JPH0777366A - Vertical type low temperature regenerator - Google Patents
Vertical type low temperature regeneratorInfo
- Publication number
- JPH0777366A JPH0777366A JP24744593A JP24744593A JPH0777366A JP H0777366 A JPH0777366 A JP H0777366A JP 24744593 A JP24744593 A JP 24744593A JP 24744593 A JP24744593 A JP 24744593A JP H0777366 A JPH0777366 A JP H0777366A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- low temperature
- liquid
- temperature regenerator
- refrigerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、吸収冷凍機、吸収冷温
水機などの低温再生器、詳しくは、伝熱管を星型（放射
状）に配列した縦型低温再生器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low temperature regenerator such as an absorption refrigerating machine and an absorption chiller / heater, and more particularly to a vertical low temperature regenerator having heat transfer tubes arranged in a star shape (radial).
【０００２】[0002]
【従来の技術】従来、吸収剤として例えば、臭化リチウ
ムを用い、冷媒として例えば、水を用いる吸収冷温水機
が一般に知られている。従来の吸収冷温水機は、一例と
して、図４に示すような構成である。１は上部低温胴
で、低温再生器２及び凝縮器３から構成され、さらに凝
縮器３内の下部には冷媒溜り４が設けられる。５は下部
低温胴で、蒸発器６及び吸収器７で構成される。８は高
温再生器で、燃焼室９、熱回収器１０、気液分離器１
１、排気筒１２及び燃焼装置１３から構成される。その
他に、低温熱交換器１４、高温熱交換器１５などが構成
機器となる。吸収器７内の下部の液溜り１６の希液は、
低温ポンプ１７により管路１８、１９、低温熱交換器１
４、管路２０を経て、低温再生器２に送られる。この希
液は管路２１から流入してくる高温の冷媒蒸気によって
加熱され、中間濃度まで濃縮される。2. Description of the Related Art Conventionally, an absorption chiller-heater using, for example, lithium bromide as an absorbent and water as a refrigerant is generally known. The conventional absorption chiller-heater has a structure as shown in FIG. 4 as an example. Reference numeral 1 denotes an upper low temperature cylinder, which is composed of a low temperature regenerator 2 and a condenser 3, and a refrigerant reservoir 4 is provided in the lower portion of the condenser 3. Reference numeral 5 denotes a lower cold cylinder, which is composed of an evaporator 6 and an absorber 7. 8 is a high temperature regenerator, which is a combustion chamber 9, a heat recovery device 10, a gas-liquid separator 1.
1, an exhaust stack 12 and a combustion device 13. In addition, the low temperature heat exchanger 14, the high temperature heat exchanger 15 and the like are constituent devices. The dilute liquid in the lower liquid pool 16 in the absorber 7 is
Pipes 18, 19 by the low-temperature pump 17, low-temperature heat exchanger 1
4, sent to the low temperature regenerator 2 via the pipe 20. This dilute liquid is heated by the high-temperature refrigerant vapor flowing from the pipe 21 and concentrated to an intermediate concentration.
【０００３】この中間濃度の液は二分される。二分され
た液の一方は、高温ポンプ２２により管路２３、２４、
高温熱交換器１５、管路２５を経て高温再生器８に送ら
れる。この中間濃度液は燃焼装置１３によって加熱さ
れ、熱回収器１０を上昇し、気液分離器１１に入り、冷
媒蒸気と濃液とに分離される。この濃液は高温再生器８
内の圧力約６５０mmHgと、下部低温胴５の内部の圧力約
６mmHgとの差圧により、濃液管路２６、高温熱交換器１
５、管路２７を経て、先に分流してきた管路２８からの
中間液（二分された液の他方）と混合し、混合濃液にな
って低温熱交換器１４に入り、管路２９を通り散布装置
３０により、吸収器７の伝熱管上に散布され、液溜り１
６に戻る循環がなされる。The liquid having this intermediate concentration is divided into two. One of the two halves of the liquid is supplied by the high temperature pump 22 to the pipe lines 23, 24,
It is sent to the high temperature regenerator 8 via the high temperature heat exchanger 15 and the pipe 25. The intermediate concentration liquid is heated by the combustion device 13, rises in the heat recovery device 10, enters the gas-liquid separator 11, and is separated into a refrigerant vapor and a concentrated liquid. This concentrated liquid is a high temperature regenerator 8
Due to the pressure difference between the internal pressure of approximately 650 mmHg and the internal pressure of the lower low temperature cylinder 5 of approximately 6 mmHg, the concentrated liquid pipe line 26 and the high temperature heat exchanger 1
5. After passing through the pipe line 27, it is mixed with the intermediate liquid (the other of the two divided liquids) from the pipe line 28 which has been previously branched, and becomes a mixed concentrated liquid and enters the low temperature heat exchanger 14, and the pipe line 29 is passed. The passing spraying device 30 sprays the heat transfer tubes of the absorber 7 to form the liquid pool 1
The circulation returning to 6 is made.
【０００４】一方、気液分離器１１で分離された冷媒蒸
気は、管路２１を経て低温再生器２に入り、液を加熱し
て凝縮・液化し、管路４６から凝縮器３に入る。また低
温再生器２において、希液が中間濃度液に濃縮されると
きに発生した冷媒蒸気は、上部空間から凝縮器３に入っ
て凝縮し、冷媒液となる。これらの凝縮した冷媒水は、
管路３１を経て蒸発器６に入り、下部溜り３２に貯留さ
れる。この冷媒水は冷媒ポンプ３３により管路３４、３
５を経て、散布装置３６により蒸発器６の伝熱管上に散
布される。On the other hand, the refrigerant vapor separated in the gas-liquid separator 11 enters the low temperature regenerator 2 via the pipe 21, heats the liquid to condense and liquefy, and then enters the condenser 3 from the pipe 46. Further, in the low temperature regenerator 2, the refrigerant vapor generated when the dilute liquid is concentrated to the intermediate concentration liquid enters the condenser 3 from the upper space and is condensed to become the refrigerant liquid. These condensed refrigerant waters are
It enters the evaporator 6 through the pipe line 31, and is stored in the lower pool 32. This refrigerant water is supplied to the pipelines 34 and 3 by the refrigerant pump 33.
After 5, the spraying device 36 sprays the heat on the heat transfer tubes of the evaporator 6.
【０００５】冷房に供するための冷水は、管路３７から
蒸発器６に入り、滴下する冷媒の蒸発潜熱により冷却さ
れ、管路３８から流出する。冷却水は管路３９、４０、
４１を経て流出し、途中の吸収器７では吸収熱を、凝縮
器３では凝縮熱を奪い系外に持ち出す。また、冷暖切替
弁６０を開き、さらに管路３９に供給する冷却水を止め
ることにより、管路３８から温水を得ることができる。
図４に示すように、従来の低温再生器２は、高温再生器
８で発生した冷媒蒸気を吸収器７から流出してくる希溶
液で冷却し、冷媒液とすると同時に希溶液を加熱して溶
液濃度を濃くし、冷媒液を再生するものが一般的であっ
た。Cold water to be used for cooling enters the evaporator 6 from the pipe 37, is cooled by the latent heat of vaporization of the dropping refrigerant, and flows out from the pipe 38. The cooling water is supplied to the pipes 39, 40,
After passing through 41, it flows out and the absorption heat in the absorber 7 and the condensation heat in the condenser 3 are taken away and taken out of the system. Further, by opening the cooling / heating switching valve 60 and stopping the cooling water supplied to the pipe 39, hot water can be obtained from the pipe 38.
As shown in FIG. 4, the conventional low temperature regenerator 2 cools the refrigerant vapor generated in the high temperature regenerator 8 with the dilute solution flowing out from the absorber 7 to form the refrigerant liquid and at the same time heat the dilute solution. It was common to regenerate the refrigerant liquid by increasing the solution concentration.
【０００６】[0006]
【発明が解決しようとする課題】上記の吸収冷温水機に
おける低温再生器として、多数の伝熱管を縦方向に設置
した縦型の低温再生器が用いられることがある。この場
合、冷媒入口部における冷媒は気体であるが、冷媒出口
部における冷媒は凝縮して液体となっているので、多数
の伝熱管の外側における圧力損失が、冷媒入口部と冷媒
出口部とで異なることになる。このため、縦型低温再生
器を設計する場合は、多数の伝熱管の間隔を、圧力損失
の大きい冷媒入口部に合わさなければならず、全体が大
型化するという問題点がある。As the low temperature regenerator in the absorption chiller-heater, a vertical type low temperature regenerator having a large number of heat transfer tubes installed in a vertical direction may be used. In this case, the refrigerant at the refrigerant inlet is a gas, but the refrigerant at the refrigerant outlet is condensed into a liquid, so the pressure loss at the outside of the many heat transfer tubes is at the refrigerant inlet and the refrigerant outlet. It will be different. For this reason, when designing the vertical low temperature regenerator, the intervals of a large number of heat transfer tubes must be matched with the refrigerant inlet portion with a large pressure loss, and there is a problem in that the overall size increases.
【０００７】本発明は上記の点に鑑みなされたもので、
本発明の目的は、伝熱管の横断面を略卵形として星型
（放射状）に配列し、外側から体積の大きい冷媒蒸気を
中心部に向かって流入させながら、伝熱管内の吸収液で
冷却させ、冷媒蒸気を凝縮させながら体積を減少させ、
通路面積の小さい中心部へと流入させるように構成する
ことにより、全体をコンパクトにまとめることができる
縦型低温再生器を提供することにある。The present invention has been made in view of the above points,
An object of the present invention is to arrange the heat transfer tubes in a star shape (radial shape) with a substantially oval cross section, and to cool the refrigerant with absorbing liquid in the heat transfer tubes while allowing a large volume of refrigerant vapor to flow from the outside toward the center. To reduce the volume while condensing the refrigerant vapor,
It is an object of the present invention to provide a vertical low temperature regenerator that can be compactly assembled by being configured to flow into a central portion having a small passage area.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の縦型低温再生器は、複数の曲率半径を有
する曲面で形成された横断面が略卵形の複数の伝熱管
を、縦方向に、かつ、横断面の長軸が放射状になるよう
に本体ケーシング内に収納し、伝熱管の外側に冷媒蒸気
を流し、伝熱管の内側に吸収液を流すようにしたことを
特徴としている。In order to achieve the above object, the vertical low temperature regenerator of the present invention has a plurality of heat transfer tubes each having a substantially oval cross section and formed by a curved surface having a plurality of radii of curvature. Was housed in the main body casing in a vertical direction and with the long axis of the cross section being radial, and the refrigerant vapor was made to flow outside the heat transfer tube and the absorbing liquid was made to flow inside the heat transfer tube. It has a feature.
【０００９】上記の縦型低温再生器において、伝熱管が
一定曲率半径表面（ＣＣＳ、ｃｏｎｓｔａｎｔ ｃｕｒ
ｖａｔｕｒｅ ｓｕｒｆａｃｅ）を有することが好まし
い。さらに、一定曲率半径表面は、伝熱管の内面に設け
られることが好ましい。In the above vertical low temperature regenerator, the heat transfer tube has a constant curvature radius surface (CCS, constant curr).
It is preferable to have a voltage surface). Further, the constant radius of curvature surface is preferably provided on the inner surface of the heat transfer tube.
【００１０】[0010]
【実施例】以下、図面を参照して本発明の好適な実施例
を詳細に説明する。ただし、この実施例に記載されてい
る構成部材の形状、その相対配置などは、とくに特定的
な記載がない限りは、本発明の範囲をそれらのみに限定
する趣旨のものではなく、単なる説明例にすぎない。 実施例１ 図１は本実施例における縦型低温再生器の縦断面を示
し、図２は図１におけるＡ−Ａ線断面を示している。６
２は本体ケーシングで、このケーシング６２内に、複数
の曲率半径を有する曲面で形成された横断面が略卵形の
伝熱管６４が複数本、縦方向に、かつ、横断面の長軸が
放射状（星型）になるように配列されている。６６は冷
媒蒸気入口、６８は冷媒液出口、７０は吸収液入口、７
２は濃縮吸収液（中間濃度液）出口、７４は冷媒蒸気出
口、７６は上段仕切板、７８は下段仕切板、７９は堰、
８０は冷媒蒸気と吸収液とを区分する板である。吸収液
が、冷媒蒸気入口６６から流入する冷媒蒸気で加熱され
て濃縮される時に発生する別の冷媒蒸気と、吸収液入口
７０から流入する吸収液とが、この板８０により区分さ
れる。吸収液入口７０から流入した吸収液は、上段仕切
板７６の上側に溜まり、堰７９を越えて伝熱管６４内に
流下する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the drawings. However, the shape of the constituent members described in this embodiment, the relative arrangement, and the like, unless otherwise specified, are not intended to limit the scope of the present invention to only those, but merely illustrative examples. Nothing more. Example 1 FIG. 1 shows a vertical section of a vertical low temperature regenerator in this example, and FIG. 2 shows a section taken along the line AA in FIG. 6
Reference numeral 2 denotes a main body casing, in which a plurality of heat transfer tubes 64 having a curved surface having a plurality of radii of curvature and having a substantially oval cross section are arranged in the longitudinal direction and the major axis of the cross section is radial. They are arranged in a (star) shape. Reference numeral 66 is a refrigerant vapor inlet, 68 is a refrigerant liquid outlet, 70 is an absorption liquid inlet, 7
2 is a concentrated absorbent (intermediate concentration liquid) outlet, 74 is a refrigerant vapor outlet, 76 is an upper partition plate, 78 is a lower partition plate, 79 is a weir,
Reference numeral 80 is a plate that separates the refrigerant vapor and the absorbing liquid. This plate 80 separates another refrigerant vapor generated when the absorbing liquid is heated and concentrated by the refrigerant vapor flowing from the refrigerant vapor inlet 66 and the absorbing liquid flowing from the absorbing liquid inlet 70. The absorbing liquid that has flowed in from the absorbing liquid inlet 70 accumulates on the upper side of the upper partition plate 76, flows over the weir 79, and flows down into the heat transfer tube 64.
【００１１】つぎに本実施例における作用について説明
する。高温再生器の気液分離器で分離された高温の冷媒
蒸気は、冷媒蒸気入口６６から本体ケーシング６２内に
導入されるとともに、低温熱交換器からの吸収液（希
釈）は吸収液入口７０から本体ケーシング６２内に導入
される。導入された吸収液は、伝熱管６４の内側を上方
から下方に流下し、高温の冷媒蒸気は伝熱管６４の外側
を通過する。このとき、高温の冷媒蒸気が吸収液を加熱
して濃縮するとともに、冷媒蒸気は凝縮する。吸収液が
濃縮されるときに発生した冷媒蒸気は、冷媒蒸気出口７
４から凝縮器に導入される。冷媒液は冷媒液出口６８か
ら凝縮器へ送られ、中間濃度に濃縮された濃縮吸収液は
濃縮吸収液出口７２から高温熱交換器及び低温熱交換器
に送られる。Next, the operation of this embodiment will be described. The high-temperature refrigerant vapor separated by the gas-liquid separator of the high-temperature regenerator is introduced from the refrigerant vapor inlet 66 into the main body casing 62, and the absorption liquid (dilution) from the low-temperature heat exchanger is supplied from the absorption liquid inlet 70. It is introduced into the main body casing 62. The introduced absorbing liquid flows down inside the heat transfer tube 64 from above, and the high-temperature refrigerant vapor passes outside the heat transfer tube 64. At this time, the high-temperature refrigerant vapor heats and concentrates the absorbing liquid, and the refrigerant vapor condenses. The refrigerant vapor generated when the absorption liquid is concentrated is the refrigerant vapor outlet 7
It is introduced into the condenser from 4. The refrigerant liquid is sent from the refrigerant liquid outlet 68 to the condenser, and the concentrated absorption liquid concentrated to the intermediate concentration is sent from the concentrated absorption liquid outlet 72 to the high temperature heat exchanger and the low temperature heat exchanger.
【００１２】実施例２ 本実施例は、図３に示すように、伝熱管６４の内面に、
一定曲率半径表面８２（ＣＣＳ）を設けたものであり、
吸収液と冷媒蒸気との熱交換をより効率よく行うように
したものである。他の構成、作用は実施例１の場合と同
様である。Embodiment 2 In this embodiment, as shown in FIG. 3, the inner surface of the heat transfer tube 64 is
Is provided with a constant radius of curvature surface 82 (CCS),
The heat exchange between the absorbing liquid and the refrigerant vapor is performed more efficiently. Other configurations and operations are similar to those of the first embodiment.
【００１３】[0013]
【発明の効果】本発明は上記のように構成されているの
で、つぎのような効果を奏する。 （１） 略卵形の伝熱管を長軸が放射状になるように星
型に配列しているので、伝熱管の外側を通る高温の体積
の大きい冷媒蒸気が、吸収液に熱を与えて自身は凝縮し
体積を減少させながら通路面積の小さい本体ケーシング
中心部へと円滑に流れて行く。このため、再生器の小型
化を図ることができる。 （２） 伝熱管に一定曲率半径表面を設ける場合は、熱
効率が向上するので、さらに、再生器の小型化を図るこ
とができる。Since the present invention is configured as described above, it has the following effects. (1) Since the substantially oval heat transfer tubes are arranged in a star shape so that the major axis becomes radial, the high-temperature, large-volume refrigerant vapor that passes through the outside of the heat transfer tubes gives heat to the absorbing liquid and Is condensed and reduces its volume, and smoothly flows to the central portion of the main body casing with a small passage area. Therefore, the size of the regenerator can be reduced. (2) When the heat transfer tube is provided with a surface having a constant radius of curvature, the thermal efficiency is improved, and thus the regenerator can be further downsized.
【図１】本発明の縦型低温再生器の一実施例を示す縦断
面図である。FIG. 1 is a vertical sectional view showing an embodiment of a vertical low temperature regenerator of the present invention.
【図２】図１におけるＡ−Ａ線拡大断面図である。FIG. 2 is an enlarged sectional view taken along the line AA in FIG.
【図３】本発明の縦型低温再生器の他の実施例を示す横
断面図である。FIG. 3 is a cross-sectional view showing another embodiment of the vertical low temperature regenerator of the present invention.
【図４】従来の吸収冷温水機の一例を示すフローシート
である。FIG. 4 is a flow sheet showing an example of a conventional absorption chiller-heater.
６２ 本体ケーシング ６４ 伝熱管 ６６ 冷媒蒸気入口 ８２ 一定曲率半径表面 62 Main Body Casing 64 Heat Transfer Tube 66 Refrigerant Vapor Inlet 82 Constant Radius of Curvature Surface
Claims (3)
た横断面が略卵形の複数の伝熱管を、縦方向に、かつ、
横断面の長軸が放射状になるように本体ケーシング内に
収納し、伝熱管の外側に冷媒蒸気を流し、伝熱管の内側
に吸収液を流すようにしたことを特徴とする縦型低温再
生器。1. A plurality of heat transfer tubes, each having a substantially oval cross section and formed of curved surfaces having a plurality of radii of curvature, are provided in a longitudinal direction, and
A vertical low-temperature regenerator characterized in that the longitudinal axis of the transverse section is housed in the main casing so as to be radial, the refrigerant vapor is made to flow outside the heat transfer tube, and the absorbing liquid is made to flow inside the heat transfer tube. .
を特徴とする請求項１記載の縦型低温再生器。2. The vertical low temperature regenerator according to claim 1, wherein the heat transfer tube has a surface with a constant radius of curvature.
られたことを特徴とする請求項２記載の縦型低温再生
器。3. The vertical low temperature regenerator according to claim 2, wherein a surface having a constant radius of curvature is provided on the inner surface of the heat transfer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24744593A JP3479104B2 (en) | 1993-09-07 | 1993-09-07 | Vertical low temperature regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24744593A JP3479104B2 (en) | 1993-09-07 | 1993-09-07 | Vertical low temperature regenerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0777366A true JPH0777366A (en) | 1995-03-20 |
| JP3479104B2 JP3479104B2 (en) | 2003-12-15 |
Family
ID=17163555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24744593A Expired - Lifetime JP3479104B2 (en) | 1993-09-07 | 1993-09-07 | Vertical low temperature regenerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3479104B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100679982B1 (en) * | 2006-03-15 | 2007-02-08 | 주식회사 신성엔지니어링 | Low-temperature regenerator for absorption-type water heating/cooling unit |
| KR101028820B1 (en) * | 2009-07-30 | 2011-04-12 | 주식회사 신성엔지니어링 | Generator of absorption heat pump |
-
1993
- 1993-09-07 JP JP24744593A patent/JP3479104B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100679982B1 (en) * | 2006-03-15 | 2007-02-08 | 주식회사 신성엔지니어링 | Low-temperature regenerator for absorption-type water heating/cooling unit |
| KR101028820B1 (en) * | 2009-07-30 | 2011-04-12 | 주식회사 신성엔지니어링 | Generator of absorption heat pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3479104B2 (en) | 2003-12-15 |
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