JPH0718619B2 - Cooling / heating switching type absorption chiller extraction device - Google Patents
Cooling / heating switching type absorption chiller extraction deviceInfo
- Publication number
- JPH0718619B2 JPH0718619B2 JP6915388A JP6915388A JPH0718619B2 JP H0718619 B2 JPH0718619 B2 JP H0718619B2 JP 6915388 A JP6915388 A JP 6915388A JP 6915388 A JP6915388 A JP 6915388A JP H0718619 B2 JPH0718619 B2 JP H0718619B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- cooling
- pipe
- gas
- absorption refrigerator
- 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 - Fee Related
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 本発明は蒸発器から冷水あるいは温水を取出す冷暖切換
型吸収冷凍機の抽気装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an improvement of an extraction device for a cooling / heating switching absorption refrigerating machine that extracts cold water or hot water from an evaporator.
（ロ）従来の技術 上記した抽気装置の従来の技術として、吸収液用ポンプ
から吐出される吸収液の冷媒吸収作用により、吸収器内
の冷媒蒸気と共に不凝縮ガスを抽気しつつこれらを分離
して不凝縮ガスをタンクに溜め、これを機外へ排気する
もの（例えば実公昭53−2360号公報、特公昭53−2360号
公報参照）がある。(B) Conventional technology As a conventional technology of the extraction device described above, the refrigerant absorbing action of the absorbing liquid discharged from the absorbing liquid pump separates them while extracting the non-condensed gas together with the refrigerant vapor in the absorber. The non-condensable gas is stored in a tank and exhausted outside the machine (see, for example, Japanese Utility Model Publication No. 53-2360 and Japanese Patent Publication No. 53-2360).
（ハ）発明が解決しようとする課題 蒸発器から冷水と温水を交互に取出す冷暖切換型吸収冷
凍機において、冷水取出し運転時での蒸発器および吸収
器内の圧力は高くてもせいぜい10mmHg程度であるが、温
水取出し運転時でのそれは200mmHg程度まで高まること
もある。そのため、従来の抽気装置においては、温水取
出し運転時での蒸発吸収器内圧により吸収液が不凝縮ガ
ス用タンクへ押し出されて真空ポンプ〔不凝縮ガス排気
用ポンプ〕もしくはパラジウム・セルにまで流れ込みこ
れらを傷めるおそれもあり、また、不凝縮ガス用タンク
の容量を大きくしている場合には吸収冷凍機内を循環す
る吸収液が不足気味となって溶液用ポンプのキャビテー
ションや発生器の空焚きを引起すなど、種々の問題があ
る。(C) Problems to be solved by the invention In a cooling / heating switching type absorption refrigerator that alternately takes out cold water and hot water from the evaporator, the pressure inside the evaporator and the absorber during the cold water take-out operation is at most about 10 mmHg. However, it may increase up to about 200 mmHg during hot water extraction operation. Therefore, in the conventional bleeder, the absorbing liquid is pushed out to the tank for noncondensable gas by the internal pressure of the evaporative absorber during the hot water extraction operation, and flows into the vacuum pump (pump for exhausting noncondensable gas) or the palladium cell. If the capacity of the non-condensable gas tank is increased, the absorption liquid circulating in the absorption refrigerator may become insufficient, causing cavitation of the solution pump and emptying of the generator. There are various problems.
そして、これら問題を解消するための従来の手段とし
て、温水取出し運転時に発生器からの冷媒蒸気で不凝縮
ガス用タンクを加熱してタンク内を昇圧させるもの〔例
えば特公昭52−49182号公報参照〕や、蒸発器の空間に
隔壁を設けてこの隔壁と蒸発吸収器胴の外壁とにより不
凝縮ガス用タンクを形成したもの〔例えば実公昭57−33
347号公報参照〕が提案されている。And, as a conventional means for solving these problems, what heats the tank for non-condensable gas with the refrigerant vapor from the generator during the hot water take-out operation to pressurize the inside of the tank (for example, see Japanese Patent Publication No. 52-49182). ], Or a partition is provided in the space of the evaporator, and a non-condensable gas tank is formed by this partition and the outer wall of the evaporation absorber body [for example, Japanese Utility Model Publication 57-33].
Japanese Patent No. 347] is proposed.
しかし、これら従来の手段においては、吸収冷凍機の冷
暖切換時に、不凝縮ガス用タンク内が昇温昇圧するまで
にかなりの時間を要するため、この間に吸収液がタンク
内に充満してパラジウム・セルや真空ポンプなどに侵入
してしまうこととなり、結局、上記問題を確実に解消で
きないことになる。However, in these conventional means, it takes a considerable amount of time for the non-condensable gas tank to rise in temperature and pressure when the absorption refrigerator is switched between cooling and heating, and during this time, the absorption liquid fills the tank and palladium. It will invade into a cell, a vacuum pump, etc., and in the end, the above problem cannot be solved reliably.
なお、冷暖切換型吸収冷凍機の蒸発吸収器の気相部と不
凝縮ガス用タンクとを開閉弁付きの管路で結び温水取出
し運転の切替と同時に上記開閉弁を開いてタンク内を蒸
発吸収器内圧と均圧化させることにより、タンクやパラ
ジウム・セルあるいは真空ポンプなどへの吸収液の侵入
を防ぐ方法〔例えば特開昭60−235979号公報参照〕もあ
るが、この方法ではタンク内のガスが蒸発吸収器側へ戻
ってしまうことになるため、温水取出し運転時での不凝
縮ガスの捕集をなし得ないという問題がある。In addition, the vapor phase part of the cooling / heating switching type absorption refrigerator and the tank for non-condensable gas are connected by a pipeline with an on-off valve, and at the same time as switching the hot water extraction operation, the on-off valve is opened to evaporate and absorb the inside of the tank. There is also a method of preventing the absorption liquid from entering a tank, a palladium cell, a vacuum pump or the like by equalizing the pressure inside the vessel (see, for example, JP-A-60-235979). Since the gas returns to the evaporative absorber side, there is a problem that the non-condensable gas cannot be collected during the hot water extraction operation.
本発明は、上記問題を確実に解消でき、かつ、温水取出
し運転時においても不凝縮ガスの捕集の可能な冷暖切換
型吸収冷凍機用抽気装置の提供を課題としたものであ
る。An object of the present invention is to provide a cooling / heating switching type absorption chiller extraction device capable of reliably solving the above-mentioned problems and capable of collecting non-condensable gas even during a hot water take-out operation.
（ニ）課題を解決するための手段 本発明は、上記の課題を解決する手段として、蒸発器か
ら冷温流体を取出す冷暖切換型吸収冷凍機において、そ
の冷房運転時に吸収器からガスを抽気する第１経路およ
び不凝縮ガスを溜める第１タンクとは別に、暖房運転時
に凝縮器からガスを抽気する第２経路およびこれと連通
して不凝縮ガスを溜める第２タンクを備え、かつ、冷房
運転時には閉じられる一方で暖房運転時に開かれる弁を
有する管路により、第１タンクと第２タンクを接続して
抽気装置を構成したものである。(D) Means for Solving the Problem The present invention is, as a means for solving the above-mentioned problems, in a cooling / heating switching type absorption refrigerating machine that takes out a cooling / heating fluid from an evaporator, in which a gas is extracted from the absorber during the cooling operation. In addition to the first path and the first tank for storing the non-condensable gas, the second path for extracting the gas from the condenser during the heating operation and the second tank for storing the non-condensable gas in communication with the second path are provided, and at the time of the cooling operation. The bleeding device is configured by connecting the first tank and the second tank by a pipeline having a valve that is closed while being opened during heating operation.
（ホ）作用 本発明の抽気装置においては、冷暖切換型吸収冷凍機の
暖房運転時に、蒸発器内の飽和蒸気圧とほぼ同じ内圧に
なる凝縮器の気相部と、第２抽気経路を介して、連通す
る第２タンクが上記管路を介して第１タンクと連通する
構成になっているので、この第１タンクの内圧を蒸発器
のそれよりもやゝ低い程度に保つ作用がある。したがっ
て、吸収冷凍機の暖房運転時、本発明の抽気装置におい
ては、第１タンク内が蒸発器および吸収器側からの液で
満たされるようなことはなく、パラジウム・セルや真空
ポンプの損傷を招くおそれもない。また、本発明の装置
は、吸収冷凍機の暖房運転時、冷媒蒸気の流入量の少な
くなる凝縮器から抽気する作用も有するので、冷媒の排
出量も軽減できる。(E) Action In the extraction apparatus of the present invention, during the heating operation of the cooling / heating switching type absorption refrigerator, the gas phase portion of the condenser having an internal pressure substantially equal to the saturated vapor pressure in the evaporator and the second extraction path are provided. Since the second tank that communicates with the first tank is configured to communicate with the first tank through the above-described pipe line, there is an effect of keeping the internal pressure of the first tank at a level slightly lower than that of the evaporator. Therefore, during the heating operation of the absorption refrigerator, in the extraction apparatus of the present invention, the first tank is not filled with the liquid from the evaporator and the absorber side, and the palladium cell and the vacuum pump are not damaged. There is no fear of inviting. Further, since the device of the present invention also has an action of extracting the refrigerant vapor from the condenser in which the inflow amount of the refrigerant is reduced during the heating operation of the absorption refrigerator, the discharge amount of the refrigerant can be reduced.
（ヘ）実施例 図面は本発明装置の一実施例を冷暖切換型二重効用吸収
冷凍機に適用した場合の概略構成説明図である。図にお
いて、（１）は高温再生器、（２）は低温再生器、
（３）は凝縮器、（４）は蒸発器、（５）は吸収器、
（６），（７）はそれぞれ低温、高温溶液熱交換機器、
（８）は吸収液と冷媒蒸気との分離器、（９）は気泡ポ
ンプ、（10）は電動式の希吸収液用ポンプであり、これ
らは希吸収液用の管路（11），（12），（13），（1
4）、揚液用の管路（15）、中間濃度の吸収液用の管路
（16），（17）、濃吸収液用の管路（18），（19）、冷
媒蒸気用の管路（20）、冷媒ドレン用の管路（21）、冷
媒液流下用の管路（22）、冷媒液還流用の管路（23），
（24）、冷暖切換弁（V0）付きの管路（25）で接続され
て従来の冷暖切換型二重効用吸収冷凍機と同様の冷媒お
よび吸収液の循環路が形成されている。なお、（D1），
（D2）はそれぞれ管路（12），（17）に備えたダンパー
型の弁、なおまた（VS）は管路（12）に備えた逆止弁で
ある。（26）は管路（21）に形成した加熱部で、これに
より気泡ポンプ（９）が駆動する。(F) Embodiments The drawings are schematic diagrams for explaining an embodiment of the device of the present invention when applied to a cooling / heating switching type double-effect absorption refrigerator. In the figure, (1) is a high temperature regenerator, (2) is a low temperature regenerator,
(3) is a condenser, (4) is an evaporator, (5) is an absorber,
(6) and (7) are low temperature and high temperature solution heat exchange equipment,
(8) is a separator for absorbing liquid and refrigerant vapor, (9) is a bubble pump, (10) is an electric pump for rare absorbing liquid, and these are pipelines (11), ( 12), (13), (1
4), Pipe line for pumping liquid (15), Pipe lines (16), (17) for absorbing liquid of intermediate concentration, Pipe lines (18), (19) for concentrated absorbing liquid, Pipe for refrigerant vapor A pipe (20), a pipe (21) for the refrigerant drain, a pipe (22) for flowing the refrigerant liquid, a pipe (23) for recirculating the refrigerant liquid,
(24), connected by a pipe line (25) with a cooling / heating switching valve (V 0 ), forming a refrigerant and absorption liquid circulation path similar to that of a conventional cooling / heating switching type double-effect absorption refrigerator. Note that (D 1 ),
(D 2 ) is a damper type valve provided in the pipelines (12) and (17), respectively, and (V S ) is a check valve provided in the pipeline (12). (26) is a heating part formed in the pipe line (21), which drives the bubble pump (9).
（Ｂ）は高温再生器（１）のバーナー、（27）は排ガス
路、（28）は低温再生器（２）の加熱器、（29）は凝縮
器（３）の冷却器、（30）は蒸発器（４）の熱交換器、
（31）は吸収器（５）の冷却器であり、（32）は弁
（VB）付きの冷媒液ブロー用管路である。なお、（33）
は低温再生器（２）から吸収器（５）への吸収液溢流用
のＵ字状管路であり、（34）は凝縮器（３）の液溜の仕
切に設けた開口である。(B) is a burner of the high temperature regenerator (1), (27) is an exhaust gas passage, (28) is a heater of the low temperature regenerator (2), (29) is a cooler of the condenser (3), (30) Is the heat exchanger of the evaporator (4),
Reference numeral (31) is a cooler of the absorber (5), and reference numeral (32) is a refrigerant liquid blowing pipe line with a valve (V B ). (33)
Is a U-shaped pipe for overflowing the absorbing liquid from the low temperature regenerator (2) to the absorber (5), and (34) is an opening provided in the partition of the liquid reservoir of the condenser (3).
（35）は不凝縮ガスの抽気槽で、これと吸収器（５）の
気相部とを抽気管（36）で結んでいる。（37）は抽気槽
（35）の上方に配備した希吸収液用降温器であり、ここ
で降温して飽和蒸気圧の降下した希吸収液が抽気槽（3
5）に流入することにより、この槽内圧が吸収器（５）
内圧よりも低く保たれるので、不凝縮ガスが抽気槽（3
5）へ流入する。また、降温器（37）には冷却器が内蔵
されており、これには、蒸発器（４）の熱交換器（30）
からの冷水の一部を流す。（38）は降温器（37）の上方
に位置させて吸収器（５）の側壁に形成した液溜であ
り、これへ希吸収液の一部がポンプ（10）で送られるよ
う管路（12）と液溜（38）とが管（39），（40）によっ
て接続されている。なお、液溜（38）には希吸収液の溢
流用の開口が形成されている。また、（41）は気液導管
であり、（42）は気液分離器である。そして、（43）は
吸収液の戻り管であり、（44）は気液分離器（42）の頂
部と不凝縮ガスの第１タンク（T1）とを結んだ管であ
る。（P1）は弁付きの管（45）により第１タンク（T1）
と接続されたパラジウム・セルである。なお、（46）は
管（39）と吸収器（５）の液溜とを結んだ希吸収液還流
用の弁付き管路である。すなわち、第１タンク（T1）と
吸収器（５）とが抽気槽（35）および気液分離器（42）
を介して抽気管（36）、気液導管（41）、管（44）で結
ばれることにより、冷暖切換型二重効用吸収冷凍機の冷
水取出し時（例えば冷房運転時）に機内の吸収液を用い
て吸収器（５）内の不凝縮ガスを抽気しつつ第１タンク
（T1）へ導く第１抽気経路が構成されているのである。(35) is an extraction tank for non-condensable gas, which is connected to the gas phase part of the absorber (5) by an extraction pipe (36). Reference numeral (37) is a cooler for the diluted absorbent, which is arranged above the extraction tank (35).
By flowing into the 5), the internal pressure of this tank is absorbed by the absorber (5).
Since it is kept lower than the internal pressure, the non-condensable gas is
Inflow to 5). Further, the cooler (37) has a built-in cooler, which includes the heat exchanger (30) of the evaporator (4).
Run some cold water from. Reference numeral (38) is a liquid reservoir formed on the side wall of the absorber (5) located above the temperature lowering device (37), to which a pipe () is provided so that a part of the diluted absorbing liquid is sent by the pump (10). 12) and the liquid reservoir (38) are connected by pipes (39) and (40). The liquid reservoir (38) has an opening for overflow of the diluted absorption liquid. Further, (41) is a gas-liquid conduit, and (42) is a gas-liquid separator. Further, (43) is a return pipe for the absorbing liquid, and (44) is a pipe connecting the top of the gas-liquid separator (42) and the first tank (T 1 ) of the non-condensing gas. (P 1 ) is the first tank (T 1 ) due to the valved pipe (45)
It is a palladium cell connected to. Incidentally, (46) is a pipe line with a valve for recirculating the diluted absorption liquid, which connects the pipe (39) and the liquid reservoir of the absorber (5). That is, the first tank (T 1 ) and the absorber (5) are the extraction tank (35) and the gas-liquid separator (42).
The extraction liquid (36), the gas-liquid conduit (41), and the pipe (44) are connected to each other, so that the absorption liquid inside the machine at the time of taking out the cold water of the dual-effect absorption refrigerator with heating / cooling switching (for example, during cooling operation) Is used to form the first extraction path for extracting the non-condensable gas in the absorber (5) and guiding it to the first tank (T 1 ).
なお、（47）は凝縮器（３）の気相部と蒸発器（４）お
よび吸収器（５）の器胴のそれとを結んだ管路で、これ
には冷房運転時に閉じられる一方で温水取出し時（例え
ば暖房運転時）に開かれる減圧弁（Ｖ）が設けてある。In addition, (47) is a pipe line connecting the gas phase part of the condenser (3) and that of the body of the evaporator (4) and the absorber (5), which includes hot water while being closed during cooling operation. There is provided a pressure reducing valve (V) that is opened during taking out (for example, during heating operation).
（48）は低温再生器（２）の加熱器（28）の出口側ヘッ
ダー（49）の気相部に一端を開口する一方で他端を熱回
収器（50）の上部に接続したキャピラリーチューブ（T
u）付き管路である。このコイルの入口側と管路（12）
の分岐細管（52）とが結ばれる一方、コイル（51）出口
側と管路（13）とが希吸収液の戻し細管（53）で結ばれ
ている。また、熱回収器（50）の底部にはＬ字状管路
（54）の上端が接続され、この管路の下端が管（55）内
に上向きに開口している。管（55）の上端は不凝縮ガス
の第２タンク（T2）と接続される一方、下端は気液分離
槽（56）の液相部に下向きに開口している。かつまた、
気液分離槽（56）と吸収器（５）の器胴とは吸収液の戻
し管（57）により接続されている。また、（P2）は弁付
きの管（58）により第２タンク（T2）と接続されたパラ
ジウム・セルである。すなわち、第２タンク（T2）と低
温再生器（２）の加熱器（28）出口の気相部とが熱回収
器（50）および気液分離槽（56）を介して管路（48），
（54）、管（55）で結ばれることにより、冷暖切換型二
重効用吸収冷凍機の冷房運転時に機内の吸収液を用いて
低温再生器（２）の加熱器（28）内の不凝縮ガスを抽気
しつつ第２タンク（T2）へ導く第２抽気経路が構成され
ているのである。(48) is a capillary tube having one end opened to the gas phase part of the outlet side header (49) of the heater (28) of the low temperature regenerator (2), while the other end is connected to the upper part of the heat recovery unit (50). (T
u) with conduit. Inlet side of this coil and pipeline (12)
While the branch thin tube (52) is connected to the branch thin tube (52), the outlet side of the coil (51) and the conduit (13) are connected to each other by the return absorbent thin tube (53). The upper end of the L-shaped conduit (54) is connected to the bottom of the heat recovery unit (50), and the lower end of this conduit opens upward into the pipe (55). The upper end of the pipe (55) is connected to the second tank (T 2 ) for the non-condensable gas, while the lower end opens downward in the liquid phase portion of the gas-liquid separation tank (56). And again
The gas-liquid separation tank (56) and the body of the absorber (5) are connected by an absorbent return pipe (57). Further, (P 2 ) is a palladium cell connected to the second tank (T 2 ) by a valved pipe (58). That is, the second tank (T 2 ) and the vapor phase portion at the outlet of the heater (28) of the low temperature regenerator (2) pass through the heat recovery device (50) and the gas-liquid separation tank (56) through the pipeline (48). ),
Non-condensation in the heater (28) of the low-temperature regenerator (2) by using the absorption liquid inside the cooling / heating switching type dual-effect absorption refrigerator during the cooling operation by being connected by the pipe (54) and the pipe (55). A second bleeding path is formed which guides the gas to the second tank (T 2 ) while bleeding the gas.
（T3）は凝縮器（３）の気相部と抽気管（59）により接
続した不凝縮ガス分離用の第３タンクで、この第３タン
クには冷却器（60）が内蔵されている。そして、冷却器
（60）入口側は冷暖房負荷の熱交換ユニット〔図示せ
ず〕から蒸発器（４）の熱交換器（30）へ至る冷温水用
管路の分岐管路（61）と接続され、一方、出口側は、図
示していないが、熱交換器（30）から冷暖房負荷の熱交
換ユニットへ至る冷温水用管路と接続されている。（6
2）は不凝縮ガス分離用の第３タンク（T3）の底部と気
液分離槽（56）底部近くとを接続した管路であり、この
管路の途中には管（39）から分岐した弁付き管（63）が
接続されている。また、（64）は気液分離槽（56）底部
近くと前記液溜（38）とを結んだ管である。なおまた、
（65）は管（63）の分岐管で、その他端は前記Ｕ字状管
路（33）と接続されている。（P3）は弁付きの管（66）
により第３タンク（T3）と接続されたパラジウム・セル
である。(T 3 ) is a third tank for separating non-condensable gas, which is connected to the gas phase part of the condenser (3) by an extraction pipe (59), and a cooler (60) is built in this third tank. . The inlet side of the cooler (60) is connected to the branch pipe line (61) of the hot and cold water pipe line from the heat exchange unit (not shown) for the heating and cooling load to the heat exchanger (30) of the evaporator (4). On the other hand, the outlet side is connected to a cold / hot water pipe line (not shown) from the heat exchanger (30) to the heat exchange unit of the heating / cooling load. (6
2) is a pipe line that connects the bottom of the third tank (T 3 ) for separating non-condensable gas and the vicinity of the bottom of the gas-liquid separation tank (56). In the middle of this pipe, there is a branch from the pipe (39). The valved pipe (63) is connected. Further, (64) is a pipe connecting the vicinity of the bottom of the gas-liquid separation tank (56) and the liquid reservoir (38). Again,
Reference numeral (65) is a branch pipe of the pipe (63), and the other end is connected to the U-shaped conduit (33). (P 3 ) is a pipe with valve (66)
It is a palladium cell connected to the third tank (T 3 ) by the.
そして、（67），（68）は第３タンク（T3）と第1,第２
タンク（T1），（T2）のそれぞれとを結んだ連通管で、
これら連通管のそれぞれに電磁弁もしくは電動弁などの
開閉弁（V1），（V2）が備えてあり、これら弁は冷暖切
換型二重効用吸収冷凍機の冷房運転時に閉じられる一方
で暖房運転時に開かれるよう冷暖切換スイッチ〔図示せ
ず〕と接続されている。かつまた、第３タンク（T3）と
凝縮器（３）とを結ぶ抽気管（59）にも電磁弁もしくは
電動弁などの開閉弁（V3）が備えてあり、これと冷暖切
換スイッチとが接続されている。すなわち、第３タンク
（T3）と凝縮器（３）の気相部とが開閉弁（V3）付き抽
気管（59）で結ばれることにより、冷暖切換型二重効用
吸収冷凍機の暖房運転時に凝縮器（３）内の不凝縮ガス
を抽気してこれを第３タンク（T3）に溜める第３抽気経
路が構成されているのである。And (67) and (68) are the third tank (T 3 ) and the first and second tanks.
A communication pipe connecting each of the tanks (T 1 ) and (T 2 )
Each of these communication pipes is equipped with an on-off valve (V 1 ) or (V 2 ) such as a solenoid valve or a motor-operated valve, and these valves are closed during cooling operation of the cooling / heating switching type double-effect absorption refrigerator, while heating is performed. It is connected to a cooling / heating switch (not shown) so that it is opened during operation. Moreover, the extraction pipe (59) connecting the third tank (T 3 ) and the condenser (3) is also provided with an opening / closing valve (V 3 ) such as a solenoid valve or an electric valve, and this and the cooling / heating changeover switch. Are connected. That is, the third tank (T 3 ) and the vapor phase portion of the condenser (3) are connected by the extraction pipe (59) with the opening / closing valve (V 3 ), so that the heating / cooling dual-effect absorption refrigerator is heated. A third bleeding path is constructed to bleed off the non-condensable gas in the condenser (3) during operation and store it in the third tank (T 3 ).
なお、（69），（70）はそれぞれ第３タンク（T3）、抽
気管（36）とを結んだ弁付きのガス排出管で、これらは
真空ポンプ〔図示せず〕と接続されるようになってい
る。It should be noted that (69) and (70) are gas discharge pipes with valves connecting the third tank (T 3 ) and the extraction pipe (36), respectively, so that these are connected to a vacuum pump (not shown). It has become.
上述のように、第1,第2,第３抽気経路を備えた冷暖切換
型二重効用吸収冷凍機においては、その冷房運転時、開
閉弁（V1），（V2），（V3）は閉じられており、従来の
冷暖切換型二重効用吸収冷凍機の冷房運転時と同様に第
１抽気経路経由で吸収器（５）内の不凝縮ガスが抽気さ
れつつ第１タンク（T1）へ導かれ、このタンクからパラ
ジウム・セル（P1）により機外へ排出される。また、低
温再生器（２）の加熱器（28）内の不凝縮ガスも第２抽
気経路経由で第２タンク（T2）へ導かれ、ここからパラ
ジウム・セル（P2）により機外へ排出される。なお、冷
房運転時での第1,第２タンク（T1），（T2）の内圧はそ
れぞれ５〜80mmHg、５〜120mmHg程度である。As described above, in the cooling / heating switching type double-effect absorption refrigerator having the first, second and third extraction paths, the on-off valves (V 1 ), (V 2 ), (V 3 ) Is closed, and the non-condensed gas in the absorber (5) is extracted through the first extraction path through the first tank (T) as in the cooling operation of the conventional cooling / heating switching type double-effect absorption refrigerator. 1 ) and discharged from the tank to the outside by a palladium cell (P 1 ). In addition, the non-condensable gas in the heater (28) of the low temperature regenerator (2) is also guided to the second tank (T 2 ) via the second extraction passage, and from there, outside the machine by the palladium cell (P 2 ). Is discharged. The internal pressures of the first and second tanks (T 1 ) and (T 2 ) during the cooling operation are about 5 to 80 mmHg and 5 to 120 mmHg, respectively.
一方、冷暖切換弁（V0）を開いて高温再生器（１）から
の冷媒蒸気および吸収液の大部分を管路（25）経由で蒸
発器（４）および吸収器（５）の器胴内へ流すことによ
り、熱交換器（30）から温水を取出す暖房運転時、開閉
弁（V1），（V2），（V3）が開かれ、凝縮器（３）の気
相部と第３タンク（T3）のそれとが連通すると共にこの
タンクと第1,第２タンク（T1），（T2）とが連通する。
また、減圧弁（Ｖ）も開かれて蒸発器（４）および吸収
器（５）の器胴の気相部と凝縮器（３）のそれとも連通
する。そして、吸収冷凍機の暖房運転時における蒸発器
（４）および吸収器（５）の器胴内の飽和蒸気圧が例え
ば約180mmHgであれば、凝縮器（３）内のそれは150mmHg
程度であり、また、第３タンク（T3）のそれは100mmHg
程度となり、かつ、第1,第２タンク（T2），（T3）内圧
も同様に100mmHg程度となる。すなわち、第1,第２タン
ク（T1），（T2）内圧は暖房運転時での上記器胴内圧よ
りもやゝ低い程度に保たれる。それ故、吸収冷凍機の運
転が冷房運転から暖房運転へ切換わっても、その直後お
よび暖房運転中に上記器胴からの吸収液が第1,第２タン
ク（T1），（T2）内へ侵入してこれらに充満するような
ことはなく、パラジウム・セル（P1），（P2）が吸収液
で腐食されるおそれも少ない。On the other hand, the cooling / heating switching valve (V 0 ) is opened and most of the refrigerant vapor and the absorbing liquid from the high temperature regenerator (1) are passed through the pipe line (25) to the body of the evaporator (4) and the absorber (5). By flowing the hot water into the heat exchanger (30), the open / close valves (V 1 ), (V 2 ), and (V 3 ) are opened during the heating operation to extract hot water from the heat exchanger (30), and This tank communicates with that of the third tank (T 3 ), and this tank communicates with the first and second tanks (T 1 ), (T 2 ).
Further, the pressure reducing valve (V) is also opened to communicate with the vapor phase portion of the body of the evaporator (4) and the absorber (5) and that of the condenser (3). When the saturated vapor pressure in the body of the evaporator (4) and the absorber (5) during the heating operation of the absorption refrigerator is, for example, about 180 mmHg, that in the condenser (3) is 150 mmHg.
And that of the third tank (T 3 ) is 100mmHg
The internal pressures of the first and second tanks (T 2 ) and (T 3 ) are also about 100 mmHg. That is, the internal pressures of the first and second tanks (T 1 ) and (T 2 ) are kept at a level slightly lower than the internal pressure of the above-mentioned body during heating operation. Therefore, even when the operation of the absorption refrigerator is switched from the cooling operation to the heating operation, immediately after that and during the heating operation, the absorption liquid from the above-mentioned body is in the first and second tanks (T 1 ), (T 2 ). It will not invade inside and fill them, and there is little risk that the palladium cells (P 1 ) and (P 2 ) will be corroded by the absorbing liquid.
また、吸収冷凍機の暖房運転時には高温再生器（１）側
から分離器（８）、管路（20）、低温再生器（２）の加
熱器（28）、管路（21）経由で凝縮器（３）へ流れる冷
媒蒸気の量は少ないので、抽気管（59）経由で不凝縮ガ
スと共に第３タンク（T3）へ流れ込む冷媒蒸気の量も少
なくなる。したがって、暖房運転時、ガス排出管（69）
経由で真空ポンプにより第３タンク（T3）から不凝縮ガ
スと共に機外へ排気される冷媒蒸気の量を少なくするこ
ともできる。なお、暖房運転への切換の際に、弁（V3）
の閉から開への切換えを弁（V1），（V2）のそれよりも
遅らせるようにしても良い。Further, during heating operation of the absorption refrigerator, condensation is performed from the high temperature regenerator (1) side via the separator (8), the pipe (20), the heater (28) of the low temperature regenerator (2), and the pipe (21). Since the amount of the refrigerant vapor flowing into the container (3) is small, the amount of the refrigerant vapor flowing into the third tank (T 3 ) together with the non-condensable gas via the extraction pipe (59) is also small. Therefore, during heating operation, the gas exhaust pipe (69)
It is also possible to reduce the amount of refrigerant vapor exhausted from the third tank (T 3 ) together with the non-condensable gas to the outside of the machine by the vacuum pump. When switching to heating operation, the valve (V 3 )
The switching of the valve from closed to open may be delayed after that of the valves (V 1 ) and (V 2 ).
このように、冷暖切換型吸収冷凍機の冷房運転時に機内
の吸収液を用いて不凝縮ガスを抽気する第１抽気経路お
よびガスの第１タンク（T1）と第２抽気経路および第２
タンク（T2）を備え、かつ、暖房運転時に凝縮器内から
ガスを抽気する第３抽気経路およびこれと連通する第３
タンク（T3）を備え、さらに、暖房運転時にこれらタン
クを連通させる構成とした本発明の抽気装置によれば、
吸収冷凍機の暖房運転中、あるいは暖房運転への切換え
直後にタンク内が吸収液で満たされることを防止できる
ので、タンクのパラジウム・セルやタンクから不凝縮ガ
スを排気する真空ポンプなどの損傷を防ぐことができ
る。かつまた、吸収液のタンク内での偏在に伴なう機内
の吸収液不足も防止できるので、発生器の空焚きや吸収
液用ポンプのキャビテーションなども防ぐことができ
る。Thus, during the cooling operation of the cooling / heating switching type absorption refrigerating machine, the first extraction path for extracting the non-condensable gas using the absorbing liquid in the machine, the first tank (T 1 ) for gas, the second extraction path and the second extraction path
A third extraction passage provided with a tank (T 2 ) and for extracting gas from the inside of the condenser during the heating operation, and a third extraction passage communicating with the third extraction passage.
According to the bleeding device of the present invention, which is provided with the tank (T 3 ), and is configured to communicate these tanks during the heating operation,
It is possible to prevent the tank from being filled with absorbing liquid during heating operation of the absorption chiller or immediately after switching to heating operation, so damage to the palladium cell of the tank and the vacuum pump that exhausts non-condensable gas from the tank, etc. Can be prevented. In addition, since it is possible to prevent the shortage of the absorbing liquid in the machine due to uneven distribution of the absorbing liquid in the tank, it is possible to prevent the generator from being water-fired and the cavitation of the absorbing liquid pump.
なお、本発明の抽気装置を一重効用の冷暖切換型吸収冷
凍機にも適用し得ることは無論である。尤もこの場合、
低温再生器（２）の加熱器（28）からガスを抽気する第
２抽気経路および第２タンク（T2）が不要となることは
勿論である。It is needless to say that the extraction device of the present invention can be applied to a single-effect cooling / heating switching type absorption refrigerator. But in this case,
It goes without saying that the second extraction path for extracting the gas from the heater (28) of the low temperature regenerator (2) and the second tank (T 2 ) are unnecessary.
なおまた、図に示した実施例において、吸収冷凍機の冷
房運転時に開閉弁（V3）も開くようにすることにより、
冷房運転時においても凝縮器（３）から不凝縮ガスを抽
気することが可能である。Further, in the embodiment shown in the drawing, by opening the on-off valve (V 3 ) during the cooling operation of the absorption refrigerator,
It is possible to extract the non-condensable gas from the condenser (3) even during the cooling operation.
（ト）発明の効果 以上の通り、本発明は、吸収冷凍機の冷水取出し運転か
ら温水取出し運転への切換え直後あるいは温水取出し運
転中における不凝縮ガス用タンクへの吸収液の侵入およ
び偏在を防いで吸収冷凍機の発生器の空焚防止効果や吸
収液用ポンプのキャビテーション防止効果を有すると共
に、タンクと接続するパラジウム・セルや排気ポンプの
吸収液による損傷の防止効果を有し、かつ、吸収冷凍機
の温水取出し時に冷媒蒸気の流入量の少ない凝縮器から
ガスを抽気しつつ機外へ排出するため、機外への冷媒放
出量の軽減効果も有し、実用的価値の高いものである。(G) Effects of the Invention As described above, the present invention prevents the absorption liquid from entering and unevenly distributed in the non-condensable gas tank immediately after the cold water extraction operation of the absorption refrigerator is switched to the hot water extraction operation or during the hot water extraction operation. It has the effect of preventing the generator of the absorption chiller from becoming dry and cavitation of the pump for absorbing liquid, and also has the effect of preventing damage due to the absorbing liquid of the palladium cell connected to the tank and the exhaust pump. When extracting hot water from the refrigerator, the gas is extracted from the condenser while extracting a small amount of refrigerant vapor and discharged outside the machine.Therefore, it also has the effect of reducing the amount of refrigerant discharged outside the machine, which is of high practical value. .
図面は本発明による抽気装置の一実施例を冷暖切換型二
重効用吸収冷凍機に適用した場合の概略構成説明図であ
る。 （１）……高温再生器、（２）……低温再生器、（３）
……凝縮器、（４）……蒸発器、（５）……吸収器、
（V0）……冷暖切換弁、（25）……管路、（28）……加
熱器、（35）……抽気槽、（36）……抽気管、（37）…
…降温器、（38）……液溜、（39），（40）……管、
（41）……気液導管、（42）……気液分離器、（43）…
…戻り管、（44）……管、（T1）……第１タンク、
（P1）……パラジウム・セル、（47）……管路、（Ｖ）
……減圧弁、（48）……管路、（54）……Ｌ字状管路、
（55）……管、（T2）……第２タンク、（P2）……パラ
ジウム・セル、（56）……気液分離槽、（57）……戻し
管、（59）……抽気管、（T3）……第３タンク、（60）
……冷却器、（61）……分岐管路、（62）……管路、
（63）……弁付き管、（P3）……パラジウム・セル、
（67），（68）……連通管、（V1），（V2），（V3）…
…開閉弁、（69）……ガス排出管。FIG. 1 is a schematic configuration explanatory view when an embodiment of the air extraction device according to the present invention is applied to a cooling / heating switching type double effect absorption refrigerator. (1) …… High temperature regenerator, (2) …… Low temperature regenerator, (3)
… Condenser, (4) …… Evaporator, (5) …… Absorber,
(V 0 ) …… Cooling / heating switching valve, (25) …… Pipe line, (28) …… Heating device, (35) …… Bleak tank, (36) …… Bleed pipe, (37)…
… Incubator, (38) …… Liquid reservoir, (39), (40)… Tube,
(41) …… Gas-liquid conduit, (42) …… Gas-liquid separator, (43)…
… Return pipe, (44) …… pipe, (T 1 ) …… first tank,
(P 1) .... palladium cells, (47) ... conduit, (V)
...... Reducing valve, (48) …… Pipe, (54) …… L-shaped pipe,
(55) …… Tube, (T 2 ) …… Second tank, (P 2 ) …… Palladium cell, (56) …… Gas-liquid separation tank, (57) …… Return pipe, (59) …… Bleed tube, (T 3 ) …… Third tank, (60)
…… Cooler, (61) …… Branching pipe, (62) …… Pipe,
(63) …… Valve tube, (P 3 ) …… Palladium cell,
(67), (68) …… Communication pipe, (V 1 ), (V 2 ), (V 3 )…
… Open / close valve, (69) …… Gas exhaust pipe.
Claims (1)
切換型吸収冷凍機の冷水取出し時に、吸収液を用いて吸
収器内および／または低温再生器の加熱器内の不凝縮ガ
スを抽気して吸収器あるいは低温再生器用のタンクへ導
きこのタンクから排出するよう構成した冷暖切換型吸収
冷凍機の抽気装置において、吸収冷凍機の温水取出し時
に凝縮器内から不凝縮ガスを抽気する抽気経路とこの抽
気経路に連通した凝縮器用のタンクとが吸収冷凍機に付
設され、かつ、このタンクと上記吸収器あるいは低温再
生器用のタンクとが管路により接続され、この管路には
吸収冷凍機の温水取出し時に開かれ冷水取出し時に閉じ
られる弁が設けられていることを特徴とした冷暖切換型
吸収冷凍機の抽気装置。1. A non-condensable gas in an absorber and / or in a heater of a low temperature regenerator is extracted by using an absorbing liquid at the time of taking out cold water of a cooling / heating switching type absorption refrigerator that takes out cold water or hot water from an evaporator. In the extraction system of the cooling / heating switching type absorption refrigerator configured to guide to and discharge from the tank for the absorber or the low temperature regenerator, the extraction path for extracting the non-condensed gas from the inside of the condenser at the time of taking out hot water of the absorption refrigerator and this A condenser tank communicating with the extraction passage is attached to the absorption refrigerator, and this tank and the absorber or low temperature regenerator tank are connected by a pipeline, and this pipeline is connected to hot water of the absorption refrigerator. A bleeder for a cooling / heating switching type absorption refrigerator, which is provided with a valve that is opened at the time of taking out and closed at the time of taking out cold water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6915388A JPH0718619B2 (en) | 1988-03-23 | 1988-03-23 | Cooling / heating switching type absorption chiller extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6915388A JPH0718619B2 (en) | 1988-03-23 | 1988-03-23 | Cooling / heating switching type absorption chiller extraction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01244262A JPH01244262A (en) | 1989-09-28 |
| JPH0718619B2 true JPH0718619B2 (en) | 1995-03-06 |
Family
ID=13394441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6915388A Expired - Fee Related JPH0718619B2 (en) | 1988-03-23 | 1988-03-23 | Cooling / heating switching type absorption chiller extraction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718619B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07117321B2 (en) * | 1990-03-28 | 1995-12-18 | 三洋電機株式会社 | Absorption chiller |
| CN107178938B (en) * | 2017-07-25 | 2023-02-03 | 远大空调有限公司 | Automatic exhaust system |
-
1988
- 1988-03-23 JP JP6915388A patent/JPH0718619B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01244262A (en) | 1989-09-28 |
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