JPH02251058A - Controller for refrigerator - Google Patents
Controller for refrigeratorInfo
- Publication number
- JPH02251058A JPH02251058A JP7140389A JP7140389A JPH02251058A JP H02251058 A JPH02251058 A JP H02251058A JP 7140389 A JP7140389 A JP 7140389A JP 7140389 A JP7140389 A JP 7140389A JP H02251058 A JPH02251058 A JP H02251058A
- Authority
- JP
- Japan
- Prior art keywords
- absorption liquid
- power
- absorption
- time
- concentration
- 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 claims abstract description 129
- 239000007788 liquid Substances 0.000 claims abstract description 106
- 239000006096 absorbing agent Substances 0.000 claims abstract description 16
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 abstract description 10
- 230000008014 freezing Effects 0.000 abstract description 7
- 238000007710 freezing Methods 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract 5
- 238000007865 diluting Methods 0.000 abstract 1
- 238000010790 dilution Methods 0.000 description 21
- 239000012895 dilution Substances 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 239000003507 refrigerant Substances 0.000 description 16
- 239000000498 cooling water Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 230000002362 anti-crystal effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 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
本発明は吸収冷凍機の制御装置に関し、特に停電発生時
の吸収冷凍機の運転を制御する吸収冷凍機の制御装置に
関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a control device for an absorption chiller, and more particularly to a control device for an absorption chiller that controls the operation of the absorption chiller when a power outage occurs.
（ロ）従来の技術
吸収冷凍機において、特開昭６０−７１８６６号公報、
又は、特開昭６０−７１８６７号公報に開示されている
ように、停止させる場合には、吸収液ポンプ等を運転し
、稀釈運転を行い、冷水の凍結や、吸収液の結晶防止を
図っていた。(b) Regarding conventional absorption refrigerators, Japanese Patent Application Laid-Open No. 60-71866,
Alternatively, as disclosed in Japanese Patent Application Laid-open No. 60-71867, when stopping, operate the absorption liquid pump etc. and perform dilution operation to prevent freezing of cold water and crystallization of absorption liquid. Ta.
（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、吸収冷凍機の運転中に停電が
発生した場合には、稀釈運転が行われないまま吸収冷凍
機が停止してしまい、機器の保護から好ましくない。又
、運転中に停電により吸収冷凍機が停止し、その後、復
電したとき、例えば運転スイッチの構造から、ノツチが
運転の位置にある場合には、運転が再開されるが二次側
の設備、例えばファンコイル、又はファンコイルへの冷
水循環用のポンプの状態がわからないまま、運転が行わ
れるものがあり、二次側が非通電の状態で吸収冷凍機の
運転が開始された場合には、運転が無駄になるという問
題が発生していた。(c) Problems to be Solved by the Invention In the above-mentioned conventional technology, if a power outage occurs while the absorption chiller is operating, the absorption chiller stops without dilution operation being performed, which protects the equipment. undesirable. In addition, when the absorption chiller stops due to a power outage during operation, and then the power is restored, for example, if the notch is in the operation position due to the structure of the operation switch, operation will be resumed, but the secondary side equipment For example, if the operation of an absorption refrigerator is started without knowing the status of the fan coil or the pump for circulating cold water to the fan coil, and the secondary side is not energized, There was a problem with wasted driving.
本発明は、停電が発生したときの吸収冷凍機での凍結、
結晶等の発生を防止し、又、復電時の吸収液循環系の無
駄な運転を防止することを目的とする。The present invention is capable of freezing in an absorption refrigerator when a power outage occurs,
The purpose is to prevent the generation of crystals, etc., and to prevent wasteful operation of the absorption liquid circulation system when power is restored.
（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、吸収器（５）、再
生器（１）、凝縮器（３）、蒸発器（４）等をそれぞれ
配管接続した吸収冷凍機において、停電後復電したとき
、吸収液の循環系のみを濃吸収液の濃度が所定濃度にな
るまで運転させる吸収冷凍機の制御装置を提供するもの
である。(d) Means for Solving the Problems In order to solve the above problems, the present invention connects an absorber (5), a regenerator (1), a condenser (3), an evaporator (4), etc. with piping. The present invention provides a control device for an absorption refrigerating machine that operates only an absorption liquid circulation system until the concentration of a concentrated absorption liquid reaches a predetermined concentration when power is restored after a power outage in the absorption refrigerating machine.
又、吸収器（５）、再生器（１）、凝縮器（３）、蒸発
器（４〉、及び吸収液ポンプ（１５）等をそれぞれ配管
接続した吸収冷凍機において、停電後復電したとき、濃
吸収液濃度を演算し、吸収液ポンプ（１５）の運転時間
を決定し、吸収液ポンプ（１５）のみを運転させる吸収
冷凍機の制御装置を提供するものである。Also, when power is restored after a power outage in an absorption chiller in which the absorber (5), regenerator (1), condenser (3), evaporator (4), absorption liquid pump (15), etc. are each connected via piping. , provides a control device for an absorption refrigerating machine that calculates the concentrated absorption liquid concentration, determines the operating time of the absorption liquid pump (15), and operates only the absorption liquid pump (15).
更に、吸収器（５）、再生器（１）、凝縮器（３）、及
び蒸発器（４）等をそれぞれ配管接続した吸収冷凍機に
おいて、停電後復電したとさ、再生器り２）等の吸収液
の循環系の温度に基づいて吸収液の循環系の運転時間を
決定するようにした吸収冷凍機の制御装置を提供するも
のである。Furthermore, when power is restored after a power outage in an absorption refrigerator in which the absorber (5), regenerator (1), condenser (3), evaporator (4), etc. are each connected via piping, the regenerator (2) The present invention provides a control device for an absorption refrigerator that determines the operating time of an absorption liquid circulation system based on the temperature of the absorption liquid circulation system.
（ホ）作用
停電後復電したとき、濃吸収液の濃度が所定濃度になる
まで吸収液の循環系が運転され、吸収液の稀釈運転が行
われ、吸収液濃度が低下するため、吸収液の循環系での
結晶の発生を防止することが可能になる。(E) Function When the power is restored after a power outage, the absorption liquid circulation system is operated until the concentration of the concentrated absorption liquid reaches a predetermined concentration, and the absorption liquid is diluted, and the concentration of the absorption liquid decreases. This makes it possible to prevent the formation of crystals in the circulatory system.
又、停電発生後復電したとき、演算して出された濃液濃
度に基づいて吸収液ポンプ（１５）の運転時間が決定さ
れ、この運転時間吸収液ポンプ（１５）のみが運転され
、吸収液が吸収液の循環系を循環し、吸収液の濃度が低
下し、吸収液の循環系での結晶発生を防止することが可
能番となる。In addition, when power is restored after a power outage occurs, the operation time of the absorption liquid pump (15) is determined based on the calculated concentrated liquid concentration, and only the absorption liquid pump (15) is operated during this operation time, and the absorption As the liquid circulates through the absorption liquid circulation system, the concentration of the absorption liquid decreases, making it possible to prevent crystal formation in the absorption liquid circulation system.
更に、停電発生後復電したとき、再生器（１）等の吸収
液循環系の温度に基づいて所定時間吸収液の循環系のみ
が運転され、稀釈運転が行われ吸収液の循環系での結晶
発生を防止することが可能になり、又、吸収液循環系の
温度が低いときには、循環系の運転時間が短くなり、循
環系の消費電力を低減することが可能になる。Furthermore, when the power is restored after a power outage occurs, only the absorption liquid circulation system is operated for a predetermined time based on the temperature of the absorption liquid circulation system such as the regenerator (1), and dilution operation is performed. It becomes possible to prevent the generation of crystals, and when the temperature of the absorption liquid circulation system is low, the operation time of the circulation system is shortened, and the power consumption of the circulation system can be reduced.
（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
る。(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（Ｈ，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 double-effect absorption refrigerator, in which the refrigerant is water (H, 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、り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、（２４）は冷水ポン
プであり、それぞれは第１図に示したように配管接続さ
れている。又、（２５）は冷却水配管であり、この冷却
水配管（２５）の途中には吸収器熱交換器（２６）、凝
縮器熱交換器（２７）、及び冷却水ポンプ（２９〉が設
けられている。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 the refrigerant pipe, <19) is the refrigerant pump, (20) is the gas pipe connected to the gas burner (IB>), (21) is the heating amount control valve, (22) is the cold water pipe, and (24) is the cold water pump. Each of them is connected to the piping as shown in Fig. 1. Also, (25) is a cooling water piping, and an absorber heat exchanger (26) is installed in the middle of this cooling water piping (25). , a condenser heat exchanger (27), and a cooling water pump (29>).
（３０）は吸収冷凍機の制御盤であり、（３１）は制御
盤に設けられたマイコン演算装置、（Ｓ）は運転スイッ
チである。そして、マイコン演算装置（３１）には、停
電、及び復電を検知して動作する停電検知器（３２〉、
停電発生時に停電状態を記憶するメモリ（３３）と、停
電発生時の停電時間をカウントするタイマ（３４）と、
停電検出器（３２）からの信号に基づいて動作し、メモ
リ（３３〉、及びタイマ（３４）へ信号を出力する中央
演算装置（以下ＣＰＵという） （３５）と、インター
フェース（３６）と、バックアップ電源（３７）等が設
けられている。(30) is a control panel of the absorption refrigerator, (31) is a microcomputer arithmetic unit provided on the control panel, and (S) is an operation switch. The microcomputer arithmetic unit (31) includes a power outage detector (32) that operates by detecting a power outage and power restoration.
A memory (33) that stores the power outage status when a power outage occurs, and a timer (34) that counts the power outage time when a power outage occurs.
A central processing unit (hereinafter referred to as CPU) (35) that operates based on a signal from a power outage detector (32) and outputs a signal to a memory (33) and a timer (34), an interface (36), and a backup A power source (37) and the like are provided.
（４０）は低温再生器（２）出口側の吸収液配管（１１
）に設けられ、濃吸収液（以下濃液という）の温度を検
出する濃液温度検出器、（４１）は凝縮器（３）出口側
の冷媒配管（１７）に設けられ、凝縮温度を検出する凝
縮温度検出器である。これら温度検出器（４０） 、
（４１＞は制御盤（３０）に接続されており、各検出温
度に基づいて濃液濃度がマイコン演算装置（３１）にて
演算される。(40) is the absorption liquid pipe (11) on the outlet side of the low temperature regenerator (2).
) is installed in the refrigerant pipe (17) on the outlet side of the condenser (3) and detects the condensation temperature. This is a condensing temperature detector. These temperature detectors (40),
(41>) is connected to a control panel (30), and the concentration of the concentrated liquid is calculated by a microcomputer calculation device (31) based on each detected temperature.
上記、吸収冷凍機の運転時、従来の吸収冷凍機と同様に
高温再生器（１）で蒸発した冷媒は低温再生器（２）を
経て凝縮器（３）へ流れ、凝縮器熱交換器（２７）を流
れる水と熱交換して凝縮液化した後、冷媒配管（１７）
を介して蒸発器（４）へ流れる。そして、冷媒液が冷水
配管（２２）内の水と熱交換して蒸発し、気化熱によっ
て冷水配管（２２）内の水が冷却される。そして、冷水
が負荷に循環して冷房運転が行われる。また、蒸発器（
４）で蒸発した冷媒は吸収器（５）で吸収液に吸収され
る。そして、冷媒を吸収して濃度の薄くなった吸収液が
吸収液ポンプ（１５）の運転により低温熱交換器（６）
、高温熱交換器（７〉を経て高温再生器（１〉へ送られ
る。高温再生器（１）に入った吸収液はバーナ（ＩＢ）
によって加熱され、冷媒が蒸発し、中濃度の吸収液が高
温熱交換器（７）を経て低温再生器（２）に入る。そし
て、吸収液は高温再生器（１）から冷媒配管（１６）を
流れて来た冷媒蒸気により加熱され、さらに冷媒が蒸発
分離され濃度が高くなる。高濃度になった吸収液（以下
濃液という）は低温熱交換器（６）を経て、温度低下し
て吸収器（５）へ送られ、散布される。When the above-mentioned absorption chiller is in operation, the refrigerant evaporated in the high temperature regenerator (1) flows through the low temperature regenerator (2) to the condenser (3), similar to the conventional absorption chiller, and flows into the condenser heat exchanger ( After exchanging heat with the water flowing through the refrigerant pipe (17) and condensing and liquefying it, the refrigerant pipe (17)
to the evaporator (4). Then, the refrigerant liquid exchanges heat with the water in the cold water pipe (22) and evaporates, and the water in the cold water pipe (22) is cooled by the heat of vaporization. Then, the cold water is circulated to the load to perform cooling operation. In addition, the evaporator (
The refrigerant evaporated in step 4) is absorbed into an absorption liquid in an absorber (5). The absorption liquid, which has absorbed the refrigerant and has a reduced concentration, is transferred to the low-temperature heat exchanger (6) by the operation of the absorption liquid pump (15).
, and is sent to the high-temperature regenerator (1) via the high-temperature heat exchanger (7). The absorption liquid that has entered the high-temperature regenerator (1) is sent to the burner (IB).
The refrigerant is evaporated and the medium concentration absorption liquid passes through the high temperature heat exchanger (7) and enters the low temperature regenerator (2). Then, the absorption liquid is heated by the refrigerant vapor flowing through the refrigerant pipe (16) from the high-temperature regenerator (1), and the refrigerant is further evaporated and separated, increasing its concentration. The highly concentrated absorption liquid (hereinafter referred to as concentrated liquid) passes through a low-temperature heat exchanger (6), has a reduced temperature, is sent to an absorber (5), and is sprayed.
上記のように吸収冷凍機が運転されているとき、停電が
発生した場合には、吸収液ポンプく１５）、冷媒ポンプ
（１９）、が非通電になる。又、停電検出装置（３２）
が停電を検出し冷水ポンプ（２４）、及び冷却水ボンブ
ク２９）が非通電になり、停止する。If a power outage occurs while the absorption refrigerator is being operated as described above, the absorption liquid pump 15) and the refrigerant pump (19) will be de-energized. Also, power outage detection device (32)
detects a power outage, the cold water pump (24) and the cooling water bomb 29) become de-energized and stop.
又、加熱量制御弁（２１）が閉じ高温再生器（１）のガ
スバーナ〈ＩＢ）が燃焼を停止し、吸収冷凍機の運転が
停止する。又、停電発生を停電検知器（３２）が検知し
てＣＰＵ（３！５＞へ停電信号出力する。そして、停電
信号を入力したＣＰＵ（３５）は動作し、メモリ（３３
）、及びタイマ（３４）へ信号を出力し、メモリ（３３
）に停電が発生したこと、即ち停電発生状態が記憶され
、タイマ（３４）は停電時間のカウントを開始する。そ
の後、メモリ（３３）、タイマ（３４）、及びＣＰＵ（
３５）にはバックアップ電源（３７）から電力が供給さ
れる。Further, the heating amount control valve (21) is closed, the gas burner (IB) of the high temperature regenerator (1) stops combustion, and the operation of the absorption refrigerator is stopped. In addition, the power outage detector (32) detects the occurrence of a power outage and outputs a power outage signal to the CPU (3!5>.Then, the CPU (35) that inputs the power outage signal operates, and the memory (33)
) and timer (34), and outputs a signal to the memory (33).
), that is, the power outage occurrence state is stored, and the timer (34) starts counting the power outage time. After that, the memory (33), timer (34), and CPU (
35) is supplied with power from a backup power source (37).
停電が発生してから時間が経過し、タイマ（３４）に設
定された所定時間（例えば２時間）が経過する前に時刻
（Ｔ、）にて復電した場合には、復電を停電検知器（３
２）が検知し、復電信号をＣＰＵ（３５−）へ出力する
。そして、ＣＰ Ｕ（３！ｉ＞が動作してメモリ（３３
）の情報を確認し、吸収液ポンプ（１５）の運転信号を
出力し、運転信号が制御盤（３０）から吸収液ポンプ（
１５）へ出力され、吸収液ポンプ（１５）の運転が開始
される。このとき、吸収液ポンプけ５）以外のポンプは
運転を開始しない。又、ＣＰ Ｕ（３５）からタイマ（
３４）へ信号が出力され、タイマ（３４）の停電時間が
リセットされる。又、各温度検出器（４１） 。If time has passed since the power outage occurred and the power is restored at time (T,) before the predetermined time (for example, 2 hours) set in the timer (34) has elapsed, the power restoration is detected as a power outage. Vessel (3
2) detects and outputs a power restoration signal to the CPU (35-). Then, the CPU (3!i> operates and the memory (33!
) and outputs the operation signal for the absorption liquid pump (15), and the operation signal is sent from the control panel (30) to the absorption liquid pump (
15), and the operation of the absorption liquid pump (15) is started. At this time, pumps other than the absorption liquid pump 5) do not start operating. In addition, the timer (
34), and the power outage time of the timer (34) is reset. Also, each temperature detector (41).
（４０）からの信号に基づいてマイコン演算装置（３１
）が動作し濃液の濃度が演算される。(40) based on the signal from the microcomputer arithmetic unit (31).
) is operated and the concentration of the concentrated liquid is calculated.
吸収液ポンプ（１５）が運転を開始すると、稀吸収液が
吸収器（５）から吸収液管（８）を介して高温再生器け
）へ送られ、更に、吸収液が吸収液配管（９）。When the absorption liquid pump (15) starts operating, the diluted absorption liquid is sent from the absorber (5) to the high temperature regenerator via the absorption liquid pipe (8), and then the absorption liquid is sent to the absorption liquid pipe (9). ).
（１０） 、 ｍ） 、 ＜１２）、及び高温熱交換器
（７）、低温熱交換器（６〉に循環し、稀釈運転が行わ
れる。この稀釈運転により吸収液の濃度が低下し、マイ
コン演算装置（３１）が各温度検出器（４０） 、 （
４１）の検出温度から演算する濃液濃度が所定濃度にな
ると、マイコン演算装置（３１）が動作し、吸収液ポン
プ（１５）の停止信号を出力する。そして、吸収液ポン
プ（１５）が停止し、復電時の稀釈運転が終わる。又、
ＣＰＵ（３ｇ）からメモリ（３３）へクリア信号が出力
され、停電発生状態の記憶がクリアされる。そして、吸
収冷凍機は制御盤（３０）の運転スイッチ（Ｓ）の操作
による起動信号を時期する時期状態になる。(10), m), <12), high-temperature heat exchanger (7), and low-temperature heat exchanger (6>), and a dilution operation is performed.This dilution operation lowers the concentration of the absorption liquid, and the microcomputer The arithmetic unit (31) connects each temperature detector (40), (
When the concentrated liquid concentration calculated from the detected temperature in step 41) reaches a predetermined concentration, the microcomputer calculation device (31) operates and outputs a stop signal for the absorption liquid pump (15). Then, the absorption liquid pump (15) stops, and the dilution operation upon power restoration ends. or,
A clear signal is output from the CPU (3g) to the memory (33), and the memory of the power failure occurrence state is cleared. Then, the absorption refrigerating machine enters a state in which a start signal is issued by operating the operation switch (S) on the control panel (30).
その後、吸収冷凍機の管理者が制御盤（３０）に設けら
れた運転スイッチ（Ｓ）を操作すると、運転スイッチ（
Ｓ）からの信号に基づいて制御盤（３０）から吸収液ポ
ンプ（１５）、冷媒ポンプ（１９）、冷水ポンプ（２４
）、及び冷却水ポンプ（２９）へ運転信号が出力され、
又加熱量制御弁（２１）へ開信号が出力され、各ポンプ
（１５） 、 （１９） 、 （２４） 、 （２９）
、及び高温再生器（１）が運転を開始し、吸収冷凍機が
運転を始める。そして、管理者が運転スイッチ（Ｓ）を
操作し、吸収冷凍機を停止させたときには、高温再生器
（１）の停止後、第３図に示したように各ポンプ（１５
＞ 、 （１９） 、 ＜２４＞ 、 （２９）が所定
時間ずつ運転され稀釈運転が行われる。After that, when the administrator of the absorption chiller operates the operation switch (S) provided on the control panel (30), the operation switch (
Based on the signal from S), the control panel (30) operates the absorption liquid pump (15), refrigerant pump (19), and chilled water pump (24).
), and an operation signal is output to the cooling water pump (29),
Also, an open signal is output to the heating amount control valve (21), and each pump (15), (19), (24), (29)
, and the high temperature regenerator (1) start operating, and the absorption refrigerator starts operating. Then, when the administrator operates the operation switch (S) to stop the absorption chiller, after the high temperature regenerator (1) is stopped, each pump (15
>, (19), <24>, and (29) are operated for a predetermined period of time to perform a dilution operation.
又、上記のように停電が発生し、その後、停電状態が所
定時間継続し、タイマ（３４）がカウントアツプしたと
きに、復電していない場合には、タイマ（３４）からＣ
ＰＵ（３５）へ信号が出力される。そして、その後、復
電し停電検知器（３２）から復電信号が出力された場合
には、吸収液ポンプ（１５）の運転信号がＣＰＵ（３５
）から出力されない。このため、吸収液ポンプ（１５）
は運転を開始せず稀釈運転は行われない。In addition, when a power outage occurs as described above and the power outage continues for a predetermined period of time and the timer (34) counts up, if the power has not been restored, the timer (34)
A signal is output to the PU (35). Then, when the power is restored and a power restoration signal is output from the power outage detector (32), the operation signal of the absorption liquid pump (15) is transmitted to the CPU (35).
) is not output. For this reason, the absorption liquid pump (15)
does not start operation and dilution operation is not performed.
上記実施例によれば、吸収冷凍機の運転中に停電が発生
した場合には、メモリ（３３）に停電発生状態が記憶さ
れると共に、タイマ（Ｉ）がカウントを開始し、停電が
発生してタイマ（３４）がカウントアツプする前、即ち
、停電が発生してから所定時間が経過する前に復電した
ときには、濃液の濃度が低下するまで吸収液ポンプ（１
５）のみが運転され、吸収液が高温再生器（１）、高温
熱交換器（７）、低温再生器（２）、及び低温熱交換器
（６）に循環し、稀釈運転が行われるため、濃液が流れ
る吸収液配管（ｕ） 、 （１２）、及び低温熱交換器
り６）にて結晶が発生することを防止できる。又、高温
再生器（１）の温度が高い吸収液を高温再生器（１）か
ら高温熱交換器（７）、低温再生器（２）、低温熱交換
器（６）を介して吸収器（５）へ送り、吸収器（５）、
及び蒸発器（４）の温度を」１昇させることかでさ、冷
水の凍結を防止することができる。According to the above embodiment, when a power outage occurs while the absorption chiller is operating, the power outage occurrence state is stored in the memory (33), and the timer (I) starts counting, so that the power outage does not occur. If the power is restored before the timer (34) counts up, that is, before a predetermined period of time has elapsed after a power outage, the absorption liquid pump (1
5) is operated, and the absorption liquid is circulated to the high temperature regenerator (1), high temperature heat exchanger (7), low temperature regenerator (2), and low temperature heat exchanger (6), and dilution operation is performed. It is possible to prevent crystals from forming in the absorption liquid pipes (u) and (12) through which the concentrated liquid flows, and the low temperature heat exchanger 6). In addition, the absorption liquid having a high temperature in the high-temperature regenerator (1) is transferred from the high-temperature regenerator (1) to the absorber ( 5), absorber (5),
By raising the temperature of the evaporator (4) by 1, it is possible to prevent the cold water from freezing.
又、停電発生時から所定時間内に復電しないときには、
タイマ（３４）が動作してＣＰＵ（３５）へ信すを出力
し、その後、復電して停電検出器（３２）からＣＰＵ（
３５）へ信号が出力された場合には、ＣＰＵ（３５）か
ら吸収液ポンプ（１５）の運転信号が出力されず、吸収
液ポンプ（１５）は運転を開始しないため、停電発生時
から所定時間経過し、高温再生器（１）、各吸収液配管
（８）〜（１２）、及び各熱交換器（６）。In addition, if power is not restored within a specified time after a power outage occurs,
The timer (34) operates and outputs a signal to the CPU (35), after which the power is restored and the power failure detector (32) outputs a signal to the CPU (35).
35), the operation signal for the absorption liquid pump (15) is not output from the CPU (35), and the absorption liquid pump (15) does not start operation, so it will not start operating for a predetermined period of time after the power outage occurs. and a high temperature regenerator (1), each absorption liquid pipe (8) to (12), and each heat exchanger (6).
（７）の温度が冷え、稀釈運転による結晶防止等の効果
が小さくなってから吸収液ポンプ（１５〉の運転が行わ
れることを防止でき、この結果、吸収液ポンプ（１５）
による消費電力を削減することができる。It is possible to prevent the absorption liquid pump (15>) from being operated after the temperature of the absorption liquid pump (15) has cooled down and the effect of crystallization prevention etc. due to dilution operation has become smaller.As a result, the absorption liquid pump (15)
It is possible to reduce power consumption due to
更に、停電が発生し、復電後の稀釈運転が終わってから
は各ポンプ（１５）、 ＜１９＞、 （２４）、 （２
９）等は運転されず、運転スイッチ（Ｓ）が操作される
まで吸収冷凍機が時期状態であるため、稀釈運転終了後
、二次側の設置の状態に関係なく吸収冷凍機が運転を開
始することを防止でき、吸収冷凍機側の冷水ポンプ（２
４）等の支障を防止することができる。Furthermore, after a power outage occurred and the dilution operation ended after the power was restored, each pump (15), <19>, (24), (2
9) etc. are not operated, and the absorption chiller is in the temporary state until the operation switch (S) is operated, so after the dilution operation is completed, the absorption chiller starts operating regardless of the installation status on the secondary side. The cold water pump (2) on the absorption chiller side
4) etc. can be prevented.
又、復電時、マイコン演算装置（３１）で演算された濃
液濃度に基づいて復電時の吸収液ポンプ（１５）の運転
時間を決定し、例えは濃液濃度に比例して吸収液ポンプ
（１５）の運転時間を長くした場合にも同様の作用効果
を得ることが出来る。In addition, when the power is restored, the operation time of the absorption liquid pump (15) is determined based on the concentrated liquid concentration calculated by the microcomputer calculation unit (31), and for example, the operation time of the absorption liquid pump (15) is determined in proportion to the concentrated liquid concentration. Similar effects can be obtained when the pump (15) is operated for a longer period of time.
又、第１図に示したように高温再生器（２）に温度検出
器（４３）を設け、この温度検出器（４３）を制御盤（
３０）に接続する。そして、停電発生後に復電したとき
高温再生器（２）の温度を温度検出器（４３）により検
出し、検出温度が高い場合には上記実施例と同様に、所
定時間（例えば最大で１０分）稀釈運転が行われる。こ
のため、上記実施例と同様に低温熱交換器（６）等にて
結晶が発生ずることを防止できる。又、停電発生後時間
が経過して吸収液の循環系の温度が低下してから復電し
、復電したときに温度検出器（４３〉の検出温度が所定
温度以下の場合には、稀釈運転が短い時間（例えは２分
）行われる。このため、吸収液の循環系の温度が低下し
、復電時の稀釈運転による結晶防止効果が低下したとき
に吸収液ポンプ（１５）の運転が長い時間待われること
を防止でき、この結果、吸収液ポンプ（１５〉の消費電
力を低減することができる。In addition, as shown in Figure 1, a temperature detector (43) is provided in the high temperature regenerator (2), and this temperature detector (43) is connected to the control panel (
30). Then, when the power is restored after a power outage occurs, the temperature of the high temperature regenerator (2) is detected by the temperature detector (43), and if the detected temperature is high, the temperature of the high temperature regenerator (2) is detected for a predetermined period of time (for example, 10 minutes at most) as in the above embodiment. ) A dilution operation is performed. Therefore, as in the above embodiment, it is possible to prevent crystals from forming in the low temperature heat exchanger (6) and the like. In addition, when the power is restored after the temperature of the absorption liquid circulation system has decreased as time passes after the power outage occurs, and the temperature detected by the temperature detector (43) is below the predetermined temperature when the power is restored, the dilution The operation is performed for a short period of time (for example, 2 minutes).As a result, the absorption liquid pump (15) is operated only when the temperature of the absorption liquid circulation system decreases and the anti-crystal effect of the dilution operation upon power restoration is reduced. can be prevented from waiting for a long time, and as a result, the power consumption of the absorption liquid pump (15) can be reduced.
尚、第１図に示したように例えば吸収液配管（１２〉に
温度検出器（４４〉を設け、復電時の温度検出器り４４
〉の検出温度に基づいて吸収液ポンプ（１５）の運転時
間を制御しても同様の作用効果を得ることができる。In addition, as shown in FIG. 1, for example, a temperature detector (44) is installed in the absorption liquid pipe (12), and the temperature detector (44) is installed at the time of power restoration.
Similar effects can be obtained by controlling the operating time of the absorption liquid pump (15) based on the detected temperature.
（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の制御装置
であり、停電後復電したとき、吸収液の循環系のみを濃
液の濃度が所定濃度になるまで運転させるようにしたた
め、復電時、濃液の濃度が低下して所定濃度になるまで
吸収液を吸収器、再生器、及び吸収液配管に循環させ、
稀釈運転を行うことができ、この結果、冷水の凍結、及
び結晶の発生等を防止することができる。(G) Effects of the Invention The present invention is a control device for an absorption refrigerator configured as described above, and when power is restored after a power outage, only the absorption liquid circulation system is operated until the concentration of the concentrated liquid reaches a predetermined concentration. Therefore, when the power is restored, the absorption liquid is circulated through the absorber, regenerator, and absorption liquid piping until the concentration of the concentrated liquid decreases to a predetermined concentration.
Dilution operation can be performed, and as a result, freezing of cold water, generation of crystals, etc. can be prevented.
又、停電後、復電したとき、濃液濃度を演算し、濃液濃
度に基づいて吸収液ポンプの運転時間を決定し、吸収液
ポンプのみを運転させることにより、復電時の濃液濃度
に基づいて稀釈運転を行うことができ、冷水の凍結、及
び結晶の発生等を防止でき、又、復電時の濃液濃度が低
い場合には、吸収液ポンプの運転時間が短くなり、無駄
に稀釈運転が行われることを防止できる。In addition, when power is restored after a power outage, the concentrated liquid concentration is calculated, the operation time of the absorption liquid pump is determined based on the concentrated liquid concentration, and only the absorption liquid pump is operated, so that the concentration of concentrated liquid at the time of power restoration is calculated. It is possible to perform dilution operation based on the conditions, preventing freezing of cold water and generation of crystals, etc. Also, if the concentration of concentrated liquid is low at the time of power restoration, the operating time of the absorption liquid pump will be shortened, reducing waste. This can prevent dilution operation from occurring.
更に、停電発生後復電したとき、再生器等の吸収液の循
環系の温度に基づいて吸収液の循環系の運転時間を決定
することにより、復電時循環系の温度が高いときには循
環系を運転させ稀釈運転を行い、冷水の凍結、及び結晶
の発生を防止することができ、又、復電時循環系の温度
が低いときには、無駄な稀釈運転が行われることを防止
でき、運転コストの低減を図ることができる。Furthermore, when the power is restored after a power outage, the operation time of the absorption liquid circulation system is determined based on the temperature of the circulation system of the absorption liquid such as a regenerator. It is possible to prevent freezing of cold water and the generation of crystals by running dilution operation. Also, when the temperature of the circulation system is low at the time of power restoration, unnecessary dilution operation can be prevented, reducing operating costs. It is possible to reduce the
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図は停電発生時の制御動作の説明図、第３図は
通常の稀釈運転時の制御動作の説明図である。
（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。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 control operations when a power outage occurs, and Fig. 3 is an explanatory diagram of control operations during normal dilution operation. be. (1)...High temperature regenerator, (3)...Condenser, (
4)...Evaporator, (5)...Absorber, (15)
...Absorption liquid pump.
Claims (1)
配管接続した吸収冷凍機において、停電後復電したとき
、吸収液の循環系のみを濃吸収液の濃度が所定濃度にな
るまで運転させるようにしたことを特徴とする吸収冷凍
機の制御装置。 ２、吸収器、再生器、凝縮器、蒸発器、及び吸収液ポン
プ等をそれぞれ配管接続した吸収冷凍機において、停電
後復電したとき、濃吸収液の濃度を演算し、吸収液ポン
プの運転時間を決定し、吸収液ポンプのみを運転させる
ことを特徴とする吸収冷凍機の制御装置。 ３、吸収器、再生器、凝縮器、蒸発器等をそれぞれ配管
接続した吸収冷凍機において、停電後復電したとき再生
器等の吸収液の循環系の温度に基づいて吸収液の循環系
の運転時間を決定するようにしたことを特徴とする吸収
冷凍機の制御装置。[Claims] 1. In an absorption refrigerator in which an absorber, a regenerator, a condenser, an evaporator, etc. are each connected through piping, when power is restored after a power outage, only the circulation system of the absorbent is changed to the concentration of the concentrated absorbent. 1. A control device for an absorption refrigerator, characterized in that the absorption refrigerator is operated until a predetermined concentration is reached. 2. When the power is restored after a power outage in an absorption chiller in which the absorber, regenerator, condenser, evaporator, and absorption liquid pump are each connected via piping, the concentration of the concentrated absorption liquid is calculated and the absorption liquid pump is operated. A control device for an absorption refrigerator, which determines the time and operates only the absorption liquid pump. 3. In an absorption refrigerator in which an absorber, a regenerator, a condenser, an evaporator, etc. are each connected via piping, when the power is restored after a power outage, the absorption liquid circulation system is adjusted based on the temperature of the absorption liquid circulation system such as the regenerator. A control device for an absorption chiller, characterized in that the operating time is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7140389A JP2752139B2 (en) | 1989-03-23 | 1989-03-23 | Control device for absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7140389A JP2752139B2 (en) | 1989-03-23 | 1989-03-23 | Control device for absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02251058A true JPH02251058A (en) | 1990-10-08 |
| JP2752139B2 JP2752139B2 (en) | 1998-05-18 |
Family
ID=13459515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7140389A Expired - Lifetime JP2752139B2 (en) | 1989-03-23 | 1989-03-23 | Control device for absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2752139B2 (en) |
-
1989
- 1989-03-23 JP JP7140389A patent/JP2752139B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2752139B2 (en) | 1998-05-18 |
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