JPH0686967B2 - Absorption refrigerator - Google Patents
Absorption refrigeratorInfo
- Publication number
- JPH0686967B2 JPH0686967B2 JP60247478A JP24747885A JPH0686967B2 JP H0686967 B2 JPH0686967 B2 JP H0686967B2 JP 60247478 A JP60247478 A JP 60247478A JP 24747885 A JP24747885 A JP 24747885A JP H0686967 B2 JPH0686967 B2 JP H0686967B2
- Authority
- JP
- Japan
- Prior art keywords
- absorber
- generator
- condenser
- detector
- way valve
- 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.)
- Expired - Lifetime
Links
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明はエンジンのジャケットの温水などの熱を活用し
て運転する吸収冷凍機（以下、この種の吸収冷凍機とい
う）の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an improvement of an absorption refrigerating machine (hereinafter referred to as this type of absorption refrigerating machine) that operates by utilizing heat such as hot water of an engine jacket.
（ロ）従来の技術 この種の吸収冷凍機の従来の技術として、例えば特開昭
52-133631号公報や実開昭57-5677号公報などにみられる
ように、エンジンのジャケットとこの種の吸収冷凍機の
発生器とを結んだ温水回路に発生器をバイパスする流量
制御弁付きの温水流路を設けたものがある。(B) Conventional technology As a conventional technology of this type of absorption refrigerator, for example, Japanese Patent Laid-Open No.
With a flow control valve that bypasses the generator in the hot water circuit that connects the engine jacket and the generator of this type of absorption refrigerator, as seen in 52-133631 and Japanese Utility Model No. 57-5677. There is a hot water flow path.
（ハ）発明が解決しようとする問題点 上記のような従来のものにおいては、この種の吸収冷凍
機の起動時に、発生器に流す温水の流量を少なくする一
方で発生器をバイパスする温水の流量を多くすることに
よりエンジンのジャケットに戻る温水の過度の温度降下
すなわちエンジンの冷え過ぎを容易に防ぎ得る利点があ
るものの、この種の吸収冷凍機の起動から定常運転へ移
行するまでに長時間（1.5時間〜２時間）を要する問題
点があった。(C) Problems to be Solved by the Invention In the above-described conventional one, when the absorption refrigerator of this type is started, the flow rate of the hot water flowing to the generator is reduced while the hot water bypassing the generator is reduced. Although there is an advantage that it is possible to easily prevent excessive temperature drop of hot water returning to the engine jacket by increasing the flow rate, that is, excessive cooling of the engine, it takes a long time from the start of this type of absorption refrigerator to the normal operation. There was a problem requiring (1.5 hours to 2 hours).
本発明は、この問題点に鑑み、起動から定常運転へ移行
するまでの時間（以下、立上り時間という）を短縮し得
ると共にその間のエンジンの冷え過ぎ〔設備側への熱源
流体の戻り温度の過度の低下〕を軽減し得るこの種の吸
収冷凍機の提供を目的としたものである。In view of this problem, the present invention can shorten the time from the start to the transition to steady operation (hereinafter referred to as the rise time) and, at the same time, cause the engine to be too cold (the return temperature of the heat source fluid to the equipment side is excessive. It is an object of the present invention to provide an absorption refrigerating machine of this type capable of reducing the above.
（ニ）問題点を解決するための手段 本発明は、問題点を解決する手段として、発生器、凝縮
器、蒸発器、吸収器、溶液熱交換器及び吸収液用ポンプ
などの機器を配管接続して冷媒循環路および吸収液循環
路を形成し、エンジンのジャッケットや化学プラントの
精留塔など設備側から流出する流体を発生器の加熱源と
して用いた後上記設備側へ戻し、かつ吸収器及び凝縮器
に冷却水管を接続し冷却流体を吸収器から凝縮器へ直列
に流通させるようにした吸収冷凍機において、冷却水管
に吸収器を側路するバイパス管を三方弁を介して接続
し、発生器出口側の流体温度あるいは発生器の吸収液温
度などの物理量を検知する検出器あるいは起動時の三方
弁の切換え制御のプログラムを記憶したタイマーと、起
動後は上記検出器あるいはタイマーの信号により三方弁
をバイパス管側に切換え冷却流体を凝縮器のみに供給
し、且つ起動後から定常運転へ移行するまでの間に検出
器あるいはタイマーの信号により三方弁をバイパス管側
から吸収器側へ切換え吸収器及び凝縮器への冷却流体の
供給を開始させる制御装置とを備えた吸収冷凍機を提供
するものである。(D) Means for Solving Problems As a means for solving the problems, the present invention connects equipment such as a generator, a condenser, an evaporator, an absorber, a solution heat exchanger, and an absorption liquid pump by piping. To form a refrigerant circulation path and an absorption liquid circulation path, use the fluid flowing out from the equipment side such as an engine jacket or a rectification tower in a chemical plant as a heating source for the generator, and then return it to the equipment side, and In the absorption refrigerator in which the cooling water pipe is connected to the condenser and the cooling fluid is circulated in series from the absorber to the condenser, the bypass pipe bypassing the absorber is connected to the cooling water pipe via the three-way valve, A detector that detects a physical quantity such as the fluid temperature on the outlet side of the generator or a temperature of the absorbing liquid of the generator, or a timer that stores a program for controlling the switching of the three-way valve at startup, and the signal of the above-mentioned detector or timer after startup. The three-way valve is switched from the bypass pipe side to the absorber side by switching the three-way valve to the bypass pipe side and supplying cooling fluid only to the condenser, and by the signal of the detector or the timer between the start and the transition to the steady operation. The present invention provides an absorption refrigerating machine provided with a control device for starting the supply of the cooling fluid to the switch-over absorber and the condenser.
（ホ）作用 本発明においては、起動後、吸収器へ冷却流体を供給せ
ずに凝縮器にのみ冷却流体を供給し凝縮器での冷媒凝縮
を行わせ、機外への放熱を減少させると共に吸収液の濃
縮を行い、吸収液の昇温と濃縮とを早める作用をこの種
の吸収冷凍機にもたらせることが可能になる。(E) Action In the present invention, after starting, the cooling fluid is not supplied to the absorber and only the condenser is supplied with the cooling fluid to cause the refrigerant to condense in the condenser, thereby reducing heat radiation to the outside of the machine. The absorption liquid can be concentrated, and the absorption refrigerator of this type can be provided with the effects of accelerating the temperature rise and concentration of the absorption liquid.
それ故、本発明によれば、この種の吸収冷凍機の立ち上
がり時間を従来のものよりも短縮でき、しかも吸収器へ
の冷却流体の供給が開始されるまでの間にも凝縮器での
冷媒凝縮が行われ、冷却流体の吸収器への供給を開始し
たときには、速やかに冷凍能力を向上することが可能に
なり、かつ、発生器から流出する熱源用流体の過度の温
度降下も短時間で解消し、エンジンその他の設備側の冷
え過ぎも軽減できる。Therefore, according to the present invention, the rise time of this type of absorption refrigerator can be shortened as compared with the conventional one, and the refrigerant in the condenser is supplied even before the supply of the cooling fluid to the absorber is started. When the condensation is performed and the supply of the cooling fluid to the absorber is started, the refrigerating capacity can be promptly improved, and the excessive temperature drop of the heat source fluid flowing out from the generator can be achieved in a short time. It also eliminates the problem of overcooling of the engine and other equipment.
（ヘ）実施例 第１図は本発明によるこの種の吸収冷凍機の一実施例を
示した概略構成説明図であり、（１）は発生器（Ｇ）お
よび凝縮器（Ｃ）より成る発生凝縮器、（２）は蒸発器
（Ｅ）および吸収器（Ａ）より成る蒸発吸収器、（He
x）は溶液熱交換器、（PR）は冷媒液用のポンプ、
（PA）は吸収液用のポンプで、これらは冷媒液の流下す
る管（３）、冷媒液の還流する管（４）、（５）、吸収
液の送られる管（６）、（７）、（８）および吸収液の
流れる管（９）、（10）により接続されて冷媒〔水〕と
吸収液〔臭化リチウム水溶液〕の循環路を構成してい
る。(F) Embodiment FIG. 1 is a schematic structural explanatory view showing an embodiment of an absorption refrigerator of this type according to the present invention, wherein (1) is a generator (G) and a condenser (C). A condenser, (2) an evaporative absorber consisting of an evaporator (E) and an absorber (A), (He
x) is the solution heat exchanger, (P R ) is the pump for the refrigerant liquid,
(P A ) is a pump for absorbing liquid, and these are pipes (3) through which the refrigerant liquid flows, pipes (4) and (5) through which the refrigerant liquid recirculates, and pipes (6) and (7) through which the absorbing liquid is sent. ), (8) and the pipes (9), (10) through which the absorption liquid flows to form a circulation path for the refrigerant [water] and the absorption liquid [lithium bromide aqueous solution].
（11）、（12）、（13）および（14）はそれぞれ発生器
（Ｇ）、凝縮器（Ｃ）、蒸発器（Ｅ）および吸収器
（Ａ）に内蔵した熱交換器である。（15）、（16）は熱
交換器（13）と接続した冷水の流れる管、（17）、（1
8）、（19）は熱交換器（14）、（12）と接続した冷却
水の流れる管であり、管（17）には冷却水用のポンプ
（PC）が備えられている。さらに、管（18）には三方弁
（V3）が設けられ、この三方弁を介して冷却水バイパス
用の管（24）が接続されている。(11), (12), (13) and (14) are heat exchangers incorporated in the generator (G), the condenser (C), the evaporator (E) and the absorber (A), respectively. (15) and (16) are pipes for flowing cold water connected to the heat exchanger (13), (17) and (1
8) and (19) are pipes for flowing cooling water connected to the heat exchangers (14) and (12), and the pipe (17) is provided with a cooling water pump (PC). Furthermore, the pipe (18) is provided with a three-way valve (V3), and the pipe (24) for bypassing the cooling water is connected via this three-way valve.
（Ｊ）はエンジンや発電プラントなどの設備〔図示せ
ず〕を冷却するために用いられているジャケットで、こ
のジャケットと熱交換器（11）とは管（20）、（21）で
結ばれて発生器（Ｇ）の熱源用温水の循環路が構成され
ている。（22）は温水の発生器（Ｇ）バイパス用の管
で、この管は三方弁（V1）を介して管（20）と管（21）
とに接続されている。また、（PH）は管（20）に備えた
温水循環用のポンプである。(J) is a jacket used for cooling equipment (not shown) such as an engine and a power plant. The jacket and the heat exchanger (11) are connected by pipes (20) and (21). A circulation path of hot water for the heat source of the generator (G) is configured. (22) is a pipe for hot water generator (G) bypass, and this pipe is connected to a pipe (20) and a pipe (21) via a three-way valve (V 1 ).
Connected to. Further, (P H ) is a pump for circulating hot water provided in the pipe (20).
（S1）は熱交換器（11）出口の温水温度を感知する検出
器、（S3）は発生器（Ｇ）内の吸収液温度を感知する検
出器であり、（Ｔ）はタイマーである。そして、これら
検出器のいずれかの信号もしくはタイマーの信号によ
り、制御器（CR）を介して三方弁（V3）がバイパス用の
管（24）側から吸収器（Ａ）の熱交換器（14）側へ切り
換えられるようになっている。(S 1 ) is a detector that detects the temperature of hot water at the outlet of the heat exchanger (11), (S 3 ) is a detector that detects the temperature of the absorbing liquid in the generator (G), and (T) is a timer. is there. The three-way valve (V3) is connected to the heat exchanger (14) of the absorber (A) from the bypass pipe (24) side via the controller (CR) by a signal from one of these detectors or a timer signal. ) Side can be switched to.
なお、（Ｓ）は熱交換器（13）出口の冷水温度を感知す
る検出器で、この検出器の信号により温度調節器（CT）
を介して三方弁（V1）の開度を制御できるようになって
いる。In addition, (S) is a detector that senses the cold water temperature at the outlet of the heat exchanger (13), and the temperature controller (C T ) is detected by the signal from this detector.
The opening of the three-way valve (V 1 ) can be controlled via.
次に、このように構成された吸収冷凍機（以下、本機と
いう）の動作の一例を説明する。なお、ここにおいて、
冷却水の流れは、検出器（S1）の信号で三方弁（V3）の
切換えをすることにより、行なわれる場合について説明
する。Next, an example of the operation of the absorption refrigerating machine (hereinafter referred to as this machine) configured as described above will be described. Note that here,
The case where the flow of cooling water is performed by switching the three-way valve (V3) by the signal of the detector (S1) will be described.
本機の運転開始直後においては、発生器（Ｇ）内を循環
する吸収液の温度が外気温に近いため、例えば85℃程度
で熱交換器（11）に流入した温水が降温してこの熱交換
器から60℃程度で流出する。そして、運転開始と同時に
冷却水用ポンプ（PC）を作動させて吸収器（Ａ）及び凝
縮器（Ｃ）に冷却水を流通させた場合、冷却水による機
外への放熱が多いため、発生凝縮器（１）内の飽和蒸気
圧、温度の上昇が遅く、熱交換器（11）出口の温水温度
の上昇も遅くなり、設備側のジャケット（Ｊ）が冷え過
ぎてしまう。Immediately after the start of the operation of this machine, the temperature of the absorbing liquid circulating in the generator (G) is close to the outside air temperature, so the hot water that has flowed into the heat exchanger (11) at about 85 ° C cools down, and this heat It flows out from the exchanger at about 60 ° C. Then, when the cooling water pump (P C ) is operated at the same time as the operation is started and the cooling water is circulated through the absorber (A) and the condenser (C), there is much heat dissipation to the outside by the cooling water, The saturated vapor pressure and temperature in the generating condenser (1) rise slowly, and the hot water temperature at the outlet of the heat exchanger (11) also rises slowly, and the jacket (J) on the equipment side becomes too cold.
この場合、本機においては、その運転開始直後には三方
弁（V3）をバイパス用の管（24）側に開き、冷却水を吸
収器（Ａ）の熱交換器（14）へは流さず、検出器（S1）
の感知温度が75℃になると、この検出器の信号により三
方弁（V3）を切換え、熱交換器（14）側に開くようにし
ている。In this case, in this machine, immediately after the start of operation, the three-way valve (V3) is opened to the bypass pipe (24) side, and the cooling water does not flow to the heat exchanger (14) of the absorber (A). , Detector (S1)
When the temperature sensed by the sensor reaches 75 ° C, the three-way valve (V3) is switched by the signal from this detector to open to the heat exchanger (14) side.
このように本機においては、起動時に冷却水の吸収器
（Ａ）への流通を断って機外への放熱を減じることによ
り、発生器（Ｇ）を循環する吸収液の温度を速みやかに
上昇させると共に凝縮器（Ｃ）にのみ冷却水を流し、冷
媒を凝縮させて吸収液の濃縮を起動時から行ぎながら、
発生凝縮器（１）内の圧力を速やかに高め、エンジンな
どのジャケット（Ｊ）の冷え過ぎが長時間にわたること
を防ぎ、かつ、立上り時間を短縮しているのである。In this way, in this machine, the temperature of the absorbing liquid circulating in the generator (G) is accelerated by cutting off the flow of the cooling water to the absorber (A) at the time of startup to reduce the heat radiation to the outside of the machine. While cooling water is flown only to the condenser (C) while condensing the refrigerant to concentrate the absorbing liquid from the start,
The pressure in the generating condenser (1) is quickly raised to prevent the jacket (J) of the engine or the like from being overcooled for a long time, and the rise time is shortened.
なお、循環する吸収液の温度、蒸気圧および濃度の変化
すなわち吸収冷凍サイクルの変化に関連して検出器
（S3）の感知する値も変化するので、この検出器の信号
により三方弁（V3）の切換えを制御ていも良く、また、
起動時の動作を予め実験で確認しておき、この実験結果
に基いてプログラムの組み込まれたタイマー（Ｔ）の信
号により、制御するようにしても良い。The value sensed by the detector (S 3 ) also changes in association with changes in the temperature, vapor pressure, and concentration of the circulating absorbing liquid, that is, changes in the absorption refrigeration cycle, so the signal from this detector changes the three-way valve (V 3 ) Switching may be controlled, and
The operation at the time of startup may be confirmed in advance by an experiment, and based on the result of the experiment, it may be controlled by a signal of a timer (T) in which a program is incorporated.
（ト）発明の効果 以上のように、本発明は、起動時冷却水管に設けられた
三方弁の切換えを制御し吸収冷凍サイクルの変化と関連
する物理量が設定値になるまで冷却水を凝縮器にのみ供
給し、吸収器への供給を断つので、起動時の機外への放
熱を減じて発生器内の吸収液の温度と蒸気圧を速やかに
上昇させることができると共に、凝縮器にて冷媒の凝縮
を起動時から行い、冷却水が吸収器へ供給されてからの
冷凍能力の向上を速やかに行い、吸収冷凍機の立ち上が
り時間を大幅に短縮することができ、かつ、エンジンな
どの設備側へ戻す流体（例えばジャケット温水）の過度
の温度降下が長時間にわたって続くことを防止でき、設
備側の運転への悪影響を軽微にし得る効果も有するもの
である。(G) Effect of the Invention As described above, the present invention controls the switching of the three-way valve provided in the cooling water pipe at startup and cools the cooling water until the physical quantity related to the change in the absorption refrigeration cycle reaches the set value. Supply to the absorber and cut off the supply to the absorber, it is possible to reduce the heat radiation to the outside of the machine at the time of start-up and quickly raise the temperature and vapor pressure of the absorbing liquid in the generator. The refrigerant is condensed from the start-up, and the refrigerating capacity after the cooling water is supplied to the absorber can be improved promptly, and the start-up time of the absorption refrigerator can be greatly shortened and the equipment such as the engine can be shortened. It is possible to prevent an excessive temperature drop of the fluid returned to the side (for example, jacket hot water) from continuing for a long time, and to have an effect that the adverse effect on the operation of the equipment side can be minimized.
第１図は本発明によるこの種の吸収冷凍機の一実施例を
示した概略構成説明図である。 （１）……発生凝縮器、（２）……蒸発吸収器、（Ｇ）
……発生器、（Ｃ）……凝縮器、（Ｅ）……蒸発器、
（Ａ）……吸収器、（11）、（12）、（13）、（14）…
…熱交換器、（Ｊ）……ジャケット、（17）、（18）、
（19）、（20）、（21）……管、（PC）……冷却水用ポ
ンプ、（CR）……制御器、（S1）、（S3）……検出器、
（24）……管、（V3）……三方弁。FIG. 1 is a schematic configuration explanatory view showing an embodiment of an absorption refrigerator of this type according to the present invention. (1) ... Generating condenser, (2) ... Evaporation absorber, (G)
…… Generator, (C) …… Condenser, (E) …… Evaporator,
(A) ... Absorber, (11), (12), (13), (14) ...
… Heat exchanger, (J) …… Jacket, (17), (18),
(19), (20), (21) …… pipe, (P C ) …… cooling water pump, ( CR ) …… controller, (S 1 ), (S 3 ) …… detector,
(24) …… pipe, (V 3 ) …… three-way valve.
Claims (3)
交換器及び吸収液用ポンプなどの機器を配管接続して冷
媒循環路および吸収液循環路を形成し、エンジンのジャ
ケットや化学プラントの精留塔など設備側から流出する
流体を発生器の加熱源として用いた後上記設備側へ戻
し、かつ吸収器及び凝縮器に冷却水管を接続し冷却流体
を吸収器から凝縮器へ直列に流通させるようにした吸収
冷凍機において、冷却水管に吸収器を側路するバイパス
管を三方弁を介して接続し、発生器出口側の流体温度あ
るいは発生器の吸収液温度などの物理量を検知する検出
器あるいは起動時の三方弁の切換え制御のプログラムを
記憶したタイマーと、起動後は上記検出器あるいはタイ
マーの信号により三方弁をバイパス管側に切換え冷却流
体を凝縮器のみに供給し、且つ起動後から定常運転へ移
行するまでの間に検出器あるいはタイマーの信号により
三方弁をバイパス管側から吸収器側へ切換え吸収器及び
凝縮器への冷却流体の供給を開始させる制御装置とを備
えたことを特徴とする吸収冷凍機。1. A device such as a generator, a condenser, an evaporator, an absorber, a solution heat exchanger and an absorbent pump is connected by piping to form a refrigerant circulation path and an absorption liquid circulation path, and an engine jacket or After using the fluid flowing out from the equipment side such as the rectification tower of the chemical plant as the heating source of the generator, return it to the above equipment side, and connect the cooling water pipe to the absorber and condenser to transfer the cooling fluid from the absorber to the condenser. In an absorption refrigerator that is made to flow in series, a bypass pipe that bypasses the absorber is connected to the cooling water pipe through a three-way valve, and the physical quantity such as the fluid temperature on the generator outlet side or the absorption liquid temperature of the generator is measured. After detecting the detector or the timer that stores the program for controlling the switching of the three-way valve at startup, after startup, switch the three-way valve to the bypass pipe side by the signal of the above-mentioned detector or timer and supply the cooling fluid only to the condenser. And a control device for switching the three-way valve from the bypass pipe side to the absorber side by the signal of the detector or the timer from the start up to the transition to the steady operation and starting the supply of the cooling fluid to the absorber and the condenser. An absorption refrigerating machine comprising:
流体の流路に備えた温度検出器である特許請求の範囲第
１項に記載の吸収冷凍機。2. The absorption refrigerator according to claim 1, wherein the detector is a temperature detector provided in a flow path of a fluid returning from a generator to the facility side.
温度検出器である特許請求の範囲第１項に記載の吸収冷
凍機。3. The absorption refrigerator according to claim 1, wherein the detector is a temperature detector provided in an absorbing liquid in a generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60247478A JPH0686967B2 (en) | 1985-11-05 | 1985-11-05 | Absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60247478A JPH0686967B2 (en) | 1985-11-05 | 1985-11-05 | Absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62106268A JPS62106268A (en) | 1987-05-16 |
| JPH0686967B2 true JPH0686967B2 (en) | 1994-11-02 |
Family
ID=17164052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60247478A Expired - Lifetime JPH0686967B2 (en) | 1985-11-05 | 1985-11-05 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0686967B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01318864A (en) * | 1988-06-20 | 1989-12-25 | Sanyo Electric Co Ltd | Absorption refrigerator and control of the same |
| CN1149369C (en) * | 1994-06-10 | 2004-05-12 | 东京瓦斯株式会社 | Absorption water chiller/heater and method of controlling same |
| AU2003266614A1 (en) | 2002-09-26 | 2004-06-15 | Ebara Corporation | Absorption refrigerating machine |
| JP6337055B2 (en) * | 2015-10-07 | 2018-06-06 | 荏原冷熱システム株式会社 | Absorption heat pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0621737A (en) * | 1992-06-29 | 1994-01-28 | Victor Co Of Japan Ltd | Alc circuit |
-
1985
- 1985-11-05 JP JP60247478A patent/JPH0686967B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62106268A (en) | 1987-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |