JP2000220906A - Control of absorption refrigerating machine - Google Patents
Control of absorption refrigerating machineInfo
- Publication number
- JP2000220906A JP2000220906A JP11022177A JP2217799A JP2000220906A JP 2000220906 A JP2000220906 A JP 2000220906A JP 11022177 A JP11022177 A JP 11022177A JP 2217799 A JP2217799 A JP 2217799A JP 2000220906 A JP2000220906 A JP 2000220906A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- evaporator
- temperature
- pump
- started
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、吸収冷凍機の起動
時の制御方法に係わるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method for starting an absorption refrigerator.
【０００２】[0002]
【従来の技術】吸収冷凍機においては、再生器で溶液を
加熱して生成した冷媒蒸気を凝縮器に送り、この凝縮器
で冷却水によって冷却して得た冷媒液を蒸発器に送って
蒸発させ、蒸発器の内部に配管した伝熱管を流れている
流体を冷媒の蒸発熱によって冷却し、この冷却した流体
を被冷却部に供給して冷房などの冷却運転が行われる。2. Description of the Related Art In an absorption refrigerator, a refrigerant vapor generated by heating a solution in a regenerator is sent to a condenser, and a refrigerant liquid obtained by cooling with cooling water in the condenser is sent to an evaporator to evaporate. Then, the fluid flowing through the heat transfer pipe provided inside the evaporator is cooled by the heat of evaporation of the refrigerant, and the cooled fluid is supplied to the portion to be cooled to perform a cooling operation such as cooling.
【０００３】そして、蒸発器の内部に設置した伝熱管に
通して冷却する流体が廉価で、漏れても危険のない水で
あるときには、この冷却した水を被冷却部に供給する冷
水ポンプの運転が停止された状態で、冷媒液溜りに溜ま
った冷媒液を冷媒ポンプを運転して伝熱管に散布する
と、伝熱管内にある水が凍ってしまうので、冷水系統の
凍結防止を図るために冷水ポンプの運転が最初から行わ
れるようになっている。When the fluid to be cooled through the heat transfer tube installed inside the evaporator is inexpensive and has no danger even if it leaks, an operation of a chilled water pump for supplying the cooled water to the portion to be cooled is performed. When the coolant is stopped and the refrigerant liquid accumulated in the refrigerant liquid reservoir is sprayed on the heat transfer tubes by operating the refrigerant pump, the water in the heat transfer tubes freezes. The operation of the pump is performed from the beginning.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記従来の吸
収冷凍機においては、冷凍能力がない当初から冷水ポン
プの運転が行われて温度の高い水が系内に行き渡り、装
置全体の温度が上昇するので、冷房運転を速やかに開始
することができないと云った問題点があり、この解決が
課題となっていた。However, in the above-mentioned conventional absorption chiller, the chilled water pump is operated from the beginning of lack of refrigeration capacity, and high-temperature water is distributed throughout the system, and the temperature of the entire apparatus rises. Therefore, there is a problem that the cooling operation cannot be started immediately, and this problem has been solved.
【０００５】[0005]
【課題を解決するための手段】本発明は上記従来技術の
課題を解決するための具体的手段として、再生器・凝縮
器・吸収器などと冷凍サイクルを構成する蒸発器の内部
に配管した伝熱管内部で冷媒に蒸発熱を奪われて冷却さ
れた流体を被冷却部に供給して冷却作用を行う吸収冷凍
機の起動時に、再生器における吸収液の加熱と、吸収器
および凝縮器への冷却水の供給を先行して開始し、次に
蒸発器および／または吸収器の内部圧力、凝縮器から供
給されて蒸発器でフラッシングしている冷媒の温度、再
生器から吸収器に供給されている吸収液の温度、の少な
くとも何れかに基づいて、前記流体を被冷却部に供給す
るポンプの運転を開始し、そのご凝縮器から供給されて
冷媒液溜りに溜まった冷媒液を前記伝熱管に散布するた
めの冷媒ポンプの運転を開始するようにした第１の制御
方法と、According to the present invention, as a specific means for solving the above-mentioned problems of the prior art, a transmission pipe arranged inside an evaporator constituting a refrigeration cycle with a regenerator / condenser / absorber and the like. At the start of the absorption refrigerator, which cools by supplying the cooled fluid, which is deprived of the heat of evaporation by the refrigerant inside the heat pipe, to the part to be cooled, the heating of the absorbing liquid in the regenerator and the cooling of the absorber and condenser are started. The cooling water supply starts first, then the internal pressure of the evaporator and / or absorber, the temperature of the refrigerant supplied from the condenser and flushing in the evaporator, the regenerator to the absorber. The operation of the pump for supplying the fluid to the portion to be cooled is started based on at least one of the temperature of the absorbing liquid and the refrigerant liquid supplied from the condenser and accumulated in the refrigerant liquid reservoir is transferred to the heat transfer tube. Of a refrigerant pump for spraying on A first control method so as to start the rolling,
【０００６】前記第１の構成の制御方法において、前記
流体を被冷却部に供給するポンプの運転を開始したとき
に、蒸発器および／または吸収器の内部が設定値を超え
る圧力低下を示すか、凝縮器から供給されて蒸発器でフ
ラッシングしている冷媒が設定値を超える温度低下を示
すか、再生器から吸収器に供給されている吸収液が設定
値を超える温度上昇を示すときには、冷媒ポンプの運転
を開始することなく吸収冷凍機の運転を停止するように
した第２の制御方法と、を提供することにより、前記し
た従来技術の課題を解決するものである。[0006] In the control method according to the first configuration, when the operation of the pump for supplying the fluid to the portion to be cooled is started, whether the pressure inside the evaporator and / or the absorber shows a pressure drop exceeding a set value. When the refrigerant supplied from the condenser and flushed in the evaporator shows a temperature decrease exceeding the set value, or the absorbent supplied from the regenerator to the absorber shows a temperature rise exceeding the set value, the refrigerant is By providing a second control method in which the operation of the absorption refrigerator is stopped without starting the operation of the pump, the above-described problem of the related art is solved.
【０００７】[0007]
【発明の実施の形態】以下、本発明の一実施形態を図面
に基づいて詳細に説明する。図１に例示したものは、冷
水を負荷に循環供給する二重効用吸収冷凍機であり、冷
媒に水を、吸収液に臭化リチウム（ＬｉＢｒ）水溶液を
使用したものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The example illustrated in FIG. 1 is a double effect absorption refrigerator that circulates and supplies cold water to a load, and uses water as a refrigerant and an aqueous solution of lithium bromide (LiBr) as an absorption liquid.
【０００８】図において、１はガスバーナ１Ａ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、８〜１０は吸収液管、１１は吸収液ポンプ、１２〜
１５は冷媒管、１６は冷媒ポンプ、１７は開閉弁、１８
は図示しない冷房負荷に循環供給する冷水が流れる冷水
管、１９は冷水ポンプ、２０は冷却水管、２１は冷却水
ポンプであり、これらの機器はそれぞれ図１に示したよ
うに配管接続されており、この構成自体は従来周知であ
る。In the figure, 1 is a high temperature regenerator equipped with a gas burner 1A, 2 is a low temperature regenerator, 3 is a condenser, 4 is an evaporator, 5 is an absorber, 6 is a low temperature heat exchanger, 7 is a high temperature heat exchanger. Vessel, 8-10 are absorption liquid pipes, 11 is absorption liquid pump, 12-
15 is a refrigerant pipe, 16 is a refrigerant pump, 17 is an on-off valve, 18
Is a chilled water pipe through which chilled water is supplied to circulate a cooling load (not shown), 19 is a chilled water pump, 20 is a chilled water pipe, and 21 is a chilled water pump, and these devices are respectively connected by piping as shown in FIG. The configuration itself is conventionally known.
【０００９】そして、上記構成の二重効用吸収冷凍機に
おいて、開閉弁１７を閉じ、冷却水管２０に冷却水を流
し、ガスバーナ１Ａに点火して高温再生器１で稀吸収液
を加熱すると、稀吸収液から蒸発分離した冷媒蒸気と、
冷媒蒸気を分離して吸収液の濃度が高くなった中間吸収
液とが得られる。In the double effect absorption refrigerator having the above structure, when the on-off valve 17 is closed, cooling water is supplied to the cooling water pipe 20, the gas burner 1A is ignited, and the high temperature regenerator 1 heats the rare absorbing liquid. Refrigerant vapor evaporated and separated from the absorbent,
An intermediate absorbent having a higher concentration of the absorbent is obtained by separating the refrigerant vapor.
【００１０】高温再生器１で生成された高温の冷媒蒸気
は、冷媒管１２を通って低温再生器２に入り、高温再生
器１で生成され吸収液管９により高温熱交換器７を経由
して低温再生器２に入った中間吸収液を加熱して放熱凝
縮し、凝縮器３に入る。The high-temperature refrigerant vapor generated by the high-temperature regenerator 1 enters the low-temperature regenerator 2 through the refrigerant pipe 12, and is generated by the high-temperature regenerator 1 and passes through the high-temperature heat exchanger 7 by the absorbing liquid pipe 9. Then, the intermediate absorbing liquid that has entered the low-temperature regenerator 2 is radiated and condensed by heating and enters the condenser 3.
【００１１】また、低温再生器２で加熱されて中間吸収
液から蒸発分離した冷媒は凝縮器３へ入り、冷却水管２
０内を流れる水と熱交換して凝縮液化し、冷媒管１２か
ら凝縮して供給される冷媒と一緒になって冷媒管１３を
通って蒸発器４に入る。The refrigerant heated in the low-temperature regenerator 2 and evaporated and separated from the intermediate absorption liquid enters the condenser 3 and enters the cooling water pipe 2.
The refrigerant exchanges heat with water flowing through the inside of the tube 0 to be condensed and liquefied, and enters the evaporator 4 through the refrigerant tube 13 together with the refrigerant condensed and supplied from the refrigerant tube 12.
【００１２】蒸発器４に入って冷媒液溜りに溜まった冷
媒液は、冷水管１８に接続された伝熱管１８Ａの上に冷
媒ポンプ１６によって散布され、冷水管１８を介して供
給される水と熱交換して蒸発し、伝熱管１８Ａの内部を
流れる水を冷却する。The refrigerant liquid entering the evaporator 4 and stored in the refrigerant liquid reservoir is sprayed by a refrigerant pump 16 on a heat transfer tube 18A connected to the chilled water pipe 18, and is supplied with water supplied through the chilled water pipe 18. The heat exchange evaporates and cools the water flowing inside the heat transfer tube 18A.
【００１３】そして、蒸発器４で蒸発した冷媒は吸収器
５に入り、低温再生器２で加熱されて冷媒を蒸発分離
し、吸収液の濃度が一層高まった吸収液、すなわち吸収
液管１０により低温熱交換器６を経由して供給され、上
方から散布される濃吸収液に吸収される。The refrigerant evaporated by the evaporator 4 enters the absorber 5 and is heated by the low-temperature regenerator 2 to evaporate and separate the refrigerant. It is supplied through the low-temperature heat exchanger 6 and is absorbed by the concentrated absorbent sprayed from above.
【００１４】吸収器５で冷媒を吸収して濃度の薄くなっ
た吸収液、すなわち稀吸収液は吸収液ポンプ１１の運転
により、低温熱交換器６・高温熱交換器７を経由して高
温再生器１へ吸収液管８から送られる。The absorption liquid whose concentration has been reduced by absorbing the refrigerant in the absorber 5, that is, the diluted absorption liquid, is regenerated at a high temperature through the low-temperature heat exchanger 6 and the high-temperature heat exchanger 7 by the operation of the absorption liquid pump 11. It is sent from the absorbing liquid tube 8 to the vessel 1.
【００１５】上記のように吸収冷凍機の運転が行われる
と、蒸発器４の内部に配管された伝熱管１８Ａにおいて
冷媒の気化熱によって冷却された冷水が、冷水ポンプ１
９の運転により冷水管１８を介して図示しない冷房負荷
に循環供給され、冷却作用を果たす。When the absorption chiller is operated as described above, the chilled water cooled by the heat of vaporization of the refrigerant in the heat transfer tube 18A provided inside the evaporator 4 is supplied to the chilled water pump 1.
By the operation of 9, it is circulated and supplied to a cooling load (not shown) through the chilled water pipe 18 to perform a cooling function.
【００１６】Ｃは、上記のような動作機能を有する二重
効用吸収冷凍機に設けた制御器であり、マイコンや記憶
手段などを備えて構成され、図示しない冷房負荷に冷水
を循環供給するための冷水管１８に蒸発器４の伝熱管１
８Ａから流れ出た冷水の温度情報を、冷水管１８の蒸発
器４出口側に設けた温度センサ２２から取り込み、この
冷水の蒸発器出口側温度が所定の設定温度に維持される
ように、ガスバーナ１Ａに接続された図示しない加熱量
制御弁の開度を調節して高温再生器１への入熱量を制御
する従来周知の容量制御機能を備えている。C is a controller provided in the double-effect absorption refrigerator having the above-described operation function, and is provided with a microcomputer, a storage means, and the like, for circulating and supplying cold water to a cooling load (not shown). Heat transfer tube 1 of evaporator 4 to cold water tube 18
The temperature information of the chilled water flowing out of the chilled water 8A is taken in from the temperature sensor 22 provided at the outlet side of the evaporator 4 of the chilled water pipe 18, and the gas burner 1A is controlled so that the temperature of the chilled water outlet side of the evaporator is maintained at a predetermined set temperature. Is provided with a conventionally well-known capacity control function of controlling the amount of heat input to the high-temperature regenerator 1 by adjusting the opening of a heating amount control valve (not shown) connected to the heater.
【００１７】すなわち、制御器Ｃには、予め決めた設定
温度と温度センサ２２が検出した冷水の温度との差が大
きければ大きいほど、ガスバーナ１Ａに接続された加熱
量制御弁の開度を大きくし、温度センサ２２が検出した
冷水の温度が設定温度に達すると、加熱量制御弁の開度
を設定開度に抑えるか、閉じる等の通常の容量制御を行
うための制御プログラムを記憶手段に格納して備えてい
る。That is, the controller C increases the opening of the heating amount control valve connected to the gas burner 1A as the difference between the predetermined set temperature and the temperature of the chilled water detected by the temperature sensor 22 increases. Then, when the temperature of the chilled water detected by the temperature sensor 22 reaches the set temperature, a control program for controlling the opening of the heating amount control valve to the set opening or performing normal capacity control such as closing is stored in the storage means. Stored and equipped.
【００１８】また、制御器Ｃは、高温再生器１にある吸
収液の液面が所定のレベルを維持するように吸収液ポン
プ１１の運転を制御すると共に、温度センサ２２が検出
した冷水の温度が設定温度（例えば７℃）より高いとき
に冷媒ポンプ１６を運転するための制御プログラムも記
憶手段に備えている。The controller C controls the operation of the absorbent pump 11 so that the liquid level of the absorbent in the high-temperature regenerator 1 maintains a predetermined level, and controls the temperature of the cold water detected by the temperature sensor 22. The storage means also has a control program for operating the refrigerant pump 16 when is higher than a set temperature (for example, 7 ° C.).
【００１９】さらに、この制御器Ｃは、蒸発器４に取り
付けた圧力センサ２３が検出する蒸発器４内部の気相部
の圧力Ｐに基づいて、ガスバーナ１Ａの点火・燃焼など
に遅らせて冷水ポンプ１９を始動するための図２に示し
た制御プログラムも記憶手段に備えている。Further, the controller C delays the ignition / combustion of the gas burner 1A based on the pressure P of the gas phase inside the evaporator 4 detected by the pressure sensor 23 attached to the evaporator 4, and controls the chilled water pump. The control program shown in FIG. 2 for starting the engine 19 is also provided in the storage means.
【００２０】すなわち、制御器Ｃは、図示しない起動ス
イッチが投入されると、ステップＳ１においては冷却水
ポンプ２１に所要の制御信号を出力してこれを起動し、
ステップＳ２では吸収液ポンプ１１に所要の制御信号を
出力してこれを起動し、ステップＳ３でガスバーナ１Ａ
に所要の制御信号を出力して点火・燃焼を開始させる。That is, when a start switch (not shown) is turned on, the controller C outputs a required control signal to the cooling water pump 21 in step S1 to start it.
In step S2, a required control signal is output to the absorbent pump 11 to start it, and in step S3, the gas burner 1A
To start ignition / combustion.
【００２１】ステップＳ４では、圧力センサ２３によっ
て蒸発器４内の気相部の圧力Ｐを検出する。In step S4, the pressure P of the gas phase in the evaporator 4 is detected by the pressure sensor 23.
【００２２】そして、ステップＳ５では、ステップＳ４
で検出した前記圧力Ｐが、冷媒液が蒸発し易い圧力、例
えば１４００Ｐａ以下であるか否かを判定し、前記圧力
Ｐが１４００Ｐａ以下であると判定されたときにはステ
ップＳ６に移行して冷水ポンプ１９を起動し、そうでな
いと判定されたときにはステップＳ４に戻って前記圧力
Ｐの検出を繰り返す。Then, in step S5, step S4
It is determined whether or not the pressure P detected in step (1) is a pressure at which the refrigerant liquid is likely to evaporate, for example, 1400 Pa or less. If the pressure P is determined to be 1400 Pa or less, the process proceeds to step S6 and the chilled water pump 19 Is started, and if it is determined that it is not, the process returns to step S4 to repeat the detection of the pressure P.
【００２３】ステップＳ７では、冷水ポンプ１９が図示
しない冷房負荷に供給している冷水の流量Ｖを、冷水管
１８に取り付けた流量センサ２４によって検出する。In step S7, the flow rate V of the chilled water supplied to the cooling load (not shown) by the chilled water pump 19 is detected by the flow rate sensor 24 attached to the chilled water pipe 18.
【００２４】ステップＳ８では、この冷水流量Ｖが所定
の流量α以上あるか否かを判定し、イエスと判定された
ときには冷媒ポンプ１６に所要の制御信号を出力してこ
れを起動し、そうでないときにはステップＳ１０に移行
して前記圧力Pを圧力センサ２３により検出する。In step S8, it is determined whether or not the chilled water flow rate V is equal to or more than a predetermined flow rate α. If the determination is affirmative, a required control signal is output to the refrigerant pump 16 to activate it, and if not, it is not activated. Sometimes, the process proceeds to step S10, and the pressure P is detected by the pressure sensor 23.
【００２５】そして、ステップＳ１１では、ステップＳ
１０で検出した前記圧力Ｐが、７００Ｐａ以上であるか
否かを判定し、イエスと判定されたときにはステップＳ
７に戻って前記冷水流量Ｖを繰り返し検出し、そうでな
いときには冷却水ポンプ２１・吸収液ポンプ１１・冷水
ポンプ１９・ガスバーナ１Ａなどを緊急停止すると共
に、ブザーの吹鳴、ライトの点灯・点滅などで警報を発
する。Then, in step S11, step S
It is determined whether or not the pressure P detected in step 10 is equal to or higher than 700 Pa.
7, the cold water flow rate V is repeatedly detected, and if not, the cooling water pump 21, the absorption liquid pump 11, the cold water pump 19, the gas burner 1A, etc. are stopped urgently, and the buzzer sounds, the light is turned on and blinks, etc. Raise an alarm.
【００２６】したがって、本発明によれば、冷媒が容易
に蒸発する圧力まで蒸発器４の内部の圧力が下がるのを
待って冷水ポンプ１９の運転が開始されると共に、冷水
の流量が確保されるのを確認してすぐに冷媒ポンプ１６
の運転が開始されるので、伝熱管１８Ａの内部にある水
は速やかに冷却され、これが冷水ポンプ１９によって冷
房負荷に供給されるので、速やかな冷房運転の立ち上げ
が可能となる。Therefore, according to the present invention, the operation of the chilled water pump 19 is started after the internal pressure of the evaporator 4 is reduced to a pressure at which the refrigerant is easily evaporated, and the flow rate of the chilled water is ensured. Check that the refrigerant pump 16
Is started, the water in the heat transfer tube 18A is quickly cooled, and is supplied to the cooling load by the chilled water pump 19, so that the cooling operation can be quickly started.
【００２７】また、冷水ポンプ１９の運転を開始したと
きに、蒸発気の内部の圧力Ｐが設定圧力以下に低下した
ときには、冷媒ポンプ１６を起動しないし、冷凍機全体
の運転を停止するので、伝熱管１８Ａの内部を流れる水
や冷媒の水が凍ることもない。When the operation of the chilled water pump 19 is started and the internal pressure P of the evaporative gas drops below the set pressure, the refrigerant pump 16 is not started and the operation of the whole refrigerator is stopped. Water flowing through the heat transfer tube 18A and water of the refrigerant do not freeze.
【００２８】なお、制御器Ｃとしては、圧力センサ２３
が検出する前記圧力Ｐが設定圧力以下になるのを待って
ステップＳ６に移行する代わりに、冷媒管１３によって
凝縮器３から供給され、蒸発器４でフラッシングしてい
る冷媒の温度を温度センサ２５によって検出し、その温
度が設定温度、例えば１５℃以下になるのを待ってステ
ップＳ６に移行するようにしたり、吸収液管１０によっ
て低温再生器２から吸収器５に供給されている濃吸収液
の温度を温度センサ２６によって検出し、その温度が所
定の上昇、例えば５℃／分の上昇を示し、濃吸収液の循
環が確認されるのを待ってステップＳ６に移行するよう
にしても、前記したのと同様の作用効果が得られる。The controller C includes a pressure sensor 23
Instead of waiting for the detected pressure P to become equal to or lower than the set pressure and proceeding to step S6, the temperature of the refrigerant supplied from the condenser 3 by the refrigerant pipe 13 and flushed by the evaporator 4 is measured by the temperature sensor 25. And the process proceeds to step S6 after the temperature is lowered to a set temperature, for example, 15 ° C. or less, or the concentrated absorbent supplied to the absorber 5 from the low-temperature regenerator 2 by the absorbent tube 10. May be detected by the temperature sensor 26, the temperature indicates a predetermined rise, for example, a rise of 5 ° C./min, and the flow proceeds to step S6 after the circulation of the concentrated absorbent is confirmed. The same operation and effect as described above can be obtained.
【００２９】また、制御器Ｃとしては、ステップＳ１
０、Ｓ１１も同様に変更することができる。この場合、
ステップＳ４、Ｓ５と、ステップＳ１０、Ｓ１１では同
じ物理量を検出して判定する方が、取り付けるセンサが
共用できると云ったメリットがあるが、ステップＳ４、
Ｓ５と、ステップＳ１０、Ｓ１１とで異なる物理量、す
なわちステップＳ４、Ｓ５では例えば蒸発器４の内部の
圧力Ｐを検出して判定し、ステップＳ１０、Ｓ１１では
温度センサ２５または２６によって温度を検出し、その
温度に基づいて判定するように構成するものであっても
構わない。The controller C operates in step S1.
0 and S11 can be similarly changed. in this case,
In steps S4 and S5, and in steps S10 and S11, it is advantageous to detect and determine the same physical quantity because the attached sensor can be shared.
In step S5 and steps S10 and S11, different physical quantities, that is, in steps S4 and S5, for example, the pressure P inside the evaporator 4 is detected and determined. In steps S10 and S11, the temperature is detected by the temperature sensor 25 or 26, The configuration may be such that the determination is made based on the temperature.
【００３０】また、制御器Ｃとしては、ステップＳ７と
Ｓ１１の間の制御を所定時間を超えて繰り返すようにな
ったときには、緊急停止するように構成することもでき
る。Further, the controller C may be configured to make an emergency stop when the control between steps S7 and S11 is repeated over a predetermined time.
【００３１】また、本発明の制御方法は、高温再生器１
で加熱生成した高温の冷媒蒸気と吸収液とを、吸収器５
または蒸発器４に直接供給できるようにも配管し、蒸発
器４の伝熱管１８Ａの内部を流れる水を加熱して供給す
ることもできるようにした、吸収冷温水機でも同様に有
効である。Further, the control method of the present invention provides a high-temperature regenerator 1
The high-temperature refrigerant vapor generated by heating in
Alternatively, an absorption chiller / heater is also effective, in which piping is provided so that it can be directly supplied to the evaporator 4 so that water flowing inside the heat transfer tube 18A of the evaporator 4 can be heated and supplied.
【００３２】[0032]
【発明の効果】以上説明したように本発明によれば、蒸
発器で冷媒が容易に蒸発できる状態になるまで待って冷
水ポンプの運転を開始することが可能であり、このよう
な制御を行うことで冷却されていない水が冷房負荷に供
給され、系内の温度を上げて冷房の立ち上げ時間が長く
なると云った従来技術の不都合は解消され、蒸発器の伝
熱管で速やかに得られた冷水を冷房負荷に供給すること
で、短時間で冷房運転を立ち上げることができる。As described above, according to the present invention, it is possible to start the operation of the chilled water pump after waiting until the refrigerant can be easily evaporated in the evaporator. As a result, the disadvantage of the prior art that uncooled water was supplied to the cooling load, raising the temperature in the system and increasing the cooling start-up time was resolved, and the water was quickly obtained by the heat transfer tubes of the evaporator. By supplying the cold water to the cooling load, the cooling operation can be started in a short time.
【００３３】また、冷水ポンプの運転を開始しても、蒸
発気の内部が設定値を超える圧力低下を示すなど、冷媒
が異常に蒸発し易くなったときには、冷媒ポンプを起動
しないし、冷凍機全体の運転を停止するので、伝熱管の
内部を流れる水や冷媒の水が凍ることはなく安全性にも
優れている。Further, even when the chilled water pump is started, if the refrigerant becomes abnormally easy to evaporate, for example, the inside of the evaporating gas shows a pressure drop exceeding a set value, the refrigerant pump is not started and the refrigerator is not started. Since the entire operation is stopped, the water flowing in the heat transfer tube and the coolant water do not freeze, and the safety is excellent.
【図１】装置構成の説明図である。FIG. 1 is an explanatory diagram of an apparatus configuration.
【図２】制御方法の説明図である。FIG. 2 is an explanatory diagram of a control method.
１ 高温再生器 １Ａ ガスバーナ ２ 低温再生器 ３ 凝縮器 ４ 蒸発器 ５ 吸収器 ６ 低温熱交換器 ７ 高温熱交換器 ８〜１０ 吸収液管 １１ 吸収液ポンプ １２〜１５ 冷媒管 １６ 冷媒ポンプ １７ 開閉弁 １８ 冷水管 １９ 冷水ポンプ ２０ 冷却水管 ２１ 冷却水ポンプ ２２ 温度センサ ２３ 圧力センサ ２４ 流量センサ ２５・２６ 温度センサ Ｃ 制御器 DESCRIPTION OF SYMBOLS 1 High temperature regenerator 1A Gas burner 2 Low temperature regenerator 3 Condenser 4 Evaporator 5 Absorber 6 Low temperature heat exchanger 7 High temperature heat exchanger 8-10 Absorbing liquid pipe 11 Absorbing liquid pump 12-15 Refrigerant pipe 16 Refrigerant pump 17 Opening / closing valve Reference Signs List 18 cold water pipe 19 cold water pump 20 cooling water pipe 21 cooling water pump 22 temperature sensor 23 pressure sensor 24 flow rate sensor 25/26 temperature sensor C controller
───────────────────────────────────────────────────── フロントページの続き (72)発明者 上篭 伸一 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 *** 秀明 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 Ｆターム(参考） 3L093 AA01 BB11 BB31 CC03 CC05 DD01 DD09 EE04 EE21 EE22 GG01 GG02 HH08 HH19 JJ06 KK05 LL03 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinichi Kamigo 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Hideaki Koana 2-chome Keihanhondori, Moriguchi-shi, Osaka No.5-5 Sanyo Electric Co., Ltd. F term (reference) 3L093 AA01 BB11 BB31 CC03 CC05 DD01 DD09 EE04 EE21 EE22 GG01 GG02 HH08 HH19 JJ06 KK05 LL03
Claims (2)
クルを構成する蒸発器の内部に配管した伝熱管内部で冷
媒に蒸発熱を奪われて冷却された流体を被冷却部に供給
して冷却作用を行う吸収冷凍機の起動時に、再生器にお
ける吸収液の加熱と、吸収器および凝縮器への冷却水の
供給を先行して開始し、次に蒸発器および／または吸収
器の内部圧力、凝縮器から供給されて蒸発器でフラッシ
ングしている冷媒の温度、再生器から吸収器に供給され
ている吸収液の温度、の少なくとも何れかに基づいて、
前記流体を被冷却部に供給するポンプの運転を開始し、
そのご凝縮器から供給されて冷媒液溜りに溜まった冷媒
液を前記伝熱管に散布するための冷媒ポンプの運転を開
始することを特徴とする吸収冷凍機の制御方法。1. A refrigerant which is deprived of heat of vaporization by a refrigerant and supplied to a cooled part in a heat transfer tube which is disposed inside an evaporator constituting a refrigeration cycle with a regenerator, a condenser, an absorber and the like. When the absorption refrigerator that performs the cooling operation is started, heating of the absorption liquid in the regenerator and supply of cooling water to the absorber and the condenser are started first, and then the inside of the evaporator and / or the absorber is started. Based on at least one of the pressure, the temperature of the refrigerant supplied from the condenser and flushing in the evaporator, and the temperature of the absorbent supplied from the regenerator to the absorber,
Start operation of a pump that supplies the fluid to the part to be cooled,
A method for controlling an absorption refrigerator, comprising: starting an operation of a refrigerant pump for spraying the refrigerant liquid supplied from the condenser and stored in the refrigerant liquid reservoir to the heat transfer tube.
運転を開始したときに、蒸発器および／または吸収器の
内部が設定値を超える圧力低下を示すか、凝縮器から供
給されて蒸発器でフラッシングしている冷媒が設定値を
超える温度低下を示すか、再生器から吸収器に供給され
ている吸収液が設定値を超える温度上昇を示すときに
は、冷媒ポンプの運転を開始することなく吸収冷凍機の
運転を停止することを特徴とする請求項１記載の吸収冷
凍機の制御方法。2. When the operation of the pump for supplying the fluid to the part to be cooled is started, the pressure inside the evaporator and / or the absorber shows a pressure drop exceeding a set value, or the pressure is supplied from the condenser to evaporate. When the refrigerant being flushed in the reactor shows a temperature decrease exceeding the set value, or when the absorbing liquid supplied from the regenerator to the absorber shows a temperature rise exceeding the set value, the operation of the refrigerant pump is not started. The method according to claim 1, wherein the operation of the absorption refrigerator is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02217799A JP4090135B2 (en) | 1999-01-29 | 1999-01-29 | Control method of absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02217799A JP4090135B2 (en) | 1999-01-29 | 1999-01-29 | Control method of absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000220906A true JP2000220906A (en) | 2000-08-08 |
| JP4090135B2 JP4090135B2 (en) | 2008-05-28 |
Family
ID=12075526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02217799A Expired - Fee Related JP4090135B2 (en) | 1999-01-29 | 1999-01-29 | Control method of absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4090135B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3434283B2 (en) | 2001-05-30 | 2003-08-04 | 三菱重工業株式会社 | Absorption refrigerator and how to start it |
| JP2014190679A (en) * | 2013-03-28 | 2014-10-06 | Ebara Refrigeration Equipment & Systems Co Ltd | Absorption refrigerator |
| JP2017083159A (en) * | 2015-10-27 | 2017-05-18 | 荏原冷熱システム株式会社 | Absorption heat pump |
| CN114051364A (en) * | 2021-11-30 | 2022-02-15 | 广州量光数据服务有限公司 | Energy-efficient data center cooling system and method using vapor lithium bromide technology |
-
1999
- 1999-01-29 JP JP02217799A patent/JP4090135B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3434283B2 (en) | 2001-05-30 | 2003-08-04 | 三菱重工業株式会社 | Absorption refrigerator and how to start it |
| JP2014190679A (en) * | 2013-03-28 | 2014-10-06 | Ebara Refrigeration Equipment & Systems Co Ltd | Absorption refrigerator |
| JP2017083159A (en) * | 2015-10-27 | 2017-05-18 | 荏原冷熱システム株式会社 | Absorption heat pump |
| CN114051364A (en) * | 2021-11-30 | 2022-02-15 | 广州量光数据服务有限公司 | Energy-efficient data center cooling system and method using vapor lithium bromide technology |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4090135B2 (en) | 2008-05-28 |
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