JP2517420B2 - Absorption refrigerator - Google Patents
Absorption refrigeratorInfo
- Publication number
- JP2517420B2 JP2517420B2 JP2008934A JP893490A JP2517420B2 JP 2517420 B2 JP2517420 B2 JP 2517420B2 JP 2008934 A JP2008934 A JP 2008934A JP 893490 A JP893490 A JP 893490A JP 2517420 B2 JP2517420 B2 JP 2517420B2
- Authority
- JP
- Japan
- Prior art keywords
- absorber
- liquid
- generator
- absorption
- concentrated
- 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 本発明は吸収冷凍機に関し、特に複数の吸収器を備え
た吸収冷凍機に関する。TECHNICAL FIELD The present invention relates to an absorption refrigerating machine, and more particularly to an absorption refrigerating machine having a plurality of absorbers.
（ロ） 従来の技術 例えば、実公昭58-44297号公報には、蒸発吸収器胴内
の中央に蒸発器を配置し、この蒸発器の両側に吸収器を
配置し、蒸発吸収器胴の吸収液溜めに溜った稀吸収液を
吸収液ポンプから吐出し、この稀吸収液と発生器から流
れて来た高温の吸収液とを熱交換器にて熱交換し、温度
が上昇した稀吸収液を発生器へ送るように構成した吸収
冷凍機が開示されている。(B) Conventional technology For example, in Japanese Utility Model Publication No. 58-44297, an evaporator is arranged in the center of the evaporative absorber body, and absorbers are arranged on both sides of this evaporator to absorb the evaporative absorber body. The rare absorbent that has accumulated in the liquid reservoir is discharged from the absorbent pump, and this rare absorbent and the high temperature absorbent that has flowed from the generator exchange heat with a heat exchanger, resulting in a temperature rise of the rare absorbent. An absorption chiller is disclosed that is configured to deliver to a generator.
（ハ） 発明が解決しようとする課題 上記従来の技術において、吸収冷凍機の能力を例えば
倍にするために、蒸発吸収器胴を２台並列に配管接続
し、各蒸発吸収器胴と発生器との間に一つの熱交換器を
設け、各蒸発吸収器胴から流出した稀吸収液を上記熱交
換器にて発生器からの吸収液と熱交換するように構成し
た場合に、上記蒸発吸収器胴のうち一方の蒸発吸収器胴
のみを運転させたとき、熱交換器の流量流速が大幅に低
下して、熱交換器での稀吸収液と濃吸収液との熱交換性
能が低下するおそれがあった。(C) Problem to be Solved by the Invention In the above-mentioned conventional technique, in order to double the capacity of the absorption refrigerator, for example, two evaporation absorber cylinders are connected in parallel by piping, and each evaporation absorber cylinder and generator are connected. If one heat exchanger is installed between the evaporative absorber and the evaporative absorber, the rare absorbent flowing out of each evaporative absorber cylinder is exchanged with the absorbent from the generator by the heat exchanger. When only one evaporative absorber cylinder is operated, the flow velocity of the heat exchanger is significantly reduced, and the heat exchange performance between the rare absorbent and the concentrated absorbent in the heat exchanger is reduced. There was a fear.
本発明は、複数の蒸発吸収器胴を備えた吸収冷凍機に
おける一方の蒸発吸収器胴の停止時の稀吸収液と濃吸収
液との熱交換器での熱交換性能を向上させることを目的
とする。It is an object of the present invention to improve the heat exchange performance in a heat exchanger for a rare absorbent and a concentrated absorbent when an evaporative absorber cylinder in an absorption refrigerator having a plurality of evaporative absorber cylinders is stopped. And
（ニ） 課題を解決するための手段 本発明は上記課題を解決するために、複数の蒸発吸収
器胴（１），（33）と、これらの蒸発吸収器胴（１），
（33）の各吸収器から高温発生器（８）へ至る複数の稀
吸収液管（12），（13），（14），（44），（45），
（46）と、低温発生器（10）から各吸収器（３），
（４），（35），（36）へ至る複数の濃液管（18），
（50）と、各濃液管（18），（20），（50），（51）、
及び稀吸収液管（13）及び稀吸収液管（45），（46）ご
とに設けられて各濃液管を流れる濃吸収液と各稀吸収液
管を流れる稀吸収液とを熱交換する複数の熱交換器
（６），（47）とを備えた吸収冷凍機を提供するもので
ある。(D) Means for Solving the Problems In order to solve the above problems, the present invention provides a plurality of evaporation absorber cylinders (1), (33) and these evaporation absorber cylinders (1),
A plurality of rare absorption liquid pipes (12), (13), (14), (44), (45), from each absorber of (33) to the high temperature generator (8).
(46) and the low temperature generator (10) to each absorber (3),
Multiple concentrated liquid pipes (18) to (4), (35), (36),
(50) and each concentrated liquid tube (18), (20), (50), (51),
Also, heat exchange is performed between the concentrated absorbent liquid (13) and the concentrated absorbent liquid (45), (46) provided in each concentrated liquid pipe and flowing in each concentrated liquid pipe and the diluted absorbent liquid flowing in each rare absorbent liquid pipe. An absorption refrigerating machine provided with a plurality of heat exchangers (6) and (47).
又、複数の吸収器（３），（４），（35），（36）
と、これらの吸収器（３），（４），（35），（36）と
高温発生器（８）との間の各稀吸収液管（13），（14）
の間及び各稀吸収液管（45），（46）の間に設けられた
低温熱交換器（６），（47）と、これらの低温熱交換器
（６），（47）と低温発生器（10）との間の濃液管（1
8），（50）に設けられた濃液ポンプ（18P），（50P）
とを備えた吸収冷凍機を提供するものである。Also, a plurality of absorbers (3), (4), (35), (36)
And the rare absorption liquid pipes (13), (14) between these absorbers (3), (4), (35), (36) and the high temperature generator (8).
Low temperature heat exchangers (6), (47) provided between the pipes and between the rare absorption liquid pipes (45), (46), and low temperature heat exchangers (6), (47) and low temperature generation. Liquid tube (1) between the vessel (10)
8), concentrated liquid pump (18P), (50P) installed in (50)
An absorption refrigerating machine equipped with and is provided.
（ホ） 作用 吸収冷凍機の運転時、蒸発吸収器胴（１），（33）の
うち例えば蒸発吸収器胴（33）の運転が停止したとき、
低温熱交換器（47）には稀吸収液が流れなくなるが、低
温熱交換器（６）には稀吸収液が両蒸発吸収器胴
（１），（33）の運転時とほぼ同じ流速で流れ、低温熱
交換器（６）での熱交換性能を落とさずに蒸発吸収器胴
（１）の運転を継続することが可能になる。(E) Action When the absorption refrigerator is operated, for example, when the operation of the evaporation absorber cylinder (33) of the evaporation absorber cylinders (1) and (33) is stopped,
The rare absorbent does not flow into the low temperature heat exchanger (47), but the rare absorbent flows into the low temperature heat exchanger (6) at almost the same flow rate as when both evaporation absorber cylinders (1) and (33) are operating. It becomes possible to continue the operation of the evaporation absorber cylinder (1) without deteriorating the flow and heat exchange performance of the low temperature heat exchanger (6).
又、吸収冷凍機の運転時、負荷が減少して蒸発吸収器
胴（１），（33）のうち何れかの運転を停止するときに
は、濃液ポンプ（18P），（50P）のうち停止する蒸発吸
収器胴（１）、又は（33）に配管接続された濃液ポンプ
の運転を止めれば良く、濃液ポンプの運転を例えばイン
バータなどにより切換える必要がなく、吸収冷凍機の能
力の切換えを容易に行うことが可能になる。又、吸収冷
凍機が大型になった場合に、各低温熱交換器（６），
（47）にそれぞれ濃液ポンプ（18P），（50P）を配管接
続することによって、濃液ポンプの能力を大幅に向上さ
せる必要がなくなり、又、濃液ポンプに従来のものを使
用して特注などをしなくて済み、又、濃液ポンプの故障
時などには濃液ポンプの交換をスムーズに行うことが可
能になる。Also, when the absorption refrigerator is running and the load is reduced to stop the operation of one of the evaporation absorber cylinders (1) and (33), the concentrated liquid pumps (18P) and (50P) are stopped. It is sufficient to stop the operation of the concentrated liquid pump connected to the evaporative absorber cylinder (1) or (33) by piping, and it is not necessary to switch the operation of the concentrated liquid pump by, for example, an inverter. It becomes possible to do it easily. Also, when the absorption refrigerator becomes large, each low temperature heat exchanger (6),
By connecting the concentrated liquid pumps (18P) and (50P) to (47) respectively, it is not necessary to significantly improve the capacity of the concentrated liquid pumps. In addition, the concentrated liquid pump can be replaced smoothly when the concentrated liquid pump fails.
（ヘ） 実施例 以下、本発明の一実施例について図面に基づいて詳細
に説明する。(F) Example Hereinafter, one example of the present invention will be described in detail with reference to the drawings.
図面において、（１）は一方の蒸発吸収器胴であり、
この蒸発吸収器胴（１）の中央には蒸発器（２）が内蔵
され、この蒸発器（２）の両側にそれぞれ吸収器
（３），（４）が内蔵されている。又、（５）は吸収液
ポンプ、（６）は低温熱交換器、（７）高温熱交換器、
（８）は蒸発熱源の高温発生器、（９）は発生凝縮器
胴、（10）は低温発生器、（11）は凝縮器であり、それ
ぞれは稀吸収液管（12），（13），（14），（15）、中
間濃液管（16），（17）、濃液管（18），（20）、冷媒
管（21），（22），（23）、及び冷媒循環管（24）によ
り接続されている。そして、稀吸収管（14）、及び冷媒
配管（23）の途中に開閉弁（14A），（23A）が設けられ
ている。又、濃液管（18）の途中に濃液ポンプ（18
P）、及び開閉弁（18A）が設けられている。濃液管（2
0）が各第１吸収器（３），（４）の上部の濃液散布器
（3A），（4A）に接続されている。又、稀吸収液管（1
2）は蒸発吸収器胴（１）の下部に形成された吸収液溜
め（1A）に配管接続されている。さらに、（26）、及び
（27）はそれぞれ蒸発器（２）の上部、及び下部に設け
られた冷媒散布器、及び冷媒液溜めであり、冷媒散布器
（26）と冷媒液溜め（27）との間に冷媒循環管（24）が
接続されている。そして、この冷媒循環器（24）の途中
に冷媒液ポンプ（28）が設けられている。In the drawing, (1) is one evaporative absorber cylinder,
An evaporator (2) is built in the center of the evaporative absorber body (1), and absorbers (3), (4) are respectively installed on both sides of the evaporator (2). Further, (5) is an absorbent pump, (6) is a low temperature heat exchanger, (7) is a high temperature heat exchanger,
(8) is a high-temperature generator of the evaporation heat source, (9) is a generating condenser barrel, (10) is a low-temperature generator, and (11) is a condenser, and each is a dilute absorption liquid pipe (12), (13). , (14), (15), intermediate concentrated liquid pipes (16), (17), concentrated liquid pipes (18), (20), refrigerant pipes (21), (22), (23), and refrigerant circulation pipes. Connected by (24). On-off valves (14A) and (23A) are provided in the rare absorption pipe (14) and the refrigerant pipe (23). In addition, a concentrated liquid pump (18
P) and an on-off valve (18A) are provided. Concentrated liquid tube (2
0) is connected to the concentrated liquid sprayers (3A) and (4A) above the first absorbers (3) and (4). In addition, rare absorption liquid pipe (1
2) is connected by piping to an absorbent reservoir (1A) formed in the lower part of the evaporative absorber cylinder (1). Further, (26) and (27) are a refrigerant distributor and a refrigerant liquid reservoir provided on the upper and lower portions of the evaporator (2), respectively, and the refrigerant distributor (26) and the refrigerant liquid reservoir (27). A refrigerant circulation pipe (24) is connected between the and. A refrigerant liquid pump (28) is provided in the middle of the refrigerant circulator (24).
又、（30），（31）はそれぞれ冷却水管であり、これ
ら冷却水管（30），（31）の途中に冷却水熱交換器（30
a），（31a）が接続されている。さらに、（32）は冷水
管であり、この冷水管（32）の途中に冷水熱交換器（32
a）、及び冷水ポンプ（32P）が設けられている。Further, (30) and (31) are cooling water pipes, respectively, and the cooling water heat exchanger (30) is provided in the middle of these cooling water pipes (30) and (31).
a) and (31a) are connected. Further, (32) is a cold water pipe, and a cold water heat exchanger (32
a) and chilled water pump (32P) are provided.
（33）は他方の蒸発吸収器胴であり、（33A）は吸収
液溜め、（34）は蒸発器、（35），（36）は吸収器、
（37）は冷媒散布器、（38）は冷媒液溜め、（41）、及
び（42）は濃液散布器、（43）は吸収液ポンプである。
そして吸収液溜め（33A）は稀吸収液管（44），（4
5），（46）、吸収液ポンプ（43）、低温熱交換器（4
7）を介して稀吸収液管（14）に接続されている。そし
て、稀吸収液管（46）の途中に開閉弁（46A）が設けら
れている。又、低温発生器（10）は濃液管（50），（5
1）、及び低温熱交換器（47）を介して濃液散布器（4
1），（42）に接続されている。（50A），（50P）はそ
れぞれ濃液管（50）の途中に設けられた開閉弁、及び濃
液ポンプである。さらに、凝縮器（11）は冷媒管（5
3）、及び冷媒循環管（54）を介して冷媒散布器（3
7）、及び冷媒液溜め（38）に接続され、冷媒循環管（5
4）の途中には冷媒液ポンプ（55）が設けられている。
又、冷媒管（53）の途中には開閉弁（53A）が設けら
れ、この開閉弁（53A）は開閉弁（50A）と同様に蒸発吸
収器胴（33）の停止時に閉じる。(33) is the other evaporative absorber cylinder, (33A) is an absorption liquid reservoir, (34) is an evaporator, (35) and (36) are absorbers,
(37) is a refrigerant sprayer, (38) is a refrigerant liquid reservoir, (41) and (42) are concentrated liquid sprayers, and (43) is an absorbent pump.
And the absorption liquid reservoir (33A) is a rare absorption liquid pipe (44), (4
5), (46), absorbent pump (43), low temperature heat exchanger (4
It is connected to the rare absorption liquid pipe (14) via 7). An open / close valve (46A) is provided in the middle of the rare absorbent liquid pipe (46). Also, the low temperature generator (10) is a concentrated liquid pipe (50), (5
1) and the low temperature heat exchanger (47) through the concentrated liquid spreader (4
It is connected to 1) and (42). (50A) and (50P) are an on-off valve and a concentrated liquid pump provided in the middle of the concentrated liquid pipe (50), respectively. Further, the condenser (11) has a refrigerant pipe (5
3) and the refrigerant distributor (3) through the refrigerant circulation pipe (54).
7) and the refrigerant liquid reservoir (38), and the refrigerant circulation pipe (5
A refrigerant liquid pump (55) is provided in the middle of 4).
Further, an on-off valve (53A) is provided in the middle of the refrigerant pipe (53), and this on-off valve (53A) closes when the evaporation absorber body (33) stops like the on-off valve (50A).
又、（56），（57）はそれぞれ冷却水管であり、これ
らの冷却水管（56），（57）の途中に冷却水熱交換器
（56a），（57a）が設けられている。又、（58）は冷水
管であり、この冷水管（58）の途中に冷水熱交換器（58
a）、及び冷水ポンプ（58P）が設けられている。そし
て、冷却水管（30），（31）、及び（56），（57）はそ
れぞれ冷却水管（61），（62）、及び（63），（64）に
よってクーリングタワー（図示せず）に接続され、冷却
水管（61）、及び（63）の途中には、それぞれ冷却水ポ
ンプ（65）、及び（66）が設けられている。Further, (56) and (57) are cooling water pipes, and cooling water heat exchangers (56a) and (57a) are provided in the middle of these cooling water pipes (56) and (57). Further, (58) is a cold water pipe, and a cold water heat exchanger (58) is provided in the middle of this cold water pipe (58).
a) and chilled water pump (58P) are provided. The cooling water pipes (30), (31) and (56), (57) are connected to a cooling tower (not shown) by cooling water pipes (61), (62) and (63), (64), respectively. In the middle of the cooling water pipes (61) and (63), cooling water pumps (65) and (66) are provided, respectively.
上記吸収冷凍機の運転時、一方の蒸発吸収器胴（１）
の吸収器（３），（４）、蒸発器（２）、高温発生器
（８）、低温発生器（10）、凝縮器（11）、他方の蒸発
吸収器胴（33）の吸収器（35），（36）、及び蒸発器
（34）に吸収液、及び冷媒液が循環する。そして、冷媒
液が蒸発吸収器胴（１）の蒸発器（２）の冷水熱交換器
（32a）に冷媒液ポンプ（28）の運転によって冷媒散布
器（26）から散布される。散布された冷媒液は冷水熱交
換器（32a）にて蒸発し、冷水熱交換器（32a）を流れる
冷水が冷却され、温度低下した冷水が蒸発器（２）から
流出する。又、低温発生器（10）から低温熱交換器
（６）を介して流れて来た濃吸収液（以下濃液という）
が濃液散布器（3A），（4A）から冷却水熱交換器（30
a），（31a）に散布され、冷却される。蒸発器（２）で
気化した冷媒蒸気が各吸収器（３），（４）の濃液に吸
収される。そして、冷媒蒸気を吸収して濃度が薄くなっ
た稀吸収液が稀吸収液溜め（1A）に冷媒液ポンプ（５）
の運転によって低温熱交換器（６）へ送られ、低温発生
器（10）から流れて来た濃液と熱交換して温度上昇し、
高温熱交換器（７）へ流れる。そして、稀吸収液が、高
温熱交換器（７）にて高温発生器（８）から流れて来た
中間吸収液と熱交換し、さらに温度上昇して高温発生器
（８）へ送られる。One of the evaporation absorber cylinders (1) during operation of the absorption refrigerator
Absorbers (3), (4), evaporators (2), high temperature generators (8), low temperature generators (10), condensers (11), and absorbers of the other evaporation absorber cylinder (33) ( The absorption liquid and the refrigerant liquid circulate through the evaporators (34) and (35), (36). Then, the refrigerant liquid is sprayed from the refrigerant distributor (26) to the cold water heat exchanger (32a) of the evaporator (2) of the evaporation absorber body (1) by the operation of the refrigerant liquid pump (28). The sprayed refrigerant liquid is evaporated in the cold water heat exchanger (32a), the cold water flowing through the cold water heat exchanger (32a) is cooled, and the cold water having a lowered temperature flows out from the evaporator (2). Further, a concentrated absorbing liquid (hereinafter referred to as a concentrated liquid) flowing from the low temperature generator (10) through the low temperature heat exchanger (6).
From the concentrated liquid sprayers (3A) and (4A) to the cooling water heat exchanger (30
It is sprinkled on a) and (31a) and cooled. The refrigerant vapor vaporized in the evaporator (2) is absorbed by the concentrated liquid in each of the absorbers (3) and (4). Then, the rare absorption liquid, which has become thinner in concentration by absorbing the refrigerant vapor, is stored in the rare absorption liquid reservoir (1A) by the refrigerant liquid pump (5).
Is sent to the low temperature heat exchanger (6), heat exchanges with the concentrated liquid flowing from the low temperature generator (10), and the temperature rises,
It flows to the high temperature heat exchanger (7). Then, the rare absorption liquid exchanges heat with the intermediate absorption liquid flowing from the high temperature generator (8) in the high temperature heat exchanger (7), and the temperature is further raised to be sent to the high temperature generator (8).
高温発生器（８）にて稀吸収液は加熱され、稀吸収液
から冷媒蒸気が蒸発分離する。冷媒蒸気は冷媒管（21）
を介して低温発生器（10）へ流れ、高温発生器（８）か
ら流れて来た中間濃液を加熱して凝縮する。そして、凝
縮した冷媒液は冷媒管（22）を介して凝縮器（11）へ流
れる。又、低温発生器（10）にて加熱された中間濃液か
ら蒸発分離した冷媒蒸気は凝縮器（11）へ流れ、冷却器
（11a）によって冷却されて凝縮する。凝縮器（11）の
冷媒液溜め（11A）に溜った冷媒液は冷媒管（23）を介
して冷媒循環管（24）へ流れる。又、冷媒蒸気が分離し
て濃度が高くなった濃液は各吸収器（３），（４）へ送
られる。The rare absorbent is heated in the high temperature generator (8), and the refrigerant vapor is evaporated and separated from the rare absorbent. Refrigerant vapor is a refrigerant pipe (21)
To the low temperature generator (10), and the intermediate concentrated liquid flowing from the high temperature generator (8) is heated and condensed. Then, the condensed refrigerant liquid flows to the condenser (11) via the refrigerant pipe (22). The refrigerant vapor evaporated and separated from the intermediate concentrated liquid heated in the low temperature generator (10) flows into the condenser (11), is cooled by the cooler (11a) and is condensed. The refrigerant liquid accumulated in the refrigerant liquid reservoir (11A) of the condenser (11) flows into the refrigerant circulation pipe (24) via the refrigerant pipe (23). Further, the concentrated liquid whose concentration is increased by separating the refrigerant vapor is sent to the absorbers (3) and (4).
又、他方の蒸発吸収器胴（33）において、上記一方の
蒸発吸収器胴（１）と同様に冷媒液溜め（38）に溜った
冷媒液が冷媒液ポンプ（55）の運転によって冷媒散布器
（37）から冷水熱交換器（58a）に散布される。そし
て、冷却された冷水が蒸発器（34）から流出する。又、
濃液が低温発生器（10）から低温熱交換器（47）を介し
て濃液散布器（41），（42）へ送られ、冷却水熱交換器
（56a），（57a）に散布される。そして、水蒸器（34）
にて蒸発した冷媒蒸気が濃吸収液に吸収される。冷媒蒸
気を吸収して濃度が薄くなった稀吸収液は吸収液溜め
（33A）から吸収液ポンプ（43）を介して流出する。そ
して、稀吸収液は低温熱交換器（47）にて低温発生器
（10）から流れて来た濃液と熱交換して温度が上昇す
る。さらに、稀吸収液は一方の蒸発吸収器胴（１）と同
様に高温熱交換器（７）にてさらに温度上昇して高温発
生器へ送られる。Further, in the other evaporative absorber cylinder (33), the refrigerant liquid accumulated in the refrigerant liquid reservoir (38) in the same manner as the one evaporative absorber cylinder (1) is operated by the refrigerant liquid pump (55) to disperse the refrigerant. It is sprayed from (37) to the cold water heat exchanger (58a). Then, the cooled cold water flows out from the evaporator (34). or,
The concentrated liquid is sent from the low temperature generator (10) to the concentrated liquid dispersers (41) and (42) via the low temperature heat exchanger (47) and is dispersed to the cooling water heat exchangers (56a) and (57a). It And water steamer (34)
The refrigerant vapor evaporated at is absorbed by the concentrated absorbing liquid. The rare absorption liquid, which has absorbed the refrigerant vapor and has a low concentration, flows out from the absorption liquid reservoir (33A) through the absorption liquid pump (43). Then, the rare absorption liquid exchanges heat with the concentrated liquid flowing from the low temperature generator (10) in the low temperature heat exchanger (47), and the temperature rises. Further, the temperature of the rare absorption liquid is further raised in the high temperature heat exchanger (7) similarly to the one evaporation absorber body (1), and is sent to the high temperature generator.
上記のように吸収冷凍機の冷水負荷が大きいときには
蒸発吸収器胴（１），（33）に吸収液、及び冷媒が流
れ、双方の蒸発吸収器胴（１），（33）が運転される。
又、吸収冷凍機の冷水負荷が大幅に減少して、両蒸発吸
収器胴（１），（33）が運転されているときの1/2以下
に冷水負荷がなったときには、濃液ポンプ（50P）、冷
水ポンプ（58P）、及び冷却水ポンプ（66）は停止され
る。又、濃液管（50）、及び冷媒管（53）にそれぞれ設
けられた開閉弁（50A）、及び開閉弁（53A）が閉じ、さ
らに、稀吸収液管（46）の途中の開閉弁（46A）が閉
じ、吸収液ポンプ（43）及び冷媒液ポンプ（55）が運転
を停止する。このため、他方の蒸発吸収器胴（33）の運
転が停止する。そして、一方の蒸発吸収器胴（１）にお
いては、上記と同様に蒸発器（２）にて冷媒液が散布さ
れるとともに、吸収器（３），（４）にて濃吸収液が散
布され、冷媒の蒸発、吸収液による吸収が行われ、蒸発
器（２）から冷水が流出する。又、吸収液ポンプ（５）
から流出した稀吸収液は低温熱交換器（６）へ送られ、
低温発生器（10）から流れて来た濃液と熱交換して温度
上昇して高温熱交換器（７）へ流れる。このとき、吸収
液ポンプ（５）の稀吸収液吐出量、及び低温発生器（1
0）から低温熱交換器（６）へ流れる濃液の量は、両蒸
発吸収器胴（１），（33）が運転されているときと同じ
である。このため、低温熱交換器（６）において、稀吸
収液は両蒸発吸収器胴（１），（33）が運転されている
ときとほぼ同様に加熱され温度上昇する。そして、高温
熱交換器（７）へ送られた稀吸収液は高温発生器（８）
から流れて来た高温の中間吸収液と熱交換して温度が上
昇し、高温発生器（８）へ送られる。ここで、高温発生
器（８）を流れる稀吸収液の量、及び中間吸収液の量は
共に、両蒸発吸収器胴（１），（33）の運転時のほぼ1/
2になる。又、蒸発供給器胴（１），（33）のうち蒸発
吸収器胴（１）を停止するときには、各開閉弁（14
A），（18A）、及び（23A）が閉じると共に、稀吸収液
ポンプ（５）、冷媒液ポンプ（28）、濃液ポンプ（18
P）、冷水ポンプ（32P）、及び冷却水ポンプ（65）が停
止する。As described above, when the cold water load of the absorption refrigerator is large, the absorbing liquid and the refrigerant flow through the evaporation absorber cylinders (1) and (33), and both evaporation absorber cylinders (1) and (33) are operated. .
In addition, when the cold water load of the absorption refrigerator is significantly reduced and the cold water load becomes half or less of that when both evaporative absorber cylinders (1) and (33) are in operation, the concentrated liquid pump ( 50P), the cold water pump (58P), and the cooling water pump (66) are stopped. Further, the opening / closing valve (50A) and the opening / closing valve (53A) respectively provided in the concentrated liquid pipe (50) and the refrigerant pipe (53) are closed, and the opening / closing valve (50A) in the middle of the rare absorption liquid pipe (46) ( 46A) is closed, and the absorption liquid pump (43) and the refrigerant liquid pump (55) stop operating. Therefore, the operation of the other evaporation absorber body (33) is stopped. Then, in one of the evaporative absorber cylinders (1), the refrigerant liquid is sprayed in the evaporator (2) and the concentrated absorbent liquid is sprayed in the absorbers (3) and (4) as described above. , The refrigerant is evaporated, the absorption liquid is absorbed, and cold water flows out from the evaporator (2). Also, absorbent pump (5)
The rare absorption liquid flowing out from is sent to the low temperature heat exchanger (6),
It exchanges heat with the concentrated liquid flowing from the low temperature generator (10) to raise the temperature and flows into the high temperature heat exchanger (7). At this time, the discharge amount of the rare absorption liquid of the absorption liquid pump (5) and the low temperature generator (1
The amount of concentrated liquid flowing from 0) to the low temperature heat exchanger (6) is the same as when both evaporative absorber cylinders (1), (33) are in operation. Therefore, in the low temperature heat exchanger (6), the rare absorption liquid is heated and its temperature rises in substantially the same manner as when both the evaporative absorber cylinders (1) and (33) are operating. Then, the rare absorption liquid sent to the high temperature heat exchanger (7) is stored in the high temperature generator (8).
The temperature rises by exchanging heat with the high temperature intermediate absorbing liquid that has flowed from and is sent to the high temperature generator (8). Here, the amount of the dilute absorption liquid flowing through the high temperature generator (8) and the amount of the intermediate absorption liquid are both about 1 / (1) of those of the evaporative absorber cylinders (1), (33) during operation.
Become 2. Further, when stopping the evaporation absorber cylinder (1) of the evaporation supply cylinders (1), (33), each on-off valve (14
A), (18A), and (23A) are closed, and a rare absorption liquid pump (5), a refrigerant liquid pump (28), a concentrated liquid pump (18)
P), cold water pump (32P), and cooling water pump (65) stop.
上記実施例によれば、蒸発吸収器胴（１），（33）の
うち何れかの蒸発吸収器胴、例えば蒸発吸収器胴（33）
の運転が停止したときにも、吸収液溜め（1A）から流出
した稀吸収液が両蒸発吸収器胴（１），（33）の運転時
とほぼ同じ流速で低温熱交換器（６）を流れ、かつ、低
温発生器（10）から流出した濃液が両蒸発吸収器胴
（１），（33）の運転時とほぼ同じ流速で低温熱交換器
（６）へ流れるので、低温熱交換器（６）での稀吸収液
と濃液との熱交換性能を両蒸発吸収器胴（１），（33）
の運転時とほぼ等しく維持することができる。According to the above embodiment, one of the evaporation absorber cylinders (1) and (33), for example, the evaporation absorber cylinder (33).
Even when the operation of is stopped, the rare absorbent flowing out of the absorbent reservoir (1A) flows through the low temperature heat exchanger (6) at almost the same flow rate as when the evaporation absorber cylinders (1) and (33) are operating. Since the concentrated liquid flowing out and flowing out from the low temperature generator (10) flows into the low temperature heat exchanger (6) at almost the same flow rate as when the evaporation absorber cylinders (1) and (33) are operating, the low temperature heat exchange is performed. The heat exchange performance between the dilute absorption liquid and the concentrated liquid in the vessel (6) is determined by the two evaporation absorber cylinders (1), (33).
It can be maintained almost the same as when driving.
又、蒸発吸収器胴（１），（33）の双方が運転してい
るとき、低温発生器（10）から分配された濃液が各低温
熱交換器（６），（47）をそれぞれ通り、各蒸発吸収器
胴（１），（33）へ流れるので、低温発生器（10）と両
蒸発吸収器胴（１），（33）との間の配管に濃液を分配
するためのダンパーなどを設ける必要がなく、配管の構
成の簡略化を図ることができる。Further, when both the evaporation absorber cylinders (1) and (33) are operating, the concentrated liquid distributed from the low temperature generator (10) passes through the low temperature heat exchangers (6) and (47), respectively. , Dampers for distributing the concentrated liquid to the pipes between the low temperature generator (10) and both evaporation absorber cylinders (1), (33), because they flow to the evaporation absorber cylinders (1), (33). It is not necessary to provide the like, and the piping configuration can be simplified.
さらに、各低温熱交換器（６），（47）へ濃液を送る
濃液ポンプ（18P），（50P）をそれぞれ低温熱交換器
（６），（47）ごとに設けたので、蒸発吸収器胴（１）
或いは蒸発吸収器胴（33）を停止するときには、濃液ポ
ンプ（18P）或いは濃液ポンプ（50P）を停止すれば良
く、一台の濃液ポンプを備え、濃液ポンプの能力を例え
ばインバータなどを使用して低下させる場合などと比較
して、能力の変更を容易に行うことができる。又、低温
発生器（10）から両蒸発吸収器胴（１），（33）へ濃液
を送る濃液ポンプに一台の能力の大きい特殊使用のもの
を使用する場合と比較して濃液ポンプ（18P），（50P）
を各低温熱交換器（６），（47）ごとに配管接続した場
合には、各濃液ポンプ（18P），（50P）のコストを大幅
に低減することができ、又、濃液ポンプ（18P），（50
P）が故障した場合にはポンプの交換をスムーズに行う
ことができる。又、何れかの濃液ポンプ（18P），（50
P）が故障した場合に、故障していない濃液ポンプの運
転を継続して吸収冷凍機の運転を継続することができ
る。Further, since the concentrated liquid pumps (18P) and (50P) for feeding the concentrated liquid to the low temperature heat exchangers (6) and (47) are provided for the low temperature heat exchangers (6) and (47), respectively, the evaporation absorption Body (1)
Alternatively, when stopping the evaporation absorber cylinder (33), the concentrated liquid pump (18P) or the concentrated liquid pump (50P) may be stopped, and one concentrated liquid pump is provided, and the capacity of the concentrated liquid pump is, for example, an inverter. The ability can be easily changed as compared with the case where the value is reduced by using. In addition, compared to the case where a concentrated liquid pump that feeds the concentrated liquid from the low temperature generator (10) to both the evaporative absorber cylinders (1) and (33) is used, which has a large capacity and is specially used, Pump (18P), (50P)
If each of the low temperature heat exchangers (6) and (47) is connected by piping, the cost of each concentrated liquid pump (18P) and (50P) can be significantly reduced, and the concentrated liquid pump ( 18P), (50
If P) fails, the pump can be replaced smoothly. In addition, either concentrated liquid pump (18P), (50
When P) fails, the operation of the absorption chiller can be continued by continuing the operation of the concentrated liquid pump that has not failed.
尚、上記実施例において２台の蒸発吸収器胴（１），
（33）と一台の発生凝縮器胴（９）とを配管接続した吸
収冷凍機について説明したが、本発明は上記実施例に限
定されるものではなく、例えば２台以上の蒸発吸収器胴
と、高温発生器と発生凝縮器胴とを配管接続した吸収冷
凍機においても、各蒸発吸収器胴と高温発生器との間に
それぞれ低温熱交換器を設けた場合にも同様の作用効果
を得ることができる。In addition, in the above-mentioned embodiment, two evaporation absorber cylinders (1),
Although the absorption refrigerating machine in which (33) and one generator condenser cylinder (9) are connected by piping has been described, the present invention is not limited to the above-mentioned embodiment, and for example, two or more evaporation absorber cylinders. Also, in the absorption refrigerator in which the high temperature generator and the generation condenser cylinder are connected by piping, the same operation and effect can be obtained when a low temperature heat exchanger is provided between each evaporation absorber cylinder and the high temperature generator. Obtainable.
（ト） 発明の効果 本発明は以上のように構成された吸収冷凍機であり、
複数の蒸発吸収器胴と、これらの蒸発吸収器胴と、これ
らの蒸発吸収器胴の各吸収器から発生器へ至る複数の稀
吸収液管と、発生器から各吸収器へ至る複数の濃液管
と、各濃液管、及び各稀吸収液管ごとに設けられて各濃
液管を流れる濃吸収液と各稀吸収液管を流れる稀吸収液
とを熱交換する複数の熱交換器とを備えているので、各
蒸発吸収器胴が運転しているときには、各熱交換器に稀
吸収液が流れ、熱交換の効率向上を図ることができ、
又、いずれかの蒸発吸収器胴が停止したとき、運転され
ている蒸発吸収器胴に配管接続された熱交換器には、稀
吸収液、及び濃液がそれぞれの流量或いは流速が大幅に
減少することなく、いずれかの蒸発吸収器胴の停止前と
変わらずに流れ、稀吸収液及び濃液が継続して流れる熱
交換器の熱交換性能を維持しつつ、運転を継続すること
ができる。又、各蒸発吸収器胴の運転時発生器から流れ
て来た濃液は各低温熱交換器を介して各蒸発吸収器胴へ
流れるので、各低温熱交換器と各蒸発吸収器との間に流
量分配用のダンパーなどを設ける必要がなく、配管の簡
略化を図ることができる。(G) Effect of the Invention The present invention is an absorption refrigerator configured as described above,
A plurality of evaporative absorber cylinders, a plurality of these evaporative absorber cylinders, a plurality of dilute absorbent liquid pipes from each absorber of these evaporative absorber cylinders to a generator, and a plurality of concentrated absorbent pipes from a generator to each absorber. A plurality of heat exchangers for exchanging heat between the liquid pipes, the concentrated liquid pipes, and the rare absorbent liquid pipes and the concentrated absorbent liquids flowing through the concentrated liquid pipes and the rare absorbent liquids flowing through the rare absorbent liquid pipes. Since, since each evaporative absorber cylinder is operating, the rare absorption liquid flows into each heat exchanger, and the efficiency of heat exchange can be improved,
When one of the evaporative absorber bodies stops, the heat exchanger connected to the operating evaporative absorber body by piping has a significantly reduced flow rate or flow rate of the diluted absorbent and concentrated liquid. Without stopping, the operation can be continued while maintaining the heat exchanging performance of the heat exchanger in which the flow of the evaporative absorber is the same as before stopping, and the dilute absorbent and concentrated liquid continue to flow. . Further, since the concentrated liquid flowing from the generator during operation of each evaporative absorber cylinder flows to each evaporative absorber cylinder via each low temperature heat exchanger, there is a gap between each low temperature heat exchanger and each evaporative absorber. Since it is not necessary to provide a damper or the like for distributing the flow rate, the piping can be simplified.
又、複数の吸収器と発生器との間に接続された各稀吸
収液管の途中にそれぞれ低温熱交換器を設け、これらの
低温熱交換器と発生器との間の各濃液管の途中にそれぞ
れ濃液ポンプを設けたので、吸収冷凍機の冷凍能力を低
下させるとき、濃液ポンプのうちいずれかのポンプを停
止させることにより、濃液が吸収器へ流れることを止め
ることができ、この結果、濃液ポンプを例えばインバー
タなどを使用して制御する必要がなく、吸収冷凍機の冷
凍能力の切換えを容易に行うことができる。又、吸収冷
凍機が大型になった場合に、各低温熱交換器ごとに濃液
ポンプを配管接続することによって各濃液ポンプに能力
の小さいものを使用することができ、この結果、濃液ポ
ンプを特注する必要がなくなり、又、濃液ポンプの故障
時の交換をスムーズに行うことができる。Further, a low temperature heat exchanger is provided in the middle of each rare absorbent liquid pipe connected between the plurality of absorbers and the generator, and each concentrated liquid pipe between the low temperature heat exchanger and the generator is connected. Since the concentrated liquid pumps are provided on the way respectively, when reducing the refrigerating capacity of the absorption refrigerator, it is possible to stop the concentrated liquid from flowing to the absorber by stopping one of the concentrated liquid pumps. As a result, it is not necessary to control the concentrated liquid pump by using, for example, an inverter, and it is possible to easily switch the refrigerating capacity of the absorption refrigerator. Also, when the absorption refrigerator grows in size, it is possible to use a concentrated liquid pump with a small capacity by connecting a concentrated liquid pump to each low temperature heat exchanger. It is not necessary to custom-design the pump, and the concentrated liquid pump can be replaced smoothly when it fails.
図面は本発明の一実施例を示す吸収冷凍機の回路構成図
である。 （１），（33）……蒸発吸収器胴、（２），（34）……
蒸発器、（３），（４），（35），（36）……吸収器、
（６），（47）……低温熱交換器、（８）……高温発生
器、（12），（13），（14），（15），（44），（45）
……稀吸収液管、（18P），（50P）……濃液ポンプ。Drawing is a circuit block diagram of the absorption refrigerator which shows one example of the present invention. (1), (33) …… Evaporation absorber cylinder, (2), (34) ……
Evaporator, (3), (4), (35), (36) ... Absorber,
(6), (47) ... low temperature heat exchanger, (8) ... high temperature generator, (12), (13), (14), (15), (44), (45)
…… Rare absorption liquid pipe, (18P), (50P) …… Concentrated liquid pump.
Claims (2)
胴、発生器、及び凝縮器をそれぞれ配管接続し、吸収
液、及び冷媒の循環サイクルを形成し、かつ、吸収器と
発生器との間に、吸収器から発生器へ流れる稀吸収液と
発生器から吸収器へ流れる濃吸収液とを熱交換する熱交
換器を備えた吸収冷凍機において、複数の蒸発吸収器胴
と、これらの蒸発吸収器胴の各吸収器から発生器へ至る
複数の稀吸収液管と、発生器から各吸収器へ至る複数の
濃液管と、各濃液管、及び各稀吸収液管ごとに設けられ
て各濃液管を流れる濃吸収液と各稀吸収液管を流れる稀
吸収液とを熱交換する複数の熱交換器とを備えたことを
特徴とする吸収冷凍機。1. An evaporator / evaporator body containing an evaporator and an absorber, a generator, and a condenser are respectively connected by pipes to form a circulation cycle of an absorbent and a refrigerant, and the absorber and the generator. In between, and in the absorption refrigerator equipped with a heat exchanger for exchanging heat between the rare absorption liquid flowing from the absorber to the generator and the concentrated absorption liquid flowing from the generator to the absorber, a plurality of evaporation absorber cylinders, For each of these evaporative absorber cylinders, a plurality of rare absorbent liquid pipes from each absorber to the generator, a plurality of concentrated liquid pipes from the generator to each absorber, each concentrated liquid pipe, and each rare absorbent liquid pipe An absorption refrigerating machine provided with a plurality of heat exchangers for exchanging heat between the concentrated absorption liquid flowing in each concentrated liquid pipe and the rare absorption liquid flowing in each rare absorption liquid pipe.
器、及び凝縮器をそれぞれ配管接続し、吸収液、及び冷
媒の循環サイクルを形成し、かつ、吸収器と高温発生器
との間に吸収器から高温発生器へ流れる稀吸収液と低温
発生器から吸収器へ流れる濃吸収液とを熱交換させる低
温熱交換器とを備えた吸収冷凍機において、複数の吸収
器と、これらの吸収器と高温発生器との間に接続された
各稀吸収液管の途中にそれぞれ設けられた複数の低温熱
交換器と、これらの低温熱交換器と低温発生器との間の
各濃液管に設けられた濃液ポンプとを備えたことを特徴
とする吸収冷凍機。2. An evaporator, an absorber, a high-temperature generator, a low-temperature generator, and a condenser are respectively connected by pipes to form a circulation cycle of an absorbing liquid and a refrigerant, and the absorber and the high-temperature generator are connected to each other. In an absorption refrigerator having a low temperature heat exchanger for exchanging heat between a rare absorption liquid flowing from the absorber to the high temperature generator and a concentrated absorption liquid flowing from the low temperature generator to the absorber, a plurality of absorbers, Multiple low temperature heat exchangers respectively provided in the middle of the rare absorbent liquid pipes connected between the low temperature heat exchanger and the low temperature generator. An absorption refrigerator comprising a concentrated liquid pump provided in a liquid pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008934A JP2517420B2 (en) | 1990-01-18 | 1990-01-18 | Absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008934A JP2517420B2 (en) | 1990-01-18 | 1990-01-18 | Absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03263561A JPH03263561A (en) | 1991-11-25 |
| JP2517420B2 true JP2517420B2 (en) | 1996-07-24 |
Family
ID=11706498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008934A Expired - Fee Related JP2517420B2 (en) | 1990-01-18 | 1990-01-18 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2517420B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS582564A (en) * | 1981-06-26 | 1983-01-08 | 株式会社日立製作所 | Composite absorption type refrigerator |
| JPH0182464U (en) * | 1987-11-20 | 1989-06-01 |
-
1990
- 1990-01-18 JP JP2008934A patent/JP2517420B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03263561A (en) | 1991-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |