JP2004271027A - Integrated heat exchanger for double-utility absorption refrigerator - Google Patents

Integrated heat exchanger for double-utility absorption refrigerator Download PDF

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Publication number
JP2004271027A
JP2004271027A JP2003061586A JP2003061586A JP2004271027A JP 2004271027 A JP2004271027 A JP 2004271027A JP 2003061586 A JP2003061586 A JP 2003061586A JP 2003061586 A JP2003061586 A JP 2003061586A JP 2004271027 A JP2004271027 A JP 2004271027A
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Prior art keywords
low
temperature regenerator
core
condenser
heat exchanger
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Japanese (ja)
Inventor
Taiji Sakai
耐事 坂井
Tsutomu Wada
努 和田
Iichiro Kawamura
威一郎 川村
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Toyo Radiator Co Ltd
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Toyo Radiator Co Ltd
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    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

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  • Sorption Type Refrigeration Machines (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an integrated heat exchanger capable of being miniaturized and reducing the cost by integrating a low-temperature regenerator and a condenser in a double-utility absorption refrigerator. <P>SOLUTION: In this double-utility absorption refrigerator utilizing high-temperature refrigerant vapor generated in a high-temperature regenerator for heating the low-temperature regenerator, the integrated heat exchanger 1 composed of the low-temperature regenerator and the condenser is used, elements 2c, 3c are formed by overlapping two plates of which both surfaces are made uneven, to each other, a plurality of elements 2c, 3c are overlapped to constitute a low-temperature regenerator core 2 and a condenser core 3, the low-temperature regenerator core 2 and the condenser core 3 are accommodated in one casing 5 in parallel with each other, and a space excluding an upper space of the casing 5 is partitioned into a low-temperature regenerator side and a condenser side by a partitioning plate 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、高温再生器で発生した高温冷媒蒸気を低温再生器の加熱に使用する二重効用吸収冷凍機における熱交換器に関する。
【０００２】
【従来の技術】
二重効用吸収冷凍機は、単効用吸収冷凍機の再生器（低温再生器）のほかにもう１基の再生器（高温再生器）を設け、高温再生器で稀吸収液を中間濃度吸収液まで濃縮し、このとき発生した高温冷媒蒸気を低温再生器に導いて中間濃度吸収液を加熱してさらに濃縮し濃吸収液に再生して吸収器に戻し、蒸気消費率の低下、その他成績係数（冷房能力／入熱量）の増加、入熱量の減少も図ったものである。
【０００３】
低温再生器で発生した蒸気は、凝縮器に回送され、低温再生器と凝縮器は別体に構成されている（例えば、特許文献１参照。）。
【０００４】
【特許文献１】
特開２００２−０６１９８２号公報
【０００５】
【発明が解決しようとする課題】
低温再生器と凝縮器が別置きにされることから、部品点数が多く、大型化し、コスト高であった。
【０００６】
本発明は、斯かる点に鑑みなされたもので、その目的とする処は、二重効用吸収冷凍機における低温再生器と凝縮器とを一体に構成してコンパクト化と低コスト化を図ることができる一体型熱交換器を供する点にある。
【０００７】
【課題を解決するための手段及び作用効果】
上記目的を達成するために、本請求項１記載の発明は、高温再生器で発生した高温冷媒蒸気を低温再生器の加熱に使用する二重効用吸収冷凍機において、前記低温再生器と凝縮器が組合された一体型熱交換器であって、両面に凹凸加工を施した２枚のプレートを互いに重ね合わせてエレメントを形成し同エレメントを複数重ね合わせて低温再生器コアと凝縮器コアが構成され、１ケーシング内に前記低温再生器コアと前記凝縮器コアが並んで収容され、同ケーシングの上方空間を除く空間が仕切板により低温再生器側と凝縮器側とに仕切られる二重効用吸収冷凍機の一体型熱交換器とした。
【０００８】
２枚のプレートを互いに重ね合わせたエレメントを複数重ね合わせて低温再生器コアと凝縮器コアを構成し、両コアを並べて１ケーシング内に収容し一体に組付けた一体型熱交換器であるので、部品点数が少なくコンパクト化とともに低コスト化を図ることができる。
【０００９】
請求項２記載の発明は、請求項１記載の二重効用吸収冷凍機の一体型熱交換器において、前記低温再生器コアと前記凝縮器コアを間に前記仕切板を介装して背中合せに重ねて前記ケーシング内に収容したことを特徴とする。
【００１０】
低温再生器コアと凝縮器コアとを仕切板で仕切って一体型熱交換器全体をコンパクトに構成することができる。
【００１１】
請求項３記載の発明は、請求項１記載の二重効用吸収冷凍機の一体型熱交換器において、前記低温再生器コアと前記凝縮器コアを間に前記仕切板を介装して横並びに配置して前記ケーシング内に収容したことを特徴とする。
【００１２】
低温再生器コアと凝縮器コアとを仕切板で仕切って一体型熱交換器全体をコンパクトに構成することができる。
【００１３】
請求項４記載の発明は、請求項１から請求項３までのいずれかの項記載の二重効用吸収冷凍機の一体型熱交換器において、前記低温再生器は、エレメント内に高温冷媒蒸気を通し、同エレメントに上から中間濃度吸収液を流下させる流下液膜式構造とすることを特徴とする。
【００１４】
吸収冷凍機の低温再生器を流下液膜式構造とすることで、沸騰熱伝達率を高く維持して再生効率を向上させることができる。
【００１５】
【発明の実施の形態】
以下本発明に係る一実施の形態について図１ないし図３に基づき説明する。
本実施の形態に係る二重効用吸収冷凍機１０の一体型熱交換器１について図１および図２に基づき説明する。
【００１６】
一体型熱交換器１は、二重効用吸収冷凍機１０の低温再生器と凝縮器を一体に構成した一体型熱交換器である。
【００１７】
両面に凹凸加工を施した２枚のステンレス製のプレート２ａ，２ｂを互いに重ね合せて再生器側エレメント２ｃを形成し、同様に両面に凹凸加工を施した２枚のステンレス製または銅製のプレート３ａ，３ｂを互いに重ね合せて凝縮器側エレメント３ｃを形成する。
【００１８】
そして再生器側エレメント２ｃをさらに複数平行に重ね合わせて各エレメント内部を互いに連通させて高温冷媒蒸気の通路とした低温再生器コア２を形成し、最外側のエレメント２ｃから冷媒蒸気供給管２ｄと冷媒蒸気排出管２ｅが延出している。
【００１９】
同様に凝縮器側エレメント３ｃを複数平行に重ね合わせて各エレメント内部を互いに連通させて冷却水の通路とした凝縮器コア３を形成し、最外側のエレメント３ｃから冷却水供給管３ｄと冷却水排出管３ｅが延出している。
【００２０】
このような低温再生器コア２と凝縮器コア３を、図２に示すように間に仕切板４を介装して背中合せに重ねてケーシング５内に収容され、位置決めされて、これらが一体に組み付けられる。
【００２１】
ケーシング５内は、上方空間５ａを除き仕切板４によって低温再生器側と凝縮器側とに仕切られ、ケーシング５外に冷媒蒸気供給管２ｄ，冷媒蒸気排出管２ｅ，冷却水供給管３ｄ，冷却水排出管３ｅが突出している。
【００２２】
このようにして低温再生器コア２，凝縮器コア３，仕切板４とケーシング５の組立体の仮の組付け工程後、これらはロウ付け工程に移され、各接触部がロウ付けされ、全体が堅固に結合されて多板式の一体型熱交換器１が製造される。
【００２３】
低温再生器コア２の上方には散布ノズル６が、ケーシング５を貫通して配設され、散布ノズル６には中間濃度吸収液が供給されて低温再生器コア２に上方から散布され、再生器側エレメント２ｃの外表面を流下する流下液膜式構造をなしている。
【００２４】
低温再生器コア２の下方のケーシング底部には、貯留した濃吸収液を排出する吸収溶液排出口２ｆが設けられている。
他方凝縮器コア３の下方のケーシング底部には、水蒸気が凝縮した凝縮液を排出する液冷媒排出口３ｆが設けられている。
【００２５】
以上のように本一体型熱交換器１は、低温再生器コア２と凝縮器コア３とを１ケーシング５内に収容して全体が堅固に結合されて一体に構成されているので、部品点数が少なくコンパクト化とともに低コスト化を図ることができる。
【００２６】
本一体型熱交換器１を組み込んだ二重効用吸収冷凍機１０による冷房サイクルフロー図を図３に示す。
吸収液（ＬｉＢｒ水溶液）が封入された吸収器１２で水分を吸収して薄くなった稀吸収液が、溶液ポンプ２０により低温溶液熱交換器２１および高温溶液熱交換器２２を経て高温再生器１１に送られ、高温再生器１１で熱源機１１ａによる加熱により稀吸収液から水分を追い出し中間濃度吸収液まで濃縮する。
【００２７】
このとき発生した高温冷媒蒸気を、本一体型熱交換器１の低温再生器コア２の冷媒蒸気供給管２ｄに導き再生器側エレメント２ｃ内に供給して加熱する。
一方、高温再生器１１で濃縮された中間濃度吸収液は、高温溶液熱交換器２２を経て散布ノズル６に供給され、低温再生器コア２に散布される。
【００２８】
したがって低温再生器コア２の再生器側エレメント２ｃの外表面を流下する中間濃度吸収液は、再生器側エレメント２ｃ内を通る高温冷媒蒸気により加熱されて効率良く水分を蒸発させてさらに濃縮され、濃縮された濃吸収液は吸収溶液排出口２ｆから排出される。
この濃吸収液は低温溶液熱交換器２１を経て吸収器１２に戻される。
【００２９】
低温再生器コア２で蒸発した水蒸気は、ケーシング５内の仕切板４を跨ぐ上方空間５ａを介して凝縮器コア３側に移動し、凝縮器コア３の凝縮器側エレメント３ｃ内には冷却水ポンプ２３によりクーリングタワー１４から吸収器１２を経由した冷却水が冷却水供給管３ｄを介して供給される。
【００３０】
したがって凝縮器コア３側に移動した水蒸気は、冷却水により凝縮器側エレメント３ｃの外表面で凝縮されて凝縮器コア３下方に溜まり、液冷媒排出口３ｆから排出され、膨張弁２４を介して蒸発器１３に送られる。
【００３１】
蒸発器１３は、室内機１５との間に冷温水ポンプ２５により冷水が循環する構成をなしており、吸収器１２中の吸収液が水分を吸収するに伴い連通する蒸発器１３内の水分は蒸発し、その蒸発の潜熱により水が冷却されて室内機１５に送られ冷房が行われる。
【００３２】
以上のように冷房サイクルフローに用いられた二重効用吸収冷凍機１０において、低温再生器と凝縮器とを一体化した一体型熱交換器１が適用される。
【００３３】
なお低温再生器は、上記のように再生器側エレメント２ｃの外表面を流下する流下液膜式構造とせずに、中間濃度吸収液で低温再生器コア２が完全に満たされる満液式または低温再生器コア２が半分満たされる半満液式の再生器としてもよい。
【００３４】
しかし前記実施の形態にある流下液膜式が、沸騰熱伝達率を高く維持でき再生効率が最も良い。
【００３５】
以上の一体型熱交換器１は、図２に示すように低温再生器コア２と凝縮器コア３を間に仕切板４を介装して背中合せに重ねてケーシング５内に収容される構造のものであったが、別の実施の形態に係る一体型熱交換器５１は、図４に示すように低温再生器コア５２と凝縮器コア５３を間に仕切板５４を介装して横並びに配置してケーシング内に収容する構造である。
【００３６】
低温再生器コア５２の再生器側エレメント５２ｃと凝縮器コア５３の凝縮器側エレメント５３ｃが仕切板５４を間に挟んで略一列に配列され、低温再生器コア５２の冷媒蒸気供給管５２ｄ，冷媒蒸気排出管５２ｅおよび凝縮器コア５３の冷却水供給管５３ｄ，冷却水排出管５３ｅは全て同一方向に突出している。
【００３７】
本一体型熱交換器５１の使用の仕方および作用効果は、前記一体型熱交換器１と全く同じであり、低温再生器コア５２と凝縮器コア５３とを仕切板５４で仕切って一体型熱交換器５１全体をコンパクトに構成することができる。
。
【００３８】
しかし両者は全体の形状が異なり、一体型熱交換器５１の方が若干偏平に構成することができ、また冷媒蒸気供給管５２ｄ，冷媒蒸気排出管５２ｅ，冷却水供給管５３ｄ，冷却水排出管５３ｅの突出方向も異なり、使用状況により使い分けることができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態に係る二重効用吸収冷凍機の一体型熱交換器の断面図である。
【図２】低温再生器コアと凝縮器コアの配置構造を示す斜視図である。
【図３】同二重効用吸収冷凍機による冷房サイクルフローを示す図である。
【図４】別の実施の形態に係る低温再生器コアと凝縮器コアの配置構造を示す斜視図である。
【符号の説明】
１…一体型熱交換器、
２…低温再生器コア、２ａ，２ｂ…プレート、２ｃ…再生器側エレメント、２ｄ…冷媒蒸気供給管、２ｅ…冷媒蒸気排出管、２ｆ…吸収溶液排出口、
３…凝縮器コア、３ａ，３ｂ…プレート、３ｃ…凝縮器側エレメント、３ｄ…冷却水供給管、３ｅ…冷却水排出管、３ｆ…液冷媒排出口、
４…仕切板、５…ケーシング、６…散布ノズル、１１…高温再生器、１１ａ…熱源機、１２…吸収器、１３…蒸発器、
１５…室内機、２０…溶液ポンプ、２１…低温溶液熱交換器、２２…高温溶液熱交換器、２３…冷却水ポンプ、２４…膨張弁、２５…冷温水ポンプ、
５１…一体型熱交換器、
５２…低温再生器コア、５２ｃ…再生器側エレメント、５２ｄ…冷媒蒸気供給管、５２ｅ…冷媒蒸気排出管、
５３…凝縮器コア、５３ｃ…凝縮器側エレメント、５３ｄ…冷却水供給管、５３ｅ…冷却水排出管、
５４…仕切板。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat exchanger in a double-effect absorption refrigerator that uses high-temperature refrigerant vapor generated in a high-temperature regenerator for heating a low-temperature regenerator.
[0002]
[Prior art]
The double-effect absorption refrigerator has another regenerator (high-temperature regenerator) in addition to the regenerator (low-temperature regenerator) of the single-effect absorption refrigerator. The high-temperature refrigerant vapor generated at this time is led to a low-temperature regenerator, where the intermediate-concentration absorbent is heated and further concentrated to regenerate into a concentrated absorbent and returned to the absorber, reducing the steam consumption rate and other coefficients of performance. (Cooling capacity / heat input) was also increased, and the heat input was also reduced.
[0003]
The steam generated in the low-temperature regenerator is sent to the condenser, and the low-temperature regenerator and the condenser are configured separately (for example, see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2002-061982
[Problems to be solved by the invention]
Since the low-temperature regenerator and the condenser are placed separately, the number of parts is large, the size is large, and the cost is high.
[0006]
The present invention has been made in view of such a point, and an object thereof is to configure a low-temperature regenerator and a condenser in a double-effect absorption refrigerator integrally to achieve compactness and cost reduction. The point is to provide an integrated heat exchanger that can be used.
[0007]
Means for Solving the Problems and Functions and Effects
In order to achieve the above object, the invention according to claim 1 is directed to a double-effect absorption refrigerator in which high-temperature refrigerant vapor generated in a high-temperature regenerator is used for heating a low-temperature regenerator. Is an integrated heat exchanger in which two plates, each of which has an uneven surface, are superimposed on each other to form an element, and a plurality of the elements are superposed to form a low-temperature regenerator core and a condenser core. And the low-temperature regenerator core and the condenser core are housed side by side in one casing, and a space other than an upper space of the casing is partitioned into a low-temperature regenerator side and a condenser side by a partition plate. An integrated heat exchanger for the refrigerator was used.
[0008]
A low-temperature regenerator core and a condenser core are formed by superposing a plurality of elements in which two plates are superimposed on each other, and both cores are arranged side by side and housed in a single casing and integrally assembled. In addition, the number of parts is small, and the size and cost can be reduced.
[0009]
According to a second aspect of the present invention, in the integrated heat exchanger of the double-effect absorption refrigerator according to the first aspect, the low-temperature regenerator core and the condenser core are interposed with the partition plate interposed therebetween to be back to back. It is characterized by being housed in the casing in an overlapping manner.
[0010]
By partitioning the low-temperature regenerator core and the condenser core with a partition plate, the entire integrated heat exchanger can be made compact.
[0011]
According to a third aspect of the present invention, in the integrated heat exchanger of the double effect absorption refrigerator according to the first aspect, the low-temperature regenerator core and the condenser core are arranged side by side with the partition plate interposed therebetween. It is characterized by being arranged and housed in the casing.
[0012]
By partitioning the low-temperature regenerator core and the condenser core with a partition plate, the entire integrated heat exchanger can be made compact.
[0013]
According to a fourth aspect of the present invention, in the integrated heat exchanger of the double effect absorption refrigerator according to any one of the first to third aspects, the low-temperature regenerator includes a high-temperature refrigerant vapor in an element. It is characterized in that it has a falling liquid film structure in which the intermediate concentration absorbing liquid flows down from above through the same element.
[0014]
When the low-temperature regenerator of the absorption refrigerator has a falling liquid film type structure, the boiling heat transfer coefficient can be maintained high and the regeneration efficiency can be improved.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment according to the present invention will be described below with reference to FIGS.
The integrated heat exchanger 1 of the double effect absorption refrigerator 10 according to the present embodiment will be described with reference to FIGS.
[0016]
The integrated heat exchanger 1 is an integrated heat exchanger in which the low-temperature regenerator and the condenser of the double-effect absorption refrigerator 10 are integrated.
[0017]
Two stainless steel plates 2a and 2b having both surfaces roughened are superimposed on each other to form a regenerator-side element 2c, and two stainless steel or copper plates 3a similarly roughened on both surfaces are formed. , 3b are superimposed on each other to form a condenser-side element 3c.
[0018]
Then, a plurality of regenerator-side elements 2c are further overlapped in parallel to form a low-temperature regenerator core 2 serving as a passage for high-temperature refrigerant vapor by connecting the insides of the respective elements to each other, and forming a refrigerant vapor supply pipe 2d from the outermost element 2c. A refrigerant vapor discharge pipe 2e extends.
[0019]
Similarly, a plurality of condenser-side elements 3c are overlapped in parallel to form a condenser core 3 serving as a cooling water passage by communicating the insides of the respective elements with each other. From the outermost element 3c, a cooling water supply pipe 3d and a cooling water The discharge pipe 3e extends.
[0020]
The low-temperature regenerator core 2 and the condenser core 3 are placed back to back with a partition plate 4 interposed therebetween as shown in FIG. Assembled.
[0021]
The inside of the casing 5 is divided into a low-temperature regenerator side and a condenser side by a partition plate 4 except for an upper space 5a, and outside the casing 5, a refrigerant vapor supply pipe 2d, a refrigerant vapor discharge pipe 2e, a cooling water supply pipe 3d, and a cooling water supply pipe. The water discharge pipe 3e protrudes.
[0022]
After the provisional assembly process of the assembly of the low-temperature regenerator core 2, the condenser core 3, the partition plate 4 and the casing 5 in this way, these are transferred to a brazing process, and the respective contact portions are brazed. Are firmly connected to produce a multi-plate integrated heat exchanger 1.
[0023]
A spray nozzle 6 is disposed above the low-temperature regenerator core 2 so as to penetrate the casing 5. The spray nozzle 6 is supplied with an intermediate-concentration absorbing liquid and sprayed onto the low-temperature regenerator core 2 from above. It has a falling liquid film structure that flows down the outer surface of the side element 2c.
[0024]
At the bottom of the casing below the low-temperature regenerator core 2, an absorbing solution outlet 2f for discharging the stored concentrated absorbing solution is provided.
On the other hand, at the bottom of the casing below the condenser core 3, a liquid refrigerant discharge port 3f for discharging a condensed liquid in which water vapor is condensed is provided.
[0025]
As described above, the integrated heat exchanger 1 has the low-temperature regenerator core 2 and the condenser core 3 housed in one casing 5 and is firmly connected as a whole to be integrally formed. Therefore, it is possible to reduce the size and cost as well as the size.
[0026]
FIG. 3 shows a cooling cycle flow chart of the double effect absorption refrigerator 10 incorporating the integrated heat exchanger 1.
The diluted absorbing liquid, which has become thinner by absorbing water in the absorber 12 in which the absorbing liquid (LiBr aqueous solution) is enclosed, is passed through the low-temperature solution heat exchanger 21 and the high-temperature solution heat exchanger 22 by the solution pump 20 and the high-temperature regenerator 11. And the high-temperature regenerator 11 removes moisture from the rare absorbing solution by heating by the heat source device 11a and concentrates it to the intermediate concentration absorbing solution.
[0027]
The high-temperature refrigerant vapor generated at this time is guided to the refrigerant vapor supply pipe 2d of the low-temperature regenerator core 2 of the integrated heat exchanger 1, and is supplied to the regenerator-side element 2c to be heated.
On the other hand, the intermediate-concentration absorbent concentrated in the high-temperature regenerator 11 is supplied to the spray nozzle 6 through the high-temperature solution heat exchanger 22 and is sprayed on the low-temperature regenerator core 2.
[0028]
Therefore, the intermediate-concentration absorbing liquid flowing down the outer surface of the regenerator-side element 2c of the low-temperature regenerator core 2 is heated by the high-temperature refrigerant vapor passing through the inside of the regenerator-side element 2c, evaporates moisture efficiently, and is further concentrated. The concentrated concentrated absorbing solution is discharged from the absorbing solution discharge port 2f.
This concentrated absorbent is returned to the absorber 12 via the low-temperature solution heat exchanger 21.
[0029]
The water vapor evaporated in the low-temperature regenerator core 2 moves to the condenser core 3 side via the upper space 5a straddling the partition plate 4 in the casing 5, and the cooling water is contained in the condenser-side element 3c of the condenser core 3. Pump 23 supplies cooling water from cooling tower 14 via absorber 12 via cooling water supply pipe 3d.
[0030]
Therefore, the water vapor that has moved to the condenser core 3 side is condensed by the cooling water on the outer surface of the condenser-side element 3 c and accumulates below the condenser core 3, is discharged from the liquid refrigerant discharge port 3 f, and passes through the expansion valve 24. It is sent to the evaporator 13.
[0031]
The evaporator 13 has a configuration in which chilled water is circulated between the evaporator 13 and the indoor unit 15 by a chilled / hot water pump 25. The water evaporates and is cooled by the latent heat of the evaporation and sent to the indoor unit 15 to be cooled.
[0032]
As described above, in the double effect absorption refrigerator 10 used in the cooling cycle flow, the integrated heat exchanger 1 in which the low-temperature regenerator and the condenser are integrated is applied.
[0033]
The low-temperature regenerator does not have a falling liquid film type structure in which the outer surface of the regenerator-side element 2c flows down as described above, but is a liquid-filled type or a low-temperature type in which the low-temperature regenerator core 2 is completely filled with the intermediate concentration absorbing liquid. It may be a semi-full regenerator in which the regenerator core 2 is half filled.
[0034]
However, the falling liquid film type in the above embodiment can maintain a high boiling heat transfer coefficient and has the best regeneration efficiency.
[0035]
The above integrated heat exchanger 1 has a structure in which a low-temperature regenerator core 2 and a condenser core 3 are stacked back to back with a partition plate 4 interposed therebetween and housed in a casing 5 as shown in FIG. However, as shown in FIG. 4, an integrated heat exchanger 51 according to another embodiment has a low-temperature regenerator core 52 and a condenser core 53 interposed with a partition plate 54 interposed therebetween and arranged side by side. It is a structure that is arranged and accommodated in the casing.
[0036]
The regenerator-side element 52c of the low-temperature regenerator core 52 and the condenser-side element 53c of the condenser core 53 are arranged substantially in a row with a partition plate 54 interposed therebetween. The steam discharge pipe 52e, the cooling water supply pipe 53d of the condenser core 53, and the cooling water discharge pipe 53e all project in the same direction.
[0037]
The manner of use and the function and effect of the integrated heat exchanger 51 are exactly the same as those of the integrated heat exchanger 1, and the low-temperature regenerator core 52 and the condenser core 53 are separated by a partition plate 54 to form an integrated heat exchanger. The entire exchanger 51 can be made compact.
.
[0038]
However, both have different overall shapes, and the integrated heat exchanger 51 can be configured to be slightly flatter. In addition, the refrigerant vapor supply pipe 52d, the refrigerant vapor discharge pipe 52e, the cooling water supply pipe 53d, and the cooling water discharge pipe The projecting direction of 53e is also different, and can be properly used depending on the use situation.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an integrated heat exchanger of a double-effect absorption refrigerator according to one embodiment of the present invention.
FIG. 2 is a perspective view showing an arrangement structure of a low-temperature regenerator core and a condenser core.
FIG. 3 is a diagram showing a cooling cycle flow by the double effect absorption refrigerator.
FIG. 4 is a perspective view showing an arrangement structure of a low-temperature regenerator core and a condenser core according to another embodiment.
[Explanation of symbols]
1… Integral heat exchanger,
2 ... low temperature regenerator core, 2a, 2b ... plate, 2c ... regenerator side element, 2d ... refrigerant vapor supply pipe, 2e ... refrigerant vapor discharge pipe, 2f ... absorption solution discharge port,
3 condenser core, 3a, 3b plate, 3c condenser element, 3d cooling water supply pipe, 3e cooling water discharge pipe, 3f liquid refrigerant discharge port,
DESCRIPTION OF SYMBOLS 4 ... Partition plate, 5 ... Casing, 6 ... Spray nozzle, 11 ... High temperature regenerator, 11a ... Heat source device, 12 ... Absorber, 13 ... Evaporator,
15 indoor unit, 20 solution pump, 21 low temperature solution heat exchanger, 22 high temperature solution heat exchanger, 23 cooling water pump, 24 expansion valve, 25 cold / hot water pump
51… Integral heat exchanger,
52: low temperature regenerator core, 52c: regenerator side element, 52d: refrigerant vapor supply pipe, 52e: refrigerant vapor discharge pipe,
53: condenser core, 53c: condenser side element, 53d: cooling water supply pipe, 53e: cooling water discharge pipe,
54 ... Partition plate.

Claims (4)

高温再生器で発生した高温冷媒蒸気を低温再生器の加熱に使用する二重効用吸収冷凍機において、
前記低温再生器と凝縮器が組合された一体型熱交換器であって、
両面に凹凸加工を施した２枚のプレートを互いに重ね合わせてエレメントを形成し同エレメントを複数重ね合わせて低温再生器コアと凝縮器コアが構成され、
１ケーシング内に前記低温再生器コアと前記凝縮器コアが並んで収容され、
同ケーシングの上方空間を除く空間が仕切板により低温再生器側と凝縮器側とに仕切られることを特徴とする二重効用吸収冷凍機の一体型熱交換器。In a double-effect absorption refrigerator that uses high-temperature refrigerant vapor generated by a high-temperature regenerator to heat a low-temperature regenerator,
An integrated heat exchanger in which the low-temperature regenerator and the condenser are combined,
A low-temperature regenerator core and a condenser core are formed by superimposing two plates having irregularities on both sides to form an element, and superposing a plurality of the same elements,
The low temperature regenerator core and the condenser core are housed side by side in one casing,
An integrated heat exchanger for a double-effect absorption refrigerator, wherein a space excluding a space above the casing is partitioned by a partition plate into a low-temperature regenerator and a condenser. 前記低温再生器コアと前記凝縮器コアを間に前記仕切板を介装して背中合せに重ねて前記ケーシング内に収容したことを特徴とする請求項１記載の二重効用吸収冷凍機の一体型熱交換器。The double-effect absorption refrigerator according to claim 1, wherein the low-temperature regenerator core and the condenser core are housed in the casing with the partition plate interposed therebetween and stacked back to back. Heat exchanger. 前記低温再生器コアと前記凝縮器コアを間に前記仕切板を介装して横並びに配置して前記ケーシング内に収容したことを特徴とする請求項１記載の二重効用吸収冷凍機の一体型熱交換器。2. The double effect absorption refrigerator according to claim 1, wherein the low temperature regenerator core and the condenser core are arranged side by side with the partition plate interposed therebetween and housed in the casing. Body heat exchanger. 前記低温再生器は、エレメント内に高温冷媒蒸気を通し、同エレメントに上から中間濃度吸収液を流下させる流下液膜式構造とすることを特徴とする請求項１から請求項３までのいずれかの項記載の二重効用吸収冷凍機の一体型熱交換器。4. The low-temperature regenerator according to claim 1, wherein the low-temperature regenerator has a falling liquid film structure in which high-temperature refrigerant vapor is passed through the element and the intermediate-concentration absorbing liquid flows down from above the element. The integrated heat exchanger of the double-effect absorption refrigerator described in the paragraph.
JP2003061586A 2003-03-07 2003-03-07 Integrated heat exchanger for double-utility absorption refrigerator Pending JP2004271027A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007247956A (en) * 2006-03-15 2007-09-27 Daikin Ind Ltd Refrigerant generator for absorption refrigerating machine
WO2008064383A2 (en) * 2006-11-30 2008-06-05 Österreichisches Forschungs- Und Prüfzentrum Arsenal Gesellschaft M.B.H. Module for an absorption-type refrigeration machine
JP2010043811A (en) * 2008-08-18 2010-02-25 Hitachi Appliances Inc Absorption water cooler-heater
JP2013007370A (en) * 2011-06-27 2013-01-10 Ihi Corp Waste heat power generator
WO2014045996A1 (en) * 2012-09-21 2014-03-27 ヤンマー株式会社 Second-class absorption heat pump
CN112283979A (en) * 2020-10-09 2021-01-29 普泛能源技术研究院(北京)有限公司 Multifunctional heat exchanger and composite absorption type system thereof
DE202019106674U1 (en) * 2019-11-29 2021-03-02 Hochschule für angewandte Wissenschaften München Plate apparatus for mass and heat transfer in sorption heat pumps with separation of liquid and vapor flow

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007247956A (en) * 2006-03-15 2007-09-27 Daikin Ind Ltd Refrigerant generator for absorption refrigerating machine
JP4720558B2 (en) * 2006-03-15 2011-07-13 ダイキン工業株式会社 Absorption refrigerator generator
WO2008064383A2 (en) * 2006-11-30 2008-06-05 Österreichisches Forschungs- Und Prüfzentrum Arsenal Gesellschaft M.B.H. Module for an absorption-type refrigeration machine
WO2008064383A3 (en) * 2006-11-30 2008-11-20 Oesterreichisches Forschungs U Module for an absorption-type refrigeration machine
JP2010043811A (en) * 2008-08-18 2010-02-25 Hitachi Appliances Inc Absorption water cooler-heater
JP2013007370A (en) * 2011-06-27 2013-01-10 Ihi Corp Waste heat power generator
WO2014045996A1 (en) * 2012-09-21 2014-03-27 ヤンマー株式会社 Second-class absorption heat pump
DE202019106674U1 (en) * 2019-11-29 2021-03-02 Hochschule für angewandte Wissenschaften München Plate apparatus for mass and heat transfer in sorption heat pumps with separation of liquid and vapor flow
DE102020131615B4 (en) 2019-11-29 2022-03-03 Hochschule für angewandte Wissenschaften München - Körperschaft des öffentlichen Rechts Plate apparatus for mass and heat transfer in sorption heat pumps with separation of liquid and vapor flow
CN112283979A (en) * 2020-10-09 2021-01-29 普泛能源技术研究院(北京)有限公司 Multifunctional heat exchanger and composite absorption type system thereof

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