JP3180112B2 - Absorption refrigerator - Google Patents
Absorption refrigeratorInfo
- Publication number
- JP3180112B2 JP3180112B2 JP26524895A JP26524895A JP3180112B2 JP 3180112 B2 JP3180112 B2 JP 3180112B2 JP 26524895 A JP26524895 A JP 26524895A JP 26524895 A JP26524895 A JP 26524895A JP 3180112 B2 JP3180112 B2 JP 3180112B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- concentrated solution
- absorber
- temperature regenerator
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷房運転を良好に実行
することができる吸収式冷凍機に関し、特に、吸収式冷
凍機における各構成機器の配置の自由度を高めることが
できる吸収式冷凍機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption refrigerating machine capable of performing a cooling operation well, and more particularly, to an absorption refrigerating machine capable of increasing the degree of freedom of arrangement of each component in the absorption refrigerating machine. About the machine.
【０００２】[0002]
【従来の技術】このような従来の吸収式冷凍機には、例
えば、図６に示すものがある。この種の吸収式冷凍機
は、高温の熱エネルギーを直接消費することによって冷
凍作用等を行わせている。ここで、図６に示す従来の吸
収式冷凍機の動作について、以下に述べる。2. Description of the Related Art FIG. 6 shows such a conventional absorption refrigerator. This type of absorption refrigerator performs a refrigerating operation or the like by directly consuming high-temperature heat energy. Here, the operation of the conventional absorption refrigerator shown in FIG. 6 will be described below.
【０００３】まず、吸収器６の稀溶液は、溶液ポンプ７
によって加圧されて、低温熱交換器８及び高温熱交換器
９で熱交換した後に高温再生器１に供給される。高温再
生器１においてバーナー（図示せず）により加熱された
溶液は分離器２に入り、分離器２において冷媒蒸気と中
間濃溶液とに分離される。First, the dilute solution in the absorber 6 is supplied to a solution pump 7
After the heat is exchanged by the low-temperature heat exchanger 8 and the high-temperature heat exchanger 9, the heat is supplied to the high-temperature regenerator 1. The solution heated by the burner (not shown) in the high-temperature regenerator 1 enters the separator 2 and is separated into the refrigerant vapor and the intermediate concentrated solution in the separator 2.
【０００４】分離器２で分離された中間濃溶液は、高温
熱交換器９で稀溶液と熱交換した後、低温再生器３でさ
らに加熱されて濃溶液となり、低温熱交換器８を経由し
て吸収器６の上部に配置された濃溶液入口部に供給され
る。この濃溶液入口部に供給された濃溶液は、吸収器６
内に配置された冷却管に分配滴下される。この濃溶液
は、その冷却管の表面を流下しながら冷媒蒸気を吸収す
る。このとき発生する吸収熱は、その冷却管を流れる冷
却水により除去される。The intermediate concentrated solution separated in the separator 2 exchanges heat with the dilute solution in the high-temperature heat exchanger 9, and is further heated in the low-temperature regenerator 3 to become a concentrated solution, and passes through the low-temperature heat exchanger 8. The concentrated solution is supplied to the inlet of the concentrated solution disposed above the absorber 6. The concentrated solution supplied to the concentrated solution inlet is supplied to the absorber 6
It is distributed and dropped to a cooling pipe arranged inside. The concentrated solution absorbs the refrigerant vapor while flowing down the surface of the cooling pipe. The absorption heat generated at this time is removed by the cooling water flowing through the cooling pipe.
【０００５】また、分離器２で発生した冷媒蒸気は、低
温再生器３に導かれ、ここで中間濃溶液を再度加熱して
熱交換した後に凝縮器４に導かれる。低温再生器３で中
間濃溶液から発生した蒸気も凝縮器４に導かれる。この
凝縮器４の内部には、冷却管が導入されており、この冷
却管に流れる冷却水と熱交換を行って凝縮熱を放熱する
ことにより、冷媒蒸気が冷却されて凝縮液化される。[0005] The refrigerant vapor generated in the separator 2 is guided to the low-temperature regenerator 3, where the intermediate concentrated solution is heated again to exchange heat and then to the condenser 4. Vapor generated from the intermediate concentrated solution in the low-temperature regenerator 3 is also guided to the condenser 4. A cooling pipe is introduced into the inside of the condenser 4 and exchanges heat with cooling water flowing through the cooling pipe to radiate heat of condensation, whereby the refrigerant vapor is cooled and condensed and liquefied.
【０００６】その凝縮器４において液化された冷媒液
は、蒸発器５に導かれる。この冷媒液は、蒸発器内に散
布されて蒸発し、蒸発器内に導入されている冷温水管に
流れる水から熱を奪う。これにより、前記冷温水管から
冷水を得ることができ、この冷水で冷房等を行うことが
できる。The refrigerant liquid liquefied in the condenser 4 is guided to an evaporator 5. This refrigerant liquid is sprayed in the evaporator and evaporates, and removes heat from the water flowing through the cold / hot water pipe introduced into the evaporator. Thereby, cold water can be obtained from the cold / hot water pipe, and cooling or the like can be performed with the cold water.
【０００７】これらにより、吸収冷凍器の通常の冷房運
転では、高温再生器１、低温再生器３、吸収器６の順で
圧力差が生じて、吸収液が循環している。As a result, in a normal cooling operation of the absorption refrigerator, a pressure difference is generated in the order of the high-temperature regenerator 1, the low-temperature regenerator 3, and the absorber 6, and the absorbent is circulated.
【０００８】[0008]
【課題を解決するための手段】本発明の吸収式冷凍機
は、溶液を加熱する高温再生器と、この高温再生器で加
熱された溶液を冷媒蒸気と中間濃溶液とに分離する分離
器と、前記中間濃溶液をさらに加熱して濃溶液にする低
温再生器と、前記分離器で発生した冷媒蒸気及び前記低
温再生器で発生した蒸気を液化する凝縮器と、この凝縮
器で液化した冷媒を蒸発させて冷媒蒸気とする蒸発器
と、この蒸発器で発生した冷媒蒸気を前記低温再生器か
ら流入した濃溶液に吸収させる吸収器と、この吸収器に
おいて生じた稀溶液を前記高温再生器に導く手段とを有
する吸収式冷凍機において、前記低温再生器の濃溶液出
口部の設置位置は、前記吸収器の濃溶液入口部の設置位
置よりも低くなっており、前記濃溶液を前記低温再生器
の濃溶液出口部から前記吸収器の濃溶液入口部に導く濃
溶液管と、この濃溶液管における流路と前記吸収器にお
ける下方部位とを導通させるバイパス管と、このバイパ
ス管の流路を開閉するバイパス弁とを有することを特徴
とする。An absorption refrigerator according to the present invention comprises a high-temperature regenerator for heating a solution, and a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution. A low-temperature regenerator for further heating the intermediate concentrated solution to a concentrated solution, a condenser for liquefying the refrigerant vapor generated in the separator and the vapor generated in the low-temperature regenerator, and a refrigerant liquefied in the condenser An evaporator for evaporating the refrigerant vapor into a refrigerant vapor, an absorber for absorbing the refrigerant vapor generated in the evaporator into the concentrated solution flowing from the low-temperature regenerator, and a high-temperature regenerator for the dilute solution generated in the absorber. Means for guiding the concentrated solution out of the low-temperature regenerator.
The installation position of the mouth is the installation position of the concentrated solution inlet of the absorber.
And the concentrated solution is cooled by the low-temperature regenerator.
A concentrated solution pipe leading from the concentrated solution outlet to the concentrated solution inlet of the absorber, a bypass pipe for conducting a flow path in the concentrated solution pipe and a lower portion in the absorber, and a flow path of the bypass pipe. And a bypass valve that opens and closes.
【０００９】そのため、吸収式冷凍機の運転立上りに長
時間を要したり、冷房能力が低いまま運転し続けると、
すなわち冷媒に液が混入することになる。Therefore, if it takes a long time to start the operation of the absorption chiller, or if the absorption chiller is continuously operated with a low cooling capacity,
That is, the liquid is mixed into the refrigerant.
【００１０】そして、従来の吸収式冷凍機では、このよ
うな問題に対処するために、低温再生器３における濃溶
液出口部１１を吸収器６における濃溶液入口部１４より
も高い位置に設ける必要があった。In the conventional absorption refrigerator, in order to cope with such a problem, the concentrated solution outlet 11 in the low-temperature regenerator 3 needs to be provided at a position higher than the concentrated solution inlet 14 in the absorber 6. was there.
【００１１】これらにより、従来の吸収式冷凍機では、
吸収器に対して低温再生器を所定の高さ以上の位置に設
けなければならず、吸収式冷凍機についての設計の自由
度が奪われるとともに、その装置を小型化することが非
常に困難であった。[0011] Thus, in the conventional absorption refrigerator,
A low-temperature regenerator must be provided at a position higher than a predetermined height with respect to the absorber, which deprives the design freedom of the absorption refrigerator and makes it very difficult to reduce the size of the device. there were.
【００１２】そこで、本発明は、冷房運転を良好に実行
することができるとともに、吸収式冷凍機を構成する各
構成機器の配置の自由度が高い吸収式冷凍機を提供する
ことを目的とする。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an absorption refrigerator capable of performing a cooling operation satisfactorily and having a high degree of freedom in the arrangement of the components constituting the absorption refrigerator. .
【００１３】一方、低温再生器３における濃溶液出口部
１１を吸収器６における濃溶液入口部１４よりも低い位
置に設けた場合には、外気温度若しくは冷却水温度の低
下時にも、低温再生器３と吸収器６間の圧力差が小さく
なり、冷媒に溶液が混入して冷凍能力の低下を招いてい
た。On the other hand, when the concentrated solution outlet 11 in the low temperature regenerator 3 is provided at a position lower than the concentrated solution inlet 14 in the absorber 6, even when the outside air temperature or the cooling water temperature decreases, the low temperature regenerator The pressure difference between 3 and the absorber 6 became small, and the solution was mixed in the refrigerant, resulting in a decrease in refrigeration capacity.
【００１４】そこで、本発明は、低温再生器における濃
溶液出口部を吸収器６における濃溶液入口部よりも低い
位置に配置した吸収式冷凍機において、外気温度若しく
は冷却水温度の低下時にも冷凍能力が低下せず、各構成
機器の配置の自由度が高いとともに冷凍能力も高い吸収
式冷凍機を提供することも目的とする。Therefore, the present invention provides an absorption refrigerator in which the concentrated solution outlet of the low-temperature regenerator is located at a position lower than the concentrated solution inlet of the absorber 6 even when the outside air temperature or the cooling water temperature decreases. It is another object of the present invention to provide an absorption refrigerator having a high degree of freedom in arranging each component device without a decrease in capacity and a high refrigeration capacity.
【００１５】[0015]
【課題を解決するための手段】本発明の吸収式冷凍機
は、溶液を加熱する高温再生器と、この高温再生器で加
熱された溶液を冷媒蒸気と中間濃溶液とに分離する分離
器と、前記中間濃溶液をさらに加熱して濃溶液にする低
温再生器と、前記分離器で発生した冷媒蒸気及び前記低
温再生器で発生した蒸気を液化する凝縮器と、この凝縮
器で液化した冷媒を蒸発させて冷媒蒸気とする蒸発器
と、この蒸発器で発生した冷媒蒸気を前記低温再生器か
ら流入した濃溶液に吸収させる吸収器と、この吸収器に
おいて生じた稀溶液を前記高温再生器に導く手段とを有
する吸収式冷凍機において、前記低温再生器で生じた濃
溶液を前記吸収器に導く濃溶液管と、この濃溶液管にお
ける流路と前記吸収器における下方部位との導通させる
バイパス管と、このバイパス管の流路を開閉するバイパ
ス弁とを有することを特徴とする。An absorption refrigerator according to the present invention comprises a high-temperature regenerator for heating a solution, and a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution. A low-temperature regenerator for further heating the intermediate concentrated solution to a concentrated solution, a condenser for liquefying the refrigerant vapor generated in the separator and the vapor generated in the low-temperature regenerator, and a refrigerant liquefied in the condenser An evaporator for evaporating the refrigerant vapor into a refrigerant vapor, an absorber for absorbing the refrigerant vapor generated in the evaporator into the concentrated solution flowing from the low-temperature regenerator, and a high-temperature regenerator for the dilute solution generated in the absorber. And a means for guiding the concentrated solution generated in the low-temperature regenerator to the absorber, and a flow path between the concentrated solution pipe and a lower portion of the absorber in the absorber. Bypass pipe and this bus And having a bypass valve for opening and closing a flow path of the path tube.
【００１６】また、本発明の吸収式冷凍機は、冷房運転
を開始させる信号が生じた後で、高温再生器における所
定位置の温度が所定温度以下の場合は、バイパス弁を開
き、前記高温再生器における所定位置の温度が前記所定
温度よりも高い場合は、バイパス弁を閉じる制御手段を
有することが好ましい。Further, in the absorption refrigerator according to the present invention, after the signal for starting the cooling operation is generated, if the temperature at the predetermined position in the high temperature regenerator is lower than the predetermined temperature, the bypass valve is opened, and the high temperature regeneration is performed. When the temperature at a predetermined position in the vessel is higher than the predetermined temperature, it is preferable to have control means for closing the bypass valve.
【００１７】また、本発明の吸収式冷凍機は、冷房運転
を開始させる信号が生じた後で、高温再生器内における
所定位置の溶液の温度が所定温度以下の場合は、バイパ
ス弁を開き、前記所定位置の溶液の温度が前記所定温度
よりも高い場合は、バイパス弁を閉じる制御手段を有す
ることが好ましい。Further, in the absorption refrigerator of the present invention, after the signal for starting the cooling operation is generated, if the temperature of the solution at a predetermined position in the high-temperature regenerator is lower than the predetermined temperature, the bypass valve is opened, When the temperature of the solution at the predetermined position is higher than the predetermined temperature, it is preferable to have control means for closing a bypass valve.
【００１８】また、本発明の吸収式冷凍機は、運転を停
止させる信号が生じた後で、高温再生器における所定位
置の温度が所定温度以下の場合は、バイパス弁を開き、
前記高温再生器における所定位置の温度が前記所定温度
よりも高い場合は、バイパス弁を閉じる制御手段を有す
ることが好ましい。Further, in the absorption refrigerator according to the present invention, when a temperature at a predetermined position in the high-temperature regenerator is equal to or lower than a predetermined temperature after the signal for stopping the operation is generated, the bypass valve is opened.
When the temperature at a predetermined position in the high-temperature regenerator is higher than the predetermined temperature, it is preferable to have control means for closing a bypass valve.
【００１９】また、本発明の吸収式冷凍機は、運転を停
止させる信号が生じた後で、高温再生器内における所定
位置の溶液の温度が所定温度以下の場合は、バイパス弁
を開き、前記所定位置の溶液の温度が前記所定温度より
も高い場合は、バイパス弁を閉じる制御手段を有するこ
とが好ましい。Further, in the absorption refrigerator according to the present invention, when the temperature of the solution at a predetermined position in the high-temperature regenerator is equal to or lower than the predetermined temperature after the signal for stopping the operation is generated, the bypass valve is opened, When the temperature of the solution at the predetermined position is higher than the predetermined temperature, it is preferable to have control means for closing the bypass valve.
【００２０】また、本発明の吸収式冷凍機は、溶液を加
熱する高温再生器と、この高温再生器で加熱された溶液
を冷媒蒸気と中間濃溶液とに分離する分離器と、前記中
間濃溶液をさらに加熱して濃溶液にする低温再生器と、
前記分離器で発生した冷媒蒸気及び前記低温再生器で発
生した蒸気を液化する凝縮器と、この凝縮器で液化した
冷媒を蒸発させて冷媒蒸気とする蒸発器と、この蒸発器
で発生した冷媒蒸気を前記低温再生器から流入した濃溶
液に吸収させる吸収器と、この吸収器において生じた稀
溶液を前記高温再生器に導く手段とを有する吸収式冷凍
機において、前記低温再生器の濃溶液出口部の設置位置
は、前記吸収器の濃溶液入口部の設置位置よりも低くな
っており、前記濃溶液を前記低温再生器の濃溶液出口部
から前記吸収器の濃溶液入口部に導く濃溶液管と、この
濃溶液管における流路と前記吸収器における垂直方向の
略中央部位とを導通させるバイパス管と、このバイパス
管の流路を開閉するバイパス弁とを有することを特徴と
する。Further, the absorption refrigerator of the present invention comprises a high-temperature regenerator for heating a solution, a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution, A low-temperature regenerator that further heats the solution to a concentrated solution,
A condenser for liquefying the refrigerant vapor generated in the separator and the vapor generated in the low-temperature regenerator; an evaporator for evaporating the refrigerant liquefied in the condenser to form a refrigerant vapor; and a refrigerant generated in the evaporator. An absorption refrigerator comprising: an absorber for absorbing steam into a concentrated solution flowing from the low-temperature regenerator; and means for guiding a dilute solution generated in the absorber to the high-temperature regenerator. Exit location
Is lower than the installation position of the concentrated solution inlet of the absorber.
And the concentrated solution is supplied to the concentrated solution outlet of the low-temperature regenerator.
A concentrated solution pipe leading to the concentrated solution inlet of the absorber, a bypass pipe for connecting a flow path in the concentrated solution pipe with a substantially central portion of the absorber in a vertical direction, and opening and closing a flow path of the bypass pipe And a bypass valve that operates.
【００２１】また、本発明の吸収式冷凍機は、外気温度
を検出する外気温度検出手段を設け、前記外気温度が所
定温度以下の場合はバイパス弁を開き、前記外気温度が
所定温度よりも高い場合はバイパス弁を閉じる制御手段
を有することが好ましい。Further, the absorption refrigerator of the present invention is provided with an outside air temperature detecting means for detecting an outside air temperature, and when the outside air temperature is lower than a predetermined temperature, a bypass valve is opened, and the outside air temperature is higher than the predetermined temperature. In this case, it is preferable to have control means for closing the bypass valve.
【００２２】また、本発明の吸収式冷凍機は、冷却水の
温度を検出する冷却水温度検出手段を設け、前記冷却水
の温度が所定温度以下の場合はバイパス弁を開き、前記
冷却水の温度が所定温度よりも高い場合はバイパス弁を
閉じる制御手段を有することが好ましい。Further, the absorption chiller of the present invention is provided with cooling water temperature detecting means for detecting the temperature of the cooling water, and when the temperature of the cooling water is lower than a predetermined temperature, a bypass valve is opened to open the cooling water. It is preferable to have a control means for closing the bypass valve when the temperature is higher than a predetermined temperature.
【００２３】また、本発明の吸収式冷凍機は、溶液を加
熱する高温再生器と、この高温再生器で加熱された溶液
を冷媒蒸気と中間濃溶液とに分離する分離器と、前記中
間濃溶液をさらに加熱して濃溶液にする低温再生器と、
前記分離器で発生した冷媒蒸気及び前記低温再生器で発
生した蒸気を液化する凝縮器と、この凝縮器で液化した
冷媒を蒸発させて冷媒蒸気とする蒸発器と、この蒸発器
で発生した冷媒蒸気を前記低温再生器から流入した濃溶
液に吸収させる吸収器と、この吸収器において生じた稀
溶液を前記高温再生器に導く手段とを有する吸収式冷凍
機において、前記吸収器は、板形状の部材を略垂直に配
置した蛇腹プレートと、この蛇腹プレートの一方の板面
における略上端位置へ濃溶液を流す第１分配器と、前記
蛇腹プレートの他方の板面を用いて形成される冷却水を
循環させる熱交換室と、前記蛇腹プレートにおける垂直
方向の中間位置に配置されていて、前記蛇腹プレートを
流れ落ちてきた前記濃溶液を一旦溜めて、その溜った前
記濃溶液をさらに前記蛇腹プレートにおける下方に流す
第２分配器を有してなる吸収器であり、前記低温再生器
の濃溶液出口部の設置位置は、前記吸収器の濃溶液入口
部の設置位置よりも低くなっており、前記濃溶液を前記
低温再生器の濃溶液出口部から前記吸収器の濃溶液入口
部に導く濃溶液管と、この濃溶液管における流路と前記
吸収器における前記第２分配器とを導通させるバイパス
管と、このバイパス管の流路を開閉するバイパス弁とを
有することを特徴とする。Further, the absorption refrigerator of the present invention comprises a high-temperature regenerator for heating a solution, a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution, A low-temperature regenerator that further heats the solution to a concentrated solution,
A condenser for liquefying the refrigerant vapor generated in the separator and the vapor generated in the low-temperature regenerator; an evaporator for evaporating the refrigerant liquefied in the condenser to produce refrigerant vapor; and a refrigerant generated in the evaporator. In an absorption refrigerator having an absorber for absorbing steam into a concentrated solution flowing from the low-temperature regenerator and a means for guiding a dilute solution produced in the absorber to the high-temperature regenerator, the absorber has a plate shape. , A first distributor for flowing a concentrated solution to a substantially upper end position on one plate surface of the bellows plate, and cooling formed using the other plate surface of the bellows plate A heat exchange chamber that circulates water, and is disposed at a vertically intermediate position in the bellows plate, temporarily stores the concentrated solution that has flowed down the bellows plate, and further collects the concentrated solution. Serial a absorber comprising a second distributor to flow downward in the bellows plate, the low-temperature regenerator
The installation position of the concentrated solution outlet part is the same as the concentrated solution inlet of the absorber.
Parts are lower than the installation position of the said concentrated solution
From the concentrated solution outlet of the low-temperature regenerator to the concentrated solution inlet of the absorber
A concentrated solution pipe leading to the section , a bypass pipe that connects the flow path in the concentrated solution pipe with the second distributor in the absorber, and a bypass valve that opens and closes the flow path of the bypass pipe. And
【００２４】また、本発明の吸収式冷凍機は、低温再生
器で生じた濃溶液の熱を吸収器において生じた稀溶液に
伝える低温熱交換器を有し、濃溶液管は、低温再生器で
生じた濃溶液を前記低温熱交換器に導く濃溶液降り管
と、前記低温熱交換器を通った濃溶液を前記吸収器に導
く濃溶液昇り管とからなり、バイパス管の一端は、前記
濃溶液昇り管の流路に接続していることが好ましい。Further, the absorption refrigerator of the present invention has a low-temperature heat exchanger for transferring the heat of the concentrated solution generated in the low-temperature regenerator to the dilute solution generated in the absorber, and the concentrated-solution tube is provided with a low-temperature regenerator. A concentrated solution downcomer for guiding the concentrated solution produced in the low-temperature heat exchanger to the low-temperature heat exchanger, and a concentrated solution riser for guiding the concentrated solution passed through the low-temperature heat exchanger to the absorber. It is preferably connected to the flow path of the concentrated solution riser.
【００２５】[0025]
【作用】図１に示すように低温再生器３における濃溶液
出口部１１を吸収器６における濃溶液入口部１４よりも
低い位置に設けたことにより、各構成機器の配置の自由
度を高くできる。しかし、低温再生器３における濃溶液
出口部１１を吸収器６における濃溶液入口部１４よりも
低い位置に設けた場合において、冷房運転を開始してか
ら間もない期間で、高温再生器１の温度が所定温度に達
していない状態のときは、低温再生器３と吸収器６との
間に所定の圧力差が生じていないため、濃溶液が低温再
生器３から凝縮器４へオーバーフローしてしまう。それ
によって、冷媒中に溶液が混入し、冷房運転立上り時間
が不必要に長くなってしまう。[Action] By providing the concentrated solution outlet 11 in the low temperature regenerator 3 to the position lower than the concentrated solution inlet 14 in the absorber 6 as shown in FIG. 1, the freedom of arrangement of each component device
The degree can be increased. However, the concentrated solution in the low-temperature regenerator 3
The outlet section 11 is located closer to the concentrated solution inlet section 14 in the absorber 6.
When positioned lower Te odor, in recently period from the start of the cooling operation, when the temperature of the high temperature regenerator 1 is in a state that does not reach the predetermined temperature, the low-temperature regenerator 3 and the absorber 6 Since a predetermined pressure difference is not generated in between, the concentrated solution overflows from the low-temperature regenerator 3 to the condenser 4. As a result, the solution is mixed into the refrigerant, and the cooling operation start-up time becomes unnecessarily long.
【００２６】そこで、本吸収式冷凍機では、濃溶液を低
温再生器３の濃溶液出口部１１から吸収器６の濃溶液入
口部１４に導く濃溶液管と、この濃溶液管における流路
と吸収器６における下方部位とを導通させるバイパス管
１５と、このバイパス管１５の流路を開閉するバイパス
弁１０とを有する構成としている。そして、冷房運転を
開始してから間もない期間において高温再生器１の温度
が所定温度に達していない場合は、バイパス弁を開くこ
とにより、低温再生器３内の濃溶液を、バイパス管１５
を通って吸収器６の低位置に落すことができる。これに
より、上述したオーバーフローの発生を防止でき、冷房
運転立上り時間を短縮することができる。すなわち、冷
房運転を良好に実行することができるとともに、吸収式
冷凍機を構成する各構成機器の配置の自由度を高くでき
る。 Therefore, in this absorption refrigerator, the concentrated solution is
The concentrated solution of the absorber 6 enters from the concentrated solution outlet 11 of the warm regenerator 3
Concentrated solution pipe leading to mouth 14 and flow path in this concentrated solution pipe
Pipe that connects the lower part of the absorber 6 with the lower part of the absorber 6
15 and a bypass for opening and closing the flow path of the bypass pipe 15
And a valve 10 . If the temperature of the high-temperature regenerator 1 has not reached the predetermined temperature in a period immediately after the start of the cooling operation, the concentrated solution in the low-temperature regenerator 3 is opened by opening the bypass valve.
To a lower position of the absorber 6. Thereby, the occurrence of the above-mentioned overflow can be prevented, and the cooling operation start-up time can be shortened. That is, cold
As well as being able to perform cell operation satisfactorily,
The degree of freedom in the arrangement of the components that make up the refrigerator can be increased.
You.
【００２７】また、本吸収式冷凍機は、運転を停止させ
る信号が生じた後で、前記高温再生器における所定位置
の温度が所定温度より低い（稀釈制御終了）の場合は、
バイパス弁を開く。Further, when the temperature of the predetermined position in the high-temperature regenerator is lower than the predetermined temperature (the dilution control ends) after the signal for stopping the operation is generated,
Open the bypass valve.
【００２８】これにより、運転停止時において低温再生
器３内に溜っている濃溶液を、バイパス管を介して吸収
器６の低位置に落すことができる。したがって、次回の
冷房運転開始時には、低温再生器３内に濃溶液が無い状
態から運転開始が行われるので、低温再生器３から凝縮
器４へのオーバーフローが発生を防止することができ、
運転開始の立上り時間を短縮することができる。Thus, the concentrated solution stored in the low-temperature regenerator 3 when the operation is stopped can be dropped to a low position of the absorber 6 via the bypass pipe. Therefore, at the start of the next cooling operation, the operation is started from a state where there is no concentrated solution in the low-temperature regenerator 3, so that the overflow from the low-temperature regenerator 3 to the condenser 4 can be prevented, and
The start-up time for starting operation can be shortened.
【００２９】一方、本吸収式冷凍機において、図３に示
すように、バイパス管１５の一端を吸収器６における垂
直方向の略中央部位に接続するとともに、外気温度若し
くは冷却水の温度に応じてバイパス弁１０の開閉制御を
すれば、外気温度若しくは冷却水温度の低下時にも冷凍
能力の低下を抑制でき、冷凍能力を高めることができ
る。On the other hand, in the absorption refrigerator, as shown in FIG. 3, one end of a bypass pipe 15 is connected to a substantially central portion of the absorber 6 in a vertical direction, and the bypass pipe 15 is connected to an outside air temperature or a cooling water temperature. If the opening and closing control of the bypass valve 10 is performed, a decrease in the refrigerating capacity can be suppressed even when the outside air temperature or the cooling water temperature decreases, and the refrigerating capacity can be increased.
【００３０】すなわち、外気温度若しくは冷却水の温度
が所定温度よりも低下した場合には、低温再生器３と吸
収器６間の圧力差が小さくなることにより、吸収器６へ
濃溶液を流入させることが困難となり、低温再生器３で
の液面上昇による凝縮器４への溶液混入が生じる。そこ
で、バイパス弁１０を開とすることで、濃溶液は吸収器
の中段にバイパスされ、低温再生器３での液面上昇を防
止する。That is, when the temperature of the outside air or the temperature of the cooling water is lower than the predetermined temperature, the pressure difference between the low-temperature regenerator 3 and the absorber 6 is reduced, so that the concentrated solution flows into the absorber 6. This makes it difficult to mix the solution into the condenser 4 due to the rise in the liquid level in the low-temperature regenerator 3. Therefore, by opening the bypass valve 10, the concentrated solution is bypassed to the middle stage of the absorber, and a rise in the liquid level in the low-temperature regenerator 3 is prevented.
【００３１】ここで、バイパスされた濃溶液は、吸収器
６中段に導かれ、蒸発器５にて蒸発した冷媒蒸気を吸収
して稀溶液となる。このとき、吸収器６における吸収に
使用される伝熱面積は、吸収器全体の１／２程度になる
が、吸収器６の能力は、外気温度若しくは冷却水の温度
に反比例するので、伝熱面積が１／２程度しか利用され
ていなくても、冷凍能力は十分に発揮することができ
る。Here, the bypassed concentrated solution is led to the middle stage of the absorber 6 and absorbs the refrigerant vapor evaporated in the evaporator 5 to become a dilute solution. At this time, the heat transfer area used for absorption in the absorber 6 is about の of the entire absorber, but the capacity of the absorber 6 is inversely proportional to the outside air temperature or the temperature of the cooling water. Even if only about half the area is used, the refrigeration capacity can be sufficiently exhibited.
【００３２】このように、本吸収式冷凍機において、バ
イパス管１５の一端を吸収器６における垂直方向の略中
央部位に接続したものとすれば、外気温度若しくは冷却
水の温度の低下時においても、冷凍能力の低下を招くこ
となく、吸収式冷凍機の安定した運転が可能となる。As described above, in this absorption refrigerator, if one end of the bypass pipe 15 is connected to a substantially central portion of the absorber 6 in the vertical direction, even when the outside air temperature or the cooling water temperature decreases. In addition, the stable operation of the absorption refrigerator can be achieved without lowering the refrigerating capacity.
【００３３】[0033]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００３４】図１は、本発明の実施例に係る吸収式冷凍
機を示す系統図である。本吸収式冷凍機は、溶液を加熱
する高温再生器１と、この高温再生器で加熱された溶液
を冷媒蒸気と中間濃溶液とに分離する分離器である分離
器２と、中間濃溶液をさらに加熱して濃溶液にする低温
再生器３と、分離器２で発生した冷媒蒸気及び低温再生
器３で発生した蒸気を液化する凝縮器４と、この凝縮器
４で液化した冷媒を蒸発させて冷媒蒸気とする蒸発器５
と、この蒸発器５で発生した冷媒蒸気を低温再生器３か
ら流入した濃溶液に吸収させる吸収器６と、この吸収器
６において生じた稀溶液を高温再生器１に導く手段であ
る溶液ポンプ７を有している。FIG. 1 is a system diagram showing an absorption refrigerator according to an embodiment of the present invention. This absorption refrigerator has a high-temperature regenerator 1 for heating a solution, a separator 2 that is a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution, Further, a low-temperature regenerator 3 for heating to make a concentrated solution, a condenser 4 for liquefying the refrigerant vapor generated in the separator 2 and the vapor generated in the low-temperature regenerator 3, and a refrigerant liquefied in the condenser 4 are evaporated. Evaporator 5 which makes refrigerant vapor
And an absorber 6 for absorbing the refrigerant vapor generated in the evaporator 5 into the concentrated solution flowing from the low-temperature regenerator 3, and a solution pump as a means for guiding the dilute solution generated in the absorber 6 to the high-temperature regenerator 1. 7.
【００３５】さらに、本吸収式冷凍機は、低温再生器３
で生じた濃溶液を吸収器６の上部に導く濃溶液管を構成
する濃溶液降り管１２及び濃溶液昇り管１３と、これら
濃溶液管における流路と吸収器６における下方部位との
導通させる管であって、その一端を濃溶液降り管１２の
管路途中に接続され他端を吸収器６の下方部位に接続さ
れているバイパス管１５と、このバイパス管１５の流路
を開閉する濃溶液バイパス弁１０とを有している。Further, the absorption refrigerator has a low-temperature regenerator 3
The concentrated solution descending pipe 12 and the concentrated solution rising pipe 13 constituting the concentrated solution pipe for guiding the concentrated solution generated in the above to the upper part of the absorber 6, and the flow path in the concentrated solution pipe and the lower part of the absorber 6 are conducted. A bypass pipe 15, one end of which is connected in the middle of the concentrated solution downcomer 12 and the other end of which is connected to a lower part of the absorber 6; And a solution bypass valve 10.
【００３６】さらにまた、本吸収式冷凍機では、低温再
生器３における濃溶液出口部１１の設置位置の高さが、
吸収器６における濃溶液入口部１４の設置位置の高さよ
り、高さＨだけ低くなっている。Further, in this absorption refrigerator, the height of the installation position of the concentrated solution outlet 11 in the low-temperature regenerator 3 is
The height H is lower than the height of the installation position of the concentrated solution inlet 14 in the absorber 6.
【００３７】一方、図６に示す従来の吸収式冷凍機で
は、低温再生器３における濃溶液出口部１１の設置位置
の高さが、吸収器６における濃溶液入口部１４の設置位
置の高さより、高さｈだけ高くなっている。On the other hand, in the conventional absorption refrigerator shown in FIG. 6, the height of the installation position of the concentrated solution outlet 11 in the low-temperature regenerator 3 is higher than the height of the installation position of the concentrated solution inlet 14 in the absorber 6. , The height h.
【００３８】なお、本吸収式冷凍機では、分離器２で分
離された中間濃溶液の持つ熱を有効利用するものである
高温熱交換器９と、低温再生器３で生じた濃溶液の持つ
熱を有効利用するものである低温熱交換器８とを備えて
いる。In the absorption refrigerator, the high-temperature heat exchanger 9 for effectively utilizing the heat of the intermediate concentrated solution separated in the separator 2 and the concentrated solution generated in the low-temperature regenerator 3 are used. And a low-temperature heat exchanger 8 for effectively utilizing heat.
【００３９】次に、本吸収式冷凍機の動作について説明
する。図２は、本吸収式冷凍機における特徴の一つであ
る濃溶液バイパス弁の制御手順を示すフローチャートで
ある。この濃溶液バイパス弁の制御手順は、冷房運転の
開始初期時についての手順であり、その初期時をすぎた
通常運転時は、濃溶液バイパス弁１０を閉じて、上述し
た図６に示すような従来の吸収式冷凍機と同様の動作を
行う。Next, the operation of the absorption refrigerator will be described. FIG. 2 is a flowchart showing a control procedure of the concentrated solution bypass valve which is one of the features of the absorption refrigerator. The control procedure of the concentrated solution bypass valve is a procedure for the initial stage of the start of the cooling operation. At the time of normal operation after the initial time, the concentrated solution bypass valve 10 is closed and the concentrated solution bypass valve is closed as shown in FIG. The same operation as the conventional absorption refrigerator is performed.
【００４０】本吸収式冷凍機において、冷房運転を開始
させる信号が生じた場合、すなわち冷房セレクトスイッ
チがＯＮとなったときは（Ｓ１）、高温再生器１の温度
が所定温度に達しているか否かを判断する（Ｓ２）。こ
こで、高温再生器１の温度は、例えば、高温再生器１に
おける所定位置の温度を検出して判断してもよく、ある
いは、高温再生器１内における所定位置の溶液の温度を
検出して判断してもよい。In the absorption refrigerator, when a signal for starting the cooling operation is generated, that is, when the cooling select switch is turned on (S1), it is determined whether or not the temperature of the high-temperature regenerator 1 has reached a predetermined temperature. Is determined (S2). Here, the temperature of the high-temperature regenerator 1 may be determined by, for example, detecting the temperature of a predetermined position in the high-temperature regenerator 1 or detecting the temperature of the solution at a predetermined position in the high-temperature regenerator 1. You may decide.
【００４１】そして、高温再生器１の温度が、予め設定
した所定の温度以下である場合は、濃溶液バイパス弁１
０を開く（Ｓ３）。ここで、予め設定した所定の温度と
は、冷房運転立上り時において、低温再生器と吸収器と
の間に一定値以上の圧力差生じる温度、例えば摂氏１２
０度から１６０度範囲の所定の温度とする。If the temperature of the high-temperature regenerator 1 is lower than a predetermined temperature, the concentrated solution bypass valve 1
0 is opened (S3). Here, the predetermined temperature is a temperature at which a pressure difference of a certain value or more occurs between the low-temperature regenerator and the absorber at the start of the cooling operation, for example, 12 degrees Celsius.
The temperature is set to a predetermined temperature in the range of 0 to 160 degrees.
【００４２】一方、ステップ３において、高温再生器１
の温度が所定の温度よりも高い場合は、濃溶液バイパス
弁を閉じる（Ｓ３）。On the other hand, in step 3, the high-temperature regenerator 1
If the temperature is higher than the predetermined temperature, the concentrated solution bypass valve is closed (S3).
【００４３】このように、本吸収式冷凍機では、冷房運
転を開始してから間もない期間において高温再生器１の
温度が所定温度に達していない場合は、低温再生器３内
の圧力がまだ通常運転時の状態の圧力まで上昇しておら
ず、低温再生器３と吸収器６との間に一定値以上の圧力
差生じていないと判断する。As described above, in the absorption refrigerator, when the temperature of the high-temperature regenerator 1 has not reached the predetermined temperature in a short period after the cooling operation is started, the pressure in the low-temperature regenerator 3 is increased. It is determined that the pressure has not yet risen to the state at the time of normal operation, and that a pressure difference between the low-temperature regenerator 3 and the absorber 6 has not exceeded a certain value.
【００４４】この状態において、もし、濃溶液バイパス
弁１０を閉じた状態、すなわち従来の吸収式冷凍機の構
成と同様な状態とすれば、濃溶液が低温再生器３から凝
縮器４へオーバーフローしてしまう。それによって、冷
媒中に溶液が混入し、冷房運転立上り時間が不必要に長
くなってしまう。In this state, if the concentrated solution bypass valve 10 is closed, that is, the state is the same as that of the conventional absorption refrigerator, the concentrated solution overflows from the low-temperature regenerator 3 to the condenser 4. Would. As a result, the solution is mixed into the refrigerant, and the cooling operation start-up time becomes unnecessarily long.
【００４５】しかし、本吸収式冷凍機では、冷房運転を
開始してから間もない期間において高温再生器１の温度
が所定温度に達していない場合は、濃溶液バイパス弁１
０を開く（Ｓ３）ので、低温再生器３内の濃溶液は、濃
溶液降り管１２の一部とバイパス管１５を通って吸収器
６の低位置に送られる。これにより、上述したオーバー
フローの発生を防止でき、冷房運転立上り時間を短縮す
ることができる。However, in this absorption refrigerator, when the temperature of the high-temperature regenerator 1 has not reached the predetermined temperature within a short period of time after the start of the cooling operation, the concentrated solution bypass valve 1
Since 0 is opened (S3), the concentrated solution in the low-temperature regenerator 3 is sent to a low position of the absorber 6 through a part of the concentrated solution descending pipe 12 and the bypass pipe 15. Thereby, the occurrence of the above-mentioned overflow can be prevented, and the cooling operation start-up time can be shortened.
【００４６】一方、図１に示すように、低温再生器３に
おける濃溶液出口部１１の設置位置の高さが、吸収器６
における濃溶液入口部１４の設置位置の高さよりも、高
さＨだけ低くなっていることにより、運転停止時におい
て溶液が低温再生器３に溜ったままの状態になることが
考えられる。On the other hand, as shown in FIG. 1, the height of the installation position of the concentrated solution outlet 11 in the low-temperature regenerator 3 is
It is conceivable that the solution may remain in the low-temperature regenerator 3 when the operation is stopped because the height H is lower than the height of the installation position of the concentrated solution inlet 14 in FIG.
【００４７】その状態から運転を開始するとすれば、低
温再生器３から凝縮器４へのオーバーフローが発生しや
すくなり、運転開始の立上り時間が長期化してしまう。If the operation is started from that state, overflow from the low-temperature regenerator 3 to the condenser 4 is likely to occur, and the rise time of the operation start is prolonged.
【００４８】そこで、本吸収式冷凍機では、運転停止時
においても以下に示す制御をして、上記の問題を解決し
ている。図２に示すフローチャートにおいて運転停止モ
ードとなった場合（Ｓ５）すなわち、吸収式冷凍機の運
転を停止させる信号が生じた場合は、冷房稀釈制御が終
了したか否か、すなわち、高温再生器の温度が所定温度
以下であるか否かを判断する（Ｓ６）。Therefore, in the absorption refrigerator, the above-mentioned problem is solved by performing the following control even when the operation is stopped. In the operation stop mode in the flowchart shown in FIG. 2 (S5), that is, when a signal for stopping the operation of the absorption refrigerator is generated, it is determined whether or not the cooling dilution control has been completed, that is, whether the high-temperature regenerator has been operated. It is determined whether the temperature is equal to or lower than a predetermined temperature (S6).
【００４９】この判断は、例えば、高温再生器における
所定位置の温度を検出することで実効することができ
る。This determination can be made, for example, by detecting the temperature at a predetermined position in the high-temperature regenerator.
【００５０】そして、高温再生器における所定位置の温
度が所定温度以下の場合は、冷房稀釈制御が終了したと
判断して濃溶液バイパス弁１０を開く（Ｓ７）。一方、
高温再生器における所定位置の温度が前記所定温度より
も高い場合は、冷房稀釈制御が終了していないと判断し
て濃溶液バイパス弁１０を閉じる（Ｓ８）。If the temperature at the predetermined position in the high-temperature regenerator is equal to or lower than the predetermined temperature, it is determined that the cooling dilution control has been completed, and the concentrated solution bypass valve 10 is opened (S7). on the other hand,
If the temperature at the predetermined position in the high temperature regenerator is higher than the predetermined temperature, it is determined that the cooling dilution control has not been completed, and the concentrated solution bypass valve 10 is closed (S8).
【００５１】これらにより、本吸収式冷凍機では、運転
停止時において低温再生器３内に溜っている濃溶液を、
濃溶液降り管１２の一部とバイパス管１５を介して吸収
器６の低位置に落すことができる。これで、次回の冷房
運転開始時には、低温再生器３内に濃溶液が無い状態か
ら運転開始が行われるので、低温再生器３から凝縮器４
へのオーバーフローが発生を防止することができ、運転
開始の立上り時間を短縮することができる。Thus, in this absorption refrigerator, the concentrated solution stored in the low-temperature regenerator 3 when the operation is stopped is
The liquid can be dropped to a low position of the absorber 6 through a part of the concentrated solution down pipe 12 and the bypass pipe 15. Thus, at the time of starting the next cooling operation, the operation is started from a state where there is no concentrated solution in the low-temperature regenerator 3.
Can be prevented from occurring, and the rise time at the start of operation can be shortened.
【００５２】次に、本発明の第２実施例に係る吸収式冷
凍機について説明する。図３は、本発明の第２実施例に
係る吸収式冷凍機の主要部を示す説明図である。Next, an absorption type refrigerator according to a second embodiment of the present invention will be described. FIG. 3 is an explanatory diagram showing a main part of an absorption refrigerator according to a second embodiment of the present invention.
【００５３】本吸収式冷凍機と図１に示す吸収式冷凍機
との相違点は、図３に示すように、バイパス管１５の一
端が吸収器６における垂直方向の略中央部位に接続され
ている点である。The difference between the absorption refrigerator and the absorption refrigerator shown in FIG. 1 is that, as shown in FIG. 3, one end of the bypass pipe 15 is connected to a substantially central portion of the absorber 6 in the vertical direction. It is a point.
【００５４】ここで、本吸収式冷凍機では、吸収器６
が、板形状の部材を略垂直に配置した蛇腹プレート２３
と、この蛇腹プレートの一方の板面における略上端位置
へ濃溶液を流す第１分配器２１と、蛇腹プレート２３の
他方の板面を用いて形成される冷却水を循環させる熱交
換室と、蛇腹プレート２３における垂直方向の中間位置
に配置されていて、蛇腹プレート２３を流れ落ちてきた
濃溶液を一旦溜めて、その溜った濃溶液をさらに蛇腹プ
レート２３における下方に流す第２分配器２２を有して
構成している。Here, in this absorption refrigerator, the absorber 6
A bellows plate 23 in which plate-shaped members are arranged substantially vertically
A first distributor 21 for flowing a concentrated solution to a substantially upper end position on one plate surface of the bellows plate; a heat exchange chamber for circulating cooling water formed by using the other plate surface of the bellows plate 23; A second distributor 22 is disposed at an intermediate position in the vertical direction of the bellows plate 23, temporarily stores the concentrated solution flowing down the bellows plate 23, and further flows the concentrated solution downward in the bellows plate 23. It is composed.
【００５５】そして、バイパス管１５の一端は、第２分
配器２２に接続してある。[0055] One end of the bypass pipe 15 is connected to the second distributor 22.
【００５６】これにより、バイパスされてきた濃溶液
は、一旦第２分配器２２に溜り、その後、伝熱面である
蛇腹プレート２３の中段から下方に分散して流れ落ち
る。As a result, the concentrated solution that has been bypassed temporarily accumulates in the second distributor 22, and then is dispersed downward from the middle stage of the bellows plate 23, which is the heat transfer surface, and flows down.
【００５７】さらに、本吸収式冷凍機では、外気温度を
検出する外気温度検出手段（図示せず）と、その外気温
度が所定温度以下の場合はバイパス弁１０を開き、外気
温度が所定温度よりも高い場合は濃溶液バイパス弁１０
を閉じる制御手段（図示せず）とを設けている。Further, in the absorption refrigerator, the outside air temperature detecting means (not shown) for detecting the outside air temperature and the bypass valve 10 are opened when the outside air temperature is lower than a predetermined temperature, so that the outside air temperature becomes lower than the predetermined temperature. Is too high, the concentrated solution bypass valve 10
And a control means (not shown) for closing the switch.
【００５８】図４は、濃溶液バイパス弁１０を制御する
制御手段の動作を示すフローチャートである。制御手段
は、まず、冷房運転状態において、外気温度検出手段か
ら外気温度についての検出信号を入力する（Ｓ２１）。
そして、その入力した外気温度が所定温度以下の場合は
濃溶液バイパス弁１０を開き（Ｓ２２、Ｓ２４）、その
入力した外気温度が所定温度よりも高い場合は濃溶液バ
イパス弁１０を閉じる（Ｓ２２、Ｓ２３）。FIG. 4 is a flowchart showing the operation of the control means for controlling the concentrated solution bypass valve 10. First, in the cooling operation state, the control unit inputs a detection signal regarding the outside air temperature from the outside air temperature detection unit (S21).
If the input outside air temperature is lower than the predetermined temperature, the concentrated solution bypass valve 10 is opened (S22, S24), and if the input outside air temperature is higher than the predetermined temperature, the concentrated solution bypass valve 10 is closed (S22, S22). S23).
【００５９】ここで、前記外気温度検出手段の替わり
に、冷却水の温度を検出する冷却水温度検出手段（図示
せず）を設け、制御手段は、冷却水の温度が所定温度以
下の場合はバイパス弁１０を開き、冷却水の温度が所定
温度よりも高い場合はバイパス弁１０を閉じるものとし
ても良い。Here, instead of the outside air temperature detecting means, a cooling water temperature detecting means (not shown) for detecting the temperature of the cooling water is provided. The bypass valve 10 may be opened, and the bypass valve 10 may be closed when the temperature of the cooling water is higher than a predetermined temperature.
【００６０】次に、本吸収式冷凍機の動作についてさら
に詳細に説明する。本吸収式冷凍機において、外気温度
若しくは冷却水の温度が所定温度よりも低下した場合に
は、低温再生器３と吸収器６間の圧力差が小さくなるこ
とにより、吸収器６へ濃溶液を流入させることが困難と
なり、低温再生器３での液面上昇による凝縮器４への溶
液混入が生じる。そこで、バイパス弁１０を開とするこ
とで、濃溶液は吸収器６の中段にバイパスされ、低温再
生器３での液面上昇を防止する。Next, the operation of the absorption refrigerator will be described in more detail. In the present absorption refrigerator, when the outside air temperature or the temperature of the cooling water falls below a predetermined temperature, the pressure difference between the low-temperature regenerator 3 and the absorber 6 becomes smaller, so that the concentrated solution is supplied to the absorber 6. It becomes difficult to flow the solution, and the solution is mixed into the condenser 4 due to a rise in the liquid level in the low-temperature regenerator 3. Thus, by opening the bypass valve 10, the concentrated solution is bypassed to the middle stage of the absorber 6 to prevent the liquid level from rising in the low-temperature regenerator 3.
【００６１】そして、バイパスされた濃溶液は、吸収器
６における中段に設けた第２分配器２２によって、伝熱
面である蛇腹プレート２３の表面に分配され、蒸発器５
にて蒸発した冷媒蒸気を吸収して稀溶液となる。このと
き、吸収器６における吸収に使用される伝熱面積は、吸
収器全体の１／２程度になるが、吸収器６の能力は、外
気温度若しくは冷却水の温度に反比例するので、伝熱面
積が１／２程度しか利用されていなくても、冷凍能力は
十分に発揮することができる。Then, the bypassed concentrated solution is distributed to the surface of the bellows plate 23 which is a heat transfer surface by the second distributor 22 provided in the middle stage of the absorber 6, and the evaporator 5
Absorbs the refrigerant vapor evaporated in and forms a dilute solution. At this time, the heat transfer area used for absorption in the absorber 6 is about の of the entire absorber, but the capacity of the absorber 6 is inversely proportional to the outside air temperature or the temperature of the cooling water. Even if only about half the area is used, the refrigeration capacity can be sufficiently exhibited.
【００６２】例えば、本吸収式冷凍機によれば、外気温
度が所定温度よりも高い条件あるいは冷却水の温度が所
定温度よりも高い条件における冷凍能力と、外気温度が
所定温度よりも低い条件あるいは冷却水の温度が所定温
度よりも低い条件における冷凍能力とを、ほぼ同等の能
力にすることができる。For example, according to the absorption refrigerator, the refrigerating capacity under the condition that the outside air temperature is higher than the predetermined temperature or the condition that the temperature of the cooling water is higher than the predetermined temperature, and the condition that the outside air temperature is lower than the predetermined temperature or The refrigerating capacity under the condition that the temperature of the cooling water is lower than the predetermined temperature can be made substantially equal.
【００６３】このように、本吸収式冷凍機において、バ
イパス管１５の一端を吸収器６における垂直方向の略中
央部位に接続したものとすれば、外気温度若しくは冷却
水の温度の低下時においても、冷凍能力の低下を招くこ
となく、吸収式冷凍機の安定した運転が可能となる。As described above, in this absorption refrigerator, if one end of the bypass pipe 15 is connected to a substantially central portion of the absorber 6 in the vertical direction, even when the outside air temperature or the cooling water temperature decreases. In addition, the stable operation of the absorption refrigerator can be achieved without lowering the refrigerating capacity.
【００６４】図５は、本発明の第３実施例に係る吸収式
冷凍機を示す系統図である。本吸収式冷凍機の特徴は、
バイパス管１５の一端が、濃溶液昇り管１３の流路に接
続している点である。図１に示す吸収式冷凍機では、バ
イパス管１５の一端が、濃溶液降り管１２の流路に接続
している。FIG. 5 is a system diagram showing an absorption refrigerator according to a third embodiment of the present invention. The features of this absorption refrigerator are
The point that one end of the bypass pipe 15 is connected to the flow path of the concentrated solution riser pipe 13. In the absorption refrigerator shown in FIG. 1, one end of the bypass pipe 15 is connected to the flow path of the concentrated solution descending pipe 12.
【００６５】このような構成にすることにより、本吸収
式冷凍機は、バイパス管１５を設けることについての設
計の自由度を高めることができる。By adopting such a configuration, the present absorption refrigerator can increase the degree of freedom in designing the provision of the bypass pipe 15.
【００６６】[0066]
【発明の効果】以上説明したように本発明によれば、こ
の濃溶液管における流路と吸収器における下方部位との
導通させるバイパス管と、このバイパス管の流路を開閉
するバイパス弁とを有するので、吸収式冷凍機を構成す
る各構成機器の配置の自由度が高い吸収式冷凍機を提供
することができるとともに、低温再生器から凝縮器への
濃溶液のオーバーフローの発生を防止でき、冷房運転立
上り時間を短縮することができる。As described above, according to the present invention, the bypass pipe for conducting the flow path of the concentrated solution pipe to the lower part of the absorber and the bypass valve for opening and closing the flow path of the bypass pipe are provided. Therefore, it is possible to provide an absorption refrigerator having a high degree of freedom of arrangement of each component device constituting the absorption refrigerator, and to prevent the overflow of the concentrated solution from the low-temperature regenerator to the condenser, The cooling operation start-up time can be shortened.
【００６７】また、本発明によれば、バイパス管の一端
を吸収器における垂直方向の略中央部位に接続すること
により、外気温度若しくは冷却水温度の低下時にも冷凍
能力が低下せず、各構成機器の配置の自由度が高いとと
もに冷凍能力も高い吸収式冷凍機を提供することができ
る。Further, according to the present invention, since one end of the bypass pipe is connected to a substantially central portion in the vertical direction in the absorber, the refrigerating capacity does not decrease even when the outside air temperature or the cooling water temperature decreases. It is possible to provide an absorption refrigerator having a high degree of freedom in arrangement of devices and a high refrigeration capacity.
【図１】本発明の第１実施例に係る吸収式冷凍機を示す
系統図である。FIG. 1 is a system diagram showing an absorption refrigerator according to a first embodiment of the present invention.
【図２】図１に示す吸収式冷凍機における濃溶液バイパ
ス弁の制御手順を示すフローチャートである。FIG. 2 is a flowchart showing a control procedure of a concentrated solution bypass valve in the absorption refrigerator shown in FIG.
【図３】本発明の第２実施例に係る吸収式冷凍機の主要
部を示す説明図である。FIG. 3 is an explanatory view showing a main part of an absorption refrigerator according to a second embodiment of the present invention.
【図４】図３に示す吸収式冷凍機における濃溶液バイパ
ス弁の制御手順を示すフローチャートである。FIG. 4 is a flowchart showing a control procedure of a concentrated solution bypass valve in the absorption refrigerator shown in FIG.
【図５】本発明の第３実施例に係る吸収式冷凍機を示す
系統図である。FIG. 5 is a system diagram showing an absorption refrigerator according to a third embodiment of the present invention.
【図６】従来の吸収式冷凍機の一例を示す系統図であ
る。FIG. 6 is a system diagram showing an example of a conventional absorption refrigerator.
１ 高温再生器 ２ 分離器 ３ 低温再生器 ４ 凝縮器 ５ 蒸発器 ６ 吸収器 ７ 溶液ポンプ ８ 低温熱交換器 ９ 高温熱交換器 １０ 濃溶液バイパス弁 １１ 濃溶液出口部 １２ 濃溶液降り管 １３ 濃溶液昇り管 １４ 濃溶液入口部 １５ バイパス管 ２１ 第１分配器 ２２ 第２分配器 ２３ 蛇腹プレート DESCRIPTION OF SYMBOLS 1 High temperature regenerator 2 Separator 3 Low temperature regenerator 4 Condenser 5 Evaporator 6 Absorber 7 Solution pump 8 Low temperature heat exchanger 9 High temperature heat exchanger 10 Concentrated solution bypass valve 11 Concentrated solution outlet part 12 Concentrated solution downcomer 13 Solution riser 14 Concentrated solution inlet 15 Bypass tube 21 First distributor 22 Second distributor 23 Bellows plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 頓宮 伸二 静岡県浜松市子安町1370 矢崎総業株式 会社内 (56)参考文献 特開 平５−288423（ＪＰ，Ａ) 実開 昭53−37946（ＪＰ，Ｕ) 実開 昭63−168771（ＪＰ，Ｕ) 実開 昭55−133175（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 15/00 306 F25B 15/00 303 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shinji Tonmiya 1370 Koyasu-cho, Hamamatsu-shi, Shizuoka Pref. Yazaki Sogyo Co., Ltd. (56) References JP-A-5-288423 (JP, A) , U) Fully open 63-168771 (JP, U) Fully open 55-133175 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F25B 15/00 306 F25B 15/00 303
Claims (10)
再生器で加熱された溶液を冷媒蒸気と中間濃溶液とに分
離する分離器と、前記中間濃溶液をさらに加熱して濃溶
液にする低温再生器と、前記分離器で発生した冷媒蒸気
及び前記低温再生器で発生した蒸気を液化する凝縮器
と、この凝縮器で液化した冷媒を蒸発させて冷媒蒸気と
する蒸発器と、この蒸発器で発生した冷媒蒸気を前記低
温再生器から流入した濃溶液に吸収させる吸収器と、こ
の吸収器において生じた稀溶液を前記高温再生器に導く
手段とを有する吸収式冷凍機において、前記低温再生器
の濃溶液出口部の設置位置は、前記吸収器の濃溶液入口
部の設置位置よりも低くなっており、前記濃溶液を前記
低温再生器の濃溶液出口部から前記吸収器の濃溶液入口
部に導く濃溶液管と、この濃溶液管における流路と前記
吸収器における下方部位とを導通させるバイパス管と、
このバイパス管の流路を開閉するバイパス弁とを有する
ことを特徴とする吸収式冷凍機。1. A high-temperature regenerator for heating a solution, a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution, and further heating the intermediate concentrated solution to a concentrated solution. A low-temperature regenerator, a condenser for liquefying the refrigerant vapor generated in the separator and the vapor generated in the low-temperature regenerator, an evaporator for evaporating the refrigerant liquefied in the condenser to a refrigerant vapor, and absorber for absorbing a refrigerant vapor generated in the evaporator to the concentrated solution flowing from the low-temperature regenerator in an absorption refrigerating machine and a means for guiding the diluted solution generated in the absorber to the high temperature generator, the Low temperature regenerator
The installation position of the concentrated solution outlet part is the same as the concentrated solution inlet of the absorber.
Parts are lower than the installation position of the said concentrated solution
From the concentrated solution outlet of the low-temperature regenerator to the concentrated solution inlet of the absorber
A concentrated solution pipe leading to the section , a bypass pipe for conducting a flow path in the concentrated solution pipe and a lower portion in the absorber,
An absorption refrigerator having a bypass valve for opening and closing the flow path of the bypass pipe.
冷房運転を開始させる信号が生じた後で、高温再生器に
おける所定位置の温度が所定温度以下の場合は、バイパ
ス弁を開き、前記高温再生器における所定位置の温度が
前記所定温度よりも高い場合は、バイパス弁を閉じる制
御手段を有することを特徴とする吸収式冷凍機。2. The absorption refrigerator according to claim 1, wherein
After the signal for starting the cooling operation is generated, when the temperature at the predetermined position in the high-temperature regenerator is equal to or lower than the predetermined temperature, the bypass valve is opened, and when the temperature at the predetermined position in the high-temperature regenerator is higher than the predetermined temperature. Comprises a control unit for closing a bypass valve.
冷房運転を開始させる信号が生じた後で、高温再生器内
における所定位置の溶液の温度が所定温度以下の場合
は、バイパス弁を開き、前記所定位置の溶液の温度が前
記所定温度よりも高い場合は、バイパス弁を閉じる制御
手段を有することを特徴とする吸収式冷凍機。3. The absorption refrigerator according to claim 1, wherein
After the signal for starting the cooling operation is generated, if the temperature of the solution at a predetermined position in the high-temperature regenerator is equal to or lower than a predetermined temperature, a bypass valve is opened, and the temperature of the solution at the predetermined position is higher than the predetermined temperature. An absorption refrigerator having a control means for closing a bypass valve.
において、運転を停止させる信号が生じた後で、高温再
生器における所定位置の温度が所定温度以下の場合は、
バイパス弁を開き、前記高温再生器における所定位置の
温度が前記所定温度よりも高い場合は、バイパス弁を閉
じる制御手段を有することを特徴とする吸収式冷凍機。4. The absorption refrigerator according to claim 1, wherein after a signal for stopping the operation is generated, when a temperature at a predetermined position in the high-temperature regenerator is lower than a predetermined temperature,
An absorption refrigerator comprising a control means for opening a bypass valve and closing the bypass valve when the temperature at a predetermined position in the high-temperature regenerator is higher than the predetermined temperature.
において、運転を停止させる信号が生じた後で、高温再
生器内における所定位置の溶液の温度が所定温度以下の
場合は、バイパス弁を開き、前記所定位置の溶液の温度
が前記所定温度よりも高い場合は、バイパス弁を閉じる
制御手段を有することを特徴とする吸収式冷凍機。5. The absorption refrigerator according to claim 1, wherein after the signal for stopping the operation is generated, when the temperature of the solution at a predetermined position in the high-temperature regenerator is lower than a predetermined temperature, An absorption refrigerator having a control means for opening a bypass valve and closing the bypass valve when the temperature of the solution at the predetermined position is higher than the predetermined temperature.
再生器で加熱された溶液を冷媒蒸気と中間濃溶液とに分
離する分離器と、前記中間濃溶液をさらに加熱して濃溶
液にする低温再生器と、前記分離器で発生した冷媒蒸気
及び前記低温再生器で発生した蒸気を液化する凝縮器
と、この凝縮器で液化した冷媒を蒸発させて冷媒蒸気と
する蒸発器と、この蒸発器で発生した冷媒蒸気を前記低
温再生器から流入した濃溶液に吸収させる吸収器と、こ
の吸収器において生じた稀溶液を前記高温再生器に導く
手段とを有する吸収式冷凍機において、前記低温再生器
の濃溶液出口部の設置位置は、前記吸収器の濃溶液入口
部の設置位置よりも低くなっており、前記濃溶液を前記
低温再生器の濃溶液出口部から前記吸収器の濃溶液入口
部に導く濃溶液管と、この濃溶液管における流路と前記
吸収器における垂直方向の略中央部位とを導通させるバ
イパス管と、このバイパス管の流路を開閉するバイパス
弁とを有することを特徴とする吸収式冷凍機。6. A high-temperature regenerator for heating a solution, a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution, and further heating the intermediate concentrated solution to a concentrated solution. A low-temperature regenerator, a condenser for liquefying the refrigerant vapor generated in the separator and the vapor generated in the low-temperature regenerator, an evaporator for evaporating the refrigerant liquefied in the condenser to a refrigerant vapor, and absorber for absorbing a refrigerant vapor generated in the evaporator to the concentrated solution flowing from the low-temperature regenerator in an absorption refrigerating machine and a means for guiding the diluted solution generated in the absorber to the high temperature generator, the Low temperature regenerator
The installation position of the concentrated solution outlet part is the same as the concentrated solution inlet of the absorber.
Parts are lower than the installation position of the said concentrated solution
From the concentrated solution outlet of the low-temperature regenerator to the concentrated solution inlet of the absorber
A concentrated solution pipe leading to the section , a bypass pipe for conducting a flow path in the concentrated solution pipe and a substantially central portion of the absorber in a vertical direction, and a bypass valve for opening and closing the flow path of the bypass pipe. Characteristic absorption refrigerator.
外気温度を検出する外気温度検出手段を設け、前記外気
温度が所定温度以下の場合はバイパス弁を開き、前記外
気温度が所定温度よりも高い場合はバイパス弁を閉じる
制御手段を有することを特徴とする吸収式冷凍機。7. The absorption refrigerator according to claim 6, wherein
An outside air temperature detecting unit that detects an outside air temperature is provided, and a control unit that opens a bypass valve when the outside air temperature is equal to or lower than a predetermined temperature and closes the bypass valve when the outside air temperature is higher than a predetermined temperature. Absorption refrigerator.
冷却水の温度を検出する冷却水温度検出手段を設け、前
記冷却水の温度が所定温度以下の場合はバイパス弁を開
き、前記冷却水の温度が所定温度よりも高い場合はバイ
パス弁を閉じる制御手段を有することを特徴とする吸収
式冷凍機。8. The absorption refrigerator according to claim 6, wherein
A cooling water temperature detecting means for detecting a temperature of the cooling water; a control unit that opens a bypass valve when the temperature of the cooling water is equal to or lower than a predetermined temperature, and closes a bypass valve when the temperature of the cooling water is higher than the predetermined temperature. An absorption refrigerator having means.
再生器で加熱された溶液を冷媒蒸気と中間濃溶液とに分
離する分離器と、前記中間濃溶液をさらに加熱して濃溶
液にする低温再生器と、前記分離器で発生した冷媒蒸気
及び前記低温再生器で発生した蒸気を液化する凝縮器
と、この凝縮器で液化した冷媒を蒸発させて冷媒蒸気と
する蒸発器と、この蒸発器で発生した冷媒蒸気を前記低
温再生器から流入した濃溶液に吸収させる吸収器と、こ
の吸収器において生じた稀溶液を前記高温再生器に導く
手段とを有する吸収式冷凍機において、前記吸収器は、
板形状の部材を略垂直に配置した蛇腹プレートと、この
蛇腹プレートの一方の板面における略上端位置へ濃溶液
を流す第１分配器と、前記蛇腹プレートの他方の板面を
用いて形成される冷却水を循環させる熱交換室と、前記
蛇腹プレートにおける垂直方向の中間位置に配置されて
いて、前記蛇腹プレートを流れ落ちてきた前記濃溶液を
一旦溜めて、その溜った前記濃溶液をさらに前記蛇腹プ
レートにおける下方に流す第２分配器を有してなる吸収
器であり、前記低温再生器の濃溶液出口部の設置位置
は、前記吸収器の濃溶液入口部の設置位置よりも低くな
っており、前記濃溶液を前記低温再生器の濃溶液出口部
から前記吸収器の濃溶液入口部に導く濃溶液管と、この
濃溶液管における流路と前記吸収器における前記第２分
配器とを導通させるバイパス管と、このバイパス管の流
路を開閉するバイパス弁とを有することを特徴とする吸
収式冷凍機。9. A high-temperature regenerator for heating a solution, a separator for separating the solution heated by the high-temperature regenerator into a refrigerant vapor and an intermediate concentrated solution, and further heating the intermediate concentrated solution to a concentrated solution. A low-temperature regenerator, a condenser for liquefying the refrigerant vapor generated in the separator and the vapor generated in the low-temperature regenerator, an evaporator for evaporating the refrigerant liquefied in the condenser to a refrigerant vapor, An absorption refrigerator having an absorber that absorbs refrigerant vapor generated in an evaporator into a concentrated solution flowing from the low-temperature regenerator, and a unit that guides a dilute solution generated in the absorber to the high-temperature regenerator. The absorber is
A bellows plate in which plate-shaped members are arranged substantially vertically, a first distributor for flowing a concentrated solution to a substantially upper end position on one plate surface of the bellows plate, and the other plate surface of the bellows plate are formed. A heat exchange chamber for circulating cooling water, which is disposed at a vertically intermediate position in the bellows plate, temporarily stores the concentrated solution flowing down the bellows plate, and further stores the concentrated solution. An absorber having a second distributor flowing downward in a bellows plate, and an installation position of a concentrated solution outlet of the low-temperature regenerator
Is lower than the installation position of the concentrated solution inlet of the absorber.
And the concentrated solution is supplied to the concentrated solution outlet of the low-temperature regenerator.
, A concentrated solution pipe leading to the concentrated solution inlet of the absorber, a bypass pipe for connecting a flow path in the concentrated solution pipe with the second distributor in the absorber, and opening and closing a flow path of the bypass pipe. An absorption refrigerator having a bypass valve.
８又は９記載の吸収式冷凍機において、低温再生器で生
じた濃溶液の熱を吸収器において生じた稀溶液に伝える
低温熱交換器を有し、濃溶液管は、低温再生器で生じた
濃溶液を前記低温熱交換器に導く濃溶液降り管と、前記
低温熱交換器を通った濃溶液を前記吸収器に導く濃溶液
昇り管とからなり、バイパス管の一端は、前記濃溶液昇
り管の流路に接続していることを特徴とする吸収式冷凍
機。10. The method of claim 1, 2, 3, 4, 5, 6, 7,
10. The absorption refrigerator according to 8 or 9, further comprising a low-temperature heat exchanger that transfers heat of the concentrated solution generated in the low-temperature regenerator to the dilute solution generated in the absorber, and the concentrated solution tube is generated in the low-temperature regenerator. A concentrated solution downcomer for guiding the concentrated solution to the low-temperature heat exchanger; and a concentrated solution riser for guiding the concentrated solution passing through the low-temperature heat exchanger to the absorber. An absorption refrigerator connected to a flow path of a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26524895A JP3180112B2 (en) | 1995-04-04 | 1995-10-13 | Absorption refrigerator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-78650 | 1995-04-04 | ||
| JP7865095 | 1995-04-04 | ||
| JP26524895A JP3180112B2 (en) | 1995-04-04 | 1995-10-13 | Absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08334276A JPH08334276A (en) | 1996-12-17 |
| JP3180112B2 true JP3180112B2 (en) | 2001-06-25 |
Family
ID=26419704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26524895A Expired - Fee Related JP3180112B2 (en) | 1995-04-04 | 1995-10-13 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3180112B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3467154B2 (en) * | 1996-10-14 | 2003-11-17 | パロマ工業株式会社 | Absorption air conditioner |
-
1995
- 1995-10-13 JP JP26524895A patent/JP3180112B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08334276A (en) | 1996-12-17 |
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