JP2008232573A - Absorption refrigerating machine - Google Patents

Absorption refrigerating machine Download PDF

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JP2008232573A
JP2008232573A JP2007074846A JP2007074846A JP2008232573A JP 2008232573 A JP2008232573 A JP 2008232573A JP 2007074846 A JP2007074846 A JP 2007074846A JP 2007074846 A JP2007074846 A JP 2007074846A JP 2008232573 A JP2008232573 A JP 2008232573A
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absorbent
supply pipe
absorber
concentrated
refrigerant
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Ryuichiro Kawakami
▲隆▼一郎 川上
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Osaka Gas Co Ltd
大阪瓦斯株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems

Abstract

<P>PROBLEM TO BE SOLVED: To improve absorption performance by cooling a dense absorbent from a regenerator by a supercooling device and then supplying the absorbent to an absorber, and making the dense absorbent efficiently contribute to the absorption of a refrigerant. <P>SOLUTION: An absorbent circulating pipeline 26 in which a circulating pump 24 and the supercooling device 25 are interposed is connected to an absorber 5. A diluted absorbent supply pipe 28 is connected extending from the absorbent circulating pipeline 26 to the upside of the regenerator 1. A dense absorbent supply pipe 29 is connected to the lower part of the regenerator 1, and the dense absorbent supply pipe 29 is connected through an ejector 30 to a portion on the downstream side of a connecting part of the absorbent circulating pipeline 26 to the diluted absorbent supply pipe 28 and also on the upstream side from the supercooling device 25. A part of the diluted absorbent supplied by the power of the circulating pump 24 is supplied through the diluted absorbent supply pipe 28 to the regenerator 1, on the downstream side of it, the dense absorbent is mixed with the remaining diluted absorbent through the ejector 30, and the obtained absorbent is cooled by the supercooling device 25 and supplied to the absorber 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、再生器、凝縮器、蒸発器、吸収器とを備え、冷媒と吸収剤との混合溶液を用いるととともに、吸収器において吸収液を再循環させて外部の過冷却器により冷却する断熱方式を採用し、蒸発器で冷媒を蒸発冷却し、その冷却冷媒液により冷熱を取出すように構成した吸収冷凍機に関する。   The present invention includes a regenerator, a condenser, an evaporator, and an absorber, and uses a mixed solution of a refrigerant and an absorbent, and recycles the absorbing liquid in the absorber and cools it by an external supercooler. The present invention relates to an absorption refrigerator that employs an adiabatic method, evaporates and cools a refrigerant with an evaporator, and takes out cold heat using the cooled refrigerant liquid.
上述のような断熱方式の吸収器を用いた吸収冷凍機としては、従来、次のようなものが知られている。
すなわち、空冷吸収器の円筒状の伝熱器体中に蒸発器が一体に組み込んで構成され、再生器からの臭化リチウム濃溶液を上部空間側溶液散布トレイに導入し、その溶液散布トレイから伝熱器体の内壁面に液膜状態で流下させるとともに下部側液溜め部からの冷媒蒸気吸収後の臭化リチウム希溶液を溶液ポンプによりクロスフィン熱交換器構造よりなる空冷吸収液冷却器を介設した希溶液循環路(吸収液循環路)を通してスプレーノズルに導入した後、伝熱器体の上部空間側内壁面に霧状に吹き付けて上方から下方に緩やかに流下させ、各流下状態において蒸発器で蒸発し、エリミネータを介して拡散供給される冷媒蒸気を吸収させるようになっている(特許文献1参照)。
特開平10−122685号公報
Conventionally, absorption chillers using the above-described heat-insulating absorbers are known as follows.
That is, the evaporator is integrated into the cylindrical heat transfer body of the air-cooled absorber, and the lithium bromide concentrated solution from the regenerator is introduced into the upper space side solution spray tray, and the solution spray tray An air-cooled absorption liquid cooler having a cross-fin heat exchanger structure is used to cause the lithium bromide diluted solution after absorption of the refrigerant vapor from the lower side liquid reservoir to flow down to the inner wall surface of the heat transfer body and by a solution pump. After being introduced into the spray nozzle through the intervening dilute solution circulation path (absorbing liquid circulation path), it is sprayed onto the inner wall surface of the upper space side of the heat transfer body in a mist-like manner to gently flow downward from above, It evaporates with an evaporator and absorbs the refrigerant vapor diffused and supplied through an eliminator (see Patent Document 1).
Japanese Patent Laid-Open No. 10-122585
しかしながら、上述のように再生器からの臭化リチウム濃溶液(濃吸収液)を上部空間側溶液散布トレイに導入するものの場合、その濃吸収液を吸収器に直接供給しているために、その濃吸収液の温度が高く、冷媒蒸気の吸収性能が低い欠点があった。   However, in the case of introducing the lithium bromide concentrated solution (concentrated absorbent) from the regenerator into the upper space side solution spray tray as described above, since the concentrated absorbent is directly supplied to the absorber, There are drawbacks in that the temperature of the concentrated absorbent is high and the absorption performance of the refrigerant vapor is low.
本発明は、このような事情に鑑みてなされたものであって、請求項1に係る発明は、再生器からの濃吸収液を過冷却器で冷却してから吸収器に供給するとともに、再生器からの濃吸収液を効率良く冷媒の吸収に寄与させ、吸収性能を向上できるようにすることを目的とし、請求項2および請求項3に係る発明は、吸収性能をより良好に向上できるようにすることを目的とする。   The present invention has been made in view of such circumstances, and the invention according to claim 1 is that the concentrated absorbent from the regenerator is cooled by the subcooler and then supplied to the absorber, and the regeneration is performed. The invention according to claim 2 and claim 3 can improve the absorption performance more favorably, with the aim of allowing the concentrated absorbent from the vessel to efficiently contribute to the absorption of the refrigerant and improving the absorption performance. The purpose is to.
請求項1に係る発明は、上述のような目的を達成するために、
冷媒と吸収剤との混合溶液を加熱して冷媒蒸気を発生するとともに吸収剤の濃度が高い濃吸収液を分離する再生器と、前記再生器からの冷媒蒸気を凝縮する凝縮器と、前記凝縮器で凝縮された冷媒液を蒸発冷却して低温の冷媒液を発生する蒸発器と、前記蒸発器から冷熱を取出す冷熱取出し手段と、前記蒸発器内の冷媒液を蒸発冷却させて発生した冷媒蒸気を吸収液に吸収させる吸収器と、前記吸収器の下部から上部にわたって吸収液を再循環する吸収液循環配管に介装されて前記吸収器内に供給される吸収液を過冷却する過冷却器と、前記再生器で分離された濃吸収液を前記吸収器に供給する濃吸収液供給管と、前記吸収器で冷媒を吸収した吸収剤の濃度が低い希吸収液を前記再生器に供給する希吸収液供給管と備えた吸収冷凍機において、
前記吸収液循環配管に、前記吸収器と前記過冷却器との間に循環ポンプを介装するとともに、前記循環ポンプと前記過冷却器との間に前記希吸収液供給管を接続し、かつ、前記希吸収液供給管との接続箇所よりも下流側で前記過冷却器よりも上流側の箇所に、前記濃吸収液供給管からの濃吸収液を強制的に混合する濃吸収液混合手段を設けて構成する。
In order to achieve the above-described object, the invention according to claim 1
A regenerator that generates a refrigerant vapor by heating a mixed solution of the refrigerant and the absorbent and separates the concentrated absorbent having a high concentration of the absorbent, a condenser that condenses the refrigerant vapor from the regenerator, and the condensation An evaporator that evaporates and cools the refrigerant liquid condensed in the evaporator to generate a low-temperature refrigerant liquid, a cold-heat extraction means that extracts cold heat from the evaporator, and a refrigerant that is generated by evaporating and cooling the refrigerant liquid in the evaporator Supercooling that supercools the absorption liquid that is interposed in the absorber that absorbs the vapor into the absorption liquid and the absorption liquid circulation pipe that recirculates the absorption liquid from the lower part to the upper part of the absorber and that is supplied into the absorber , A concentrated absorbent supply pipe for supplying the concentrated absorbent separated by the regenerator to the absorber, and a rare absorbent having a low concentration of the absorbent that has absorbed the refrigerant in the absorber. In an absorption refrigerator equipped with a rare absorption liquid supply pipe
A circulation pump is interposed between the absorber and the supercooler in the absorption liquid circulation pipe, and the dilute absorption liquid supply pipe is connected between the circulation pump and the supercooler; and The concentrated absorbent mixing means for forcibly mixing the concentrated absorbent from the concentrated absorbent supply pipe at a location downstream of the connection with the diluted absorbent supply pipe and upstream of the supercooler. Is provided and configured.
(作用・効果)
請求項1に係る発明の吸収冷凍機の構成によれば、循環ポンプの動力によって吸収器から過冷却器に供給される希吸収液の一部を希吸収液供給管を介して再生器に供給し、その下流側で残部の希吸収液に濃吸収液供給管からの濃吸収液を混合し、その吸収液を過冷却器に供給して冷却してから吸収器に供給することができる。
したがって、再生器からの濃吸収液が希吸収液供給管側に流れてしまうことを回避しながら吸収器からの希吸収液に混合し、その吸収液を過冷却器に供給して冷却してから吸収器に供給するから、再生器からの濃吸収液を濃度の高い状態でかつ低温化して効率良く冷媒の吸収に寄与させることができ、吸収性能を向上できる。
(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 1, a part of the diluted absorbent supplied from the absorber to the supercooler by the power of the circulation pump is supplied to the regenerator through the diluted absorbent supply pipe. Then, the concentrated absorbent from the concentrated absorbent supply pipe can be mixed with the remaining diluted absorbent on the downstream side, and the absorbent can be supplied to the subcooler and cooled before being supplied to the absorber.
Therefore, while avoiding the concentrated absorption liquid from the regenerator from flowing to the rare absorption liquid supply pipe side, mix it with the rare absorption liquid from the absorber, supply the absorption liquid to the subcooler and cool it. Since the concentrated absorbent is supplied from the regenerator to the absorber, the concentrated absorbent from the regenerator can be reduced in temperature in a high concentration state and efficiently contribute to the absorption of the refrigerant, and the absorption performance can be improved.
請求項2に係る発明は、前述のような目的を達成するために、
請求項1に記載の吸収冷凍機において、
濃吸収液混合手段を、吸収液循環配管と濃吸収液供給管との間に、循環ポンプの背圧で前記濃吸収液供給管からの濃吸収液を吸い込むエジェクターを介装して構成する。
In order to achieve the above-described object, the invention according to claim 2
The absorption refrigerator according to claim 1,
The concentrated absorbent mixing means is configured by interposing an ejector that sucks in the concentrated absorbent from the concentrated absorbent supply pipe with the back pressure of the circulation pump between the absorbent circulation pipe and the concentrated absorbent supply pipe.
(作用・効果)
請求項2に係る発明の吸収冷凍機の構成によれば、一部を希吸収液供給管を介して再生器に供給した後の吸収器から過冷却器に供給される希吸収液に濃吸収液供給管からの濃吸収液をエジェクターによって混合して吸収液循環配管内に供給し、その吸収液を過冷却器に供給して冷却してから吸収器に供給することができる。
したがって、吸収液循環配管内に供給された濃吸収液の一部が、希吸収液供給管側に供給されてしまうことを良好に防止でき、より良好に吸収性能を向上できる。
(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 2, concentrated absorption is performed in the diluted absorbent supplied to the supercooler from the absorber after a part is supplied to the regenerator through the diluted absorbent supply pipe. The concentrated absorbent from the liquid supply pipe can be mixed by the ejector and supplied into the absorbent circulation pipe, and the absorbent can be supplied to the supercooler and cooled before being supplied to the absorber.
Accordingly, it is possible to satisfactorily prevent a part of the concentrated absorbent supplied into the absorbent circulation pipe from being supplied to the diluted absorbent supply pipe, and improve the absorption performance more favorably.
請求項3に係る発明は、前述のような目的を達成するために、
請求項1に記載の吸収冷凍機において、
濃吸収液混合手段が、濃吸収液供給管からの濃吸収液を吸収液循環配管に強制的に供給する濃吸収液ポンプを前記濃吸収液供給管に介装して構成する。
In order to achieve the above-described object, the invention according to claim 3
The absorption refrigerator according to claim 1,
The concentrated absorbent mixing means includes a concentrated absorbent pump that forcibly supplies the concentrated absorbent from the concentrated absorbent supply pipe to the absorbent circulation pipe.
(作用・効果)
請求項3に係る発明の吸収冷凍機の構成によれば、一部を希吸収液供給管を介して再生器に供給した後の吸収器から過冷却器に供給される希吸収液に濃吸収液供給管からの濃吸収液を濃吸収液供給管に介装した濃吸収液ポンプによって混合して吸収液循環配管内に供給し、その吸収液を過冷却器に供給して冷却してから吸収器に供給することができる。
したがって、吸収液循環配管内に供給された濃吸収液の一部が、希吸収液供給管側に供給されてしまうことを良好に防止でき、より良好に吸収性能を向上できる。
(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 3, concentrated absorption is performed in the diluted absorbent supplied to the supercooler from the absorber after a part is supplied to the regenerator through the diluted absorbent supply pipe. The concentrated absorbent from the liquid supply pipe is mixed by the concentrated absorbent pump interposed in the concentrated absorbent supply pipe and supplied to the absorbent circulation pipe, and then the absorbent is supplied to the subcooler and cooled. Can be supplied to the absorber.
Therefore, it is possible to satisfactorily prevent a part of the concentrated absorbent supplied into the absorbent circulation pipe from being supplied to the diluted absorbent supply pipe, and improve the absorption performance more favorably.
以上の説明から明らかなように、請求項1に係る発明の吸収冷凍機によれば、循環ポンプの動力によって吸収器から過冷却器に供給される希吸収液の一部を希吸収液供給管を介して再生器に供給し、その下流側で残部の希吸収液に濃吸収液供給管からの濃吸収液を混合し、その吸収液を過冷却器に供給して冷却してから吸収器に供給することができる。
したがって、再生器からの濃吸収液が希吸収液供給管側に流れてしまうことを回避しながら吸収器からの希吸収液に混合し、その吸収液を過冷却器に供給して冷却してから吸収器に供給するから、再生器からの濃吸収液を濃度の高い状態でかつ低温化して効率良く冷媒の吸収に寄与させることができ、吸収性能を向上できる。
As is apparent from the above description, according to the absorption refrigerator of the invention according to claim 1, a part of the rare absorbent supplied from the absorber to the supercooler by the power of the circulation pump is used as the rare absorbent supply pipe. The concentrated absorbent from the concentrated absorbent supply pipe is mixed with the remaining diluted absorbent on the downstream side thereof, and the absorbent is supplied to the subcooler and cooled before being absorbed by the absorber. Can be supplied.
Therefore, while avoiding the concentrated absorption liquid from the regenerator from flowing to the rare absorption liquid supply pipe side, mix it with the rare absorption liquid from the absorber, supply the absorption liquid to the subcooler and cool it. Since the concentrated absorbent is supplied from the regenerator to the absorber, the concentrated absorbent from the regenerator can be reduced in temperature in a high concentration state and efficiently contribute to the absorption of the refrigerant, and the absorption performance can be improved.
次に、本発明の実施例を図面に基づいて詳細に説明する。   Next, embodiments of the present invention will be described in detail with reference to the drawings.
図1は、本発明に係る吸収冷凍機の実施例1を示す全体概略構成図であり、ガスエンジン(図示せず)のエンジン冷却部からの排熱(エンジン冷却水)を加熱媒体として供給する再生器1内に、低圧下でエンジン冷却水(例えば、温度85℃)によって沸騰可能な水を冷媒とし、かつ、リチウムブロマイド溶液を吸収剤としたリチウムブロマイド水溶液(混合溶液)が収容され、混合溶液を加熱して冷媒蒸気を発生するとともに吸収剤の濃度が高い濃吸収液を分離するようになっている。   FIG. 1 is an overall schematic configuration diagram showing an embodiment 1 of an absorption refrigerator according to the present invention, and exhaust heat (engine cooling water) from an engine cooling unit of a gas engine (not shown) is supplied as a heating medium. In the regenerator 1, a lithium bromide aqueous solution (mixed solution) containing water that can be boiled by engine cooling water (for example, a temperature of 85 ° C.) under a low pressure as a refrigerant and a lithium bromide solution as an absorbent is contained and mixed. The solution is heated to generate refrigerant vapor, and a concentrated absorbent having a high absorbent concentration is separated.
再生器1には、吸収剤を分離した冷媒蒸気を供給するように凝縮器2が第1の配管3を介して連通接続され、再生器1に第2の配管4を介して吸収器5が接続されるとともに、凝縮器2に第3の配管6を介して蒸発器7が接続され、更に、吸収器5と蒸発器7とが冷媒蒸気の導入路を形成するエリミネータ8を介して連通接続され、吸収冷凍機が構成されている。   A condenser 2 is connected to the regenerator 1 through a first pipe 3 so as to supply refrigerant vapor from which the absorbent has been separated, and an absorber 5 is connected to the regenerator 1 through a second pipe 4. In addition to being connected, an evaporator 7 is connected to the condenser 2 via a third pipe 6, and the absorber 5 and the evaporator 7 are connected in communication via an eliminator 8 that forms a refrigerant vapor introduction path. Thus, an absorption refrigerator is configured.
凝縮器2は、再生器1からの冷媒蒸気を流すフィン付きの熱交換用パイプ9と、その熱交換用パイプ9に外気を供給するファン10と、液溜め11とから構成され、冷媒蒸気を空冷によって凝縮液化し、その液化した冷媒液を液溜め11に溜め、液化した冷媒液を蒸発器7に供給するようになっている。   The condenser 2 includes a heat exchange pipe 9 with fins through which refrigerant vapor from the regenerator 1 flows, a fan 10 that supplies outside air to the heat exchange pipe 9, and a liquid reservoir 11. The refrigerant liquid is condensed by air cooling, the liquefied refrigerant liquid is stored in the liquid reservoir 11, and the liquefied refrigerant liquid is supplied to the evaporator 7.
蒸発器7は、散布ノズル12を付設した冷媒液用液溜め部13と、冷媒液用液溜め部13から流下される冷媒液を分散させる分散板14とから構成されている。
蒸発器7の下部と冷媒液用液溜め部13とにわたって、冷媒ポンプ15および冷熱取出し用熱交換器16を介装した冷熱取出し用循環配管17が接続されている。
冷熱取出し用熱交換器16に、ガスヒートポンプ用の冷媒入口管18と冷媒出口管19とが接続され、吸収器5における吸収液による冷媒の吸収に伴って冷媒液を蒸発冷却し、その冷却冷媒液によってガスヒートポンプ用の冷媒を冷却するようになっている。上述の蒸発器7から冷熱を取出すための、溶液ポンプ15、冷熱取出し用熱交換器16、冷熱取出し用循環配管17、冷媒入口管18および冷媒出口管19から成る構成をして冷熱取出し手段と称する。
The evaporator 7 includes a refrigerant liquid reservoir 13 provided with a spray nozzle 12 and a dispersion plate 14 for dispersing the refrigerant liquid flowing down from the refrigerant liquid reservoir 13.
A cooling heat extraction circulation pipe 17 is connected across the lower portion of the evaporator 7 and the refrigerant liquid reservoir 13 with a refrigerant pump 15 and a cold heat extraction heat exchanger 16 interposed therebetween.
A refrigerant inlet pipe 18 and a refrigerant outlet pipe 19 for the gas heat pump are connected to the heat exchanger 16 for extracting cold heat, and the refrigerant liquid is evaporated and cooled along with the absorption of the refrigerant by the absorbing liquid in the absorber 5, and the cooling refrigerant The refrigerant for the gas heat pump is cooled by the liquid. A cold heat extraction means having a configuration comprising a solution pump 15, a cold heat extraction heat exchanger 16, a cold heat extraction circulation pipe 17, a refrigerant inlet pipe 18 and a refrigerant outlet pipe 19 for taking out the cold heat from the evaporator 7. Called.
吸収器5は、蒸発器7と一体構成の吸収器本体20の上部に吸収液散布手段21を備えて構成されている。吸収液散布手段21は、トレイ22の底面に吸収液散布孔(図示せず)を分散配備して構成されている。
トレイ22の上部に、スプレーノズル23が設けられ、そのスプレーノズル23と吸収器5の下部とが、循環ポンプ24と過冷却器25とを介装した吸収液循環配管26を介して接続され、吸収液を循環しながら過冷却し、吸収液に吸収させる冷媒量を増加し、更に、吸収液をトレイ22内に水平方向に分散して供給し、吸収液散布孔から液滴状態で滴下できるようになっている。27は、過冷却器25のファンを示している。
The absorber 5 includes an absorbing liquid spraying means 21 on an upper part of an absorber body 20 that is integrated with the evaporator 7. The absorbing liquid spraying means 21 is configured by dispersing and arranging absorbing liquid spraying holes (not shown) on the bottom surface of the tray 22.
A spray nozzle 23 is provided at the upper part of the tray 22, and the spray nozzle 23 and the lower part of the absorber 5 are connected via an absorption liquid circulation pipe 26 having a circulation pump 24 and a supercooler 25 interposed therebetween, The refrigerant is supercooled while circulating the absorption liquid, the amount of refrigerant absorbed by the absorption liquid is increased, and the absorption liquid can be supplied in the horizontal direction dispersed in the tray 22 and dropped from the absorption liquid spray hole in a droplet state. It is like that. Reference numeral 27 denotes a fan of the subcooler 25.
図示しないが、トレイ22において、吸収液散布孔が、エリミネータ8から導入される冷媒蒸気の流れ方向に密で流れ方向に直交する水平方向に疎な状態で分布するように分散して配備され、冷媒蒸気の流れを阻害せずに液滴との接触面積を大きくして吸収性能を向上できるように構成されている。   Although not shown, in the tray 22, the absorbing liquid spraying holes are distributed and arranged so as to be distributed in a sparse state in the horizontal direction perpendicular to the flow direction and dense in the flow direction of the refrigerant vapor introduced from the eliminator 8, The absorption performance can be improved by increasing the contact area with the droplets without hindering the flow of the refrigerant vapor.
吸収液循環配管26の循環ポンプ24と過冷却器25との間の箇所と再生器1の上部とにわたって希吸収液供給管28が接続されている。吸収液循環配管26の一部と希吸収液供給管28とによって第2の配管4が構成されている。
再生器1の下部に濃吸収液供給管29が接続され、その濃吸収液供給管29が、吸収液循環配管26の希吸収液供給管28との接続箇所よりも下流側で、かつ、過冷却器25よりも上流側の箇所に、濃吸収液混合手段としてのエジェクター30を介して接続されている。濃吸収液供給管29と希吸収液供給管28との間に熱交換器31が設けられ、再生器1に戻す希吸収液を、再生器1から吸収液循環配管26に供給する濃吸収液によって加熱するように、逆に言えば、濃吸収液を希吸収液によって冷却するようになっている。
A dilute absorbent supply pipe 28 is connected across the portion of the absorbent circulation pipe 26 between the circulation pump 24 and the subcooler 25 and the upper part of the regenerator 1. A second pipe 4 is constituted by a part of the absorbent circulation pipe 26 and the diluted absorbent supply pipe 28.
A concentrated absorbent supply pipe 29 is connected to the lower part of the regenerator 1, and the concentrated absorbent supply pipe 29 is located downstream of the connection position of the absorbent circulation pipe 26 with the diluted absorbent supply pipe 28 and is excessive. It is connected to a location upstream of the cooler 25 via an ejector 30 as a concentrated absorbent mixing means. A heat exchanger 31 is provided between the concentrated absorbent supply pipe 29 and the diluted absorbent supply pipe 28, and the concentrated absorbent that supplies the diluted absorbent returned to the regenerator 1 from the regenerator 1 to the absorbent circulation pipe 26. In other words, the concentrated absorbent is cooled by the diluted absorbent.
トレイ22の下方に鉛直方向に所定間隔を隔てて中間トレイ32が設けられている。中間トレイ32それぞれは、トレイ22と同様に構成され、中間トレイ32の底面には、散布孔(図示せず)が、トレイ22と同じ配置で、冷媒蒸気の流れ方向に密で流れ方向に直交する水平方向に疎な状態で分布するように分散して配備され、吸収液散布手段21から散布された液滴を中間トレイ32に受け留め、更に、その中間トレイ32の散布孔から液滴として落下させ、また、中間トレイ32から散布された液滴をその下方の中間トレイ32に受け留め、より下方の中間トレイ32に液滴として落下させていくようになっている。   An intermediate tray 32 is provided below the tray 22 at a predetermined interval in the vertical direction. Each of the intermediate trays 32 is configured in the same manner as the tray 22, and spray holes (not shown) are arranged on the bottom surface of the intermediate tray 32 in the same arrangement as the tray 22, and are dense in the refrigerant vapor flow direction and orthogonal to the flow direction. The liquid droplets are distributed and distributed so as to be distributed in a sparse state in the horizontal direction, and the liquid droplets sprayed from the absorbing liquid spraying means 21 are received by the intermediate tray 32. In addition, the liquid droplets dropped and scattered from the intermediate tray 32 are received by the intermediate tray 32 below and dropped as liquid droplets onto the intermediate tray 32 below.
再生器1は、再生器本体33内に、外面を伝熱面に形成した伝熱部材としての鉛直方向の伝熱面を有するプレート34を水平方向に並設し、プレート34の下部にエンジン冷却後のエンジン冷却水をプレート34内に供給する加熱媒体供給管35を接続し、一方、プレート34の上部に混合液との熱交換によって冷却されたエンジン冷却水をプレート34内から取り出す加熱媒体取り出し管36を接続して構成されている。   In the regenerator 1, a plate 34 having a heat transfer surface in a vertical direction as a heat transfer member having an outer surface formed as a heat transfer surface is provided in the regenerator body 33 in parallel in the horizontal direction, and engine cooling is performed below the plate 34. A heating medium supply pipe 35 for supplying the engine cooling water to the inside of the plate 34 is connected. On the other hand, an engine cooling water cooled by heat exchange with the mixed solution is taken out from the plate 34 to the upper part of the plate 34. The pipe 36 is connected.
上記実施例1の構成によれば、循環ポンプ24の動力によって吸収器5から過冷却器25に供給される希吸収液の一部を希吸収液供給管28を介して再生器1に供給し、その下流側で残部の希吸収液に濃吸収液供給管29からの濃吸収液をエジェクター30を介して循環ポンプ24の背圧によって混合し、その吸収液を過冷却器25に供給して冷却してから吸収器5に供給することができる。このため、再生器1からの濃吸収液が希吸収液供給管28側に流れてしまうことを回避しながら吸収器5からの希吸収液に混合し、その吸収液を過冷却器25に供給して冷却してから吸収器5に供給するから、再生器1からの濃吸収液を濃度の高い状態でかつ低温化して効率良く冷媒の吸収に寄与させることができ、吸収性能を向上できる。   According to the configuration of the first embodiment, a part of the rare absorbent supplied from the absorber 5 to the supercooler 25 by the power of the circulation pump 24 is supplied to the regenerator 1 through the rare absorbent supply pipe 28. On the downstream side, the remaining diluted absorbent is mixed with the concentrated absorbent from the concentrated absorbent supply pipe 29 by the back pressure of the circulation pump 24 through the ejector 30, and the absorbed liquid is supplied to the subcooler 25. It can supply to the absorber 5 after cooling. For this reason, the concentrated absorbent from the regenerator 1 is mixed with the diluted absorbent from the absorber 5 while avoiding flowing to the diluted absorbent supply pipe 28 side, and the absorbed liquid is supplied to the subcooler 25. Then, since it is cooled and then supplied to the absorber 5, the concentrated absorbent from the regenerator 1 can be reduced in temperature in a high concentration state to efficiently contribute to the absorption of the refrigerant, and the absorption performance can be improved.
図2は、本発明に係る吸収冷凍機の実施例2を示す全体概略構成図であり、実施例1と異なるところは次の通りである。
すなわち、濃吸収液混合手段として、エジェクター30に代えて、濃吸収液供給管29に濃吸収液ポンプ41が介装されている。他の構成は実施例1と同じであり、同一図番を付すことにより、その説明は省略する。
FIG. 2 is an overall schematic configuration diagram showing an absorption refrigerator according to a second embodiment of the present invention. The differences from the first embodiment are as follows.
That is, a concentrated absorbent pump 41 is interposed in the concentrated absorbent supply pipe 29 instead of the ejector 30 as the concentrated absorbent mixing means. Other configurations are the same as those of the first embodiment, and the description is omitted by giving the same reference numerals.
上記実施例2の構成によれば、循環ポンプ24の動力によって吸収器5から過冷却器25に供給される希吸収液の一部を希吸収液供給管28を介して再生器1に供給し、その下流側で残部の希吸収液に濃吸収液供給管29からの濃吸収液を濃吸収液ポンプ41を介して混合し、その吸収液を過冷却器25に供給して冷却してから吸収器5に供給することができる。このため、再生器1からの濃吸収液が希吸収液供給管28側に流れてしまうことを回避しながら吸収器5からの希吸収液に混合し、その吸収液を過冷却器25に供給して冷却してから吸収器5に供給するから、再生器1からの濃吸収液を濃度の高い状態でかつ低温化して効率良く冷媒の吸収に寄与させることができ、吸収性能を向上できる。   According to the configuration of the second embodiment, a part of the rare absorbent supplied from the absorber 5 to the supercooler 25 by the power of the circulation pump 24 is supplied to the regenerator 1 through the rare absorbent supply pipe 28. In the downstream side, the remaining diluted absorption liquid is mixed with the concentrated absorption liquid from the concentrated absorption liquid supply pipe 29 via the concentrated absorption liquid pump 41, and the absorption liquid is supplied to the subcooler 25 and cooled. It can be supplied to the absorber 5. For this reason, the concentrated absorbent from the regenerator 1 is mixed with the diluted absorbent from the absorber 5 while avoiding flowing to the diluted absorbent supply pipe 28 side, and the absorbed liquid is supplied to the subcooler 25. Then, since it is cooled and then supplied to the absorber 5, the concentrated absorbent from the regenerator 1 can be reduced in temperature in a high concentration state to efficiently contribute to the absorption of the refrigerant, and the absorption performance can be improved.
本発明に係る吸収冷凍機の実施例1を示す全体概略構成図である。It is a whole schematic block diagram which shows Example 1 of the absorption refrigerator which concerns on this invention. 本発明に係る吸収冷凍機の実施例2を示す全体概略構成図である。It is a whole schematic block diagram which shows Example 2 of the absorption refrigerator which concerns on this invention.
符号の説明Explanation of symbols
1…再生器
2…凝縮器
5…吸収器
7…蒸発器
15…冷媒ポンプ(冷熱取出し手段)
16…冷熱取出し用熱交換器(冷熱取出し手段)
17…冷熱取出し用循環配管(冷熱取出し手段)
18…冷媒入口管(冷熱取出し手段)
19…冷媒出口管(冷熱取出し手段)
24…循環ポンプ
25…過冷却器
26…吸収液循環配管
28…希吸収液供給管
29…濃吸収液供給管
30…エジェクター(濃吸収液混合手段)
41…濃吸収液ポンプ(濃吸収液混合手段)
DESCRIPTION OF SYMBOLS 1 ... Regenerator 2 ... Condenser 5 ... Absorber 7 ... Evaporator 15 ... Refrigerant pump (cold heat extraction means)
16 ... Heat exchanger for cold extraction (cold extraction means)
17 ... Cooling pipe for cooling / extraction (cooling / extracting means)
18 ... Refrigerant inlet pipe (cold heat extraction means)
19 ... Refrigerant outlet pipe (cold heat extraction means)
24 ... circulation pump 25 ... supercooler 26 ... absorption liquid circulation pipe 28 ... dilute absorption liquid supply pipe 29 ... concentrated absorption liquid supply pipe 30 ... ejector (concentrated absorption liquid mixing means)
41 ... Concentrated absorbent pump (concentrated absorbent mixing means)

Claims (3)

  1. 冷媒と吸収剤との混合溶液を加熱して冷媒蒸気を発生するとともに吸収剤の濃度が高い濃吸収液を分離する再生器と、前記再生器からの冷媒蒸気を凝縮する凝縮器と、前記凝縮器で凝縮された冷媒液を蒸発冷却して低温の冷媒液を発生する蒸発器と、前記蒸発器から冷熱を取出す冷熱取出し手段と、前記蒸発器内の冷媒液を蒸発冷却させて発生した冷媒蒸気を吸収液に吸収させる吸収器と、前記吸収器の下部から上部にわたって吸収液を再循環する吸収液循環配管に介装されて前記吸収器内に供給される吸収液を過冷却する過冷却器と、前記再生器で分離された濃吸収液を前記吸収器に供給する濃吸収液供給管と、前記吸収器で冷媒を吸収した吸収剤の濃度が低い希吸収液を前記再生器に供給する希吸収液供給管と備えた吸収冷凍機において、
    前記吸収液循環配管に、前記吸収器と前記過冷却器との間に循環ポンプを介装するとともに、前記循環ポンプと前記過冷却器との間に前記希吸収液供給管を接続し、かつ、前記希吸収液供給管との接続箇所よりも下流側で前記過冷却器よりも上流側の箇所に、前記濃吸収液供給管からの濃吸収液を強制的に混合する濃吸収液混合手段を設けてあることを特徴とする吸収冷凍機。
    A regenerator for heating a mixed solution of a refrigerant and an absorbent to generate refrigerant vapor and separating a concentrated absorbent having a high concentration of the absorbent, a condenser for condensing the refrigerant vapor from the regenerator, and the condensation An evaporator that evaporates and cools the refrigerant liquid condensed in the evaporator to generate a low-temperature refrigerant liquid, a cold-heat extraction means that extracts cold heat from the evaporator, and a refrigerant that is generated by evaporating and cooling the refrigerant liquid in the evaporator Supercooling that supercools the absorbing liquid that is interposed in the absorber that absorbs the vapor into the absorbing liquid and the absorbing liquid circulation pipe that recirculates the absorbing liquid from the lower part to the upper part of the absorber and that is supplied into the absorber , A concentrated absorbent supply pipe for supplying the concentrated absorbent separated by the regenerator to the absorber, and a rare absorbent having a low concentration of the absorbent that has absorbed the refrigerant in the absorber. In an absorption refrigerator equipped with a rare absorption liquid supply pipe
    A circulation pump is interposed between the absorber and the supercooler in the absorption liquid circulation pipe, and the dilute absorption liquid supply pipe is connected between the circulation pump and the supercooler; and The concentrated absorbent mixing means for forcibly mixing the concentrated absorbent from the concentrated absorbent supply pipe at a location downstream of the connection with the diluted absorbent supply pipe and upstream of the supercooler. The absorption refrigerator characterized by having provided.
  2. 請求項1に記載の吸収冷凍機において、
    濃吸収液混合手段が、吸収液循環配管と濃吸収液供給管との間に、循環ポンプの背圧で前記濃吸収液供給管からの濃吸収液を吸い込むエジェクターを介装したものである吸収冷凍機。
    The absorption refrigerator according to claim 1,
    Absorption in which the concentrated absorbent mixing means is provided with an ejector that sucks the concentrated absorbent from the concentrated absorbent supply pipe with the back pressure of the circulation pump between the absorbent circulation pipe and the concentrated absorbent supply pipe. refrigerator.
  3. 請求項1に記載の吸収冷凍機において、
    濃吸収液混合手段が、濃吸収液供給管からの濃吸収液を吸収液循環配管に強制的に供給する濃吸収液ポンプを前記濃吸収液供給管に介装したものである吸収冷凍機。
    The absorption refrigerator according to claim 1,
    An absorption refrigerator in which the concentrated absorbent mixing means is provided with a concentrated absorbent pump forcibly supplying the concentrated absorbent from the concentrated absorbent supply pipe to the absorbent circulation pipe.
JP2007074846A 2007-03-22 2007-03-22 Absorption refrigerating machine Pending JP2008232573A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107525301A (en) * 2017-08-18 2017-12-29 中原工学院 A kind of novel absorbent sprays composite refrigeration system

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JPS5390258A (en) * 1970-09-10 1978-08-08 Merck & Co Inc Phenylacetate derivative and process for preparing same
JPS54116762A (en) * 1979-01-26 1979-09-11 Sanyo Electric Co Ltd Absorption refrigerator
JPS54124359A (en) * 1978-03-20 1979-09-27 Kawasaki Heavy Ind Ltd Air-cooled absorption refrigerator to remove absorbed heat using absorption liquid for thermal medium
JPH02192547A (en) * 1989-01-17 1990-07-30 Osaka Gas Co Ltd Absorptive type cooler
JPH03129866A (en) * 1989-10-16 1991-06-03 Nec Kyushu Ltd Semiconductor device
JPH10122686A (en) * 1996-10-15 1998-05-15 Daikin Ind Ltd Air-cooled absorption refrigerating apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5390258A (en) * 1970-09-10 1978-08-08 Merck & Co Inc Phenylacetate derivative and process for preparing same
JPS54124359A (en) * 1978-03-20 1979-09-27 Kawasaki Heavy Ind Ltd Air-cooled absorption refrigerator to remove absorbed heat using absorption liquid for thermal medium
JPS54116762A (en) * 1979-01-26 1979-09-11 Sanyo Electric Co Ltd Absorption refrigerator
JPH02192547A (en) * 1989-01-17 1990-07-30 Osaka Gas Co Ltd Absorptive type cooler
JPH03129866A (en) * 1989-10-16 1991-06-03 Nec Kyushu Ltd Semiconductor device
JPH10122686A (en) * 1996-10-15 1998-05-15 Daikin Ind Ltd Air-cooled absorption refrigerating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107525301A (en) * 2017-08-18 2017-12-29 中原工学院 A kind of novel absorbent sprays composite refrigeration system

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