JPH02213659A - Absorption type freezer - Google Patents
Absorption type freezerInfo
- Publication number
- JPH02213659A JPH02213659A JP3428989A JP3428989A JPH02213659A JP H02213659 A JPH02213659 A JP H02213659A JP 3428989 A JP3428989 A JP 3428989A JP 3428989 A JP3428989 A JP 3428989A JP H02213659 A JPH02213659 A JP H02213659A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- absorption
- load
- absorption liquid
- temperature regenerator
- 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
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 104
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 239000000498 cooling water Substances 0.000 claims abstract description 40
- 238000010790 dilution Methods 0.000 claims description 46
- 239000012895 dilution Substances 0.000 claims description 46
- 239000003507 refrigerant Substances 0.000 claims description 44
- 239000006096 absorbing agent Substances 0.000 claims description 22
- 230000003111 delayed effect Effects 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000007865 diluting Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、運転停止時に稀釈運転を行う吸収冷凍機に関
する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an absorption refrigerator that performs dilution operation when the operation is stopped.
（ロ）従来の技術
例えば特開昭６１−３６６６１号公報には、吸収冷凍機
の運転停止時、タイマを動作させ、高温再生器の運転停
止時から所定時間冷媒ポンプ、及び吸収液ポンプを運転
させ、吸収液の結晶防止のために稀釈運転を行う吸収冷
凍機が開示されている。(b) Conventional technology For example, in Japanese Patent Application Laid-Open No. 61-36661, a timer is operated when the operation of the absorption chiller is stopped, and the refrigerant pump and the absorption liquid pump are operated for a predetermined period of time from the time when the operation of the high-temperature regenerator is stopped. An absorption refrigerator has been disclosed which performs dilution operation to prevent crystallization of the absorption liquid.
（八）発明が解決しようとする課題
上記従来の技術において、タイマに稀釈運転時間が設定
され常に一定なため、吸収冷凍機の濃吸収液の濃度が低
く、稀釈運転時間が短かくて済む場合にも、所定時間無
駄に冷媒ポンプ、及び吸収液ポンプが運転されるという
問題が発生していた。又、吸収冷凍機に設けられた冷却
水ポンプ、及び負荷配管の負荷ポンプを稀釈運転時、タ
イマにより所定時間運転させた場合、それぞれのポンプ
の容量は大きいため、稀釈運転が短かくて済む場合にも
各ポンプの運転により無駄に大きな電力が消費されると
いう問題が発生していた。(8) Problems to be Solved by the Invention In the above conventional technology, since the dilution operation time is set on a timer and is always constant, the concentration of the concentrated absorption liquid in the absorption refrigerator is low and the dilution operation time can be shortened. However, a problem has also occurred in which the refrigerant pump and the absorption liquid pump are operated in vain for a predetermined period of time. Also, if the cooling water pump installed in the absorption chiller and the load pump in the load piping are operated for a predetermined period of time using a timer during dilution operation, the capacity of each pump is large, so the dilution operation can be shortened. However, there was a problem in that a large amount of power was wasted by operating each pump.
本発明は、稀釈運転時の、各ポンプの無駄な運転を抑え
、電力消費を低減して運転コストを下げることを目的と
する。An object of the present invention is to suppress wasteful operation of each pump during dilution operation, reduce power consumption, and lower operating costs.
（ニ）課題を演法するための手段
本発明は上記課題を解決するために、吸収器（５）、再
生器（１）、凝縮器（３）、及び蒸発器（４）をそれぞ
れ配管接続し、運転停止時には吸収液の稀釈運転を行う
吸収冷凍機において、運転停止信号が与えられた時の再
生器温度に基づいて稀釈運転時間を制御する吸収冷凍機
を提供するものである。(d) Means for solving the problem In order to solve the above problem, the present invention provides an absorber (5), a regenerator (1), a condenser (3), and an evaporator (4) that are each connected by piping. Another object of the present invention is to provide an absorption refrigerating machine that performs an absorption liquid dilution operation when the operation is stopped, and which controls the dilution operation time based on the regenerator temperature when the operation stop signal is given.
又、吸収器（５）、高温再生器（１）、凝縮器（３）、
及び蒸発器（４）をそれぞれ配管接続し、蒸発器（４）
に冷媒ポンプ（１９）を設け、吸収器（５）と高温再生
器（１）との間に吸収液ポンプ（１５）を設け、運転停
止時に高温再生器（１）の停止後冷媒ポンプ（１９）、
及び吸収液ポンプ（１５）を運転させ、吸収液の稀釈運
転を行う吸収冷凍機において、稀釈運転時の冷媒ポンプ
（１９）、及び吸収液ポンプ（１５）の運転時間を運転
停止信号が与えられた時の高温再生器の温度に基づいて
制御する吸収冷凍機を提供するものである。Also, an absorber (5), a high temperature regenerator (1), a condenser (3),
and the evaporator (4) are connected to each other via piping, and the evaporator (4)
A refrigerant pump (19) is provided between the absorber (5) and the high-temperature regenerator (1), and an absorption liquid pump (15) is provided between the absorber (5) and the high-temperature regenerator (1). ),
In an absorption refrigerator that operates an absorption liquid pump (15) and performs an absorption liquid dilution operation, an operation stop signal is given to the operation time of the refrigerant pump (19) and absorption liquid pump (15) during dilution operation. The present invention provides an absorption refrigerator that is controlled based on the temperature of a high-temperature regenerator when the temperature is high.
更に、吸収器（５）、高温再生器（１）、凝縮器（３）
、及び蒸発器（４）をそれぞれ配管接続し、吸収器（５
）、及び凝縮器（３）に冷却水配管（２５）を設け、蒸
発器（４）に負荷配管（２２）を設け、冷却水配管、及
び負荷配管にそれぞれ冷却水ポンプ（２９）、及び負荷
ポンプ（２８）を設け、更に、蒸発器（４〉に冷媒ポン
プ（１９）、吸収器（５）と高温再生器（１）との間に
吸収液ポンプ（１５）を設け、運転停止時に、高温再生
器（１）の停止後、冷却水ポンプ（２９〉、負荷ポンプ
（２８）、冷媒ポンプ（１９）、及び吸収液ポンプ（１
５）を運転させ、吸収液の稀釈運転を行う吸収冷凍機に
おいて、運転停止信号が与えられた時の高温再生器の温
度に基づいて稀釈運転時の冷却水ポンプ（２９）、及び
負荷ポンプ（２８）の運転時間を制御する吸収冷凍機を
提供するものである。Furthermore, an absorber (5), a high temperature regenerator (1), and a condenser (3)
, and the evaporator (4) are connected to each other via piping, and the absorber (5
) and the condenser (3) are provided with a cooling water pipe (25), the evaporator (4) is provided with a load pipe (22), and the cooling water pipe and the load pipe are provided with a cooling water pump (29) and a load pipe, respectively. A pump (28) is provided, and a refrigerant pump (19) is provided in the evaporator (4), and an absorption liquid pump (15) is provided between the absorber (5) and the high temperature regenerator (1). After the high temperature regenerator (1) is stopped, the cooling water pump (29), load pump (28), refrigerant pump (19), and absorption liquid pump (1)
5) in the absorption refrigerator which performs the dilution operation of the absorption liquid, the cooling water pump (29) during the dilution operation and the load pump ( 28) provides an absorption refrigerating machine that controls the operating time.
又、吸収器（５）、高温再生器（１）、凝縮器（３）、
及び蒸発器（４）をそれぞれ配管接続し、吸収器（５）
及び凝縮器（３）に冷却水配管（２５）を設け、蒸発器
（４）に負荷配管（２２）を設け、冷却水配管（２５）
、及び負荷配管（２２）にそれぞれ冷却水ポンプ（２９
）、及び負荷ポンプ（２８）を設け、更に蒸発器（４）
に冷媒ポンプ（１９）、吸収器（５）と高温再生器（１
）との間に吸収液ポンプ（１５）を設け、運転停止時に
、高温再生器（１）の停止後、冷却水ポンプ（２９）、
負荷ポンプ（２８）、冷媒ポンプ（１９）、及び吸収液
ポンプ（１５）を運転させ、吸収液の稀釈運転を行う吸
収冷凍機において、運転停止信号が出力された時の高温
再生器の温度に基づいて稀釈運転時の負荷ポンプ（２８
）、及び冷媒ポンプ（１９）の運転時間を制御し、且つ
、負荷ポンプ（２８）の運転停止を冷媒ポンプ（１９）
の運転停止から所定時間遅延させる吸収冷凍機を提供す
るものである。Also, an absorber (5), a high temperature regenerator (1), a condenser (3),
and the evaporator (4) are connected to each other via piping, and the absorber (5)
A cooling water pipe (25) is provided in the condenser (3), a load pipe (22) is provided in the evaporator (4), and a cooling water pipe (25) is provided in the evaporator (4).
, and a cooling water pump (29) to the load pipe (22), respectively.
), and a load pump (28), and further an evaporator (4).
refrigerant pump (19), absorber (5) and high temperature regenerator (1).
), and when the operation is stopped, after the high temperature regenerator (1) is stopped, the cooling water pump (29),
In an absorption refrigerator that operates the load pump (28), refrigerant pump (19), and absorption liquid pump (15) to dilute the absorption liquid, the temperature of the high temperature regenerator when the operation stop signal is output is Based on the load pump during dilution operation (28
), and the operation time of the refrigerant pump (19), and also controls the operation of the refrigerant pump (19) to stop the operation of the load pump (28).
The purpose of the present invention is to provide an absorption refrigerating machine that delays the operation of the refrigerator for a predetermined period of time after the operation is stopped.
（＊）作用
吸収冷凍機の停止時に行われる稀釈運転の時間が運転停
止信号出力時の再生器温度に基づいて変化し、再生器温
度が低く吸収液濃度が低いときには稀釈運転時間が短く
なるため、稀釈運転時に消費きれるエネルギーを低減す
ることができ運転コストの低減を図ることが可能になる
。(*) Effect The dilution operation time performed when the absorption chiller is stopped changes based on the regenerator temperature when the operation stop signal is output, and the dilution operation time becomes shorter when the regenerator temperature is low and the absorption liquid concentration is low. , the energy consumed during dilution operation can be reduced, making it possible to reduce operating costs.
又、運転停止信号出力時の高温再生器（１）の温度が低
く吸収液濃度が低いときには、稀釈運転時の吸収液ポン
プ（１５）、及び冷媒ポンプ（１９）の運転時間が短く
なり、それぞれのポンプ（１５） 、 （１９）が消費
する電力を少なくすることができ、吸収冷凍機の運転コ
ストを低減することが可能になる。Furthermore, when the temperature of the high temperature regenerator (1) is low and the concentration of the absorption liquid is low when the operation stop signal is output, the operation time of the absorption liquid pump (15) and the refrigerant pump (19) during the dilution operation is shortened. The power consumed by the pumps (15) and (19) can be reduced, and the operating cost of the absorption refrigerator can be reduced.
更に、運転停止信号出力時の高温再生器（１）の温度が
低く、吸収液濃度が低いときには、稀釈運転時の負荷ポ
ンプ（２８〉及び冷却水ポンプ（２９）の運転時間が短
くなり、吸収液ポンプ（１５）、及び冷媒ポンプ（１９
）より容量が大きく、消費電力が大きい負荷ポンプ（２
８）、及び冷却水ポンプ（２９）の消費電力を少なくす
ることができ、吸収冷凍機の運転コストを大幅に低減す
ることが可能になる。Furthermore, when the temperature of the high-temperature regenerator (1) is low and the absorption liquid concentration is low when the operation stop signal is output, the operation time of the load pump (28>) and the cooling water pump (29) during dilution operation is shortened, and the absorption Liquid pump (15) and refrigerant pump (19)
) has a larger capacity and higher power consumption than the load pump (2
8) and the cooling water pump (29) can be reduced, and the operating cost of the absorption refrigerator can be significantly reduced.
又、運転停止信号出力時の高温再生器（１）の温度が低
く、吸収液濃度が低いときには、稀釈運転時の負荷ポン
プ（２８）、及び冷媒ポンプ（１９）の運転・時間が短
くなり、それぞれのポンプ（２８） 、 （１９）の消
費電力を少な゛くすることができ、又、稀釈運転時、負
荷ポンプ（２８）の運転停止が冷媒ポンプ（１９）の運
転停止から所定時間遅延するため、その間負荷配管（２
２）を冷水が循環し、蒸発器（４）にて負荷配管（２２
）内の冷水が凍結することを防止することが可能になる
。Furthermore, when the temperature of the high temperature regenerator (1) is low and the absorption liquid concentration is low when the operation stop signal is output, the operation time of the load pump (28) and the refrigerant pump (19) during dilution operation is shortened. The power consumption of each of the pumps (28) and (19) can be reduced, and during dilution operation, the stoppage of the load pump (28) is delayed by a predetermined time from the stoppage of the refrigerant pump (19). Therefore, the load piping (2
2), the cold water circulates through the evaporator (4) and the load pipe (22
) can be prevented from freezing.
（へ）実施例
以下、本発明の一実施例を図面に基づいて詳細に説明す
。(F) Example Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図に示したものは二重効用吸収冷凍機であり、冷媒
に水（Ｕ＊Ｏ）、吸収剤（吸収液）に臭化リチウム（Ｌ
ｉＢｒ）水溶液を使用したものである。The one shown in Figure 1 is a dual-effect absorption refrigerator, in which the refrigerant is water (U*O) and the absorbent (absorbing liquid) is lithium bromide (L).
iBr) using an aqueous solution.
第１図において、（１）はガスバーナ（ＩＢ）を備えた
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）は低温熱交換器
、（７）は高温熱交換器、（８）ないしく１２）は吸収
液配管、（１５）は吸収液ポンプ、（１６）ないしく１
８）は冷媒配管、（１９）は冷媒ポンプ、（２０）はガ
スバーナ（ＩＢ）に接続されたガス配管、（２１）は加
熱量制御弁、（２２）は冷水配管（負荷配管）であり、
それぞれは第１図に示したように配管接続されている。In Figure 1, (1) is a high temperature regenerator equipped with a gas burner (IB), (2) is a low temperature regenerator, (3) is a condenser, (
4) is the evaporator, (5) is the absorber, (6) is the low temperature heat exchanger, (7) is the high temperature heat exchanger, (8) or 12) is the absorption liquid piping, and (15) is the absorption liquid pump. , (16) or 1
8) is a refrigerant pipe, (19) is a refrigerant pump, (20) is a gas pipe connected to a gas burner (IB), (21) is a heating amount control valve, (22) is a cold water pipe (load pipe),
Each is connected by piping as shown in FIG.
又、（２５）は冷却水配管であり、この冷却水配管（２
５）の途中には吸収器熱交換器（２６）、及び凝縮器熱
交換器（２７）が設けられている。更に、（２８）は冷
水配管（２２）の途中に設けられた負荷ポンプ、（２９
）は冷却水配管（２５）の途中に設けられた冷却水ポン
プであり、負荷ポンプ（２８）、及び冷却水ポンプ（２
９）の容量は吸収液ポンプ（１５）、及び冷媒ポンプ（
１９）より大きい。In addition, (25) is a cooling water pipe, and this cooling water pipe (2
5) is provided with an absorber heat exchanger (26) and a condenser heat exchanger (27). Furthermore, (28) is a load pump installed in the middle of the cold water pipe (22), and (29)
) is a cooling water pump installed in the middle of the cooling water pipe (25), and is connected to the load pump (28) and the cooling water pump (2).
9) has the capacity of the absorption liquid pump (15) and the refrigerant pump (
19) Greater than.
（３１）は高温再生器（１）に設けられた温度検出器で
あり、この温度検出器（３１）は高温再生器（１）内の
吸収液（中間液）温度（以下高温再生器温度という）を
検出する。又、（３２）は制御装置であり、この制御装
置（３２）に温度検出器（３１）、及び各ポンプ（１５
） 、 （１９） 、 （２Ｂ） 、 （２９＞が接続
されている。ここで、制御装置（３２）には第２図、及
び第３図に示したように、吸収冷凍機の運転停止時に高
温再生器（１）が燃焼を停止してから吸収液ポンプ（１
５）、冷媒ポンプ（１９）、負荷ポンプ（２８）、及び
冷却水ポンプ（２９）が同時に運転される共通運転時間
（ＴＩ）と、この共通運転時間（Ｔ１）が経過し、冷媒
ポンプ（１９）及び冷却水ポンプ（２９）が停止してか
ら吸収液ポンプ（１５）が運転を継続する吸収液ポンプ
運転継続時間（以下吸収液ポンプ時間という）（１，）
と、共通運転時間（Ｔ、）が経過してから負荷ポンプ（
２８）が運転を継続する負荷ポンプ運転継続時間（例え
ば１分、以下負荷ポンプ時間という）（Ｔ、）とが設定
きれている。そして、上記共通運転時間（Ｔ、）、及び
吸収液ポンプ時間（Ｔ、）は第３図に示したようにそれ
ぞれ、吸収冷凍機の停止信号が出力きれたときの高温再
生画温度が高くなるのに伴い長くなる、更に、制御装置
（３２）には第２図に示したよう鎧、停止信号が出力さ
れてから高温再生器（１）が低燃焼運転を行う低燃焼時
間（工、）が設定されている。(31) is a temperature detector installed in the high-temperature regenerator (1), and this temperature detector (31) detects the temperature of the absorption liquid (intermediate liquid) in the high-temperature regenerator (1) (hereinafter referred to as high-temperature regenerator temperature). ) is detected. Further, (32) is a control device, and this control device (32) is equipped with a temperature detector (31) and each pump (15).
), (19), (2B), (29>) are connected to the control device (32), as shown in Figs. 2 and 3, when the absorption chiller stops operating. After the high temperature regenerator (1) stops combustion, the absorbent pump (1)
5), the common operation time (TI) in which the refrigerant pump (19), the load pump (28), and the cooling water pump (29) are operated simultaneously, and after this common operation time (T1) has elapsed, the refrigerant pump (19) ) and the absorption liquid pump operation duration (hereinafter referred to as absorption liquid pump time) (1,) during which the absorption liquid pump (15) continues to operate after the cooling water pump (29) stops.
Then, after the common operation time (T, ) has elapsed, the load pump (
The load pump operation continuation time (for example, 1 minute, hereinafter referred to as load pump time) (T,) during which the pump 28) continues to operate has been set. As shown in Fig. 3, the common operation time (T, ) and the absorption liquid pump time (T, ) respectively increase the high temperature regenerated image temperature when the absorption chiller stop signal is output. In addition, as shown in Figure 2, the control device (32) has a low combustion time (duration) during which the high temperature regenerator (1) performs low combustion operation after the stop signal is output. is set.
以下、上記吸収冷凍機の動作について説明する。吸収冷
凍機の運転時には、従来の吸収冷凍機と同様に高温再生
器（１）が運転されると共に、各ポンプ（１５） 、
（１９） 、 ＜２８）、及び（２９）が運転される。The operation of the absorption refrigerator will be explained below. When the absorption chiller is in operation, the high temperature regenerator (1) is operated in the same manner as in the conventional absorption chiller, and each pump (15),
(19), <28), and (29) are operated.
そして、吸収冷凍機の運転管理者が運転を停止させるた
めに例えば制御盤の停止スイッチ（共に図示せず）を操
作すると、制御装置（３２）は運転停止信号に基づいて
動作し、稀釈運転が開始される。そして、制御装置（３
２）から加熱量制御弁（２１）へ開度信号が出力され、
加熱量制御弁（２１）の開度が小きくなり、ガスバーナ
（ＩＢ）は低燃焼になる。When the operation manager of the absorption chiller operates, for example, a stop switch (not shown) on the control panel to stop the operation, the control device (32) operates based on the operation stop signal, and the dilution operation is started. will be started. Then, the control device (3
2) outputs an opening signal to the heating amount control valve (21),
The opening degree of the heating amount control valve (21) becomes small, and the gas burner (IB) becomes low in combustion.
停止信号が出力きれ、ガスバーナ（ＩＢ）が低燃焼にな
ってから低燃焼時間（Ｔ４）が経過すると、制御装置（
３２）が動作し、加熱量制御弁（２１）へ閉信号を出力
し、ガスバーナ（ＩＢ）の燃焼は停止する。上記ガスバ
ーナ（ＩＢ）の低燃焼時、吸収液ポンプ（１５）、冷媒
ポンプ（１９）、負荷ポンプ（２８）、及び冷却水ポン
プ（２９）は運転を継続している。そして、それぞれの
ポンプ＜１５） 、 （１９） 、 （２８）、及び（
２９）はガスバーナ（ＩＢ）の燃焼停止後も運転をＪ１
統し、吸収液、冷媒、冷水、及び冷却水は吸収冷凍機を
循環する。When the stop signal is no longer output and the low combustion time (T4) has elapsed since the gas burner (IB) became low combustion, the control device (
32) operates, outputs a closing signal to the heating amount control valve (21), and combustion of the gas burner (IB) is stopped. During low combustion of the gas burner (IB), the absorption pump (15), refrigerant pump (19), load pump (28), and cooling water pump (29) continue to operate. And each pump <15), (19), (28), and (
29) continues to operate J1 even after the combustion of the gas burner (IB) has stopped.
The absorption liquid, refrigerant, chilled water, and cooling water circulate through the absorption refrigerator.
又、運転停止信号が出力された時には温度検出器（３１
〉からの信号に基づいて制御装置（３２）が動作し、高
温再生器温度に基づいて共通運転時間（Ｔ□）及び吸収
液ポンプ時間（ｒ＊）が設定される。Also, when the operation stop signal is output, the temperature detector (31
The control device (32) operates based on the signal from >, and the common operation time (T□) and absorption liquid pump time (r*) are set based on the high temperature regenerator temperature.
高温再生器（１）の運転停止後も各ポンプ（１５） 。Each pump (15) remains active even after the high temperature regenerator (1) stops operating.
（１９） 、 （２８）、及び（２９）が運転を継続す
るため、低温再生器（２）から流出する濃吸収液濃度は
次第に低下し、又、蒸発器（４）からは冷水が負荷へ供
給される。そして、高温再生器（１）の運転停止後共通
運転時間（τ、）が経過すると、制御装置（３２）が動
作し、冷媒ポンプ（１９）、及び冷却水ポンプ（２９）
へ停止信号を出力し、それぞれのポンプ（１９）、及び
（２９）は運転を停止する。共通運転時間（Ｉ’、）が
経過した後も、制御装置（３２）からの信号に基づいて
吸収液ポンプ（１５）、及び負荷ポンプ（２８）は運転
を継続し、吸収液が高温再生器（１）、低温再生器（２
）へ循環すると共に、負荷の冷水が蒸発器（４）に循環
して稀釈運転が行われる。(19), (28), and (29) continue to operate, the concentration of the concentrated absorption liquid flowing out from the low-temperature regenerator (2) gradually decreases, and cold water flows from the evaporator (4) to the load. Supplied. Then, when the common operation time (τ, ) has elapsed after the high temperature regenerator (1) stopped operating, the control device (32) operates, and the refrigerant pump (19) and the cooling water pump (29)
A stop signal is output to the pumps (19) and (29), and the operation of each pump (19) and (29) is stopped. Even after the common operation time (I', ) has elapsed, the absorption liquid pump (15) and the load pump (28) continue to operate based on the signal from the control device (32), and the absorption liquid is transferred to the high temperature regenerator. (1), low temperature regenerator (2)
), and the load cold water is also circulated to the evaporator (4) for dilution operation.
冷媒ポンプ（１９）、及び冷却水ポンプ（２９）が運転
を停止してから負荷ポンプ時間（Ｔ、）が経過すると、
制御装置く３２）が動作し、負荷ポンプ（２８）へ停止
信号を出力し、負荷ボンブク２８）は運転を停止する。When the load pump time (T, ) has passed since the refrigerant pump (19) and the cooling water pump (29) stopped operating,
The control device 32) operates, outputs a stop signal to the load pump (28), and the load pump 28) stops operating.
負荷ポンプ時間（Ｔ、）が経過した後も、吸収液ポンプ
（１５）は運転を継続し、吸収液が循環し、吸収液濃度
は次第に低下する。そして、冷媒ポンプ（１９）、及び
冷却水ポンプ（２９）が運転を停止してから吸収液ポン
プ時間（Ｔハが経過すると、制御装置り３２）が動作し
、吸収液ポンプ（１５）へ停止信号を出力し、吸収液ポ
ンプ（１５）が運転を停止する。Even after the load pump time (T, ) has elapsed, the absorption liquid pump (15) continues to operate, the absorption liquid circulates, and the absorption liquid concentration gradually decreases. Then, after the refrigerant pump (19) and the cooling water pump (29) stop operating, the absorption liquid pump time (when T has elapsed, the control device 32) operates and the absorption liquid pump (15) is stopped. A signal is output and the absorption liquid pump (15) stops operating.
以上のように稀釈運転が行われるが、運転停止信号が出
力された時の高温再生器温度が高く（例えばｘ ｓ ”
ｃ ）吸収液濃度が高いときには第３図に示したように
共通運転時間（Ｔり、及び吸収液ポンプ時間（Ｔ、）は
それぞれ長くなり、稀釈運転時間は長くなる。又、高温
再生器（１）の停止時の高温再生器温度が低く（例えば
Ｘ１°Ｃ）、吸収液濃度が低いときには、共通運転時間
（Ｔ、）、及び吸収液ポンプ時間（Ｔ、）はそれぞれ短
くなり、稀釈運転時間は短くなる。Dilution operation is performed as described above, but the high temperature regenerator temperature is high when the operation stop signal is output (for example, x s ”
c) When the absorption liquid concentration is high, as shown in Figure 3, the common operation time (T) and the absorption liquid pump time (T) become longer, and the dilution operation time becomes longer. When the high-temperature regenerator temperature at the time of shutdown in 1) is low (for example, Time becomes shorter.
上記本発明の実施例によれば、吸収冷凍機の運転停止時
、高温再生器温度に基づいて共通運転時間（ＴＩ）、及
び吸収液ポンプ時間（τ、）はそれぞれ変化し、高温再
生器温度が低く吸収液濃度が低いときには、共通運転時
間（’ｒｔ）、及び吸収液ポンプ時間（Ｔ、）は短くな
り、各ポンプ（１５） 、 （１９） 、 （２８）、
及び（２９）の高温再生器（１）の停止後、即ち稀釈運
転時の運転時間を短くすることができ、この結果、各ポ
ンプ（１５） 、 （１９） 、 （２ｇ）、及び（２
９）の無駄な運転を抑え、消費電力を低減することがで
きる。According to the above embodiment of the present invention, when the operation of the absorption chiller is stopped, the common operation time (TI) and the absorption liquid pump time (τ,) change based on the high temperature regenerator temperature, and the high temperature regenerator temperature When the absorption liquid concentration is low, the common operation time ('rt) and the absorption liquid pumping time (T, ) become short, and each pump (15), (19), (28),
After the high-temperature regenerator (1) of (1) and (29) is stopped, that is, the operation time during dilution operation can be shortened, and as a result, each pump (15), (19), (2g), and (2
9) It is possible to suppress wasteful operation and reduce power consumption.
又、高温再生器（１）の停止後の稀釈運転時、特に容量
が大きい負荷ポンプ（２８）、及び冷却水ポンプ（２９
）の運転時間を高温再生器温度が低いときには短くする
ことができ、この結果、各ポンプ（２８）、 （２９）
の消費電力を低減することができ、吸収冷凍機の運転コ
ストを低減することができる。Also, during dilution operation after stopping the high temperature regenerator (1), the load pump (28), which has a particularly large capacity, and the cooling water pump (29)
) can be shortened when the high temperature regenerator temperature is low, and as a result, each pump (28), (29)
The power consumption of the absorption refrigerator can be reduced, and the operating cost of the absorption chiller can be reduced.
更に、冷媒ポンプ（１９）の停止後負荷ポンプ（２８）
の運転を所定時間継続させるため、冷媒ポンプ（１９）
の停止後も、蒸発器（４〉の熱を冷水配管（２２）を流
れる冷水により外部へ取り出すことができ、蒸発器（４
）内の冷水配管（２２）の凍結を回避することができる
。Furthermore, after the refrigerant pump (19) is stopped, the load pump (28)
In order to continue operation for a predetermined period of time, the refrigerant pump (19)
Even after the evaporator (4) has stopped, the heat in the evaporator (4) can be extracted to the outside by the cold water flowing through the cold water pipe (22),
) freezing of the cold water pipe (22) can be avoided.
（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、運
転停止信号出力時の再生器の温度に基づいて稀釈運転時
間を制御するため、再生器の温度が低く稀釈運転が短く
て済む場合には、稀釈運転を短くすることができ、この
結果、稀釈運転に伴う、エネルギー消費を少なくし、運
転コストの低減を図ることができる。(G) Effects of the Invention The present invention is an absorption refrigerator configured as described above, and since the dilution operation time is controlled based on the temperature of the regenerator when the operation stop signal is output, the temperature of the regenerator is low and the dilution is performed. When a short operation is sufficient, the dilution operation can be shortened, and as a result, energy consumption associated with the dilution operation can be reduced, and operating costs can be reduced.
又、稀釈運転時の冷媒ポンプ、及び吸収液ポンプの運転
時間を運転停止信号出力時の高温再生器の温度に基づい
て制御することにより、高温再生器温度が低い場合には
冷媒ポンプ、及び吸収液ポンプの運転時間を短くし、無
駄な運転を抑えることができ、この結果、各ポンプの消
費電力を低減し、運転コストを低減することができる。In addition, by controlling the operation time of the refrigerant pump and absorption liquid pump during dilution operation based on the temperature of the high temperature regenerator when the operation stop signal is output, the refrigerant pump and absorption pump operation time is controlled when the high temperature regenerator temperature is low. The operating time of the liquid pump can be shortened and unnecessary operation can be suppressed. As a result, the power consumption of each pump can be reduced and the operating cost can be reduced.
更に、運転停止信号出力時の高温再生器温度に基づいて
稀釈運転時の冷却水ポンプ、及び負荷ポンプの運転時間
を制御することにより、高温再生器の温度が低く、稀釈
運転が短くて済む場合には、冷媒ポンプ等と比較して容
量が大きい冷却水ポンプ、及び負荷ポンプの運転時間を
短くすることができ、この結果、稀釈運転に伴う各ポン
プの消費電力を大幅に低減することができる。Furthermore, by controlling the operation time of the cooling water pump and load pump during dilution operation based on the high temperature regenerator temperature when the operation stop signal is output, it is possible to control the operation time of the cooling water pump and load pump during dilution operation, so that the temperature of the high temperature regenerator is low and the dilution operation can be shortened. The operating time of the cooling water pump, which has a large capacity compared to refrigerant pumps, etc., and the load pump can be shortened, and as a result, the power consumption of each pump associated with dilution operation can be significantly reduced. .
又、運転停止信号出力時の高温再生器の温度に基づいて
稀釈運転時の負荷ポンプ、及び冷媒ポンプの運転時間を
制御し、且つ、負荷ポンプの運転停止を冷媒ポンプの運
転停止から所定時間遅延させることにより、高温再生器
の温度が低く稀釈運転が短くて済む場合には、負荷ポン
プ及び冷媒ポンプの運転時間を短くすることができ、各
ポンプの消費電力を低減し、運転コストの低減を図るこ
とができ、更に、負荷ポンプを冷媒ポンプ停止後も運転
させ、冷水を循環させ、負荷配管の凍結を回避すること
ができる。In addition, the operation time of the load pump and refrigerant pump during dilution operation is controlled based on the temperature of the high temperature regenerator when the operation stop signal is output, and the operation stop of the load pump is delayed by a predetermined period from the operation stop of the refrigerant pump. By doing so, if the temperature of the high-temperature regenerator is low and the dilution operation can be shortened, the operating time of the load pump and refrigerant pump can be shortened, reducing the power consumption of each pump and reducing operating costs. In addition, the load pump can be operated even after the refrigerant pump has stopped, the cold water can be circulated, and freezing of the load piping can be avoided.
第１図は本発明の一実施例を示す吸収冷凍機の回路構成
図、第２図は上記吸収冷凍機の稀釈運転時の高温再生器
及び各ポンプの制御動作の説明図、第３図は高温再生器
温度と共通運転時間及び吸収液ポンプ運転継続時間との
関係図である。
（１）・・・高温再生器、 （３）・・・凝縮器、 （
４）・・・蒸発器、 （５）・・・吸収器、 （１５）
・・・吸収液ポンプ、（１９）・・・冷媒ポンプ、 （
２２）・・・負荷配管、 （２５）・・・冷却水配管、
（２８）・・・負荷ポンプ、 （２９）・・・冷却水
ポンプ。Fig. 1 is a circuit configuration diagram of an absorption refrigerator showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of the control operation of the high temperature regenerator and each pump during dilution operation of the absorption refrigerator, and Fig. 3 is FIG. 3 is a relationship diagram between high temperature regenerator temperature, common operation time, and absorption liquid pump operation continuation time. (1)...High temperature regenerator, (3)...Condenser, (
4)...Evaporator, (5)...Absorber, (15)
...absorption liquid pump, (19) ...refrigerant pump, (
22)...Load piping, (25)...Cooling water piping,
(28) Load pump, (29) Cooling water pump.
Claims (1)
管接続し、運転停止時には吸収液の稀釈運転を行う吸収
冷凍機において、吸収冷凍機の運転停止信号が与えられ
た時の再生器の温度に基づいて稀釈運転時間を制御する
ことを特徴とする吸収冷凍機。 ２、吸収器、高温再生器、凝縮器、及び蒸発器をそれぞ
れ配管接続し、蒸発器に冷媒ポンプを設け、吸収器と高
温再生器との間に吸収液ポンプを設け、運転停止時に高
温再生器の停止後冷媒ポンプ、及び吸収液ポンプを運転
させ、吸収液の稀釈運転を行う吸収冷凍機において、稀
釈運転時の冷媒ポンプ、及び吸収液ポンプの運転時間を
吸収冷凍機の運転停止信号が与えられた時の高温再生器
の温度に基づいて制御することを特徴とする吸収冷凍機
。 ３、吸収器、高温再生器、凝縮器、及び蒸発器をそれぞ
れ配管接続し、吸収器、及び凝縮器に冷却水配管を設け
、蒸発器に負荷配管を設け、冷却水配管、及び負荷配管
にそれぞれ冷却水ポンプ、及び負荷ポンプを設け、更に
、蒸発器に冷媒ポンプ、吸収器と高温再生器との間に吸
収液ポンプを設け、運転停止時に、高温再生器の停止後
、冷却水ポンプ、負荷ポンプ、冷媒ポンプ、及び吸収液
ポンプを運転させ、吸収液の稀釈運転を行う吸収冷凍機
において、吸収冷凍機の運転停止信号が与えられた時の
高温再生器の温度に基づいて稀釈運転時の冷却水ポンプ
、及び負荷ポンプの運転時間を制御することを特徴とす
る吸収冷凍機。 ４、吸収器、高温再生器、凝縮器、及び蒸発器をそれぞ
れ配管接続し、吸収器及び凝縮器に冷却水配管を設け、
蒸発器に負荷配管を設け、冷却水配管、及び負荷配管に
それぞれ冷却水ポンプ、及び負荷ポンプを設け、更に蒸
発器に冷媒ポンプ、吸収器と高温再生器との間に吸収液
ポンプを設け、運転停止時に、高温再生器の停止後、冷
却水ポンプ、負荷ポンプ、冷媒ポンプ、及び吸収液ポン
プを運転させ、吸収液の稀釈運転を行う吸収冷凍機にお
いて、吸収冷凍機の運転停止信号が与えられた時の高温
再生器の温度に基づいて稀釈運転時の負荷ポンプ、及び
冷媒ポンプの運転時間を制御し、且つ、負荷ポンプの運
転停止を冷媒ポンプの運転停止から所定時間遅延させる
ことを特徴とする吸収冷凍機。[Scope of Claims] 1. In an absorption refrigerating machine in which an absorber, a regenerator, a condenser, and an evaporator are each connected through piping, and the absorption liquid is diluted when the operation is stopped, an operation stop signal of the absorption refrigerating machine is given. An absorption refrigerator characterized in that the dilution operation time is controlled based on the temperature of the regenerator when the temperature is absorbed. 2. Connect the absorber, high-temperature regenerator, condenser, and evaporator with piping, install a refrigerant pump on the evaporator, and install an absorption liquid pump between the absorber and the high-temperature regenerator to perform high-temperature regeneration when the operation is stopped. In an absorption refrigerator, the refrigerant pump and absorption liquid pump are operated after the equipment is stopped to perform absorption liquid dilution operation.The operation time of the refrigerant pump and absorption liquid pump during dilution operation is An absorption refrigerator characterized in that control is performed based on the temperature of a high temperature regenerator at a given time. 3. Connect the absorber, high temperature regenerator, condenser, and evaporator with piping, respectively, install cooling water piping to the absorber and condenser, install load piping to the evaporator, and connect the cooling water piping and load piping to A cooling water pump and a load pump are provided respectively, and a refrigerant pump is provided in the evaporator, and an absorption liquid pump is provided between the absorber and the high-temperature regenerator, and when the operation is stopped, the cooling water pump, In an absorption chiller that operates the load pump, refrigerant pump, and absorption liquid pump to perform absorption liquid dilution operation, the dilution operation is performed based on the temperature of the high temperature regenerator when the absorption chiller operation stop signal is given. An absorption chiller characterized by controlling the operating time of a cooling water pump and a load pump. 4. Connect the absorber, high-temperature regenerator, condenser, and evaporator with piping, and provide cooling water piping to the absorber and condenser.
A load pipe is provided in the evaporator, a cooling water pump and a load pump are provided in the cooling water pipe and the load pipe, respectively, a refrigerant pump is provided in the evaporator, an absorption liquid pump is provided between the absorber and the high temperature regenerator, When the operation is stopped, after the high-temperature regenerator is stopped, the cooling water pump, load pump, refrigerant pump, and absorption liquid pump are operated, and an absorption chiller operation stop signal is given to the absorption chiller that performs absorption liquid dilution operation. The operating time of the load pump and refrigerant pump during dilution operation is controlled based on the temperature of the high temperature regenerator at the time of the change in temperature, and the operation stop of the load pump is delayed by a predetermined period from the stop of operation of the refrigerant pump. absorption refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1034289A JP2765913B2 (en) | 1989-02-14 | 1989-02-14 | Absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1034289A JP2765913B2 (en) | 1989-02-14 | 1989-02-14 | Absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02213659A true JPH02213659A (en) | 1990-08-24 |
| JP2765913B2 JP2765913B2 (en) | 1998-06-18 |
Family
ID=12409996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1034289A Expired - Lifetime JP2765913B2 (en) | 1989-02-14 | 1989-02-14 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2765913B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09229511A (en) * | 1996-02-20 | 1997-09-05 | Yazaki Corp | Control for dilution of absorption cold/hot water machine |
| JP2008116173A (en) * | 2006-11-07 | 2008-05-22 | Sanyo Electric Co Ltd | Absorption type refrigerating machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125363A (en) * | 1983-01-06 | 1984-07-19 | キヤリア・コ−ポレイシヨン | Absorption refrigerator and its operating method |
| JPS61101765A (en) * | 1984-10-24 | 1986-05-20 | 三洋電機株式会社 | Diluting operating device for absorption refrigerator |
| JPS62166272A (en) * | 1986-01-17 | 1987-07-22 | 株式会社荏原製作所 | Double-effect absorption refrigerator |
-
1989
- 1989-02-14 JP JP1034289A patent/JP2765913B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125363A (en) * | 1983-01-06 | 1984-07-19 | キヤリア・コ−ポレイシヨン | Absorption refrigerator and its operating method |
| JPS61101765A (en) * | 1984-10-24 | 1986-05-20 | 三洋電機株式会社 | Diluting operating device for absorption refrigerator |
| JPS62166272A (en) * | 1986-01-17 | 1987-07-22 | 株式会社荏原製作所 | Double-effect absorption refrigerator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09229511A (en) * | 1996-02-20 | 1997-09-05 | Yazaki Corp | Control for dilution of absorption cold/hot water machine |
| JP2008116173A (en) * | 2006-11-07 | 2008-05-22 | Sanyo Electric Co Ltd | Absorption type refrigerating machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2765913B2 (en) | 1998-06-18 |
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