JPH0569568U - Absorption refrigerator - Google Patents
Absorption refrigeratorInfo
- Publication number
- JPH0569568U JPH0569568U JP760292U JP760292U JPH0569568U JP H0569568 U JPH0569568 U JP H0569568U JP 760292 U JP760292 U JP 760292U JP 760292 U JP760292 U JP 760292U JP H0569568 U JPH0569568 U JP H0569568U
- Authority
- JP
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- Prior art keywords
- chamber
- solution
- heat exchanger
- refrigerant
- bellows
- Prior art date
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- Sorption Type Refrigeration Machines (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
(57)【要約】
［目的］折り曲げプレートによる熱交換器の伝熱効率の
向上と炉中ロー付けによる熱歪の防止を図った吸収式冷
凍機を提供すること。
［構成］吸収式冷凍機において、蒸発器２５、吸収器２
６、凝縮器２４、および低温再生器２３のうちの少なく
とも一つを、薄板の連続折り曲げにより加工した波形形
状の蛇腹フィン１と、この蛇腹フィン１の山部と谷部と
から形成される室を端面でシールするシールプレート
２，３とからなる熱交換器で構成するとともに、前記室
のうち冷媒および／または溶液の通る室８に網９を挿入
したこと。
(57) [Summary] [Purpose] To provide an absorption chiller that improves the heat transfer efficiency of a heat exchanger by a bent plate and prevents thermal strain due to brazing in a furnace. [Constitution] In the absorption refrigerator, the evaporator 25 and the absorber 2
6, a condenser 24, and at least one of the low-temperature regenerator 23, a chamber formed by a corrugated bellows fin 1 formed by continuous bending of a thin plate, and the peaks and valleys of the bellows fin 1. Is composed of a heat exchanger composed of seal plates 2 and 3 for sealing at the end faces, and a net 9 is inserted into the chamber 8 through which the refrigerant and / or solution passes.
Description
【０００１】[0001]
本考案は吸収式冷凍機に係り、より詳しくは熱交換の必要な部分の熱交換効率 の向上を図った吸収式冷凍機に関する。 The present invention relates to an absorption refrigerating machine, and more particularly, to an absorption refrigerating machine having improved heat exchange efficiency in a portion requiring heat exchange.
【０００２】[0002]
吸収式冷凍機の熱交換器を薄板の連続折り曲げにより加工した波形形状の蛇腹 フィンと、この蛇腹フィンの山部と谷部とから形成される室を端面でシールする シールプレートとで構成するものとして、本出願人は実願平３−５２５５９号お よび特願平３−１６９７５７号を提案してきた。本出願はこのうち後者の改良に 係るものである。従来、この種の熱交換器を縦形としてもちいる際、冷媒および ／または溶液のプレート表面での濡れ性を向上して伝熱効率を良くするために、 図４に示すように、プレート表面にサンドブラストまたは転造加工によりローレ ット加工を行っている。また、熱交換器のシール部の接合は炉中ロー付けにて行 っている。 Consists of a corrugated bellows fin that is formed by continuously bending thin plates of a heat exchanger of an absorption refrigerator, and a seal plate that seals the chamber formed by the peaks and valleys of the bellows fin at the end surface. As a result, the present applicant has proposed Japanese Patent Application No. 3-52559 and Japanese Patent Application No. 3-169757. The present application relates to the latter improvement. Conventionally, when this type of heat exchanger is used as a vertical type, in order to improve the heat transfer efficiency by improving the wettability of the refrigerant and / or solution on the plate surface, as shown in FIG. 4, sandblasting is performed on the plate surface. Or rolling is performed by rolling. The seals of the heat exchanger are joined by brazing in the furnace.
【０００３】[0003]
しかしながら、このような従来の吸収式冷凍機の熱交換器にあっては、プレー ト表面にサンドブラストまたは転造加工によりローレット加工を施しても伝熱効 率は十分ではなく、また、熱交換器のシール部の接合を炉中ロー付けにて行う際 に図５に示すように、炉中ロー付けによる熱歪により、折り曲げプレートにより 仕切られた流路が不均一になり熱交換効率の低下となるという欠点があった。 However, in such a conventional heat exchanger of an absorption refrigerator, the heat transfer efficiency is not sufficient even if the plate surface is knurled by sandblasting or rolling, and the heat exchanger is As shown in Fig. 5, when the sealing part of the is joined by brazing in the furnace, the flow path partitioned by the bending plate becomes non-uniform due to the thermal strain caused by brazing in the furnace, and the heat exchange efficiency decreases. There was a drawback that
【０００４】 本考案は上記問題点を解決するためになされたもので、その目的は折り曲げプ レートによる熱交換器の伝熱効率の向上と炉中ロー付けによる熱歪の防止を図っ た吸収式冷凍機を提供することにある。The present invention has been made to solve the above problems, and its purpose is to improve the heat transfer efficiency of a heat exchanger by a bending plate and to prevent thermal distortion by brazing in a furnace. To provide a machine.
【０００５】[0005]
【課題を解決するための手段】 上記目的を達成するため本考案による吸収式冷凍機にあっては、蒸発器、吸収 器、凝縮器、および低温再生器のうちの少なくとも一つを、薄板の連続折り曲げ により加工した波形形状の蛇腹フィンと、この蛇腹フィンの山部と谷部とから形 成される室を端面でシールするシールプレートとからなる熱交換器で構成すると ともに、前記室のうち冷媒および／または溶液の通る室に網を挿入したことを特 徴とする。In order to achieve the above object, in an absorption refrigerator according to the present invention, at least one of an evaporator, an absorber, a condenser, and a low temperature regenerator is a thin plate. The heat exchanger includes a corrugated bellows fin processed by continuous bending and a seal plate that seals the chamber formed by the peaks and valleys of the bellows fin at the end face. The feature is that the mesh is inserted in the chamber through which the refrigerant and / or the solution passes.
【０００６】[0006]
上記構成によれば、熱交換の必要な部分、例えば蒸発器内を流れる冷水（循環 水）と冷媒液は、薄板の連続折り曲げにより加工した波形形状の蛇腹フィンとこ の蛇腹フィンの山部と谷部とから形成される室を互いに逆方向へ流れることにな り、その接触面積が飛躍的に増大し、また、冷媒液の通る室に網を挿入したので 冷媒の横方向への濡れ広がり性を向上して伝熱効率が良くなり、冷水と冷媒液間 の熱交換効率は改良される。同様に、溶液の通る室に網を挿入したので、吸収器 や低温再生器の場合も溶液の横方向への濡れ広がり性の向上と撹拌性の向上によ り伝熱効率と吸収性能または沸騰伝熱性の改良となる。 According to the above configuration, portions requiring heat exchange, for example, cold water (circulating water) and refrigerant liquid flowing in the evaporator are corrugated bellows fins formed by continuous bending of thin plates and peaks and valleys of these bellows fins. The flow areas in the chamber formed by the parts and the parts flow in opposite directions, which dramatically increases the contact area.In addition, since a mesh is inserted in the chamber through which the refrigerant liquid passes, wetting and spreading of the refrigerant in the lateral direction To improve the heat transfer efficiency and improve the heat exchange efficiency between the cold water and the refrigerant liquid. Similarly, since a mesh is inserted in the chamber through which the solution passes, even in the case of an absorber or low-temperature regenerator, the heat transfer efficiency and absorption performance or boiling transfer can be improved by improving the lateral wetting and spreading properties of the solution and improving the stirring property. It improves the heat resistance.
【０００７】[0007]
以下、本考案の一実施例を図面に基づいて説明する。吸収式冷凍機の熱交換器 を説明するのに先立って一般的な吸収式冷凍機の概要を図３を用いて説明してお くこととする。図３において、高温再生器２１は内部に燃焼室が収められ、冷媒 を吸収して濃度が薄くなった稀溶液を加熱し、この稀溶液から冷媒蒸気を発生す る。分離器２２は冷媒蒸気を蒸発して濃度が濃くなった中間濃溶液と冷媒蒸気と を分離し、前者を高温溶液熱交換器２７へ後者を低温再生器２３へと送り込む。 低温再生器２３は高温溶液熱交換器２７により温度が低下した中間濃溶液を分離 器２２からくる冷媒蒸気で再加熱し、中間濃溶液の中から更に冷媒蒸気を発生さ せ、これを凝縮器２４へ送出しかつ中間濃溶液自身を濃溶液にするとともに、分 離器２２からきた冷媒蒸気を一部凝縮し冷媒液にして凝縮器２４へと送り込む。 凝縮器２４は低温再生器２３で発生した冷媒蒸気と低温再生器２３で冷媒液とな らなかった冷媒蒸気を冷却水を用いて冷却液化して冷媒液にし蒸発器２５へ送り 込む。蒸発器２５は内部に冷却すべき循環水が流れる伝熱管（冷水器）２５Ａが 配設され、伝熱管２５Ａに凝縮器２４から送られてくる冷媒液を散布器２５Ｂを 用いて散布し、冷媒液が冷媒蒸気となるときの気化熱を利用して循環水を冷却し て冷水にする。吸収器２６は低温再生器２３から低温溶液熱交換器２８を通って きた濃溶液が導入され上部に設けられた散布器２６Ｂを用いて散布・滴下され、 この濃溶液は蒸発器２５内で気化した冷媒蒸気を吸収する。吸収器２６の吸収作 用によって蒸発器２５内は高真空が確保されており、蒸発器２５内の伝熱管２５ Ａ上に散布された冷媒液は直ちに蒸発できるようになっている。また、吸収器２ ６には濃溶液が冷媒蒸気を吸収して稀溶液となる際の冷却のための冷却手段２６ Ａが配設されている。この冷却手段２６Ａはコイル状パイプで構成されており、 凝縮器２４内の冷却手段２４Ａとも連なっており、内部を冷却水が循環するよう になっている。高温溶液熱交換器２７は高温の中間濃溶液と低温の稀溶液との間 で熱交換し、また、低温溶液熱交換器２８は高温の濃溶液と低温の稀溶液との間 で熱交換を行い、高温側と低温側とに２段に設けて熱交換効率の向上を図ってい る。溶液循環ポンプ２９は吸収器２６において冷媒蒸気を吸収して稀溶液となっ たものを低温溶液熱交換器２８および高温溶液熱交換器２７を介して高温再生器 ２１に送り、再び循環させるために設けられている。なお、符号３０は冷暖房切 替弁であり、この冷暖房切替弁３０は分離器２２と蒸発器２５および吸収器２６ の間の配管の途中に設けられており、暖房時には高温再生器２１で発生した高温 の冷媒蒸気を分離器２２を介して直接蒸発器２５へ導入し伝熱管（温水器）２５ Ａで循環水と熱交換して温水を得るようになっている。 An embodiment of the present invention will be described below with reference to the drawings. Prior to explaining the heat exchanger of the absorption refrigerator, an outline of a general absorption refrigerator will be described with reference to FIG. In FIG. 3, the high temperature regenerator 21 has a combustion chamber housed therein, heats a dilute solution having a low concentration by absorbing the refrigerant, and generates a refrigerant vapor from the dilute solution. The separator 22 evaporates the refrigerant vapor to separate the intermediate concentrated solution having a high concentration from the refrigerant vapor, and sends the former to the high temperature solution heat exchanger 27 and the latter to the low temperature regenerator 23. The low temperature regenerator 23 reheats the intermediate concentrated solution whose temperature has been lowered by the high temperature solution heat exchanger 27 with the refrigerant vapor coming from the separator 22 to generate further refrigerant vapor from the intermediate concentrated solution, which is then condensed. 24, and the intermediate concentrated solution itself is made into a concentrated solution, and the refrigerant vapor coming from the separator 22 is partially condensed to be a refrigerant liquid and sent to the condenser 24. The condenser 24 cools and liquefies the refrigerant vapor generated in the low-temperature regenerator 23 and the refrigerant vapor that has not become the refrigerant liquid in the low-temperature regenerator 23 by using cooling water to form a refrigerant liquid and send it to the evaporator 25. The evaporator 25 is provided with a heat transfer tube (cooler) 25A through which circulating water to be cooled flows, and the refrigerant liquid sent from the condenser 24 is sprayed to the heat transfer tube 25A by using the sprayer 25B. The circulating water is cooled to cold water by utilizing the heat of vaporization when the liquid becomes refrigerant vapor. In the absorber 26, the concentrated solution that has passed through the low temperature solution heat exchanger 28 from the low temperature regenerator 23 is introduced and sprayed and dropped using the sprayer 26B provided at the upper part, and this concentrated solution is vaporized in the evaporator 25. Absorbs the generated refrigerant vapor. A high vacuum is secured in the evaporator 25 by the absorption operation of the absorber 26, and the refrigerant liquid sprinkled on the heat transfer tubes 25A in the evaporator 25 can be immediately evaporated. Further, the absorber 26 is provided with a cooling means 26A for cooling when the concentrated solution absorbs the refrigerant vapor and becomes a diluted solution. The cooling means 26A is composed of a coiled pipe and is also connected to the cooling means 24A in the condenser 24 so that the cooling water circulates inside. The high temperature solution heat exchanger 27 exchanges heat between the high temperature intermediate concentrated solution and the low temperature diluted solution, and the low temperature solution heat exchanger 28 exchanges heat between the high temperature concentrated solution and the low temperature diluted solution. In order to improve the heat exchange efficiency, two stages are provided on the high temperature side and the low temperature side. The solution circulation pump 29 absorbs the refrigerant vapor in the absorber 26 to form a dilute solution, sends it to the high temperature regenerator 21 via the low temperature solution heat exchanger 28 and the high temperature solution heat exchanger 27, and circulates it again. It is provided. Reference numeral 30 is an air-conditioning switching valve, which is provided in the middle of the pipe between the separator 22 and the evaporator 25 and the absorber 26, and is generated in the high temperature regenerator 21 during heating. High-temperature refrigerant vapor is introduced directly into the evaporator 25 through the separator 22 and heat exchange with circulating water is performed in the heat transfer tube (water heater) 25A to obtain hot water.
【０００８】 本考案は図３に示される吸収式冷凍機の例えば蒸発器２５、吸収器２６、凝縮 器２４、および低温再生器２３等に用いられるものであって、その実施例は図１ に示されるごとく熱伝導性の良い薄い板を連続的に折り曲げて波形形状の蛇腹フ ィン１を形成し、この蛇腹フィン１の山部と谷部とで形成される室を確保するた め端面をシールするようにシールプレート２，３を設けて一体化して熱交換器を 形成している。図１はこの熱交換器の概略構成図であり、図１（ａ）はこの熱交 換器を鉛直方向に縦形にして用いる場合の正面図であり、図１（ｂ）はそのＡ− Ａ矢視図である。図１において、蛇腹フィン１と側板４とで形成される密閉され た一方の室５には下部に入口６が、上部に出口７が設けられている。また、他方 の室８には網９が挿入され、この熱交換器の上方に配設された散布器１０からこ の室８に冷媒液または溶液が滴下されるようになっている。挿入される網９とし てはエキスパンドメタルが一般的に使用されるが、特に、デッキプレート状のも のが有効である。そして、網９に付着した冷媒または溶液が伝熱面側に流れ、拡 散させるようにしてやれば更によい。このように、折り曲げプレートで仕切られ た冷媒および／または溶液の通る室８に網９を挿入することにより、炉中ロー付 けの際の熱歪による流路の断面積の減少によって熱交換効率が低下するのを防止 することができる。以下に、この熱交換器を蒸発器２５、吸収器２６、凝縮器２ ４、および低温再生器２３等に用いた場合の作用について説明する。The present invention is used in, for example, the evaporator 25, the absorber 26, the condenser 24, and the low temperature regenerator 23 of the absorption refrigerator shown in FIG. 3, and the embodiment thereof is shown in FIG. As shown, a thin plate with good thermal conductivity is continuously bent to form a corrugated bellows fin 1, and an end face is formed to secure a chamber formed by the peaks and valleys of the bellows fin 1. The seal plates 2 and 3 are provided so as to seal the two and are integrated to form a heat exchanger. FIG. 1 is a schematic configuration diagram of this heat exchanger, FIG. 1 (a) is a front view when the heat exchanger is used in a vertically vertical form, and FIG. 1 (b) is its A-A. It is an arrow view. In FIG. 1, an inlet 6 is provided in the lower part and an outlet 7 is provided in the upper part of one closed chamber 5 formed by the bellows fin 1 and the side plate 4. In addition, a net 9 is inserted into the other chamber 8 so that a refrigerant liquid or a solution is dripped into the chamber 8 from a sprayer 10 arranged above the heat exchanger. Expanded metal is generally used as the net 9 to be inserted, but a deck plate-like one is particularly effective. Then, it is more preferable that the refrigerant or solution attached to the net 9 flows toward the heat transfer surface side and is dispersed. In this way, by inserting the net 9 into the chamber 8 through which the refrigerant and / or solution partitioned by the bent plate passes, the cross-sectional area of the flow path is reduced due to thermal strain during brazing in the furnace, and the heat exchange efficiency is reduced. Can be prevented from decreasing. The operation when this heat exchanger is used in the evaporator 25, the absorber 26, the condenser 24, the low temperature regenerator 23, etc. will be described below.
【０００９】 蒸発器２５に用いた場合、図１において、蛇腹フィン１と側板４とで形成され る密閉された一方の室５の入口６から冷水（暖房時は温水）が流入し、その上部 に配設された出口７から冷水は流出する。これに対し、他方の室８には、凝縮器 ２４からくる冷媒液が散布器１０から滴下され、この冷媒液が冷媒蒸気となると きの気化熱を利用して冷水を冷却する。この場合、蛇腹フィン１の表面は濡れ性 の向上のためにサンドブラストにより表面粗度を荒くするか、または転造加工に よるローレット加工によって表面粗度を荒くしている。この実施例では、さらに 冷媒液の通る室８に網９を挿入したので、冷媒の横方向への濡れ広がり性を向上 させることができ、伝熱効率の改良にもなった。When used in the evaporator 25, in FIG. 1, cold water (hot water during heating) flows in through an inlet 6 of one of the closed chambers 5 formed by the bellows fins 1 and the side plates 4, and its upper part. Cold water flows out from the outlet 7 arranged in the. On the other hand, the refrigerant liquid coming from the condenser 24 is dropped into the other chamber 8 from the sprayer 10, and the cold water is cooled by utilizing the heat of vaporization when the refrigerant liquid becomes the refrigerant vapor. In this case, the surface of the bellows fin 1 is roughened by sandblasting to improve the wettability or knurled by rolling to roughen the surface. In this embodiment, since the net 9 is further inserted in the chamber 8 through which the refrigerant liquid passes, the wetting and spreading property of the refrigerant in the lateral direction can be improved and the heat transfer efficiency can be improved.
【００１０】 吸収器２６に用いた場合、図１において、蛇腹フィン１と側板４とで形成され る密閉された一方の室５の入口６から冷却水が流入し、その上部に配設された出 口７から冷却水は流出する。これに対し、他方の室８には、低温再生器２３から 低温溶液熱交換器２８を経てくる濃溶液が散布器１０から滴下されると同時に蒸 発器２５からくる冷媒蒸気が流入する。その結果、蛇腹フィン１の薄板を介し、 冷却水と濃溶液および冷媒蒸気とが熱交換することによって、この両者は冷却さ れ濃溶液が冷媒を吸収して稀溶液となる。この場合も蛇腹フィン１の表面は濡れ 性の向上を図る必要があり、サンドブラストまたは転造加工によるローレット加 工により表面粗度を荒くしているが、この実施例では、さらに濃溶液および冷媒 蒸気が通る室８に網９を挿入したので、吸収溶液の横方向への濡れ広がり性の向 上と撹拌性の向上とにより、伝熱効率および吸収性能の改良となった。When used in the absorber 26, in FIG. 1, cooling water flows in from an inlet 6 of one chamber 5 which is formed by the bellows fin 1 and the side plate 4 and which is hermetically sealed, and is disposed above the cooling water. The cooling water flows out from the outlet 7. On the other hand, in the other chamber 8, the concentrated solution flowing from the low temperature regenerator 23 through the low temperature solution heat exchanger 28 is dropped from the sprayer 10 and at the same time the refrigerant vapor coming from the evaporator 25 flows. As a result, the cooling water exchanges heat with the concentrated solution and the refrigerant vapor through the thin plate of the bellows fin 1, both of them are cooled, and the concentrated solution absorbs the refrigerant to become a dilute solution. In this case as well, it is necessary to improve the wettability of the surface of the bellows fin 1, and the surface roughness is roughened by knurling by sandblasting or rolling. However, in this embodiment, the concentrated solution and the refrigerant vapor are further increased. Since the net 9 is inserted into the chamber 8 through which the heat transfer efficiency is improved, the heat transfer efficiency and the absorption performance are improved by improving the lateral spreading property of the absorbing solution and improving the stirring property.
【００１１】 凝縮器２４に用いた場合、図１において、蛇腹フィン１と側板４とで形成され る密閉された一方の室５の入口６から冷却水が流入し、その上部に配設された出 口７から冷却水は流出する。これに対し、他方の室８にも側板（図示していない ）を設けて閉室とし、低温再生器２３からくる冷媒蒸気がこの閉室８の上方向か ら封入され下方へと流下する。その結果、蛇腹フィン１の薄板を介して冷却水と 冷媒蒸気とが熱交換することによって、冷媒蒸気は冷却されて冷媒液となって下 方部に配設された冷媒液取出口（図示していない）から流出する。この実施例に おいても、冷媒蒸気が通る閉室８に網９を挿入したので、冷媒の横方向への濡れ 広がり性を向上させることができ、伝熱効率の改良になる。When used in the condenser 24, in FIG. 1, cooling water flows from an inlet 6 of one of the closed chambers 5 formed by the bellows fins 1 and the side plates 4, and is arranged above the cooling water. The cooling water flows out from the outlet 7. On the other hand, the other chamber 8 is also closed by providing a side plate (not shown), and the refrigerant vapor coming from the low temperature regenerator 23 is sealed from above the closed chamber 8 and flows downward. As a result, heat exchange between the cooling water and the refrigerant vapor through the thin plate of the bellows fin 1 causes the refrigerant vapor to be cooled and become a refrigerant liquid, which is a refrigerant liquid outlet (illustrated in the figure) disposed in the lower portion. Not)). Also in this embodiment, since the net 9 is inserted in the closed chamber 8 through which the refrigerant vapor passes, the wetting and spreading property of the refrigerant in the lateral direction can be improved and the heat transfer efficiency can be improved.
【００１２】 低温再生器２３に用いた場合、図１において、蛇腹フィン１と側板４とで形成 される密閉された一方の室５の上部に配設された出口７から、分離器２２を通っ てくる高温の冷媒蒸気を流入させ、下部に配設された入口６から冷媒液を回収す るようにする。これに対し、他方の室８にも側板（図示していない）を設けて閉 室とし、高温溶液熱交換器２７を通ってくる中間濃溶液がこの閉室８の上方向か ら滴下され下方へと流下する。その結果、蛇腹フィン１の薄板を介して高温の冷 媒蒸気と中間濃溶液が熱交換することによって、中間濃溶液からさらに冷媒蒸気 を沸騰して蒸発させた後、閉室８の下方より濃溶液を回収するようにする。この 場合も蛇腹フィン１の表面は濡れ性の向上を図る必要があり、サンドブラストま たは転造加工によるローレット加工により表面粗度を荒くしているが、この実施 例においても、中間濃溶液が通る閉室８に網９を挿入したので、中間濃溶液の横 方向への濡れ広がり性の向上と撹拌性の向上とにより、伝熱効率および沸騰伝熱 性の改良となった。When used in the low temperature regenerator 23, in FIG. 1, a separator 22 is passed through an outlet 7 provided at an upper portion of one closed chamber 5 formed by a bellows fin 1 and a side plate 4. The incoming high-temperature refrigerant vapor is caused to flow in, and the refrigerant liquid is recovered from the inlet 6 provided in the lower portion. On the other hand, a side plate (not shown) is also provided in the other chamber 8 to close the chamber, and the intermediate concentrated solution passing through the high temperature solution heat exchanger 27 is dripped from above the closed chamber 8 and goes downward. And flows down. As a result, heat exchange between the high-temperature cooling medium vapor and the intermediate concentrated solution through the thin plate of the bellows fin 1 causes the refrigerant vapor to further boil and evaporate from the intermediate concentrated solution, and then the concentrated solution from below the closed chamber 8. To collect. In this case as well, it is necessary to improve the wettability of the surface of the bellows fin 1, and the surface roughness is roughened by knurling by sandblasting or rolling. Since the net 9 was inserted into the closed chamber 8 through which the heat was transferred, the heat transfer efficiency and the boiling heat transfer property were improved by improving the lateral wetting and spreading property of the intermediate concentrated solution and the stirring property.
【００１３】 また、蒸発器２５、吸収器２６、および凝縮器２４にこの熱交換器を用いる場 合、図２に示すように、室８に加えて冷水（または温水）および冷却水の通る室 ５の側にも網９を挿入してもよい。こうすることによって、水に乱流作用を発生 させ伝熱効率の向上を図ると共に両室５および８に網９を挿入することにより炉 中ロー付けの際に生じる熱歪をさらに少なくすることができる。When this heat exchanger is used for the evaporator 25, the absorber 26, and the condenser 24, as shown in FIG. 2, in addition to the chamber 8, a chamber through which cold water (or hot water) and cooling water pass. The net 9 may be inserted also on the side of 5. By doing so, a turbulent flow action is generated in the water to improve the heat transfer efficiency, and by inserting the net 9 into both chambers 5 and 8, the thermal strain generated during brazing in the furnace can be further reduced. ..
【００１４】[0014]
以上、説明したように、本考案の吸収式冷凍機によれば薄板の連続折り曲げに より加工した波形形状の蛇腹フィンとこの蛇腹フィンの山部と谷部とから形成さ れる室により熱交換を行う場合に、冷媒および／または溶液の通る室に網を挿入 したので冷媒や溶液の横方向への濡れ広がり性を向上して伝熱効率が良くなり、 また、溶液では撹拌性の向上もみられ伝熱効率と吸収性能または沸騰伝熱性の改 良となる。冷水（または温水）や冷却水の通る室の側にも網を挿入してやると乱 流作用により伝熱効率の改良も図ることができる。その結果、熱交換効率も向上 する。さらに、炉中ロー付けの際の熱歪による熱交換効率への影響をも少なくす ることができる。 As described above, according to the absorption refrigerator of the present invention, heat exchange is performed by the corrugated bellows fins formed by continuous bending of thin plates and the chamber formed by the peaks and valleys of the bellows fins. When doing so, a mesh was inserted in the chamber through which the refrigerant and / or solution pass, so that the wetting and spreading properties of the refrigerant and solution in the lateral direction are improved, and the heat transfer efficiency is improved. Improves thermal efficiency and absorption performance or boiling heat transfer. If a net is inserted also on the side of the chamber through which cold water (or hot water) or cooling water passes, the heat transfer efficiency can be improved by the turbulent action. As a result, heat exchange efficiency is also improved. Further, it is possible to reduce the influence on the heat exchange efficiency due to the thermal strain when brazing in the furnace.
【図１】本考案による吸収式冷凍機の熱交換器の一実施
例の概略構成図を示すものである。FIG. 1 is a schematic configuration diagram of an embodiment of a heat exchanger of an absorption refrigerator according to the present invention.
【図２】本考案による吸収式冷凍機の熱交換器の別の実
施例の概略構成図を示すものである。FIG. 2 is a schematic configuration diagram of another embodiment of the heat exchanger of the absorption refrigerator according to the present invention.
【図３】一般的な吸収式冷凍機の概略構成図を示すもの
である。FIG. 3 shows a schematic configuration diagram of a general absorption refrigerator.
【図４】従来技術を説明するための図である。FIG. 4 is a diagram for explaining a conventional technique.
【図５】従来技術の欠点を説明するための図である。FIG. 5 is a diagram for explaining a drawback of the conventional technique.
１ 蛇腹フィン ２，３ シールプレート ４ 側板 ５ 室 ６ 入口 ７ 出口 ８ 室 ９ 網 １０ 散布器 1 bellows fins 2, 3 seal plate 4 side plate 5 chamber 6 inlet 7 outlet 8 chamber 9 mesh 10 spreader
───────────────────────────────────────────────────── フロントページの続き (72)考案者 頓宮 伸二 静岡県浜松市子安町1370 矢崎総業株式会 社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Shinji Tonmiya 1370 Koyasu-cho, Hamamatsu-shi, Shizuoka Yazaki General Stock Company In-house
Claims (4)
と、該高温再生器で加熱された溶液を冷媒蒸気および中
間濃溶液に分離する分離器と、該分離器からの中間濃溶
液を稀溶液と熱交換する高温溶液熱交換器と、該高温溶
液熱交換器により温度が低下した中間濃溶液を前記分離
器からくる冷媒蒸気で再加熱し中間濃溶液の中からさら
に冷媒蒸気を発生させ濃溶液とする低温再生器と、該低
温再生器で発生した冷媒蒸気を冷却液化して冷媒液にす
る凝縮器と、該凝縮器からの冷媒液を冷水器に散布して
冷水器から冷水を得る蒸発器と、前記低温再生器から低
温溶液熱交換器を通って熱交換を行ってくる濃溶液が散
布され前記蒸発器で気化した冷媒蒸気を吸収する吸収器
と、該吸収器にて冷媒を吸収した稀溶液を熱交換器を介
して前記高温再生器に送る溶液循環ポンプとを有する吸
収冷凍機において、前記蒸発器、吸収器、凝縮器、およ
び低温再生器のうちの少なくとも一つを、薄板の連続折
り曲げにより加工した波形形状の蛇腹フィンと、該蛇腹
フィンの山部と谷部とから形成される室を端面でシール
するシールプレートとからなる熱交換器で構成するとと
もに、前記室のうち冷媒および／または溶液の通る室に
網を挿入したことを特徴とする吸収式冷凍機。1. A high temperature regenerator for heating a dilute solution with a heating source, a separator for separating the solution heated by the high temperature regenerator into a refrigerant vapor and an intermediate concentrated solution, and an intermediate concentrated solution from the separator. A high temperature solution heat exchanger that exchanges heat with a dilute solution, and an intermediate concentrated solution whose temperature has been lowered by the high temperature solution heat exchanger is reheated by a refrigerant vapor coming from the separator to generate further refrigerant vapor from the intermediate concentrated solution. A low temperature regenerator to make a concentrated solution, a condenser that liquefies the refrigerant vapor generated in the low temperature regenerator into a refrigerant liquid, and a refrigerant liquid from the condenser is sprayed to a chiller to cool water from the chiller. And an absorber for absorbing a refrigerant vapor vaporized in the evaporator, in which the concentrated solution that carries out heat exchange from the low temperature regenerator through the low temperature solution heat exchanger is dispersed, and the absorber. The dilute solution that has absorbed the refrigerant is transferred to the high temperature regenerator through a heat exchanger. In an absorption refrigerator having a solution circulating pump for feeding, at least one of the evaporator, the absorber, the condenser, and the low-temperature regenerator is formed by corrugated bellows fins formed by continuous bending of a thin plate, and the bellows. The heat exchanger is composed of a seal plate that seals the chamber formed by the peaks and valleys of the fins at the end faces, and a mesh is inserted in the chamber through which the refrigerant and / or solution passes. A characteristic absorption refrigerator.
器で構成する場合、蛇腹フィンの山部と谷部とから形成
される室の一方を閉室とし、鉛直方向の下方から冷水
（または温水）を導入して上方から排出するようにし、
他方の室にこの蛇腹フィンの上方から冷媒液を滴下する
とともに、前記冷水（または温水）を導入する室にも網
を挿入したことを特徴とする吸収式冷凍機。2. The evaporator according to claim 1, wherein when the evaporator is constituted by the heat exchanger, one of the chambers formed by the peaks and valleys of the bellows fins is closed, and cold water (or cold water is supplied from below in the vertical direction). Hot water) is introduced and discharged from above,
An absorption chiller characterized in that a refrigerant liquid is dropped into the other chamber from above the bellows fin, and a net is also inserted in the chamber for introducing the cold water (or hot water).
器で構成する場合、蛇腹フィンの山部と谷部とから形成
される室の一方を閉室とし、鉛直方向の下方から冷却水
を導入して上方から排出するようにし、他方の室にこの
蛇腹フィンの上方から濃溶液を滴下しつつ冷媒蒸気が通
過できるようにするとともに、前記冷却水を導入する室
にも網を挿入したことを特徴とする吸収式冷凍機。3. When the absorber is formed of the heat exchanger according to claim 1, one of the chambers formed by the peaks and valleys of the bellows fins is closed, and cooling water is supplied from below in the vertical direction. It is introduced and discharged from the upper side, while allowing the refrigerant vapor to pass while dropping the concentrated solution from above the bellows fin to the other chamber, and also inserting a net in the chamber introducing the cooling water. Absorption refrigerator.
器で構成する場合、蛇腹フィンの山部と谷部とから形成
される室の一方を閉室とし、鉛直方向の下方から冷却水
を導入して上方から排出するようにし、他方の室も閉室
として上方から冷媒蒸気を流入させ下方から冷媒液を回
収するようにするとともに、前記冷却水を導入する室に
も網を挿入したことを特徴とする吸収式冷凍機。4. In claim 1, when the condenser is constituted by the heat exchanger, one of the chambers formed by the peaks and valleys of the bellows fins is closed, and cooling water is supplied from below in the vertical direction. It is introduced and discharged from the upper side, the other chamber is also closed so that the refrigerant vapor is introduced from the upper side and the refrigerant liquid is recovered from the lower side, and the net is also inserted in the chamber for introducing the cooling water. A characteristic absorption refrigerator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP760292U JP2529150Y2 (en) | 1992-02-21 | 1992-02-21 | Absorption refrigerator |
| US07/911,554 US5282507A (en) | 1991-07-08 | 1992-07-08 | Heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP760292U JP2529150Y2 (en) | 1992-02-21 | 1992-02-21 | Absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0569568U true JPH0569568U (en) | 1993-09-21 |
| JP2529150Y2 JP2529150Y2 (en) | 1997-03-19 |
Family
ID=11670352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP760292U Expired - Lifetime JP2529150Y2 (en) | 1991-07-08 | 1992-02-21 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2529150Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103685A (en) * | 1993-10-06 | 1995-04-18 | Kansai Electric Power Co Inc:The | Vapor-liquid contact plate type heat exchanger |
| WO2015056290A1 (en) * | 2013-10-15 | 2015-04-23 | 隆啓 阿賀田 | Method for improving fluid flow characteristics, heat exchanger in which improvement method is carried out, distillation device, deodorization device, and slit-and-stretched sheet used in improvement method |
-
1992
- 1992-02-21 JP JP760292U patent/JP2529150Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103685A (en) * | 1993-10-06 | 1995-04-18 | Kansai Electric Power Co Inc:The | Vapor-liquid contact plate type heat exchanger |
| WO2015056290A1 (en) * | 2013-10-15 | 2015-04-23 | 隆啓 阿賀田 | Method for improving fluid flow characteristics, heat exchanger in which improvement method is carried out, distillation device, deodorization device, and slit-and-stretched sheet used in improvement method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2529150Y2 (en) | 1997-03-19 |
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