実施例を図１、図２によ
り説明する。なお、従来例ないしは先の実施例と同様の
構成品には同符号を付し、必要ある場合を除き、説明を
省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS First and second embodiments of the present invention will be described with reference to FIGS. The same components as those in the conventional example or the previous embodiment are denoted by the same reference numerals, and description thereof will be omitted unless necessary.
【００１３】先ず、第１実施例を図１により説明する。
図１は第１実施例に係る二重効用吸収冷凍機のフロー図
で、図において、濃溶液ライン１０の主エジェクター８
の上流側には補助エジェクター３が介装されている。な
お、補助エジェクター３は再生器溶液ポンプ５の下流側
とも配管で連通されている。その他の構成は従来例と同
様である。First, a first embodiment will be described with reference to FIG.
FIG. 1 is a flow chart of the double effect absorption refrigerator according to the first embodiment, in which the main ejector 8 of the concentrated solution line 10 is shown.
An auxiliary ejector 3 is interposed on the upstream side of. The auxiliary ejector 3 is also connected to the downstream side of the regenerator solution pump 5 by piping. Other configurations are the same as the conventional example.
【００１４】次に上記構成の作用について説明する。Next, the operation of the above configuration will be described.
【００１５】図１において、再生器１（低圧再生器）を
出た濃溶液は、溶液熱交換器２（低温側溶液熱交換器）
を通って補助エジェクター３に達する。一方、吸収器４
から再生器溶液ポンプ５により昇圧された、稀溶液の一
部は、高圧再生器６への稀溶液ライン７から分かれて、
補助エジェクター３へ達する。稀溶液で吸引された濃溶
液は、稀溶液と一緒になって混合溶液となり主エジェク
ター８へ達する。一方、吸収器４から出て吸収器溶液ポ
ンプ９により昇圧された稀溶液は、主エジェクター８に
達し、混合溶液を吸収して、第２の混合溶液となる。こ
の混合溶液は吸収器４の上部に送られ、伝熱管群の上に
散布され、周囲の冷媒蒸気を吸収して稀溶液となる。In FIG. 1, a concentrated solution that has exited a regenerator 1 (low-pressure regenerator) is supplied to a solution heat exchanger 2 (low-temperature solution heat exchanger).
To the auxiliary ejector 3. Meanwhile, absorber 4
A part of the dilute solution, which has been pressurized by the regenerator solution pump 5, is separated from the dilute solution line 7 to the high-pressure regenerator 6,
The auxiliary ejector 3 is reached. The concentrated solution sucked by the diluted solution becomes a mixed solution together with the diluted solution and reaches the main ejector 8. On the other hand, the diluted solution that has exited the absorber 4 and has been pressurized by the absorber solution pump 9 reaches the main ejector 8, absorbs the mixed solution, and becomes the second mixed solution. This mixed solution is sent to the upper part of the absorber 4, and is scattered over the heat transfer tube group, and absorbs the surrounding refrigerant vapor to become a dilute solution.
【００１６】以上の通り、濃溶液は補助エジェクター３
及び主エジェクター８の両方によって２段階に昇圧さ
れ、所要圧に達するので、補助エジェクター３及び主エ
ジェクター８のそれぞれにおける昇圧は小さく、相応し
て補助エジェクター３及び主エジェクター８で吸引され
るときの濃溶液の静圧低下量（差圧）はそれぞれ小さ
い。従って、それらの下流部における冷媒蒸気のフラッ
シュが抑制され、フラッシュによる騒音レベルが低減す
る。As described above, the concentrated solution is supplied to the auxiliary ejector 3
Since both the auxiliary ejector 3 and the main ejector 8 are pressurized in two stages to reach the required pressure, the pressure increase in each of the auxiliary ejector 3 and the main ejector 8 is small. The static pressure drop (differential pressure) of the solution is small. Therefore, the flash of the refrigerant vapor in those downstream portions is suppressed, and the noise level due to the flash is reduced.
【００１７】次に第２実施例を図２により説明する。図
２は第２実施例に係る一重効用吸収冷凍機のフロー図
で、図において、濃溶液ライン１０の主エジェクター８
の上流側には補助エジェクター３が介装され、かつ、主
エジェクター８及び補助エジェクター３はそれぞれ再生
器溶液ポンプ５の下流側と配管で連通されている。その
他の構成は第１実施例から高圧再生器６の系及び吸収器
溶液ポンプ９を除いた構成と同様である。Next, a second embodiment will be described with reference to FIG. FIG. 2 is a flow chart of the single effect absorption refrigerator according to the second embodiment. In FIG. 2, the main ejector 8 of the concentrated solution line 10 is shown.
An auxiliary ejector 3 is interposed upstream of the regenerator solution pump 5, and the main ejector 8 and the auxiliary ejector 3 are respectively connected to the downstream side of the regenerator solution pump 5 by piping. Other configurations are the same as those of the first embodiment except for the system of the high-pressure regenerator 6 and the absorber solution pump 9.
【００１８】次に上記構成の作用について説明する。Next, the operation of the above configuration will be described.
【００１９】図２において、再生器１を出た濃溶液は溶
液熱交換器２を通って補助エジェクター３に達する。一
方、吸収器４を出て再生器溶液ポンプ５により昇圧され
た稀溶液の一部は再生器１への稀溶液ライン７から分か
れて、補助エジェクター３へ達する。稀溶液で吸引され
た濃溶液は稀溶液と一緒になって混合溶液となり、主エ
ジェクター８へ達する。稀溶液ライン７から分かれた別
の溶液は主エジェクター８に達し、上記混合溶液を吸収
して第２の混合溶液となる。この混合溶液は吸収器４の
上部に送られ、伝熱管群の上に散布され、周囲の冷媒蒸
気を吸収して稀溶液となる。In FIG. 2, the concentrated solution leaving the regenerator 1 passes through the solution heat exchanger 2 and reaches the auxiliary ejector 3. On the other hand, a part of the diluted solution that has exited the absorber 4 and has been pressurized by the regenerator solution pump 5 is separated from the diluted solution line 7 to the regenerator 1 and reaches the auxiliary ejector 3. The concentrated solution sucked by the diluted solution becomes a mixed solution together with the diluted solution, and reaches the main ejector 8. Another solution separated from the dilute solution line 7 reaches the main ejector 8 and absorbs the mixed solution to become a second mixed solution. This mixed solution is sent to the upper part of the absorber 4, and is scattered over the heat transfer tube group, and absorbs the surrounding refrigerant vapor to become a dilute solution.
【００２０】このようにして第２実施例の場合も、主エ
ジェクター８への稀溶液の昇圧を、再生器溶液ポンプ５
が吸収器溶液ポンプ９に取って代わるだけで、補助エジ
ェクター３及び主エジェクター８によって２段階昇圧を
行なう作用は第１実施例の場合と同様で、従って第１実
施例と同様の作用及び効果を果たす。なお、本実施例の
場合は吸収器溶液ポンプ９を必要としないという利点が
ある。As described above, also in the case of the second embodiment, the pressure of the dilute solution to the main ejector 8 is increased by the regenerator solution pump 5.
Only replaces the absorber solution pump 9, and the operation of performing the two-stage pressure increase by the auxiliary ejector 3 and the main ejector 8 is the same as that of the first embodiment. Therefore, the same operation and effect as the first embodiment are obtained. Fulfill. In this embodiment, there is an advantage that the absorber solution pump 9 is not required.
【００２１】以上の通り、第１、第２実施例によれば、
従来、濃溶液の昇圧を主エジェクター８のみで所要圧に
昇圧していたのに対し、補助エジェクター３及び主エジ
ェクター８で２段階に昇圧するので、１段当りの昇圧量
が小さく、相応して主エジェクター８、補助エジェクタ
ー３のそれぞれで吸引される際の濃溶液の静圧低下量が
小さくなって、フラッシュが生じにくく、従ってフラッ
シュによる騒音が著しく低減するという利点がある。As described above, according to the first and second embodiments,
Conventionally, the pressure of the concentrated solution was increased to a required pressure only by the main ejector 8, whereas the auxiliary ejector 3 and the main ejector 8 increased the pressure in two stages. There is an advantage that the amount of decrease in the static pressure of the concentrated solution when sucked by each of the main ejector 8 and the auxiliary ejector 3 becomes small, so that a flash does not easily occur, and therefore, noise due to the flash is significantly reduced.
【００２２】なお、第１、第２実施例では補助エジェク
ター３を主エジェクター８の上流側に介装したが、下流
側に介装されても勿論よい。また、主エジェクター８と
補助エジェクター３とが同仕様のエジェクターである場
合、上流、下流に各別の意味を有せず、かつ、直列に２
個連結されたエジェクターの構成も本発明の範囲に含ま
れることは云うまでもない。In the first and second embodiments, the auxiliary ejector 3 is provided on the upstream side of the main ejector 8, but may be provided on the downstream side. When the main ejector 8 and the auxiliary ejector 3 are ejectors having the same specifications, the upstream and downstream ejectors do not have different meanings, and two ejectors are connected in series.
It goes without saying that the configuration of the ejectors connected individually is also included in the scope of the present invention.
【００２３】[0023]
【発明の効果】本発明は上記のように構成されるので次
の効果を有する。The present invention has the following effects because it is configured as described above.
【００２４】即ち、冷凍機の再生器から溶液熱交換器を
介して吸収器に戻る濃溶液を、溶液ポンプで昇圧された
溶液で駆動されるエジェクター及び補助エジェクターの
２個のエジェクターにより２段階に昇圧することで各エ
ジェクター当りの静圧低下量を小さくし、これによって
溶液のフラッシュを抑え、フラッシュにより発生する騒
音を低減できる。That is, the concentrated solution returned from the regenerator of the refrigerator to the absorber via the solution heat exchanger is divided into two stages by an ejector driven by the solution pressurized by the solution pump and an auxiliary ejector. By increasing the pressure, the amount of decrease in static pressure per ejector is reduced, thereby suppressing the flushing of the solution and reducing the noise generated by the flushing.
【図１】本発明の第１実施例に係る二重効用吸収冷凍機
のフロー図、FIG. 1 is a flowchart of a double-effect absorption refrigerator according to a first embodiment of the present invention,
【図２】本発明の第２実施例に係る一重効用吸収冷凍機
のフロー図、FIG. 2 is a flow chart of a single-effect absorption refrigerator according to a second embodiment of the present invention;
【図３】従来の吸収冷凍機のフロー図である。FIG. 3 is a flowchart of a conventional absorption refrigerator.
１ 再生器（又は低圧再生器） ２ 溶液熱交換器（又は低温側溶液熱交換器） ３ 補助エジェクター ４ 吸収器 ５ 再生器溶液ポンプ ６ 高圧再生器 ７ 稀溶液ライン ８ 主エジェクター ９ 吸収器溶液ポンプ １０ 濃溶液ライン １１ 蒸発器 １２ 冷媒ポンプ Reference Signs List 1 regenerator (or low-pressure regenerator) 2 solution heat exchanger (or low-temperature solution heat exchanger) 3 auxiliary ejector 4 absorber 5 regenerator solution pump 6 high-pressure regenerator 7 dilute solution line 8 main ejector 9 absorber solution pump 10 Concentrated solution line 11 Evaporator 12 Refrigerant pump
───────────────────────────────────────────────────── フロントページの続き (72)発明者 川田 裕 兵庫県高砂市荒井町新浜二丁目１番１号 三菱重工業株式会社高砂研究所内 (56)参考文献 特開 昭54−59654（ＪＰ，Ａ) 特開 昭55−89663（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 41/00 F25B 15/00 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Kawada 2-1-1, Shinhama, Arai-machi, Takasago-shi, Hyogo Inside the Takasago Research Laboratory, Mitsubishi Heavy Industries, Ltd. (56) References JP 54-59654 (JP, A) 55-89663 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F25B 41/00 F25B 15/00
Claims (1)
器、溶液ポンプ、冷媒ポンプ、配管を有し再生器から出
て溶液熱交換器を介し吸収器へ戻る濃溶液ラインに溶液
ポンプで昇圧された溶液でこの戻りの濃溶液を昇圧する
エジェクターを備えた吸収冷凍機において、上記エジェ
クターの上流側又は下流側の何れかに補助エジェクター
を具備してなることを特徴とする吸収冷凍機。1. A concentrated solution line having an absorber, an evaporator, a regenerator, a solution heat exchanger, a solution pump, a refrigerant pump, a pipe, and having a pipe, exiting from the regenerator and returning to the absorber via the solution heat exchanger to the absorber. An absorption refrigerator comprising an ejector for increasing the pressure of the returned concentrated solution with the solution pressurized in step 1, wherein the absorption refrigerator comprises an auxiliary ejector on either the upstream side or the downstream side of the ejector. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04006444A JP3080748B2 (en) | 1992-01-17 | 1992-01-17 | Absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04006444A JP3080748B2 (en) | 1992-01-17 | 1992-01-17 | Absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05196323A JPH05196323A (en) | 1993-08-06 |
| JP3080748B2 true JP3080748B2 (en) | 2000-08-28 |
Family
ID=11638583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04006444A Expired - Fee Related JP3080748B2 (en) | 1992-01-17 | 1992-01-17 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3080748B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6385993B1 (en) * | 2000-08-03 | 2002-05-14 | Rocky Research | Multiple column generator for aqua-ammonia absorption system |
| JP2008516187A (en) * | 2004-10-13 | 2008-05-15 | ヨーク・インターナショナル・コーポレーション | Falling film evaporator |
-
1992
- 1992-01-17 JP JP04006444A patent/JP3080748B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05196323A (en) | 1993-08-06 |
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