JP2007255860A - Absorber for air-cooled absorption type refrigerating device - Google Patents

Absorber for air-cooled absorption type refrigerating device Download PDF

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JP2007255860A
JP2007255860A JP2006084428A JP2006084428A JP2007255860A JP 2007255860 A JP2007255860 A JP 2007255860A JP 2006084428 A JP2006084428 A JP 2006084428A JP 2006084428 A JP2006084428 A JP 2006084428A JP 2007255860 A JP2007255860 A JP 2007255860A
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absorber
air
solution
cooled
absorption
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JP4821397B2 (en
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Mitsushi Kawai
満嗣 河合
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Daikin Industries 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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Abstract

<P>PROBLEM TO BE SOLVED: To solve problems on clogging of an absorbent atomizing nozzle in an indirect air-cooled type absorber applying an atomization method, increase of power consumption by increase of discharge heads of a solution pump, and the like. <P>SOLUTION: In this air-cooled absorption type refrigerating device where the indirect air-cooling method for removing heat only by sensible heat of a solution obtained by supercooling an absorbed solution flowing into the absorber by an air-cooled cooler, is applied as a cooling method of the absorber, a liquid film flow-down type plate structure is applied to an absorbing portion of the absorber 3, an absorbed solution distributing tray 6 for uniformly distributing the absorbed solution to the plate portion, is disposed on its upper portion, and the absorbed solution after supercooling is allowed to flow to both faces of the plate portion in a liquid film state to promote the absorption of a refrigerant vapor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本願発明は、間接空冷方式を採用した空冷吸収式冷凍装置の吸収器の構造に関するものである。   The present invention relates to the structure of an absorber of an air-cooled absorption refrigeration apparatus employing an indirect air-cooling method.

従来の一般的な空冷吸収式冷凍装置の吸収器は、例えば図７に示すように、吸収器３０を、多数の伝熱フィン９，９・・・を備えた複数本の伝熱管３ａ，３ａ・・・（溶液流入口３ｃ，３ｃ・・・）と、吸収溶液分配トレイ１１とから構成し、溶液循環路１３に設けた冷媒循環ポンプＰを介して吸収器３０の伝熱管３ａ，３ａ・・・内の冷媒通路３ｂ，３ｂ・・・に吸収溶液を流し、同溶液通路３ｂ，３ｂ・・・部分で蒸発器側からの冷媒蒸気を吸収させながら、吸収溶液を伝熱管３ａ，３ａ外周のファンＦの冷却風により冷却される空冷フィン９，９・・・で冷却する直接空冷方式であり、吸収器３０では、冷媒蒸気の吸収と吸収溶液の冷却とを同時に行うための気液界面の拡大が重要であるため、小型化への制約が大きい。   For example, as shown in FIG. 7, an absorber of a conventional general air-cooled absorption refrigeration apparatus includes an absorber 30 and a plurality of heat transfer tubes 3a, 3a each having a plurality of heat transfer fins 9, 9. ... (solution inlets 3c, 3c ...) and the absorption solution distribution tray 11, and the heat transfer tubes 3a, 3a, ... of the absorber 30 via the refrigerant circulation pump P provided in the solution circulation path 13. ..Absorptive solution flows through the inner refrigerant passages 3b, 3b... And absorbs the refrigerant vapor from the evaporator side in the solution passages 3b, 3b. Are directly air-cooled with air-cooling fins 9, 9... Cooled by the cooling air of the fan F, and the absorber 30 is a gas-liquid interface for simultaneously absorbing the refrigerant vapor and cooling the absorbing solution. Since it is important to expand the size, there are significant restrictions on downsizing.

例えば、吸収溶液分配トレイ１１を含めた上下吸収器ヘッダー部分でのスペース、蒸気圧損考慮のための大口径管の使用、冷媒蒸気の流速制限に起因して蒸発器との連絡管が太くなる等である。   For example, the space in the upper and lower absorber headers including the absorbent solution distribution tray 11, the use of a large-diameter pipe for considering vapor pressure loss, the connection pipe with the evaporator becoming thick due to the restriction of the flow rate of the refrigerant vapor, etc. It is.

また、コスト的にも、溶接による接続箇所があるため、小型機では割高となる。   Moreover, since there exists the connection location by welding also in terms of cost, it becomes expensive in a small machine.

これに対して、例えば図８に示すように、溶液ポンプＰにより溶液循環路１２を介して筒状の吸収器３０内に流入する吸収溶液を伝熱管１５ａ，１５ａ・・・、伝熱フィン１７，１７・・・、上下ヘッダ１６ｂ，１６ａ、ファンＦ等よりなる空冷式の冷却器１５にて過冷却することによって、吸収器３０内では単に冷媒蒸気のみを吸収させ、吸収熱は同過冷却された吸収溶液の顕熱で取り去るだけの間接（溶液分離冷却）空冷方式があり、同方式では、冷却手段が不要となるだけ吸収器３０部分が小型化されるので、小型の空冷吸収器では有利である。   On the other hand, for example, as shown in FIG. 8, the absorption solution flowing into the cylindrical absorber 30 through the solution circulation path 12 by the solution pump P is transferred to the heat transfer tubes 15 a, 15 a. , 17..., And by supercooling by the air-cooled cooler 15 including the upper and lower headers 16b and 16a, the fan F, etc., only the refrigerant vapor is absorbed in the absorber 30, and the absorbed heat is supercooled. There is an indirect (solution separation cooling) air cooling method that removes the absorbed solution by sensible heat. In this method, the absorber 30 is reduced in size so that no cooling means is required. It is advantageous.

そこで、従来例の中には、そのような特徴を活用し、吸収溶液噴霧方式（図８の符号１４参照）による冷媒蒸気の吸収方法を採用した空冷吸収式冷凍装置の吸収器がある（特許文献１参照）。   Therefore, in the conventional example, there is an absorber of an air-cooled absorption refrigeration apparatus that utilizes such a feature and adopts an absorption solution spray method (see reference numeral 14 in FIG. 8) of refrigerant vapor (patent). Reference 1).

特開平７−９８１６３号公報（明細書１−８頁、図１−１２）JP-A-7-98163 (Specifications page 1-8, FIG. 1-12)

しかし、同噴霧方式では吸収液噴霧ノズル１４の目詰まりや、溶液ポンプの吐出ヘッド増大による消費電力の増加等の問題がある。   However, the spray system has problems such as clogging of the absorbing liquid spray nozzle 14 and an increase in power consumption due to an increase in the discharge head of the solution pump.

本願発明は、このような問題を解決するためになされたもので、吸収器の冷却方式を、上記吸収器に流入する吸収溶液を空冷冷却器にて過冷却した溶液の顕熱で取り去るだけの間接空冷方式とする一方、吸収器の吸収部に液膜流下式のプレート構造を採用するとともに、その上部にプレートに吸収溶液を均等に分配するための吸収溶液分配トレイを設け、当該プレートの両面に上記過冷却後の吸収溶液を液膜状態で流すことによって、冷媒蒸気の吸収を促進させるようにした高効率かつ小型、低コストの空冷吸収器を提供することを目的とするものである。   The present invention has been made to solve such problems, and the cooling method of the absorber is simply removed by the sensible heat of the solution supercooled by the air-cooled cooler. While adopting an indirect air cooling system, a liquid film flow-down plate structure is adopted for the absorption part of the absorber, and an absorption solution distribution tray for evenly distributing the absorption solution to the plate is provided on the upper part, and both surfaces of the plate are arranged. Another object of the present invention is to provide a high-efficiency, small, and low-cost air-cooled absorber that promotes absorption of refrigerant vapor by flowing the supercooled absorption solution in a liquid film state.

本願発明は、同目的を達成するために、次のような課題解決手段を備えて構成されている。   In order to achieve the same object, the present invention is configured with the following problem solving means.

（１） 第１の課題解決手段
この発明の第１の課題解決手段は、吸収器の冷却方式を、当該吸収器に流入する吸収溶液を空冷冷却器にて過冷却した溶液の顕熱で取り去るだけの間接空冷方式としてなる空冷吸収式冷凍装置において、上記吸収器の吸収部に液膜流下式のプレート構造を採用するとともに、その上部に同プレート部に吸収溶液を均等に分配するための吸収溶液分配トレイを設け、当該プレート部の両面に上記過冷却後の吸収溶液を液膜状態で流すことにより、冷媒蒸気の吸収を促進させるようにされている。 (1) First problem solving means The first problem solving means of the present invention removes the cooling method of the absorber by sensible heat of the solution supercooled by the air-cooled cooler from the absorbing solution flowing into the absorber. In the air-cooled absorption refrigeration system, which is an indirect air-cooling system only, a liquid film flow-down plate structure is adopted for the absorption part of the absorber, and absorption for evenly distributing the absorption solution to the plate part on the upper part A solution distribution tray is provided, and absorption of the refrigerant vapor is promoted by flowing the supercooled absorption solution in a liquid film state on both surfaces of the plate portion.

このような構成によれば、吸収器の吸収部を伝熱管ではなくプレート部材で構成することができるようになり、蒸発器との一体化も可能となり、小型化、低コスト化が可能となる。   According to such a configuration, the absorption part of the absorber can be configured by a plate member instead of a heat transfer tube, and can be integrated with the evaporator, and can be reduced in size and cost. .

また、従来例のような吸収溶液噴霧ノズルを使用するものと異なって、目詰まりや、溶液ポンプの吐出ヘッドの増大等がなく、消費電力も少ない。   Further, unlike the case of using the absorbing solution spray nozzle as in the conventional example, there is no clogging, an increase in the discharge head of the solution pump, and the power consumption is small.

また、吸収溶液冷却用の空冷冷却器は、汎用の伝熱管や熱交換器が使用できるため、大きくコストが低下する。   In addition, since the air-cooled cooler for cooling the absorbing solution can use a general-purpose heat transfer tube or heat exchanger, the cost is greatly reduced.

（２） 第２の課題解決手段
この発明の第２の課題解決手段は、上記第１の課題解決手段の構成において、プレート部はフラットな平面プレートよりなっている。 (2) Second Problem Solving Means According to a second problem solving means of the present invention, in the configuration of the first problem solving means, the plate portion is a flat flat plate.

このような構成によると、液膜化による吸収効率向上、冷却部不要による可及的な小型化を図ることができる。   According to such a configuration, it is possible to improve the absorption efficiency by forming a liquid film and to reduce the size as much as possible without the need for a cooling unit.

（３） 第３の課題解決手段
この発明の第３の課題解決手段は、上記第１の課題解決手段の構成において、プレート部は、コルゲーションタイプの平面プレートよりなっている。 (3) Third Problem Solving Means According to a third problem solving means of the present invention, in the configuration of the first problem solving means, the plate portion is a corrugated flat plate.

このような構成によれば、平面プレートとして効果的に液膜化が図られることはもちろん、液膜部の面積拡大により、より有効に吸収性能を向上させることができる。   According to such a configuration, a liquid film can be effectively formed as a flat plate, and the absorption performance can be improved more effectively by expanding the area of the liquid film portion.

（４） 第４の課題解決手段
この発明の第４の課題解決手段は、上記第２の課題解決手段の構成において、プレート部の表面に、液膜拡散手段を設けて構成されている。 (4) Fourth Problem Solving Means A fourth problem solving means of the present invention is configured by providing a liquid film diffusion means on the surface of the plate portion in the configuration of the second problem solving means.

このような構成によれば、プレート部表面の液膜を有効に拡散させ、下部側への流下を可及的に均一することができる。その結果、より有効に吸収性能を向上させることができる。   According to such a configuration, the liquid film on the surface of the plate portion can be effectively diffused, and the flow down to the lower side can be made as uniform as possible. As a result, the absorption performance can be improved more effectively.

この液膜拡散手段としては、例えばプレート部の表面にディンプルや凹凸の溝を付けたり、さらに金網等を取り付けることなどが考えられる。   As the liquid film diffusing means, for example, it is conceivable to add dimples or concave and convex grooves on the surface of the plate portion, or to attach a wire mesh or the like.

（５） 第５の課題解決手段
この発明の第５の課題解決手段は、上記第３の課題解決手段の構成において、コルゲーションタイプの平面プレートのプレート部には、多数の穴が設けられている。 (5) Fifth Problem Solving Means According to a fifth problem solving means of the present invention, in the configuration of the third problem solving means, a plate portion of a corrugation type flat plate is provided with a number of holes. .

このような構成によれば、平面部での吸収液の液膜化と多数の穴を介した液滴化とが可能となり、それらの両方で冷媒蒸気の吸収性能を一層大きく向上させることができる。   According to such a configuration, it is possible to form a liquid film of the absorbing liquid on the flat portion and to form droplets through a large number of holes, and both of them can further improve the absorption performance of the refrigerant vapor. .

この場合、穴あきプレートとしては、例えばパンチングプレートやエキスパンドメタルなどの採用が可能であり、そのようにすると、容易に加工製作することができる。   In this case, for example, a punching plate or an expanded metal can be used as the perforated plate, and by doing so, it can be easily processed and manufactured.

以上の結果、本願発明によると、冷媒蒸気吸収性能の高い吸収器を低コスト、かつコンパクトに提供することが可能となる。   As a result, according to the present invention, it is possible to provide an absorber with high refrigerant vapor absorption performance at low cost and in a compact manner.

（最良の実施の形態１）
図１〜図３は、本願発明の最良の実施の形態１に係る空冷吸収式冷凍装置の吸収器の構成を示している。 (Best Embodiment 1)
1 to 3 show the configuration of an absorber of an air-cooled absorption refrigeration apparatus according to the best embodiment 1 of the present invention.

先ず図１は、同吸収器３に対して蒸発器２を箱型の本体ケーシング４内に一体化した吸収器および蒸発器ユニット１部分の構成を箱型の本体ケーシング４の一部を切り欠いて示している。   First, FIG. 1 shows a configuration of an absorber and an evaporator unit 1 part in which an evaporator 2 is integrated in a box-type main body casing 4 with respect to the same absorber 3, and a part of the box-type main body casing 4 is cut away. It shows.

この実施の形態の場合、吸収器３に入るＬｉＢｒ吸収溶液を図示しない空冷冷却器（図８参照）にて過冷却し、蒸発器２と一体で本体ケーシング１内に収められた吸収器３内で、蒸発器２で蒸発させた冷媒蒸気を単に吸収させるだけで、吸収時に発生する吸収熱を過冷却された吸収溶液の顕熱で間接的に冷却する間接（溶液分離冷却）空冷方式が採用されている。   In the case of this embodiment, the LiBr absorption solution entering the absorber 3 is supercooled by an air-cooled cooler (not shown) (see FIG. 8), and the absorber 3 integrated with the evaporator 2 is accommodated in the main body casing 1. Therefore, an indirect (solution separation cooling) air cooling method is adopted in which the refrigerant vapor evaporated in the evaporator 2 is simply absorbed and the absorption heat generated during absorption is indirectly cooled by the sensible heat of the supercooled absorption solution. Has been.

そして、蒸発器２、吸収器３の各々上部には、図２、図３に示すように、冷媒、吸収溶液を均等に分配するための冷媒分配トレイ５、吸収溶液分配トレイ６を各々設け、蒸発器２は内部に被冷却体通路２１ａを形成した菱形構造のプレート熱交換器２１，２１・・・とし、表面に冷媒を液膜で流下させて蒸発させることで内部の被冷却流体（冷水等）を冷却するようになっている一方、吸収器３は単一の平面プレート３１，３１・・・の両面を溶液が液膜状態で垂直に流下することで、冷媒蒸気の吸収をより効果的に促進させるようになっている。   Then, as shown in FIGS. 2 and 3, a refrigerant distribution tray 5 and an absorption solution distribution tray 6 for evenly distributing the refrigerant and the absorption solution are provided on the upper portions of the evaporator 2 and the absorber 3, respectively. The evaporator 2 is a rhombus-shaped plate heat exchanger 21, 21... In which a cooled body passage 21 a is formed, and a coolant is allowed to flow down on the surface in a liquid film to evaporate the liquid to be cooled (cold water). Etc.), while the absorber 3 causes the solution to flow vertically in a liquid film state on both surfaces of a single flat plate 31, 31. Has been promoted.

なお、図１中の７は希溶液の出口、８ａは冷水の入り口、８ｂは冷水の出口を示している。   In FIG. 1, 7 is an outlet for dilute solution, 8a is an inlet for cold water, and 8b is an outlet for cold water.

このような構成によれば、吸収器３の吸収部を伝熱管ではなくプレート部材で構成することができるようになり、蒸発器２との一体化も可能となり、小型化、低コスト化が可能となる。   According to such a configuration, the absorption part of the absorber 3 can be configured by a plate member instead of a heat transfer tube, and can be integrated with the evaporator 2, thereby enabling downsizing and cost reduction. It becomes.

また、従来例のような吸収溶液噴霧ノズル（図８中の１４参照）を使用するものと異なって、目詰まりや、溶液ポンプの吐出ヘッドの増大等がなく、消費電力も少ない。   Further, unlike the case of using an absorbing solution spray nozzle (see 14 in FIG. 8) as in the conventional example, there is no clogging, an increase in the discharge head of the solution pump, and the power consumption is small.

また、吸収溶液冷却用の空冷冷却器は、汎用の伝熱管や熱交換器が使用できるため（図８の構成参照）、大きくコストが低下する。   In addition, since the air-cooled cooler for cooling the absorbing solution can use a general-purpose heat transfer tube or heat exchanger (see the configuration in FIG. 8), the cost is greatly reduced.

また、吸収器３の吸収部はフラットな平面プレート３１，３１・・・よりなっている。   Moreover, the absorption part of the absorber 3 consists of flat plane plates 31, 31 ....

このような構成によると、液膜化による吸収効率向上、冷却部不要による可及的な小型化を図ることができる。   According to such a configuration, it is possible to improve the absorption efficiency by forming a liquid film and to reduce the size as much as possible without the need for a cooling unit.

それらの結果、冷媒蒸気吸収性能の高い吸収器を低コスト、かつコンパクトに提供することが可能となる。   As a result, it is possible to provide an absorber having high refrigerant vapor absorption performance at a low cost and in a compact manner.

（変形例１）
なお、以上のように構成した場合において、上記フラットな平面プレート３１，３１・・・の表面には、液膜を有効に拡散させ、その下部への流下状態をできるだけ均一化にするように、例えばディンプルや凹凸の溝を付けたり、さらに金網等を取り付けることもできる。 (Modification 1)
In the case of the above configuration, the liquid film is effectively diffused on the surfaces of the flat flat plates 31, 31..., So that the flowing state to the lower part is made as uniform as possible. For example, dimples and concave / convex grooves can be provided, and a wire mesh or the like can be attached.

（最良の実施の形態２）
次に図４および図５は、本願発明の最良の実施の形態２に係る空冷吸収式冷凍装置の吸収器の構造を示している。 (Best Mode 2)
Next, FIGS. 4 and 5 show the structure of the absorber of the air-cooled absorption refrigeration apparatus according to the second preferred embodiment of the present invention.

この実施の形態は、上記最良の実施の形態１の構成における吸収器３の各平面プレート３１，３１・・・を、例えば図４に示すような上下方向に所定の長さのコルゲーション構造に曲成するとともに、その表面３１ａ，３１ａ・・・に多数の穴３２，３２・・・を設け、平面部を上方側から下方側に流下する液膜化された吸収溶液をさらに多数の穴３２，３２・・・を介して効果的に液滴化させながら順次上段から下段に流下させるようにしたことを特徴とするものである。   In this embodiment, the planar plates 31, 31... Of the absorber 3 in the configuration of the best embodiment 1 are bent into a corrugation structure having a predetermined length in the vertical direction as shown in FIG. Are provided with a large number of holes 32, 32... On the surfaces 31a, 31a... 32..., While being effectively formed into droplets through the upper and lower stages 32...

このような構成によると、液膜形成のためのプレート部の面積が大きく拡大され、液膜面積が大きく拡大されるとともに、それらの広い範囲で上段側から下段側への液滴化が生じ、それらの両方の作用で冷媒蒸気の吸収性能が一段と大きく向上する。   According to such a configuration, the area of the plate portion for liquid film formation is greatly enlarged, the liquid film area is greatly enlarged, and droplet formation from the upper stage side to the lower stage occurs in those wide ranges, Both of these effects greatly improve the refrigerant vapor absorption performance.

（変形例１）
なお、以上のように構成した場合においても、上記多数の穴３２，３２・・・を有するコルゲーション構造の平面プレート３１，３１・・・の表面に、液膜を拡散させ、その下部への流下状態をできるだけ均一化にするように、例えばディンプルや凹凸の溝を付けたり、さらに金網等を取り付けることができる。 (Modification 1)
Even when configured as described above, the liquid film is diffused on the surface of the flat plate 31, 31... Of the corrugation structure having the numerous holes 32, 32. In order to make the state as uniform as possible, for example, dimples or concave and convex grooves can be provided, or a wire mesh or the like can be attached.

（変形例２）
また、以上のように、吸収器３の平面プレート３１，３１・・・を、多数の穴３２，３２・・・を備えたコルゲーション構造のものに形成した場合において、例えば図６に示すように、上記吸収器３と蒸発器４は横方向に並設して一体化することもできる。 (Modification 2)
Further, as described above, when the flat plates 31, 31... Of the absorber 3 are formed in a corrugated structure having a large number of holes 32, 32. The absorber 3 and the evaporator 4 can be arranged side by side in the horizontal direction and integrated.

このような構成によっても、上記図４のものと全く同様の作用効果を実現することができる。   Even with such a configuration, it is possible to achieve the same effect as that of FIG.

本願発明の最良の実施の形態１に係る空冷吸収式冷凍装置の蒸発器および吸収器部分の構成を示す一部切欠斜視図である。It is a partially cutaway perspective view showing the configuration of the evaporator and the absorber part of the air-cooled absorption refrigeration apparatus according to the first embodiment of the present invention. 同装置の蒸発器部分の縦断面図である。It is a longitudinal cross-sectional view of the evaporator part of the same apparatus. 同装置の吸収器部分の縦断面図である。It is a longitudinal cross-sectional view of the absorber part of the same apparatus. 本願発明の最良の実施の形態２に係る空冷吸収式冷凍装置の蒸発器および吸収器部分の構成を示す斜視図である。It is a perspective view which shows the structure of the evaporator and absorber part of the air cooling absorption refrigerating device which concerns on best Embodiment 2 of this invention. 同装置の吸収器およびトレイ部分の構成を示す斜視図である。It is a perspective view which shows the structure of the absorber of the same apparatus, and a tray part. 同装置の変形例２に係る蒸発器および吸収器部分の斜視図である。It is a perspective view of the evaporator and absorber part which concern on the modification 2 of the apparatus. 従来一般の空冷吸収式冷凍装置の空冷吸収器の構成を示す図である。It is a figure which shows the structure of the air-cooling absorber of the conventional general air-cooling absorption refrigeration apparatus. 従来の空冷吸収式冷凍装置の間接空冷方式の吸収器の構成を示す図である。It is a figure which shows the structure of the absorber of the indirect air cooling system of the conventional air cooling absorption refrigeration apparatus.

符号の説明Explanation of symbols

１は蒸発器および吸収器ユニット、２は蒸発器、３は吸収器、４は本体ケーシング、５は冷媒分配トレイ、６は吸収溶液分配トレイ、２１は蒸発器用プレート式熱交換器、２１ａは被冷却体通路、３１は吸収器用平面プレートである。   1 is an evaporator and absorber unit, 2 is an evaporator, 3 is an absorber, 4 is a main body casing, 5 is a refrigerant distribution tray, 6 is an absorbent solution distribution tray, 21 is a plate heat exchanger for an evaporator, and 21a is a cover. The cooling body passage 31 is an absorber flat plate.

Claims (5)

吸収器の冷却方式を、当該吸収器に流入する吸収溶液を空冷冷却器にて過冷却した溶液の顕熱で取り去るだけの間接空冷方式としてなる空冷吸収式冷凍装置において、上記吸収器の吸収部に液膜流下式のプレート構造を採用するとともに、その上部に同プレート部に吸収溶液を均等に分配するための吸収溶液分配トレイを設け、当該プレート部の両面に上記過冷却後の吸収溶液を液膜状態で流すことにより、冷媒蒸気の吸収を促進させるようにしたことを特徴とする空冷吸収式冷凍装置の吸収器。   In the air-cooled absorption refrigeration system, the absorption unit of the absorber is an indirect air-cooling system in which the absorption solution flowing into the absorber is simply removed by the sensible heat of the supercooled solution in the air-cooled cooler. In addition, the plate structure of the liquid film flow type is adopted, and the upper part thereof is provided with an absorbent solution distribution tray for evenly distributing the absorbent solution to the same plate part, and the supercooled absorbent solution is placed on both surfaces of the plate part. An absorber of an air-cooled absorption refrigeration apparatus, wherein the absorption of refrigerant vapor is promoted by flowing in a liquid film state. プレート部は、フラットな平面プレートよりなっていることを特徴とする請求項１記載の空冷吸収式冷凍装置の吸収器。   2. The absorber of an air-cooled absorption refrigeration apparatus according to claim 1, wherein the plate portion is a flat flat plate. プレート部は、コルゲーションタイプの平面プレートよりなっていることを特徴とする請求項１記載の空冷吸収式冷凍装置の吸収器。   The absorber of an air-cooled absorption refrigeration apparatus according to claim 1, wherein the plate portion is a corrugated flat plate. プレート部の表面に、液膜拡散手段を設けて構成されていることを特徴とする請求項２又は３記載の空冷吸収式冷凍装置の吸収器。   The absorber of an air-cooled absorption refrigeration apparatus according to claim 2 or 3, wherein a liquid film diffusion means is provided on the surface of the plate portion. コルゲーションタイプの平面プレートのプレート部には、多数の穴が設けられていることを特徴とする請求項３又は４記載の空冷吸収式冷凍装置の吸収器。   The absorber of the air-cooled absorption refrigeration apparatus according to claim 3 or 4, wherein the plate portion of the corrugation type flat plate is provided with a number of holes.
JP2006084428A 2006-03-27 2006-03-27 Air-cooled absorption refrigeration equipment absorber Expired - Fee Related JP4821397B2 (en)

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WO2017053955A1 (en) * 2015-09-24 2017-03-30 University Of Florida Research Foundation, Inc. Compact and efficient plate and frame abssorber
JP2019507313A (en) * 2016-01-28 2019-03-14 クール４シー エーピーエスＣｏｏｌ４Ｓｅａ Ａｐｓ Absorption refrigeration and air conditioning equipment

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JP2007278570A (en) * 2006-04-05 2007-10-25 Daikin Ind Ltd Air-cooled absorption type refrigerating device
WO2017053955A1 (en) * 2015-09-24 2017-03-30 University Of Florida Research Foundation, Inc. Compact and efficient plate and frame abssorber
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JP2019507313A (en) * 2016-01-28 2019-03-14 クール４シー エーピーエスＣｏｏｌ４Ｓｅａ Ａｐｓ Absorption refrigeration and air conditioning equipment
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JP7029807B2 (en) 2016-01-28 2022-03-04 クール４シー エーピーエス Absorption refrigeration and air conditioning equipment

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